CN201741561U - Power transformer with shell type structure - Google Patents

Power transformer with shell type structure Download PDF

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Publication number
CN201741561U
CN201741561U CN2010202869199U CN201020286919U CN201741561U CN 201741561 U CN201741561 U CN 201741561U CN 2010202869199 U CN2010202869199 U CN 2010202869199U CN 201020286919 U CN201020286919 U CN 201020286919U CN 201741561 U CN201741561 U CN 201741561U
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CN
China
Prior art keywords
pressure winding
high pressure
low pressure
iron core
power transformer
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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 - Fee Related
Application number
CN2010202869199U
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Chinese (zh)
Inventor
路明甫
周丽
罗志刚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SICHUAN JINCHENGMING ELECTRIC CO Ltd
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SICHUAN JINCHENGMING ELECTRIC CO Ltd
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Priority to CN2010202869199U priority Critical patent/CN201741561U/en
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Publication of CN201741561U publication Critical patent/CN201741561U/en
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Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a power transformer with shell type structure. A core of the power transformer is of a regular rectangular structure, and windings are of regular rectangular structures and are respectively arranged on three rectangular core legs. The sheet widths of the three-phase core legs are maximum sheet widths, consequently, the effective cross section of the core is enlarged, the magnetic flux density of operation is decreased, and the number of the turns of the winding is reduced. The weight of the core of the power transformer is reduced, the magnetic flux density of operation is decreased, consequently, the no-load loss and the no-load current are greatly reduced, the resistance and stray loss of the winding are greatly reduced, the load loss of the power transformer is greatly reduced, the anti-short-circuiting and overload-bearing capability is greatly enhanced, and meanwhile, the grid impact-bearing capability is enhanced.

Description

Shell-type structure power transformer
Technical field
The utility model relates to electrical equipment manufacturing technology field, is specifically related to the shell-type structure power transformer of a kind of 35kV of being applicable to and 110kV electric pressure.
Background technology
Current, it is a lot of in the electrical network voltage to be changed the specifications and models of (that is: power transformation or distribution) employed three-phase power transformer, but structure all is to adopt traditional core formula structure.The three-phase power transformer of 35kV electric pressure is pull bar core formula structure, the three-phase power transformer of 110kV electric pressure is and draws the Plate element structure, be that iron core adopts three-phase three-limb, after iron core is repeatedly long-pending three iron core column are arranged, on the tri-phase iron core post, be set with a winding, thereby constitute A, B, the C three-phase of transformer.Adopt upper and lower yoke clip piece and pull bar or arm-tie (the 35kV electric pressure adopts pull bar, and the 110kV electric pressure adopts arm-tie) with iron core locking then, thereby make iron core, winding, folder etc. form an integral body, constitute the power transformer of core formula structure.
The power transformer of traditional core formula structure has been made huge contribution for the economy and the social development of country, still, along with further developing of nation-building, the numerous power transformer of usage quantity has been proposed strict more requirement.At first, along with continuing to increase of building, comparatively nervous situation appears in the supply of " electric power " this energy inevitably, this performance boost to power transformer is had higher requirement, have only the zero load and the load loss that further reduce power transformer, could cut down the consumption of energy effectively, improve the efficient of electricity consumption.Secondly, the increasing of nation-building needs the electrical network of huge safe operation as powerful support, and the power transformer in electrical network must further improve Short Circuit withstand and impact resistance, could guarantee the safe and stable operation of huge electrical network.In these areas, the potentiality of conventional core formula structure power transformer have been excavated, and press for and develop a kind of new structure of breaking through conventional transformer structure fully, to realize the further lifting of power transformer performance.
The utility model content
Technical problem to be solved in the utility model is: how a kind of shell-type structure power transformer is provided, this shell-type structure power transformer can reduce the no-load loss and the load loss of power transformer significantly, simultaneously can promote power transformer Short Circuit withstand and impact resistance significantly, thereby can guarantee power network safety operation, reduce grid loss, improve the service efficiency of electric power energy.
To achieve the above object of the invention, the technical scheme that the utility model adopted is: a kind of shell-type structure power transformer is provided, comprises iron core, low pressure winding, high pressure winding, loaded tap-off shifting switch, fuel tank, radiator, oil storage pillow, oil filter, protection device and fuel outlet valve; Described iron core, low pressure winding and high pressure winding all are arranged in the fuel tank; Described fuel tank is provided with loaded tap-off shifting switch, radiator, oil storage pillow, oil filter, protection device and fuel outlet valve; It is characterized in that: the rectangular structure of described iron core for forming by A phase iron core column, B phase iron core column, C phase iron core column, middle iron yoke, long iron yoke and other iron yoke; Described low pressure winding and high pressure winding are rectangular configuration; Described high pressure winding is press-fited by high-voltage line cake integral level splicing and forms, and is connected by high pressure winding wire cake connecting line between the high-voltage line cake; Described low pressure winding is formed by the coiling of low pressure winding anaerobic copper bar, is added with low-voltage insulation between low pressure winding anaerobic copper bar; Leave the main empty path insulation between described low pressure winding and the high pressure winding; Three groups of described low pressure windings and high pressure winding are socketed in A respectively, and iron core column, B phase iron core column and C are enclosed in long iron yoke and the other iron yoke mutually on the iron core column simultaneously mutually; Described low pressure winding is provided with and is used for the low pressure outlet connecting hose that is connected with the low pressure outlet terminal, and described high pressure winding is provided with high pressure winding lead-out wire, and high pressure winding lead-out wire is connected with the high pressure input terminal via high pressure inlet wire lead-in wire; Corresponding each gear of described loaded tap-off shifting switch is connected with high pressure winding wire cake connecting line by tap lead respectively.
According to shell-type structure power transformer provided by the utility model, it is characterized in that: between the described high-voltage line cake high pressure winding oil duct and High-Voltage Insulation are housed.
In sum, shell-type structure power transformer provided by the utility model has been compared following advantage with conventional core formula structure power transformer:
1, reduce the loss level of transformer significantly, improve the utilance of electric power resource, saved the energy, what is more important provides a new energy saving and consumption reduction method for the development of whole transformer technology;
2, increase considerably the transformer anti-short circuit capability, increase considerably the transformer capability of overload;
3, increased the transformer impact resistance;
4, strengthened the safety of transformer, the stable operation ability;
5, dwindle volume of transformer, reduced transformer weight, had good cost performance.
Description of drawings
Fig. 1 is the vertical view of the repeatedly long-pending figure of shell-type structure electrical transformer cores provided by the utility model;
Fig. 2 is the front view of shell-type structure power transformer low pressure winding provided by the utility model;
Fig. 3 is the front view of shell-type structure power transformer high pressure winding;
Fig. 4 is the vertical view of shell-type structure power transformer high pressure winding;
Fig. 5 is the internal structure schematic diagram of shell-type structure power transformer;
Fig. 6 is the overall structure schematic diagram of shell-type structure power transformer.
Wherein, 1, A phase iron core column; 2, B phase iron core column; 3, C phase iron core column; 4, middle iron yoke; 5, long iron yoke; 6, other iron yoke; 7, low pressure outlet connecting hose; 8, low pressure winding anaerobic copper bar; 9, low-voltage insulation; 10, high pressure winding lead-out wire; 11, High-Voltage Insulation; 13, high pressure winding insulation supporting pad; 14, high pressure winding wire cake; 15, high pressure winding oil duct; 16, high pressure winding tap lead is lifted one's head; 17, high pressure winding wire cake connecting line; 18, loaded tap-off shifting switch; 19, tap lead; 20, iron core; 21, high pressure input terminal; 22, fuel tank; 23, high pressure inlet wire lead-in wire; 24, high pressure winding; 25, low pressure winding; 26, radiator; 27, low pressure outlet terminal; 28, oil storage pillow; 29, protection device; 30, oil filter; 31, fuel outlet valve.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described:
As shown in the figure, this shell-type structure power transformer comprises iron core 20, low pressure winding 25, high pressure winding 24, loaded tap-off shifting switch 18, fuel tank 22, radiator 26, oil storage pillow 28, oil filter 30, protection device 29 and fuel outlet valve 31; Described iron core 20, low pressure winding 25 and high pressure winding 24 all are arranged in the fuel tank 22; Described fuel tank 22 is provided with loaded tap-off shifting switch 18, radiator 26, oil storage pillow 28, oil filter 30, protection device 29 and fuel outlet valve 31; It is characterized in that: the rectangular structure of described iron core 20 for forming by A phase iron core column 1, B phase iron core column 2, C phase iron core column 3, middle iron yoke 4, long iron yoke 5 and other iron yoke 6; Described low pressure winding 25 and high pressure winding 24 are rectangular configuration; Described high pressure winding 24 is press-fited by high-voltage line cake 14 integral levels splicings and forms, and is connected by high pressure winding wire cake connecting line 17 between the high-voltage line cake 14; Described low pressure winding 25 is formed by 8 coilings of low pressure winding anaerobic copper bar, and 8 of low pressure winding anaerobic copper bars are added with low-voltage insulation 9; Leave the main empty path insulation between described low pressure winding 25 and the high pressure winding 24; Three groups of described low pressure windings 25 and high pressure winding 24 are socketed in A respectively, and iron core column 1, B phase iron core column 2 and C are enclosed in long iron yoke 5 and the other iron yoke 6 mutually on the iron core column 3 simultaneously mutually; Described low pressure winding 25 is provided with and is used for the low pressure outlet connecting hose 7 that is connected with low pressure outlet terminal 27, described high pressure winding 24 is provided with high pressure winding lead-out wire 10, and high pressure winding lead-out wire 10 is connected with high pressure input terminal 21 via high pressure inlet wire lead-in wire 23; Corresponding each gear of described loaded tap-off shifting switch 18 is connected with high pressure winding wire cake connecting line 17 by tap lead 19 respectively.
High pressure winding oil duct 15 and High-Voltage Insulation 11 are housed between the above-mentioned high-voltage line cake 14.
During production, at first, high pressure winding 24 and low pressure winding 25 are carried out the integral level splicing to press-fit, between the high-voltage line cake 14 of high pressure winding, pack into high pressure winding oil duct 15 and High-Voltage Insulation 11, add low-voltage insulation 98 of low pressure winding anaerobic copper bars simultaneously, between high pressure winding 24 and low pressure winding 25, stay the main empty path insulation.Integral assembling goes out three windings like this, is respectively A, B, C three-phase.Then three phase windings are arranged point-blank in order, the endoporus of regulating three phase windings is on a line, A, B, the C tri-phase iron core post sheet of having sheared passed winding endoporus that high-low voltage whole press-fits change long-pendingly, middle iron yoke 4, long iron yoke 5, other iron yoke 6 etc. also cooperate repeatedly simultaneously and amass.After finally repeatedly long-pending the finishing, iron core 20 forms shape shown in Figure 1, and high pressure winding 24 and low pressure winding 25 just have been enclosed in the iron core 20 after iron core changes long-pending finishing simultaneously.Like this, also corresponding the playing a very good protection of 20 pairs of windings of iron core, simultaneously, because the device body integral body that forms is rectangular shape, each several part is stressed to be evenly distributed, and makes the utility model overall mechanical strength higher.
Then, low pressure outlet connecting hose 7 is connected with low pressure outlet terminal 27, the high pressure winding lead-out wire 10 of each phase of high pressure winding is connected with high pressure inlet wire lead-in wire, draw from the high pressure input terminal again.Tap lead 19 is connected to loaded tap-off shifting switch 18 corresponding each gear, and high pressure winding wire cake connecting line 17 is connected.To be electrically connected at last finish after, the dry qualified device body integral body fuel tank 22 of packing into, vacuum is injected transformer oil, has just constituted shell-type structure power transformer provided by the utility model.
But; the above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection range of the utility model claim.

Claims (2)

1. a shell-type structure power transformer comprises iron core (20), low pressure winding (25), high pressure winding (24), loaded tap-off shifting switch (18), fuel tank (22), radiator (26), oil storage pillow (28), oil filter (30), protection device (29) and fuel outlet valve (31); Described iron core (20), low pressure winding (25) and high pressure winding (24) all are arranged in the fuel tank (22); Described fuel tank (22) is provided with loaded tap-off shifting switch (18), radiator (26), oil storage pillow (28), oil filter (30), protection device (29) and fuel outlet valve (31); It is characterized in that: the rectangular structure of described iron core (20) for forming by A phase iron core column (1), B phase iron core column (2), C phase iron core column (3), middle iron yoke (4), long iron yoke (5) and other iron yoke (6); Described low pressure winding (25) and high pressure winding (24) are rectangular configuration; Described high pressure winding (24) is press-fited by high-voltage line cake (14) integral level splicing and forms, and is connected by high pressure winding wire cake connecting line (17) between the high-voltage line cake (14); Described low pressure winding (25) is formed by low pressure winding anaerobic copper bar (8) coiling, is added with low-voltage insulation (9) between low pressure winding anaerobic copper bar (8); Leave the main empty path insulation between described low pressure winding (25) and the high pressure winding (24); Three groups of described low pressure windings (25) and high pressure winding (24) are socketed in A respectively, and iron core column (1), B phase iron core column (2) and C are enclosed in long iron yoke (5) and the other iron yoke (6) mutually on the iron core column (3) simultaneously mutually; Described low pressure winding (25) is provided with and is used for the low pressure outlet connecting hose (7) that is connected with low pressure outlet terminal (27), described high pressure winding (24) is provided with high pressure winding lead-out wire (10), and high pressure winding lead-out wire (10) is connected with high pressure input terminal (21) via high pressure inlet wire lead-in wire (23); Corresponding each gear of described loaded tap-off shifting switch (18) is connected with high pressure winding wire cake connecting line (17) by tap lead (19) respectively.
2. shell-type structure power transformer according to claim 1 is characterized in that: high pressure winding oil duct (15) and High-Voltage Insulation (11) are housed between the described high-voltage line cake (14).
CN2010202869199U 2010-08-10 2010-08-10 Power transformer with shell type structure Expired - Fee Related CN201741561U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010202869199U CN201741561U (en) 2010-08-10 2010-08-10 Power transformer with shell type structure

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Application Number Priority Date Filing Date Title
CN2010202869199U CN201741561U (en) 2010-08-10 2010-08-10 Power transformer with shell type structure

Publications (1)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102360731A (en) * 2011-10-18 2012-02-22 江苏达胜加速器制造有限公司 Double-pie solenoid high-frequency transformer
CN102982975A (en) * 2012-12-04 2013-03-20 江苏亚威变压器有限公司 Low-consumption loss transformer
CN111834089A (en) * 2020-07-09 2020-10-27 河北科博锐程电力工程有限公司 Three-phase transformer based on stress protection structure
CN113161110A (en) * 2021-03-25 2021-07-23 贵州电网有限责任公司 Combined capacity-changeable novel transformer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102360731A (en) * 2011-10-18 2012-02-22 江苏达胜加速器制造有限公司 Double-pie solenoid high-frequency transformer
CN102360731B (en) * 2011-10-18 2012-11-28 江苏达胜加速器制造有限公司 Double-pie solenoid high-frequency transformer
CN102982975A (en) * 2012-12-04 2013-03-20 江苏亚威变压器有限公司 Low-consumption loss transformer
CN111834089A (en) * 2020-07-09 2020-10-27 河北科博锐程电力工程有限公司 Three-phase transformer based on stress protection structure
CN113161110A (en) * 2021-03-25 2021-07-23 贵州电网有限责任公司 Combined capacity-changeable novel transformer
CN113161110B (en) * 2021-03-25 2024-05-10 贵州电网有限责任公司 Combined transformer with changeable capacity

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110209

Termination date: 20160810

CF01 Termination of patent right due to non-payment of annual fee