CN201003437Y - Electronically controlled double valve gas fuel mixer - Google Patents
Electronically controlled double valve gas fuel mixer Download PDFInfo
- Publication number
- CN201003437Y CN201003437Y CNU2007200337260U CN200720033726U CN201003437Y CN 201003437 Y CN201003437 Y CN 201003437Y CN U2007200337260 U CNU2007200337260 U CN U2007200337260U CN 200720033726 U CN200720033726 U CN 200720033726U CN 201003437 Y CN201003437 Y CN 201003437Y
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- CN
- China
- Prior art keywords
- gas
- valve
- air
- outer sleeve
- sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 49
- 239000003345 natural gas Substances 0.000 abstract description 6
- 210000003437 trachea Anatomy 0.000 abstract 4
- 239000003245 coal Substances 0.000 description 10
- 239000002737 fuel gas Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000567 combustion gas Substances 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003380 propellant Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
本实用新型涉及电控双阀式气体燃料混合器。解决了甲烷浓度变化范围大的煤层气发动机混合气的空气－燃气比问题。结构特点是：混合器的混合室壳体为三通管状，两侧管口分别连通着气阀，另一侧管为文丘里喉管式，文丘里喉管下部设有节气阀门；气阀包括外套筒，其进口连通着气管，气管伸入外套筒内，气管上套设有内套筒，内套筒轴向通过伸至外套筒外的轴连接着步进电机，气管和内套筒经上对应设有出气口。本实用新型可以满足现场气源甲烷浓度大范围变化要求，本混合器与天然气发动机的配套功率在40kW～100kW之间，配套性好，其使用寿命长。
The utility model relates to an electronically controlled double-valve gas fuel mixer. The problem of the air-gas ratio of the mixed gas of the coalbed methane engine with a large variation range of the methane concentration is solved. The structural features are: the mixing chamber shell of the mixer is a three-way tubular shape, the nozzles on both sides are respectively connected to the air valve, and the other side pipe is a Venturi throat type, and the lower part of the Venturi throat is equipped with a throttle valve; the air valve includes The outer sleeve, the inlet of which is connected to the trachea, the trachea extends into the outer sleeve, the trachea is covered with an inner sleeve, the inner sleeve is axially connected with the stepper motor through the shaft extending outside the outer sleeve, the trachea and the inner sleeve An air outlet is correspondingly arranged on the sleeve. The utility model can meet the requirements of large-scale variation of methane concentration of the on-site gas source. The matching power of the mixer and the natural gas engine is between 40kW and 100kW, and the matching performance is good, and the service life is long.
Description
Technical field
The utility model relates to gas fuel mixer.
Background technique
Along with petering out and pollution of atmosphere serious day by day of the whole world energy, developing oligosaprobic new energy has become the new problem that countries in the world face, and wherein coal-seam gas is as the associated gas in colliery, because of the abundant great attention that just has been subjected to national governments of its reserves.China is as Coal Production big country, and coal resources are very abundant, and the reserves of coal-seam gas are very considerable.
Because coal-seam gas contains methane, have combustibility, the safety in production in colliery is had harmfulness.So the most of collieries of China enter in the atmosphere as waste gas after all directly coal-seam gas being extracted out at present.This not only can cause pollution of atmosphere, and significant wastage resource.Therefore, rationally utilize the coal bed gas resource of China's coal-mine, become domestic relevant department and expert's common recognition.Wherein, exploiting economy, efficient, energy-saving and environmental protection type coal bed gas engine have become the focus of current research.This gaseous propellant engine can be used as the ideal power of Coal Production, exploitation and even communications and transportation.
But the effective combustible constituent-methane concentration in the coal-seam gas can change with the place of production, season, time variation, and this has brought very big difficulty for the design and the stable operation of coal bed gas engine.
Coal-seam gas is the coal seam associated gas, and main component is a methane.As the chief component of damp, coal-seam gas is taken as harmful gas always and directly enters atmosphere.In recent years, along with the scarcity of petroleum resources, more and more to the research of gas utilization.At present, mostly domestic and international utilization to coal-seam gas is coal-seam gas as domestic gas.Simultaneously, increasing colliery is used in its alternative as rock gas on the natural gas engine generator set in colliery.
But the mixer of existing natural gas engine generally is the design of high concentration rock gas both at home and abroad, and methane concentration not only can change with the place of production, season, time in the coal-seam gas, and along with the varied in thickness in coal seam also changes, its change in concentration may be between 30%-90%.The acute variation of this methane concentration not only can cause the variation of natural gas engine output power, and can make motor produce serious superheating phenomenon.Simultaneously, the large-scale variation of methane concentration also can influence the operation stability of motor, makes the utilization efficiency of natural gas engine have a greatly reduced quality, even makes normally safe handling of motor.Therefore, research and development can adapt to the gas fuel mixer of the coal bed gas engine special use of big methane concentration range automatically, are of great practical significance and use value.
The model utility content
The utility model patent purpose is, by the position of accurate control air valve and gas valve, can accurately control the air-combustion gas ratio of mixer outlet mixed gas automatically, can satisfy the electric controlled bivalve type mixer of fuel gas of engine high-efficiency, stable operation.
Concrete structural design scheme is as follows:
Electric controlled bivalve type mixer of fuel gas comprises mixer, and described mixing chamber housing is the threeway tubulose, and the both sides mouth of pipe is being communicated with air valve respectively, and another side pipe is the Venturi throat formula, and the Venturi throat bottom is provided with choke valve;
Described air valve comprises outer sleeve, outer sleeve one side is outlet, opposite side is import, import is being communicated with tracheae, and tracheae stretches in the outer sleeve, and on the tracheal wall, with the outlet corresponding part be provided with gas port, be arranged with inner sleeve on the tracheae, inner sleeve is axially connecting stepper motor by extending the outer axle of outer sleeve, and stepper motor is positioned at outside the outer sleeve, on the inner sleeve, the corresponding air outlet that is provided with gas port.
Be respectively equipped with position transducer on the air valve of described both sides, also be provided with methane transducer on the side air valve, described closure is provided with position transducer.
Described air throttle is the throttle type valve.
Described mixing chamber case material is an aluminum alloy.
The utility model is by the position of accurate control air valve and gas valve, can accurately control the air-combustion gas ratio of mixer outlet mixed gas automatically, again in conjunction with advanced electron controls technology, make coal bed gas engine can efficiently, stably use the very big coal-seam gas of change in concentration, efficient, the energy-saving and environmental protection type dynamic power machine novel for China's development provide reliable assurance.
The utility model electric controlled bivalve type mixer of fuel gas has two air valves, be air valve and gas valve, realize two-door regulatory function, can satisfy the requirement of on-the-spot source of the gas methane concentration wide variation, excursion can reach 30～100%, and at present the Applicable scope of external proportion expression gas fuel mixer is only between 70～100%, and index is better than abroad.
The match power of this mixer and natural gas engine is between 40kW～100kW, and matching performance is good.The mixer shell adopts the precision aluminium-alloy casting, and dimensional accuracy height, smooth surface are attractive in appearance.
Mixer core critical component-metal inside and outside sleeve formula air valve, antitypy is good, and the dimensional stability height can, reliable operation stable-40 ℃～80 ℃ temperature range inside dimensions.The mixer long service life can reach 8000 hours, reaches the index of external similar advanced product.
Description of drawings
Fig. 1 is the utility model structural representation,
Fig. 2 is the mixing chamber structural representation,
Fig. 3 is the air valve structure schematic representation,
Fig. 4 is the warp-wise sectional view of Fig. 3.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described by embodiment.
Embodiment:
Electric controlled bivalve type mixer of fuel gas, its mixing chamber housing 2 is the threeway tubulose, the both sides mouth of pipe is being communicated with air valve respectively, one side air valve is that air valve 1 opposite side air valve is a gas valve 3, mixing chamber housing 2 another side pipes are the Venturi throat formula, and the Venturi throat bottom is an air throttle 9, sees Fig. 1 and Fig. 2.
Air valve comprises outer sleeve 12, outer sleeve 12 1 sides are outlet 13, opposite side is import 14, import 14 is being communicated with tracheae 15, and tracheae 15 stretches in the outer sleeve, and on the tracheal wall, with the outlet corresponding part be provided with gas port 16, be set with inner sleeve 17 on the tracheae 15, inner sleeve 17 is axially connecting stepper motor by extending outer sleeve 12 outer axles, and stepper motor is positioned at outside the outer sleeve 12, on the inner sleeve 17, with the gas port 16 corresponding air outlets 18 that are provided with.
Be separately installed with air valve position transducer 6 and gas valve position transducer 8 on air valve 1 and the gas valve 3, methane transducer 10 also be installed on the gas valve 3, throttle position sensor 11 is installed on the closure 9.
Air throttle is the throttle type valve.
During engine operation, for air fuel ratio being controlled near the chemically correct fuel, ECU (Electrical Control Unit) 7 can be according to the signal of methane transducer, by air stepper motor 4 and combustion gas control motor 5, aperture with control air valve assembly and gas valve assembly, thereby control air mass flow and gas flow make air fuel ratio reach desired numerical value.The working principle of gas valve is: after stepper motor received the ECU (Electrical Control Unit) signal, stepper motor rotated and drives inner sleeve 17 rotations, and outer sleeve 12 maintains static, and cause flow area between the two to change, thereby control enters the gas quantity of mixer.Mixing chamber adopts Venturi throat formula structure, air and fuel can full and uniformly be mixed, accurately the air of control ratio and combustion gas form inflammable mixture through motion valve assemblage and flow out from mixer outlet after mixing chamber fully mixes, and enter middle burning in the cylinder again.Air throttle links to each other with the speed regulator of gaseous propellant engine, enters the mixed gas total amount of cylinder when being used for controlling different operating mode, so that allow motor send desired power.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200337260U CN201003437Y (en) | 2007-01-19 | 2007-01-19 | Electronically controlled double valve gas fuel mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200337260U CN201003437Y (en) | 2007-01-19 | 2007-01-19 | Electronically controlled double valve gas fuel mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201003437Y true CN201003437Y (en) | 2008-01-09 |
Family
ID=39038975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200337260U Expired - Lifetime CN201003437Y (en) | 2007-01-19 | 2007-01-19 | Electronically controlled double valve gas fuel mixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201003437Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091745A (en) * | 2017-04-19 | 2017-08-25 | 西南石油大学 | Vortex engine efficiency test device and method of testing that coal bed gas generates electricity |
| CN109322751A (en) * | 2018-10-09 | 2019-02-12 | 广西玉柴机器股份有限公司 | The gas engine of adaptive methane concentration variation starts control method |
| CN110017223A (en) * | 2019-04-23 | 2019-07-16 | 聊城大学 | A kind of efficient and energy-saving IC engine gas mixer |
| CN116241387A (en) * | 2022-12-26 | 2023-06-09 | 哈尔滨汽轮机厂有限责任公司 | A multi-valve linkage gas machine variable component fuel supply system and its supply method |
-
2007
- 2007-01-19 CN CNU2007200337260U patent/CN201003437Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091745A (en) * | 2017-04-19 | 2017-08-25 | 西南石油大学 | Vortex engine efficiency test device and method of testing that coal bed gas generates electricity |
| CN109322751A (en) * | 2018-10-09 | 2019-02-12 | 广西玉柴机器股份有限公司 | The gas engine of adaptive methane concentration variation starts control method |
| CN110017223A (en) * | 2019-04-23 | 2019-07-16 | 聊城大学 | A kind of efficient and energy-saving IC engine gas mixer |
| CN116241387A (en) * | 2022-12-26 | 2023-06-09 | 哈尔滨汽轮机厂有限责任公司 | A multi-valve linkage gas machine variable component fuel supply system and its supply method |
| CN116241387B (en) * | 2022-12-26 | 2025-11-28 | 哈尔滨汽轮机厂有限责任公司 | Multi-valve linkage type gas engine variable component fuel supply system and supply method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20070119 |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20070119 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |