Three-shielding cable for nuclear power
A shielded cable, nuclear power technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of poor effect, high cable shielding performance and strength requirements, and achieve the effect of low attenuation, good shielding performance and high reliability
Inactive Publication Date: 2013-08-07
LIAONING JINHUAN CABLE
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Problems solved by technology
Due to the special application environment, the shielding performance and strength of the cable are required to be high. The existing shielded cable is not effective because it uses double shielding and does not use a middle shielding layer.
Method used
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[0012] The present invention is specifically described below in conjunction with accompanying drawing, as figure 1 As shown, the present invention includes an inner conductor 1, the inner conductor 1 is covered with a foamed insulating layer 2, the foamed insulating layer 2 is covered with an inner shielding layer 3, and the inner shielding layer 3 is covered with a middle shield layer 4, the outer shielding layer 5 is covered with the middle shielding layer 4;
[0013] The material of the inner conductor 1 is copper wire;
[0014] The material of the foam insulating layer 2 is SiO 3 ;
[0015] The material of the inner shielding layer 3 is copper;
[0016] The material of the middle shielding layer 4 is pure iron;
[0017] The material of the outer shielding layer 5 is stainless steel.
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The invention discloses a three-shielding cable for nuclear power. The three-shielding cable comprises an inner conductor and is characterized in that a foaming insulating layer is wrapped outside the inner conductor, an inner shielding layer is wrapped outside the foaming insulating layer, a middle shielding layer is wrapped outside the inner shielding layer, and an outer shielding layer is wrapped outside the middle shielding layer. The three-shielding cable has the advantages that the three-shielding cable is high-radiation-resistant, high-temperature-resistant, wear-resistant, oil-resistant, high in mechanical strength, high in reliability, good in shielding performance, low in attenuation and the like due to the fact that the pure-iron middle shielding layer is added.
Description
technical field [0001] The invention relates to cables, in particular to a shielded cable for nuclear power. Background technique [0002] Shielded cable products for nuclear power are used for external connection lines of instruments and internal connection lines of instruments in high-radiation areas inside nuclear power reactors. Due to the special application environment, the shielding performance and strength of the cable are required to be high. The existing shielded cable is not effective because it uses double shielding and does not use a middle shielding layer. Contents of the invention [0003] In order to solve the above technical problems, the purpose of the present invention is to provide a shielded cable with good shielding performance and mechanical properties, which can meet the special requirements of the external connection wires of instruments and the internal connection wires of instruments in high-radiation areas inside nuclear power reactors. The spe...
Claims
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IPC IPC(8): H01B7/17
Inventor 王吉斌单海龙王大明
Owner LIAONING JINHUAN CABLE