CN103456474A - Combined low-voltage bushing of transformer - Google Patents
Combined low-voltage bushing of transformer Download PDFInfo
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- CN103456474A CN103456474A CN2013104544611A CN201310454461A CN103456474A CN 103456474 A CN103456474 A CN 103456474A CN 2013104544611 A CN2013104544611 A CN 2013104544611A CN 201310454461 A CN201310454461 A CN 201310454461A CN 103456474 A CN103456474 A CN 103456474A
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Abstract
The invention discloses a combined low-voltage bushing of a transformer, and belongs to the field of transformer bushings. The combined low-voltage busing of the transformer comprises a conductive rod, a porcelain bushing, a first sealing ring, a second sealing ring, a base and a first nut. A circular truncated cone and a connector lug are integrally formed at one end of the conductive rod. The connector lug is positioned above the circular truncated cone, and the first sealing ring, the porcelain bushing, the second sealing ring and the base are sequentially sleeved below the circular truncated cone. The other end of the conductive rod is provided with an external thread. The first nut is matched with the external thread to compress the base. Production cost of the low-voltage busing of the transformer is reduced, assembly technique is simplified, studs are not required to be welded on a transformer tank wall, incapability of mounting due to inaccurate welding positions is avoided, and good sealing effect is achieved.
Description
Technical field
The present invention relates to a kind of bushing shell for transformer, more particularly, relate to a kind of combined transformer low-tension bushing.
Background technology
Along with developing rapidly of China's power industry, the transformer consumption surges, higher to the requirement of transformer.In the transformer course of work, bushing shell for transformer is one of critical component affected transformer power transmission and transformation service behaviour.At present, bushing shell for transformer is in transformer installation and operation process, because almost all adopting wild card wafer type mounting means, bushing shell for transformer is fixed on the case lid of transformer, there is no integral installation, not only need to manufacture or buy special-purpose wild card and press angle, having improved the cost of manufacture of transformer, and bushing shell for transformer is fixing firm not, it is also not quite convenient that clamp is installed and changed, thereby reduced installation effectiveness and the installation quality of bushing shell for transformer.
As shown in Figure 5, different from the mounting means of bushing shell for transformer on being arranged on the transformer top, in prior art, be installed on low-tension bushing on the oil tank of transformer sidewall when mounted, need welding screw 13 on transformer oil tank wall 5, pressing plate 14 is installed on double-screw bolt 13, utilize nut by clamp sleeve between oil tank wall 5 and pressing plate 14, thereby realize that the installation of transformer low voltage sleeve pipe fixes.This mounting means cost is high, complicated operation, installation effectiveness are low, and usually because of the inaccurate problem that can't install that causes in the position of double-screw bolt 13 welding.
Through retrieval, open for the existing related art scheme of above problem, as Chinese Patent Application No. 201210555779.4, Shen Qing Publication day is on April 17th, 2013, invention and created name is: a kind of bushing of distribution transformer, this application case relates to the transformer equipment technical field, comprise cover plate, bushing, be provided with the sleeve pipe installing hole in the middle of cover plate, the bushing bottom is through the sleeve pipe installing hole on cover plate, be provided with a fixed head at bushing through on the zone of sleeve pipe installing hole, the fixed head two ends are connected with cover plate by the fixed head fastening bolt, the contacted both sides of fixed head and bushing are provided with limit spring.This application case has solved the problem that the bushing shell for transformer installation effectiveness is low, be prone to electric discharge phenomena to a certain extent, but its weak point is: this application case complex structure, fitting operation is more difficult.
Summary of the invention
1. the technical problem that invention will solve
The object of the invention is to overcome the deficiency of transformer low voltage sleeve pipe mounting means backwardness, operating difficulties in prior art, a kind of combined transformer low-tension bushing is provided, adopt technical scheme provided by the invention, not only reduced the manufacturing cost of transformer low voltage sleeve pipe, simplified assembly technology, and do not need welding screw on the transformer oil tank wall, and avoided causing because welding position is inaccurate the problem that can't install, there is good sealing effectiveness simultaneously.
