Overview of electric globe valve:
The electric stop valve is installed with electric actuator on the basis of the globe valve. The opening and closing of the valve are controlled by the electric device. The connection between the valve and the actuator adopts the direct connection mode. The electric actuator has a built-in servo system. Without additional servo amplifier, the operation can be controlled by inputting 4-20mA signal and 220VAC power supply. The utility model has the advantages of simple connection, compact structure, small size, light weight, small resistance, stable and reliable action, etc. It can also be operated manually on site according to the requirements, and the actuator is equipped with manual and electric switching mechanism. In addition to local operation, remote operation can also be carried out.
Working principle of electric globe valve:
The closing principle of the electric globe valve is to rotate the valve rod by the electric thrust, so that the sealing surface of the valve disc and the sealing surface of the valve seat fit closely, and prevent the flow of medium. The electric globe valve only allows one-way flow of medium and has directionality during installation. The structural length of the stop valve is longer than that of the. At the same time, the fluid resistance is large, and the sealing reliability is not strong in long-term operation.
1 in the closed position, the valve body is under the mechanical pressure of the valve stem, and the sealing surface of the valve disc is tightly pressed on the valve seat.
2 when the hand wheel is turned counterclockwise, the valve rod moves in reverse direction, and the angle plane at its bottom makes the valve body separate from the valve seat.
3.The valve rod continues to lift and interacts with the guide pin in the screw groove of the valve rod, so that the valve disc starts to rotate without friction.
4 until it reaches the full open position, the valve rod is lifted to the limit position and rotated to the full open position.
Parameters of electric globe valve:
Valve material: cast iron, cast steel, stainless steel, forged steel, forged stainless steel, chrome molybdenum steel, low temperature steel.
Working pressure: 1.6-32mpa
Operating temperature: – 196 ° C – 550 ° C
Valve diameter: dn15-dn800
Connection method: flange, screw port or welding
Driving mode: Electric
Applicable media: water, oil, gas, steam, etc
Application fields: mechanical equipment, chemical equipment, general parts, industrial equipment, water supply and drainage equipment, papermaking equipment, pharmaceutical equipment, general equipment, petrochemical equipment, power equipment, gold powder equipment, mining equipment, municipal, electronic industry, etc.