CN202093930U - Underground combined transformer - Google Patents
Underground combined transformer Download PDFInfo
- Publication number
- CN202093930U CN202093930U CN2011201923010U CN201120192301U CN202093930U CN 202093930 U CN202093930 U CN 202093930U CN 2011201923010 U CN2011201923010 U CN 2011201923010U CN 201120192301 U CN201120192301 U CN 201120192301U CN 202093930 U CN202093930 U CN 202093930U
- Authority
- CN
- China
- Prior art keywords
- casing
- voltage
- box
- transformer
- tension fuse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Housings And Mounting Of Transformers (AREA)
Abstract
The utility model discloses an underground combined transformer. A box body (1) and a box cover (2) are both made of stainless steel and are welded together; a low-voltage wiring terminal (4), plug type high-voltage cable connectors (5), a tap switch (6), a high-voltage fuse (7) and a high-voltage load switch (8) are arranged on the box cover (2); the low-voltage wiring terminal (4) is covered in a low-voltage junction box (9); a water-proof cover (10) is arranged on the outer side of the tap switch (6); the high-voltage fuse (7) is covered in a high-voltage fuse box (11); and the high-voltage load switch (8), the low-voltage junction box (9), a flange and the high-voltage fuse box (11) are all made of stainless steel. In case of over-current and short-circuit failures, the high-voltage fuse can be automatically cut off to protect the transformer and the power grid at the same time, and the transformer provided by the utility model has the characteristics of safety and reliability, reasonable arrangement, convenience in operation, and the like.
Description
Technical field
The utility model relates to the transformer in the power equipment, is suitable for being installed in below ground.
Background technology
Traditional transformer is difficult to and environmental harmony on every side, many developed countries, according to the urban ecology design concept, progressively transformer is imbedded underground installation, underground transformer arises at the historic moment, especially the underground type combined transformer, its benefit is easy to go deep into load center, reduce radius of electricity supply, improve the terminal voltage quality, be specially adapted to urban network reconstruction.The underground type combined transformer has more and more important position in urban distribution network development, particularly big city view street and biotope that some are high-grade, and controller switching equipment is just becoming the inexorable trend of urban development with going into.Traditional transformer is usually by casing; compositions such as case lid and transformer body; annexes such as low pressure termination and high-voltage connection device are arranged on the case lid usually; and high pressure protector is generally used in the combined transformer; and be arranged on the wall box; be convenient to save cost and installation and design arrangement; but if be installed on the transformer of this kind structure in the melt pit basis with burying; because the melt pit basic space is limited; the operator should descend in the melt pit and just can observe and operate; be unfavorable for very much safeguarding and maintenance, correspondingly also can increase the complexity and the cost of melt pit foundation construction.In addition, the low pressure termination of traditional transformer, high-voltage connection device and high pressure protector do not have waterproof and corrosion resistant function, can't adapt to underground special running environment, and useful life is short, and has certain danger.
The utility model content
The underground type combined transformer that the purpose of this utility model provides a kind of safe and reliable, connection and reasonable arrangement, is convenient to operate, when overcurrent and short trouble appearred in the underground type transformer, the cutoff high fuse was protected simultaneously to transformer and electrical network automatically.
For solving above technical problem, the technical scheme that the utility model adopted is: a kind of underground type combined transformer, comprise casing (1), case lid (2) and be arranged on transformer body (3) in the casing (1), described casing (1) and case lid (2) all adopts stainless steel to make and both weld together, key is: described case lid (2) is provided with low-voltage wiring terminal (4), plug-in high-voltage cable joint (5), shunting switch (6), high-tension fuse (7) and high voltage load switch (8), described low-voltage wiring terminal (4) is housed in the low pressure terminal box (9), described shunting switch (6) arranged outside has bucker (10), described high-tension fuse (7) is housed in the high-tension fuse box (11), described high voltage load switch (8), low pressure terminal box (9), ring flange (10), high-tension fuse box (11) all adopts stainless steel to make.
During installation, case lid and casing reach complete sealing effectiveness by welding, low-voltage wiring terminal is installed in the low pressure terminal box, high-tension fuse is installed in the high-tension fuse box, the shunting switch arranged outside has bucker, the plug-in high-voltage cable joint also is installed on the case lid, and high voltage load switch, low pressure terminal box, shunting switch, high-tension fuse box all adopt stainless steel to make, and reaches the purpose of the hermetically sealed and anti-corrosion of waterproof.High voltage load switch is connected with high-tension fuse and is used, and is used to control the switching ability of power transformer electric energy.High voltage load switch can only certain load current and the overload electric current of break-make, but can not interrupting short circuit, so the use of connecting with high-tension fuse is usually carried out short-circuit protection by high-tension fuse.
Described low pressure terminal box (9) and high-tension fuse box (11) are rectangular box, and described high voltage load switch (8) is selected four position on-load switches for use.Low pressure terminal box and high-tension fuse box are designed to rectangular box, are convenient to processing and manufacturing.Four position on-load switches can place on-load switch A net, B net, looped network and disconnect four kinds of states; under the effect of action bars; can make switch under the transformer belt load condition, do three link passs, close power supply or change supply power mode, as control and protective device industrial, civilian electric energy.
The middle part of described casing (1) is welded with a circle reinforcement (12) along casing (1) outer wall, and it is that stainless steel is made that described reinforcement (12) adopts material, to increase casing intensity.
Described casing (1) is rectangular, casing (1) is provided with the stainless steel heating panel (13) with casing (1) parallel sidewalls all around, leave the gap between described heating panel (13) and casing (1) sidewall, the upper/lower terminal of described heating panel is welded on casing (1) sidewall by horizontal supporting plate (14) respectively, and the stainless steel heating panel can satisfy underground special installation environment.
The beneficial effects of the utility model:
(1) high-tension fuse and high voltage load switch are arranged on the case lid, are convenient to ground observation, easy to operate, reduce the difficulty of construction and the cost of melt pit;
(2) the transformer high-voltage protective device that constitutes of high-tension fuse and high voltage load switch externally or transformer when breaking down, can cut off rapidly, does not influence whole circuit, and transformer and electrical network are protected simultaneously;
(3) integral body has hermetically sealed, rust resistance, can be immersed in the water to move, and has satisfied the special mounting environment of underground type combined transformer, has improved the reliability of electric power system effectively, long service life.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the left view of Fig. 1.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
Underground type combined transformer shown in Fig. 1-3, casing 1 and case lid 2 all adopt anticorrosion corrosion resistant plate to make and weld together the formation all-sealed structure, to adapt to underground humidity, nonventilated environment.Transformer body 3 is arranged in the casing 1.Case lid 2 is provided with annexes such as low-voltage wiring terminal 4, plug-in high-voltage cable joint 5, shunting switch 6, high-tension fuse 7, high voltage load switch 8, pressure relief valve 15, oiling obturating plug 16, earth stud 17.
Four low-voltage wiring terminals 4 are housed in the low pressure terminal box 9 of sealing, and low pressure terminal box 9 can be selected o, a, b, the outlet of c phase for use, to satisfy user's diversity, reduce the low-voltage cable feeder pillar.Plug-in high-voltage cable joint 5 constitutes two loops, and all joints all have the encapsulation fitting protection, and it matches with high-tension cable.High pressure protector is made up of high-tension fuse and high voltage load switch, and three high-tension fuses 7 are housed in the high-tension fuse box 11.Shunting switch 6 arranged outside have bucker 10, and bucker 10 is installed on the case lid 2 by ring flange, guarantee shunting switch 6 not corrosions, rotate flexibly during pressure regulation.High voltage load switch 8, low pressure terminal box 9, ring flange 10, high-tension fuse box 11 all adopt stainless steel to make and have sealing, a water-proof function.
Low pressure terminal box 9 and high-tension fuse box 11 are preferably rectangular box, and high voltage load switch 8 is preferably selected four position on-load switches for use.
Shown in Fig. 1-2, the middle part of casing 1 also is welded with a circle reinforcement 12 along casing 1 outer wall, and it is that stainless-steel sheet is bent into that reinforcement 12 adopts material.Casing 1 is rectangular, be provided with stainless steel heating panel 13 around the casing 1 with casing 1 parallel sidewalls, totally ten groups of heating panels 13 leave the gap between heating panel 13 and casing 1 sidewall, and the upper/lower terminal of heating panel is welded on casing 1 sidewall by horizontal supporting plate 14 respectively.
As Fig. 2, be welded with four boatswain chairs 18 that become distributed rectangular on the case lid 2, be convenient to lift by crane transformer.
Claims (4)
1. underground type combined transformer, comprise casing (1), case lid (2) and be arranged on transformer body (3) in the casing (1), described casing (1) and case lid (2) all adopts stainless steel to make and both weld together, it is characterized in that: described case lid (2) is provided with low-voltage wiring terminal (4), plug-in high-voltage cable joint (5), shunting switch (6), high-tension fuse (7) and high voltage load switch (8), described low-voltage wiring terminal (4) is housed in the low pressure terminal box (9), described shunting switch (6) arranged outside has bucker (10), described high-tension fuse (7) is housed in the high-tension fuse box (11), described high voltage load switch (8), low pressure terminal box (9), ring flange (10), high-tension fuse box (11) all adopts stainless steel to make.
2. according to the described underground type combined transformer of claim 1, it is characterized in that: described low pressure terminal box (9) and high-tension fuse box (11) are rectangular box, and described high voltage load switch (8) is selected four position on-load switches for use.
3. according to the described underground type combined transformer of claim 1, it is characterized in that: the middle part of described casing (1) is welded with a circle reinforcement (12) along casing (1) outer wall, and it is that stainless-steel sheet is bent into that described reinforcement (12) adopts material.
4. according to claim 1 or 3 described underground type combined transformers, it is characterized in that: described casing (1) is rectangular, casing (1) is provided with the stainless steel heating panel (13) with casing (1) parallel sidewalls all around, leave the gap between described heating panel (13) and casing (1) sidewall, the upper/lower terminal of described heating panel is welded on casing (1) sidewall by horizontal supporting plate (14) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201923010U CN202093930U (en) | 2011-06-09 | 2011-06-09 | Underground combined transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201923010U CN202093930U (en) | 2011-06-09 | 2011-06-09 | Underground combined transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202093930U true CN202093930U (en) | 2011-12-28 |
Family
ID=45368981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201923010U Expired - Lifetime CN202093930U (en) | 2011-06-09 | 2011-06-09 | Underground combined transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202093930U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102779634A (en) * | 2012-08-14 | 2012-11-14 | 江西第二电力设备有限公司 | Fully-grounded lightning-proof, water-proof and dust-proof transformer |
| CN104092179A (en) * | 2014-06-03 | 2014-10-08 | 上海瑞奇电气设备股份有限公司 | Underground 10kV cable splitter |
-
2011
- 2011-06-09 CN CN2011201923010U patent/CN202093930U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102779634A (en) * | 2012-08-14 | 2012-11-14 | 江西第二电力设备有限公司 | Fully-grounded lightning-proof, water-proof and dust-proof transformer |
| CN104092179A (en) * | 2014-06-03 | 2014-10-08 | 上海瑞奇电气设备股份有限公司 | Underground 10kV cable splitter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202276085U (en) | Fully-insulated metal ring net cabinet | |
| CN103683225B (en) | Nuclear power station low-voltage distribution system full supply district earth-fault protection method | |
| CN202093930U (en) | Underground combined transformer | |
| CN204835331U (en) | Integration intelligence combination transformer substation | |
| CN104967036B (en) | Integrated intelligent combination transformer station | |
| CN203659733U (en) | Outdoor high-voltage demarcation vacuum circuit breaker | |
| CN204947341U (en) | Distribution becomes platform intelligent distribution box | |
| CN105575720A (en) | Outdoor high-voltage boundary vacuum circuit breaker | |
| CN207853450U (en) | A kind of transformer neutral point ground protection switch | |
| CN201238190Y (en) | Earth leakage circuit breaker for zero wire break | |
| CN201674150U (en) | Cordwood system intelligent ring network cabinet | |
| CN201846012U (en) | Switching device for 24KV alternating-current metal closed ring net | |
| CN204651712U (en) | The interim safety electric power distribution box in a kind of job site and consisting of controller switching equipment | |
| CN202093931U (en) | Underground type combined transformer box cover | |
| CN108599102A (en) | A kind of transformer neutral point ground protection switch | |
| CN209658725U (en) | A kind of prepackage type small size box type transformer substation | |
| CN209216872U (en) | A kind of transformer vacuum switch | |
| CN209119804U (en) | Electric furnace overvoltage energy absorption protective device | |
| CN207966715U (en) | A kind of combined transformer with multiple protective | |
| CN201616628U (en) | Distribution box for construction technology | |
| CN201928001U (en) | Open circuit protector of current transformer | |
| CN108074761B (en) | A kind of rain-proof type disconnecting switch protective device | |
| CN205862207U (en) | A kind of distribution delayed startup coupling box | |
| CN216794597U (en) | High-voltage power supply relay protection system of tower crane | |
| CN204905742U (en) | Middling pressure looped netowrk vacuum circuit breaker cabinet |
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: 20111228 |