CN104821214A - Solid insulation terminal for liquid-immersed electric power equipment leading-out line - Google Patents
Solid insulation terminal for liquid-immersed electric power equipment leading-out line Download PDFInfo
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- CN104821214A CN104821214A CN201510174298.2A CN201510174298A CN104821214A CN 104821214 A CN104821214 A CN 104821214A CN 201510174298 A CN201510174298 A CN 201510174298A CN 104821214 A CN104821214 A CN 104821214A
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Abstract
The invention discloses a solid insulation terminal for a liquid-immersed electric power equipment leading-out line, which comprises a metal tube. The head of the metal tube is provided with an end plate. An insulator is poured and solidified outside the end plate. A metal mounting base is arranged outside the insulator. The top of the insulator is provided with a copper sealing and fixing end which is connected with the end plate. Furthermore the copper sealing and fixing end is connected with a leading-out line joint copper guiding rod which is arranged in the metal tube. According to the solid insulation terminal, the metal mounting base and the metal tube are used as a sleeve insulation terminal frame. Epoxy resin is used as a main insulating material. Pressure gel technology is used for pouring the epoxy resin on the metal tube for forming the insulating body of the sleeve, and a voltage equalizer ball is arranged at the lower part of the sleeve, thereby forming a cable penetrating type solid insulation terminal which is suitable for middle and high voltage grades (66kV and higher voltage). The solid insulation terminal has advantages of simple structure, small number of raw material kinds, easy manufacture, convenient quality control in batch production, no potential hazard of oil combustion or explosion, small amount of local discharge and high mechanical strength.
Description
Technical field
The present invention relates to power equipment assembly field, particularly relate to a kind of immersion power equipment lead-out wire solid insulation terminal.
Background technology
The lead-in wire leading-out terminal of liquid immersion type power equipment, also known as sleeve pipe or insulator, is the assembly of liquid immersion type power equipment indispensability.Paper condenser structure mostly is for many years at the lead-in wire sleeve pipe of liquid immersion type power equipment as transformer and reactor generally adopt of mesohigh (such as 66kV-220kV), the interior insulation of such sleeve pipe is typical capacitance type structure, the oilpaper capacitor core be made up of high-tension cable paper and conductive metal foil.This capacitor core conductor is in maximum potential at the center of sleeve pipe, and its outermost is earth potential close to ground connection mounting flange place; And its outside is umbrella insulator, transformer oil is placed in insulator inside, and capacitor core is immersed in transformer oil; The oil conservator of a special sleeve pipe oil volume expansion compensation is placed in sleeve upper end, forms the basic structure of such sleeve pipe thus.Obviously, this type of sleeve pipe also exists complex structure, and constituent material is various, and process equipment requires high, the obvious defect of the wayward grade of workmanship; Simultaneously owing to being oil-filled structure in insulator, the hidden danger that inevitably there is leakage of oil and fire.Operating experience for many years shows that more than 80% of power equipment fire is caused by oil filled bushing seepage.Thus dry oil-free casing becomes a kind of objective demand.
In the patent No. be: 201010292041.4, patent name is: in the Chinese patent of dry type high-voltage capacitor core and manufacture method thereof, uses it discloses a kind of condenser type fuse technology be alternately wound around by glass layer and metal forming or wire netting in sleeve technology; At the insulator of the outside of this capacitor core suit silicon rubber, form dry oil-free casing.Although this technology achieves the dry type non-oil ultra high vacuum system of sleeve pipe, but its still essence continued traditional capacitance type structure, its result remains the complex structure of sleeve pipe, manufacturing equipment is complicated, and technical process is loaded down with trivial details, and raw material constituent is many, quality control difficulty is large, removal of bubbles difficulty in winding process, partial discharge controls difficult, and product cost is expensive.
And pure epoxy resin cast dry sleeve has obtained exploitation on low voltage power equipment, see that the patent No. is: 201320376108.1, patent name is: the Chinese patent of non-capacitive dry sleeve, one of its main feature is that epoxy resin casts directly on conducting rod, and its mounting structure is also epoxide resin material pedestal.And according to its content describe and show, up to the present this technology is only applicable to the sleeve pipe of 35kV and following electric pressure.
Summary of the invention
Technical problem to be solved by this invention is, there is provided a kind of lead-in wire ejector structure of liquid immersion type power equipment that can make simple, manufacture mechanization degree high, dependable performance is advanced, install simple and convenient, without oil without the immersion power equipment lead-out wire solid insulation terminal firing hidden danger.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions: a kind of immersion power equipment lead-out wire solid insulation terminal, comprise the metal catheter be made up of metallic aluminium or its alloy material, the head of described metal catheter is provided with end plate, center is provided with to be common to mutually with its two ends and connects the hollow of power equipment lead-out wire, it is the insulator that main component is made that the outside of described metal catheter has by outdoor epoxy resin by pressure gel technology cast cured explosive, the outer setting of described insulator has the metal mounting seat be made up of the alloy material of metallic aluminium, the part described insulator is positioned at above metal installation base is multi-layer umbrella skirt, the part be positioned at below metal installation base is cylindric, the top being wherein positioned at insulator is provided with the copper be fixedly connected with end plate and seals fixing termination, and the fixing termination of this copper sealing be arranged on the hollow interior pinout connector copper guide rod of metal catheter and be connected.
As preferably, the outer surface smoother of described metal catheter or the shallow pit shape be evenly distributed or shallow striped grid shape or spraying layer of conductive material layer or be encapsulated with the thin epoxy resin layer of glass fiber reinforcement.
As preferably, in described insulator, be provided with multiple-layer horizontal or vertical epoxy resin scrim layer and fiberglass cloth.
As preferably, be provided with capacitor layers in described insulator, described capacitor layers is the metal foil layer vertically placed of multilayer or metal net layer or semiconductor lamella, is the material of insulator itself between described metal foil layer or between metal net layer or between semiconductor layer.
As preferably, between described metal foil layer or between metal net layer or between semiconductor layer insulator material in be provided with epoxy resin scrim layer or fiberglass cloth.
As preferably, the outer surface of described insulator top full skirt shape and lower cylindrical is coated with overcoat.
As preferably, the overcoat on described insulator top full skirt shape is layer of silica gel or nanometer radiating insulating layer, and the overcoat on insulator lower cylindrical is insulating varnish layer or nanometer radiating insulating layer, and the thickness of described overcoat is greater than 0.5mm.
As preferably, the end of described metal catheter is provided with voltage equalizing ball, and this voltage equalizing ball to be wrapped in insulator or exposed in insulator exterior.
As preferably, described voltage equalizing ball structure is that metal thin plate calendaring is spherical or for band endoporus and outer ring changes into the metallic plate of arc-shaped.
As preferably, upstanding portion in described metal mounting seat be wrapped in insulator or its outer surface exposed in insulator exterior, the surface smoothing that metal mounting seat contacts with insulator or the thin epoxy resin layer spraying layer of conductive material layer or be encapsulated with glass fiber reinforcement or the shallow pit shape be evenly distributed or shallow striped grid shape, horizontal component in metal installation base is provided with multiple installing hole, a steam vent and multiple reinforcement, wherein two reinforcements is respectively provided with a lifting hole(eyelet); When insulator inside is provided with capacitor layers, the upstanding portion in described metal installation base is provided with the ground screen device be connected with capacitor layers outermost layer.
Compared with prior art, usefulness of the present invention is: this immersion power equipment lead-out wire solid insulation terminal adopts metal mounting seat and metal catheter to be sleeve pipe insulated terminal skeleton, employing epoxy resin is predominating insulation, pressure gel technology is utilized poured with epoxy resin to be formed on metal catheter the insulating body of sleeve pipe, casing part arranges voltage equalizing ball, constitutes cable formula of the wearing dry solid sleeve pipe insulated terminal being applicable to mesohigh (66kV and above) power equipment; Its structure is simple, and raw material types is few, and processing and manufacturing is easy, and batch production quality control is convenient, and without oil without firing hidden danger, partial discharge quantity is little, and mechanical strength is high.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is a kind of immersion power equipment of the present invention lead-out wire solid insulation terminal outer structural representation;
Fig. 2 is a kind of immersion power equipment of the present invention lead-out wire solid insulation terminal plan structure schematic diagram;
Fig. 3 is the structure cutaway view of A-A in Fig. 2;
Fig. 4 is the partial enlarged drawing of B in Fig. 3;
Fig. 5 is the partial enlarged drawing of C in Fig. 3;
Fig. 6 is the structural representation of metal catheter in a kind of immersion power equipment of the present invention lead-out wire solid insulation terminal;
Fig. 7 is the structural representation of the fixing termination of copper sealing in a kind of immersion power equipment of the present invention lead-out wire solid insulation terminal;
Fig. 8 is the structural representation of pinout connector copper guide rod in a kind of immersion power equipment of the present invention lead-out wire solid insulation terminal;
Fig. 9 is a kind of immersion power equipment of the present invention lead-out wire solid insulation terminal die structural representation;
Figure 10 is the structural representation adding capacitor layers in a kind of immersion power equipment of the present invention lead-out wire solid insulation anchor insulator.
In figure: 1, metal catheter; 11, end plate; 12, voltage equalizing ball; 2, insulator; 3, pinout connector copper guide rod; 4, the fixing termination of copper sealing; 5, metal installation base; 51, installing hole; 6, the first mould; 7, the second mould; 8, capacitor layers.
Embodiment
Describe the present invention below in conjunction with the drawings and the specific embodiments:
Fig. 1, a kind of immersion power equipment lead-out wire solid insulation terminal shown in Fig. 2 and Fig. 3, comprise the metal catheter 1 be made up of metallic aluminium or its alloy material, as shown in Figure 6, the head of described metal catheter 1 is provided with end plate 11, described end plate 11 is made up of metallic aluminium or aluminium alloy, the similar thermal expansion coefficient of its thermal coefficient of expansion and insulator 2, the center of described metal catheter 1 is provided with to be common to mutually with its two ends and connects the hollow of power equipment lead-out wire, the outside of described metal catheter 1 by vacuum pressure gelation technology cast cured explosive have by have by outdoor epoxy resin be main component make insulator 2, and be added with curing agent in described outdoor epoxy resin, the auxiliary material such as flexibilizer, the thermal coefficient of expansion of described insulator 2 and the similar thermal expansion coefficient of metal catheter 1, be provided with multiple-layer horizontal or vertical epoxy resin scrim layer and fiberglass cloth in insulator 2 or be provided with capacitor layers 8, as shown in Figure 10, the metal foil layer that described capacitor layers 8 is vertically placed for multilayer or metal net layer or semiconductor lamella, it is the material of insulator 2 itself between described metal foil layer or between metal net layer or between semiconductor layer, or be provided with epoxy resin scrim layer or fiberglass cloth in the material of described insulator 2 simultaneously, the outer surface smoother of described metal catheter 1 or the shallow pit shape be evenly distributed or shallow striped grid shape or spraying layer of conductive material layer or be encapsulated with the thin epoxy resin of glass fiber reinforcement, as shown in Figure 4, the outer setting of described insulator 2 has the metal mounting seat 5 be made up of the alloy material of metallic aluminium, the thermal coefficient of expansion of described metal mounting seat 5 and the similar thermal expansion coefficient of insulator 2, upstanding portion in described metal mounting seat 5 be wrapped in insulator 2 or its outer surface exposed outside at insulator 2, the surface smoothing that metal mounting seat 5 contacts with insulator 2 or the thin epoxy resin layer spraying layer of conductive material layer or be encapsulated with glass fiber reinforcement or the shallow pit shape be evenly distributed or shallow striped grid shape, horizontal component in metal installation base 5 is provided with multiple installing hole 51, a steam vent and multiple reinforcement, wherein two reinforcements are respectively provided with a lifting hole(eyelet), be convenient to install, when insulator 2 inside is provided with capacitor layers 8, the upstanding portion in described metal installation base 5 is provided with the ground screen device be connected with capacitor layers 8 outermost layer, on described insulator 2, the part be positioned at above metal installation base 5 is multi-layer umbrella skirt, and the part be positioned at below metal installation base 5 is cylindric, and the outer surface of described insulator 2 top full skirt shape and lower cylindrical is exposed or be coated with overcoat, when spraying overcoat, the overcoat on the full skirt shape of insulator 2 top is layer of silica gel or nanometer radiating insulating layer, and the overcoat on insulator 2 lower cylindrical is insulating varnish layer or nanometer radiating insulating layer, and the thickness of described overcoat is greater than 0.5mm, as shown in Figure 7 and Figure 8, the top being wherein positioned at insulator 2 is provided with the copper be fixedly connected with end plate 11 and seals fixing termination 4, and the fixing termination 4 of this copper sealing be arranged on the hollow interior pinout connector copper guide rod 3 of metal catheter 1 and be connected, as shown in Figure 5, the end of described metal catheter 1 is provided with voltage equalizing ball 12, and this voltage equalizing ball 12 is made up of metallic aluminium or aluminium alloy, the similar thermal expansion coefficient of its thermal coefficient of expansion and insulator 2, and to be wrapped in insulator 2 or exposed outside at insulator 2, and its structure to be metal thin plate calendaring spherical or for band endoporus and outer ring changes into the metallic plate of arc-shaped, when electric pressure is lower, this voltage equalizing ball 12 can be very little or cancel.
The manufacture of this immersion power equipment lead-out wire solid insulation terminal is as follows, as shown in Figure 9, when the casting insulated body 2 of employing vacuum pressure gelation technology, the two ends of metal catheter 1 are blocked temporarily, with metal catheter 1 and metal mounting seat 5 for skeleton, be arranged on the mould that is made up of the first mould 6 and the second mould 7, in the cavity of insulator 2 position of mould, uniform intervals is placed or is wound around epoxy resin grid cloth, and appropriate grid cloth is filled in the full skirt position of mould; Wherein the first mould 6 is fixed together with metal mounting seat 5 above metal mounting seat 5, for the multilayer umbrella part of casting insulated body 2; Second mould 7 is fixed together in the below of metal mounting seat 5 and metal mounting seat 5, for the circular cylinder shaped portion of casting insulated body 2; The mould assembled and metal mounting seat 5 are arranged on forcing press, and are communicated with the equipment such as feeding machine, by vacuum pressure gelation technology, the epoxy resin containing the auxiliary material such as curing agent and softening agent prepared is injected mould molding; Reach technological requirement and after the time, withdraw from device from forcing press, remove mould, afterwards by operations such as pour mass surface treatment, solidification, sprayed surface paints, copper sealing is finally installed and fixes termination 4, complete product manufacturing.
This immersion power equipment lead-out wire solid insulation terminal adopts metal mounting seat 5 and metal catheter 1 to be sleeve pipe insulated terminal skeleton, outdoor special epoxy resin is adopted to be predominating insulation, vacuum pressure gelation technology is utilized poured with epoxy resin to be formed on metal catheter 1 insulating body of sleeve pipe, casing part arranges voltage equalizing ball 12, constitutes brand-new cable formula of the wearing dry solid sleeve pipe insulated terminal being applicable to mesohigh (66kV and above) power equipment; Its structure is simple, and raw material types is few, and processing and manufacturing is easy, and batch production quality control is convenient, and without oil without firing hidden danger, partial discharge quantity is little, and mechanical strength is high.
It is emphasized that: be only preferred embodiment of the present invention above, not any pro forma restriction is done to the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. an immersion power equipment lead-out wire solid insulation terminal, it is characterized in that: comprise the metal catheter (1) be made up of metallic aluminium or its alloy material, the head of described metal catheter (1) is provided with end plate (11), center is provided with to be common to mutually with its two ends and connects the hollow of power equipment lead-out wire, it is the insulator (2) that main component is made that the outside of described metal catheter (1) has by outdoor epoxy resin by pressure gel technology cast cured explosive, the outer setting of described insulator (2) has the metal mounting seat (5) be made up of the alloy material of metallic aluminium, the part described insulator (2) being positioned at metal installation base (5) top is multi-layer umbrella skirt, the part being positioned at metal installation base (5) below is cylindric, the top being wherein positioned at insulator (2) is provided with the copper be fixedly connected with end plate (11) and seals fixing termination (4), and the fixing termination (4) of this copper sealing be arranged on the hollow interior pinout connector copper guide rod (3) of metal catheter (1) and be connected.
2. immersion power equipment lead-out wire solid insulation terminal according to claim 1, is characterized in that: the outer surface smoother of described metal catheter (1) or the shallow pit shape be evenly distributed or shallow striped grid shape or spraying layer of conductive material layer or be encapsulated with the thin epoxy resin layer of glass fiber reinforcement.
3. immersion power equipment lead-out wire solid insulation terminal according to claim 1, is characterized in that: be provided with multiple-layer horizontal or vertical epoxy resin scrim layer and fiberglass cloth in described insulator (2).
4. immersion power equipment lead-out wire solid insulation terminal according to claim 1, it is characterized in that: in described insulator (2), be provided with capacitor layers (8), the metal foil layer that described capacitor layers (8) is vertically placed for multilayer or metal net layer or semiconductor lamella are the material of insulator (2) itself between described metal foil layer or between metal net layer or between semiconductor layer.
5. immersion power equipment lead-out wire solid insulation terminal according to claim 4, is characterized in that: between described metal foil layer or between metal net layer or between semiconductor layer insulator (2) material in be provided with epoxy resin scrim layer or fiberglass cloth.
6. immersion power equipment lead-out wire solid insulation terminal according to claim 1, is characterized in that: the outer surface of described insulator (2) top full skirt shape and lower cylindrical is coated with overcoat.
7. immersion power equipment lead-out wire solid insulation terminal according to claim 6, it is characterized in that: the overcoat on described insulator (2) top full skirt shape is layer of silica gel or nanometer radiating insulating layer, overcoat on insulator (2) lower cylindrical is insulating varnish layer or nanometer radiating insulating layer, and the thickness of described overcoat is greater than 0.5mm.
8. immersion power equipment lead-out wire solid insulation terminal according to claim 1, it is characterized in that: the end of described metal catheter (1) is provided with voltage equalizing ball (12), it is interior or exposed outside at insulator (2) that this voltage equalizing ball (12) is wrapped in insulator (2).
9. immersion power equipment lead-out wire solid insulation terminal according to claim 8, is characterized in that: described voltage equalizing ball (12) structure is that metal thin plate calendaring is spherical or for band endoporus and outer ring changes into the metallic plate of arc-shaped.
10. immersion power equipment lead-out wire solid insulation terminal as claimed in any of claims 1 to 9, it is characterized in that: the upstanding portion on described metal mounting seat (5) be wrapped in insulator (2) or its outer surface exposed outside at insulator (2), metal mounting seat (5) goes up the surface smoothing or the thin epoxy resin layer spraying layer of conductive material layer or be encapsulated with glass fiber reinforcement or the shallow pit shape be evenly distributed or shallow striped grid shape that contact with insulator (2), horizontal component in metal installation base (5) is provided with multiple installing hole (51), a steam vent and multiple reinforcement, wherein two reinforcements are respectively provided with a lifting hole(eyelet), when insulator (2) inside is provided with capacitor layers (8), the upstanding portion in described metal installation base (5) is provided with the ground screen device be connected with capacitor layers (8) outermost layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510174298.2A CN104821214B (en) | 2015-04-14 | 2015-04-14 | A kind of immersion power equipment lead-out wire solid insulation terminal |
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| CN201510174298.2A CN104821214B (en) | 2015-04-14 | 2015-04-14 | A kind of immersion power equipment lead-out wire solid insulation terminal |
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| CN104821214A true CN104821214A (en) | 2015-08-05 |
| CN104821214B CN104821214B (en) | 2017-11-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118631A (en) * | 2015-09-25 | 2015-12-02 | 苏州翰为电气科技有限公司 | Dry-type insulating sleeve |
| CN108469579A (en) * | 2018-05-04 | 2018-08-31 | 扬州森源电力科技有限公司 | Switchgear male-tapered casing high pressure tests terminal |
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| CN201392722Y (en) * | 2009-04-24 | 2010-01-27 | 西安爱博电气有限公司 | Resin impregnated paper capacitor-type transformer bushing |
| CN103563013A (en) * | 2011-05-27 | 2014-02-05 | Abb技术有限公司 | Electric component for a high-voltage system |
| CN203481018U (en) * | 2013-09-26 | 2014-03-12 | 中国西电电气股份有限公司 | Resin-impregnated paper high-voltage capacitance bushing for converter transformer |
| CN204516506U (en) * | 2015-04-14 | 2015-07-29 | 苏州翰为电气科技有限公司 | Immersion power equipment lead-out wire solid insulation terminal |
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2015
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572141A (en) * | 2008-05-04 | 2009-11-04 | 黄维枢 | Cascade high-voltage bushing |
| CN201392722Y (en) * | 2009-04-24 | 2010-01-27 | 西安爱博电气有限公司 | Resin impregnated paper capacitor-type transformer bushing |
| CN103563013A (en) * | 2011-05-27 | 2014-02-05 | Abb技术有限公司 | Electric component for a high-voltage system |
| CN203481018U (en) * | 2013-09-26 | 2014-03-12 | 中国西电电气股份有限公司 | Resin-impregnated paper high-voltage capacitance bushing for converter transformer |
| CN204516506U (en) * | 2015-04-14 | 2015-07-29 | 苏州翰为电气科技有限公司 | Immersion power equipment lead-out wire solid insulation terminal |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118631A (en) * | 2015-09-25 | 2015-12-02 | 苏州翰为电气科技有限公司 | Dry-type insulating sleeve |
| CN108469579A (en) * | 2018-05-04 | 2018-08-31 | 扬州森源电力科技有限公司 | Switchgear male-tapered casing high pressure tests terminal |
| CN108469579B (en) * | 2018-05-04 | 2024-04-30 | 扬州森源电力科技有限公司 | High-voltage testing terminal for external conical sleeve of switch cabinet |
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| CN104821214B (en) | 2017-11-03 |
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Effective date of registration: 20230628 Address after: 102600 Room 403, unit 1, 15th floor, changfengyuan, Huangcun Town, Daxing District, Beijing Patentee after: Du Lihong Address before: 4-305, No. 18, Suzhou River Road, the Taihu Lake New Town, Wujiang District, Suzhou City, Jiangsu Province, 215200 Patentee before: SUZHOU HANWEI ELECTRICAL SCIENCE & TECHNOLOGY CO.,LTD. |
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