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Pneumatic absorbing piling apparatus for high-temperature air-cooled reactor

A technology of high-temperature air cooling and absorption balls, which is applied in the control of nuclear reactions, reduction of greenhouse gases, climate sustainability, etc., and can solve the problems that the shutdown function of the control rod device or the absorption ball shutdown device cannot be realized, and the safety of the reactor is endangered. , to achieve the effect of avoiding simultaneous failure, easy maintenance and repair, and less moving parts

Active Publication Date: 2005-02-23
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the event of a reactor power outage accident and mechanical failures such as sticking of the control rod device, the shutdown function of the control rod device or the absorbing ball shutdown device cannot be realized, which seriously endangers the safety of the reactor.

Method used

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  • Pneumatic absorbing piling apparatus for high-temperature air-cooled reactor

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Embodiment Construction

[0010] The principle and structure of the present invention will be further described in detail below in conjunction with accompanying drawing 1 .

[0011] The present invention provides a pneumatic absorption ball shutdown device (as shown in Fig. 1 ) applied to a high-temperature gas-cooled reactor. The device mainly includes a reflecting layer absorbing ball channel 3, a ball storage tank 5, a valve head 4 arranged at the lower part of the ball storage tank, a valve stem 6 connected with the valve head, a spring box 8, a high-pressure gas tank 9, a low-pressure gas tank 10 and A ball delivery pipe 13 with an air inlet 1 arranged between the ball storage tank and the reflective layer absorbing ball channel; the reflective layer absorbing ball channel, the ball storage tank, the valve head and the ball transport pipe are arranged in the reactor pressure vessel 2. Inside; the high-pressure gas tank 9 is connected to the spring case through a pipeline and a balance cut-off valv...

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Abstract

A pneumatic absorbing ball is used to stop HTGR type reactor. It consists of a reflective layer ball-absorbing channel, a ball-storing tank, a valve head, a valve rod, a spring casing, a high pressure gas tank, a low pressure gas tank, and a ball-conveying pipe between the ball-storing tank and the reflective layer ball-absorbing channel. It does not need to be driven by electric power, and can be used repeatedly, stably and efficiently. It can also be used to convey other articles in regular shapes pneumatically.

Description

technical field [0001] The invention relates to a second shutdown device for a high-temperature gas-cooled reactor, in particular to a pneumatic absorption ball shutdown device, which belongs to the technical field of nuclear reactor engineering and safety. Background technique [0002] In the history of the development of high-temperature gas-cooled reactor technology, several forms of second shutdown devices have been tested or applied: In the upper reflector layer of the Peach Bottom reactor in the United States, a safety device with absorbing rods is installed. The fuse, when the temperature exceeds the set value, the fuse melts and the absorbing rods fall into the core. In the Fort St.Vrain reactor in the United States, boron carbide absorbing balls with a diameter of 12.6mm can enter the core through cylindrical pipes. On the German thorium high-temperature gas-cooled pebble bed reactor (THTR-300), the method of sprinkling boron carbide absorbing balls with a diameter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C9/02
CPCY02E30/39Y02E30/30
Inventor 周惠忠黄志勇刁兴中
Owner TSINGHUA UNIV