CN207945335U - A kind of air door executer control device - Google Patents
A kind of air door executer control device Download PDFInfo
- Publication number
- CN207945335U CN207945335U CN201820133329.9U CN201820133329U CN207945335U CN 207945335 U CN207945335 U CN 207945335U CN 201820133329 U CN201820133329 U CN 201820133329U CN 207945335 U CN207945335 U CN 207945335U
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- Prior art keywords
- air door
- adjustable
- signal
- plc controller
- condition sensor
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Abstract
The utility model discloses a kind of air door executer control devices, including PLC controller, PLC controller connects a throttle condition sensor, PLC controller judges to export gate signal of blowing according to the signal of throttle condition sensor, it closes air door signal and air door acts stop signal, the throttle condition sensor includes a DC constant voltage source and adjustable rheostat, adjustable potentiometer connects constant pressure source, adjustable rheostatic adjusting knob is connect with the actuating arm of air door regulation motor, actuating arm is used for the aperture of damper and rotating synchronously the adjustable rheostat of adjusting knob adjusting makes constant pressure source export one 4 to 20mA variation electric signals, 4 to 20mA variation electric signals correspond to the opening size variation of air door.The utility model is simple in structure, and mounting and adjusting is convenient, drives a variable resistance to realize the signal acquisition to door opening amount using the rotation of airdoor control motor, it is simple and reliable with signal acquisition, it is low to environmental requirement, after solving the damage of mating control panel, problem that valve actuator can not be automatically controlled.
Description
Technical field
More particularly to a kind of air door executer control device of the utility model.
Background technology
There is a large amount of pipeline valve and its control systems in the heavy industry such as cement, metallurgy, wherein in actuator
Main control board is an essential part.Due to factors such as product itself quality, live dust, high temperature, often there is master control
Circuit board damage causes valve that can not collect control operation on WinCC pictures, can not also collect the aperture of control observation valve.
Invention content
The purpose of this utility model is to propose a kind of air door executer control device, utilizes the rotation band of airdoor control motor
A dynamic variable resistance realizes the signal acquisition to door opening amount, has signal acquisition simple and reliable, low to environmental requirement, solution
It has determined after the damage of mating control panel, the problem that valve actuator can not be automatically controlled.
To achieve the goals above, the technical solution of the utility model is：A kind of air door executer control device, including
PLC controller, PLC controller connect a throttle condition sensor, and PLC controller is sentenced according to the signal of throttle condition sensor
Disconnected to export gate signal of blowing in, close air door signal and air door action stop signal, the throttle condition sensor includes one straight
Constant pressure source and adjustable rheostat are flowed, adjustable rheostat connects constant pressure source, adjustable rheostatic adjusting knob and air door regulation motor
Actuating arm connection, actuating arm is used for the aperture of damper, and actuating arm rotates synchronously tune while the aperture of damper
Section knob, adjusting is adjustable, and rheostat makes constant pressure source export one 4 to 20mA variation electric signals, and 4 to 20mA variation electric signals correspond to
The opening size of air door changes.
Scheme is further：Described 4 to 20mA variation electric signals connect a 0-20mA/0-5V isolation sensor, 0-
20mA/0-5V isolation sensors output connection PLC controller.
Scheme is further：The DC constant voltage source is 5 volts, and the adjustable rheostat is 1000 ohm, and 1000 ohm can
Connection DC constant voltage source, the electric current of the 0-20mA/0-5V isolation sensors after adjusting rheostat to connect with 250 Ohmic resistances
Input terminal is connected between 1000 ohm of adjustable rheostats and 250 Ohmic resistances.
The comparison of the utility model and the prior art has the following advantages：
Simple in structure, mounting and adjusting is convenient, drives a variable resistance to realize to wind using the rotation of airdoor control motor
The signal acquisition of door open amount, has signal acquisition simple and reliable, low to environmental requirement, after solving mating control panel damage,
Valve actuator can not be automatically controlled problem.
The utility model is described in detail with reference to the accompanying drawings and examples.
Description of the drawings
Fig. 1 is the utility model logic circuit schematic diagram；
Fig. 2 is the adjustable rheostat adjustment structure schematic diagram of the utility model.
Specific implementation mode
A kind of air door executer control device, as shown in Figure 1, the air door executer control device includes PLC controller 1
（Programmable controller）, PLC controller one throttle condition sensor 2 of connection, PLC controller is according to throttle condition sensor
Signal judges to export gate signal 3 of blowing in, closes air door signal 4 and air door action stop signal 5, the throttle condition sensor packet
A DC constant voltage source 201 and adjustable rheostat 202 are included, adjustable rheostat connects constant pressure source, adjustable rheostatic adjusting knob
It connect with the actuating arm 6 of air door regulation motor, actuating arm is used for the aperture of damper, aperture of the actuating arm in damper
Rotating synchronously the adjustable rheostat of adjusting knob adjusting simultaneously makes constant pressure source export one 4 to 20mA variation electric signals, and 4 to 20mA become
Change the opening size variation that electric signal corresponds to air door.
In order to realize signal isolation：Described 4 to 20mA variation electric signals connect a 0-20mA/0-5V isolation sensor
203,0-20mA/0-5V isolation sensors output connection PLC controller.
Wherein：4 to 20mA change electric signals is realized by following circuits, i.e.,：The DC constant voltage source is 5 volts, institute
It is 1000 ohm to state adjustable rheostat, 1000 ohm of adjustable rheostats connected after connecting with 250 Ohmic resistances 204 5 volts it is straight
Flow constant pressure source.The current input terminal of the 0-20mA/0-5V isolation sensors is connected to 1000 ohm of adjustable rheostats and 250 Europe
Between nurse resistance.
The present embodiment takes 5V, 10W Switching Power Supply as DC constant voltage power supply, excessively closes valve or adjustment machine in order to prevent
Structure burns out Switching Power Supply when to adjustable rheostat resistance value being zero, so by 1000 ohm of adjustable rheostats and one 250 ohm
Resistance is connected, and accesses a signal isolation converter, and signal isolation switch input is sealed in 1000 ohm of adjustable variable resistances
Circuit between device and 250 Ohmic resistances.When actuating arm 6 makes valve opening change, adjustable rheostat resistance value occurs simultaneously
Respective change：When valve is fully closed, adjustable rheostat resistance value is about 1K ohm and adds 250 ohm of precision resistance, and loop load is about
1250 ohm, loop current is about 4mA.When valve wide open, adjustable rheostat resistance value is about 0 ohm and adds 250 Europe of precision resistance
Nurse, loop load are about 250 ohm, and loop current is about 20 mA, completely the same with 4-20 mA signals.
Airdoor control in embodiment is also applied for valve control, and wherein air door or valve is to drive worm gear snail by motor
Bar rotation realizes control by actuating arm, as shown in Fig. 2, adjustable rheostat 202 is fixed in air door adjusting control rack 7,
The actuating arm is also connected with a transmission gear 8 while controlling air door, is adjusted in adjustable rheostat by transmission gear 8
It is adjustable rheostatic that 9 engaged transmission of adjustment gear being arranged on knob drives the adjustable rheostatic adjusting knob rotation to realize
Resistance adjusts.
Claims (3)
1. a kind of air door executer control device, including PLC controller, PLC controller connects a throttle condition sensor,
PLC controller judges that exporting gate signal of blowing in, pass air door signal and air door action stops according to the signal of throttle condition sensor
Stop signal, which is characterized in that the throttle condition sensor includes a DC constant voltage source and adjustable rheostat, adjustable rheostat
Constant pressure source is connected, adjustable rheostatic adjusting knob is connect with the actuating arm of air door regulation motor, and actuating arm is used for damper
Aperture, actuating arm rotates synchronously adjusting knob while the aperture of damper, adjusts adjustable rheostat keeps constant pressure source defeated
Go out one 4 and change electric signal to 20mA, 4 to 20mA variation electric signals correspond to the opening size variation of air door.
2. air door executer control device according to claim 1, which is characterized in that described 4 to 20mA variation electric signals
Connect a 0-20mA/0-5V isolation sensor, 0-20mA/0-5V isolation sensors output connection PLC controller.
3. air door executer control device according to claim 2, which is characterized in that the DC constant voltage source is 5 volts, institute
It is 1000 ohm to state adjustable rheostat, and 1000 ohm of adjustable rheostats connect DC constant voltage after connecting with 250 Ohmic resistances
The current input terminal in source, the 0-20mA/0-5V isolation sensors is connected to 1000 ohm of adjustable rheostats and 250 Ohmic resistances
Between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820133329.9U CN207945335U (en) | 2018-01-26 | 2018-01-26 | A kind of air door executer control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820133329.9U CN207945335U (en) | 2018-01-26 | 2018-01-26 | A kind of air door executer control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207945335U true CN207945335U (en) | 2018-10-09 |
Family
ID=63702386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820133329.9U Active CN207945335U (en) | 2018-01-26 | 2018-01-26 | A kind of air door executer control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207945335U (en) |
-
2018
- 2018-01-26 CN CN201820133329.9U patent/CN207945335U/en active Active
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