CN214304085U - Gas generating set is air inlet unit along separate routes - Google Patents
Gas generating set is air inlet unit along separate routes Download PDFInfo
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- CN214304085U CN214304085U CN202022864497.5U CN202022864497U CN214304085U CN 214304085 U CN214304085 U CN 214304085U CN 202022864497 U CN202022864497 U CN 202022864497U CN 214304085 U CN214304085 U CN 214304085U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The utility model discloses a shunt air inlet device of a gas generator set, which comprises an air inlet system, wherein the air inlet system comprises a gas inlet module, an air inlet module and a mixer; the gas inlet module comprises a pressure regulating valve and a gas regulating valve which are communicated through a gas pipeline, and the air inlet module comprises an air regulating valve; gas engine is provided with 2 gas inlet module of group respectively, and the gas governing valve is linked together with the blender, through automatic closed-loop control system, makes engine and generating set under the prerequisite that does not change the configuration, can satisfy the requirement of admitting air of low heat value gas to can satisfy the composition of single air supply, pressure variation, adopt the utility model discloses technical scheme makes gas engine and generating set use low heat value combustible gas to move more reliable and more stable as fuel.
Description
Technical Field
The utility model relates to a gas engine technical field relates to a gas engine, especially relates to a gas generating set is air inlet unit along separate routes.
Background
With the development of national economy and society, a piston type gas engine and a generator set are used as distributed green energy equipment, and combustible gas such as industrial waste gas is used as fuel to generate electricity or form a combined cooling heating and power system, so that the piston type gas engine and the generator set can become important energy equipment, and the national energy structure adjustment and the development of low-carbon environmental protection industry are promoted. Because the gas engine and the generator set are developed according to a natural gas machine in prototype development, when the gas source used in practice is biogas, biomass gas, gas and other low-calorific-value combustible gases, the content of the main combustible components of the combustible gases is much lower than that of natural gas, and the gas source pressure is low, so that when the combustible gases are used as fuels by the gas engine and the generator set, the configuration of the engine and the generator set, particularly the gas inlet system, cannot meet the requirements of the combustible gases.
When the gas inlet system of the natural gas engine or the generator set uses low-heat-value gas as a gas source, the gas inlet system can cause the insufficient gas inflow of gas and the improper air-fuel ratio adjustment of the mixer, the low heat value generally can change along with the adjustment of the production process, the gas source components and the pressure also change, and the gas inlet system can not meet the gas inflow and the air-fuel ratio adjustment under the change of the gas source, so that the gas engine and the generator set can not stably operate.
SUMMERY OF THE UTILITY MODEL
The utility model provides a shunt air inlet device of a gas generator set for solving the problems,
in order to achieve the above purpose, the utility model adopts the following technical scheme:
the gas generator set branch air inlet device comprises a gas engine and a generator set, wherein the gas engine comprises an air inlet system, and the air inlet system comprises a gas inlet main pipe, a gas inlet module, an air inlet module and a mixer; the gas inlet module comprises a pressure regulating valve and a gas regulating valve which are communicated through a gas pipeline, the air inlet module comprises an air regulating valve, the gas regulating valve is communicated with the mixer, and the air regulating valve is communicated with the mixer; the automatic control system automatically controls the air-fuel ratio according to the running states of the engine and the generator set and the change of an air source by adjusting the opening degrees of the pressure regulating valve, the gas regulating valve and the air regulating valve; the gas engine is respectively provided with two groups of gas inlet modules; firstly, gas enters from a gas inlet main pipe, is decompressed and stabilized by a pressure regulating valve, then is regulated by a gas regulating valve, and finally enters into a mixer; air enters the mixer after the air flow is regulated by the air regulating valve and is mixed with the fuel gas according to the set air-fuel ratio to form mixed gas, and the mixed gas enters the combustion chamber of the engine to combust and do work, so that the generator is driven to generate electricity.
In the shunt gas inlet device of the gas generator set, two groups of gas inlet modules are arranged in parallel, the gas inlet modules are provided with fixed gas flow and air-fuel ratio through the pressure regulating valve and the gas regulating valve, and the opening number of the gas inlet modules is determined according to the maximum gas demand calculated by the heat value of the gas.
Among the gas generating set inlet means along separate routes, the blender is combination formula venturi mixer, and combination formula venturi mixer is through adjusting the flow area of gas passageway to realize the effective mixture of the gas and the air of different air-fuel ratios.
In the shunt air inlet device of the gas generator set, the gas regulating valve regulates the gas inlet amount according to the air-fuel ratio, or closes the air inlet channel of more than one group of gas inlet modules to regulate the gas inlet amount.
