Oil gas pipeline rapid pressured plugging apparatus and plugging method

Abstract

The invention relates to an oil-gas pipeline rapid no-stop plugging device and an oil-gas pipeline rapid no-stop plugging method. The non-stop plugging device is provided with an internal steel cover and an external closed pipe which are sleeved together; the internal steel cover is a round pipe cover; the external wall of the internal steel cover is provided with an upper part and a lower part with different diameters; the outer diameter of the upper round pipe is smaller than that of the lower round pipe; the upper round pipe wall is provided with threads and screw nuts; the cover top is provided with an oblique draining opening; the upper end of the outer side of the cover top is provided with a horizontal pressing rod hole; a sealing ring is arranged on a saddle-shaped cover opening; the upper end of an external closed pipe is provided with an inward edge; an internal hole of the edge is sleeved on the upper round pipe; a sealing ring is arranged between the internal wall of the external closed pipe and the outer wall of the lower round pipe of the internal steel cover; and a binder filling hole is arranged at the side wall between the lower pipe opening of the external closed pipe and the sealing ring. The oil-gas pipeline rapid no-stop plugging device is provided with the steel cover, and the outer side of the steel cover is sleeved with the external closed pipe; when leaked points of an oil-gas pipeline are plugged, sequentially the steel cover is used to combine with the sealing ring and the external closed pipe is used to combine with the binders to carry out the rapid non-stop plugging of the leaked points on the oil-gas transportation pipeline in the process of the normal transportation of the oil-gas pipeline, so that the work amount is little, the consumed time is short, the cost is low and the normal transportation of oil and gas is not influenced in the process of plugging.

Description

technical field [0001] The invention relates to an auxiliary tool for maintenance of an oil and gas pipeline and a maintenance method for an oil and gas pipeline, in particular to a plugging device and a plugging method for fast and pressurized local leakage points on the oil and gas pipeline. Background technique [0002] Oil and gas pipelines are used for long-distance transportation of oil and natural gas. Some oil and gas pipelines are buried underground, and some are on the ground. The oil and natural gas in the oil and gas pipelines are transported under relatively high pressure. During the long-term operation of oil and gas pipelines, local leakage points such as cracks and holes often occur due to mechanical or chemical corrosion. Leakage and outflow are not only a waste of resources but also cause security incidents. Because the pressure in the oil and gas pipeline is very high, and the effluent is flammable liquid or gas, it is very difficult to block the leakage ...

AI Technical Summary

Problems solved by technology

This kind of temporary sealing device can only temporarily seal the leakage point. There is basically no oil or gas leakage or slight leakage at the mouth of the steel cover. It cannot be welded with hot fire, and it cannot realize the local leakage point on the oil and gas pipeline. rapid pressurized closure

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