CN214366402U

CN214366402U - Gas turbine energy storage system

Info

Publication number: CN214366402U
Application number: CN202022930660.3U
Authority: CN
Inventors: 靳普
Original assignee: Individual
Current assignee: Liu Muhua
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-10-08
Anticipated expiration: 2030-12-07

Abstract

The utility model discloses a gas turbine energy storage system, a gas turbine generator set comprises a core machine and a free machine, wherein the core machine comprises a gas compressor, a turbine and a combustion chamber; the free machine comprises a free turbine and a generator; the gas compressor is provided with a standby outlet, the standby outlet is connected with the inlet of the gas storage box after being connected with the first heat exchanger, the gas outlet end of the turbine is connected with the inlet of the second heat exchanger and then connected with the inlet of the free turbine, and the outlet of the gas storage box is connected with the second heat exchanger and is converged with the exhaust of the turbine. The utility model discloses avoided gas turbine to shut down completely in power consumption millet section, effectively utilized this period preparation high-pressure gas to use in order to supply the power peak section.

Description

Gas turbine energy storage system

Technical Field

The utility model relates to a gas turbine's energy utilization field specifically is a gas turbine energy storage system.

Background

The distributed energy system integrates the advantages of energy conservation, environmental protection, high safety and the like, and is an effective way for relieving the energy crisis, reducing the environmental pollution and the emission of greenhouse gases, improving the energy safety and realizing the strategy of sustainable development. As an important development direction of the distributed energy system, a micro gas turbine is one of the best ways to provide clean, reliable, high-quality, multipurpose, small distributed energy, and is currently rapidly developed in developed countries and regions such as the united states, japan, and the european union, and in China. The distributed energy system based on the micro gas turbine is expected to be widely applied to occasions such as residential buildings, office buildings and the like due to the advantages of small size, light weight, strong fuel adaptability, low fuel consumption rate, low noise vibration, low pollution emission, low maintenance cost and the like.

However, the existing distributed energy system of the micro gas turbine still has the defects that the waste heat of the discharged high-temperature waste gas is not efficiently utilized, the heat circulation efficiency is not high, and energy waste is caused.

According to the document spirit of the joint issue of the economic trade committee of the price bureau of the goods and electricity industry, peak-to-valley electricity consumption of the living of residents is a new electricity price category for developing test points among urban residents. The method is characterized in that 24 hours a day is divided into two time periods, the time period of 14 hours of 8:00-22:00 is called a peak period, and the execution peak electricity price is 0.568 yuan/kwh; the 10 hours of 22: 00-8: 00 of the next day is called a valley period, and the electricity price of the valley is 0.288 yuan/kwh. The "peak-valley electricity price" means that the residents are encouraged to consume a large amount of valley power using the preferential condition of the valley electricity price, such as electric water heaters, air conditioners, and other electric appliances. Meanwhile, for the power department, the peak power utilization is transferred to the valley period, so that the gap of the peak power supply and demand is relieved, the optimized allocation of power resources is promoted, and the method is a win-win strategy of peak clipping and valley filling.

The gas turbine is used as a generator set, if the power can be separately generated in the peak-valley period, the power consumption cost of a user in the peak-valley period can be greatly reduced, and the energy saved in the valley period can be effectively utilized.

Disclosure of Invention

An object of the utility model is to provide a gas turbine energy storage system to the not enough of prior art existence.

In order to achieve the purpose, the utility model adopts the following scheme:

a gas turbine energy storage system is characterized in that a gas turbine generator set comprises a core machine and a free machine, wherein the core machine comprises a gas compressor, a turbine and a combustion chamber, the gas compressor and the turbine are respectively sleeved at two ends of a same rotating shaft, an outlet of the gas compressor is communicated with the combustion chamber, and an air outlet of the combustion chamber is communicated with an air inlet end of the turbine; the free machine comprises a free turbine and a generator, and the turbine and the generator are respectively sleeved at two ends of the free rotating shaft. When the gas turbine normally works, working medium enters from an inlet of the gas compressor, is compressed by the gas compressor and then enters the combustion chamber from an outlet of the gas compressor, high-temperature high-pressure gas ejected after ignition and combustion in the combustion chamber pushes the turbine to do work, the turbine drives the coaxial gas compressor to work, the high-temperature high-pressure gas after doing work is discharged, and the free turbine on the rear side of the turbine is pushed to rotate so as to drive the generator coaxial with the turbine to generate power.

The gas compressor is provided with a standby outlet, the standby outlet is connected with the inlet of the gas storage box after being connected with the first heat exchanger, the gas outlet end of the turbine is connected with the inlet of the second heat exchanger and then connected with the inlet of the free turbine, and the outlet of the gas storage box is connected with the second heat exchanger and is converged with the exhaust of the turbine. When electricity is used in the valley, only the air compressor is started, the temperature of air discharged from the spare outlet of the air compressor is reduced after the air exchanges heat with the first heat exchanger, then the air enters the air storage tank to be stored, and the first heat exchanger recycles the waste heat of the air discharged from the spare outlet of the air compressor; and when the power consumption peak is reached, the gas turbine is started, the standby outlet of the gas compressor and the inlet of the gas storage box are closed, the outlet of the gas storage box is opened, the gas stored in the gas storage box at the power consumption valley stage is subjected to heat exchange in the second heat exchanger to obtain gas with relatively uniform temperature, and the gas is converged with the exhaust of the turbine to jointly push the free turbine to rotate so as to drive the generator coaxial with the free turbine to generate power.

Specifically, when the first heat exchanger is a liquid heat exchanger, the temperature of gas discharged from the spare outlet of the gas compressor is reduced after the gas exchanges heat with the first heat exchanger, and then the gas enters the gas storage tank for storage, the temperature of liquid in the first heat exchanger is increased, and when the liquid is water, distilled water or domestic hot water can be obtained and supplied to users; when the first heat exchanger is a gas heat exchanger, the temperature of gas discharged from the spare outlet of the gas compressor is reduced after the gas exchanges heat with the first heat exchanger, and then the gas enters the gas storage box to be stored, the temperature of the gas in the first heat exchanger is increased, and the gas can be used for being connected with a lithium bromide unit for refrigeration or a medium heating device for heating medium heating or/and an air purifier for purification and then being conveyed to a user as heating air.

The second heat exchanger is a gas heat exchanger and is used for exchanging heat between high-pressure low-temperature gas stored in the valley section of the gas storage box and high-temperature high-pressure gas discharged by the turbine to form gas with relatively uniform temperature.

Further, the air compressor is driven to start through a motor.

Further, the motor is an initiation integrated motor, the initiation integrated motor is used as a motor to drive the micro gas turbine to rotate at first, and after the motor is accelerated to be capable of operating independently, the initiation integrated motor is converted into a generator to generate electricity.

Further, the utility model discloses a core machine still is equipped with the regenerator. The heat regenerator comprises a first inlet, a first outlet, a second inlet and a second outlet; the working medium enters the first inlet of the heat regenerator from the inlet of the gas compressor after being compressed by the gas compressor, flows out from the first outlet, enters the combustion chamber for combustion, enters the inlet of the turbine, enters the second inlet of the heat regenerator from the outlet of the turbine after being worked by the turbine, flows out from the second outlet of the heat regenerator after exchanging heat in the heat regenerator, pushes the free turbine to work after being exchanged heat by the second heat exchanger, and drives the generator to generate power.

Further, the solar energy collecting device is arranged on the micro gas turbine; the micro gas turbine is positioned above the solar reflector and the solar collector is positioned at the focal point of the solar reflector (e.g., dish reflector).

The solar energy collecting device is a heat absorbing plate, and the heat absorbing plate is coated on the shell of the heat regenerator or used as part or all of the shell of the heat regenerator.

The utility model discloses a power generation mode that peak valley starts: in the electricity consumption valley section, the outlet of the air compressor and the outlet of the gas storage tank are closed, the standby outlet of the air compressor, the inlet of the first heat exchanger and the inlet of the gas storage tank are opened, the air compressor is started, air enters the first heat exchanger from the standby outlet after being compressed, heat is transferred to a user, high-pressure gas after heat exchange and cooling enters the gas storage tank from the inlet of the gas storage tank for storage, the gas turbine is prevented from being completely stopped in the electricity consumption valley section, the high-pressure gas is prepared for the electricity consumption peak section to use in the period of time, and waste heat recovery is carried out through the first heat exchanger in the process; at the peak section of power consumption, a spare outlet of the compressor, a first heat exchanger and an inlet of the gas storage tank are closed, an outlet of the compressor, an outlet of the gas storage tank and a second heat exchanger are opened, at the moment, working media enter from the inlet of the compressor, are compressed by the compressor and then enter a combustion chamber from the outlet of the compressor, high-temperature high-pressure gas ejected after ignition and combustion in the combustion chamber pushes a turbine to do work, the turbine drives the coaxial compressor to work, the high-temperature high-pressure gas after doing work on the turbine is discharged and enters the second heat exchanger, meanwhile, high-pressure low-temperature gas stored in the valley section in the gas storage tank enters the second heat exchanger and is combined with the high-temperature high-pressure gas discharged by the turbine to push the free turbine to do work together, and a generator is driven to generate electricity.

