CN201877772U - Bushing terminal for electrified railroad - Google Patents
Bushing terminal for electrified railroad Download PDFInfo
- Publication number
- CN201877772U CN201877772U CN2010206476771U CN201020647677U CN201877772U CN 201877772 U CN201877772 U CN 201877772U CN 2010206476771 U CN2010206476771 U CN 2010206476771U CN 201020647677 U CN201020647677 U CN 201020647677U CN 201877772 U CN201877772 U CN 201877772U
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- CN
- China
- Prior art keywords
- terminal
- upper flange
- flange
- cable
- stay tube
- 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 bushing terminal for an electrified railroad. The bushing terminal is characterized in that an insulting body for wrapping a cable is arranged in a bracing tube, a rain shed is arranged outside the bracing tube, an upper flange is arranged at the upper end of the bracing tube, a cable conductor penetrates through the upper flange and is connected with a wiring terminal, and a dual seal ring is used for sealing between the wiring terminal and the upper flange. A lower flange is arranged at the lower end of the bracing tube, and a fixing clamp is clamped on the lower flange and is fastened onto channel steel for a steel tower through a bolt. The bushing terminal for the electrified railroad has a simple structure, is convenient to install, does not need to be poured with any insulating medium, has no leakage and has good explosion-proof performance, and a terminal body has high rigidity and can bear large bending moment.
Description
Technical field
The utility model relates to a kind of electric railway bushing type terminal.
Background technology
Fast development along with China's electric railway construction, 27.5kV (U0) demand of power cable with cross-linked polyethylene insulation annex constantly increases, existing 27.5kV (U0) electric cable accessories product category mainly contains: the inside and outside terminal in 27.5kV (U0) family, 27.5kV (U0) transition joint, 27.5kV (U0) inner cone plug-in (GIS) terminal.And the inside and outside terminal in 27.5kV (U0) family is to make one of product the most widely with the most use in the present electric railway.
The inside and outside terminal in 27.5kV (U0) family generally has two kinds of versions in the market, a kind of is the porcelain bushing type terminal, this frame mode complex structure, and need the pouring dielectric, easily leakage of oil taking place and causes the generation of security incident, the explosion-proof performance of insulator itself is relatively poor in addition, hurts sb.'s feelings easily when terminal has an accident and damages surrounding devices, seldom sees on the current market.Another kind is prefabricated (shrinkage) formula terminal, the terminal structure of this structure is simple, handle cable during installation earlier well, be inserted in terminal body then, it is quite convenient to install, and explosion-proof performance is good, but because the terminal body material is a silicon rubber, this is as a flexible body, and is stressed when crooked and produce buckling phenomenon at the cable top easily, and causes the generation of security incident.
The utility model content
Technical problem to be solved in the utility model is to propose a kind of electric railway bushing type terminal, this electric railway is simple, easy for installation with the bushing type terminal structure, need not water any dielectric, do not have reveal, explosion-proof performance is good, terminal body itself has big rigidity and can bear than moment of flexure greatly.
Technical solution of the present utility model is as follows:
A kind of electric railway bushing type terminal, be provided with the insulating body that is used to wrap cable in the stay tube, the rainy skirt of stay tube peripheral hardware, the upper end of stay tube is provided with upper flange, cable conductor passes upper flange and is connected with binding post, the lower end of stay tube is provided with lower flange, and geometrical clamp is clamped on the lower flange, geometrical clamp by bolted on the iron tower channel-section steel.
Upper flange and binding post join, and the junction of upper flange and binding post is provided with the dual-seal circle.
Be provided with stress cone in the insulating body.Upper flange and lower flange all are the metal inserts that are bonded in the stay tube upper/lower terminal with high-strength adhesive, therefore do not use bolt to connect.In the utility model, upper flange is called radome again, and lower flange is called base again.
Beneficial effect:
Electric railway of the present utility model is dry type, rigidity terminal structure with the bushing type terminal, need not water dielectric, and terminal can bear big moment of flexure, be used for 27.5kV (U0) terminal, stay tube adopts glass fiber impregnated epoxy resin molding material, has high-intensity high-tenacity.Described stress cone and insulating body adopt the polymer rubber material through annotating rubber equipment HTHP vulcanization forming.The effect of stress cone is to improve the electric field of cable shield cut-off part to concentrate, and realizes the even control to electric field.Insulating body, rain skirt, upper flange, lower flange and the stay tube formation terminal body that bonds together, be dry type rigidity terminal structure, stopped the problem brought by leakage, and solved prefabricated (shrinkage) formula terminal itself with cable stressedly cause tilting, crooked phenomenon, and terminal body has good explosion-proof performance.Adopt the dual-seal circle between described binding post and the described upper flange, guaranteed excellent sealing ability.Described terminal body is fixed on the iron tower channel-section steel by described geometrical clamp, makes terminal body installation back solid and reliable.
Description of drawings
Fig. 1 is the general structure schematic diagram of electric railway with the bushing type terminal.
Label declaration: 1-binding post, 2-upper flange, 3-stay tube, 4-insulating body, 5-rain skirt, 6-stress cone, 7-lower flange, 8-geometrical clamp, 9-iron tower channel-section steel, 10-cable, 11-earth connection.
Embodiment
Below with reference to the drawings and specific embodiments the utility model is described in further details:
Embodiment 1:
As shown in Figure 1, the electric railway of present embodiment mainly comprises binding post 1, upper flange 2, stay tube 3, insulating body 4, rain skirt 5, stress cone 6, lower flange 7, geometrical clamp 8 with the bushing type terminal.Insulating body 4, rain skirt 5, upper flange 2, lower flange 7 and the stay tube 3 formation terminal body that bonds together is installed the described terminal body that is complementary with the cable insulation outside dimension in cable 10 insulation of handling well; On upper flange, place sealing ring, again binding post 1 is nested on the cable core, and good by the crimping of specific purpose tool pressing tongs; Again geometrical clamp is assembled on the terminal body lower flange 7, and is fixed by bolts on the iron tower channel-section steel 9; Carry out encapsulation process by the wrapped corresponding band of technological requirement between lower flange 7 and the cable 10; Earth connection 11 1 ends are welded in the cable metal shielding, and the other end is connected with earth mat, realize reliable ground.
Geometrical clamp is Hough type, two semicircle block structures, is used for fixing terminal body, earlier geometrical clamp is held tightly on lower flange during installation, passes two bolts then and is fixed on the iron tower channel-section steel with nut, and geometrical clamp itself does not contact with cable.
Claims (3)
1. electric railway bushing type terminal, it is characterized in that, be provided with the insulating body that is used to wrap cable in the stay tube, the rainy skirt of stay tube peripheral hardware, the upper end of stay tube is provided with upper flange, and cable conductor passes upper flange and is connected with binding post, and the lower end of stay tube is provided with lower flange, geometrical clamp is clamped on the lower flange, geometrical clamp by bolted on the iron tower channel-section steel.
2. electric railway bushing type terminal according to claim 1 is characterized in that upper flange and binding post join, and the junction of upper flange and binding post is provided with the dual-seal circle.
3. electric railway bushing type terminal according to claim 1 and 2 is characterized in that, is provided with stress cone in the insulating body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206476771U CN201877772U (en) | 2010-12-07 | 2010-12-07 | Bushing terminal for electrified railroad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206476771U CN201877772U (en) | 2010-12-07 | 2010-12-07 | Bushing terminal for electrified railroad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201877772U true CN201877772U (en) | 2011-06-22 |
Family
ID=44165681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206476771U Expired - Lifetime CN201877772U (en) | 2010-12-07 | 2010-12-07 | Bushing terminal for electrified railroad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201877772U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105743053A (en) * | 2014-12-08 | 2016-07-06 | 北京瑞恒新源投资有限公司 | Capacitive cable terminal without insulating medium filling |
| CN108766683A (en) * | 2018-05-24 | 2018-11-06 | 醴陵市浦口电瓷制造有限公司 | A kind of explosion-proof type electroceramics cable termination insulator |
-
2010
- 2010-12-07 CN CN2010206476771U patent/CN201877772U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105743053A (en) * | 2014-12-08 | 2016-07-06 | 北京瑞恒新源投资有限公司 | Capacitive cable terminal without insulating medium filling |
| CN105743053B (en) * | 2014-12-08 | 2019-02-05 | 北京瑞恒新源投资有限公司 | A kind of capacitance type cable terminal being not filled with dielectric |
| CN108766683A (en) * | 2018-05-24 | 2018-11-06 | 醴陵市浦口电瓷制造有限公司 | A kind of explosion-proof type electroceramics cable termination insulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHANGLAN ELECTRICAL TECHNOLOGY CO., LTD. Free format text: FORMER NAME: CHANGSHA CABLE ACCESSORY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 410205 Hunan province Changsha City Lugu high tech Industrial Park District Tongzi Po Road No. 223 Patentee after: Changlan Cable Accessories Co., Ltd. Address before: 410205 Hunan province Changsha City Lugu high tech Industrial Park District Tongzi Po Road No. 223 Patentee before: Changsha Cable Accessory CO., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110622 |
|
| CX01 | Expiry of patent term |