CN214797027U

CN214797027U - Grouping winding type dry-type transformer

Info

Publication number: CN214797027U
Application number: CN202121110590.5U
Authority: CN
Inventors: 刘仰贺
Original assignee: Shandong Huake Electric Co ltd
Current assignee: Shandong Huake Electric Co ltd
Priority date: 2021-10-13
Filing date: 2021-10-13
Publication date: 2021-11-19
Anticipated expiration: 2031-10-13

Abstract

The utility model belongs to the technical field of dry-type transformers, and discloses a grouped winding type dry-type transformer, which comprises three winding assemblies, wherein each winding assembly comprises a shell, an iron core and a carbon fiber coil framework, the top and the bottom of the iron core are respectively inserted with two iron yokes, two side walls of the upper iron yoke are respectively provided with a clamping piece, and the side wall of one clamping piece is equidistantly provided with three high-voltage terminals, the utility model discloses a plurality of ring grooves are equidistantly arranged on the outer walls of the iron core and the carbon fiber coil framework, a positioning piece is respectively embedded in each ring groove, each positioning piece is provided with two positioning seats, an arc-shaped block is arranged on the L-shaped seat of each positioning seat in a sliding way, when a coil is wound, the coil can be clamped on the L-shaped seat, thereby the coil is positioned and clamped, the coil is ensured to be orderly wound, and the loosening of the subsequent coil is avoided, the stability of the function of the transformer is ensured.

Description

Grouping winding type dry-type transformer

Technical Field

The utility model belongs to the technical field of dry-type transformer, concretely relates to grouping wire-wound formula dry-type transformer.

Background

A transformer is a device that converts an alternating voltage and current of a certain level into another level of voltage and current of the same frequency according to the principle of electromagnetic induction. The transformer is capable of transforming ac voltage, exchanging ac, transforming impedance, and power transfer. The dry type transformer refers to a transformer in which an iron core and a winding are not immersed in insulating oil, and the dry type transformer has a single phase, two phases and three phases, and is wound in groups, i.e., more than two phases.

The coil of present dry-type transformer directly twines on iron core and the high-voltage coil skeleton, does not fix a position the coil, and the coil is in disorder easily when the winding, and easily becomes flexible after the winding finishes, then can lead to the holistic winding of coil unstable, influences the normal work of transformer, and in addition, dry-type transformer's gas permeability is relatively poor, and the effect of fan cooling is poor, and the unable fine effluvium of heat of coil then can lead to the function and the life of coil to receive the influence for a long time.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a grouping wound-rotor type dry-type transformer to it is unstable not hard up to solve current dry-type transformer coil winding, the relatively poor problem of radiating effect of transformer.

In order to achieve the above object, the utility model provides a following technical scheme: a grouping winding type dry-type transformer comprises three winding assemblies, each winding assembly comprises a shell, an iron core and a carbon fiber coil framework, the tops and the bottoms of the three iron cores are respectively inserted with two iron yokes, clamping pieces are respectively arranged on two side walls of the iron yokes above the iron yokes, three high-voltage terminals are arranged on the side wall of one clamping piece at equal intervals, a low-voltage outgoing line copper bar is arranged at the top of the other clamping piece, each carbon fiber coil framework is a hollow cylinder and sleeved outside one iron core, the carbon fiber coil frameworks and the iron cores are both positioned inside the shell, coils are wound on each carbon fiber coil framework and the iron cores, positioning pieces are arranged on the outer walls of each carbon fiber coil framework and the iron cores at equal intervals, each positioning piece comprises two symmetrically arranged positioning seats, and each positioning seat comprises an L-shaped seat, and the coil passes through L type seat winding on carbon fiber coil skeleton and iron core, every all slide on the perpendicular limit lateral wall of L type seat and be provided with the arc piece.

Preferably, every all from top to bottom the equidistance has been seted up on carbon fiber coil skeleton's the lateral wall and has been led to the groove, leads to the groove and divide into two, and two lead to the groove symmetry setting, every eight exhaust holes have all been seted up on the top outer wall of casing, and every four exhaust holes are a set of, and two sets of exhaust hole symmetries set up, every the exhaust hole all inclines to set up downwards.

Preferably, three be provided with the base around the below of subassembly, and the yoke of below is fixed in on the base, three fan is installed side by side at the top of base, and the air outlet of every fan all is located the bottom of a casing, every six ventilative grooves have all been seted up in the array in the bottom of casing.

Preferably, every the spout has all been seted up on the perpendicular limit lateral wall of L type seat, every the one end of arc piece is hemispherical, and the other end is the plane, every the plane end of arc piece all slides and sets up in a spout to be connected with the spring with the deepest of spout.

Preferably, every the ring channel has all been seted up from top to bottom the equidistance on the outer wall of iron core and carbon fiber coil skeleton, every the setting element all includes first semi-ring and second semi-ring, and two semi-rings of every setting element all inlay and locate in a ring channel.

Preferably, an annular clamping seat is fixed at the bottom of the inner side of each shell, an annular mounting groove is formed in the top of each clamping seat, and the bottom end of each carbon fiber coil framework is matched with one mounting groove.

Compared with the prior art, the utility model, following beneficial effect has:

(1) the utility model discloses a plurality of ring channel is seted up to the equidistance on the outer wall of iron core and carbon fiber coil skeleton to all inlay in every ring channel and establish the setting element, all set up two positioning seats on every setting element, slide on the L type seat of positioning seat and be provided with the arc piece, during the winding coil, can be with on the L type seat of coil chucking, thereby play the effect of location chucking to the coil, guaranteed the coil and twined in order, avoid follow-up coil to take place not hard up, guaranteed the stability of transformer function.

(2) The utility model discloses a from top to bottom the equidistance set up a plurality of logical grooves on carbon fiber coil skeleton, and the symmetry sets up two sets of exhaust holes on the lateral wall of casing, and every exhaust hole all inclines to set up downwards, inside avoiding the dust to get into the casing from the exhaust hole, the gas permeability of transformer has been improved, the fan blows in to two air flues, the outside air flue of wind flow of interior air flue, and flow from the exhaust hole, carbon fiber coil skeleton has high thermal conductivity, the setting element also adopts carbon fiber material simultaneously, can make the fan dispel the heat fast, the security and the life of transformer have been ensured.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the winding assembly of the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 is a schematic view of the positioning member according to the present invention;

fig. 5 is a schematic structural view of the carbon fiber coil bobbin of the present invention;

fig. 6 is a cross-sectional view of the housing of the present invention;

in the figure: 1. a base; 2. a winding assembly; 3. a clamp; 4. an iron yoke; 5. a low-voltage outlet copper bar; 6. a high voltage terminal; 7. a fan; 8. a housing; 9. an iron core; 10. a carbon fiber coil skeleton; 11. an exhaust hole; 12. a ventilation groove; 13. a card holder; 14. an L-shaped seat; 15. a chute; 16. an arc-shaped block; 17. positioning seats; 18. a first half ring; 19. a second half ring; 20. a positioning member; 21. an annular groove; 22. a through groove; 23. and (4) mounting the groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides the following technical solutions: a grouping winding type dry-type transformer comprises three winding assemblies 2, each winding assembly 2 comprises a shell 8, an iron core 9 and a carbon fiber coil framework 10, a cover plate is installed at the top of each shell 8 through bolts, the carbon fiber coil framework 10 has high thermal conductivity, two iron yokes 4 are respectively inserted into the tops and the bottoms of the three iron cores 9, the iron yokes 4 play a role of a closed magnetic circuit, clamping pieces 3 are installed on two side walls of the upper iron yokes 4, three high-voltage terminals 6 are arranged on the side wall of one clamping piece 3 at equal intervals, a low-voltage outlet copper bar 5 is installed at the top of the other clamping piece 3, each carbon fiber coil framework 10 is a hollow cylinder and is sleeved outside one iron core 9, the carbon fiber coil frameworks 10 and the iron cores 9 are located inside the shells 8, coils are wound on each carbon fiber coil framework 10 and the iron cores 9, the coils on the carbon fiber coil frameworks 10 are high-voltage coils a, coil on the iron core 9 is low voltage coil, low voltage coil's the number of turns is less than high voltage coil's the number of turns, impartial distance is provided with setting element 20 on every carbon fiber coil skeleton 10 and iron core 9's the outer wall, every setting element 20 all includes the positioning seat 17 that two symmetries set up, every positioning seat 17 all includes L type seat 14, and the coil twines on carbon fiber coil skeleton 10 and iron core 9 through L type seat 14, all slides on every L type seat 14's the perpendicular limit lateral wall and is provided with arc piece 16.

Further, all from top to bottom the equidistance has seted up logical groove 22 on every carbon fiber coil skeleton 10's the lateral wall, it is two to divide into to lead to groove 22, and two are listed as and lead to the setting of groove 22 symmetry, establish the region between iron core 9 and carbon fiber coil skeleton 10 into interior air flue, establish the region between carbon fiber coil skeleton 10 and casing 8 into outer air flue, eight exhaust holes 11 have all been seted up on every casing 8's the top outer wall, every four exhaust holes 11 are a set of, and two sets of exhaust hole 11 symmetries set up, every exhaust hole 11 all slopes to set up downwards, interior air flue and outer air flue exhaust wind are along 8 lateral walls slope downwardly discharge of casing, can avoid the dust to get into in the casing 8.

Furthermore, three below around subassembly 2 is provided with base 1, and yoke 4 of below is fixed in on the base 1, and three fan 7 is installed side by side at the top of base 1, and the air outlet of every fan 7 all is located the bottom of a casing 8, and six ventilative grooves 12 have all been seted up to the equal array in bottom of every casing 8, and every fan 7 all blows into in its interior air flue and the outer air flue through the ventilative groove 12 of a casing 8.

Concrete, all seted up spout 15 on every L type seat 14's the perpendicular limit lateral wall, the one end of every arc piece 16 is hemispherical, and the other end is the plane, and the plane end of every arc piece 16 all slides and sets up in a spout 15 to be connected with the spring with the deepest of spout 15, the hemispherical one end of arc piece 16 is convenient for advance or take out L type seat 14 with the coil card, promotes the stability that the coil card advances L type seat 14.

It is worth to be noted that, annular grooves 21 are formed in the outer walls of each iron core 9 and the carbon fiber coil bobbin 10 at equal intervals from top to bottom, each positioning member 20 includes a first half ring 18 and a second half ring 19, and two half rings of each positioning member 20 are embedded in one annular groove 21.

Further, the bottom of the inner side of each shell 8 is fixed with an annular clamping seat 13, the top of each clamping seat 13 is provided with an annular mounting groove 23, and the bottom end of each carbon fiber coil framework 10 is matched with one mounting groove 23, so that the stability of the carbon fiber coil framework 10 is improved.

The utility model discloses a theory of operation and use flow: when the utility model is used, a worker firstly winds the low-voltage coil and the high-voltage coil a onto the iron core 9 and the high-voltage coil framework 10 respectively, the low-voltage coil and the high-voltage coil a are clamped in the positioning seat 17 of the positioning piece 20 in the coil winding process, the coil slides downwards along the inner wall of the L-shaped seat 14, the arc-shaped block 16 is extruded into the chute 15, the spring is in a compression state until the coil slides to the top of the transverse edge of the L-shaped seat 14, the arc-shaped part of the arc-shaped block 16 slides out of the chute 15 under the action of the spring, and the positioning seat 17 positions the coil;

