Decompression elbow pipe

Abstract

The invention provides a decompression elbow pipe. The decompression elbow pipe is provided with a decompression through hole and a movable sealing device at the outer side (the side which is away from the center of curvature of an arc) of an arc section, the movable sealing device comprises a foundation support, a sealing plug, a positioning rod and an end cover; the foundation support is fixedly arranged on the outer side wall of the arc section, and the foundation support is provided with a decompression passage; the end cover is fixed on the foundation support, and the sealing plug is positioned in the decompression through hole through the positioning rod, a pin shaft and the end cover, when an outlet end of the decompression elbow pipe is blocked, the pin shaft is unplugged, the sealing plug moves towards the direction of the foundation support under the pressure effect, when the sealing plug is separated from the decompression through hole, the decompression through hole is opened, and fluid flows out from the decompression passage in the foundation support, so that a purpose of decompression is realized. The decompression elbow pipe does not have an area with poor mobility, the fluid does not remain nearby the decompression through hole, and the situation that the decompression through hole is blocked off can be avoided, so that compared with the prior art, the decompression elbow pipe has the advantage that the performance of the decompression elbow pipe is more reliable.

Description

technical field [0001] The invention relates to fluid conveying technology, in particular to a pressure relief elbow. Background technique [0002] In the field of fluid transportation, it is usually necessary to use pipes with a hollow structure to transport the fluid to a predetermined position; limited by the actual working environment, the pipes for conveying fluids usually use straight pipes and curved pipes. Obviously, the function of the curved pipe is to change Fluid flow direction. [0003] During fluid transportation, there is inevitably the problem of pipe blockage (commonly known as pipe blockage), especially when the properties of the fluid are more complex, the frequency of pipe blockage is higher, such as when conveying slurry mixed with solid and liquid, or When there are large-sized solids and other debris; the place where pipe blockage is most likely to occur is usually at the bend where the fluid flow direction changes sharply; The pressure inside the pu...

AI Technical Summary

Problems solved by technology

[0005] Although the above-mentioned pressure relief elbow can perform pressure relief in theory, it is found in the actual application process that during normal transportation, solid debris is easy to accumulate in the through hole, resulting in an increase in the frequency of pipe blockage, and When solid debris accumulates in the through hole, even if the shut-off valve is opened, the effect of pressure relief will be greatly reduced; especially, when conveying a slurry composed of solid and liquid, when the slurry solidifies, the accumulated slurry will easily dissipate The hole is completely blocked

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