Compared with the prior art, the utility model the advantage lie in:

1. the power is generated separately in the peak-valley period, so that the power consumption cost of the peak segment of a user is greatly reduced, and the energy saved in the valley segment can be effectively utilized.

2. The gas turbine is prevented from being completely shut down in the electricity utilization valley section, high-pressure gas is prepared in the period to be used for the electricity utilization peak section, and waste heat recovery is carried out through the first heat exchanger in the process.

3. The peak power consumption section utilizes high-pressure gas stored in the valley power consumption section, and the power generation efficiency is higher.

4. Set up the regenerator and show the heat utilization ratio who improves gas turbine, the leading-in regenerator of high-temperature gas through core machine turbine exhaust, gas after the compressor compression is heated to following, the heat that abundant cyclic utilization combustion gas produced, improve the temperature that gets into the preceding gas of combustion chamber, improve combustion efficiency, produce more heat, make turbine combustion gas temperature higher, form virtuous circle, and then increased the temperature and the energy that get into the interior gas of free machine turbine, improve the generating efficiency of free machine.

5. The solar energy collecting device is arranged, so that the temperature of the heat regenerator is improved, the heat accumulated on the heat regenerator during the daytime is increased by illumination, and more electric energy and heat can be generated.

6. The utility model discloses a gas turbine is multistage turbine, including core machine and free machine, the process complexity is little than single-stage turbine, and the axial length is shorter, and epaxial part arranges still less, and the vibrations phenomenon is gentler. In the aspect of the gaseous recycle of compressor, the utility model discloses an energy storage structure is simple, high-pressure gas's in the gas storage tank utilization ratio has been improved when reducing overall cost, the gas storage process does not need too much device, reduce energy consumption, the gas storage utilization process need not carry out too much processing to high-pressure gas, only need can be used for promoting the free engine turbine rotation with high-pressure low temperature gas and the exhaust high temperature high-pressure gas mixture of core machine turbine, make full use of turbine exhaust carries out the electricity generation of free engine, the integral type motor of inspiring has guaranteed the utilization of the energy that the rotation of core machine turbine produced again simultaneously, the generating efficiency is high.

Drawings

Fig. 1 is a schematic view of the energy storage system of the gas turbine according to the present invention.

Fig. 2 and 3 are schematic diagrams of two other embodiments of the gas turbine energy storage system of the present invention.

Reference numerals: 101-a heat regenerator, 1011-a first inlet, 1012-a first outlet, 1013-a second inlet, 1014-a second outlet, 102-a compressor, 103-a starting integrated motor, 104-a turbine, 105-a combustion chamber, 2-a solar reflector, 21-a solar energy collecting device, 301-a free turbine, 302-a generator, 900-a gas storage tank, 901-a first heat exchanger and 902-a second heat exchanger.

Detailed Description

Example 1

As shown in fig. 1, a gas turbine energy storage system, a gas turbine generator set includes a core machine and a free machine, the core machine includes a compressor 102, a turbine 104 and a combustion chamber 105, the compressor 102 and the turbine 104 are respectively sleeved at two ends of a same rotating shaft, an outlet of the compressor 102 is communicated with the combustion chamber 105, and an outlet of the combustion chamber is communicated with an inlet end of the turbine; the free machine comprises a free turbine 301 and a generator 302, and the free turbine 301 and the generator 302 are respectively sleeved at two ends of the free rotating shaft. When the gas turbine normally works, working medium enters from the inlet of the compressor 102, is compressed by the compressor 102 and then enters the combustion chamber 105 from the outlet of the compressor, high-temperature high-pressure gas ejected after ignition and combustion in the combustion chamber 105 pushes the turbine 104 to do work, the turbine 104 drives the coaxial compressor 102 to work, the high-temperature high-pressure gas after doing work on the turbine 104 is discharged, and the free turbine 301 on the rear side of the turbine is pushed to rotate so as to drive the generator 302 coaxial with the turbine to generate power.

The compressor 102 is provided with a spare outlet which is connected with the inlet of the gas storage tank 900 after being connected with the first heat exchanger 901, the gas outlet end of the turbine 104 is connected with the inlet of the free turbine 301 after being connected with the inlet of the second heat exchanger 902, and the outlet of the gas storage tank 900 is connected with the second heat exchanger 902 to be merged with the exhaust gas of the turbine 104. In the power utilization valley, only the compressor 102 is started, the temperature of the gas discharged from the spare outlet of the compressor 102 is reduced after the heat exchange with the first heat exchanger 901, and then the gas enters the gas storage tank 900 to be stored, and the first heat exchanger 901 recycles the waste heat of the gas discharged from the spare outlet of the compressor 102; when the electricity consumption is high, the gas turbine is started, the standby outlet of the gas compressor 102 and the inlet of the gas storage tank 900 are closed, the outlet of the gas storage tank 900 is opened, gas stored in the gas storage tank 900 at the electricity consumption valley stage is subjected to heat exchange in the second heat exchanger 902, gas with relatively uniform temperature is obtained and is converged with exhaust gas of the turbine 104, and the free turbine 301 is pushed to rotate together to drive the generator 302 coaxial with the turbine to generate electricity.

Specifically, when the first heat exchanger 901 is a liquid heat exchanger, the temperature of the gas discharged from the spare outlet of the gas compressor 102 is reduced after the gas exchanges heat with the first heat exchanger 901, and then the gas enters the gas storage tank 900 for storage, the temperature of the liquid in the first heat exchanger 901 is increased, and when the liquid is water, distilled water or domestic hot water can be obtained and supplied to a user; when the first heat exchanger 901 is a gas heat exchanger, the temperature of the gas discharged from the spare outlet of the gas compressor 102 is reduced after the heat exchange with the first heat exchanger 901, and then the gas enters the gas storage tank 900 for storage, and the temperature of the gas in the first heat exchanger 901 is increased, so that the gas can be used for being connected with a lithium bromide unit for refrigeration or a medium heating device for heating medium heating or/and an air purifier for purification and then is conveyed to a user as warm air.

The second heat exchanger is a gas heat exchanger, and is used for performing heat exchange between high-pressure low-temperature gas stored in the valley section of the gas storage tank 900 and high-temperature high-pressure gas discharged by the turbine 104 to form gas with relatively uniform temperature.

The gas compressor 102 is driven to be started through the initiation integrated motor 103, the initiation integrated motor 103 is used as a motor to drive the micro gas turbine to rotate at first, and after the micro gas turbine is accelerated to be capable of operating independently, the initiation integrated motor is converted into a generator to generate electricity.

Example 2

Referring to fig. 2, on the basis of embodiment 1, the core machine of the present invention is further provided with a heat regenerator 101. The regenerator 101 comprises a first inlet 1011, a first outlet 1012, a second inlet 1013, and a second outlet 1014; the working medium enters from the inlet of the compressor 102, enters the first inlet 1011 of the heat regenerator 101 from the outlet thereof after being compressed by the compressor 102, flows out from the first outlet 1012, enters the inlet of the turbine 104 after being combusted in the combustion chamber 105, enters the second inlet 1013 of the heat regenerator 101 from the outlet of the turbine 104 after being worked by the turbine 104, flows out from the second outlet 1014 of the heat regenerator 101 after exchanging heat in the heat regenerator, pushes the free turbine 301 to work after being exchanged heat by the second heat exchanger 902, and drives the generator 302 to generate electricity.

Example 3

Referring to fig. 3, on the basis of embodiment 2, the solar energy collecting device further comprises a solar energy reflecting mirror 2 and a solar energy collecting device 21, wherein the solar energy collecting device 21 is arranged on the micro gas turbine; the micro gas turbine is positioned above the solar reflector 2 with the solar energy collector 21 at the focal point of the solar reflector 2, e.g. a dish reflector.

The solar energy collecting device 2 is a heat absorbing plate, and the heat absorbing plate is coated on the shell of the heat regenerator 101, or is used as a part of or the whole shell of the heat regenerator 101. The light increases the heat accumulated in the daytime heat regenerator 101, and more electric energy and heat can be generated.

