CN220470070U - Reservoir area biogas power generation system capable of regulating air-fuel ratio - Google Patents
Reservoir area biogas power generation system capable of regulating air-fuel ratio Download PDFInfo
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- CN220470070U CN220470070U CN202322188138.6U CN202322188138U CN220470070U CN 220470070 U CN220470070 U CN 220470070U CN 202322188138 U CN202322188138 U CN 202322188138U CN 220470070 U CN220470070 U CN 220470070U
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- biogas
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- fuel ratio
- power generation
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- 239000000446 fuel Substances 0.000 title claims abstract description 24
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 21
- 238000010248 power generation Methods 0.000 title claims abstract description 17
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 66
- 239000007789 gas Substances 0.000 claims abstract description 25
- 230000001276 controlling effect Effects 0.000 claims abstract description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000001301 oxygen Substances 0.000 claims abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 5
- 230000033228 biological regulation Effects 0.000 claims abstract description 4
- 210000001503 joint Anatomy 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 230000018044 dehydration Effects 0.000 claims description 3
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000007423 decrease Effects 0.000 description 7
- 230000007547 defect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a storage area biogas power generation system with an adjustable air-fuel ratio, which comprises a biogas collecting, allocating and supplying system, a biogas pretreatment system and a biogas generating set, wherein the biogas collecting, allocating and supplying system comprises a torch, a regulating and accumulating tank, a perishable garbage biogas system and various air source pipelines of a landfill storage area, which are mutually communicated and are in butt joint with an air inlet main pipe of the biogas pretreatment system through valve regulation, the pipelines of the biogas generating set comprise a gas metering valve, a pressure sensor, an oxygen sensor, a methane gas sensor, an air inlet temperature sensor, an air inlet valve regulating and controlling valve and an air inflow electronic controller, and an air filter element of the biogas generating set is provided with a baffle which is matched with the air inlet valve in a sealing way and is used for regulating the air inflow. The utility model supplies low-heat-value biogas with stable gas quality to the biogas generator set by uniformly distributing the biogas through the gas sources of all paths, regulates and controls the air inlet amount, improves the air-fuel ratio, and is beneficial to improving the generating power of the generator set.
Description
Technical Field
The utility model relates to the technical field of biogas power generation, in particular to a reservoir area biogas power generation system capable of regulating and controlling air-fuel ratio.
Background
With the increase of the service life of the landfill site, the methane concentration of the landfill site in the reservoir area gradually decreases, the methane concentration in the landfill reservoir area obviously decreases in the near year, the methane concentration entering the generator set decreases from about 45% to about 35%, about 10% of the methane concentration decreases, the too low methane concentration cannot meet the full-load operation of the methane generator set, the Katreler G3516 gas unit used by I department currently uses a zero pressure valve and a Venturi mixer to control the air-fuel ratio, the mechanical zero pressure valve does not have an automatic air-fuel ratio control function, the carrying capacity of the unit can be reduced along with the decrease of the methane concentration of the landfill gas, an operator can carry the methane concentration only by adjusting the zero pressure valve, the current methane concentration decreases, the fuel heat value decreases, and the power generation power cannot be effectively improved under the condition of not changing pipelines.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problem to be solved is to provide the reservoir area biogas power generation system capable of regulating and controlling the air-fuel ratio, which is beneficial to improving the power generation of the unit by uniformly distributing low-heat value biogas with stable gas quality through communicating gas sources of all paths to supply to the biogas power generator unit, regulating and controlling the air inlet amount and improving the air-fuel ratio.
The technical problems are solved by the following technical scheme.
The system comprises a storage area biogas power generation system capable of regulating air-fuel ratio, a biogas collection and allocation supply system, a biogas pretreatment system and a biogas generator set, wherein the biogas collection and allocation supply system comprises a torch, a regulating and storage tank, a perishable garbage biogas system and various air source pipelines of a landfill storage area, which are mutually communicated and are in butt joint with an air inlet manifold of the biogas pretreatment system through valve regulation and control, the pipelines of the biogas generator set comprise a gas metering valve, a pressure sensor, an oxygen sensor, a methane gas sensor, an air inlet temperature sensor, an air inlet valve regulating and controlling valve and an air inflow electronic controller, and an air filter element of the biogas generator set is provided with a baffle which is matched with the air inlet valve in a sealing way and is used for regulating air inflow.
Preferably, a main pipe pressure meter, a main pipe gas flowmeter, a main pipe methane concentration sensor, a main pipe temperature sensor, a main pipe pneumatic on-off valve, a manual air inlet valve and a flame arrester are sequentially arranged on an air outlet main pipe of the methane pretreatment system.
Preferably, the biogas pretreatment system comprises a biogas dehydration device, a booster fan, an air-cooled radiator and a precise filter.
Preferably, the booster fan is a Roots fan.
Preferably, the fine filter includes a primary filter having a filtration particle size of 10 μm and a secondary filter having a filtration particle size of 3 μm.
Preferably, the main controller of the biogas generator set is a real-time monitoring visual computer with a central control function, and the biogas generator set is controlled to operate by collecting signals of all sensors, comprehensively calculating and giving instructions.
Preferably, the biogas generator set comprises a generator and a biogas internal combustion engine which are coupled.
The beneficial effects of this application:
1. the system comprises an air inlet system, a sensing system, an ignition system and a control system of the whole biogas generating set, wherein an original air inlet zero-pressure valve is removed, a fuel metering valve, a pressure sensor, an oxygen sensor and an air inlet temperature sensor are additionally arranged, the air inlet amount is controlled through electric control and sensors, the air inlet amount is controlled according to the methane concentration in the air inlet through component analysis of the air inlet, a concentration sensor is additionally arranged on low-concentration landfill gas, the landfill gas and the air are respectively controlled by an electric valve, when the methane concentration changes, an engine monitors the combustion condition, a central controller sends out an instruction, the opening of the electric valve is controlled, the air-fuel ratio is adjusted, the combustion condition is monitored by a computer, the fuel valve and an air valve are automatically controlled, and the optimal air-fuel ratio is achieved, and the low-concentration combustion is realized.
2. The methane collecting, allocating and supplying system is integrated through the transformation of pipelines, so that all air source pipelines of a torch, a regulating and accumulating tank, a perishable garbage methane system and a landfill reservoir area are mutually communicated, all air source pipelines can be mutually controlled through valves, the summarized utilization of all air sources is realized, the quality and quantity of the methane air sources are improved, the maximum utilization of all air sources is ensured, the methane in the landfill reservoir area enters a failure period stage, stable low-heat-value methane is supplied to a generator set and air mixed gas, a baffle for regulating the air inflow is additionally arranged on an air filter element, a part of the air filter element is blocked, the air inflow is regulated to be reduced to a certain quantity, the air amount and the low-concentration methane mixed gas are reduced, the air-fuel ratio is reduced, the generating power of the generator set is improved, the generating capacity is gradually improved along with the gradual lifting of the concentration of the mixed gas, and when the concentration of the mixed gas reaches 58%, the generating capacity reaches a peak value.
Drawings
In order to more clearly describe the technical solutions in the embodiments or the background of the present application, the following description will describe the drawings that are required to be used in the embodiments or the background of the present application.
Fig. 1 is a schematic structural view of an embodiment of the present application.
In the figure: the system comprises a 1-biogas collection, allocation and supply system, a 2-biogas pretreatment system, a 3-biogas generator set, a 4-air inlet header pipe, a 5-air filter element, a 6-baffle plate, a 7-air outlet header pipe, an 8-mixer, a 9-turbocharger, a 10-intercooler and an 11-cylinder.
Description of the embodiments
Embodiments of the present application are described below with reference to the accompanying drawings in the embodiments of the present application.
Referring to fig. 1, in the air-fuel ratio adjustable reservoir biogas power generation system of the embodiment of the present application, a biogas collection and distribution supply system 1, a biogas pretreatment system 2 and a biogas generator set 3. The biogas collection, allocation and supply system 1 comprises a torch, a regulating and storing tank, a perishable garbage biogas system and various gas source pipelines in a landfill reservoir area which are communicated with each other and are in butt joint with an air inlet main pipe 4 of the biogas pretreatment system 2 through valve regulation. The biogas pretreatment system 2 comprises a biogas dehydration device, a booster fan, an air-cooled radiator and a precise filter. The booster fan is a Roots fan. The fine filter comprises a primary filter having a filtration particle size of 10 μm and a secondary filter having a filtration particle size of 3. Mu.m. A main pipe pressure meter, a main pipe gas flowmeter, a main pipe methane concentration sensor, a main pipe temperature sensor, a main pipe pneumatic on-off valve, a manual air inlet valve and a flame arrester are sequentially arranged on an air outlet main pipe 7 of the methane pretreatment system 2.
