A safety valve airtight test tool and test method

Abstract

The invention provides a safety valve airtightness test tool and a test method. A safety valve is provided with a U-shaped pipe, the airtightness test tool comprises a clamping member, a jacking discand a filler neck, the clamping member clamps the left half section of the U-shaped pipe, and one side, close to the right half section of the U-shaped pipe, of the clamping member is provided with ahorizontal clamping groove; the jacking disc is provided with a threaded nozzle protruding upwards, the opening of the right half section of the U-shaped pipe is sleeved with the jacking disc throughthe threaded nozzle, the two ends of the jacking disc are provided with a horizontal long edge and a horizontal short edge respectively, the long edge can be embedded into the clamping groove, and a gap is formed between the short edge and the clamping groove; the lower end of the filler neck is locked on the threaded nozzle of the jacking disc in a threaded mode, and the upper end of the filler neck is provided with an inner hole in sealed butt joint with the opening of the right half section of the U-shaped pipe. According to the safety valve airtightness test tool and the test method, the left half section of the U-shaped pipe of the valve is fixed through the clamping component, and sealing and clamping are achieved through cooperation of the jacking disc, the filler neck and the righthalf section of the U-shaped pipe.

Description

technical field [0001] The invention belongs to the technical field of airtightness test, and in particular relates to a safety valve airtightness test tool and a test method. Background technique [0002] The safety valve is widely used in the fluid pipeline system. It is a safety pressure relief protection device. When the medium pressure exceeds the specified value, the medium is automatically released to allow the pressure to return to the normal value, and then the safety valve is automatically closed. During the debugging and acceptance process of the safety valve, a certain pressure of gas needs to be introduced to test the air tightness to judge whether the valve is qualified. There are usually some elbows on the safety valve, especially those with no thread and thin wall. Among them, due to the irregular shape of the elbow, it is difficult to seal the existing test equipment, and air leakage often occurs, resulting in low test efficiency. It is necessary to ensure t...

AI Technical Summary

Problems solved by technology

During the debugging and acceptance process of the safety valve, a certain pressure of gas needs to be introduced to test the air tightness to judge whether the valve is qualified. There are usually some elbows on the safety valve, especially those with no thread and thin wall. Among them, due to the irregular shape of the elbow, it is difficult to seal the existing test equipment, and air leakage often occurs, resulting in low test efficiency. It is necessary to ensure the sealing and keep the elbow from deforming. Many factors need to be considered, so the non-threaded elbow Tubes are more difficult to seal

The existing tooling directly clamps and seals the elbow, which easily deforms the wall of the elbow or even scraps it. At the same time, the sealing effect is poor, the clamping is inconvenient, and the valve is easy to be scratched

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