CN202650666U - A high-power frequency conversion cable for nuclear power - Google Patents
A high-power frequency conversion cable for nuclear power Download PDFInfo
- Publication number
- CN202650666U CN202650666U CN201220141551.6U CN201220141551U CN202650666U CN 202650666 U CN202650666 U CN 202650666U CN 201220141551 U CN201220141551 U CN 201220141551U CN 202650666 U CN202650666 U CN 202650666U
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- CN
- China
- Prior art keywords
- cable
- shielding
- core
- frequency conversion
- nuclear power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 14
- 238000009413 insulation Methods 0.000 claims abstract description 19
- 239000004020 conductor Substances 0.000 claims abstract description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 11
- 239000001301 oxygen Substances 0.000 claims abstract description 11
- 230000004888 barrier function Effects 0.000 claims abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052802 copper Inorganic materials 0.000 claims abstract description 6
- 239000010949 copper Substances 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract 3
- 229910052751 metal Inorganic materials 0.000 claims abstract 3
- 239000003063 flame retardant Substances 0.000 claims description 9
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims 1
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000003365 glass fiber Substances 0.000 claims 1
- 230000005855 radiation Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 abstract 4
- 238000005260 corrosion Methods 0.000 abstract 1
- 239000011241 protective layer Substances 0.000 abstract 1
- 230000001629 suppression Effects 0.000 abstract 1
- 229910052736 halogen Inorganic materials 0.000 description 6
- 150000002367 halogens Chemical class 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000000779 smoke Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 235000019504 cigarettes Nutrition 0.000 description 4
- 229920003020 cross-linked polyethylene Polymers 0.000 description 3
- 239000004703 cross-linked polyethylene Substances 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000005670 electromagnetic radiation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008029 eradication Effects 0.000 description 2
- 239000011491 glass wool Substances 0.000 description 2
- 230000008821 health effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Insulated Conductors (AREA)
Abstract
本实用新型一种核电用大功率变频电缆，包括从内至外依次挤包的缆芯、隔氧层、总屏蔽层和外护层；缆芯包括三根绝缘线芯、填充层和包带，每根绝缘线芯由从内至外依次设置的导体、导体屏蔽、绝缘、绝缘屏蔽和金属屏蔽组成，所述填充层填充在三个绝缘线芯和包带之间；总屏蔽层采用纵包铜塑带结构。本实用新型的屏蔽采用分屏蔽加总屏蔽的结构，同时总屏蔽采用皱纹铜管结构，屏蔽抑制系数＜0.01，达到了电缆完全密封屏蔽的效果，整个电缆易于弯曲，能有效地抑制高次谐波、电磁波的辐射和传导，减小了整个系统的辐射和变频电机的轴承电流，从而减小了变频电机的磨损，从而减小了变频电机的磨损，并具有良好的防水、防腐性能。
The utility model is a high-power frequency conversion cable for nuclear power, which includes a cable core, an oxygen barrier layer, a total shielding layer and an outer protective layer extruded sequentially from the inside to the outside; the cable core includes three insulating wire cores, a filling layer and a wrapping tape, Each insulated core is composed of conductors, conductor shields, insulation, insulation shields and metal shields arranged in sequence from the inside to the outside. The filling layer is filled between the three insulated cores and the wrapping tape; Copper-plastic tape structure. The shielding of the utility model adopts the structure of separate shielding and total shielding, and the total shielding adopts a corrugated copper tube structure, and the shielding suppression coefficient is less than 0.01, which achieves the effect of complete cable shielding, the whole cable is easy to bend, and can effectively suppress high-order harmonics. The radiation and conduction of waves and electromagnetic waves reduces the radiation of the entire system and the bearing current of the variable frequency motor, thereby reducing the wear and tear of the variable frequency motor, and has good waterproof and anti-corrosion properties.
Description
Technical field
The utility model relates to a kind of cable, particularly a kind of nuclear power high-power frequency conversion cable.
Background technology
Development along with power electronic technology, frequency control is little with its volume, the equipment investment expense is few, simple in structure, volume is little, cost is low, energy-conservation (30%-40%), speed adjustable range is large, easy to use, electric pressure is high (having reached at present 10kV), the large advantages such as (having reached at present 10000KW) of capacity, the purposes on nuclear power is more and more extensive.Frequency control has the characteristics such as permanent power, permanent rotating speed, and still, there are following distinct issues simultaneously in frequency control:
Can produce inevitably higher harmonic current and high order harmonic component when 1) frequency converter is worked disturbs, this higher harmonic current might cause that the overload relaying protection produces misoperation and causes accident to occur on the electrical network, and higher harmonic current also can make the power supply quality of electrical network degenerate simultaneously;
2) high order harmonic component emission strong electromagnetic wave makes various electronic equipments be subject to serious interference can to cause the signal of communication distortion, monitors and controls malfunctioning or produce misoperation;
3) high order harmonic component can produce electromagnetic coupled to contiguous loop by line capacitance and disturb the normal operation in other loop;
4) must avoid electric current and voltage generation resonance: because the existence of high order harmonic component, in case the consequence that certain subharmonic and frequency converter one side electric current or motor one side voltage generation resonance will cause electric equipment seriously to burn, and this class resonance is relevant with cable length, wish that generally cable has higher resonance point, the square root that is to say the product of the inductance capacitance of wishing cable has smaller value, so just can obtain larger cable length and resonance does not occur.
Because there are above-mentioned serious problems in frequency control, and common 3 cores, (3+1) core 6-35kV power cable, because the structure unsymmetrical balance, the electric field of cable, magnetic field are in non-equilibrium state all the time, and transfer impedance is high, and the high order harmonic component emission measure is large; Because the high-frequency impulse withstand voltage properties of insulating material is poor and the insulation thickness selection is improper, insulation punctures easily; The screen of common shielded type cable adopts aluminium foil, aluminium strip lapping structure in addition, shielding properties is poor, can not the establishment high order harmonic component in frequency conversion speed-adjusting system, electromagnetic radiation and conduction, there are serious electromagnetic interference and larger motor bearings electric current in system, can reduce the useful life of cable, motor, even the accidents such as puncture can appear in cable insulation, the construction of cable as another is difficult to adapt to the requirement of nuclear power Special use, such as fire-retardant, low cigarette, Halogen, without the burn into radiation hardness etc., therefore can't adapt to this type of nuclear power with the requirement of frequency conversion occasion.
The utility model content
The purpose of this utility model is to solve the problem that above-mentioned prior art exists, and the waterproof high-power frequency conversion system cable peculiar to vessel that is suitable for that a kind of shield effectiveness is good, have good waterproof, the combination property such as flexible is provided.
The technical scheme that realizes the utility model purpose is a kind of nuclear power high-power frequency conversion cable, comprises the cable core, oxygen barrier layer, total screen and the outer jacket that extrude successively from the inside to the outside; Described cable core comprises that three thoroughly do away with edge core, packed layer and band, described every eradication edge core is comprised of the conductor that sets gradually from the inside to the outside, conductor screen, insulation, insulation shielding and metallic shield, and described packed layer is filled between three insulated wire cores and the band; Described total screen adopts the wrinkle copper pipe structure.
The three-phase equilibrium symmetrical structure that described cable core adopts, as three of three-phase thoroughly do away with edge core close contacts arrange be how much symmetrical.
The conductor of the insulated wire cores of described cable core is that the 2nd similar round that meets GB/T 3956-2008 regulation presses structure.
Overlapping wrapped the forming of combarloy band adopted in the metallic shield of the insulated wire cores of described cable core.
The packed layer of described cable core adopts alkali-free glass wool flame-retardant rope interstitital texture.
Adopted technique scheme, the utlity model has following beneficial effect: (1) shielding of the present utility model adopts separated-shielding to add up the structure of shielding, always shield simultaneously the wrinkle copper pipe structure, shielding rejection coefficient＜0.01, reached the effect of the complete closed shield of cable, whole cable is easy to bending, can effectively suppress high order harmonic component, electromagnetic radiation and conduction, the radiation of whole system and the shaft current of variable-frequency motor have been reduced, thereby reduced the wearing and tearing of variable-frequency motor, guaranteed that cable moves reliably and with long-term and lay the maximum adaptation of environment.
(2) because the cable core of cable of the present utility model adopts special three-phase equilibrium symmetrical structure, it is how much symmetrical to be that the mutual close contact of three phase isolated core is, therefore reached the symmetrical balance of the every electric parameter of cable, (comprise the various electric parameters such as inductance, electric capacity) containing under the high order poised state, transfer impedance is low, the high order harmonic component emission measure is little, the operational insulation of cable is in optimum state and brings into play fully its insulation level, guarantee that cable retention under high-frequency impulse emission effect is stable, safe and reliable.
(3) insulation of insulated wire cores of the present utility model adopts Thickness Ratio GB/T 12706-2008 to stipulate that the high dielectric crosslinked polyethylene of thick 3-5mm is as the insulation of cable, insulating performance of cable is good, dielectric property are high, can stand long-term constantly impact of high-frequency impulse reflection stack (2-3 times) voltage; Band adopts the low smoke and zero halogen band; Oxygen barrier layer adopts thermoplastic low-smoke halogen-free flame-resistant oxygen barrier layered material to extrude and forms, and oxygen index is up to 45; Outer jacket adopts the low-smoke halogen-free flame-retardant radiation resistant protective cover material; have fire-retardant, low cigarette, Halogen, without the burn into radiation hardness; so that cable make process, transport, lay and use procedure in; produce without poisonous and harmful substance; to human body without any health effect; surrounding environment without any pollution, natural resources and biological environment have been protected greatly.
(5) good, the voltge surge of anti-pulse-echo performance height, electrical structure balanced, symmetrical of the utility model shield effectiveness, have fire-retardant, low cigarette, Halogen, without combination properties such as burn into radiation hardness, but Secure Application is in the nuclear power frequency-changing cable.
Description of drawings
Content of the present utility model is easier to be expressly understood in order to make, and the below is described in further detail the utility model, wherein according to specific embodiment also by reference to the accompanying drawings
Fig. 1 is structural representation of the present utility model.
Attached number in the figure is:
Cable core 1, insulated wire cores 11, conductor 11-1, conductor screen 11-2, insulation 11-3, insulation shielding 11-4, metallic shield 11-5, packed layer 12, band 13, oxygen barrier layer 2, total screen 3, outer jacket 3.
Embodiment
(embodiment 1)
See Fig. 1, a kind of nuclear power high-power frequency conversion cable of present embodiment comprises the cable core 1, oxygen barrier layer 2, total screen 3 and the outer jacket 3 that extrude successively from the inside to the outside.Total screen 2 adopts the wrinkle copper pipe structure, and shielding properties is superior.
Cable core 1 comprises that three thoroughly do away with edge core 11, packed layer 12 and band 13.Every eradication edge core 11 is comprised of the conductor 11-1 that sets gradually from the inside to the outside, conductor screen 11-2, insulation 11-3, insulation shielding 11-4 and metallic shield 11-5, and packed layer 12 is filled between three insulated wire cores 11 and the band 13; The three-phase equilibrium symmetrical structure that cable core 1 adopts, as three of three-phase thoroughly do away with edge cores 11 close contacts arrange be how much symmetrical.Conductor 11-1 is that the 2nd similar round that meets GB/T 3956-2008 regulation presses structure.Metallic shield 11-5 adopts overlapping wrapped the forming of combarloy band.Packed layer 12 adopts alkali-free glass wool flame-retardant rope interstitital texture.
In the selection of material, conductor screen 11-2 and insulation shielding 11-4 all adopt the polyolefin semiconductive shieldin material to extrude and form; Insulation 11-3 adopts Thickness Ratio GB/T 12706-2008 to stipulate the high dielectric crosslinked polyethylene (XLPE) of thick 3-5mm; Band 13 adopts the low smoke and zero halogen band; Oxygen barrier layer 2 adopts thermoplastic low-smoke halogen-free flame-resistant oxygen barrier layered material to extrude and forms, and oxygen index is up to 45; Outer jacket 4 adopts the low-smoke halogen-free flame-retardant radiation resistant protective cover material; have fire-retardant, low cigarette, Halogen, without the burn into radiation hardness; so that cable make process, transport, lay and use procedure in; produce without poisonous and harmful substance; to human body without any health effect; surrounding environment without any pollution, natural resources and biological environment have been protected greatly.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220141551.6U CN202650666U (en) | 2012-04-06 | 2012-04-06 | A high-power frequency conversion cable for nuclear power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220141551.6U CN202650666U (en) | 2012-04-06 | 2012-04-06 | A high-power frequency conversion cable for nuclear power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202650666U true CN202650666U (en) | 2013-01-02 |
Family
ID=47419733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220141551.6U Expired - Fee Related CN202650666U (en) | 2012-04-06 | 2012-04-06 | A high-power frequency conversion cable for nuclear power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202650666U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107301900A (en) * | 2017-06-22 | 2017-10-27 | 重庆鸽牌电线电缆有限公司 | 35KV multilayer flashing cables |
-
2012
- 2012-04-06 CN CN201220141551.6U patent/CN202650666U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107301900A (en) * | 2017-06-22 | 2017-10-27 | 重庆鸽牌电线电缆有限公司 | 35KV multilayer flashing cables |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20210406 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |