CN202049188U - Leakage current sampling device for end shield of high-voltage bushing - Google Patents
Leakage current sampling device for end shield of high-voltage bushing Download PDFInfo
- Publication number
- CN202049188U CN202049188U CN2011201510658U CN201120151065U CN202049188U CN 202049188 U CN202049188 U CN 202049188U CN 2011201510658 U CN2011201510658 U CN 2011201510658U CN 201120151065 U CN201120151065 U CN 201120151065U CN 202049188 U CN202049188 U CN 202049188U
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- China
- Prior art keywords
- metal
- binding post
- leakage current
- metal shell
- cylinder
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- Expired - Fee Related
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Abstract
The utility model discloses a leakage current sampling device for an end shield of a high-voltage bushing, which comprises a metal casing. A metal casing thread is arranged at the front end of the outer wall of the metal casing, an insulating barrel is arranged on the inner side of the metal casing, a metal barrel with a binding post is arranged on the inner side of the insulating barrel, one end of the binding post is fixed onto the metal barrel, and the other end of the binding post penetrates through the insulating barrel and a round hole on the metal casing and extends out of the metal casing. A binding post thread is arranged in the middle of the binding post, the binding post is fixed onto the metal casing through a sealing insulating pad and a fixing nut, and an M-shaped spring sheet is arranged in the metal barrel and contacts with the same. The leakage current sampling device is in the multi-layer structure, excellent sealing performance, insulativity and contact property of the leakage current sampling device are guaranteed by the aid of the M-shaped spring sheet arranged therein, and the thread connection structures at mounting positions bring great convenience to on-site mounting while enhancing stability of contact. Further, each part is designed in standardization and suitable for manufacturing of factories.
Description
Technical field
The utility model relates to a kind of current sampling device, especially a kind of bushing end screen leakage current sampler.
Background technology
At present, for even distribution electric field, sleeve pipe is made of insulation course between the multi-disc metal screen, and the end screen is last screen, is used for being connected with the ground equipotential, and necessary reliable ground in service is untied during preventive trial so that measure the capacity and the dielectric loss of sleeve pipe.The sleeve pipe insulation line monitoring device need be measured leakage current from the end screen, and current sampling device one end is connected with end screen Metallic rod, and the other end is a ground wire, and ground wire is linked into current measuring device, then ground connection.But current sampling device should seal, contact reliable, otherwise will cause that sleeve pipe makes moist or explodes, and the on-the-spot installation procedure of existing sampler is more loaded down with trivial details, and the reliability of sealing and contact is not high.
Summary of the invention
The purpose of this utility model is: a kind of bushing end screen leakage current sampler is provided, its ground connection is reliable, good airproof performance, on-the-spot install simple, to overcome the deficiencies in the prior art.
The utility model is achieved in that bushing end screen leakage current sampler, comprise metal shell, front end at the metal shell outer wall is provided with the metal shell screw thread, inboard at metal shell is provided with insulating cylinder, be provided with the metal cylinder of band binding post in the inboard of insulating cylinder, on the one end fixing metal tube of binding post, its other end passes the circular hole on insulating cylinder and the metal shell, is in outside the metal shell; Be provided with the binding post screw thread at the middle part of binding post, binding post is fixed on the metal shell by sealed insulation pad and hold-down nut; Be provided with M type spring leaf in metal cylinder, M type spring leaf contacts with metal cylinder.
Be provided with the sealed insulation pad corresponding with the outside in the inboard of metal shell.
Be provided with circular locating slot on the inwall of metal cylinder, the termination of M type spring leaf is in the locating slot.
M type spring leaf comprises tension elastomeric position, Metallic rod contact site, metal cylinder contact site and folder power elasticity position; One end at tension elastomeric position is connected with the metal cylinder contact site, and its other end is connected with Metallic rod contact site one end, and the other end of Metallic rod contact site is connected with folder power elasticity position.
Inboard in the Metallic rod contact site of M type spring leaf is provided with groove.Make the Metallic rod contact site clamp end screen Metallic rod, guarantee that contact is reliable from four direction.
Vertical range between two metal cylinder contacts site is greater than the internal diameter of metal cylinder.
Owing to adopted technique scheme, compared with prior art, the utility model adopts the current sampling device of sandwich construction, and M type spring leaf is set in device, good sealing property, insulativity and contact have been guaranteed, and the installation site all adopts the structure that is threaded, and greatly facilitates on-the-spot the installation, improved stability in contact again; Each parts all adopts standardized designs, is suitable for factory and makes.The utility model is simple in structure, and is with low cost, and result of use is good.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is the structural representation of M type spring leaf;
Accompanying drawing 3 is the deployed configuration synoptic diagram of M type spring leaf;
Accompanying drawing 4 is a working state schematic representation of the present utility model.
Embodiment
Embodiment of the present utility model: the structure of bushing end screen leakage current sampler is produced a uncovered columniform metal shell 4 earlier, and the front end of metal shell 4 outer walls is produced metal shell screw thread 3 as shown in Figure 1; Adopt insulating material to produce insulating cylinder 7 again, insulating cylinder 7 also is the uncovered structure of cylinder, its external diameter is suitable mutually with the internal diameter of metal shell 4, insulating cylinder 7 is enclosed in the metal shell 4, and setting out circular hole at the end of metal shell 4 and insulating cylinder 7, the circular hole of insulating cylinder 7 covers the circular hole inside of metal shell 4; In metal cylinder 8 of being with binding post 12 of interior installation of insulating cylinder 7, on the inwall of metal cylinder 8, process the locating slot 5 of two symmetrical circular then; Binding post 12 adopts same material with metal cylinder 8, connect as one with the mode of one processing a end and metal cylinder 8 binding post 12, the other end of binding post 12 passes the circular hole on metal shell 4 and the insulating cylinder 7, be in outside the metal shell 4, insulating cylinder 7 is separated metal shell 4 and metal cylinder 8 and binding post 12, makes to keep insulation between them; And process binding post screw thread 11 at the middle part of binding post 12, and binding post 12 is fixed on the metal shell 4 by sealed insulation pad 9 and hold-down nut 10, sealed insulation pad 9 is a seal, is again the insulating part between hold-down nut 10 and the metal shell 4; Sealed insulation pad 9 still is installed, to improve sealing effectiveness on the correspondence position of metal shell 4 inboards; Make a M type spring leaf 6 at last, it is made as shown in Figure 2 structure, it comprises tension elastomeric position 10, Metallic rod contact site 11, metal cylinder contact site 12 and folder power elasticity position 13, wherein an end at tension elastomeric position 10 is connected with metal cylinder contact site 12, its other end is connected with Metallic rod contact site 11 1 ends, the other end of Metallic rod contact site 11 is connected with folder power elasticity position 13, and the vertical range between 12 terminations, two metal cylinder contacts site that guarantee to produce is greater than the internal diameter of metal cylinder 8; M type spring leaf 6 is a material with the rectangle spring steel plate, before brake forming, on position, produce the groove 14 of two correspondences, as shown in Figure 3 as Metallic rod contact site 11, groove 14 is wide must to shield Metallic rod 2 diameters less than the end, is advisable with half of end screen Metallic rod 2 diameters.End screen Metallic rod 2 is inserted the back and is contacted with the edge of the groove 14 of 11 both sides, Metallic rod contact site, make Metallic rod contact site 11 clamp end screen Metallic rod 2 from four direction, guaranteed the reliability of contact, at last the spring steel plate making has been become special M type and get final product; The M type spring leaf of making 6 is installed, make the metal cylinder contact site 12 of M type spring leaf 6 fall into the locating slot 5 of metal cylinder 8, make M type spring leaf 6 clamp the inwall that end screen Metallic rod 2 pushes against metal cylinder 8 simultaneously, when rotation assembling sampler, end screen Metallic rod 2 can relatively rotate with M type spring leaf 6, and M type spring leaf 6 also may relatively rotate with metal cylinder 8; Made things convenient for the rotation of M type spring leaf 6.
It is that 4mm, length are the end screen Metallic rod 2 of 25～40mm that bottom shielding of bushing is generally diameter, has end screen groove 1.In use, as shown in Figure 4, earlier the threaded engagement of the metal shell screw thread on the metal shell 43 with end screen groove 1 coupled together, end screen Metallic rod 2 is inserted in the Metallic rod contact site 11 of M type spring leaf 6, and on binding post 12 ground wire is installed.
After end screen Metallic rod 2 was inserted, folder power elasticity position 13 spreadings made Metallic rod contact site 11 clamp end screen Metallic rod 2, and tension elastomeric position 10 produces tension force and pushes against Metallic rod 12 and metal cylinder 8 simultaneously, has effectively guaranteed the reliability of contact.
Claims (6)
1. the leakage current sampler is shielded at a bushing end, comprise metal shell (4), it is characterized in that: the front end at metal shell (4) outer wall is provided with metal shell screw thread (3), be provided with insulating cylinder (7) in the inboard of metal shell (4), be provided with the metal cylinder (8) of band binding post (12) in the inboard of insulating cylinder (7), on the one end fixing metal tube (8) of binding post (12), its other end passes the circular hole on insulating cylinder (7) and the metal shell (4), is in outside the metal shell (4); Be provided with binding post screw thread (11) at the middle part of binding post (12), binding post (12) is fixed on the metal shell (4) by sealed insulation pad (9) and hold-down nut (10); Be provided with M type spring leaf (6) in metal cylinder (8), M type spring leaf (6) contacts with metal cylinder (8).
2. bushing according to claim 1 end screen leakage current sampler is characterized in that: be provided with the sealed insulation pad (9) corresponding with the outside in the inboard of metal shell (4).
3. bushing according to claim 1 end screen leakage current sampler, it is characterized in that: be provided with circular locating slot (5) on the inwall of metal cylinder (8), the termination of M type spring leaf (6) is in the locating slot (5).
4. according to claim 1 or 3 described bushing end screen leakage current samplers, it is characterized in that: M type spring leaf (6) comprises tension elastomeric position (10), Metallic rod contact site (11), metal cylinder contact site (12) and folder power elasticity position (13); One end at tension elastomeric position (10) is connected with metal cylinder contact site (12), and its other end is connected with Metallic rod contact site (11) one ends, and the other end of Metallic rod contact site (11) is connected with folder power elasticity position (13).
5. bushing according to claim 4 end screen leakage current sampler is characterized in that: the inboard in the Metallic rod contact site (11) of M type spring leaf (6) is provided with groove (14).
6. bushing according to claim 4 end screen leakage current sampler, it is characterized in that: the vertical range between two metal cylinder contacts site (12) is greater than the internal diameter of metal cylinder (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201510658U CN202049188U (en) | 2011-05-13 | 2011-05-13 | Leakage current sampling device for end shield of high-voltage bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201510658U CN202049188U (en) | 2011-05-13 | 2011-05-13 | Leakage current sampling device for end shield of high-voltage bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202049188U true CN202049188U (en) | 2011-11-23 |
Family
ID=44989493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201510658U Expired - Fee Related CN202049188U (en) | 2011-05-13 | 2011-05-13 | Leakage current sampling device for end shield of high-voltage bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202049188U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102779626A (en) * | 2012-08-21 | 2012-11-14 | 浙江省电力公司电力科学研究院 | High-voltage bushing end screen elastic sheet type leading out device |
| CN112420290A (en) * | 2020-10-12 | 2021-02-26 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Integrated pure-dry high-voltage bushing with mounting flange insulation structure and manufacturing method thereof |
-
2011
- 2011-05-13 CN CN2011201510658U patent/CN202049188U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102779626A (en) * | 2012-08-21 | 2012-11-14 | 浙江省电力公司电力科学研究院 | High-voltage bushing end screen elastic sheet type leading out device |
| CN112420290A (en) * | 2020-10-12 | 2021-02-26 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Integrated pure-dry high-voltage bushing with mounting flange insulation structure and manufacturing method thereof |
| CN112420290B (en) * | 2020-10-12 | 2022-09-16 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Integrated pure-dry high-voltage bushing with mounting flange insulation structure and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111123 Termination date: 20130513 |