CN203963119U - Emergency shutdown valve - Google Patents
Emergency shutdown valve Download PDFInfo
- Publication number
- CN203963119U CN203963119U CN201420412885.1U CN201420412885U CN203963119U CN 203963119 U CN203963119 U CN 203963119U CN 201420412885 U CN201420412885 U CN 201420412885U CN 203963119 U CN203963119 U CN 203963119U
- Authority
- CN
- China
- Prior art keywords
- cavity
- valve
- emergency shutdown
- valve body
- passage
- 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 discloses a kind of emergency shutdown valve, comprise the valve body of hollow and be arranged in the valve rod in described valve body; Described valve body comprise have the first cavity and import import department, there is the export department of passage and outlet and there is the pressure release portion of the second cavity and pressure relief opening, described channel cross-section is less than described the first cavity and the second cavity cross section, described the first cavity, passage and the second cavity communicate successively and form the path moving for described valve rod, described import is communicated with described the first cavity and valve outer wall, described outlet is communicated with described passage and valve outer wall, and described pressure relief opening is communicated with described the second cavity and valve outer wall.The utility model, by pressure relief opening is set on valve body, prevents valve rod resilience after emergency cut-off, has improved the safety reliability of valve.
Description
[technical field]
The utility model relates to valve technology field, particularly a kind of emergency shutdown valve that prevents valve rod resilience.
[background technique]
Emergency shutdown valve (ESD valve) is a kind of valve device that can fast shut-off line fluid path.This valve is mainly tackled is the emergency treatment situation of pipeline while there is safety problem, therefore relatively more outstanding agility and reliability of closing.Mechanical type emergency shutdown valve generally has telescopic valve rod, the flexible path that can block or open between valve import and export of valve rod.Yet the residual fluid in valve has pressure, the pressure difference that often valve rod two ends fluid produces when main body pipeline generation problem can cause valve rod to have the trend of again opening path, makes valve invalidation and can not get rid of potential safety hazard.
Therefore, be necessary to provide a kind of new emergency shutdown valve to solve above problem.
[model utility content]
Main purpose of the present utility model is to provide a kind of emergency shutdown valve that prevents valve rod resilience.
The utility model is achieved through the following technical solutions above-mentioned purpose: a kind of emergency shutdown valve, comprises the valve body of hollow and be arranged in the valve rod in described valve body; Described valve body comprise have the first cavity and import import department, there is the export department of passage and outlet and there is the pressure release portion of the second cavity and pressure relief opening, described channel cross-section is less than described the first cavity and the second cavity cross section, described the first cavity, passage and the second cavity communicate successively and form the path moving for described valve rod, described import is communicated with described the first cavity and valve outer wall, described outlet is communicated with described passage and valve outer wall, and described pressure relief opening is communicated with described the second cavity and valve outer wall.
In some embodiments, described valve rod comprises integrated head, thin portion, thick portion and afterbody successively, and described head can move axially with thick portion in described passage, and described thin portion external diameter is less than described passage internal diameter.
In some embodiments, described vias inner walls is provided with the first seal ring, and described head is arranged with the second seal ring outward.
In some embodiments, described afterbody is provided with handle.
Preferably, described valve body one end is also provided with the first sealed department, and described the first sealed department has the uncovered of the described path of connection and the external world, the described uncovered threaded block that has been threaded connection, outside the thick portion of described valve rod, be arranged with connecting head, described connecting head is held between described threaded block and valve body.
Preferably, be provided with the 3rd cavity of cylindricality in described threaded block, described valve rod is provided with the bulge loop of leading that can slide at described the 3rd cavity by the periphery of caudal thick portion.
Preferably, between described thick portion and connecting head inwall, be provided with the 3rd seal ring.
In some embodiments, between described connecting head and the surface of contact of valve body, be provided with the 4th seal ring.
Preferably, the other end of relatively described the first sealed department of described valve body is provided with the second sealed department, and described the second sealed department is arranged with front and cap outward.
Preferably, between described front also cap and described the second sealed department end face, clamping has the 5th seal ring.
Compared with prior art, the beneficial effect of the utility model emergency shutdown valve is:
1, valve body is provided with pressure relief opening, and when valve rod is closed, the path between import and outlet is blocked by the thick portion of valve rod, and simultaneously thin portion decontrols the path between outlet and pressure relief opening, makes exit portion reduction of blood pressure in high-speed, thereby eliminates the trend of valve rod resilience.
2, because the first cavity and the second cavity cross-section are greater than passage, therefore will be from two side perforatings in valve body processing, threaded block and connecting head play the function of valve body open end sealed valve body, front also cap and seal ring play the function of valve body closed end both sides sealing, make valve body can not reveal in normal work.
