CN107084277B - Buffering type pilot automatic valve based on strut buckling triggering - Google Patents
Buffering type pilot automatic valve based on strut buckling triggering Download PDFInfo
- Publication number
- CN107084277B CN107084277B CN201710521589.3A CN201710521589A CN107084277B CN 107084277 B CN107084277 B CN 107084277B CN 201710521589 A CN201710521589 A CN 201710521589A CN 107084277 B CN107084277 B CN 107084277B
- Authority
- CN
- China
- Prior art keywords
- valve
- push rod
- guide
- switch
- piston
- 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.)
- Active
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
- 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
-
- 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
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/226—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having elastic elements, e.g. springs, rubber pads
-
- 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
- F15B15/26—Locking mechanisms
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention belongs to automatic control technology fields, and in particular to a kind of buffering type pilot automatic valve based on strut buckling triggering.It includes the switch valve being installed on pipeline, and the valve rod of the switch valve is connected with switch executive mechanism；Strut buckling guide's trigger mechanism is provided on the pipeline of the switch valve upstream；When unstability bending occurs for the compression bar of the strut buckling guide trigger mechanism, the switch executive mechanism movement is triggered, and then the switch executive mechanism controls the switch valve and opens or closes；The switch executive mechanism is provided with pressure buffer mechanism.The present invention is stable and reliable in work, can reduce the impact force that valve opens or closes moment, stabilize and increase service life of equipment conducive to system pressure.
Description
Technical field
The invention belongs to automatic control technology fields, and in particular to a kind of to automatically turn on when pressure is more than setting value
Or the valve closed.
Background technique
In order to protect pressure pipeline, pressure vessel and the device and equipment of their upstream and downstream, it is often necessary to which setting is super
The valve that can be automatically turned on or close under pressure operating condition.In previous practice, pressure pipe is detected usually using pressure transmitter
Pressure in road or pressure vessel, pressure transmitter output signal to control system, when pressure is more than setting value, control system
System, which can issue automatically instruction, makes valve opening or closing.
Realize the main potential risk of automatic open close valve under superpressure operating condition jointly using pressure transmitter and control system
It is, if signal transmission of the pressure transmitter failure perhaps between pressure transmitter and control system goes wrong or control
Signal transmission between system processed and valve goes wrong, it is possible to pressure occurs and already exceed setting value, valve is not but as scheduled
The situation of movement is threatened to pressure pipeline, the device of pressure vessel and their upstream and downstream and equipment belt, is unfavorable for production peace
Full stable operation.
Type pilot automatic valve obtains more and more extensive application as a result,.There is also following technologies for existing type pilot automatic valve
Problem:
(1) when valve does closing motion, the instant impact that one side valve is subject to can be larger, be easy to cause in valve
Parts damages are unfavorable for improving the service life of valve, on the other hand do not buffer since valve event is too fast, will cause system
Pressure fluctuating in inner is excessive, is unfavorable for system pressure and stablizes.
(2) valve switch executing agency is when completion execution order needs to reset again, due to the spring in executing agency
Thrust is larger, causes hand-reset difficult, time-consuming and laborious.
Summary of the invention
In order to solve the above-mentioned technical problem, the purpose of the present invention is to provide a kind of buffering based on strut buckling triggering is first
Conductivity type automatic valve, it is not only stable and reliable in work, and valve may be implemented and slowly act, so as to reduce valve open or
The impact force of turn-off transient.
To realize the above-mentioned technical purpose, the following technical solution is employed by the present invention:
Based on the buffering type pilot automatic valve of strut buckling triggering, including the switch valve being installed on pipeline, the switch
The valve rod of valve is connected with switch executive mechanism；It is provided with strut buckling guide on the pipeline of the switch valve upstream and triggers machine
Structure；When unstability bending occurs for the compression bar of the strut buckling guide trigger mechanism, the switch executive mechanism movement is triggered, in turn
The switch executive mechanism controls the switch valve and opens or closes；The switch executive mechanism is provided with pressure buffer mechanism.
Preferably, the switch executive mechanism includes cylinder body, push rod is slidably fitted in the cylinder body, the push rod is remote
One end from the strut buckling guide trigger mechanism is connected with execution piston, is arranged between the execution piston and the cylinder body
There is compressed spring；The shift fork being connected with the valve rod, the band when push rod moves in a straight line hingedly are installed on the push rod
It moves the shift fork and then changes the valve position state of the switch valve；The push rod is close to the strut buckling guide trigger mechanism
The cylinder body is stretched out in one end, is provided with lockable mechanism between the push rod and the strut buckling guide trigger mechanism.
Preferably, the pressure buffer mechanism includes the buffering gas being arranged between the cylinder body and the execution piston
Chamber, is provided on the cylinder body and exhaust pipe that the buffering air cavity is connected.
Preferably, being equipped with regulating valve on the exhaust pipe.
As one of preferred embodiment, the strut buckling guide trigger mechanism includes guide valve blocks, the pilot valve
First chamber and second chamber are divided by diaphragm or piston in vivo, first chamber is by upstream pressure guiding pipe and is located at the switch
The pipeline of valve upstream is connected, and the mandril being connected with the diaphragm or piston is slidably fitted in the guide valve blocks, described
The guide valve blocks are stretched out at the both ends of mandril respectively, and the mandril is connected with frizzen far from one end of the push rod；The lock
Locking mechanism is set between the mandril and the push rod；
When pressure is more than setting value in first chamber, unstability bending occurs for the frizzen, at this time the lockable mechanism
It releases and the switch executive mechanism is limited, the piston that executes in the elastic potential energy of compressed spring acts on lower compression and to described
It is mobile to buffer air cavity direction, and then drives shift fork movement that switch valve is made to change into improper valve position by normal valve position by push rod.
As another preferred embodiment, the strut buckling guide trigger mechanism includes guide valve blocks, the guide valve blocks
Interior to be divided into first chamber and second chamber by diaphragm or piston, first chamber is by upstream pressure guiding pipe and is located at the switch valve
The pipeline of upstream is connected, and second chamber is connected by downstream pressure guiding pipe with the pipeline for being located at the switch valve downstream；It is described
The mandril being connected with the diaphragm or piston is slidably fitted in guide valve blocks, the elder generation is stretched out at the both ends of the mandril respectively
Pilot valve body, the mandril are connected with frizzen far from one end of the push rod；The lockable mechanism is set to the mandril and institute
It states between push rod；
When the pressure difference of first chamber and second chamber is more than setting value, unstability bending occurs for the frizzen, at this time
The lockable mechanism, which releases, limits the switch executive mechanism, and the piston that executes is under the elastic potential energy effect of compressed spring
Oppress it is simultaneously mobile to the buffering air cavity direction, and then drive shift fork to act by push rod to change into switch valve by normal valve position non-
Normal valve position.
Preferably, the lockable mechanism includes the push rod limit plate being set on the push rod and is set to the top
Rocker arm on bar opens plate, and the two sides of the push rod limit plate are respectively arranged with locking rocker arm；The switch valve is in normal valve
When position, the rocker arm opens plate two locking rocker arms of limitation and is in open configuration, and two locking rocker arms limit push rod limit plates
Position.
Preferably, the buffering type pilot automatic valve based on strut buckling triggering, further includes push rod resetting-mechanism.
Preferably, the push rod resetting-mechanism is hydraulic resetting-mechanism comprising what is be fixedly installed on the cylinder body leads
To set, be slidably installed return piston in the guide sleeve, and one end of the return piston is equipped with Hynautio-steering, described
The other end of return piston is connected with release link.
Preferably, indent is provided with the dashpot being adapted to the guide sleeve, the dashpot on the execution piston
It is connected with the buffering air cavity.
