WO2010025688A1 - 活塞往复式 低浓度瓦斯发电机组 - Google Patents

活塞往复式 低浓度瓦斯发电机组 Download PDF

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Publication number
WO2010025688A1
WO2010025688A1 PCT/CN2009/073770 CN2009073770W WO2010025688A1 WO 2010025688 A1 WO2010025688 A1 WO 2010025688A1 CN 2009073770 W CN2009073770 W CN 2009073770W WO 2010025688 A1 WO2010025688 A1 WO 2010025688A1
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WO
WIPO (PCT)
Prior art keywords
gas
valve
concentration gas
low
butterfly
Prior art date
Application number
PCT/CN2009/073770
Other languages
English (en)
French (fr)
Inventor
陈宜亮
Original Assignee
胜利油田胜利动力机械集团有限公司
张国昌
柏芹水
马晓钟
秦廷勇
孙佳俊
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 胜利油田胜利动力机械集团有限公司, 张国昌, 柏芹水, 马晓钟, 秦廷勇, 孙佳俊 filed Critical 胜利油田胜利动力机械集团有限公司
Priority to NZ591527A priority Critical patent/NZ591527A/xx
Priority to RU2011111308/06A priority patent/RU2525567C2/ru
Priority to AU2009290005A priority patent/AU2009290005B2/en
Priority to US13/062,421 priority patent/US9217509B2/en
Publication of WO2010025688A1 publication Critical patent/WO2010025688A1/zh
Priority to ZA2011/01812A priority patent/ZA201101812B/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/221—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves specially adapted operating means therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
    • F02D29/06—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving electric generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
    • F02M21/0209—Hydrocarbon fuels, e.g. methane or acetylene
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0227—Means to treat or clean gaseous fuels or fuel systems, e.g. removal of tar, cracking, reforming or enriching
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
    • F02M21/0239—Pressure or flow regulators therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
    • 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

Definitions

  • the present invention relates to an internal combustion engine, and more particularly to a piston reciprocating low concentration gas generator set.
  • the existing internal combustion engine is a fuel-type structure that does not burn coal mine gas.
  • the coal mine gas is mainly a mixture of CH4 and air.
  • the CH4 in the coal seam is pumped out, and the CH4 concentration is between 6% and 80%.
  • This part is usually called “gas”; the gas is divided into high and low concentrations, and the concentration is more than 30% called “high concentration gas”. , less than 30% is called “low concentration gas”.
  • “High-concentration gas” is now available for use in civil and power generation. However, "low-concentration gas” has not been effectively utilized, and it is basically empty, which pollutes the atmosphere and wastes resources.
  • An object of the present invention is to provide a piston reciprocating low-concentration gas generator set, which replaces the diesel fuel system and the pot-type combustor structure with a low-gas supply system, which effectively overcomes or avoids the existence of the prior art described above.
  • the shortcomings or shortcomings can effectively utilize the low concentration gas in the coal mine.
  • the piston reciprocating low concentration gas generator set comprises a low concentration gas engine, a generator set, a water mist conveying system, a cooling water heater, an electric butterfly valve, a pressure regulating valve, a mixer, a TEM controller,
  • the heat load sensor, the gas engine combustion chamber, the air filter, and the speed control butterfly door are characterized in that the water mist conveying system is sequentially connected with the cooling water heater, the electric butterfly valve and the low concentration gas engine, and the pressure regulating valve Mixer, air filter, speed control butterfly door, heat load sensor, gas engine combustor connection are installed on low concentration gas engine, TEM controller is electrically connected with mixer and heat load sensor, generator set and low concentration gas The engines are connected.
  • the gas turbine combustion chamber has a basin structure.
  • the mixers installed on the low-concentration gas engine are respectively connected with the speed regulating butterfly door, the air filter and the pressure regulating valve, and the speed regulating butterfly door is connected with the gas turbine combustion chamber.
  • the pressure regulating valve comprises a valve body and a valve seat mounted therein, a gas valve connected to the gas valve seat, a pressure regulating lever connected to the upper end of the gas valve, an adjusting shaft vertically connected to the pressure regulating lever, and installation thereof of Diaphragm and pressure regulating spring.
  • the mixer comprises a casing, an upper side of which is provided with an air inlet and a gas inlet, a sensor is installed on the air inlet and the gas inlet, an air butterfly is installed in the air inlet, and a gas butterfly is installed in the gas inlet.
  • An air stepping motor is connected to the air butterfly, and a low concentration gas stepping motor is connected to the gas butterfly.
  • the electric butterfly valve comprises a valve body and a butterfly plate mounted therein, a rotating shaft connected to the butterfly plate, a rotating handle and a torsion spring mounted on the rotating shaft, a frame with a casing mounted on the top of the valve body, and a frame on the rotating shaft It is equipped with a pin, a pin, an electromagnet and a tension spring.
  • the shift pin is mounted in parallel with the rotating shaft, perpendicular to the plug, the latch is connected to one side of the electromagnet, and the tension spring is connected to the other side of the electromagnet.
  • the water mist conveying system comprises a water seal type flame arrester, a gas line dry flame arrester, a wet gas release valve, a low concentration gas conveying valve, a water mist control valve, and a high pressure water resistant water supply on a water ring vacuum pump.
  • FIG. 1 is a schematic structural view of the present invention
  • Figure 2 is a schematic view of the structure of the water mist conveying system shown in Figure 1.
  • Figure 3 is a schematic view of the structure of the pressure regulating valve shown in Figure 1.
  • Figure 4 is a side view of Figure 3
  • Figure 5 is a schematic view of the structure of the combustion chamber shown in Figure 1.
  • Figure 6 is a schematic view of the structure of the mixer shown in Figure 1.
  • Figure 7 is a schematic diagram of the A-A structure of Figure 6
  • Figure 8 is a schematic view of the structure of the electric butterfly valve shown in Figure 1.
  • Figure 9 is a side view of Figure 8.
  • a piston reciprocating low concentration gas generator set including a low concentration gas engine 1 1.
  • Generator set 12 fine water mist conveying system 1, cooling dehydrator 2, electric butterfly valve 3, pressure regulating valve 4, mixer 5, TEM controller 6, heat load sensor 7, gas turbine combustion chamber 8, air filtration 9, the speed control butterfly door 10.
  • the water mist conveying system 1 is sequentially connected to the cooling water separator 2, the electric butterfly valve 3, and the low concentration gas engine 11.
  • the pressure regulating valve 4, the mixer 5, the air cleaner 9, the speed control butterfly door 10, the heat load sensor 7, and the gas turbine combustion chamber 8 are connected and mounted on the low concentration gas engine 11.
  • the TEM controller 6 is electrically connected to the mixer 5 and the heat load sensor 7.
  • the genset 12 is connected to a low concentration gas engine 11.
  • Gas turbine combustion chamber 8 is a basin structure.
  • the low-concentration gas engine 11 is connected to the mixer 5, which is connected to the speed control butterfly door 10, the air cleaner 9 and the pressure regulating valve 4, respectively.
  • the speed control butterfly door 10 is connected to the gas turbine combustion chamber 8.
  • the pressure regulating valve 4 includes a valve body 45 and a valve seat 44 mounted therein, a gas valve 43 connected to the gas valve seat 44, a pressure regulating lever 46 connected to the upper end of the gas valve 43, and a vertical perpendicular connection with the pressure regulating lever 46.
  • the adjustment shaft 47 and the diaphragm 42 and the pressure regulating spring 41 mounted thereon.
  • the mixer 5 includes a housing 59 having an air inlet 51 and a gas inlet 55 mounted on one side thereof.
  • a sensor 56 is mounted on the air inlet 51 and the gas inlet 55, an air butterfly 52 is installed in the air inlet 51, a gas butterfly 53 is installed in the gas inlet 55, and an air stepping motor 57 is connected to the air butterfly 52.
  • a low concentration gas stepping motor 58 is connected to the sheet 53.
  • the electric butterfly valve 3 includes a valve body 39 and a butterfly piece 36 mounted therein, a rotating shaft 37 connected to the butterfly piece 36, a rotating handle 38 and a torsion spring 31 mounted on the rotating shaft 37.
  • a frame with a housing is mounted on the top of the valve body 39, and a shift pin 32, a latch 33, an electromagnet 34 and a tension spring 35 are sequentially mounted on the frame and the shaft 37.
  • the shift pin 32 is mounted in parallel with the rotating shaft 37, perpendicular to the pin 33, the pin 33 is coupled to one side of the electromagnet 34, the tension spring 35 is coupled to the other side of the electromagnet 34, and the rotating handle 38 is mounted on the rotating shaft 37.
  • the water mist conveying system 1 comprises a water-sealed flame arrester 102, a gas line dry flame arrester 103, a wet gas release valve 104, a low concentration gas delivery valve 105, a water mist control valve, which are sequentially connected and connected on the water ring vacuum pump 101. 106.
  • the mixing ratio of air to low-concentration gas is determined by the heat load of the low-concentration gas engine 11, and the signal is sent to the TEM controller 6 through the heat load sensor 7, after being calculated and processed.
  • An execution command is issued to direct the stepper motor action on the mixer 5 to change the channel area of the low concentration gas and air on the mixer 5 to achieve the air-fuel ratio control.
  • the water-sealed flame arrester After pumping to the ground, the water-sealed flame arrester is first passed through the pumping wellhead.
  • the flame arrester 102 detects the water level through the radar, and automatically controls the water level within a certain height range to ensure that the pumped gas does not pose a safety hazard to the underground. Install the gas line dry flame arrester 103 in front of the water mist device. Once the water mist delivery system 1 is tempered, it can play a good fire retarding effect.
  • the wet gas discharge valve 104 is arranged to facilitate the maintenance of the water mist delivery device. When the water mist delivery system 1 needs to be replaced, the low concentration gas delivery valve 105 is closed, and the wet gas release valve 104 is opened at the same time.
  • Low-concentration gas mist delivery system 1 After normal operation, ensure that the low-concentration gas delivery valve 105 is opened and the low-concentration gas release valve 104 is closed.
  • the setting of the water mist device control valve 106 in the water mist device system facilitates multi-point, individual control.
  • the high-pressure water mist generator 107 is equidistantly distributed to facilitate the uniform occurrence of water mist.
  • the distance of the high-pressure water mist generator 107 can be adjusted according to the designed gas delivery amount.
  • the system plays the role of “no fire and fire” and “fire extinguishing” in the process of low-concentration gas transportation, eliminating the threat to the mine and creating conditions for the safe use of low-concentration gas.
  • the low-concentration gas enters from the right port of the valve body 45 of the pressure regulating valve 4, and enters the outlet on the left side of the valve body 45 through the gap between the valve seat 44 and the gas valve 43.
  • the pre-compression amount of the pressure-regulating spring 41 is set.
  • the right side of the diaphragm 42 is in communication with the atmosphere, and the left side induces a low concentration gas outlet pressure.
  • the outlet pressure is instantaneously increased, the pressure on the left side of the diaphragm 42 is raised to overcome the pressure of the pressure regulating spring 41, and the diaphragm 42 is moved to the right side, and the pressure valve 46 is driven to move down the valve 43.
  • the low concentration gas channel is relatively stable to maintain the low concentration gas pressure at the outlet. If the low-concentration gas inlet pressure is lowered, the pressure on the left side of the diaphragm 42 is lowered, and the pressure-regulating spring 41 is pressed to the left side of the diaphragm 42 to drive the air valve 43 upward to open the low-concentration gas inlet passage through the pressure-regulating lever 46. Maintaining a low concentration of gas pressure at the outlet is relatively stable.
  • the air stepping motor 57 is connected to the butterfly 52 on the air intake port 51, and the low concentration gas stepping motor 58 is connected to the butterfly 53 on the low concentration gas inlet 55, and the air enters the mixture from the air inlet 51.
  • the low concentration gas is introduced into the mixer 5 from the low concentration gas inlet 55, and the air is mixed with the low concentration gas in the mixing chamber 54 of the mixer 5, the ratio of which is adjusted by the stepping motor 57 and the stepping motor 58 respectively.
  • the opening of 52 and 53 is achieved.
  • the mixed combustible gas exits the mixed gas outlet.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Mechanically-Actuated Valves (AREA)

Description

说明书 活塞往复式 ^(氐浓度瓦斯发电机组
活塞往复式 4氐浓度瓦斯发电机组
[1] 一、 技术领域
[2] 本发明涉及内燃机， 特别涉及一种活塞往复式低浓度瓦斯发电机组。
[3] 二、 背景技术
[4] 现有的内燃机为燃油型结构， 不能燃煤矿瓦斯气体， 煤矿瓦斯气体主要是 CH4 与空气的混合物。 目前煤层中 CH4的地面抽排， CH4浓度在 6%〜80%之间， 这部 分通常称作"瓦斯"； "瓦斯"分高、 低浓度， 浓度大于 30%的称为 "高浓度瓦斯"， 低于 30%的称为 "低浓度瓦斯"。 "高浓度瓦斯"现在已有利用技术， 可民用、 可发 电。 但"低浓度瓦斯"尚没有有效利用手段， 基本排空， 既污染大气环境， 又浪费 资源。
[5] 三、 发明内容
[6] 本发明的目的是提供一种活塞往复式低浓度瓦斯发电机组， 釆用低度瓦斯供给 系统替换柴油机燃油系统以及盆式燃烧室结构， 既有效地克服或避免上述现有 技术中存在的缺点或不足， 又可有效地利用煤矿低浓度瓦斯气体。
[7] 本发明所述的活塞往复式低浓度瓦斯发电机组， 包括低浓度瓦斯发动机、 发电 机组、 细水雾输送系统、 冷却脱水器、 电动蝶阀、 调压阀、 混合器、 TEM控制 器、 热负荷传感器、 瓦斯机燃烧室、 空气滤清器、 调速蝶门， 其特征在于所述 细水雾输送系统上顺次与冷却脱水器、 电动蝶阀和低浓度瓦斯发动机相连接， 调压阀、 混合器、 空气滤清器、 调速蝶门、 热负荷传感器、 瓦斯机燃烧室连接 安装于低浓度瓦斯发动机上， TEM控制器与混合器和热负荷传感器电连接， 发 电机组与低浓度瓦斯发动机相连接。
[8] 其中， 所述瓦斯机燃烧室为盆形结构。 所述低浓度瓦斯发动机上安装连接的混 合器， 分别与调速蝶门、 空气滤清器和调压阀相连接， 调速蝶门与瓦斯机燃烧 室相连接。 所述调压阀包括阀体及其内安装的气阀座、 连接于气阀座上的气阀 、 气阀上端连接的调压杠杆、 与该调压杠杆横向垂直连接的调节轴及其安装的 膜片和调压弹簧。 所述混合器包括壳体， 其上一侧安设有空气进口和瓦斯进口 ， 该空气进口和瓦斯进口上安装有传感器， 空气进口内安装有空气蝶片， 瓦斯 进口内安装有燃气蝶片， 空气蝶片上连接有空气步进电机， 燃气蝶片上连接有 低浓度瓦斯步进电机。 所述电动蝶阀包括阀体及其内安装的蝶片， 该蝶片上连 接的转轴， 该转轴上安装的转动手柄和扭簧， 阀体顶部安装一带壳体的框架， 框架上、 转轴旁顺次安装有档销、 插销、 电磁铁和拉簧。 所述档销与转轴平行 安装， 与插销相垂直， 插销与电磁铁的一边连接在一起， 拉簧与电磁铁的另一 边相连接。 所述细水雾输送系统包括水环真空泵上顺次安装连接的水封式阻火 器、 燃气管路干式阻火器、 湿式气放散阀、 低浓度瓦斯输送阀、 水雾控制阀、 耐高压水雾发生器、 高压水输送管道、 水雾循环泵、 脱水器、 放水阀和终端干 式瓦斯阻火器。
[9] 本发明与现有技术相比具有如下优点：
[10] 1、 能量转换效率高；
[11] 2、 充分利用煤矿低浓度瓦斯，减少温室气体排放， 节约用于发电的标准煤。
[12] 3、 单位功率投资少；
[13] 4、 单位功率输出占地面积小。
[14] 四、 附图说明
[15] 图 1为本发明的一种结构示意图
[16] 图 2为按图 1所示的细水雾输送系统结构示意图
[17] 图 3为按图 1所示的调压阀结构示意图
[18] 图 4为图 3的侧视结构示意图
[19] 图 5为按图 1所示的燃烧室结构示意图
[20] 图 6为按图 1所示的混合器结构示意图
[21] 图 7为图 6的 A-A向结构示意图
[22] 图 8为按图 1所示的电动蝶阀结构示意图
[23] 图 9为图 8的侧视结构示意图
[24] 五、 具体实施方式
[25] 参阅图 1-图 9， 一种活塞往复式低浓度瓦斯发电机组， 包括低浓度瓦斯发动机 1 1、 发电机组 12、 细水雾输送系统 1、 冷却脱水器 2、 电动蝶阀 3、 调压阀 4、 混合 器 5、 TEM控制器 6、 热负荷传感器 7、 瓦斯机燃烧室 8、 空气滤清器 9、 调速蝶门 10。 细水雾输送系统 1顺次与冷却脱水器 2、 电动蝶阀 3和低浓度瓦斯发动机 11相 连接。 调压阀 4、 混合器 5、 空气滤清器 9、 调速蝶门 10、 热负荷传感器 7、 瓦斯 机燃烧室 8连接安装于低浓度瓦斯发动机 11上。 TEM控制器 6与混合器 5和热负荷 传感器 7电连接。 发电机组 12与低浓度瓦斯发动机 11相连接。
[26] 瓦斯机燃烧室 8为盆形结构。 低浓度瓦斯发动机 11上安装连接的混合器 5， 分别 与调速蝶门 10、 空气滤清器 9和调压阀 4相连接。 调速蝶门 10与瓦斯机燃烧室 8相 连接。 调压阀 4包括阀体 45及其内安装的气阀座 44、 连接于气阀座 44上的气阀 43 、 气阀 43上端连接的调压杠杆 46、 与该调压杠杆 46横向垂直连接的调节轴 47及 其上安装的膜片 42和调压弹簧 41。 混合器 5包括壳体 59， 其上一侧安设有空气进 口 51和瓦斯进口 55。 空气进口 51和瓦斯进口 55上安装有传感器 56， 空气进口 51 内安装有空气蝶片 52， 瓦斯进口 55内安装有燃气蝶片 53， 空气蝶片 52上连接有 空气步进电机 57， 燃气蝶片 53上连接有低浓度瓦斯步进电机 58。 电动蝶阀 3包括 阀体 39及其内安装的蝶片 36， 该蝶片 36上连接的转轴 37， 该转轴 37上安装的转 动手柄 38和扭簧 31。 阀体 39顶部安装一带壳体的框架， 框架上、 转轴 37旁顺次 安装有档销 32、 插销 33、 电磁铁 34和拉簧 35。 档销 32与转轴 37平行安装， 与插 销 33相垂直， 插销 33与电磁铁 34的一边连接在一起， 拉簧 35与电磁铁 34的另一 边相连接， 转轴 37上安装转动手柄 38。 细水雾输送系统 1包括水环真空泵 101上 顺次安装连接的水封式阻火器 102、 燃气管路干式阻火器 103、 湿式气放散阀 104 、 低浓度瓦斯输送阀 105、 水雾控制阀 106、 耐高压水雾发生器 107、 高压水输送 管道 108、 水雾循环泵 109、 脱水器 110、 放水阀 111和终端干式瓦斯阻火器 112。
[27] 运行吋， 如图 1， 经水环真空泵 101抽出后， 低浓度瓦斯依次经过细水雾输送系 统 1、 冷却脱水器 2、 电动蝶阀 3、 调压阀 4至混合器 5。 空气经空气滤清器 9至混 合器 5， 在此低浓度瓦斯与空气按给定的比例混合， 可燃混合气经由调速蝶门 10 进入低浓度瓦斯机燃烧室 8。 混合气在燃烧室 8内有规律地爆炸做功， 功率由低 浓度瓦斯发动机 11飞轮输出。 空气与低浓度瓦斯的混合比例由低浓度瓦斯发动 机 11热负荷决定， 通过热负荷传感器 7将信号送至 TEM控制器 6， 经计算处理后 发出执行命令， 指挥混合器 5上的步进电机动作， 改变混合器 5上低浓度瓦斯和 空气的通道面积以实现空燃比的控制。
[28] 低浓度瓦斯经瓦斯水环真空泵 101
抽排到地面后， 在抽排井口首先经水封式阻火器 102
然后进入瓦斯输送管道 108， 该阻火器 102通过雷达检测水位， 将水位自动控制 在一定高度范围内， 以保证抽放的瓦斯不会对井下产生安全隐患。 在水雾装置 前安装燃气管路干式阻火器 103， 一旦水雾输送系统 1发生回火， 能起到很好的 阻火作用。 湿式燃气放散阀 104的设置便于维护水雾输送装置， 当水雾输送系统 1需要更换零部件吋， 要关闭低浓度瓦斯输送阀 105， 同吋开启湿式燃气放散阀 1 04。 低浓度瓦斯水雾输送系统 1正常工作吋， 要保证开启低浓度瓦斯输送阀 105 ， 关闭低浓度瓦斯放散阀 104。 水雾装置系统中水雾装置控制阀 106的设置便于 进行多点、 单独控制。 耐高压水雾发生器 107等距离分布， 便于水雾均匀发生， 根据设计瓦斯输送量的大小， 可以调整耐高压水雾发生器 107的距离。 该系统在 低浓度瓦斯输送过程中起到"无火防火"、 "有火灭火"的作用， 消除对矿井的威胁 ， 为低浓度瓦斯安全利用创造了条件。
[29] 低浓度瓦斯从调压阀 4的阀体 45右侧口进入， 经气阀座 44和气阀 43之间的缝隙 进入阀体 45左侧的出口。 根据低浓度瓦斯机对低浓度瓦斯进气压力的要求， 通 过调压弹簧 41的预压缩量来设定。 膜片 42的右侧与大气连通， 左侧感应低浓度 瓦斯出气压力。 如果进气压力升高， 出气压力瞬吋升高， 膜片 42左侧压力升高 克服调压弹簧 41压力， 膜片 42向右侧移动， 通过调压杠杆 46带动气阀 43下移关 小低浓度瓦斯通道， 以维持出口低浓度瓦斯压力相对稳定。 如果低浓度瓦斯进 气压力降低， 膜片 42左侧压力降低， 调压弹簧 41向膜片 42左侧压去， 通过调压 杠杆 46带动气阀 43向上移动开启低浓度瓦斯进气通道， 以维持出口低浓度瓦斯 压力相对稳定。
[30] 空气步进电机 57与空气进气口 51上的蝶片 52相连， 低浓度瓦斯步进电机 58与低 浓度瓦斯进气口 55上的蝶片 53相连， 空气从空气进口 51进入混合器 5， 低浓度瓦 斯由低浓度瓦斯进口 55进入混合器 5， 空气与低浓度瓦斯在混合器 5中的混合腔 5 4混合， 其比例由步进电机 57与步进电机 58分别调整蝶片 52和 53的开度来实现。 混合后的可燃气体从混合气出口出去。
当电动蝶阀 3处于通电状态吋， 通过转动手柄 38手动克服扭簧 31的弹力， 将蝶 阀 3打开， 同吋电磁铁 34的电磁力克服拉簧 35的拉力。 插销 33插入档销 32下面， 当低浓度瓦斯发动机 11要求保护停机吋， 外部电源切断， 电磁铁 34失去电磁力 ， 拉簧 35将插销 33拉回， 蝶片 36在扭簧 31的作用下将电动蝶阀 3关闭。

Claims

权利要求书
1、 一种活塞往复式低浓度瓦斯发电机组， 包括低浓度瓦斯发动机 11、 发电 机组 12、 细水雾输送系统 1、 冷却脱水器 2、 电动蝶阀 3、 调压阀 4、 混合器 5 、 TEM控制器 6、 热负荷传感器 7、 瓦斯机燃烧室 8、 空气滤清器 9、 调速蝶 门 10， 其特征在于所述细水雾输送系统 1顺次与冷却脱水器 2、 电动蝶阀 3和 低浓度瓦斯发动机 11相连接， 调压阀 4、 混合器 5、 空气滤清器 9、 调速蝶门 10、 热负荷传感器 7、 瓦斯机燃烧室 8连接安装于低浓度瓦斯发动机 11上， TEM控制器 6与混合器 5和热负荷传感器 7电连接， 发电机组 12与低浓度瓦 斯发动机 11相连接。
2、 根据权利要求 1所述活塞往复式低浓度瓦斯发电机组， 其特征在于所述 瓦斯机燃烧室 8为盆形结构。
3、 根据权利要求 1所述活塞往复式低浓度瓦斯发电机组， 其特征在于所述 低浓度瓦斯发动机 11上安装连接的混合器 5， 分别与调速蝶门 10、 空气滤清 器 9和调压阀 4相连接， 调速蝶门 10与瓦斯机燃烧室 8相连接。
4、 根据权利要求 1或 3所述活塞往复式低浓度瓦斯发电机组， 其特征在于所 述调压阀 4包括阀体 45及其内安装的气阀座 44、 连接于气阀座 44上的气阀 43 、 气阀 43上端连接的调压杠杆 46、 与该调压杠杆 46横向垂直连接的调节轴 4 7及其上安装的膜片 42和调压弹簧 41。
5、 根据权利要求 1或 3所述活塞往复式低浓度瓦斯发电机组， 其特征在于所 述混合器 5包括壳体 59， 其上一侧安设有空气进口 51和瓦斯进口 55。 空气进 口 51和瓦斯进口 55上安装有传感器 56， 空气进口 51内安装有空气蝶片 52， 瓦斯进口 55内安装有燃气蝶片 53， 空气蝶片 52上连接有空气步进电机 57， 燃气蝶片 53上连接有低浓度瓦斯步进电机 58。
6、 根据权利要求 1所述活塞往复式低浓度瓦斯发电机组， 其特征在于所述 电动蝶阀 3包括阀体 39及其内安装的蝶片 36， 该蝶片 36上连接的转轴 37， 该 转轴 37上安装的转动手柄 38和扭簧 31。 阀体 39顶部安装一带壳体的框架， 框架上转轴 37旁顺次安装有档销 32、 插销 33、 电磁铁 34和拉簧 35。
7、 根据权利要求 6所述活塞往复式低浓度瓦斯发电机组， 其特征在于所述 档销 32与转轴 37平行安装， 与插销 33相垂直， 插销 33与电磁铁 34的一边连 接在一起， 拉簧 35与电磁铁 34的另一边相连接， 转轴 37上安装转动手柄 38
8、 根据权利要求 1所述活塞往复式低浓度瓦斯发电机组， 其特征在于所述 细水雾输送系统 1包括水环真空泵 101上顺次安装连接的水封式阻火器 102、 燃气管路干式阻火器 103、 湿式气放散阀 104、 低浓度瓦斯输送阀 105、 水雾 控制阀 106、 耐高压水雾发生器 107、 高压水输送管道 108、 水雾循环泵 109 、 脱水器 110、 放水阀 111和终端干式瓦斯阻火器 112。
2、 根据权利要求 1所述活塞往复式低浓度瓦斯发电机组， 其特征在于所述 瓦斯机燃烧室 8为盆形结构。
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CN105840347A (zh) * 2016-03-29 2016-08-10 成都科力夫科技有限公司 一种双燃料机车的喷气控制系统
CN114544908A (zh) * 2022-04-24 2022-05-27 山西和运能源服务有限公司 一种煤矿低浓度瓦斯制热装置

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US20120017872A1 (en) 2012-01-26
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