CN105465429A - Decompression valve triggered through pin bending - Google Patents
Decompression valve triggered through pin bending Download PDFInfo
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- CN105465429A CN105465429A CN201510086313.8A CN201510086313A CN105465429A CN 105465429 A CN105465429 A CN 105465429A CN 201510086313 A CN201510086313 A CN 201510086313A CN 105465429 A CN105465429 A CN 105465429A
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- pin
- valve
- pressure release
- decompression valves
- valve rod
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Abstract
The invention provides a decompression valve triggered through pin bending. The decompression valve mainly comprises a protection cover, a fusible nut, a pin, a head cover, a valve body, a valve clack, an inlet flange, a valve seat, a pin barrel, a valve rod, a proximity switch, a pin cage and a clamping nut. The pin is the critical part for triggering decompression. When the pressure inside the system is lower than a specific point, a load borne by the pin is smaller than a critical load, so that the pin is in a stable state, and thus sealing of the valve is achieved; when the pressure inside the system is higher than the specific point, a load borne by the pin exceeds the critical load, so that the pin is instable and bent, and hence decompressing of the valve is triggered; after the valve is decompressed, the pin can be replaced after the valve rod is reset from the outside of the valve body. The decompression valve can be installed on equipment or a pipeline, automatic decompressing is conducted when the pressure exceeds the set pressure, and therefore the equipment and the pipeline are protected.
Description
Technical field
The present invention relates to a kind of pressure relief device, relate to a kind of Decompression valves being bent triggering under setting pressure by pin unstability more specifically.
Background technique
Pressure relief device is generally installed on pressurized container or pipeline, automatically opens pressure release when container or manifold pressure exceed pressure relief device setting pressure, to ensure that container and pipeline internal medium pressure are no more than setting pressure, and protection container and pipeline.
The present invention is a kind of Decompression valves being bent triggering by pin, and its design is the principle based on strut buckling, and the active force produced when pressure medium makes the pin supporting flap bend, and namely during strut buckling, flap and valve seat depart from and realize pressure release.
Through looking into, at present not based on the Decompression valves being bent triggering by pin unstability of strut buckling principle design.
Summary of the invention
The pin bent flip-over type Decompression valves that the present invention relates to; critical piece comprises safety cover 1, meltable nut 2, pin 3, top cover 4, valve body 5, flap 6, inlet flange 7, valve seat 8, pin cylinder 9, valve rod 10, proximity switch 11, pin cage 12, clamping nut 13; the parts controlling pressure relief device whether pressure release are pins 3, trigger valve pressure release by the unstability of pin 3 is bending.
Wherein, it is outside that pin 3 is installed on valve body 5, and one end connects with valve rod 10, and the other end connects with inside meltable nut 2; When system internal pressure is lower than specified point, the load that pin 3 bears is less than ultimate load and pressure bar stabilization, realizes valve seal; When system internal pressure is higher than specified point, the load that pin 3 bears exceedes ultimate load and strut buckling, and now its effective length can significantly diminish moment, and its thrust acted on valve rod 10 suddenly can reduce and triggers valve pressure release.
There is strut buckling at pin 3 and after valve pressure release, changed after valve rod 10 can being resetted from valve body 5 outside.
In addition, when installing surrounding's breaking out of fire of container of the present invention or pipeline, meltable nut 2 can melt, and its thrust acted on valve rod 10 can reduce suddenly, and flap 6 can be separated instantaneously with valve seat 8, realizes the object of pressure release.
In addition, safety cover 1 can stop that foreign matter enters pin cage 12, and can be observed the state of pin 3 and valve rod 10 when not unloading; Pin cylinder 9, for the pin that stores for future use, can obtain pin 3 immediately, save the replacing construction of pin 3 after making the pressure recover of operator in container or pipeline normal from pin cylinder 9; Proximity switch 11 can respond to the position of valve rod 10, its signal can teletransmission to control room computer system, and then realize monitoring the position of valve rod 10 in control room, thus judge that valve is in pressure release state or closed condition.
Accompanying drawing explanation
Fig. 1 is the structure of a kind of pin bent flip-over type Decompression valves that the present invention relates to;
Fig. 2 is the schematic diagram of a kind of pin bent flip-over type Decompression valves normal working that the present invention relates to;
Fig. 3 is the schematic diagram of a kind of pin bent flip-over type Decompression valves pressure release state after pin unstability bends that the present invention relates to;
Fig. 4 is the schematic diagram of a kind of pin bent flip-over type Decompression valves pressure release state after meltable nut fusing that the present invention relates to;
Embodiment
Critical piece of the present invention comprises safety cover 1, meltable nut 2, pin 3, top cover 4, valve body 5, flap 6, inlet flange 7, valve seat 8, pin cylinder 9, valve rod 10, proximity switch 11, pin cage 12, clamping nut 13, as shown in Figure 1.
Flap 6 and valve seat 8 are Sealings of Decompression valves, and when flap 6 and valve seat 8 close contact, Decompression valves realizes sealing, and when flap 6 is separated with valve seat 8, Decompression valves realizes pressure release.
One end that valve rod 10 is positioned at valve body 5 inside is connected with flap 6, and the one end being positioned at valve body 5 outside connects with pin 3, and the thrust that pin 3 acts on valve rod 10 can be passed to flap 6.
Pin 3 is critical components of control valve sealing and pressure release, and it is outside that it is installed on valve body 5, and one end connects with meltable nut 2, the other end connects with valve rod 10, by valve rod 10 to flap 6 loaded load, the contact controlling flap 6 and valve seat 8 be separated, and then control sealing and the pressure release of Decompression valves.Safety cover 1 can stop that foreign matter enters pin cage 12, prevents foreign matter from having an impact for the sealing of pressure relief device and pressure release, and can observe the state of pin 3 and valve rod 10 when not unloaded by safety cover 1.
The sealing of pin 3 control valve is as follows with the principle of pressure release:
In normal conditions, container or manifold pressure are under the safety pressure that locking system can bear, the pressure reduction of Decompression valves high pressure side and low voltage side is less than setting pressure, and the thrust load F that flap 6 is carried on pin 3 by valve rod 10 also will be less than the Buckling Load F of pin 3
cr, pin 3 is in steady state, and the thrust of pin 3 can push flap 6 to valve seat 8 by valve rod 10, makes flap 6 and valve seat 8 close contact, thus ensure that the sealing of valve, realize the effect of valve closing.As shown in Figure 2.
Under damage, container or manifold pressure rise on the safety pressure of locking system, and the pressure reduction P of pressure relief device high pressure side and low voltage side is more than or equal to vent pressure P
cr, the thrust load F that flap 6 is carried on pin 3 by valve rod 10 also will be more than or equal to the Buckling Load F of pin 3
cr, pin 3 can bend instantaneously, and produces plastic deformation, and effective length can significantly diminish moment simultaneously, and its thrust acted on valve rod 10 can reduce suddenly, and flap 6 can be separated instantaneously with valve seat 8, thus reaches the object of accurate pressure release.As shown in Figure 3.
Wherein, one end that valve rod 10 is positioned at valve body 5 outside connects with pin 3, and its one end being positioned at valve body 5 inside is connected with flap 6, and the thrust that pin 3 is applied to it can be passed to flap 6; After flap 6 and valve seat 8 depart from and make valve pressure release, valve rod 10 can reset from valve body 5 outside by external force by site operation personnel, and pin 3 is changed after close contact by flap 6 and valve seat 8 again, and valve recovers sealing state, realizes the reset of pressure relief device.
In addition, when installing surrounding's breaking out of fire of container of the present invention or pipeline, meltable nut 2 can melt, and its thrust acted on valve rod 10 can reduce suddenly, and flap 6 can be separated instantaneously with valve seat 8, realizes the object of pressure release.As shown in Figure 4.
In addition, safety cover 1 can stop that foreign matter enters pin cage 12, and can prevent the limbs of operator from entering pin cage 12 by mistake; Pin cylinder 9, for the pin that stores for future use, can obtain pin 3 immediately, save the replacing construction of pin 3 after making the pressure recover of operator in container or pipeline normal from pin cylinder 9.
Proximity switch 11 can respond to the position of valve rod 10, its signal can teletransmission to control room computer system, when Decompression valves is in sealing state, proximity switch 11 is responded to less than valve rod 10, and the computer system in control room receives this signal and can be read as Decompression valves and be in sealing state; After Decompression valves is opened, proximity switch 11 has sensed valve rod 10, computer system in control room receives this signal and can be read as Decompression valves and opened and there occurs pressure release, realize the position monitoring valve rod 10 in control room thus, thus judge that valve is in pressure release state or closed condition.
The invention has the beneficial effects as follows, for common Spring-Loaded Pressure Relief Valve, its structure is comparatively simple, and this invention automatically can open pressure release under fire working, and can remote monitoring its be in closed condition or opening state.
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 (5)
1. a pin bent flip-over type Decompression valves; critical piece comprises safety cover (1), meltable nut (2), pin (3), top cover (4), valve body (5), flap (6), inlet flange (7), valve seat (8), pin cylinder (9), valve rod (10), proximity switch (11), pin cage (12), clamping nut (13); it is characterized in that: the parts controlling Decompression valves whether pressure release are pin (3), trigger valve pressure release by the unstability of pin (3) is bending.
2. pin bent flip-over type Decompression valves according to claim 1, wherein when system internal pressure is lower than specified point, the load that pin (3) bears is less than ultimate load and is in steady state, realizes valve seal; When system internal pressure is higher than specified point, the load that pin (3) bears exceedes ultimate load and unstability bends, and triggers valve pressure release; After valve pressure release, pin (3) can be changed after valve rod (10) reset from valve body (5) is outside.
3. pin bent flip-over type Decompression valves according to claim 1, meltable nut (2) wherein can melt when breaking out of fire, now its thrust acted on valve rod (10) can reduce suddenly, and flap (6) can realize pressure release being separated instantaneously with valve seat (8).
4. pin bent flip-over type Decompression valves according to claim 1, safety cover (1) wherein can stop that foreign matter enters pin cage (12), and the limbs of operator can be prevented to be strayed into pin cage (12).
5. pin bent flip-over type Decompression valves according to claim 1, proximity switch (11) wherein can respond to the position of valve rod (10), its signal can teletransmission to control room computer system, and then realize the position monitoring valve rod (10) in control room, thus judge that valve is in pressure release state or closed condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510086313.8A CN105465429A (en) | 2015-02-17 | 2015-02-17 | Decompression valve triggered through pin bending |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510086313.8A CN105465429A (en) | 2015-02-17 | 2015-02-17 | Decompression valve triggered through pin bending |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105465429A true CN105465429A (en) | 2016-04-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510086313.8A Withdrawn CN105465429A (en) | 2015-02-17 | 2015-02-17 | Decompression valve triggered through pin bending |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105465429A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107472738A (en) * | 2017-09-11 | 2017-12-15 | 天津市鑫天元机械设备有限公司 | A kind of constant pressure condensed-water recovering 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 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2856643Y (en) * | 2005-11-09 | 2007-01-10 | 苏州市燃气设备阀门制造有限公司 | Safety cut-off valve |
| CN201096214Y (en) * | 2007-11-02 | 2008-08-06 | 营口恒星阀业制造有限公司 | Excessive pressure decompression valve |
| JP2009293718A (en) * | 2008-06-06 | 2009-12-17 | Chugoku Electric Power Co Inc:The | Safety valve and power generation plant |
| CN202812338U (en) * | 2012-02-20 | 2013-03-20 | 刘海亮 | Pressure bar instability trigger type decompression valve |
| CN103470827A (en) * | 2012-06-08 | 2013-12-25 | 刘海亮 | Novel compression bar buckling triggering type pressure release valve |
| JP2014017009A (en) * | 2013-09-17 | 2014-01-30 | Fuji Koki Corp | Pressure reduction valve |
| CN203703294U (en) * | 2013-11-30 | 2014-07-09 | 天津思容阀门有限公司 | Multi-protection emergency cut-off valve |
| CN204477406U (en) * | 2015-02-17 | 2015-07-15 | 刘海亮 | A kind of pin bent flip-over type Decompression valves |
-
2015
- 2015-02-17 CN CN201510086313.8A patent/CN105465429A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2856643Y (en) * | 2005-11-09 | 2007-01-10 | 苏州市燃气设备阀门制造有限公司 | Safety cut-off valve |
| CN201096214Y (en) * | 2007-11-02 | 2008-08-06 | 营口恒星阀业制造有限公司 | Excessive pressure decompression valve |
| JP2009293718A (en) * | 2008-06-06 | 2009-12-17 | Chugoku Electric Power Co Inc:The | Safety valve and power generation plant |
| CN202812338U (en) * | 2012-02-20 | 2013-03-20 | 刘海亮 | Pressure bar instability trigger type decompression valve |
| CN103470827A (en) * | 2012-06-08 | 2013-12-25 | 刘海亮 | Novel compression bar buckling triggering type pressure release valve |
| JP2014017009A (en) * | 2013-09-17 | 2014-01-30 | Fuji Koki Corp | Pressure reduction valve |
| CN203703294U (en) * | 2013-11-30 | 2014-07-09 | 天津思容阀门有限公司 | Multi-protection emergency cut-off valve |
| CN204477406U (en) * | 2015-02-17 | 2015-07-15 | 刘海亮 | A kind of pin bent flip-over type Decompression valves |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107472738A (en) * | 2017-09-11 | 2017-12-15 | 天津市鑫天元机械设备有限公司 | A kind of constant pressure condensed-water recovering 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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Application publication date: 20160406 |
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