CN203604765U - Valve locator - Google Patents
Valve locator Download PDFInfo
- Publication number
- CN203604765U CN203604765U CN201320847311.2U CN201320847311U CN203604765U CN 203604765 U CN203604765 U CN 203604765U CN 201320847311 U CN201320847311 U CN 201320847311U CN 203604765 U CN203604765 U CN 203604765U
- Authority
- CN
- China
- Prior art keywords
- valve
- reed
- potentiometer
- pilot valve
- diaphragm 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.)
- Expired - Fee Related
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- Fluid-Driven Valves (AREA)
Abstract
The utility model discloses a valve locator which comprises a shell body, a feedback mechanism, a signal input mechanism and a pneumatic actuator. The feedback mechanism, the signal input mechanism and the pneumatic actuator are arranged in the shell body. The feedback mechanism comprises a feedback shaft, a cam disc and a lever. The signal input mechanism comprises a potentiometer and a coil shell body. A coil is connected with the potentiometer and a spring piece a which is connected with a balance rod. The pneumatic actuator comprises a guiding valve and a coupler. The spring piece b is connected with a diaphragm piston. The balance rod is connected with the diaphragm piston through a spring. The diaphragm piston is connected with a spring piece c which is connected with the guiding valve. Through moment balance and electric signals input by the potentiometer, the rotating range of the coil is controlled, meanwhile, coil rotating can directly drive the spring piece a to deform, accordingly, the balance rod deviates upwards, the spring piece c and the diaphragm piston of a sliding valve are further driven to move through the spring, and control over air going in and out in the coupler is achieved.
Description
Technical field
The utility model relates to the valve positioner of precisely controlling for industrial automation, is specifically related to a kind of pneumatic positioner valve.
Background technique
Valve positioner is the main accessories of modulating valve, conventionally and pneumatic control valve support the use, it accepts the output signal of regulator, then removes to control pneumatic control valve with its output signal, when after modulating valve action, the displacement of valve rod feeds back to valve positioner by mechanical device again.Valve positioner can increase the output power of modulating valve, the situation that reduces the transfer lag of regulated signal occurs, and accelerates the travelling speed of valve rod, can improve the linearity of valve, overcome the frictional force of valve rod and eliminate the impact of unbalanced force, thereby guarantee the correct location of modulating valve.Valve positioner is the main accessories of control valve. its feedback measurement signal using displacement of valve rod signal as input, using controller output signal as setting signal, compare, in the time that both have deviation, change its output signal to actuator, make actuator's action, set up the one-to-one relationship of displacement of valve rod doubly and between controller output signal.Therefore, valve positioner forms take displacement of valve rod as measurement signal, is output as the feedback control system of setting signal with controller.The manipulated variable of this control system is the output signal that valve positioner goes to actuator.
Valve positioner is divided into pneumatic positioner valve, electropneumatic valve positioner and intelligent valve positioner by input signal.Compared with electropneumatic valve positioner, pneumatic positioner valve has easy to maintenance, and error is little, validity advantages of higher.
Existing pneumatic valve control accuracy is poor, lacks signal feed back, can not adjust effectively accurately the open and-shut mode of valve.Meanwhile, existing valve positioner less stable, can not adapt to severe working environment.
In order to solve above-mentioned deficiency of the prior art, the utility model proposes a kind of new solution.
Model utility content
It is extensive that the purpose of this utility model is to provide a kind of applicability, can adapt to severe working environment, has the valve positioner of accurate control.
For reaching above-mentioned purpose, the technological scheme that the utility model adopts is: a kind of valve positioner is provided, comprises housing, be arranged on feedback mechanism, signal input mechanism and the pneumatic actuator of enclosure interior; The lever that feedback mechanism comprises resetting shaft, be fixed on cam disk on resetting shaft, be slidably connected with cam disk and the angle transducer of measuring resetting shaft rotation angle;
Signal input mechanism comprises input circlult, electric signal processor, compensating circuit, potentiometer and solenoid housing; The electrical signal of electric signal processor receiving angle sensor, input circlult and compensating circuit; Compensating circuit is connected with potentiometer with input circlult; Solenoid housing inside is provided with coil and magnet, and solenoid housing is provided with nozzle; Coil is connected with potentiometer, and is connected with a side that is arranged on the reed a on nozzle; The opposite side of reed a is connected with one end of balancing pole; Between described lever and balancing pole, connect by spring; The Coupler that pneumatic actuator comprises pilot valve and is connected with pilot valve; In housing, be fixed with reed b, reed b is connected with diaphragm piston; Balancing pole is connected with diaphragm piston by spring; On diaphragm piston, be connected with reed c, the other end of reed c is connected with pilot valve.
Preferably, balancing pole is provided with some attachment holes.
Preferably, pilot valve comprises valve body, pilot valve valve plug, liner and converting member.
Preferably, be connected with debugging part in diaphragm piston, debugging part is provided with adjusts bolt and zeroing wheel.
In sum, the utlity model has following advantage:
1, the utility model passes through equalising torque, the electrical signal of inputting by potentiometer, the rotation amplitude of control coil, the rotation of coil simultaneously will directly be with movable contact spring a that deformation occurs, thereby balancing pole is upwards offset, further move by spring band movable contact spring c and diaphragm piston, realize air inlet in pilot valve and Coupler and the control of giving vent to anger;
2, the rotating shaft of Coupler is connected with resetting shaft, signal is fed back in positioning work piece by cam disk, and then drive its corresponding reed to change, and realizes reverse feedback, makes the degree of control of positioning work piece more accurate;
3, positioning work piece inside is realized and being connected with spring by reed, and this mechanical connection manner can be avoided the interference of electromagnetic signal in environment, is subject to the impact of working environment little.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Wherein, 1, cam disk; 2, lever; 3, potentiometer; 4, solenoid housing; 5, reed a; 6, reed b; 7, reed c; 8, balancing pole; 9, pilot valve; 10, diaphragm piston; 11, attachment hole; 12, debugging part; 13, adjust bolt; 14, zeroing wheel.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
As shown in Figure 1, the utility model provides a kind of valve positioner, comprises housing, is arranged on feedback mechanism, signal input mechanism and the pneumatic actuator of enclosure interior.Feedback mechanism comprises resetting shaft, is fixed on the cam disk 1 on resetting shaft, the lever 2 being slidably connected with cam disk 1 and be provided with the angle transducer of measuring resetting shaft rotation angle, and wherein resetting shaft enters enclosure interior through the through hole of housing.The Coupler that pneumatic actuator comprises pilot valve 9 and is connected with pilot valve, wherein Coupler is the pneumatic Coupler of commonly using, and its Coupler is provided with rotating shaft, and this rotating shaft is connected with resetting shaft; Wherein pilot valve 9 is conventional selector valve.
Signal input mechanism comprises input circlult, electric signal processor, compensating circuit, potentiometer 3 and solenoid housing 4, the electrical signal of electric signal processor receiving angle sensor, input circlult and compensating circuit; Compensating circuit is connected with potentiometer 3 with input circlult.Solenoid housing 4 inside are provided with coil and magnet, and coil surrounds magnet periphery.Solenoid housing 4 is provided with nozzle.Coil is connected with potentiometer 3, and potentiometer 3 receives the electrical signal of extraneous input, and by current delivery to coil.Coil is connected with a side that is arranged on the reed a5 on nozzle; The opposite side of reed a5 is connected with one end of balancing pole 8.Between lever 2 and balancing pole 8, connect by spring;
In housing, be fixed with reed b6, reed b6 is connected with diaphragm piston 10; Balancing pole 8 is connected with diaphragm piston 10 by spring; On diaphragm piston 10, be connected with reed c7, the other end of reed c7 is connected with pilot valve 9.
Extraneous electrical signal is inputted after potentiometer 3 by input circlult, will after signal conversion, be sent to coil, and coil electricity deflects in magnetic field, in deflection, by the reed a5 on contact nozzle, makes it occur to move on deformation band dynamic balancing bar 8.After moving on balancing pole 8, will drive spring, and make reed b6 that deformation occur, and then make the air release of diaphragm piston 10 inside, diaphragm piston 10 is with on movable contact spring c7 and is moved, and makes the pilot valve piston of the end extruding pilot valve 9 of reed c7.Pilot valve 9 is guiding valve selector valve, and pilot valve 9 comprises valve body, pilot valve valve plug, liner and converting member, and pilot valve piston is connected with reed c7.Pilot valve piston occurs in the position of pilot valve 9 inside, after deformation, will make the direction of flow of pilot valve 9 change, and then Coupler is acted accordingly, and allows Coupler band movable valve, and the switching value that realizes valve changes.
Rotatingshaft on Coupler is directly connected with resetting shaft, and the variable quantity that the rotatingshaft of Coupler occurs, will feed back on cam disk 1, and angle transducer is by the life electrical signal that has a certain degree simultaneously.Cam disk 1 will drive lever 2, and lever 2 drives balancing pole 8 to realize reverse feedback.Angle electrical signal transfer is to electric signal processor, and electric signal processor is accepted the electrical signal of angle transducer and input circlult simultaneously, and both signals are contrasted, and detects and whether has deviation, and realize control by the software that is stored in processor.When the signal of input circlult and the signal of angle transducer are when inconsistent, electric signal processor compensates the input electrical signal of potentiometer by compensating circuit, thereby eliminates error.In this programme, input circlult, angle transducer and electric signal processor all can be realized modularization, are arranged on enclosure interior.
Further, balancing pole 8 is provided with some attachment holes 11, and the spring tie point between balancing pole 8 and reed b6 can be adjusted according to actual needs, and then changes feedback quantity.In diaphragm piston 10, be connected with debugging part 12, debugging part 12 is provided with adjusts bolt 13 and zeroing wheel 14.Adjusting bolt 13, zeroing wheel 14 and attachment hole 11 can be match equipment, all can adjust debugging to the spring being connected between balancing pole 8 and reed b6.
Although by reference to the accompanying drawings embodiment of the present utility model is described in detail, should not be construed as the restriction of the protection domain to this patent.In the described scope of claims, the various modifications that those skilled in the art can make without creative work and distortion still belong to the protection domain of this patent.
Claims (4)
1. a valve positioner, is characterized in that: comprise housing, be arranged on feedback mechanism, signal input mechanism and the pneumatic actuator of enclosure interior;
The lever that described feedback mechanism comprises resetting shaft, be fixed on cam disk on resetting shaft, be slidably connected with cam disk and the angle transducer of measuring resetting shaft rotation angle;
Described signal input mechanism comprises input circlult, electric signal processor, compensating circuit, potentiometer and solenoid housing; The electrical signal of described electric signal processor receiving angle sensor, input circlult and compensating circuit; Compensating circuit is connected with potentiometer with input circlult; Solenoid housing inside is provided with coil and magnet, and solenoid housing is provided with nozzle; Coil is connected with potentiometer, and is connected with a side that is arranged on the reed a on nozzle; The opposite side of reed a is connected with one end of balancing pole; Between described lever and balancing pole, connect by spring;
The Coupler that described pneumatic actuator comprises pilot valve and is connected with pilot valve;
In described housing, be fixed with reed b, reed b is connected with diaphragm piston; Balancing pole is connected with diaphragm piston by spring; In diaphragm piston, be connected with reed c, the other end of reed c is connected with pilot valve.
2. valve positioner as claimed in claim 1, is characterized in that: described balancing pole is provided with some attachment holes.
3. valve positioner as claimed in claim 1, is characterized in that: described pilot valve comprises valve body, pilot valve valve plug, liner and converting member, and pilot valve piston is connected with reed c.
4. valve positioner as claimed in claim 1, is characterized in that: in described diaphragm piston, be connected with debugging part, debugging part is provided with adjusts bolt and zeroing wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320847311.2U CN203604765U (en) | 2013-12-21 | 2013-12-21 | Valve locator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320847311.2U CN203604765U (en) | 2013-12-21 | 2013-12-21 | Valve locator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203604765U true CN203604765U (en) | 2014-05-21 |
Family
ID=50717439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320847311.2U Expired - Fee Related CN203604765U (en) | 2013-12-21 | 2013-12-21 | Valve locator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203604765U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612897A (en) * | 2018-07-13 | 2018-10-02 | 深圳市摩控自动化设备有限公司 | Electropneumatic valve positioner |
-
2013
- 2013-12-21 CN CN201320847311.2U patent/CN203604765U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612897A (en) * | 2018-07-13 | 2018-10-02 | 深圳市摩控自动化设备有限公司 | Electropneumatic valve positioner |
| CN108612897B (en) * | 2018-07-13 | 2024-05-17 | 深圳市摩控自动化设备有限公司 | Positioner for electric valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20140521 Termination date: 20201221 |