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Transfer system and method for radioactive solid waste of nuclear power plant

A solid waste and radioactive technology, applied in radioactive purification, nuclear engineering, etc., can solve the problems of violent vibration of the pump body, time-consuming and labor-intensive, blockage, etc., and achieve the effect of smooth transportation, improved transfer efficiency, and not easy to deposit

Pending Publication Date: 2022-07-22
SANMEN NUCLEAR POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the process of implementing the above-mentioned technical solution, the inventors of the present application found that this technical solution has at least the following defects: after starting the solid waste delivery pump, the pump body rapidly vibrated violently accompanied by abnormal booming sound, and at the same time, the pump body exited from the pump body. In the flow sight glass, it can be observed that the liquid containing a large number of cavitation flows out and has a certain turbulent flow, and then the solid waste delivery pump is likely to be blocked, so that the radioactive solid waste cannot be transported normally
The dredging of the solid waste delivery pump is not only time-consuming and laborious; it will also cause the dredging personnel to passively receive radiation, which will affect the health of the dredging personnel

Method used

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  • Transfer system and method for radioactive solid waste of nuclear power plant
  • Transfer system and method for radioactive solid waste of nuclear power plant
  • Transfer system and method for radioactive solid waste of nuclear power plant

Examples

Experimental program
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Effect test

Embodiment 1

[0055] Example 1: as figure 1 As shown, a radioactive solid waste transfer system in a nuclear power plant includes a solid waste tank 1, a solid waste conveying pump 2, a water tank 4, a water supply valve 5, a second control valve 6-2, a third control valve 6-3 and a third control valve 6-3. A control valve 6-1. The pump inlet of the solid waste conveying pump 2 is connected to the first outlet of the solid waste tank 1 through the first pipe body 3-1, wherein the first outlet of the solid waste tank 1 is provided with a valve. The valve inlet of the water supply valve 5 is connected to the water outlet of the water tank 4 through the second pipe body 3-2, and the valve outlet of the water supply valve 5 is connected to the first pipe body 3-1 through the third pipe body 3-3 connect. The valve inlet of the second control valve 6-2 is connected to the pump outlet of the solid waste conveying pump 2 through the fourth pipe body 3-4, and the valve outlet of the second control...

Embodiment 2

[0064] Embodiment 2, a transfer system for radioactive solid waste in a nuclear power plant, differs from Embodiment 1 in that the transfer system further includes a stirring device connected to the first pipe body 3-1.

[0065] like figure 2 and image 3 As shown, the stirring device includes a housing 9-1, a first bearing 9-2, a second bearing 9-3, a stirring shaft 9-4, a stirring motor 9-5 and a stirring blade 9-6.

[0066] The casing 9-1 is provided with a casing cavity 9-1a and two cavity ports 9-1b communicating with the casing cavity 9-1a. The first pipe body 3-1 is formed by connecting a plurality of pipe sections. In this embodiment, a plurality of stirring devices can be provided, and each stirring device can be installed at the connection of any two adjacent pipe sections. The first port 9-1b of 1 is used to connect with the first pipe section, the second port 9-1b is used to connect with the second pipe section, and the two ports 9-1b can be arranged horizontall...

Embodiment 3

[0073] Embodiment 3: A method for transporting radioactive solid waste from a nuclear power plant, comprising the following steps

[0074] First, before the start-up stage: close the valve of the first outlet of the solid waste tank 1, the second control valve 6-2 and the third control valve 6-3, open the water supply valve 5 and the first control valve 6-1, and start Solid waste transfer pump 2. The first pipe body 3-1, the fourth pipe body 3-4, the sixth pipe body 3-6, the seventh pipe body 3-7 and the fifth pipe body 3-5 are cleaned with water, and the solid waste tank is cleaned at the same time. 1 Add a certain amount of water. After a certain period of time, the solid waste delivery pump 2, the water supply valve 5 and the first control valve 6-1 are closed.

[0075] Secondly, before the start-up stage, it also includes: starting the solid waste mixing pump 8; after a certain period of time, closing the solid waste mixing pump 8.

[0076] Specifically, the solid waste...

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Abstract

The invention relates to the technical field of radioactive solid waste treatment, in particular to a nuclear power plant radioactive solid waste transfer system and method. A nuclear power plant radioactive solid waste transfer system comprises a solid waste box. A pump inlet of the solid waste conveying pump is connected with a first outlet of the solid waste box through a first pipe body; a water tank; a valve inlet of the water supply valve is connected with a water outlet of the water tank through a second pipe body, and a valve outlet of the water supply valve is connected with the first pipe body through a third pipe body. A nuclear power plant radioactive solid waste transferring method comprises the following steps that in the starting stage, a valve and a first control valve of a first outlet of a solid waste box are closed, a water supply valve, a second control valve and a third control valve are opened, and a solid waste conveying pump is started. By arranging the water tank and the water supply valve, supplemental water can be continuously provided for the radioactive solid waste solution, and then the solid waste conveying pump can be prevented from being blocked.

Description

technical field [0001] The invention relates to the technical field of radioactive solid waste treatment, in particular to a system and method for transferring radioactive solid waste in a nuclear power plant. Background technique [0002] The main difference between a nuclear power plant and a general power plant is the source of heat. The nuclear power plant uses the huge energy generated by nuclear fission in the reactor to convert the water in the steam generator into high-temperature and high-pressure steam, thereby driving the steam turbine to generate electricity. Among them, nuclear fission produces a large amount of radioactivity while generating huge energy, and a large amount of radioactivity will form radioactive waste as it attaches to the medium, mainly including radioactive waste liquid, radioactive waste gas and radioactive solid waste. [0003] For the third-generation nuclear power, each unit is equipped with a radioactive solid waste treatment system. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21F9/28G21F9/00
CPCG21F9/28G21F9/008
Inventor 杨幸烨王雄黄钢辉
Owner SANMEN NUCLEAR POWER CO LTD