Auxiliary hoisting device for racks in the spent fuel pool of a million-kilowatt nuclear power plant
A technology for spent fuel pools and nuclear power plants, applied in the directions of transportation and packaging, load hanging elements, cleaning methods and utensils, etc., can solve problems such as parts falling to the bottom of the pool
Active Publication Date: 2020-01-10
GUANGDONG NUCLEAR POWER JOINT VENTURE +4
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Problems solved by technology
[0006] The object of the present invention is to provide an auxiliary hoisting device for the grid in the spent fuel pool of a million-kilowatt nuclear power plant, aiming at solving the problems of the connection and the problems of the auxiliary hoisting device for the grid in the spent fuel pool of a million-kilowatt nuclear power plant in the prior art. There is a problem of parts falling to the bottom of the pool during the disassembly process
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[0055] Further, see Figure 1-Figure 2 , as a specific embodiment of the grid auxiliary hoisting device in the spent fuel pool of a million-kilowatt nuclear power plant provided by the present invention, the mounting fixture 5 is a mounting piece with a third through hole, and the metal wire 3 runs through the third through hole , the outer diameter of the pin 4 is greater than the inner diameter of the third through hole. Specifically, the process of installing the metal wire 3 on the fixing member 5 is as follows: the metal wire 3 runs through the third through hole on the mounting piece, because the outer diameter of the pin 4 is greater than the inner diameter of the third through hole, and because the thinner end of the connecting shaft 2 The outer diameter is greater than the outer diameter of the pin 4, so it can be seen that the outer diameter of the connecting shaft 2 is also greater than the inner diameter of the third through hole; therefore, the metal wire 3 can mo...
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The invention discloses an auxiliary lifting device for a grid in a spent fuel pool in a million-kilowatt nuclear power plant, which includes a long rod body composed of more than two connecting rods, a connecting shaft for connecting adjacent connecting rods, and a connecting rod along the connecting rod. A first through hole arranged radially, a metal wire connected to the connecting shaft, a pin connected to the metal wire, and a mounting fixture provided on the connecting rod; the end of the connecting shaft away from the metal wire is provided with a third hole for the pin to penetrate. Two through holes. The installation fixture provided on the connecting rod installs the metal wire on the connecting rod. The two ends of the metal wire are connected to the connecting shaft and the pin respectively. Therefore, during the disassembly and assembly process of the long rod body, the pin and the metal wire are easy to fall off. Connected, the metal wire is installed on the installation fixture so that the pin will not fall into the spent fuel pool; thus, it can meet the requirements of the connection and disassembly process of the grid auxiliary hoisting device in the spent fuel pool of a million-kilowatt nuclear power plant. Some parts fell into the spent fuel pool.
Description
technical field [0001] The invention relates to the technical field of nuclear auxiliary cooling water for a mega-kilowatt nuclear power plant, in particular to an auxiliary hoisting device for a grid in a spent fuel pool of a mega-kilowatt nuclear power plant. Background technique [0002] Spent fuel is radiation-irradiated, used nuclear fuel produced by nuclear reactors in nuclear power plants. The nuclear fuel after the nuclear reactor reaction contains a large amount of radioactive elements, so it has a large amount of radioactivity. If it is not handled properly, it will seriously affect the environment and the health of people who come into contact with them. Therefore, the spent fuel after the nuclear reactor reaction of the nuclear power plant needs to be stored in the spent fuel pool for decades until its radioactivity is reduced enough to allow subsequent reprocessing of the spent fuel. With the increasing number of domestic nuclear power plants and the continuous...
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IPC IPC(8): B66C1/10B66C1/62B08B1/00
CPCB66C1/10B66C1/62B08B1/165
Inventor 刘荣刘省勇张文利张士朋蒲江刘健罗文广王登辉郭少虎陈军琦谢小明陈士强陈光毅邵红廖佳涛偶建磊赵登山李琪陈秋炀袁亮
Owner GUANGDONG NUCLEAR POWER JOINT VENTURE