The opening and closing object of the high-pressure gate valve is the gate. The movement direction of the gate is perpendicular to the fluid direction. The gate valve can only be completely and completely closed, and cannot be adjusted and throttled. The form of movement of the valve stem is lifting-stem lifting, handwheel does not lift, lifting rotating rod-handwheel rotates with the valve stem, the nut is installed on the valve, the following high-pressure valve maintenance manufacturers to share what is the high-pressure gate valve?

High pressure valve repair manufacturers talk about what is a high pressure gate valve? What are the characteristics?

(I) high pressure gate valve product characteristics

1. The middle flange bolt connection is adopted, and the two ends of the branch are flange connection structure.

2. Seat sealing surface of the iron-based chromium-nickel stainless steel welding, wear resistance and anti-scratch performance is good.

3. The surface of the valve is treated with corrosion-resistant nitriding, which has good corrosion resistance and abrasion resistance.

4. The closing and opening of the valve is controlled by the electric field value installed on the valve. Electrical equipment is equipped with special valve motor, reduction gearbox, torque control mechanism, stroke control mechanism, field working mechanism, hand and electric switch mechanism. The switch of the valve is adjusted by the stroke control mechanism, and the torque limiting mechanism is adjusted to protect the valve when the stroke control mechanism fails. The valve is closed mainly through the wedge-shaped double sliding plate that can be adjusted with the electric field value, the top of the universal joint, the clamping ring, etc., and the lifting movement is carried out through the internal guidance of the valve.

5. Electrical appliances can be operated not only locally, but also remotely.

Structural features and uses of (II) high-pressure gate valves

1. The electric high-pressure gate valve has compact structure, reasonable design, strong rigidity of the valve, smooth passage and small flow resistance coefficient.

2. High-voltage power station gate valve sealing surface is stainless steel and carbide, long service life.

3. The electric high-pressure gate valve adopts flexible graphite filling material, which is reliable in sealing and flexible in operation.

4. Drive mode separation, electric, pneumatic, gear transmission, structure type: elastic wedge single gate valve, rigid wedge single gate valve and double gate valve.

5. High-voltage power station gate valve is widely used in petrochemical, thermal power plants and other oil, water vapor pipeline to connect or cut off the pipeline medium switch cabinet.

High-pressure valve maintenance manufacturers believe that ultra-high pressure valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metals, and radioactive media. The opening and closing of the high-pressure valve is a disc-shaped valve that rotates around its own axis within the valve to achieve the purpose of opening and closing or adjustment.

1. Prevent the high pressure valve from working under the small opening degree. If the valve needle opens the small elevator or moves slowly, it will work in the small opening channel, the throttling interval is small, and the erosion is serious. Appropriately increase the pitch of the lock mechanism, increase the opening speed and the elevator, and increase the working openness, thereby increasing the throttle interval. Reduce erosion and increase service life.

2. Avoid high-pressure valves working on high-temperature media. The temperature of the medium has a great influence on the life of the valve. The higher the temperature of the medium, the shorter the life of the high-pressure valve, and vice versa. Therefore, adding a cooling device to the pressure relief valve can greatly increase the service life of the valve.

3. Use the corresponding sealing pressure under different working pressures. The high-pressure valve maintenance manufacturer recommends selecting the appropriate sealing ratio pressure, using a torque wrench to lock, or automatically controlling the high-pressure valve to ensure that the valve pin will not be squeezed with the valve when it is not worn. damage.

4. Regularly filter the high-pressure medium of the high-pressure valve and clean the filter, add the liquid, and apply the filter to filter. Frequent use, should be appropriate to shorten the cycle. Regular cleaning of the fuel tank and replacement of new media can shorten the cleaning and oil change cycle according to the actual operation of the equipment.

When installing or replacing the high-pressure valve needle valve, it should be properly cleaned. Avoid debris to accelerate the wear of the needle valve.