CN2833266Y - Stop valve for cylinder - Google Patents
Stop valve for cylinder Download PDFInfo
- Publication number
- CN2833266Y CN2833266Y CN 200520010139 CN200520010139U CN2833266Y CN 2833266 Y CN2833266 Y CN 2833266Y CN 200520010139 CN200520010139 CN 200520010139 CN 200520010139 U CN200520010139 U CN 200520010139U CN 2833266 Y CN2833266 Y CN 2833266Y
- Authority
- CN
- China
- Prior art keywords
- valve
- stop valve
- valve core
- sealing
- pad
- 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 - Fee Related
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- Mechanically-Actuated Valves (AREA)
Abstract
The utility model discloses a stop valve for an air cylinder, which is composed of a nut, screws, a valve rod, a sealing washer, a handle spanner, a manual stop valve core, a sealing valve pad, a valve body with a three-way structure, an automatic valve core, a return spring, a screw bolt, a safety valve, a metal push rod, etc., wherein the upper end head of the automatic valve core is provided with a round table structure corresponding to a valve opening. When the automatic valve core is closed, the upper end surface of the automatic valve core is leveled with the end surface of the valve opening. The middle part of the sealing valve pad is provided with the metal push rod, the upper end of the metal push rod extends in the manual stop valve core and the lower end of the metal push rod is beyond the lower end surfaces of the sealing valve pad and the manual stop valve core. The metal push rod and the automatic valve core are positioned in the same shaft line. The scheme is used, and the stress of the original sealing valve pad is changed into the stress of the metal push rod when the automatic valve core needs to be pushed. Thereby, the deformation and the damage of the sealing valve pad can be effectively avoided and the sealing performance and the service life of the sealing washer can be ensured to cause the performance of the whole stop valve to become reliable.
Description
Technical field
The utility model relates to a kind of stop valve, especially the gas cylinder stop valve of bottled gas such as compressed natural gas, oxygen.
Background technique
At present, in the industry of gases such as bottled rock gas, using maximum is compressed natural gas used as vehicle fuel cylinder valve and oxygen cylinder valve, and they all are stop valve or ball valve.These valves are two logical or three-port structures, open or close the air valve passage by handwheel or handle spanner, when the safe spool of this air valve surpasses safe bleed off pressure in the gas cylinder internal pressure, can rush down pressure automatically, guarantee gas cylinder safely, but when in a single day the pipeline that connects gas cylinder takes place to reveal, because this cylinder valve does not have the passage of dying automatically, therefore for being filled with inflammable gas or gas cylinder poisonous, harmful gas, can not in time control leakage, Yi Fashengyin reveals and danger such as the fire that causes, blast.It is the multi-functional gas cylinder stop valve of three-port structure that a kind of valve body is arranged, automatic spool is installed in the lower through-hole of valve body, is set with return spring on the spool automatically, when pipe breakage that connects gas cylinder or gas leakage, automatic spool is compression retracteding position spring automatically, close port; After treating that hidden danger is eliminated, but the Joystick spanner makes the sealing valve pad of hand stop valve in-core back down automatic spool, makes stop valve open-minded again.Because the sealing valve pad is made by flexible material, poor-performing not only when backing down automatic spool, and easily deform, damage, thereby lose sealing function.
The model utility content
At the defective and the deficiency of prior art, the purpose of this utility model is to provide the gas cylinder stop valve of a kind of reliable performance, good airproof performance.
The technical solution of the utility model is as follows: a kind of gas cylinder stop valve, in the lower through-hole of the valve body of three-port structure, automatic spool is installed, and by the bolt location, be set with return spring on the spool automatically; The top of the valve body nut that has been threaded, the upper end suit handle spanner of this nut, through screw valve rod is housed in the nut, the hand stop valve in-core is stretched in the lower end of valve rod, the hand stop valve core is threaded in the valve body, and be positioned at above the valve body triple channel, be inlaid with the sealing valve pad in the lower end surface of hand stop valve core, its key is: the upper tip of described automatic spool is the frustum cone structure that adapts with valve port, metallic carrier rod is equipped with at middle part at the sealing valve pad, the hand stop valve in-core is stretched in the upper end of metallic carrier rod, and its lower end exceeds the lower end surface of sealing valve pad and hand stop valve core, and this metallic carrier rod is positioned on the same axis with automatic spool.
Described metallic carrier rod is a bolt, and the lower end surface of bolt is concordant with the lower end surface of sealing valve pad and hand stop valve core, and the round platform of spool upper tip has extended upward boss accordingly automatically.
Adopt such scheme, when needs backed down automatic spool, it was stressed to change metallic carrier rod into by original sealing valve pad, thereby had effectively avoided distortion, the damage of sealing valve pad, ensured the sealing and the working life of seal washer, made that the performance of whole stop valve is more reliable.
Description of drawings
Fig. 1 is a structural representation of the present utility model, also is first embodiment of the present utility model.
Fig. 2 is second an embodiment's of the present utility model structural representation.
