How To Do Good Insulation Work For Knife Gate Valve
Update time:2021.11.10 Views:244
1. The bottom end connecting pipe and the plug that play the role of draining function can be connected by threads. When the temperature continues to rise, it is difficult to guarantee the thread and part of the sealing system. It is decided that the enterprise should cancel the plug and effectively connect the plug to the bottom end pipe. The head is replaced with a stepped sewage plug, and the connecting end is analyzed and sealed with a winding gasket to ensure the reliability of the sealing work at the bottom of the society. A valve in which the disc of a knife gate valve slides along the center line of the valve body. In-line check valve is a new type of valve. It is small in size, light in weight, and good in processing technology. It is one of the development directions of check valves. But the fluid resistance coefficient is slightly larger than that of the swing check valve. Swing check valves can also be used to supply pipelines for auxiliary systems whose pressure may rise above the system pressure. A check valve in which the disc of the wafer check valve rotates around the pin shaft in the valve seat. The disc check valve has a simple structure and can only be installed on a horizontal pipeline with good sealing performance. 2. The management and improvement of the structural problem that we usually use O-rings as radial seals between the support ring and the valve body, cancel the company’s O-ring sealing technology structure, which directly affects the processing steps on the support ring The design structure makes an important sealing cavity between the support ring and the valve body. Install a high temperature resistant flexible graphite composite seal ring in the sealed cavity, add a gasket with a tapered section behind the seal ring, and install a special network structure screw plug behind the gasket, so that the screw plug can be tightened. The plug transfers the force to the gasket. The tapered section of the gasket will squeeze the sealing ring. Whether the sealing ring produces a kind of deformation to make it close to the support ring and the valve body in the radial direction, so that the building insulation three-way ball valve can be obtained in the radial direction. A more high-temperature-resistant sealing product structure. At the same time, by tightening the screw plug, a certain pre-tightening sealing force is generated between the ball and the valve seat, making it impossible to obtain a good seal. 3. Corresponding improvements were also made in the structure of the valve seat sealing system. The embedded structure was adopted. The valve body and the support ring were dug out of the groove, and the bottom of the groove was installed with superior sealing performance and high temperature resistance flexibility. Graphite can not only improve the sealing protection of the bottom end of the valve seat, but also learn to play the role of the compensation mechanism for the expansion and contraction of the sealing pairs due to heat. A high-temperature-resistant metal valve seat is installed on the flexible graphite, and the ambient temperature can be increased to 425 degrees Celsius for long-term large-scale use, which solves the problem that the thermal insulation three-way ball valve cannot be used for a long time by people above 200 degrees Celsius. In addition, teachers can also choose valve seats of various main materials according to the requirements of actual operating conditions in China.
