Horizontal pipeline type boron concentration detection equipment of nuclear power plant

The technology of detection equipment and horizontal tube is applied in the field of boron concentration detection equipment, which can solve the problems of unsatisfactory and low accuracy of boron concentration, and achieve the effect of optimizing design, improving detection level and ensuring safety.

Inactive Publication Date: 2016-12-07
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to solve the problem that the accuracy of the boron concentration monitored by the boron concentration measurement system in the prior art is not high, which cannot meet the

Method used

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  • Horizontal pipeline type boron concentration detection equipment of nuclear power plant
  • Horizontal pipeline type boron concentration detection equipment of nuclear power plant
  • Horizontal pipeline type boron concentration detection equipment of nuclear power plant

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Experimental program
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Effect test

Embodiment 1

[0040] Nuclear power plant horizontal pipeline boron concentration detection equipment, such as figure 1 and figure 2 As shown, it includes a neutron source generating assembly arranged above the chemical volume pipeline for emitting neutrons, a neutron source detection assembly arranged below the chemical volume pipeline for detecting neutrons, wrapped outside the neutron source generating assembly so that The emitted neutrons enter the upper shielding assembly in the chemical containment pipeline, and the lower shielding assembly 7 wrapped outside the neutron source detection assembly makes the neutrons passing through the chemical containment pipeline enter the neutron source detection assembly.

[0041] In this embodiment, the neutron source in the neutron source generation assembly is located directly above the chemical volume pipeline, and the detector in the neutron source detection assembly is located directly below the chemical volume pipeline, and the neutron source...

Embodiment 2

[0048] The difference between this embodiment and Embodiment 1 is that this embodiment optimizes the specific structures of the neutron source generation assembly and the neutron source detection assembly, such as figure 2 , image 3 and Figure 4 As shown, the specific setting method is as follows:

[0049] The neutron source generating assembly is arranged in the upper shielding assembly, and the neutron source generating assembly consists of the neutron source mounting base 2, the neutron source 14 arranged at the bottom of the neutron source mounting base 2 near the chemical containment pipeline, and the The neutron source assembly cover 1 on the top of the neutron source mount 2 is composed. Wherein, the bottom of the neutron source mount 2 is provided with a V-shaped positioning block 18, and the neutron source 14 is fixed on the V-shaped positioning block 18, as Figure 7 shown.

[0050] The neutron source component cover 1 and the neutron source mounting base 2 ar...

Embodiment 3

[0062] The difference between this embodiment and Embodiment 1 and Embodiment 2 is that in this embodiment, the specific structure of the upper shielding assembly and the lower shielding assembly is optimized, and the specific setting method is as follows:

[0063] Both the upper shielding assembly and the lower shielding assembly 7 in this embodiment are made of polyethylene.

[0064] The upper shielding assembly is composed of more than two polyethylene shielding blocks 3 arranged overlappingly, and a positioning structure is also arranged between two adjacent polyethylene shielding blocks 3 . In this embodiment, the number of polyethylene shielding blocks 3 in the upper shielding assembly is three, and the three polyethylene shielding blocks 3 and the shell are fixed as a whole by connecting rods and M8 bolts, such as figure 2 shown.

[0065] The lower shielding assembly 7 is composed of a housing and a polyethylene shielding block arranged above the housing. The polyethy...

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Abstract

The invention discloses horizontal pipeline type boron concentration detection equipment of a nuclear power plant. By the aid of the horizontal pipeline type boron concentration detection equipment, problems of low accuracy of the boron concentration monitored by boron concentration measurement systems in the prior art and incapability of meeting requirements on controlling the boron content of primary water of reactors in real time and guaranteeing the operation safety of the reactors mainly can be solved. The horizontal pipeline type boron concentration detection equipment comprises a neutron source generating assembly, a neutron source detecting assembly, an upper shielding assembly and a lower shielding assembly. The neutron source generating assembly is arranged above a chemical volumetric pipeline and is used for emitting neutrons, the neutron source detecting assembly is arranged below the chemical volumetric pipeline and is used for detecting the neutrons, the upper shielding assembly wraps the neutron source generating assembly to feed the neutrons emitted by the neutron source generating assembly into the chemical volumetric pipeline, and the lower shielding assembly wraps the neutron source detecting assembly to feed the neutrons in the chemical volumetric pipeline into the neutron source detecting assembly. The horizontal pipeline type boron concentration detection equipment has the advantages of safety, high detection accuracy, simple structure, convenience in mounting and the like.

Description

technical field [0001] The invention relates to a boron concentration detection device, in particular to a nuclear power plant horizontal pipeline type boron concentration detection device. Background technique [0002] The moderator and coolant of nuclear power plant pressurized water reactor are boron-containing ( 10 B) in aqueous solution. Boron, as a neutron poison, its main function is to control the reactivity of the core, flatten the power distribution, increase the depth of burnup, and improve the economy of nuclear power plant operation; on the other hand, the operation of nuclear power plants must prevent accidental dilution of boron concentration Unexpected increase in power ensures safe operation of the fuel. For this reason, it is necessary to accurately measure the boron concentration in the primary cooling water of the reactor on-line, so as to control the boron content in the primary water of the reactor in real time and ensure the safe operation of the rea...

Claims

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Application Information

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IPC IPC(8): G21C17/022G01N23/09
CPCG01N23/09G01N2223/04G01N2223/106G21C17/022Y02E30/30
Inventor 王红波邓圣杨泰波张义东邓朝平曾碧仙崔璨魏东
Owner NUCLEAR POWER INSTITUTE OF CHINA
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