Fig. 3 is the plan view of Fig. 1.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
Embodiment 1, as Fig. 1, shown in Figure 3, the utility model is by nut 1, screw 2, valve rod 3, seal washer 4, handle spanner 5, hand stop valve core 6, sealing valve pad 7, the valve body 8 of three-port structure, automatic spool 9, return spring 10, bolt 11, safety valve 13, metallic carrier rod 15 parts such as grade are formed, the top of valve body 8 nut 1 that has been threaded wherein, the upper end suit handle spanner 5 of this nut 1, through screw 2 valve rod 3 is housed in the nut 1, between valve rod 3 and the nut 1 seal washer 4 is arranged, and the lower end of valve rod 3 is stretched in the hand stop valve core 6, hand stop valve core 6 is threaded in the valve body 8, and be positioned at valve body 8 triple channel top, be inlaid with sealing valve pad 7 in the lower end surface of hand stop valve core 6; Automatic spool 9 is installed in the lower through-hole of described valve body 8, by bolt 11 location, automatically there is step-shaped hole 14 at spool 9 centers, automatically be set with return spring 10 on the spool 9, the upper tip of described automatic spool 9 is the frustum cone structure that adapts with valve port 12, its upper-end surface was concordant with the end face of valve port 12 when spool 9 was closed automatically, metallic carrier rod 15 is equipped with at middle part at sealing valve pad 7, the upper end of metallic carrier rod 15 is stretched in the hand stop valve core 6, its lower end exceeds the lower end surface of sealing valve pad 7 and hand stop valve core 6, and this metallic carrier rod 15 is positioned on the same axis with automatic spool 9.
Working principle: with the suction port of stop valve be valve body lower through-hole be connected on the gas cylinder air outlet, open gas cylinder valve, stop valve upper handle spanner 5 is placed full-gear, the gas in the gas cylinder enters in the stop valve.When stop valve is worked under normal flow rate, automatically spool 9 is in full-gear, when pipe breakage that connects gas cylinder or gas leakage, pressure difference in stop valve outlet end pressure and the gas cylinder surpasses design load, the output flow that is stop valve surpasses design load, and at this moment spool 9 is at action of pressure lower compression return spring 10 automatically, and the round platform small end head of spool 9 stretches in the valve port 12 automatically, valve port 12 is closed, and stop valve quits work.After treating that hidden danger is eliminated, handle spanner 5 is placed half-open position, at this moment metallic carrier rod 15 is backed down automatic spool 9, makes stop valve be in normal opening state, and when handle spanner 5 is in the contract fully position, hand stop valve core 6 will be closed the inlet and outlet passage.
Claims (2)
1, a kind of gas cylinder stop valve is equipped with automatic spool (9) in the lower through-hole of the valve body (8) of three-port structure, by bolt (11) location, be set with return spring (10) on the spool (9) automatically; The top of valve body (8) nut (1) that has been threaded, the upper end suit handle spanner (5) of this nut (1), through screw (2) valve rod (3) is housed in the nut (1), the lower end of valve rod (3) is stretched in the hand stop valve core (6), hand stop valve core (6) is threaded in the valve body (8), and be positioned at above valve body (8) triple channel, be inlaid with sealing valve pad (7) in the lower end surface of hand stop valve core (6), it is characterized in that: the upper tip of described automatic spool (9) is the frustum cone structure that adapts with valve port (12), metallic carrier rod (15) is equipped with at middle part at sealing valve pad (7), the upper end of metallic carrier rod (15) is stretched in the hand stop valve core (6), its lower end exceeds the lower end surface of sealing valve pad (7) and hand stop valve core (6), and this metallic carrier rod (15) is positioned on the same axis with automatic spool (9).
2, gas cylinder stop valve according to claim 1, it is characterized in that: described metallic carrier rod (15) is bolt (16), the lower end surface of bolt (16) is concordant with the lower end surface of sealing valve pad (7) and hand stop valve core (6), and the round platform of spool (9) upper tip has extended upward boss (17) accordingly automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520010139 CN2833266Y (en) | 2005-10-19 | 2005-10-19 | Stop valve for cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520010139 CN2833266Y (en) | 2005-10-19 | 2005-10-19 | Stop valve for cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2833266Y true CN2833266Y (en) | 2006-11-01 |
Family
ID=37197579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520010139 Expired - Fee Related CN2833266Y (en) | 2005-10-19 | 2005-10-19 | Stop valve for cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2833266Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015656A (en) * | 2016-06-29 | 2016-10-12 | 中材高新成都能源技术有限公司 | Overcurrent protection integrated valve |
| CN106555893A (en) * | 2017-01-09 | 2017-04-05 | 黄福成 | Combustion gas automatic stop valve |
| CN107013727A (en) * | 2017-04-26 | 2017-08-04 | 上海百图低温阀门有限公司 | The automobile-used cryogenic insulated cylinder safety device control valves of LNG |
| CN111188907A (en) * | 2020-01-22 | 2020-05-22 | 武汉船用机械有限责任公司 | Exhaust joint |
-
2005
- 2005-10-19 CN CN 200520010139 patent/CN2833266Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015656A (en) * | 2016-06-29 | 2016-10-12 | 中材高新成都能源技术有限公司 | Overcurrent protection integrated valve |
| CN106555893A (en) * | 2017-01-09 | 2017-04-05 | 黄福成 | Combustion gas automatic stop valve |
| CN107013727A (en) * | 2017-04-26 | 2017-08-04 | 上海百图低温阀门有限公司 | The automobile-used cryogenic insulated cylinder safety device control valves of LNG |
| CN107013727B (en) * | 2017-04-26 | 2023-03-10 | 上海百图低温阀门有限公司 | LNG vehicle low-temperature heat-insulation gas cylinder safety device control valve |
| CN111188907A (en) * | 2020-01-22 | 2020-05-22 | 武汉船用机械有限责任公司 | Exhaust joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061101 Termination date: 20131019 |