The biogas generator set 3 comprises a generator and a biogas internal combustion engine which are connected in a coupling way. The main controller of the biogas generating set 3 is a real-time monitoring visual computer with a central control function, and the biogas generating set 3 is controlled to run by collecting signals of all sensors, comprehensively calculating and giving instructions. The pipeline of the biogas generating set 3 comprises a gas metering valve, a pressure sensor, an oxygen sensor, a methane gas sensor, an air inlet temperature sensor, an air inlet valve regulating control valve and an air inflow electronic controller. In fig. 1, left side air and right side biogas are mixed according to a certain proportion through a mixer 8, then pressurized through a turbocharger 9, cooled through an intercooler 10, then enter a cylinder 11 for explosion work, and tail gas drives the turbocharger 9. The air filter element 5 is provided with a baffle 6 which is matched with the sealing and blocking for adjusting the air inflow.
The foregoing is merely a part of examples and embodiments of the present utility model, and the scope of the present utility model is not limited thereto, and any person skilled in the art who is familiar with the present utility model can easily think about changes or substitutions within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (7)
1. The reservoir area methane power generation system capable of regulating air-fuel ratio is characterized in that: the biogas collection, allocation and supply system (1), the biogas pretreatment system (2) and the biogas generator set (3), wherein the biogas collection, allocation and supply system (1) comprises a torch, a regulating and storage tank, a perishable garbage biogas system and various air source pipelines in a landfill reservoir area, which are mutually communicated and are in butt joint with an air inlet main pipe (4) of the biogas pretreatment system (2) through valve regulation and control, the pipelines of the biogas generator set (3) comprise a gas metering valve, a pressure sensor, an oxygen sensor, a methane gas sensor, an air inlet temperature sensor, an air inlet valve regulating and controlling valve and an air inflow electronic controller, and a baffle (6) which is matched with the air filter element (5) of the biogas generator set (3) in a sealing and blocking manner and used for regulating the air inflow.
2. The air-fuel ratio adjustable reservoir methane power generation system according to claim 1, characterized in that: a main pipe pressure meter, a main pipe gas flowmeter, a main pipe methane concentration sensor, a main pipe temperature sensor, a main pipe pneumatic on-off valve, a manual air inlet valve and a flame arrester are sequentially arranged on an air outlet main pipe (7) of the biogas pretreatment system (2).
3. The air-fuel ratio adjustable reservoir methane power generation system according to claim 1, characterized in that: the biogas pretreatment system (2) comprises a biogas dehydration device, a booster fan, an air-cooled radiator and a precise filter.
4. The air-fuel ratio adjustable reservoir methane power generation system according to claim 3, characterized in that: the booster fan is a Roots fan.
5. The air-fuel ratio adjustable reservoir methane power generation system according to claim 3, characterized in that: the fine filter comprises a primary filter having a filtration particle size of 10 μm and a secondary filter having a filtration particle size of 3. Mu.m.
6. The air-fuel ratio adjustable reservoir methane power generation system according to claim 1, characterized in that: the main controller of the biogas generating set (3) is a real-time monitoring visual computer with a central control function, and the biogas generating set (3) is controlled to run by collecting signals of all sensors, comprehensively calculating and giving instructions.
7. The air-fuel ratio adjustable reservoir methane power generation system according to claim 1, characterized in that: the biogas generator set (3) comprises a generator and a biogas internal combustion engine which are connected in a coupling way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322188138.6U CN220470070U (en) | 2023-08-15 | 2023-08-15 | Reservoir area biogas power generation system capable of regulating air-fuel ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322188138.6U CN220470070U (en) | 2023-08-15 | 2023-08-15 | Reservoir area biogas power generation system capable of regulating air-fuel ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220470070U true CN220470070U (en) | 2024-02-09 |
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ID=89797956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322188138.6U Active CN220470070U (en) | 2023-08-15 | 2023-08-15 | Reservoir area biogas power generation system capable of regulating air-fuel ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220470070U (en) |
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2023
- 2023-08-15 CN CN202322188138.6U patent/CN220470070U/en active Active
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