CN203839158U - Oil-oil bushing used inside oil-immersed transformer - Google Patents
Oil-oil bushing used inside oil-immersed transformer Download PDFInfo
- Publication number
- CN203839158U CN203839158U CN201420179818.XU CN201420179818U CN203839158U CN 203839158 U CN203839158 U CN 203839158U CN 201420179818 U CN201420179818 U CN 201420179818U CN 203839158 U CN203839158 U CN 203839158U
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- oil
- main body
- casing main
- casing
- filled transformer
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Abstract
The utility model discloses an oil-oil bushing used inside an oil-immersed transformer and belongs to the technical field of transformer bushings. The oil-oil bushing used inside the oil-immersed transformer comprises a conductive rod and further comprises a bushing body, a threaded press ring and a sealing ring. The conductive rod penetrates through a through hole axially formed in the bushing body, and a gap sealing device is arranged between the conductive rod and the bushing body. External threads are arranged at one end of the bushing body and end on a stepped face, the bushing body is sleeved with the sealing ring, and the sealing ring is attached to the stepped face. The threaded press ring and the bushing body are connected through the external threads, and an oil tank wall inside the transformer is arranged between the threaded press ring and the sealing ring. The oil-oil bushing used inside the oil-immersed transformer is simple in structure, light in weight, convenient to install and detach, good in seal performance and insulativity, long in service life, convenient to machine and manufacture, low in cost and particularly suitable for 35kV oil-immersed transformers.
Description
Technical field
The utility model relates to a kind of sleeve pipe, more particularly, relates to a kind of oily tubing and casing for oil-filled transformer inside.
Background technology
Along with developing rapidly of China's power industry, transformer consumption surges, also higher to the requirement of transformer.In the transformer course of work, bushing shell for transformer is one of critical component affecting transformer power transmission and transformation service behaviour.The winding of oil-filled transformer and iron core are all contained in the fuel tank that is full of transformer oil, and fuel tank is welded into steel plate.Oil-filled transformer generally has the independent oil system of several mutual isolation, when oil-filled transformer moves, oil in these independent oil systems is not connected, oil is not identical with operating condition yet, when two the independent oil system of isolation carries out circuit connection mutually, just need to use insulating sleeve.This insulating sleeve is immersed in transformer oil completely, therefore also referred to as oily tubing and casing, for realizing the energising of two oil tank of transformer, and play the effect of isolating two fuel tanks.
Summary of the invention
1. the technical problem that utility model will solve
The purpose of this utility model is to overcome existing oil-filled transformer inner sleeve complex structure, sealing and poor insulativity, manufacture difficulty is large, cost is high, the heavy frangible deficiency of porcelain bushing type sleeve pipe, a kind of oily tubing and casing for oil-filled transformer inside is provided, adopt the technical solution of the utility model, not only simple in structure, quality is light, easy installation and removal, and sealing and good insulating, long service life, while convenient processing and manufacture, with low cost, be particularly useful for the oil-immersed and high-voltage transformer of 35kV level.
2. technical scheme
For achieving the above object, the technical scheme that the utility model provides is:
A kind of oily tubing and casing for oil-filled transformer inside of the present utility model, comprise conducting rod, also comprise casing main body, threaded ring and sealing ring, the through hole that described conducting rod axially arranges through casing main body, and be provided with clearance sealing device between conducting rod and casing main body; One end of described casing main body is provided with external screw thread, and this external screw thread ends at a step surface, and described sealing ring is sheathed on casing main body, and fits with above-mentioned step surface; Described threaded ring is connected by above-mentioned external screw thread with casing main body, and is the oil tank wall of transformer inside between threaded ring and sealing ring.
Further, described clearance sealing device comprises the wedge-type seal skin pearl being closely sheathed on conducting rod, pad and the nut that compresses this wedge-type seal skin pearl, through hole one end of described casing main body is provided with taper surface, described wedge-type seal skin pearl and this taper surface closely cooperate, described conducting rod at the through hole two ends of casing main body respectively by pad and fastening nuts.
Further, one end end face that described casing main body is installed wedge-type seal skin pearl is provided with the groove coaxial with through hole and cannelure, and described cannelure is distributed in the outside of groove, for increasing the creepage distance of casing main body.
Further, on one end end face of described casing main body away from wedge-type seal skin pearl, offer oil groove.
Further, described oil groove is radially offered along casing main body, and passes the through hole of casing main body.
Further, be upwards distributed with in the week of described threaded ring for loading the jack of instrument installation or removal sleeve pipe.
Further, the material of described casing main body and threaded ring is nylon or insulating composite material.
Further, the two ends of described conducting rod are connected wire by pad with nut respectively.
Further, described casing main body and threaded ring are made by nylon rod or insulating composite material bar machining.
3. beneficial effect
The technical scheme that adopts the utility model to provide, compares with existing known technology, has following beneficial effect:
(1) a kind of oily tubing and casing for oil-filled transformer inside of the present utility model, the through hole that its conducting rod axially arranges through casing main body, and be provided with clearance sealing device between conducting rod and casing main body; One end of casing main body is provided with external screw thread, and this external screw thread ends at a step surface, and sealing ring is sheathed on casing main body, and fits with above-mentioned step surface; Threaded ring is connected by above-mentioned external screw thread with casing main body, and is the oil tank wall of transformer inside between threaded ring and sealing ring, simple in structure, sealing and good insulating, and long service life, is particularly useful for the oil-immersed and high-voltage transformer of 35kV level;
(2) a kind of oily tubing and casing for oil-filled transformer inside of the present utility model, its clearance sealing device comprises the wedge-type seal skin pearl being closely sheathed on conducting rod, pad and the nut that compresses this wedge-type seal skin pearl, through hole one end of casing main body is provided with taper surface, wedge-type seal skin pearl and this taper surface closely cooperate, conducting rod at the through hole two ends of casing main body respectively by pad and fastening nuts, wedge-type seal skin pearl and taper surface closely cooperate, increased contact area, sealing effectiveness is better;
(3) a kind of oily tubing and casing for oil-filled transformer inside of the present utility model, one end end face that its casing main body is installed wedge-type seal skin pearl is provided with the groove coaxial with through hole and cannelure, cannelure is distributed in the outside of groove, by the design of groove and cannelure, increased casing main body face area, thereby increased the creepage distance of casing main body, protected the casing main body of insulation not damaged;
(4) a kind of oily tubing and casing for oil-filled transformer inside of the present utility model, on one end end face of its casing main body away from wedge-type seal skin pearl, offer oil groove, oil groove is radially offered along casing main body, and through the through hole of casing main body, guaranteed inside pipe casing can exhaust, oil-feed, reach insulation effect better;
(5) a kind of oily tubing and casing for oil-filled transformer inside of the present utility model, during due to installation, do not need the too large power that loads, threaded ring does not need to make the just polygon bodily form, only need upwards be distributed with in the week of threaded ring for loading the jack of instrument installation or removal sleeve pipe, convenient processing and manufacture, installing/dismounting is simple to operate;
(6) a kind of oily tubing and casing for oil-filled transformer inside of the present utility model, the material of its casing main body and threaded ring is nylon or insulating composite material, and casing main body and threaded ring are made by nylon rod or insulating composite material bar machining, have that quality is light, mechanical strength is good, thermal endurance, insulating properties and a good feature of resistance to wear; Employing nylon rod machining is manufactured, easily manufactured, and has the feature of good toughness, oil resistant, antidetonation, and has overcome the hygroscopic defect of nylon self, processing dimension good stability;
(7) a kind of oily tubing and casing for oil-filled transformer inside of the present utility model, the two ends of its conducting rod are connected wire by pad with nut respectively, and easy-to-connect is quick, and contact stabilization is reliable.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of a kind of oily tubing and casing for oil-filled transformer inside of the present utility model;
Fig. 2 is the casing main body structural representation in the utility model;
Fig. 3 is the threaded ring structural representation in the utility model.
Label declaration in schematic diagram:
1, casing main body; 2, conducting rod; 3, threaded ring; 4, oil tank wall; 5, sealing ring; 6, wedge-type seal skin pearl; 101, cannelure; 102, groove; 103, oil groove; 301, jack.
Embodiment
For further understanding content of the present utility model, in conjunction with the accompanying drawings and embodiments the utility model is described in detail.
Embodiment 1
In conjunction with Fig. 1, Fig. 2 and Fig. 3, a kind of oily tubing and casing for oil-filled transformer inside of the present embodiment, comprises casing main body 1, conducting rod 2, threaded ring 3 and sealing ring 5.Casing main body 1 is a multidiameter shape, the cylinder that comprises two sections of different-diameters, one section of cylinder that wherein diameter is less is provided with external screw thread, and this external screw thread ends at the formed step surface of cylinder of two sections of different-diameters, the axial of casing main body 1 is provided with a through hole, and this through hole is coaxial with casing main body 1.Conducting rod 2 passes the through hole of casing main body 1, and is provided with clearance sealing device between conducting rod 2 and casing main body 1, prevents that transformer oil is interconnected by the gap between conducting rod 2 and casing main body 1, affects the performance of each oil system of transformer.Sealing ring 5 is sheathed on casing main body 1, and fits with above-mentioned step surface, and sealing ring 5 is a rubber ring, good airproof performance; Threaded ring 3 is one circular, on its endoporus, be located at the internal thread that the external screw thread with above-mentioned casing main body 1 cooperatively interacts, threaded ring 3 is connected by above-mentioned internal and external screw thread with casing main body 1, and between threaded ring 3 and sealing ring 5, be the oil tank wall 4 of transformer inside, simple in structure, sealing and good insulating, long service life, is particularly useful for the oil-immersed and high-voltage transformer of 35kV level.
Referring to Fig. 1, the clearance sealing device in the present embodiment comprises the wedge-type seal skin pearl 6 being closely sheathed in conducting rod 2 polished rod parts, pad and the nut that compresses this wedge-type seal skin pearl 6.Through hole one end of casing main body 1 is provided with taper surface, this taper surface is specifically positioned at the side that casing main body 1 diameter is larger, lozenges and this taper surface of wedge-type seal skin pearl 6 closely cooperate, increased contact area, sealing effectiveness is better, conducting rod 2 respectively by pad and fastening nuts, and firmly compresses wedge-type seal skin pearl 6 at the through hole two ends of casing main body 1, has played good conduction and sealing effectiveness.In addition; one end end face that casing main body 1 in the present embodiment is installed wedge-type seal skin pearl 6 is provided with the groove coaxial with through hole 102 and cannelure 101; cannelure 101 is distributed in the outside of groove 102; by the design of groove 102 and cannelure 101; increased casing main body 1 face area; thereby increased the creepage distance of casing main body 1, protected the casing main body 1 of insulation not damaged.
As shown in Figure 2, on one end end face of casing main body 1 in the present embodiment away from wedge-type seal skin pearl 6, also offer oil groove 103, this oil groove 103 radially offering along casing main body 1, and through the through hole of casing main body 1, guaranteed inside pipe casing can exhaust, oil-feed, reach insulation effect better.
While installing due to sleeve pipe, do not need the too large power that loads, and in order to facilitate the installation and removal of sleeve pipe, as shown in Figure 3, upwards be distributed with in the week of threaded ring 3 for loading the jack 301 of instrument installation or removal sleeve pipe, particularly, this jack 301 evenly arranges 4, compares with the threaded ring 3 of the just polygon bodily form, convenient processing and manufacture, installing/dismounting is simple to operate.
Different from traditional porcelain bushing type bushing shell for transformer, casing main body 1 in the present embodiment and the material of threaded ring 3 are nylon, have that quality is light, mechanical strength is good, thermal endurance, insulating properties and the good feature of resistance to wear, overcome heavy, the frangible defect of porcelain bushing type bushing shell for transformer.Casing main body 1 and threaded ring 3 are made by nylon rod machining, adopt the manufacture of nylon rod machining, easily manufactured, and the feature with good toughness, oil resistant, antidetonation, and overcome the hygroscopic defect of nylon material self, processing dimension good stability is that the ideal of transformer oil tubing and casing is made material.In addition, the two ends of conducting rod 2 are connected wire by pad with nut respectively, and easy-to-connect is quick, and contact stabilization is reliable, and conducting rod 2 is a threaded straight-bar, has also reduced difficulty of processing.
Embodiment 2
The basic structure of a kind of oily tubing and casing for oil-filled transformer inside of the present embodiment is with embodiment 1, difference is: the casing main body 1 in the present embodiment and the material of threaded ring 3 are insulating composite material, have that quality is light, mechanical strength is good, thermal endurance, insulating properties and resistance to wear is good, physical dimension is little feature, overcome heavy, the frangible defect of porcelain bushing type bushing shell for transformer.Casing main body 1 and threaded ring 3 are made by insulating composite material bar machining, easily manufactured, and have the feature of good toughness, oil resistant, antidetonation.
As shown in Figure 1, a kind of oily tubing and casing for oil-filled transformer inside of above-described embodiment 1 and embodiment 2 during installation, is first offered the installing hole matching with casing main body 1 smaller-diameter portion size on the oil tank wall 4 of transformer inside; Then, wedge-type seal skin pearl 6 is enclosed within to the correct position of conducting rod 2 polished rod parts, in through hole by conducting rod 2 together with wedge-type seal skin pearl 6 threading main bodys 1, make the taper surface offered on the lozenges of wedge-type seal skin pearl 6 and casing main body 1 bonded to each other, and with pad and nut, conducting rod 2 is anchored on casing main body 1; Afterwards, sealing ring 5 is enclosed within the part that casing main body 1 diameter is less, and sealing ring 5 and the step surface of casing main body 1 are fitted, then the casing main body 1 that sealing ring 5 and conducting rod 2 are installed is passed to the installing hole of oil tank wall 4 from a side; Finally, threaded ring 3 is screwed in to casing main body 1 from opposite side, oil tank wall 4 is clipped between threaded ring 3 and sealing ring 5, and utilize the instrument that loads that threaded ring 3 and casing main body 1 are loaded; Utilize subsequently pad and the nut at conducting rod 2 two ends that two oil systems of transformer are carried out to wire connection, complete the installation of sleeve pipe.
A kind of oily tubing and casing for oil-filled transformer inside of the present utility model, not only simple in structure, easy installation and removal, and sealing and good insulating, long service life, while convenient processing and manufacture, with low cost, the oil-immersed and high-voltage transformer that is particularly useful for 35kV level, compare with existing porcelain bushing type bushing shell for transformer, adopted and be easy to the nylon of processing and manufacturing, light weight or insulating composite material as the making material of sleeve pipe, fill up the blank of this type of oily tubing and casing, enriched the kind of oily tubing and casing.
Below schematically the utility model and execution mode thereof are described, this description does not have restricted, and shown in accompanying drawing is also one of execution mode of the present utility model, and actual structure is not limited to this.So, if those of ordinary skill in the art is enlightened by it, in the situation that not departing from the utility model creation aim, without creatively designing the frame mode similar to this technical scheme and embodiment, all should belong to protection range of the present utility model.
Claims (9)
1. the oily tubing and casing for oil-filled transformer inside, comprise conducting rod (2), it is characterized in that: also comprise casing main body (1), threaded ring (3) and sealing ring (5), the through hole that described conducting rod (2) axially arranges through casing main body (1), and be provided with clearance sealing device between conducting rod (2) and casing main body (1); One end of described casing main body (1) is provided with external screw thread, and this external screw thread ends at a step surface, and it is upper that described sealing ring (5) is sheathed on casing main body (1), and fit with above-mentioned step surface; Described threaded ring (3) is connected by above-mentioned external screw thread with casing main body (1), and is the oil tank wall (4) of transformer inside between threaded ring (3) and sealing ring (5).
2. a kind of oily tubing and casing for oil-filled transformer inside according to claim 1, it is characterized in that: described clearance sealing device comprises the wedge-type seal skin pearl (6) being closely sheathed on conducting rod (2), pad and the nut that compresses this wedge-type seal skin pearl (6), through hole one end of described casing main body (1) is provided with taper surface, described wedge-type seal skin pearl (6) and this taper surface closely cooperate, described conducting rod (2) at the through hole two ends of casing main body (1) respectively by pad and fastening nuts.
3. a kind of oily tubing and casing for oil-filled transformer inside according to claim 2, it is characterized in that: one end end face that described casing main body (1) is installed wedge-type seal skin pearl (6) is provided with the groove coaxial with through hole (102) and cannelure (101), described cannelure (101) is distributed in the outside of groove (102), for increasing the creepage distance of casing main body (1).
4. a kind of oily tubing and casing for oil-filled transformer inside according to claim 3, is characterized in that: on one end end face of described casing main body (1) away from wedge-type seal skin pearl (6), offer oil groove (103).
5. a kind of oily tubing and casing for oil-filled transformer inside according to claim 4, is characterized in that: described oil groove (103) is radially offered along casing main body (1), and passes the through hole of casing main body (1).
6. a kind of oily tubing and casing for oil-filled transformer inside according to claim 5, is characterized in that: be upwards distributed with the jack (301) for loading instrument installation or removal sleeve pipe the week of described threaded ring (3).
7. according to a kind of oily tubing and casing for oil-filled transformer inside described in claim 1 to 6 any one, it is characterized in that: the material of described casing main body (1) and threaded ring (3) is nylon or insulating composite material.
8. a kind of oily tubing and casing for oil-filled transformer inside according to claim 7, is characterized in that: the two ends of described conducting rod (2) are connected wire by pad with nut respectively.
9. according to a kind of oily tubing and casing for oil-filled transformer inside described in claim 1 to 6 any one, it is characterized in that: described casing main body (1) and threaded ring (3) are made by nylon rod or insulating composite material bar machining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420179818.XU CN203839158U (en) | 2014-04-14 | 2014-04-14 | Oil-oil bushing used inside oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420179818.XU CN203839158U (en) | 2014-04-14 | 2014-04-14 | Oil-oil bushing used inside oil-immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203839158U true CN203839158U (en) | 2014-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420179818.XU Expired - Fee Related CN203839158U (en) | 2014-04-14 | 2014-04-14 | Oil-oil bushing used inside oil-immersed transformer |
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| Country | Link |
|---|---|
| CN (1) | CN203839158U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267053A (en) * | 2018-03-28 | 2018-07-10 | 中国地质大学（北京） | A kind of mechanical device that plasma shot rock is generated using electrohydraulic effect |
| CN109215983A (en) * | 2018-10-13 | 2019-01-15 | 国网湖北省电力有限公司随州供电公司 | A kind of improvement structure of oil-immersed transformer oil monitoring ejector |
| CN110736646A (en) * | 2019-10-16 | 2020-01-31 | 国网河北省电力有限公司 | Oil taking auxiliary device of main transformer tap switch |
-
2014
- 2014-04-14 CN CN201420179818.XU patent/CN203839158U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267053A (en) * | 2018-03-28 | 2018-07-10 | 中国地质大学（北京） | A kind of mechanical device that plasma shot rock is generated using electrohydraulic effect |
| CN108267053B (en) * | 2018-03-28 | 2024-05-24 | 北京市政路桥股份有限公司 | Mechanical device for producing plasma to blast rock by utilizing hydro-electric effect |
| CN109215983A (en) * | 2018-10-13 | 2019-01-15 | 国网湖北省电力有限公司随州供电公司 | A kind of improvement structure of oil-immersed transformer oil monitoring ejector |
| CN110736646A (en) * | 2019-10-16 | 2020-01-31 | 国网河北省电力有限公司 | Oil taking auxiliary device of main transformer tap switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20200414 |