A welding seam pressure testing device and using method thereof

Abstract

The invention relates to a welded-seam pressure test device and an application method thereof. The welded-seam pressure test device comprises a body piece, a hydraulic assembly arranged inside the body piece, two rubber seal rings arranged on the body piece in a sleeving mode and a pressure test tube assembly arranged on the body piece. The two rubber seal rings are arranged in a spaced mode. The hydraulic assembly comprises a cylinder, a piston rod and hydraulic oil arranged in the cylinder; the cylinder is connected to an external-connection hydraulic pump through a first tube; one end of the piston rod is arranged in the cylinder, and the other end of the piston rod extends out of the body piece and can reciprocate in the cylinder; the hydraulic assembly is fixedly installed inside the body piece through pressing flanges arranged on the two sides of the hydraulic assembly; the pressure test tube assembly is communicated with the inside of the body piece, and comprises a pressure test hole and a decompression hole formed in the body piece. The welded-seam pressure test device has the advantages that the structure is simple, design is reasonable, the performance is safe and reliable, the detection period is short, operation is convenient, the detection accuracy is high, and detection cost is effectively saved; good applicability is achieved.

Description

technical field [0001] The invention relates to the technical field of weld quality inspection, in particular to a weld pressure test device and a method for using the same. The pressure test device can perform pressure test on welds of pipeline flanges and pipe fittings to ensure welding quality. Background technique [0002] For the welds that appear in the pipeline, the quality of the welding has an important impact on the overall use of the pipeline. Therefore, for special-purpose pipelines, strict inspections of the welds are required to prevent potential safety hazards; Common weld inspection methods in the prior art include non-destructive testing, hydrostatic testing or air pressure testing. However, the above-mentioned testing methods have disadvantages such as complicated operation, high testing cost, long testing period, and the need for professionals to operate. Therefore, it is of great significance to study a welding seam pressure test device with simple struct...

AI Technical Summary

Problems solved by technology

[0002] For the welds that appear in the pipeline, the quality of the welding has an important impact on the overall use of the pipeline. Therefore, for special-purpose pipelines, strict inspections of the welds are required to prevent potential safety hazards; Common welding seam inspection methods in the prior art include non-destructive testing, hydraulic test or air pressure test. However, the above-mentioned inspection methods have defects such as complicated operation, high inspection cost, long inspection cycle, and the need for professionals to operate.

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