Pipeline inner wall wiping and sampling device operated at single end

Abstract

The invention relates to a pipeline inner wall investigation and sampling device, in particular to a single-end operation pipeline inner wall wiping and sampling device, and solves the technical problem that sediments on the inner wall of a to-be-wiped and sampled pipeline are difficult to wipe and sample well under the condition that one end of the existing pipeline is difficult to reach or is a blind end. A single-end-operated pipeline inner wall wiping and sampling device comprises a supporting assembly, an elastic body, an operating mechanism and a driving mechanism. The operating mechanism comprises an inner push rod, a restraining assembly arranged on the inner push rod in a sleeving mode and a positioning assembly. The positioning assembly penetrates through the third positioning hole and the first positioning hole, and the elastic body is contracted into the containing cavity. Or the positioning assembly penetrates through the third positioning hole and the second positioning hole, and the elastic body is released into the sampling pipeline to be wiped. The dirt can be cleaned and the sample can be taken out only by operating at one end of the pipeline.

Description

technical field [0001] The invention relates to a sampling device for investigating the inner wall of a pipeline, in particular to a sampling device for wiping the inner wall of a pipeline with single-end operation. Background technique [0002] After a pipeline on an industrial installation has been in operation for a period of time, there are often deposits on the inner wall of the pipeline that need to be cleaned. In the nuclear industry, chemical industry or some special industries, it is often necessary to survey and sample the sediment in the pipeline, so as to understand the composition of the sediment and provide a basis for formulating the sediment treatment plan. Simple pipeline sampling or cleaning can be done manually; but when the inner diameter of the pipeline is large or very small, and the pipeline is relatively long, certain mechanical devices are required. For example, Chinese Patent 109985868A discloses the "cleaning method of oil pollution on the inner w...

AI Technical Summary

Problems solved by technology

"A compact and small pipeline inner wall cleaning device" disclosed in Chinese patent 107461566A and the "pipeline inner wall cleaning device" disclosed in Chinese patent 112893348A both use relatively complex large-scale mechanical equipment for pipeline cleaning

For this kind of wiping and sampling operations with limited space, it is difficult to achieve this purpose through simple modifications in the existing technology

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