CN102777646A - Vehicular compressed natural gas bottle flow-limiting valve - Google Patents
Vehicular compressed natural gas bottle flow-limiting valve Download PDFInfo
- Publication number
- CN102777646A CN102777646A CN2012102471630A CN201210247163A CN102777646A CN 102777646 A CN102777646 A CN 102777646A CN 2012102471630 A CN2012102471630 A CN 2012102471630A CN 201210247163 A CN201210247163 A CN 201210247163A CN 102777646 A CN102777646 A CN 102777646A
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- China
- Prior art keywords
- valve
- gas channel
- current limliting
- limiting valve
- natural gas
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Abstract
The invention relates to a vehicular compressed natural gas bottle flow-limiting valve, which comprises a valve body, and a gas channel arranged inside the valve body, wherein a flow limiting valve is arranged inside the gas channel; a blind hole is arranged at the lower part of the flow limiting valve and the side part is provided with a ventilating hole communicated with the gas channel and the blind hole, and the corresponding part of the flow limiting valve and the gas channel is provided with a sealing surface for sealing the gas channel. Due to existence of the flow limiting valve, a response is made according to saltation of the pressure in the gas channel of the valve, so that the flow limiting valve moves to form seal together with the gas channel, thereby ensuring that the natural gas does not leak too much and avoiding energy loss; and meanwhile, the use safety is also ensured, and precious time is brought about for maintenance. Furthermore, the seal disclosed by the invention is hard seal, and has the function of limiting the flow but not blocking. Transition work of a corresponding device is also achieved when the safety is ensured, so that the bottle valve disclosed by the invention is safe and reliable.
Description
Technical field
The present invention relates to a kind of valve of compressed natural gas used as vehicle fuel cylinder valve class.
Background technique
Valve is the device of rock gas break-make in course of conveying, and its reliability directly affects the safety of corresponding intrument; As the existing valve one of which opening and closing that realize valve through rotation; But it can not initiatively be adjusted when meeting some special circumstances; As 1) break or cylinder valve connection mouth when loosening when the connecting pipeline of cylinder valve and motor, as do not have artificial operation, valve still is in opening state; Thereby cause rock gas to leak too much, even therefore cause the accident.
Summary of the invention
The present invention is directed to above-mentioned defective, purpose is to provide a kind of have automatic adjustment, simple in structure and service-strong compressed natural gas used as vehicle fuel bottle flow-limiting valve.
The technological scheme that adopts of the present invention is for this reason: the present invention includes valve body, be arranged on the gas channel in the valve body, be provided with the current limliting valve in the gas channel, current limliting valve bottom is offered a blind hole and is offered the vent that is communicated with gas channel and blind hole at its sidepiece; Current limliting valve and gas channel correspondence portion are provided with the sealing surface with the gas channel sealing.
Be provided with the spring of support limit valve in the said gas channel, the spring upper and lower end is separately positioned on the boss that is formed by gas channel, current limliting valve.
Said current limliting valve upper end portion is a male cone (strobilus masculinus), and gas channel top is corresponding is provided with the inner conical surface corresponding with said male cone (strobilus masculinus).
Current limliting valve and gas channel be sealed into hard sealing.
Locking nut is established in the gas channel lower end, and said current limliting valve is supported on the locking nut.
Advantage of the present invention is: the present invention is owing to there is the existence of current limliting valve; Can make a response according to the sudden change of valve gas channel pressure; Make the current limliting valve movable, thereby guarantee that rock gas seldom leaks, avoid the loss of the energy so that it becomes sealing with the gas tunnel-shaped; While has also guaranteed safe in utilization, for maintenance has brought valuable time; Further of the present inventionly be sealed into hard sealing, have current limliting and the function do not blocked, when guaranteeing safety, also realized the transition work of corresponding device, promptly safety is reliable again thereby make cylinder valve of the present invention.
Description of drawings
Fig. 1, Fig. 2 are the structural representation of current limliting valve of the present invention under two kinds of different conditions.
1 is that valve body, 2 is that current limliting valve, 3 is that spring, 4 is locking nut among the figure.
Embodiment
Below in conjunction with accompanying drawing the present invention is made further detailed description.
The present invention includes valve body 1, current limliting valve 2, spring 3, locking nut 4 compositions.When normal use, the gas flow rate in cylinder valve valve body 1 gas channel is unhappy, and the pressure difference of current limliting valve about in the of 2 is very little, and current limliting valve 2 is failure to actuate, and under spring 3 effects, is held open state (like Fig. 1).When the connecting pipeline of cylinder valve and motor breaks or cylinder valve connection mouth when loosening; Gas channel gas in the cylinder valve valve body 1 quickens to flow, and the pressure reduction of current limliting valve 2 front and back increases suddenly, 2 actions (like Fig. 2) of current limliting valve; Flow is die-offed, and too much causes the accident thereby avoid rock gas to leak.When car engine start or quicken instantaneous; The pressure reduction of current limliting valve 2 front and back also increases suddenly, but because current limliting valve 2 sealing surfaces are that hard sealing also is face seal simultaneously, receives the effect of spring 3 spring forces in addition; So have the performance that a current limliting is not blocked; Still have a certain amount of gas communication in the system, motor is not stopped working because of cutout, promptly safety is reliable again thereby make cylinder valve of the present invention.
Claims (5)
1. compressed natural gas used as vehicle fuel bottle flow-limiting valve is characterized in that, comprises valve body, is arranged on the gas channel in the valve body, is provided with the current limliting valve in the gas channel, and current limliting valve bottom is offered a blind hole and offered the vent that is communicated with gas channel and blind hole at its sidepiece; Current limliting valve and gas channel correspondence portion are provided with the sealing surface with the gas channel sealing.
2. compressed natural gas used as vehicle fuel bottle flow-limiting valve according to claim 1 is characterized in that, is provided with the spring of support limit valve in the said gas channel, and the spring upper and lower end is separately positioned on the boss that is formed by gas channel, current limliting valve.
3. compressed natural gas used as vehicle fuel bottle flow-limiting valve according to claim 1 is characterized in that, said current limliting valve upper end portion is a male cone (strobilus masculinus), and gas channel top is corresponding is provided with the inner conical surface corresponding with said male cone (strobilus masculinus).
4. according to claim 1 or 3 described compressed natural gas used as vehicle fuel bottle flow-limiting valves, it is characterized in that, current limliting valve and gas channel be sealed into hard sealing.
5. compressed natural gas used as vehicle fuel bottle flow-limiting valve according to claim 1 is characterized in that locking nut is established in the gas channel lower end, and said current limliting valve is supported on the locking nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102471630A CN102777646A (en) | 2012-07-17 | 2012-07-17 | Vehicular compressed natural gas bottle flow-limiting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102471630A CN102777646A (en) | 2012-07-17 | 2012-07-17 | Vehicular compressed natural gas bottle flow-limiting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102777646A true CN102777646A (en) | 2012-11-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102471630A Pending CN102777646A (en) | 2012-07-17 | 2012-07-17 | Vehicular compressed natural gas bottle flow-limiting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102777646A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202206A (en) * | 2015-11-04 | 2015-12-30 | 江南工业集团有限公司 | Low-temperature cutting-off flow-limiting valve |
| CN105221771A (en) * | 2015-10-29 | 2016-01-06 | 江南工业集团有限公司 | A kind of low temperature cut-off flow-limiting valve |
| WO2017219613A1 (en) * | 2016-06-22 | 2017-12-28 | 中国矿业大学 | Water-saving and efficiency-increasing hydraulic cutting pick |
-
2012
- 2012-07-17 CN CN2012102471630A patent/CN102777646A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221771A (en) * | 2015-10-29 | 2016-01-06 | 江南工业集团有限公司 | A kind of low temperature cut-off flow-limiting valve |
| CN105202206A (en) * | 2015-11-04 | 2015-12-30 | 江南工业集团有限公司 | Low-temperature cutting-off flow-limiting valve |
| CN105202206B (en) * | 2015-11-04 | 2018-05-11 | 江南工业集团有限公司 | Low temperature ends flow-limiting valve |
| WO2017219613A1 (en) * | 2016-06-22 | 2017-12-28 | 中国矿业大学 | Water-saving and efficiency-increasing hydraulic cutting pick |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121114 |