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High-temperature gas cooled reactor absorption ball falling limiting device and pebble bed type high-temperature gas cooled reactor

A technology of high-temperature gas-cooled reactors and limit devices, which can be used in emergency protection devices, reduction of greenhouse gases, reactors, etc., and can solve problems such as high failure rate of travel switches

Active Publication Date: 2022-02-01
HUANENG NUCLEAR ENERGY TECH RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the travel switch failure rate is relatively high in the absorbing ball shutdown device of the high-temperature gas-cooled reactor in the prior art, thereby providing a high-temperature gas-cooled reactor absorbing ball falling ball limiting device Pebble bed high temperature gas-cooled reactor

Method used

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  • High-temperature gas cooled reactor absorption ball falling limiting device and pebble bed type high-temperature gas cooled reactor
  • High-temperature gas cooled reactor absorption ball falling limiting device and pebble bed type high-temperature gas cooled reactor
  • High-temperature gas cooled reactor absorption ball falling limiting device and pebble bed type high-temperature gas cooled reactor

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Embodiment 1

[0037] Such as Figure 1 to Figure 3 Shown is a high-temperature gas-cooled reactor absorbing ball fall-limiting device provided in this embodiment, which includes: two mounting assemblies, an elastic buffer disposed between the two mounting assemblies, and a moving electrode mounted on the mounting assemblies. In this embodiment, the compression washer 4 is selected as the elastic buffer, and the compression washer 4 is provided with a wave-shaped convex structure.

[0038]The axes of the two installation components coincide with each other, and the two installation components are detachably connected. The compression washer 4 is installed between two adjacent installation components, and the compression washer 4 is arranged coaxially with the installation components. The moving electrodes are respectively installed on the two sides of the two installation assemblies facing away from each other, that is, the side of the installation assembly on which the moving electrodes ar...

Embodiment 2

[0044] Such as Figure 4 and Figure 5 As shown, this embodiment provides a pebble bed type high-temperature gas-cooled reactor, which has the high-temperature gas-cooled reactor absorbing ball fall-limiting device described in Embodiment 1. The high-temperature gas-cooled reactor absorption ball falling ball limit device is arranged on the installation base 11 in the gas-cooled reactor. The installation base 11 is fixedly connected with a matching sleeve, and a plurality of threads are arranged on the outer wall of the installation sleeve along the circumferential interval. hole, and the positioning bolt is threaded through the matching sleeve and threaded into the threaded hole to securely connect the mounting sleeve and the matching sleeve. Such as Figure 4 As shown, when the lower limit part of the drop tube is in contact with the drop limit device of the high-temperature gas-cooled reactor absorbing ball, the drop tube is at the upper limit. side of the silo; such as ...

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Abstract

The invention relates to the technical field of high-temperature gas cooled reactors, in particular to a high-temperature gas cooled reactor absorption ball falling limiting device and a pebble bed type high-temperature gas cooled reactor. The falling limiting device for the absorption balls of the high-temperature gas cooled reactor comprises at least two mounting assemblies, wherein the axes of the multiple mounting assemblies coincide with one another, and the multiple mounting assemblies are detachably connected; an elastic buffer parts which are mounted between every two adjacent mounting assemblies, and the elastic buffer parts and the mounting assemblies are coaxially arranged; and movable electrodes which are installed on the two installation assemblies located at the two ends, and the faces, provided with the movable electrodes, of the installation assemblies are arranged away from the elastic buffering pieces. Signals for starting feeding and stopping feeding are controlled through the movable switch installed on the installation assembly, wherein the movable switch is embedded in the installation assembly and can better resist high temperature, high pressure and intense radiation. Meanwhile, the service life of the movable switch is far longer than that of a travel switch, so that the problem that the travel switch is inconvenient to replace is solved, and the risk of radiation leakage when the travel switch is replaced is avoided.

Description

technical field [0001] The invention relates to the technical field of high-temperature gas-cooled reactors, in particular to a high-temperature gas-cooled reactor absorption ball falling ball limiting device and a pebble bed type high-temperature gas-cooled reactor. Background technique [0002] The pebble bed high-temperature gas-cooled reactor is an advanced nuclear reactor with good inherent safety and can be used for high-efficiency power generation and high-temperature heating. It is one of the preferred reactor types in the fourth-generation nuclear energy system in the international nuclear energy field. The reactivity control system of the reactor adopts the method of lifting and inserting the drop tube to realize the drop of the absorbing ball, which can achieve a lower temperature shutdown condition. [0003] The high-temperature gas-cooled reactor absorbing ball drop device uses a screw nut to drive the drop tube to lift or insert down. Travel switches are instal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C19/20G21C9/02
CPCG21C19/202G21C9/02Y02E30/30
Inventor 张振鲁许杰孙惠敏张进伍龙燕孟剑
Owner HUANENG NUCLEAR ENERGY TECH RES INST CO LTD
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