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Sub-line filling-pressing strip of triple shielded nuclear power cable

A technology of power cables and sub-wires, applied in the field of special power cables for nuclear power, which can solve hidden dangers in the normal operation of the system, but cannot solve problems such as electromagnetic shielding and interference of power cables

Inactive Publication Date: 2011-05-25
JINTAN JINLU CABLE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing ordinary power cables used for power transmission can no longer meet the requirements, especially the power cables used for frequency conversion circuits, the high-order harmonic interference that inevitably exists during use, when the current passes through the power cables, it will affect the adjacent The electrical and control system of the distribution line will cause interference, and in severe cases, it will bring hidden dangers to the normal operation of the entire system
Safety is very important in nuclear power construction. In the "Nuclear Safety Guidelines", HAD102 / 14 "Nuclear Power Plant Safety-Related Instrumentation and Control Systems" in Chapter 4.8 Electrical Interference emphasizes "the physical separation of signal cables and power cables", Ordinary power cables cannot meet the above requirements, and cannot solve the problem of electromagnetic shielding in the process of power cable transmission.

Method used

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  • Sub-line filling-pressing strip of triple shielded nuclear power cable
  • Sub-line filling-pressing strip of triple shielded nuclear power cable
  • Sub-line filling-pressing strip of triple shielded nuclear power cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: The sub-wire filling strip of the triple shielded nuclear power cable, such as figure 1 As shown, its cross-sectional shape is composed of an outer arc 71 and two inner arcs 72. The outer arc 71 is the same as the inner diameter of the second shielding layer 4, and the diameter of the two inner arcs 72 is the same as that of the sub-wire shielding layer. The outer diameters of 61 are the same, and the two inner arcs 72 are circumscribed and inscribed with the outer arc 71 .

[0015] image 3 It is a structural schematic diagram of the application of the present invention in a triple shielded nuclear power cable. The triple shielded nuclear power special power cable consists of an outer insulating sleeve 1, a first shielding layer 2, an inner insulating sleeve 3, a second shielding layer 4, The bus insulating mesh belt 5, the sub-wire 6 and the sub-wire filling bead 7 are composed of the sub-wire shielding layer 61, the sub-wire insulating mesh belt 62, t...

Embodiment 2

[0016] Embodiment 2: On the basis of Embodiment 1, engaging grooves 73 are provided on the arc surfaces of the outer arc 71 and the arc surfaces of the two inner arcs 72 .

Embodiment 3

[0017] Embodiment 3: On the basis of Embodiment 2, a deformation hole 74 is provided in the space enclosed by the outer arc 71 and the two inner arcs 72 .

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Abstract

The invention discloses a sub-line filling-pressing strip of a triple shielded nuclear power cable. The cross-section shape of the sub-line filling-pressing strip is formed by combining an external circular arc with two inner circular arcs; the diameter of the external circular arc is equal to the inner diameter of a second shielding layer; the diameters of the two inner circular arcs are equal to the outer diameter of a sub-line shielding layer; and two inner circular arcs are externally tangent, and are internally tangent with the external arc, thus the cross-sectional shape is matched with the distribution cross section of three sub-lines. When the sub-line filling-pressing strip is used for wrapping the three sub-lines, so that the filling-pressing strip of the three sub-lines and the three sub-lines are wrapped into a round section, so that the three sub-lines can be mutually arranged regularly, the sub-lines are prevented from being interleaved and wound with each other, the sub-line groups of the whole power cable and the sub-line filling-pressing strip are combined to obtain a regular round section, which is convenient for the combination of a second shielding layer sleeve and an inner insulating sleeve, and the combination of a first shielding layer sleeve and an outer insulating sleeve.

Description

Technical field: [0001] The invention relates to a nuclear power special power cable, in particular to a sub-wire filling strip in the nuclear power special power cable. Background technique: [0002] With the rapid development of the nuclear power industry, the demand for nuclear power output cables is increasing, and the requirements are getting higher and higher. At present, nuclear power cables at home and abroad have proposed "electromagnetic compatibility" without electromagnetic interference requirements. The existing ordinary power cables used for power transmission can no longer meet the requirements, especially the power cables used for frequency conversion circuits, the high-order harmonic interference that inevitably exists during use, when the current passes through the power cables, it will affect the adjacent The electrical and control system of the power distribution line will interfere, and in severe cases, it will bring hidden dangers to the normal operatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B9/02
Inventor 吴长全吴品
Owner JINTAN JINLU CABLE MATERIAL