A new type of intelligent electric valve control panel

A new type of intelligent electric valve control panel

A better piece of equipment requires proper operation and, most importantly, adequate preparation for operation. The actual operation mode of electric valve includes the preparation before operation and the matters needing attention during operation, which are detailed as follows: 1. Preparation before operation 1. Before operating the valve, read the operation instructions carefully.
A better piece of equipment requires proper operation and, most importantly, adequate preparation for operation.
The actual operation mode of electric valve includes the preparation work before operation and the matters needing attention during operation. The details are as follows:
1. Preparation before operation
1. Before operating the valve, read the operation indication carefully.
2, before the operation must be clear about the gas inflow, should carefully check the valve opening and closing mark.
3, check the electric regulating valve appearance, see whether the electric valve is return tide, if there is a return tide need to be solved; If any problems are found, handle them properly. Do not perform common operations.
4. For the electric device that has been stopped for more than 3 months, check the clutch before operation, determine the position of the rocker in manual mode, and then check the insulation layer, conversion and distribution line of the motor.
Two, electric valve operation common problems
1. During operation, ensure that the clutch rocker is in the corresponding part.
2. If the electric regulating valve is operated in the main control room, the switching switch is played in the REMOTE part, and then the power switch of the electric regulating valve is controlled by the SCADA automatic control system.
3, if manual operation, switch to LOC>
4. When choosing to operate the valve on the spot, the opening and closing mark of the valve and the running condition of the valve seat should be monitored, and the opening and closing degree of the valve should meet the regulations.
5. When the valve is fully closed by on-site operation, the electric valve should be stopped before the valve is closed in time, and the valve should be closed in time by the shaft body.
6. When opening or closing the valve after setting the value of the travel arrangement and the super torque control board, it is necessary to pay attention to monitoring the control condition of the travel arrangement. If the valve power switch does not stop to the position, it should be immediately stopped manually.
7, open and close the valve link, found that the indicator is not correct, valve abnormal sound, need to shut down inspection in time.
8. The switching power supply of the electric valve should be turned off after successful operation.
9. At the same time, when operating several valves, it is necessary to pay attention to the operation order and comply with the production process.
10. When opening a large size valve with a by-pass valve, if the pressure difference between the two ends is relatively large, the inlet valve should be opened to change the pressure and the distribution valve should be opened again.
11. When receiving the pig ball (device), the gate valve through it must be opened.
12, the operation of gate valve, stop valve, stop valve, disc valve only open or closed, prohibited for control.
13, the operation of the stop valve, stop valve and plate valve link, when shut off or open to the upper fixed point or the bottom dead point, should rotate 1/2 ~ 1 circle.
A new intelligent electric valve control panel
Brief introduction
DSM modular intelligent electric valve control panel adopts advanced micro-processing technology, highly integrated IC chip and its long service life power output components. It accepts DC4~20mA adjustment data signal from the dashboard and DC4~20mA valve position control signal of the upper and lower electric actuator (or “three-wire” data signal of the resistor). Export “on” and “off” data signals to complete the valve opening degree control and adjustment. DSM modular intelligent electric valve control panel, with data setting, indicating, positioning, motor turn to turn maintenance, disconnect report and valve instrument calibration and other advanced functions. Smooth and accurate operation of valve, intake valve and diaphragm adjustment structure. Can be widely used in power generation, metallurgical industry, crude oil, chemical industry and other industries.
DSM modular intelligent electric valve control panel can be applied not only to single-phase AC motor actuators (such as DKJ and DKZ electric actuators), but also to three-phase AC motor actuators and electric devices. DSM modular intelligent electric valve control panel with traditional electric valve collocation, in the availability, reliability, accuracy and other aspects can be improved several times, for upgrading and upgrading the old electric actuator has brought new vitality.
Main features:
Intelligent correction: When correcting the “zero” and “full” of the valve position opening degree and the output voltage of the valve position, there is no need to adjust the resistor, no need to use the standard testing instrument to carry out complex adjustment, only need to press the function key once in the specific “close” and “open” parts of the valve, then the innovative setting of the section automatic and accurate adjustment to 0-100% and DC4-20mA.
The data can be set the main parameters of the valve electrodynamic area, small overcharge, stable performance, high precision.
Open direction at will: When changing the opening direction of the valve and the mode of action of the valve, it can be completed according to the function key setting without dismantling all the wiring.
Intelligent horizontal distance: can prevent concussion or too “impact” condition, improve accuracy.
Error control alarm function: Once the actuator fails, the intelligent system error control alarm function can automatically error control and report, indicating the fault phenomenon of the actuator and accurately marking the working state of the actuator. According to different fault phenomena, it shows that different types of alarm systems will reduce the time required for customer fault detection and restore the actuator to normal operation as soon as possible.
Automatic phase difference maintenance: Before site wiring, ensure that the neutral line of three-phase AC power issued to the actuator is appropriate, because once the neutral line is incorrect, it is easy to appear improper motor rotation, thus damaging the valve and actuator. Now customers can completely eliminate this distress, wiring should not be considered when the neutral line fire line problem. When the spot wiring phase difference is out of order, the phase synchronization controller will automatically correct the phase difference to ensure that the valve is executed according to the command direction. That is, when the actuator receives the open instruction, it will always rotate according to the open position set in advance, and it will not operate in the opposite direction because of the neutral line replacement.
Abnormal maintenance:
Motor overcurrent protection: When the actuator motor is running, the DSZH220 will automatically stop the motor due to various reasons to cause the motor to have overcurrent.
Instantaneous reversal maintenance: When the actuator begins to rotate in one direction, for example, the valve opening position has been implemented. If the valve closing instruction is received, the internal control logic of the actuator may delay for a set period of time before the valve closing instruction is implemented. This technology will reduce the impact of the motor current and increase the service life of the power components, while avoiding the impact load on the valve seat, reduction box and other mechanical transmission device is likely to cause damage, thereby maintaining the motor efficiently.
Valve plug maintenance: If the actuator cannot get rid of the torque required for valve operation, the preconditions for valve plug are present. When the actuator receives the start signal to open or close, if the valve is stuck, in the preset time and no posture, the internal structure of the power circuit will break the corresponding contact point, mandatory interrupt the operation of the actuator, at the same time, the corresponding alarm system, in addition to the data signal can also be exported through RS485.
Data can be set when the input signal is disconnected reporting and protection.
Select non-loss read-write storage devices, easy to change the main parameters, turn off the power for long-term storage.
Automatic/manual conversion without interference, good anti-interference ability.
Simple operation: the operator does have a lot of complicated functions, but the internal structure of the mobile phone software has left the “inconvenience” to you, the “convenience” to the customer, prompting the man-machine exchange operation is simple and easy to learn.
(The actuator of AC220V motor is fully controlled, and the actuator of AC380V motor needs to add the power driving mechanism of AC380V)