CN212874209U - Cable-through type transformer bushing end structure - Google Patents
Cable-through type transformer bushing end structure Download PDFInfo
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- CN212874209U CN212874209U CN202021975566.3U CN202021975566U CN212874209U CN 212874209 U CN212874209 U CN 212874209U CN 202021975566 U CN202021975566 U CN 202021975566U CN 212874209 U CN212874209 U CN 212874209U
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- conducting rod
- spring
- transformer bushing
- cap
- finger
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Abstract
The utility model provides a wear cable type transformer sleeve pipe end structure, including the general cap, the conducting rod, set nut, the conducting rod constant head tank, the locating pin, the spring touches the finger, the sealing washer, the voltage-sharing seat, characterized by conducting rod carries on spacingly through screw thread and conducting rod constant head tank to set nut, the locating pin is worn on conducting rod and set nut, make it form an organic whole, can not rotate, play limiting displacement, suit the spring in two ways recess in the general cap touches the finger, the conducting rod that will assemble penetrates in the general cap, the spring touches the finger and has played good electrically conductive effect. The transformer bushing conducting rod is matched with the transformer bushing conducting rod through the design size, the limiting effect is directly achieved, special requirements for field installation workers are not required, and the operation of a product cannot be influenced by misoperation. The contact resistance of the spring contact finger structure is far smaller than that of threaded connection, so that the connection is firm, the installation is convenient, and the operation of a product is more facilitated.
Description
The technical field is as follows:
the utility model relates to a transformer bushing, concretely relates to cable-threading type transformer bushing tip structure.
Background art:
the transformer bushing is divided into a cable-through type and a guide rod type. When the carrying capacity is 1250A or below, a cable-through sleeve is selected. The cable-penetrating type sleeve is internally insulated by an aluminum tube isolation sleeve body and a current-carrying conductor, a transformer winding outgoing cable penetrates through the aluminum tube in the sleeve from the tail part of the sleeve, then is welded on the conducting rod, is fixed at the end part of the sleeve through a positioning pin, is connected with the military cap through a screw thread of the conducting rod, and a nut on the conducting rod is screwed up with the military cap. The guide rod type bushing is generally suitable for carrying capacities above 1250A. The inside of the guide rod type sleeve is provided with a packaged metal conductor as a current carrier, and a winding outgoing line is connected with a wiring seat at the tail part of the sleeve during field installation.
At present, in transformer bushing production enterprises, the cable-through type transformer bushings are generally in a type that conductive rod threads are connected with military caps. However, this structure has some drawbacks: in the field installation process, if the operator is not operated properly, the nut on the conducting rod is not screwed up with the military cap in opposite directions, the threaded connection pair cannot be longitudinally compressed, the threads of the conducting rod and the threads of the military cap are in a loose state, the contact resistance is overlarge, and the heating condition occurs during operation, so that potential safety hazards can be brought to the normal operation of the transformer.
The invention content is as follows:
the utility model aims at providing a wear cable type transformer bushing tip structure, this structure makes field operation simple through spacing and conductive mode, has avoided the hidden danger that field operation does not arrive the position and cause to improve the electrically conductive reliability of product, increased the one deck guarantee for transformer bushing's safe operation.
The utility model provides a technical scheme that its technical problem was taken provides a cable penetrating type transformer sleeve pipe end structure, including general cap, conducting rod, set nut, conducting rod constant head tank, locating pin, spring contact finger, sealing washer, voltage-sharing seat, characterized by conducting rod carries on spacingly through screw thread and conducting rod constant head tank to set nut, and the locating pin is worn on conducting rod and set nut, makes it form integratively, can not rotate, plays limiting displacement, and the cover dress spring contact finger in the general cap, puts the conducting rod that will assemble on the voltage-sharing seat, sealing washer of suit in the recess of voltage-sharing seat top, general cap is put at the top of voltage-sharing seat, with the bolt-up.
The bottom end of the conducting rod thread is specially provided with a conducting rod positioning groove.
The positioning nut and the conducting rod are screwed together, and the positioning nut and the conducting rod penetrate through the positioning pin for limiting.
The spring touches and indicates two, and for reverse installation.
According to the utility model provides a pair of cable-penetrating type transformer bushing end structure has following advantage:
1. the positioning nut can be easily screwed in place, and the direct positioning is realized without measuring.
2. The spring contact finger has a self-aligning function and realizes excellent conductive performance.
3. Two spring contact fingers are reversely mounted, so that the bidirectional locking effect can be achieved, and the contact is firmer.
4. The positioning nut and the conducting rod are integrated, and the limiting is firm and reliable.
Description of the drawings:
fig. 1 is a schematic structural diagram of an embodiment provided by a cable-penetrating type transformer bushing end structure according to the present invention, which includes a military cap 1, a conductive rod 2, a spring contact finger 3, a bolt 4, a seal ring 5, a positioning nut 6, a conductive rod positioning groove 7, a positioning pin 8, and a pressure equalizing seat 9.
The specific implementation mode is as follows:
the utility model discloses an embodiment is shown in figure 1, including with military cap 1, conducting rod 2, spring touch finger 3, bolt 4, sealing washer 5, set nut 6, conducting rod constant head tank 7, locating pin 8, voltage-sharing seat 9. Conducting rod 2 carries on spacingly through screw thread and conducting rod constant head tank 7 to set nut 6, and locating pin 8 wears on conducting rod 2 and set nut 6, makes it form integratively, can not rotate, plays limiting displacement, and the suit spring touches and indicates 3 in will army cap 1, and the conducting rod 1 that will assemble is put on voltage-sharing seat 9, and sealing washer 5 is adorned to voltage-sharing seat 9 top recess endotheca, and will army cap 1 is put at the top of voltage-sharing seat 9, fastens with bolt 4.
Wherein, the number of the spring contact fingers 3 is two, the spring contact fingers are embedded and sleeved in the two grooves of the military cap 1, and the two spring contact fingers 3 are reversely arranged.
The positioning nut 6 is screwed on the conducting rod 2 to the terminal of the conducting rod positioning groove 7, and the positioning pin 7 is inserted into concentric circular holes of the conducting rod 2 and the positioning nut 6 for positioning, so that the positioning nut and the conducting rod are integrated into a whole and do not move relatively.
A sealing ring 5 is sleeved in a groove at the top of the pressure equalizing seat 8.
And placing the conducting rod 2 with the positioning nut 6 and the positioning pin 7 assembled on the pressure equalizing seat 9, wherein the positioning nut 6 is positioned in a groove of a central hole of the pressure equalizing seat 9.
The military cap 1 is placed on the top of the pressure equalizing seat 9 and is fastened by the bolt 4, and the operation can ensure that the military cap 1 is reliably contacted with the conducting rod 2 through two spring contact fingers.
The above preferred embodiments are provided for illustrative purposes only and are not intended to limit the present invention. The present invention is not limited to the above embodiments, but may be modified in various ways without departing from the spirit and scope of the present invention.
Claims (4)
1. The utility model provides a cable-penetrating type transformer bushing end structure, includes that the general cap (1), conducting rod (2), spring touch indicate (3), fixing bolt (4), sealing washer (5), set nut (6), conducting rod constant head tank (7), locating pin (8), voltage-sharing seat (9), its characterized in that, set nut (6) are equipped with outward to conducting rod (2), and locating pin (8) have been worn at the two center, are equipped with the spring in the general cap (1) and touch and indicate (3), and conducting rod (2) are worn in voltage-sharing seat (9) centre bore, and general cap (1) is located voltage-sharing seat (9) upper end, the outer end of conducting rod (2).
2. The end structure of the cable-through type transformer bushing according to claim 1, wherein the thread bottom of the conducting rod (2) is provided with a conducting rod positioning groove (7) for limiting a positioning nut.
3. A feedthrough transformer bushing end construction according to claim 1, characterized in that two recesses are provided in the military cap (1).
4. A feedthrough transformer bushing end construction according to claim 1, characterized in that the military cap (1) is fitted with two spring fingers (3) and is mounted in reverse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021975566.3U CN212874209U (en) | 2020-09-10 | 2020-09-10 | Cable-through type transformer bushing end structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021975566.3U CN212874209U (en) | 2020-09-10 | 2020-09-10 | Cable-through type transformer bushing end structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212874209U true CN212874209U (en) | 2021-04-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021975566.3U Active CN212874209U (en) | 2020-09-10 | 2020-09-10 | Cable-through type transformer bushing end structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212874209U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114284069A (en) * | 2021-11-15 | 2022-04-05 | 河南平高电气股份有限公司 | Capacitor connecting structure and arc extinguish chamber |
| CN114333436A (en) * | 2021-12-17 | 2022-04-12 | 云南电网有限责任公司昆明供电局 | Training device for decomposing and recombining transformer bushing and military cap structure |
-
2020
- 2020-09-10 CN CN202021975566.3U patent/CN212874209U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114284069A (en) * | 2021-11-15 | 2022-04-05 | 河南平高电气股份有限公司 | Capacitor connecting structure and arc extinguish chamber |
| CN114284069B (en) * | 2021-11-15 | 2024-04-19 | 河南平高电气股份有限公司 | Capacitor connection structure and explosion chamber |
| CN114333436A (en) * | 2021-12-17 | 2022-04-12 | 云南电网有限责任公司昆明供电局 | Training device for decomposing and recombining transformer bushing and military cap structure |
| CN114333436B (en) * | 2021-12-17 | 2024-03-05 | 云南电网有限责任公司昆明供电局 | Training device for decomposing and reorganizing structure of transformer sleeve and armcap |
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