High-temperature and high-pressure environment electromagnetic valve

Abstract

The invention discloses a high-temperature and high-pressure environment electromagnetic valve. A first valve pipe and a second valve pipe of the electromagnetic valve are communicated through a conducting hole; a fixed iron core and a coil arranged outside the fixed iron core in a sleeved mode are arranged in a control cavity; a movable iron core capable of sliding up and down is arranged at oneside of the fixed iron core; the upper end of the movable iron core is inserted into the control cavity; a valve head used for opening or closing the conducting hole is arranged at the bottom end of the movable iron core; the movable iron core between the valve head and the inner wall of the pipeline is connected to a spring in a sleeved mode; an electric control box is arranged at one side of theouter wall of the control cavity; a power interface and a circuit board are fixed in the electric control box; the circuit board is electrically connected to the coil and the power interface and provided with an electromagnetic valve control circuit; the electromagnetic valve control circuit is electrically connected to the coil and the power interface; a main control chip circuit controlling thecoil to be conducted controls the coil of the electromagnetic valve; the coil is adjusted to achieve adjustment of electromagnetic force in order to drive adjustment of the valve head of the electromagnetic valve, and particularly, the valve head of the electromagnetic valve can be accurately controlled in a high-temperature and high-pressure environment.

Description

technical field [0001] The invention relates to a solenoid valve, in particular to a solenoid valve in a high temperature and high pressure environment. Background technique [0002] Solenoid valves are the basic components of automation that control fluids electromagnetically, and are now very common in industrial control. A relatively basic solenoid valve such as CN201220163394.9 disclosed in Chinese Utility Model, a solenoid valve, comprising a valve body, a diaphragm, an isolation sleeve, a pressure plate, a fixed iron core, a movable iron core, a spring, a coil and a casing, the valve body There are water inlets and water outlets at both ends, a diaphragm is installed in the valve body, and an isolation sleeve is installed above the diaphragm. The isolation sleeve is fixed on the valve body through the pressure plate on the valve body; A movable iron core is installed in the sleeve, the spring is located in the movable iron core, and the upper end of the spring is fixe...

AI Technical Summary

Problems solved by technology

In fact, in the high temperature and high pressure environment, the physical mechanical mechanism or the properties of the electrical components of the solenoid valve will change, such as the deformation of the mechanical structure, which will affect its sensitivity, and the resistance change in the electrical properties will affect the control current, and this defect is mechanical manufacturing. It cannot be overcome in the process, which leads to the control command sent by the control end of the solenoid valve to the coil, which often cannot accurately adjust the magnetic field of the coil, that is, the electromagnetic force cannot be accurately output to drive the adjustment of the solenoid valve head.

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