Adopt the utility model discloses a beneficial effect of production does:
1. the utility model adopts the premixing air inlet mode before pressurization, and can meet the air inlet requirement of low-heat value combustible gas by connecting two paths of gas inlet pipelines in parallel; the demand and the regulation requirements of low-heat value gas, especially combustible gas containing oxygen, on air can be met through a large-flow air regulating valve; the high-flow combined Venturi mixer can meet the air-fuel ratio mixing requirement of low-heat value combustible gas; through the automatic closed-loop control system, the engine and the generator set can meet the air inlet requirement of low-heat-value gas on the premise of not changing the configuration, and can meet the component and pressure change of a single air source. The operation of the gas engine and the generator set is more stable and reliable when low-heat value combustible gas is used as fuel.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1-gas inlet manifold; 2, 2' -pressure regulating valve; 3, 3' -gas regulating valve; 4-high flow combined venturi mixer; 5-air regulating valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Referring to fig. 1, to the above problem, the utility model provides a gas engine and generating set inlet system along separate routes can satisfy when gas engine and generating set use low heat value combustible gas as fuel, to the regulatory requirement of combustible gas air input and air-fuel ratio to can be when the real-time closed loop adjustment of air supply when changing.
In order to achieve the purpose, the utility model adopts the following technical proposal: the engine and the generator set adopt a pre-mixing air inlet mode before pressurization, the shunt air inlet system adopts two paths of gas inlet pipelines which are configured in parallel, and each path of gas inlet system is independently provided with a pressure regulating valve and a gas regulating valve for regulating the gas inlet amount.
The gas generator set branch air inlet device comprises a gas engine and a generator set, wherein the gas engine comprises an air inlet system, and the air inlet system comprises a gas inlet main pipe 1, a gas inlet module, an air inlet module and a mixer 4; the gas inlet module comprises pressure regulating valves 2 and 2 ' and gas regulating valves 3 and 3 ' which are communicated through gas pipelines, the gas inlet module comprises an air regulating valve 5, the gas regulating valves 3 and 3 ' are communicated with the mixer 4, and the air regulating valve 5 is communicated with the mixer 4; the automatic control system automatically controls the air-fuel ratio according to the running states of the engine and the generator set and the change of an air source by adjusting the opening degrees of the pressure regulating valves 2,2 ', the gas regulating valves 3, 3' and the air regulating valve 5; the gas engine is respectively provided with two groups of gas inlet modules; firstly, gas enters from a gas inlet main pipe 1, is decompressed and stabilized by pressure regulating valves 2 and 2 ', then is regulated in gas flow by gas regulating valves 3 and 3', and finally enters into a mixer 4; air enters the mixer 4 after the air flow is regulated by the air regulating valve 5 and is mixed with the fuel gas according to the set air-fuel ratio to form mixed gas, and the mixed gas enters the combustion chamber of the engine to combust and do work, so that the generator is driven to generate electricity.
The utility model discloses a large-traffic air regulating valve 5 for the air input is adjusted. The large-flow combined type Venturi mixer 4 is adopted, the passing sectional area of a gas channel is adjusted through a mechanical adjusting device, the air-fuel ratio mixing requirement of a gas source is met, and therefore effective mixing of gas and air with different air-fuel ratios is achieved.
The two groups of gas inlet modules are arranged in parallel, the gas inlet modules are provided with fixed gas flow and air-fuel ratio through the pressure regulating valve 2 and the gas regulating valve 3 or are provided with fixed gas flow and air-fuel ratio through the pressure regulating valve 2 'and the gas regulating valve 3', and the opening number of the gas inlet modules is determined according to the maximum gas demand calculated by the heat value of the gas.
The gas regulating valves 3, 3' regulate the gas inflow according to the air-fuel ratio, or close the gas inlet channels of a group of gas inlet modules to regulate the gas inflow.
And an automatic air-fuel ratio control system is configured for adjusting the opening degrees of the gas regulating valve and the air regulating valve and automatically performing closed-loop control according to the running states of the engine and the generator set and the change of an air source.
The utility model adopts the premixing air inlet mode before pressurization, and can meet the air inlet requirement of low-heat value combustible gas by connecting two paths of gas inlet pipelines in parallel; the demand and the regulation requirements of low-heat value gas, especially combustible gas containing oxygen, on air can be met through a large-flow air regulating valve; the high-flow combined Venturi mixer can meet the air-fuel ratio mixing requirement of low-heat value combustible gas; through the automatic closed-loop control system, the engine and the generator set can meet the air inlet requirement of low-heat-value gas on the premise of not changing the configuration, and can meet the component and pressure change of a single air source. The operation of the gas engine and the generator set is more stable and reliable when low-heat value combustible gas is used as fuel.
Example (b):
as shown in fig. 1, a fuel gas inlet pipeline of a fuel gas engine and generator set bypass inlet system adopts a two-way parallel structure, the fuel gas inlet pipeline of the A route is provided with 1 pressure regulating valve 2 and 1 fuel gas regulating valve 3, the fuel gas inlet pipeline of the B route is provided with 1 pressure regulating valve 2 'and 1 fuel gas regulating valve 3', the bypass inlet system is provided with 1 large-flow combined venturi mixer 4 and an air regulating valve 5.
The low-calorific-value combustible gas passes through the gas inlet main pipe, then passes through the pressure regulating valves 2,2 ', 3 and 3' of the paths A and B respectively, and then enters the large-flow combined venturi mixer 4, the venturi mixer 4 is composed of two groups of mixing structures, and the two paths of gas respectively enter the gas inlets of the two groups of mixing structures of the mixer 4. Air passes through the air adjustment valve 5 and enters the air inlet of the mixer 4.
The theoretical air-fuel ratio is calculated according to the components of the low-heat value combustible gas, and the passing sectional area of the gas channel is adjusted through the mechanical adjusting device of the large-flow combined type Venturi mixer 4, so that the air-fuel ratio mixing requirement of the gas source is met. When the unit operates, the control system automatically and synchronously adjusts the pressure regulating valve 2 and the pressure regulating valve 2' according to the air-fuel ratio and air input requirements of an air source and the operating states of the engine and the generator set, so that the operating requirements of the engine and the generator set are met. When the change of the gas source is large, for example, the gas demand becomes small, the gas regulating valve can be synchronously regulated to reduce the gas inflow, and the gas demand becomes large and is reversely controlled; when the air demand becomes smaller, the air regulating valve reduces the air intake amount, and when the air demand becomes larger, the reverse control is performed.
The utility model discloses the key feature:
the engine and the generator set adopt a pre-mixing air inlet mode before pressurization, the branch air inlet system is composed of two fuel gas inlet pipelines which are connected in parallel, a single air regulating valve and an air inlet and large-flow combined Venturi mixer, and an automatic closed-loop control air-fuel ratio control system is configured.
Two paths of gas inlet pipelines are arranged in parallel, and each gas inlet system is independently provided with a pressure regulating valve and a gas regulating valve for regulating the gas inlet amount.
A large-flow air regulating valve is adopted for regulating the air inflow.
The large-flow combined type Venturi mixer is adopted, the passing sectional area of a gas channel is adjusted through a mechanical adjusting device, the air-fuel ratio mixing requirement of a gas source is met, and therefore effective mixing of gas and air with different air-fuel ratios is achieved.
And an automatic air-fuel ratio control system is configured for adjusting the opening degrees of the gas regulating valve and the air regulating valve and automatically performing closed-loop control according to the running states of the engine and the generator set and the change of an air source.
The foregoing is a more detailed description of the present invention taken in conjunction with the accompanying drawings, which are not intended to limit the invention to the particular embodiments described herein. For those skilled in the art to which the invention pertains, equivalent substitutes or obvious modifications may be made without departing from the spirit of the invention, and the same properties or uses are deemed to be within the scope of the invention as determined by the claims as filed.
Claims (4)
1. A gas generating set is air inlet means along separate routes, including gas engine and generating set, the gas engine includes the air intake system, characterized by that, the air intake system includes the gas air inlet manifold (1), the gas air inlet module, air inlet module and blender (4); the gas inlet module comprises pressure regulating valves (2,2 ') and gas regulating valves (3,3 ') which are communicated through gas pipelines, the gas inlet module comprises an air regulating valve (5), the gas regulating valves (3,3 ') are communicated with the mixer (4), and the air regulating valve (5) is communicated with the mixer (4); the automatic control system automatically controls the air-fuel ratio according to the running states of the engine and the generator set and the change of an air source by adjusting the opening degrees of the pressure regulating valves (2,2 '), the gas regulating valves (3, 3') and the air regulating valve (5); the gas engine is respectively provided with two groups of gas inlet modules; the gas firstly enters from a gas inlet main pipe (1), is decompressed and stabilized through pressure regulating valves (2,2 '), then is regulated through gas regulating valves (3, 3'), and finally enters into a mixer (4); air enters the mixer (4) after the air flow is regulated by the air regulating valve (5) and is mixed with the fuel gas according to the set air-fuel ratio to form mixed gas, and the mixed gas enters the combustion chamber of the engine to burn and do work, so that the generator is driven to generate electricity.
2. The gas generator set branch air inlet device according to claim 1, wherein two groups of gas inlet modules are arranged in parallel, the gas inlet modules are set with fixed gas flow and air-fuel ratio through the pressure regulating valve (2) and the gas regulating valve (3), and the opening number of the gas inlet modules is determined according to the maximum gas demand calculated by the heat value of the gas.
3. The gas generator set branch air inlet device according to claim 1, characterized in that the mixer (4) is a combined venturi mixer, and the combined venturi mixer can realize effective mixing of gas and air with different air-fuel ratios by adjusting the flow area of the gas channel.
4. The gas generator set shunt inlet device of claim 1, wherein the gas regulating valve (3, 3') regulates the gas inlet amount according to the air-fuel ratio, or closes the inlet channel of more than one group of gas inlet modules to regulate the gas inlet amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022864497.5U CN214304085U (en) | 2020-12-03 | 2020-12-03 | Gas generating set is air inlet unit along separate routes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022864497.5U CN214304085U (en) | 2020-12-03 | 2020-12-03 | Gas generating set is air inlet unit along separate routes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214304085U true CN214304085U (en) | 2021-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022864497.5U Active CN214304085U (en) | 2020-12-03 | 2020-12-03 | Gas generating set is air inlet unit along separate routes |
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| Country | Link |
|---|---|
| CN (1) | CN214304085U (en) |
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2020
- 2020-12-03 CN CN202022864497.5U patent/CN214304085U/en active Active
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