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Provide actual temperature and pressure when selecting high temperature and high pressure ball valve

by:Sino Valves     2021-11-28
The high temperature and high pressure valve is an automatic pressure relief protection device opened by the imported static pressure. The high temperature valve is one of the most important safety accessories for pressure vessels. The function of the high temperature valve is when the pressure in the vessel exceeds a certain value. The high temperature valve automatically opens the valve depending on the pressure of the medium itself, and the high temperature valve quickly discharges a certain amount of medium. High temperature valve When the pressure in the container drops to the allowable value, the high temperature safety valve automatically closes. The high temperature safety valve keeps the pressure in the container below the upper limit of the allowable pressure. The high temperature valve automatically prevents accidents that may occur due to overpressure. Also known as the ultimate protection device for pressure vessels. Among the types of ball valves, it is possible to achieve high pressure design under high temperature conditions. Therefore, high temperature and high pressure in the ball valve can be jointly met. When selecting high temperature and high pressure ball valves, it is necessary to provide the actual temperature and pressure. Here is a description of the fields and conditions of use of high temperature and high pressure ball valves: Application fields and advantages of high temperature and high pressure ball valves. High temperature and high pressure ball valves are different from ordinary valves. The opening and closing parts are designed as spheres, which are driven by the valve stem to rotate around the axis of the sealing surface. Regulating fluid is a very important part of fluid control. Here is a detailed introduction to the high-pressure ball valve. 1. Applicable fields As one of the basic pipeline fluid control parts, the high-pressure ball valve has a wide range of applications, but at the same time, compared with other valve types, it has its own unique characteristics. The high-pressure ball valve works by the rotation of the opening and closing parts. The main function is to connect or cut off the fluid. It can also be used to adjust and control the fluid, while the high-pressure gate valve works through the lifting movement. Another feature of the high temperature and high pressure ball valve is that a large shear force can be generated between the inner valve core and the valve seat made of cemented carbide, so it is most suitable for not only the connection of fluids, liquids, and natural gas. Truncated, more suitable for fluid media containing tiny solid particles and fine fibers. If it is a high temperature and high pressure ball valve with a multi-port design, it can also control the diversion and merging of the fluid medium and the switching of the fluid direction more flexibly. 2. Advantages in use Compared with high-pressure gate valves, high-temperature and high-pressure ball valves can withstand very small fluid pressure, and there is no fluid resistance even for full bores. And the scope of application is very wide, whether it is high pressure or high vacuum conditions can be used. Because of the high shear force between the ball core and the valve seat, the high temperature and high pressure ball valve is very suitable for controlling and adjusting the fluid medium containing solid suspended particles. When fully open and fully open, because it is separated from the medium, it will not be corroded by the medium. . The application fields and advantages of the high temperature and high pressure ball valve have been introduced here. If there is a demand, we must find a regular business for purchase. The application range of high temperature and high pressure ball valve is very wide, for example, it will be used in some fields such as chemical industry, metallurgy, hydropower, etc. However, there are certain matters that need to be paid attention to in the process of use, and I will introduce it to you below. 1. Because the valve plate of the high temperature and high pressure ball valve has multiple layers of soft and hard stacked sealing rings fixed on it, when the sliding plate is in a normally open state, the medium will form an scouring force on the sealing surface of the high temperature and high pressure ball valve, and The soft sealing tape in the metal interlayer will directly affect the sealing performance after being scoured. Therefore, in the process of use, we must pay attention to the sealing performance. 2. When making high temperature and high pressure ball valves, the diameter should be greater than dn 200. If the overall structure of the valve plate is too thick, there will be a lot of flow obstruction, that is, the diameter is limited by the structural conditions. 3. In fact, the sealing performance between the sealing surface of the valve plate of the high temperature and high pressure ball valve and the valve seat mainly depends on the torque of the transmission device so that the valve plate is pressed against the valve seat. If it is in a positive state, the higher the medium pressure, the tighter the seal extrusion will be. Therefore, when the medium is left to flow back, as the medium pressure continues to increase, when the unit positive pressure between the valve plate and the valve seat is small and the medium pressure, the seal of the high-temperature ball valve will begin to leak. The above are the precautions for high temperature and high pressure ball valves. In the process of daily use, you must pay more attention. In order to purchase higher quality and avoid wrong operation during use, the editor recommends that every consumer should understand the relevant knowledge of high temperature and high pressure ball valves, and be aware of them, so that they will not make a choice. Xiaobai And operation noob. This article was edited and published by Valve (Technical Department)
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