CN205745581U - A kind of pneumatic diaphragm executor and relief valve - Google Patents
A kind of pneumatic diaphragm executor and relief valve Download PDFInfo
- Publication number
- CN205745581U CN205745581U CN201620670042.0U CN201620670042U CN205745581U CN 205745581 U CN205745581 U CN 205745581U CN 201620670042 U CN201620670042 U CN 201620670042U CN 205745581 U CN205745581 U CN 205745581U
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- valve
- back seal
- executor
- pneumatic diaphragm
- diaphragm
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Abstract
The utility model discloses pneumatic diaphragm executor and use the relief valve of this lifting diaphragm actuator, this pneumatic diaphragm executor includes cylinder body, barrier film, diaphragm support seat, undersetting, spring, spring base and the connecting rod being connected with valve rod, be additionally provided with filler and gland on valve gap, on the outer circumference surface of the bottom of connecting rod threaded have can the adjusting nut of up-down adjustment fixed position, the lower end of adjusting nut has the support surface offseted with gland；The back seal step supporting described filler it is provided with in valve gap, valve rod activity from back seal step passes, it is provided with back seal structure between valve rod and back seal step, valve gap offers the back seal detection hole of inside and outside through described back seal step, flat gate valve is also additionally provided with valve greasing hole.Can quickly carry out latus rectum test regulation by adjusting nut, back seal can be quickly carried out by back seal detection hole and detect, very convenient.
Description
Technical field
The present invention relates to a kind of for valve opening and the driving means of closedown and the valve using this driving means, especially
It is that a kind of flat gate valve diaphragm type pneumatic performs device and relief valve.
Background technology
Flat gate valve is at the exploitation wellhead assembly of oil and natural gas, the feed-line of oil and natural gas, product oil
Suffer from extensively applying on the hardware device in the petroleum industry such as feed-line and bunkerage each stage.For meet difference in functionality and
Adapting to different operating mode, support, nourishment condition, flat gate valve has multiple type of drive, such as: manually, single-acting surge, double acting liquid
Dynamic, diaphragm pneumatic and piston are pneumatic etc..
The relief valve that pneumatic diaphragm executor forms after docking with flat gate valve is particularly suitable for well mouth release valve application, conveying
Pipeline, header valve and gathering line, also be used as casing safety valve and storage valve in addition.The advantage of pneumatic diaphragm executor is weight
Amount is light, easy care, can be difficult to garrison for a long time under the adverse circumstances providing support the most without reason land, offshore platform or personnel
Barrier uses.
Along with the application of diaphragm actuator is progressively deepened, diaphragm actuator in the market is in design with fit on still
Be significantly improved space, such as: does fine setting, barrier film cylinder and the seal form of diaphragm, back seal test during latus rectum test
Structure.Chinese invention patent CN201310102937.5 discloses a kind of flat gate valve pneumatic diaphragm driving means, exists for
Such defect: when doing latus rectum fine setting, can only realize regulation by the pad increased and reduce on gland；Back seal
Detection hole shares with greasing hole, when left valve rod and valve gap back seal are tested, it is necessary to first taken out by filler, cumbersome.
As can be seen here, use the pneumatic diaphragm executor of prior art to form relief valve with flat gate valve, there is following lacking
Fall into:
1) doing latus rectum test when being finely adjusted, current solution is to arrange pad (Drift at executor's lower limit
Shim), regulation is realized by increase and minimizing pad；Disadvantage of this is that pad is increased or decreased every time will be to connection
Bar, valve rod mechanism are dismantled, and waste time and energy；
2) enhancing of the sealing property of barrier film cylinder and barrier film, is to transform, such as in the structure of barrier film the most mostly
Solve sealing problem by arranging the structures such as boss on the sealing surface of barrier film, disadvantage of this is that and realize same sealing
During effect, the load of bolt can be bigger, and the pretightning force sealed realizes by diaphragm rubber self completely, when ambient temperature reduces
Time, the elasticity of rubber and ductility can be remarkably decreased, and reduce or entirely without pretightning force, it is unreliable to seal；
3) filler must first be taken out by relief valve when doing valve rod and the test of valve gap back seal, so increase much assemble and
Experimentation cost.
Summary of the invention
In view of this, in order to solve the defect of prior art, the present invention provides one to be more convenient for during latus rectum test and adjusts
Joint, diaphragm seal is more reliable, and back seal detection is more convenient and pneumatic diaphragm executor that cost is lower, and use this pneumatic every
The relief valve of film executor.
In order to achieve the above object, the present invention provides a kind of pneumatic diaphragm executor, including cylinder body, is arranged on described cylinder body
Interior barrier film and diaphragm support seat, the bottom of described cylinder body is provided with the valve gap with flat gate valve and fixes the undersetting being connected, described
Undersetting is provided with spring, and the upper end of described spring is provided with spring base, and described spring base is provided with and the valve of described flat gate valve
The connecting rod that bar connects, described valve gap is additionally provided with filler and gland, it is characterised in that: the bottom of described connecting rod
On outer circumference surface threaded have can the adjusting nut of up-down adjustment fixed position, the lower end of described adjusting nut has with described
The support surface that gland offsets；Be provided with the back seal step supporting described filler in described valve gap, described valve rod from described fall
In sealed step, activity passes, and is provided with back seal structure, described valve gap is offered between described valve rod and described back seal step
There is the back seal detection hole of inside and outside through described back seal step, described flat gate valve is also additionally provided with valve greasing hole.
It is preferred that described back seal structure includes that the back seal being arranged on the outer circumference surface of described valve rod is protruding and arranges
Back seal inclined-plane on the lower ending opening edge of described back seal step.It is preferred that described valve greasing hole is opened in described
On valve gap and be positioned at the lower section of described back seal step, or it is opened on the valve body of described flat gate valve.
Described back seal detection hole includes that through hole section and the screwed hole section of inside and outside connection, the detection of described back seal are provided with in hole
Seal the sealing member of described through hole section and be fixed the screw of described sealing member.
In one embodiment, described sealing member is steel ball, and the corresponding described steel ball of the afterbody of described screw is offered limited
Position groove.
It is preferred that be additionally provided with on described adjusting nut, described adjusting nut is locked, with described connecting rod, the connection being connected
Part.
More preferably, the upper end of described valve gap is provided with the step of annular, and the inner side of described step has and described connecting rod
The inner side step face that lower surface is corresponding, the outside of described step has the outside step corresponding with the support surface of described adjusting nut
Face.In a particular embodiment, the height in described inner side step face is higher than the height of described outside step surface.
Wherein, described cylinder body includes that barrier film cylinder and lower diaphragm plate cylinder, described upper barrier film cylinder have a upper sealing strip, described under every
Film cylinder has lower seal limit, and the edge of described barrier film is clipped between described upper sealing strip and described lower seal limit and is passed through by bolt
Wearing the described upper sealing strip of connection, described barrier film and described lower seal limit, described upper sealing strip has the most acclivitous
Upper sealing surface, described lower seal limit has lower sealing surface downward-sloping outside interior.
It is preferred that the described acclivitous angle of upper sealing surface is 1 degree to 2 degree；The angle that described lower sealing surface is downward-sloping
Degree is 1 degree to 2 degree.
In order to increase effective contact area of sealing surface, lift-off seal performance, the inner side of described upper sealing surface with described every
The position of film phonograph seal contact is provided with screw thread waterline, and the inner side of described lower sealing surface is provided with lower spiral shell with the position of described membrane contacts
Stricture of vagina waterline.
The present invention additionally provides a kind of relief valve, and including flat gate valve, described flat gate valve includes valve body, valve rod, valve
Lid and flashboard, it is characterised in that: described relief valve also includes above-described pneumatic diaphragm executor, and described undersetting is fixed on
On described valve gap, the lower end of described valve rod is connected with described flashboard, its upper end through after described valve gap and described gland with
Described connecting rod is threaded.
The pneumatic diaphragm executor of the present invention, for there being the flat gate valve broken down from the safety requirements that becomes, can be used for losing efficacy
Close and lost efficacy and open two kinds of relief valve, i.e. order about flashboard when being in an emergency and playback (home) voluntarily.Compared to
Prior art, the invention has the beneficial effects as follows:
(1) in connecting rod, adjusting nut is increased, it is possible to finely tune flashboard height and position quickly and easily when valve closing,
Valve is made to reach drift test eligible state；
(2), during back seal test, back seal detection hole is only used for back seal test, is not used to greasing in valve, surveys
Need not take out filler during examination, convenient.
(3) in further improving, the sealing strip to barrier film cylinder uses inclined design, makes the sealing strip of barrier film cylinder have one
Fixed deflection, bolt enhances the pretightning force between barrier film cylinder and barrier film after connecting, and is conducive to sealing and screw retention.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view (omission of pneumatic diaphragm executor of the present invention and the relief valve of flat gate valve composition
Valve body and flashboard).
Fig. 2 is the I portion enlarged diagram of Fig. 1.
Fig. 3 is the cylinder body sealed structural representation with barrier film of pneumatic diaphragm executor of the present invention.
Fig. 4 is pneumatic diaphragm executor of the present invention and the signal carried out before latus rectum regulation of the relief valve of flat gate valve composition
Figure.
Fig. 5 is pneumatic diaphragm executor of the present invention and the signal carried out after latus rectum regulation of the relief valve of flat gate valve composition
Figure.
In accompanying drawing: 1-diaphragm support seat, 2-spring base, 3-connecting rod, 4-recess lock-screw, 5-adjusting nut, 6-bullet
Spring, 7-gland, 8-filler, 9-valve gap, 10-valve rod, 11-upper barrier film cylinder, 12-bolt, 13-nut, 14-barrier film, under 15-
Barrier film cylinder, 16-recess lock-screw, 17-steel ball, 18-flashboard.
Detailed description of the invention
Below in conjunction with the accompanying drawings the preferred embodiment of the present invention is described in detail.
Refer to Fig. 1 to Fig. 5, a kind of pneumatic diaphragm executor of the present embodiment, including cylinder body, be arranged in cylinder body every
Film 14 and diaphragm support seat 1, the bottom of cylinder body is provided with the fixing undersetting being connected of valve gap 9 with flat gate valve, described undersetting
Being provided with spring 6, the upper end of spring 6 is provided with spring base 2, and spring base 2 is provided with the connection that the valve rod 10 with flat gate valve is connected
Bar 3, valve gap 9 is additionally provided with filler 8 and gland 7, and threaded on the outer circumference surface of the bottom of connecting rod 3 have can be upper and lower
The adjusting nut 5 of regulation fixed position, is provided with the back seal step supporting filler 8 in valve gap 9, valve rod is from described back seal step
Middle activity passes, and is provided with back seal structure between valve rod 10 and described back seal step, valve gap 9 offers inside and outside through described
The back seal detection hole of back seal step, described flat gate valve is also additionally provided with the valve note being specifically designed to greasing in valve
Fat hole.Back seal structure includes that the back seal being arranged on the outer circumference surface of valve rod 10 is protruding and is arranged on described back seal step
Lower ending opening edge on back seal inclined-plane.Wherein, valve greasing hole (not shown) is opened on valve gap 9 and is positioned at described
The lower section of back seal step, or be opened on the valve body of flat gate valve.
It is additionally provided with on adjusting nut 5 and adjusting nut 5 is locked, with connecting rod 3, the connector being connected, described in the present embodiment
Connector is recess lock-screw 4.The upper end of adjusting nut 5 has the upper end that the step on the top, periphery with connecting rod 3 offsets
Face, the lower end of adjusting nut 5 has the support surface offseted with gland 7.With adjusting nut 5 accordingly, the upper end of valve gap 9 sets
Having the step of annular, the inner side of described step has the inner side step face corresponding with the lower surface of connecting rod 3, outside described step
Side has an outside step surface corresponding with the support surface of adjusting nut 5, and the height in described inner side step face is higher than outside described
The height of side stage terrace.
The pneumatic diaphragm executor of the present embodiment, for there being the flat gate valve broken down from the safety requirements that becomes, can be used for losing
Effect is closed and was lost efficacy and opens two kinds of relief valve, i.e. orders about flashboard when being in an emergency and playbacks voluntarily.By above-mentioned pneumatic diaphragm
After executor is installed on flat gate valve, constituting a kind of relief valve, this flat gate valve includes valve body, valve rod 10, valve gap 9 and lock
Plate 18, the undersetting of pneumatic diaphragm executor is fixed on valve gap 9, and the lower end of valve rod 10 is connected with flashboard 18, and its upper end passes
Threaded with connecting rod 3 after valve gap 9 and gland 7.It is the most quick and convenient that this relief valve carries out latus rectum test regulation, and
Quickly can detect valve back seal in the case of not taking filler and gland apart, in valve, greasing is the most very convenient.
As in figure 2 it is shown, back seal detection hole includes through hole section and the screwed hole section of inside and outside connection, described back seal detection hole
Inside it is provided with the sealing member sealing described through hole section and the screw being fixed described sealing member.In the present embodiment, described sealing member
For steel ball 17, the screw compressing steel ball 17 is recess lock-screw 16, and the afterbody correspondence steel ball 17 of described screw offers spacing
Groove.Steel ball 17 is pressed on the junction of screwed hole section and through hole section by recess lock-screw 16 after tightening, seal through hole section
Outer openings, thus reach the purpose making back seal detection hole seal.The limited impression of the afterbody of recess lock-screw 16 is cone
Type groove, it is possible to steel ball 17 is pressed tightly against.
Hereinafter coordinate with the flat gate valve closed that lost efficacy so that the operation principle of pneumatic diaphragm executor to be described.
Squeeze into driving gas by being positioned at the air inlet of upper barrier film cylinder 11, drive gas act on barrier film 14 and formed downwards
Thrust, i.e. actuator driven power；This actuator driven power passes to connecting rod 3 by diaphragm support seat 1, and connecting rod 3 one
Part actuator driven power is passed to flashboard 18 by valve rod 10 by aspect, to realize opening the purpose of gate valve, and on the other hand
Remainder actuator driven power is passed to spring 6 by spring base 2 and lays in resilience force with compression spring 6；This motor process
The elastic force of middle actuator driven power spring to be respectively overcome 6, valve rod 10 and the frictional force of filler 8, valve rod 10 are in valve medium pressure
The frictional force of extrusion force under power effect and flashboard 18 and valve seat.
When releasing driving gas in upper barrier film cylinder 11, force balance situation originally is broken, by the elastic force of spring 6
The restoring force formed with the extrusion force of valve rod 10 is got the upper hand, and respectively overcomes flashboard 18 and valve seat frictional force, valve rod 10 and filler 8
Frictional force and the self gravitation of moving component, promote valve rod 10 to drive flashboard 18 upwards to do return motion, it is achieved gate valve
Close.
When valve zero load, motor process is relatively easy, and the restoring force of driver is provided to overcome parts by spring 6 completely
Frictional force and moving component gravity, it is achieved close valve operation.
