CN201821072U - Socket sleeve for transformer - Google Patents
Socket sleeve for transformer Download PDFInfo
- Publication number
- CN201821072U CN201821072U CN2010205567006U CN201020556700U CN201821072U CN 201821072 U CN201821072 U CN 201821072U CN 2010205567006 U CN2010205567006 U CN 2010205567006U CN 201020556700 U CN201020556700 U CN 201020556700U CN 201821072 U CN201821072 U CN 201821072U
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- CN
- China
- Prior art keywords
- transformer
- cable termination
- metal shell
- receptacle ferrule
- termination socket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a socket sleeve for a transformer, which comprises a metal casing, wherein the metal casing is filled with solid insulation layers; four independent cable termination socket apertures distributed at endpoints forming an X shape on the solid insulation layer facing to an opening on the metal casing, and are symmetrical relative to the center line of the metal casing; X-shaped and mutually communicated conductor layers are arranged at the bottom of the four cable termination socket apertures and matched with the four cable termination socket apertures; arc-shaped chamfer angles are formed at the edges of the conductor layers; the end of the metal casing, at which the opening is formed, is provided with a metal cover plate matched with the metal casing; four through-holes are formed on the metal cover plate in the position corresponding to the four cable termination socket apertures; and a plug in conducting connection with the transformer is arranged on one lateral surface of the metal casing and electrically connected with the conductor layers. The socket sleeve for the transformer adopts a dry type structure and has the advantages of reasonable and compact structure, easiness and convenience in mounting, and small occupied space, so that the arrangement of outgoing cables looks very simple and beautiful.
Description
Technical field
The utility model relates to a kind of electric cable accessories, particularly a kind of transformer receptacle ferrule.
Background technology
In power supply system or tractive power supply system, intermediate voltage terminal or the distolateral outgoing cable circuit of 27.5kV from power transformer, be terminal use or electric locomotive power supply, two kinds of structures are arranged at present: the one, adopt insulating sleeve (as porcelain bushing) as leading-out terminal, the outlet cable is connected on its binding post by the outdoor cable terminal; The 2nd, adopt the inner cone insulator, the outlet cable is plugged in the insulator by inner cone plug-in cable termination.Domestic most of producer adopts the structure of insulating sleeve, and there is following shortcoming in this structure: 1. barrier propterty is poor, and the high pressure current-carrying part directly exposes in air.2. the product operation stability is unreliable, and porcelain bushing needs to safeguard the cleaned at regular intervals surface dirt.3. it is big to take up room, and needs auxiliary equipments such as transition copper bus-bar and supporting insulator.4. structure is not compact, not attractive in appearance, the outlet cable complexity of arranging.Also there is the structure that adopts the inner cone insulator in domestic manufacturer, though this structure is in the requirement that can satisfy this series products aspect product protective and the operation stability substantially, but it is big to take up room, structure is not compact, profile is not attractive in appearance, in the time of need drawing many cables simultaneously, the outlet cable complicated problems of arranging exists equally, and because the inner cone insulator is mounted in transformer-cabinet inside, for satisfying the requirement of many outlet cables, it is complicated that the transformer internal structure becomes, size increases, and cost increases, and installs also extremely inconvenient.
In order to solve the serial installation and maintenance problem that many outlet cables need a plurality of cable plug-in units to cause, simplified structure as far as possible, each manufacturer has carried out various good tries, for example three-phase phase line and earth connection are concentrated in the sleeve pipe, volume that takies with minimizing or the like, but above-mentioned improvement in bushing shell for transformer, remains and uses (be filling type) of insulating oil as insulating material.For the product that adopts insulating oil as dielectric, as long as each keeps enough insulation distances relatively, relatively between the phase, not with the coefficient of expansion of considering between insulating oil and the conductor, there is not mutual active force between them yet, so the easiest realization of filling type constructed products, but this product needed operation monitoring, in case because of insulating oil leaks initiating failure, the insulating oil of Guo Louing pollutes environment simultaneously.Though most manufacturer has all recognized the insulating material (being dry type) that uses solid and can have outstanding advantage at aspects such as installation, maintenance and reduced volumes, but it is bigger owing to coefficient of expansion difference owing to solving insulating material and metallic conductor, when the technical bottleneck that will cause the solid insulating material cracking by the heat radiation of big electric current or conductor, the transformer that causes dry type still belongs to blank with the application of receptacle ferrule.
The utility model content
The purpose of this utility model is to overcome the shortcoming of prior art, provide that compact conformation is reasonable, barrier propterty is excellent, stable and reliable operation, non-maintaining, have excellent electric property and good through-current capability simultaneously, can make the arrange power transformer receptacle ferrule of simple especially dry type of the outlet cable of power transformer.
For reaching above-mentioned purpose, the utility model adopts following technical scheme: a kind of transformer receptacle ferrule, it is characterized in that, and comprise a metal shell, fill solid insulating layer in the metal shell; Described solid insulating layer offers be distributed in " X " shape end points four independently cable termination socket apertures towards a side of metal shell opening, and described four cable termination socket apertures are with respect to the center line symmetry of metal shell; Described four cable termination socket apertures bottom is provided with the conductor layer that is " X " shape and mutual electric connection that matches, and the edge of described conductor layer is equipped with the chamfering of arc; One end of described metal shell opening is provided with the metal cover board with its coupling, metal cover board be provided with four with the corresponding through hole in described cable termination socket aperture position; The side of described metal shell is provided with the plug that is connected conducting with transformer, and described plug is electrically connected with described conductor layer.
In order to realize the utility model better, described four independently the cable termination socket aperture be meant the cable termination socket aperture of same phase.
Described solid insulating layer is meant the epoxy solid insulating layer.
Described being " X " shape and mutually the conductor layer of electric connection be formed by stacking by two block length shape conductors cross.
Described being " X " shape and mutually the conductor layer of electric connection be integrally formed.Integrally formed conductor layer through-current capability is stronger.
Be provided with the high-tension shielding ring in the described cable termination socket aperture; Be provided with air-gap screened ring in the described plug.By high-tension shielding ring and air gap shading ring are set, the even complicated Electric Field Distribution of conductor junction, the air gap on the shielded transformer pasta has greatly improved the insulation level of transformer.
Described cable termination socket aperture is provided with circumferential seal groove towards an end of metal shell opening.
Described metal cover board edge is provided with circumferential connection seal groove.
Also be provided with the installation adpting flange between described metal shell side and the described plug, described installation adpting flange is provided with seal mounting groove towards an end face of plug.
Place corresponding sealing ring when installing in the above-mentioned seal groove.
Also be provided with the screwed hole that lifting usefulness is installed on the described metal shell surface.Screw on lifting bolt during installation.
Design principle of the present utility model is: by to conductor, epoxy insulation material, the distribution of cable termination socket aperture and the analysis of mechanical stress of shape, design the cable termination socket aperture, the conductor shape of " X " shape and cooperating of epoxy insulation material that distribute at " X " shape end points, conductor and solids epoxy insulating material have been solved because coefficient of expansion difference is big, the technical barrier that epoxy spare part ftractures easily during use.
The utility model possesses following outstanding advantage and effect with respect to prior art:
1, the utility model calculates by Electric Field Distribution, by high-tension shielding ring and air gap shading ring are set, and the even complicated Electric Field Distribution of conductor junction, the air gap on the shielded transformer pasta has greatly improved the level of insulation.
2, the utility model is by the syndeton design to epoxy insulation material and conductor, being connected of four cable conductors and epoxy spare inner conductor and being connected of inner conductor and transformer inside have been solved, and satisfy the demand of through-current capability, filled up the blank that solid insulating material is for a long time used in receptacle ferrule at transformer.According to identical design principle, can also design the cable termination socket aperture more than four, satisfy the demand of more outlet cables.
3, the utility model is as the oil-free dry structure, and environmentally safe has excellent barrier propterty.Because metal-back is really accomplished full-shield, all insulation, totally-enclosed in addition, and is non-maintaining, the product stable and reliable operation, fail safe is higher.The utility model transformer has the plug that is connected conducting with transformer with receptacle ferrule design, can directly realize the plug function of cable, and is easy to install, has good through-current capability simultaneously, can satisfy big electric current (〉=3150A) equipment requirements.
Description of drawings
Fig. 1 a is the vertical view of the utility model transformer with receptacle ferrule; Fig. 1 b is a left view;
Fig. 2 is the structural representation of the utility model transformer with the receptacle ferrule inner conductor;
Fig. 3 is the connection diagram of the utility model transformer with receptacle ferrule and transformer and inner cone plug-in cable.
Wherein, 1 be solid insulating layer, 2 for metal shell, 3 for sealing ring, 4 for side edge thereof connect sealing ring, 5 for cover plate, 6 for screw, 7 for soket head cap screw, 8 for conductor, 9 for the high-tension shielding ring, 10 for air-gap screened ring, 11 for plug, 12 for socket aperture, 13 for side edge thereof connect seal groove, 14 for install adpting flange, 15 for screwed hole, 16 for seal groove, 17 for inner cone plug-in cable termination, 18 for cable, 19 for transformer, 20 be that connecting clamp, 21 is a lifting bolt.
Embodiment
Below in conjunction with embodiment the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Embodiment
Transformer of the present utility model receptacle ferrule structure such as Fig. 1 a, Fig. 1 b and shown in Figure 2, the solid insulating layer 1 that is formed by the epoxy insulation material, the rectangle that the corner is arc or square-shaped metal housing 2 (but metal shell 2 separated into two parts are by screw 6 fixed combination or integrally formed) and constitute with the metal cover board 5 of metal shell 2 couplings, metal cover board 5 is fixed on the open end of metal shell by soket head cap screw 7.After the mode of solid insulating layer 1 by cast is shaped, fills and be fixed in the metal shell 2.Solid insulating layer 1 offers be distributed on " X " shape end points four independently cable termination socket apertures 12 towards a side of metal shell 2 openings, four cable termination socket apertures 12 are with respect to the center line symmetry of metal shell, and the structure of the inner cone plug-in cable termination 17 on the structure of cable termination socket aperture 12 and the cable 18 is complementary; Four cable termination socket aperture bottoms are provided with the conductor layer 8 that is " X " shape and mutual electric connection that matches, and the edge of conductor layer 8 is equipped with the chamfering of arc; Metal cover board 5 be provided with four with the corresponding through hole in cable termination socket aperture 12 positions; The side of metal shell 2 is provided with the plug 11 that is connected conducting with transformer 19, and the shell of plug 11 can be the ennation of metal shell 2, also fills solid insulating layer 1 in the plug 11, and plug 11 is electrically connected with conductor layer 8.The conductor layer 8 that is " X " shape and mutual electric connection is formed by stacking by two block length shape conductors cross, and the conductor layer that perhaps is " X " shape and mutual electric connection is integrally formed.Conductor layer 8 can be when solid insulating layer 1 cast and solid insulating layer be fixed into one.Also be filled with solid insulating layer between conductor layer 8 and the metal shell 2, form insulation with metal shell 2.In order better to realize that conduction, conductor layer 8 can also extend to madial wall a bit of of socket aperture 12 from the bottom of socket aperture 12.Conductor layers 8 in the cable termination socket aperture 12 are provided with high-tension shielding ring 9, are provided with air-gap screened ring 10 in the plug, and the even complicated Electric Field Distribution of conductor junction has shielded the air gap on the transformer pasta, has greatly improved the insulation level of transformer.Also be provided with between metal shell 2 sides and the plug adpting flange 14 is installed, adpting flange is installed is provided with seal mounting groove 16 towards an end face of plug.Also be provided with the screwed hole 15 that lifting usefulness is installed on the metal shell surface.Cable termination socket aperture 12 is provided with circumferential seal groove towards an end of metal shell 2 openings, in establish sealing ring 3, metal cover board 5 edges are provided with circumferential connection seal groove 13, in establish sealing ring 4.
Use of the present utility model connects as shown in Figure 3, transformer is installed in transformer tank with receptacle ferrule by installation adpting flange 14 to cover, the cable 18 of the band inner cone plug-in cable termination 17 made is inserted in the socket aperture 12, plug 11 is connected with transformer 19 by connecting clamp 20 gets final product, so just realized being connected of transformer 19 and outlet cable.Can assist lifting, transfer by lifting bolt 21 during installation.
