Multi-channel high-temperature all-metal sealing ball valve

Abstract

The invention discloses a multi-channel high-temperature all-metal sealing ball valve, and relates to valves. The multi-channel high-temperature all-metal sealing ball valve aims at solving the problem that in the prior art, due to limitation of a sealing piece, the high-temperature resistance is insufficient. According to the key points of the technical scheme, the multi-channel high-temperatureall-metal sealing ball valve comprises a valve body, a ball arranged in the valve body and a valve cover used for sealing the upper end of the valve body; the valve body is provided with an inlet connecting pipe and at least two outlet connecting pipes; the outlet connecting pipes are fixedly provided with valve sleeves, valve seats are arranged at the ends, facing the ball, of the valve sleeves,and the valve seats are provided with scrapers; and the scrapers are attached to the spherical surface of the ball, and the valve seats are provided with corrugated pipes used for pushing the valve seats. According to the multi-channel high-temperature all-metal sealing ball valve, under the premise of ensuring sealing performance, application of materials such as rubber with the insufficient high-temperature resistance is avoided, thus the high-temperature resistance of the multi-channel high-temperature all-metal sealing ball valve is improved, and the multi-channel high-temperature all-metal sealing ball valve can be used normally in the 650 DEG C high temperature environment.

Description

technical field [0001] The invention relates to valves, more specifically, it relates to a multi-channel high-temperature all-metal sealed ball valve. Background technique [0002] With its good sealing performance and high flow capacity, ball valves have now developed into a major valve type and are widely used in various fields; in high-temperature and high-pressure pipelines in electric power, petrochemical and other industries, hard seals are often used The ball valve acts as a cut-off isolation. [0003] The announcement number is CN205446812U, a kind of electric high-temperature resistant three-way ball valve announced by the Chinese patent. sleeve and electric control device, the first valve body is provided with A outlet and B outlet, and the second valve body is provided with C outlet, and the first valve body and the second valve body are fastened by several bolts A sleeve is installed in the B outlet of the first valve body, and the other end of the first valve ...

AI Technical Summary

Problems solved by technology

[0004] The high temperature resistance performance of the ball valve in actual use is mainly limited by the high temperature resistance performance of the sealing ring. The cited document and claim 5 disclose that "the composite sealing ring is composed of a U-shaped graphite sealing ring and a high temperature resistant O-ring. , the high-temperature-resistant O-ring is installed in the U-shaped groove of the U-shaped graphite sealing ring", although the above-mentioned composite design has improved the high-temperature performance of the sealing ring to a certain extent, it still cannot adapt to the high-temperature environment of 650°C; Therefore, a new solution is needed to solve this problem

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