2. technical scheme
For achieving the above object, technical scheme provided by the invention is:
A kind of combined transformer low-tension bushing of the present invention, comprise conducting rod and insulator, also comprise the first sealing ring, the second sealing ring, base and the first nut, described conducting rod one end is one-body molded round platform and connector lug, described connector lug is positioned at the round platform top, and the below of described round platform is sheathed the first sealing ring, insulator, the second sealing ring and base successively, and the described conducting rod other end is with external screw thread, described the first nut matches with above-mentioned external screw thread, compresses base.
Further, described connector lug be shaped as flat, and connector lug is provided with wiring hole.
Further, the upper end of described insulator is provided with the umbrella shape face, and the lower end of described insulator is provided with groove, and described groove matches with the second sealing ring.
Further, described base comprises orthogonal retained part and mating part, and the inwall of described mating part matches with conducting rod, and the outer wall of described mating part matches with the inwall of insulator.
Further, the material of described base is ambroin.
Further, be provided with the first pad between described the first nut and base.
Further, the below of described the first nut is disposed with the second pad, the 3rd pad, the second nut and the 3rd nut, described the second pad and the 3rd pad are sheathed on conducting rod, and described the second nut and the 3rd nut all match with the external screw thread on conducting rod.
Further, described transformer low voltage sleeve pipe is installed on the transformer oil tank wall, and described oil tank wall is between the retained part of the second sealing ring and base, and described the second sealing ring and oil tank wall are sealed and matched.
3. beneficial effect
Adopt technical scheme provided by the invention, compare with existing known technology, there is following remarkable result:
(1) a kind of combined transformer low-tension bushing of the present invention, conducting rod one end is one-body molded has round platform and connector lug, connector lug to be positioned at the round platform top, there is no weld mark, and having avoided, due to the bad local overheating that produces of welding, affects the conduction of conducting rod; The below of round platform is sheathed the first sealing ring, insulator, the second sealing ring and base successively, the conducting rod other end is with external screw thread, the first nut matches with above-mentioned external screw thread, compress base, simple in structure, this transformer low voltage sleeve pipe is installed on the transformer oil tank wall, oil tank wall is between the retained part of the second sealing ring and base, do not need welding screw on oil tank wall, avoided causing because welding position is inaccurate the problem that can't install, simplified assembly technology;
(2) a kind of combined transformer low-tension bushing of the present invention, connector lug be shaped as flat, and connector lug is provided with wiring hole, can with wire, be connected easily, and contact is good;
(3) a kind of combined transformer low-tension bushing of the present invention, the upper end of insulator is provided with the umbrella shape face, and the lower end of insulator is provided with groove, and groove matches with the second sealing ring, is conducive to the location of sealing ring, guarantees to install reliable and good sealing;
(4) a kind of combined transformer low-tension bushing of the present invention, base comprises orthogonal retained part and mating part, the inwall of mating part matches with conducting rod, the outer wall of mating part matches with the inwall of insulator, dwindled physical dimension, reduced the weight of sleeve pipe, the size of user's magnetic isolation plate also can be dwindled simultaneously, has reduced the cost of manufacturing; The material of base is ambroin, is convenient to injection-compression molding, has reduced further manufacturing cost;
(5) a kind of combined transformer low-tension bushing of the present invention, be provided with the first pad between the first nut and base, and fastening bushing shell for transformer, make the installation of sleeve pipe more firm better;
(6) a kind of combined transformer low-tension bushing of the present invention, the below of the first nut is disposed with the second pad, the 3rd pad, the second nut and the 3rd nut, the second pad and the 3rd pad are sheathed on conducting rod, for being connected with the lead-in wire in transformer, the second nut and the 3rd nut all match with the external screw thread on conducting rod, the second nut is for fastening lead-in wire, the 3rd nut can prevent from making lead-in wire loosening because of the second nut rollback on the one hand, on the other hand, utilize the second nut and the larger contact-making surface of the 3rd nut, electric energy is passed to conducting rod better.
The accompanying drawing explanation
Fig. 1 be a kind of combined transformer low-tension bushing of the present invention partly cut open structural representation;
The structural representation that Fig. 2 is the conducting rod in the present invention;
The structural representation that Fig. 3 is the insulator in the present invention;
The structural representation that Fig. 4 is the base in the present invention;
The mounting structure schematic diagram that Fig. 5 is transformer low voltage sleeve pipe of the prior art.
Label declaration in schematic diagram:
1, conducting rod; 101, wiring hole; 102, round platform; 2, the first sealing ring; 3, insulator; 301, umbrella shape face; 302, groove; 4, the second sealing ring; 5, oil tank wall; 6, base; 601, retained part; 602, mating part; 7, the first pad; 8, the first nut; 9, the second pad; 10, the 3rd pad; 11, the second nut; 12, the 3rd nut; 13, double-screw bolt; 14, pressing plate.
Embodiment
For further understanding content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment
In conjunction with Fig. 1 and Fig. 2, a kind of combined transformer low-tension bushing of the present embodiment, comprise conducting rod 1, insulator 3, the first sealing ring 2, the second sealing ring 4, base 6 and the first nut 8, conducting rod 1 one ends are one-body molded round platform 102 and connector lug, connector lug is positioned at round platform 102 tops, there is no weld mark, avoided, due to the bad local overheating that produces of welding, affecting the conduction of conducting rod 1; Connector lug be shaped as flat, and connector lug is provided with wiring hole 101, can with wire, be connected easily, and contact is good.The below of round platform 102 is sheathed the first sealing ring 2, insulator 3, the second sealing ring 4 and base 6 successively, and the radial dimension of round platform 102 is greater than the radial dimension of the first sealing ring 2, has prevented that the first sealing ring 2 is directly exposed in atmosphere for a long time and aging; The two ends of insulator 3 all, with the sealing ring sealing, guarantee that the oil in insulator 3 does not leak, and reach insulation effect better; Conducting rod 1 other end is with external screw thread, and the first nut 8 matches with above-mentioned external screw thread, compresses base 6, simple in structure.As shown in Figure 3, the upper end of the insulator 3 in the present embodiment is provided with umbrella shape face 301, and the lower end of insulator 3 is provided with groove 302, and groove 302 matches with the second sealing ring 4, is conducive to the location of sealing ring, guarantees to install reliable and good sealing.As shown in Figure 4, base 6 comprises orthogonal retained part 601 and mating part 602, the inwall of mating part 602 matches with conducting rod 1, the outer wall of mating part 602 matches with the inwall of insulator 3, dwindled physical dimension, reduced the weight of sleeve pipe, the size of user's magnetic isolation plate also can be dwindled simultaneously, has reduced the cost of manufacturing.The material of the base 6 in the present embodiment is ambroin, and base 6, by injection-compression molding, has reduced manufacturing cost further.
As shown in Figure 1, a kind of combined transformer low-tension bushing of the present embodiment, be provided with the first pad 7 between the first nut 8 and base 6, and fastening bushing shell for transformer, make the installation of sleeve pipe more firm better.The below of the first nut 8 is disposed with the second pad 9, the 3rd pad 10, the second nut 11 and the 3rd nut 12, the second pads 9 and the 3rd pad 10 is sheathed on conducting rod 1, for the lead-in wire with in transformer, is connected; The second nut 11 and the 3rd nut 12 all match with the external screw thread on conducting rod 1, the second nut 11 is for fastening lead-in wire, the 3rd nut 12 can prevent from making lead-in wire loosening because of the second nut 11 rollbacks on the one hand, on the other hand, utilize the second nut 11 and the larger contact-making surface of the 3rd nut 12, electric energy is passed to conducting rod 1 better.
A kind of combined transformer low-tension bushing of the present embodiment is installed on transformer oil tank wall 5, and oil tank wall 5 is between the retained part 601 of the second sealing ring 4 and base 6, and the second sealing ring 4 is sealed and matched with oil tank wall 5.During installation, at first the first sealing ring 2, insulator 3, the second sealing ring 4 are sheathed on conducting rod 1 successively; Then conducting rod 1 is installed in the installing hole of oil tank wall 5 with an externally threaded end, from oil tank of transformer inside, base 6 is set in conducting rod 1, make between the retained part 601 of oil tank wall 5 in the second sealing ring 4 and base 6; The first pad 7 and the first nut 8 are installed successively again, the transformer low voltage sleeve pipe is anchored on transformer oil tank wall 5; The second pad 9, the 3rd pad 10, the second nut 11 and the 3rd nut 12 finally are installed successively, lead-in wire in transformer is connected between the second pad 9 and the 3rd pad 10, by the second nut 11, clamp, the 3rd nut 12 is locking, the user side wire is connected on wiring hole 101, completes the installation of transformer low voltage sleeve pipe.
A kind of combined transformer low-tension bushing of the present invention, with traditional sleeve pipe, compare, not only reduced the manufacturing cost of transformer low voltage sleeve pipe, simplified assembly technology, and do not need welding screw on the transformer oil tank wall, avoided causing because welding position is inaccurate the problem that can't install, there is good sealing effectiveness simultaneously.What deserves to be explained is, a kind of combined transformer low-tension bushing of the present invention, passed through the detection of department of State Grid, meets the instructions for use of transformer low voltage sleeve pipe fully.
Below schematically the present invention and execution mode thereof are described, this description does not have restricted, and shown in accompanying drawing is also one of embodiments of the present invention, and actual structure is not limited to this.So, if those of ordinary skill in the art is enlightened by it, in the situation that do not break away from the invention aim, without the creationary frame mode similar to this technical scheme and the embodiment of designing, all should belong to protection scope of the present invention.
Claims (8)
1. a combined transformer low-tension bushing, comprise conducting rod (1) and insulator (3), it is characterized in that: also comprise the first sealing ring (2), the second sealing ring (4), base (6) and the first nut (8), described conducting rod (1) one end is one-body molded round platform (102) and connector lug, described connector lug is positioned at round platform (102) top, the below of described round platform (102) is sheathed the first sealing ring (2) successively, insulator (3), the second sealing ring (4) and base (6), described conducting rod (1) other end is with external screw thread, described the first nut (8) matches with above-mentioned external screw thread, compress base (6).
2. a kind of combined transformer low-tension bushing according to claim 1 is characterized in that: described connector lug be shaped as flat, and connector lug is provided with wiring hole (101).
3. a kind of combined transformer low-tension bushing according to claim 2, it is characterized in that: the upper end of described insulator (3) is provided with umbrella shape face (301), the lower end of described insulator (3) is provided with groove (302), and described groove (302) matches with the second sealing ring (4).
4. a kind of combined transformer low-tension bushing according to claim 3, it is characterized in that: described base (6) comprises orthogonal retained part (601) and mating part (602), the inwall of described mating part (602) matches with conducting rod (1), and the outer wall of described mating part (602) matches with the inwall of insulator (3).
5. a kind of combined transformer low-tension bushing according to claim 4, it is characterized in that: the material of described base (6) is ambroin.
6. a kind of combined transformer low-tension bushing according to claim 5, is characterized in that: between described the first nut (8) and base (6), be provided with the first pad (7).
7. a kind of combined transformer low-tension bushing according to claim 6, it is characterized in that: the below of described the first nut (8) is disposed with the second pad (9), the 3rd pad (10), the second nut (11) and the 3rd nut (12), it is upper that described the second pad (9) and the 3rd pad (10) are sheathed on conducting rod (1), and described the second nut (11) and the 3rd nut (12) all match with the external screw thread on conducting rod (1).
8. a kind of combined transformer low-tension bushing according to claim 7, it is characterized in that: described transformer low voltage sleeve pipe is installed on transformer oil tank wall (5), described oil tank wall (5) is positioned between the retained part (601) of the second sealing ring (4) and base (6), and described the second sealing ring (4) is sealed and matched with oil tank wall (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310454461.1A CN103456474B (en) | 2013-09-29 | 2013-09-29 | A kind of combined transformer low-tension bushing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310454461.1A CN103456474B (en) | 2013-09-29 | 2013-09-29 | A kind of combined transformer low-tension bushing |
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| CN103456474A true CN103456474A (en) | 2013-12-18 |
| CN103456474B CN103456474B (en) | 2016-03-30 |
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| CN201310454461.1A Active CN103456474B (en) | 2013-09-29 | 2013-09-29 | A kind of combined transformer low-tension bushing |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104200959A (en) * | 2014-09-18 | 2014-12-10 | 桐乡市搏腾贸易有限公司 | Oil immersed transformer |
| CN108777222A (en) * | 2018-06-01 | 2018-11-09 | 江苏盖之宝包装科技有限公司 | A kind of bushing shell for transformer |
| CN109545524A (en) * | 2019-01-10 | 2019-03-29 | 天津兴达电气科技有限公司 | A kind of transformer bushing |
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| CN2521727Y (en) * | 2001-01-01 | 2002-11-20 | 李江峰 | Combined transformer low-voltage binding post |
| CN201622920U (en) * | 2010-03-03 | 2010-11-03 | 许�鹏 | Novel enclosed-type gland-free transformer porcelain bushing |
| CN201655511U (en) * | 2010-04-25 | 2010-11-24 | 熊会珍 | Novel anti-ageing and oil-seepage prevention low-voltage transformer bushing |
| WO2012000181A1 (en) * | 2010-06-30 | 2012-01-05 | 特变电工沈阳变压器集团有限公司 | Single phase transformer for super capacity unclear power station |
| CN203481019U (en) * | 2013-09-29 | 2014-03-12 | 丹阳市金诺电器有限公司 | Combined type transformer low-voltage bushing |
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2013
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4209763A (en) * | 1977-05-16 | 1980-06-24 | Asea Aktiebolag | Induction voltage transformer |
| CN2521727Y (en) * | 2001-01-01 | 2002-11-20 | 李江峰 | Combined transformer low-voltage binding post |
| CN201622920U (en) * | 2010-03-03 | 2010-11-03 | 许�鹏 | Novel enclosed-type gland-free transformer porcelain bushing |
| CN201655511U (en) * | 2010-04-25 | 2010-11-24 | 熊会珍 | Novel anti-ageing and oil-seepage prevention low-voltage transformer bushing |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104200959A (en) * | 2014-09-18 | 2014-12-10 | 桐乡市搏腾贸易有限公司 | Oil immersed transformer |
| CN106373719A (en) * | 2014-09-18 | 2017-02-01 | 合肥龙图腾信息技术有限公司 | Oil-immersed transformer |
| CN104200959B (en) * | 2014-09-18 | 2017-02-15 | 国网浙江台州市黄岩区供电公司 | Oil immersed transformer |
| CN106373719B (en) * | 2014-09-18 | 2017-10-27 | 红光电气集团有限公司 | A kind of oil-filled transformer |
| CN108777222A (en) * | 2018-06-01 | 2018-11-09 | 江苏盖之宝包装科技有限公司 | A kind of bushing shell for transformer |
| CN109545524A (en) * | 2019-01-10 | 2019-03-29 | 天津兴达电气科技有限公司 | A kind of transformer bushing |
| CN109545524B (en) * | 2019-01-10 | 2023-12-26 | 天津兴达电气科技有限公司 | Novel transformer sleeve |
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| Publication number | Publication date |
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| CN103456474B (en) | 2016-03-30 |
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Effective date of registration: 20210426 Address after: No.18, Feiyue Road, industrial concentration zone, Shanghuang Town, Liyang City, Changzhou City, Jiangsu Province Patentee after: Jiangsu Jinnuo Electric Technology Co.,Ltd. Address before: 212300, Jiangsu Province, Zhenjiang City, Danyang Province Lu Town West Fu Village Poplar bridge (Yang Xi No. 64) Patentee before: DANYANG CITY JINNUO ELECTRICAL APPLIANCE Co.,Ltd. |
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Denomination of invention: A combined low voltage bushing for transformer Effective date of registration: 20210526 Granted publication date: 20160330 Pledgee: Jiangsu quanhao Intelligent Electric Co.,Ltd. Pledgor: Jiangsu Jinnuo Electric Technology Co.,Ltd. Registration number: Y2021980003992 |
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Date of cancellation: 20220620 Granted publication date: 20160330 Pledgee: Jiangsu quanhao Intelligent Electric Co.,Ltd. Pledgor: Jiangsu Jinnuo Electric Technology Co.,Ltd. Registration number: Y2021980003992 |
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