Steam pipeline sealing device

Abstract

The invention discloses a steam pipeline sealing device comprising flange plates, a spacer layer and a high-temperature resistant castable. The flange plates are arranged at ports of a first steam pipeline and a second steam pipeline; a buffer connector is arranged between the first steam pipeline and the second steam pipeline, and the first steam pipeline and the second steam pipeline are fixed to the two sides of an annular groove correspondingly; a bump is connected to the outer side of the annular groove; a groove is formed in the periphery of the bump and filled with the high-temperature resistant castable; and a fixed piece is arranged on the inner side of the annular groove; and the spacer layer is arranged on the inner wall of the fixed piece. The spacer layer is arranged, thus the adhesive force of a graphite gasket in the sealing process is increased through a polyethylene plate; and the polyethylene plate is good in heat resistance, cold resistance and chemical stability and high in mechanical strength, so that the sealing effect of the butt joint position of the flange plates of the steam pipelines is strengthened, accordingly the steam pipeline sealing device can be used in a high temperature state for a long time and meanwhile is easy to replace, detach and mount.

Description

technical field [0001] The invention relates to the technical field of pipeline sealing equipment, in particular to a steam pipeline sealing device. Background technique [0002] The sealing technology of the on-off control part of the steam system pipeline is an urgent problem to be solved in the relevant field at present. The traditional control method generally adopts the disc globe valve. The gap between the valve disc and the valve body of the disc globe valve is large, and it is easy to wear and rust, so the sealing performance is poor, and frequent maintenance and replacement are required, resulting in increased purchase and use costs. In addition, in the existing steam pipeline sealing device, the contact surface between the valve body and the valve disc is usually set as a large plane, and the two hard planes are in contact with each other for sealing. Substances or impurities accumulate on this plane, resulting in a loose fit between the contact surface and the va...

AI Technical Summary

Problems solved by technology

The gap between the valve disc and the valve body of the disc globe valve is large, and it is easy to wear and rust, so the sealing performance is poor, and frequent maintenance and replacement are required, resulting in increased purchase and use costs

In addition, in the existing steam pipeline sealing device, the contact surface between the valve body and the valve disc is usually set as a large plane, and the two hard planes are in contact with each other for sealing. Substances or impurities accumulate on this plane, resulting in a loose fit between the contact surface and the valve disc, which reduces the sealing performance. Another convenience is that due to the high temperature, high pressure and fast flow rate of the medium in the steam pipeline, it will give off during operation. The sealing gasket in the pipeline brings large expansion force and impact force, which makes the seal at the butt joint very easy to age, and it is inconvenient to replace it frequently. Therefore, we improve this and propose a steam pipeline sealing device

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