CN204127410U - Ultra-high pressure safety valve - Google Patents
Ultra-high pressure safety valve Download PDFInfo
- Publication number
- CN204127410U CN204127410U CN201420525062.XU CN201420525062U CN204127410U CN 204127410 U CN204127410 U CN 204127410U CN 201420525062 U CN201420525062 U CN 201420525062U CN 204127410 U CN204127410 U CN 204127410U
- Authority
- CN
- China
- Prior art keywords
- end surface
- valve
- adjustment sleeve
- flap
- jacking block
- 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 - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims description 5
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Safety Valves (AREA)
Abstract
The utility model relates to a kind of ultra-high pressure safety valve, comprises valve body, valve seat, flap, spring, valve rod, valve gap, adjustment sleeve, and valve seat top has the sealing surface cooperatively interacted with flap lower end sealing surface; End face mainly inside valve clack sealing surface is evenly shaped with some guiding ribs, and guiding rib radial outer end face is arc surface, the arc diameter of this arc surface and valve body inlet passage equal diameters, and guiding rib exterior arc surface coordinates with valve body inlet passage inwall is dynamic; The lower end surface of flap upper-end surface and lower jacking block contacts, the upper-end surface of lower jacking block is fixedly connected with valve rod, spring fitting is between the upper-end surface of lower jacking block and adjustment sleeve lower end surface, adjustment sleeve periphery is threaded with body cavity wall, between valve gap lower end surface and adjustment sleeve upper-end surface, form a cavity, between adjustment sleeve upper-end surface and lower end surface, be shaped with through hole.Under high back pressure operating mode, the impact of back pressure on spring Set pressure is less, and Set pressure is accurate, Reliability of Microprocessor good, is applicable to the safety valve of high back pressure operating mode.
Description
Technical field
The utility model relates to a kind of safety valve, especially relates to a kind of Direct spring loaded safety valve.The utility model is applicable to the safety valve of high back pressure operating mode.
Background technique
Existing Direct spring loaded safety valve generally all selects bellows balance type structure when there being back pressure, utilize bellows to isolating one and valve clack sealing surface central diameter open tubular column of a size above flap, thus overcome the impact of back pressure on Set pressure value, in order to reduce bellows action power downward above flap, bellows is generally all made up of the very thin metal wave of a slice or rubber membrane, its shortcoming is: when the back pressure in safety valve outlet port is very high, when bellows cannot bear pressure medium, then bellows is exactly ineffective, affect the Set pressure value of safety valve, Reliability of Microprocessor is poor.
Summary of the invention
The purpose of this utility model is the shortcoming existed for prior art, provides one can be used in high back pressure operating mode, Set pressure is accurate, ultra-high pressure safety valve that Reliability of Microprocessor is good.
The utility model realizes by following technical solution:
This ultra-high pressure safety valve comprises valve body, valve seat, flap, spring, valve rod, valve gap, adjustment sleeve, and valve seat top has the sealing surface cooperatively interacted with flap lower end sealing surface; End face mainly inside valve clack sealing surface is evenly shaped with some guiding ribs, and guiding rib radial outer end face is arc surface, the arc diameter of this arc surface and valve body inlet passage equal diameters, and guiding rib exterior arc surface coordinates with valve body inlet passage inwall is dynamic; The lower end surface of flap upper-end surface and lower jacking block contacts, the upper-end surface of lower jacking block is fixedly connected with valve rod, spring fitting is between the upper-end surface of lower jacking block and adjustment sleeve lower end surface, adjustment sleeve periphery is threaded with body cavity wall, between valve gap lower end surface and adjustment sleeve upper-end surface, form a cavity, between adjustment sleeve upper-end surface and lower end surface, be shaped with through hole.
In above technological scheme, lower jacking block top periphery is axially circular arc.
In above technological scheme, a German-style metal lensring is installed between valve body and valve gap.
The utility model has the advantages that: under high back pressure operating mode, the impact of back pressure on spring Set pressure is less, and Set pressure is accurate, Reliability of Microprocessor good.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment:
According to Fig. 1, the utility model ultra-high pressure safety valve comprises valve body 1, valve seat 2, flap 3, spring 5, valve rod 6, valve gap 7, adjustment sleeve 9, and valve seat 2 top has the sealing surface cooperatively interacted with flap 3 lower end sealing surface, end face inside flap 3 sealing surface is evenly shaped with some guiding ribs, guiding rib radial outer end face is arc surface, the arc diameter of this arc surface and valve body 1 inlet passage equal diameters, guiding rib exterior arc surface coordinates with valve body 1 inlet passage inwall is dynamic, mode radial deflection when preventing flap 3 from opening and closing, guarantees that flap 3 moves along valve body 1 inlet passage centerline direction, the lower end surface of flap 3 upper-end surface and lower jacking block 4 contacts, the upper-end surface of lower jacking block 4 is fixedly connected with valve rod 6, spring 5 is arranged between the upper-end surface of lower jacking block 4 and adjustment sleeve 9 lower end surface, adjustment sleeve 9 periphery is threaded with valve body 1 internal chamber wall, by adjusting the position of adjustment sleeve 9, the elastic force of Regulation spring 5, setting Set pressure, a cavity is formed between valve gap 7 lower end surface and adjustment sleeve 9 upper-end surface, through hole is shaped with between adjustment sleeve 9 upper-end surface and lower end surface, the cavity of adjustment sleeve 9 upper-end surface is communicated with the spring chamber of lower end surface, prevent spring chamber internal pressure from hindering the movement of lower jacking block 4.
Lower jacking block 4 top periphery is axially circular arc, namely descends the fitting surface between jacking block 4 and valve body 1 inner chamber circular hole wall to be circular arc on valve rod 6 axial direction, makes to form line between lower jacking block 4 with valve body 1 inner chamber circular hole wall and coordinate, and reduces moving resistance between the two.
One German-style metal lensring 8 is installed between valve body 1 and valve gap 7, the open/close states of flap 3 can be observed from lens, between German-style metal lensring 8 upper and lower end face and valve gap 7 lower end surface and valve body 1 upper-end surface, be respectively equipped with sealing gasket.
Claims (3)
1. a ultra-high pressure safety valve, comprise valve body (1), valve seat (2), flap (3), spring (5), valve rod (6), valve gap (7), adjustment sleeve (9), valve seat (2) top has the sealing surface cooperatively interacted with flap (3) lower end sealing surface; It is characterized in that the end face inside flap (3) sealing surface is evenly shaped with some guiding ribs, guiding rib radial outer end face is arc surface, the arc diameter of this arc surface and valve body (1) inlet passage equal diameters, guiding rib exterior arc surface coordinates with valve body (1) inlet passage inwall is dynamic; The lower end surface of flap (3) upper-end surface and lower jacking block (4) contacts, the upper-end surface of lower jacking block (4) is fixedly connected with valve rod (6), spring (5) is arranged between the upper-end surface of lower jacking block (4) and adjustment sleeve (9) lower end surface, adjustment sleeve (9) periphery is threaded with valve body (1) internal chamber wall, between valve gap (7) lower end surface and adjustment sleeve (9) upper-end surface, form a cavity, adjustment sleeve (9) is shaped with through hole between upper-end surface and lower end surface.
2. ultra-high pressure safety valve according to claim 1, is characterized in that lower jacking block (4) top periphery is axially circular arc.
3. ultra-high pressure safety valve according to claim 1 and 2, is characterized in that installing a German-style metal lensring (8) between valve body (1) and valve gap (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420525062.XU CN204127410U (en) | 2014-09-10 | 2014-09-10 | Ultra-high pressure safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420525062.XU CN204127410U (en) | 2014-09-10 | 2014-09-10 | Ultra-high pressure safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204127410U true CN204127410U (en) | 2015-01-28 |
Family
ID=52383768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420525062.XU Expired - Lifetime CN204127410U (en) | 2014-09-10 | 2014-09-10 | Ultra-high pressure safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204127410U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677924A (en) * | 2020-06-30 | 2020-09-18 | 上海捷氢科技有限公司 | Plug-in type pressure relief safety valve |
| CN116357635A (en) * | 2023-03-20 | 2023-06-30 | 河南航天液压气动技术有限公司 | Anti-back pressure liquid overflow valve |
-
2014
- 2014-09-10 CN CN201420525062.XU patent/CN204127410U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677924A (en) * | 2020-06-30 | 2020-09-18 | 上海捷氢科技有限公司 | Plug-in type pressure relief safety valve |
| CN116357635A (en) * | 2023-03-20 | 2023-06-30 | 河南航天液压气动技术有限公司 | Anti-back pressure liquid overflow valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150128 |