Detection device for safety valve

Abstract

The invention relates to the field of mechanical detection and particularly discloses a detection device for a safety valve. A detection roller of the detection device can roll on a sealing surface ofthe safety valve. In the rolling process, marking liquid in the detection roller can go into water in deep grooves to mark the deep grooves. Meanwhile, absorbent cotton can absorb part of water and then can display the depth of the water in the deep grooves, and the depth of the deep grooves is reflected to some extent. Thus, through the detection device for the safety valve, position detection on the deep grooves in the sealing surface is achieved, and the portions to be cleaned can be determined rapidly.

Description

technical field [0001] The invention belongs to the field of mechanical detection, in particular to a detection device for safety valves. Background technique [0002] The safety valve is a special kind of valve. Its particularity is because the safety valve is different from other valves and only plays the role of switch, and more importantly, it plays the role of protecting the safety of the equipment. When the system pressure exceeds the specified value, the safety valve opens to discharge a part of the gas / fluid in the system into the atmosphere / pipeline, so that the system pressure does not exceed the allowable value, so as to ensure that the system does not cause accidents due to excessive pressure. Safety valves are often used in cranes and play an important control role in the control mechanism of the crane. After the safety valve is used for a long time, wear debris will be generated between the various mechanical structures, and the wear debris will easily enter t...

AI Technical Summary

Problems solved by technology

After long-term use of the safety valve, wear debris will be generated between the various mechanical structures, and the wear debris will easily enter the sealing surface of the safety valve. After the sealing surface is stressed, the wear debris will scratch the sealing surface

[0003] The mesh size of wear debris is generally small, and it is easy to adhere to the sealing surface. When the sealing surface is separated from the wear debris, the wear debris may also be difficult to be discharged, and it is easy to exist on the soft surface for a long time. When the detection of wear debris fails When grinding, the wear debris is easily retained on the sealing surface, and when rubbing again, it will scratch the hard surface and plow deeper and longer deep grooves on the soft surface. However, when the diameter of the wear debris is small, it is difficult to observe the wear debris with the naked eye. position, it is difficult to completely remove the wear debris, if the wear debris on the sealing surface is wiped directly, it will cause the wear debris to slide along the sealing surface, and cause secondary damage to the sealing surface

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