Due to the adoption of the above technical scheme, the present invention have it is at least following the utility model has the advantages that
(1) since switch executive mechanism is provided with pressure buffer mechanism, when valve is closed under compressed spring effect, delay
The intracavitary air pressure of qi of chong channel ascending adversely increases, and reversed cushion effect is provided, so as to so that valve slowly closing, reduces valve turn-off transient
Impact force is not only conducive to extend the service life of valve, but also ensure that the slow stable regulation of system pressure.By adjusting adjusting
The aperture of valve, the speed of releasing of adjustable buffering gas intracavity gas, so as to adjust the closing velocity of valve.
(2) push rod resetting-mechanism uses hydraulic reset, after compressed spring release elastic potential energy is completed to execute order, resets
Even if the compression bounce of compressed spring is very big in the process, hand-hydraulic reset also may be implemented.
(3) pass through and upstream pressure guiding pipe and downstream pressure guiding pipe are set, the two sides of diaphragm or piston are experienced on switch valve respectively
The pressure of trip and downstream, so that the trigger force of strut buckling guide's trigger mechanism is the pressure difference of upstream and downstream, and not only
It is upstream pressure, system is more reliable and more stable.
(4) when strut buckling guide's trigger mechanism uses diaphragm structure, increase compression area, while compared to piston
Dynamic sealing is become static seal by structure, diaphragm, it is therefore prevented that leakage；And when pressure is more than setting value, action response is fast, anti-
Sensitive, more demanding especially suitable for pressure controling precision low pressure occasion is answered, sensitivity and good reliability are triggered.
Detailed description of the invention
The following drawings are only intended to schematically illustrate and explain the present invention, not delimit the scope of the invention.Wherein:
Fig. 1 is the structural schematic diagram when embodiment of the present invention one is in normal valve position；
Fig. 2 is the structural schematic diagram when embodiment of the present invention one is in improper valve position；
Fig. 3 is the reference state schematic diagram when embodiment of the present invention one resets；
Fig. 4 is the structural schematic diagram when embodiment of the present invention two is in normal valve position.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is further explained.In the following detailed description, only pass through explanation
Mode describes certain exemplary embodiments of the invention.Undoubtedly, those skilled in the art will recognize,
In the case where without departing from the spirit and scope of the present invention, described embodiment can be repaired with a variety of different modes
Just.Therefore, attached drawing and description are regarded as illustrative in nature, and are not intended to limit the scope of the claims.
Embodiment one
As shown in Figure 1, the buffering type pilot automatic valve based on strut buckling triggering, including the switch valve being installed on pipeline
10, the valve rod 11 of the switch valve 10 is connected with switch executive mechanism 20；It is provided on the pipeline of the switch valve upstream
Strut buckling guide trigger mechanism 30；When unstability bending occurs for the compression bar of the strut buckling guide trigger mechanism 30, institute is triggered
The movement of switch executive mechanism 20 is stated, and then the switch executive mechanism 20 controls the switch valve 10 and opens or closes；It is described to open
It closes executing agency 20 and is provided with pressure buffer mechanism 40.
In the present embodiment, the switch executive mechanism 20 includes cylinder body 21, is slidably fitted with push rod 22 in the cylinder body 21,
The push rod 22 is connected with far from one end of the strut buckling guide trigger mechanism 30 and executes piston 23, the execution piston 23
Compressed spring 24 is provided between the cylinder body 21；Group being connected with the valve rod 11 is hingedly installed on the push rod 22
Fork 25, the push rod 22 drive the shift fork 25 and then change the valve position state of the switch valve 10 when moving in a straight line；It is described
Push rod 22 stretches out the cylinder body 21, the push rod 22 and the compression bar close to one end of the strut buckling guide trigger mechanism 30
Lockable mechanism 50 is provided between unstability guide trigger mechanism 30.
