CN205748896U - Control valve return circuit testing device - Google Patents
Control valve return circuit testing device Download PDFInfo
- Publication number
- CN205748896U CN205748896U CN201620518117.3U CN201620518117U CN205748896U CN 205748896 U CN205748896 U CN 205748896U CN 201620518117 U CN201620518117 U CN 201620518117U CN 205748896 U CN205748896 U CN 205748896U
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- valve
- controller
- control valve
- electric device
- switching mode
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Abstract
This utility model relates to a kind of test device, especially a kind of control valve return circuit testing device, belongs to the technical field of control valve test.The technical scheme provided according to this utility model, described control valve return circuit testing device, including for receiving the touch screen of operational order and for producing the controller of test signal, described touch screen is connected with controller, controller is connected with adjustment type valve to be tested by adjustment type electric device for valve, or is connected with switching mode valve to be tested by switching mode electric device for valve.This utility model compact conformation, simplifies the workload of control valve test, improves work efficiency, and automaticity is high, safe and reliable.
Description
Technical field
This utility model relates to a kind of test device, especially a kind of control valve return circuit testing device, belongs to control valve and surveys
The technical field of examination.
Background technology
In large production equipment, control valve is as the plant equipment coordinating pipeline that medium is adjusted control, extensively
Being applied to oil, chemical industry, electric power, in the industry such as water process.Control valve is to be made up of, according to power valve body and actuator
Source, actuator can be divided into pneumatic actuator, electric operator, electrohydraulic actuator.For electric operator
Speech, will realize the test of the regulation to control valve, it is necessary to external control cable, owing to industry standard routine is, for adjustment type
Control valve, uses 4 20mA electric current loop signal or 1-5V voltage signals, and control valve carries out the linear tune between 0-100%
Joint controls；For switching mode electrodynamic valve, use switch or the contact of Guan Bi, electrodynamic valve is carried out valve opening or closes valve control.
So control valve to be adjusted test, it is necessary to independent convenient exercisable signal source.
Due to conventional motor-operated control valve dispatch from the factory test time, need tester that multiparameter is tested, such as deviation, return
Difference, dead band, signalizing activity sensitivity etc., tester individual's Professional knowledge be there are certain requirements by it, simultaneously need to circuit tester, letter
Multiple instrument such as number source, when dispatching from the factory test, will seem loaded down with trivial details, affect tester's work efficiency.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of control valve loop-around test dress
Putting, its compact conformation, simplify the workload of control valve test, improve work efficiency, automaticity is high, safe and reliable.
The technical scheme provided according to this utility model, described control valve return circuit testing device, including for receiving operation
The touch screen instructed and the controller being used for producing test signal, described touch screen is connected with controller, and controller is by adjusting
Nodal pattern electric device for valve is connected with adjustment type valve to be tested, or is opened with to be tested by switching mode electric device for valve
Pass type valve connects.
Described controller uses PLC, and controller is by exporting AO module and the adjustment type valve of 4～20mA test current signals
Valve electric device connects, and controller is by the AI module of acquisition controlling valve physical location corresponding current signal and adjustment type valve
Electric device connects.
Delivery controller is connected with switching mode electric device for valve by the DO module of output switch/Guan Bi contact signal,
And be connected with switching mode electric device for valve by the DI module of acquisition controlling valve physical location contact signal.
Advantage of the present utility model: can receive test instruction by touch screen, controller produces corresponding according to test instruction
Test signal, it is thus possible to realize adjustment type valve or the Validity Test of switching mode valve, simplify the work of control valve test
Amount, compact conformation, improve work efficiency, automaticity is high, safe and reliable.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model.
Fig. 2 is the operation chart of this utility model touch screen.
Detailed description of the invention
Below in conjunction with concrete drawings and Examples, the utility model is described in further detail.
As shown in Figure 1: in order to simplify control valve test workload, improve work efficiency, this utility model include for
Receiving the touch screen of operational order and for producing the controller of test signal, described touch screen is connected with controller, controls
Device is connected with adjustment type valve to be tested by adjustment type electric device for valve, or passes through switching mode electric device for valve and treat
The switching mode valve of test connects.
Specifically, described controller use PLC, controller by output 4～20mA test current signals AO module with
Adjustment type electric device for valve connects, and controller passes through AI module and the tune of acquisition controlling valve physical location corresponding current signal
Nodal pattern electric device for valve connects.4～20 test current signals not having A can be exported by AO module, can be gathered by AI module
Adjustment type valve physical location corresponding 4～20mA current feedback signal, AO module, AI module can use the art
Conventional version, specially known to those skilled in the art, here is omitted.
Described controller is connected with switching mode electric device for valve by the DO module of output switch/Guan Bi contact signal,
And be connected with switching mode electric device for valve by the DI module gathering switching mode valve physical location contact signal.Specifically,
By DO module output switch/Guan Bi contact signal, it is achieved to the fully closed of switching mode valve or the control of standard-sized sheet, by DI module
For gathering the contact signal of switching mode valve physical location, it is used for judging that switching mode valve is in fully open position or fully closed position
Put；DO module, DI module can use the version that the art is conventional, specially known to those skilled in the art,
Here is omitted.
In this utility model embodiment, when control valve to be tested is adjustment type valve, then by described adjustment type valve
It is connected with adjustment type electric device for valve；When control valve to be tested is switching mode valve, then by described switching mode valve with
Switching mode electric device for valve connects, and adjustment type electric device for valve can drive the on off state of adjustment type valve, switching mode valve
Valve electric device can drive the on off state of switching mode valve, and adjustment type electric device for valve, switching mode electric device for valve can
With the version using the art to commonly use, specific constructive form can select as required, specifically chosen process
Known to those skilled in the art, here is omitted.When being embodied as, also include the Switching Power Supply mould for providing power supply
Block, after described switch power module is by changing outside civil power, it is provided that the voltage needed for the work such as touch screen, controller,
Switch power module specifically can repeat no more with the form using the art to commonly use.
For adjustment type valve or switching mode valve, contain for adjustment type valve and switching mode valve at controller internal memory
The test data of door, concrete test data can prestore according to test request.When specifically testing, production test personnel according to
Testing requirement, directly the button on operation touch screen, for adjustment type valve, needs to measure 0%, 25%, 50%, 75%,
100% 5 location point, touch screen receives the operational order of production test personnel, will pass to controller immediately under this instruction,
After controller receives this instruction, drive the test current signals of the corresponding sizes values of AO module output, described test electric current immediately
Signal directly control and regulation type valve event to valve opening corresponding to test current signals, and, adjustment type valve in real time will
Current valve open position is by AI module feedback to controller, and correspondence current valve open position is uploaded to touch by controller
Touch screen, touch screen real-time vision-control type valve opening size.Owing on touch screen, configuration has abundant man machine interface, including control
Valve opening processed (0%, 25%, 50%, 75%, 100%) instruction output, the fine setting of control valve aperture (± 1%/± 0.1%) instruction
Output, control valve action (valve opening, closes valve, stops) instruction output, control valve real-time aperture collection and display, control valve action is gone through
The functions such as history curve record.
For switching mode valve, controller drives DO module output switch/Guan Bi contact signal, thus controls electric valve
Device driving switching mode valve event is to standard-sized sheet/closed positions, and drives electric device feedback on DI module acquisition controlling valve
Physical location signal；The physical location signal fed back the most at last converts computing and is the digital quantity of 0-100% and is uploaded to touch screen,
The actual physical location of touch screen real-time display switch type valve.
This utility model can receive test instruction by touch screen, and controller produces according to test instruction and tests letter accordingly
Number, it is thus possible to realize, to adjustment type valve or the Validity Test of switching mode valve, simplifying the workload of control valve test, structure is tight
Gathering, improve work efficiency, automaticity is high, safe and reliable.
Claims (3)
1. a control valve return circuit testing device, is characterized in that: include the touch screen for receiving operational order and for producing
The controller of raw test signal, described touch screen is connected with controller, and controller passes through adjustment type electric device for valve with to be measured
The adjustment type valve of examination connects, or is connected with switching mode valve to be tested by switching mode electric device for valve.
Control valve return circuit testing device the most according to claim 1, is characterized in that: described controller uses PLC, controller
It is connected with adjustment type electric device for valve by the AO module of output 4 ~ 20mA test current signals, and controller is controlled by collection
The AI module of valve physical location corresponding current signal processed is connected with adjustment type electric device for valve.
Control valve return circuit testing device the most according to claim 1, is characterized in that: delivery controller by output switch/
The DO module of Guan Bi contact signal is connected with switching mode electric device for valve, and by acquisition controlling valve physical location contact signal
DI module be connected with switching mode electric device for valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620518117.3U CN205748896U (en) | 2016-05-31 | 2016-05-31 | Control valve return circuit testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620518117.3U CN205748896U (en) | 2016-05-31 | 2016-05-31 | Control valve return circuit testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205748896U true CN205748896U (en) | 2016-11-30 |
Family
ID=57362455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620518117.3U Active CN205748896U (en) | 2016-05-31 | 2016-05-31 | Control valve return circuit testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205748896U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108181535A (en) * | 2018-01-24 | 2018-06-19 | 张永升 | A kind of regulated electric actuating mechanism may be programmed automatic cycle testing platform |
| CN111948529A (en) * | 2020-08-18 | 2020-11-17 | 西安热工研究院有限公司 | Portable handheld valve setting device and testing method for power station |
-
2016
- 2016-05-31 CN CN201620518117.3U patent/CN205748896U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108181535A (en) * | 2018-01-24 | 2018-06-19 | 张永升 | A kind of regulated electric actuating mechanism may be programmed automatic cycle testing platform |
| CN111948529A (en) * | 2020-08-18 | 2020-11-17 | 西安热工研究院有限公司 | Portable handheld valve setting device and testing method for power station |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |