CN2615459Y - Compressed natural gas pipeline overflow protection valve - Google Patents
Compressed natural gas pipeline overflow protection valve Download PDFInfo
- Publication number
- CN2615459Y CN2615459Y CN 03233002 CN03233002U CN2615459Y CN 2615459 Y CN2615459 Y CN 2615459Y CN 03233002 CN03233002 CN 03233002 CN 03233002 U CN03233002 U CN 03233002U CN 2615459 Y CN2615459 Y CN 2615459Y
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- Prior art keywords
- valve
- natural gas
- compressed natural
- gas pipeline
- joint
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Abstract
The utility model relates to a compressed natural gas pipeline overflow protection valve which is characterized in that the lower part of a valve body 3 is screwed in a hollow adaptor 1 through internal threads; a cylindrical cavity is arranged in the middle of the valve body 3; the interior of the cylindrical cavity is provided with a movable valve core 4 with a vent hole. A conical valve base 7 is arranged on the movable valve core 4. A valve spring 5 is sheathed outside the movable valve core 4. A spout hole 6 is arranged on the movable valve core 4. The upside of the cylindrical cavity is coaxially provided with a degassing circular slot and a hollow channel which is perpendicular to the degassing circular slot. The interior of the degassing circular slot is provided with a reset degassing bolt 9. The outer surface of the hollow channel is provided with threads. The utility model is arranged on a bottle opening valve 13 or near the tube of a high pressure gas cylinder. Once the pipelines are broken or damaged, according to pressure differences and gas flow which passes through the device, a gas drain of a gas bottle is automatically closed. Therefore, the compressed natural gas pipeline overflow protection valve obtains the purposes that the high-pressure gas leakage is avoided, the operating fail-safe reliability is increased, and rates of casualty loss are decreased.
Description
One, technical field:
The utility model relates to a kind of automobile that is used for, and the compressed natural gas pipeline overcurrent protection valve that plays automatic protective action on the storage facility of various pressurized gas.
Two, technical background:
At present, in the structural design of rock gas gas cylinder, set stop valve is hand stop valve, must just can reach the effect of open and close with human control, and, in the using process of gas-fueled vehicles, when contingency occurring, if cause pressure duct to break or joint pitches, just there are a large amount of high-pressure natural gas bodies sprays to let out, the scene of the accident will be assembled a large amount of inflammable gass in the utmost point the short time, in case contact burning things which may cause a fire disaster, must lead to major disaster, this makes the matter worse beyond doubt for car accident, and consequence is more serious.According to investigations, at home, the major event that a lot of automobile with compressed natural gas burn because of natural gas leaking has taken place outward.In the accident of two rock gas passenger vehicles overturning burnings of on February 12nd, 1999 and generation on October 13 calendar year 2001, dead and 6 dead 9 tragedies of hindering of 29 people have just been caused as the Chongqing City.According to expert group as can be seen: though the overturning pyrophoricity accident is not caused by rock gas to the analysis suggestion of accident; but because of rock gas gas storage gas system does not have protective gear effectively; cause a large amount of sprays of high-pressure natural gas in the gas cylinder to be let out and participate in burning, thereby increased the weight of the serious consequence of accident.If can guarantee natural gas cylinder when pipe breakage, to close its air outlet automatically high-pressure natural gas is leaked, just can alleviate the disaster degree of accident.
Three, summary of the invention:
The purpose of this utility model provides a kind of compressed natural gas pipeline overcurrent protection valve that links to each other with gas cylinder on the automobile with compressed natural gas that is applicable to; Solve when pipe breakage or damage the problem that high pressure vapour bottle can not be closed the gas cylinder air outlet automatically.
Concrete scheme of the present utility model: a kind of compressed natural gas pipeline overcurrent protection valve, comprise joint, valve body, valve spring, valve seat, return bleeder screw, it is characterized in that: the lower end of valve body is screwed into hollow joint by internal thread, the center of valve body is a cylindrical chamber, at the indoor moving core of valve that the band vent is housed of cylindrical cavity, be provided with coniform valve base above the moving core of valve, be set with valve spring outside the moving core of valve, the moving core top of valve is provided with overflow hole; Above cylindrical chamber, have homoaxial venting circular groove and vertical with it groove, the return bleeder screw is housed in the circular groove, be provided with screw thread at the outer surface of groove in venting.
Adopt the beneficial effect of such scheme to be: can be by (just being connected in series this Protective valve on the bottleneck valve that is installed in gas cylinder or near the pipeline between gas cylinder air outlet and the former pipeline; former pipeline need not to do any change); when pipe breakage or damage; can be according to the gas flow and the pressure reduction of this Protective valve of flowing through; automatically the gas cylinder air outlet is closed; avoid pressurized gas to reveal thereby reach, improve safety in utilization, reduce the purpose of causality loss degree.This apparatus structure is simple, and is easy for installation.
Four, description of drawings:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is that the utility model is installed in gas cylinder 10 and with the annexation schematic representation between the air pipe 11.
Five, embodiment:
As shown in Figure 1: the utility model mainly is made up of joint 1, O shape circle 2, valve body 3, the moving core 4 of valve, valve spring 5, coniform valve base 7, O shape circle 8, return bleeder screw 9; The meaning of other numberings is among Fig. 1: overflow hole 6, gas cylinder 10, usefulness air pipe 11, bottleneck valve 12.Structure outline of the present utility model is: the lower end of valve body 3 is screwed into hollow joint 1 by internal thread, the center of valve body 3 is a cylindrical chamber, at the indoor moving core 4 of valve that the band vent is housed of cylindrical cavity, be provided with coniform valve base 7 in moving core 4 upper ends of valve, be set with valve spring 5 outside the moving core 4 of valve, moving core 4 upper ends of valve are provided with overflow hole 6; Above cylindrical chamber, have homoaxial venting circular groove and vertical with it groove, return bleeder screw 9 is housed in the circular groove, be provided with screw thread at the outer surface of groove in venting.
By Fig. 1 also as can be known: the hollow cavity of joint 1 communicates with the vent and the overflow hole 6 of the moving core 4 of valve.Overflow hole 6 is φ 0.1～φ 0.5mm.
As shown in Figure 1: return bleeder screw 9, and is sealed by O shape circle 8 in the venting circular groove of valve body 3 by screw fit.
As can be seen from Figure 1: the double headed roller outside thread of joint 1, the valve body 3 that links to each other with joint 1 is by joint 1 and O shape circle 2 location and sealing.
As shown in Figure 2: the utility model is connected with high pressure air cylinder valve 10 or directly is connected with near pipeline by joint 1, the outside thread of valve body 3 be connected with air pipe 11, the gap between the moving core 4 of valve and the coniform valve base 7 and the rigidity of valve spring 5 determines, the closing of valve moved core 4 by valve and be pressed onto on the coniform valve base 7 and realize.
In Fig. 2; Protective valve is a kind of one-way valve; it is installed in the bottleneck valve 12 of gas cylinder and with between the air pipe 11; one headgear of pipeline 11 is contained in the groove male end of valve body 3, and communicates with the Protective valve inner chamber, when pipe breakage or damage; the moving core 4 of valve is subjected to move right under the pressurized gas effect in gas cylinder 10; up to being pressed on the coniform valve base 7, thus the air vent on the valve body 3, and the high pressure natural gass in the cutoff high gas cylinder 10 leak.After Protective valve is closed, only need clockwise direction to unscrew bleeder screw 9, just can make Protective valve return to normal condition, and then tighten bleeder screw 9 counterclockwise.
Claims (5)
1, a kind of compressed natural gas pipeline overcurrent protection valve, comprise joint (1), valve body (3), valve spring (5), the moving core (4) of valve, it is characterized in that: the lower end of valve body (3) is screwed into hollow joint (1) by internal thread, the center of valve body (3) is a cylindrical chamber, at the indoor moving core (4) of valve that the band vent is housed of cylindrical cavity, top at the moving core (4) of valve is provided with coniform valve base (7), be set with valve spring (5) outside the moving core (4) of valve, valve moves core (4) top and is provided with overflow hole (6); Above cylindrical chamber, have homoaxial venting circular groove and vertical with it groove, return bleeder screw (9) is housed in the circular groove, be provided with screw thread at the outer surface of groove in venting.
2, compressed natural gas pipeline overcurrent protection valve according to claim 1 is characterized in that: the hollow cavity of joint (1) communicates with the vent and the overflow hole of the moving core (4) of valve.
3, compressed natural gas pipeline overcurrent protection valve according to claim 1, it is characterized in that: overflow hole (6) is φ 0.1～φ 0.5mm.
4, compressed natural gas pipeline overcurrent protection valve according to claim 1 is characterized in that: return bleeder screw (9), and is sealed by O shape circle (8) in the venting circular groove of valve body (3) by screw fit.
5, compressed natural gas pipeline overcurrent protection valve according to claim 1 is characterized in that: the double headed roller outside thread of joint (1), the valve body (3) that links to each other with joint (1) is by joint (1) and O shape circle (2) location and sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03233002 CN2615459Y (en) | 2003-01-23 | 2003-01-23 | Compressed natural gas pipeline overflow protection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03233002 CN2615459Y (en) | 2003-01-23 | 2003-01-23 | Compressed natural gas pipeline overflow protection valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2615459Y true CN2615459Y (en) | 2004-05-12 |
Family
ID=34248746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03233002 Expired - Lifetime CN2615459Y (en) | 2003-01-23 | 2003-01-23 | Compressed natural gas pipeline overflow protection valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2615459Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494166A (en) * | 2011-12-29 | 2012-06-13 | 珠海铂鸥卫浴用品有限公司 | Overflowing protective valve |
| CN102705546A (en) * | 2012-05-29 | 2012-10-03 | 江南工业集团有限公司 | Inserting-type emergency cut-off valve for liquefied natural gas cylinder |
| CN102720865A (en) * | 2012-06-19 | 2012-10-10 | 无锡宇吉科技有限公司 | Leakage protection valve for natural gas pipeline |
| US8576273B2 (en) | 2008-06-20 | 2013-11-05 | Huawei Device Co., Ltd. | Multipoint control unit cascaded system, communications method and device |
| CN114352744A (en) * | 2021-12-07 | 2022-04-15 | 中科首望无水染色智能装备(苏州)有限公司 | Self-sealing pressurizing and pressure relieving device |
-
2003
- 2003-01-23 CN CN 03233002 patent/CN2615459Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8576273B2 (en) | 2008-06-20 | 2013-11-05 | Huawei Device Co., Ltd. | Multipoint control unit cascaded system, communications method and device |
| CN102494166A (en) * | 2011-12-29 | 2012-06-13 | 珠海铂鸥卫浴用品有限公司 | Overflowing protective valve |
| CN102494166B (en) * | 2011-12-29 | 2013-03-27 | 珠海铂鸥卫浴用品有限公司 | Overflowing protective valve |
| WO2013097431A1 (en) * | 2011-12-29 | 2013-07-04 | 珠海铂鸥卫浴用品有限公司 | Overflow protection valve |
| US9097352B2 (en) | 2011-12-29 | 2015-08-04 | Zhuhai Bow Kitchen & Bath Products Co., Ltd. | Relief valve for overload protection |
| CN102705546A (en) * | 2012-05-29 | 2012-10-03 | 江南工业集团有限公司 | Inserting-type emergency cut-off valve for liquefied natural gas cylinder |
| CN102720865A (en) * | 2012-06-19 | 2012-10-10 | 无锡宇吉科技有限公司 | Leakage protection valve for natural gas pipeline |
| CN114352744A (en) * | 2021-12-07 | 2022-04-15 | 中科首望无水染色智能装备(苏州)有限公司 | Self-sealing pressurizing and pressure relieving device |
| CN114352744B (en) * | 2021-12-07 | 2024-04-12 | 中科首望无水染色智能装备(苏州)有限公司 | Self-sealing pressurizing and pressure releasing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA AUTOMOTIVE ENGINEERING RESEARCH INSTITUTE Free format text: FORMER NAME: CHONGQING AUTOMOBILE RESEARCH INSTITUTE Owner name: CHINA AUTOMOTIVE ENGINEERING RESEARCH INSTITUTE CO Free format text: FORMER NAME: CHINA AUTOMOTIVE ENGINEERING RESEARCH INSTITUTE |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 400039 Chongqing Jiulongpo Chen Ping Tian Cun in No. 101 Patentee after: China Automotive Engineering Research Institute Co.,Ltd. Address before: 400039 Chongqing Jiulongpo Chen Ping Tian Cun in No. 101 Patentee before: China Automotive Engineering Research Institute Address after: 400039 Chongqing Jiulongpo Chen Ping Tian Cun in No. 101 Patentee after: CHINA AUTOMOTIVE ENGINEERING Research Institute Address before: 400039 Chongqing Jiulongpo Chen Ping Tian Cun in No. 101 Patentee before: Chongqing Automobile Research Institute |
|
| CP03 | Change of name, title or address |
Address after: 401122 Chongqing district by the North District of Chongqing Jin Avenue, No. 9 Patentee after: China Automotive Engineering Research Institute Co.,Ltd. Address before: 400039 Chongqing Jiulongpo Chen Ping Tian Cun in No. 101 Patentee before: China Automotive Engineering Research Institute Co.,Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130123 Granted publication date: 20040512 |