CN2382918Y - Three stage directly function reversal pressure reducing valve for compressed natural gas automobile - Google Patents
Three stage directly function reversal pressure reducing valve for compressed natural gas automobile Download PDFInfo
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- CN2382918Y CN2382918Y CN 99232263 CN99232263U CN2382918Y CN 2382918 Y CN2382918 Y CN 2382918Y CN 99232263 CN99232263 CN 99232263 CN 99232263 U CN99232263 U CN 99232263U CN 2382918 Y CN2382918 Y CN 2382918Y
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- valve
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- natural gas
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Abstract
The utility model provides a three-stage direct action type reversal pressure reducing valve for a compressed natural gas automobile, which comprises a valve body (1) with a gas inlet, a valve body (16) which is connected with the valve body (1) and provided with a gas outlet, a first stage pressure reducing throttle valve which is arranged in the valve body (1) and communicated with the gas inlet, a second stage pressure reducing throttle valve arranged in the valve body (16) and a third stage pressure reducing throttle valve communicated with the gas outlet, wherein, a gas passage (29) which makes the first stage pressure reducing throttle valve communicated with the second stage pressure reducing throttle valve is arranged on the valve bodies (1, 16); a gas passage (30) which makes the second stage pressure reducing throttle valve communicated with the third stage pressure reducing throttle valve is arranged on the valve body (16). The utility model has the advantage of stable pressure of natural gas output.
Description
The utility model relates to a kind of with the reduction valve of compressed natural gas (CNG) when making alternative motor fuels, particularly be a kind of three grades of reverse reduction valve of direct acting type that are used on the compressed natural gas automobile.
Two, three grades of expenditure and pressure valves in three grades of reduction valve of compressed natural gas automobile employing both at home and abroad are the forward reduction valve mostly, and the forward reduction valve is when the input bleed pressure changes greatly, output pressure just changes greatly, so cause along with natural gas pressure in the gas cylinder of natural gas automobile constantly reduces, the output pressure of reduction valve constantly changes thereupon, thereby make the air fuel ratio control accuracy of motor poor, the volume of forward reduction valve is big simultaneously, the manufacture cost height.
In view of above reason, the purpose of this utility model is in order to provide a kind of simple in structure, and volume is little, the reliability height, and low cost of manufacture, output pressure is stable is used for three grades of reverse reduction valve of direct acting type on the compressed natural gas automobile.
The purpose of this utility model is achieved like this:
The utility model reduction valve comprises the valve body (1) that contains the combustion gas inlet opening, the valve body that contains the combustion gas delivery outlet (16) that is connected with valve body (1), be loaded on the one-level that communicates with the combustion gas inlet opening decompression throttle valve in the valve body (1), be loaded on the second depressurized throttle valve in the valve body (16), three grades of decompression throttle valve that communicate with the combustion gas delivery outlet, be positioned at valve body (1,16) blast tube (29) that one-level decompression throttle valve and second depressurized throttle valve are communicated in, what be arranged in valve body (16) makes second depressurized throttle valve and three grades of blast tubes (30) that the decompression throttle valve communicates, at valve body (1,16) at one-level decompression throttle valve, the second depressurized throttle valve, on three grades of decompression throttle valve the voltage adjustment of on-load of adding assembly is arranged respectively, the control unit (referring to Fig. 1) that on valve body (16), has control blast tube (30) to close.
The shifting axle of closing blast tube is arranged in the above-mentioned control unit, the solenoid valve that moves of control shifting axle, be contained in and close spring (referring to Fig. 1) on the shifting axle.
Heating water channel (referring to Fig. 1) is arranged on the above-mentioned valve body (1).
The safety valve (referring to Fig. 1) that communicates with blast tube (29) is arranged on the above-mentioned valve body (1).
Referring to Fig. 1, during the utility model work, regulate the pressure regulating screw that respectively adds in the voltage adjustment of on-load assembly, pressure regulation loading element---pressure spring backs down the valve in the reduction valve, pressurized gas flow through the gap between valve and valve base and enter low-pressure cavity, act on the pressure regulation sensing element and produce balance with pressure spring power, when the low voltage terminal variation in pressure, the medium power that acts on the pressure regulation sensing element changes thereupon, valve opening is changed, to guarantee the low voltage terminal pressure stability, to heal greatly when the precompression of spring, valve is just opened more greatly, pressure regulation sensing element and pressure spring equilibrant are bigger, and promptly low voltage terminal pressure is bigger.
Compare with existing technology, the utlity model has following advantage:
1. the natural gas delivery pressure is stable, controls engine air-fuel ratio easily;
2. reliability height, rate of fault is little;
3. simple in structure, low cost of manufacture, volume is little;
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing:
Fig. 1 is the utility model structural representation.
Referring to Fig. 1, valve body 1 comprises main valve body 3 that contains combustion gas inlet opening 2 and the upper shell 4 that is threaded with the main valve body top.The valve 6 that contains valve base 5, cooperates with valve base, the one-level decompression throttle valve 8 of closing spring 7 are contained on the main valve body 3 and with the combustion gas inlet opening and communicate.The pressure regulation sensing element 10 that adds in the voltage adjustment of on-load assembly 9 is loaded in the upper shell, and adjusting screw 11 threaded one ends pass upper shell 4 tops and stretch in the upper shell 4, in adjusting screw 11 and 10 of pressure regulation sensing elements the pressure regulation loading element are housed---pressure spring 14.Heating water channel 15 is arranged on main valve body 3.Valve body 16 and valve body 1 connect as one by bolt.Valve body 16 comprises the main valve body 18 that contains combustion gas delivery outlet 17 and is positioned at main valve body 18 upper and lower ends and upper shell 19 that be threaded with main valve body, lower shell body 20.Three grades of decompression throttle valve 26 that contain valve base 21, valve 22, cut out the second depressurized throttle valve 23 of spring 12 and contain valve base 24, valve 25, cut out spring 13 are contained on the main valve body 18 and three grades of decompression throttle valve communicate with the combustion gas delivery outlet.In upper shell 19, lower shell body 20, be equipped with respectively with the corresponding structure of second depressurized throttle valve 23 and three grades of decompression throttle valve with add voltage adjustment of on-load assembly 9 identical add voltage adjustment of on-load assembly 27,28.The blast tube 29 that has the one-level of making decompression throttle valve and second depressurized throttle valve to communicate on valve body 1, valve body 16 has on the valve body 16 to make second depressurized throttle valve and three grades of blast tubes 30 that the decompression throttle valve communicates.The safety valve 31 that communicates with blast tube is housed on valve body 1.The shell 34 of the solenoid valve 33 in the control unit 32 stretches into main valve body 18 and is threaded with main valve body 18.The valve 37 that shifting axle 35 is loaded on the shell and the other end has all-in-one-piece with it to cooperate with valve base 36 on the main valve body 18.Closing spring 38 is enclosed within on the shifting axle and two ends withstand on shell and the valve.Solenoid valve drive shifting axle moves to be regulated blast tube 30 output gas flows or closes blast tube 30.
Referring to Fig. 1, when high-pressure gas is arrived one-level decompression throttle valve 9 by the combustion gas inlet opening before, at pressure regulation sensing element 10 and loading element---under the effect of pressure spring 14, compressing valve 6 moves down, little gap appears in 6 on valve base 5 and valve, because little gap has throttling action, behind the decompression throttle valve to producing decompression phenomenon (its pressure relief value is mainly definite by pressure regulation sensing element, loading element and adjusting screw).Through post-decompression low-pressure fuel gas through blast tube arrive the decompression of second depressurized throttle valve again through three grades of decompression throttle valve after the output of combustion gas delivery outlet.
Claims (4)
1. be used for three grades of reverse reduction valve of direct acting type on the compressed natural gas automobile, it is characterized in that described reduction valve comprises the valve body (1) that contains the combustion gas inlet opening, the valve body that contains the combustion gas delivery outlet (16) that is connected with valve body (1), be loaded on the one-level that communicates with the combustion gas inlet opening decompression throttle valve in the valve body (1), be loaded on the second depressurized throttle valve in the valve body (16), three grades of decompression throttle valve that communicate with the combustion gas delivery outlet, be positioned at valve body (1,16) blast tube (29) that one-level decompression throttle valve and second depressurized throttle valve are communicated in, what be arranged in valve body (16) makes second depressurized throttle valve and three grades of blast tubes (30) that the decompression throttle valve communicates, at valve body (1,16) at one-level decompression throttle valve, the second depressurized throttle valve, on three grades of decompression throttle valve the voltage adjustment of on-load of adding assembly is arranged respectively, the control unit that on valve body (16), has control blast tube (30) to close.
2. three grades of reverse reduction valve of direct acting type that are used on the compressed natural gas automobile according to claim 1, it is characterized in that the shifting axle of closing blast tube (30) is arranged in the control unit, the solenoid valve that the control shifting axle moves is contained in the spring of cutting out on the shifting axle.
3. three grades of reverse reduction valve of direct acting type that are used on the compressed natural gas automobile according to claim 1 and 2 is characterized in that on the valve body (1) the heating water channel being arranged.
4. three grades of reverse reduction valve of direct acting type that are used on the compressed natural gas automobile according to claim 1 and 2 is characterized in that the safety valve that communicates with blast tube (29) is arranged on the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99232263 CN2382918Y (en) | 1999-08-06 | 1999-08-06 | Three stage directly function reversal pressure reducing valve for compressed natural gas automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99232263 CN2382918Y (en) | 1999-08-06 | 1999-08-06 | Three stage directly function reversal pressure reducing valve for compressed natural gas automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2382918Y true CN2382918Y (en) | 2000-06-14 |
Family
ID=34020980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99232263 Expired - Fee Related CN2382918Y (en) | 1999-08-06 | 1999-08-06 | Three stage directly function reversal pressure reducing valve for compressed natural gas automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2382918Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100338383C (en) * | 2002-10-10 | 2007-09-19 | 日产自动车株式会社 | Excess pressure relief system for tank |
| WO2011018036A1 (en) * | 2009-08-12 | 2011-02-17 | 中原特种车辆有限公司 | Pressure reducing system for fuel gas and natural gas dewaxing vehicle |
| CN103016952A (en) * | 2012-12-29 | 2013-04-03 | 天台县铭通机械有限公司 | Automatic gas source distributor with safety function |
| CN104405939A (en) * | 2014-11-14 | 2015-03-11 | 宁波隆兴焊割科技股份有限公司 | Three-stage pressure reducer |
| CN106090363A (en) * | 2016-08-31 | 2016-11-09 | 常德翔宇设备制造有限公司 | Two-stage gas pressure reducing valve |
| CN106763943A (en) * | 2016-11-18 | 2017-05-31 | 上海空间推进研究所 | Series redundancy formula pressure-regulating device |
| CN107131334A (en) * | 2017-05-26 | 2017-09-05 | 张家港市鸿嘉数字科技有限公司 | A kind of effective carbon-dioxide pressure reducer |
| CN112747156A (en) * | 2021-01-12 | 2021-05-04 | 北京卫星制造厂有限公司 | High-precision large-pressure-reduction-ratio automatic pressure-regulating gas pressure-stabilizing pressure-reducing combined valve |
| CN114688324A (en) * | 2022-03-24 | 2022-07-01 | 浙江大学 | Hydrogen supply combination valve with flow regulation and pressure stabilization functions |
-
1999
- 1999-08-06 CN CN 99232263 patent/CN2382918Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100338383C (en) * | 2002-10-10 | 2007-09-19 | 日产自动车株式会社 | Excess pressure relief system for tank |
| WO2011018036A1 (en) * | 2009-08-12 | 2011-02-17 | 中原特种车辆有限公司 | Pressure reducing system for fuel gas and natural gas dewaxing vehicle |
| CN103016952A (en) * | 2012-12-29 | 2013-04-03 | 天台县铭通机械有限公司 | Automatic gas source distributor with safety function |
| CN104405939A (en) * | 2014-11-14 | 2015-03-11 | 宁波隆兴焊割科技股份有限公司 | Three-stage pressure reducer |
| CN104405939B (en) * | 2014-11-14 | 2017-09-29 | 宁波隆兴焊割科技股份有限公司 | A kind of three-level pressure reducer |
| CN106090363A (en) * | 2016-08-31 | 2016-11-09 | 常德翔宇设备制造有限公司 | Two-stage gas pressure reducing valve |
| CN106763943A (en) * | 2016-11-18 | 2017-05-31 | 上海空间推进研究所 | Series redundancy formula pressure-regulating device |
| CN107131334A (en) * | 2017-05-26 | 2017-09-05 | 张家港市鸿嘉数字科技有限公司 | A kind of effective carbon-dioxide pressure reducer |
| CN112747156A (en) * | 2021-01-12 | 2021-05-04 | 北京卫星制造厂有限公司 | High-precision large-pressure-reduction-ratio automatic pressure-regulating gas pressure-stabilizing pressure-reducing combined valve |
| WO2022151818A1 (en) * | 2021-01-12 | 2022-07-21 | 北京卫星制造厂有限公司 | High-precision and large-pressure-reduction-ratio automatic pressure-regulating gas pressure-stabilizing and pressure-reducing combined valve |
| CN114688324A (en) * | 2022-03-24 | 2022-07-01 | 浙江大学 | Hydrogen supply combination valve with flow regulation and pressure stabilization functions |
| CN114688324B (en) * | 2022-03-24 | 2022-11-18 | 浙江大学 | Hydrogen supply combination valve with flow regulation and pressure stabilization functions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |