Welding seam detection device based on low-pressure leak hunting

Abstract

The invention provides a welding seam detection device based on low-pressure leak hunting. The welding seam detection device comprises a detection support, a water storage tank and a water detection tank, a connection water pipe is connected between the water storage tank and the water detection tank, and a supporting base support and a workpiece supporting base are arranged in the water detectiontank in sequence; a liquid level sensor is further arranged in the water detection tank, the water storage tank and the workpiece supporting base are both connected with an air compressor through airpipes, and a first electromagnetic valve and a second electromagnetic valve are arranged among the water storage tank, the water detection tank and the air compressor respectively; two vertical guiderails are arranged above the detection support, a hydraulic cylinder is arranged at the tops of the two vertical guide rails, and a vertical extruding column is connected with the hydraulic cylinderthrough a connector. By using the low-pressure leak hunting principle, the welding seam detection device can conveniently and constantly detect welding seams of workpieces, is simple in structure andconvenient to operate, can rapidly and conveniently detect welding seam defects, is suitable for being operated by all types of workers, and is high in detection efficiency, high in practicability andworthy of popularization and application.

Description

technical field [0001] The invention relates to a weld seam detection device, in particular to a weld seam detection device based on low pressure leak detection. Background technique [0002] After the welding process, in order to ensure that the weld does not break during the production process, it is necessary to ensure the quality of the weld, so as to detect the defects of the weld (cracks, pores, inclusions, lack of penetration, lack of fusion). The traditional method of weld inspection is to shear the weld and put it on other equipment for tensile testing. This test method is time-consuming and labor-intensive, and there is no guarantee that the welding quality will pass the test under the same parameters. It may also be caused by personnel Improper operation or equipment failure causes equipment accidents and safety accidents. [0003] At present, there are mainly two types of weld detection devices: 1. Temperature sensor, which detects whether the workpiece is welde...

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Problems solved by technology

The traditional method of weld inspection is to shear the weld and put it on other equipment for tensile testing. This test method is time-consuming and labor-intensive, and there is no guarantee that the welding quality will pass the test under the same parameters. It may also be caused by personnel Equipment accidents and safety accidents caused by improper operation or equipment failure

[0003] At present, there are mainly two types of weld detection devices: 1. Temperature sensor, which detects whether the workpiece is welded according to the temperature of the workpiece. However, when the equipment fails, the temperature of the welded workpiece will drop, which will cause subsequent detection failures; 2. Laser displacement detection, but the workpiece needs to be positioned accurately. When the detection mechanism is installed on the workpiece transmission equipment, due to the low precision of the transmission equipment, the position of the workpiece in all directions needs to be positioned during detection. The positioning mechanism is more complicated, and the detection results are accurate Reliability often falls short of expectations

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