RU2818739C2 - Nozzle with low emissions, combustion chamber for two-component fuel with low emissions and gas turbine generator unit - Google Patents

Abstract

FIELD: thermal energy and power engineering.

SUBSTANCE: disclosed are a nozzle with low emissions, a combustion chamber for a two-component fuel with low emissions and a gas turbine generator set, which are related to a generator set. According to the present invention, by means of an integrated design of a low-emission nozzle for a two-component fuel combination of diffuse combustion of combustible liquid and combustion of preliminarily prepared mixture containing gaseous fuel is provided; when using gaseous fuel in a gas turbine through small holes in a swirler of a nozzle with low emissions, gaseous fuel and air are emitted with ensuring good mixing, at that, by burning the preliminarily prepared mixture of fuel and air, the amount of emission of pollutants is reduced; when using a combustible liquid in a gas turbine by means of a nozzle with low emissions, equipped with function of auxiliary air spraying in center of nozzle with low emissions, solves the problem of the poor spray effect of the combustible liquid at low operating conditions of the gas turbine; in addition, disclosed is a two-component fuel supply control system with low emissions, by means of which gaseous fuel or combustible liquid is supplied to the gas turbine and the fuel is controlled, and also provides the possibility of realizing efficient stable switching of gaseous/liquid fuel in conditions of continuous operation. Present invention is used to generate electricity.

EFFECT: present invention is aimed at solving the problem of excessive formation of high-temperature soot, which is known from the prior art.

19 cl, 6 dwg

Description

Technical field

The present invention relates to a low emission nozzle, a combustion chamber for a low emission bicomponent fuel, and a fuel control system for a gas turbine generator unit. The invention relates to the field of thermal energy and energy.

State of the art

With the continuous progress of China's "Ocean Strategy", the dynamics of oceanic crude oil exploration and production are continuously increasing, and the production volume of oceanic crude oil is increasing rapidly. The crude oil production process often produces large quantities of associated petroleum gas; The peculiarity of this associated gas is that it is difficult to store and transport because it is flammable and explosive, and for safety reasons, it is immediately flared from the moment production begins, which creates a serious waste of energy sources, and is urgently needed under China's "Ocean Strategy" find a solution to this problem. The dual fuel gas turbine is a power equipment that can effectively solve this problem, and not only can provide the driving force for crude oil development, but also can use associated petroleum gas as fuel gas, and realize stable operational switching between main liquid fuel and associated petroleum gas, thereby increasing the fuel flexibility of the gas turbine, effectively using associated petroleum gas and meeting the need for several types of fuel in different modes during the crude oil development process.

The dual fuel combustor and the dual fuel control system are the most important core components of a dual fuel gas turbine, and as the requirements for high power, low emissions and dual fuel gas turbines continue to increase under the Ocean Strategy, more and more are required. high requirements for the design of combustion chambers. In addition, 95% of the time from the service life to the overhaul of a gas turbine using two-component fuel is spent on the use of gaseous fuel in the form of associated gas, and only in case of damage or regulation of the supply of gaseous fuel it is necessary to use a flammable liquid, therefore it is extremely important to fulfill the functional requirement of ensuring low emissions when using gaseous fuel.

In order to meet the requirements for low emissions when using associated gas in a gas turbine using two-component fuel, relatively many solutions are currently used, which consist of technologies for spraying water through nozzles, so that by spraying water inside the combustion chamber, the temperature of the combustion area is reduced, which would ensure achieving the goal of reducing emissions of pollutants such as nitrogen oxide, etc., but this also leads to increased complexity of equipment and subsystems, which seriously affects the characteristic advantages of gas turbines such as small volume and comparatively light weight, and limits the application of gas turbines on two-component fuel. In addition, with the help of multi-stage lean combustion and premixing technology, fuel and air are mixed fairly evenly, eliminating the fuel enrichment area and ensuring uniform temperature distribution at the combustion chamber outlet, while the low fuel gas/air ratio ensures the outlet temperature a combustion chamber that is not larger than the rated value, and high-efficiency stable combustion eliminating high-temperature distortion, and at the same time effectively ensuring low emissions, the problem of the above limitations can be solved; Publication No. CN102393028B proposed a low-emission combustion chamber based on this method, and a good low-emission effect was obtained.

Publication No. CN103486617B, which is a patent for an invention entitled “Low Emission Dual Fuel Burner for Gas Turbine”, states that by introducing a gaseous fuel and a flammable liquid separately, the dual fuel is used to To reduce nitrogen oxide emissions, a method of pre-mixing with lean fuel is used. When the main burner operates, a small amount of cooling air is drawn in to cool and protect the end surface of the auxiliary burner, but since the cooling effect of a small amount of cooling air is insufficient, the problem of high-temperature carbon deposits in the auxiliary burner arises.

The essence of the invention

The purpose of the present invention is to solve the problem of excessive high temperature carbon formation in auxiliary burners in existing low emission dual fuel burners. In addition, a low emission nozzle, a low emission two-component combustion chamber, and a gas turbine generator unit are proposed.

The technical solutions according to the present invention are as follows:

Solution 1: The low emission nozzle according to this embodiment includes a first combustible gas line, a second combustible gas line, an atomizing air line, a flammable liquid line, a purge air line, and a nozzle body; the first combustible gas line, the second flammable gas line, the atomizing air line, and the flammable liquid line are connected to the main part of the nozzle, providing the flammable gas inside, the gas outside, and the fuel line crossing with the gas line, wherein the atomizing air line, the first line for flammable gas and the line for flammable liquid ensure the unit enters the idle mode and share the air swirler of the first line for flammable gas; the line for atomizing air, the second line for flammable gas and the line for flammable liquid ensure that the unit enters the operating mode and share the air swirler of the second line for flammable gas; The purge air line is connected to the fuel discharge side of the nozzle main body, and the purge air line uses pulsed convection cooling, gas film cooling and adiabatic cooling to prevent carbon deposits from forming in the nozzle hole area.

Solution 2: The combustion chamber for a two-component low emission fuel comprises an outer combustion chamber casing, an inner combustion chamber casing and a flame tube, as well as a front force casing, a rear support casing, a combustion chamber outlet, a diffuser, a combustion chamber inlet, fixing devices and a nozzle with low emissions; the outer casing of the combustion chamber is hermetically connected to the front force-receiving casing and the rear support casing by means of annular flanges on the front part and the rear part, respectively; the internal casing of the combustion chamber is connected by means of an annular flange on the front part to the front force-receiving casing and, together with the outer casing of the combustion chamber, forms a volumetric annular working cavity; a diffuser is attached to a rear portion of the combustion chamber inner casing, the end portion of the diffuser being an inlet of the combustion chamber; the combustion chamber outlet is made in the rear support casing; the flame tube is installed in a volumetric ring-shaped working space; a low emission nozzle is passed through a mounting hole with an annular conical surface in the front part of the front force-receiving casing and inserted into a socket in the head part of the flame tube; the flame tube in the middle part is equipped with main combustion holes; two fixing devices are connected to the head part of the flame tube; The mounting base of the tail part of the flame tube is mounted on the rear support casing by means of a three-point support.

Solution 3: a gas turbine generator unit that includes a low emission dual fuel combustion chamber as described above, a low emission dual fuel supply control system, a compressor, a turbine wheel and a generator; the low emission dual fuel combustion chamber is connected to the low emission dual fuel nozzle ring tube system of the low emission dual fuel supply control system;

the air leaving the compressor with high temperature and high pressure enters the diffuser with deceleration and diffusion from the combustion chamber inlet and then passes into the annular cavity of the combustion chamber; The air is then distributed into the low emission nozzle and mixed with the flammable liquid or gaseous fuel to form a flammable mixture that burns steadily with high efficiency in the flame tube and is discharged through the combustion chamber outlet, which drives the turbine wheel to provide power output for the generator. electricity;

wherein the low emission two-component fuel supply control system comprises a flammable liquid supply system, a gaseous fuel supply system, a flammable liquid purge system, a gaseous fuel purge system, an auxiliary atomization air supply system and a low emission nozzle ring tube system;

wherein the low emission nozzle annular tube system F comprises a flammable liquid annular tube, an auxiliary atomizing air annular tube, a first line annular fuel gas ring tube, and a second line fuel gas annular tube; the annular pipe for flammable liquid, the auxiliary annular pipe for atomizing air, the annular pipe of the first line for gaseous fuel and the annular pipe of the second line for gaseous fuel are respectively connected by means of outlet pipes to the inlet pipe of the flammable liquid line, the auxiliary inlet pipe of the line for atomization air, the first a gas fuel inlet and a second gas inlet on the low emission nozzle;

when burning a flammable liquid:

in the following operating mode of ignition and idle mode: the flammable liquid supply system is put into operation, the gaseous fuel supply system is not put into operation, the flammable liquid purge system is not put into operation, the gaseous fuel purge system is put into operation, the auxiliary atomization air supply system is put into operation work;

wherein the flammable liquid supply system through the flammable liquid flow line is introduced into the combustible liquid annular tube of the low emission nozzle annular tube system and then introduced into the flammable liquid line of the low emission nozzle;

the auxiliary atomizing air supply system, through the auxiliary atomizing air flow line, is introduced into the auxiliary atomizing air ring tube and then introduced into the atomizing air line of the low emission nozzle to effect auxiliary atomization of the flammable liquid;

The fuel gas purge system is divided into two flow lines, namely the 1st branch fuel gas flow line purge line and the 2nd branch fuel gas flow line purge line, to realize the purging of the fuel gas annular tube and the inner channel of the nozzle with low emission for the purpose of cleaning when they are in non-operating mode;

in the above idle mode: the atomizing air line purge air source through the auxiliary atomizing air supply system controls the supply for the atomizing air purge line of the flammable liquid line purge system, that is, the auxiliary atomizing air pneumatic source supplies compressed air from the annular cavity space formed by external casing of the combustion chamber for two-component fuel with low emissions and a flame tube, while other systems remain unchanged;

when burning gaseous fuel:

the flammable liquid supply system is turned off, the gaseous fuel supply system is put into operation, the flammable liquid purge system is put into operation;

in the following operating ignition mode and idle mode:

The compressed air from the annulus space of the combustion chamber for low emission two-component fuel is introduced into the flammable liquid line of the flammable liquid supply system, the 2nd branch line purge line of the gaseous fuel flow line of the gaseous fuel purge system, and the auxiliary atomization air line of the auxiliary atomization air supply system ;

the fuel gas is introduced into the first gaseous fuel line annular tube of the low emission nozzle ring tube system by the gaseous fuel supply system, and then introduced into the first gaseous fuel inlet pipe of the low emission nozzle;

the flammable liquid purging system is in the purge operating mode; the auxiliary inlet pipe of the line for atomization air and the inlet pipe of the line for flammable liquid supply compressed air from the space of the annular cavity formed by the outer casing of the combustion chamber for a two-component fuel with low emissions and a flame tube, with the implementation of cooling by purging all channels;

in the above idle mode:

the gaseous fuel purging system is turned off; The fuel gas, through the gaseous fuel supply system, is simultaneously introduced into the annular tube of the first gaseous fuel line of the low emission nozzle annular tube system and the annular tube of the second line for gaseous fuel, and then introduced respectively into the first combustible gas line and the second combustible gas line of the nozzle with low emissions;

When switching between gaseous fuel and flammable liquid, the flammable liquid purging system and the gaseous fuel purging system are turned off, and the flammable liquid supply system and the gaseous fuel supply system are put into operation.

Compared with analogues known from the prior art, the present invention has the following effects:

1. The low emission nozzle according to the present invention adopts a purge air line, and the purge air line according to the present invention, through pulsed convection cooling, gas film cooling and adiabatic cooling, prevents the formation of carbon deposits in the area of the nozzle opening, effectively reduces the temperature of the main working components and Extends nozzle life with low emissions.

2. The low emission dual fuel combustion chamber of the present invention effectively combines low emission multi-stage lean combustion and premixing technology and a low emission dual fuel nozzle; When using gaseous fuel in the combustion chamber, gaseous fuel and air are introduced through small holes in the swirler of the low emission nozzle with good uniform mixing, and by burning a pre-prepared mixture of fuel and air, the amount of pollutant emission is reduced; By using a flammable liquid in the combustion chamber through a low emission nozzle equipped with an auxiliary air atomization function at the center of the low emission nozzle, the problem of distributing the flammable liquid in the same distribution structure is solved, and based on the fact that the low emission nozzle satisfies the requirements to the use of two-component fuel, the goal of reducing the emission of pollutants from a gas turbine can be achieved using lean combustion technology with the combustion of a pre-prepared mixture of fuel and air when using gaseous fuel; In order to cooperate with the low emission bifuel combustion chamber proposed by the present invention for efficient operation, the present invention also provides a bifuel supply control system; This two-component fuel supply control system, based on application requirements, can supply gaseous fuel or flammable liquid to the equipment line and realize fuel regulation, and can also realize rapid and stable switching of gaseous/liquid fuel under continuous operation conditions; at the same time, to prevent the formation of high-temperature carbon deposits in another fuel line when operating on one type of fuel, a purge system is provided in the two-component fuel supply control system; The present invention can achieve simultaneous combustion of fuel gas and flammable liquid by a gas turbine, reducing emissions and environmentally friendly high-efficiency operation with low carbon emissions from the gas turbine.

3. According to the present invention, when the gas turbine uses flammable liquid in the case of starting and running in low-intensity mode, auxiliary atomizing air is actively supplied through the air line of the low-emission liquid fuel nozzle, thereby improving the ignition function and combustion efficiency; in high-intensity operating mode, by using compressed air in the annular cavity of the combustion chamber, the air in the combustion chamber due to the pressure difference is thrown into the air line of the low-emission nozzle, which enhances the atomization of the flammable liquid, further improves combustion efficiency and can, in the case of one line for the flammable liquid Help effectively solve the problem of ignition and poor atomization effect in idle mode, while meeting the requirements for the use of two-component fuel.

4. When working on gaseous fuel, using the two-stage method of lean combustion and pre-mixing, the degree of uniform mixing of gaseous fuel and air increases, while the ratio of the amount of air in the air swirler 2-5 of the first line and the air swirler 2-9 of the second line is 1:7 , the fuel supply in the 1st branch line B0-1 gaseous fuel corresponds to the supply of fuel in the 2nd branch line B0-2 gaseous fuel, by adjusting the same equivalent ratio of the two-level combustion area is ensured, which is in the low emission area 2.5-4 ,5, and ensures that the temperature of the combustion region is in the low-emission combustion temperature control region from 1700°C to 1900°C, resulting in highly efficient and stable combustion; at the same time, the amount of NOx emissions is regulated in the low emission range, and the fact that the flame tube in the middle part is equipped with main combustion holes provides additional mixing of air with fuel, reduces the temperature in the main combustion zone, increases the emission reduction effect, and, Finally, the value in the GB13223-2011 emission standard is reached or exceeded.

5. According to the present invention, when the gas turbine uses gaseous fuel in the case of startup and operation in low-intensity mode, only the first line air swirler 2-5 and the 1st branch gaseous fuel line supply unit B0-1 are used; When operating in high-intensity mode, the air swirler 2-9 of the second line and the 2nd branch line B0-2 of the gaseous fuel work together with the 1st branch line B0-1 of the gaseous fuel and can ensure sufficient mixing of the gaseous fuel with the air, while releasing pollutants substances are even lower. The effective interaction of idle mode with high-intensity operation with uniform good atomization of flammable liquids and unified planning, which takes into account the use of low-emission gaseous fuels, ensure highly efficient operation of the gas turbine in any operating modes on several types of fuel, maintaining such characteristic advantages as low The volume and relatively low weight of the gas turbine expand the range of gas turbine fuels used, reduce nitrogen oxide emissions and ensure highly efficient use of energy sources.

6. According to the present invention, the low-emission two-component fuel supply control system, based on application requirements, can supply gaseous fuel or flammable liquid to the equipment line and realize fuel regulation, and can also realize prompt stable switching of gaseous/liquid fuel under continuous operation conditions; at the same time, to prevent the formation of high-temperature carbon deposits in another fuel line when operating on one type of fuel, a purge system is provided in the fuel supply control system, which prevents the formation of carbon deposits in the fuel line.

7. According to the present invention, through the integrated design of the low emission nozzle for two-component fuel, a combination of diffuse combustion of flammable liquid and combustion of a pre-prepared mixture containing gaseous fuel is achieved, and through a combination of additive manufacturing and machining, the technically difficult task of forming complex structural elements and precise machining of the main parts and ensures good operation of the nozzle with low emissions for two-component fuel in different operating modes of the gas turbine; When using gaseous fuel in a gas turbine, gaseous fuel and air are ejected through small holes in the low emission nozzle swirler to ensure good mixing, and by burning a pre-prepared mixture of fuel and air, the amount of pollutant emission is reduced; By using flammable liquid in the gas turbine through a low emission nozzle equipped with an auxiliary air atomization function at the center of the low emission nozzle, the problem of poor flammable liquid atomization effect at low operating conditions of the gas turbine is solved; Based on the fact that the requirements for the use of two-component fuel in a low emission nozzle are met, the goal of reducing the emission of pollutants from a gas turbine can be achieved using lean combustion technology by burning a pre-prepared mixture of fuel and air using a gaseous fuel; at the same time, a system for controlling the supply of two-component fuel with low emissions is proposed; This two-component fuel supply control system, based on application requirements, can supply gaseous fuel or flammable liquid to a gas turbine and realize fuel regulation, and can also realize rapid and stable switching of gaseous/liquid fuel under continuous operation conditions; at the same time, to prevent the formation of high-temperature carbon deposits in another fuel line when operating on one type of fuel, a purge system is provided in the fuel supply control system, thereby realizing the goal of preventing the formation of carbon deposits in the fuel line.

Description of the attached graphic materials

In fig. 1 is a schematic representation of the structure of a gas turbine generator unit according to the present invention;

in fig. 2 is a schematic diagram of the structure of the interior of a low emission nozzle according to the present invention;

in fig. 3 is a front view of a low emission nozzle according to the present invention;

in fig. 4 shows the image on the right of FIG. 3;

in fig. 5 shows the image on the left of FIG. 3;

in fig. Figure 6 shows a schematic representation of the design of the sealing unit.

Specific Embodiments

Specific Embodiment 1: This embodiment is described with reference to FIG. 1-6; The low emission nozzle according to this embodiment includes a first combustible gas line, a second combustible gas line, an atomizing air line, a flammable liquid line, a purge air line, and a nozzle body; the first combustible gas line, the second flammable gas line, the atomizing air line, and the flammable liquid line are connected to the main part of the nozzle, providing the flammable gas inside, the gas outside, and the fuel line crossing with the gas line, wherein the atomizing air line, the first line for flammable gas and the line for flammable liquid ensure the entry of the unit into idle mode and share the air swirler 2-5 of the first line for flammable gas; the line for atomizing air, the second line for flammable gas and the line for flammable liquid ensure that the unit enters the operating mode and share the air swirler 2-9 of the second line for flammable gas; The purge air line is connected to the fuel discharge side of the nozzle main body, and the purge air line uses pulsed convection cooling, gas film cooling and adiabatic cooling to prevent carbon deposits from forming in the nozzle hole area.

The nozzle according to this embodiment is a low emission nozzle for low emission dual fuel, which adopts the design idea of integrating two fuel lines; The low emission nozzle body and swirler adopt additive manufacturing and processing and integrated molding; The main components of the low emission combustible nozzle line are processed separately using a precision machining method, and the main components are made dismountable; The use of methods combining additive manufacturing and machining ensures the efficient formation of complex structural elements and meets the requirements for the precision of processing of precision elements.

Specific Embodiment 2: This embodiment is described with reference to FIG. 2; the nozzle body according to this embodiment includes a low emission nozzle body 5-1 and a combustion chamber cover plate 5-2; a combustion chamber cover plate 5-2 is mounted on the fuel inlet port of the low emission nozzle body 5-1. This arrangement facilitates connection and combination with the flame tube of the combustion chamber and ensures the ignition function. Other components and connection methods are the same as in Specific Embodiment 1.

Specific Embodiment 3: This embodiment is described with reference to FIG. 2; the line for flammable liquid according to this embodiment contains a flammable liquid swirler 1-1, a screw plug 1-4, a sealing cap 1-17, a sealing unit, a rotary plug 1-14, a heat-insulating tube 1-13 for flammable liquid, an inlet pipe 1- 9 lines for flammable liquid, connecting cap 1-10 line for flammable liquid, connecting conical tube 1-11 line for flammable liquid and filtration unit 1-12 for flammable liquid; the connecting conical tube 1-11 of the flammable liquid line is fixed in the combustion chamber cover plate 5-2; the filtration unit 1-12 for flammable liquid is installed in the connecting conical tube 1-11 of the line for flammable liquid; the inlet pipe 1-9 of the flammable liquid line is installed on the connecting conical tube 1-11 of the flammable liquid line by means of a connecting cap 1-10 of the flammable liquid line; the flammable liquid swirler 1-1 and the screw plug 1-4 are installed on the same centerline in the low-emission nozzle body 5-1; the sealing cap 1-17 tightly closes the screw plug 1-4 through the sealing unit; the rotary plug 1-14 is screwed onto the sealing cap 1-17, and the heat-insulating tube 1-13 for the flammable liquid at its two ends is made in communication, respectively, with the swirler 1-1 of the flammable liquid and the connecting conical tube 1-11 of the line for the flammable liquid. With this arrangement of this embodiment, a flammable liquid heat insulating tube 1-13 is provided on the outside of the fuel line (that is, the flammable liquid line) to prevent fuel carbon deposits from forming in the channel; A purge air line is provided outside the nozzle hole of the low emission nozzle to prevent the formation of carbon deposits, and carbon deposits from high-temperature fuel can be effectively prevented from forming carbon deposits in the area of the nozzle hole. In this case, the inlet pipe 1-9 of the line for flammable liquid is a heat-insulating inlet pipe; other components and connection methods are the same as in specific embodiment 1 or 2.

Specific Embodiment 4: This embodiment is described with reference to FIG. 6; the sealing assembly according to this embodiment includes an annular ring 1-15, a sealing ring 1-16 and a steel ring 1-18; the seal ring 1-16 is an annular seal ring; the sealing ring 1-16 in the upper part is equipped with a tapering stepped groove 1-16-1; steel ring 1-18 is tightly inserted into o-ring 1-16; the circular ring 1-15 on the side surface in the lower part is tapered and stepped; the circular ring 1-15 is inserted into the stepped groove 1-16-1 of the sealing ring 1-16, and the upper end surface of the circular ring 1-15 is positioned lower than the upper end surface of the sealing ring 1-16.

With this arrangement in this embodiment, the circular ring 1-15, the sealing ring 1-16 and the steel ring 1-18 form a single structure in which the upper part of the sealing ring covers the circular ring 1-15, and when the sealing ring is located in the blowing slot jet between the sealing cap 1-17 and the low-emission nozzle body 5-1, the purpose of providing a tighter connection can be realized. At the same time, when the O-ring 1-16 and the steel ring 1-18 are used for a long time, particularly when exposed to high-temperature environments, thermal expansion may occur, and under the action of the steel ring, the tightness is further enhanced and prevented decompaction.

In addition, in this embodiment also, the upper end surface of the circular ring 1-15 is located lower than the upper end surface of the seal ring 1-16, and when screwing the rotary plug 1-14, a pressing force is additionally applied to the seal assembly, and the gap between rotating plug 1-14 and sealing cap 1-17, which prevents loss of O-ring efficiency or leakage and leakage of fuel, and ensures smooth operation of the nozzle with low emissions.

Other components and connection methods are the same as in specific embodiments 1, 2 or 3.

Specific Embodiment 5: This embodiment is described with reference to FIG. 2; The atomizing air line according to this embodiment includes an atomizing air swirler 1-2, a cap 1-3, an auxiliary atomizing air line inlet 1-6, an auxiliary atomizing air line connecting cap 1-7, and an auxiliary conical line pipe 1-8. for air atomization; the swirler 1-2 of the atomizing air is put on the swirler 1-1 of the flammable liquid and the screw plug 1-4; the cap 1-3 is placed on the atomization air swirler 1-2 and is located on one side of the flammable liquid swirler 1-1; the auxiliary inlet pipe 1-6 of the atomization air line is installed on the combustion chamber cover plate 5-2; The atomizing air line auxiliary inlet pipe 1-6 is connected to the atomizing air line auxiliary connecting cap 1-7 with the atomizing air line auxiliary conical tube 1-8; The lower part of the auxiliary conical tube 1-8 of the atomization air line is made in communication with the atomization air swirler 1-2 through the auxiliary channel 1-5 for the atomization air. In this embodiment, the atomizing air line can effectively atomize and eject fuel into the flammable liquid line, thereby promoting ignition. Other components and connection methods are the same as in any of the specific embodiments 1-4.

Specific Embodiment 6: This embodiment is described with reference to FIG. 2; The first fuel gas line according to this embodiment comprises a first fuel gas inlet pipe 2-1, a first gas fuel connection cap 2-2, a first gas fuel connection conical tube 2-3, an arcuate bracket 2-4, a swirler 2- a first line air 5, a first line premix clamp 2-6, a first cup 2-7 and a second cup 2-8;

the first connecting conical tube 2-3 for gaseous fuel is installed on the cover plate 5-2 of the combustion chamber; the first gaseous fuel inlet pipe 2-1 is mounted on the first gaseous fuel connecting pipe 2-3 by means of a first gaseous fuel connecting cap 2-2; an arcuate bracket 2-4 is installed on the end portion of the ejection side of the combustible body 5-1 of the low emission nozzle; the first line air swirler 2-5 is installed at the rear end of the arcuate bracket 2-4; the first line clamping element 2-6 for pre-mixing is located on the same centerline with the first line air swirler 2-5 and is inserted into the tail portion of the first line air swirler 2-5; the first cup-shaped element 2-7 and the second cup-shaped element 2-8 in the direction from the inside to the outside surround the clamping element 2-6 of the first line for pre-mixing; The first connecting conical tube 2-3 for gaseous fuel with its lower part is made in communication with the first line air swirler 2-5 through the first gas line channel. This arrangement helps ensure combustion of the gas and can also provide a purge system to prevent carbon deposits in the low emission nozzle. Other components and connection methods are the same as in any of specific embodiments 1-5.

Specific Embodiment 7: This embodiment is described with reference to FIG. 2; The second line for combustible gas according to this embodiment comprises a second line air swirler 2-9, a second line swirler body 2-10, a second fuel gas inlet pipe 3-1, a second gaseous fuel connection cap 3-2, a second connecting conical tube. 3-3 for gaseous fuel, pad 3-4, rim 3-5 and clamping element 3-6 of the second line for pre-mixing;

the body 2-10 of the second line swirler is mounted on the first line air swirler 2-5 by means of a lining 3-4; the second line air swirler 2-9 is installed on the second line swirler housing 2-10; the clamping element 3-6 of the second line for pre-mixing by means of the rim 3-5 is installed on the body 2-10 of the second line swirler; a second connecting conical tube 3-3 for gaseous fuel is installed on the combustion chamber cover plate 5-2; the second gaseous fuel inlet pipe 3-1 is connected to the second gaseous fuel connecting conical tube 3-3 by means of a second gaseous fuel connecting cap 3-2; the second connecting conical tube 3-3 for gaseous fuel is made in communication with the air swirler 2-9 of the second line through the channel of the second gas line. This arrangement helps ensure gas combustion and can also provide a purge system to prevent carbon deposits from forming in the lower outlet nozzle. Other components and connection methods are the same as in any of the specific embodiments 1-5.

Specific Embodiment 8: This embodiment is described with reference to FIG. 2-4; according to this embodiment, the purge air line comprises a gas line for pulsed convection cooling, a gas line for gas film cooling and a gas line for adiabatic cooling, wherein:

in the gas line for pulsed convection cooling: the body 2-10 of the second line swirler is equipped with many cold blowing holes 6-3 to prevent the formation of carbon deposits along the second path, while external cold air is supplied through many cold blow holes 6-3 to prevent the formation of carbon deposits along the second path path enters and passes into the internal cooling channel formed by the swirler of the second line, the clamping element 2-6 of the first line for pre-mixing and the first cup-shaped element 2-7 in the housing 2-10, and due to the gas pressure difference through several rows of holes in the first the cup-shaped element 2-7 provides pulsed cooling of the clamping element 2-6 of the first line for pre-mixing; cold air from the external purge system through the first cold purge nozzle holes 6-4 to prevent carbon formation along the second path and the second cold purge nozzle holes 6-5 to prevent carbon formation along the second path is thrown into the combustion space to form a heat-insulating protective gas film, and Finally, through the method of combining pulse convection cooling and gas film cooling, the temperature of the first premixing line clamping member 2-6 is reduced;

in the gas line for cooling with a gas film: the air swirler 2-5 of the first line is equipped with a plurality of cold blowing holes 6-1 to prevent the formation of carbon deposits along the first path; cold air from the external purge system through a plurality of cold purge holes 6-1 to prevent the formation of carbon deposits along the first path enters, passes into the cooling channel inside the cap 1-3, and finally through the cold purge nozzle holes 6-2 to prevent the formation of carbon deposits along in the first way it is released into the combustion space with the formation of a heat-insulating protective gas film and a decrease in the temperature of the cap 1-3;

in the gas line for adiabatic cooling: the rim 3-5 is equipped with a plurality of cold purge holes 6-6 to prevent the formation of carbon deposits by cooling along the third path, while cold air from the external purge system through a plurality of cold purge holes 6-6 to prevent the formation of carbon deposits by cooling along the third path the third path passes into the internal cooling channel formed by the body 2-10 of the second line swirler, the rim 3-5 and the clamping element 3-6 of the second line for pre-mixing, and finally through a plurality of holes in the clamping element 3-6 of the second line for pre-mixing mixing is released into the combustion space to form a heat-insulating protective gas film with a decrease in the temperature of the clamping element 3-6 of the second line for pre-mixing.

According to this embodiment, the purge air line is generally provided with 3 air cooling channels, which are respectively the fuel line coke prevention purge channel (gas line for gas film cooling), the cooling purge channel of the clamping element 2-6 of the first premixing line (gas line for pulse convection cooling) and the cooling purge channel of the clamping element 3-6 of the second line for premixing (gas line for adiabatic cooling);

a stream of cooling air through the cold purge holes 6-1 to prevent carbon deposits along the first path penetrates the low emission nozzle, passes through the cooling channel inside the cap 1-3 and finally through the cold purge nozzle holes 6-2 to prevent carbon deposits along in the first way it is released into the combustion space with the formation of a heat-insulating protective gas film and a decrease in the temperature of the cap 1-3, which prevents the formation of soot;

another jet of cooling air through the cold purge holes 6-3 penetrates the low emission nozzle, passes through the internal cooling channel formed by the second line swirler body 2-10, the first line premix clamp 2-6 and the first cup element 2-7 , due to the pressure difference through several rows of holes in the first cup-shaped element 2-7, provides pulsed cooling of the clamping element 2-6 of the first line for pre-mixing and, finally, through the first nozzle holes 6-4 of cold blowing to prevent the formation of carbon deposits along the second path and the second nozzle holes 6-5 of cold blowing to prevent the formation of carbon deposits along the second path are thrown into the combustion space with the formation of a heat-insulating protective gas film, while due to the combination of the pulsed convection cooling method and the gas film cooling method, the temperature of the clamping element 2-6 of the first line is reduced for pre-mixing, which protects the clamping element 2-6 of the first line for pre-mixing;

the third jet of cooling air through the cold blowing holes 6-6 to prevent the formation of carbon deposits by cooling along the third path penetrates the nozzle with low emissions, passes through the internal cooling channel formed by the body 2-10 of the second line swirler, the rim 3-5 and the clamping element 3- 6 of the second premixing line, and finally, through a plurality of small holes in the clamping element 3-6 of the second premixing line, is discharged into the combustion space to form a heat-insulating protective gas film and reducing the temperature of the clamping element 3-6 of the second premixing line. Other components and connection methods are the same as in any of the specific embodiments 1-7.

Specific Embodiment 9: This embodiment is described with reference to FIG. 4; According to this embodiment, the first cold blow nozzle holes 6-4 for preventing carbon formation in the second path and the second cold blow nozzle holes 6-5 for preventing carbon formation in the second path are formed in annular rows in the clamp member 2-6 of the first premix line. This arrangement promotes the formation of a ring-shaped gas film to reduce temperature; other components and connection methods are the same as in any of specific embodiments 1-8.

Specific Embodiment 10: This embodiment is described with reference to FIG. 4; According to this embodiment, the second path carbon deposit prevention first cold purge nozzle holes 6-4 are oval nozzle holes, and a plurality of second path carbon deposit prevention first cold purge nozzle holes 6-4 are arranged in an annular row with a clockwise inclination . This arrangement promotes the formation of a ring-shaped gas film with a rotation angle, and such a gas film is more dense; Moreover, the area of the vortex flow when the air flow comes into contact with the external environment per unit length is large, and the temperature reducing effect is good. Other components and connection methods are the same as in any of specific embodiments 1-9.

Specific Embodiment 11: This embodiment is described with reference to FIG. 4; According to this embodiment, the second cold blow nozzle holes 6-5 for preventing carbon deposits along the second path are rectangular nozzle holes. With this arrangement, the directly exhausted cold air can quickly reduce the temperature of the relevant components. Other components and connection methods are the same as in any of the specific embodiments 1-10.

According to the present invention, the low emission nozzle is a single structure which mainly includes a first combustible gas line, a second combustible gas line, an atomizing air line, a flammable liquid line, and a purge air line to prevent the formation of soot.

For two fuel lines (namely the flammable liquid line and the flammable gas line), the design idea of integration is applied; The low emission nozzle body and swirler adopt additive manufacturing and processing and integrated molding; The main components of the low emission combustible nozzle line are processed separately using a precision machining method, and the main components are made dismountable; The use of methods that combine additive manufacturing and machining ensures the efficient formation of complex structural elements and meets the requirements for precision processing of precision elements. The single low emission nozzle contains 2 lines for gaseous fuel (namely lines for flammable gas), 1 line for flammable liquid and 1 line for atomizing air; the inner side is a flammable liquid line, and the outer side is a gaseous fuel line, wherein the flammable liquid line and the gaseous fuel line are arranged to cross each other; the atomizing air line, the flammable liquid line and the first flammable gas line can ensure that the gas turbine generator unit (hereinafter referred to as “unit”) enters the idle mode, and the flammable liquid line and the first flammable gas line share the air swirler 2-5 of the first lines; the atomization air line, the flammable liquid line and the second flammable gas line ensure that the unit enters the maximum mode, and the flammable liquid line and the second flammable gas line share the second line air swirler 2-9; on the outside of the line for flammable liquid, a heat-insulating tube for flammable liquid is provided upstream, which prevents the flammable liquid from forming carbon deposits in the channel; There is an anti-carbon purge air line outside the nozzle hole of the low emission nozzle, which can effectively prevent the flammable liquid from forming carbon deposits in the area of the nozzle holes at high temperature. The first flammable gas line and the second flammable gas line are provided with channels for gaseous fuel; these channels communicate with the caps; holes for air removal are evenly made on the end surfaces of the caps; the cap is located in the radial air swirler; on the periphery, where the cap is located on the swirler, an annular cavity is provided; the housing is equipped with a channel for suction of fuel, communicating with the annular cavity; the swirler is equipped with a channel for fuel outflow, communicating with the annular cavity; the spraying unit for the vortex flow of flammable liquid contains a channel for flammable liquid, a swirler for flammable liquid, nozzle holes for flammable liquid and an air cooling device to prevent the formation of soot; The auxiliary unit for spraying flammable liquid contains an auxiliary channel for spray air, an auxiliary swirler for spray air and auxiliary nozzle holes for spray air. The flammable liquid swirler is inserted into the inner cavity of the atomizing air swirler, both of which are firmly installed in the low emission nozzle body by means of a removable press-fit mounting unit based on the rated torque; A removable, durable push-fit assembly through a pad, back-up washer and threaded plug provides a threaded connection to the low-emission nozzle body, facilitating repair, cleaning and replacement of key operating components, reducing low-emission nozzle development time and extending low-emission nozzle life. emissions. The air cooling unit to prevent the formation of carbon deposits in the area of the flammable liquid nozzle holes, through the perpendicular air inlet hole in the front of the first line air swirler 2-5, draws air into the outer ring of the central flammable liquid nozzle holes to form an air cooling channel, which effectively reduces temperature of the main working components; an air cooling unit to prevent the formation of carbon deposits in the area of the clamping element through an inclined air inlet between the air swirler 2-5 of the first line and the air swirler 2-9 of the second line draws air into two lines in the area of the outlet side of the clamping element with its twisting and ejection, and by means of pulse cooling and gas film cooling the temperature of the clamping element components is reduced.

Specific Embodiment 12: This embodiment is described with reference to FIG. 1; According to this embodiment, the combustion chamber for a two-component low emission fuel includes an outer combustion chamber casing 8-1, an inner combustion chamber casing 8-2 and a flame tube 8-3, and it further comprises a front force-receiving casing 8-4, a rear support casing 8-5, combustion chamber outlet 8-5A, diffuser 8-6, combustion chamber inlet 8-6A, 8-7 fixing devices and low emission nozzle; The combustion chamber outer casing 8-1 is sealed with the front force-receiving casing 8-4 and the rear support casing 8-5 by means of annular flanges on the front part and the rear part, respectively; the internal casing 8-2 of the combustion chamber is connected to the front force-receiving casing 8-4 by means of an annular flange on the front part, and together with the outer casing 8-1 of the combustion chamber forms a volumetric annular cavity 8A of the combustion chamber; a diffuser 8-6 is attached to a rear portion of the combustion chamber inner casing 8-2, the end portion of the diffuser 8-6 being a combustion chamber inlet 8-6A; the combustion chamber output 8-5A is provided in the rear support casing 8-5; the flame tube 8-3 is installed in a volumetric annular working space; the low emission nozzle is passed through a mounting hole with an annular conical surface in the front part of the front force-receiving casing 8-4 and inserted into a socket in the head part of the flame tube 8-3; the flame tube 8-3 in the middle part is equipped with main combustion holes 8-3A; two fixing devices 8-7 are connected to the head part of the flame tube 8-3; the mounting base of the tail part of the flame tube 8-3 is mounted on the rear support casing 8-5 by means of a three-point support.

In this case, the low emission nozzle is inserted into a socket in the head part of the flame tube through an installation hole with an annular conical surface in the front part of the front force-receiving casing and secured and sealed by the low emission nozzle mounting flange; the cylindrical middle part of the flame tube is equipped with main combustion holes and is secured by connecting the head part with fixing devices in two places and a three-point support of the mounting base in one place of the tail part; the outer casing of the combustion chamber is connected, respectively, to the front force-receiving casing and the rear support casing by means of annular flanges on the front part and the rear part to provide a seal; the internal casing of the combustion chamber is connected by means of an annular flange on the front part to the front force-receiving casing and, together with the outer casing of the combustion chamber, forms a volumetric annular working space; a diffuser is connected to the rear part of the internal casing of the combustion chamber; The combustion chamber rear support casing is designed to provide installation of the flame tube mounting base at the combustion chamber outlet.

Other components and connection methods are the same as in any of the specific embodiments 1-11.

Specific Embodiment 13: This embodiment is described with reference to FIG. 1-6; The low emission nozzle according to this embodiment is the low emission nozzle according to any of the specific embodiments 1 to 11. Other components and connection methods are the same as in any of the specific embodiments 1-12.

Specific Embodiment 14: This embodiment is described with reference to FIG. 1-6; According to this embodiment, a gas turbine generator unit is provided that includes a low emission dual fuel combustion chamber 8 as described in specific embodiments 12-13, a low emission dual fuel supply control system, a compressor 7, a turbine wheel 9, and a generator 10; The low emission dual fuel combustion chamber 8 is connected to the low emission dual fuel nozzle ring tube system F of the low emission dual fuel supply control system;

the high-temperature, high-pressure air exiting from the compressor 7 enters from the combustion chamber inlet 8-6A into the diffuser 8-6 with retardation and diffusion, and then passes into the combustion chamber annular cavity 8A; the air is then distributed into the low emission nozzle 11 and mixed with the flammable liquid or gaseous fuel to form a flammable mixture, which burns stably with high efficiency in the flame tube 8-3 and is discharged through the combustion chamber outlet 8-5A, which drives the turbine wheel 9 with provision of output power for generating electricity by the generator 10;

wherein the low emission two-component fuel supply control system comprises a flammable liquid supply system A, a gaseous fuel supply system B, a flammable liquid purge system C, a gaseous fuel purge system D, an auxiliary atomization air supply system E and a low emission nozzle annular tube system F ;

wherein the low emission nozzle annular tube system F comprises an annular tube 1-9H for flammable liquid, an auxiliary annular tube 4-1H for atomizing air, a first line annular tube 2-1H for gaseous fuel, and a second line annular tube 3-1H for gaseous fuel; ring tube 1-9H for flammable liquid, auxiliary ring tube 4-1H for atomizing air, ring tube 2-1H of the first line for gaseous fuel and ring tube 3-1H of the second line for gaseous fuel are respectively connected to the inlet pipe 1- 9 lines for flammable liquid, auxiliary inlet pipe 1-6 lines for atomization air, first inlet pipe 2-1 for gaseous fuel and second inlet pipe 3-1 for gaseous fuel on the low emission nozzle;

when burning a flammable liquid:

in the following operating ignition mode and idle mode: flammable liquid supply system A is put into operation, gaseous fuel supply system B is not put into operation, flammable liquid purge system C is not put into operation, gaseous fuel purge system D is put into operation, auxiliary system E atomization air supply is put into operation;

wherein the flammable liquid supply system A through the flammable liquid flow line A0 is introduced into the combustible liquid annular tube 1-9H of the low emission nozzle annular tube system F and then introduced into the flammable liquid line of the low emission nozzle;

the auxiliary atomizing air supply system E, through the auxiliary atomizing air flow line E0, is introduced into the auxiliary atomizing air ring pipe 4-1H and then introduced into the atomizing air line of the low emission nozzle to carry out auxiliary atomization of flammable liquid;

Fuel gas purging system D is divided into two flow lines, namely 1st branch fuel gas flow line purging line D0-1 and 2nd branch fuel gas flow line purging line D0-2, to carry out purging of the annular fuel gas flow line and internal channel of low emission nozzles for cleaning purposes when they are not in operation;

in the above idle mode: the atomizing air line purge air source through the auxiliary atomizing air supply system E controls the supply for the atomizing air purge line C0-2 of the flammable liquid line purge system C, that is, the auxiliary atomizing air pneumatic source supplies compressed air from the space of the annular cavity formed by the outer casing of the combustion chamber for two-component fuel with low emissions and the flame tube, while the other systems remain unchanged;

when burning gaseous fuel:

system A for supplying flammable liquid is turned off, system B for supplying gaseous fuel is put into operation, system C for purging flammable liquid is put into operation;

in the following operating ignition mode and idle mode:

The compressed air from the annulus space of the combustion chamber for low emission two-component fuel is introduced into the flammable liquid line A0 of the flammable liquid supply system A, the 2nd branch line D0-2 of the gaseous fuel flow line of the gaseous fuel purge system D, and the auxiliary line E0 for air atomization auxiliary system E atomization air supply;

fuel gas is introduced into the first fuel gas line annular tube 2-1H of the low emission nozzle ring tube system F by the fuel gas supply system B and then introduced into the first gaseous fuel inlet pipe 2-1 of the low emission nozzle;

system C for purging flammable liquid is in the purge operating mode; auxiliary inlet pipe 1-6 of the line for atomization air and inlet pipe 1-9 of the line for flammable liquid supply compressed air from the space of the annular cavity formed by the outer casing of the combustion chamber for two-component fuel with low emissions and a flame tube, with the implementation of cooling by purging all channels;

in the above idle mode:

system D for purging gaseous fuel is turned off; the fuel gas, through the gaseous fuel supply system B, is simultaneously introduced into the ring tube 2-1H of the first gaseous fuel line of the low emission nozzle ring tube system F and the ring tube 3-1H of the second gaseous fuel line, and then introduced into the first gas line respectively and a second line for combustible gas of a low emission nozzle;

When switching between fuel gas and flammable liquid, the flammable liquid supply system C and the fuel gas supply system D are turned off, and the flammable liquid supply system A and the fuel gas supply system B are put into operation.

The combustion chamber and the fuel supply control system can ensure low emission of pollutants from the gas turbine during high-intensity operation using gaseous fuel, and can quickly and stably switch between gaseous fuel and flammable liquid under continuous operation conditions; and the goals of ensuring stable combustion of gas turbine two-component fuel, stable operational switching and reduction of pollutant emissions can be achieved.

Other components and connection methods are the same as in any of the specific embodiments 1-13.

In the low emission two-component fuel supply control system: when the fuel is burning, in the next idle mode, flammable liquid supply system A is put into operation, gaseous fuel supply system B is not put into operation, flammable liquid purge system C is not put into operation, system D purging of gaseous fuel has been put into operation, the auxiliary atomization air supply system E has been put into operation; wherein a flammable liquid is introduced into the flammable liquid ring tube of the low emission nozzle ring tube system F, then introduced into the flammable liquid line of the low emission nozzle for the two-component low emission fuel; The auxiliary atomizing air and the air drawn into the annular cavity of the combustion chamber are respectively introduced into the auxiliary atomizing air annular tube of the low emission nozzle annular tube system F, then introduced into the atomizing air line of the low emission nozzle for the low emission two-component fuel to realize auxiliary spraying of flammable liquid; air drawn into the annular cavity of the combustion chamber is introduced into the first combustible gas line and the second combustible gas line, then introduced into the gaseous combustible nozzle passage of the low emission nozzle to effect purging;

In the above idle mode, the atomization auxiliary air flow line purge is controlled by the atomization auxiliary air supply system E to operate the atomization air flow line to purge the flammable liquid line purge system C, that is, there is a general switch to compressed air in the combustion chamber annular cavity, when in this case, the remaining systems remain unchanged;

when burning gaseous fuel, system A for supplying flammable liquid is turned off, system B for supplying gaseous fuel is put into operation, system C for purging flammable liquid is put into operation; In the next idle mode, the compressed air in the annular cavity of the combustion chamber is introduced into the flammable liquid line of the flammable liquid supply system A, the 2nd branch purge line D0-2 of the fuel gas flow line of the fuel gas purge system D, and the auxiliary atomization air line of the auxiliary system E atomization air supply; the fuel gas is introduced into the first fuel gas line ring tube 2-1H of the low emission nozzle ring tube system F by the fuel gas supply system B, then introduced into the first fuel gas line 2-1H of the low emission nozzle; the compressed air in the annular cavity of the combustion chamber is introduced into the 2nd branch fuel gas line B0-2, then introduced into the second fuel gas line of the low emission nozzle to carry out purging; in the above idle mode, the gaseous fuel purging system D is turned off; The fuel gas, through the gaseous fuel supply system B, is simultaneously introduced into the ring tube 2-1H of the first gaseous fuel line of the low emission nozzle ring tube system F and the ring tube 3-1H of the second gaseous fuel line, and then introduced into the first gas line respectively. and a second line for flammable gas nozzles with low emissions.

When switching between combustion fuels: the flammable liquid purge system C and the gaseous fuel purge system D are not put into operation, the flammable liquid supply system A and the gaseous fuel supply system B are put into operation; When switching from gaseous fuel operation to flammable liquid operation, the opening degree of the control valve of gaseous fuel supply system B gradually decreases, the gaseous fuel flow rate gradually decreases, the opening degree of the control valve of flammable liquid supply system A gradually increases, the flow rate of flammable liquid gradually increases; When switching from flammable liquid operation to gaseous fuel operation, the opening degree of the flammable liquid supply system A control valve gradually decreases, the flammable liquid flow rate gradually decreases, the opening degree of the gaseous fuel supply system B control valve gradually increases, the gaseous fuel flow rate gradually increases; in both cases, the rates of increase and decrease are combined on the basis of calorific value, that is, the equality of the product of the rate of increase of a flammable liquid by its calorific value and the product of the rate of decrease of gaseous fuel by its calorific value is ensured, or the equality of the product of the rate of decrease of a flammable liquid by its calorific value and the rate of increase of gaseous fuel by its calorific value calorific value; When switching between fuels, strict control of the rate of increase and decrease for both cases is necessary to ensure the shortest possible switching time (switching time means the time required to completely switch from the fuel currently being used for the job to another to perform the job when a switch command is sent with the beginning of reference) and the most stable fluctuation of the power of the unit (fluctuation of the power of the unit means the ratio of the difference between the highest and lowest power of the unit to the power during stable operation of the unit during the switching process, in order to ensure the stability of the electrical network, in this case the range of fluctuations in the power of the unit is usually required no more than 10%).

Aspect of flammable liquid supply and auxiliary air atomization: When the flammable liquid is burning, from the moment of starting to idle mode, the auxiliary atomization air supply system E is put into operation to carry out auxiliary flammable liquid atomization; The auxiliary atomizing air supply system E is equipped with a throttling washer, and during operation can be used to regulate the pressure and flow rate of the auxiliary atomizing air, preventing the deterioration of the flammable liquid atomization effect caused by the auxiliary atomizing air pressure being too high or too low, resulting in incomplete combustion of the flammable liquid, which as a result, it leads to thermal blocking in the unit (thermal blocking usually means a phenomenon when it is impossible to ensure a normal increase in the rotation speed of the unit, no matter how fuel consumption increases, during the startup of the gas turbine); when the intensity of the idle mode increases, the atomizing air purge line of the flammable liquid purge system is put into operation, while the auxiliary atomizing air is adjusted to the compressed air in the annular cavity of the combustion chamber, and the effect of atomizing the flammable liquid in the next idle mode is further increased;

when burning liquid fuel, from the moment of starting into idle mode, the auxiliary atomization air supply system E is put into operation to carry out auxiliary atomization of the flammable liquid; when the intensity of the idle mode increases, a switch occurs from auxiliary atomizing air to compressed air in the annular cavity of the combustion chamber, and in the next idle mode the effect of atomizing the flammable liquid is further increased; when burning gaseous fuel, the fuel line is purged by means of air drawn from the combustion chamber, and from the moment of starting to idle mode, only the 1st branch line of gaseous fuel operates (namely the 1st branch line B0-1 of gaseous fuel); when the intensity of idling increases, the purging of the 2nd branch line of gaseous fuel stops (namely the 2nd branch line B0-2 of gaseous fuel) and gaseous fuel is introduced to carry out work, and as the intensity of the operating mode increases, the amount of fuel in the 1st branch the gaseous fuel line and the 2nd branch gaseous fuel line simultaneously increases; when a certain intermediate operating condition is reached, the amount of fuel in the 1st branch gaseous fuel line begins to decrease, while the amount of fuel in the 2nd branch gaseous fuel line continues to increase; immediately upon reaching the nominal operating mode, the equivalent ratios of the combustion areas corresponding to the two fuel lines are the same.

When burning gaseous fuel, when starting to idle mode, the amount of fuel is related to the exponential function for the high pressure and rotation speed of the gas turbine, and based on the equivalent ratio, the opening degree of the fuel control valve of the 1st branch gaseous fuel line is adjusted in real time to ensure combustion stability and prevent attenuation during the startup process.

When burning liquid fuel, when starting to idle, the auxiliary atomization air supply system E is equipped with a throttling washer to regulate the pressure and flow rate of the auxiliary atomization air, and prevent the deterioration of the fuel atomization effect caused by too high or too low pressure of the auxiliary atomization air, resulting in incomplete combustion of flammable liquid, which results in thermal blocking in the unit.

The equivalent ratio a of the combustion areas, the low emission range of which is 2.5<a<4.5, ensures that the temperature of the combustion areas is within the low emission combustion temperature control region and ultimately reaches or exceeds the value in the emission standard GB13223- 2011.

Control aspect of gaseous fuel: when combustion of gaseous fuel, air drawn from the combustion chamber is used to purge the line for flammable liquid; from the moment of starting to idle mode, only the first fuel gas line operates, and the amount of fuel is related to the function for high pressure and rotation speed of the gas turbine, and based on the equivalent ratio, the opening degree of the control valve of the 1st fuel gas line is adjusted in real time, to ensure combustion stability and prevent attenuation in the combustion chamber during the startup process; when the idle mode increases, the purging of the 2nd line of gaseous fuel stops and at the same time gaseous fuel is introduced to carry out work, while as the mode further increases, the amount of fuel in the 1st line of gaseous fuel (namely the first line for combustible gas) and the 2nd the gaseous fuel line (namely the second line for fuel gas) simultaneously increases; When a certain intermediate operating condition is reached (the intermediate operating condition is usually selected based on the characteristics of the gas turbine), the amount of fuel in the 1st gaseous fuel line begins to decrease, while the amount of fuel in the 2nd gaseous fuel line continues to increase; Immediately upon reaching the rated operating condition, the equivalent ratios of the combustion areas corresponding to the two fuel lines are essentially the same, and thus the goal of ensuring the lowest pollutant emission from the gas turbine is achieved.

In this embodiment, the flame tube is equipped with main combustion holes located in the cylindrical middle part, in the amount of 8 pieces, which are symmetrically distributed along the cross section and, on the one hand, provide replenishment with air mixing with the fuel, reduce the temperature in the main combustion zone and increase the effect of reducing emissions, and on the other hand, they regulate the uniformity of temperature distribution in the area of the combustion chamber exit and extend the total overhaul life of the unit.

In this embodiment, the flammable liquid supply system and the gaseous fuel supply system are provided with filtering devices to ensure the purity of the fuel. The flammable liquid swirl atomization unit is equipped with an inlet filtration unit, can effectively remove contaminants in the fluid, which increases the reliability and service life of the low emission nozzle, and is secured with a removable retaining ring, which makes it easy to replace and clean.

In this embodiment, the 1st line fuel gas supply unit and the 2nd line fuel gas supply unit are equipped with flow control elements, can be used to accurately control the flow rate of the fuel gas, and thereby ensure uniform flow through multiple low emission nozzles in a common gas assembly. turbines.

In this embodiment, the two-component fuel supply control system is provided with a gaseous fuel release valve and a flammable liquid relief valve to discharge the fuel gas not used in the pipeline and the unused flammable liquid and ensure the safe operation of the unit.

In this embodiment, the dual fuel control system piping is equipped with a one-way check valve that cuts off the high pressure that suddenly develops downstream and allows the fuel to flow back into the piping upstream to ensure the safety of the system for fuel and unit operation.

In this embodiment, the two-component fuel supply control system is equipped with a water bath heating device used for gaseous fuel, which prevents the rapid decrease in the temperature of the fuel caused by a decrease in pressure, ensures that the dew point temperature of the fuel is reached, causes icing of the pipeline and valves, and thereby ensures stability operation of the fuel system.

In this embodiment, the dual fuel supply control system is provided with 8 flow lines (the 8 flow lines are respectively a flammable liquid line; a 1st branch line of a gaseous fuel line and a 2nd branch line of a gaseous fuel line of the gaseous fuel supply system; a line a flammable liquid purge and an auxiliary atomization air purge line of the flammable liquid purge system; a 1st branch line for purge the fuel gas line and a 2nd branch line for purge the fuel gas line of the gaseous fuel purge system; ), which can be optionally equipped with flow sensors to effectively monitor the actual flow rate of the medium, facilitating the adjustment of the appropriate degree of opening of the control valve, thereby ensuring stable operation of the gas turbine generator unit.

In this embodiment, the flammable liquid, without limitation, includes light diesel fuel, and the gaseous fuel, without limitation, includes natural gas.

Specific Embodiment 15: This embodiment is described with reference to FIG. 1; According to this embodiment, the flammable liquid supply system A includes a flammable liquid source A1, a flammable liquid line A0, a pump A2, a first filter device A3, a first control valve A4, a first shut-off valve A5, a first flow sensor A6, a relief valve A7, and a first check valve. A8; flammable liquid pipeline A0 is connected at one end to flammable liquid source A1; the flammable liquid pipe A0 is connected at the other end, after being connected in series with the pump A2, the first filter device A3, the first control valve A4, the first shut-off valve A5, the first flow sensor A6 and the first check valve A8, to the flammable liquid ring pipe 1-9H; the relief valve A7 is connected in parallel to the flammable liquid line A0 between the first flow sensor A6 and the first check valve A8. This arrangement facilitates the supply of flammable liquid and also facilitates switching between flammable liquid and gaseous fuel. Other components and connection methods are the same as in any of the specific embodiments 1-14.

Specific Embodiment 16: This embodiment is described with reference to FIG. 1; According to this embodiment, the gaseous fuel supply system B comprises a gaseous fuel source B1, a gaseous fuel line B0, a water bath heating device B2, a second filter device B3, a second shut-off valve B5, a bleed valve B7, a second control valve B4-1, a third control valve B4-2, third shut-off valve B5-1, fourth shut-off valve B5-2, second flow sensor B6-1, third flow sensor B6-2, second check valve B8-1 and third check valve B8-2;

gaseous fuel line B0 is connected at one end to gaseous fuel source B1; Fuel gas line B0 at the other end connects in series the water bath heating device B2, the second filter device B3 and the second shut-off valve B5, and then divides into 1st branch line B0-1 of gaseous fuel and 2nd branch line B0-2 of gaseous fuel ; The 1st fuel gas branch line B0-1 connects the second control valve B4-1, the third shut-off valve B5-1, the second flow sensor B6-1 and the second check valve B8-1 in series, followed by connection with the first line ring pipe 2-1H gaseous fuel; The 2nd fuel gas branch line B0-2 connects in series the third control valve B4-2, the fourth shut-off valve B5-2, the third flow sensor B6-2 and the third check valve B8-2, followed by connection with the second line ring pipe 3-1H gaseous fuel. This facilitates the supply of gaseous fuel while also facilitating switching between the flammable liquid and the gaseous fuel. Other components and connection methods are the same as in any of the specific embodiments 1-15.

Specific Embodiment 17: This embodiment is described with reference to FIG. 1; according to this embodiment, the auxiliary atomization air supply system E includes a compressed air source E1, an auxiliary atomization air line E0, a throttle washer E2, a fifth shut-off valve E5, an eighth flow sensor E6, and an eighth check valve E8;

the atomizing air auxiliary line E0 is connected at one end to the compressed air source E1; The atomizing air auxiliary line E0 is connected at the other end in series with the throttle washer E2, the fifth shut-off valve E5, the eighth flow sensor E6, and the eighth check valve E8, followed by connection with the atomizing air auxiliary ring pipe 4-1H. This arrangement helps ensure atomization of the flammable liquid and provides a combustion effect. Other components and connection methods are the same as in any of the specific embodiments 1-16.

Specific Embodiment 18: This embodiment is described with reference to FIG. 1; According to this embodiment, the combustible liquid purge system C comprises a combustion chamber air purge line CD0, a combustible liquid purge line C0-1, an atomization air purge line C0-2, a fourth control valve C4-1, a fifth control valve C4-2, a fourth sensor C6-1 flow rate sensor, fifth flow sensor C6-2, fourth check valve C8-1 and fifth check valve C8-2;

The flammable liquid purging line C0-1 and the atomizing air purging line C0-2 are connected in parallel and share the combustion chamber air exhaust line CD0; flammable liquid purge line C0-1 connects in series with the fourth control valve C4-1, the fourth flow sensor C6-1 and the fourth check valve C8-1, followed by connection with the flammable liquid pipeline A0; The atomizing air purge line C0-2 connects in series the fifth control valve C4-2, the fifth flow sensor C6-2, and the fifth check valve C8-2, followed by a connection to the atomizing air auxiliary line E0. This arrangement facilitates the purging of flammable liquid when using gaseous fuel and prevents the formation of soot. Other components and connection methods are the same as in specific embodiments 1-17.

Specific Embodiment 19: This embodiment is described with reference to FIG. 1; According to this embodiment, the fuel gas purge system D comprises a 1st fuel gas flow line purge branch line D0-1, a 2nd fuel gas flow line purge branch line D0-2, a sixth control valve D4-1, a seventh control valve D4- 2, sixth flow sensor D6-1, seventh flow sensor D6-2, sixth check valve D8-1 and seventh check valve D8-2;

The 1st fuel gas flow line purge branch line D0-1 and the 2nd fuel gas flow line purge branch line D0-2 are connected in parallel and share the combustion chamber air discharge line CD0; The 1st fuel gas flow line purging branch line D0-1 sequentially connects the sixth control valve D4-1, the sixth flow sensor D6-1 and the sixth check valve D8-1, followed by connection with the 1st fuel gas branch line B0-1; The 2nd fuel gas flow line purging branch line D0-2 connects the seventh control valve D4-2, the seventh flow sensor D6-2 and the seventh check valve D8-2 in series with the subsequent connection to the 2nd fuel gas flow line branch line B0-2. This arrangement facilitates purging of the gas line when switching between fuels. Other components and connection methods are the same as in any of the specific embodiments 1-18.

With reference to FIG. 1-6 describe the operating principle of the present invention.

As shown in FIG. 1, the main part of the gas turbine consists of a compressor 7, a combustion chamber 8, a low emission dual fuel supply control system and a turbine wheel 9, and together with the generator 10 driven by it to generate electricity, forms a gas turbine generator unit. In the area of the head part of the combustion chamber 8, ring tubes are installed that facilitate the distribution of fuel; for example, shown in the partially enlarged image G, the low emission nozzle ring tube system F, in particular, includes a flammable liquid ring tube 1-9H, an auxiliary ring tube 4-1H for atomizing air, a 1st line ring tube 2-1H for gaseous fuel and ring tube 3-1H of the 2nd line for gaseous fuel, which are connected by means of outlet pipes, respectively, to the corresponding inlet pipe 1-9 of the line for flammable liquid, auxiliary inlet pipe 4-1 for atomization air, inlet pipe 2-1 I th line for gaseous fuel and inlet pipe 3-1 of the IInd line for gaseous fuel nozzle 11 with low emissions (area G in the figure).

The flammable liquid supply system A is connected through the flammable liquid flow line A0 to the flammable liquid annular tube 1-9H, with the connection point located at the lower half-ring of the annular tube; The fuel gas supply system B, through the fuel gas flow line B0, is divided into the 1st fuel gas flow line branch B0-1 and the 2nd fuel gas flow line branch B0-2, respectively connected to the 1st gas line ring pipe 2-1H. fuel gas and the ring pipe 3-1H of the 2nd gaseous fuel line, where the two branch lines share fuel gas source B1, water bath heating device B2, filter device B3, shut-off valve B5 and bleed valve B7 and at the same time independently equipped with a control valve, a shut-off valve, a flow meter and a check valve; The auxiliary atomizing air supply system E, through the auxiliary atomizing air flow line E0, is connected to the auxiliary atomizing air ring pipe 4-1H, and mainly helps to break the flammable liquid into droplets, which enhances combustion and improves efficiency; The flammable liquid purge system C is divided into two flow lines, namely the flammable liquid purge line C0-1 and the atomizing air purge line C0-2, which are respectively connected downstream to check valves A8 and E8 on the flammable liquid flow line A0 and line E0 flow of auxiliary atomizing air, purging the flammable liquid line annular tube and the inner channel of the low emission nozzle in non-operating mode to clean to prevent the formation of carbon deposits and promote atomization; Fuel gas purge system D is similarly divided into two flow lines, namely 1st branch gaseous gaseous flow line purge line D0-1 and 2nd branch gaseous gaseous flow line purge line D0-2, for purging the annular fuel gas flow line. and the internal passage of the low emission nozzles for the purpose of cleaning when they are not in operation, while preventing flashback and self-ignition. In addition, the flammable liquid supply system A, the fuel gas supply system B, and the auxiliary atomizing air supply system E are provided with separate media sources, namely, the flammable liquid source A1, the fuel gas source B1, and the compressed air source E1, and purge air in system C purge of flammable liquid and purge system D, gaseous fuel comes from high-pressure air from the annular cavity 8A of combustion chamber B and through line CD0, the air flow from the combustion chamber is supplied to purge systems C and D, while in the combustion chamber the air release point is located at surface of the outer wall of the combustion chamber box. The present invention uses separate block structures for the 5 systems, which can be detached individually for ease of transportation and installation, and are especially suitable for sites with limited space, such as offshore platforms and the like.

As shown in FIG. 1, in region G of the figure, the combustion chamber 8 for the low emission dual fuel is composed of an outer combustion chamber casing 8-1, an inner combustion chamber casing 8-2, a front force-receiving casing 8-4, a rear support casing 8-5, low emission nozzles 11 for low emission two-component fuel, flame tube 8-3, diffuser 8-6 and fixing devices 8-7. In this case, the low emission nozzle 11 for two-component low emission fuel is passed through the mounting hole in the front part of the annular conical surface 8-4 of the front force-receiving casing, inserted into the socket in the head part of the flame tube 8-3 and secured and sealed by means of the nozzle mounting flange with low emissions; the flame tube 8-3 is a cylindrical structure, which in the middle part of the cylinder is equipped with a flame transfer tube, main combustion holes 8-3A and gas film cooling holes, while the main combustion holes, on the one hand, provide replenishment of air mixed with fuel, they reduce the temperature in the main combustion zone and increase the effect of reducing emissions, and on the other hand, they regulate the uniformity of temperature distribution in the area of the combustion chamber exit and extend the total overhaul life of the unit; The head part of the flame tube 8-3 is provided with an installation hole for inserting the low emission nozzle, and its tail part is provided with a mounting base, and it is secured by connecting the head part with the fixing devices 8-7 at two places and the three-point support of the mounting base at one place. tail section and provides a stable, highly efficient working space for high temperature flames; the combustion chamber outer casing 8-1 is connected, respectively, to the front force-receiving casing 8-4 and the rear support casing 8-5 by means of annular flanges at the front and rear parts to ensure tightness; The internal casing 8-2 of the combustion chamber is connected by means of an annular flange on the front part to the front force-receiving casing 8-4 and, together with the outer casing 8-1 of the combustion chamber, forms a volumetric annular working space 8A, that is, an annular cavity for circulating air with high temperature and under high pressure; a diffuser 8-6 is attached to the rear portion of the combustion chamber inner casing 8-2 and is designed to provide a passage for incoming high-temperature, high-pressure air from the combustion chamber; The combustion chamber rear support casing 8-5 is designed to ensure the installation of the flame tube mounting base and the combustion chamber high temperature outlet 8-5A so that the hot gas collides with the turbine wheel blades 9.

When the combustion chamber is operated, the high temperature and high pressure air discharged from the compressor 7 flows from the combustion chamber inlet 8-6A into the diffuser 8-6 with retardation and diffusion, and then passes into the combustion chamber annular cavity 8A; then the air is distributed in the first-level air swirler, the second-level air swirler, the main combustion holes and the gas film cooling holes of the flame tube 8-3, etc. in the low emission nozzle 11 for the two-component low emission fuel, but is first mixed with a flammable liquid or gaseous fuel to form a flammable mixture; after highly efficient stable combustion in the flame tube 8-3, air is formed for afterburning the fuel, which further reduces emissions, and cooling air that prevents the temperature resistance limit of the material of the flame tube 8-3 from being exceeded; the resulting hot gas is released through the combustion chamber outlet 8-5A and drives the turbine wheel 9 to produce power output and subsequently generate electricity.

When gaseous fuel operation is used in the combustion chamber 8, a homogeneous mixture formed from gaseous fuel and air is obtained using the two-stage lean-burn combustion method and pre-mixing, and the ratio of the amount of air from the first-level air swirler to the second-level air swirler is 1: 7, is consistent with the fuel supplied at the inlet of the 1st gaseous fuel line and the 2nd gaseous fuel line, adjusting the overall equivalent ratio of the two-level combustion region in the low emission region of 2.5-4.5, and ensuring that the temperature of the combustion region is in low emission combustion temperature control ranges from 1700°C to 1900°C, resulting in simultaneous control of NOx emissions in the low emission range while achieving highly efficient combustion chamber stabilization.

As shown in FIG. 2, the flammable liquid swirler 1-1 is installed by insertion in the internal cavity of the atomization air swirler 1-2 and, together with the surface of its inner wall, forms a channel for the flammable liquid; The threaded plug 1-4 is secured to the atomization air swirler 1-2 by means of a threaded connection and, by applying pressure, presses and fixes the flammable liquid swirler 1-1 to ensure good tightness and alignment of the installation. In this case, the atomization air swirler 1-2 is similarly installed by insertion in the inner cavity of the cap 1-3 and is inserted and installed in the housing 5-1. The rotary plug 1-14 is fixed in the housing 5-1 by means of a threaded connection and rotates with the application of a nominal torque, ensuring pressure from the circular ring 1-15 and the sealing ring 1-16 on the sealing cover 1-17 to ensure a seal between the housing 5- 1 and rotary plug 1-14 and fixing the swirler 1-2 atomizing air.

(1) For liquid fuel operation: pump A2 increases the pressure of the flammable liquid in the flammable liquid source A1, filters to remove impurities through the first filter device A3, passes through the first control valve A4 with a suitable opening degree and the first shut-off valve A5 is fully open ; under the measurement conditions, the first flow sensor A6 moves the flammable liquid into the flammable liquid annular tube 1-9H; and finally, by means of outlet tubes, it is supplied to the inlet of the low emission nozzle 11; During this process, the relief valve A7 remains closed (Fig. 1). The flammable liquid, through the inlet pipe 1-9 of the line for flammable liquid, is filtered in the filtration unit 1-12 for flammable liquid with introduction into the heat-insulating tube 1-13 for flammable liquid, then through the channel formed by the sealing cap 1-17 and the threaded plug 1- 4, passes into the swirler 1-1 of the flammable liquid to produce a vortex flow and, finally, through the nozzle holes for the flammable liquid in the internal cavity of the swirler 1-2, the atomization air is ejected and forms a spray cone, while it enters the combustion space and mixes with the compressed air to ensure combustion. During this process, the fuel gas purging system D is open to flow; the sixth control valve D4-1 and the seventh control valve D4-2 are characterized by a suitable opening degree for controlling the amount of purge air (FIG. 1); inlet pipe 2-1 of the I line for gaseous fuel (namely, the first inlet pipe 2-1 for gaseous fuel) and inlet pipe 3-1 of the II line for gaseous fuel (namely, the second inlet pipe 3-1 for gaseous fuel ) supplies compressed air to purge and cool the fuel gas passage, and prevents hot gas from flowing backward during low-emission nozzle operation. Based on the different operating conditions of the gas turbine, the atomizing air auxiliary line will have two different operating conditions.

(2) When operating in low-intensity liquid fuel mode: when the gas turbine uses flammable liquid and operates in the ignition mode and idling mode, the atomizing auxiliary air from the air compressor, that is, the part of the air in the compressed air source E1, is controlled by the throttle washer E2 to a suitable flow rate; When the fifth shut-off valve E5 is fully open, it passes through the eighth flow sensor E6 and the eighth check valve E8 into the auxiliary atomization air ring tube 4-1H and outlet tubes, and finally enters the atomization air passage of the low emission nozzle. That is, active supply occurs through the atomization air inlet pipe 4-1, and the atomization air connector is sealedly connected by means of the atomization air connecting nut 4-2 and the atomization air connecting conical surface 4-3 and inserted into the auxiliary atomization air channel 1-5. ; then the air passes through the swirl flow channel space and the swirl flow groove formed by the low emission nozzle body 5-1, the atomizing air swirler 1-2 and the cap 1-3 to produce swirl flow, and finally passes through the nozzle holes for atomization air, formed by the swirler 1-2 of the atomization air and the cap 1-3, swirls in jets and comes out, while the liquid film of the flammable liquid atomization cone breaks into droplets with an accompanying shear during torsion, which achieves a good atomization effect and solves the problem of poor quality spraying of flammable liquid when the gas turbine is operating in idle and ignition modes.

(3) When operating in high-intensity operating mode using liquid fuel: when the gas turbine uses liquid fuel and operates in the above idle mode, the auxiliary atomization air supply system E at this time enters the idle mode, the shut-off valve E5 is closed, and the supply is stopped external auxiliary air atomization; The atomizing air supply from the atomizing air annular tube 4-1H, the outlet tubes and the atomizing air passage of the low emission nozzle is adjusted to the atomizing air purge supply from the atomizing air purge line C0-2 of the atomizing air purge system C, with control valve C4-2 opening to suitable degree of opening. That is, the auxiliary pneumatic atomization air source supplies compressed air into the annular cavity space formed in the gas turbine by the outer casing of the combustion chamber and the flame tube of the combustion chamber, and the air compressor may stop working, and the auxiliary atomization is carried out only by using high-pressure air compressed and supplied rotation of the gas turbine compressor.

(4) When operating in low-intensity gaseous fuel mode: when the gas turbine uses gaseous fuel and operates in the ignition mode and idling mode, the gaseous fuel supply system B is in the operating mode, the gaseous fuel from the gaseous fuel source B1 flows through the fully open third shut-off valve B5-1 and the second filter device B3, which performs filtration to remove impurities, then passes through the water bath heating device B2 with heating to raise the temperature, and then enters the 1st fuel gas branch line B0-1, while the third control valve B4-2 and fourth shut-off valve B5-2 of the 2nd branch line in the fuel gas flow line remain completely closed; the fuel passes through the second control valve B4-1 with a suitable opening degree and the fourth shut-off valve B5-2 fully open; under the measurement condition by the flow sensor B6-2, the fuel gas is moved into the annular tube 2-1H and finally supplied to the inlet of the low emission nozzle 11 through the outlet tubes; During this process, drain valve B7 remains closed. Gaseous fuel is supplied from the inlet pipe 2-1 of the I line for gaseous fuel (Fig. 1), while the connector of the I line for gaseous fuel is hermetically connected by means of a connecting nut 2-2 of the I line for gaseous fuel and a connecting conical tubes 2-3 of the first line for gaseous fuel; gaseous fuel is moved through the holes in the low-emission nozzle body 5-1 into the fuel channel formed by the low-emission nozzle body 5-1 and the arc-shaped bracket 2-4, followed by ejection through the small fuel holes in the air swirler 2-5 first line, and after mixing with air, it is introduced into the combustion space to burn the pre-prepared mixture of fuel and air, which effectively reduces the emission of pollutants. During this process, the 2nd branch purge line D0-2 of the fuel gas purge flow line of the fuel gas purge system D is open to flow, and the third control valve B4-2 has a suitable opening degree to control the amount of purge air entering the ring tube 3-1H of the 2nd line of gaseous fuel (Fig. 1), which is additionally introduced into the inlet pipe 3-1 of the IInd line for the gaseous fuel nozzle 11 with low emissions. Similarly, the flammable liquid purging system C is in the purge operating mode, while compressed air is supplied through the atomization air inlet pipe 4-1 and the flammable liquid line inlet pipe 1-9 into the annular cavity space formed in the gas turbine by the outer casing of the combustion chamber and flame tube of the combustion chamber, with cooling by purging all channels, and preventing the movement of hot gas in the opposite direction when the nozzle is operating with low emissions. Alternatively, the flammable liquid purge line C0-1 and the atomizing air purge line C0-2 comprise a fourth control valve C4-1 and a fifth control valve C4-2 for controlling the flow rate, and a fourth flow sensor C6-1 and a fifth sensor C6-2 flow rate, measuring the actual flow rate during purging. At the same time, the eighth check valve E8 and the first check valve A8 can prevent purge air from flowing back into the auxiliary atomizing air supply system E and the flammable liquid supply system A, which causes damage to the equipment.

(5) When operating in high-intensity operating mode using gaseous fuel: when the gas turbine uses gaseous fuel and operates in the above idle mode, the gaseous fuel is supplied in a relatively large amount; When the idle point is reached, the annular tube of the 2nd line of gaseous fuel is transferred from the purge mode to the fuel supply mode, that is, the seventh control valve D4-2 is transferred from the open state to the closed state, while the seventh control valve D4-2 is adjusted to a suitable degree discoveries; the fourth shut-off valve B5-2 is set to the fully open position; two branch lines of gaseous fuel supply system B are in fuel supply operating mode; Specifically, the fuel gas from the fuel gas source B1 passes through the fully open second shut-off valve B5 and the second filter device B3 for filtering to remove impurities, then passes through the water bath heating device B2 with heating to raise the temperature, and then enters the 1st branch line B0-1 of the fuel gas flow line, and the gaseous fuel is supplied to the 2nd branch line B0-2 of the gaseous fuel flow line; fuel passes through the control valve with a suitable degree of opening and a fully open shut-off valve; under the measurement conditions, by each flow sensor, the fuel gas is moved into the first fuel gas line annular tube 2-1H and the second fuel gas line annular tube 3-1H, and finally supplied to the inlet of the low emission nozzle 11 through the outlet tubes; During this process, drain valve B7 remains closed. When the operating condition continues to increase, this is done by adjusting the opening degree of the second control valve B4-1 and the third control valve B4-2. In this case, gaseous fuel is simultaneously supplied from the inlet pipe 2-1 of the I line for gaseous fuel and the inlet pipe 3-1 of the I line for gaseous fuel (Fig. 1); In addition to the 1st line for gaseous fuel, the connector of the 2nd line for gaseous fuel is hermetically connected by means of a connecting nut 3-2 of the 2nd line for gaseous fuel and a connecting conical tube 3-3 of the 2nd line for gaseous fuel, and gaseous fuel through the holes in the housing 5-1 and the air swirler 2-5 of the first line, it is moved into the fuel channel formed by the swirler 2-9 of the second line and the lining 3-4, followed by insertion into the small holes for fuel in the swirler 2- 9 II line and ejection, and after mixing with air, it is introduced into the combustion space, while together with the I line for gaseous fuel, combustion of a pre-prepared mixture of fuel and air is ensured. During this process, the operating mode is the same as that of the gas turbine using gaseous fuel in low-intensity mode, while the flammable liquid purging system C is in the purge operating mode, atomization air inlet 4-1 and atomization air inlet 1- 9, the flammable liquid lines supply compressed air into the annular cavity space formed in the gas turbine by the outer casing of the combustion chamber and the flame tube of the combustion chamber, to carry out cooling by blowing through all the channels, and prevent the hot gas from moving in the opposite direction when the nozzle is operated with low emissions.

(6) In the process of switching from gaseous fuel to flammable liquid in a certain operating mode, the following steps are performed as an alternative:

Before switching starts, the fuel gas supply system B remains in the operating mode, that is, the fuel gas from the 1st gaseous fuel branch line B0-1 and the 2nd gaseous fuel branch line B0-2 is supplied to the ring tube 2-1H of the first gaseous fuel line fuel and an annular tube of the 2nd line of gaseous fuel and is introduced into the nozzle 11 with low emissions for gaseous fuel to ensure combustion; The combustible liquid purging system C remains in operation, that is, the air discharged from the combustion chamber 8 passes through the flow line CD0 and is introduced into the flammable liquid purging line C0-1 and the atomizing air purging line C0-2, with corresponding introduction into the annular tube 1 -9H for flammable liquid and 4-1H auxiliary atomizing air ring tube to effectively purge the flammable liquid passage and auxiliary atomizing air passage of the low emission nozzle 11 to prevent carbon deposits; The flammable liquid supply system A, the fuel gas purging system D and the auxiliary atomizing air supply system E are not put into operation, and through each of the first check valve A8, the sixth check valve D8-1, the seventh check valve D8-2 and the eighth check valve E8 the backflow of the purge air discharged from the combustion chamber 8 and the fuel gas is effectively prevented, thereby preventing damage to the gas turbine caused by the backflow of the fuel;

2. At the time of switching start, based on the mode in step 1, the flammable liquid purge line C0-1 of the flammable liquid purge system C stops operating, that is, the fourth control valve C4-1 is turned to the closed position; The flammable liquid supply system A starts to operate, the pump A2 starts, the first shut-off valve A5 opens, the first control valve A4 is adjusted to the smallest valve opening degree, in the flammable liquid ring pipe 1-9H, the exhaust air as a working medium from the combustion chamber 8 changes to a flammable liquid with a suitable flow rate Gl supplied from the flammable liquid flow line A0, which is finally introduced into the flammable liquid passage of the low emission nozzle 11; the air discharged from the combustion chamber 8, under conditions of auxiliary atomization with air for purging, is introduced into the combustion chamber and participates in combustion, which at the same time ensures that the power of the gas turbine generator unit fluctuates within 5%; the opening degree of the second control valve B4-1 and the third control valve B4-2 of the fuel gas supply system is reduced to a certain opening degree to reduce the amount of fuel gas Gg corresponding to the calorific value Gl; During the process of switching between fuels, the opening degree of the first shut-off valve A5 gradually increases, and the opening degree of the third shut-off valve B5-1 and the fourth shut-off valve B5-2 gradually decreases, while during this process the power of the gas turbine generator unit fluctuates within 5%; when a certain point is reached, the second control valve B4-1 and the third control valve B4-2 are completely closed, while the third shut-off valve B5-1 and the fourth shut-off valve B5-2 are also simultaneously moved to the closed position, thereby effectively stopping the supply of gaseous fuel; the opening degree of the first shut-off valve A5 is adjusted to some suitable opening degree, and the fuel switching is completed; When maintaining this operating mode of the gas turbine generator unit, there is a continuous power output, and the generator 10 is constantly in a stable operating mode.

After the switching is completed based on step 2, the flammable liquid supply system A remains in the operating mode; gaseous fuel supply system B is switched off; the second shut-off valve B5, the third shut-off valve B5-1 and the fourth shut-off valve B5-2 remain closed; The fuel gas purging system D starts to operate, that is, the sixth control valve D4-1 and the seventh control valve D4-2 are opened to a suitable opening degree, and exhaust air from the combustion chamber 8 is drawn respectively into the 1st fuel gas line ring tube 2-1H and a ring tube of the 2nd gaseous fuel line for purging and cleaning the two channels for the gaseous fuel nozzle 11 with low emissions to prevent the formation of carbon deposits and flashback, while in the gaseous fuel supply system B, the second check valve B8-1 and the third check valve B8 -2 The 1st branch line of the fuel gas flow line and the 2nd branch line of the gaseous fuel flow line can effectively prevent purge air from flowing back into the fuel gas supply system B and causing a flammable mixture that affects the reuse of the fuel gas. In addition, as an alternative, the discharge valve B7 of the fuel gas supply system B is opened, and the remaining fuel gas in the fuel gas flow line is safely discharged through the discharge member to prevent the formation of a flammable mixture, which ensures the safety of the unit; after release, bleed valve B7 closes to restore the system to an unloaded reserve state.

(7) In the process of switching from flammable liquid to gaseous fuel in a certain operating mode, the following steps are performed as an alternative:

1. Before switching starts, the flammable liquid supply system A remains in the operating mode, that is, the flammable liquid from the flammable liquid source A1 is supplied to the flammable liquid ring pipe 1-9H through the flammable liquid flow line A0, and is then introduced into the flammable liquid channel 11 low emission liquid nozzles with ejection, atomization and combustion; gaseous fuel supply system B is switched off; The fuel gas purge system D is in operation mode, that is, the sixth control valve D4-1 and the seventh control valve D4-2 are opened to a suitable opening degree, and air is discharged from the combustion chamber 8 through the 1st branch line purge line D0-1 fuel gas flow line and the 2nd branch line D0-2 of purging the fuel gas flow line is drawn respectively into the ring tube 2-1H of the first gaseous fuel line and the ring tube of the 2nd gaseous fuel line to purge and clean the two channels for the gaseous fuel nozzle 11 with low emissions while preventing the formation of soot and flashback, while in the fuel gas supply system B, the second check valve B8-1 and the third check valve B8-2 of the 1st branch line of the gaseous fuel flow line and the 2nd branch line of the gaseous fuel flow line can effectively prevent the purge air from flowing back into the gaseous fuel supply system B and causing a flammable mixture that affects repeated operation of the gaseous fuel. The combustible liquid purge system C remains in half operating mode, that is, the flammable liquid purge line C0-1 is turned off, but the auxiliary atomization air flow line C0-2 is turned on, and the exhaust air from the combustion chamber 8 via flow line CD0 is introduced into line C0-2 purging with atomizing air, followed by introducing into the auxiliary atomizing air ring tube 4-1H, and finally effectively purging the auxiliary atomizing air passage of the low emission nozzle 11; after leaving the channel with ejection, the auxiliary flammable liquid is sprayed highly efficiently, which enhances combustion and increases combustion efficiency; The auxiliary atomizing air supply system E is not put into operation, and through the check valve E8, the exhaust air from the purge combustion chamber 8 is effectively prevented from flowing backwards, which prevents equipment damage caused by the flow of the purge air back into the auxiliary atomizing air supply system;

2. At the time of switching start, based on the mode in step 1, in the fuel gas purge system D, the 1st branch fuel gas flow line purge line D0-1 and the 2nd branch gas fuel gas flow line purge line D0-2 stop operating, that is, the sixth control valve D4-1 and the seventh control valve D4-2 are moved to the closed position, the purge stops, and preparations for switching take place. In addition, on the fuel gas flow line B0, a second shut-off valve B5 is opened; The water bath heating device B2 begins to heat the fuel gas supplied from the fuel gas source B1, which prevents the decomposition of hydrocarbons in the fuel gas caused by the fuel gas being too low. In the 1st branch fuel gas line B0-1, the second control valve B4-1 is opened to the smallest opening degree, the third shut-off valve B5- is set to open, and the fuel gas along the flow line is supplied to the 1st line ring pipe 2-1H gaseous fuel to regulate the flow of gaseous fuel to Gg, then it is additionally introduced into the gaseous fuel channel 1 in the low emission nozzle 11 and participates in combustion, at the same time, on the flammable liquid flow line A0, the opening degree of the first control valve A4 is reduced, which reduces the flow flammable liquid on Gl, and the calorific value of Gl and Gg is the same, while stabilizing the power of the gas turbine generator unit within 5%. During the switching process, when the opening degree of the second control valve B4-1 is adjusted to a certain opening degree, the opening degree remains unchanged, the fourth shut-off valve B5-2 is opened, the opening degree of the third control valve B4-2 is adjusted to the smallest opening degree, at the same time time in the flammable liquid supply system A, the opening degree of the first control valve A4 continues to decrease until it closes, the gaseous fuel supply system B completely enters the stable operating mode, and the switching between fuels is completed; During this process, the operating mode of the gas turbine generator unit remains stable, there is a continuous power output, and the generator 10 is constantly in a stable operating mode.

After the switching is completed, based on step 2, the flammable liquid supply system A has already stopped working, that is, the pump A2, the first control valve A4 and the first shut-off valve A5 remain off, the flammable gas supply system B is turned on and is in a stable operating state; The combustible liquid purging system C starts to operate, that is, the fourth control valve C4-1 is opened to a suitable opening degree, the exhaust air from the combustion chamber 8 is drawn accordingly into the flammable liquid annular pipe 1-9H to purge and clean the flammable liquid passage of the nozzle 11 with low emissions while preventing the formation of soot, while in flammable liquid supply system A, check valve A8 on flammable liquid flow line A0 can effectively prevent purge air from flowing back into flammable liquid supply system A and causing a flammable mixture that affects the reuse of flammable liquid . Moreover, as an alternative, in the flammable liquid supply system A, the relief valve A7 is opened and the remaining flammable liquid in the flammable liquid flow line is discharged by the drain member, and after ensuring the safety of the unit, the valve is closed to restore the unloaded reserve state of the system.

To prevent high temperature carbon formation, the low emission nozzle for two-component fuel is equipped with 3 air cooling channels to prevent carbon formation, and the specific design is as follows:

to reduce the temperature of the cap 1-3 and prevent the formation of carbon deposits, when operating a low-emission nozzle for two-component fuel, the outer casing 2-10 of the swirler is equipped with many holes; The unburnt compressed air leaving the annular cavity between the outer casing of the combustion chamber and the flame tube, through the cold purge holes 6-1 to prevent the formation of carbon deposits, passes through the first path into the low emission nozzle, enters the cooling channel inside the cap 1-3 and finally , through the nozzle holes 6-2 of cold blowing to prevent the formation of carbon deposits along the first path, is ejected into the combustion space with the formation of a heat-insulating protective gas film and a decrease in temperature, which prevents the formation of carbon deposits. In order to reduce the temperature of the first premix line clamp member 2-6 and prevent the formation of carbon deposits, when operating a low-emission nozzle for two-component fuel, the outer swirl casing 2-10 is provided with a plurality of holes; unburned compressed air leaving the annular cavity between the outer casing of the combustion chamber and the flame tube, through the cold blowing holes 6-3 to prevent the formation of carbon deposits, enters the low-emission nozzle along the second path, passes through the internal cooling channel formed by the outer casing 2-10 swirler, clamping element 2-6 of the first line for pre-mixing and the first cup-shaped element 2-7, due to the pressure drop through several rows of holes in the first cup-shaped element 2-7 provides pulsed cooling of the clamping element 2-6 of the first line for pre-mixing and, finally, through the first cold purge nozzle holes 6-4 to prevent the formation of carbon deposits along the second path and the second cold purge nozzle holes 6-5 to prevent the formation of carbon deposits along the second path, it is thrown into the combustion space with the formation of a heat-insulating protective gas film and a decrease in temperature, which prevents soot formation. In order to reduce the temperature of the second premix line clamp member 3-6 and prevent the formation of carbon deposits, when operating the low-emission dual fuel nozzle, the rim 3-5 is provided with a plurality of holes; unburnt compressed air leaving the annular cavity between the outer casing of the combustion chamber and the flame tube, through the cold blowing holes 6-6 to prevent the formation of carbon deposits by cooling along the third path, enters the nozzle with low emissions, passes through the internal cooling channel formed by the outer casing 2- 10 of the swirler, the rim 3-5 and the clamping element 3-6 of the second line for pre-mixing, and finally, through many small holes in the clamping element 3-6 of the second line for pre-mixing, it is discharged into the combustion space to form a heat-insulating protective gas film and a decrease in temperature, which prevents the formation of soot.

Only preferred embodiments of the present invention have been described above, but the present invention is not limited to the specific embodiments presented above, and all changes or equivalent replacements that without departing from the basic idea of the invention are proposed by those skilled in the art, inspired by the present invention, with respect to the features and embodiments of the present invention, in order to ensure compliance with specific situations, will not deviate from the essence and scope of protection of the present invention as defined by the claims.

Claims (49)

1. A low emission nozzle, characterized in that it comprises a first flammable gas line, a second combustible gas line, an atomizing air line, a flammable liquid line, a purge air line, and a nozzle body; the first combustible gas line, the second flammable gas line, the atomizing air line, and the flammable liquid line are connected to the main part of the nozzle, providing the flammable gas inside, the gas outside, and the fuel line crossing with the gas line, wherein the atomizing air line, the first line for flammable gas and the line for flammable liquid ensure the entry of the unit into idle mode and share the air swirler (2-5) of the first line for flammable gas; the line for atomizing air, the second line for flammable gas and the line for flammable liquid ensure that the unit enters the operating mode and share the air swirler (2-9) of the second line for flammable gas; The purge air line is connected to the fuel ejection side of the main part of the nozzle, and the purge air line uses pulsed convection cooling, gas film cooling and adiabatic cooling to prevent the formation of carbon deposits in the nozzle hole area. 2. The low emission nozzle according to claim 1, characterized in that the main part comprises a low emission nozzle body (5-1) and a combustion chamber cover plate (5-2); The combustion chamber cover plate (5-2) is mounted on the fuel inlet port of the low emission nozzle body (5-1). 3. Low-emission nozzle according to claim 2, characterized in that the line for flammable liquid contains a swirler (1-1) of flammable liquid, a threaded plug (1-4), a sealing cap (1-17), a sealing unit, a rotary plug (1-14), flammable liquid heat insulation tube (1-13), flammable liquid line inlet pipe (1-9), flammable liquid line connecting cap (1-10), conical line connecting pipe (1-11) for flammable liquid and filtration unit (1-12) for flammable liquid; the connecting conical tube (1-11) of the flammable liquid line is fixed in the covering plate (5-2) of the combustion chamber; the filtration unit (1-12) for flammable liquid is installed in the connecting conical tube (1-11) of the line for flammable liquid; the inlet pipe (1-9) of the flammable liquid line is installed on the connecting conical tube (1-11) of the flammable liquid line by means of a connecting cap (1-10) of the flammable liquid line; the swirler (1-1) of the flammable liquid and the threaded plug (1-4) are installed on the same centerline in the body (5-1) of the low-emission nozzle; The sealing cap (1-17) tightly closes the screw plug (1-4) through the sealing unit; the rotary plug (1-14) is screwed onto the sealing cap (1-17) and the heat-insulating tube (1-13) for the flammable liquid with two ends is made in communication, respectively, with the swirler (1-1) of the flammable liquid and the connecting conical tube (1-11 ) lines for flammable liquids. 4. The low emission nozzle according to claim 3, characterized in that the sealing assembly comprises a circular ring (1-15), an O-ring (1-16) and a steel ring (1-18); the seal ring (1-16) is an annular seal ring; the sealing ring (1-16) in the upper part is equipped with a tapering stepped groove (1-16-1); the steel ring (1-18) is tightly inserted into the o-ring (1-16); the circular ring (1-15) on the side surface in the lower part is tapered and stepped; the circular ring (1-15) is inserted into the stepped groove (1-16-1) of the sealing ring (1-16) and the upper end surface of the circular ring (1-15) is located lower than the upper end surface of the sealing ring (1-16) . 5. Low emission nozzle according to any one of claims. 1, 2, 3 or 4, characterized in that the atomization air line contains an atomization air swirler (1-2), a cap (1-3), an auxiliary inlet pipe (1-6) of the atomization air line, an auxiliary connecting cap ( 1-7) atomization air lines and auxiliary conical tube (1-8) atomization air lines; the swirler (1-2) of the atomizing air is put on the swirler (1-1) of the flammable liquid and the threaded plug (1-4); the cap (1-3) is put on the swirler (1-2) of the atomizing air and is located on one side of the swirler (1-1) of the flammable liquid; the auxiliary inlet pipe (1-6) of the atomization air line is installed on the cover plate (5-2) of the combustion chamber; The auxiliary inlet pipe (1-6) of the atomizing air line is connected to the auxiliary conical pipe (1-8) of the atomizing air line by means of the auxiliary connecting cap (1-7) of the atomizing air line; the lower part of the auxiliary conical tube (1-8) of the line for atomization air is made in communication with the swirler (1-2) of the atomization air through the auxiliary channel (1-5) for the atomization air. 6. The low emission nozzle according to claim 5, characterized in that the first combustible gas line comprises a first inlet pipe (2-1) for gaseous fuel, a first connecting cap (2-2) for gaseous fuel, a first connecting conical tube ( 2-3) for gaseous fuel, arc-shaped bracket (2-4), air swirler (2-5) of the first line, clamping element (2-6) of the first line for pre-mixing, first cup-shaped element (2-7) and second cup-shaped element (2-8); the first connecting conical tube (2-3) for gaseous fuel is installed on the cover plate (5-2) of the combustion chamber; the first inlet pipe (2-1) for gaseous fuel is mounted on the first connecting conical tube (2-3) for gaseous fuel by means of a first connecting cap (2-2) for gaseous fuel; an arcuate bracket (2-4) is installed on the end portion of the ejection side of the combustible body (5-1) of the low emission nozzle; the first line air swirler (2-5) is installed at the rear end of the arc-shaped bracket (2-4); the clamping element (2-6) of the first line for pre-mixing is located on the same centerline with the first line air swirler (2-5) and is inserted into the tail part of the first line air swirler (2-5); the first cup-shaped element (2-7) and the second cup-shaped element (2-8) enclose the clamping element (2-6) of the first pre-mixing line in the inside-out direction; The first connecting conical tube (2-3) for gaseous fuel with its lower part is made in communication with the first line air swirler (2-5) through the first gas line channel. 7. Low emission nozzle according to claim 6, characterized in that the second line for flammable gas contains a second line air swirler (2-9), a second line swirler housing (2-10), a second inlet pipe (3-1) for gaseous fuel, a second connecting cap (3-2) for gaseous fuel, a second connecting conical tube (3-3) for gaseous fuel, a cover (3-4), a rim (3-5) and a second clamping element (3-6) pre-mixing lines; the body (2-10) of the second line swirler is installed on the first line air swirler (2-5) by means of a lining (3-4); the air swirler (2-9) of the second line is installed on the body (2-10) of the second line swirler; the clamping element (3-6) of the second line for pre-mixing by means of the rim (3-5) is installed on the body (2-10) of the second line swirler; a second connecting conical tube (3-3) for gaseous fuel is installed on the cover plate (5-2) of the combustion chamber; the second inlet pipe (3-1) for gaseous fuel is connected to the second connecting conical tube (3-3) for gaseous fuel by means of a second connecting cap (3-2) for gaseous fuel; the second connecting conical tube (3-3) for gaseous fuel is made in communication with the air swirler (2-9) of the second line through the channel of the second gas line. 8. Low emission nozzle according to any one of claims. 1, 2, 3, 4, 6 or 7, characterized in that the line for purge air contains a gas line for pulsed convection cooling, a gas line for gas film cooling and a gas line for adiabatic cooling, wherein: in the gas line for pulsed convection cooling: the housing (2-10) of the second line swirler is equipped with a plurality of cold purge holes (6-3) to prevent the formation of carbon deposits along the second path, while external cold air through the many cold purge holes (6-3) to prevent the formation of carbon deposits along the second path it enters and passes into the internal cooling channel formed by the second line swirler, the clamping element (2-6) of the first line for pre-mixing and the first cup-shaped element (2-7) in the housing (2-10), and due to the difference in gas pressure through several rows of holes in the first cup-shaped element (2-7), it provides pulsed cooling of the clamping element (2-6) of the first line for pre-mixing; cold air from the external purge system through the first nozzle holes (6-4) of cold purge to prevent the formation of soot along the second path and the second nozzle holes (6-5) of cold purge to prevent the formation of soot along the second path is thrown into the combustion space with the formation of a thermal insulating protective gas film, and by using a method of combining pulsed convection cooling and gas film cooling, the temperature of the clamping element (2-6) of the first premixing line is reduced; in the gas line for gas film cooling: the air swirler (2-5) of the first line is equipped with many cold blowing holes (6-1) to prevent the formation of carbon deposits along the first path; cold air from the external purge system through a plurality of cold purge holes (6-1) to prevent the formation of carbon deposits along the first path enters, passes into the cooling channel inside the cap (1-3) and then through the cold purge nozzle holes (6-2) to preventing the formation of soot along the first path, it is ejected into the combustion space with the formation of a heat-insulating protective gas film and a decrease in the temperature of the cap (1-3); in the gas line for adiabatic cooling: the rim (3-5) is equipped with a plurality of cold purge holes (6-6) to prevent the formation of carbon deposits by cooling along the third path, while cold air from the external purge system through the plurality of cold purge holes (6-6) to prevent the formation of carbon deposits, cooling along the third path passes into the internal cooling channel formed by the body (2-10) of the second line swirler, the rim (3-5) and the clamping element (3-6) of the second line for pre-mixing, and then through a plurality of holes in the clamping element (3-6) of the second premixing line is released into the combustion space to form a heat-insulating protective gas film, reducing the temperature of the clamping element (3-6) of the second premixing line. 9. The low emission nozzle according to claim 8, characterized in that the first nozzle holes (6-4) are cold purge to prevent carbon formation along the second path and the second nozzle holes (6-5) are cold purge to prevent carbon formation along the second path made in annular rows in the clamping element (2-6) of the first line for pre-mixing. 10. The low emission nozzle according to claim 9, characterized in that the first cold purge nozzle holes (6-4) to prevent carbon deposits along the second path are oval nozzle holes and a plurality of first cold purge nozzle holes (6-4) to to prevent the formation of carbon deposits along the second path, they are located in a circular pattern with a clockwise inclination. 11. The low emission nozzle according to claim 10, characterized in that the second cold blow nozzle holes (6-5) to prevent carbon deposits along the second path are rectangular nozzle holes. 12. A combustion chamber for a two-component low-emission fuel, comprising an outer casing (8-1) of the combustion chamber, an inner casing (8-2) of the combustion chamber and a flame tube (8-3), characterized in that it additionally contains a front force-receiving casing (8-4), rear support casing (8-5), combustion chamber outlet (8-5A), diffuser (8-6), combustion chamber inlet (8-6A), fixing devices (8-7) and nozzle with low emissions; the outer casing (8-1) of the combustion chamber is tightly connected to the front force-receiving casing (8-4) and the rear support casing (8-5) by means of annular flanges on the front part and the rear part, respectively; the internal casing (8-2) of the combustion chamber is connected to the front force-receiving casing (8-4) by means of an annular flange on the front part and, together with the outer casing (8-1) of the combustion chamber, forms a volumetric annular cavity (8A) of the combustion chamber; a diffuser (8-6) is attached to a rear portion of the combustion chamber inner casing (8-2), the end portion of the diffuser (8-6) being an inlet (8-6A) of the combustion chamber; the combustion chamber output (8-5A) is made in the rear support casing (8-5); the flame tube (8-3) is installed in a volumetric ring-shaped working space; the low emission nozzle is passed through a mounting hole with an annular conical surface in the front of the front force housing (8-4) and inserted into a socket in the head of the flame tube (8-3); the flame tube (8-3) in the middle part is equipped with holes (8-3A) for the main combustion; two fixing devices (8-7) are connected to the head part of the flame tube (8-3); The mounting base of the tail part of the flame tube (8-3) is mounted on the rear support casing (8-5) by means of a three-point support. 13. The combustion chamber for a two-component low emission fuel according to claim 12, characterized in that the low emission nozzle is a low emission nozzle according to any one of claims. 1-11. 14. Gas turbine generator unit, characterized in that it contains a combustion chamber (8) for a two-component low-emission fuel according to any one of paragraphs. 12 or 13, low emission two-component fuel supply control system, compressor (7), turbine wheel (9) and generator (10); the combustion chamber (8) for the low emission two-component fuel is connected to the low emission nozzle ring tube system (F) of the low emission two-component fuel supply control system; the high temperature and high pressure air leaving the compressor (7) enters the combustion chamber inlet (8-6A) into the diffuser (8-6) with deceleration and diffusion, and then passes into the annular cavity (8A) of the combustion chamber; the air is then distributed into the low emission nozzle (11) and mixed with the flammable liquid or gaseous fuel to form a flammable mixture, which burns steadily in the flame tube (8-3) with high efficiency and is discharged through the combustion chamber outlet (8-5A), which drives the turbine wheel (9) to provide output power for the generator (10) to generate electricity; wherein the two-component fuel supply control system with low emissions contains a flammable liquid supply system (A), a gaseous fuel supply system (B), a flammable liquid purging system (C), a gaseous fuel purging system (D), an auxiliary air supply system (E). atomization and low emission nozzle ring tube system (F); wherein the low emission nozzle annular tube system F comprises an annular tube (1-9H) for flammable liquid, an auxiliary annular tube (4-1H) for atomization air, a first line annular tube (2-1H) for gaseous fuel, and an annular tube ( 3-1H) second line for gaseous fuel; ring tube (1-9H) for flammable liquid, auxiliary ring tube (4-1H) for atomizing air, first line ring tube (2-1H) for gaseous fuel and ring tube (3-1H) second line for gaseous fuel by diverting tubes are respectively connected to the inlet pipe (1-9) of the line for flammable liquid, the auxiliary inlet pipe (1-6) of the line for atomization air, the first inlet pipe (2-1) for gaseous fuel and the second inlet pipe (3-1) for gaseous fuel on a low emission nozzle; when burning a flammable liquid: in the following operating ignition mode and idle mode: the flammable liquid supply system (A) is put into operation, the gaseous fuel supply system (B) is not put into operation, the flammable liquid purge system (C) is not put into operation, the gaseous fuel purge system (D) fuel is put into operation, the auxiliary atomization air supply system (E) is put into operation; wherein the flammable liquid supply system (A) through the flammable liquid flow line (A0) is introduced into the flammable liquid annular tube (1-9H) of the low emission nozzle annular tube system (F) and then introduced into the flammable liquid line of the low emission nozzle emissions; the auxiliary atomizing air supply system (E) by means of the auxiliary atomizing air flow line (E0) is introduced into the auxiliary atomizing air ring pipe (4-1H) and then introduced into the atomizing air line of the low emission nozzle to carry out auxiliary atomization of flammable liquid; The fuel gas purge system (D) is divided into two flow lines, namely, a first branch gaseous fuel flow line purge line (D0-1) and a second branch gaseous fuel flow line purge line (D0-2) to carry out purge of the gaseous gas annular tube. fuel and low emission nozzle bores for cleaning purposes when they are not in operation; in the above idle mode: the atomizing air line purge air source through the auxiliary atomizing air supply system (E) controls the supply for the atomization air purge line (C0-2) of the flammable liquid line purge system (C) that is, the auxiliary air source The atomization air supply supplies compressed air from the annular cavity space formed by the outer casing of the low emission two-component combustion chamber and the flame tube, while other systems remain unchanged; when burning gaseous fuel: the flammable liquid supply system (A) is turned off, the gaseous fuel supply system (B) is put into operation, the flammable liquid purging system (C) is put into operation; in the following operating ignition mode and idle mode: compressed air from the annular cavity of the combustion chamber for two-component fuel with low emissions is introduced into the flammable liquid line (A0) of the flammable liquid supply system (A), the second branch line (D0-2) of the purge gaseous fuel flow line of the gaseous purge system (D) fuel and auxiliary line (E0) for atomization air auxiliary system (E) atomization air supply; The fuel gas is introduced into the annular fuel gas line (2-1H) of the first gaseous fuel line of the low emission nozzle ring tube system (F) by the gaseous fuel supply system (B) and then introduced into the first gaseous fuel inlet pipe (2-1) of the low emission nozzle. with low emissions; the flammable liquid purging system (C) is in the purge operating mode; The auxiliary inlet pipe (1-6) of the atomization air line and the inlet pipe (1-9) of the flammable liquid line supply compressed air from the annular cavity space formed by the outer casing of the combustion chamber for the low emission two-component fuel and the flame tube, providing cooling purging of all channels; in the above idle mode: system (D) for purging gaseous fuel is turned off; the fuel gas through the gaseous fuel supply system (B) is simultaneously introduced into the ring tube (2-1H) of the first gaseous fuel line of the low emission nozzle ring tube system (F) and the ring tube (3-1H) of the second gaseous fuel line and then introducing low emission nozzles into the first combustible gas line and the second flammable gas line, respectively; When switching between gaseous fuel and flammable liquid, the flammable liquid purge system (C) and the gaseous fuel purge system (D) are turned off and the flammable liquid supply system (A) and the gaseous fuel supply system (B) are put into operation. 15. Combustion chamber for a two-component low-emission fuel according to claim 13, characterized in that the flammable liquid supply system (A) contains a flammable liquid source (A1), a flammable liquid pipeline (A0), a pump (A2), a first filter device ( A3), the first control valve (A4), the first shut-off valve (A5), the first flow sensor (A6), the relief valve (A7) and the first check valve (A8); the flammable liquid pipeline (A0) is connected at one end to the flammable liquid source (A1); pipeline (A0) of flammable liquid at the other end after being connected in series with pump (A2), first filter device (A3), first control valve (A4), first shut-off valve (A5), first flow sensor (A6) and first check valve (A8 ) connected to the ring pipe (1-9H) for flammable liquid; the relief valve (A7) is connected in parallel to the flammable liquid pipeline (A0) between the first flow sensor (A6) and the first check valve (A8). 16. Combustion chamber for a two-component fuel with low emissions according to claim 13, characterized in that the gaseous fuel supply system (B) contains a source (B1) of gaseous fuel, a line (B0) for gaseous fuel, a heating device (B2) with a water bath , second filter device (B3), second shut-off valve (B5), bleed valve (B7), second control valve (B4-1), third control valve (B4-2), third shut-off valve (B5-1), fourth shut-off valve valve (B5-2), second flow sensor (B6-1), third flow sensor (B6-2), second check valve (B8-1) and third check valve (B8-2); line (B0) for gaseous fuel is connected at one end to a source (B1) of gaseous fuel; The other end of the gaseous fuel line (B0) connects the water bath heating device (B2), the second filter device (B3) and the second shut-off valve (B5) in series, followed by division into the first branch line (B0-1) of the gaseous fuel and the second branch line gaseous fuel line (B0-2); The first fuel gas branch line (B0-1) connects the second control valve (B4-1), the third shut-off valve (B5-1), the second flow sensor (B6-1) and the second check valve (B8-1) in series with the subsequent connection with an annular tube (2-1H) of the first line of gaseous fuel; the second fuel gas branch line (B0-2) connects the third control valve (B4-2), the fourth shut-off valve (B5-2), the third flow sensor (B6-2) and the third check valve (B8-2) in series with the subsequent connection with an annular tube (3-1H) of the second line of gaseous fuel. 17. Combustion chamber for two-component fuel with low emissions according to claim 13, characterized in that the auxiliary atomization air supply system (E) contains a source (E1) of compressed air, an auxiliary line (E0) for atomization air, a throttle washer (E2), a fifth shut-off valve (E5), an eighth flow sensor (E6) and an eighth check valve (E8); the auxiliary line (E0) for atomizing air is connected at one end to the source (E1) of compressed air; The atomizing air auxiliary line (E0) is connected in series with the throttle washer (E2), the fifth shut-off valve (E5), the eighth flow sensor (E6) and the eighth check valve (E8), followed by a connection with the auxiliary ring pipe (4-1H ) for air atomization. 18. Combustion chamber for two-component fuel with low emissions according to claim 13, characterized in that the system (C) for purging the flammable liquid contains a line (CD0) for releasing air from the combustion chamber, a line (C0-1) for purging the flammable liquid, a line (C0 -2) atomizing air purge, fourth control valve (C4-1), fifth control valve (C4-2), fourth flow sensor (C6-1), fifth flow sensor (C6-2), fourth check valve (C8-1 ) and the fifth check valve (C8-2); The flammable liquid purging line (C0-1) and the atomizing air purging line (C0-2) are connected in parallel and share the combustion chamber air exhaust line (CD0); the flammable liquid purge line (C0-1) sequentially connects the fourth control valve (C4-1), the fourth flow sensor (C6-1) and the fourth check valve (C8-1) with subsequent connection to the flammable liquid pipeline (A0); The atomizing air purge line (C0-2) connects in series the fifth control valve (C4-2), the fifth flow sensor (C6-2), and the fifth check valve (C8-2), followed by a connection to the atomizing air auxiliary line (E0). 19. Combustion chamber for two-component fuel with low emissions according to claim 13, characterized in that the gaseous fuel purge system (D) contains a first branch line (D0-1) purge of the gaseous fuel flow line, a second branch line (D0-2) purge fuel gas flow lines, sixth control valve (D4-1), seventh control valve (D4-2), sixth flow sensor (D6-1), seventh flow sensor (D6-2), sixth check valve (D8-1), and seventh check valve (D8-2); the first fuel gas flow line purge line (D0-1) and the fuel gas flow line purge second branch line (D0-2) are connected in parallel and share the combustion chamber air discharge line (CD0); The first branch line (D0-1) of the fuel gas flow line purge series connects the sixth control valve (D4-1), the sixth flow sensor (D6-1) and the sixth check valve (D8-1) with a subsequent connection to the first branch line (B0 -1) gaseous fuel; a second branch line (D0-2) for purging the fuel gas flow line connects in series with a seventh control valve (D4-2), a seventh flow sensor (D6-2), and a seventh check valve (D8-2) followed by a connection with a second branch line (B0 -2) gaseous fuel.