The utility model discloses a power generation mode that peak valley starts: in the electricity consumption valley section, the outlet of the gas compressor 102 and the outlet of the gas storage tank 900 are closed, the spare outlet of the gas compressor 102, the inlet of the first heat exchanger 901 and the inlet of the gas storage tank 900 are opened, the gas compressor 102 is started, air enters the first heat exchanger 901 from the spare outlet after being compressed, heat is transferred to a user, high-pressure gas after heat exchange and cooling enters the gas storage tank 900 from the inlet of the gas storage tank 900 for storage, the gas turbine is prevented from being completely stopped in the electricity consumption valley section, the high-pressure gas is prepared in the period of time for the electricity consumption peak section to use, and waste heat recovery is carried out through the first heat exchanger 901 in the process; in the electricity consumption peak section, the standby outlet of the compressor 102, the first heat exchanger 901 and the inlet of the gas storage tank 900 are closed, the outlet of the compressor 102, the outlet of the gas storage tank 900 and the second heat exchanger 902 are opened, at the moment, working medium enters from the inlet of the compressor 102, is compressed by the compressor 102 and then enters the combustion chamber 105 from the outlet of the compressor, high-temperature high-pressure gas ejected after ignition and combustion in the combustion chamber 105 pushes the turbine 104 to do work, the turbine 104 drives the coaxial compressor 102 to work, the high-temperature high-pressure gas after doing work on the turbine 104 is discharged and enters the second heat exchanger 902, meanwhile, high-pressure low-temperature gas stored in the valley section of the gas storage tank 900 enters the second heat exchanger 902, and after heat exchange and confluence with the high-temperature high-pressure gas discharged by the turbine 104, the free turbine 301 is pushed together to do work, and the generator 302 is driven to generate electricity.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The gas turbine energy storage system is characterized in that a gas turbine generator set comprises a core machine and a free machine, the core machine comprises a gas compressor, a turbine and a combustion chamber, the gas compressor and the turbine are respectively sleeved at two ends of a same rotating shaft, an outlet of the gas compressor is communicated with the combustion chamber, and an air outlet of the combustion chamber is communicated with an air inlet end of the turbine; the free machine comprises a free turbine and a generator, and the turbine and the generator are respectively sleeved at two ends of the free rotating shaft;

the gas compressor is provided with a standby outlet, the standby outlet is connected with the inlet of the gas storage box after being connected with the first heat exchanger, the gas outlet end of the turbine is connected with the inlet of the second heat exchanger and then connected with the inlet of the free turbine, and the outlet of the gas storage box is connected with the second heat exchanger and is converged with the exhaust of the turbine.

2. The gas turbine energy storage system of claim 1, wherein the first heat exchanger is a liquid heat exchanger.

3. The gas turbine energy storage system of claim 1, wherein the first heat exchanger is a gas heat exchanger.

4. The gas turbine energy storage system of claim 1, wherein the second heat exchanger is a gas heat exchanger.

5. The gas turbine energy storage system of claim 1, wherein the compressor is activated by an electric motor.

6. The gas turbine energy storage system of claim 5, wherein the electric machine is an integral starter motor, the integral starter motor initially serves as a motor to rotate the micro gas turbine, and the integral starter motor is converted into a generator to generate electricity after the micro gas turbine is accelerated to operate independently.

7. A gas turbine energy storage system according to any one of claims 1 to 6, wherein the core is further provided with a regenerator; the heat regenerator comprises a first inlet, a first outlet, a second inlet and a second outlet; the working medium enters the first inlet of the heat regenerator from the inlet of the gas compressor after being compressed by the gas compressor, flows out from the first outlet, enters the combustion chamber for combustion, enters the inlet of the turbine, enters the second inlet of the heat regenerator from the outlet of the turbine after being worked by the turbine, flows out from the second outlet of the heat regenerator after exchanging heat in the heat regenerator, pushes the free turbine to work after being exchanged heat by the second heat exchanger, and drives the generator to generate power.

8. The gas turbine energy storage system of claim 7, further comprising a solar reflector, a solar collector, the solar collector being disposed on the micro gas turbine; the micro gas turbine is positioned above the solar reflector, and the solar energy collecting device is positioned on the focus point of the solar reflector.

9. The gas turbine energy storage system of claim 8, wherein the solar energy collection device is an absorber plate, and the absorber plate is wrapped on the regenerator casing, or is a part of or all of the regenerator casing.