CN105465431A - Modular design and pressure bar destabilizing trigger type relief valve under high pressure working condition - Google Patents
Modular design and pressure bar destabilizing trigger type relief valve under high pressure working condition Download PDFInfo
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- CN105465431A CN105465431A CN201510091252.4A CN201510091252A CN105465431A CN 105465431 A CN105465431 A CN 105465431A CN 201510091252 A CN201510091252 A CN 201510091252A CN 105465431 A CN105465431 A CN 105465431A
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- piston
- high pressure
- modular design
- destabilizing
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Abstract
The invention discloses a modular design and pressure bar destabilizing trigger type relief valve under the high pressure working condition. The relief valve is triggered by means of the Euler law of elongated bar destabilizing. The destabilizing force of an elongated bar mainly comes from the thrust of a piston under the action of the medium pressure. When the thrust exerted by the medium pressure on the piston is larger than the critical load of the elongated bar, the elongated bar is destabilized and loses the bearing capacity, the piston loses the supporting force from the elongated bar and is pushed by the medium pressure to be separated from a sealing surface of a lining of a valve body, and the relief valve is switched from the closed state to the opened state so as to achieve the purpose of pressure relief. The effective stressed area of the piston can be reasonably designed so that the piston can be applied to the high pressure working condition. Meanwhile, components such as the piston, the lining and a valve cover are modularly designed, so that the components are conveniently and quickly replaced when breaking down or being abraded.
Description
Technical field
The present invention relates to a kind of safety valve, relate to a kind of modular design more specifically, and the Decompression valves can automatically can opened when pressure exceedes setting value.
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 Decompression valves of pressure release automatically under often needing to be arranged on superpressure operating mode.
This use is novel is a kind of modular design high pressure operating mode strut buckling flip-over type Decompression valves, can be applicable to high pressure operating mode, and have very high pressure release precision by the effective lifting surface area of adjustment piston.
Summary of the invention
The modular design high pressure operating mode strut buckling flip-over type Decompression valves that the present invention relates to, critical piece comprises valve body, piston, liner, valve gap, pin cage, elongate rod and nut.
Wherein, trigger component is elongate rod, and it is installed on valve body outside, and one end connects with piston, and the other end connects with the nut being installed on pin cage.When the pressure medium of valve body 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 from valve body 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, the sealing surface that now piston is lining with in departing from makes device open, thus achieves the object that superpressure operating mode lower device opens pressure release automatically.
The modular design high pressure operating mode strut buckling flip-over type Decompression valves that the present invention relates to, the effective diameter chosen of its piston two ends seal ring 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.
The modular design high pressure operating mode strut buckling flip-over type Decompression valves that the present invention relates to, its piston, liner have become a module with component combinations such as valve gaps.Can overall extract in valve body.When this safety valve application is when wearing and tearing in more serious medium, can regularly change this module, and without the need to being disassembled from pipeline by valve body, it is convenient to change.
Accompanying drawing explanation
Fig. 1 is the main structure figure of the modular design high pressure operating mode strut buckling flip-over type Decompression valves that the present invention relates to;
Fig. 2 is two piston seal loop diameters and the effective lifting surface area schematic diagram of annular on the modular design high pressure operating mode strut buckling flip-over type Decompression valves that the present invention relates to;
Fig. 3 is the schematic diagram of the modular design high pressure operating mode strut buckling flip-over type Decompression valves module that the present invention relates to when detaching;
Schematic diagram when Fig. 4 is the modular design high pressure operating mode strut buckling flip-over type Decompression valves normal state that the present invention relates to;
Schematic diagram when Fig. 5 is the modular design high pressure operating mode strut buckling flip-over type Decompression valves abnormal condition that the present invention relates to;
Embodiment
Modular design high pressure operating mode strut buckling flip-over type Decompression valves, critical piece comprises valve body 1, piston 2, liner 3, valve gap 4, pin cage 5, elongate rod 6 and nut 7.Wherein elongate rod 6 is parts of trigger action, and its strut buckling principle applying elongate rod triggers the pressure release of valve.See Fig. 1.
In normal conditions, medium flows into valve body 1 from right side adapter as shown in Figure 1.After valve triggers pressure release, medium can be discharged from downside adapter as shown in Figure 1.
Wherein, the seal ring effective diameter chosen in piston 2 two ends is different, the pressure of medium by act on piston 2 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.
The external diameter supposing the small sealing ring of piston 2 is d, supposes that the external diameter of big sealing ring is D.Then the effectively stressed 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 the specific embodiment of the present invention below.
In normal conditions, when the pressure medium of valve body 1 upstream is lower than setting value, pressure medium is less than the ultimate load of elongate rod 6 by piston 2 thrust load acted in elongate rod 6, and elongate rod 6 keeps stable, piston 2 is in working position one, and device is in closed condition.See Fig. 4.
Under damage, when the pressure medium of valve body 1 upstream reaches setting value, pressure medium is greater than the ultimate load of elongate rod 6 by piston 2 thrust load acted in elongate rod 6, elongate rod 6 unstability causes its effective length moment significantly to diminish, piston 2 moves to working position two under pressure medium promotes, and the sealing surface that now piston 2 is lining with in departing from makes device open pressure release.See Fig. 5.
When this safety valve application is when wearing and tearing in more serious medium, the wearing and tearing of piston 2 and liner 3 can be relatively serious.Have employed modular design in this invention, by piston 2, the parts such as liner 3 and valve gap 4 are designed to a module.This module overall can be dismantled and shifts out from valve body 1.As shown in Figure 3.When piston 2, after wearing and tearing appear in the module that liner 3 and valve gap 4 form, integral replacing can be carried out to module, and valve body 1 need not be disassembled from system pipeline.Make maintain and replace more convenient.
In addition, 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 present invention is not limited to aforesaid embodiment.The present invention 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 (4)
1. a modular design high pressure operating mode strut buckling flip-over type Decompression valves, critical piece comprises valve body (1), piston (2), liner (3), valve gap (4), pin cage (5), elongate rod (6) and nut (7).
2. modular design high pressure operating mode strut buckling flip-over type Decompression valves according to claim 1, its trigger component is the elongate rod (6) of the Euler law applying strut buckling, and its ultimate load can be changed by adjustment material and slenderness ratio, and then change the setting pressure of this Decompression valves.
3. modular design high pressure operating mode strut buckling flip-over type Decompression valves according to claim 1, its piston (2), liner (3), the parts such as valve gap (4) form a module that can overall shift out from valve body (1), are convenient to maintain and replace.
4. modular design high pressure operating mode strut buckling flip-over type Decompression valves according to claim 1, wherein the seal ring effective diameter chosen in piston (2) two ends is different, on the anchor ring between two seal rings that the pressure of medium will act on piston (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510091252.4A CN105465431A (en) | 2015-02-28 | 2015-02-28 | Modular design and pressure bar destabilizing trigger type relief valve under high pressure working condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510091252.4A CN105465431A (en) | 2015-02-28 | 2015-02-28 | Modular design and pressure bar destabilizing trigger type relief valve under high pressure working condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105465431A true CN105465431A (en) | 2016-04-06 |
Family
ID=55603443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510091252.4A Withdrawn CN105465431A (en) | 2015-02-28 | 2015-02-28 | Modular design and pressure bar destabilizing trigger type relief valve under high pressure working condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105465431A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715838A (en) * | 2016-05-10 | 2016-06-29 | 无锡斯沃特流体控制技术有限公司 | Slender-rod pressure release valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004169892A (en) * | 2002-11-22 | 2004-06-17 | National Institute Of Advanced Industrial & Technology | Working pressure variable type pressure relief valve |
| WO2004111452A1 (en) * | 2003-06-13 | 2004-12-23 | Dietmar Kaiser Ag | High-pressure pump |
| CN202731836U (en) * | 2012-06-08 | 2013-02-13 | 刘海亮 | Novel pressure rod destabilization triggered wellhead shut-off valve |
| CN202812338U (en) * | 2012-02-20 | 2013-03-20 | 刘海亮 | Pressure bar instability trigger type decompression valve |
| CN202812339U (en) * | 2012-06-08 | 2013-03-20 | 刘海亮 | Novel pressure lever instability triggering pressure release valve |
| CN103470218A (en) * | 2012-06-08 | 2013-12-25 | 刘海亮 | Novel low-pressure triggering pressure lever instability shut-off valve |
| CN104132157A (en) * | 2013-05-02 | 2014-11-05 | 刘海亮 | Forced seal valve with modular design and angular travel operation |
| CN204805648U (en) * | 2015-02-28 | 2015-11-25 | 刘海亮 | Modularized design high pressure operating mode depression bar unstability triggers type relief valve |
-
2015
- 2015-02-28 CN CN201510091252.4A patent/CN105465431A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004169892A (en) * | 2002-11-22 | 2004-06-17 | National Institute Of Advanced Industrial & Technology | Working pressure variable type pressure relief valve |
| WO2004111452A1 (en) * | 2003-06-13 | 2004-12-23 | Dietmar Kaiser Ag | High-pressure pump |
| CN202812338U (en) * | 2012-02-20 | 2013-03-20 | 刘海亮 | Pressure bar instability trigger type decompression valve |
| CN202731836U (en) * | 2012-06-08 | 2013-02-13 | 刘海亮 | Novel pressure rod destabilization triggered wellhead shut-off valve |
| CN202812339U (en) * | 2012-06-08 | 2013-03-20 | 刘海亮 | Novel pressure lever instability triggering pressure release valve |
| CN103470218A (en) * | 2012-06-08 | 2013-12-25 | 刘海亮 | Novel low-pressure triggering pressure lever instability shut-off valve |
| CN104132157A (en) * | 2013-05-02 | 2014-11-05 | 刘海亮 | Forced seal valve with modular design and angular travel operation |
| CN204805648U (en) * | 2015-02-28 | 2015-11-25 | 刘海亮 | Modularized design high pressure operating mode depression bar unstability triggers type relief valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715838A (en) * | 2016-05-10 | 2016-06-29 | 无锡斯沃特流体控制技术有限公司 | Slender-rod pressure release valve |
| CN105715838B (en) * | 2016-05-10 | 2018-06-22 | 无锡斯沃特流体控制技术有限公司 | Elongate rod relief valve |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160406 |