CN103335152A - Intelligent electro-pneumatic valve positioner with three-failure protection function - Google Patents
Intelligent electro-pneumatic valve positioner with three-failure protection function Download PDFInfo
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- CN103335152A CN103335152A CN2013102336169A CN201310233616A CN103335152A CN 103335152 A CN103335152 A CN 103335152A CN 2013102336169 A CN2013102336169 A CN 2013102336169A CN 201310233616 A CN201310233616 A CN 201310233616A CN 103335152 A CN103335152 A CN 103335152A
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- electromagnet
- trigger circuit
- baffle plate
- control signal
- signal input
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Abstract
The invention discloses an intelligent electro-pneumatic valve positioner with a three-failure protection function, which comprises a control signal input terminal, a gas source output terminal, a valve position detection feedback module, a spray nozzle and a baffle, wherein the signal output terminal of the valve position detection feedback module and the control signal input terminal are connected with a voltage comparator through a current/voltage converting circuit respectively; the voltage comparator is connected with a first electromagnet through an open direction trigger circuit, and is connected with a second electromagnet through a close direction trigger circuit; one end of the baffle is clung to the spray nozzle and the first electromagnet; the other end of the baffle is clung to the second electromagnet; the baffle is also connected with a return spring; a lock-out protection device is arranged at the gas source output terminal; the control signal input terminal is connected with the open direction trigger circuit and the close direction trigger circuit through a terminal signal protection circuit respectively. The intelligent electro-pneumatic valve positioner is simple in structure, and can perform protecting and locking functions for the opening degree of a valve during current failure, signal interrupt and gas failure.
Description
Technical field
The present invention relates to the intelligent electric valve positioner with three disconnected protections.
Background technique
In process control system and other automatic systems, pneumatic control valve has that governing speed is fast, degree of regulation is high, explosion-proof, can be adapted to abominable characteristics such as industry spot environment, therefore in industries such as medicine, chemical industry, nuclear energy, electric power, obtain a large amount of application.The topmost core component of pneumatic control valve is exactly valve positioner matching used with it.Valve positioner enters and discharges the pressurized air in the pneumatic control valve actuator by adjusting, the stroke of valve is controlled.Valve positioner is determining degree of regulation and the speed of pneumatic control valve.Therefore valve positioner has important effect for pneumatic control valve.Valve positioner mainly is by accepting the control signal from other controllers or user's setting, compare with the collection signal of position transducer, according to the algorithm of design the pneumatic signal that enters actuator is controlled then, thereby change the aperture of valve, the flowing of the medium that the control pneumatic control valve is regulated.
Summary of the invention
The object of the present invention is to provide a kind of intelligent electric valve positioners with three disconnected protections, it is simple in structure, can be at outage, break signal, when dying valve opening is protected and locked.
For achieving the above object, technological scheme of the present invention is a kind of intelligent electric valve positioner with three disconnected protections of design, comprises control signal input end, source of the gas output terminal, valve position detection feedback module, nozzle and baffle plate; The signal output part of valve position detection feedback module is connected voltage comparator by the current/voltage-converted circuit respectively with the control signal input end; Voltage comparator connects first electromagnet by opening to trigger circuit; Voltage comparator connects second electromagnet by closing to trigger circuit; The adjacent nozzle of one end and first electromagnet of baffle plate, adjacent second electromagnet of the other end of baffle plate, first electromagnet and second electromagnet are positioned at the baffle plate homonymy, and first electromagnet and nozzle are positioned at the homonymy of baffle plate; Baffle plate also is connected with Returnning spring; The source of the gas output terminal is provided with the latch-up protection device; The control signal input end connects out to trigger circuit respectively by the end signal protective circuit and closes to trigger circuit.
Advantage of the present invention and beneficial effect are: a kind of intelligent electric valve positioners with three disconnected protections are provided, and it is simple in structure, can be at outage, break signal, when dying valve opening is protected and locked.
Description of drawings
Fig. 1 is schematic representation of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is further described.Following examples only are used for technological scheme of the present invention more clearly is described, and can not limit protection scope of the present invention with this.
The concrete technological scheme of implementing of the present invention is:
As shown in Figure 1, a kind of intelligent electric valve positioner with three disconnected protections comprises control signal input end 1, source of the gas output terminal, valve position detection feedback module 3, nozzle 4 and baffle plate 5; The signal output part of valve position detection feedback module 3 is connected voltage comparator 7 by current/voltage-converted circuit 6 respectively with control signal input end 1; Voltage comparator 7 connects first electromagnet 9 by opening to trigger circuit 8; Voltage comparator 7 connects second electromagnet 11 by closing to trigger circuit 10; The adjacent nozzle 4 of one end of baffle plate 5 and first electromagnet 9, the other end of baffle plate 5 adjacent second electromagnet 11, the first electromagnet 9 and second electromagnet 11 are positioned at the homonymy of baffle plate 5, and first electromagnet 9 and nozzle 4 are positioned at the homonymy of baffle plate 5; Baffle plate 5 also is connected with Returnning spring 2; The source of the gas output terminal is provided with the latch-up protection device; Control signal input end 1 connects respectively by end signal protective circuit 12 to be opened to trigger circuit 8 and closes to trigger circuit 10.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (1)
1. with the intelligent electric valve positioner of three disconnected protections, it is characterized in that, comprise control signal input end, source of the gas output terminal, valve position detection feedback module, nozzle and baffle plate; The signal output part of valve position detection feedback module is connected voltage comparator by the current/voltage-converted circuit respectively with the control signal input end; Voltage comparator connects first electromagnet by opening to trigger circuit; Voltage comparator connects second electromagnet by closing to trigger circuit; The adjacent nozzle of one end and first electromagnet of baffle plate, adjacent second electromagnet of the other end of baffle plate, first electromagnet and second electromagnet are positioned at the baffle plate homonymy, and first electromagnet and nozzle are positioned at the homonymy of baffle plate; Baffle plate also is connected with Returnning spring; The source of the gas output terminal is provided with the latch-up protection device; The control signal input end connects out to trigger circuit respectively by the end signal protective circuit and closes to trigger circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102336169A CN103335152A (en) | 2013-06-13 | 2013-06-13 | Intelligent electro-pneumatic valve positioner with three-failure protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102336169A CN103335152A (en) | 2013-06-13 | 2013-06-13 | Intelligent electro-pneumatic valve positioner with three-failure protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103335152A true CN103335152A (en) | 2013-10-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102336169A Pending CN103335152A (en) | 2013-06-13 | 2013-06-13 | Intelligent electro-pneumatic valve positioner with three-failure protection function |
Country Status (1)
| Country | Link |
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| CN (1) | CN103335152A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003014157A (en) * | 2001-06-27 | 2003-01-15 | Koso Service Kk | Valve positioner and control unit |
| CN201043546Y (en) * | 2007-05-29 | 2008-04-02 | 天津市太平洋仪表有限公司 | Electric-pneumatic valve locator |
| CN101709804A (en) * | 2009-12-18 | 2010-05-19 | 浙江大学 | PWM driving circuit used for nozzle baffle plate of intelligent valve positioner |
| CN101858457A (en) * | 2010-03-26 | 2010-10-13 | 潘辉义 | Intelligent electropneumatic valve positioner and control system |
| CN102235537A (en) * | 2010-04-08 | 2011-11-09 | 株式会社永泰 | Torque motor device for valve positioner |
| CN103133749A (en) * | 2013-02-21 | 2013-06-05 | 常熟市维特隆自动化仪表厂 | Electrical-gas valve positioner with limiting position protecting part |
-
2013
- 2013-06-13 CN CN2013102336169A patent/CN103335152A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003014157A (en) * | 2001-06-27 | 2003-01-15 | Koso Service Kk | Valve positioner and control unit |
| CN201043546Y (en) * | 2007-05-29 | 2008-04-02 | 天津市太平洋仪表有限公司 | Electric-pneumatic valve locator |
| CN101709804A (en) * | 2009-12-18 | 2010-05-19 | 浙江大学 | PWM driving circuit used for nozzle baffle plate of intelligent valve positioner |
| CN101858457A (en) * | 2010-03-26 | 2010-10-13 | 潘辉义 | Intelligent electropneumatic valve positioner and control system |
| CN102235537A (en) * | 2010-04-08 | 2011-11-09 | 株式会社永泰 | Torque motor device for valve positioner |
| CN103133749A (en) * | 2013-02-21 | 2013-06-05 | 常熟市维特隆自动化仪表厂 | Electrical-gas valve positioner with limiting position protecting part |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131002 |