Method for treating thermocouple conduit leakage in in-core instrumentation system and welding bracket

A measurement system and processing method technology, applied in the field of nuclear power, can solve problems such as leakage of thermocouple conduits, and achieve the effects of improving stability, good molding, and reducing processing difficulty

Active Publication Date: 2018-02-06
CHINA GENERAL NUCLEAR POWER OPERATION +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Based on this, it is necessary to address the problem of how to make the leakage of the thermocouple conduit in the core measurement syste

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  • Method for treating thermocouple conduit leakage in in-core instrumentation system and welding bracket
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  • Method for treating thermocouple conduit leakage in in-core instrumentation system and welding bracket

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Embodiment Construction

[0034] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, the invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the invention, so the present invention is not limited by the specific implementation disclosed below.

[0035] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or i...

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Abstract

The invention relates to a method for treating a thermocouple conduit leakage in an in-core instrumentation system. The method comprises the following steps of cutting a second portion of the leakingthermocouple conduit, drilling a conduit seat to form a filling hole and forming a circular corner at the connecting joint between the side wall of the filling hole and the bottom of the filling hole,arranging a plug with a chamfer in the thermocouple conduit and sealing the thermocouple with the plug to make the circular corner and the chamfer form a groove, and carrying out welding and sealingon the groove. The above method effectively solves the problem of the leakage of the thermocouple conduit in the in-core instrumentation system. Besides, during the welding, the root of a welding seamis easily exposed to the viewing angle range of a welder, and a tungsten pole can overcome space obstacle to more easily reach the root of the welding seam so that the quality of the root of the welding seam is greatly improved. The invention also provides a welding bracket used for the above method, the welding bracket is used for placing an operator's hand to make the welding more stable, makethe controlled welding accuracy higher and ensure the welding quality.

Description

technical field [0001] The invention relates to the technical field of nuclear power, in particular to a treatment method for leakage of a thermocouple conduit in a core measurement system and a welding bracket. Background technique [0002] With the gradual shortage of global energy, in order to respond to energy conservation, environmental protection, and emission reduction, countries around the world are vigorously accelerating the development of nuclear power energy. However, with the development of nuclear power energy, the issue of nuclear leakage has become the focus of attention. During the production process of nuclear power plants, the thermocouple conduit in the core measurement system will have leakage problems. [0003] Since the gap between the thermocouple tubes in the core measurement system and the diameter of the thermocouple tube itself are extremely small, it is difficult for the welding torch to be aimed at the root of the weld seam, and the adjacent th...

Claims

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Application Information

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IPC IPC(8): B23K33/00B23K31/00
CPCB23K31/00B23K33/00
Inventor 陈英杰邓江勇冯兴旺吴小锋关娇梁元梦张燃余志超王斌张通
Owner CHINA GENERAL NUCLEAR POWER OPERATION
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