CN204062072U - Low temperature Emergeny Cutoff Valves open in usual - Google Patents
Low temperature Emergeny Cutoff Valves open in usual Download PDFInfo
- Publication number
- CN204062072U CN204062072U CN201420421455.6U CN201420421455U CN204062072U CN 204062072 U CN204062072 U CN 204062072U CN 201420421455 U CN201420421455 U CN 201420421455U CN 204062072 U CN204062072 U CN 204062072U
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- cylinder body
- piston
- low temperature
- cutoff valves
- emergeny cutoff
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Abstract
The utility model is low temperature Emergeny Cutoff Valves open in usual, solves and drives Normally closed type Emergeny Cutoff Valves when the place of often unlatching or long-time unlatching by existing gas, cause the problem that a large amount of low temperature Emergeny Cutoff Valves instrument supply gases consumes.There are upper cylinder body (2), lower cylinder body (8), upper cylinder body (2) is connected with cylinder cap (4), cylinder cap (4) there is air input joint (5), fusible plug (6) is built in air input joint (5), dividing plate (10) is had to be divided into upper and lower chamber in upper cylinder body (2), piston (3) is positioned at epicoele, piston (3) is connected with transmission shaft (1), spring (11) is had between piston (3) and dividing plate (10), transmission shaft (1) is connected with valve rod (7), and valve rod (7) is connected with the flap (9) in lower cylinder body (8).
Description
technical field:
The utility model is relevant with low temperature Emergeny Cutoff Valves.
background technique:
Existing low temperature Emergeny Cutoff Valves is that gas drives Normally closed type Emergeny Cutoff Valves now, under normal circumstances, under utilizing the active force of upper piston area spring, promotion piston moves downward, then drive and valve rod are downwards, make valve clack sealing surface and sealing surface of seat laminating, realize the closedown of valve; When after cylinder charge, under the influence of air pressure, move upward after piston overpowers acting force of the spring, drive piston rod and valve rod upwards, flap is raised, valve opening.When valve is in enable possition, during normal work, if when ambient temperature is increased to 70 ± 5 DEG C, be arranged on the fusible plug fusing at cylinder place, cylinder pressure release, spring promotes piston and moves downward, band ovable valve stem and flap downward, rapid throttle down, stops medium to continue flowing, prevents dangerous generation or expands.
This gas opens the place that Normally closed type low temperature Emergeny Cutoff Valves is comparatively applicable to being used in work of infrequently opening or long-time unlatching work.When being used in the place of often opening or open for a long time, need to provide instrument air pressure to the pneumatic actuator needs of low temperature Emergeny Cutoff Valves are continual for a long time, especially the low temperature Emergeny Cutoff Valves used on long-distance transport pipes, make to cause a large amount of low temperature Emergeny Cutoff Valves instrument supply gas consumption, be also unfavorable for the working effect of low temperature Emergeny Cutoff Valves.
model utility content:
The purpose of this utility model is to provide one and is specifically designed in the regular unlatching work of needs or opens work for a long time, only at the low temperature Emergeny Cutoff Valves open in usual specifically in emergency circumstances just carrying out emergency cut-off.
The utility model realizes by the following method like this:
There are upper cylinder body 2, lower cylinder body 8, upper cylinder body 2 is connected with cylinder cap 4, cylinder cap 4 there is air input joint 5, fusible plug 6 is built in air input joint 5, and have dividing plate 10 to be divided into upper and lower chamber in upper cylinder body 2, piston 3 is positioned at epicoele, piston 3 is connected with transmission shaft 1, have spring 11 between piston 3 and dividing plate 10, transmission shaft 1 is connected with valve rod 7, and valve rod 7 is connected with the flap 9 in lower cylinder body 8.
The utility model is applicable to the place being used in frequent unlatching work or long-time unlatching work, especially the low temperature Emergeny Cutoff Valves used on long-distance transport pipes, it does not need continually for a long time to provide instrument air pressure, make to cause a large amount of low temperature Emergeny Cutoff Valves instrument supply gas consumption, be conducive to the working effect of low temperature Emergeny Cutoff Valves.
The utility model has the following advantages:
(1) the low temperature emergency cut-off of the state of working long hours is suitable for
(2) structure is simple, produces assembling easily.
accompanying drawing illustrates:
Fig. 1 is structural drawing of the present utility model,
Fig. 2 is partial enlarged drawing of the present utility model.
Embodiment
There are upper cylinder body 2, lower cylinder body 8, upper cylinder body 2 is connected with cylinder cap 4, cylinder cap 4 there is air input joint 5, fusible plug 6 is built in air input joint 5, and have dividing plate 10 to be divided into upper and lower chamber in upper cylinder body 2, piston 3 is positioned at epicoele, piston 3 is connected with transmission shaft 1, have spring 11 between piston 3 and dividing plate 10, transmission shaft 1 is connected with valve rod 7, and valve rod 7 is connected with the flap 9 in lower cylinder body 8.
Under normal circumstances, control instrument gas is blocked in outside cylinder body air input joint 5 by fusible plug 6, under the active force of piston 3 spring 11 below, piston 3 is in the top of the epicoele of upper cylinder body 2, piston 3 drives low temperature Emergeny Cutoff Valves valve rod 7 by transmission shaft 1, makes low temperature Emergeny Cutoff Valves be in unlatching working state.When valve be in unlatching normally work time, if when ambient temperature is increased to 70 ± 5 DEG C, the fusible plug 6 be built in cylinder body air input joint 5 melts, control instrument gas enters in cylinder body 2 by cylinder body air input joint 5, piston 3 is at the pressure moved downward of instrument supply gas, piston 3 promotes low temperature Emergeny Cutoff Valves valve rod 7 by transmission shaft 1 and moves downward, the sealing surface of flap 9 and sealing surface of seat are fitted tightly, realize the closedown of valve fast, stop medium to continue flowing, prevent dangerous generation or expand.
Claims (1)
1. low temperature Emergeny Cutoff Valves open in usual, it is characterized in that there is upper cylinder body (2), lower cylinder body (8), upper cylinder body (2) is connected with cylinder cap (4), cylinder cap (4) there is air input joint (5), fusible plug (6) is built in air input joint (5), have on dividing plate (10) is divided in upper cylinder body (2), cavity of resorption, piston (3) is positioned at epicoele, piston (3) is connected with transmission shaft (1), spring (11) is had between piston (3) and dividing plate (10), transmission shaft (1) is connected with valve rod (7), valve rod (7) is connected with the flap (9) in lower cylinder body (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420421455.6U CN204062072U (en) | 2014-07-29 | 2014-07-29 | Low temperature Emergeny Cutoff Valves open in usual |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420421455.6U CN204062072U (en) | 2014-07-29 | 2014-07-29 | Low temperature Emergeny Cutoff Valves open in usual |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204062072U true CN204062072U (en) | 2014-12-31 |
Family
ID=52203588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420421455.6U Active CN204062072U (en) | 2014-07-29 | 2014-07-29 | Low temperature Emergeny Cutoff Valves open in usual |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204062072U (en) |
Cited By (1)
| 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 |
-
2014
- 2014-07-29 CN CN201420421455.6U patent/CN204062072U/en active Active
Cited By (2)
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |