High temperature water solenoid valve introduction

First, the structure principle of high temperature water solenoid valve

The valve diameter 15～100 is a pilot-type solenoid valve with a diaphragm type for secondary valve opening, and the pilot diameter solenoid valve with a diameter of 125-300 is three times, and its structure is mainly composed of a secondary valve and a main valve.

According to the switch state when the power is off, it can be divided into normally closed solenoid valve and normally open solenoid valve. Normally closed solenoid valve, when the position is normal, the movable iron core seals the auxiliary valve port, the pressure in the valve chamber is balanced, and the auxiliary valve and the main valve port are closed. When the coil is energized, an electromagnetic force is generated to attract the movable iron core, the auxiliary valve is opened, and the medium in the main valve chamber is leaked from the self-guide valve, so that a pressure difference is generated between the main valve and the valve cup, and the diaphragm or the valve cup is quickly lifted. The main valve port is opened and the valve is in a passage state.

When the coil is de-energized, the magnetic field disappears, the movable iron core is reset, the closed secondary closed port is closed, and the pressure in the auxiliary valve and the main valve valve cup is increased, the main valve valve cup is pressed against the valve seat, and the valve is closed again.

Normally open solenoid valve, when the coil is energized, the magnetic force is generated, the armature moves downward under the action of the magnetic force, the sub-valve cup is moved downward, the auxiliary valve is closed, and the main valve cup is equal to the upper and lower pressure difference. The weight is pressed against the sealing surface and the valve is closed. When the coil is de-energized, the magnetic force is zero, the armature and the sub-valve cup rise due to the spring action, the sub-valve opens, the medium in the main valve cup flows away through the sub-valve, the pressure drops, and when the pressure drops to a certain value, the main valve The valve cup is raised by the pressure difference between the upper and lower sides, the main valve is opened, and the valve is opened.

Second, the high-temperature water solenoid valve involves a wide variety, in the production, the relevant departments must carry out strict checks and monitoring. Ensure that its quality is effectively guaranteed.

High-temperature water solenoid valves are indispensable for fluid control in petroleum, chemical, power station, long-distance pipeline, shipbuilding, nuclear industry, various low-temperature projects, aerospace and marine oil production. The development and needs of industry have promoted the development of the valve industry. In recent years, while meeting the new requirements of high parameters in various aspects, we also pay close attention to how to improve performance, feasibility and reduce costs in terms of valve structure, materials and production processes.

The use of high temperature water solenoid valve is also very extensive, and the oil and gas industry has always been the largest buyer in the valve market.

At present, there are many proposed and expanded oil projects around the world. In addition, due to the increasing emphasis on environmental protection and the establishment of environmental protection regulations, the refineries established many years ago must be re-engineered, so in the next few years, oil will be invested. Funds for development and refining will also maintain growth momentum.

Third, the characteristics of high temperature water solenoid valve:

The normally open solenoid valve can be used with a bistable solenoid valve, and the other case is when the solenoid valve is temporarily opened for temporary closing. That is, after the solenoid valve is turned on, the power is turned off. At this time, the solenoid valve is kept open, and the solenoid valve is required to be turned off again when the valve is closed.

The solenoid valve is opened after the coil is de-energized, and the normally-opening solenoid valve is characterized in that the solenoid valve is closed when the coil is energized. The solenoid valve in the pipeline is opened for a long time, and the normally open type should be used when it is occasionally closed.

The control module can be used to prevent the normally closed solenoid valve coil from being overheated and burned.