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    YATACO solenoid valve analysis 1

    Author:Source:Update time:2024-12-10 14:29:35 Read:
    Analysis of Yadeke solenoid valve 1


    Analysis of Yadeke solenoid valve
    Solenoid valves are widely used in our production. We must have encountered many problems related to solenoid valves during the maintenance of production, and have also dealt with them.

    Everyone must have accumulated a lot of experience in dealing with solenoid valve faults for various faults, and my handling of solenoid valve faults during maintenance is relatively better than other instruments

    There are relatively few control failures. Now I will discuss this issue with you, eager to learn more experience from everyone and improve together:
    Let’s first have a preliminary understanding of solenoid valves. It is composed of an electromagnetic coil and a magnetic core, and is a valve body containing one or several holes. When the coil is powered on or off, the operation of the magnetic core will cause the fluid to pass through the valve body or be cut off to achieve the purpose of changing the direction of the fluid. The electromagnetic components of the solenoid valve are composed of fixed iron core, moving iron core, coil and other components;the valve body part is composed of sliding valve core, sliding valve sleeve and spring base. etc. composition. The solenoid coil is directly installed on the valve body, and the valve body is enclosed in a sealed tube, forming a simple and compact combination. The solenoid valves we commonly use in production include two-position three-way, two-position four-way

    , two-position five-way, etc. Let’s first talk about the meaning of the two bits: for the solenoid valve, it is electrified and de-energized, and for the controlled valve, it is open and closed.

    In our oxygen generator instrumentation and control system, the two-position three-way solenoid valve is used the most. It can be used to connect or cut off the air source during production, thereby controlling the pneumatic diaphragm head
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    The air path is switched.
    It consists of a valve body, a valve cover, an electromagnetic component, a spring and a sealing structure. The sealing block at the bottom of the moving iron core uses the pressure of the spring to open the air inlet of the valve body

    Close. After power on, the electromagnet is attracted, and the sealing block with a spring on the upper part of the moving iron core closes the exhaust port, and the airflow enters the membrane head from the air inlet, which plays a control role

    is used. When power is lost, the electromagnetic force disappears, and the moving iron core leaves the fixed iron core under the action of spring force, moves downward, opens the exhaust port, and blocks the air inlet.


    The airflow of the membrane head is discharged through the exhaust port, and the diaphragm returns to its original position. In our oxygen production equipment, it is used in the emergency shut-off of the membrane regulating valve at the inlet of the turbine expander.
    Four-way solenoid valves are also widely used in our production. Their working principles are as follows:
    When current passes through the coil, an excitation effect is generated, and the fixed iron core attracts the moving iron. The moving iron core drives the slide valve core and compresses the spring, changing the position of the slide valve core, thereby changing the direction of the fluid. When the coil loses power, the elastic force of the spring pushes the slide valve core and pushes back the iron core inlet pump, causing the fluid to flow in the original direction. In our oxygen production, the switching of the forced valve of the molecular sieve switching system is controlled by a two-position four-way solenoid valve, and the air flow is supplied to the forced valve separately

    both ends of the piston. To control the opening and closing of the forced valve.

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