CN106402443A - Safety valve provided with automatic inflation and deflation device - Google Patents
Safety valve provided with automatic inflation and deflation device Download PDFInfo
- Publication number
- CN106402443A CN106402443A CN201610946818.1A CN201610946818A CN106402443A CN 106402443 A CN106402443 A CN 106402443A CN 201610946818 A CN201610946818 A CN 201610946818A CN 106402443 A CN106402443 A CN 106402443A
- Authority
- CN
- China
- Prior art keywords
- valve
- air
- air inlet
- inflatable device
- automatic inflatable
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
Abstract
The invention discloses a safety valve provided with an automatic inflation and deflation device. Convenient adjustment and rapid online testing of opening pressure of the safety valve can be achieved through a closed cavity defined by a corrugated pipe, a valve deck and the upper end of a valve rod and the automatic inflation and deflation device; it can be guaranteed that the opening pressure is stable without drifting in long-term use; and the problems that pressure adjustment of a regular disc spring or spring safety valve is not convenient, and the opening pressure is prone to drifting and cannot be rapidly tested are effectively solved.
Description
Technical field
The present invention relates to a kind of relief valve with automatic inflatable device of air, the high pressure applying to the industries such as petrochemical industry is defeated
Send the superpressure safeguard protection of pipeline and pressure vessel.
Background technology
Relief valve, as a kind of overpressure protection element, is widely used in high-pressure delivery pipeline and the pressure of the industries such as petrochemical industry
On force container.When the opening pressure of safety valve point needing is higher（Typically >=40MPa）When, need the bearing capacity of flexible member very
Height, conventional high-pressure safety valve typically adopts disc spring or big rigidity cylindrical spring as flexible member.But this presence is significantly scarce
Point, mainly have following some：
（1）After working online for a long time, disc spring or spring can occur creep and relax, and the Opening pressure point of valve can be led to send out
Raw drift, the normal work of impact valve；
（2）Because disc spring or spring rate are larger, small deflection may result in larger active force change, therefore valve
Door adjusts point difficult it may be necessary to repeatedly adjustment can be only achieved goal pressure point, the working life of impact valve repeatedly；
（3）Actual force due to disc spring or spring cannot measure, and the actual unlatching point value of therefore valve cannot be quick
Measure, need to carry out special aqueous medium and open test, also cannot on-line checking, increased the working service cost of relief valve.
Content of the invention
The technology solve problem of the present invention：For overcoming the deficiencies in the prior art, one kind is provided to carry automatic inflatable device of air
Relief valve, solve the problems, such as that conventional disc spring or spring loaded safety valve are adjusted point inconvenience, pressure point drift and cannot quickly be measured.
The technical solution of the present invention：
A kind of relief valve with automatic inflatable device of air, including corrugated tube, valve gap, changeover portion, valve rod, housing, sealing
Ball and check valve,
Valve gap and housing are the cavity-like body of one end blind hole, are connected by the changeover portion of hollow between the two, and valve rod is placed in
In the cavity that valve gap, housing and changeover portion surround, valve rod is I-shape construction, and upper end is connected with one end of corrugated tube, corrugated tube
The other end be connected with valve gap bottom, corrugated tube, valve gap and valve rod upper end surround one closing cavity；
Valve rod lower end and changeover portion are dynamic sealing, and valve gap is provided with check valve, and check valve and the external world have detection and charge and discharge
The automatic inflatable device of air of airway dysfunction connects, and housing lower end has air inlet, and side has gas outlet, between air inlet and valve rod
Being provided with can be to the ball sealer of air inlet sealing, and changeover portion side has passage.
After check valve is connected with automatic inflatable device of air, automatic inflatable device of air detects and is converted to the unlatching pressure of relief valve
Power, and the Opening pressure value of adjustable safety valve, when the gas pressure of air inlet reaches Opening pressure value, gas push seals
Spherical zone ovable valve stem moves upwards, and ball sealer releases and air inlet is sealed, and gas is discharged from gas outlet；Gas pressure when air inlet
When being not up to Opening pressure value, ball sealer keeps sealing to air inlet.
Also include cushion pad, be arranged on valve rod upper end.
Gas acts on the area of effective area on corrugated tube and air inlet than for 30：1～40：1.
The sealing property of the closed cavity that corrugated tube, valve gap and valve rod upper end surround can reach 10-8Pa.m3/s.
The present invention compared with prior art has the advantages that：
（1）The design of the closed cavity that the present invention is surrounded by corrugated tube, valve gap and valve rod upper end, additional automatic inflatable/air
Device, the convenient of achievable opening pressure of safety valve adjusts and quickly measures online, and can ensure Opening pressure in life-time service
Stable do not drift about, efficiently solve conventional disc spring or the adjustment inconvenience of spring loaded safety valve pressure, Opening pressure easily drifted about and cannot
The quick problem measuring；
（2）Gas of the present invention acts on the area of effective area on corrugated tube and air inlet than for 30：1～40：1,
It is only necessary to pour lower pressure in closed cavity when Opening pressure requires higher, operate and safeguard is safe；
（3）The sealing property of the closed cavity that corrugated tube of the present invention, valve gap and valve rod upper end surround can reach 10-8Pa.m3/
S, good seal performance.
Brief description
Fig. 1 is present configuration schematic diagram.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of relief valve with automatic inflatable device of air, including corrugated tube 1, valve gap 5, changeover portion 4, valve
Bar 2, housing 7, ball sealer 6, cushion pad 9 and check valve 10,
Valve gap 5 and housing 7 are the cavity-like body of one end blind hole, are connected by the changeover portion 4 of hollow between the two, valve rod 2
It is placed in the cavity that valve gap 5, housing 7 and changeover portion 4 surround, valve rod 2 is I-shape construction, upper end is connected with one end of corrugated tube 1
Connect, the other end of corrugated tube 1 is connected with valve gap 5 bottom, corrugated tube 1, valve gap 5 and valve rod 2 upper end surround the cavity of a closing；
Gas acts on the area of effective area on corrugated tube 1 and air inlet than for 30：1～40：1；Cushion pad 9 is arranged on valve rod 2
Upper end, during shock from cushioning effect；
Valve rod 2 lower end and changeover portion 4 are dynamic sealing, and valve gap 5 is provided with check valve 10, and check valve 10 and the external world have detection
Connect with the automatic inflatable device of air of charging-discharging function, housing 7 lower end has air inlet, side has a gas outlet, air inlet with
Being provided between valve rod 2 can be to the ball sealer 6 of air inlet sealing, and changeover portion 4 side has passage.
After check valve 10 is connected with automatic inflatable device of air, automatic inflatable device of air detects and is converted to the unlatching of relief valve
Pressure, and the Opening pressure value of adjustable safety valve, when the gas pressure of air inlet reaches Opening pressure value, gas push is close
Blocking 6 band ovable valve stem 2 moves upwards, and ball sealer 6 releases and air inlet is sealed, and gas is discharged from gas outlet；Gas when air inlet
When body pressure is not up to Opening pressure value, ball sealer 6 keeps sealing to air inlet.
The sealing property of the closed cavity that corrugated tube 1 of the present invention, valve gap 5 and valve rod 2 upper end surround can reach 10-8Pa.m3/
s.
Specifically, the relief valve of present invention design is corrugated tube actuator formula relief valve, entrance and working media delivery pipe
Line or pressure vessel are connected, and outlet is directly communicated with ambient atmosphere.Corrugated tube actuator be one section of U-shaped corrugated tube 1 with valve rod 2 and
Bellows seal 3 is welded as a whole, that is, welding position 2 shown in Fig. 1,3.Corrugated tube actuator is welded as a whole with valve gap 5 again, that is,
Welding position 1 shown in Fig. 1, and then be connected with changeover portion 4 by flange bolt 8, material is thus formed the closing back pressure in diagram
Chamber.Changeover portion is threaded connection with housing 7, and valve rod 2 is pressed on ball sealer 6, and ball sealer 6 realizes sealing with housing valve seat.
During relief valve normal work, the back pressure cavity charged pressure in Fig. 1 is P0Nitrogen.Nitrogen acts on corrugated tube start
On device, and then act on valve rod 2 and ball sealer 6, sealing is realized to working media.When working medium pressure rises to opening point
During Ps, the working media and valve rod dynamic balance to ball sealer, valve reaches unlatching critical state, and the stress relation of ball sealer is：
Wherein D is the effective diameter of corrugated tube, and d is diameter at valve seat.
6 times that D is d, then P is taken during design0It is about the 1/36 of Ps.When Opening pressure point Ps is 70MPa, then the back of the body needing
Pressure P0It is about 1.8MPa.By the ratio of corrugated tube effective diameter and valve-seat diameter, relatively low Pressure in Back-pressure Cavity can achieve very
High Opening pressure point.Meanwhile, there is clear and definite one-to-one relationship between Pressure in Back-pressure Cavity and Opening pressure point, carried on the back by measurement
Pressure cavity pressure can judge the Opening pressure point of current safety valve online, and need not disassemble valve and carry out extra unlatching
Experimental tests.
When needing to change Opening pressure point setting value, only need to carry out inflation/deflation to back pressure cavity, convenient and reliable.Corrugated tube
The connection of actuator and valve gap, valve rod is Type of Welding, and the sealing property of back pressure cavity is very reliable, can reach 10-8Pa.m3/s
Magnitude is it is ensured that relief valve Pressure in Back-pressure Cavity during life-time service is stable, and then the opening point of guarantee valve is reliable and stable,
Do not occur to drift about or change.
Automatic inflatable device of air passes through to plug joint connection fast insert-pull check valve, and after connection, pressure transducer can sense
Pressure in Back-pressure Cavity, and show in real time on device, now can determine whether the Opening pressure of current safety valve.Need back pressure cavity is entered
During the operation of row inflation/deflation, only the specified location on device need to set target pressure value, this device can pass through pulse signal
Control miniature electromagnetic valve to open and carry out inflation/deflation, after reaching goal pressure, automatically cut off control signal, closed electromagnetic valve stops filling
Venting.Plug joint is extracted, the rapid return of fast insert-pull check valve, sealing is realized to back pressure cavity.
This relief valve of present invention design and automatic inflatable device of air achieve safety valve pressure point convenient adjust and
Quickly measure online, and can ensure that in life-time service, pressure spot does not stably drift about, efficiently solve conventional disc spring or spring peace
Full valve adjusts point inconvenience, pressure point drift and the problem that cannot quickly measure.
Gas of the present invention acts on the area of effective area on corrugated tube and air inlet than for 30：1～40：1, opening
It is only necessary to pour lower pressure in closed cavity when pressure requirements are higher, operate and safeguard is safe.
The content not being described in detail in description of the invention belongs to the known technology of professional and technical personnel in the field.
Claims (5)
1. a kind of relief valve with automatic inflatable device of air is it is characterised in that include corrugated tube (1), valve gap (5), changeover portion
(4), valve rod (2), housing (7), ball sealer (6) and check valve (10),
Valve gap (5) and housing (7) are the cavity-like body of one end blind hole, are connected by the changeover portion (4) of hollow between the two, valve rod
(2) it is placed in the cavity that valve gap (5), housing (7) and changeover portion (4) surround, valve rod (2) is I-shape construction, upper end and ripple
One end of pipe (1) connects, and the other end of corrugated tube (1) is connected with valve gap (5) bottom, corrugated tube (1), valve gap (5) and valve rod (2)
Upper end surrounds the cavity of a closing；
Valve rod (2) lower end and changeover portion (4) are dynamic sealing, and valve gap (5) is provided with check valve (10), check valve (10) and extraneous tool
Detection and the automatic inflatable device of air of charging-discharging function is had to connect, housing (7) lower end has air inlet, and side has gas outlet,
Being provided between air inlet and valve rod (2) can be to the ball sealer (6) of air inlet sealing, and changeover portion (4) side has passage.
2. as claimed in claim 1 a kind of relief valve with automatic inflatable device of air it is characterised in that check valve (10) with
After automatic inflatable device of air connects, automatic inflatable device of air detects and is converted to the Opening pressure of relief valve, and adjustable safety
The Opening pressure value of valve, when the gas pressure of air inlet reaches Opening pressure value, gas push ball sealer (6) carries ovable valve stem
(2) move upwards, ball sealer (6) releases and air inlet is sealed, and gas is discharged from gas outlet；When the gas pressure of air inlet does not reach
During to Opening pressure value, ball sealer (6) keeps sealing to air inlet.
3. as claimed in claim 1 a kind of relief valve with automatic inflatable device of air it is characterised in that also including cushion pad
(9), it is arranged on valve rod upper end.
4. as claimed in claim 1 a kind of relief valve with automatic inflatable device of air it is characterised in that gas acts on ripple
The area of the effective area on stricture of vagina pipe (1) and air inlet is than for 30：1～40：1.
5. as claimed in claim 1 a kind of relief valve with automatic inflatable device of air it is characterised in that corrugated tube (1), valve
The sealing property of closed cavity that lid (5) and valve rod (2) upper end surround can reach 10-8Pa.m3/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610946818.1A CN106402443A (en) | 2016-11-02 | 2016-11-02 | Safety valve provided with automatic inflation and deflation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610946818.1A CN106402443A (en) | 2016-11-02 | 2016-11-02 | Safety valve provided with automatic inflation and deflation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106402443A true CN106402443A (en) | 2017-02-15 |
Family
ID=58014039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610946818.1A Pending CN106402443A (en) | 2016-11-02 | 2016-11-02 | Safety valve provided with automatic inflation and deflation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106402443A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108189646A (en) * | 2017-09-05 | 2018-06-22 | 广东韩星健康家居科技有限公司 | A kind of air automatic purification equipment used for buses |
| CN109027399A (en) * | 2018-09-19 | 2018-12-18 | 北京航天动力研究所 | High pressure air governor gas valve open in usual |
| CN109060263A (en) * | 2018-08-13 | 2018-12-21 | 淮南胜奇新能源科技有限公司 | A kind of lithium battery vacuum detecting head and the vacuum checking device for being equipped with this detector |
| CN110552660A (en) * | 2018-06-04 | 2019-12-10 | 中国石油天然气股份有限公司 | Well opening and closing device |
| CN110645368A (en) * | 2019-10-14 | 2020-01-03 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Deep sea emergency escape valve |
| CN113028127A (en) * | 2021-05-31 | 2021-06-25 | 沈阳航天新光集团有限公司 | Gas cavity volume adjustable structure of non-mechanical gas pressure reducer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2313296A1 (en) * | 1973-03-14 | 1974-09-19 | Siemens Ag | BUTTERFLY FOR PIPE SYSTEMS, IN PARTICULAR FOR HIGH PRESSURE OIL CABLE SYSTEMS |
| US3960170A (en) * | 1974-03-20 | 1976-06-01 | Robert Bosch G.M.B.H. | Pressure regulating valve |
| JP2001241809A (en) * | 2000-03-02 | 2001-09-07 | Saginomiya Seisakusho Inc | High pressure control valve for super critical vapor compression freezing cycle device |
| CN105020445A (en) * | 2015-06-11 | 2015-11-04 | 北京精密机电控制设备研究所 | High-pressure gas safety valve |
-
2016
- 2016-11-02 CN CN201610946818.1A patent/CN106402443A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2313296A1 (en) * | 1973-03-14 | 1974-09-19 | Siemens Ag | BUTTERFLY FOR PIPE SYSTEMS, IN PARTICULAR FOR HIGH PRESSURE OIL CABLE SYSTEMS |
| US3960170A (en) * | 1974-03-20 | 1976-06-01 | Robert Bosch G.M.B.H. | Pressure regulating valve |
| JP2001241809A (en) * | 2000-03-02 | 2001-09-07 | Saginomiya Seisakusho Inc | High pressure control valve for super critical vapor compression freezing cycle device |
| CN105020445A (en) * | 2015-06-11 | 2015-11-04 | 北京精密机电控制设备研究所 | High-pressure gas safety valve |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108189646A (en) * | 2017-09-05 | 2018-06-22 | 广东韩星健康家居科技有限公司 | A kind of air automatic purification equipment used for buses |
| CN110552660A (en) * | 2018-06-04 | 2019-12-10 | 中国石油天然气股份有限公司 | Well opening and closing device |
| CN110552660B (en) * | 2018-06-04 | 2022-01-04 | 中国石油天然气股份有限公司 | Well opening and closing device |
| CN109060263A (en) * | 2018-08-13 | 2018-12-21 | 淮南胜奇新能源科技有限公司 | A kind of lithium battery vacuum detecting head and the vacuum checking device for being equipped with this detector |
| CN109027399A (en) * | 2018-09-19 | 2018-12-18 | 北京航天动力研究所 | High pressure air governor gas valve open in usual |
| CN109027399B (en) * | 2018-09-19 | 2024-03-15 | 北京航天动力研究所 | Normally open high-pressure gas control valve |
| CN110645368A (en) * | 2019-10-14 | 2020-01-03 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Deep sea emergency escape valve |
| CN113028127A (en) * | 2021-05-31 | 2021-06-25 | 沈阳航天新光集团有限公司 | Gas cavity volume adjustable structure of non-mechanical gas pressure reducer |
| CN113028127B (en) * | 2021-05-31 | 2021-09-03 | 沈阳航天新光集团有限公司 | Gas cavity volume adjustable structure of non-mechanical gas pressure reducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170215 |