Ring wrapping leakage treatment method of coke oven bridge pipe

Abstract

The invention relates to the field of overhaul of coke oven bridge pipes, and provides a ring wrapping leakage treatment method of a coke oven bridge pipe. The ring wrapping leakage treatment method comprises the following steps of: cutting a metal pressure plate according to the length of a crack of the bridge pipe; bending the cut metal pressure plate, so that the radian of an inner bending surface is identical to that of the outside surface of the bridge pipe at the crack position; respectively welding a section of arc-shaped connecting part at each of two ends of the metal pressure plate so that the metal pressure plate and the two arc-shaped connecting parts form a wrapping sleeve; modulating a high-temperature resistant adhesive; uniformly smearing the adhesive to the crack position of the bridge pipe; sleeving and pressing the wrapped metal pressure plate at the crack position of the bridge pipe so that the metal pressure plate wraps the crack and is firmly adhered to the bridge pipe; and fixedly connecting the arc-shaped connecting parts at two ends of the metal pressure plate together. The bridge pipe is unnecessary to cut and carry by using the ring wrapping leakage treatment method of the coke oven bridge pipe; therefore, the construction difficulty is reduced; the repair time is shortened; the repaired bridge pipe can be continuously used; the service cycle of the bridge pipe is increased; the production cost is saved; and the ring wrapping leakage treatment method of the coke oven bridge pipe disclosed by the invention is applied to treating leakage of pipelines in a high-temperature low-pressure or negative-pressure environment.

Description

Technical field [0001] The invention relates to the field of inspection and repair of coke oven bridge pipes, in particular to a leak control method for coke oven bridge pipe rings. Background technique [0002] The coke oven is a continuous production equipment. The bridge pipe of the coke oven is an important equipment connecting the carbonization chamber and the gas collecting pipe. It is the place where raw gas and high and low pressure ammonia water meet. The bridge pipe is located at the key part of the rapid cooling and rapid heating. The temperature in the riser can reach 850°C. After the ammonia water is sprayed at the bridge pipe to cool down, it can drop to 200-300°C, and the temperature difference reaches more than 600°C. The bridge tube is cast iron, which is easy to crack and damage under the conditions of rapid cold and hot heat. Because the bridge pipe is corroded by raw gas and ammonia at high temperature, the bridge pipe cannot be repaired by welding after it i...

AI Technical Summary

Problems solved by technology

This method is to cut off the bridge tube as a whole and move it away, and then replace it with a new bridge tube. The workload is heavy, the service life of the bridge tube is shortened, and the implementation cost is high.

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