3, the moving range of leading bulge loop on the 3rd cavity restriction valve rod in threaded block, while preventing from controlling, valve rod is deviate from valve body.
4, the first seal ring, the second seal ring and the 3rd seal ring can avoid fluid when valve rod endwisely slips to leak mutually between cavity.
5, the 4th seal ring and the 5th seal ring can seal the stationary plane in valve body, prevent that fluid from leaking toward extraneous.
6, the handle capable of being of valve rod afterbody person's operation easy to use.
[accompanying drawing explanation]
Sectional view when Fig. 1 is the unlatching of the utility model emergency shutdown valve;
Fig. 2 is the sectional view of the utility model emergency shutdown valve while closing.
Numeral in figure:
1, valve body, 1a, path, 11, import department, 111, the first cavity, 112, import, 12, export department, 121, passage, 122, outlet, the 123, first seal ring, 13, pressure release portion, the 131, second cavity, 132, pressure relief opening, 14, the first sealed department, 141, uncovered, the 15, second sealed department, 151, recessed circle;
2, valve rod, 21, head, the 211, second seal ring, 22, thin portion, 23, thick portion, the 231, the 3rd seal ring, 232, lead bulge loop, 24, afterbody;
3, threaded block, the 31, the 3rd cavity;
4, connecting head, the 41, the 4th seal ring;
5, front and cap, the 51, the 5th seal ring;
6, handle.
[embodiment]
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1 and Figure 2, the utility model is a kind of emergency shutdown valve, and it comprises threaded block 3 and connecting head 4, front and cap 5 and the seal ring 6 of sealing the second sealed department 15 and the handle 6 of being located at valve rod 2 afterbodys 24 of the valve body 1 with import 112, outlet 122 and pressure relief opening 132 of hollow, the valve rod 2 that is arranged in valve body 1 interior reducing, sealing the first sealed department 14.
With reference to Fig. 1, Fig. 2, valve body 1 is divided into integrated the first sealed department 14 successively, import department 11, export department 12, pressure release portion 13 and the second sealed department 15, the first sealed department 14 has uncovered 141, import department 11 has the first cavity 111 and is communicated with the import 112 in the first cavity 111 and valve body 1 outside, export department 12 has cross section and is less than the passage 121 of the first cavity 111 and communicating passage 121 and outlet 122 with valve body 1 outside, pressure release portion 13 has the second cavity 131 and is communicated with the pressure relief opening 132 in the second cavity 131 and valve body 1 outside, the second cavity 131 extends to the end face of the second sealed department 15 always.Uncovered the 141, first cavity 111, passage 121, the second cavity 131 is interconnected successively and form the path 1a moving for valve rod 2 axis.Thus, for the wide path 1a in narrow two ends in the middle of processing, can pass through from the uncovered 141 and second cavity 131 two ends Drilling operation inward, more for convenience.Passage 121 is provided with the first seal ring 123, the first seal rings 123 for cutting off import 112 to the path 1a between outlet 122 when valve rod 2 pushes near the first cavity 111 1 side inwalls.
With reference to Fig. 1, Fig. 2, valve rod 2 is divided into integrated anterior 21, thin portion 22, thick portion 23 and afterbody 24 successively.Front portion 21 and thick portion 23 external diameters all only can move axially at valve body 1 passage 121 positions, and the external diameter of thin portion 22 is less than passage 121 internal diameters, thereby passage 121 is communicated with import 112 or pressure relief opening 132 with the gap between thin portion 22 in order to make exporting 122.Outer second seal ring 211, the second seal rings 211 that are arranged with of head 21 for cutting off outlet 122 to the path 1a between pressure relief opening 132 when valve rod 2 is pulled out.Valve rod 2 afterbodys 24 are also provided with handle 7, in order to person's operation easy to use.
With reference to Fig. 1, Fig. 2, threaded block 3 is threadedly connected in the first sealed department 14 uncovered, and connecting head 4 is held between threaded block 3 and valve body 1 and is placed on valve rod 2 thick portion 23 peripheries.Between the surface of contact of connecting head 4 and valve body 1, be provided with the 4th seal ring 41, the four seal rings 41 in order to cut off the path 1a between the first cavity 111 to uncovered 141.Between thick portion 23 and connecting head 4 inwalls, be provided with the 3rd seal ring 231, the three seal rings 231 in order to seal the first cavity 111 to the gap between the 3rd cavity 31.The thick portion 23 of valve rod 2 is provided with and leads bulge loop 232 near the position of afterbody 14, is provided with the 3rd cavity 31 in threaded block 3, leads bulge loop 232 and can be contained in the 3rd cavity 31 and axially move.The 3rd cavity 31 can limit the moving range of valve rod 2, and while preventing from controlling, valve rod 2 is deviate from valve body 1.
With reference to Fig. 1, Fig. 2, the second sealed department 15 is outer be provided with before and cap 5, between front and cap 5 and the second sealed department 15 end faces, clamp and have the 5th seal ring 51.The 5th seal ring 51 is for sealing the second cavity 131 to the gap between the external world.
With reference to Fig. 1, when handle 6 is pulled out, the thin portion 22 of valve rod 2 makes import 112 unimpeded to the path 1a of outlet 122, and valve rod 2 heads 21 are blocked the second cavity 131, make valve in running order, and now fluid can be carried toward outlet 122 from import 112.
With reference to Fig. 2, when handle 6 pushes, the thin portion 22 of valve rod 2 makes pressure relief opening 132 unimpeded to the path 1a of outlet 122, and the first cavity 111 is blocked by the thick portion 23 of valve rod 2, make valve in closed condition, because now passage 121 is extraneous through the second cavity 131 and pressure relief opening 132 connections, so pressure is released, after pushing, valve rod 2 can, because of the residual gas pressure resilience of compression, not improve the safety reliability of emergency shutdown valve.
Above-described is only mode of executions more of the present utility model.For the person of ordinary skill of the art, not departing under the prerequisite of the utility model creation design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (10)
1. an emergency shutdown valve, comprise the valve body of hollow and be arranged in the valve rod in described valve body, it is characterized in that: described valve body comprises the import department with the first cavity and import, the export department and the pressure release portion with the second cavity and pressure relief opening with passage and outlet, described channel cross-section is less than described the first cavity and the second cavity cross section, described the first cavity, passage and the second cavity communicate successively and form the path moving for described valve rod, described import is communicated with described the first cavity and valve outer wall, described outlet is communicated with described passage and valve outer wall, described pressure relief opening is communicated with described the second cavity and valve outer wall.
2. emergency shutdown valve according to claim 1, is characterized in that: described valve rod comprises the head connecting successively, thin portion, thick portion and afterbody, and described head can move axially with thick portion in described passage, and described thin portion external diameter is less than described passage internal diameter.
3. emergency shutdown valve according to claim 2, is characterized in that: described vias inner walls is provided with the first seal ring, and described head is arranged with the second seal ring outward.
4. emergency shutdown valve according to claim 2, is characterized in that: described afterbody is provided with handle.
5. emergency shutdown valve according to claim 2, it is characterized in that: described valve body one end is also provided with the first sealed department, described the first sealed department has the uncovered of the described path of connection and the external world, the described uncovered threaded block that has been threaded connection, outside the thick portion of described valve rod, be arranged with connecting head, described connecting head is held between described threaded block and valve body.
6. emergency shutdown valve according to claim 5, is characterized in that: in described threaded block, be provided with the 3rd cavity of cylindricality, described valve rod is provided with the bulge loop of leading that can slide at described the 3rd cavity by the periphery of caudal thick portion.
7. emergency shutdown valve according to claim 5, is characterized in that: between described thick portion and connecting head inwall, be provided with the 3rd seal ring.
8. emergency shutdown valve according to claim 5, is characterized in that: between described connecting head and the surface of contact of valve body, be provided with the 4th seal ring.
9. emergency shutdown valve according to claim 5, is characterized in that: the other end of relatively described the first sealed department of described valve body is provided with the second sealed department, and described the second sealed department is arranged with front and cap outward.
10. emergency shutdown valve according to claim 9, is characterized in that: before described and between cap and described the second sealed department end face, clamp and have the 5th seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420412885.1U CN203963119U (en) | 2014-07-24 | 2014-07-24 | Emergency shutdown valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420412885.1U CN203963119U (en) | 2014-07-24 | 2014-07-24 | Emergency shutdown valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203963119U true CN203963119U (en) | 2014-11-26 |
Family
ID=51923701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420412885.1U Expired - Fee Related CN203963119U (en) | 2014-07-24 | 2014-07-24 | Emergency shutdown valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203963119U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763897A (en) * | 2016-12-30 | 2017-05-31 | 佛山市德克医疗器械有限公司 | A kind of controlling switch valve of dental units |
-
2014
- 2014-07-24 CN CN201420412885.1U patent/CN203963119U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763897A (en) * | 2016-12-30 | 2017-05-31 | 佛山市德克医疗器械有限公司 | A kind of controlling switch valve of dental units |
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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: 20141126 Termination date: 20170724 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |