CN2258942Y - Automatic safety emptying valve - Google Patents
Automatic safety emptying valve Download PDFInfo
- Publication number
- CN2258942Y CN2258942Y CN 96232917 CN96232917U CN2258942Y CN 2258942 Y CN2258942 Y CN 2258942Y CN 96232917 CN96232917 CN 96232917 CN 96232917 U CN96232917 U CN 96232917U CN 2258942 Y CN2258942 Y CN 2258942Y
- Authority
- CN
- China
- Prior art keywords
- valve
- main
- safe
- pneumatic actuator
- spring
- 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.)
- Expired - Fee Related
Links
- 230000033228 biological regulation Effects 0.000 claims description 9
- 230000008676 import Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000012528 membrane Substances 0.000 abstract 1
- 230000002153 concerted effect Effects 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Control Of Fluid Pressure (AREA)
Abstract
The utility model provides an automatic safety vent valve, which is an integrated structure formed by connecting a safety command valve, a pneumatic actuator and a main valve into a whole, wherein the safety command valve comprises two membrane chambers, an upper cylinder, an adjusting spring and an adjusting screw rod; the pneumatic actuator consists of a throttling element, a conduit, a master cylinder, a master spring and a master adjusting screw. The advantage does not need any external pressure source when installing, only depends on the pressure of transmission medium self by the safe command valve control emptying volume and safe set value, convenient operation safe and reliable, can be used to the emptying of medium transmission pipeline, reposition of redundant personnel and pressure control.
Description
The utility model belongs to the valve class, a kind of automatic safe atmospheric valve.
The atmospheric valve that uses in existing petrochemical plant or the pipeline substantially all is gate valve, stop valve or the needle value of manually control, the claimant has obtained, and Patent right " a kind of atmospheric valve " also is manual control, on major oil and gas field, the oil recovery well station disperses very much, emptying manipulation is very inconvenient, and the bad grasp of emptying amount is often because of the rapid sudden change of well head or pipeline pressure, manually control is difficult to carry out, and Security is relatively poor.
The purpose of this utility model is to overcome existing atmospheric valve control operation inconvenience, the relatively poor defective of Security.
The purpose of this utility model realizes by a kind of design proposal of automatic safe atmospheric valve.It is mainly by valve body, valve rod, spool and valve seat constitute, comprise safe command valve, pneumatic actuator and main valve three are partly, adopt cage type valve core retainer plate 3 in the main valve, plunger shape spool 6 and double seal assistant valve seat 4, it is characterized in that 1, safe command valve, pneumatic actuator and the main valve structurally three-in-one are linked to be an integral body, main valve loam cake 8 is communicated with the main valve import with safe command valve, throttling element 18 is communicated with pneumatic actuator exhaust port 25 with the main valve outlet, 2, safe command valve is by the first film chamber 11, the second film chamber 12, upper cylinder 13, Regulation spring 21, nozzle 22, adjusting screw rod 23 constitutes, two film chambers and upper cylinder are through tee union 10, conduit 9 is communicated with each other, there is nozzle 22 in the second film chamber inlet, and the outlet port has throttle orifice 24, Regulation spring 21, adjusting screw rod 23 is located at upper cylinder top.3, pneumatic actuator is made of throttling element 18, conduit 9, master cylinder 14, main spring 15, homophony pole 16, and throttling element, conduit are communicated with chamber under the master cylinder, and main spring, homophony pole are located at chamber on the master cylinder.
Fig. 1 is the utility model structural representation and implements illustration;
Fig. 2 is safe command valve schematic representation.
The drawing reference numeral explanation: 1, lower cover; 2, O-ring seals; 3, filter screen; 4, valve seat; 5, O shape circle; 6, spool; 7, the cage type cover; 8, bonnet; 9, conduit; 10, three connect altogether; Film chambers 11, the first; Film chambers 12, the second; 13, upper cylinder; 14, master cylinder; 15, main spring; 16 homophony poles; 17, valve rod; 18, throttling element; 19, pressure gauge; 20, main valve body; 21, Regulation spring; 22, nozzle; 23, adjusting screw rod; 24, throttle orifice.
In the present embodiment, main valve plunger shape seal spool end face built-up welding erosion resistance corrosion-resisting hard-alloy, valve seat end face pile-up welding hard alloy also is provided with the soft seal ramp structure.Below in conjunction with accompanying drawing to the utility model structure with further describe as principle mutually.After the pipeline of main valve and transmission medium (oil, gas) is connected, pressure medium is promptly guided to valve benefit 8 by end flange, introduce safe command valve through conduit 9, tee union 10, form different equilibrium systems by regulating spring 21 adjustings, transmit pressure signal through throttle orifice 24 in setting the pressure reduction ratio, because the first film chamber end area is greater than the upper cylinder piston area, when pressure medium does not reach the working pressure of setting, the second film chamber nozzle 22 is in sealing state, the indoor no pressure of film, thereby master cylinder 14 no pressure sources, atmospheric valve is in closed condition.When pressure medium raises gradually and reaches setting pressure, the power that the first film chamber area produces is made a concerted effort greater than upper cylinder piston area power and Regulation spring 21, the nozzle 22 of the second film chamber is opened, be communicated with chamber under the master cylinder by throttle orifice 24, so under the medium thrust that makes progress, overcoming main spring 15 pressure, main piston make main valve open emptying.Along with emptying, reduce gradually from the pressure medium of pipeline, the pressure in safe command valve film chamber and the cylinder also decreases.Because the throttle orifice in outlet port, the second film chamber, after nozzle was opened, two film chambers produce acted on upper cylinder with joint efforts simultaneously, so emptying is still being proceeded, make a concerted effort and upper cylinder the making a concerted effort during balance of Regulation spring until the film chamber, nozzle is the group of closing, thereby pressure source cuts off, and emptying finishes; Because the active force of main spring design is less, so can guarantee to make the main valve standard-sized sheet in minimum emptying pressure range.Pressure gauge 19 is in order to direct reflection atmospheric valve inlet pressure and master cylinder outlet pressure, and emergent control main valve opened and closed when homophony pole 16 was used for safe command valve and breaks down.
The utility model has the advantages that does not need any servicing unit when installing, open and close Any exterior power supply of Shi Buxu, source of the gas are used as power, only by institute's transmission medium self Pressure, in any range that nominal pressure is set, controlled by the safety-command valve Emptying weight range and secure setting, control operation is convenient, and the emptying amount is easy to grasp , emptying opens and closes safe and reliable. Can be widely used in the mutual department of oilization medium passes The emptying of defeated pipeline, shunting and pressure are regulated.
Claims (1)
1. an automatic safe atmospheric valve is made up of valve body, valve rod, spool and valve seat, comprises safe command valve, pneumatic actuator and main valve three partly, it is characterized in that:
1). safe command valve, pneumatic actuator and the main valve structurally three-in-one are linked to be an integral body, and main valve loam cake (8) is communicated with the main valve import with safe command valve, and throttling element (18) is communicated with pneumatic actuator exhaust port (25) with the main valve outlet;
2). safe command valve is by the first film chamber (11), the second film chamber (12), upper cylinder (13), Regulation spring (21), adjusting screw rod (23), nozzle (22) is formed, the first film chamber, the second film chamber and upper cylinder interconnect through tee union (10) and conduit (9), the second film chamber inlet is provided with nozzle (22), and Regulation spring, adjusting screw rod are located at upper cylinder top;
3). pneumatic actuator is made up of throttling element (18), conduit (9), master cylinder (14), main spring (15) and main regulation screw rod (16), and throttling element, conduit are communicated with chamber under the master cylinder, and main spring, main regulation screw rod are located at master cylinder top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96232917 CN2258942Y (en) | 1996-04-04 | 1996-04-04 | Automatic safety emptying valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96232917 CN2258942Y (en) | 1996-04-04 | 1996-04-04 | Automatic safety emptying valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2258942Y true CN2258942Y (en) | 1997-08-06 |
Family
ID=33909734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96232917 Expired - Fee Related CN2258942Y (en) | 1996-04-04 | 1996-04-04 | Automatic safety emptying valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2258942Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389933A (en) * | 2021-07-29 | 2021-09-14 | 四川长仪油气集输设备股份有限公司 | Multifunctional pilot operated safety valve |
-
1996
- 1996-04-04 CN CN 96232917 patent/CN2258942Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389933A (en) * | 2021-07-29 | 2021-09-14 | 四川长仪油气集输设备股份有限公司 | Multifunctional pilot operated safety valve |
| CN113389933B (en) * | 2021-07-29 | 2022-08-09 | 四川长仪油气集输设备股份有限公司 | Multifunctional pilot operated safety valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |