Reactor core nuclear measuring plug inner pin removal tool and removal method

A technology of pins and plugs, which is applied to the field of pin removal tools and removal in core nuclear testing plugs, can solve the problems of pin and socket hole and groove damage, withdrawal, and unreliable installation, so as to achieve convenient removal and wide application. Effect

Pending Publication Date: 2018-11-02
JIANGSU NUCLEAR POWER CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] According to the design, after the pins in the plug are welded with the signal cables on site, they need to be installed in the reserved holes of the plug. There is a small anti-drop card around the tail end of the pins to prevent the pins after installation from being in contact with the cabinet. After the side female jacks are docked, the pins are retracted, resulting in unreliable installation
With the increase of the time after the installation of the plug on the cabinet side, the performance of the pins decreases, and the pins need to be repaired or replaced.
[0005] During the working process, it was found that due to the limitation of the anti-dropping design, it was difficult for the pin to withdraw from the reserved hole. During the process of taking out the pin, the pin and the socket hole were often damaged.

Method used

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  • Reactor core nuclear measuring plug inner pin removal tool and removal method
  • Reactor core nuclear measuring plug inner pin removal tool and removal method
  • Reactor core nuclear measuring plug inner pin removal tool and removal method

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Embodiment Construction

[0025] A tool and method for extracting pins in the core verification plug of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0026] Such as Figure 1 to Figure 4 As shown, a tool for removing pins in the core verification plug of the present invention includes a push pin support 1 , a push pin guide tube 2 , a push pin 3 , a push pin support base 4 and a push pin anti-dropping clamp 5 .

[0027] The push pin 3 and the push pin anti-off clamp 5 are integral structures, which are formed by connecting two cylinders with different phase diameters. The diameter of the elongated cylinder forming the push pin 3 is d1, and the diameter of the thick and short cylinder forming the push pin anti-off clamp 5 is d2. In this embodiment, d1=1mm, d2=1.5mm.

[0028] The push pin supporting member 1 is formed by connecting two circular platforms, that is, the end surface of one circular platform with a smaller diameter ...

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Abstract

The invention belongs to the technical field of nuclear power station reactor core parameter measurement, and particularly relates to a reactor core nuclear measuring plug inner pin removal tool and aremoval method. The reactor core nuclear measuring plug inner pin removal tool of the invention comprises a push pin support member, a push pin guide tube, a push pin, a push pin support base and a push pin anti-drop clamping member, and can be used when the reactor core nuclear measuring plug inner pin is subjected to preventive and corrective maintenance; the pin removal process is quite convenient, and the pin itself and the mounting jacks are not damaged.

Description

technical field [0001] The invention belongs to the technical field of nuclear power plant reactor core parameter measurement, and in particular relates to a tool and a method for removing a pin in a core nuclear test plug. Background technique [0002] The core measurement neutron flux signal, thermal resistance temperature measurement signal, thermocouple temperature measurement signal and main pump working parameter signal of Tianwan Nuclear Power Station are collected at the side plug of the lower protection cabinet, and then sent to the corresponding processing module in the cabinet for signal processing. Receive, process and display. [0003] According to statistics, the number of lower protection cabinets is 4, the number of information processing cabinets is 2, and the number of plugs in each cabinet is 41. The number of pins in each plug ranges from 8 to 36 pins, with an average of about 20 pins. , the total number of pins on the cabinet side is about 5000. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R43/20
CPCH01R43/20
Inventor 徐东浦绍俭祁勋沈鼎刘堃孙勇眭海军马孝龙尹江辉袁屹昆陶明驹李袁鹏冷凌峰
Owner JIANGSU NUCLEAR POWER CORP
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