Principle of high temperature and high pressure angle valve
High temperature and high pressure valve opening and closing parts are plug shaped valve, sealing surface flat or cone, fluid along the centerline of the valve for linear motion. Stem movement in the form of lifting rod (stem lifting, hand wheel not lifting), but also lifting, rotating rod type (hand wheel with the valve stem to rotate up and down, nut on the valve body).It is a forced seal type valve, so when the valve closes, pressure must be applied to the disc to force the sealing surface to leak. When the medium into the valve six from the bottom of the valve, the operating force required to overcome the resistance, is the stem and the packing friction and pressure generated by the media thrust force than the valve off the valve opening force, so the diameter of the valve stem, otherwise it will bend the stem top of the fault. In recent years, the emergence of self sealing valve, globe valve replaced by medium flow on the top of the valve into the valve chamber, then in the medium under pressure, the valve off a small force, and force open the valve, stem diameter can be reduced accordingly. At the same time, in the role of media, this form of valve is also more stringent. China's valve "three to" has stipulated that the flow direction of the cut-off valve should be top-down.?When the high temperature and high pressure stop valve is opened, the opening height of the valve plate is 25% to 30% of the nominal diameter, and the flow rate has reached the maximum, indicating that the valve has reached the fully open position. Therefore, the full opening of the stop valve shall be determined by the stroke of the disc.
When the high temperature and high pressure stop valve is opened, the opening height of the valve plate is 25% to 30% of the nominal diameter, and the flow rate has reached the maximum, indicating that the valve has reached the fully open position. Therefore, the full opening of the stop valve shall be determined by the stroke of the disc.Definition：A high temperature high pressure valve, including valve body, valve seat, valve, valve stem, gland, packing and handle, the valve seat is arranged in the valve body, the joint is fixed on the valve body through the valve stem, consists of upper and lower pieces, upper and lower stem on the lower end of the valve rod are respectively a spherical groove, by aligning the ball and two connecting half ring is integrally connected with the stem, connecting the half ring on the outer side of a concave groove, the concave groove embedded with a fixed wire. The utility model is characterized in that the valve failure, do not need to replace the whole valve, only the exchange part of the vulnerability, and reduces the difficulty of processing, installation and disassembly is simple, easy maintenance, low production cost, good economy.
Principle:High temperature and high pressure valve opening and closing parts are plug shaped valve, sealing surface flat or cone, fluid along the centerline of the valve for linear motion. Stem movement in the form of lifting rod (stem lifting, hand wheel not lifting), but also lifting, rotating rod type (hand wheel with the valve stem to rotate up and down, nut on the valve body).It is a forced seal type valve, so when the valve closes, pressure must be applied to the disc to force the sealing surface to leak. When the medium into the valve six from the bottom of the valve, the operating force required to overcome the resistance, is the stem and the packing friction and pressure generated by the media thrust force than the valve off the valve opening force, so the diameter of the valve stem, otherwise it will bend the stem top of the fault. In recent years, the emergence of self sealing valve, globe valve replaced by medium flow on the top of the valve into the valve chamber, then in the medium under pressure, the valve off a small force, and force open the valve, stem diameter can be reduced accordingly. At the same time, in the role of media, this form of valve is also more stringent. China's valve "three to" has stipulated that the flow direction of the cut-off valve should be top-down.