As illustrated in fig. 1 and 2, the present embodiment is separately provided back seal detection between the back seal step of filler 8 and valve gap 9
Hole, and use recess lock-screw 16 compress steel ball 17 realize seal.Relief valve is different from hand-operated valve, if examined by back seal
Gaging hole and valve greasing hole merge between the back seal step that one greasing hole of use is arranged on filler 8 and valve gap 9, detect close
During envelope no problem, but when valve is unloaded and is in free state, injecting oils and fats can be very laborious, because at the elastic force of spring 6
Effect under, certain seal pressure can be formed at the back seal of valve rod 10 and valve gap 9, in the range of certain pressure, hinder oils and fats
Enter the process of valve pocket.And the present embodiment uses the relief valve of above-mentioned pneumatic diaphragm executor back seal detection hole and valve note
Fat hole can well solve this problem after separating.
As it is shown on figure 3, the diaphragm seal form of the pneumatic diaphragm executor of the present embodiment is described in detail below:
Cylinder body includes that barrier film cylinder 11 and lower diaphragm plate cylinder 15, upper barrier film cylinder 11 have upper sealing strip, and lower diaphragm plate cylinder 15 has
Lower seal limit, the edge of barrier film 14 is clipped between described upper sealing strip and described lower seal limit and runs through connection institute by bolt 12
Stating sealing strip, barrier film 14 and described lower seal limit, bolt 12 and nut 13 are by upper barrier film cylinder 11, barrier film 14 and lower diaphragm plate cylinder 15
It is locked together.Described upper sealing strip has the most acclivitous upper sealing surface, acclivitous angle a of upper sealing surface
It it is 1 degree to 2 degree.Lower seal limit has lower sealing surface downward-sloping outside interior, and the downward-sloping angle of lower sealing surface is with upper
The acclivitous angle of sealing surface is identical, and angle is also a, is also the angular range of 1 degree to 2 degree.In order to increase having of sealing surface
Effect contact area, lift-off seal performance, the position that the inner side of described upper sealing surface contacts with described diaphragm seal is provided with upper screw thread
Waterline, the inner side of described lower sealing surface is provided with lower screw thread waterline with the position of described membrane contacts.Upper sealing surface and lower sealing surface
All setting the inclined-plane being angled a, first ensure that and be in sealing contact a little on screw thread waterline, secondly the existence of angle can be at bolt 12
Upper barrier film cylinder 11, lower diaphragm plate cylinder 15 edge shape is made when coordinating the upper barrier film cylinder 11 of compression, lower diaphragm plate cylinder 15 and barrier film 14 with nut 13
Become certain deflection, then define pretightning force, be conducive to sealing and the anti-loosing effect of bolt 12.
Compared to conventional design, under low temperature state when caoutchouc elasticity and ductility step-down on barrier film cylinder 11, lower diaphragm plate cylinder
The probability of the seal failure between 15 and barrier film 14 significantly reduces.
As shown in Figures 4 and 5, the relief valve of the pneumatic diaphragm executor that have employed the present embodiment carries out latus rectum test regulation
Process and advantage are described as follows:
Adjusting nut 5, recess lock-screw 4 bar 3 that is connected uses, and assembling uses assembling side from bottom to top
Formula, first assembles complete by other parts of valve rod 10 and valve, together with flashboard 18, valve rod 10 is pressed to bottom, i.e. flashboard 18 end
Portion and valve body inner bottom part joint；The most first connecting rod 3 is passed through screw thread dextrorotation to being close to position with adjusting nut 5
The step phase on (not tightening, two part surfaces contact), the i.e. upper surface of adjusting nut 5 and the top, periphery of connecting rod 3
Contact, then screws with valve rod 10 clockwise by connecting rod 3, and connecting rod 3 and valve rod 10 are screwed into by screw thread till can not revolving again,
Now state is as shown in Figure 4, flashboard runner centerline hole M and valve flowing channel centerline hole N misaligned (M is positioned at below N), now
Jack rabbit cannot pass through.Now begin to regulation, keep connecting rod 3 motionless, adjusting nut 5 is rotated counterclockwise, regulation
The outside step surface of valve gap 9 is supported in the support surface of the lower end of nut 5, and now connecting rod 3 starts to move upward under threaded function,
Then band ovable valve stem 10 and flashboard 18 move upward, and treat that flashboard runner centerline hole M coincides with valve flowing channel centerline hole N
Time, after insertion jack rabbit checking is qualified, recess lock-screw 4 is screwed in adjusting nut 5 with locking connecting rod 3 and adjusting nut 5；
Now state is as it is shown in figure 5, whole regulation process i.e. determines connecting rod 3 and adjusting nut 5 at valve latus rectum eligible state (lock
Plate runner centerline hole M coincides with valve flowing channel centerline hole N) under relative position.Carry out undersetting and spring 6 etc. afterwards
The subsequent installation of pneumatic diaphragm executor's miscellaneous part, latus rectum regulation settles at one go.
Compared to using pad to carry out latus rectum regulation, pneumatic diaphragm executor's governing speed of the present embodiment is fast, convenient, one
Step puts in place, without repetitive operation.
Above-described embodiment, only for technology design and the feature of the explanation present invention, its object is to allow person skilled in the art
Scholar will appreciate that present disclosure and implements according to this, can not limit the scope of the invention with this, all according to the present invention
The equivalence that spirit is made changes or modifies, and all should contain within protection scope of the present invention.
Claims (10)
1. a pneumatic diaphragm executor, including cylinder body, is arranged on the barrier film in described cylinder body and diaphragm support seat, described cylinder body
Bottom be provided with the valve gap with flat gate valve and fix the undersetting being connected, described undersetting is provided with spring, described spring upper
End is provided with spring base, and described spring base is provided with the connecting rod that the valve rod with described flat gate valve is connected, and described valve gap also sets
Have filler and gland, it is characterised in that: on the outer circumference surface of the bottom of described connecting rod threaded have can go up downward
The adjusting nut of joint fixed position, the lower end of described adjusting nut has the support surface offseted with described gland；Described valve
Being provided with the back seal step supporting described filler in lid, the activity from described back seal step of described valve rod passes, described valve rod
And it is provided with back seal structure between described back seal step, described valve gap offers falling of inside and outside through described back seal step
Sealing detection hole, described flat gate valve is also additionally provided with valve greasing hole.
Pneumatic diaphragm executor the most according to claim 1, it is characterised in that: described back seal structure includes being arranged on institute
State the back seal that the back seal on the outer circumference surface of valve rod is protruding and is arranged on the lower ending opening edge of described back seal step
Inclined-plane.
Pneumatic diaphragm executor the most according to claim 1 and 2, it is characterised in that: in described back seal detection hole includes
The through hole section of outer connection and screwed hole section, be provided with in described back seal detection hole and seal the sealing member of described through hole section and compress solid
The screw of fixed described sealing member.
Pneumatic diaphragm executor the most according to claim 3, it is characterised in that: described sealing member is steel ball, described screw
The corresponding described steel ball of afterbody offer limited impression.
Pneumatic diaphragm executor the most according to claim 1, it is characterised in that: it is additionally provided with described on described adjusting nut
Adjusting nut locks, with described connecting rod, the connector being connected.
Pneumatic diaphragm executor the most according to claim 1 or 5, it is characterised in that: the upper end of described valve gap is provided with annular
Step, the inner side of described step has the inner side step face corresponding with the lower surface of described connecting rod, the outside of described step
There is the outside step surface corresponding with the support surface of described adjusting nut.
Pneumatic diaphragm executor the most according to claim 1, it is characterised in that: described cylinder body include barrier film cylinder and under every
Film cylinder, described upper barrier film cylinder has upper sealing strip, and described lower diaphragm plate cylinder has lower seal limit, and the edge of described barrier film is clipped in described
Described upper sealing strip, described barrier film and described lower seal is connected between upper sealing strip and described lower seal limit and by bolt-through
Limit, described upper sealing strip has the most acclivitous upper sealing surface, and described lower seal limit has and dips down outside interior
Oblique lower sealing surface.
