CN203067897U - Valve positioning device - Google Patents
Valve positioning device Download PDFInfo
- Publication number
- CN203067897U CN203067897U CN 201220730618 CN201220730618U CN203067897U CN 203067897 U CN203067897 U CN 203067897U CN 201220730618 CN201220730618 CN 201220730618 CN 201220730618 U CN201220730618 U CN 201220730618U CN 203067897 U CN203067897 U CN 203067897U
- Authority
- CN
- China
- Prior art keywords
- valve
- positioning device
- control instrument
- valve positioning
- feedback means
- 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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- Magnetically Actuated Valves (AREA)
Abstract
The utility model provides a valve positioning device. The valve positioning device comprises a control instrument, a valve positioning device, a triac, a reversible motor and a feedback device. The control instrument, the valve positioning device, the triac and the reversible motor are sequentially connected, and the feedback device detects an electric adjustable valve state and transmits signals to the valve positioning device. The valve positioning device has the advantages of being simple in structure, convenient to operate, and strong in external-environment-disturbance-resisting capability.
Description
Technical field
The utility model belongs to the valve positioning field, especially relates to a kind of valve positioning device that is applied to electric actuator.
Background technique
The valve positioning device that is common in existing technology in the electric actuator adopts intellective electropneumatic valve positioner more, system CPU control, this technology is strict to environment and power supply system, often occurs " deadlock " phenomenon under strong electromagnetic interference environment, influences the proper functioning of electric actuator.
Summary of the invention
Problem to be solved in the utility model provides a kind of valve positioning device, is particluarly suitable for carrying out under the strong electromagnetic interference environment work.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of valve positioning device, it is characterized in that: comprise control instrument, valve positioner, bidirectional triode thyristor, reversible electric machine and feedback means, described control instrument, described valve positioner, described bidirectional triode thyristor and described reversible electric machine are connected successively, and described feedback means detects electricity accent valve state and transmits signals in the described valve positioner.
The detected electricity of described feedback means transfers valve state signal also can be sent in the described control instrument.
The output signal of described control instrument is 4～20mA electric current.
The output signal of described feedback means is 4～20mA electric current.
Advantage and the good effect that the utlity model has are: owing to adopt technique scheme that the valve positioning device structure is simplified, easy to operate, anti-external environmental interference ability is strong, and is less demanding to power supply system, effectively prevented " deadlock " phenomenon that causes because of extraneous strong electromagnetic.
Description of drawings
Fig. 1 is working principle schematic representation of the present utility model.
Embodiment
As shown in Figure 1, working procedure of the present utility model is as follows: control instrument adopts the PLC control mode, mode with output current transmits a signal to valve positioner, valve positioner is transferred the valve running according to the signal that receives from control instrument by bidirectional triode thyristor and reversible electric machine control electricity, meanwhile feedback means detects the virtual condition that electricity is transferred valve, and transfers valve state to be sent in the valve positioner in the mode of output current detected electricity.This signal also can be sent in the control instrument in addition, the signal that control instrument receives and the demonstration feedback means sends.The current signal that the current signal that valve positioner sends control instrument and feedback means send compares, when the current signal numerical value that the current signal numerical value that sends when feedback means and control instrument send has deviation, valve positioner is that benchmark is regulated self output current with the current signal numerical value that receives from control instrument, and the state by bidirectional triode thyristor and reversible electric machine control valve, consistent up to the current values of the detected current values of feedback means and control instrument output.Process by above-mentioned continuous adjusting realizes the valve location.
More than an embodiment of the present utility model is had been described in detail, but described content only is preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalizations of doing according to the utility model application range change and improve etc., all should still belong within the patent covering scope of the present utility model.
Claims (4)
1. valve positioning device, it is characterized in that: comprise control instrument, valve positioner, bidirectional triode thyristor, reversible electric machine and feedback means, described control instrument, described valve positioner, described bidirectional triode thyristor and described reversible electric machine are connected successively, and described feedback means detects electricity accent valve state and transmits signals in the described valve positioner.
2. valve positioning device according to claim 1 is characterized in that: the detected electricity of described feedback means is transferred valve state signal and also is sent in the described control instrument except being sent to described valve positioner China and foreign countries.
3. valve positioning device according to claim 1, it is characterized in that: the output signal of described control instrument is 4～20mA electric current.
4. valve positioning device according to claim 1, it is characterized in that: the output signal of described feedback means is 4～20mA electric current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220730618 CN203067897U (en) | 2012-12-26 | 2012-12-26 | Valve positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220730618 CN203067897U (en) | 2012-12-26 | 2012-12-26 | Valve positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203067897U true CN203067897U (en) | 2013-07-17 |
Family
ID=48766681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220730618 Expired - Fee Related CN203067897U (en) | 2012-12-26 | 2012-12-26 | Valve positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203067897U (en) |
-
2012
- 2012-12-26 CN CN 201220730618 patent/CN203067897U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20130717 Termination date: 20141226 |
|
| EXPY | Termination of patent right or utility model |