In the present embodiment, the pressure buffer mechanism 40 includes that the cylinder body 21 and described execute are arranged between piston 23
Air cavity 41 is buffered, is provided with the exhaust pipe 42 being connected with the buffering air cavity 41 on the cylinder body 21, on the exhaust pipe 42
Regulating valve 43 is installed.When switch valve is closed under compressed spring effect, the air pressure buffered in air cavity 41 is increased, and is provided reversed
Cushion effect, so as to so that valve slowly closing, reduces the impact force of valve turn-off transient, not only be conducive to extend making for valve
With the service life, and it ensure that the slow stable regulation of system pressure.By adjusting the aperture of regulating valve 43, adjustable buffering air cavity
The speed of releasing of gas in 41, so as to adjust the closing velocity of valve.
In the present embodiment, the strut buckling guide trigger mechanism 30 includes guide valve blocks 31, in the guide valve blocks 31
First chamber 33 and second chamber 34 are divided by diaphragm 32, first chamber 33 is by upstream pressure guiding pipe 35 and is located at the switch
The pipeline of 10 upstream of valve is connected, and the mandril 36 being connected with the diaphragm 32, institute are slidably fitted in the guide valve blocks 31
The guide valve blocks 31 are stretched out at the both ends for stating mandril 36 respectively, and the mandril is connected with frizzen far from one end of the push rod 22
37；The lockable mechanism 50 is set between the mandril 36 and the push rod 22；When pressure is more than setting in first chamber 33
When value, unstability bending occurs for the frizzen 37, and the lockable mechanism 50, which releases, at this time limits the switch executive mechanism 20,
It is described to execute elastic potential energy effect lower compression of the piston 23 in compressed spring 24 and mobile, the execution to 41 direction of buffering air cavity
Piston 23 drives push rod 22 to move in a straight line, and then drives shift fork 25 to act by push rod 22, changes switch valve by normal valve position
For improper valve position.Using diaphragm structure, increase compression area, while compared to piston structure, diaphragm becomes dynamic sealing
Static seal, it is therefore prevented that leakage；And when pressure is more than setting value, action response is fast, is quick on the draw, especially suitable for pressure
The higher low pressure occasion of control accuracy requirement triggers sensitivity and good reliability.
As described above, guide's trigger mechanism 30 is designed based on pressure bar stabilization and strut buckling principle, there are two works for tool
Make position.It determines which operating position is the mechanism be in, and then determines that the component whether entire automatic valve acts is triggering
Bar 37, the outside of the frizzen 37 are provided with protective cover 38, and the frizzen 37 is removable by nut and the protective cover 38
Unload connection.When pressure is more than setting value in first chamber 33, by diaphragm 32, quickly transmitting makes the triggering to pressure medium
Unstability bending occurs for bar 37, and the lockable mechanism 50, which releases, at this time limits the switch executive mechanism 20, and then the switch
20 trigger switch valve 10 of executing agency changes into improper valve position by normal valve position.
In the present embodiment, the lockable mechanism 50 includes the push rod limit plate 51 being set on the push rod 22 and setting
Plate 52 is opened in the rocker arm on the mandril 36, the two sides of the push rod limit plate 51 rotate respectively is provided with locking Rocker arm 53；
When the switch valve 10 is in normal valve position, the rocker arm opens the two locking Rocker arm 5s 3 of limitation of plate 52 and is in open configuration, and
Two locking Rocker arm 5s 3 limit the position of push rod limit plate 51, and such push rod 22 will receive the limitation of two locking Rocker arm 5s 3 and nothing
Method movement.The free end of two locking Rocker arm 5s 3 is mounted on bearing 54, to reduce frictional force when movement.
In addition, further including push rod resetting-mechanism 60, push rod resetting-mechanism described in the present embodiment 60 is hydraulic resetting-mechanism,
It includes the guide sleeve 61 being fixedly installed on the cylinder body 21, and be slidably installed return piston 62 in the guide sleeve 61, institute
The one end for stating return piston 62 is equipped with Hynautio-steering, and the other end of the return piston 62 is connected with release link 63.Wherein,
Hynautio-steering includes hydraulic fluid tank 64, and hydraulic cylinder 65 is provided in the hydraulic fluid tank, and the hydraulic cylinder 65 passes through hydraulic tube 68
It is connected to the guide sleeve 61, check valve is installed on the hydraulic tube 68；Between the hydraulic tube 68 and the hydraulic fluid tank 64
It is provided with return pipe 69；Hydraulic piston 66 is provided in the hydraulic cylinder 65, the hydraulic piston 66 is connected with operating stick 67, institute
One end and the hydraulic fluid tank 64 for stating operating stick 67 are hinged.In the present embodiment, indent is provided with and institute on the execution piston 23
The dashpot 44 of the adaptation of guide sleeve 61 is stated, the dashpot 44 is connected with the buffering air cavity 41.
Working principle of the present invention is as follows:
With reference to Fig. 1, when pressure medium is lower than setting pressure in switch valve upstream line, i.e. the first chamber of guide valve blocks 31
For pressure in room 33 lower than setting pressure, the load that frizzen 37 is born at this time pressure bar stabilization less than its critical load works as touching
When hair bar 37 is in pressure bar stabilization state, the axial thrust of frizzen 37 can make mandril 36, diaphragm 32 and rocker arm open plate 52
In operating position one, rocker arm opens plate 52 and blocks two openings of locking Rocker arm 53 at this time, prevents the rotation of locking Rocker arm 53
Transhipment is dynamic, and two locking Rocker arm 5s 3 push down push rod limit plate 51, and axial linear movement, compressed spring 24 will not occur for push rod 22
Elastic potential energy can not discharge, switch valve 10 is in normal valve position.
With reference to Fig. 2, when pressure medium is higher than setting pressure in switch valve upstream line, i.e. the first chamber of guide valve blocks 31
Pressure in room 33 is higher than setting pressure, and the load that frizzen 37 is born at this time will be more than its critical load and strut buckling, funeral
Bearing capacity is lost, after bearing capacity is lost in the bending of 37 unstability of frizzen, the thrust acted on mandril 36 can drop suddenly
Low, pressure medium will push diaphragm 32 and be moved to operating position two, and in the process, mandril 36 will drive fixed thereto be integrated
Rocker arm open that plate 52 is mobile until rocker arm opens plate 52 and loses the effect of contraction to locking Rocker arm 53, push rod 22 is in compressed spring
Locking Rocker arm 53 is pushed to rotate under 24 impetus, locking Rocker arm 53 will no longer push down push rod limit plate 51, and push rod 22 is being pressed
It is moved under the impetus of contracting spring 24, switch valve 10 is changed into (if just by normal valve position by improper valve position by shift fork 25
Normal operating condition lower switch valve is in standard-sized sheet position, then superpressure operating condition lower switch valve should be automatically closed, and valve position becomes full off-position；Work if normal
Condition lower switch valve is in full off-position, then superpressure operating condition lower switch valve should automatically turn on, and valve position becomes standard-sized sheet position), to realize
The automatic opening or closing of valve when superpressure.
With reference to Fig. 3, frizzen occur unstability and pressure recovery in switch valve auto-action and pressure pipeline it is normal after,
Hydraulic resetting-mechanism, which can be used, pushes execution piston to restore to operating position one (i.e. initial position), and the triggering more renewed
Bar, entire valve are completed to reset.It also may be implemented using hydraulic resetting-mechanism even if the compression bounce of compressed spring is very big
Hand-reset.
Embodiment two
The present embodiment and one structural principle of embodiment are essentially identical, and something in common is no longer repeated, and unique difference exists
In: Fig. 4 is referred to, second chamber 34 by downstream pressure guiding pipe 39 and is located at the switch in the strut buckling guide trigger mechanism
The pipeline in 10 downstream of valve is connected.So, what the two sides of diaphragm 32 was experienced respectively is the pressure of upstream and downstream, so that
The trigger force of guide's trigger mechanism is the pressure difference of upstream and downstream, rather than just upstream pressure.
The foregoing is merely the schematical specific embodiment of the present invention, the range being not intended to limit the invention.It is any
Those skilled in the art, made equivalent changes and modifications under the premise of not departing from design and the principle of the present invention,
It should belong to the scope of protection of the invention.
Claims (5)
1. described to open including the switch valve (10) being installed on pipeline based on the buffering type pilot automatic valve of strut buckling triggering
The valve rod (11) for closing valve is connected with switch executive mechanism (20)；Strut buckling is provided on the pipeline of the switch valve upstream
Guide's trigger mechanism (30)；When unstability bending occurs for the compression bar of the strut buckling guide trigger mechanism (30), opened described in triggering
Executing agency (20) movement is closed, and then the switch executive mechanism controls the switch valve (10) and opens or closes；Its feature exists
In: the switch executive mechanism (20) is provided with pressure buffer mechanism (40)；
The switch executive mechanism (20) includes cylinder body (21), and push rod (22) are slidably fitted in the cylinder body, and the push rod is remote
One end from the strut buckling guide trigger mechanism (30), which is connected with, executes piston (23), the execution piston and the cylinder body
Between be provided with compressed spring (24)；The shift fork (25) being connected with the valve rod is hingedly installed on the push rod, it is described to push away
The shift fork is driven when bar moves in a straight line and then changes the valve position state of the switch valve；The push rod loses close to the compression bar
The cylinder body is stretched out in one end of steady guide's trigger mechanism (30), sets between the push rod and the strut buckling guide trigger mechanism
It is equipped with lockable mechanism (50)；
The pressure buffer mechanism (40) includes the buffering air cavity (41) being arranged between the cylinder body and the execution piston, described
The exhaust pipe (42) being connected with the buffering air cavity is provided on cylinder body；
The strut buckling guide trigger mechanism (30) includes guide valve blocks (31), and the guide valve blocks are interior by diaphragm (32) or living
Plug is divided into first chamber (33) and second chamber (34), and first chamber is by upstream pressure guiding pipe (35) and is located at the switch valve
The pipeline of upstream is connected, and the mandril (36) being connected with the diaphragm or piston, institute are slidably fitted in the guide valve blocks
The guide valve blocks are stretched out at the both ends for stating mandril respectively, and the mandril is connected with frizzen (37) far from one end of the push rod；
The lockable mechanism (50) is set between the mandril (36) and the push rod (22)；When pressure is more than setting in first chamber
When value, unstability bending occurs for the frizzen (37), and the lockable mechanism (50), which releases, at this time limits the switch executive mechanism
System, execute piston (23) in the elastic potential energy of compressed spring (24) act on lower compression and to buffering air cavity (41) direction
It is mobile, and then drive shift fork (25) movement that switch valve is made to change into improper valve position by normal valve position by push rod (22)；
Alternatively, the strut buckling guide trigger mechanism (30) includes guide valve blocks (31), the guide valve blocks are interior by diaphragm
(32) or piston is divided into first chamber (33) and second chamber (34), and first chamber is by upstream pressure guiding pipe (35) and is located at institute
The pipeline for stating switch valve upstream is connected, and second chamber (34) is by downstream pressure guiding pipe (39) and is located at the switch valve downstream
Pipeline is connected；The mandril (36) being connected with the diaphragm or piston, the mandril are slidably fitted in the guide valve blocks
Both ends stretch out the guide valve blocks respectively, the mandril is connected with frizzen (37) far from one end of the push rod；The lock
Locking mechanism is set between the mandril and the push rod；When the pressure difference of first chamber and second chamber is more than setting value,
Unstability bending occurs for the frizzen, and the lockable mechanism, which releases, at this time limits the switch executive mechanism, described to execute work
It fills in the elastic potential energy effect lower compression in compressed spring and drives shift fork to move to buffering air cavity direction movement, and then by push rod
Work makes switch valve change into improper valve position by normal valve position；
The lockable mechanism (50) includes the push rod limit plate (51) being set on the push rod and is set on the mandril
Rocker arm open plate (52), the two sides of the push rod limit plate are respectively arranged with locking rocker arm (53)；The switch valve is in just
When normal valve position, the rocker arm opens two locking rocker arms of plate (52) limitation and is in open configuration, and two locking rocker arms (53) limits
The position of push rod limit plate (51) processed.
2. the buffering type pilot automatic valve as described in claim 1 based on strut buckling triggering, it is characterised in that: the exhaust
Regulating valve (43) are installed on pipe.
3. the buffering type pilot automatic valve as described in claim 1 based on strut buckling triggering, it is characterised in that: further include pushing away
Bar resetting-mechanism (60).
4. the buffering type pilot automatic valve as claimed in claim 3 based on strut buckling triggering, it is characterised in that: the push rod
Resetting-mechanism (60) is hydraulic resetting-mechanism comprising the guide sleeve (61) being fixedly installed on the cylinder body, in the guide sleeve
Be slidably installed return piston (62), and one end of the return piston is equipped with Hynautio-steering, the return piston it is another
One end is connected with release link (63).
5. the buffering type pilot automatic valve as claimed in claim 4 based on strut buckling triggering, it is characterised in that: the execution
Indent is provided with the dashpot (44) being adapted to the guide sleeve, the dashpot and the buffering air cavity (41) on piston (23)
It is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710521589.3A CN107084277B (en) | 2017-06-30 | 2017-06-30 | Buffering type pilot automatic valve based on strut buckling triggering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710521589.3A CN107084277B (en) | 2017-06-30 | 2017-06-30 | Buffering type pilot automatic valve based on strut buckling triggering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107084277A CN107084277A (en) | 2017-08-22 |
| CN107084277B true CN107084277B (en) | 2019-05-21 |
Family
ID=59607075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710521589.3A Active CN107084277B (en) | 2017-06-30 | 2017-06-30 | Buffering type pilot automatic valve based on strut buckling triggering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107084277B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825833A (en) * | 2018-08-03 | 2018-11-16 | 江苏瑞朗博机械设备有限公司 | A kind of valve system with isolating device |
| CN109611414B (en) * | 2019-01-29 | 2024-03-12 | 青神格林维尔流体动力控制技术有限公司 | Pilot-operated type hydraulic lock |
| CN113605857A (en) * | 2021-08-23 | 2021-11-05 | 瀚中(南京)科技有限公司 | High-low pressure pilot valve and high-low pressure emergency cut-off device for pipeline |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86205569U (en) * | 1986-08-08 | 1988-04-20 | 长庆石油勘探局钻采工艺研究所 | Self-controlled antioverpressure pneumatic high-pressure valve |
| CN2748723Y (en) * | 2004-10-22 | 2005-12-28 | 陈秀玉 | Selector valve for gas fire-extinguishing system |
| CN201575196U (en) * | 2009-12-09 | 2010-09-08 | 山东泰丰液压设备有限公司 | Hydraulic pilot-control stop valve |
| CN205371730U (en) * | 2015-11-02 | 2016-07-06 | 江苏瑞朗博机械设备有限公司 | By automatic valve of depression bar unstability trigger action during superpressure |
| CN207661195U (en) * | 2017-06-30 | 2018-07-27 | 江苏瑞朗博机械设备有限公司 | Buffering type pilot automatic valve based on strut buckling triggering |
-
2017
- 2017-06-30 CN CN201710521589.3A patent/CN107084277B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86205569U (en) * | 1986-08-08 | 1988-04-20 | 长庆石油勘探局钻采工艺研究所 | Self-controlled antioverpressure pneumatic high-pressure valve |
| CN2748723Y (en) * | 2004-10-22 | 2005-12-28 | 陈秀玉 | Selector valve for gas fire-extinguishing system |
| CN201575196U (en) * | 2009-12-09 | 2010-09-08 | 山东泰丰液压设备有限公司 | Hydraulic pilot-control stop valve |
| CN205371730U (en) * | 2015-11-02 | 2016-07-06 | 江苏瑞朗博机械设备有限公司 | By automatic valve of depression bar unstability trigger action during superpressure |
| CN207661195U (en) * | 2017-06-30 | 2018-07-27 | 江苏瑞朗博机械设备有限公司 | Buffering type pilot automatic valve based on strut buckling triggering |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107084277A (en) | 2017-08-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107084277B (en) | Buffering type pilot automatic valve based on strut buckling triggering | |
| CN108825833A (en) | A kind of valve system with isolating device | |
| CN205371730U (en) | By automatic valve of depression bar unstability trigger action during superpressure | |
| CN207661195U (en) | Buffering type pilot automatic valve based on strut buckling triggering | |
| CN202176756U (en) | Self-operated type pressure-range automatic switching valve | |
| CN104930017B (en) | Hydraulic device capable of adjusting buffer energy on two ends | |
| CN219432169U (en) | Double-rod type energy storage hydraulic rod | |
| CN207333856U (en) | Diaphragm type pilot automatic valve based on strut buckling triggering | |
| CN110725978A (en) | Device capable of being quickly and automatically closed and natural gas wellhead emergency cut-off device | |
| CN208703206U (en) | A kind of valve system with isolating device | |
| CN103883785A (en) | Air cylinder type actuator | |
| CN103867524B (en) | A kind of double-action two-stage hydraulic cylinder | |
| CN207661207U (en) | Strut buckling triggering type automatic valve based on the guiding of upstream and downstream pressure difference | |
| CN105782523B (en) | The valve member of strut buckling trigger action when superpressure | |
| CN107061815A (en) | The diaphragm type pilot automatic valve triggered based on strut buckling | |
| CN108386415A (en) | A kind of anticollision oil cylinder and engineering machinery | |
| CN104976178B (en) | Adjusting air cylinder | |
| US20170234452A1 (en) | Degressive pneumatic actuator spring rate | |
| CN207661194U (en) | Convenient for the strut buckling triggering type automatic valve of reset | |
| CN105318057A (en) | Novel membrane-assisting type compression bar instability trigger type valve assembly | |
| CN204805659U (en) | Novel diaphragm auxiliary type depression bar unstability triggers type valve member | |
| CN204805696U (en) | By automatic valve of depression bar unstability trigger action under superpressure operating mode | |
| CN108131233B (en) | A kind of tubular turbine guide vane operation protection mechanism | |
| CN201764046U (en) | Self-operated flat safety stop valve with damping device | |
| CN206522399U (en) | A kind of short distance high speed pneumatic buffer unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20170822 Assignee: Hanzhong (Nanjing) Technology Co., Ltd Assignor: Jiangsu Reliable Mechanical Equipment Co.,Ltd. Contract record no.: X2020980005319 Denomination of invention: Buffer pilot type automatic valve based on pressure bar instability trigger Granted publication date: 20190521 License type: Exclusive License Record date: 20200825 |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201104 Address after: L3039, 3 / F, Chuangye building, No. 1009, Tianyuan East Road, Jiangning District, Nanjing, Jiangsu Province Patentee after: Hanzhong (Nanjing) Technology Co., Ltd Address before: 211316, No. 17 Tan Avenue, Gaochun Economic Development Zone, Nanjing, Jiangsu Patentee before: Jiangsu Reliable Mechanical Equipment Co.,Ltd. |