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Particle suction device and method

A suction device and particle technology, which are applied in the field of high-temperature gas-cooled reactors and pneumatic conveying of bulk particles, to achieve the effects of reducing the suction dead zone, good economy, and flexible on-site operation.

Active Publication Date: 2020-12-29
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, when the reactor is shut down for maintenance, the top cover of the reactor pressure vessel is a restricted work area with a certain radioactive dose rate, so it is not suitable for manual long-term operation to export the absorbing ball

Method used

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  • Particle suction device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The chamber where the granular material 10 is located is a low-density gas environment, and the granular material 10 is placed in the chamber statically before the particle suction device is started. The atmosphere isolation unit 3 can be detachably buckled on the nozzle 1201 of the reactor pressure vessel 12 to isolate the nozzle 1201 . Moreover, before the operation of the particle suction device, the air in the pipeline is exhausted through the vacuum operation unit to reduce the interference of the air on the reactor.

[0045] Such as figure 1 As shown, the gas guiding component communicates with the suction component to form a circulation path.

[0046] Specifically, the gas guide assembly includes an air flow channel 2 (the air flow channel 2 is the internal channel of the illustrated pipe, and the housing of the air flow channel 2 described below can be understood as the illustrated pipe) and a gas flow channel for isolating from the following atmosphere The ga...

specific Embodiment approach

[0071] The atmosphere isolation unit 3 is covered by the nozzle 1201 of the reactor pressure vessel 12 to prevent helium and potentially radioactive substances in the reactor pressure vessel 12 from leaking from the nozzle 1201 . Both the shell of the suction channel 1 and the shell of the gas flow channel 2 extend out of the reactor pressure vessel 12 along this nozzle 1201 .

[0072] The atmosphere isolation unit 3 can be set as an isolation cover, an isolation tank, etc.; wherein, the isolation cover can be a cover formed of a flexible material and can be detachably fixed to the nozzle 1201, and the isolation tank can be a tank body formed of a hard material such as metal and It is connected to the nozzle 1201 through a flange, which is convenient for disassembly and assembly.

[0073] Further, the atmosphere isolation unit 3 is provided with a flexible connection part 301, and the second end of the housing of the suction channel 1 protrudes out of the atmosphere isolation ...

Embodiment approach

[0078] The shell of the suction channel 1 and the shell of the gas flow channel 2 are connected at the same nozzle 1201, which solves the problem of limited installation space on the nozzle 1201 of the reactor pressure vessel.

[0079] Furthermore, the housing of the air flow channel 2 is sheathed outside the housing of the suction channel 1, which can not only ensure the flow size of the suction channel 1, but also save the overall installation space. In addition, the shell of the suction channel 1 can also be sleeved outside the shell of the air flow channel 2 .

[0080] In the following, further description will be given by taking the casing of the air flow channel 2 sleeved outside the casing of the suction channel 1 as an example.

[0081] The housing of the air flow channel 2 is provided with a first opening, and the suction port 101 of the suction channel 1 extends out of the first opening. The first opening is not lower than the surface of the pile of granular materia...

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PUM

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Abstract

The invention relates to the technical field of pneumatic conveying of dispersed particles, and provides a particle suction device and method. The particle suction device comprises a gas flow guide assembly, an atmosphere isolation unit and a suction assembly, wherein the gas flow guide assembly comprises a gas flow channel; the first end of the gas flow channel communicates with a cavity where particles are located; the cavity is located in a reactor pressure vessel; the atmosphere isolation unit is used for isolating the reactor pressure vessel from the external environment and is provided with a gas inlet; the gas inlet communicates with the gas flow channel; gas flow is introduced into the cavity through the gas inlet; the suction assembly comprises a suction channel and power equipment; a suction opening is formed in the first end of the suction channel, and is not higher than the surface of a particle material pile; the second end of the suction channel is connected to the powerequipment; and a particle material is entrained by the gas and solids out of the cavity. According to the particle suction device and method provided by the invention, the problem that coarse particles accumulated in the cavity are guided out of the reactor pressure vessel is solved, and the device is simple in structure and low in running cost.

Description

technical field [0001] The invention relates to the technical field of pneumatic conveying of bulk particles, in particular to the field of high-temperature gas-cooled reactors, and relates to a particle suction device and method. Background technique [0002] The application of pneumatic conveying technology has a history of hundreds of years. Traditional pneumatic conveying technologies (such as grain conveying, coal powder conveying, etc.) usually use air as the gas medium. With the development of high-tech, such as high-temperature gas-cooled reactors, controlled nuclear fusion tokamak devices, etc., there are application requirements for the delivery of large particles of asphyxiating gas without oxygen to achieve specific functions. [0003] Take the high-temperature gas-cooled reactor technology as an example. The high-temperature gas-cooled reactor is a graphite-moderated and helium-cooled reactor. Among them, the absorbing ball shutdown system and the fuel loading...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C19/12G21C19/32B65G53/24
CPCB65G53/24G21C19/12G21C19/32Y02E30/30
Inventor 李天津刁兴中张作义董玉杰
Owner TSINGHUA UNIV