CN103268847B - Fuse with sleeve structure and mounting method - Google Patents
Fuse with sleeve structure and mounting method Download PDFInfo
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- CN103268847B CN103268847B CN201210518308.6A CN201210518308A CN103268847B CN 103268847 B CN103268847 B CN 103268847B CN 201210518308 A CN201210518308 A CN 201210518308A CN 103268847 B CN103268847 B CN 103268847B
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Abstract
The invention provides a fuse with a sleeve structure and a mounting method, aims to overcome the defects that a transformer leaks oil and is easily subjected to hot-line work, caused by installation manners of a sleeve and a fuse of a transformer in the prior art, and provides the fuse with the sleeve structure. The sleeve comprises an inner sleeve, an outer sleeve and a sleeve inner protection cover, wherein the inner sleeve is internally provided with a fuse inserting hole; the fuse is inserted into the fuse inserting hole; the sleeve inner protection cover covers outside the inner sleeve and tightly presses the fuse; the outer sleeve covers the inner sleeve and the sleeve inner protection cover; and the outer sleeve is fixedly connected with the inner sleeve. The invention further provides a mounting method of the fuse. The mounting method comprises the following steps: A, inserting the fuse into the inner sleeve; B, fastening the fuse into the inner sleeve; C, fixedly mounting the fuse with the sleeve structure on a box body of the transformer; D, electrically connecting a power cable and the fuse; and E, electrically connecting a high-voltage side winding with the fuse. According to the fuse with the sleeve structure and the mounting method disclosed by the invention, the volume of the transformer is reduced and the risk of leaking oil is reduced; and the fuse is applicable to the circumstance using the transformer.
Description
Technical field
The present invention relates to a kind of inside transformer components and parts, particularly relate to fuse and the installation method of the band sleeve structure of 35kV and the use of following transformer.
Background technology
At present, the sleeve pipe that 35kV and following transformer use and fuse are two covering devices be arranged on respectively in oil-filled transformer casing, electric wire one end in sleeve pipe is external and cable electrical connection at transformer tank, the other end insulate under oil guard and fuse series connection in transformer-cabinet, and the fuse other end is linked into high voltage side of transformer winding again.Usual 35kV and following transformer use three groups of sleeve pipes and fuse, need on transformer-cabinet, to open six holes for mounting sleeve and fuse, not only increase the volume of transformer, also improve the leakage of oil risk of transformer-cabinet.Because sleeve pipe and fuse are independent installations, when changing fuse, cut off the electricity supply if forgotten, just there will be hot line job, all potential safety hazard is formed to the person and equipment.Visible, existing 35kV and following transformer, required device is many, installs difficulty, efficiency is low and easily causes the serious accidents such as transformer leakage of oil, easily hot line job, add the dangerous operation risk of transformer.
Summary of the invention
The first object of the present invention is that the mounting means of the sleeve pipe and fuse overcoming transformer of the prior art easily causes the shortcoming of the serious accidents such as transformer leakage of oil, easily hot line job, provides a kind of fuse with sleeve structure.
The second object of the present invention is that the mounting means of the sleeve pipe and fuse overcoming transformer of the prior art easily causes the shortcoming of the serious accidents such as transformer leakage of oil, easily hot line job, provides a kind of installation method of above-mentioned fuse.
The technical scheme that the present invention realizes the first goal of the invention employing is: a kind of fuse with sleeve structure, this fuse comprises fuse skin, quartz sand, the winding switching end metal guide block at fuse conductor and fuse two ends and cable connection end metal guide block, also comprise sleeve pipe, described sleeve pipe comprises inner sleeve, cover is protected in outer tube and sleeve pipe, fuse patchhole is provided with in inner sleeve, the inner wall size of fuse patchhole is corresponding with the outer wall dimension of fuse, the outer wall dimension of inner sleeve one end is corresponding with the inner wall size of outer tube one end, the inner wall size of protecting cover in sleeve pipe is corresponding with the outer wall dimension of inner sleeve one end, in sleeve pipe, the bottom surface of guarantor's cover is provided with the through hole that power cable passes, fuse inserts in the fuse patchhole of inner sleeve, the winding switching end metal guide block of fuse contacts with the bottom surface of fuse patchhole, the cable connection end metal guide block of fuse is positioned at an end face edge of inner sleeve, protecting in sleeve pipe is set between inner sleeve and outer tube, protect cover in sleeve pipe to be made by insulating material, protect cover in sleeve pipe and be wrapped in inner sleeve and compress the cable connection end metal guide block of fuse outward, outer tube one end wraps in inner sleeve and sleeve pipe and protects cover, outer tube is fixedly connected with inner sleeve.
The technical scheme that the present invention realizes the second goal of the invention employing is: a kind of installation method of fuse of above-mentioned band sleeve structure, comprises the following steps:
A. fuse is inserted in the fuse patchhole of inner sleeve along the perforate of inner sleeve one end;
B. be wrapped in by outer tube outside the perforate of the inner sleeve one end described in steps A, outer tube is fixedly connected with inner sleeve, and clamped by fuse and be fixed in the fuse patchhole of inner sleeve, insulation processing is done in the gap between outer tube and inner sleeve;
C. be fixedly mounted on the casing of transformer by the fuse of band sleeve structure, inner sleeve one end is inserted in the casing of transformer, and outer tube is arranged on outside the casing of transformer;
D. the link of power cable inserts in outer tube and is electrically connected with the metal guide block of fuse one end;
E. the link of high-pressure side winding inserts in inner sleeve and is electrically connected with the metal guide block of fuse one end, and electric connecting terminal carries out encapsulation process.
The invention has the beneficial effects as follows: sleeve pipe and fuse become one by the present invention, fuse sealing is arranged in sleeve pipe, realizes the protection of electrical connection between power cable and high voltage side of transformer winding and transformer.Because fuse is fixed in sleeve pipe to become to be integrated, the transformer of one group of sleeve pipe and fuse is used only to need on transformer-cabinet, open a hole, decrease the volume of transformer, reduce the leakage of oil risk of transformer-cabinet, meanwhile, when changing fuse, must cut off the electricity supply and disconnect the connection of sleeve pipe and power cable, fuse is taken out, eliminates the hidden danger of hot line job, change safer.The fuse of band sleeve structure of the present invention, not by the impact of the factors such as High aititude, environment filth, air humidity, apparatus adaptability is strong.In the transformer of identical capacity, decrease the installation of 50% device, reduce the danger that transformer insulation oil is revealed, improve the safety in utilization of integral device.
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the structural representation of the fuse of band sleeve structure of the present invention.
Fig. 2 is the structural representation of the inner sleeve of the fuse of band sleeve structure of the present invention.
Fig. 3 is the structural representation of the fuse of the fuse of band sleeve structure of the present invention.
Fig. 4 is the interior structural representation protecting cover of sleeve pipe of the fuse of band sleeve structure of the present invention.
Fig. 5 is the structural representation of the outer tube of the fuse of band sleeve structure of the present invention.
Fig. 6 is the fuse installation diagram on the transformer of band sleeve structure of the present invention.
Fig. 7 is the using state schematic diagram of the fuse of band sleeve structure of the present invention.
Fig. 8 is the flow chart of installation method of the present invention.
In accompanying drawing, 1 is inner sleeve, 1-1 is fuse patchhole, 1-2 is boss, 1-3 is external screw thread, 2 is fuse, 2-1 is that fuse is outer, 2-2 is cable connection end metal guide block, 2-3 is screwed hole, 2-4 is quartz sand, 2-5 is fuse conductor, 2-6 is winding switching end metal guide block, 3 is protect cover in sleeve pipe, 3-1 is through hole, 4 is outer tube, 4-1 is cable connector patchhole, 5 is high-pressure side winding switching device, 6 is insulating oil, 7 is the casing of transformer, 8 is flange, 9 is casing seat pressing plate, 10 is set bolt, 11 is nut, 12 is cable connector, 13 is sealing ring.
Embodiment
As shown in accompanying drawing 1 to 7, a kind of fuse with sleeve structure of the present embodiment, this fuse 2 comprises fuse outer 2-1, quartz sand 2-4, the winding switching end metal guide block 2-6 at fuse conductor 2-5 and fuse two ends and cable connection end metal guide block 2-2.Quartz sand 2-4 is arranged between fuse conductor 2-5 and the outer 2-1 of fuse, and winding switching end metal guide block 2-6 and cable connection end metal guide block 2-2 is separately fixed on the outer 2-1 of fuse, and fuse 2 forms a closed structure.Also comprise sleeve pipe, described sleeve pipe comprises in inner sleeve 1, outer tube 4 and sleeve pipe protects cover 3.Be provided with fuse patchhole 1-1 in inner sleeve 1, the inner wall size of fuse patchhole 1-1 is corresponding with the outer wall dimension of fuse 2, and after fuse 2 inserts, both can interference fit.The outer wall dimension of inner sleeve 1 one end is corresponding with the inner wall size of outer tube 4 one end, for being fixedly connected with outer tube 4.The inner wall size of protecting cover 3 in sleeve pipe is corresponding with the outer wall dimension of inner sleeve 1 one end, protect cover 3 in sleeve pipe to be made by insulating material, protecting cover 3 in the preferred sleeve pipe of the present embodiment is rubber integrated formed structure, and in sleeve pipe, the bottom surface of guarantor's cover 3 is provided with the through hole 3-1 that power cable passes.Fuse 2 inserts in the fuse patchhole 1-1 of inner sleeve 1, the winding switching end metal guide block 2-6 of fuse 2 contacts with the bottom surface of fuse patchhole 1-1, diameter due to fuse patchhole 1-1 is greater than the caliber of inner sleeve 1, this structure forms an effective screens, can the displacement of limiting fuses 2 in this side, high-pressure side winding is electrically connected by the endoporus of inner sleeve 1 and the winding switching end metal guide block 2-6 of fuse 2, the cable connection end metal guide block 2-2 of fuse 2 is positioned at an end face edge of inner sleeve 1, is conveniently connected with power cable.Protecting cover 3 in sleeve pipe is arranged between inner sleeve 1 and outer tube 4, protecting cover 3 in sleeve pipe, to be wrapped in inner sleeve 1 outer and compress the cable connection end metal guide block 2-2 of fuse 2, outer tube 4 one end wraps in inner sleeve 1 and sleeve pipe and protects cover 3, outer tube 4 is fixedly connected with inner sleeve 1, the present embodiment preferred inner sleeve 1 outer wall is provided with external screw thread, outer tube 4 inwall is provided with internal thread, and inner sleeve 1 and outer tube 4 are threaded.Fuse 2 is inserted in inner sleeve 1 in an interference fit, with being fixedly connected with of inner sleeve 1, fuse 2 sealing is arranged in sleeve pipe by outer tube 4, fuse 2 and sleeve pipe become integral structure, the endoporus of sleeve pipe, as connection the winding switching end metal guide block 2-6 of fuse 2, the passage of cable connection end metal guide block 2-2, is conveniently installed.When the fuse of the band sleeve structure of the present embodiment is connected with high-pressure side winding electric by high-pressure side winding switching device 5, for convenience of connecting, the winding switching end metal guide block 2-6 of the preferred fuse 2 of the present embodiment is the trapezium structure of outwardly convex, the size of this trapezium structure is corresponding with the insertion end size of the high-pressure side winding switching device 5 of pre-inserted, interference fit during the insertion end grafting of the winding switching end metal guide block 2-6 of fuse 2 and high-pressure side winding switching device 5.When the fuse of the band sleeve structure of the present embodiment is by cable connector 12 and power cable electrical connection, for convenience of connecting, the conductor of the preferred fuse 2 of the present embodiment is provided with the screwed hole 2-3 be fixedly connected with the cable connector 12 of pre-inserted, cable connector patchhole 4-1 is provided with in outer tube 4, the inner wall size of this cable connector patchhole 4-1 is corresponding with the insertion end size of the cable connector 12 of pre-inserted, the cable connection end metal guide block 2-2 of fuse 2 is provided with the through hole that cable connector passes, cable connector 12 inserts in the cable connector patchhole 4-1 of outer tube 4, the insertion end of cable connector 12 is successively through the through hole 3-1 protecting cover 3 in sleeve pipe, cable connection end metal guide block 2-2, the screwed hole 2-3 of the external screw thread that the insertion end of cable connector 12 is arranged and fuse 2 is threaded, realize the electrical connection of cable connector 12 and fuse 2.Conveniently install, inner sleeve 1 outer wall of the fuse of the band sleeve structure of the present embodiment is provided with the boss 1-2 of fixed installation.
During actual use, the inner sleeve 1 of the fuse of the band sleeve structure of the present embodiment is inserted in installing hole reserved on the casing 7 of transformer, inner sleeve 1 one end is immersed in the insulating oil 6 of the casing 7 of transformer, outer tube 4 is positioned at outside the casing 7 of transformer, flange 8 on the boss 1-2 side of inner sleeve 1 and the casing 7 of transformer is close to, sealing ring 13 is provided with between the boss 1-2 of inner sleeve 1 and flange 8, flange 8 is provided with set bolt 10, casing seat pressure 9 compresses the boss 1-2 opposite side of inner sleeve 1, is fixed on set bolt 10 by nut 11.In the casing 7 of transformer, high-pressure side winding is electrically connected by the winding switching end metal guide block 2-6 of high-pressure side winding switching device 5 and fuse 2.Outside the casing 7 of transformer, power cable is electrically connected by the cable connection end metal guide block 2-2 of cable connector 12 and fuse 2.Use the fuse of the band sleeve structure of the present embodiment, one group of sleeve pipe is installed and fuse 2 only need leave a hole on the casing 7 of transformer, decrease the volume of transformer, reduce the risk of casing 7 leakage of oil of transformer, meanwhile, when changing fuse 2, must cut off the electricity supply and disconnect the connection of sleeve pipe and power cable, fuse 2 is taken out, eliminates the hidden danger of hot line job, change safer.
As shown in Figure 8, a kind of installation method of fuse of above-mentioned band sleeve structure, comprises the following steps:
A. fuse is inserted in the fuse patchhole of inner sleeve along the perforate of inner sleeve one end;
B. be wrapped in by outer tube outside the perforate of the inner sleeve one end described in steps A, outer tube is fixedly connected with inner sleeve, and clamped by fuse and be fixed in the fuse patchhole of inner sleeve, insulation processing is done in the gap between outer tube and inner sleeve;
C. be fixedly mounted on the casing of transformer by the fuse of band sleeve structure, inner sleeve one end is inserted in the casing of transformer, and outer tube is arranged on outside the casing of transformer;
D. the link of power cable inserts in outer tube and is electrically connected with the metal guide block of fuse one end, for convenience of connecting, can arrange cable connector between fuse and power cable, the metal guide block of fuse one end is by cable connector and power cable electrical connection;
E. the link of high-pressure side winding inserts in inner sleeve and is electrically connected with the metal guide block of fuse one end, electric connecting terminal carries out encapsulation process, for convenience of connecting, can arrange high-pressure side winding switching device between fuse and high-pressure side winding, the metal guide block of the fuse other end is connected with high-pressure side winding electric by high-pressure side winding switching device.
Adopt above-mentioned installation method, be arranged in sleeve pipe by fuse sealing, two ends are connected with power cable, high voltage side of transformer winding electric respectively, realize the protection of electrical connection between power cable and high voltage side of transformer winding and transformer.Because fuse is fixed in sleeve pipe, one group of sleeve pipe is installed and fuse only need leave a hole on transformer-cabinet, decrease the volume of transformer, reduce the leakage of oil risk of transformer-cabinet, meanwhile, when changing fuse, must cut off the electricity supply and disconnect the connection of sleeve pipe and power cable, fuse is taken out, eliminates the hidden danger of hot line job, change safer.
Claims (7)
1. the fuse with sleeve structure, this fuse comprises fuse skin, quartz sand, the winding switching end metal guide block at fuse conductor and fuse two ends and cable connection end metal guide block, it is characterized in that, also comprise sleeve pipe, described sleeve pipe comprises inner sleeve (1), cover (3) is protected in outer tube (4) and sleeve pipe, fuse patchhole (1-1) is provided with in inner sleeve (1), the inner wall size of fuse patchhole (1-1) is corresponding with the outer wall dimension of fuse (2), the outer wall dimension of inner sleeve (1) one end is corresponding with the inner wall size of outer tube (4) one end, the inner wall size of protecting cover (3) in sleeve pipe is corresponding with the outer wall dimension of inner sleeve (1) one end, in sleeve pipe, the bottom surface of guarantor's cover (3) is provided with the through hole (3-1) that power cable passes, fuse (2) inserts in the fuse patchhole (1-1) of inner sleeve (1), winding switching end metal guide block (2-6) of fuse (2) contacts with the bottom surface of fuse patchhole (1-1), the cable connection end metal guide block (2-2) of fuse (2) is positioned at an end face edge of inner sleeve (1), protecting cover (3) in sleeve pipe is arranged between inner sleeve (1) and outer tube (4), protect cover (3) in sleeve pipe to be made by insulating material, protect cover (3) in sleeve pipe and be wrapped in inner sleeve (1) and compress the cable connection end metal guide block (2-2) of fuse (2) outward, outer tube (4) one end wraps in inner sleeve (1) and sleeve pipe and protects cover (3), outer tube (4) is fixedly connected with inner sleeve (1).
2. a kind of fuse with sleeve structure according to claim 1, it is characterized in that, described inner sleeve (1) outer wall is provided with external screw thread, and outer tube (4) inwall is provided with internal thread, and inner sleeve (1) and outer tube (4) are threaded.
3. a kind of fuse with sleeve structure according to claim 1, is characterized in that, protecting cover (3) in described sleeve pipe is rubber integrated formed structure.
4. a kind of fuse with sleeve structure according to claim 1, it is characterized in that, the trapezium structure that winding switching end metal guide block (2-6) of described fuse (2) is outwardly convex, the size of this trapezium structure is corresponding with the insertion end size of high-pressure side winding switching device (5) of pre-inserted.
5. a kind of fuse with sleeve structure according to claim 1, it is characterized in that, the conductor (2-5) of described fuse (2) is provided with the screwed hole (2-3) be fixedly connected with the cable connector of pre-inserted (12), in outer tube, (4) are provided with cable connector patchhole (4-1), the inner wall size of this cable connector patchhole (4-1) is corresponding with the insertion end size of the cable connector (12) of pre-inserted, the cable connection end metal guide block (2-2) of fuse (2) is provided with the through hole that cable connector (12) passes.
6. a kind of fuse with sleeve structure according to claim 1, is characterized in that, described inner sleeve (1) outer wall is provided with the boss (1-2) of fixed installation.
7. an installation method for the fuse of band sleeve structure according to claim 1, is characterized in that, comprise the following steps:
A. fuse is inserted in the fuse patchhole of inner sleeve along the perforate of inner sleeve one end;
B. be wrapped in by outer tube outside the perforate of the inner sleeve one end described in steps A, outer tube is fixedly connected with inner sleeve, and clamped by fuse and be fixed in the fuse patchhole of inner sleeve, insulation processing is done in the gap between outer tube and inner sleeve;
C. be fixedly mounted on the casing of transformer by the fuse of band sleeve structure, inner sleeve one end is inserted in the casing of transformer, and outer tube is arranged on outside the casing of transformer;
D. the link of power cable inserts in outer tube and is electrically connected with the metal guide block of fuse one end;
E. the link of high-pressure side winding inserts in inner sleeve and is electrically connected with the metal guide block of fuse one end, and electric connecting terminal carries out encapsulation process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210518308.6A CN103268847B (en) | 2012-12-06 | 2012-12-06 | Fuse with sleeve structure and mounting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210518308.6A CN103268847B (en) | 2012-12-06 | 2012-12-06 | Fuse with sleeve structure and mounting method |
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| Publication Number | Publication Date |
|---|---|
| CN103268847A CN103268847A (en) | 2013-08-28 |
| CN103268847B true CN103268847B (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210518308.6A Active CN103268847B (en) | 2012-12-06 | 2012-12-06 | Fuse with sleeve structure and mounting method |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037032A (en) * | 2014-06-30 | 2014-09-10 | 国家电网公司 | Plugging cover of high voltage fuse |
| CN104377476B (en) * | 2014-11-29 | 2016-05-11 | 华北电力大学（保定） | Power transformer casing tap adaptor for connecting |
| CN107424789A (en) * | 2017-08-03 | 2017-12-01 | 江苏齐正电力技术有限公司 | A kind of transformer hermetic terminal and its installation manufacture craft |
| CN109036778A (en) * | 2018-08-22 | 2018-12-18 | 江苏宝亨新电气有限公司 | A kind of standby fusible core fuel tank mounting structure |
| CN109616392A (en) * | 2018-12-27 | 2019-04-12 | 南京萨特科技发展有限公司 | A kind of high breaking midget fuse and preparation method thereof |
| KR102481779B1 (en) * | 2020-09-17 | 2022-12-27 | 주식회사 유라 | Electronic Part with Integrated Fuse |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3972015A (en) * | 1973-08-03 | 1976-07-27 | Rte Corporation | Heat insulated fused high voltage bushing |
| CN2440263Y (en) * | 2000-08-26 | 2001-07-25 | 韩秀芹 | Sleeve fuse |
| CN201075367Y (en) * | 2007-08-30 | 2008-06-18 | 谭迪 | High voltage fuse for ground-embedded type voltage transformer |
| KR101015135B1 (en) * | 2008-08-20 | 2011-02-16 | 주식회사 평일 | An elbow connector for transformer with fuse mounted inside |
| CN202940205U (en) * | 2012-12-06 | 2013-05-15 | 深圳市罗庚电气有限公司 | Fuse having sleeve structure |
-
2012
- 2012-12-06 CN CN201210518308.6A patent/CN103268847B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3972015A (en) * | 1973-08-03 | 1976-07-27 | Rte Corporation | Heat insulated fused high voltage bushing |
| CN2440263Y (en) * | 2000-08-26 | 2001-07-25 | 韩秀芹 | Sleeve fuse |
| CN201075367Y (en) * | 2007-08-30 | 2008-06-18 | 谭迪 | High voltage fuse for ground-embedded type voltage transformer |
| KR101015135B1 (en) * | 2008-08-20 | 2011-02-16 | 주식회사 평일 | An elbow connector for transformer with fuse mounted inside |
| CN202940205U (en) * | 2012-12-06 | 2013-05-15 | 深圳市罗庚电气有限公司 | Fuse having sleeve structure |
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| CN103268847A (en) | 2013-08-28 |
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