Reactor pressure vessel top cover sealing ring groove crawling device and cleaning method
A pressure vessel and top cover sealing technology, which is applied to chemical instruments and methods, cleaning methods and utensils, transportation and packaging, etc., can solve the problems of insufficient cleaning and detection, and achieve the effect of eliminating blind spots
Pending Publication Date: 2021-03-30
CHINA NUCLEAR POWER OPERATION TECH +1
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Problems solved by technology
[0003] The object of the present invention is to provide a crawling device and cleaning method for the sealing ring groove of the top cover of the reactor pressure vessel, to solve the insufficient problem of cleaning and detection of the sealing ring groove of the existing pressure vessel top cover, to avoid interference with the top cover bracket, and to eliminate the cleaning blind area
Method used
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[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0023] like figure 1 As shown, a crawling device for the sealing ring groove of the top cover of a reactor pressure vessel includes a traveling mechanism 1, a vehicle body structure 2, a bottom positioning mechanism 3 and an arc track 4, wherein a walking mechanism is installed on the upper end of the vehicle body structure 2 of the frame structure Mechanism 1, a bottom positioning mechanism 3 is installed at the lower end of the car body structure 2; the part of the traveling mechanism 1 that protrudes from the car body structure 2 is provided with a driving part, and the traveling wheels on it are conical wheels. The linear speeds of the inner and outer ends are different, so that when the traveling mechanism 1 walks on the upper surface of the pressure vessel top cover, the driven wheel 5 set on the vehicle body structure 2 can alw...
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The invention relates to the technical field of nuclear power overhaul, and particularly discloses a reactor pressure vessel top cover sealing ring groove crawling device and a cleaning method. The reactor pressure vessel top cover sealing ring groove crawling device comprises a walking mechanism, a vehicle body structure, a bottom positioning mechanism and an arc-shaped rail, wherein the walkingmechanism is arranged at the upper end of the vehicle body mechanism, and the walking mechanism is placed on the upper surface of a pressure vessel top cover and can drive the vehicle body mechanism to be attached to the side wall of the outer circle of the pressure vessel top cover to move circumferentially; the bottom positioning mechanism is hinged to the lower end of the vehicle body structureand can be quickly locked with the vehicle body structure to be fixed below the lower end face of the pressure vessel top cover; and the arc-shaped rail is arranged at the end of the bottom positioning mechanism, and a cleaning assembly and an inspection assembly can reciprocate along the arc-shaped rail to clean and inspect the annular groove of a pressure vessel top cover sealing ring groove. The reactor pressure vessel top cover sealing ring groove crawling device is simple in structure, the cleaning work of the reactor pressure vessel top cover sealing ring groove can be effectively achieved, and the problems of cleaning dead zones and the like caused by interference of a top cover storage support can be eliminated.
Description
technical field [0001] The invention belongs to the technical field of nuclear power maintenance, and in particular relates to a crawling device and a cleaning method for a sealing ring groove of a top cover of a reactor pressure vessel. Background technique [0002] Reactor pressure vessel is an irreplaceable important equipment of nuclear power plant. In order to ensure its good enough sealing during operation, nuclear power plant must open the reactor pressure vessel and overhaul the sealing structure during refueling during overhaul. The sealing ring groove of the top cover is an important part of the pressure vessel sealing structure. After the reactor pressure vessel is opened, the sealing ring groove of the top cover must be cleaned and inspected. Remove boron crystals and residual silver and other foreign matter in the seal ring groove by cleaning, and check the ring groove after cleaning. At present, the cleaning of the sealing ring groove of the top cover of the p...
Claims
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Login to View More IPC IPC(8): B08B13/00B62D57/02
CPCB08B13/00B62D57/02Y02E30/30
Inventor 杜林宝刘涛杨斌郝庆军张斌张力胡卉桦
Owner CHINA NUCLEAR POWER OPERATION TECH