CN202545963U - Actuating mechanism for pneumatic valve - Google Patents
Actuating mechanism for pneumatic valve Download PDFInfo
- Publication number
- CN202545963U CN202545963U CN2012200502038U CN201220050203U CN202545963U CN 202545963 U CN202545963 U CN 202545963U CN 2012200502038 U CN2012200502038 U CN 2012200502038U CN 201220050203 U CN201220050203 U CN 201220050203U CN 202545963 U CN202545963 U CN 202545963U
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- China
- Prior art keywords
- piston
- valve
- air cavity
- cylinder
- actuator
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- Expired - Fee Related
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- Actuator (AREA)
Abstract
The utility model relates to an actuating mechanism for a pneumatic valve, which comprises an air cylinder, pistons, piston rods and a driving shaft of the actuated valve, the pistons are connected with the piston rods, the piston rods are provided with racks, the driving shaft of the actuated valve is provided with a gear, and is engaged with the racks of the piston rods through the gear, air chambers in the air cylinder, which are partitioned by the pistons, are respectively provided with an air chamber hole, and the air chamber holes are connected with a reversing valve. The actuating mechanism can effectively convert the linear motion of the pistons into the rotation of the driving shaft, is compact, can be reversibly operated in the field, can meet the torques of most of standard conditions, and has waterproof, dustproof and explosion-proof effects.
Description
Technical field
The utility model relates to a kind of pneumatic valve actuator that is mainly used in the rock gas station.
Background technique
Each rock gas station is adopted each valve of conventional electric-powered actuating mechanism controls equipment mostly at present; In case lose electric power in the production process temporarily; Control apparatus runs out of steam, and dangerous situation might occur, so electric actuator does not meet the strict requirement of explosion proof in rock gas station; And electric power is carried the electric transmission line that needs to rely on long distance; Single power supply facilities construction aspect with regard to the rock gas station just needs with a large amount of funds and engineering time, and as far as remote station or output rock gas station less than normal, the power supply facilities cost of possession is too high especially.
Summary of the invention
The purpose of the utility model provides a kind of pneumatic valve actuator, and electric actuator has been modified to pneumatic actuator, evades meeting with the interference that the power supply aspect is brought in the construction of rock gas station.
This pneumatic valve actuator comprises cylinder, piston, piston rod and is performed the live axle of valve; Piston is connected with piston rod; Said piston rod is provided with tooth bar, and the live axle that is performed valve is provided with gear, is meshed with the piston rod tooth bar through gear; The air cavity that is separated into by piston in the said cylinder is respectively equipped with the air cavity hole, and said air cavity hole is connected with a selector valve.
Be provided with two pistons in the said cylinder, two-piston lays respectively at the both sides of live axle, is divided into three air cavitys by two-piston in the cylinder, and the air cavity hole that is positioned at two air cavitys in the two-piston outside communicates with gas circuit.
The said live axle that is performed valve is provided with and radially keeps off tongue, and cylinder outer wall is provided with corresponding with it positive stop.
The said live axle that is performed valve is provided with manual turning handle.
The utility model actuator is that power moves piston with the pressurized gas in cylinder, utilizes the engagement driving of piston rod rack and pinion, drives the live axle that is performed valve and rotates to an angle, thereby realize the open and close control to valve.Utilize the flow direction of selector valve conversion pressed gas and change the piston movement direction, to select the sense of rotation of live axle, to being performed the operating process that the valve correct execution opens or closes.This actuator replaces prior electric actuator; Pressure gas source not only can use the pressurized air through compressor boost, and the pipeline rock gas of field, gas well also capable of using station has reduced equipment cost and reached the dependence to electric energy; Rock gas can recycling, reduces environmental pollution.High-energy battery is as auxiliary power source, and the switching power consumption of selector valve is very low, can use high-energy battery to be auxiliary power source.In sum, this actuator can be effectively converts the straight line motion of piston into live axle rotatablely move, and mechanism is compact, but can carry out inverse operation in the scene, and can satisfy the torque of most standard operating mode, the waterproof and dustproof that possesses, and explosion-proof effect.
Description of drawings
Fig. 1 is the structural representation that contains the pneumatic valve actuator of dual piston cylinder.
Fig. 2 is the plan structure figure of Fig. 1.
Fig. 3 is the structural representation that contains the pneumatic valve actuator of single piston-cylinder.
Among the figure, B, B ', C-air cavity; 1-retaining tongue, 2-tooth bar, 3,3 '-piston, 4,4 '-piston rod, 5-1-B air cavity hole; 5-2-B ' air cavity hole, the external gas lumen pore of 5-air cavity B, B ', 6-C chamber pore, 7-gas path pipe, 8-live axle; 9-gear, 10-cylinder, 11-selector valve, 12-positive stop.
Embodiment
Structure and working principle below in conjunction with this actuator of description of drawings.
Like Fig. 1, be provided with two pistons 3 and 3 ' in the cylinder 10, the two is connected with piston rod 4 and 4 ' respectively, and piston rod 4 is provided with tooth bar, and the live axle 8 that is performed valve is provided with gear 9, and gear 9 is meshed with piston rod 4 tooth bars; Be separated into air cavity B, air cavity C and air cavity B ' by piston 3 in the cylinder 10, air cavity B is provided with air cavity hole 5-1, and air cavity B ' is provided with air cavity hole 5-2, and 5-1 gentle lumen pore 5-2 in air cavity hole communicates with external gas lumen pore 5 together through gas path pipe 7; Air cavity C is provided with air cavity hole 6, can be directly as external hole.Air cavity hole 5 gentle lumen pores 6 are connected with selector valve 11.Like Fig. 1, two switched the position about the Placement in selector valve 11 and air cavity hole 5, air cavity hole 6 had, and in Fig. 1 state, the right position of selector valve 11 is the cut-in operation position.Like Fig. 1; Through selector valve 11,, get into air cavity C from the pressed gas of gas pressure source (can through throttling) through air cavity hole 6; Air pressure among the air cavity C increases, piston 3 (together with piston rod 4) and piston 3 ' (together with piston rod 4 ') because of stressedly distinguish left, right-hand to mobile; 5-1, air cavity hole 5-2 discharge gas in air cavity B and the air cavity B ' through the air cavity hole respectively, converge in external air cavity hole 5 through gas path pipe 7, discharge this actuator through selector valve 11 at last.Meanwhile; Live axle 8 rotates because of the gear 9 and the tooth bar engagement driving of piston rod 4; When rotating to when radially keeping off tongue 1 and colliding with positive stop 12 (see figure 2)s, live axle 8 stops the rotation (valve of live axle 8 lower ends is unlocked), accomplishes an implementation to valve opening.When the needs throttle down, switch selector valve 11, its position, left side is connected with air cavity hole 5 gentle lumen pores 6, air-flow charges in air cavity B and the air cavity B ', and two-piston all moves to air cavity C direction, and air cavity C gas is from air cavity hole 6, through selector valve 11 discharges; Simultaneously, live axle 8 produces and above-mentioned reverse rotation, collides with another positive stop 12 of Fig. 2 up to radially keeping off tongue 1, promptly closes the valve process and is finished.
Fig. 3 is the embodiment of actuator who contains single piston, and cylinder 10 contains two air cavitys, and compression or the expansion of air-flow in each air cavity accomplished by a piston 3, and working principle is identical with Fig. 1.
The driving moment that this actuator produces under the source of the gas of different pressures grade drives is different, for reaching the valve of the different moments of torsion of control under the condition of a certain fixed gas source, reaches the requirement of control through the adjustment cylinder size.When air flow system breaks down, available manual turning handle operation.
Claims (4)
1. pneumatic valve actuator; The live axle that it is characterized in that comprising cylinder, piston, piston rod and be performed valve, piston is connected with piston rod, and said piston rod is provided with tooth bar; The live axle that is performed valve is provided with gear; Be meshed with the piston rod tooth bar through gear, the air cavity that is separated into by piston in the said cylinder is respectively equipped with the air cavity hole, and said air cavity hole is connected with a selector valve.
2. pneumatic valve according to claim 1 actuator; It is characterized in that being provided with in the said cylinder two pistons; Two-piston lays respectively at the both sides of the live axle that is performed valve, is divided into three air cavitys by two-piston in the cylinder, and the air cavity hole that is positioned at two air cavitys in the two-piston outside communicates with gas circuit.
3. pneumatic valve according to claim 1 and 2 actuator is characterized in that the said live axle that is performed valve is provided with radially to keep off tongue that cylinder outer wall is provided with corresponding with it positive stop.
4. pneumatic valve according to claim 3 actuator is characterized in that the said live axle that is performed valve is provided with manual turning handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200502038U CN202545963U (en) | 2012-02-16 | 2012-02-16 | Actuating mechanism for pneumatic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200502038U CN202545963U (en) | 2012-02-16 | 2012-02-16 | Actuating mechanism for pneumatic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202545963U true CN202545963U (en) | 2012-11-21 |
Family
ID=47166601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200502038U Expired - Fee Related CN202545963U (en) | 2012-02-16 | 2012-02-16 | Actuating mechanism for pneumatic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202545963U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568423A (en) * | 2015-02-03 | 2015-04-29 | 深圳中核二三核电检修有限公司 | Two-position five-way valve detection device for hydrogen production unit |
| CN104747526A (en) * | 2015-04-17 | 2015-07-01 | 天津华宁电子有限公司 | Mining manual reversing valve control device |
-
2012
- 2012-02-16 CN CN2012200502038U patent/CN202545963U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568423A (en) * | 2015-02-03 | 2015-04-29 | 深圳中核二三核电检修有限公司 | Two-position five-way valve detection device for hydrogen production unit |
| CN104747526A (en) * | 2015-04-17 | 2015-07-01 | 天津华宁电子有限公司 | Mining manual reversing valve control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: SICHUAN ZHONGKEDA OIL&GAS NEW TECHNOLOGY CO., LTD. Assignor: Chendu Keda Automation Control Engineering Co., Ltd. Contract record no.: 2014510000064 Denomination of utility model: Redundancy gas supply system for pneumatic valve execution mechanism Granted publication date: 20121121 License type: Exclusive License Record date: 20140612 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20160216 |