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Absorption ball reactor shutdown device for high-temperature gas-cooled reactor

A technology of high-temperature gas-cooled reactors and absorbing balls, applied in emergency protection devices, reduction of greenhouse gases, reactors, etc., can solve problems such as difficult disassembly and maintenance of ball valve heads and transmission rods, and achieve the effect of good adaptability and expanded adaptability

Active Publication Date: 2019-12-03
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the objectives of the present invention is to provide a high-temperature gas-cooled reactor absorption ball shutdown device, which solves the problem in the prior art that the ball valve head and transmission rod at the bottom of the storage tank are difficult to disassemble and repair

Method used

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  • Absorption ball reactor shutdown device for high-temperature gas-cooled reactor
  • Absorption ball reactor shutdown device for high-temperature gas-cooled reactor
  • Absorption ball reactor shutdown device for high-temperature gas-cooled reactor

Examples

Experimental program
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Effect test

Embodiment 1

[0036] See figure 1 , according to Embodiment 1 of the present invention, a high temperature gas-cooled reactor absorber shutdown device is provided, including a ball storage tank 8 , a support pipe 6 , a driving member and a transmission rod 7 . Among them, the ball storage tank 8 bottom is provided with a ball drop port; the bottom of the support tube 6 is connected to the top opening of the ball storage tank 8; the driving member is fixed on the top of the support tube 6; the transmission rod 7 passes through the support tube 6, and the transmission rod 7 first The end is connected to the output part, and the second end of the transmission rod 7 extends into the bottom of the ball storage tank 8, and the output part drives the transmission rod 7 to lift to open and close the ball drop port, and the rising of the driving part can drive the transmission rod to move to the outside of the ball storage tank.

[0037] This kind of high-temperature gas-cooled reactor absorption ba...

Embodiment 2

[0053] See figure 2 , the same as Embodiment 1 will not be repeated in this Embodiment 2. The difference between this Embodiment 2 and Embodiment 1 is that a suction port 702 can also be provided on the transmission rod 7, and the suction port 702 communicates with the material flow channel, and the suction port 702 is located below the injection port 704 , and a second barrier component is arranged between the suction port 702 and the discharge port 701 .

[0054] When the absorption ball 9 needs to be sucked, since the suction port 702 is connected to the material flow channel, it is only necessary to block the injection port 704, so that the absorption ball 9 inside the ball storage tank 8 can be sucked into the material flow channel , and can be sucked to the outside of the ball storage tank 8 through the material flow channel.

[0055] Wherein, the way of blocking the injection port 704 is not limited, for example, a door panel may be provided at the injection port 704,...

Embodiment 3

[0063] See image 3 , the same as Embodiment 1 will not be repeated in this Embodiment 3. The difference between this Embodiment 3 and Embodiment 1 is that the transmission rod 7 includes a second section 703 for setting electrodes, and the electrodes correspond to the storage tank 8 preset material level setting, and the electrode and ball storage tank 8 are connected through conductive parts.

[0064] image 3 , the second section 703 is located inside the ball storage tank 8 and corresponds to the bottom of the transmission rod 7 .

[0065] Wherein, the preset material level generally refers to the limit material level or the optimum material level that needs to be judged under a specific working condition. Taking the application of the ball storage tank 8 as an example, the preset material level refers to the highest material level, the lowest material level or the best material level corresponding to the ball falling process, or the lowest material level, the highest ma...

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Abstract

The invention relates to the field of nuclear reactor engineering and safety, and provides an absorption ball reactor shutdown device for a high-temperature gas-cooled reactor. The absorption ball reactor shutdown device for the high-temperature gas-cooled reactor comprises a ball storage tank, a supporting tube, a driving piece and a transmission rod, wherein a ball falling opening is formed in the bottom of the ball storage tank; the bottom of the supporting tube is connected with a top opening of the ball storage tank; the driving piece is fixed on the top of the supporting tube; the transmission rod penetrates in the supporting tube, a first end is connected to an output component of the driving piece, and a second end extends to the bottom of the ball storage tank; the output component drives the transmission rod to lift so as to open and close the ball falling opening; and the driving piece rises and can drive the transmission rod to move to the outside of the ball storage tank.According to the device, the transmission rod controls opening and closing of the ball falling opening of the bottom of the ball storage tank. The driving piece rises and can drive the transmission rod to move to the outside of the ball storage tank, then the transmission rod can be disassembled integrally along with the driving piece for overhauling, and the adaptability of the device to harsh environments is expanded. In addition, according to the device, a single bearing surface mounting mode from bottom to top is adopted, and the whole device has good adaptability to thermal expansion displacement.

Description

technical field [0001] The invention relates to the field of nuclear reactor engineering and safety, and provides an absorber shutdown device for a high-temperature gas-cooled reactor. Background technique [0002] The absorbing ball shutdown system is the second reactivity control system of the pebble bed high temperature gas-cooled reactor, which has the functions of assisting shutdown by falling balls and returning the balls by pneumatic transport for backup. [0003] The existing absorbing ball falling ball assisted shut down technical solution controls the opening and closing of the falling ball valve head at the bottom of the storage tank through the absorbing ball falling ball driving part, so as to control whether the absorbing ball falls into the falling ball channel of the reflective layer on the core side. However, since the driving part of the absorbing ball drop is arranged in the nozzle drawn from the head of the reactor pressure vessel, and the ball storage ta...

Claims

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Application Information

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IPC IPC(8): G21C9/02
CPCG21C9/02Y02E30/30
Inventor 张作义李天津刁兴中董玉杰吴宗鑫黄志勇
Owner TSINGHUA UNIV
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