CN2429673Y - Positioner for electric controlled valve - Google Patents
Positioner for electric controlled valve Download PDFInfo
- Publication number
- CN2429673Y CN2429673Y CN 00201542 CN00201542U CN2429673Y CN 2429673 Y CN2429673 Y CN 2429673Y CN 00201542 CN00201542 CN 00201542 CN 00201542 U CN00201542 U CN 00201542U CN 2429673 Y CN2429673 Y CN 2429673Y
- Authority
- CN
- China
- Prior art keywords
- positioner
- controlled valve
- electric controlled
- back pressure
- diaphragm
- 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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- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
The utility model relates to a positioner for an electric controlled valve, particularly the improvement of an amplifier assembly of the positioner. The positioner for an electric controlled valve is characterized in that the amplifier assembly comprises a constant throttling port (1), a nozzle (9), a baffle plate (10), two throttling needle valves (2, 2'), two valve core (4, 4'), an annular chamber (3), two air valves (5, 5'), a film set (6), a back pressure chamber (7), and an exhaust port (8). The positioner for an electric controlled valve can simultaneously be applied to a thin film type single acting actuator and a cylinder type double acting actuator, and has the advantages of high control precision, stability, reliability, good repeatability, large pneumatic power, fast acting speed, etc. The positioner for an electric controlled valve can be matched with the thin film type single acting actuator and the cylinder type double acting actuator.
Description
The utility model relates to a kind of electropneumatic valve positioner, especially wherein the improvement of amplifier block.
The supporting use of electropneumatic valve positioner and pneumatic control valve, it converts the dc current signal of electric controller to atmospheric pressure, the regulating and controlling valve events; Feed back according to the displacement of modulating valve simultaneously, thereby the position of valve can correctly be located by the control signal of electric controller output.Existing electropneumatic valve positioner has only a delivery outlet, can only with the supporting use of diaphragm type one action type final controlling element, be not suitable for the two action type final controlling element of cylinder type.Influenced the using scope of electropneumatic valve positioner.
The purpose of this utility model is to provide a kind of electropneumatic valve positioner that is applicable to diaphragm type one action type final controlling element and the two action type final controlling element of cylinder type simultaneously, its precision height, reliable and stable, to repeat performance good.
Technical solutions of the utility model are to change original single delivery outlet into positive and negative lose-lose outlet.Because the lose-lose outlet is controlled by same diaphragm unit, thereby reliably controls its switching time and precision.
The utility model detailed technology content in conjunction with the embodiments and accompanying drawing give to further specify.
Accompanying drawing is a kind of embodiment's of the utility model electropneumatic valve positioner a structural representation.
This electropneumatic valve positioner comprises amplifier block, it is characterized in that amplifier block comprises constant throttling orifice (1), two spools (4,4 '), two valves (5,5 '), ring casing (3), diaphragm group (6), back pressure chamber (7), adjust screw (13) and nozzle (9), baffle plate (10), constant throttling orifice (1) is positioned on the housing, communicate with back pressure chamber (7), nozzle (9) communicates with back pressure chamber (7), baffle plate (10) is installed on the main lever of torque motor (11), diaphragm group (6) comprises two diaphragms and air valve shaft, the tight riveting of diaphragm is on air valve shaft, diaphragm is installed on the amplifier housing, air valve shaft and spool are on same axis, adjust screw (13) and be installed on the housing, exhaust port (8) is positioned on the air valve shaft, communicates with atmosphere.Source of the gas is through constant throttling orifice (1), enter back pressure chamber (7), enter atmosphere by nozzle (9), because torque motor (11) is under the effect of electric controller dc current signal, distance between nozzle (9) and the baffle plate (10) changes, cause that back pressure chamber (7) back pressure changes, amplifier diaphragm group (6) under the effect of air feed ring casing (3) to the right (or a left side) move, promote valve (5 ') [or (5)], spool (4 ') [or (4)] is opened, bleed pressure is by OUT1 pipe (or OUT2 pipe) output, the valve (5) [or (5 ')] of air pressure through opening of OUT2 pipe (or OUT1 pipe), from the outwards exhaust of exhaust port (8) of diaphragm group, adjust the initial position that screw (13) is used to adjust spool (4 ', 4).When the feedback moment that the electromagnetic torque that produces when the input current signal of positioning work piece and the positioning work piece mechanical transmission by feedback means (12) obtains balanced each other, positioning work piece reached balance, realization input signal and the corresponding proportionate relationship of valve stroke one-tenth.
Throttle needle valve (2,2 ') is the Flow-rate adjustment of output OUT1, OUT2, to adapt to the corresponding governing speed of difference cylinder, improves stability.
As be used for one action type actuator, only need stifled the going up of OUT2 (or OUT1) got final product.
This electropneumatic valve positioner can be applicable to the two action type final controlling element of diaphragm type one action type final controlling element and cylinder type simultaneously, and has advantages such as control accuracy height, reliable and stable, good reproducibility, pneumatic power are big, quick action.Can with the two supporting uses of action type final controlling element of diaphragm type one action type final controlling element and cylinder type.
Claims (2)
1, a kind of electropneumatic valve positioner, comprise torque motor (11), feedback means (12) and amplifier block, it is characterized in that amplifier block comprises constant throttling orifice (1), two spools (4,4 '), two valves (5,5 '), ring casing (3), diaphragm group (6), back pressure chamber (7), adjust screw (13) and nozzle (9), baffle plate (10), constant throttling orifice (1) is positioned on the housing, communicate with back pressure chamber (7), nozzle (9) communicates with back pressure chamber (7), baffle plate (10) is installed on the main lever of torque motor (11), diaphragm group (6) comprises two diaphragms and air valve shaft, the tight riveting of diaphragm is on air valve shaft, diaphragm is installed on the amplifier housing, air valve shaft and spool are adjusted screw (13) and are installed on the housing on same axis, and exhaust port (8) is positioned on the air valve shaft.
2, electropneumatic valve positioner according to claim 1 is characterized in that being equipped with on the delivery outlet Throttle needle valve (2,2 ').
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00201542 CN2429673Y (en) | 2000-01-09 | 2000-01-09 | Positioner for electric controlled valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00201542 CN2429673Y (en) | 2000-01-09 | 2000-01-09 | Positioner for electric controlled valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2429673Y true CN2429673Y (en) | 2001-05-09 |
Family
ID=33570791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00201542 Expired - Fee Related CN2429673Y (en) | 2000-01-09 | 2000-01-09 | Positioner for electric controlled valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2429673Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324243C (en) * | 2004-04-14 | 2007-07-04 | 路冰宇 | Electro-hydraulic servo-valve |
| CN102235537A (en) * | 2010-04-08 | 2011-11-09 | 株式会社永泰 | Torque motor device for valve positioner |
| CN102563190A (en) * | 2012-02-03 | 2012-07-11 | 深圳乐满油气技术有限公司 | Pneumatic positioning actuator with intermittent gas supply |
| CN103148281A (en) * | 2013-03-20 | 2013-06-12 | 常熟市华夏仪表有限公司 | Stepless electric valve positioner |
| CN103353018A (en) * | 2013-07-26 | 2013-10-16 | 常熟市华夏仪表有限公司 | Zero point and range adjustment device for positioner |
| CN106090386A (en) * | 2016-06-27 | 2016-11-09 | 常熟市维特隆自动化仪表厂 | Electropneumatic valve positioner |
-
2000
- 2000-01-09 CN CN 00201542 patent/CN2429673Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324243C (en) * | 2004-04-14 | 2007-07-04 | 路冰宇 | Electro-hydraulic servo-valve |
| CN102235537A (en) * | 2010-04-08 | 2011-11-09 | 株式会社永泰 | Torque motor device for valve positioner |
| CN102563190A (en) * | 2012-02-03 | 2012-07-11 | 深圳乐满油气技术有限公司 | Pneumatic positioning actuator with intermittent gas supply |
| CN103148281A (en) * | 2013-03-20 | 2013-06-12 | 常熟市华夏仪表有限公司 | Stepless electric valve positioner |
| CN103353018A (en) * | 2013-07-26 | 2013-10-16 | 常熟市华夏仪表有限公司 | Zero point and range adjustment device for positioner |
| CN106090386A (en) * | 2016-06-27 | 2016-11-09 | 常熟市维特隆自动化仪表厂 | Electropneumatic valve positioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| FG1K | Grant of utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |