CN102270824A - 500kV and more power cable dry GIS (Global Information System) terminal - Google Patents
500kV and more power cable dry GIS (Global Information System) terminal Download PDFInfo
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- CN102270824A CN102270824A CN2010101907817A CN201010190781A CN102270824A CN 102270824 A CN102270824 A CN 102270824A CN 2010101907817 A CN2010101907817 A CN 2010101907817A CN 201010190781 A CN201010190781 A CN 201010190781A CN 102270824 A CN102270824 A CN 102270824A
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Abstract
The invention relates to a cable accessory in the field of power cable transmission systems, in particular to a 500kV and more power cable dry GIS (Global Information System) terminal. The terminal comprises an epoxy sleeve (1), a spring compression mechanism (2) with a spring (2-1) and a stress cone (3) and further comprises outlet hardware (4), a shielding cover (5) and a tail pipe (6). The stress cone (3) is arranged in the epoxy sleeve (1). The spring compression mechanism (2) is arranged under the stress cone (3). The stress cone (3) is made of liquid silicon rubber. The terminal disclosed by the invention has the advantages of steady and reliable performance, high yield and low integrated cost because the liquid silicon rubber material of the stress cone is pure; simple manufacture process, easiness manufacture and low manufacture cost; more excellent process mouldability and low required forming pressure because the liquid silicon rubber has lower viscosity and better liquidity before being vulcanized;; and good product quality.
Description
Technical field
The present invention relates to the electric cable accessories in a kind of power cable transmission system field, particularly a kind of 500kV and the above power cable dry type of 500kV GIS terminal.
Background technology
At present, in the power cable transmission system of 500kV and the above electric pressure of 500kV, cable mostly is power cable with cross-linked polyethylene insulation, and dry type GIS terminal is used for being electrically connected of power cable with cross-linked polyethylene insulation and GIS combined electrical apparatus, in order to realize the transmission of electric energy.Construction along with large hydropower station, hydroenergy storage station, extra-high voltage grid, the use amount of dry type GIS terminal is increasing, in 500kV and the power cable connected system more than the 500kV, dry type GIS terminal is important connector, and the reliability of dry type GIS terminal directly has influence on the reliability of transmission system.
In 500kV and the above power cable dry type of 500kV GIS terminal, at present generally using the stress cone of dry type GIS terminal is integral prefabricated insulation system pattern, the dry type GIS terminal of this structure, it includes epoxy bushing, has the spring compression mechanism and the stress cone of spring, also include outlet gold utensil, radome and tail pipe, stress cone is contained in the epoxy bushing, is provided with spring compression mechanism below the stress cone, and stress cone is made by ethylene propylene diene monomer (EPDM) material.Spring attachment presses closer the stress cone of integral prefabricated type, makes it need not add insulating compounds such as any insulating oil or insulating gas near the epoxy bushing tapered wall in the dry type GIS terminal.It is when insulation shield is cut off that stress cone mainly acts on, in the GIS terminal, play the effect of uniform electric field and reinforced insulation, also provide essential thrust to the surface of cable simultaneously, to improve terminal integral insulation level, stress cone is the critical component of dry type GIS terminal.Because stress cone is made by ethylene propylene diene monomer (EPDM) material, therefore present 500kV and the above power cable dry type of 500kV GIS terminal exists following defective:
(1) quality of materials of making stress cone is difficult to control, and the material ethylene propylene diene rubber of stress cone mainly is the terpolymer of ethene, propylene and non-conjugated diene hydrocarbon, has multiple additives to add in the process of mixing, and the prescription complexity is difficult to the control material quality; The viscosity of material height, moulding process is poor, and the rate of finished products of stress cone has only about 60%.
(2) complex manufacturing technology, the former pressure that the machining stress awl needs is big, bulky, production cost height.When ethylene propylene diene monomer (EPDM) material is processed into stress cone, employed equipment is annotated rubber machine structure referring to shown in Figure 3, during making the material ethylene propylene diene rubber is placed in the barrel 21, be expelled in the mould 23 by injection mechanism 22, mould 23 is made up of the mold 23-1 and the bed die 23-2 of mutual coupling, and heating back material sulfidization molding in mold cavity is a stress cone.Because the viscosity of ethylene propylene diene rubber after plasticizing is very high, and it is mobile poor, be injected into die cavity, need tens pressure, die cavity and equipment need bear very high pressure in the injection process, because the mould volume is very big, need the special special use of large-tonnage large-scale notes rubber machine and large mold just can annotate the rubber moulding, and used material wants a shot to finish, therefore produce the stress cone of 500kV and the above power cable dry type of 500kV GIS terminal, the notes rubber machine tonnage that needs reaches more than 1600 tons, the single injecting glue reaches more than 80 liters and just can meet the demands, such equipment volume is big, the equipment cost height, and increasing of equipment cost causes whole cost of manufacture high.
(3) because ethylene propylene diene rubber has higher hardness, Shao Shi A60～70, poor with the stickiness of cable surface, cause the installation difficulty of product and the increase of hazard rate, the aging back of the watertight aircase of ethylene propylene diene rubber mechanical performance (aging condition: 135 ℃ ± 3 ℃, 7d), compression set≤15～25%, tensile strength rate of change≤20～30%, the rate of change of percentage elongation≤20～30%, material ageing resistance, heat-resisting quantity relatively poor, product will move under≤100 ℃ of environmental conditions, use is restricted, narrow application range.
Though the above power cable dry type of existing 500kV and 500kV GIS terminal exists above-mentioned defective, people can't solve this technical barrier always for a long time.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of stable and reliable for performance, rate of finished products is high, manufacture craft is simple, making is easy, cost is low, the measured 500kV of matter and the above power cable dry type of 500kV GIS terminal.
Realize that the above-mentioned purpose technical scheme is: the above power cable dry type of a kind of 500kV and 500kV GIS terminal, include epoxy bushing, have the spring compression mechanism and the stress cone of spring, also include outlet gold utensil, radome and tail pipe, stress cone is contained in the epoxy bushing, be provided with spring compression mechanism below the stress cone, described stress cone is made by liquid silastic.
Further, described stress cone is made up of electric conductor and insulator.
After adopting technique scheme, therefore the above power cable dry type of 500kV of the present invention and 500kV GIS terminal has a lot of benefits owing to the manufacturing materials with the critical component stress cone is improved to liquid silastic by ethylene propylene diene rubber:
(1) stable and reliable for performance, the rate of finished products height, integrated cost is low.Make the quality of materials of stress cone and control easily, the material liquid silicon rubber material of stress cone is simple, need not mix separately, and prescription is simple, easily the control material quality; Viscosity of material is low, and moulding process is good, and the rate of finished products of stress cone can reach about 90%, and properties of product of the present invention are more reliable and more stable, the rate of finished products height, and time-saving energy-saving, integrated cost descends more than 40%.
(2) manufacture craft is simple, makes easily, and cost of manufacture is low.Liquid silastic is a class organic silica gel of relative mixed milling type semisolid silicon rubber and common room temperature vulcanization one pack system silica gel, have lower viscosity and good mobility before the liquid silastic sulfuration, viscosity only is 1/10 of ethylene propylene diene rubber, has more excellent technological forming, therefore manufacture craft is simple, make easily, the briquetting pressure that needs is little, do not need the special special use large-scale notes rubber machine and the large mold of big pressure to carry out the injecting glue moulding, only need just can finish the injecting glue moulding with common injecting glue equipment and mold, as adopt the two component glue-injection machines of liquid silastic, and the glue-injection machine pressure that needs needs only several million, and pressure is 1/10 of ethylene propylene diene rubber notes rubber machine, the injecting glue function is injected continuously, single can reach 400 liters, and the injecting glue amount can satisfy the needs of the stress cone production of 500kV and the above power cable dry type of 500kV GIS terminal, and equipment volume is little, equipment cost reduces greatly, making apparatus is easy to get, and makes easily, and therefore cost of manufacture of the present invention is low.
(3) good product quality.Because liquid silastic has lower hardness, Shao Shi A35～45 are good with the stickiness of cable surface, product is installed easily, and hazard rate is low, the aging back of the watertight aircase of liquid silastic mechanical performance (aging condition: 135 ℃ ± 3 ℃, 7d), compression set≤15%, tensile strength rate of change≤10%, the rate of change of percentage elongation≤10%, material ageing resistance good, heat-resisting quantity is good, product can long-time running under 100～150 ℃ of environmental conditions, good product quality, applied widely.
The present invention has solved the complicated technical problem that the available technology adopting ethylene propylene diene rubber exists with simple technical scheme cleverly, has solved insoluble always this technical barrier of people for a long time.
Description of drawings
Fig. 1 is the structural representation of the present invention that has part 20 cables;
Glue-injection machine structural representation when Fig. 2 adopts liquid silastic to make for part 3 stress cones of the present invention;
Notes rubber machine structural representation when Fig. 3 adopts ethylene propylene diene rubber to make for existing part 3 stress cones.
Embodiment
The present invention is further detailed explanation below in conjunction with drawings and Examples.
Embodiment
As shown in Figure 1, the above power cable dry type of a kind of 500kV and 500kV GIS terminal, include epoxy bushing 1, have spring compression mechanism 2 and the stress cone 3 of spring 2-1, also include outlet gold utensil 4, radome 5 and tail pipe 6, stress cone 3 is contained in the epoxy bushing 1, be provided with spring compression mechanism 2 below the stress cone 3, described stress cone 3 is made by liquid silastic.
As shown in Figure 2; when stress cone 3 of the present invention is made; adopt the two component glue-injection machines of liquid silastic; 100 tons of the glue-injection machine tonnages that needs; the injecting glue function is injected continuously; single can reach more than 300 liters; material with the liquid silicon rubber material of the two components of A component and B component in the manufacturing process is placed on respectively in two packing elements 24 of injector; to expect to annotate in the material pipe 27 by the syringe pump 26 on the injection frame 25; after material mixes through blender 28; be expelled in the die cavity in the mould 29, mould 29 has clamping mechanism 30 lockings, and last mould 29 bakings are made integral prefabricated insulating part 1.
The invention is not restricted to the foregoing description, the technical scheme that all employings are equal to replacement or equivalence replacement formation all belongs to the scope of protection of present invention.
Claims (2)
1. a 500kV and the above power cable dry type of 500kV GIS terminal 500kV and the above power cable dry type of 500kV GIS terminal, include epoxy bushing (1), have the spring compression mechanism (2) and the stress cone (3) of spring (2-1), also include outlet gold utensil (4), radome (5) and tail pipe (6), stress cone (3) is contained in the epoxy bushing (1), be provided with spring compression mechanism (2) below the stress cone (3), it is characterized in that: described stress cone (3) is made by liquid silastic.
2. 500kV according to claim 1 and the above power cable dry type of 500kV GIS terminal, it is characterized in that: described stress cone (3) is made up of electric conductor (3-1) and insulator (3-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010190781 CN102270824B (en) | 2010-06-03 | 2010-06-03 | 500kV and more power cable dry GIS (Global Information System) terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010190781 CN102270824B (en) | 2010-06-03 | 2010-06-03 | 500kV and more power cable dry GIS (Global Information System) terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102270824A true CN102270824A (en) | 2011-12-07 |
| CN102270824B CN102270824B (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010190781 Active CN102270824B (en) | 2010-06-03 | 2010-06-03 | 500kV and more power cable dry GIS (Global Information System) terminal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630786A (en) * | 2013-12-06 | 2014-03-12 | 江苏希波电气科技有限公司 | Dry terminal system of type test for ultrahigh-voltage cables of 500kV and below |
| CN106451314A (en) * | 2016-12-02 | 2017-02-22 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Self-tightening type insulation cover for controlling cable core end |
| CN107359585A (en) * | 2017-08-04 | 2017-11-17 | 江苏中天科技电缆附件有限公司 | A kind of new no epoxy bushing GIS terminal |
Citations (3)
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| CN201345528Y (en) * | 2008-12-12 | 2009-11-11 | 浙江永锦电力器材有限公司 | GIS dry type cable terminal |
| JP2010068664A (en) * | 2008-09-11 | 2010-03-25 | Kansai Electric Power Co Inc:The | Three-core integrated connection box, method of withstand voltage test on test subject cable, and method of assembling three-core integrated connection box |
| CN201690192U (en) * | 2010-06-03 | 2010-12-29 | 江苏安靠超高压电缆附件有限公司 | Dry type GIS terminal for power cable of 500 kV or more |
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2010
- 2010-06-03 CN CN 201010190781 patent/CN102270824B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2010068664A (en) * | 2008-09-11 | 2010-03-25 | Kansai Electric Power Co Inc:The | Three-core integrated connection box, method of withstand voltage test on test subject cable, and method of assembling three-core integrated connection box |
| CN201345528Y (en) * | 2008-12-12 | 2009-11-11 | 浙江永锦电力器材有限公司 | GIS dry type cable terminal |
| CN201690192U (en) * | 2010-06-03 | 2010-12-29 | 江苏安靠超高压电缆附件有限公司 | Dry type GIS terminal for power cable of 500 kV or more |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630786A (en) * | 2013-12-06 | 2014-03-12 | 江苏希波电气科技有限公司 | Dry terminal system of type test for ultrahigh-voltage cables of 500kV and below |
| CN106451314A (en) * | 2016-12-02 | 2017-02-22 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Self-tightening type insulation cover for controlling cable core end |
| CN106451314B (en) * | 2016-12-02 | 2018-07-27 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Self-tightening type controls the insulator cap of cable core end |
| CN107359585A (en) * | 2017-08-04 | 2017-11-17 | 江苏中天科技电缆附件有限公司 | A kind of new no epoxy bushing GIS terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102270824B (en) | 2013-06-19 |
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| PB01 | Publication | ||
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| C53 | Correction of patent of invention or patent application | ||
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Address after: 213333 Tianmu Lake Industrial Park, Liyang Economic Development Zone, Jiangsu, China Applicant after: Jiangsu Ankura Smart Transmission Engineering Technology Co., Ltd. Address before: 213333 Tianmu Lake Industrial Park, Liyang Economic Development Zone, Jiangsu, China Applicant before: Jiangsu Ankura EHV Cable Accessories Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: JIANGSU ANKURA EHV CABLE ACCESSORIES CO., LTD. TO: JIANGSU ANKURA SMART TRANSMISSION ENGINEERING TECHNOLOGY CO., LTD. |
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