CN204805646U - Depression bar unstability triggers type relief valve suitable for high pressure operating mode - Google Patents
Depression bar unstability triggers type relief valve suitable for high pressure operating mode Download PDFInfo
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- CN204805646U CN204805646U CN201520114852.3U CN201520114852U CN204805646U CN 204805646 U CN204805646 U CN 204805646U CN 201520114852 U CN201520114852 U CN 201520114852U CN 204805646 U CN204805646 U CN 204805646U
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- elongate rod
- pressure medium
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- pressure
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- 230000006837 decompression Effects 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 4
- 230000001737 promoting effect Effects 0.000 claims description 2
- 230000001960 triggered effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 5
- 238000011144 upstream manufacturing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Abstract
The utility model relates to a depression bar unstability triggers type relief valve suitable for high pressure operating mode, essential element include valve body, downside flange, piston, valve gap, pole cage, elongate rod, wand cap and right side flange. Wherein, the part that triggers relief valve action is elongate rod. As the pressure medium at the device upper reaches when being less than the setting value, pressure medium is less than elongate rod's critical load through the axial load of piston action on elongate rod, and elongate rod remains stable, and the piston is in operating position no. 1, and the device is in the closed condition, as the pressure medium at the device upper reaches when reaching the setting value, pressure medium is greater than elongate rod's critical load through the axial load of piston action on elongate rod, and the elongate rod unstability causes its effective length to diminish in the twinkling of an eye by a wide margin, and the piston promotes to move to operating position no. 2 down at pressure medium, and the piston broke away from disk seat messenger device and opened this moment to the automatic mesh of opening the pressure release of device under the superpressure operating mode has been realized.
Description
Technical field
The utility model relates to a kind of pressure relief device, relates to a kind of pressure relief device can automatically opened when pressure exceedes setting value more specifically.
Background technique
In industries such as oil, mining, drilling wells; the perils such as the blast that may cause to prevent blowout and blowout out of control; the device of the pipeline of protective system and their upstream and downstream and equipment, can open the safety installations of pressure release automatically under often needing to be arranged on superpressure operating mode.
The utility model is a kind of strut buckling flip-over type pressure relief device, and can be applicable to high pressure operating mode by its effective lifting surface area of adjustment, and has very high pressure release precision.
Summary of the invention
The strut buckling flip-over type Decompression valves of high pressure operating mode that what the utility model related to be applicable to, critical piece comprises valve body, lower side flange, piston, valve gap, bar cage, elongate rod, pole cap and right flange.
Wherein, the parts triggering Decompression valves action are elongate rod, and it is installed on valve body outside, and one end connects with piston, and the other end connects with the pole cap be installed on bar cage.When the pressure medium of device upstream is lower than setting value, pressure medium is less than the ultimate load of elongate rod by the thrust load of piston action in elongate rod, and elongate rod keeps stable, and piston is in working position one, and device is in closed condition; When the pressure medium of device upstream reaches setting value, pressure medium is greater than the ultimate load of elongate rod by the thrust load of piston action in elongate rod, elongate rod unstability causes its effective length moment significantly to diminish, piston moves to working position two under pressure medium promotes, now piston disengaging valve seat makes device open, thus achieves the object that superpressure operating mode lower device opens pressure release automatically.
The strut buckling flip-over type Decompression valves of high pressure operating mode that what the utility model related to be applicable to, the effective diameter that its piston two ends seal ring is chosen is different, the pressure of medium by act on piston two seal rings between anchor ring on.Can by this annular of Reasonable adjustment effectively lifting surface area, make Decompression valves with apply operating mode pressure adapt.
Accompanying drawing explanation
Fig. 1 is the main structure figure being applicable to the strut buckling flip-over type Decompression valves of high pressure operating mode that the utility model relates to;
Fig. 2 is two the piston seal loop diameters being applicable to the strut buckling flip-over type Decompression valves of high pressure operating mode that relate to of the utility model and the effective lifting surface area schematic diagram of annular;
Fig. 3 be the utility model relate to be applicable to the strut buckling flip-over type Decompression valves normal state of high pressure operating mode time schematic diagram;
Fig. 4 be the utility model relate to the strut buckling flip-over type Decompression valves pressure release state of high pressure operating mode that is applicable to time schematic diagram;
Embodiment
Be applicable to the strut buckling flip-over type Decompression valves of high pressure operating mode, critical piece comprises valve body 1, lower side flange 2, piston 3, valve gap 4, bar cage 5, elongate rod 6, pole cap 7 and right flange 8.Wherein, the parts triggering Decompression valves action are elongate rod 6, are triggered the pressure release of valve by the strut buckling of elongate rod 6.As shown in Figure 1.
In normal conditions, medium flows into valve body 1 from right flange 8 as shown in Figure 1.After valve triggers pressure release, medium can be discharged from lower side flange as shown in Figure 1.
Wherein, the seal ring effective diameter chosen in piston 3 two ends is different, the pressure of medium by act on piston 3 two seal rings between anchor ring on.Can by this annular of Reasonable adjustment effectively lifting surface area, make Decompression valves with apply operating mode pressure adapt.
Suppose that the external diameter of the small sealing ring of piston 3 is d, the external diameter of big sealing ring is D.Then the effective lifting surface area of annular is π (D
2-d
2)/4.As shown in Figure 2.When D and d size close to time, annular effectively lifting surface area π (D
2-d
2)/4 can be very little.Even if the pressure of medium is very large, the axial force acted in elongate rod 6 by the effective lifting surface area of annular is also very little, makes this structure be applicable to high pressure operating mode.
