CN205016346U - Heavy current is from looks enclosed bus and main transformer connection structure - Google Patents
Heavy current is from looks enclosed bus and main transformer connection structure Download PDFInfo
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- CN205016346U CN205016346U CN201520782497.7U CN201520782497U CN205016346U CN 205016346 U CN205016346 U CN 205016346U CN 201520782497 U CN201520782497 U CN 201520782497U CN 205016346 U CN205016346 U CN 205016346U
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- main transformer
- isolated
- phase
- enclosed bus
- copper bar
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Abstract
The utility model discloses a heavy current is from looks enclosed bus and main transformer connection structure relates to power equipment technical field, solves current connection structure and when main transformer overhauls, need unpack two removable fractures and a gallows apart, overhauls the big problem of the volume of maintaining the engineering. The utility model provides a heavy current is from looks enclosed bus and main transformer connection structure is from looks enclosed bus conductor terminal from looks enclosed bus's bottom, and the low pressure sleeve pipe terminal at main transformer top is with continuous through interconnect's soft copper braid over braid and copper bar between looks enclosed bus conductor terminal. Through above -mentioned connection structure, only keep a fracture, the fracture length that has extended makes fracture length be greater than transformer travelling bogie height, only need remove a removable fracture when main transformer tears open out to need not unpack the gallows of fixed elbow apart, reduce maintenance maintenance work volume, can save the dismouting time.
Description
Technical field
The utility model relates to a kind of electrical equipment technical field, especially big current isolated-phase enclosed bus and main transformer syndeton.
Background technology
At present, for improving transformer shock resistance, main transformer is not with travelling bogie to install.In existing big current isolated-phase enclosed bus and main transformer syndeton, after ensureing isolated-phase enclosed bus installation, can be split out by transformer easily when main transformer overhauls, the layout design of isolated-phase enclosed bus should meet after interface removes, and main transformer can be with dolly to transport.
As shown in Figure 1, existing big current isolated-phase enclosed bus and main transformer syndeton are: isolated-phase enclosed bus 13 bends from top, then are connected with the low-tension bushing of transformer oil box top.Namely be exactly that the horizontal segment of isolated-phase enclosed bus 13 before bending downwards arranges a removable fracture 11, the conductor terminals of isolated-phase enclosed bus 13 is connected by fracture with between main transformer low-tension bushing terminal, the connecting length of soft copper braid over braid 15 is 300mm, and isolated-phase enclosed bus 13 bending place is fixed by suspension bracket 12.When needing maintenance, taken apart by the removable fracture 11 of horizontal segment, and taken apart by the fracture between the conductor terminals of isolated-phase enclosed bus 13 and main transformer low-tension bushing terminal, take suspension bracket 12 apart, then L shape isolated-phase enclosed bus section removed, main transformer is just extensible.Its shortcoming is to need to take two removable fractures and a suspension bracket apart, and repair and maintenance quantities is large.
Utility model content
The utility model provides a kind of big current isolated-phase enclosed bus and main transformer syndeton, solves existing syndeton when main transformer overhauls, and needs to take two removable fractures and a suspension bracket apart, the problem that repair and maintenance quantities is large.
The technical scheme in the invention for solving the above technical problem is: big current isolated-phase enclosed bus and main transformer syndeton, comprise phase-isolated closed bus conductor terminal, soft copper braid over braid, low-tension bushing terminal, copper bar, the bottom of isolated-phase enclosed bus is phase-isolated closed bus conductor terminal, and the low-tension bushing terminal at main transformer top is connected with copper bar by interconnective soft copper braid over braid with between phase-isolated closed bus conductor terminal.
Low-tension bushing terminal tip portions to the syndeton of the bottom of phase-isolated closed bus conductor terminal adds the length of this fracture, this fracture length is made to be greater than the little height of transformer transporting, this removable fracture only need be removed when main transformer splits out, and do not need the suspension bracket taking fixing elbow apart, can disassembly and assembly time be saved.
Particularly, phase-isolated closed bus conductor terminal is connected with copper bar by soft copper braid over braid, and copper bar is connected with low-tension bushing terminal again.
Further, the connecting length of described soft copper braid over braid is 300 ~ 320mm.
Further, the joint of described soft copper braid over braid and/or the joint of copper bar silver-plated.
Further, inside described copper bar, a support ring is also at least set.Particularly, described support ring is made up of copper or aluminium.
Further, also comprise shell, the shell incision position outside copper bar is provided with a dismountable rising seat, raises between seat and shell and passes through Flange joint.The length of rubber bellows can be shortened like this, reduce leakage field.Particularly, described rising seat is that aluminum raises seat.
Particularly, low-tension bushing terminal tip portions is 600mm to the distance of the bottom of phase-isolated closed bus conductor terminal, phase-isolated closed bus conductor terminal is connected with copper bar respectively by soft copper braid over braid, copper bar is connected with low-tension bushing terminal more respectively, wherein the length of copper bar is the lap of splice that 300mm adds, and the length of soft copper braid over braid is the lap of splice that 300mm adds two.
The beneficial effects of the utility model are: the first, decrease in existing big current isolated-phase enclosed bus and main transformer syndeton, and the removable fracture texture of the horizontal segment of isolated-phase enclosed bus before bending downwards, decreases a leakage field point simultaneously; The removable fracture of this horizontal segment can directly adopt normal bus section to be welded to connect.The second, during main transformer maintenance, only need take a removable fracture apart, and not need the suspension bracket taking fixing elbow apart, decrease repair and maintenance workload, save disassembly and assembly time.
Accompanying drawing explanation
Fig. 1 is existing big current isolated-phase enclosed bus and main transformer syndeton schematic diagram;
Fig. 2 is big current isolated-phase enclosed bus of the present utility model and main transformer syndeton schematic diagram;
Fig. 3 is A-A cross-sectional view in Fig. 2.
Parts, position and numbering in figure: removable fracture 11, suspension bracket 12, isolated-phase enclosed bus 13, phase-isolated closed bus conductor terminal 14, soft copper braid over braid 15, low-tension bushing terminal 16, copper bar 21, support ring 22, shell fracture 23, rising seat 24, flange 25.
Embodiment
Below in conjunction with accompanying drawing, the utility model structure is described further.
As shown in Figures 2 and 3, the utility model big current isolated-phase enclosed bus and main transformer syndeton, comprise phase-isolated closed bus conductor terminal 14, soft copper braid over braid 15, low-tension bushing terminal 16, copper bar 21, the bottom of isolated-phase enclosed bus 13 is phase-isolated closed bus conductor terminal 14, and the low-tension bushing terminal 16 at main transformer top is connected with copper bar 21 by interconnective soft copper braid over braid 15 with between phase-isolated closed bus conductor terminal 14.Such as, phase-isolated closed bus conductor terminal 14 is connected with copper bar 21 by soft copper braid over braid 15, and copper bar 21 is connected with low-tension bushing terminal 16 again.For ensureing safety, consider electric power suffered by short-circuit conditions lower conductor, the connecting length of soft copper braid over braid 15 is 300 ~ 320mm, and the connecting length as Fig. 2 soft copper braid over braid 15 is 300mm, all the other are connected by copper bar 21, all silver-plated process in the joint of soft copper braid over braid 15 and the joint of copper bar 21.According to the little height of existing transformer transporting, the distance of low-tension bushing terminal 16 top to the bottom of phase-isolated closed bus conductor terminal 14 is not less than 304mm.
Owing to adding fracture length, can ensure that fracture length is greater than the little height of transformer transporting, so only need dismounting removable fracture when main transformer splits out, and do not need the suspension bracket 12 taking fixing elbow apart, just transformer transporting dolly can be pushed, can disassembly and assembly time be saved.
According to short-circuit electromotive force result of calculation, also inside copper bar 21, also can at least arrange a support ring 22 on demand, support ring 22 is made up of copper or aluminium.Be provided with shell outside main transformer syndeton, shell fracture 23 place outside copper bar 21 is provided with a dismountable rising seat 24, raises seat 24 and is connected by flange 25 with between shell, to shorten the length of rubber bellows, reduces leakage field.Particularly, raise seat 24 and make rising seat for aluminium.
The distance of low-tension bushing terminal 16 top to the bottom of phase-isolated closed bus conductor terminal 14 is not less than the height of transformer transporting dolly.The height of setting transformer transporting dolly is 580mm, consider that 20mm's is reserved, the distance of low-tension bushing terminal 16 top to the bottom of phase-isolated closed bus conductor terminal 14 gets 600mm, phase-isolated closed bus conductor terminal 14 is connected with copper bar 21 respectively by soft copper braid over braid 15, copper bar 21 is connected with low-tension bushing terminal 16 more respectively, wherein half length uses copper bar 21 to connect, residue half soft copper braid over braid 15 connects, namely be the length of copper bar 21 be the lap of splice that 300mm adds, the length of soft copper braid over braid 15 is the lap of splice that 300mm adds two.
Big current isolated-phase enclosed bus and main transformer syndeton decrease the removable fracture texture of the horizontal segment of existing isolated-phase enclosed bus 13 before downward bending, decrease a leakage field point; When main transformer overhauls, only need take a removable fracture apart, and not need the suspension bracket 12 taking fixing elbow apart, decrease repair and maintenance workload, can disassembly and assembly time be saved.
Claims (9)
1. big current isolated-phase enclosed bus and main transformer syndeton, it is characterized in that: comprise phase-isolated closed bus conductor terminal (14), soft copper braid over braid (15), low-tension bushing terminal (16), copper bar (21), the bottom of isolated-phase enclosed bus is phase-isolated closed bus conductor terminal (14), and the low-tension bushing terminal (16) at main transformer top is connected with copper bar (21) by interconnective soft copper braid over braid (15) with between phase-isolated closed bus conductor terminal (14).
2. big current isolated-phase enclosed bus as claimed in claim 1 and main transformer syndeton, it is characterized in that: described phase-isolated closed bus conductor terminal (14) is connected with copper bar (21) by soft copper braid over braid (15), and copper bar (21) is connected with low-tension bushing terminal (16) again.
3. big current isolated-phase enclosed bus as claimed in claim 1 and main transformer syndeton, is characterized in that: the connecting length of described soft copper braid over braid (15) is 300 ~ 320mm.
4. big current isolated-phase enclosed bus as claimed in claim 1 and main transformer syndeton, is characterized in that: the joint of described soft copper braid over braid (15) and/or the joint of copper bar (21) silver-plated.
5. big current isolated-phase enclosed bus as claimed in claim 1 and main transformer syndeton, is characterized in that: described copper bar (21) inner side also at least arranges a support ring (22).
6. big current isolated-phase enclosed bus as claimed in claim 5 and main transformer syndeton, is characterized in that: described support ring (22) is made up of copper or aluminium.
7. big current isolated-phase enclosed bus as claimed in claim 1 and main transformer syndeton, it is characterized in that: also comprise shell, shell fracture (23) place in copper bar (21) outside is provided with a dismountable rising seat (24), raises seat (24) and is connected by flange (25) with between shell.
8. big current isolated-phase enclosed bus as claimed in claim 7 and main transformer syndeton, is characterized in that: described rising seat (24) is made of aluminum.
9. big current isolated-phase enclosed bus as claimed in claim 1 and main transformer syndeton, it is characterized in that: the distance of described low-tension bushing terminal (16) top to the bottom of phase-isolated closed bus conductor terminal (14) is 600mm, phase-isolated closed bus conductor terminal (14) is connected with copper bar (21) respectively by soft copper braid over braid (15), copper bar (21) is connected with low-tension bushing terminal (16) more respectively, wherein the length of copper bar (21) is that 300mm adds a lap of splice, the length of soft copper braid over braid (15) is that 300mm adds two lap of splice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520782497.7U CN205016346U (en) | 2015-10-10 | 2015-10-10 | Heavy current is from looks enclosed bus and main transformer connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520782497.7U CN205016346U (en) | 2015-10-10 | 2015-10-10 | Heavy current is from looks enclosed bus and main transformer connection structure |
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| Publication Number | Publication Date |
|---|---|
| CN205016346U true CN205016346U (en) | 2016-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520782497.7U Active CN205016346U (en) | 2015-10-10 | 2015-10-10 | Heavy current is from looks enclosed bus and main transformer connection structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025968A (en) * | 2016-07-20 | 2016-10-12 | 国家电网公司 | Detachable fracture device for enclosure type isolated-phase bus |
| CN113284716A (en) * | 2020-02-20 | 2021-08-20 | 中国电建集团华东勘测设计研究院有限公司 | Connecting structure of enclosed bus and transformer and sleeve disassembling method |
| CN114725862A (en) * | 2022-05-06 | 2022-07-08 | 江苏大全封闭母线有限公司 | Fixing tool for flexible connection of phase isolated bus |
-
2015
- 2015-10-10 CN CN201520782497.7U patent/CN205016346U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025968A (en) * | 2016-07-20 | 2016-10-12 | 国家电网公司 | Detachable fracture device for enclosure type isolated-phase bus |
| CN113284716A (en) * | 2020-02-20 | 2021-08-20 | 中国电建集团华东勘测设计研究院有限公司 | Connecting structure of enclosed bus and transformer and sleeve disassembling method |
| CN113284716B (en) * | 2020-02-20 | 2022-03-15 | 中国电建集团华东勘测设计研究院有限公司 | Connecting structure of enclosed bus and transformer and sleeve disassembling method |
| CN114725862A (en) * | 2022-05-06 | 2022-07-08 | 江苏大全封闭母线有限公司 | Fixing tool for flexible connection of phase isolated bus |
| CN114725862B (en) * | 2022-05-06 | 2024-05-14 | 大全集团有限公司 | Fixing tool for soft connection of phase separation bus |
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| C14 | Grant of patent or utility model | ||
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