CN209416643U - A kind of air-valve dynamic performance testing control system based on PLC - Google Patents
A kind of air-valve dynamic performance testing control system based on PLC Download PDFInfo
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- CN209416643U CN209416643U CN201920001065.6U CN201920001065U CN209416643U CN 209416643 U CN209416643 U CN 209416643U CN 201920001065 U CN201920001065 U CN 201920001065U CN 209416643 U CN209416643 U CN 209416643U
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Abstract
The air-valve dynamic performance testing control system based on PLC that the utility model relates to a kind of, including PLC control system, the PLC control system is connect with industrial control computer, the PLC control system is connect with frequency converter, the PLC control system is connect with Analog input mModule, the PLC control system is connect with digital quantity input-output equipment, the PLC control system is connect with voltage transformation module, and the voltage transformation module is all connected with Analog input mModule, digital quantity input-output equipment.The utility model has the advantages of high-efficient, precision is high, and integrated level is high, strong antijamming capability.
Description
Technical field
The air-valve dynamic performance testing control system based on PLC that the present invention relates to a kind of.
Background technique
Air-valve dynamic performance testing system is that a set of computer for test valve discharge coefficient and flow resistance coefficient is automatic
Control system.The integrated level of country's test macro is low at present, and relevant test data is recorded by host computer, and the revolving speed of blower need to be
Console is adjusted or is directly controlled on frequency converter numerical digit operator.This inefficient operation, and the simulation that console uses
Amount control method precision is not high, wiring is complicated, anti-interference ability is low.
Summary of the invention
The air-valve dynamic performance testing control system based on PLC that the purpose of the present invention is to provide a kind of, have it is high-efficient,
The advantages of precision is high, and integrated level is high, strong antijamming capability, to solve the problems mentioned in the above background technology.
To achieve the above object, a kind of technical solution of the present invention: air-valve dynamic performance testing control system based on PLC
System, including PLC control system, the PLC control system are connect with industrial control computer, the PLC control system and frequency conversion
Device connection, the PLC control system are connect with Analog input mModule, and the Analog input mModule includes atmospheric humidity sensing
Pressure difference transmitter, inlet flow rate pressure difference transmitter before and after device, atmosphere temperature transducer, barometric pressure sensor, valve, it is described
PLC control system is connect with digital quantity input-output equipment, and the digital quantity input-output equipment includes scram button, frequency increasing
Pass, frequency reduction switch, emergency stop indicator light, run indicator are increased, the PLC control system is connect with voltage transformation module,
The voltage transformation module is all connected with Analog input mModule, digital quantity input-output equipment.
Preferably, RS485 Communication Control is used between the PLC control system and frequency converter.
Preferably, the frequency converter is connect with blower.
Preferably, it is existing to be arranged in work for the atmospheric humidity sensor, atmosphere temperature transducer, barometric pressure sensor
?.
Preferably, pressure difference transmitter is connect with pressure gaging hole I and pressure gaging hole II before and after the valve.
Preferably, the inlet flow rate pressure difference transmitter is connect with pressure gaging hole III.
Compared with prior art, test can beneficial effects of the present invention: be completed by operating industrial control computer
Data analysis, display, storage and remote adjustment rotation speed of fan, improve the collection of air-valve dynamic performance and testing control system
Cheng Du and working efficiency；PLC control system is communicated using RS485 network with frequency converter, improves the control precision of blower, simultaneously
Improve the disadvantage using anti-interference difference when Analog control；Scram button can be when industrial control computer be controlled and is failed
Frequency is promptly adjusted to zero, perfect Security Assurance Mechanism.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of air-valve dynamic performance testing control system based on PLC of the invention；
Fig. 2 is the schematic diagram of application air-valve dynamic performance and testing of the present invention
1. blower；2. pressure gaging hole I；3. measured valve；4. pressure gaging hole II；5. pressure gaging hole III.
Specific embodiment
As shown in Figure 1 and Figure 2, a kind of air-valve dynamic performance testing control system based on PLC, including PLC control system,
The PLC control system is connect with industrial control computer, and the PLC control system is connect with frequency converter, PLC control system
System connect with Analog input mModule, the Analog input mModule include atmospheric humidity sensor, atmosphere temperature transducer, greatly
Pressure difference transmitter, inlet flow rate pressure difference transmitter before and after air pressure force snesor, valve, the PLC control system and digital quantity are defeated
Enter output equipment connection, the digital quantity input-output equipment include scram button, frequency increase switch, frequency reduce switch,
Emergency stop indicator light, run indicator, the PLC control system are connect with voltage transformation module, the voltage transformation module and mould
Analog quantity input module, digital quantity input-output equipment are all connected with.
PLC control system receives the blower frequency control signal that industrial control computer is sent, and PLC control system is by the letter
Number frequency converter is sent to by RS485 network, frequency converter is operated according to the frequency signal control blower received.According to test
It needs, industrial control computer inputs different frequencies, adjusts the frequency of blower, i.e., adjustable air velocity.
Before Analog input mModule receives atmospheric humidity sensor, atmosphere temperature transducer, atmospheric pressure transmitter, valve
The analog signals of pressure difference transmitter and inlet flow rate pressure difference transmitter afterwards, and analog signals are converted into digital quantity, PLC
The digital quantity is converted to actual measured value by control system, while being sent to industrial control computer.Industrial control computer
The PLC control system data-signal received is handled, shown, is stored, test is carried out.
When scram button output is digital quantity signal, industrial control computer and PLC control system communication failure, industry control
Computer processed remotely can not make blower shut down, and press scram button, and PLC control system receives emergent stop signal, by frequency
It is adjusted to zero, is sent to frequency converter, control blower stops operating.
It is digital quantity signal that frequency, which increases switch and two switches of frequency reduction, and PLC control system receives frequency increasing
After increasing OFF signal, frequency reduction switching signal, changes current frequency as required, while being sent to frequency converter, adjust blower
Revolving speed.
Emergency stop indicator light, operating indicator light, when blower is respectively at stopping and operating two states, PLC control system is defeated
It controls signal accordingly out, keeps emergency stop indicator light and operating indicator light difference light.
Claims (6)
1. a kind of air-valve dynamic performance testing control system based on PLC, including PLC control system, which is characterized in that described
PLC control system is connect with industrial control computer, and the PLC control system is connect with frequency converter, the PLC control system with
Analog input mModule connection, the Analog input mModule includes atmospheric humidity sensor, atmosphere temperature transducer, atmospheric pressure
Pressure difference transmitter, inlet flow rate pressure difference transmitter before and after force snesor, valve, the PLC control system input defeated with digital quantity
Equipment connects out, and the digital quantity input-output equipment includes scram button, frequency increases switch, frequency reduces switch, emergency stop
Indicator light, run indicator, the PLC control system are connect with voltage transformation module, the voltage transformation module and analog quantity
Input module, digital quantity input-output equipment are all connected with.
2. a kind of air-valve dynamic performance testing control system based on PLC as described in claim 1, which is characterized in that described
PLC control system and frequency converter between use RS485 Communication Control.
3. a kind of air-valve dynamic performance testing control system based on PLC as claimed in claim 2, which is characterized in that described
Frequency converter connect with blower.
4. a kind of air-valve dynamic performance testing control system based on PLC as claimed in claim 3, which is characterized in that described
Atmospheric humidity sensor, atmosphere temperature transducer, barometric pressure sensor be arranged in working site.
5. a kind of air-valve dynamic performance testing control system based on PLC as claimed in claim 4, which is characterized in that described
Valve before and after pressure difference transmitter connect with pressure gaging hole I and pressure gaging hole II.
6. a kind of air-valve dynamic performance testing control system based on PLC as claimed in claim 5, which is characterized in that described
Inlet flow rate pressure difference transmitter connect with pressure gaging hole III.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920001065.6U CN209416643U (en) | 2019-01-02 | 2019-01-02 | A kind of air-valve dynamic performance testing control system based on PLC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920001065.6U CN209416643U (en) | 2019-01-02 | 2019-01-02 | A kind of air-valve dynamic performance testing control system based on PLC |
Publications (1)
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| CN209416643U true CN209416643U (en) | 2019-09-20 |
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| CN201920001065.6U Active CN209416643U (en) | 2019-01-02 | 2019-01-02 | A kind of air-valve dynamic performance testing control system based on PLC |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111323217A (en) * | 2020-04-15 | 2020-06-23 | 北京瑞利恒安科技有限责任公司 | Residual pressure valve performance detection device |
-
2019
- 2019-01-02 CN CN201920001065.6U patent/CN209416643U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111323217A (en) * | 2020-04-15 | 2020-06-23 | 北京瑞利恒安科技有限责任公司 | Residual pressure valve performance detection device |
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