An inline flexible seat flange for valves

Abstract

An embedded type flexible valve seat flange used for a valve comprises a valve seat (1), and is characterized by further comprising a flexible valve seat assembly and a pressure adjusting assembly; the flexible valve seat assembly comprises a flexible valve seat (2), a valve clack (3), a valve rod (4), a screw barrel (5) and an elastic valve switch device; the flexible valve seat (2) is sleeved with an air inlet of the valve seat (1); an inner threaded hole is formed in the valve clack (3); a boss (4-1) is arranged at one end of the valve rod (4) and inserted into the bottom of the inner threaded hole of the valve clack (3). The embedded type flexible valve seat flange is suitable for various industrial valves; the improved valve completely eradicates valve inner leakage caused by factors such as original design and manufacturing; maintenance is convenient; the maintenance cost is low; the service life is long; the split type lifting valve design enables the valve to be more flexibly and reliably opened and closed, and the embedded type flexible valve seat flange has the good market popularization value.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to an embedded flexible valve seat flange for valves. Background technique [0002] At present, the manufacturers of boiler steam soot blowers used in the domestic market include Diamond Power Machinery (Hubei) Co., Ltd. and Shanghai Clyde Bergemann Machinery Co., Ltd., and the soot blowers produced by these two brand series manufacturers are Steam lift valves, as well as all domestic valve manufacturers, have their own advantages and disadvantages in terms of their mechanism characteristics. [0003] Diamond series product soot blower steam poppet valve sealing seat is made of cobalt chromium tungsten hard alloy surfacing and grinding, and the flexible valve seat and poppet valve body are manufactured by welding process. Due to steam erosion and corrosion of high-quality alloys, the cobalt-chromium-tungsten carbide surface will be worn off after several grinding times, and the on-s...

AI Technical Summary

Problems solved by technology

[0003] Diamond series product soot blower steam poppet valve sealing seat is made of cobalt chromium tungsten hard alloy surfacing and grinding, and the flexible valve seat and poppet valve body are manufactured by welding process. Due to steam erosion and corrosion of high-quality alloys, the cobalt-chromium-tungsten carbide surface will be worn off after several grinding times, and the on-site grinding is difficult to meet the maintenance quality standards. After the alloy sealing surface is worn away, the valve seat cannot be replaced, resulting in maintenance Material cost is too high and wasteful

[0004] Clyde series product sootblower steam poppet valve sealing seat is made of 1Cr13 stainless steel material after high-frequency quenching, which is threadedly connected with the poppet valve body and sealed with copper gasket. This structure is theoretically for the convenience of replacing the valve seat and saving Maintenance costs, but the actual working conditions on site and the space structure of the valve body, the valve seat cannot be disassembled due to corrosion, and the temperature resistance, wear resistance and corrosion resistance of 1Cr13 stainless steel materials are not as good as cobalt chromium tungsten carbide materials

Therefore, the soot blower steam poppet valve of Clyde series products also has the difficulty of on-site grinding and it is difficult to meet the quality standards for maintenance. The valve seat of the threaded connection is more prone to internal leakage, which affects the safety of boiler equipment. The sealed valve seat is also damaged and worn. Replacing the valve seat leads to high cost of maintenance materials and great waste

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