CN213424788U

CN213424788U - High overload oil immersion type transformer insulation structure

Info

Publication number: CN213424788U
Application number: CN202022922230.7U
Authority: CN
Inventors: 唐建荣
Original assignee: Nanjing Daqo Transformer Systems Co ltd
Current assignee: Nanjing Daqo Transformer Systems Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-06-11
Anticipated expiration: 2030-12-08

Abstract

The utility model relates to a high overload oil immersion type transformer insulation structure, which comprises a sleeve and an insulation mechanism, wherein the insulation mechanism is arranged inside the sleeve, and a dismounting mechanism is arranged on one side of the sleeve; the sleeve comprises an upper sleeve cover and a lower sleeve cover, the lower sleeve cover is arranged at the bottom of the upper sleeve cover, one side of the upper sleeve cover is provided with a connecting hinge, one side of the connecting hinge is connected with the lower sleeve cover, and the high-voltage coil is elastically connected with the lower sleeve cover. The utility model discloses inside installing insulating iron core at lower upper shield, the silica gel layer of insulating iron core one side can be insulating and the heat dissipation to insulating iron core after that, follows through the inside oil of oil duct at the sleeve inner loop, and then when low voltage coil and high voltage coil heat absorption that will radiate at the during operation, further heat dissipation with higher speed through the thermovent of sleeve one side after that, and then guaranteed low voltage coil and high voltage coil's normal work, the effectual radiating effect that has improved.

Description

High overload oil immersion type transformer insulation structure

Technical Field

The utility model relates to an oil-immersed transformer field especially relates to a high oil-overload soaks formula transformer insulation system.

Background

The oil immersed transformer is a novel high-performance transformer with more reasonable structure and better performance, and the three-dimensional wound iron core has no air gap in a magnetic circuit because three core columns are arranged in a three-dimensional manner in an equilateral triangle, so that the winding is tighter, the three magnetic circuits are consistent in length and shortest, and the cross sectional area of the core columns of the iron core is closer to a circle, so that the performance is further improved, the loss is reduced, the noise is reduced, the three-phase balance is realized, the third harmonic component is reduced, and the product is more suitable for the transformation of power grids of urban and rural enterprises and industrial and mining enterprises. In the actual use process, the existing immersed transformer insulation structure still has the condition of poor heat dissipation effect, so that the heat dissipation efficiency is low. Therefore, how to provide an oil-immersed transformer insulation structure with good heat dissipation is a technical problem that needs to be solved by those skilled in the art at present. In view of the above problems, the present designer is based on the practical experience and professional knowledge that are abundant for many years in engineering application of such products, and is engaged with the application of theory to actively make research and innovation, so as to create an insulation structure of a high-overload oil-immersed transformer, which is more practical.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the oil-immersed transformer insulation structure with good heat dissipation is provided.

In order to overcome prior art's above-mentioned defect, the utility model discloses an inside oil of oil duct is at the sleeve inner loop, and then absorbs at the heat that the during operation will be shed when low voltage coil and high-voltage coil, and then further the heat dissipation with higher speed through the thermovent of sleeve one side, and then has guaranteed low voltage coil and high-voltage coil's normal work, the effectual radiating effect that has improved to solve the current not good problem of formula transformer insulation system radiating effect that soaks among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the high-overload oil immersion type transformer insulation structure comprises a sleeve and an insulation mechanism, wherein the insulation mechanism is arranged in the sleeve, and a dismounting mechanism is arranged on one side of the sleeve;

the insulating mechanism comprises an insulating iron core, a silica gel layer is arranged on the outer side of the insulating iron core, a low-voltage coil is arranged on the outer side of the silica gel layer, an oil duct is arranged on the outer side of the low-voltage coil, a high-voltage coil is arranged on the outer side of the oil duct, a heat dissipation port is formed in the sleeve, the heat dissipation port is arranged at the top of the sleeve, the sleeve comprises an upper sleeve cover and a lower sleeve cover, the lower sleeve cover is arranged at the bottom of the upper sleeve cover, a connecting hinge is arranged on one side of the upper sleeve cover, one side of the connecting hinge is connected with the lower sleeve cover, and the high-voltage coil,

the disassembly mechanism comprises a first limiting block, a mounting hole is formed in one side of the first limiting block, and an internal thread is arranged inside the mounting hole.

Further, a supporting block is arranged on one side of the high-voltage coil, a limiting spring is arranged on one side of the supporting block, a fixing block is arranged on one side of the limiting spring, and one side of the fixing block is connected with the lower sleeve cover.

Further, first stopper bottom is provided with the second installation piece, the joint interface has been seted up to second installation piece one side, the inside fixed slot that has seted up of joint interface, the fixed slot inner wall is provided with the internal thread.

Further, the inside spacing bolt that is provided with of mounting hole, spacing bolt outside one side is provided with the external screw thread, spacing bolt one end runs through mounting hole and fixed slot and extends to fixed slot outside one side.

In a preferred embodiment, a connecting hole is formed in one side of the limiting bolt, a limiting inserting strip is arranged inside the connecting hole, and a moving hole is formed in one end of the limiting bolt.

Further, the inner wall of the moving hole is provided with an internal thread, a movable sleeve is arranged inside the moving hole and provided with a bolt, and a screw head is arranged at one end of the movable sleeve and provided with a screw head.

Furthermore, the cross section of the first limiting block is convex, and the cross section of the second mounting block is concave.

Furthermore, one side of the first limiting block is connected with the upper sleeve cover, one side of the second mounting block is connected with the lower sleeve cover, and the first limiting block is made of stainless steel materials.

The utility model discloses a technological effect and advantage:

1. when the insulating iron core is used, the sleeve is combined by the upper sleeve cover and the lower sleeve cover, then the first limiting block of the upper sleeve cover and the second mounting block of the lower sleeve cover are fixed through the clamping port, then the limiting bolt is mounted at the joint of the first limiting block and the second mounting block, then the limiting inserting strip is mounted inside the connecting port on one side of the limiting bolt for re-fixing, finally the movable sleeve bolt is mounted at one end of the limiting bolt, and then the bolt head on one end of the movable sleeve bolt is used for re-fixing, so that the fixing effect is effectively improved, the insulating iron core is mounted inside the lower sleeve cover, then the silica gel layer on one side of the insulating iron core can insulate and radiate the insulating iron core, oil passing through the oil duct circulates in the sleeve, and then the radiated heat is absorbed when the low-voltage coil and the high-voltage coil work, and then the heat radiation is further accelerated through the heat radiation port on one side of the sleeve, thereby ensuring the normal work of the low-voltage coil and the high-voltage coil and effectively improving the heat dissipation effect;

2. when needs use, to assemble to have insulating iron core and install inside the lower housing cap, then through at lower housing cap internally mounted fixed block, then through the spacing spring of fixed block side-mounting, support the piece through installing in spacing spring one side after that, then through the fixed block, spacing spring and the cooperation that supports the piece, and then support to the insulating iron core that has high voltage coil, the fixed effect of effectual improvement installation, after that when the insulating iron core harm needs to be changed the maintenance, support the piece through manual twitch, and then take out the insulating iron core of damage and thereby the insulating iron core of more renewal, the effectual maintenance efficiency that has improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is the structure schematic diagram of the high overload oil-immersed transformer insulation structure of the present invention.

Fig. 2 is a schematic view of the structure of the middle insulation mechanism of the present invention.

Fig. 3 is an enlarged view of a portion a in fig. 1 according to the present invention.

Fig. 4 is an enlarged view of the position B in fig. 2 according to the present invention.

The reference signs are: 1. a sleeve; 2. an insulating iron core; 3. a silica gel layer; 4. a low-voltage coil; 5. an oil passage; 6. a high-voltage coil; 7. a heat dissipation port; 8. covering the sleeve; 9. a lower sleeve cover; 10. connecting a hinge; 11. a resisting block; 12. a limiting spring; 13. a fixed block; 14. a first stopper; 15. mounting holes; 16. a second mounting block; 17. a card interface; 18. fixing grooves; 19. a limit bolt; 20. limiting the cutting; 21. moving the hole; 22. the bolt is movably sleeved; 23. a screw head.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are the directions or positional relationships indicated on the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. This embodiment is written in a progressive manner.

The insulation structure of the high overload oil immersed transformer shown in the attached figures 1-4 comprises a sleeve 1 and an insulation mechanism, wherein the insulation mechanism is arranged in the sleeve 1, and a dismounting mechanism is arranged on one side of the sleeve 1; insulating mechanism includes insulating iron core 2, the insulating iron core 2 outside is provided with silica gel layer 3, the silica gel layer 3 outside is provided with low tension coil 4, the low tension coil 4 outside is provided with oil duct 5, the oil duct 5 outside is provided with high tension coil 6, thermovent 7 has been seted up on sleeve 1, the thermovent sets up at telescopic top, sleeve 1 includes upper cover 8 and lower cover 9, lower cover 9 sets up in upper cover 8 bottom, upper cover 8 one side is provided with connection hinge 10, connection hinge 10 one side is connected with lower cover 9, high tension coil 6 and lower cover 9 elastic connection, disassembly body includes first stopper 14, mounting hole 15 has been seted up to first stopper 14 one side, the inside internal thread that is provided with of mounting hole 15.

Preferably, in the above embodiment, the high-voltage coil 6 is provided with a supporting block 11 on one side, a limiting spring 12 is provided on one side of the supporting block 11, a fixing block 13 is provided on one side of the limiting spring 12, and one side of the fixing block 13 is connected to the lower cap 9.

As a preferred example of the above embodiment, as shown in fig. 4, the bottom of the first limiting block 14 is provided with a second mounting block 16, one side of the second mounting block 16 is provided with a clip interface 17, a fixing groove 18 is formed inside the clip interface 17, and an inner wall of the fixing groove 18 is provided with an internal thread, so that the first limiting block 14 can be mounted on the second mounting block 16 through the clip interface 17.

As a preferred example of the above embodiment, as shown in fig. 4, a limiting bolt 19 is disposed inside the mounting hole 15, an external thread is disposed on an external side of the limiting bolt 19, and one end of the limiting bolt 19 penetrates through the mounting hole 15 and the fixing groove 18 and extends to an external side of the fixing groove 18, so that the limiting bolt 19 fixes the first limiting block 14 and the second mounting block 16 through the mounting hole 15 and the fixing groove 18.

As a preferred example of the above embodiment, as shown in fig. 4, a connecting hole is formed at one side of the limiting bolt 19, a limiting slip 20 is disposed inside the connecting hole, and a moving hole 21 is formed at one end of the limiting bolt 19, so that the limiting slip 20 can be secondarily fixed to the first limiting block 14 and the second mounting block 16 through the connecting hole.

As shown in fig. 4, as a preferred embodiment, the inner wall of the moving hole 21 is provided with an internal thread, the moving hole 21 is internally provided with a movable sleeve bolt 22, and one end of the movable sleeve bolt 22 is provided with a screw head 23, so that the sleeve bolt is threadedly mounted with the moving hole 21 of the limit bolt 19 through the sleeve bolt.

As shown in fig. 4, the cross-sectional shape of the first stopper 14 is a convex shape, and the cross-sectional shape of the second mounting block 16 is a concave shape, so as to facilitate mounting by the first stopper 14 and the second mounting block 16.

As a preferred embodiment, as shown in fig. 4, one side of the first limiting block 14 is connected to the upper cover 8, one side of the second mounting block 16 is connected to the lower cover 9, and the first limiting block 14 is made of stainless steel material, so as to prolong the service life of the first limiting block 14.

The utility model discloses the theory of operation: when the fixing device is used, in order to strengthen the fixing and the dismounting, the insulating iron core 2, the silica gel layer 3, the low-voltage coil 4, the oil duct 5 and the high-voltage coil 6 are assembled, then the assembled insulating iron core 2 is installed inside the lower sleeve cover 9, then the supporting block 11, the limiting spring 12 and the fixing block 13 inside the lower sleeve cover 9 are matched, further the high-voltage coil 6 is supported through the supporting block 11, then the lower sleeve cover 9 and the upper sleeve cover 8 are installed through hinges, the second installation block 16 of the lower sleeve cover 9 and the first limiting block 14 of the upper sleeve cover 8 are clamped and installed through the clamping interface 17, then the first limiting block 14 and the second limiting block are preliminarily fixed through the limiting bolt 19, then the second fixing block is fixed again through the limiting inserting strip 20 installed on one side of the limiting bolt 19, then the bolt 22 is movably sleeved through the installation on one end of the limiting bolt 19, and further the screw head 23 on one end of the movable sleeved bolt 22 is fixed again, in order to strengthen the heat dissipation effect of the insulating iron core 2, the insulating chip is insulated and radiated through the silica gel layer 3, then oil in the oil duct 5 circulates in the sleeve 1, and further absorbs heat dissipated by the low-voltage coil 4 and the high-voltage coil 6 during working, and then the heat is further accelerated through the heat dissipation port 7 on one side of the sleeve 1, so that the normal work of the low-voltage coil 4 and the high-voltage coil 6 is ensured. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a high overload oil immersion transformer insulation system which characterized in that: the insulation device comprises a sleeve (1) and an insulation mechanism, wherein the insulation mechanism is arranged in the sleeve (1), and a dismounting mechanism is arranged on one side of the sleeve (1);

the insulation mechanism comprises an insulation iron core (2), a silica gel layer (3) is arranged on the outer side of the insulation iron core (2), a low-voltage coil (4) is arranged on the outer side of the silica gel layer (3), an oil duct (5) is arranged on the outer side of the low-voltage coil (4), a high-voltage coil (6) is arranged on the outer side of the oil duct (5), a heat dissipation port (7) is formed in the sleeve (1), the heat dissipation port is formed in the top of the sleeve, the sleeve (1) comprises an upper sleeve cover (8) and a lower sleeve cover (9), the lower sleeve cover (9) is arranged at the bottom of the upper sleeve cover (8), a connecting hinge (10) is arranged on one side of the upper sleeve cover (8), one side of the connecting hinge (10) is connected with the lower sleeve cover (9), and the high-voltage coil (6) is elastically connected with,

the disassembly mechanism comprises a first limiting block (14), a mounting hole (15) is formed in one side of the first limiting block (14), and an internal thread is arranged inside the mounting hole (15).

2. The high overload oil-immersed transformer insulation structure according to claim 1, wherein: high-voltage coil (6) one side is provided with supports piece (11), support piece (11) one side and be provided with spacing spring (12), spacing spring (12) one side is provided with fixed block (13), fixed block (13) one side is connected with lower housing cap (9).

3. The high overload oil-immersed transformer insulation structure according to claim 1, wherein: first stopper (14) bottom is provided with second installation piece (16), joint interface (17) have been seted up to second installation piece (16) one side, fixed slot (18) have been seted up to joint interface (17) inside, fixed slot (18) inner wall is provided with the internal thread.

4. The high overload oil-immersed transformer insulation structure according to claim 3, wherein: the mounting hole (15) is internally provided with a limiting bolt (19), an external thread is arranged on one side of the outside of the limiting bolt (19), and one end of the limiting bolt (19) penetrates through the mounting hole (15) and the fixing groove (18) and extends to one side of the outside of the fixing groove (18).

5. The high overload oil-immersed transformer insulation structure according to claim 4, wherein: a connecting hole is formed in one side of the limiting bolt (19), a limiting inserting strip (20) is arranged inside the connecting hole, and a moving hole (21) is formed in one end of the limiting bolt (19).

6. The high overload oil-immersed transformer insulation structure according to claim 5, wherein: the inner wall of the moving hole (21) is provided with an internal thread, a movable sleeve is arranged inside the moving hole (21) to establish a bolt (22), and a screw head (23) is arranged at one end of the movable sleeve to establish the bolt (22).

7. The high overload oil-immersed transformer insulation structure according to claim 3, wherein: the cross section of the first limiting block (14) is convex, and the cross section of the second mounting block (16) is concave.

8. The high overload oil-immersed transformer insulation structure according to claim 7, wherein: one side of the first limiting block (14) is connected with the upper sleeve cover (8), one side of the second mounting block (16) is connected with the lower sleeve cover (9), and the first limiting block (14) is made of stainless steel materials.