Underwater pneumatic pliers

Abstract

The invention belongs to maintenance and overhaul technologies for nuclear power station equipment and particularly discloses underwater pneumatic pliers. The underwater pneumatic pliers comprise a long connection rod, a pliers body angle adjusting part and a cylinder, and further comprise an adapter sleeve connected with the cylinder and pliers bodies connected with the adapter sleeve. The pliers bodies comprise the upper pliers body and the lower pliers body. The upper end of the upper pliers body is connected with the upper end of the lower pliers body through a shaft. An expansion rod is arranged on the cylinder and is capable of moving in the adapter sleeve in the axial direction, the end of the expansion rod is in shaft connection with one end of an adapter rod, and the other end of the adapter rod is in shaft connection with the lower end of the lower pliers body. According to the underwater pneumatic pliers, the cylinder and an air source are used as air feeding devices, and compression air is used as power so that air source power can be obtained conveniently; meanwhile, control equipment such as a control hand valve and a control air tube is used for achieving remote control. The underwater pneumatic pliers have the advantages of being clean and clear free of hydraulic oil leakage polluting a water pond and the like; compared with a pure machine tool, the underwater pneumatic pliers are small in size, low in weight, high in work efficiency and reliable in motion realization.

Description

technical field [0001] The invention belongs to nuclear power plant equipment maintenance and overhaul technology, and in particular relates to a pneumatic pliers used for remote foreign body removal and equipment maintenance of nuclear power plants. Background technique [0002] During the operation or maintenance of nuclear power plants, foreign objects occasionally fall into the reactor vessel, the bottom of the pool, the pipes or the inside of the vessel. These foreign objects may damage the fuel cladding and system components and should be removed. The location where the foreign matter falls may be underwater, in a high-radiation environment, inaccessible to personnel, or inconvenient to take out due to space constraints, and a device that can be remotely controlled to remove foreign matter is required. [0003] The treatment measures for this situation in the prior art are mainly to use salvage weights, underwater vacuum devices, etc. to remove foreign objects. [00...

AI Technical Summary

Problems solved by technology

[0004] Disadvantages of the salvage weight: the salvage weight looks like a weight

If the hydraulic technology solution is used, the oil source and power need to be configured separately, and there are defects such as the large volume of the hydraulic parts, the difficulty of maintenance, and the pollution of the pool in case of leakage.

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