Electric valve controller How to correctly apply the electric valve

Electric valve controller How to correctly apply the electric valve

Electric valve controller is also known as electric valve control box, commonly known as gate valve control box or valve controller, and electric valve supporting the use of electrical equipment, mainly by the control power circuit, working display circuit, open degree mark power circuit and the main circuit four parts. It is used to control the opening and closing of the electric valve, which can realize the control of the electric valve for a long distance in the control room.
Electric valve controller is also known as electric valve control box, commonly known as gate valve control box or valve controller, and electric valve supporting the use of electrical equipment, mainly by the control power circuit, working display circuit, open degree mark power circuit and the main circuit four parts. It is used to control the opening and closing of the electric valve, which can realize the control of the electric valve for a long distance in the control room.
Generally: single-phase electric gate valve controller and three-phase gate valve controller. 1. Single-phase electric gate valve controller is used to control the development of gate valve electric devices and equipment, which can complete the opening, closing and central position control through the conversion of external power supply. 2. The three-phase gate valve controller is used to control the three-phase gate valve electric device, which is a kind of instrument and equipment. It can open and cancel the command to the three-phase gate valve electric equipment, complete the long-distance control of the valve, and also can be manually controlled on site. Basic principle of electric valve controller: after access to the switching power supply of the control device, the indicator light is on, the field/remote control display light is emerald green, and the controller is remote control. When the valve body is in the “open” position, the green indicator of “valve open” on the board is on. When the “closed” position is on, the red “valve close” display light is on. When the “open” and “closed” are in the middle position, the two display lights are not on.
Electric valve controller control circuit schematic diagram
When the electric valve to open or close the travel time should be terminated, you can hold down the “Stop” function key. If “over-torque” occurs during the opening or closing operation of the electric valve, the camshaft of the electric device will press one of the two toggle switches of KZK or GZK, and the motor will stop rotating later, and the alarm circuit will be connected. The red fault warning light will be on the board, and the alarm sound of 4KHz will be emitted from the voice-controlled switch. It is proposed that each controller of the customer be equipped with an air leakage switch.
The “field/remote control” function key is the field/remote control switch key, which is released for the remote control status lamp. Press and hold for the field status light to appear bright red. When the controller is selected for remote control, the “open valve”, “close valve”, “stop” and other function keys on the controller board play the control effect. Field electric valve in the “field open”, “field close” button failure (customers in the purchase of electric equipment, field control keys for optional parts, so some users of electric equipment is likely to not have field control effect, but no field control effect will not affect the remote control of the control device). When the selected controller is in the field state, the “field on” and “field off” buttons in the electric equipment control effect, and the “open valve”, “close valve”, “stop” and other function keys of the controller panel fail.
When the gate valve reaches the “open” position, the 1GXK toggle switch will be pressed by the camshaft and the motor will stop rotating. At the same time, the 2GXK toggle switch will be pressed by another camshaft and the yellow light indicating “valve closed” will be on.
Electric valve should be how to correctly apply electric valve electrical equipment control because of the increasing demand for industrial production automation, on the one hand, the use of electric valve is more and more, on the other hand, the control requirements of electric valve is also more and more high, more and more complex. Therefore, the electric valve in the electrical equipment control and other aspects of the design scheme is still innovating. With the development of science and technology and the rise of the use of electronic computers, new and diversified electrical equipment control will continue to occur. For the consideration of the overall control of the electric valve, it is necessary to select the control method of the electric valve.
Electric valve electrical equipment control because of the increasing demand for industrial production automation, on the one hand, the use of electric valve is more and more, on the other hand, the control requirements of electric valve is also more and more high, more and more complex. Therefore, the electric valve in the electrical equipment control and other aspects of the design scheme is still innovating. With the development of science and technology and the rise of the use of electronic computers, new and diversified electrical equipment control will continue to occur. For the consideration of the overall control of the electric valve, it is necessary to select the control method of the electric valve. For example, according to the project must, whether the application of centralized control method, or each control method, is not linked with other devices, program flow control or the use of computer language control, the basic principle of control are different. The sample provided by gate valve electric equipment manufacturer is the basic principle of standard electrical equipment control, so the application unit should communicate safety technology with electric equipment manufacturer and establish technical standards. In addition, when selecting the electric valve, we should pay attention to whether to buy additional electric valve controller. Because of the general situation, the controller must be independently purchased. In most cases, when each control is selected, it is necessary to buy a control device, because the purchase of a controller is more convenient and cost-effective than the design and production of consumers. If the control characteristics of the electrical equipment cannot meet the design standards of the construction engineering, the manufacturer should be clearly proposed to change or reposition.
Electric valve function requirements according to the engineering project control regulations, for electric valve, its control function is realized by electric equipment. The effect of the application of electric valve is to open, close and adjust the valve to complete the non-artificial electrical equipment control or computer control. The current application of electric equipment is no longer just about saving manpower. Because the function and quality of the products of different manufacturers differ greatly, therefore, the selection of electric equipment and the selection of gate valves are equally important to the project.
In pipe network engineering, the appropriate use of electric valves is one of the guarantee conditions to meet the requirements of use. If the use of electric valve selection is not reasonable, will not affect the application, but also have adverse effects or serious losses, therefore, in the pipe network engineering design should be reasonable use of electric valves. In addition to the main parameters of the pipeline, special attention should be paid to the natural conditions of its work. Because the electric equipment in the electric valve is a mechanical equipment, its working situation is very harmful to the environment in this work.
Generally speaking, the office environment where the electric valve is located has the following points:
1. Indoor installation or outdoor application with preventive measures;
2, outdoor outdoor assembly, cool wind, sand, morning dew, sun corrosion;
3, with flammable, flammable vapor or smoke natural environment;
4, cold wet zone, dry tropical climate natural environment;
5, pipeline material temperature as high as 480℃;
6, the operating temperature is less than -20℃;
7. Easy to be immersed in water or soaked in water;
8, with radioactive elements (nuclear power plants and radioactive element test equipment) natural environment;
9. Living environment on battleships and new ship ports (corrosion resistance, aspergillus flavus, damp and cold);
10. Places with strong vibration;
11. Places convenient for fire accidents; For the electric valve under the above environment, its electric equipment structure, materials and preventive measures are different. Therefore, the corresponding gate valve electric equipment should be selected according to the above office environment.