CN204441049U - Gas-insulating type three dimensional wound core power transformer - Google Patents

Gas-insulating type three dimensional wound core power transformer Download PDF

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Publication number
CN204441049U
CN204441049U CN201520144099.2U CN201520144099U CN204441049U CN 204441049 U CN204441049 U CN 204441049U CN 201520144099 U CN201520144099 U CN 201520144099U CN 204441049 U CN204441049 U CN 204441049U
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low
core
double
iron core
voltage coil
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CN201520144099.2U
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张艳林
张巨星
曹剑飞
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HEBEI GAOJING ELECTRICAL EQUIPMENT CO Ltd
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HEBEI GAOJING ELECTRICAL EQUIPMENT CO Ltd
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Abstract

The utility model discloses a kind of gas-insulating type three dimensional wound core power transformer, relate to electrical equipment technical field.The utility model comprises iron core, high-voltage coil and low-voltage coil, high-low voltage leads, transformer case, bushing, low-tension bushing, described iron core comprises the identical rectangular core frame be made up of high magnetic conduction cold-reduced silicon sheet of three structures, two transverse frame edges of rectangular core frame are provided with cambered outwards radian, fit and use binding strap colligation to form stem together in the munnion limit of adjacent two rectangular core frames, the munnion limit colligation between two of three rectangular core frames is assemblied into stereo-triangular wound core structure, and the cross section of described iron core is segmented polygon; Also comprise double-deck hexagonal-shaped frame, for supporting and fixed iron core and high-voltage coil and low-voltage coil, bushing and low-tension bushing are arranged on transformer case.It is rational in infrastructure, good heat dissipation effect, unloaded load loss are few, lightweight, device health amasss little, and cost of manufacture is low, and noise is little.

Description

Gas-insulating type three dimensional wound core power transformer
Technical field
The utility model relates to electrical equipment technical field, especially a kind of gas-insulating type three dimensional wound core power transformer.
Background technology
Current domestic S13 type three dimensional wound core transformer partial is limited to the distribution transformer product of 10kV low capacity, and because capacity is little, electric pressure is low, and separate unit energy-saving effect is relatively less.High voltage large capcity power transformer product due to himself loss radix large, energy consumption decline space is considerable, and current gas-insulating type transformer core form all adopts laminated core, because dielectric is gas, its volume and noise larger.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of gas-insulating type three dimensional wound core power transformer, rational in infrastructure, good heat dissipation effect, unloaded load loss are few, lightweight, noise is little, and cost of manufacture is low.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of gas-insulating type three dimensional wound core power transformer, comprise iron core, high-voltage coil and low-voltage coil, high-low voltage leads, transformer case, bushing, low-tension bushing, described iron core comprises the identical rectangular core frame be made up of high magnetic conduction cold-reduced silicon sheet of three structures, two transverse frame edges of rectangular core frame are provided with cambered outwards radian, fit and use binding strap colligation to form stem together in the munnion limit of adjacent two rectangular core frames, the munnion limit colligation between two of three rectangular core frames is assemblied into stereo-triangular wound core structure, the cross section of described iron core is segmented polygon, also comprise double-deck hexagonal-shaped frame, for supporting and fixed iron core and high-voltage coil and low-voltage coil, described double-deck hexagonal-shaped frame comprises double-deck upper clamping piece and double-deck lower clamping piece, adopts connecting screw rod to connect between double-deck upper clamping piece and double-deck lower clamping piece, described double-deck hexagonal-shaped frame, iron core and the high-voltage coil and low-voltage coil be wound on iron core column are arranged in transformer case, also include on-load shunting switch, be fixed on on load tap changer support, on load tap changer is provided with some binding posts, for connecting with the lead-in wire of drawing from high-tension coil, bushing and low-tension bushing are arranged on transformer case, and in transformer case, vacuum fills SF insulating gas.
High-low voltage leads is laying triangular in shape in space.
The cross section of described transformer case is rectangle.
The beneficial effect adopting technique scheme to produce is: in transformer case of the present utility model, vacuum fills SF6 insulating gas, adopts three-dimensional circle core construction simultaneously, reduces noise, simplify transformer device structure.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the integral outer structural representation of transformer;
Fig. 3 is the structural representation of a side of Fig. 1;
Fig. 4 is structural representation unshakable in one's determination;
Fig. 5 is tank bottoms limit mounting position view;
In figure: 1, bushing; 2, transformer case; 3, double-deck upper clamping piece; 4, unshakable in one's determination; 5, high-voltage coil and low-voltage coil; 6, high-low voltage leads; 7, double-deck lower clamping piece; 8, low-tension bushing; 9, spacing bottom transformer case; 10, on load tap changer; 11, instrument transformer; 12,0 phase sleeve pipe; 14, gilled radiator and draught fan matching; 15, terminal box.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Larger in order to solve existing gas-insulated transformer noise, baroque problem, the utility model provides a kind of gas-insulating type three dimensional wound core power transformer as Figure 1-5, comprise unshakable in one's determination 4, high-voltage coil and low-voltage coil 5, high-low voltage leads 6, transformer case 2, bushing 1, low-tension bushing 8, it is characterized in that, described unshakable in one's determination 4 comprise the identical rectangular core frame be made up of high magnetic conduction cold-reduced silicon sheet of three structures, two transverse frame edges of rectangular core frame are provided with cambered outwards radian, fit and use binding strap colligation to form stem together in the munnion limit of adjacent two rectangular core frames, the munnion limit colligation between two of three rectangular core frames is assemblied into stereo-triangular wound core structure, the described cross section of unshakable in one's determination 4 is segmented polygon, also comprise double-deck hexagonal-shaped frame, for supporting and fixed iron core 4 and high-voltage coil and low-voltage coil 5, described double-deck hexagonal-shaped frame comprises double-deck upper clamping piece 3 and double-deck lower clamping piece 7, adopts connecting screw rod to connect between double-deck upper clamping piece 3 and double-deck lower clamping piece 7, described double-deck hexagonal-shaped frame, iron core 4 and the high-voltage coil and low-voltage coil 5 be wound on 4 stems unshakable in one's determination are arranged in transformer case 2, also include on-load shunting switch, be fixed on on load tap changer support, on load tap changer is provided with some binding posts, for connecting with the lead-in wire of drawing from high-tension coil, bushing 1 and low-tension bushing 8 are arranged on transformer case 2, and in transformer case 2, vacuum fills SF6 insulating gas, high-low voltage leads 6 is laying triangular in shape in space, the cross section of described transformer case 2 is rectangle.
The utility model transformer body adopts Integral double-deck hexagonal-shaped frame clamping structure, by drawing tie-rod between double-deck folder from top to bottom, double-deck folder from top to bottom is respectively equipped with pressing plate and supporting plate and folder and forms an entirety, be provided with spacing bottom double-deck lower clamping piece, by iron core and winding fully fixing, ensure that the stability of device body entirety and the intensity of lifting.High-voltage coil and low-voltage coil both sides are provided with split type backing plate, pressing plate, end circle, fix by drawing screw rod and the spacing round steel of folder.
The utility model assembling procedure is as follows:---iron core upset is installed, and------upset of device body---is installed web and---prepared---tank envelope making---vacuum gas filling-test that device body and tank envelope are assembled---organizing assembling parts---such as high pressure and low-voltage lead switch in coil coiling on iron core in making unshakable in one's determination (blanking unshakable in one's determination, rotary shearing, winding, annealing, assembled, japanning colligation).
Wherein, unshakable in one's determination adopt Three-dimensional triangle type rewinding material structure of remaining silent, stem is segmented polygon pattern, assembled by three iron core frames, and this kind of iron core shortens the distance between Double layer iron yoke, and core volume and weight reduce, therefore significantly can reduce no-load loss.
Every iron leg heart of each iron core frame is formed by winding equipment coiling piecemeal on heart mould.Three iron core frames carry out annealing in process through annealing furnace respectively, can thoroughly eliminate stress after annealing, and magnetic circuit all exists without high magnetic resistance everywhere, have given full play to the characteristic of high magnetic conduction cold-reduced silicon sheet, three-phase magnetic circuit full symmetric.Three iron core frames are assembled into one by binding strap colligation, composition Three-dimensional triangle iron-core.
In coil winding operation, utilize special spooling equipment to be fixed by iron core, winding utilizes gear grinding tool and the directly coiling on core limb of coiling steel cylinder.Winding bottom end face maintenance level is consistent to adopt reverse winding process to ensure.Because each winding is successively together around finger, the insulation between winding can closely cooperate into and be integrated, and makes the concentricity of winding completely the same, eliminates the packaging clearance between conventional transformer winding, substantially increases the ability of device body entirety opposing sudden short circuit.
Device body utilizes double-deck hexagon general frame structure, by iron core and winding fully fixing, ensure that the stability of device body entirety and the intensity of lifting.
High-low voltage leads adopt spatial triangle arrange, shorten lead pitch from, ensure that the balance of lead resistance.
Device body and shell adopt up and down totally 10 point locations, the arrangement triangular in shape of anchor point plane, and location is evenly reliable.
Utility model reduces the no-load loss of transformer core, and compared with current S11 type, unloaded consumption reduction reaches more than 30%, load loss reduces by more than 10%, no-load current reduces by more than 70%, noise reduces more than 10dB.Utilization rate of raw materials unshakable in one's determination improves 5-6%, and stock utilization, close to 100%, compared with similar-type products, decreases iron core weight and device health amasss, reduces material cost.

Claims (3)

1. a gas-insulating type three dimensional wound core power transformer, comprise iron core (4), high-voltage coil and low-voltage coil (5), high-low voltage leads (6), transformer case (2), bushing (1), low-tension bushing (8), it is characterized in that, described iron core (4) comprises the identical rectangular core frame be made up of high magnetic conduction cold-reduced silicon sheet of three structures, two transverse frame edges of rectangular core frame are provided with cambered outwards radian, fit and use binding strap colligation to form stem together in the munnion limit of adjacent two rectangular core frames, the munnion limit colligation between two of three rectangular core frames is assemblied into stereo-triangular wound core structure, the cross section of described iron core (4) is segmented polygon, also comprise double-deck hexagonal-shaped frame, for supporting and fixed iron core (4) and high-voltage coil and low-voltage coil (5), described double-deck hexagonal-shaped frame comprises double-deck upper clamping piece (3) and double-deck lower clamping piece (7), adopts connecting screw rod to connect between double-deck upper clamping piece (3) and double-deck lower clamping piece (7), described double-deck hexagonal-shaped frame, iron core (4) and the high-voltage coil and low-voltage coil (5) be wound on iron core (4) stem are arranged in transformer case (2), also include on-load shunting switch, be fixed on on load tap changer support, on load tap changer is provided with some binding posts, for connecting with the lead-in wire of drawing from high-tension coil, bushing (1) and low-tension bushing (8) are arranged on transformer case (2), and transformer case (2) interior vacuum fills SF6 insulating gas.
2. gas-insulating type three dimensional wound core power transformer according to claim 1, is characterized in that, high-low voltage leads (6) laying triangular in shape in space.
3. gas-insulating type three dimensional wound core power transformer according to claim 2, is characterized in that, the cross section of described transformer case (2) is rectangle.
CN201520144099.2U 2015-03-15 2015-03-15 Gas-insulating type three dimensional wound core power transformer Active CN204441049U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520144099.2U CN204441049U (en) 2015-03-15 2015-03-15 Gas-insulating type three dimensional wound core power transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520144099.2U CN204441049U (en) 2015-03-15 2015-03-15 Gas-insulating type three dimensional wound core power transformer

Publications (1)

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CN204441049U true CN204441049U (en) 2015-07-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105185523A (en) * 2015-09-18 2015-12-23 常熟市森源电气科技有限公司 Oil-immersed transformer of 20kV voltage class

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105185523A (en) * 2015-09-18 2015-12-23 常熟市森源电气科技有限公司 Oil-immersed transformer of 20kV voltage class

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