CN201051420Y - Power cable for nuclear power - Google Patents
Power cable for nuclear power Download PDFInfo
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- CN201051420Y CN201051420Y CNU2007200377484U CN200720037748U CN201051420Y CN 201051420 Y CN201051420 Y CN 201051420Y CN U2007200377484 U CNU2007200377484 U CN U2007200377484U CN 200720037748 U CN200720037748 U CN 200720037748U CN 201051420 Y CN201051420 Y CN 201051420Y
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Abstract
The utility model discloses a nuclear power cable which is especially adaptable to electric power transmission of electricity dispatch of electric wirings in nuclear power fields. The utility model comprises three conductive core wires which respectively coat a cladding, inflaming-resisting filling material, an inflaming-resisting inner productive layer, a shielding layer, an inflaming-resisting outer productive sleeve. The three conductive core wires is closed to each other and twisted to form a strand cable, and the inflaming-resisting filling material is filled in the gaps among the three conductive core wires. The inflaming-resisting inner productive layer, the shielding layer, and the inflaming-resisting outer productive sleeve tightly cover the strand cable in turn outwards, and the cladding of each conductive core wire is a co-extrusion layer of an insulating layer and an inflaming-resisting layer, and the shielding layer is a zonular copper layer. The utility model is characterized by reasonable structure, safe and environment-friendly property, and high shielding property and the like. The utility model is also applicable to the connection of electric energy transmission in variable-frequency control circuits.
Description
Technical field
The utility model relates to a kind of nuclear power power cable, be specifically related to a kind of nuclear power place electric wiring dispensing electricity connection electric wire that transmits electric power, also be suitable for generally and be connected the wiring of using electric wire and frequency control loop motor with abominable transmitting electric power of place.Belong to the power cable technology.
Background technology
The nuclear power construction is its fail safe, and independency principle is to guarantee to reduce the influence best method of fault to safety system.HAD102/10 " nuclear power plant's protection system and relevant facility " in " the nuclear safety guide rule " that State Bureau of Nuclear Safety writes has carried out relevant description and requirement to independency principle.The tradition electric wire because to " may be by incidents such as electromagnetic induction, electrostatic interference, short circuit, open circuit, earth fault produced " interaction, fail to introduce " electromagnetic compatibility (EMC) notion is taked and reached and be provided with " function isolate " principle and requirement.
At present along with the raising of all trades and professions automaticity,, confirmed in addition standard both at home and abroad to " electromagnetic compatibility " this problem that may ignore in the past.Originally can not satisfy present requirement as the used plain edition electric wire of transferring electric power, particularly disturb because of the inevitable high order harmonic component that exists in the frequency conversion loop, electric and the control system of the contiguous distribution line of interference effect brings hidden danger for the normal operation of whole system by transmission channel (electric wire).And for the vital nuclear power construction of fail safe, 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 electric wire fails better to solve this type of problem.
Its fail safe of nuclear power construction also is its fire prevention.Because " fire is can constitute directly nuclear safety to threaten ", HAD102/11 " nuclear power plant's fire prevention " 6.5.1 clause is emphasized " material that a large amount of cable insulations that exist and sheath should use fire-retardant, low smog, low-corrosiveness " in " nuclear safety guide rule ".Said existing electric wire also fails to satisfy above requirement.
Summary of the invention
Technical problem to be solved in the utility model is, application by ep-type material, simultaneously by changing the structure of electric wire, provide a kind of cable product to meet environmental protection (EM) requirement, it is strong and self externally do not produce a kind of nuclear power power cable that disturbs that performance meets a kind of antijamming capability of " electromagnetic compatibility (EMC) " and nuclear power " function isolation ".In the hope of overcoming the deficiency of prior art.
For realizing that the technical scheme that above-mentioned purpose is taked is:
A kind of nuclear power power cable comprises 3 conductive core lines, flame-retardant filler, fire-retardant sheath, screen, the fire-retardant oversheath that clad surrounding layer respectively; 3 adjacent each other and stranded strandings of conductive core line; Flame-retardant filler is filled in 3 spaces between the conductive core line; Hard-pressed bale is on said stranded stranding successively from the inside to the outside for fire-retardant sheath, screen and fire-retardant oversheath, and its innovative point is:
The surrounding layer of a, conductive core line is insulating barrier and flame-retardant layer double-layer coextrusion layer;
B, screen are banded copper layer.
Can understand by above given technical scheme, the inside of the whole cable of the utility model is made up of three conductive core lines, and cladding insulating barrier and flame-retardant layer double-layer coextrusion surrounding layer, and stranded stranding, the wrapped fire-retardant sheath of stranding appearance, place flame-retardant filler between conductor wire core, the outsourcing copper strips constitutes screen, and outermost extrudes fire-retardant oversheath.Thereby realized the purpose of this utility model.
The conductor wire core cross sectional shape is preferably fan-shaped or circular.
The utility model also comprises bare conductor layer; Bare conductor layer is located between fire-retardant sheath and the screen.And said bare conductor layer is preferably the braiding copper mesh layers.When the sectional area of cable was not less than 35 square millimeters, described screen can be made up of evenly distribute along cross section many bare copper wires and wrapped copper strips, and during less than 35 square millimeters, described screen can adopt copper strips or copper wire braiding to form.
The preferred screen sectional area of the utility model is 46.7%～66.6% of a single conductive core line sectional area.
The sectional area sum that preferred bare conductor layer of the utility model and screen are formed is 46.7%～66.6% of single conductive core line sectional area.
Prototype test proves, more than the shielding price ratio of said two kinds of sectional areas 46.7%～66.6% best.
The utility model also comprises the high flame retardant oxygen barrier layer; The high flame retardant oxygen barrier layer is located between screen and the fire-retardant oversheath.Because the existence of high flame retardant oxygen barrier layer for further raising fire retardancy of the present utility model, will be played tangible positive role.
After the first case of above-mentioned technology was implemented, the utility model also had following characteristics under the prerequisite that realizes its purpose:
A, do not contain halogen, do not produce pernicious gas and corrosive gas;
The amount of being fuming is few when b, burning;
C, has the identical anti-flammability of polyolefin cable;
D, do not contain heavy metals such as lead, do not contain environmental hormone, not contaminated land;
E, can reuse.
The utility model then can be eliminated high order harmonic component interference to external world during as the electric energy transmitting element preferably, and its special construction is arranged simultaneously, has reduced the shaft voltage that motor is in operation and produces in the frequency conversion loop, the safety of having protected motor to use.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the utility model;
Fig. 2 is the structural representation of the another kind of embodiment of the utility model.
Embodiment
One of embodiment, as shown in Figure 1.
A kind of nuclear power power cable comprises three conductive core lines 1, and outsourcing insulation and flame-retardant layer double-layer coextrusion surrounding layer 2, and stranded stranding.The wrapped fire-retardant sheath 4 in the stranding outside, the gap is provided with flame-retardant filler 3, and braiding copper wire or copper strips lapped shielding layer 6 are established in fire-retardant sheath 4 outsides, also are provided with bare copper conductors layer 5 simultaneously, and evenly distribute along cross section, form ground wire.Form shielding by bare braiding copper mesh conductor layer 5 with screen 6, screen 6 peripheral hardware high flame retardant oxygen barrier layers 7, the cable outermost layer is established high flame retardant oversheath 8, and conductor wire core 1 cross section is fan-shaped; Both shielding sectional area sums of being formed of bare conductor layer 5 and screen 6 are 50% of single conductive core line 1 sectional area.
Two of embodiment, as shown in Figure 2.
A kind of nuclear power power cable, except not possessing bare conductor layer 5, conductor wire core 1 cross section is outside the circle, other is all as one of embodiment.The utility model of two of this embodiment is suitable for the cable of little core sectional area.
The utility model substitutes the common wiring cable and uses in the occasion that environmental protection (EM) and electromagnetic compatibility (EMC) is had requirement, and the while can be in the frequency control loop uses in the circuit of transmission of electric energy.Meet the nuclear power construction reaches strict demand to fail safe than the adverse circumstances place industry requirement especially.
Claims (7)
1. a nuclear power power cable comprises 3 conductive core lines (1), flame-retardant filler (3), fire-retardant sheath (4), screen (6), the fire-retardant oversheath (8) that clad surrounding layer (2) respectively; The adjacent each other and stranded stranding of 3 conductive core lines (1); Flame-retardant filler (3) is filled in the space between 3 conductive core lines (1); Fire-retardant sheath (4), screen (6) and fire-retardant oversheath (8) from the inside to the outside successively hard-pressed bale on said stranded stranding, it is characterized in that:
The surrounding layer (2) of a, conductive core line (1) is insulating barrier and flame-retardant layer double-layer coextrusion layer;
B, screen (6) are banded copper layer.
2. according to the described nuclear power power cable of claim, it is characterized in that: the cross sectional shape of 3 conductive core lines (1) is fan-shaped or circular.
3. nuclear power power cable according to claim 2 is characterized in that: also comprise bare conductor layer (5); Bare conductor layer (5) is located between fire-retardant sheath (4) and the screen (6).
4. nuclear power power cable according to claim 3 is characterized in that: bare conductor layer (5) is the braiding copper mesh layers.
5. nuclear power power cable according to claim 1 is characterized in that: screen (6) sectional area is 46.7～66.6% of single conductive core line (a 1) sectional area.
6. nuclear power power cable according to claim 3 is characterized in that: bare conductor layer (5) and screen (6) the shielding sectional area sum that both formed are 46.7～66.6% of single conductive core line (1) sectional area.
7. according to claim 1 or 3 described nuclear power power cables, it is characterized in that: also comprise high flame retardant oxygen barrier layer (7); High flame retardant oxygen barrier layer (7) is located between screen (6) and the fire-retardant oversheath (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200377484U CN201051420Y (en) | 2007-05-16 | 2007-05-16 | Power cable for nuclear power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200377484U CN201051420Y (en) | 2007-05-16 | 2007-05-16 | Power cable for nuclear power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201051420Y true CN201051420Y (en) | 2008-04-23 |
Family
ID=39337913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200377484U Expired - Fee Related CN201051420Y (en) | 2007-05-16 | 2007-05-16 | Power cable for nuclear power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201051420Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074298A (en) * | 2010-12-29 | 2011-05-25 | 金坛市金鹿电缆材料有限公司 | Triple shielding flame-retardant type power cable special for nuclear power |
| CN102646468A (en) * | 2012-04-25 | 2012-08-22 | 安徽宏源特种电缆集团有限公司 | Electromagnetic double-shielded low-noise radio-frequency cable used for nuclear power station |
| CN103903731A (en) * | 2014-03-28 | 2014-07-02 | 安徽华天电缆有限公司 | Anti-stretching radiation-resistant light type insulated cable |
| CN112820445A (en) * | 2021-02-07 | 2021-05-18 | 三门核电有限公司 | Physical isolation structure and method for nuclear power plant cable |
-
2007
- 2007-05-16 CN CNU2007200377484U patent/CN201051420Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074298A (en) * | 2010-12-29 | 2011-05-25 | 金坛市金鹿电缆材料有限公司 | Triple shielding flame-retardant type power cable special for nuclear power |
| CN102074298B (en) * | 2010-12-29 | 2013-02-13 | 金坛市金鹿电缆材料有限公司 | Triple shielding flame-retardant type power cable special for nuclear power |
| CN102646468A (en) * | 2012-04-25 | 2012-08-22 | 安徽宏源特种电缆集团有限公司 | Electromagnetic double-shielded low-noise radio-frequency cable used for nuclear power station |
| CN103903731A (en) * | 2014-03-28 | 2014-07-02 | 安徽华天电缆有限公司 | Anti-stretching radiation-resistant light type insulated cable |
| CN112820445A (en) * | 2021-02-07 | 2021-05-18 | 三门核电有限公司 | Physical isolation structure and method for nuclear power plant cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Huaguang Cable and Electrical Appliance Co., Ltd. Assignor: Jintan Jinlu Cable Material Co., Ltd. Contract record no.: 2010320001163 Denomination of utility model: Power cable for nuclear power Granted publication date: 20080423 License type: Exclusive License Record date: 20101029 |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jintan Jinlu Cable Material Co., Ltd. Assignor: Jiangsu Huaguang Cable and Electrical Appliance Co., Ltd. Contract record no.: 2010320001163 Denomination of utility model: Power cable for nuclear power Granted publication date: 20080423 License type: Exclusive License Record date: 20101029 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080423 Termination date: 20120516 |