CN208422508U - A kind of super-pressure insulating gas pipeline cable - Google Patents
A kind of super-pressure insulating gas pipeline cable Download PDFInfo
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- CN208422508U CN208422508U CN201821146345.8U CN201821146345U CN208422508U CN 208422508 U CN208422508 U CN 208422508U CN 201821146345 U CN201821146345 U CN 201821146345U CN 208422508 U CN208422508 U CN 208422508U
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- insulating gas
- insulator
- gas pipeline
- conductor
- voltage insulating
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- 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
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Abstract
本实用新型公开了一种超高压绝缘气体管线电缆，包括有导体，其特征在于：所述导体上套装有数组间隔设置的绝缘子，且每组绝缘子均包括有两个对应连接配合且相对称的绝缘子，所述绝缘子的截面为锥形，其小端通过固定件固定在导体上，其大端设有与其配合的法兰，其相邻组绝缘子的法兰之间设有外壳，且导体、固定件、绝缘子、法兰以及外壳之间构成一个单元密封腔，且单元密封腔内封装有高压绝缘气体。本实用新型结构设计合理，材料性能优良，其电缆具有较高的电压等级，可适用于电压500kV的水电、火电、核电的高压输出线路，电缆不仅成本较低、安全风险较低，而且可保证设备、人员安全运行及工作，满足现今的电厂使实际工作环境的需求。
The utility model discloses an ultra-high voltage insulating gas pipeline cable, which comprises conductors. The utility model is characterized in that: the conductors are sheathed with a plurality of insulators arranged at intervals, and each group of insulators includes two correspondingly connected and symmetrical Insulator, the cross section of the insulator is tapered, its small end is fixed on the conductor by a fixing piece, its large end is provided with a flange that matches it, and a casing is provided between the flanges of the adjacent group of insulators, and the conductor, A unit sealing cavity is formed between the fixing piece, the insulator, the flange and the casing, and a high-voltage insulating gas is encapsulated in the unit sealing cavity. The utility model has reasonable structure design, excellent material performance, and its cable has a high voltage level, which can be applied to the high-voltage output lines of hydropower, thermal power and nuclear power with a voltage of 500kV. The cable not only has low cost, low safety risk, but also ensures The safe operation and work of equipment and personnel meet the needs of the actual working environment of today's power plants.
Description
Technical field:
The utility model relates to extra-high-tension cable fields, relate generally to a kind of super-pressure insulating gas pipeline cable.
Background technique:
It is well known that the power generation total installation of generating capacity in the year two thousand twenty China will be more than 1,600,000,000 kilowatts.Due to the coal, water, wind in China
Etc. energy resources and productivity the not perfectly flat weighing apparatus of regional distribution, determine to walk and extensive concentrate exploitation, remote outer power transmission
Road, this needs the guarantee of power transmission network.The unique challenges that China develops smart grid are to ensure imperial scale, extreme high voltage etc.
" cleaning, safety, self-healing, economy, interaction " operation of grade, especially big ability to transmit electricity and power transmission network.State Grid Corporation of China construction and
It promotes in " strong smart grid " three phases and long distance power transmission aspect is emphasized, the key technology that should be reached advanced world standards
And equipment, while realizing important breakthrough and extensive use, gas insulated high voltage transmission line of electricity is exactly long distance powedr transmission technology.
Super-pressure insulating gas pipeline cable can transmit the electric energy of larger capacity compared with power cable, up to GW
Grade.Super-pressure insulating gas pipeline cable is more suitable for that high pressure and super-pressure is remote, great Rong compared with overhead transmission line
The power transmission of amount.In addition it is suitable for waterpower and thermal power plant, EHV Substation goes out route or interconnector；It is particularly suitable
In for example serious ice disaster area of awful weather, environment special area such as hills and mountains area and high and steep mountains.Super-pressure insulation gas
Fluid line cable can efficiently use limited space resources, realize that high-voltage and ultra-high large capacity electric energy is directly entered the underground in city
The load centers such as electric substation.Super-pressure insulating gas pipeline cable arranges optimization power plant, transmission line of electricity intersection is passed through, underground
Long inclined shaft or the vertical shaft laying of transmission system, ground overhead installation, gas insulated combined electrical equipment switchyard renovates and gas
The dilatation of insulation in combined electric appliance switchyard or contact all have been widely used.Furthermore it is also possible to apply in overhead line because of limited space
In place of use processed, such as the appearance of the city requires, official regulations or environment reason do not allow the place using overhead line, as densely populated
Therefore big city may is that a kind of good choice using super-pressure insulating gas pipeline cable L power supply.Super-pressure insulation gas
Fluid line cable is arranged in the large hydropower station high-voltage terminal of underground especially suitable for Power Plant, and large pumped storage power plant is high
Extrusion line, connection and HVDC converter substation and extra-high buckling between nuclear power station main transformer high-pressure side and high voltage distribution installation
High pressure contact in electric institute.
Similar to the tubular shape conductor of coaxial placement in gas insulated combined electrical equipment in super-pressure insulating gas pipeline cable principles
Bus, inside are filled with insulating gas.Though super-pressure insulating gas pipeline cable it is similar to gas insulated combined electrical equipment bus it
Place, but according to different application places, especially in long distance powedr transmission, or there are many not with gas insulated combined electrical equipment
Same key technology, super-pressure insulating gas pipeline cable can choose different wall thickness, diameter and insulating gas, can relatively pass through
Ji meets different requirements.There are many advantages of super-pressure insulating gas pipeline cable, and mainly current-carrying capacity is very high, can allow for big
Volume transport.The another important advantage of super-pressure insulating gas pipeline cable is small more of capacity ratio high-tension cable, thus
Even if long distance powedr transmission does not need reactive compensation yet.Therefore, super-pressure insulating gas pipeline cable running safety reliability is high,
Transmission capacity is big, keeps in with surrounding enviroment, and loss ratio packaged cable and overhead transmission line are all low.Creating strong intelligence
Forceful electric power conveying and information technology business can be integrated in terms of power grid.Military war preparedness and metropolitan safety are all had simultaneously
Especially important meaning.Super-pressure insulating gas pipeline cable meets the operation and maintenance of electric system scene, the pre- prosecutor of safety comprehensive
Case and modern appearance esthetic requirement.Since super-pressure insulating gas pipeline cable has ability of supplying electric power strong, friendly with surrounding enviroment
The advantages of getting along, super-pressure insulating gas pipeline cable have installation, operation and maintenance convenient, and failure rate is low, does not overhaul substantially
Many advantages have had more than 30 years operating experience in foreign countries, its design service life is up to 50 years or more.
The advantages of super-pressure insulating gas pipeline cable is compared with high voltage overhead and cable run is with transmission capacity spy
Not big, thermal energy and electric energy loss are seldom, and energy-saving effect is good, no electromagnetic interference, and radiation is low, do not influence wireless telecommunications, protective performance
Good, maintenance lack that failure rate is extremely low, and the disasters ability such as anti-ice-snow and earthquake is strong, and fire protecting performance is excellent, high safety and reliability, use
Service life it is long up to as long as half a century, transmit electricity corridor and space occupied it is small and large amount of land resources can be saved etc..
The rigid structure metal cylinder shell and coaxial conductive bar and disc insulator of lightweight, clean insulation compress empty
The environment-friendly type insulated transmission line of electricity of gas composition is third generation super-pressure insulating gas pipeline cable, belongs to full environmentally friendly machine, meanwhile,
It is the new and high technology power equipment product in intelligent power grid technology again.Certain specific use environments and under the conditions of, have more
Technology and economic superiority.Having compared with the cost of conventional line low has height.Super-pressure insulating gas pipeline cable is in foreign countries
The operating experience for having had more than 30 years has used in the water power and nuclear power engineering in China.Super-pressure insulating gas pipeline electricity
The design service life of cable is up to 50 years.China's electric power and hydropower producer research institute think that super-pressure insulating gas pipeline cable is special
It is not suitble in high voltage, the area application such as large capacity and corridor are difficult, natural conditions are severe, and the gas that will insulate for super-pressure from now on
Fluid line cable transmission line engineering provides reference basis for design.Think that super-pressure insulating gas pipeline cable is particularly suitable simultaneously
The large hydropower station lead-out wire of underground is arranged in Power Plant and hydroenergy storage station lead-out wire, nuclear power station and high pressure change
Interconnection etc. in stream station, large-scale substation station.It there is no the experience of long distance powedr transmission at home at present.
The insulating materials SF6 gas of this kind of cable has insulation performance good, also has unique thermal characteristics and electrical characteristics.
SF6 gas is electronegative gas, and molecule and atom have the ability of very strong absorption free electron, can largely adsorb arc gap
In free electron, generate anion.The motion ratio free electron of anion is much slower, it is easy to and cation is combined into neutrality
Molecule and atom, the recovery of arc gap dielectric strength when greatly accelerating current over-zero.Sulfur hexafluoride gas has non-combustible
Holding property, and there is good insulation performance and arc extinction performance, when sixties is primarily used in breaker, then expands application
Various electrical equipments are waited in transformer, cable ....
Compared with oil-filled electric equipment, it has the following main features the gas isolated electrical equipment of SF6:
(1) it is not easy to catch fire, is highly-safe.SF6 under room temperature, normal pressure is non-flammable compressive gas, just in case equipment itself breaks down
Or when surrounding generation fire, SF6 will not burn, and can prevent the sprawling of the intensity of a fire.The live part of switchgear all seals
In the metal-back of ground connection, the danger of non-contact electric, face and there is no because of accident related caused by the external causes such as flying object can ensure that peace
Row for the national games.
(2) service life and time between overhauls(TBO) are long.SF6 electrical equipment be completely sealed structure, external air, moisture and its
Phenomena such as its impurity etc. is not easy to invade, and is generally not in gentle internal wetted, dustiness dye, interior each component is inactive again
SF6 is surrounded, to slow down the aging of electric material.SF6 itself is unlikely to deteriorate, deposit and other pollution impurity also compared with
It is few, compared with oil-filled equipment, opposite service life and the time between overhauls(TBO) for extending equipment.
(3) occupied area is small, installs, is easy to operate.Totally enclosed SF6 combined electric appliance equipment, structure is extremely compact, body
Product is small, and use, the occupied area of installation are also small.According to statistics, the occupied area of an electric substation using fully closed combined electric unit
Only the 20% of open-air substation.Installation, the operation of SF6 breaker and transformer are fairly simple, and total weight is set than oil-filled
Standby light, noise when operation is also smaller.
(4) function admirable, long journey are reliable.The insulation characterisitic of SF6 is better than air, and Breaking capacity is big, is situated between for excellent arc extinguishing
Matter.Under the same conditions, lonely ability of going out is equivalent to 100 times of air；The carbonaceous object of free carbon etc is gone out after orphan and is not generated,
It is safe and reliable to operation.
But the dielectric as pipeline cable, there are biggish risk, pure new SF6 gases for the use of SF6
Colourless, tasteless, odorless, non-ignitable, stable chemical performance, belongs to inert gas at normal temperature.But in electric system, due to SF6 gas
Insulation and arc-extinguishing medium are acted mainly as, during breaker or GIS breaking operation, in scratch start effect, corona, spark discharge
Under the influence of the factors such as shelf depreciation, high temperature, SF6 gas will do it decomposition, its decomposition product becomes corrosivity after encountering moisture
Electrolyte, especially certain high toxicity decomposition products, such as SF4, S2F2, S2F10, SOF2, HF and SO2, they can stimulate skin
Skin, eyes, mucous membrane can also cause dizzy and pulmonary edema or even causing death if soakage is big.In confined space, due to sky
Air-flow is logical, and slowly decomposition product deposits indoors, is not easy to be discharged, thus greatly dangerous to maintenance and tour personnel's generation；And
Since the leakage of SF6 gas occurs for SF6 device room, it is most likely that cause serious accident.
Utility model content:
The utility model aim is exactly in order to make up the defect of prior art, to provide a kind of super-pressure insulating gas pipeline electricity
Cable, reasonable in design, material property is excellent, meets the needs of actual working environment.
The utility model is achieved through the following technical solutions:
A kind of super-pressure insulating gas pipeline cable, includes conductor, it is characterised in that: be set with array on the conductor
Spaced insulator, and every group of insulator include there are two be correspondingly connected with cooperation and symmetrical insulator, it is described absolutely
The section of edge is taper, and small end is fixed on conductor by fixing piece, and big end is equipped with flange engaged therewith, adjacent
It is equipped with shell between the flange of group insulator, and constitutes a unit between conductor, fixing piece, insulator, flange and shell
Seal chamber, and high-voltage isulation gas is packaged in unit seal chamber.
The conductor uses electrician's round copper pipe, section 3000mm.
The insulator uses basin shape toughened glass insulator, the size and shell sizes of the insulator end flange
Size is identical, and material is aluminium alloy.
The fixing piece uses self-clinching fastener, and material is aluminium alloy, and interior spatial design is conical, in conductor
Reversed conical plastics washer is put between fixing piece.
The high-voltage isulation gas is the mixed gas of SF6+N2+He.
The ratio of SF6:N2:He is 30:50:20 in the mixed gas.
The shell is the aluminium-alloy pipe of wall thickness 10mm, and every section pipeline uses flanged joint.
The utility model has the advantages that:
The structure design of the utility model is reasonable, and conductor uses heavy in section electrician's round copper pipe, and such design is due to height
The measure pressing the electric current kelvin effect of transmission of electricity and taking realizes that high current, high voltage, low capacitor are transmitted electricity, without power compensation etc..
Insulating gas uses SF6+N2+He mixed gas, and ratio of gas mixture 30:50:20 has and pure SF6
The same electric property of gas, and there is splendid economy, and reduce gas and leak brought risk.Insulator is adopted
With tempered glass, not only with stronger mechanical performance, also there is excellent insulation performance, it is high pressure resistant, reach 750kV and with
On, resistance to electric arc, go out corona.
Aluminium alloy fixing piece for fixing the effect of copper conductor, and is Self tightening device, and interior spatial design is conical,
Reversed conical plastics washer is put between conductor and fixing piece, after tightening flange nut, since aluminium alloy fixing piece is to Forward
It is dynamic, and conical plastics washer is covered and is not moved on conductor, so fastening conductor.Insulator is basin shape, and design in this way can increase absolutely
The distance on edge surface prevents the effect of electric arc.
Cable jacket is the aluminium-alloy pipe of wall thickness 10mm, and every section pipeline uses flanged joint；Using aluminium-alloy pipe as electricity
The shell of cable, has extremely light weight, and corrosion-resistant, compression resistance does not form surrounding enviroment and pollutes；And cable can realize overlength
Away from transmission of electricity, maximum distance reaches 10km.
Detailed description of the invention:
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment:
Referring to attached drawing.
A kind of super-pressure insulating gas pipeline cable, includes conductor 1, and it is spaced absolutely that array is set on conductor 1
Edge 2, and every group of insulator 2 includes that there are two be correspondingly connected with cooperation and symmetrical insulator, the section of the insulator 2
For taper, small end is fixed on conductor 1 by fixing piece 6, and big end is equipped with flange 5 engaged therewith, adjacent sets insulation
It is equipped with shell 4 between the flange 5 of son 2, and constitutes a list between conductor 1, fixing piece 6, insulator 2, flange 5 and shell 4
First seal chamber, and high-voltage isulation gas is packaged in unit seal chamber.
The conductor 1 uses electrician's round copper pipe, section 3000mm.
The insulator 2 uses basin shape toughened glass insulator, the size and shell 4 of 2 end flange 5 of insulator
Size is identical, and material is aluminium alloy.
The fixing piece 6 uses self-clinching fastener, and material is aluminium alloy, and interior spatial design is conical, is being led
Reversed conical plastics washer is put between body and fixing piece.
The high-voltage isulation gas is the mixed gas of SF6+N2+He.
The ratio of SF6:N2:He is 30:50:20 in the mixed gas.
The shell 4 is the aluminium-alloy pipe of wall thickness 10mm, and every section pipeline uses flanged joint.
In above-mentioned technical proposal:
(1), the conductor of cable, using electrician's round copper pipe, section reaches 3000mm2, it can be achieved that high current, high voltage,
Low capacitor is transmitted electricity, without power compensation etc..
(2), insulator, using basin shape tempered glass, the size and cable tube shell sizes size phase of the flange of insulator
Together, material is aluminium alloy, and fixing piece uses self-clinching fastener, and material is aluminium alloy, and insulator is tempered glass, and shape is basin
Shape；Insulator uses tempered glass, high pressure resistant not only with stronger mechanical performance, also with excellent insulation performance, reaches
750kV or more, resistance to electric arc, go out corona.The outer rim of insulator is flange, and material is aluminium alloy, for fixing insulator and outer
The effect of shell, the basin bottom of insulator are aluminium alloy fixing piece, for fixing the effect of copper conductor, and are Self tightening device, interior space
Conical, the upper reversed conical plastics washer of set between conductor and fixing piece is designed, after tightening flange nut, since aluminium closes
Golden fixing piece moves forward, and conical plastics washer is covered and do not moved on conductor, so fastening conductor.Insulator is basin shape, this
Sample designs the distance that can increase insulating surface, prevents the effect of electric arc.
(3), high-voltage isulation gas, takes SF6+N2+He mixed gas (gas pressure 0.5MPa), and ratio of gas mixture is
30:50:20 has the electric property as pure SF6 gas, and has splendid economy, and reduce gas
Risk brought by leaking.
(4), cable jacket, taking wall thickness is the aluminium-alloy pipe of 10mm, and every section pipeline uses flanged joint.Using aluminium alloy
Shell of the pipe as cable, has extremely light weight, and corrosion-resistant, compression resistance does not form surrounding enviroment and pollutes.
Material property used in the above pipeline construction of cable is excellent, the cable of design voltage with higher etc.
Grade is applicable to the High voltage output route of the water power of voltage 500kV, thermoelectricity, nuclear power, and not only cost is relatively low for cable, security risk
It is lower, and can guarantee equipment, personnel safety operation and work, meet power plant's requirement now.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821146345.8U CN208422508U (en) | 2018-07-19 | 2018-07-19 | A kind of super-pressure insulating gas pipeline cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821146345.8U CN208422508U (en) | 2018-07-19 | 2018-07-19 | A kind of super-pressure insulating gas pipeline cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208422508U true CN208422508U (en) | 2019-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821146345.8U Expired - Fee Related CN208422508U (en) | 2018-07-19 | 2018-07-19 | A kind of super-pressure insulating gas pipeline cable |
Country Status (1)
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| CN (1) | CN208422508U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108933003A (en) * | 2018-07-19 | 2018-12-04 | 河北环亚线缆有限公司 | A kind of super-pressure insulating gas pipeline cable |
-
2018
- 2018-07-19 CN CN201821146345.8U patent/CN208422508U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108933003A (en) * | 2018-07-19 | 2018-12-04 | 河北环亚线缆有限公司 | A kind of super-pressure insulating gas pipeline cable |
| CN108933003B (en) * | 2018-07-19 | 2024-02-27 | 河北环亚线缆有限公司 | Ultrahigh-voltage insulating gas pipeline cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230818 Address after: 062550 Renqiu economic and Technological Development Zone, Cangzhou City, Hebei Province Patentee after: Hebei Huanya laser equipment Co.,Ltd. Address before: 062550 Nanma Industrial Zone, Renqiu City, Cangzhou City, Hebei Province Patentee before: HEBEI HUANYA CABLE Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190122 |