High-pressure electronic welding control valve
Advantages
The imported electric high-pressure welding regulating valve is a single-seat control valve with a balanced sealing ring sleeve. The balance sealing ring is used to replace the upper valve seat, changing the traditional sleeve double-seat valve structure into a sleeve single-seat structure. This improvement greatly improves the leakage level of the sleeve valve. It is designed for heavy-load working conditions. It uses a balanced sealing ring to replace the upper valve seat to turn the double valve seat into one valve seat. It is used in occasions with high leakage requirements. The valve body has a compact structure, the fluid channel is S-shaped, and the structure is equipped with a guide wing to improve the smooth flow of fluid around the sleeve. The advantage is that the pressure drop loss is small, the flow rate is large, adjustable, and the flow characteristics are highly accurate. The valve core uses a pressure balance structure to control high-pressure differential conditions with a smaller actuator thrust. It is used in fluid control of medium-low and medium-low pressure pipelines that require good dynamic stability. Good sealing performance and large allowable pressure difference. Cage guide has a large guide area, good stability and compact structure. It can quickly replace internal parts and repair online, saving manpower and time. The flow coefficient is large and the adjustable ratio range is large. The balanced valve core design ensures that the required actuator thrust is small and economical. It is used in fluid control in pipelines that require good dynamic stability, medium-high temperature, and medium-high pressure.
Structural classification of electric control valves
Electric control valves can generally be divided into single-seat and double-seat structures:
The electric single-seat control valve is suitable for workplaces with strict leakage requirements, low pressure difference between the front and rear of the valve, and media with a certain viscosity and fiber content.
The electric double-seat control valve has the characteristics of small unbalanced force, large allowable pressure difference, and large flow capacity. It is suitable for occasions where leakage requirements are not strict.
Product display
The electric regulating valve is composed of a linear-turn electric actuator and a valve body. The valve adopts a multi-stage pressure reduction method to prevent turbidity and noise, and can regulate the flow smoothly. It accepts unified standard signals 0~10MA (D/C): 4~20MA (D/C) and is amplified by the servo amplifier, so that the motor drives the reducer to run and generate axial thrust, causing the valve core to move accordingly, thereby achieving alignment. Adjustment of process parameters such as pressure, flow, temperature, liquid, etc. The actuator is a pushing device, which uses power as power to output thrust. The control valve is the regulating part, which is in direct contact with the medium and regulates the flow of the medium. The electric straight-through single-seat control valve has the advantage of small leakage, but the unbalanced force is large, so the working pressure difference should not be too high. The electric straight-through double-seat control valve has the advantages of large flow force and small unbalanced force. It is widely used in automatic adjustment in chemical industry, petroleum, metallurgy, electric power, textile and other industries.
Product features
1. Multi-stage throttling, cage-type throttling sleeve matches the needle valve core, and can withstand large pressure differences
2. The valve seat is pressed and sealed independently. The tapered sealing surface ensures reliable sealing. When combined with the unbalanced valve core, it can achieve zero leakage.
3. The internal parts of the valve adopt stainless steel surface spraying technology, which is erosion-resistant and has long service life.
4. The single-stage pressure difference is relatively reduced, which expands the adjustment range. Especially at small flow rates, it still has good adjustment performance. Single-stage pressure
5. The difference is controlled within the critical pressure difference, and no cavitation or flashing occurs.
6. The matching clearance between the sleeve and the valve core is reasonable, and it is accompanied by a guide sleeve, which provides good guidance and smooth operation.
7. The valve has flexible operation, precise adjustment, no vibration and no noise.
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