After nearly 30 years of introduction and innovation, Axial control valve technology has made great progress, but there is still a big gap compared with the international level. Mainly in the high temperature, high pressure, large diameter field, China's valves generally have problems such as stuck, vibration, high noise, excessive driving torque, low reliability, short life, and leaking seal packing. At the same time, theoretical research and structural innovation can not keep up with the needs of modern industrial development.
The Axial control valve is a new structural valve that is different from the Cv3000 series of regulating valves. It abandons the restraint of the ball valve body structure and the "S" type flow passage. The advantage of the sleeve regulating valve is absorbed, so that the sleeve and the valve core are placed in the flow passage of the valve body cavity, and the flow direction of the fluid does not change substantially during the passage of the regulating valve, and flows axially in the direction of the pipe. This can reduce the flow resistance of the flow path and increase the flow capacity of the valve.
Axial control valve overall structure introduction:
Unlike the traditional regulating valve circulation method, the Axial control valve changes the overall circulation structure of the conventional regulating valve, so that the medium flows axially along the annular flow path in the valve. The flow direction of the fluid in the valve body is small and the energy loss is small. The overall casting drum structure is more suitable for the stress requirements of the pressure vessel, and the pressure bearing performance is good.
The flow capacity of the traditional regulating valve cannot be further increased according to the constraint of the "S"-shaped flow passage structure of the spherical valve body structure. The reason is that the medium changes direction in the flow passage many times, and the medium easily forms a vortex in the flow passage and collides with each other. , Consume energy. Moreover, when the diameter of the Cv3000 series regulating valve is larger than DN400, the stroke of the valve is too long, the sensitivity is lowered, the overall structure is heavy, and the driving force is too large.
The Axial control valve avoids the above disadvantages, allowing the valve body flow passage to flow axially to the axial design, and a streamline conical shroud is provided in the valve body cavity. The flow velocity and the flow of the fluid are diverted to make the fluid distribution of the pipeline uniform, the pressure is balanced, and the flow of the medium in the control process of the valve does not substantially change.
The throttle component refers to the structure of the sleeve valve, the difference is that the axial flow valve installs the sleeve toward the pipeline, and the spool is axially moved in the sleeve, and the spool can be designed as a pressure balanced structure. The imbalance force caused by the pressure difference before and after the throttle is offset, thereby improving the constraint that the conventional valve diameter cannot be made large and the pressure difference is not large.
Related News
- Axial flow regulators have been so useful, no wonder so hot
- Axial flow control valves are now the world's core components
- Self-operated gas pressure regulating valve worm gear transmission adjustment and wiring method
- Axial valve manufacturers have years of experience delivering positive energy
- Principle and maintenance of safety shut-off valve for gas pressure regulating device
- Knowledge collection of pressure reducing valve for gas pressure regulating device
- What is the role of axial flow safety shut-off valves in various fields?
- Axial flow electric pressure regulator common problem diagnosis and maintenance
- What are the main reasons for the internal leakage of Axial On-off Valve?
- What are the main features of the axial flow regulator?
- Compressor anti-surge valve successfully passed the national new product identification
- The maintenance of the axial flow control valve must be in place to improve efficiency.
- Routine maintenance and maintenance of nitrogen axial flow regulator
- 防喘振阀的应用可以防止浪涌的影响
- 自力式气体调压阀原理可用于节流应用或开/关应用
- 做好一个阀 为工业强基贡献力量