Gas pipeline water draining device with blockage preventing and gas isolating functions

Abstract

A gas pipeline water draining device with blockage preventing and gas isolating functions comprises a water draining device barrel body, a first-stage water sealing pipe, a second-stage water sealing pipe, a water draining pipe and a dispersing pipe, wherein an inner cavity of the water draining device barrel body is divided into a first-stage water sealing chamber, a second-stage water sealing chamber and a water draining chamber through separating plates; the first-stage water sealing chamber, the second-stage water sealing chamber and the water draining chamber are sequentially arranged in the horizontal direction; a water overflowing hole is formed in the upper part of the separating plate between the second-stage water sealing chamber and the water draining chamber; the lower end of the first-stage water sealing pipe is positioned at the inner lower part of the first-stage water sealing chamber, and the upper end of the first-stage water sealing pipe is connected to a gas pipeline through a valve; the upper end of the second-stage water sealing pipe is positioned in the first-stage water sealing chamber, and the lower end of the second-stage water sealing pipe is positioned in the second-stage water sealing chamber; the lower end of the water draining pipe is positioned at the inner lower part of the water draining chamber, and the upper end of the water draining pipe extends out from the sidewall of the water draining device barrel body; the dispersing pipe is mounted on the top part of the water draining chamber. According to the device, a reliable separating device is provided; condensed water in the gas pipeline can be collected and drained; in addition, the gas can be prevented from leaking from a water draining port. Therefore, the safety of the gas pipeline and related equipment and people can be ensured.

Description

technical field [0001] The invention relates to a gas pipeline drainer, which can effectively prevent blockage and completely eliminate gas leakage accidents, and belongs to the technical field of gas pipeline equipment. Background technique [0002] The gas drain is an important safety device in the gas pipeline. It is mainly used to collect and discharge the condensed water in the gas pipeline, so as to prevent the gas pipeline from accumulating water and combining with the corrosive gas in the gas to form a strong corrosive liquid and corrode the pipeline. The structure of the traditional gas pipeline drainer is as follows: figure 1 As shown, the principle is that there are one-level or multi-pole water seal chambers in the barrel of the drainer, and each water seal chamber has a water seal tube. The height of the water level is gas pressure + 500mm water column), and the condensed water continuously entering it is discharged through the overflow of the drain. The conde...

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Problems solved by technology

[0003] 1. The traditional gas drain itself is not a "reliable partition device". When the gas pressure suddenly rises and breaks through the gas drain, it may cause a safety accident, and the safety of the gas pipeline and related equipment and personnel cannot be guaranteed.

[0004] 2. The water seal pipe inside the water seal chamber of the second level and above of the gas drainer is an elbow pipe, which is easy to accumulate ash and is difficult to dredge. After the ash accumulates, it is necessary to open the drainer with a gas cutter for cleaning, or even replace the drainer directly. Gas overhaul operation brings great potential safety hazard

[0005] 3. In order to prevent blockage, it is necessary to increase the diameter of the water seal pipes at all levels, but this will increase the amount of gas leakage when the water seal is broken down due to a system accident, causing greater safety hazards; if you want to avoid accidents caused by gas leakage , it is necessary to reduce the diameter of the water seal pipes at all levels, so that the water seal pipes are easy to block, thereby increasing the maintenance workload of the gas drain

That is, preventing blockage and reducing gas leakage are contradictory, and it is difficult to balance the two

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