CN203797088U - Emergency cut-off valve - Google Patents
Emergency cut-off valve Download PDFInfo
- Publication number
- CN203797088U CN203797088U CN201420196962.4U CN201420196962U CN203797088U CN 203797088 U CN203797088 U CN 203797088U CN 201420196962 U CN201420196962 U CN 201420196962U CN 203797088 U CN203797088 U CN 203797088U
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- China
- Prior art keywords
- valve
- valve rod
- top cover
- piston cylinder
- piston
- 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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Abstract
The utility model relates to an emergency cut-off valve which comprises a valve body (1), a valve seat (2), a valve clack (3), a valve rod (4), a long neck valve cover (5) and a pneumatic control mechanism, wherein the lower end of the valve rod (4) is fixedly connected with the valve clack (3); the valve clack (3) is matched with the valve seat (2); the pneumatic control mechanism is connected with the upper end of the valve rod (4) and comprises an actuator (6), a piston member (7), a return spring (8) and a top cover (9), a piston cylinder (16) is arranged at the upper part of the actuator (6), the top cover (9) is mounted at the top of the piston cylinder (16), and the return spring (8) is mounted between the top cover (9) and the piston member (7); an air source interface (12) and a fusible plug (13) are also arranged on the side wall of the bottom of the piston cylinder (16). The emergency cut-off valve has the advantages of improved service performance, convenience for use by a user, high applicability to low-temperature environment, convenience for product maintenance, stable and reliable work and high safety.
Description
Technical field
The utility model relates to a kind of valve, particularly a kind of Emergeny Cutoff Valves.
Background technique
Emergeny Cutoff Valves is called again safety cut-off valve, refers to when running into emergency case, and valve can close rapidly or open, and avoids the generation causing the accident.Emergeny Cutoff Valves has splendid technical performance, low-load loss and high reliability.Be applicable to the inflammable gass such as coal gas, rock gas and liquefied petroleum gas (LPG), be widely used in the safety installations of gas transmission pipeline net work system, gas thermal energy factory floor, gas fired boiler room and house shelter.
Chinese patent 200920257243.8 discloses pneumatic rapid cut-off valve, comprises selector valve, cylinder and stop valve, and when abnormal urgency appears in pipeline, in selector valve control cylinder, the motion of piston, makes stop valve fast shut-off, protective system and device security.But, under stop valve full-gear, if selector valve control system breaks down or have a power failure suddenly or downstream loine pressure sharply rises and when medium occurring flowing backwards, cannot cut off pipeline, losing the protective action to system and equipment, working stability is poor.
Emergeny Cutoff Valves, under low temperature environment, such as cutting off circulation medium on cryogenic tank, tank car and tank car, can cut off medium while breaking down in time, is widely used in LNG, liquid ethylene and other cryogenic media.Work as excess Temperature, have the hidden danger of burning, blast, need emergency cut-off valve, if normally pressure release of piston cylinder, valve cannot be closed, and has larger potential safety hazard.
For the Emergeny Cutoff Valves of vacuum pipe, all select conventional Emergeny Cutoff Valves in the past, and needed vacuum pipe manufacturing firm all oneself to transform.
Model utility content
The purpose of this utility model is to overcome the shortcoming of prior art, the Emergeny Cutoff Valves of provide a kind of and improve valve usability, be user-friendly to, be applicable to low temperature environment, be convenient to product maintenance, stable working is reliable and safe.
The purpose of this utility model is achieved through the following technical solutions: a kind of Emergeny Cutoff Valves, it comprises valve body, valve seat, flap, valve rod, the gentle moving control mechanism of long-neck valve gap, valve seat is arranged at valve inner, long-neck valve gap is fixedly mounted on the top of valve body, long-neck valve gap inner side is set with valve rod, the lower end of valve rod is fixedly connected with flap, and flap coordinates with valve seat, and described pneumatic control mechanism is connected with the upper end of valve rod;
Described pneumatic control mechanism comprises final controlling element, piston piece, return spring and top cover, described final controlling element is fixedly mounted on the top of long-neck valve gap, the top of final controlling element is provided with open-topped piston cylinder, piston piece cooperation is arranged in piston cylinder, the top of piston cylinder is installed with top cover, between top cover and piston piece, return spring is installed; On the bottom sidewall of piston cylinder, be also provided with gas source interface and fusible plug.
The place, axle center of described top cover is also provided with manual link, and manual link is connected by screw-thread fit with top cover, and the lower end of manual link is connected by bearing fit with the top of piston piece, and the upper end of manual link is installed with handwheel.
The top of described valve rod is also provided with the aperture pointer that can move up and down along with valve rod, is also provided with aperture graduation line on described final controlling element, and aperture pointer is corresponding with aperture graduation line.
Between described long-neck valve gap and valve rod, be also provided with filler.
The utlity model has following advantage:
1, final controlling element top arranges single cylinder piston mechanism, and piston opposite side arranges return spring, operates steadily reliable, improves valve usability.
2, cut-off valve is mainly by the keying of pneumatic control valve, and in the time cannot normally providing driving source of the gas to valve, the manual operating device opening/shutting valve of available valve, does not affect the normal work of whole system, the Security that further improves valve.
3, at valve rod outside suit long-neck valve gap, and be provided with filler between valve rod and long-neck valve gap, and the side at piston cylinder arranges fusible plug, fusible plug fusing under hot environment, discharge degree between piston and piston cylinder, valve rod moves down, and valve closing makes cut-off valve be applicable to the working environment of low temperature.
4, on valve rod, be provided with aperture pointer, aperture pointer, along with valve rod moves up and down, indicates the aperture situation of valve, and reflects its concrete aperture by the aperture graduation line being arranged on final controlling element, and it is convenient to observe, directly perceived, is user-friendly to.
5, change the former Emergeny Cutoff Valves for vacuum pipe, all selected conventional Emergeny Cutoff Valves, the modes that need vacuum pipe manufacturing firm all oneself to transform, vacuum tube and adpting flange only need weld in vacuum pipe manufacturing firm.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1-valve body, 2-valve seat, 3-flap, 4-valve rod, 5-long-neck valve gap, 6-final controlling element, 7-piston piece, 8-return spring, 9-top cover, 10-handwheel, 11-manual link, 12-gas source connector, 13-fusible plug, 14-aperture pointer, 15-aperture graduation line, 16-piston cylinder.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described, but protection domain of the present utility model is not limited to the following stated.
As shown in Figure 1, a kind of Emergeny Cutoff Valves, it comprises valve body 1, valve seat 2, flap 3, valve rod 4, long-neck valve gap 5 and pneumatic control mechanism, valve seat 2 is arranged at valve body 1 inside, long-neck valve gap 5 is fixedly mounted on the top of valve body 1, and long-neck valve gap 5 inner sides are set with valve rod 4, and the lower end of valve rod 4 is fixedly connected with flap 3, flap 3 coordinates with valve seat 2, and described pneumatic control mechanism is connected with the upper end of valve rod 4;
Described pneumatic control mechanism comprises final controlling element 6, piston piece 7, return spring 8 and top cover 9, described final controlling element 6 is fixedly mounted on the top of long-neck valve gap 5, the top of final controlling element 6 is provided with open-topped piston cylinder 16, piston piece 7 cooperations are arranged in piston cylinder 16, the top of piston cylinder 16 is installed with top cover 9, between top cover 9 and piston piece 7, return spring 8 is installed; On the bottom sidewall of piston cylinder 16, be also provided with gas source interface 12 and fusible plug 13.
The place, axle center of described top cover 9 is also provided with manual link 11, and manual link 11 is connected by screw-thread fit with top cover 9, and the lower end of manual link 11 is connected by bearing fit with the top of piston piece 7, and the upper end of manual link 11 is installed with handwheel 10.
The top of described valve rod 4 is also provided with the aperture pointer 14 that can move up and down along with valve rod 4, on described final controlling element 6, is also provided with aperture graduation line 15, and aperture pointer 14 is corresponding with aperture graduation line 15.
Between described long-neck valve gap 5 and valve rod 4, be also provided with filler.
Working procedure of the present utility model is as follows: in normal situation, utilize the pressure of piston piece 7 top return springs 8, promote piston piece 7 and move downward, be then with ovable valve stem 4 downward, the sealing surface of flap 3 and the sealing surface of valve seat 2 are fitted tightly, realize closing of valve; When after piston cylinder 16 pressurisings, piston piece 7 compression retracteding position springs 8 move upward, and band ovable valve stem 4 upwards, is raised flap 3 valve opening; When valve is in enable possition, during normal work, when if ambient temperature is increased to 70 ± 5 ℃, be arranged on fusible plug 13 fusings at piston cylinder 16 places, piston cylinder pressure release, return spring 8 promotes piston piece 7 and moves downward, band ovable valve stem 4 and flap 3 are downward, throttle down, stops medium to continue to flow rapidly, prevents that danger from occurring or expanding.
Claims (4)
1. an Emergeny Cutoff Valves, it is characterized in that: it comprises valve body (1), valve seat (2), flap (3), valve rod (4), long-neck valve gap (5) and pneumatic control mechanism, valve seat (2) is arranged at valve body (1) inside, long-neck valve gap (5) is fixedly mounted on the top of valve body (1), long-neck valve gap (5) inner side is set with valve rod (4), the lower end of valve rod (4) is fixedly connected with flap (3), flap (3) coordinates with valve seat (2), and described pneumatic control mechanism is connected with the upper end of valve rod (4);
Described pneumatic control mechanism comprises final controlling element (6), piston piece (7), return spring (8) and top cover (9), described final controlling element (6) is fixedly mounted on the top of long-neck valve gap (5), the top of final controlling element (6) is provided with open-topped piston cylinder (16), piston piece (7) cooperation is arranged in piston cylinder (16), the top of piston cylinder (16) is installed with top cover (9), between top cover (9) and piston piece (7), return spring (8) is installed; On the bottom sidewall of piston cylinder (16), be also provided with gas source interface (12) and fusible plug (13).
2. a kind of Emergeny Cutoff Valves according to claim 1, it is characterized in that: the place, axle center of described top cover (9) is also provided with manual link (11), manual link (11) is connected by screw-thread fit with top cover (9), the lower end of manual link (11) is connected by bearing fit with the top of piston piece (7), and the upper end of manual link (11) is installed with handwheel (10).
3. a kind of Emergeny Cutoff Valves according to claim 1, it is characterized in that: the top of described valve rod (4) is also provided with the aperture pointer (14) that can move up and down along with valve rod (4), on described final controlling element (6), be also provided with aperture graduation line (15), aperture pointer (14) is corresponding with aperture graduation line (15).
4. a kind of Emergeny Cutoff Valves according to claim 1, is characterized in that: between described long-neck valve gap (5) and valve rod (4), be also provided with filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420196962.4U CN203797088U (en) | 2014-04-22 | 2014-04-22 | Emergency cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420196962.4U CN203797088U (en) | 2014-04-22 | 2014-04-22 | Emergency cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203797088U true CN203797088U (en) | 2014-08-27 |
Family
ID=51379298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420196962.4U Expired - Fee Related CN203797088U (en) | 2014-04-22 | 2014-04-22 | Emergency cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203797088U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402457A (en) * | 2015-10-22 | 2016-03-16 | 四川格林流体控制设备有限公司 | Stop valve for storage tank |
| CN106090421A (en) * | 2016-06-16 | 2016-11-09 | 日照海达尔加气设备有限公司 | A kind of reliable emergency shutoff device of low temperature inflammable medium tank valve hot environment |
| CN109882624A (en) * | 2019-03-05 | 2019-06-14 | 上海百图低温阀门有限公司 | A kind of low temperature quick action emergency valve of novel spring cylinder separate structure |
| CN110050160A (en) * | 2016-12-09 | 2019-07-23 | 三菱电机株式会社 | Heat pump assembly |
| CN112431954A (en) * | 2020-11-20 | 2021-03-02 | 明珠阀门集团有限公司 | Fire-proof self-cut-off valve |
| CN114508617A (en) * | 2022-02-28 | 2022-05-17 | 宁波杜肯阀门制造有限公司 | Vacuum jacket low-temperature pneumatic emergency cut-off valve |
-
2014
- 2014-04-22 CN CN201420196962.4U patent/CN203797088U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402457A (en) * | 2015-10-22 | 2016-03-16 | 四川格林流体控制设备有限公司 | Stop valve for storage tank |
| CN105402457B (en) * | 2015-10-22 | 2018-05-08 | 四川格林流体控制设备有限公司 | A kind of tank cutoff valve |
| CN106090421A (en) * | 2016-06-16 | 2016-11-09 | 日照海达尔加气设备有限公司 | A kind of reliable emergency shutoff device of low temperature inflammable medium tank valve hot environment |
| CN106090421B (en) * | 2016-06-16 | 2018-03-02 | 日照海达尔加气设备有限公司 | A kind of inflammable reliable emergency shutoff device of medium tank valve hot environment of low temperature |
| CN110050160A (en) * | 2016-12-09 | 2019-07-23 | 三菱电机株式会社 | Heat pump assembly |
| CN110050160B (en) * | 2016-12-09 | 2021-08-24 | 三菱电机株式会社 | Heat pump device |
| CN109882624A (en) * | 2019-03-05 | 2019-06-14 | 上海百图低温阀门有限公司 | A kind of low temperature quick action emergency valve of novel spring cylinder separate structure |
| CN112431954A (en) * | 2020-11-20 | 2021-03-02 | 明珠阀门集团有限公司 | Fire-proof self-cut-off valve |
| CN114508617A (en) * | 2022-02-28 | 2022-05-17 | 宁波杜肯阀门制造有限公司 | Vacuum jacket low-temperature pneumatic emergency cut-off valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |