CN201860065U - Glue-impregnated capacitance type direct-current wall bushing - Google Patents
Glue-impregnated capacitance type direct-current wall bushing Download PDFInfo
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- CN201860065U CN201860065U CN2010206183677U CN201020618367U CN201860065U CN 201860065 U CN201860065 U CN 201860065U CN 2010206183677 U CN2010206183677 U CN 2010206183677U CN 201020618367 U CN201020618367 U CN 201020618367U CN 201860065 U CN201860065 U CN 201860065U
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- wall bushing
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Abstract
The utility model discloses a glue-impregnated capacitance type direct-current wall bushing, which comprises a tubular capacitor core and insulating jackets axially fastened on the peripheral wall of the capacitor core. The glue-impregnated capacitance type direct-current wall bushing is characterized in that a conductive rod is covered inside the capacitor core, wiring boards are respectively disposed at two ends of the conductive rod and connected with cover plates at two ends of the insulating jackets, an electrode is arranged between the capacitor core and the conductive rod, the insulating jackets distributed on the peripheral wall of the capacitor core are connected by a connecting sleeve, and oil plugs and a measuring lead device are respectively disposed on the side wall of the connecting sleeve. The capacitor core, interlayer thickness, creping height of creping paper, insulation structural design and permissible value of the intensity of a direct-current field of the sleeve are reasonably selected, so that the sleeve has the advantages of small dielectric loss and partial discharge, simple and reliable sealing structure, zero pollution and the like.
Description
Technical field
The utility model belongs to the electric power electric field, and particularly a kind of glue soaks paper capacitor formula dry type direct current wall bushing.
Background technology
The direct current wall bushing is to be used for the conductor that ground connection barrier (body of wall) passed in shielding, and sleeve pipe is isolated conductor and surrounding medium, avoids the short circuit of conductor and electric current to leak, and is used for the insulation and the support of conductor.
The electric performance requirement of sleeve pipe:
1. the electric durability energy of insulating material must be chosen the diameter of reasonable electric capacity core body, and inner all layouts of the piezoelectricity utmost point make axially, radially field intensity is even, improve harmful office and put incipient discharge voltage.
2. capacitance of bushing layer thickness, the wrinkling height of crimped paper should be not low excessively.Crossing low meeting influence poring rate, and low excessively poring rate will cause prolong pouring time under the certain situation of sizing material gelation time, influence the partial discharge performance of product.
3. choose rational insulation system design and reach the dielectric constant measurement value.
4. the electrosurgical trocar field distribution should be taken all factors into consideration the influence of AC field and DC electric field.Do not tolerate corresponding direct current withstand voltage and inner electric field strength for direct voltage effect setting of casing capacitance core physical efficiency, need to determine the permissible value of sleeve pipe DC electric field intensity.
Existing direct current wall bushing can not reach above-mentioned electric property requirement, can't satisfy the requirement of domestic dry type direct current wall bushing.
The utility model content
The purpose of this utility model provides a kind of DC engineering and soaks paper capacitor formula dry type wall bushing with glue, it is by rationally choosing electric capacity core body, layer thickness, the wrinkling height of crimped paper and insulation system design, and the permissible value of sleeve pipe DC electric field intensity, make that this sleeve pipe has that dielectric loss is little, office put little, hermetically-sealed construction is simple and reliable, advantage such as pollution-free.
The purpose of this utility model realizes by following technical proposals.
A kind of glue soaks paper capacitor formula direct current wall bushing, comprise tubulose electric capacity core body, reach the insulating coating that is installed on vertically on the external perisporium of this capacitance core, it is characterized in that: in described electric capacity core body, be coated with conducting rod, the two ends of this conducting rod are respectively arranged with terminal block, and terminal block is connected with the set cover plate in insulating coating two ends; Be provided with electrode between described electric capacity core body and the conducting rod, the insulating coating that distributes on the external perisporium of described capacitance core is connected in series by branch sleeve, and is respectively equipped with plug cock and measuring lead wire device on the branch sleeve sidewall.
Of the present utility model being further characterized in that:
The insulating coating that distributes on the external perisporium of described capacitance core is 20～40 stratiform full skirt shape overcoats that are connected in series mutually, and insulating coating links to each other by the flange that is arranged on the branch sleeve.
Described insulating coating is taked the organic composite silicon rubber sleeve; This full skirt shape silicone rubber sleeve is big umbellule structure, and the gamp diameter is 65mm, and the umbellule diameter is 50mm, and the umbrella spacing is 100mm, and creepage distance is 3150mm.
The external diameter of described electric capacity core body is φ 120mm, and the electric capacity core body is that the aluminium foil, cable paper, electrode and the insulating paper protective layer that coat mutually from the inside to the outside successively constitute, and this structure forms the equal piezoelectricity utmost point and arranges.
Described capacitance core body thickness is 1.6mm, and cable paper and insulating paper are taked crimped paper, and its wrinkling height is 0.3～0.4mm.
Described insulating coating closing panel inboard is by smearing the fluid sealant fixing seal; It between described branch sleeve and the flange flat seal; Adopt twice axle envelope between described branch sleeve and the electric capacity core body.
The maximum field strength of described sleeve pipe DC electric field intensity is 2.94kV/mm.
Characteristics of the present utility model are:
1) chooses the diameter of reasonable electric capacity core body, inner all layouts of the piezoelectricity utmost point.Make axially, radially field intensity is even, improve harmful office and put incipient discharge voltage.
2) choose the suitable wrinkling height of capacitance of bushing layer thickness, crimped paper.Improve the partial discharge performance of product.
3) taked the external insulation structure design.It is good that the external insulation structure of this organic composite silicon rubber sleeve has an antifouling property, the mechanical strength height, and meet the development trend of industry.
4) current-carrying of sleeve pipe and design of Sealing Structure.The screw thread that the current-carrying structure of sleeve pipe is indoor end by indoor terminal block and guide rod contact transmission current to the fuse guide rod, and the screw thread that outdoor end is passed through fuse guide rod and outdoor terminal block again contacts transmission current to outdoor terminal block.Current-carrying is simple and reliable for structure.
Owing to be directly current-carrying structure of solid fine copper rod, so head seal only adopts and smears fluid sealant in the cover plate and silicone rubber sleeve is fixed and sealed.
Adopt between branch sleeve and the dry type electric capacity core body and clamp structure, adopt flat seal between flange and the branch sleeve, adopt twice axle envelope between branch sleeve and the electric capacity core body, hermetically-sealed construction is simple and reliable.
5) influence of AC field and DC electric field is taken all factors into consideration in the electrosurgical trocar field distribution.According to the calculating to this product DC electric field under direct voltage 75kV, maximum field strength is 2.94kV/mm.These data through after evidence, product can pass through DC voltage withstand test under this field intensity.
Description of drawings
Fig. 1 is the utility model structural representation.
Among the figure: 1, terminal block; 2, cover plate; 3, fluid sealant; 4, insulating coating; 5, electric capacity core body; 6, conducting rod; 7, electrode; 8, flange; 9, plug cock; 10, measuring lead wire device; 11, branch sleeve.
Embodiment
As shown in Figure 1, this glue soaks paper capacitor formula direct current wall bushing, comprise tubulose electric capacity core body 5, reach the insulating coating 4 that is installed on vertically on these electric capacity core body 5 periphery walls, wherein: in described electric capacity core body 5, be coated with conducting rod 6, the two ends of this conducting rod 6 are respectively arranged with terminal block 1, and terminal block 1 is connected with the set cover plate 2 in insulating coating 4 two ends; Be provided with electrode 7 between described electric capacity core body 5 and the conducting rod 6, the insulating coating 4 that distributes on described electric capacity core body 5 periphery walls is connected in series by branch sleeve 11, and is respectively equipped with plug cock 9 and measuring lead wire device 10 on branch sleeve 11 sidewalls.The insulating coating 4 that distributes on electric capacity core body 5 periphery walls is 20～40 stratiform full skirt shape overcoats that are connected in series mutually, and insulating coating 4 links to each other by the flange 8 that is arranged on the branch sleeve 11.
As improvements over the prior art, the external diameter of electric capacity core body 5 is designed to φ 120mm, and electric capacity core body 5 is that the aluminium foil, cable paper, electrode 7 and the insulating paper protective layer that coat mutually from the inside to the outside successively constitute, and this structure constitutes inner all piezoelectricity utmost points and arranges.The thickness of electric capacity core body 5 is 1.6mm, and cable paper and insulating paper are taked crimped paper, and its wrinkling height is 0.3～0.4mm.
The utility model is taked the external insulation structure design, and its insulating coating 4 is taked the organic composite silicon rubber sleeve; This full skirt shape silicone rubber sleeve is big umbellule structure, and the gamp diameter is 65mm, and the umbellule diameter is 50mm, and the umbrella spacing is 100mm, and creepage distance is 3150mm.
The utility model is taked the current-carrying and the design of Sealing Structure of sleeve pipe, the screw thread that the current-carrying structure of its sleeve pipe is indoor end by indoor terminal block 1 and conducting rod 6 contact transmission current to the conducting rod 6 of electric capacity core body 5, and the screw thread that outdoor end is passed through fuse guide rod and outdoor terminal block again contacts transmission current to outdoor terminal block.Current-carrying is simple and reliable for structure.
Its insulating coating 4 closing panels 2 inboards are by smearing fluid sealant 3 fixing seals; Be flat seal between branch sleeve 11 and the flange 8; Branch sleeve adopts twice axle envelope about in the of 11 and between the electric capacity core body 5.
The influence of AC field and DC electric field is taken all factors into consideration in the electrosurgical trocar field distribution, and the maximum field strength of sleeve pipe DC electric field intensity is designed to 2.94kV/mm.
The utility model has been owing to taked the said structure feature, can make glue soak paper capacitor formula direct current wall bushing axially, radially field intensity is even, improves harmful office and puts incipient discharge voltage; Improve the partial discharge performance of product; The external insulation antifouling property is good, the mechanical strength height, and meet the development trend of industry; Current-carrying, hermetically-sealed construction are simple and reliable; Product can pass through DC voltage withstand test under certain field intensity.
Claims (7)
1. a glue soaks paper capacitor formula direct current wall bushing, comprise tubulose electric capacity core body (5), reach the insulating coating (4) that is installed on vertically on this electric capacity core body (5) periphery wall, it is characterized in that: in described electric capacity core body (5), be coated with conducting rod (6), the two ends of this conducting rod (6) are respectively arranged with terminal block (1), and terminal block (1) is connected with the set cover plates in insulating coating (4) two ends (2) respectively; Be provided with electrode (7) between described electric capacity core body (5) and the conducting rod (6), the insulating coating (4) that distributes on described electric capacity core body (5) periphery wall is connected in series by branch sleeve (11), and is respectively equipped with plug cock (9) and measuring lead wire device (10) on branch sleeve (11) sidewall.
2. glue according to claim 1 soaks paper capacitor formula direct current wall bushing, it is characterized in that: the insulating coating (4) that distributes on described electric capacity core body (5) periphery wall is made of 20～40 stratiform full skirt shape overcoats that are connected in series mutually, and insulating coating (4) links to each other by the flange (8) that is arranged on the branch sleeve (11).
3. glue according to claim 2 soaks paper capacitor formula direct current wall bushing, it is characterized in that: described insulating coating (4) is taked the organic composite silicon rubber sleeve; This full skirt shape silicone rubber sleeve is big umbellule structure, and the gamp diameter is 65mm, and the umbellule diameter is 50mm, and the umbrella spacing is 100mm, and creepage distance is 3150mm.
4. glue according to claim 1 soaks paper capacitor formula direct current wall bushing; it is characterized in that: the external diameter of described electric capacity core body (5) is φ 120mm, and electric capacity core body (5) is that the aluminium foil, cable paper, electrode (7) and the insulating paper protective layer that coat mutually from the inside to the outside successively constitute.
5. glue according to claim 4 soaks paper capacitor formula direct current wall bushing, it is characterized in that: described electric capacity core body (5) thickness is 1.6mm, and cable paper and insulating paper are taked crimped paper, and its wrinkling height is 0.3～0.4mm.
6. glue according to claim 1 soaks paper capacitor formula direct current wall bushing, it is characterized in that: described insulating coating (4) closing panel (2) is inboard by smearing fluid sealant (3) fixing seal; Between described branch sleeve (11) and the flange (8) is flat seal; Adopt twice axle envelope between described branch sleeve (11) inwall and the electric capacity core body (5).
7. glue according to claim 1 soaks paper capacitor formula direct current wall bushing, it is characterized in that: the maximum field strength of described sleeve pipe DC electric field intensity is 2.94kV/mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206183677U CN201860065U (en) | 2010-11-22 | 2010-11-22 | Glue-impregnated capacitance type direct-current wall bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206183677U CN201860065U (en) | 2010-11-22 | 2010-11-22 | Glue-impregnated capacitance type direct-current wall bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201860065U true CN201860065U (en) | 2011-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206183677U Expired - Lifetime CN201860065U (en) | 2010-11-22 | 2010-11-22 | Glue-impregnated capacitance type direct-current wall bushing |
Country Status (1)
| Country | Link |
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| CN (1) | CN201860065U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500967A (en) * | 2013-10-22 | 2014-01-08 | 国家电网公司 | Resin impregnated paper capacitance type extra-high-voltage alternating current-direct current wall bushing |
| CN106205980A (en) * | 2016-08-22 | 2016-12-07 | 江苏智达高压电气有限公司 | A kind of extra-high-voltage alternating current bushing shell for transformer |
| WO2018132951A1 (en) * | 2017-01-17 | 2018-07-26 | 清华大学 | Wall bushing using non-linear conductive composite material-based voltage equalization structure |
| CN108923355A (en) * | 2018-10-12 | 2018-11-30 | 山东彼岸电力科技有限公司 | A kind of capacitive type wall bushing |
-
2010
- 2010-11-22 CN CN2010206183677U patent/CN201860065U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500967A (en) * | 2013-10-22 | 2014-01-08 | 国家电网公司 | Resin impregnated paper capacitance type extra-high-voltage alternating current-direct current wall bushing |
| CN106205980A (en) * | 2016-08-22 | 2016-12-07 | 江苏智达高压电气有限公司 | A kind of extra-high-voltage alternating current bushing shell for transformer |
| CN106205980B (en) * | 2016-08-22 | 2018-08-31 | 江苏智达高压电气有限公司 | A kind of extra-high-voltage alternating current bushing shell for transformer |
| WO2018132951A1 (en) * | 2017-01-17 | 2018-07-26 | 清华大学 | Wall bushing using non-linear conductive composite material-based voltage equalization structure |
| CN108923355A (en) * | 2018-10-12 | 2018-11-30 | 山东彼岸电力科技有限公司 | A kind of capacitive type wall bushing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110608 |