CN202812339U - Novel pressure lever instability triggering pressure release valve - Google Patents
Novel pressure lever instability triggering pressure release valve Download PDFInfo
- Publication number
- CN202812339U CN202812339U CN201220274924.7U CN201220274924U CN202812339U CN 202812339 U CN202812339 U CN 202812339U CN 201220274924 U CN201220274924 U CN 201220274924U CN 202812339 U CN202812339 U CN 202812339U
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- valve
- pressure
- rod
- pressure release
- clack
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- 230000006837 decompression Effects 0.000 claims description 18
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 238000011144 upstream manufacturing Methods 0.000 abstract description 12
- 238000007789 sealing Methods 0.000 abstract description 6
- 230000001681 protective effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002153 concerted effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
The utility model discloses a novel pressure lever instability triggering pressure release valve which comprises the following main components: a valve body, a lower valve seat, a valve clack, an upper valve seat, a valve rod, a valve cover, a valve rod seat, a slender rod, a slender rod cage, a rod cap and a protective cover; with the structure that two pistons, which have the same section area and are provided with sealing rings, are respectively arranged at two ends of the valve clack, the upward pressure and the downward pressure of a downstream pipeline acting on the valve clack are the same and opposite in direction, and cancel each other out, so that the pressure release of a valve is determined only by pressure in an upstream pipeline, without being influenced by pressure in the downstream pipeline. When the pressure in the pipelines is lower than the specified point, the load loaded on the slender rod through the valve rod by the valve clack is smaller than the critical load, the pressure lever is kept stable, the axial thrust causes the valve clack and the valve seat to be in tight contact to achieve the sealing purpose; and when the pressure in the pipelines is higher than the specified point, the load born by the slender rod exceeds the critical load, resulting in instability and the thrust acting on the valve rod is gradually reduced, and the valve clack is separated from the valve seat under the action of the medium pressure, so that pressure release is achieved.
Description
Technical field
The utility model relates to a kind of Novel compression bar unstability flip-over type Decompression valves, and its pressure release is only determined by the pressure in the upstream line, is not subjected to downstream line pressure influence.
Background technique
Decompression valves generally is installed on the equipment or pipeline of locking system, automatically opens pressure release when equipment or manifold pressure surpass the Decompression valves setting pressure, to guarantee that pressure medium is no more than setting pressure in the e-quipment and pipe, protects e-quipment and pipe.
Present most Decompression valves is to be triggered by the pressure reduction between upstream line and the downstream line.The pressure variation of valve downstream pipeline can have influence on the triggering precision of valve.When downstream line pressure was very high, although the pressure of upstream line is also very high, because the pressure reduction between the pipeline of upstream and downstream is less, Decompression valves may not pressure release when reaching the pressure release setting value, causes potential safety hazard.
The utility model is a kind of Novel compression bar unstability flip-over type Decompression valves, and its pressure release only determines with the pressure independent of downstream line, to have higher pressure release precision by upstream line pressure.
The model utility content
The Novel compression bar unstability flip-over type Decompression valves that the utility model relates to, critical piece comprises valve body, lower valve base, flap, upper valve base, valve rod, valve gap, valve rod base, elongate rod, elongate rod cage, pole cap, safety cover.The control Decompression valves whether parts of pressure release is elongate rod, triggers the valve pressure release by the strut buckling of elongate rod, the two ends of flap respectively with one with the long-pending piston of the uniform section of seal ring.
Wherein, elongate rod is installed on the valve body outside, and an end and valve rod join, and the pole cap of the other end and elongate rod cage inboard joins.
When the pressure in the pipeline is lower than specified point, be carried in load on the elongate rod less than the Buckling Load of elongate rod by valve rod, it is stable that depression bar keeps, and its end thrust makes flap realize with the valve seat close contact sealing; When manifold pressure is higher than specified point, the thrust load that elongate rod is born surpasses ultimate load and strut buckling occurs, this moment, its effective length can significantly diminish moment, its thrust that acts on the valve rod can reduce suddenly, flap and valve seat break away under the effect of pressure medium each other, thereby realize pressure release.
The beneficial effects of the utility model are:
1. the trigger mechanism of Novel compression bar unstability flip-over type Decompression valves has very high pressure release precision according to the strut buckling principle design;
2. the triggering of the pressure release of Novel compression bar unstability flip-over type Decompression valves is only determined by the pressure of upstream line, with the pressure independent of downstream line.
Description of drawings
Fig. 1 is the structural drawing of the Novel compression bar unstability flip-over type safety relief valve that relates to of the utility model;
Fig. 2 is the schematic representation of the Novel compression bar unstability flip-over type safety relief valve nominal situation state that relates to of the utility model;
Fig. 3 is the schematic representation of the Novel compression bar unstability flip-over type safety relief valve pressure release state that relates to of the utility model.
Embodiment
The Novel compression bar unstability flip-over type Decompression valves that the utility model relates to, critical piece comprises valve body 1, lower valve base 2, flap 3, upper valve base 4, valve rod 5, valve gap 6, valve rod base 7, elongate rod 8, elongate rod cage 9, pole cap 10, safety cover 11.As shown in Figure 1.
Respectively its lower end piston is installed in the lower valve base 2 with the long-pending piston of the uniform section of seal ring with one at the two ends of flap 3, and the lower end piston face will bear the pressure medium of upstream line; Its upper end piston is installed in the upper valve base 4, and upper valve base 4 and the cavity that valve rod base 7 and valve gap 6 form are connected with ambient atmosphere by the aperture on the valve gap 6, and the pressure that the upper end piston face bears is atmospheric pressure.Equating that because the upper end piston of flap 3 and lower end piston cross-section are long-pending downstream line upwards pressure and downward pressure equal and opposite in direction, opposite direction to it, cancel out each other, is zero so flap 3 is subject to that the pressure of downstream line makes a concerted effort.Therefore, what flap 3 bore is only determined by upstream line pressure and atmospheric pressure with joint efforts, and atmospheric pressure can be thought a constant, so the pressure that flap 3 bears is in fact only determined by upstream line pressure.
Under nominal situation, flap 3 is carried in the strut buckling ultimate load that load on the elongate rod is lower than elongate rod 8 by valve rod 5, and elongate rod 8 keeps stable, and its end thrust makes flap 3 realize sealing with lower valve base 2 close contacts, makes valve be in closed condition.As shown in Figure 2.
Under damage, when upstream line pressure has surpassed the pressure release setting value, the thrust load that elongate rod 8 is born surpasses its ultimate load, strut buckling occurs, this moment, its effective length can significantly diminish moment, its thrust that acts on the valve rod 5 can reduce suddenly, and flap 3 breaks away under the effect of pressure medium each other with lower valve base 2, thereby realizes pressure release.As shown in Figure 3.
After system returned to nominal situation from damage, equipment or manifold pressure returned under the safety pressure.The site operation personnel at first closes the upstream line valve, makes valve no longer bear pressure.Then by external force valve rod 5 is pushed away downwards, make flap 3 lower ends enter lower valve base 2.Then the elongate rod 8 that more renews, and fastening pole cap 10.At this moment, the Novel compression bar unstability flip-over type Decompression valves that relates to of the utility model is just finished and has been resetted.
Disclosed all features in this specification, or the step in disclosed all methods or the process except the special type and/or step of mutual repulsion, all can make up by any way.
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalence or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
The utility model is not limited to aforesaid embodiment.The utility model expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (1)
1. Novel compression bar unstability flip-over type Decompression valves; critical piece comprises valve body (1); lower valve base (2); flap (3); upper valve base (4); valve rod (5); valve gap (6); valve rod base (7); elongate rod (8); elongate rod cage (9); pole cap (10); safety cover (11); it is characterized in that: the control Decompression valves whether parts of pressure release is elongate rod (8); trigger the valve pressure release by the strut buckling of elongate rod (8), the two ends of flap (3) respectively with one with the long-pending piston of the uniform section of seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220274924.7U CN202812339U (en) | 2012-06-08 | 2012-06-08 | Novel pressure lever instability triggering pressure release valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220274924.7U CN202812339U (en) | 2012-06-08 | 2012-06-08 | Novel pressure lever instability triggering pressure release valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202812339U true CN202812339U (en) | 2013-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220274924.7U Expired - Lifetime CN202812339U (en) | 2012-06-08 | 2012-06-08 | Novel pressure lever instability triggering pressure release valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN202812339U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470827A (en) * | 2012-06-08 | 2013-12-25 | 刘海亮 | Novel compression bar buckling triggering type pressure release valve |
| CN105318052A (en) * | 2015-02-17 | 2016-02-10 | 刘海亮 | Low-pressure working condition compression bar destabilizing trigger type pressure relief device |
| CN105465431A (en) * | 2015-02-28 | 2016-04-06 | 江苏瑞朗博机械设备有限公司 | Modular design and pressure bar destabilizing trigger type relief valve under high pressure working condition |
| 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 |
| CN106321915A (en) * | 2015-06-30 | 2017-01-11 | 江苏瑞朗博机械设备有限公司 | Automatic control anti-backfire system for valve |
| CN106704656A (en) * | 2015-08-14 | 2017-05-24 | 北京航天石化技术装备工程有限公司 | Pilot-operated blasting type pressure relief device |
| 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 |
-
2012
- 2012-06-08 CN CN201220274924.7U patent/CN202812339U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470827A (en) * | 2012-06-08 | 2013-12-25 | 刘海亮 | Novel compression bar buckling triggering type pressure release valve |
| CN105318052A (en) * | 2015-02-17 | 2016-02-10 | 刘海亮 | Low-pressure working condition compression bar destabilizing trigger type pressure relief device |
| 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 |
| CN105465431A (en) * | 2015-02-28 | 2016-04-06 | 江苏瑞朗博机械设备有限公司 | Modular design and pressure bar destabilizing trigger type relief valve under high pressure working condition |
| CN106321915A (en) * | 2015-06-30 | 2017-01-11 | 江苏瑞朗博机械设备有限公司 | Automatic control anti-backfire system for valve |
| CN106321915B (en) * | 2015-06-30 | 2017-11-17 | 江苏瑞朗博机械设备有限公司 | A kind of valve automatically controls anti-backfire system |
| CN106704656A (en) * | 2015-08-14 | 2017-05-24 | 北京航天石化技术装备工程有限公司 | Pilot-operated blasting type pressure relief device |
| 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 | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: WANG LEI WANG FUKAI Effective date: 20140918 Owner name: JIANGSU RUILANGBO MACHINERY EQUIPMENT CO., LTD. Free format text: FORMER OWNER: LIU HAILIANG Effective date: 20140918 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100076 DAXING, BEIJING TO: 211316 NANJING, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140918 Address after: 211316, No. 12 Tan Avenue, Gaochun Economic Development Zone, Nanjing, Jiangsu Patentee after: JIANGSU RELIABLE MACHINERY EQUIPMENT Co.,Ltd. Address before: 100076 Beijing city Daxing District Jiugong Town Hall Road No. 15 No. 23 building 3 unit 1101 Patentee before: Liu Hailiang Patentee before: Wang Lei Patentee before: Wang Fukai |
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| DD01 | Delivery of document by public notice |
Addressee: Liu Hailiang Document name: Notification of Passing Examination on Formalities |
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| CX01 | Expiry of patent term |
Granted publication date: 20130320 |
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| CX01 | Expiry of patent term | ||
| DD01 | Delivery of document by public notice |
Addressee: Jiangsu Ruilangbo Machinery Equipment Co.,Ltd. patent The person in charge Document name: Notice of Patent Expiration and Termination |
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| DD01 | Delivery of document by public notice |