Introduce embodiment of the present utility model below.
In normal conditions, the pressure medium of device upstream is lower than setting value, and pressure medium is less than the ultimate load of elongate rod 6 by the effective lifting surface area of the annular of piston 3 thrust load acted on inadequate stock 6, and elongate rod 6 keeps stable, piston 3 is in working position one, and device is in closed condition.See Fig. 3.
Under damage, when the pressure medium of device upstream reaches setting value, pressure medium exceedes the ultimate load of elongate rod 6 by the effective lifting surface area of the annular of piston 3 thrust load acted in elongate rod 6, elongate rod 6 unstability causes its effective length moment significantly to diminish, piston 3 moves to working position two under pressure medium promotes, and the lower side flange 2 of now piston 3 disengaging makes device open and pressure release.See Fig. 4.
After valve pressure release, can from valve body outside by promoting with the valve rod of piston 3 one, piston 3 to be resetted, then changed by inadequate stock 6, valve recovers sealing state.
According to the Euler law of strut buckling, its ultimate load can be changed by the Young's modulus of adjustment elongate rod 6 and slenderness ratio, and then setting pressure during modifier action.
All features disclosed in this specification, or the step in disclosed all methods or process, except the special type mutually repelled and/or step, all can combine by any way.
Arbitrary feature disclosed in this specification (comprising any accessory claim, summary and accompanying drawing), unless specifically stated otherwise, all can be replaced by other equivalence or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
The utility model is not limited to aforesaid embodiment.The utility model expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (3)
1. one kind is applicable to the strut buckling flip-over type Decompression valves of high pressure operating mode, its critical piece comprises valve body (1), lower side flange (2), piston (3), valve gap (4), bar cage (5), elongate rod (6), pole cap (7) and right flange (8), it is characterized in that: the parts triggering Decompression valves action are elongate rod (6), triggered the pressure release of valve by the strut buckling of elongate rod (6).
2. the strut buckling flip-over type Decompression valves being applicable to high pressure operating mode according to claim 1, wherein the seal ring effective diameter chosen in piston (3) two ends is different, on the anchor ring between two seal rings that the pressure of medium will act on piston (3).
3. the strut buckling flip-over type Decompression valves being applicable to high pressure operating mode according to claim 1, the pressure medium load that wherein the annular useful area of piston (3) bears will act in elongate rod (6), when pressure medium is lower than setting value, pressure medium is less than the ultimate load of elongate rod (6) by the effective lifting surface area of the annular thrust load acted in elongate rod (6) of piston (3), elongate rod (6) keeps stable, piston (3) is in working position one, and device is in closed condition; When pressure medium exceedes setting value, pressure medium exceedes the ultimate load of elongate rod (6) by the effective lifting surface area of the annular thrust load acted in elongate rod (6) of piston (3), elongate rod (6) unstability causes its effective length moment significantly to diminish, piston (3) moves to working position two under pressure medium promotes, and the lower side flange (2) of now piston (3) disengaging makes device open and pressure release; After valve pressure release, can from valve body outside by promoting with the valve rod of piston (3) one, piston (3) to be resetted, then elongate rod (6) changed, valve recovers sealing state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520114852.3U CN204805646U (en) | 2015-02-17 | 2015-02-17 | Depression bar unstability triggers type relief valve suitable for high pressure operating mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520114852.3U CN204805646U (en) | 2015-02-17 | 2015-02-17 | Depression bar unstability triggers type relief valve suitable for high pressure operating mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204805646U true CN204805646U (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520114852.3U Active CN204805646U (en) | 2015-02-17 | 2015-02-17 | Depression bar unstability triggers type relief valve suitable for high pressure operating mode |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465430A (en) * | 2015-02-17 | 2016-04-06 | 江苏瑞朗博机械设备有限公司 | Decompression valve triggered through pressing rod instability and suitable for high-pressure working condition |
| CN105864472A (en) * | 2016-06-25 | 2016-08-17 | 王玉品 | Anti-explosion automatic pressure reducer for tap-water pipe |
| CN110017377A (en) * | 2018-01-09 | 2019-07-16 | 中国石油化工股份有限公司 | The safe pressure relief device and method and purposes of adjustable settings pressure value |
-
2015
- 2015-02-17 CN CN201520114852.3U patent/CN204805646U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465430A (en) * | 2015-02-17 | 2016-04-06 | 江苏瑞朗博机械设备有限公司 | Decompression valve triggered through pressing rod instability and suitable for high-pressure working condition |
| CN105864472A (en) * | 2016-06-25 | 2016-08-17 | 王玉品 | Anti-explosion automatic pressure reducer for tap-water pipe |
| CN110017377A (en) * | 2018-01-09 | 2019-07-16 | 中国石油化工股份有限公司 | The safe pressure relief device and method and purposes of adjustable settings pressure value |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160222 Address after: 211316, No. 12 Tan Avenue, Gaochun Economic Development Zone, Nanjing, Jiangsu Patentee after: JIANGSU RELIABLE MACHINERY EQUIPMENT Co.,Ltd. Address before: 100176 No. 2 North Yongchang Road, Beijing economic and Technological Development Zone, Beijing Patentee before: Liu Hailiang Patentee before: Zhang Zaixiao Patentee before: Wang Lei Patentee before: Zhao Shoujun |
|
| DD01 | Delivery of document by public notice |
Addressee: Zhao Shoujun Document name: payment instructions |
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| DD01 | Delivery of document by public notice |