CN101666264A - 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 PDFInfo
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Abstract
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、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。本发明具有热效率高、耗水少、单位功率投资少和节能、减排、环保等特点,广泛在低浓度瓦斯煤矿及类似场合应用。
Description
一、技术领域
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。
二、背景技术
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。
三、发明内容
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,采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。
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。
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、转轴旁顺次安装有挡销、插销、电磁铁和拉簧。所述挡销与转轴平行安装,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。
本发明与现有技术相比具有如下优点:
1、热效率高,耗水少;
2、节约建发电站的点地面积;
3、建设周期短,单位功率投资少;
4、全国每年少排放CO2 2200多万吨,节约200万吨标准煤。
四、附图说明
图1为本发明的一种结构示意图
图2为按图1所示的细水雾输送系统结构示意图
图3为按图1所示的调压阀结构示意图
图4为图3的侧视结构示意图
图5为按图1所示的燃烧室结构示意图
图6为按图1所示的混合器结构示意图
图7为图6的A-A向结构示意图
图8为按图1所示的电动蝶阀结构示意图
图9为图8的侧视结构示意图
五、具体实施方式
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。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。
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旁顺次安装有挡销32、插销33、电磁铁34和拉簧35。挡销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。
运行时,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。
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需要更换零部件时,要关闭低浓度瓦斯输送阀105,同时开启湿式燃气放散阀104。低浓度瓦斯水雾输送系统1正常工作时,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。
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,出气压力瞬时升高,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。
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54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处于通电状态时,通过转动手柄38手动克服扭簧31的弹力,将蝶阀3打开,同时电磁铁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要求保护停机时,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 (8)
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、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。
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。
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。
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。
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、转轴旁顺次安装有挡销、插销电磁铁和拉簧。
7、根据权利要求6所述活塞往复式低浓度瓦斯发电机组,其特征在于所述挡销与转轴平行安装,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。
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。
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RU2011111308/06A RU2525567C2 (ru) | 2008-09-07 | 2009-09-05 | Газово-поршневой электрогенератор с низкой газовой концентрацией |
US13/062,421 US9217509B2 (en) | 2008-09-07 | 2009-09-05 | Reciprocating piston lean methane generator |
AU2009290005A AU2009290005B2 (en) | 2008-09-07 | 2009-09-05 | Piston-reciprocating type low-concentration gas generator group |
PCT/CN2009/073770 WO2010025688A1 (zh) | 2008-09-07 | 2009-09-05 | 活塞往复式 低浓度瓦斯发电机组 |
NZ591527A NZ591527A (en) | 2008-09-07 | 2009-09-05 | Piston-reciprocating type low-concentration gas generator group |
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RU2011111308A (ru) | 2012-10-20 |
AU2009290005B2 (en) | 2013-12-05 |
RU2525567C2 (ru) | 2014-08-20 |
US9217509B2 (en) | 2015-12-22 |
US20120017872A1 (en) | 2012-01-26 |
AU2009290005A1 (en) | 2010-03-11 |
NZ591527A (en) | 2013-10-25 |
ZA201101812B (en) | 2012-08-29 |
WO2010025688A1 (zh) | 2010-03-11 |
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