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Nuclear power station reactor protection tube assembly position measuring tool

A technology for a nuclear power plant reactor and a measuring tool is applied in the field of measuring tools for the position of a nuclear power plant reactor protection tube assembly, which can solve problems such as on-site maintenance of space object interference, and achieve the effects of reducing the number of measurements, stabilizing coordination, and avoiding interference.

Pending Publication Date: 2022-04-15
JIANGSU NUCLEAR POWER CORP
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Problems solved by technology

[0010] The purpose of the present invention is to provide a position measurement tool for nuclear power plant reactor protection tube components, which solves the problem of interference with on-site maintenance space objects during the use of existing tools, improves measurement accuracy, shortens measurement time, and reduces personnel in high-temperature environments. Reduce the residence time and reduce the physical consumption of personnel

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  • Nuclear power station reactor protection tube assembly position measuring tool
  • Nuclear power station reactor protection tube assembly position measuring tool
  • Nuclear power station reactor protection tube assembly position measuring tool

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Embodiment Construction

[0046] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0047] Such as figure 1 As shown, the position measurement of the protection tube assembly, the main measurement points are as follows:

[0048] (1) А value, which is the distance from the flange surface of the hanging basket to the flange surface of the pressure vessel;

[0049] (2) В value, which is the distance from the flange of the protection tube assembly to the flange surface of the pressure vessel;

[0050] (3) Б value, which is the thickness of the shoulder flange of the protection tube assembly, including the upper and lower gaskets.

[0051] For the specific measurement positions of А, В and Б, see figure 1 , and then use the formula А-В-Б=Г to calculate the value of Г (the distance from the lower surface of the shoulder of the protection tube assembly to the surface of the flange of the hanging basket), where the acceptance crit...

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Abstract

The invention belongs to the field of nuclear power station reactor maintenance, and particularly relates to a nuclear power station reactor protection tube assembly position measuring tool which comprises a measuring tool body, a measuring pawl, a digital display measuring instrument and a vernier caliper. A sliding groove is formed in the middle position, corresponding to the vernier caliper, of the measuring tool body, the digital display measuring instrument is installed in the sliding groove of the measuring tool body, the measuring pawl is installed on the measuring tool body in a sliding mode, and the digital display measuring instrument is correspondingly connected with the measuring pawl. The problem that an existing tool interferes with an on-site overhaul space object in the using process is solved, the measurement accuracy is improved, the measurement time is shortened, the staying time of personnel in a high-temperature environment is shortened, and the physical consumption of the personnel is reduced.

Description

technical field [0001] The invention belongs to the field of nuclear power plant reactor maintenance, and in particular relates to a position measuring tool for a nuclear power plant reactor protection tube assembly. Background technique [0002] The first phase of Tianwan Nuclear Power Plant consists of two VVER-1000 units, and the reactor is a B-428 reactor. The reactor includes reactor pressure vessel, core basket, core coaming, protection tube assembly, fuel assembly, control rod assembly, upper assembly, protective steel structure, control rod drive mechanism and other components, wherein the protection tube assembly is a welded metal The structure, its main function is: the precise positioning and isolation of the fuel assembly head in height and on the core plane; the control rod assembly protection tube and the neutron-temperature measuring tube are installed to make the control rod assembly and neutron-temperature measurement The sensor is protected from the power ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B5/00
CPCG01B5/0011
Inventor 张建军曾振华易良川尤晓波赵亚明曹晔刘勇隋震高生华张宾
Owner JIANGSU NUCLEAR POWER CORP
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