Pneumatic diaphragm executor the most according to claim 7, it is characterised in that: the described acclivitous angle of upper sealing surface
It it is 1 degree to 2 degree；The downward-sloping angle of described lower sealing surface is 1 degree to 2 degree.
9. according to the pneumatic diaphragm executor described in claim 7 or 8, it is characterised in that: the inner side of described upper sealing surface and institute
The position stating diaphragm seal contact is provided with screw thread waterline, and the inner side of described lower sealing surface is provided with the position of described membrane contacts
Lower screw thread waterline.
10. a relief valve, including flat gate valve, described flat gate valve includes valve body, valve rod, valve gap and flashboard, and its feature exists
In: described relief valve also includes the pneumatic diaphragm executor described in claim 1, and described undersetting is fixed on described valve gap,
The lower end of described valve rod is connected with described flashboard, its upper end through after described valve gap and described gland with described connecting rod spiral shell
Stricture of vagina connects.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620670042.0U CN205745581U (en) | 2016-06-30 | 2016-06-30 | A kind of pneumatic diaphragm executor and relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620670042.0U CN205745581U (en) | 2016-06-30 | 2016-06-30 | A kind of pneumatic diaphragm executor and relief valve |
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| CN205745581U true CN205745581U (en) | 2016-11-30 |
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| CN201620670042.0U Expired - Fee Related CN205745581U (en) | 2016-06-30 | 2016-06-30 | A kind of pneumatic diaphragm executor and relief valve |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909858A (en) * | 2016-06-30 | 2016-08-31 | 纽威石油设备（苏州）有限公司 | Pneumatic diaphragm actuator and safety valve |
| CN108999982A (en) * | 2018-07-25 | 2018-12-14 | 江苏控真空注胶技术有限公司 | A kind of piston-type measurement valve |
| CN109185513A (en) * | 2018-11-29 | 2019-01-11 | 美钻深海能源科技研发（上海）有限公司 | A kind of novel pneumatic diaphragm type safety valve and its method |
| CN110582661A (en) * | 2017-03-31 | 2019-12-17 | 株式会社富士金 | Controller |
| CN110906046A (en) * | 2019-12-02 | 2020-03-24 | 厚力德机器（杭州）有限公司 | Vacuum drainage electroless pure mechanical actuator |
-
2016
- 2016-06-30 CN CN201620670042.0U patent/CN205745581U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909858A (en) * | 2016-06-30 | 2016-08-31 | 纽威石油设备（苏州）有限公司 | Pneumatic diaphragm actuator and safety valve |
| WO2018000600A1 (en) * | 2016-06-30 | 2018-01-04 | 纽威石油设备（苏州）有限公司 | Pneumatic diaphragm actuator and safety valve |
| CN110582661A (en) * | 2017-03-31 | 2019-12-17 | 株式会社富士金 | Controller |
| US11035493B2 (en) | 2017-03-31 | 2021-06-15 | Fujikin Incorporated | Controller |
| TWI757461B (en) * | 2017-03-31 | 2022-03-11 | 日商富士金股份有限公司 | controller |
| CN108999982A (en) * | 2018-07-25 | 2018-12-14 | 江苏控真空注胶技术有限公司 | A kind of piston-type measurement valve |
| CN108999982B (en) * | 2018-07-25 | 2024-05-28 | 江苏一控真空注胶技术有限公司 | Piston type metering valve |
| CN109185513A (en) * | 2018-11-29 | 2019-01-11 | 美钻深海能源科技研发（上海）有限公司 | A kind of novel pneumatic diaphragm type safety valve and its method |
| CN110906046A (en) * | 2019-12-02 | 2020-03-24 | 厚力德机器（杭州）有限公司 | Vacuum drainage electroless pure mechanical actuator |
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