CN202733101U - Compressed natural gas cylinder flow-limiting valve for vehicle - Google Patents
Compressed natural gas cylinder flow-limiting valve for vehicle Download PDFInfo
- Publication number
- CN202733101U CN202733101U CN 201220346095 CN201220346095U CN202733101U CN 202733101 U CN202733101 U CN 202733101U CN 201220346095 CN201220346095 CN 201220346095 CN 201220346095 U CN201220346095 U CN 201220346095U CN 202733101 U CN202733101 U CN 202733101U
- Authority
- CN
- China
- Prior art keywords
- valve
- gas channel
- flow
- limiting valve
- compressed natural
- 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
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Abstract
The utility model relates to a compressed natural gas cylinder flow-limiting valve for a vehicle. The compressed natural gas cylinder flow-limiting valve comprises a valve body and a gas channel formed in the valve body, wherein a flow-limiting valve is arranged in the gas channel; the lower part of the flow-limiting valve is provided with a blind hole, and the side part of the flow-limiting valve is provided with a vent hole which is communicated with the gas channel and the blind hole; and a part of the flow-limiting valve, which corresponds to the gas channel is provided with a sealing surface for sealing the gas channel. In the presence of the flow-limiting valve, reactions can be made according to sudden change of the pressure of the valve gas channel, and the flow-limiting valve is moved for sealing the flow-limiting valve with the gas channel, so that natural gas is prevented from leaking excessively, the consumption of energy is avoided, the use safety is ensured simultaneously, and precious time is saved for maintenance; and furthermore, the seal of the compressed natural gas cylinder limiting valve is a hard seal, the function of limiting flow without blocking flow is realized, and transition work of corresponding devices is realized while safety is ensured, so that the cylinder valve is safe and reliable.
Description
Technical field
The utility model relates to a kind of valve of compressed natural gas bottle valve for cars 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; It generally is the opening and closing that realize valve by rotation for existing valve, but it can not initiatively be adjusted when meeting some special circumstances, such as 1) break or cylinder valve connection mouth when loosening when the connecting pipeline of cylinder valve and motor, as not having artificial operation, valve still is in opening state, thereby cause rock gas to leak too much, even therefore cause the accident.
The model utility content
The utility model is for defects, and 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 technical solution adopted in the utility model is for this reason: the utility model comprises 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 of connection gas channel and blind hole at its sidepiece; Current limliting valve and gas channel correspondence section are provided with the sealing surface with the gas channel sealing.
Be provided with the spring of support limit valve in the described gas channel, the spring upper and lower end is separately positioned on the boss that is formed by gas channel, current limliting valve.
Described current limliting valve upper end portion is male cone (strobilus masculinus), and gas channel top is corresponding is provided with the inner conical surface corresponding with described 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 described current limliting valve is supported on the locking nut.
The utility model has the advantages that: the utility model is because the existence of current limiting valve, can make a response according to the sudden change of valve gas channel pressure, make the activity of current limliting valve so that it becomes sealing with the gas tunnel-shaped, thereby guarantee that rock gas seldom leaks, avoid the loss of the energy, simultaneously also guaranteed use safety, for maintenance has brought the valuable time; Further of the present utility modelly be sealed into hard sealing, have current limliting and the function do not blocked, also realized the transition work of corresponding device when guaranteeing safety, namely safety is reliable again thereby make the utility model cylinder valve.
Description of drawings
Fig. 1, Fig. 2 are the structural representation of current limliting valve of the present utility model 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
The utility model is described in further detail below in conjunction with accompanying drawing.
The utility model comprises that valve body 1, current limliting valve 2, spring 3, locking nut 4 form.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 is held open state (such as Fig. 1) under spring 3 effects.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 accelerates to flow, and the pressure reduction of current limliting valve 2 front and back increases suddenly, 2 actions (such as 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 accelerate 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 the hard sealing while also is the face sealing, be subject in addition the effect of spring 3 spring forces, 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, namely safety is reliable again thereby make the utility model cylinder valve.
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 of connection gas channel and blind hole at its sidepiece; Current limliting valve and gas channel correspondence section 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 described 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, described current limliting valve upper end portion is male cone (strobilus masculinus), and gas channel top is corresponding is provided with the inner conical surface corresponding with described 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 described current limliting valve is supported on the locking nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220346095 CN202733101U (en) | 2012-07-17 | 2012-07-17 | Compressed natural gas cylinder flow-limiting valve for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220346095 CN202733101U (en) | 2012-07-17 | 2012-07-17 | Compressed natural gas cylinder flow-limiting valve for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202733101U true CN202733101U (en) | 2013-02-13 |
Family
ID=47658802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220346095 Expired - Lifetime CN202733101U (en) | 2012-07-17 | 2012-07-17 | Compressed natural gas cylinder flow-limiting valve for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202733101U (en) |
-
2012
- 2012-07-17 CN CN 201220346095 patent/CN202733101U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |