CN102074299A - Triple shielding electric cable special for nuclear power - Google Patents

Triple shielding electric cable special for nuclear power Download PDF

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Publication number
CN102074299A
CN102074299A CN2010106209544A CN201010620954A CN102074299A CN 102074299 A CN102074299 A CN 102074299A CN 2010106209544 A CN2010106209544 A CN 2010106209544A CN 201010620954 A CN201010620954 A CN 201010620954A CN 102074299 A CN102074299 A CN 102074299A
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CN
China
Prior art keywords
sub
line
screen
shielding layer
nuclear power
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Pending
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CN2010106209544A
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Chinese (zh)
Inventor
吴长全
吴品
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JINTAN JINLU CABLE MATERIAL CO Ltd
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JINTAN JINLU CABLE MATERIAL CO Ltd
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Application filed by JINTAN JINLU CABLE MATERIAL CO Ltd filed Critical JINTAN JINLU CABLE MATERIAL CO Ltd
Priority to CN2010106209544A priority Critical patent/CN102074299A/en
Publication of CN102074299A publication Critical patent/CN102074299A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a triple shielding electric cable special for nuclear power. The cable consists of an outer insulating sleeve, a first shielding layer, an inner insulating sleeve, a second shielding layer, a bus insulating mesh belt, sub-lines and sub-line filling pressing strips, wherein each sub-line consists of a sub-line shielding layer, a sub-line insulating mesh belt, a sub-line sheath and a wire core; and the sub-line sheath, the sub-line insulating mesh belt and the sub-line shielding layer are arranged outside the wire core in turn. The three wire cores are wrapped by the sub-line sheaths, the sub-line insulating mesh belts and the sub-line shielding layers respectively, the three sub-lines are filled and pressed by the sub-line filling pressing strips and are firmly glued to form the cable, and each wire core is shielded by three layers of metal, so that external electric field and magnetic field cannot interfere the electric cable in the electric power transmission process, an electromagnetic field produced by the electric cable is also shielded, and an electric and control system adjacent to a distribution circuit cannot be interfered; and the electric cable has a special arrangement structure, so that shaft voltage produced in the operation process of an electric appliance in a frequency-variable circuit is reduced, and the using safety of the electric appliance is protected.

Description

A kind of nuclear power special electric power cable of triple shieldings
Technical field:
The present invention relates to a kind of power cable, relate in particular to the power cable of used in nuclear power station.
Background technology:
Along with the fast development of nuclear power industry, increasing to the demand of nuclear power output cable, require also more and more highlyer, at present, the no electromagnetic interference requirement of " electromagnetic compatibility " the nuclear power power cable is proposed both at home and abroad.Have now and can not meet the demands as the used plain edition power cable of transferring electric power, power cable especially for the frequency conversion loop, the in use inevitable high order harmonic component that exists is disturbed, when electric current passes through power cable, can disturb electric the generation with control system of contiguous distribution line, the serious normal operation of whole system of also can giving brings hidden danger.Fail safe is vital in the nuclear power construction, emphasize " physical segregation of signal cable and power cable " in HAD102/14 in " nuclear safety guide rule " " relevant instrument of npp safety and control system " the 4.8 electrical Interference chapters and sections, and the plain edition power cable can not satisfy above-mentioned requirements, can not solve the electromagnetic shielding problem in the power cable transmission of electricity process.
Summary of the invention:
The nuclear power special electric power cable that the purpose of this invention is to provide a kind of triple shieldings, it can satisfy " electromagnetic compatibility (EMC) " and nuclear power " function isolation " requirement, can meet environmental protection (EM) requirement again, cable profile rounding.
The technical scheme that the present invention takes is:
The nuclear power special electric power cable of described a kind of triple shieldings, it is characterized in that: it is by the outer layer insulation cover, first screen, the primary insulation cover, the secondary shielding layer, the insulated bus guipure, sub-line and sub-line are filled press strip and are formed, described sub-line is by sub-line screen, sub-line insulation guipure, sub-line sheath and wire stylet are formed, outside wire stylet, be provided with sub-line sheath successively, sub-line insulation guipure and sub-line screen, the cylindrical of the sub-line screen of three root lines is in contact with one another, the center of three root lines is the equilateral triangle setting, three root lines filling press strip is arranged on three root lines and contacts place, formed space, make three root lines and three root lines fill press strip and form circular cross-section, and block by insulated bus guipure net, outside the insulated bus guipure, be provided with the secondary shielding layer successively, the primary insulation cover, first screen and outer layer insulation cover.
Further, the cross section of described wire stylet is by the circular cross-section of copper cash Shu Zucheng.
Further, when the area of section of wire stylet during greater than 35 square millimeters, described sub-line screen is the tubular body that copper sheet material rolls; When the area of section of wire stylet during less than 35 square millimeters, described sub-line screen is the tubular body that copper wire is woven into.
Further, first screen and secondary shielding layer are color steel and roll the tubular body that forms.
Further, the cross sectional shape that described sub-line is filled press strip is combined by an external arc and two interior circular arcs, and external arc is identical with the internal diameter of secondary shielding layer, and the diameter of two interior circular arcs is identical with the external diameter of sub-line screen, two interior circular arcs are circumscribed, and with the external arc inscribe.
Further, the area of section of sub-line screen is 12%~15% of a wire stylet area of section.
In the present invention, described outer layer insulation cover, primary insulation cover and sub-line sheath are flame retardant rubber, and it is flame-proof filling material that sub-line is filled press strip, and insulated bus guipure and sub-line insulation guipure are fiberglass braided isometrical guipure.
In the present invention, because three wire stylets are respectively by sub-line sheath, sub-line insulation guipure and sub-line screen wrap up, three root lines are tamped after insulated bus guipure parcel by three root lines filling press strip, again through the secondary shielding layer, the primary insulation cover, the parcel of first screen and outer layer insulation cover is compound, not only make three root lines compose cable securely, and per share wire stylet is all through three road metallic shields, therefore, power cable can not disturbed in electric field and magnetic field extraneous in the electric power course of conveying, the power cable also conductively-closed that generates an electromagnetic field, can not spread, can electric and control system generation interference to contiguous distribution line.As the electric energy transmitting cable of nuclear power, it can not only eliminate high order harmonic component interference to external world preferably, and its specific arrangement structure, has reduced the shaft voltage that electrical appliance is in operation and produces in the frequency conversion loop, has protected the safety of electrical appliance practicality.
Description of drawings:
Fig. 1 is a structural representation of the present invention;
Fig. 2 fills the structural representation of press strip for the sub-line among the present invention;
Among the figure: 1-outer layer insulation cover; 2-first screen; 3-primary insulation cover; 4-secondary shielding layer;
5-insulated bus guipure; 6-line; 61-line screen; 62-line insulation guipure; 63-line sheath;
The 64-wire stylet; 7-line is filled press strip; The 71-external arc; Circular arc in the 72-.
Embodiment:
A kind of nuclear power special electric power cable of triple shieldings, as Fig. 1, shown in Figure 2, it is by outer layer insulation cover 1, first screen 2, primary insulation cover 3, secondary shielding layer 4, insulated bus guipure 5, sub-line 6 and sub-line are filled press strip 7 and are formed, described sub-line 6 is by sub-line screen 61, sub-line insulation guipure 62, sub-line sheath 63 and wire stylet 64 are formed, outside wire stylet 64, be provided with sub-line sheath 63 successively, sub-line insulation guipure 62 and sub-line screen 61, the cylindrical of three root lines 6 is in contact with one another, their center is the equilateral triangle setting, three root lines are filled press strip 7 and are arranged on the formed space of three root lines, 6 contacts, make three root lines 6 and three root lines fill press strip 7 and form circular cross-section, and block by insulated bus guipure 5 nets, outside insulated bus guipure 5, be provided with secondary shielding layer 4 successively, primary insulation cover 3, first screen 2 and outer layer insulation cover 1; Described wire stylet 64 is circular copper cash bundle, and the sectional area of wire stylet 64 is 22 square millimeters, and the tubular body that sub-line screen 61 rolls for copper sheet material, the sectional area of sub-line screen 61 are wire stylet 64 sectional areas 12%; It is that 0.4 millimeter color steel rolls the tubular body that forms that first screen 2 and secondary shielding layer 4 are thickness; It is flame-proof filling material that described sub-line is filled press strip 7, and its cross sectional shape is combined by an external arc 71 and two interior circular arcs 72, and external arc 71 is identical with the internal diameter of secondary shielding layer 4, and the diameter of two interior circular arcs 72 is identical with the external diameter of sub-line screen 61; Two interior circular arc 72 circumscribed backs all with external arc 71 inscribes, described outer layer insulation cover 1, primary insulation overlap 3 and sub-line sheath 63 be fire retardant insulating rubber, insulated bus guipure 5 and the sub-line guipure 62 that insulate is fiberglass braided isometrical guipure.

Claims (6)

1. the nuclear power special electric power cable of triple shieldings, it is characterized in that: it is by outer layer insulation cover (1), first screen (2), primary insulation cover (3), secondary shielding layer (4), insulated bus guipure (5), sub-line (6) and sub-line are filled press strip (7) and are formed, described sub-line (6) is by sub-line screen (61), sub-line insulation guipure (62), sub-line sheath (63) and wire stylet (64) are formed, outside wire stylet (64), be provided with sub-line sheath (63) successively, sub-line insulation guipure (62) and sub-line screen (61), the cylindrical of the sub-line screen (61) of three root lines (6) is in contact with one another, the center of three root lines (6) is the equilateral triangle setting, three root lines are filled press strip (7) and are arranged on place, the formed space of three root lines (6) contact, make three root lines (6) and three root lines fill press strip (7) and form circular cross-section, and block by insulated bus guipure (5) net, outside insulated bus guipure (5), be provided with secondary shielding layer (4) successively, primary insulation cover (3), first screen (2) and outer layer insulation cover (1).
2. according to the nuclear power special electric power cable of the described triple shieldings of claim 1, it is characterized in that: the cross section of described wire stylet (64) is by the circular cross-section of copper cash Shu Zucheng.
3. according to the nuclear power special electric power cable of the described triple shieldings of claim 1, it is characterized in that: when the area of section of wire stylet (64) during greater than 35 square millimeters, the tubular body that described sub-line screen (61) rolls for copper sheet material; When the area of section of wire stylet (64) during less than 35 square millimeters, the tubular body that described sub-line screen (61) is woven into for copper wire.
4. according to the nuclear power special electric power cable of the described triple shieldings of claim 1, it is characterized in that: first screen (2) and secondary shielding layer (4) are color steel and roll the tubular body that forms.
5. according to the nuclear power special electric power cable of the described triple shieldings of claim 1, it is characterized in that: the cross sectional shape that described sub-line is filled press strip (7) is combined by an external arc (71) and two interior circular arcs (72), external arc (71) is identical with the internal diameter of secondary shielding layer (4), the diameter of two interior circular arcs (72) is identical with the external diameter of sub-line screen (61), two interior circular arcs (72) are circumscribed, and with external arc (71) inscribe.
6. according to the nuclear power special electric power cable of the described triple shieldings of claim 1, it is characterized in that: the area of section of sub-line screen (61) is 12%~15% of wire stylet (a 64) area of section.
CN2010106209544A 2010-12-29 2010-12-29 Triple shielding electric cable special for nuclear power Pending CN102074299A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010106209544A CN102074299A (en) 2010-12-29 2010-12-29 Triple shielding electric cable special for nuclear power

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Application Number Priority Date Filing Date Title
CN2010106209544A CN102074299A (en) 2010-12-29 2010-12-29 Triple shielding electric cable special for nuclear power

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CN102074299A true CN102074299A (en) 2011-05-25

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103871661A (en) * 2014-02-24 2014-06-18 安徽华联电缆集团有限公司 Power cable special for securely attached nuclear power station
CN103871670A (en) * 2014-03-28 2014-06-18 江苏荣宜电缆有限公司 Double-insulated and double-shielded metal armored cable

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002820A (en) * 1974-05-03 1977-01-11 Canada Wire And Cable Limited Power cable having an extensible ground check conductor
CN201465594U (en) * 2009-07-25 2010-05-12 四川明星电缆股份有限公司 Low smoke halogen-free flame retardant intermediate pressure marine cable
CN101777402A (en) * 2010-03-23 2010-07-14 江苏南亚电缆集团有限公司 Water-resistant power cable
CN201540769U (en) * 2009-10-29 2010-08-04 江苏亨通电力电缆有限公司 Cold-resistant cross-linked polyethylene insulated power cable
CN201611593U (en) * 2010-03-17 2010-10-20 安徽华星电缆集团有限公司 Mining power cable
CN201667251U (en) * 2010-03-23 2010-12-08 江苏南亚电缆集团有限公司 Water-resisting power cable
CN201904157U (en) * 2010-12-29 2011-07-20 金坛市金鹿电缆材料有限公司 Dedicated triple-shielded power cable for nuclear power

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002820A (en) * 1974-05-03 1977-01-11 Canada Wire And Cable Limited Power cable having an extensible ground check conductor
CN201465594U (en) * 2009-07-25 2010-05-12 四川明星电缆股份有限公司 Low smoke halogen-free flame retardant intermediate pressure marine cable
CN201540769U (en) * 2009-10-29 2010-08-04 江苏亨通电力电缆有限公司 Cold-resistant cross-linked polyethylene insulated power cable
CN201611593U (en) * 2010-03-17 2010-10-20 安徽华星电缆集团有限公司 Mining power cable
CN101777402A (en) * 2010-03-23 2010-07-14 江苏南亚电缆集团有限公司 Water-resistant power cable
CN201667251U (en) * 2010-03-23 2010-12-08 江苏南亚电缆集团有限公司 Water-resisting power cable
CN201904157U (en) * 2010-12-29 2011-07-20 金坛市金鹿电缆材料有限公司 Dedicated triple-shielded power cable for nuclear power

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103871661A (en) * 2014-02-24 2014-06-18 安徽华联电缆集团有限公司 Power cable special for securely attached nuclear power station
CN103871661B (en) * 2014-02-24 2016-04-06 安徽华联电缆集团有限公司 A kind of safety-type nuclear power station specialized power cable
CN103871670A (en) * 2014-03-28 2014-06-18 江苏荣宜电缆有限公司 Double-insulated and double-shielded metal armored cable

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Application publication date: 20110525