CN203085335U - Glue impregnated paper capacitance-type transformer bushing - Google Patents
Glue impregnated paper capacitance-type transformer bushing Download PDFInfo
- Publication number
- CN203085335U CN203085335U CN 201220584229 CN201220584229U CN203085335U CN 203085335 U CN203085335 U CN 203085335U CN 201220584229 CN201220584229 CN 201220584229 CN 201220584229 U CN201220584229 U CN 201220584229U CN 203085335 U CN203085335 U CN 203085335U
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- transformer
- cover plate
- insulating case
- capacitor
- bushing shell
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Abstract
The utility model discloses a glue impregnated paper capacitor-type transformer bushing. The transformer bushing comprises an inner conduit, a capacitor core and an insulating bush are coaxially and sequentially arranged on the periphery of the inner conduit, two ends of the inner conduit are equipped with a head connector and a tail connector respectively, the insulating bush comprises an epoxy glass fiber pipe and an organic composite silicon rubber bush coated on the periphery of the epoxy glass fiber pipe, the capacitor core is of an epoxy resin glue impregnated paper insulating structure, and SF6 gas is filled between the capacitor core and the insulating bush. By using the glue impregnated paper capacitor-type transformer bushing provided by the utility model, domestic blanks in the development of 550kV glue impregnated paper capacitor-type transformer bushings are filled, national dependence on imported dry-type bushing products is reduced, problems of sealing and current-carrying of extra-high voltage epoxy impregnated-type bushings are solved, and domestication requirements for glue impregnated paper capacitor-type transformer bushings are met.
Description
Technical field
The utility model relates to transformer and fully closed combined electric unit field, and particularly a kind of glue soaks paper capacitor formula bushing shell for transformer; The turnover line that is mainly used in oil-filled transformer connects, and plays insulation and support effect.
Background technology
Adopt the glue of epoxy resin impregnated insulating paper technology manufacturing to soak paper capacitor formula bushing shell for transformer, have non-maintaining, pollution-free, volume is little, advantage such as in light weight, easy to use, be subjected to more and more users' welcome, make its bright spot that becomes sleeve pipe market, obtain user's favor.Along with the development of electrical network, adopt glue to soak paper dry type capacitive transformer sleeve pipe and can accomplish low noise, pollution-free, fire prevention, explosion-proof, small-sized modularization.Do not have the trend that oiling develops according to electric power system, dry sleeve has good market prospects.
Along with dry sleeve rapid application at home in recent years, and the import dry sleeve costs an arm and a leg, and development superhigh pressure dry-type transformer sleeve pipe has become the instant responsibility of domestic dry sleeve manufacturer.Country is just carrying out the extra-high voltage grid construction now, yet domestic soaking at 550kV/1250A glue is in space state aspect the development of paper capacitor formula bushing shell for transformer always.
The utility model content
The purpose of this utility model is to provide a kind of 550kV/1250A glue to soak paper capacitor formula bushing shell for transformer, to fill the domestic gaps.
To achieve these goals, the utility model adopts following technical scheme:
A kind of glue soaks paper capacitor formula bushing shell for transformer, comprises inner catheter, coaxial capacitor core and the insulating case of being provided with successively of inner catheter periphery; The two ends of inner catheter are separately installed with head connector and afterbody connector.
The utility model further improves and is: insulating case comprises the expoxy glass fiber tube and is coated on the organic composite silicon rubber sleeve of expoxy glass fiber tube periphery.
The utility model further improves and is: capacitor core adopts epoxide-resin glue to soak the paper insulation structure.
The utility model further improves and is: be filled with SF between capacitor core and the insulating case
6Gas.
The utility model further improves and is: the head connector comprises grading ring, terminal block, bearing, current-carrying spring, hold-down nut, pin, positioning seat, pressing plate, rubber washer, cover plate and pigtail splice; The head periphery of insulating case is provided with adpting flange, and pressing plate is fixedlyed connected with the adpting flange of insulating case head, and the center of pressing plate has a through hole; Cover plate is fixed in through hole in the pressing plate by flange, and cover plate takes the shape of the letter U, and cover plate bottom centre has a through hole, passes for inner catheter; Positioning seat is fixed in the cover plate bottom, and bearing is fixed in the cover plate top; Terminal block is fixed on the bearing; Pigtail splice is positioned at inner catheter, and pin passes pigtail splice and tightens fixing by hold-down nut; Pigtail splice is electrically connected bearing by its inner current-carrying spring, plane contact and pass through screw between bearing and the terminal block.
The utility model further improves and is: axial seal between cover plate and the positioning seat; Between bearing and the cover plate, between pressing plate and the cover plate, all end face seals between pressing plate and the insulating case.
The utility model further improves and is: the afterbody connector comprises first seal washer, packing ring, base and second seal washer; Capacitor core and be arranged between the packing ring of its underpart and be provided with first seal washer, packing ring and be arranged between the base of its underpart and be provided with second seal washer, base is provided with the screw that voltage equalizing ball is installed.
The utility model further improves and is: the insulating case afterbody is provided with adpting flange; Capacitor core is provided with a bulge-structure, and branch sleeve is installed on the bulge-structure of capacitor core; The adpting flange of insulating case afterbody is fixedlyed connected with upper flange, and upper flange is stuck in a side of bulge-structure, and the lower flange of branch sleeve is stuck in the opposite side of bulge-structure; Insulating case and upper flange, upper flange and branch sleeve all adopt end face seal structure; The lower flange bottom of branch sleeve is fixed with pressing plate; Adopt the axial seal of O RunddichtringO between pressing plate, branch sleeve and the capacitor core.
The utility model further improves and is: be equipped with on the branch sleeve and detect SF
6The Pressure gauge of gas and self-styled valve.
The utility model further improves and is: be equipped with on the branch sleeve that dielectric loss, the office of measuring sleeve pipe put and the measurement mechanism of capacitance.
With respect to prior art, the utlity model has following beneficial effect:
(1) main insulation of sleeve pipe adopts epoxide-resin glue to soak the paper insulation structure; External insulation is the organic composite silicon rubber sleeve; The sleeve pipe top seal is also filled the SF6 gas-insulated; (2) sleeve pipe adopts brand-new head seal and current-carrying structure; (3) employing clamps structure between branch sleeve and the dry type capacitor core; (4) sleeve pipe adopts single guide-tube structure, helps the inside pipe casing heat radiation; (5) design has double sealing structure between capacitor core and the branch sleeve, can prevent effectively that the SF6 gas leakage is to transformer inside; (6) the branch sleeve upper flange at sleeve pipe is equipped with Pressure gauge and the self-styled valve arrangement that detects SF6 gas; (7) the current-carrying mode is for wearing cable formula current-carrying structure; (8) for reducing the radio interference that partial discharge produced at sleeve pipe high pressure position, be provided with anticorona ring at the high-voltage connection position of sleeve pipe head; (9) sleeve design has considered that interior insulation, external insulation, the change of current become the insulation molding part of sleeve pipe afterbody arranged around and influence each other thereof.
The utility model has been filled up the blank that domestic 550kV glue soaks the development of paper capacitor formula bushing shell for transformer; Reduce the dependence of country to import dry sleeve product; Solved the sealing and the current-carrying problem of ultra high voltage epoxy impregnation formula sleeve pipe, satisfied glue and soaked the requirement that paper capacitor formula bushing shell for transformer domesticizes.
Description of drawings
Fig. 1 is the outline drawing that the utility model glue soaks paper capacitor formula bushing shell for transformer;
Fig. 2 is the partial schematic diagram of sleeve pipe head;
Fig. 3 is the structural representation at sleeve pipe middle part;
Fig. 4 is the partial schematic diagram of sleeve pipe afterbody.
Embodiment
Describe the technical solution of the utility model in detail below in conjunction with accompanying drawing.
See also Fig. 1 to shown in Figure 4, a kind of glue of the utility model soaks paper capacitor formula bushing shell for transformer, comprises head connector 100, middle part 102 and afterbody connector 102.
A kind of glue of the utility model soaks paper capacitor formula bushing shell for transformer center and is provided with a metal inner catheter 13, and inner catheter 13 peripheries are provided with successively as the capacitor core 31 of main insulation and the insulating case 12 of external insulation; Main insulation adopts epoxide-resin glue to soak the paper insulation structure, and insulating case 12 coats organic composite silicone rubber cover for expoxy glass fiber tube periphery, fills SF6 gas between main insulation and external insulation.The two ends of inner catheter 13 are separately installed with head connector 100 and afterbody connector 102.
Head connector 100 comprises grading ring 1, terminal block 2, bearing 3, current-carrying spring 4, hold-down nut 5, pin 6, positioning seat 7, pressing plate 8, rubber washer 9, cover plate 10, pigtail splice 11 and insulating case 12.The head periphery of insulating case 12 is provided with adpting flange, and pressing plate 8 is fixedlyed connected with the adpting flange of insulating case 12 heads, and the center of pressing plate 8 has a through hole; Cover plate 10 is fixed in through hole in the pressing plate 8 by flange, and cover plate 10 takes the shape of the letter U, and cover plate 10 bottom centre have a through hole, passes for inner catheter 13, and positioning seat 7 is fixed in cover plate 10 bottoms by flange, and bearing 3 is fixed in cover plate 10 tops; Terminal block 2 is fixed on the bearing 3.Pigtail splice 11 is positioned at inner catheter 13, and pin 6 passes pigtail splice 11 and tightens by hold-down nut 5 and guarantees mechanical strength; The head current-carrying of sleeve pipe is that the electric current of pigtail splice 11 is transferred on the bearing 3 by the current-carrying spring, pass through the plane contact delivered current between bearing 3 and the terminal block 2, and compress by the axial force that screw produces, terminal block 2 is contacted reliably with bearing 3, electric current is delivered on the terminal block 2 from bearing 3.
Adopt the axial seal structure between cover plate 10 and the positioning seat 7, between bearing 3 and the cover plate 10, between pressing plate 8 and the cover plate 10, between pressing plate 8 and the insulating case 12, adopt the end face seal form.The decrement of rubber is by the size Control of seal groove, and then by screw-driving, Sealed casing pipe inside prevents that inside pipe casing from making moist and inner SF
6Gas leakage.Oil to transformer adopts the sealing of two places, adopt between bearing 3 and the cover plate 10 apart from the RunddichtringO structure, the decrement of rubber is by the size Control of seal groove, by 4 screw-drivings, be fixed on the cover plate 10, adopt the axial seal structure between cover plate 10 and the positioning seat 7, between to have an O RunddichtringO to produce axial force compression rubber by screw-driving be the sealing of first road.Adopt plane sealing structure to use the rectangle rubber washer between pressing plate 8 and the insulating case 12, fix, be used for Sealed casing pipe inside with screw-driving.
Head construction is considerable for current-carrying structure and hermetically-sealed construction separating treatment, the distortion of sealing ring in working pressure range is between 25%～35%, spacing measure is taked at all sealing positions, in order to avoid the excessive compression of sealing ring guarantees that sealing property is reliable.Be filled with the SF of 0.2MPa at inside pipe casing
6Gas, SF
6The Sealing Technology of gas is had relatively high expectations, and the roughness of all sealing surfaces has brought up to 3.2 by 6.3.
See also shown in Figure 4ly, sleeve pipe afterbody connector 102 comprises capacitor core 31, first seal washer 32, packing ring 33, base 34 and second seal washer 35.With 32 transition of first seal washer, with 35 transition of second seal washer, base 34 is provided with the screw 36 that voltage equalizing ball is installed between packing ring 33 and the base 34 between capacitor core 31 and the packing ring 33.Because of this casing current is less is 1250A, adopts and wears not current-carrying of cable formula current-carrying structure event conduit; Use cable to pass the pigtail splice 11 that inner catheter 13 connects in the inner catheter 13 from afterbody.
See also shown in Figure 3ly, sleeve pipe middle part 101 comprises insulating case 12, seal washer 22, upper flange 23, plug cock 24, seal washer 25, branch sleeve 26, measurement mechanism 27, seal washer 28 and pressing plate 29.
Adopt between branch sleeve 26 and the dry type capacitor core 31 and clamp structure, as the axial location of whole sleeve pipe, design has double sealing structure between capacitor core 31 and the branch sleeve 6, can effectively prevent SF
6Gas leakage is to transformer inside; Insulating case 12 adopts end face seal structure with upper flange 23, upper flange 23 with branch sleeve 26, adopts the O RunddichtringO to carry out axial seal between pressing plate 29, branch sleeve 6 and the dry type capacitor core 31.
On branch sleeve 26, be equipped with and detect SF
6The Pressure gauge of gas and self-styled valve arrangement; Can guarantee that casing safety moves reliably.Measurement mechanism 27 is housed on branch sleeve 26, and the dielectric loss, the office that are used for measuring sleeve pipe put and capacitance, guarantee that the electric property of sleeve pipe is reliable.
The basic mechanical design feature index that the utility model 550kV/1250A glue soaks paper capacitor formula bushing shell for transformer is as follows:
Rated voltage 550kV
Rated current 1250A
60s industrial frequency withstand voltage 870kV
Full lightning impulse withstand voltage 1800kV
Switching impulse withstand voltage 1300kV
Dielectric loss tan δ≤0.6%
Setting angle is any.
Claims (10)
1. a glue soaks paper capacitor formula bushing shell for transformer, it is characterized in that, comprises inner catheter (13), coaxial capacitor core (31) and the insulating case (12) of being provided with successively of inner catheter (13) periphery; The two ends of inner catheter (13) are separately installed with head connector (100) and afterbody connector (102).
2. a kind of glue according to claim 1 soaks paper capacitor formula bushing shell for transformer, it is characterized in that, insulating case (12) comprises the expoxy glass fiber tube and is coated on the organic composite silicon rubber sleeve of expoxy glass fiber tube periphery.
3. a kind of glue according to claim 1 soaks paper capacitor formula bushing shell for transformer, it is characterized in that, capacitor core (31) adopts epoxide-resin glue to soak the paper insulation structure.
4. a kind of glue according to claim 1 soaks paper capacitor formula bushing shell for transformer, it is characterized in that, is filled with SF between capacitor core (31) and the insulating case (12)
6Gas.
5. a kind of glue according to claim 1 soaks paper capacitor formula bushing shell for transformer, it is characterized in that head connector (100) comprises grading ring (1), terminal block (2), bearing (3), current-carrying spring (4), hold-down nut (5), pin (6), positioning seat (7), pressing plate (8), rubber washer (9), cover plate (10) and pigtail splice (11); The head periphery of insulating case (12) is provided with adpting flange, and pressing plate (8) is fixedlyed connected with the adpting flange of insulating case (12) head, and the center of pressing plate (8) has a through hole; Cover plate (10) is fixed in through hole in the pressing plate (8) by flange, and cover plate (10) takes the shape of the letter U, and cover plate (10) bottom centre has a through hole, passes for inner catheter (13); Positioning seat (7) is fixed in cover plate (10) bottom, and bearing (3) is fixed in cover plate (10) top; Terminal block (2) is fixed on the bearing (3); Pigtail splice (11) is positioned at inner catheter (13), and pin (6) passes pigtail splice (11) and tightens fixing by hold-down nut (5); Pigtail splice (11) is electrically connected bearing (3) by its inner current-carrying spring, plane contact and pass through screw between bearing (3) and the terminal block (2).
6. a kind of glue according to claim 5 soaks paper capacitor formula bushing shell for transformer, it is characterized in that axial seal between cover plate (10) and the positioning seat (7); Between bearing (3) and the cover plate (10), between pressing plate (8) and the cover plate (10), all end face seals between pressing plate (8) and the insulating case (12).
7. a kind of glue according to claim 1 soaks paper capacitor formula bushing shell for transformer, it is characterized in that, afterbody connector (102) comprises first seal washer (32), packing ring (33), base (34) and second seal washer (35); Capacitor core (31) and be arranged between the packing ring (33) of its underpart and be provided with first seal washer (32), packing ring (33) and be arranged between the base (34) of its underpart and be provided with second seal washer (35), base (34) is provided with the screw (36) that voltage equalizing ball is installed.
8. a kind of glue according to claim 1 soaks paper capacitor formula bushing shell for transformer, it is characterized in that, insulating case (12) afterbody is provided with adpting flange; Capacitor core (31) is provided with a bulge-structure, and branch sleeve (26) is installed on the bulge-structure of capacitor core (31); The adpting flange of insulating case (12) afterbody is fixedlyed connected with upper flange (23), and upper flange (23) is stuck in a side of bulge-structure, and the lower flange of branch sleeve (26) is stuck in the opposite side of bulge-structure; Insulating case (12) all adopts end face seal structure with upper flange (23), upper flange (23) with branch sleeve (26); The lower flange bottom of branch sleeve (26) is fixed with pressing plate (29); Adopt the axial seal of O RunddichtringO between pressing plate (29), branch sleeve (6) and the capacitor core (31).
9. a kind of glue according to claim 8 soaks paper capacitor formula bushing shell for transformer, it is characterized in that, is equipped with on the branch sleeve (26) to detect SF
6The Pressure gauge of gas and self-styled valve.
10. a kind of glue according to claim 8 soaks paper capacitor formula bushing shell for transformer, it is characterized in that, is equipped with on the branch sleeve (26) that dielectric loss, the office of measuring sleeve pipe put and the measurement mechanism (27) of capacitance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220584229 CN203085335U (en) | 2012-11-07 | 2012-11-07 | Glue impregnated paper capacitance-type transformer bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220584229 CN203085335U (en) | 2012-11-07 | 2012-11-07 | Glue impregnated paper capacitance-type transformer bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203085335U true CN203085335U (en) | 2013-07-24 |
Family
ID=48831151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220584229 Expired - Lifetime CN203085335U (en) | 2012-11-07 | 2012-11-07 | Glue impregnated paper capacitance-type transformer bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203085335U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104530716A (en) * | 2014-12-23 | 2015-04-22 | 中国西电电气股份有限公司 | Hot-vulcanization conducting silicon rubber for transformer casing buffer layers and preparation method thereof |
| CN106848640A (en) * | 2017-04-06 | 2017-06-13 | 山东电力设备有限公司 | A kind of grading ring special wiring terminal |
| CN107508224A (en) * | 2016-06-14 | 2017-12-22 | 沈阳和新套管有限公司 | The core body mucilage binding structure and method at gas-insulated end in a kind of direct-current wall bushing |
| CN109494028A (en) * | 2018-12-05 | 2019-03-19 | 西安西电高压套管有限公司 | Single guide-tube structure oilpaper casing |
-
2012
- 2012-11-07 CN CN 201220584229 patent/CN203085335U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104530716A (en) * | 2014-12-23 | 2015-04-22 | 中国西电电气股份有限公司 | Hot-vulcanization conducting silicon rubber for transformer casing buffer layers and preparation method thereof |
| CN107508224A (en) * | 2016-06-14 | 2017-12-22 | 沈阳和新套管有限公司 | The core body mucilage binding structure and method at gas-insulated end in a kind of direct-current wall bushing |
| CN107508224B (en) * | 2016-06-14 | 2023-10-20 | 沈阳和新套管有限公司 | Core body gluing structure and method for gas insulation end in direct-current wall bushing |
| CN106848640A (en) * | 2017-04-06 | 2017-06-13 | 山东电力设备有限公司 | A kind of grading ring special wiring terminal |
| CN109494028A (en) * | 2018-12-05 | 2019-03-19 | 西安西电高压套管有限公司 | Single guide-tube structure oilpaper casing |
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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 |
Granted publication date: 20130724 |
|
| CX01 | Expiry of patent term |