Pipeline blockage alarm device

Abstract

The invention relates to a pipeline blockage alarm device, in particular to a device which is used under the condition that a pipeline is blocked, under the pressure difference action, a moving column moves and a microswitch is turned on to alarm. The pipeline blockage alarm device is characterized in that a slide channel (10) is arranged in a connection body, and the moving column (28) is arranged in the slide channel. One end of the slide column is connected with a protruding ball (22). When the pipeline is blocked, pressure difference is formed between an upstream connection pipeline (35) and a downstream connection pipeline (36). After two preset springs (5 and 16) are balanced, the moving column moves towards the microswitch in the slide channel along with increase of the pressure difference. The microswitch is turned on under certain action force so that the audible and visual alarm device connected with the microswitch is started, and audible and visual alarm is realized. Monitoring staff are enabled to find the position in which the pipeline is blocked.

Description

technical field [0001] The invention relates to an alarm device for pipeline blockage, in particular to an alarm device capable of sending out sound and light signals when the pipeline is blocked. Background technique [0002] With the development of the global economy and the shipping industry, since the 1990s, a series of large-scale dredging and blowing projects have been launched in Southeast Asia and the Middle East in response to the large-scale transport ships and the gradual shortage of coastal ports and industrial land. In recent years, dredging and land reclamation projects in my country's coastal cities have also been in the ascendant, such as Shanghai Yangshan, Hebei Caofeidian, and Tianjin Lingang Development Zone. Large-scale dredging and reclamation projects have emerged successively. In recent years, the locations of dredging and land reclamation projects have become more and more deep-water sea areas. Most large-scale dredging and backfill projects are carrie...

AI Technical Summary

Problems solved by technology

In recent years, the locations of dredging and land reclamation projects have become more and more deep-water sea areas. Most large-scale dredging and backfill projects are carried out in deep water areas, far from the shore, ranging from 2-3 kilometers to more than 10 kilometers. During the dredging and reclamation process, The mud is mainly transported through pipelines. Due to the harsh construction conditions and many influencing factors, currently only manual experience is used to guide the transport concentration during the mud transportation process. The mud concentration in the pipeline is not easy to control and the pipeline is often blocked. When the pipeline is blocked , the whole system was forced to stop, which not only increased the cost, but also affected the construction period. After many constructions, summarizing the law and location of its blockage, it was found that the blocked position has a certain pattern, generally at the corner of the pipeline, variable diameter, The position of the tee, the position of the more prominent "U" shape formed in the low-lying part of the pipe, etc. are often blocked

[0003] At present, after the pipeline is blocked, the method that is often used is to drill holes in the pipeline. This method has no other way. Stop drilling, this method of drilling is time-consuming and laborious, and it damages the pipeline and reduces the service life of the pipeline. It is very unscientific, but it is the most used method at present.

At present, there are related patents such as: an automatic alarm device for water blockage in sewer pipes (patent number 200920063212.9), which uses pressure difference to alarm, and the two sides of the pressure column are connected upstream and downstream, and the error is relatively large, and the blockage of the pipe mainly occurs in the bend The most important factor is that it must be installed on the pipeline, and the cost of using this device for large pipelines is relatively high.

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