High-temperature and high-pressure rigidity seal ball valve for new energy industry

Abstract

The invention discloses a high-temperature and high-pressure rigidity seal ball valve for a new energy industry. The high-temperature and high-pressure rigidity seal ball valve comprises a left valve body and a right valve body, wherein the left valve body is internally provided with a first medium channel; the right valve body is internally provided with a second medium channel; a ball body is arranged in a valve cavity of the left valve body; an elastic valve seat assembly is arranged in a positioning groove of a left valve body valve seat; a first rigidity seal layer is welded on the right valve body; a stepped valve rod is arranged at the upper end of the ball body; a stepped hole is formed in a position, aligning to the ball body, of the upper end of the left valve body; the stepped valve rod is arranged in the stepped hole in a penetrating manner; a first dust purging hole is formed in the middle part of the left valve body and is communicated with the valve cavity; a second dust purging hole is formed in the lower end of the right valve body and is communicated with a circular groove in the first rigidity seal layer. By adopting the technical scheme, the high-temperature and high-pressure rigidity seal ball valve has the advantages that reasonable structural design, simple structure and stable work are realized; the accident rate of blocking or locking under the work conditions of high-temperature dust is effectively reduced; dust is easy to clean and high in cleaning efficiency; the convenience in maintenance, safety and reliability are realized; the valve rod cannot be blown out.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a high-temperature and high-pressure hard-sealed ball valve used in the new energy industry. Background technique [0002] In the new energy polysilicon production process, the hardness of silicon powder is HRC52-62, and the medium contains hydrogen, hydrogen chloride, etc. Therefore, users put forward requirements for valves such as wear resistance, corrosion resistance, and high safety; in addition, coal chemical gas , the coal-to-oil industry and the high-temperature steam cut-off in power plants also require a large number of high-quality high-end hard-sealed ball valves. However, the existing ball valves still have shortcomings: the structural design is unreasonable, and they are often prone to jamming and locking under high-temperature dust conditions. Accidents; complex structure, troublesome dust cleaning operation, inconvenient maintenance, low dust cleaning efficiency; a...

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Problems solved by technology

[0002] In the new energy polysilicon production process, the hardness of silicon powder is HRC52-62, and the medium contains hydrogen, hydrogen chloride, etc. Therefore, users put forward requirements for valves such as wear resistance, corrosion resistance, and high safety; in addition, coal chemical gas , the coal-to-oil industry and the high-temperature steam cut-off in power plants also require a large number of high-quality high-end hard-sealed ball valves. However, the existing ball valves still have shortcomings: the structural design is unreasonable, and they are often prone to jamming and locking under high-temperature dust conditions. Accident; complex structure, troublesome dust cleaning operation, inconvenient maintenance, low efficiency of dust cleaning work; and the problem that the top-mounted valve stem of the existing ball valve is blown out by internal pressure, there are potential safety hazards, and the practicability is poor

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