after orderly winding the coil to a specified number of turns, firstly installing an iron core 9 at the center in a shell 8, enabling two ends of the iron core 9 to exceed the shell 8, sleeving a carbon fiber coil framework 10 outside the iron core 9 from top to bottom, enabling the bottom of the carbon fiber coil framework to be matched with an installation groove 23 of a clamping seat 13, installing a cover plate on the shell 8 through bolts, installing three winding assemblies 2 on a base 1, enabling a ventilation groove 12 at the bottom of each shell 8 to be located at the top of a fan 7, respectively inserting two iron yokes 4 at the top and the bottom of the three iron cores 9, and finally installing a clamping piece 3, a low-voltage outlet copper bar 5 and a high-voltage terminal 6;

when the transformer works, the fan 7 is started to blow air to the inner air passage and the outer air passage, the air of the inner air passage flows to the outer air passage through the groove 22, and finally the air of the two air passages flows out from the exhaust holes 11 to dissipate heat of the transformer.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A group wound dry transformer comprising three wound modules (2), characterized in that: each winding assembly (2) comprises a shell (8), iron cores (9) and carbon fiber coil frameworks (10), the tops and the bottoms of the three iron cores (9) are respectively inserted with two iron yokes (4), two side walls of the iron yokes (4) above the three iron yokes are respectively provided with a clamping piece (3), the side wall of one clamping piece (3) is equidistantly provided with three high-voltage terminals (6), the top of the other clamping piece (3) is provided with a low-voltage outlet copper bar (5), each carbon fiber coil framework (10) is a hollow cylinder and is sleeved outside one iron core (9), the carbon fiber coil frameworks (10) and the iron cores (9) are respectively positioned inside the shell (8), each carbon fiber coil framework (10) and the iron cores (9) are respectively wound with coils, and each carbon fiber coil framework (10) and the outer wall of the iron core (9) are respectively provided with positioning pieces (20) at equal intervals, every locating element (20) all includes positioning seat (17) that two symmetries set up, every positioning seat (17) all include L type seat (14), and the coil passes through L type seat (14) and twines on carbon fiber coil skeleton (10) and iron core (9), every all slide on the perpendicular limit lateral wall of L type seat (14) and be provided with arc piece (16).

2. A block-wound dry-type transformer according to claim 1, wherein: every all from top to bottom the equidistance has been seted up on the lateral wall of carbon fiber coil skeleton (10) and has been led to groove (22), leads to groove (22) and divide into two, and two are listed as and lead to groove (22) symmetry setting, every eight exhaust holes (11) have all been seted up on the top outer wall of casing (8), and every four exhaust holes (11) are a set of, and two sets of exhaust hole (11) symmetry setting, every exhaust hole (11) all slope and set up downwards.

3. A block-wound dry-type transformer according to claim 1, wherein: three be provided with base (1) around the below of subassembly (2), and iron yoke (4) of below are fixed in on base (1), three fan (7) are installed side by side at the top of base (1), and the air outlet of every fan (7) all is located the bottom of a casing (8), every six ventilative grooves (12) have all been seted up in the array in the bottom of casing (8).

4. A block-wound dry-type transformer according to claim 1, wherein: every spout (15) have all been seted up on the perpendicular limit lateral wall of L type seat (14), every the one end of arc piece (16) is hemispherical, and the other end is the plane, every the plane end of arc piece (16) all slides and sets up in a spout (15) to be connected with the spring with the deepest of spout (15).

5. A block-wound dry-type transformer according to claim 4, wherein: every ring channel (21) have all been seted up from top to bottom the equidistance on the outer wall of iron core (9) and carbon fiber coil skeleton (10), every locating element (20) all include first semi-ring (18) and second semi-ring (19), and two semi-rings of every locating element (20) all inlay and locate in a ring channel (21).

6. A block-wound dry-type transformer according to claim 1, wherein: each annular clamping seat (13) is fixed to the bottom of the inner side of the shell (8), each annular mounting groove (23) is formed in the top of each clamping seat (13), and the bottom end of each carbon fiber coil framework (10) is matched with one mounting groove (23).