CN107842642A - High-effect cut-out type single-acting pneumatic actuator - Google Patents
High-effect cut-out type single-acting pneumatic actuator Download PDFInfo
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- CN107842642A CN107842642A CN201711319414.0A CN201711319414A CN107842642A CN 107842642 A CN107842642 A CN 107842642A CN 201711319414 A CN201711319414 A CN 201711319414A CN 107842642 A CN107842642 A CN 107842642A
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- 210000004907 gland Anatomy 0.000 claims abstract description 18
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 18
- 239000003921 oil Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 24
- 238000001914 filtration Methods 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 229920006351 engineering plastic Polymers 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000002390 adhesive tape Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000010186 staining Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010466 nut oil Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
High-effect cut-out type single-acting pneumatic actuator, including cylinder modules, spring cylinder module, gas control module and hydraulic cylinder module, cylinder modules include cylinder, support, push rod, guiding mechanism and buffer gear；Spring cylinder module includes spring cylinder, baffle ring gland, spring baffle ring, spring base, interior spring, outer spring and spring end cap, and spring cylinder bottom surface is fixedly connected with the upper cylinder cover of cylinder modules, and push rod upper end is stretched into spring cylinder through spring cylinder bottom center hole；Hydraulic cylinder module includes hydraulic cylinder, oil pipeline, hydraulic oil pump and hydraulic manual stop valve, and the spring terminal that hydraulic cylinder is fixedly mounted on spring cylinder module is covered, and the hydraulic stem of hydraulic cylinder is stretched into spring cylinder, and beneficial effect is：Switch motion is steady, smooth；Buffer structure can protect the sealing surface of valve；It is hydraulic cylinder module small volume, in light weight；Spring cylinder module is easily installed, easy maintenance and replacement, use and maintenance safety, is avoided spring rust staining and is fallen into cylinder；Service life is grown.
Description
Technical field
It is the drive mechanism of valve switch action the invention belongs to technical field of valve control, more particularly to Direct Travel is cut
The single-acting pneumatic actuator of disconnected type valve.
Background technology
The characteristics of thrust characteristic of gate valve is：Required thrust is very big in the range of 0-5% valve openings, and 5%~
Required thrust is relatively small in 100% open range, or even is less than and closes the 10% of point thrust.The list of traditional opening and closing gate valve
Acting pneumatic executing agency includes cylinder portion and handwheel, and Single spring is located among cylinder, and the piston of cylinder is along cylinder block
Inwall is run up and down, and handwheel is mechanical.The characteristic of traditional single-acting pneumatic actuator is：As valve opening increases
Add, the decrement increase of actuator spring, when valve opening reaches 100%, spring force is maximum.Traditional single-acting is pneumatic
The deficiency of executing agency is：In order to allow amount of spring compression to reach maximum (i.e. valve wide open position), it has to by the face of cylinder piston
Product is done bigger, so that small product size is very big；Spring is among cylinder, when usage time is long, it may occur that spring corrosion, rust staining
Easily fall into cylinder, in piston up-down, rust staining can wear casing wall, reduce the service life of cylinder；The piston of cylinder
There is no guiding mechanism, when piston glances off, the service life of cylinder can be reduced；Mechanical handwheel, needing to push away greatly
When power, it can not realize；Push rod does not buffer when valve opening is in 0-5%, is unfavorable for the sealing surface protection of valve.
The content of the invention
It is an object of the invention to provide a kind of cut-out type single-acting matched with the thrust characteristic of gate valve pneumatically to perform
Mechanism, the output efficiency of executing agency is improved, reduce the volume of executing agency, shorten the opening and closing time of executing agency.
The technical scheme is that：High-effect cut-out type single-acting pneumatic actuator, including cylinder modules, spring cylinder
Module and gas control module, cylinder modules include cylinder, support and push rod, and cylinder includes piston, cylinder barrel, upper cylinder cover, lower cylinder cap, branch
Frame is fixed on the lower cylinder cap of cylinder modules, and push rod lower end passes through piston center hole, is fixedly connected with the piston, pushes away in the middle part of push rod
Bar lower end is stretched into support through lower cylinder cap centre bore, and upper cylinder cover is stretched out in upper end through upper cylinder cover centre bore, the position in the middle part of push rod
Circlip for shaft is fixed with upper cylinder cover upper position, push rod lower end is provided with controlled valve rod adapter sleeve and controlled valve
Valve rod attaching nut, controlled valve rod attaching nut are provided with pointer, and support is provided with scale with pointer corresponding position, on push rod
End is provided with hydraulic stem adapter sleeve and hydraulic stem attaching nut, it is characterised in that：The high-effect cut-out type single-acting pneumatically performs
Mechanism also includes hydraulic cylinder module, and the cylinder modules also include guiding mechanism and buffer gear, the piston of the cylinder modules
Centre bore both sides be arranged with two pilot holes, be provided with a circle groove outside piston week, set on the pilot hole inner periphery of piston
There is a circle groove；Above the lower cylinder cap of the cylinder modules cylindrical hole, upper cylinder half are provided with two pilot hole correspondence positions on piston
Cover and be provided with two circular holes with two pilot hole correspondence positions on piston；The guiding mechanism includes guide rod and guidance tape, two
Guide rod is engaged with piston two symmetrical pilot holes, and two guide rod lower ends are each passed through two pilot holes on piston, Gu
It is scheduled in the cylindrical hole of lower cylinder cap, two circular holes that upper end is each passed through on upper cylinder cover are fixed on upper cylinder cover；The guidance tape bag
Outer guidance tape and interior guidance tape are included, outer guidance tape is provided in the soft ribbons in outside piston week groove, and interior guidance tape is provided in
Soft ribbons in the inner periphery upper groove of piston guide hole；The buffer gear includes buffer stopper and retainer ring, and buffer stopper is a circle set,
Buffer stopper is enclosed on push rod, is fixed on below piston center hole, and retainer ring is fixedly mounted on the buffer stopper lower edge of push rod,
The centre bore of cylinder cap is shoulder hole under the cylinder modules, and below the lower cylinder cap is single order hole, and single order hole is built with one
The axle sleeve that rank hole is engaged, above lower cylinder cap is second order hole, and second order hole is engaged with buffer stopper；
The spring cylinder module includes spring cylinder, baffle ring gland, spring baffle ring, spring base, interior spring, outer spring and spring terminal
Lid, spring cylinder is tubbiness cylinder, and centre bore, spring cylinder centre bore and the axle elasticity in the middle part of push rod are provided with spring cylinder bottom center
Back-up ring external diameter is engaged, and spring inside wall of cylinder bottom is provided with ring groove, and baffle ring gland is the lid being engaged with spring cylinder bore, gear
Centre bore is provided with ring gland center, baffle ring gland centre bore is engaged with the circlip for shaft external diameter in the middle part of push rod, spring
Seat is provided with centre bore at center, and spring base centre bore is engaged with push rod external diameter, and spring baffle ring is annulus, spring baffle ring outer edge
Dividing and be arranged in the ring groove of spring cylinder bottom, the spring baffle ring inner margin portion protrusion spring inside wall of cylinder, spring base is drum type seat,
Spring base external diameter is engaged with spring cylinder bore, and baffle ring gland, spring baffle ring and spring base are sequentially arranged at spring cylinder bottom, interior
Spring is sleeved in outer spring, and interior spring and outer spring are placed on the spring base in spring cylinder, and the center of spring end cap is provided with centre bore, spring
End cap be fixed on spring cylinder it is suitable for reading on, by interior spring and outer spring pressing, spring cylinder bottom surface is fixedly connected with the upper cylinder cover of cylinder modules,
The push rod upper end of cylinder modules is stretched into spring cylinder through spring cylinder bottom center hole；
The hydraulic cylinder module includes hydraulic cylinder, oil pipeline, hydraulic oil pump and hydraulic manual stop valve, hydraulic oil pump
Inlet and outlet are connected respectively to the epicoele of hydraulic cylinder and the end interface of cavity of resorption by oil pipeline, and hydraulic manual stop valve inlet and outlet are logical
Cross oil pipeline and be connected respectively to the epicoele of hydraulic cylinder and the end interface of cavity of resorption, hydraulic cylinder is fixedly mounted on the bullet of spring cylinder module
On spring end cap, the hydraulic stem of hydraulic cylinder is stretched into spring cylinder, is fixedly connected with push rod upper end, and hydraulic oil pump connects with hydraulic oil source
Connect；
The gas control module is the pneumatic control system of cylinder modules, and the gas control module includes machine control two-position three-way valve, Chang Guan
Type two-bit triplet Pneumatic valve, Pneumatic reversal valve, normally-off 2/2-way Pneumatic valve I, rapid escape valve, pressure gauge I, filtering decompression
Valve, compressed gas source, two-bit triplet magnetic valve, plug I, normally-off 2/2-way Pneumatic valve II, open type 2/2-way Pneumatic valve,
Plug II, pressure gauge II, air-controlled manual stop valve and controller, compressed gas source are connected by the piston cavity of resorption of pipeline and cylinder modules
It is logical, filtering pressure reducing valve, pressure gauge I, quickly are sequentially connected in series on the pipeline that compressed gas source connect with the piston cavity of resorption of cylinder modules
Air bleeding valve and normally-off 2/2-way Pneumatic valve I, on the pipeline that compressed gas source connects with the piston cavity of resorption of cylinder modules and connect one
Branch line, branch line are connected with the piston upper chamber of cylinder modules, and air-controlled manual stop valve and pressure are serially connected with branch line
Power table II, on the pipeline section between air-controlled manual stop valve and pressure gauge II and connect a hand stop valve pipeline, hand stop valve
Pipeline plug II blocks, and is gone back on the pipeline section between air-controlled manual stop valve and pressure gauge II and is connected to control valve loop, controls
Valve loop processed is divided into two tunnels, the first via and the UNICOM of normally-off 2/2-way Pneumatic valve II, normally-off 2/2-way Pneumatic valve II
One orifice of control terminal and Pneumatic reversal valve, while connected with the control terminal of Pneumatic reversal valve, the of control valve loop
Two tunnels connect with open type 2/2-way Pneumatic valve, another interface of open type 2/2-way Pneumatic valve and normally-off two-bit triplet gas
Control valve connection, the control terminal of normally-off two-bit triplet Pneumatic valve and second orifice of Pneumatic reversal valve, open type two
The control terminal and the 3rd orifice of Pneumatic reversal valve of two logical Pneumatic valves, the control terminal of normally-off 2/2-way Pneumatic valve I with
One orifice of two-bit triplet magnetic valve, another interface of two-bit triplet magnetic valve and pressure gauge I and rapid escape valve it
Between pipeline section connection, the control terminal of two-bit triplet magnetic valve is connected with controller, machine control two-position three-way valve installed in and cylinder mould
At the controlled valve rod attaching nut outer rim touching of block push rod lower end, controlled valve rod during positioned at controlled 8% aperture of valve
The location of attaching nut, compressed gas source is at controlled valve scene.
High-effect cut-out type single-acting pneumatic actuator of the present invention, it is characterised in that：The hydraulic stem and push rod
By hydraulic stem, attaching nut is fixedly connected.
High-effect cut-out type single-acting pneumatic actuator of the present invention, it is characterised in that：The guidance tape is rubber
Band or engineering plastics band.
The operation method of high-effect cut-out type single-acting pneumatic actuator of the present invention, including controlled valve opening and
Controlled valve is closed, it is characterised in that：The controlled valve open method is as follows：Open the hydraulic manual cut-off of hydraulic cylinder module
Valve, start hydraulic oil pump, manually close air-controlled manual stop valve, compressed gas source, controller control two-bit triplet electricity is opened manually
Magnet valve obtains electric, and compressed gas enters the piston cavity of resorption of cylinder modules, and the piston upper chamber compressed gas discharge of cylinder modules, piston transports upwards
Dynamic, push rod drives controlled valve rod to move upwards, the spring-compressed of spring cylinder module, valve opening；The controlled valve closes
Closure includes two processes：
Controlled valve is closed to the process of 8% aperture and controlled valve from 100% aperture and closed from 8% aperture to the mistake of contract fully
Journey, it is as follows that the controlled valve from 100% aperture closes process approach to 8% aperture：The state of hydraulic cylinder module is kept, manually
Air-controlled manual stop valve, controller control two-bit triplet magnetic valve dead electricity are closed, the piston upper chamber and cavity of resorption of cylinder modules turn on,
Piston moves downward under spring force, and push rod drives controlled valve rod to move downwardly to machine control two-position three-way valve with pushing away
The controlled valve rod attaching nut outer rim touching of bar lower end, controlled valve are closed to 8% aperture；The controlled valve is opened from 8%
Degree is closed to contract fully process：The state of hydraulic cylinder module is kept, keeps hand stop valve to close and is lost with two-bit triplet magnetic valve
Electricity condition, after the controlled valve rod attaching nut outer rim touching of machine control two-position three-way valve Yu push rod lower end, piston is in spring
Move downward under the collective effect of power and cylinder force, completely closed to valve.
The present invention principle be：Valve opening process, start hydraulic cylinder module hydraulic oil pump, to hydraulic cylinder epicoele and cavity of resorption
Fuel feeding, the hydraulic manual stop valve of hydraulic cylinder module are opened, and hydraulic cylinder epicoele connects with cavity of resorption, make hydraulic cylinder epicoele and cavity of resorption oil
Weighing apparatus is flattened, two-bit triplet magnetic valve obtains electric, and normally-off two-bit triplet Pneumatic valve control terminal is without gas, in Chang Guanwei, compressed gas source
Compressed gas be divided into two-way after filtering pressure reducing valve and pressure gauge I, gas enters normally-off two through rapid escape valve all the way
The pipeline of two logical Pneumatic valves I, another way gas pass through two-bit triplet magnetic valve, and the compressed gas by two-bit triplet magnetic valve is divided into three
Road, the first via enter the control terminal of normally-off 2/2-way Pneumatic valve I so that the main road of normally-off 2/2-way Pneumatic valve I is led
Logical, compressed gas enters the piston cavity of resorption of cylinder modules, and the second road enters normally-off 2/2-way Pneumatic valve II, normally-off two
Two logical Pneumatic valves II are turned on and are vented, the piston upper chamber compressed gas discharge of cylinder modules, piston upwards, push rod band ovable valve stem
Motion upwards, the spring-compressed of spring cylinder module, valve opening, the 3rd road enters the control terminal and main road of Pneumatic reversal valve
In, compressed gas source turns on open type 2/2-way Pneumatic valve, open type 2/2-way Pneumatic valve is in off-position, cylinder modules
Piston upper chamber and cavity of resorption be not turned on；During valve opening, process that push rod moves upwards, machine control two-position three-way valve have passed through
Two stages of valve rod attaching nut touching and disengaging touching with push rod lower end, setting in motion stage, the valve rod of push rod lower end
Attaching nut is in touches state with machine control two-position three-way valve, and the valve rod attaching nut in push rod lower end, which moves to, leaves machine control two
After position three-way valve touch points, machine control two-position three-way valve is in touchless state, and electricity condition, machine control two are obtained in two-bit triplet magnetic valve
Position three-way valve, which is in, has touching state or touchless state on control gas circuit operation without influence；
Valve is closed to 8% aperture process from 100% aperture, and hydraulic cylinder module status is constant, controller control two-bit triplet
Magnetic valve dead electricity, machine control two-position three-way valve are touched without machinery, and in exhaust condition, air-controlled manual stop valve is closed, Quick air-discharge
Valve one-way passage, normally-off two-bit triplet Pneumatic valve control terminal is without gas, and in Chang Guanwei, the compressed gas of compressed gas source is by filtering
It is divided into two-way after pressure-reducing valve and pressure gauge I, gas enters the master of normally-off 2/2-way Pneumatic valve I by rapid escape valve all the way
Road, another way gas enter two-bit triplet magnetic valve, the two-bit triplet solenoid valve vents of power failure state, normally-off 2/2-way gas control
The main road of valve I is obstructed, and without gas, normally-off 2/2-way Pneumatic valve II is in often to close the control terminal of normally-off 2/2-way Pneumatic valve II
Position, the control terminal of Pneumatic reversal valve and main road by solenoid valve vents, the commutation of main road compressed gas make machine control two-position three-way valve and
The control terminal conducting of open type 2/2-way Pneumatic valve, machine control two-position three-way valve are in exhaust position, open type 2/2-way gas control
For the control terminal of valve without gas, open type 2/2-way Pneumatic valve is in normally opened position, and the piston upper chamber and cavity of resorption of cylinder modules turn on,
Piston moves downward in the presence of spring force, and push rod band ovable valve stem moves downward, and valve is in off status, to machine control two-bit triplet
Valve machinery touching, the piston upper chamber and cavity of resorption compressed gas of cylinder modules reach poised state, and air pressure is equal, and valve is closed to 8%
Aperture；
Valve is closed to contract fully process from 8% aperture, and hydraulic cylinder module status is constant, and two-bit triplet magnetic valve keeps losing
Electricity, valve rod attaching nut's outer rim of machine control two-position three-way valve machinery touching push rod lower end, in the conduction state, gas control manual shutoff
Valve is closed, and rapid escape valve one-way passage, normally-off two-bit triplet Pneumatic valve control terminal turns on upper chamber of air cylinder, normally-off two
Threeway Pneumatic valve is in open position exhaust condition, the exhaust of cylinder modules piston cavity of resorption, and the compressed gas of compressed gas source depressurizes by filtering
It is divided into two-way after valve and pressure gauge I, gas enters the main road of normally-off 2/2-way Pneumatic valve I by rapid escape valve all the way；
Another way gas enters two-bit triplet magnetic valve, two-bit triplet solenoid valve vents during dead electricity so that normally-off 2/2-way Pneumatic valve I
Main road is obstructed, and the control terminal of normally-off 2/2-way Pneumatic valve II is in Chang Guanwei, gas without gas, normally-off 2/2-way Pneumatic valve II
The piston upper chamber of cylinder module can not be vented, and the control terminal and main road of Pneumatic reversal valve pass through two-bit triplet solenoid valve vents, main road
Commutation so that the control terminal of machine control two-position three-way valve and open type 2/2-way Pneumatic valve turns on, open type 2/2-way gas control
The control terminal of valve turns on the piston upper chamber of cylinder modules, and open type 2/2-way Pneumatic valve is in off-position, and piston is in spring force
Move downward with the collective effect of source of the gas power, completely closed to valve.
The beneficial effects of the invention are as follows：
1. pair guide rod guide frame, guidance quality is more preferable, ensures axiality, can effectively reduce piston and inner wall of cylinder
Friction, switch motion is more steady, smooth, extends the service life of actuator.
2. guidance tape is soft guide frame, frictional resistance is small, and guidance quality is more preferable, and switch motion is more steady, smooth, extends
The service life of actuator.
3. small guide vane buffer structure, it can both ensure that normal valve opening and closing was rapid, again can be slow in valve small guide vane
Valve is closed, the sealing surface of valve is preferably protected, extends valve service life.
4. hydraulic cylinder module has the characteristics of stroke length and big thrust, small volume, in light weight, time saving and energy saving, achievable hand
Move and be automatically switched fast, there is auto-lock function.
5. spring cylinder module is integrated, both it was easily installed, and facilitated on-line maintenance and replacing again, and saved maintenance cost
And the time, there is spring anti-dropping to go out design, spring ejection in installation process can be avoided to hurt sb.'s feelings.
6. spring cylinder is divided into respective absolute construction with cylinder, avoids spring rust staining and fall into cylinder, extend the use of cylinder
Life-span.
7th, spring uses two-man act structure, and pass acts more steady, smooth.
8th, the design of gas control module, the characteristic curve for being optimal the switching point of gas circuit, the defeated of executing agency is improved
Go out efficiency, the mutual conversion of two logic strokes of executing agency is controlled by machine control valve, realize the effect of small size high thrust.
Brief description of the drawings
Accompanying drawing 1 is high-effect cut-out type single-acting pneumatic actuator structural representation
Accompanying drawing 2 is high-effect cut-out type single-acting pneumatic actuator hydraulic cylinder structure schematic diagram
Accompanying drawing 3 is high-effect cut-out type single-acting pneumatic actuator spring cylinder structural representation
Accompanying drawing 4 is high-effect cut-out type single-acting pneumatic actuator hydraulic pressure handwheel fluid pressure line schematic diagram
Accompanying drawing 5 is high-effect cut-out type single-acting pneumatic actuator structural air control schematic diagram
Accompanying drawing 6 is that high-effect cut-out type single-acting pneumatic actuator structural air control valve unlatching section working condition is shown
It is intended to
Accompanying drawing 7 is that high-effect cut-out type single-acting pneumatic actuator structural air control valve closes 100%-8% sections
Working state schematic representation
Accompanying drawing 8 is that high-effect cut-out type single-acting pneumatic actuator structural air control valve closes the work of 8%-0 sections
View
Accompanying drawing 9 is the spring cylinder module bottom partial enlargement signal of high-effect cut-out type single-acting pneumatic actuator structure
Figure
Accompanying drawing 10 is that the buffer stopper partial enlargement of high-effect cut-out type single-acting pneumatic actuator structure cylinder modules shows
It is intended to
Accompanying drawing 11 is the pneumatic actuator structural representation of prior art
In figure, 1, support, 2, valve rod adapter sleeve, 3, valve rod attaching nut, 4, push rod, 5, axle sleeve, 6, retainer ring, 7, buffering
Block, 8, lower cylinder cap, 9, piston, 10, guide rod, 11, snap ring gland, 12, locating part, 13, cylinder barrel, 14, upper cylinder cover, 15, nut,
16th, circlip for shaft, 17, O-ring I, 18, O-ring II, 19, O-ring III, 20, O-ring IV, 21, O-ring V, 22, O-shaped
Circle VI, 23, interior guidance tape, 24, outer guidance tape, 25, soket head cap screw, 26, soket head cap screw, 27, outer-hexagonal bolts, 28, bullet
Pad, 29, holding screw, 30, pointer, 31, serrated nut, 32, spring cylinder, 33, baffle ring gland, 34, spring baffle ring, 35, spring
Seat, 36, interior spring, 37, outer spring, 38, spring end cap, 39, O-ring VII, 40, elastic spring, 41, outer-hexagonal bolt, 42, spring washer,
43rd, hydraulic cylinder, 44, outer-hexagonal bolt, 45, spring washer, 46, oil pipeline, 47, hydraulic oil pump, 48, hydraulic manual stop valve, 49,
The cylinder of gas control module, 50, machine control two-position three-way valve, 51, normally-off two-bit triplet Pneumatic valve, 52, Pneumatic reversal valve, 53, often
Pass type 2/2-way Pneumatic valve I, 54, rapid escape valve, 55, pressure gauge I, 56, filtering pressure reducing valve, 57, compressed gas source, 58, two
Position-3-way solenoid valve, 59, plug I, 60, normally-off 2/2-way Pneumatic valve II, 61, open type 2/2-way Pneumatic valve, 62, stifled
First II, 63, pressure gauge II, 64, air-controlled manual stop valve, 65, controller, 66, hydraulic cylinder, 67, hydraulic stem attaching nut, 68,
Hydraulic stem adapter sleeve, 69, scale, 70, mechanical handwheel, 71, the spring strut of prior art, 72, the spring of prior art.
Embodiment
Below in conjunction with drawings and examples, the present invention will be further described.
High-effect cut-out type single-acting pneumatic actuator, including cylinder modules, spring cylinder module, gas control module and hydraulic pressure
Cylinder module, cylinder modules include cylinder, support 1 and push rod 4, and cylinder includes piston 9, cylinder barrel 13, upper cylinder cover 14 and lower cylinder cap 8,
Support is fixed on the lower cylinder cap 8 of cylinder modules, and the lower end of push rod 4 passes through the centre bore of piston 9, and middle part and the piston 9 of push rod 4 are fixed
Connection, is equipped with O-ring VI 22, the lower end of push rod 4 is stretched into support 1 through the lower centre bore of cylinder cap 8, upper end between push rod 4 and piston 9
Upper cylinder cover 14 is stretched out through the axle sleeve in the centre bore of upper cylinder cover 14, it is O-shaped that sealing ring is provided between axle sleeve and the centre bore of upper cylinder cover 14
I 17 and O-ring III 19 are enclosed, sealing ring O-ring II 18 is provided between axle sleeve and push rod 4, the middle part of push rod 4 is located on upper cylinder cover 14
Face opening position is fixed with circlip for shaft 16, and the lower end of push rod 4 is provided with valve rod adapter sleeve 2 and valve rod attaching nut 3, valve rod connection
Nut 3 is provided with pointer, and support 1 is provided with scale 69 with pointer corresponding position, and the upper end of push rod 4 is provided with hydraulic stem adapter sleeve 68 and liquid
Depression bar attaching nut 67, cylinder modules also include guiding mechanism and buffer gear, the centre bore both sides pair of the piston 9 of cylinder modules
Title is provided with two pilot holes, and the excircle of piston 9 is provided with a circle groove, and the pilot hole inner periphery of piston 9 is provided with a circle groove；Gas
The lower cylinder cap 8 of cylinder module is above and two pilot hole correspondence positions on piston 9 are provided with cylindrical hole, on upper cylinder cover 14 with piston 9
Two pilot hole correspondence positions be provided with two circular holes；Guiding mechanism includes guide rod and guidance tape, two guide rods 10 with piston 9
Two symmetrical pilot holes are engaged, and two lower ends of guide rod 10 are each passed through two pilot holes on piston 9, are fixed on lower cylinder cap 8
Cylindrical hole in, two circular holes that upper end is each passed through on upper cylinder cover 14 are fixed on upper cylinder cover 14, guide rod 10 and upper cylinder cover 14
Sealing ring O-ring V 21 is provided between upper cylindrical hole；Guidance tape includes outer guidance tape 24 and interior guidance tape 23, and outer guidance tape 24 is
The soft ribbons being arranged in the outer circumferential groove of piston 9, interior guidance tape 23 are provided in the pilot hole inner periphery fovea superior of piston 9
Soft ribbons in groove, guidance tape are rubber strip or engineering plastics band；Buffer gear includes buffer stopper 7 and retainer ring 6, and buffer stopper 7 is
One circle set, buffer stopper 7 are enclosed on push rod 4, are fixed on below piston center hole, and retainer ring 6 is fixedly mounted on the slow of push rod 4
Rush the lower edge of block 7, the centre bore of cylinder cap 8 is shoulder hole under cylinder modules, and below lower cylinder cap 8 is single order hole, single order hole
Built with the axle sleeve 5 being engaged with single order hole, above lower cylinder cap 8 is second order hole, and second order hole is engaged with buffer stopper 7；
Spring cylinder module includes spring cylinder 32, baffle ring gland 33, spring baffle ring 34, spring base 35, interior spring 36, the and of outer spring 37
Spring end cap 38, spring cylinder 32 are tubbiness cylinders, and centre bore, the centre bore of spring cylinder 32 and push rod are provided with the bottom center of spring cylinder 32
The external diameter of circlip for shaft 16 at 4 middle parts is engaged, and the inwall bottom of spring cylinder 32 is provided with ring groove, and baffle ring gland 33 is and bullet
The lid that the internal diameter of spring cylinder 32 is engaged, centre bore, the centre bore of baffle ring gland 33 and the middle part of push rod 4 are provided with the center of baffle ring gland 33
The external diameter of circlip for shaft 16 is engaged, and spring baffle ring 34 is annulus, and the peripheral edge portion of spring baffle ring 34 is arranged on the bottom of spring cylinder 32
In portion's ring groove, the inner margin portion of the spring baffle ring 34 protrusion inwall of spring cylinder 32, spring base 35 is drum type seat, outside spring base 35
Footpath is engaged with the internal diameter of spring cylinder 32, and centre bore is provided with the center of spring base 35, and the centre bore of spring base 35 matches with the external diameter of push rod 4
Close, baffle ring gland 33, spring baffle ring 34 and spring base 35 are sequentially arranged at the bottom of spring cylinder 32, and interior spring 36 is sleeved on outer spring 37
Interior, interior spring 36 and outer spring 37 are placed on the spring base 35 in spring cylinder 32, and the center of spring end cap 38 is provided with centre bore, spring terminal
Lid 38 be fixed on spring cylinder 32 it is suitable for reading on, by interior spring 36 and outer spring pressing, the upper cylinder cover 14 of the bottom surface of spring cylinder 32 and cylinder modules
It is fixedly connected, sealing ring O-ring VII 39 is provided between the bottom surface of spring cylinder 32 and upper cylinder cover 14, the upper end of push rod 4 of cylinder modules is worn
Cross the bottom center hole of spring cylinder 32 to stretch into spring cylinder 32, the circlip for shaft 16 at the middle part of push rod 4 passes through the bottom surface of spring cylinder 32
Centre bore and the centre bore of baffle ring gland 33 are placed in below the centre bore of spring base 35；
Hydraulic cylinder module includes hydraulic cylinder 43, oil pipeline 46, hydraulic oil pump 47 and hydraulic manual stop valve 48, hydraulic oil
The inlet and outlet of pump 47 are connected respectively to the epicoele of hydraulic cylinder 43 and the end interface of cavity of resorption, hydraulic manual cut-off by oil pipeline 46
The inlet and outlet of valve 48 are connected respectively to the epicoele of hydraulic cylinder 43 and the end interface of cavity of resorption by oil pipeline 46, and hydraulic cylinder 43 fixes peace
On the spring end cap 38 of spring cylinder module, the hydraulic stem of hydraulic cylinder 43 is stretched into spring cylinder 32, on hydraulic stem and push rod (4)
End is fixedly connected by hydraulic stem attaching nut, and hydraulic oil pump 47 is connected with hydraulic oil source；
Gas control module is the pneumatic control system of cylinder modules, and the gas control module includes machine control two-position three-way valve 50, normally-off
Two-bit triplet Pneumatic valve 51, Pneumatic reversal valve 52, normally-off 2/2-way Pneumatic valve I 53, rapid escape valve 54, pressure gauge I 55,
Filtering pressure reducing valve 56, compressed gas source 57, two-bit triplet magnetic valve 58, plug I 59, normally-off 2/2-way Pneumatic valve II 60, often
Open form 2/2-way Pneumatic valve 61, plug II 62, pressure gauge II 63, air-controlled manual stop valve 64 and controller 65, compressed gas source
57 are connected by pipeline with the piston cavity of resorption of cylinder modules, in the pipe that compressed gas source 57 connects with the cavity of resorption of piston 9 of cylinder modules
Filtering pressure reducing valve 56, pressure gauge I 55, rapid escape valve 54 and normally-off 2/2-way Pneumatic valve I 53 are sequentially connected in series on road, is compressed
On the pipeline that source of the gas 57 connects with the piston cavity of resorption of cylinder modules and connect the piston of a branch line, branch line and cylinder modules
Epicoele is connected, and air-controlled manual stop valve 64 and pressure gauge II 63 are serially connected with branch line, in air-controlled manual stop valve 64 and pressure
On pipeline section between power table II 63 and a hand stop valve pipeline is connect, hand stop valve pipeline plug II 62 blocks, in gas control
To be gone back on pipeline section between hand stop valve 64 and pressure gauge II 63 and be connected to control valve loop, control valve loop is divided into two tunnels, the
Commutated all the way with the UNICOM of normally-off 2/2-way Pneumatic valve II 60, control terminal and the gas control of normally-off 2/2-way Pneumatic valve II 60
One orifice of valve 52, while connected with the control terminal of Pneumatic reversal valve 52, second tunnel in control valve loop and open type
2/2-way Pneumatic valve 61 connects, and 61 another interface of open type 2/2-way Pneumatic valve connects with normally-off two-bit triplet Pneumatic valve 51
It is logical, the control terminal of normally-off two-bit triplet Pneumatic valve 51 and second orifice of Pneumatic reversal valve 52, open type two two
The control terminal and the 3rd orifice of Pneumatic reversal valve 52 of logical Pneumatic valve 61, the control of normally-off 2/2-way Pneumatic valve I 53
End and 58 1 orifices of two-bit triplet magnetic valve, another interface of two-bit triplet magnetic valve 58 is with pressure gauge I 55 and soon
Pipeline section connection between fast air bleeding valve 54, the control terminal of two-bit triplet magnetic valve 58 are connected with controller 65, machine control two-bit triplet
Valve 50 be arranged on at the outer rim touching of valve rod attaching nut 3 of the lower end of cylinder modules push rod 4, during positioned at controlled 8% aperture of valve
The location of valve rod attaching nut 3, compressed gas source 57 is at controlled valve scene.
The operation method of high-effect cut-out type single-acting pneumatic actuator, including controlled valve opening and controlled valve close
Close, controlled valve open method is as follows：The hydraulic manual stop valve 48 of hydraulic cylinder module is opened, starts hydraulic oil pump 47, manually
Air-controlled manual stop valve 64 is closed, compressed gas source 57 is opened manually, it is electric that controller 65 controls two-bit triplet magnetic valve 58 to obtain, compression
Gas enters the piston cavity of resorption of cylinder modules, the piston upper chamber compressed gas discharge of cylinder modules, and piston 9 moves upwards, and push rod 4 drives
Controlled valve rod moves upwards, the spring-compressed of spring cylinder module, valve opening；Controlled valve, which is closed, includes two processes：
Controlled valve is closed to the process of 8% aperture and controlled valve from 100% aperture and closed from 8% aperture to the process of contract fully, controlled
It is as follows that valve from 100% aperture closes process approach to 8% aperture：The state of hydraulic cylinder module is kept, it is artificial to close gas control hand
Dynamic stop valve 64, controller 65 control the dead electricity of two-bit triplet magnetic valve 58, piston upper chamber and the cavity of resorption conducting of cylinder modules, in bullet
Piston moves downward in the presence of the compression spring force of spring cylinder module, and push rod 4 drives controlled valve rod to move downwardly to machine control
Two-position three-way valve 50 and the controlled outer rim of valve rod attaching nut 3 of the lower end of push rod 4 are touched, and valve is closed to 8% aperture；It is described by
Control valve is closed to contract fully process from 8% aperture：The state of hydraulic cylinder module is kept, keeps air-controlled manual stop valve 64 to close
With the power failure state of two-bit triplet magnetic valve 58, the outer rim of valve rod attaching nut 3 in machine control two-position three-way valve 50 with the lower end of push rod 4 is touched
After touching, piston moves downward under the collective effect of spring force and cylinder force, is completely closed to valve.
Claims (4)
1. high-effect cut-out type single-acting pneumatic actuator, including cylinder modules, spring cylinder module and gas control module, cylinder mould
Block includes cylinder, support (1) and push rod (4), and cylinder includes piston (9), cylinder barrel (13), upper cylinder cover (14) and lower cylinder cap (8), branch
Frame is fixed on the lower cylinder cap (8) of cylinder modules, and push rod (4) lower end passes through piston (9) centre bore, the middle part of push rod (4) and work
Plug (9) is fixedly connected, and push rod (4) lower end is stretched into support (1) through lower cylinder cap (8) centre bore, and upper end passes through upper cylinder cover (14)
Centre bore stretches out upper cylinder cover (14), is fixed with circlip for shaft at upper cylinder cover (14) upper position in the middle part of push rod (4)
(16), push rod (4) lower end is provided with valve rod adapter sleeve (2) and valve rod attaching nut (3), and valve rod attaching nut (3) is provided with pointer,
Scale (69) is provided with pointer corresponding position on support (1), push rod (4) upper end connects provided with hydraulic stem adapter sleeve (68) with hydraulic stem
Nut (67), it is characterised in that：The high-effect cut-out type single-acting pneumatic actuator also includes hydraulic cylinder module, the gas
Cylinder module also includes guiding mechanism and buffer gear, and the centre bore both sides of the piston (9) of the cylinder modules are arranged with two and led
Xiang Kong, piston (9) excircle are provided with a circle groove, and the pilot hole inner periphery of piston (9) is provided with a circle groove；The cylinder
The lower cylinder cap (8) of module is provided with cylindrical hole with two pilot hole correspondence positions on piston (9) above, on upper cylinder cover (14) and piston
(9) two pilot hole correspondence positions on are provided with two circular holes；The guiding mechanism includes guide rod and guidance tape, two guide rods
(10) it is engaged with two symmetrical pilot holes on piston (9), what two guide rod (10) lower ends were each passed through on piston (9) two leads
Xiang Kong, it is fixed in the cylindrical hole of lower cylinder cap (8), two circular holes that upper end is each passed through on upper cylinder cover (14) are fixed on upper cylinder cover
(14) on；The guidance tape includes outer guidance tape (24) and interior guidance tape (23), and outer guidance tape (24) is provided in piston (9) outside
Soft ribbons in circumferential groove, interior guidance tape (23) are provided in the soft ribbons in piston (9) pilot hole inner periphery upper groove；It is described slow
Punch mechanism includes buffer stopper (7) and retainer ring (6), and buffer stopper (7) is a circle set, and buffer stopper (7) is enclosed on push rod (4), fixed
On below the piston center hole, retainer ring (6) is fixedly mounted on buffer stopper (7) lower edge of push rod (4), the cylinder modules
The centre bore of lower cylinder cap (8) is shoulder hole, close to lower cylinder cap (8) below be single order hole, single order hole built with single order hole phase
The axle sleeve (5) of cooperation, close to lower cylinder cap (8) above be second order hole, second order hole is engaged with buffer stopper (7)；
The spring cylinder module includes spring cylinder (32), baffle ring gland (33), spring baffle ring (34), spring base (35), interior spring
(36), outer spring (37) and spring end cap (38), spring cylinder (32) are tubbiness cylinders, and center is provided with spring cylinder (32) bottom center
Hole, spring cylinder (32) centre bore are engaged with circlip for shaft (16) external diameter in the middle part of push rod (4), spring cylinder (32) inwall bottom
Portion is provided with ring groove, and baffle ring gland (33) is the lid being engaged with spring cylinder (32) internal diameter, is set at baffle ring gland (33) center
There is centre bore, baffle ring gland (33) centre bore is engaged with circlip for shaft (16) external diameter in the middle part of push rod (4), spring baffle ring
(34) it is annulus, spring baffle ring (34) peripheral edge portion is arranged in the ring groove of spring cylinder (32) bottom, in spring baffle ring (34)
Edge point protrusion spring cylinder (32) inwall, spring base (35) are drum type seat, spring base (35) external diameter and spring cylinder (32) internal diameter
It is engaged, centre bore is provided with spring base (35) center, spring base (35) centre bore is engaged with push rod (4) external diameter, baffle ring pressure
Lid (33), spring baffle ring (34) and spring base (35) are sequentially arranged at spring cylinder (32) bottom, and interior spring (36) is sleeved on outer spring
(37) in, interior spring (36) and outer spring (37) are placed on the spring base (35) in spring cylinder (32), and the center of spring end cap (38) is set
Have a centre bore, spring end cap (38) be fixed on spring cylinder (32) it is suitable for reading on, by interior spring (36) and outer spring pressing, spring cylinder (32) bottom
Face is fixedly connected with the upper cylinder cover (14) of cylinder modules, and push rod (4) upper end of cylinder modules passes through spring cylinder (32) bottom center
Hole is stretched into spring cylinder (32), and the circlip for shaft (16) in the middle part of push rod (4) passes through spring cylinder (32) bottom center hole and gear
Ring gland (33) centre bore is placed in below spring base (35) centre bore；
The hydraulic cylinder module includes hydraulic cylinder (43), oil pipeline (46), hydraulic oil pump (47) and hydraulic manual stop valve
(48), the inlet and outlet of hydraulic oil pump (47) are connected respectively to the epicoele of hydraulic cylinder (43) and the end of cavity of resorption by oil pipeline (46)
Interface, hydraulic manual stop valve (48) inlet and outlet are connected respectively to the epicoele and cavity of resorption of hydraulic cylinder (43) by oil pipeline (46)
End interface, hydraulic cylinder (43) is fixedly mounted on the spring end cap (38) of spring cylinder module, and the hydraulic stem of hydraulic cylinder (43) is stretched
Enter in spring cylinder (32), be fixedly connected with push rod (4) upper end, hydraulic oil pump (47) is connected with hydraulic oil source；
The gas control module is the pneumatic control system of cylinder modules, and the gas control module includes machine control two-position three-way valve (50), Chang Guan
Type two-bit triplet Pneumatic valve (51), Pneumatic reversal valve (52), normally-off 2/2-way Pneumatic valve I (53), rapid escape valve (54),
Pressure gauge I (55), filtering pressure reducing valve (56), compressed gas source (57), two-bit triplet magnetic valve (58), plug I (59), normally-off two
The logical Pneumatic valve II (60) in position two, open type 2/2-way Pneumatic valve (61), plug II (62), pressure gauge II (63), gas control are manual
Stop valve (64) and controller (65), compressed gas source (57) is connected by pipeline with the piston cavity of resorption of cylinder modules, in compressed gas
Be sequentially connected in series on the pipeline that source (57) connects with piston (9) cavity of resorption of cylinder modules filtering pressure reducing valve (56), pressure gauge I (55),
Rapid escape valve (54) and normally-off 2/2-way Pneumatic valve I (53), the piston cavity of resorption of compressed gas source (57) and cylinder modules connect
On logical pipeline and a branch line is connect, branch line is connected with the piston upper chamber of cylinder modules, and gas is serially connected with branch line
Hand stop valve (64) and pressure gauge II (63) is controlled, on the pipeline section between air-controlled manual stop valve (64) and pressure gauge II (63)
And a hand stop valve pipeline is connect, hand stop valve pipeline is blocked with plug II (62), in air-controlled manual stop valve (64) and pressure
Gone back on pipeline section between power table II (63) and be connected to control valve loop, control valve loop is divided into two tunnels, the first via and normally-off two
Logical Pneumatic valve II (60) UNICOM in position two, the control terminal of normally-off 2/2-way Pneumatic valve II (60) and the one of Pneumatic reversal valve (52)
Individual orifice, while connected with the control terminal of Pneumatic reversal valve (52), the second tunnel and the open type two two in control valve loop
Logical Pneumatic valve (61) connection, open type 2/2-way Pneumatic valve (61) another interface connect with normally-off two-bit triplet Pneumatic valve (51)
It is logical, the control terminal of normally-off two-bit triplet Pneumatic valve (51) and second orifice of Pneumatic reversal valve (52), open type two
The control terminal and the 3rd orifice of Pneumatic reversal valve (52) of the logical Pneumatic valve (61) in position two, normally-off 2/2-way Pneumatic valve I
(53) control terminal and (58) orifices of two-bit triplet magnetic valve, another interface of two-bit triplet magnetic valve (58) with
Pipeline section connection between pressure gauge I (55) and rapid escape valve (54), the control terminal and controller of two-bit triplet magnetic valve (58)
(65) it is connected, machine control two-position three-way valve (50) is arranged on to be touched with valve rod attaching nut (3) outer rim of cylinder modules push rod (4) lower end
Place is touched, the location of valve rod attaching nut (3), compressed gas source (57) show in controlled valve during positioned at controlled 8% aperture of valve
.
2. high-effect cut-out type single-acting pneumatic actuator as claimed in claim 1, it is characterised in that：The hydraulic stem is with pushing away
Bar (4) is fixedly connected by hydraulic stem attaching nut.
3. high-effect cut-out type single-acting pneumatic actuator as claimed in claim 1, it is characterised in that：The guidance tape is rubber
Adhesive tape or engineering plastics band.
4. the operation method of high-effect cut-out type single-acting pneumatic actuator described in claim 1, including controlled valve opening
Closed with controlled valve, it is characterised in that：The controlled valve open method is as follows：The hydraulic manual for opening hydraulic cylinder module is cut
Only valve (48), start hydraulic oil pump (47), manually close air-controlled manual stop valve (64), compressed gas source (57) is opened manually, control
It is electric that device (65) processed controls two-bit triplet magnetic valve (58) to obtain, and compressed gas enters the piston cavity of resorption of cylinder modules, the work of cylinder modules
Chamber compressed gas is discharged beyond the Great Wall, and piston (9) moves upwards, and push rod (4) drives controlled valve rod to move upwards, spring cylinder module
Spring-compressed, valve opening；The controlled valve, which is closed, includes two processes：Controlled valve is closed to 8% aperture from 100% aperture
Process and controlled valve close to the process of contract fully, the controlled valve from 8% aperture and closed from 100% aperture to 8% aperture
Process approach it is as follows：The state of hydraulic cylinder module is kept, manually closes air-controlled manual stop valve (64), controller (65) control
Two-bit triplet magnetic valve (58) dead electricity, piston upper chamber and the cavity of resorption conducting of cylinder modules, in the compression spring force of spring cylinder module
In the presence of piston move downward, push rod (4) drives controlled valve rod to move downwardly to machine control two-position three-way valve (50) with pushing away
Controlled valve rod attaching nut (3) the outer rim touching of bar (4) lower end, valve are closed to 8% aperture；The controlled valve is from 8%
Aperture is closed to contract fully process：The state of hydraulic cylinder module is kept, keeps air-controlled manual stop valve (64) to close and two three
Three-way electromagnetic valve (58) power failure state, valve rod attaching nut (3) outer rim in machine control two-position three-way valve (50) with push rod (4) lower end are touched
After touching, piston moves downward under the collective effect of spring force and cylinder force, is completely closed to valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711319414.0A CN107842642B (en) | 2017-12-12 | 2017-12-12 | High-efficiency cut-off type single-action pneumatic actuating mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711319414.0A CN107842642B (en) | 2017-12-12 | 2017-12-12 | High-efficiency cut-off type single-action pneumatic actuating mechanism |
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| CN107842642B CN107842642B (en) | 2024-04-02 |
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| CN201711319414.0A Active CN107842642B (en) | 2017-12-12 | 2017-12-12 | High-efficiency cut-off type single-action pneumatic actuating mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108868923A (en) * | 2018-07-05 | 2018-11-23 | 大连亨利测控仪表工程有限公司 | A kind of threeway jet stream pressure and temperature reducing control system for heat supply network heat supply |
| CN112224452A (en) * | 2020-10-20 | 2021-01-15 | 北京卫星环境工程研究所 | Multiplexing type millisecond-level rapid pressure relief vacuum mechanism and rapid pressure relief test system |
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| CN112224452A (en) * | 2020-10-20 | 2021-01-15 | 北京卫星环境工程研究所 | Multiplexing type millisecond-level rapid pressure relief vacuum mechanism and rapid pressure relief test system |
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| Publication number | Publication date |
|---|---|
| CN107842642B (en) | 2024-04-02 |
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