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Armored signal cable for self-powered neutron detector and preparation method thereof

A neutron detector and signal cable technology, which is applied in nuclear power generation, insulating cables, insulating conductors/cables, etc., can solve the problems of the length and dimensional accuracy of a single branch of insulation resistance, and the surface roughness cannot meet the needs of use. Easy to control, improve coaxiality, avoid contamination effect

Pending Publication Date: 2022-07-08
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to solve the problem that the insulation resistance, single length, dimensional accuracy, surface roughness, etc. For the problem of foreign imports, provide an armored signal cable for self-sufficient neutron detectors and its preparation method

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  • Armored signal cable for self-powered neutron detector and preparation method thereof

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Embodiment 1

[0055] A preparation method of an armored signal cable for a self-sufficient neutron detector, comprising the following steps:

[0056] S1. The casing should be an Inconel 600 alloy casing with a diameter of φ8mm, a wall thickness of 2mm and a length of 5m. Conductor signal core wire selection wire diameter is φ2.3mm Inconel 600 alloy wire. The surface of the casing and the conductor signal core wire is required to be smooth, free from cracks, burrs and other defects. The casing and conductor signal cores are cleaned and pretreated by a combination of chemical and physical methods. First, pickling (concentration of 5% HF and 15% HNO is used) 3 Mixture of HF:HNO 3 The volume ratio is 2:8), alkaline washing and neutralization (5% NaOH solution concentration) are carried out after the acid washing, and then rinsed with high-pressure deionized water. Scrub the conductor signal core wire until the gauze is no obvious black.

[0057] The composition and proportion of Inconel 600...

Embodiment 2

[0083] A preparation method of an armored signal cable for a self-sufficient neutron detector, comprising the following steps:

[0084] S1. Select an Inconel 600 alloy casing with a diameter of φ10mm, a wall thickness of 2mm and a length of 5m. Conductor signal core wire selection wire diameter is φ2.5mm Inconel 600 alloy wire. The surface of the casing and the conductor signal core wire is required to be smooth, free from cracks, burrs and other defects. The casing and conductor signal cores are cleaned and pretreated by a combination of chemical and physical methods. First, pickling (concentration of 5% HF and 15% HNO is used) 3 Mixture of HF:HNO 3 The volume ratio is 2:8), alkaline washing and neutralization (5% NaOH solution concentration) are carried out after the acid washing, and then rinsed with high-pressure deionized water. Scrub the conductor signal core wire until the gauze is no obvious black. The preparation method of Inconel 600 alloy sleeve and Inconel 600 ...

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Abstract

The invention discloses an armored signal cable for a self-powered neutron detector and a preparation method of the armored signal cable. The armored signal cable for the self-powered neutron detector comprises a sleeve, an insulating knob insulator and a conductor signal core wire, the insulating knob insulator wraps the outer side of the conductor signal core wire, and the sleeve sleeves the outer side of the insulating knob insulator; wherein the sleeve and the conductor signal core wire are made of Inconel 600 alloy, and the insulating knob insulator is made of high-purity electric melting MgO powder. The wire diameter of the armored signal cable is 1.00-1.50 mm, the surface roughness is less than or equal to Ra1.6 [mu] m, the room temperature insulation resistance is greater than 1.20 * 10 < 13 > omega.m, the 400 DEG C insulation resistance is greater than 2.50 * 10 < 8 > omega.m, the length of a single cable is 80-120 m, and the use requirements of the armored signal cable for the self-powered neutron detector in a high-temperature irradiation environment in a nuclear reactor are met.

Description

technical field [0001] The invention relates to the technical field of material preparation, in particular to an armored signal cable for a self-sufficient energy neutron detector and a preparation method thereof. Background technique [0002] Self-sufficient neutron detectors are the main detection elements for on-line monitoring of neutron fluence rate in nuclear reactors, and are used for the measurement of strong neutrons in the reactor. By generating the signal current, the online core power density and distribution are generated, thereby ensuring the safe and effective operation of the nuclear reactor. The armored signal cable is the key component of the self-sufficient neutron detector. The main structure is composed of a casing, an insulating layer, and a conductor signal core wire. Due to the high temperature and high pressure, irradiation and corrosion conditions of the core, the armored signal cable requires high insulation resistance and high temperature stabili...

Claims

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Application Information

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IPC IPC(8): H01B7/29H01B7/28H01B7/02H01B1/02H01B13/06C22C1/02C22C19/05C22F1/10C25F3/22
CPCH01B7/29H01B7/2806H01B7/28H01B1/02H01B7/02H01B13/065C22C19/058C22F1/10C25F3/22C22C1/023Y02E30/30
Inventor 王焱辉吕学伟潘时龙辛云涛游洋党杰胡丽文刘奇薄新维
Owner CHONGQING UNIV
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