CN106151656A - A kind of pneumatic controller of relief valve - Google Patents
A kind of pneumatic controller of relief valve Download PDFInfo
- Publication number
- CN106151656A CN106151656A CN201610679563.7A CN201610679563A CN106151656A CN 106151656 A CN106151656 A CN 106151656A CN 201610679563 A CN201610679563 A CN 201610679563A CN 106151656 A CN106151656 A CN 106151656A
- Authority
- CN
- China
- Prior art keywords
- piston
- cavity
- relief valve
- upper cover
- pneumatic controller
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 230000008676 import Effects 0.000 claims description 11
- 230000006837 decompression Effects 0.000 claims description 7
- 239000003208 petroleum Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/24—Other details, e.g. assembly with regulating devices for restricting the stroke
-
- 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
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention relates to the pneumatic controller of a kind of relief valve, it includes cavity, upper cover and lower capping, forms the piston of air cavity, adapter sleeve, the quick gas charging system of insufflation gas, reset system and control system in air cavity between drive rod and upper cover, wherein it is connected setting by sealing member and locking piece between upper cover with cavity inner wall, when after air cavity insufflation gas and when air pressure reaches setting value, piston stops descending, and relief valve is opened；When air cavity aerofluxus, valve plate along with piston reset and step by step by relief valve close, until this air cavity in air pressure drop as little as setting value time, piston stop motion, relief valve is of completely closed.The present invention is controlled by air pressure; can quickly realize opening or closing of relief valve, be particularly well-suited to the exploitation of downhole petroleum, it is possible to be effectively prevented the generation of blowout and other accidents; by relative with cavity for upper cover locking and sealed with sealing member by locking piece, it is ensured that the quick operation of piston simultaneously.
Description
Technical field
The present invention relates to a kind of pneumatic controller, be specifically related to the pneumatic controller of a kind of relief valve.
Background technology
It is known that relief valve is opening and closing element is in normally off by under External Force Acting, the medium in equipment or pipeline
When pressure increases to over setting, in preventing pipeline or equipment by the outside discharge medium of system, pressure medium exceedes stated number
The Special valve of value.
Especially in the recovery process of downhole petroleum, the use of its relief valve, it is possible to be effectively prevented the phenomenon of blowout
Occur, therefore, relief valve quickly open and close the most very important, and directly affect the normal operation of down-hole.
Summary of the invention
The technical problem to be solved is to overcome the deficiencies in the prior art, it is provided that the pneumatic control of a kind of relief valve
Device.
For solving above technical problem, the present invention adopts the following technical scheme that:
The pneumatic controller of a kind of relief valve, it includes that inside has cavity and the cavity being vertically arranged, respectively entering cavity
Mouthful and upper cover and lower capping, the bottom of outlet Guan Bi setting passes from lower capping and with driving that the valve plate of relief valve is connected
Lever, be horizontally set with in cavity and with the piston forming air cavity between upper cover, for piston is connected with the upper end of drive rod
The adapter sleeve that connects, in air cavity quick insufflation gas so that piston pushing tow drive rod move downward and moved downward by valve plate and
The gas charging system that opens the safety-valve, for the gas in air cavity quickly being discharged and answering of piston upwards reseting movement can be driven
Position system and according to air cavity within air pressure control gas be filled with the control system with output, wherein upper cover and cavity
It is connected with locking piece setting by sealing member between inwall, when after air cavity insufflation gas and when air pressure reaches setting value, piston
Stopping descending, relief valve is opened；When air cavity aerofluxus, valve plate along with piston reset and step by step by relief valve close, until
During the as little as setting value of the air pressure drop in this air cavity, piston stop motion, relief valve is of completely closed.
Preferably, cavity is cylinder, and the bottom of upper cover is filled in cavity from import and is close to the inwall of cavity；Upper envelope
Forming gap between top and the cavity inner wall of lid, locking piece includes being arranged on the annular slot of cavity import department, being fastened on
Seal upper part of the cover periphery and the jump ring in gap can be filled in, be inserted into from gap outwards strutting so that jump ring and stretching into annular snap
Locking plate in groove, for locking plate being fixed with upper cover the locking bolt being connected and being used for locking plate and cavity import inwall
Between seal the chock plug of setting mutually, wherein chock plug is conflicted and is being emerged on annular slot part and the jump ring that is clamped on locking plate.
Preferably, gas charging system includes inflatable interface, air supply source and the steam line being positioned on upper cover.
Preferably, reset system includes the fast decompression valve being arranged on upper cover, is positioned at the piston chien shih with lower capping
Piston exists away from the return springs of lower capping direction movement tendency, wherein fast decompression valve can quickly by piston and
Between upper cover, the gas in cavity is discharged.
Further, return springs is spring, and spring housing is located at the periphery of adapter sleeve.
Concrete, in piston base and lower capping, it is formed with the first back-up ring and the second back-up ring, the upper and lower side of spring respectively
Portion is separately positioned in the first back-up ring and the second back-up ring.It is easy to the location of spring, it is ensured that piston even running.
One according to the present invention is embodied as and preferred aspect, and cavity inner wall is upper coarse and lower fine stepped, works as piston
When moving at this ladder, this ladder limit the descending of piston.
Preferably, at ladder, be provided with spacing draw-in groove, when ladder limit piston descending time, piston is positioned at spacing draw-in groove
In；When valve plate resets, piston can depart from spacing draw-in groove and move upward.By the design of spacing draw-in groove, it is main
Purpose is, during descent of piston, is limited at ladder by piston, consequently facilitating the location of valve plate, but, once external force
Disappearing, piston automatically departs from spacing draw-in groove and moves upward, until relief valve is closed by valve plate.
Another according to the present invention is embodied as and preferred aspect, and pneumatic controller also includes for limiting piston upwards
The up position-limit mechanism of movement travel.
Preferably, up position-limit mechanism includes that bottom and described piston fixing are connected, upper end passes described upper cover
Push rod, be threadedly attached on upper cover and for limiting the stop collar of push rod up stroke, wherein push rod is along piston
The direction of motion extended, and the spacing preiection portion that push rod is provided with, when piston upwards resets, push rod progressively passes spacing
Set, during until conflicting with stop collar in spacing preiection portion, piston stops up, and spring is still within compressive state, and relief valve closes.
Concrete, up position-limit mechanism also include for by push rod with dodge, on upper cover, the sealing that hole carries out sealing
Circle, dust-blocking ring and circlip for hole.
Additionally, the upper surface of upper cover flushes setting with the upper surface of cavity；It is additionally provided with suspension ring spiral shell at the top of upper cover
Nail；Being provided with downward opening cannelure in the bottom of upper cover, gas charging system is connected with cannelure.
Due to the enforcement of above technical scheme, the present invention compared with prior art has the advantage that
The present invention is controlled by air pressure, it is possible to quickly realizes opening or closing of relief valve, is particularly well-suited to opening of downhole petroleum
Adopt, it is possible to be effectively prevented the generation of blowout and other accidents, very useful, simultaneously by locking piece and sealing member by upper cover with
The locking relatively of cavity and sealing, further ensure that the quick operation of piston, simple in construction, and it is convenient to implement, and low cost.
Accompanying drawing explanation
The present invention will be further described in detail with specific embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the schematic front view (section view) according to pneumatic controller of the present invention；
Wherein: 1, cavity；2, upper cover；20, cannelure；3, lower capping；4, drive rod；5, piston；6, adapter sleeve；7, inflation system
System；70, inflation inlet；8, reset system；80, fast decompression valve；81, return springs (spring)；9, sealing ring；10, wear ring；
11, up position-limit mechanism；110, push rod；111, stop collar；112, sealing ring；113, dust-blocking ring；114, circlip for hole；
12, lifting bolt；T, ladder；C, spacing draw-in groove；A, the first back-up ring；B, the second back-up ring；D, spacing preiection portion；E, sealing member；f、
Locking piece；F1, annular slot；F2, jump ring；F3, locking plate；F4, locking bolt；F5, chock plug.
Detailed description of the invention
As it is shown in figure 1, the pneumatic controller of the relief valve of the present embodiment, it includes that inside has cavity and is vertically arranged
Cavity 1, the upper cover 2 that the inlet and outlet of cavity 1 closes setting respectively and lower capping 3, bottom pass also from lower capping 3
The drive rod 4 that is connected with the valve plate of relief valve, be horizontally set with in cavity and and upper cover 2 between formed air cavity piston 5, for
Adapter sleeve 6 that the upper end of piston 5 with drive rod 4 is connected, in air cavity quick insufflation gas so that piston 5 pushing tow drives
Gas charging system 7 that lever 4 moves downward and moved downward by valve plate and opens the safety-valve, for the gas in air cavity is quickly arranged
Go out and can drive piston 5 upwards reseting movement reset system 8 and according within air cavity air pressure control gas be filled with and
The control system of output, is wherein connected setting by sealing member e and locking piece f between upper cover 2 with cavity 1 inwall, when
After air cavity insufflation gas and when air pressure reaches setting value, piston 5 stops descending, and relief valve is opened；When air cavity aerofluxus, valve plate with
Piston 5 reset and step by step by relief valve close, until this air cavity in air pressure drop as little as setting value time (quick pressure releasing),
Piston 5 stop motion, relief valve is of completely closed.
In this example, cavity 1 is cylindrical.
Meanwhile, it is upper coarse and lower fine stepped, when piston 5 moves at this ladder t, by this ladder t at cavity 1 inwall
Limit the descending of piston 5.
Further, at ladder t, be provided with spacing draw-in groove c, when ladder t limit piston 5 descending time, piston 5 is positioned at limit
In the draw-in groove c of position；When valve plate resets, piston 5 can depart from spacing draw-in groove c and move upward.
Concrete, by the design of spacing draw-in groove c, its main purpose is, during piston 5 is descending, is limited by piston 5
It is scheduled at ladder t, consequently facilitating the location of valve plate, but, once external force disappears, and piston 5 departs from also automatically in spacing draw-in groove c
Move upward, until relief valve is closed by valve plate.
In this example, gas charging system 7 includes inflatable interface 70, air supply source and the steam line being positioned on upper cover 2.
In this example, reset system 8 includes the fast decompression valve 80 being arranged on upper cover 2, is positioned at piston 5 and lower capping 3
Between make piston 5 there is the return springs 81 away from lower capping direction movement tendency, wherein fast decompression valve 81 can be fast
Speed the gas in cavity between piston 5 and upper cover 2 is discharged.
Further, return springs 81 is spring, and spring 81 is set in the periphery of adapter sleeve 6.
Concrete, and it is formed with the first back-up ring a and the second back-up ring b in lower capping 3 bottom piston 5 respectively, spring 81
Upper and lower end parts is separately positioned in the first back-up ring a and the second back-up ring b.It is easy to the location of spring 81, it is ensured that piston 5 even running.
Further, in order to be effectively prevented pressure release, it is provided with in the periphery of piston 5 and can arrange with cavity 1 inner sealing
Sealing ring 9 and wear ring 10.
Pneumatic controller also includes moving upward the up position-limit mechanism 11 of stroke for limiting piston 5.
Up position-limit mechanism 11 includes that bottom and piston 5 fixing is connected, upper end passes the push rod 110 of upper cover 2；Logical
Cross and be threaded on upper cover 2 and for the stop collar 111 limiting push rod 110 up stroke；For by push rod 110 and upper envelope
Lid 2 on dodge sealing ring 112, dust-blocking ring 113 and the circlip for hole 114 that hole carries out sealing.
Concrete, push rod 110 is extended along the direction of motion of piston 5, and sets stop bosses d on push rod 110,
When piston 5 upwards resets, push rod 110 progressively passes stop collar 111, during until spacing preiection portion d and stop collar 111 are conflicted,
Piston 5 stops up, and spring 81 is still within compressive state, and relief valve closes.
Fill in additionally, above-mentioned upper cover 2 is the import from cavity 1, and seal e with the import of cavity 1 by sealing member
Connect.The upper surface of upper cover 2 flushes setting with cavity 1 top simultaneously.
Concrete, the bottom of upper cover 2 is filled in cavity 1 from import and is close to the inwall of cavity；The top of upper cover 2 with
Forming gap between cavity 1 inwall, locking piece f includes being arranged on the annular slot f1 of cavity 1 import department, being fastened on upper cover 2
The periphery on top and the jump ring f2 in gap can be filled in, be inserted into from gap so that jump ring f2 outwards struts and stretches into annular snap
Locking plate f3 in groove f1, for locking plate f3 is fixed the locking bolt f4 being connected with upper cover 2 and is used for locking plate f3 and chamber
Sealing the chock plug f5 of setting between body 1 import inwall mutually, wherein chock plug f5 conflicts and partly and is clamped at annular slot f1 of emerging
On jump ring f2 on locking plate f3.
Further, bottom upper cover 2, downward opening cannelure 20, wherein inflatable interface 70 and quick pressure releasing it are provided with
Valve 80 is all connected with this cannelure 20, after preventing up position-limit mechanism 11 malfunctioning, yet suffers from holding between piston and upper cover 2
Receive space, thus facilitate quickly being filled with of gas, the fast downlink motion of piston.
Meanwhile, in this example, the also top at upper cover 2 is additionally provided with lifting bolt 12, consequently facilitating pneumatic controller is hanging
Car controls lower mobile to the position needed.
Above the present invention is described in detail, but the invention is not restricted to the embodiments described.All according to the present invention's
The equivalence that spirit is made changes or modifies, and all should contain within the scope of the present invention.
Claims (10)
1. the pneumatic controller of a relief valve, it is characterised in that: described pneumatic controller includes that inside has cavity and erects
Straight cavity, the upper cover that the inlet and outlet of described cavity closes setting respectively and lower capping, the bottom arranged is from described
Lower capping pass and be connected with the valve plate of relief valve drive rod, be horizontally set with in described cavity and and described upper cover between shape
Become air cavity piston, for the adapter sleeve that described piston is connected with the upper end of described drive rod, in described air cavity soon
Speed insufflation gas is so that drive rod described in described piston pushing tow moves downward and moved downward by described valve plate and opens described
The gas charging system of relief valve, for the gas in described air cavity quickly being discharged and described piston upwards reseting movement can be driven
Reset system and according within described air cavity air pressure control gas be filled with the control system with output, wherein said
Upper cover and described cavity inner wall between be connected setting by sealing member and locking piece, when after described air cavity insufflation gas and
When air pressure reaches setting value, described piston stops descending, and described relief valve is opened；When described air cavity aerofluxus, described
Described relief valve along with the reset of described piston and is closed by valve plate step by step, until the air pressure drop as little as setting value in this air cavity
Time, described piston stop motion, described relief valve is of completely closed.
The pneumatic controller of relief valve the most according to claim 1, it is characterised in that: described cavity is cylinder, institute
The bottom stating upper cover is filled in described cavity from described import and is close to the inwall of described cavity；The top of described upper cover with
Forming gap between described cavity inner wall, described locking piece includes being arranged on the annular slot of described cavity import department, card sets
In the periphery on described upper cover top and the jump ring in described gap can be filled in, be inserted into so that described jump ring from described gap
Outwards strut and stretch into the locking plate in described annular slot, for described locking plate to be fixed the locking spiral shell being connected with described upper cover
Bolt and for sealing the chock plug of setting between described locking plate with described cavity import inwall mutually, wherein said chock plug is conflicted
Emerging on described annular slot part and the described jump ring that is clamped on described locking plate.
The pneumatic controller of relief valve the most according to claim 1, it is characterised in that: described gas charging system includes being positioned at
Inflatable interface, air supply source and steam line on described upper cover.
The pneumatic controller of relief valve the most according to claim 1, it is characterised in that: described reset system includes arranging
Fast decompression valve on described upper cover, described piston is made to exist away from institute between described piston and described lower capping
Stating the return springs of lower capping direction movement tendency, wherein said fast decompression valve can be quickly by described piston and institute
The gas stated between upper cover in cavity is discharged, and described return springs is spring, and described spring housing is located at described connection
The periphery of set.
The pneumatic controller of relief valve the most according to claim 4, it is characterised in that: respectively in described piston base and institute
State and in lower capping, be formed with the first back-up ring and the second back-up ring, the upper and lower end parts of described spring be separately positioned on described first back-up ring and
In second back-up ring.
The pneumatic controller of relief valve the most according to claim 1, it is characterised in that: under described cavity inner wall is presented slightly
Thin is stepped, time at described piston movement to this ladder, this ladder limits the descending of described piston.
The pneumatic controller of relief valve the most according to claim 6, it is characterised in that: it is provided with spacing at described ladder
Draw-in groove, when described ladder limits described piston descending, described piston is positioned at described spacing draw-in groove, when described valve plate is multiple
During position, described piston can depart from described spacing draw-in groove and move upward.
The pneumatic controller of relief valve the most according to claim 1, it is characterised in that: described pneumatic controller also includes
For limiting the up position-limit mechanism of described piston upwards stroke.
The pneumatic controller of relief valve the most according to claim 8, it is characterised in that: described up position-limit mechanism includes
Bottom fix with described piston be connected, upper end passes the push rod of described upper cover, be threadedly attached in described upper cover
Going up and for limiting the stop collar of described push rod up stroke, wherein said push rod extends along the direction of motion of described piston
Arranging, and set stop bosses on described push rod, when described piston upwards resets, described push rod progressively passes described
Stop collar, during until described spacing preiection portion and described stop collar are conflicted, described piston stops up, and described spring is still
So it is in compressive state, described relief valve Guan Bi.
The pneumatic controller of relief valve the most according to claim 1, it is characterised in that: the upper surface of described upper cover with
The upper surface of described cavity flushes setting；It is additionally provided with lifting bolt at the top of described upper cover；Bottom at described upper cover
Being provided with downward opening cannelure, described gas charging system is connected with described cannelure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610679563.7A CN106151656A (en) | 2016-08-17 | 2016-08-17 | A kind of pneumatic controller of relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610679563.7A CN106151656A (en) | 2016-08-17 | 2016-08-17 | A kind of pneumatic controller of relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106151656A true CN106151656A (en) | 2016-11-23 |
Family
ID=57330911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610679563.7A Pending CN106151656A (en) | 2016-08-17 | 2016-08-17 | A kind of pneumatic controller of relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106151656A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108189909A (en) * | 2016-12-08 | 2018-06-22 | 辽宁丹东新弘源农业科技发展有限公司企业技术研究开发中心 | A kind of gas-operated lock solution device |
| CN108661975A (en) * | 2018-06-29 | 2018-10-16 | 苏州力森克液压设备有限公司 | A kind of static state spacing-type engineering hydraulic cylinder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3107692A (en) * | 1960-10-04 | 1963-10-22 | Asea Ab | Air blast valve particularly for electric circuit breakers |
| CN2646498Y (en) * | 2003-08-22 | 2004-10-06 | 什邡慧丰采油机械有限责任公司 | Petroleum/natural gas well mouth surface safety valve |
| CN201696641U (en) * | 2010-05-27 | 2011-01-05 | 上海尊优自动化设备有限公司 | Pneumatic actuation safety valve |
| CN201787101U (en) * | 2010-08-12 | 2011-04-06 | 承德江钻石油机械有限责任公司 | Pneumatic parallel gate valve |
| CN202432082U (en) * | 2011-12-16 | 2012-09-12 | 四川天工阀门有限公司 | Pneumatic piston type safety valve actuator |
| CN203549078U (en) * | 2013-10-10 | 2014-04-16 | 美国钻采***(南京)有限公司 | Overall disassembling and mounting actuator |
| CN205938111U (en) * | 2016-08-17 | 2017-02-08 | 亚新铸造（苏州）有限公司 | Pneumatic controller of relief valve |
-
2016
- 2016-08-17 CN CN201610679563.7A patent/CN106151656A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3107692A (en) * | 1960-10-04 | 1963-10-22 | Asea Ab | Air blast valve particularly for electric circuit breakers |
| CN2646498Y (en) * | 2003-08-22 | 2004-10-06 | 什邡慧丰采油机械有限责任公司 | Petroleum/natural gas well mouth surface safety valve |
| CN201696641U (en) * | 2010-05-27 | 2011-01-05 | 上海尊优自动化设备有限公司 | Pneumatic actuation safety valve |
| CN201787101U (en) * | 2010-08-12 | 2011-04-06 | 承德江钻石油机械有限责任公司 | Pneumatic parallel gate valve |
| CN202432082U (en) * | 2011-12-16 | 2012-09-12 | 四川天工阀门有限公司 | Pneumatic piston type safety valve actuator |
| CN203549078U (en) * | 2013-10-10 | 2014-04-16 | 美国钻采***(南京)有限公司 | Overall disassembling and mounting actuator |
| CN205938111U (en) * | 2016-08-17 | 2017-02-08 | 亚新铸造（苏州）有限公司 | Pneumatic controller of relief valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108189909A (en) * | 2016-12-08 | 2018-06-22 | 辽宁丹东新弘源农业科技发展有限公司企业技术研究开发中心 | A kind of gas-operated lock solution device |
| CN108189909B (en) * | 2016-12-08 | 2023-12-22 | 辽宁丹东新弘源农业科技发展有限公司企业技术研究开发中心 | Pneumatic unlocking device |
| CN108661975A (en) * | 2018-06-29 | 2018-10-16 | 苏州力森克液压设备有限公司 | A kind of static state spacing-type engineering hydraulic cylinder |
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