CN104376988A - Device and method for connecting high-voltage bushing with high-voltage lead - Google Patents
Device and method for connecting high-voltage bushing with high-voltage lead Download PDFInfo
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- CN104376988A CN104376988A CN201410744746.3A CN201410744746A CN104376988A CN 104376988 A CN104376988 A CN 104376988A CN 201410744746 A CN201410744746 A CN 201410744746A CN 104376988 A CN104376988 A CN 104376988A
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- electric field
- field strength
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- voltage connection
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Abstract
The invention discloses a device for connecting a high-voltage bushing with a high-voltage lead. The device comprises an inner hexagon bolt, a hexagon nut and an electric field intensity improving component. A connection terminal of the high-voltage lead annularly sleeves a screw of the inner hexagon bolt, the hexagon nut is screwed in the screw of the inner hexagon bolt to fasten the connection terminal of the high-voltage lead onto the screw of the inner hexagon bolt, the screw of the inner hexagon bolt extends out of the hexagon nut to be fixedly connected with the high-voltage bushing, the electric field intensity improving component is mounted above the connection terminal of the high-voltage lead and is fastened by the hexagon nut to closely cling to the connection terminal of the high-voltage lead, the head of the inner hexagon bolt is surrounded by the electric field intensity improving component, and the electric field intensity improving component is used for surrounding the head of the inner hexagon bolt, so that corner angles can be prevented for the surrounded portions of the head of the inner hexagon bolt. The device has the advantages that the charge density and the electric field intensity of a joint of the high-voltage bushing and the high-voltage lead can be effectively reduced, accordingly, electric discharge phenomena can be prevented, the service life of the high-voltage bushing can be prolonged, and the safety performance of transformers can be improved. The invention further provides a method for connecting the high-voltage bushing with the high-voltage lead.
Description
Technical field
The present invention relates to jockey and the method for attachment of bushing and high-voltage connection.
Background technology
When conductive surface has an electric charge accumulation, charge density is relevant with the shape of conductive surface.In recessed position charge density close to zero, little in mild position charge density, maximum in property at parts of edges and corners charge density.When after the value that charge density reaches certain, the electric field that electric charge produces can be very large, to such an extent as to air breakdown is produced ionization phenomena.Present stage, inside transformer high-voltage connection and bushing adopt hex nut to lock to be connected, there are corner angle in hex nut as its outer surface of a part of conductor, the large electric field strength of charge density of property at parts of edges and corners is high, to such an extent as to air breakdown is produced ionization phenomena, in air with the charged contrary ion of conductor can with the charging neutrality of conductor, the junction of bushing and high-voltage connection is caused to have electric discharge phenomena to occur discharge spark, and can discharging sound be heard, electric discharge produces a large amount of pernicious gas, while causing environmental pollution, the damage of bushing also brings potential safety hazard to transformer.
Summary of the invention
The jockey of bushing provided by the invention and high-voltage connection, effectively reduce charge density and the electric field strength of bushing and high-voltage connection junction, avoid the generation of electric discharge phenomena, improve the useful life of bushing and the security performance of transformer.The present invention also provides the method for attachment of bushing and high-voltage connection.
For achieving the above object, the technical solution used in the present invention is: the jockey of a kind of bushing and high-voltage connection, comprise hexagon socket head cap screw and hex nut, high-voltage connection binding post ring set is on the screw rod of hexagon socket head cap screw, hex nut screws in and is fastened on the screw rod of hexagon socket head cap screw by high-voltage connection binding post in the screw rod of hexagon socket head cap screw, the conducting rod that the screw rod of hexagon socket head cap screw stretches out hex nut and bushing connectivity port is affixed, characterized by further comprising electric field strength and improve part, described electric field strength is improved part and is arranged on the top of described high-voltage connection binding post and is fitted tightly by fastening with the described high-voltage connection binding post of described hex nut, the head of described hexagon socket head cap screw is improved part by described electric field strength and surrounds, described electric field strength improve part be used for surrounding described in the part of head of hexagon socket head cap screw not there are corner angle.
Preferably, described electric field strength is improved part and is comprised ring pipe and be arranged on the base plate bottom ring pipe, described base plate has connecting through hole, described base plate to be arranged between the head of described hexagon socket head cap screw and described high-voltage connection binding post by connecting through hole and fastening by inner-angle nut, and described ring pipe is enclosed in the outside of described hexagon socket head cap screw head.
Preferably, the head of described hexagon socket head cap screw does not contact with described ring pipe.
Preferably, described ring pipe and base plate are formed in one, the interior ring-shaped of described ring pipe is cylindric, the diameter of described ring pipe inner ring is greater than the external diameter of described hexagon socket head cap screw head, and the cross sectional shape of described ring pipe outer shroud is the ear curve shape that the camber line of multiple decreasing radius is connected in sequence from top to bottom.
Preferably, the cross sectional shape of described ring pipe outer shroud is the ear curve shape that camber line that three radiuses do not wait is connected in sequence from top to bottom, the radius value of the camber line that described three radiuses do not wait is respectively: R1, R2, R3, R1>R2>R3.
The method of attachment of bushing and high-voltage connection, comprises following step poly-:
(1) use electromagnetic simulation software design the electric field strength of bushing and high-voltage connection junction remain can not produce ionization phenomena with air time described in electric field strength improve the shape and size of part, the part making described electric field strength improve the hexagon socket head cap screw head that part is used for described in encirclement does not have corner angle.
(2) shape and size that the described electric field strength drawn according to step poly-() improves part produce the products in kind that described electric field strength improves part.
(3) use improves the corresponding hexagon socket head cap screw of part size and hex nut with described electric field strength, described electric field strength is improved part be arranged on described on corner bolt, again by described high-voltage connection binding post ring set on the screw rod of described hexagon socket head cap screw, described electric field strength is improved top that part is arranged on described high-voltage connection binding post, makes described high-voltage connection binding post and described electric field strength improve part to fit tightly with described hex nut is fastening.
(4) conducting rod described hexagon socket head cap screw being stretched out one end of described hex nut and described bushing connectivity port is affixed, namely completes the connection of high-voltage connection and bushing.
The invention has the beneficial effects as follows that electric field strength is improved part to be contained between high impulse line binding post and hexagon socket head cap screw, in conducting process, electric field strength improves part, hexagon socket head cap screw and hex nut composition conductor, the part that electric field strength improves part encirclement hexagon socket head cap screw head does not have corner angle, electric field can not electric field strength improve part outer surface concentrate, the little electric field strength of charge density that electric field strength improves part surrounding is low, electric field strength improves part by the header circumscribes of hexagon socket head cap screw, hexagon socket head cap screw head surrounding is surrounded the weakened charge density of its electric field strength reduce because being improved part by electric field strength, both the electric field strength of hexagon socket head cap screw outer surface edges and corners weakened, can not ionization phenomena be produced with air and discharge, and the charge density of hex nut outer surface neutralizes mutually and weakens also can not produce ionization phenomena with air because improving part surrounding charge density with electric field strength.Jockey provided by the invention, effectively reduces charge density and the electric field strength of bushing and high-voltage connection junction, avoids the generation of electric discharge phenomena, improves the useful life of bushing and the security performance of transformer.The method of attachment of bushing of the present invention and high-voltage connection, use electromagnetic simulation software to design profile and the size that electric field strength improves part, improve coordinating to assemble and the electric field strength of bushing and high-voltage connection junction being remained at can not produce in the scope of ionization phenomena with air of part and hexagon socket head cap screw and hex nut by electric field strength.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
Fig. 2 is the structural representation that electric field strength improves part
Fig. 3 is the syndeton schematic diagram that electric field strength improves part and hexagon socket head cap screw and hex nut
In figure: 1: hexagon socket head cap screw, 2: hex nut, 3: high-voltage connection binding post, 4:, bushing, 5: electric field strength improves part, 51: ring pipe, 52: base plate, 53: connecting through hole, D1: the annular diameters of ring pipe, D2: the external diameter of hexagon socket head cap screw head, the radius value that the camber line that R1, R2 are different with R3: three radiuses is corresponding.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated.
As shown in Figure 1 to Figure 3, the jockey of a kind of bushing and high-voltage connection, comprise hexagon socket head cap screw 1 and hex nut 2, high-voltage connection binding post 3 ring set is on the screw rod of hexagon socket head cap screw 1, hex nut 2 screws in the screw rod of hexagon socket head cap screw 1 and is fastened on the screw rod of hexagon socket head cap screw 1 by high-voltage connection binding post 3, it is affixed with the conducting rod of bushing 4 connectivity port that the screw rod of hexagon socket head cap screw 1 stretches out hex nut 2, also comprise electric field strength and improve part 5, electric field strength is improved part 5 and is arranged on the top of high-voltage connection binding post 3 and is fitted tightly by the fastening of hex nut 2 and high-voltage connection binding post 3, the head of hexagon socket head cap screw 1 is improved part 5 by described electric field strength and surrounds, electric field strength improves the base plate 52 that part 5 comprises ring pipe 51 and is arranged on bottom ring pipe 51, base plate 52 has connecting through hole 53, base plate 52 to be arranged between the head of hexagon socket head cap screw 1 and high-voltage connection binding post 3 by connecting through hole 53 and fastening by inner-angle nut 2, ring pipe 51 is enclosed in the outside of hexagon socket head cap screw 1 head.The head of hexagon socket head cap screw 1 does not contact with ring pipe 51.Ring pipe 51 and base plate 52 are formed in one, the interior ring-shaped of ring pipe 51 is cylindric, the diameter D1 of ring pipe 51 inner ring is greater than the outer diameter D 2 of described hexagon socket head cap screw 1 head, the cross sectional shape of ring pipe 51 outer shroud is the ear curve shape that camber line that three radiuses do not wait is connected in sequence from top to bottom, the radius value of the camber line that three radiuses do not wait is respectively: R1, R2, R3, R1>R2>R3.
The cross sectional shape of ring pipe 51 outer shroud is three radius values is R1 respectively, the ear curve shape that the camber line of R2 and R3 is connected in sequence from top to bottom, the surface of ring pipe 51 outer shroud is made not have corner angle, electric field can not electric field strength improve part 5 outer surface concentrate, the little electric field strength of charge density that electric field strength improves part 5 surrounding is low, electric field strength improves part 5 by the header circumscribes of hexagon socket head cap screw 1, hexagon socket head cap screw 1 head surrounding is surrounded the weakened charge density of its electric field strength reduce because being improved part 5 by electric field strength, both the electric field strength of hexagon socket head cap screw 1 outer surface edges and corners weakened, and the charge density of hex nut 2 outer surface neutralizes mutually because improving part 5 surrounding charge density with electric field strength and weakens.Wherein R1>R2>R3, be that it is bending maximum in degree minimum profile curvature radius for the ring pipe outer surface of R1 at radius, therefore radius is that the charge density of the ring pipe outer surface of R1 and electric field strength are minimum, the ring pipe 51 external annular surface from top to bottom bending radius of curvature that increases gradually in degree reduces gradually, emulated by the electric field strength of electromagnetic simulation software to bushing and high-voltage connection junction, under the condition of giving rated voltage, accurately calculate R1, the value of R2 and R3, the electric field strength that part 5 reduces hexagon socket head cap screw 1 and hex nut 2 outer surface is improved by electric field strength, the electric field strength of bushing and high-voltage connection junction is controlled to produce within the safe range of ionization phenomena with air.
The method of attachment of bushing and high-voltage connection, comprises following step poly-:
(1) use electromagnetic simulation software design the electric field strength of bushing and high-voltage connection junction remain can not produce ionization phenomena with air time described in electric field strength improve the shape and size of part 5, calculate the value of R1, R2, R3 and D1 accurately, the part making described electric field strength improve hexagon socket head cap screw 1 head that part 5 is used for described in encirclement does not have corner angle.
(2) shape and size that the described electric field strength drawn according to step poly-() improves part 5 produce the products in kind that described electric field strength improves part (5).
(3) use improves the corresponding hexagon socket head cap screw 1 of part 5 size and hex nut 2 with described electric field strength, the outer diameter D 2 of hexagon socket head cap screw 1 head is made to be less than the annular diameters D1 of ring pipe 51, the bolt of hexagon socket head cap screw 1 is improved the connecting through hole 53 on part 5 through electric field strength, again by high-voltage connection binding post 3 ring set on the screw rod of hexagon socket head cap screw 1, fastening on screw rod hex nut 2 being rotated into hexagon socket head cap screw 1, the base plate 52 that electric field strength improves part 5 fits tightly with high-voltage connection binding post 3.
(4) conducting rod hexagon socket head cap screw 1 being stretched out one end of described hex nut 2 and described bushing 4 connectivity port is affixed, namely completes the connection of high-voltage connection and bushing.
Below by reference to the accompanying drawings complete description is carried out to the technical scheme of embodiments of the invention, it should be noted that described embodiment is only a part of embodiment of the present invention.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of protection of the invention.
Claims (6)
1. the jockey of bushing and high-voltage connection, comprise hexagon socket head cap screw (1) and hex nut (2), high-voltage connection binding post (3) ring set is on the screw rod of hexagon socket head cap screw (1), hex nut (2) screws in and is fastened on the screw rod of hexagon socket head cap screw (1) by high-voltage connection binding post (3) in the screw rod of hexagon socket head cap screw (1), it is affixed with the conducting rod of bushing (4) connectivity port that the screw rod of hexagon socket head cap screw (1) stretches out hex nut (2), characterized by further comprising electric field strength and improve part (5), described electric field strength is improved part (5) and is arranged on the top of described high-voltage connection binding post (3) and is fitted tightly by fastening with the described high-voltage connection binding post (3) of described hex nut (2), the head of described hexagon socket head cap screw (1) is improved part (5) by described electric field strength and surrounds, described electric field strength improve part (5) be used for surrounding described in the part of head of hexagon socket head cap screw (1) not there are corner angle.
2. the jockey of bushing according to claim 1 and high-voltage connection, it is characterized in that described electric field strength is improved part (5) and comprised ring pipe (51) and be arranged on the base plate (52) bottom ring pipe (51), described base plate (52) has connecting through hole (53), described base plate (52) is arranged between the head of described hexagon socket head cap screw (1) and described high-voltage connection binding post (3) also fastening by inner-angle nut (2) by connecting through hole (53), described ring pipe (51) is enclosed in the outside of described hexagon socket head cap screw (1) head.
3. the jockey of bushing according to claim 2 and high-voltage connection, is characterized in that the head of described hexagon socket head cap screw (1) does not contact with described ring pipe (51).
4. the jockey of bushing according to claim 3 and high-voltage connection, it is characterized in that described ring pipe (51) and base plate (52) are formed in one, the interior ring-shaped of described ring pipe (51) is cylindric, the diameter of described ring pipe (51) inner ring is greater than the external diameter of described hexagon socket head cap screw (1) head, and the cross sectional shape of described ring pipe (51) outer shroud is the ear curve shape that the camber line of multiple decreasing radius is connected in sequence from top to bottom.
5. the jockey of bushing according to claim 4 and high-voltage connection, it is characterized in that the cross sectional shape of described ring pipe (51) outer shroud is the ear curve shape that is connected in sequence from top to bottom of camber line that three radiuses do not wait, the radius value of the camber line that described three radiuses do not wait is respectively: R1, R2, R3, R1>R2>R3.
6. the method for attachment of bushing and high-voltage connection, comprises following step poly-:
Use electromagnetic simulation software design the electric field strength of bushing and high-voltage connection junction remain can not produce ionization phenomena with air time described in electric field strength improve the shape and size of part (5), the part making described electric field strength improve hexagon socket head cap screw (1) head that part (5) is used for described in encirclement does not have corner angle;
The shape and size that the described electric field strength drawn according to step poly-() improves part (5) produce the products in kind that described electric field strength improves part (5);
Use and improve the corresponding hexagon socket head cap screw (1) of part (5) size and hex nut (2) with described electric field strength, described electric field strength being improved part (5) is arranged on described interior corner bolt (1), again by described high-voltage connection binding post (3) ring set on the screw rod of described hexagon socket head cap screw (1), described electric field strength is improved top that part (5) is arranged on described high-voltage connection binding post (3), make described high-voltage connection binding post (3) and described electric field strength improve part (5) to fit tightly with described hex nut (2) is fastening,
The conducting rod described hexagon socket head cap screw (1) being stretched out one end of described hex nut (2) and described bushing (4) connectivity port is affixed, namely completes the connection of high-voltage connection and bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410744746.3A CN104376988B (en) | 2014-12-09 | 2014-12-09 | The attachment means of bushing and high-voltage connection and method of attachment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410744746.3A CN104376988B (en) | 2014-12-09 | 2014-12-09 | The attachment means of bushing and high-voltage connection and method of attachment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104376988A true CN104376988A (en) | 2015-02-25 |
| CN104376988B CN104376988B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410744746.3A Active CN104376988B (en) | 2014-12-09 | 2014-12-09 | The attachment means of bushing and high-voltage connection and method of attachment |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2485850Y (en) * | 2001-03-30 | 2002-04-10 | 贾传熙 | Organic composite wall-through casing for high voltage |
| JP3372984B2 (en) * | 1993-03-26 | 2003-02-04 | 株式会社東芝 | Bushing shield device |
| CN201549287U (en) * | 2009-10-29 | 2010-08-11 | 保定天威集团有限公司 | Thirty-five KV-level pure porcelain bushing |
| CN103219688A (en) * | 2013-04-23 | 2013-07-24 | 常州市拓源电缆成套有限公司 | Porcelain sleeve type cable terminal |
| CN204204590U (en) * | 2014-12-09 | 2015-03-11 | 南车株洲电机有限公司 | The jockey of a kind of bushing and high-voltage connection |
-
2014
- 2014-12-09 CN CN201410744746.3A patent/CN104376988B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3372984B2 (en) * | 1993-03-26 | 2003-02-04 | 株式会社東芝 | Bushing shield device |
| CN2485850Y (en) * | 2001-03-30 | 2002-04-10 | 贾传熙 | Organic composite wall-through casing for high voltage |
| CN201549287U (en) * | 2009-10-29 | 2010-08-11 | 保定天威集团有限公司 | Thirty-five KV-level pure porcelain bushing |
| CN103219688A (en) * | 2013-04-23 | 2013-07-24 | 常州市拓源电缆成套有限公司 | Porcelain sleeve type cable terminal |
| CN204204590U (en) * | 2014-12-09 | 2015-03-11 | 南车株洲电机有限公司 | The jockey of a kind of bushing and high-voltage connection |
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| Publication number | Publication date |
|---|---|
| CN104376988B (en) | 2016-08-17 |
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