After adopting said structure, transformer is reasonable with the compact conformation of receptacle ferrule, simultaneously because inner cone plug-in cable termination is a level installs, installs easyly easily, and it is little to take up room, and makes arranging of outlet cable seem simple and attractive in appearance especially.And this transformer receptacle ferrule is mounted in that transformer tank covers, and do not need to change the internal structure of transformer, and versatility is stronger.Transformer has excellent barrier propterty with receptacle ferrule, and is non-maintaining because the tyre metal-back is really accomplished full-shield, all insulation, totally-enclosed, the product stable and reliable operation, and fail safe is higher.By the setting of " X " shape conductor, make it have good through-current capability, can satisfy big electric current (〉=3150A) equipment requirements.
The foregoing description is the utility model preferred implementation; but execution mode of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection range of the present utility model.
Claims (10)
1. a transformer receptacle ferrule is characterized in that, comprises a metal shell, fills solid insulating layer in the metal shell; Described solid insulating layer offers be distributed in " X " shape end points four independently cable termination socket apertures towards a side of metal shell opening, and described four cable termination socket apertures are with respect to the center line symmetry of metal shell; Described four cable termination socket apertures bottom is provided with the conductor layer that is " X " shape and mutual electric connection that matches, and the edge of described conductor layer is equipped with the chamfering of arc; One end of described metal shell opening is provided with the metal cover board with its coupling, metal cover board be provided with four with the corresponding through hole in described cable termination socket aperture position; The side of described metal shell is provided with the plug that is connected conducting with transformer, and described plug is electrically connected with described conductor layer.
2. transformer receptacle ferrule according to claim 1 is characterized in that, described four independently the cable termination socket aperture be meant the cable termination socket aperture of same phase.
3. transformer receptacle ferrule according to claim 1 is characterized in that described solid insulating layer is meant the epoxy solid insulating layer.
4. transformer receptacle ferrule according to claim 1 is characterized in that, described being " X " shape and mutually the conductor layer of electric connection be formed by stacking by two block length shape conductors cross.
5. transformer receptacle ferrule according to claim 1 is characterized in that, described being " X " shape and mutually the conductor layer of electric connection be integrally formed.
6. according to each described transformer receptacle ferrule in the claim 1 to 5, it is characterized in that, be provided with the high-tension shielding ring in the described cable termination socket aperture; Be provided with air-gap screened ring in the described plug.
7. according to each described transformer receptacle ferrule in the claim 1 to 5, it is characterized in that described cable termination socket aperture is provided with circumferential seal groove towards an end of metal shell opening.
8. according to each described transformer receptacle ferrule in the claim 1 to 5, it is characterized in that described metal cover board edge is provided with circumferential connection seal groove.
9. according to each described transformer receptacle ferrule in the claim 1 to 5, it is characterized in that also be provided with the installation adpting flange between described metal shell side and the described plug, described installation adpting flange is provided with seal mounting groove towards an end face of plug.
10. according to each described transformer receptacle ferrule in the claim 1 to 5, it is characterized in that, also be provided with the screwed hole that lifting usefulness is installed on the described metal shell surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205567006U CN201821072U (en) | 2010-10-09 | 2010-10-09 | Socket sleeve for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205567006U CN201821072U (en) | 2010-10-09 | 2010-10-09 | Socket sleeve for transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201821072U true CN201821072U (en) | 2011-05-04 |
Family
ID=43919014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205567006U Expired - Lifetime CN201821072U (en) | 2010-10-09 | 2010-10-09 | Socket sleeve for transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201821072U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005713A (en) * | 2010-10-09 | 2011-04-06 | 广东吉熙安电缆附件有限公司 | Socket sleeve for transformer |
| CN102386603A (en) * | 2011-10-21 | 2012-03-21 | 国网电力科学研究院 | High-voltage direct-current cable terminal using shielding cylinder |
-
2010
- 2010-10-09 CN CN2010205567006U patent/CN201821072U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005713A (en) * | 2010-10-09 | 2011-04-06 | 广东吉熙安电缆附件有限公司 | Socket sleeve for transformer |
| CN102005713B (en) * | 2010-10-09 | 2012-09-05 | 广东吉熙安电缆附件有限公司 | Socket sleeve for transformer |
| CN102386603A (en) * | 2011-10-21 | 2012-03-21 | 国网电力科学研究院 | High-voltage direct-current cable terminal using shielding cylinder |
| CN102386603B (en) * | 2011-10-21 | 2014-02-05 | 国网电力科学研究院 | High-voltage direct-current cable terminal using shielding cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110504 Effective date of abandoning: 20120905 |