Outfit for detecting plugging and choking of sewage pipelines and inspection wells by full air bag method

Abstract

The invention provides an outfit for detecting plugging and choking of sewage pipelines and inspection wells by a full air bag method, which structurally comprises a detected sewage inspection well, a sewage inspection well to be detected, a detected sewage pipeline, a sewage pipeline to be detected and an air compressor. The detected sewage pipeline is connected between the detected sewage inspection well and the sewage inspection well to be detected. The inner wall of a wellhead of the detected sewage inspection well is coated with a sealing medium. A wellhead air bag plugging device is arranged at the position coated with the sealing medium. An air bag plugging device for the pipeline to be detected is arranged at the end port of the sewage pipeline to be detected at the bottom of the detected sewage inspection well. An air bag plugging device for the detected pipeline is arranged at one end of the detected sewage pipeline at the bottom of the sewage inspection well to be detected.The plugging and choking detection outfit has the beneficial effects that 1, the plugging and choking detection outfit accords with the scientific ideal of low carbon and environment protection, water is not used, and the waste on the water and the hazard of emission on the environment can be reduced; 2, the test period is short, the effect of completing test work of more than one well section inhalf of a working day can be achieved, test data can be shown immediately so that the leakproofness is verified; and 3, the outfit is simple to operate, the test speed is high, and equipment has highsealing performance.

Description

technical field [0001] The invention relates to the technical field of municipal engineering construction, in particular to an air-tight detection device for blocking sewage pipelines and inspection wells by the full air bag method. Background technique [0002] At present, the gas-holding test technology is immature, and there are often phenomena such as test failures. After research, it is not all due to poor airtightness of inspection wells and pipelines, but many of them are caused by poor sealing of the gas-holding device. At present, the tightness test of sewage drainage pipeline is mainly closed water test. [0003] The current inspection specification does not have regulations on the airtightness inspection of inspection wells. In the standard CECS19:1990 "Concrete Drainage Pipeline Engineering Air-tight Inspection Standard", only the air-tight test and method of pipelines are stipulated. In actual construction, the connection between the pipeline and the inspection...

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Problems solved by technology

[0004] The closed water test has the following disadvantages in the application of municipal engineering: (1) the waste of water resources is serious, and the amount of water used for each closed water test is large; (2) the mechanical costs caused by water transportation and drainage are relatively high; (3) Environmental pollution, the municipal engineering work site is in the urban area, and the traffic volume is heavy. In the new project, most of the old pipelines cannot meet the requirements or are damaged during construction. After the test, the water often has no place to discharge, polluting the environment

(4) The period used for the closed water test is long, and it is necessary for the supervisor and the construction unit to guard the record for 24 hours

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