CN116246871A

CN116246871A - Transformer framework

Info

Publication number: CN116246871A
Application number: CN202310517593.8A
Authority: CN
Inventors: 柴文
Original assignee: Sichuan Fumeigao Electronics Co ltd
Current assignee: Sichuan Fumeigao Electronics Co ltd
Priority date: 2023-05-10
Filing date: 2023-05-10
Publication date: 2023-06-09
Anticipated expiration: 2043-05-10
Also published as: CN116246871B

Abstract

The invention discloses a transformer framework, which belongs to the technical field of transformers and comprises a spool, wherein end plates are fixedly connected to two ends of the spool, and wiring terminals are fixedly connected to the end plates, and the transformer framework is characterized in that a separation assembly is arranged in the middle of the spool and comprises: the fixed pipe is fixedly connected to the outer wall of the middle of the spool, an annular chute is arranged on the end face of the fixed pipe, and the annular chute divides the fixed pipe into an inner pipe and an outer pipe; the two movable rings are respectively sleeved on the bobbins at two sides of the fixed pipe in a sliding way, the movable rings are integrally formed with the sliding pipe on the end face, close to the fixed pipe, of the movable rings, and the sliding pipe is inserted in the annular sliding groove in a sealing way. This transformer skeleton is through setting up the subassembly that separates, can adjust the common region of barricade sticky tape and coil wire winding, compares in prior art and sets up the mode of adjusting the baffle between barricade sticky tape and coil, and this device can satisfy the demand of more scenes, accords with the demand of transformer wire winding test more.

Description

Transformer framework

Technical Field

The invention belongs to the technical field of transformers, and particularly relates to a transformer framework.

Background

An electronic transformer is an electrical energy conversion device. The type of the electronic transformer may be classified into a single-slot transformer, a double-slot transformer, and a multi-slot transformer. The main materials of the transformer comprise a framework, wires, insulating adhesive tapes and retaining wall adhesive tapes, wherein the wires are required to be wound on the framework to form coils during manufacturing, the insulating adhesive tapes are adhered between the coils, and the coils are isolated from the end faces of the framework through the retaining wall adhesive tapes. Taking a double-slot transformer as an example, a partition plate is arranged in the middle of a framework of the double-slot transformer, and the framework is divided into a primary coil winding area and a secondary coil winding area.

When testing and designing a transformer, a researcher needs to comprehensively consider the design of the framework partition plate according to factors such as thickness of wires, winding turns, size of a retaining wall adhesive tape and the like. The patent document with publication number CN107256779A discloses a transformer skeleton, which comprises a copper wire adhesive tape isolating device, and comprises a middle check ring and isolating rings arranged on two sides of the middle check ring, wherein the middle check ring is fixed on a spool, the isolating rings on two sides are respectively and adjustably arranged on the spool through sliding grooves, and a plurality of fork grooves are formed in the sliding grooves and used for locking the positions of the isolating rings. This scheme is divided into copper line region and sticky tape region through this spacer ring, when using, according to the demand of copper line volume of twining, through the position of adjustment spacer ring to play the regulation effect to copper line region size.

The above-mentioned scheme is although can be according to the copper line volume of twining to the regional size of copper line adjustment, but because the fork groove position on this spout is fixed, can only make a round trip to adjust between fixed several gears, and the precision is not high, is difficult to satisfy the high accuracy demand in the test process.

For this reason, we propose a transformer skeleton to solve the above-mentioned problems.

Disclosure of Invention

The invention aims to solve the problems that in the prior art, a transformer framework is inconvenient to adjust a coil area with high precision, and the requirement of high precision in a test design process is difficult to meet. In addition, when the existing transformer framework is used, the coils can be wound from inside to outside in sequence, so that the coil which is closer to the spool part is poor in heat dissipation effect, and the problem that the transformer is difficult to continuously test and design is solved.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the utility model provides a transformer skeleton, includes the spool the equal fixedly connected with end plate in both ends of spool, fixedly connected with binding post on the end plate, the middle part of spool is equipped with the separation subassembly, the separation subassembly includes:

the fixed pipe is fixedly connected to the outer wall of the middle of the spool, an annular chute is arranged on the end face of the fixed pipe, and the fixed pipe is divided into an inner pipe and an outer pipe by the annular chute;

the two loose rings are respectively sleeved on the bobbins on two sides of the fixed pipe in a sliding mode, the end faces, close to the fixed pipe, of the loose rings are integrally provided with sliding pipes, the sliding pipes are inserted in the annular sliding grooves in a sealing mode, one side, far away from the fixed pipe, of each loose ring is provided with a liquid storage cavity, the end faces of the sliding pipes are provided with a plurality of connecting channels which are communicated with the liquid storage cavities and the annular sliding grooves, the side walls of the loose rings are further provided with butt joint channels communicated with the liquid storage cavities, and the opening of each butt joint channel is provided with a sealing plug.

Preferably, the movable ring is fixedly connected with a sealing ring at the end face of the movable ring away from the fixed pipe, a cover plate is connected to the outer part of the sealing ring and provided with an end wall and a side wall, the end face of the movable ring, the outer wall of the sealing ring and the end wall and the side wall of the cover plate jointly form a liquid storage cavity, and the liquid storage cavity is an annular cavity.

Preferably, the end face, far away from the fixed pipe, of the movable ring is further integrally formed with a sleeve, and the inner wall of the sleeve is attached to the outer wall of the outer pipe.

Preferably, the end face of the movable ring, which is positioned in the liquid storage cavity, is provided with a plurality of heat dissipation grooves extending into the sleeve, the plurality of heat dissipation grooves are distributed in a circumferential array around the axis of the movable ring, and the butt joint channel is communicated with the liquid storage cavity through one of the heat dissipation grooves.

Preferably, a heat dissipation cavity is arranged in the outer tube, the heat dissipation cavity is of an annular structure, and the heat dissipation cavity is communicated with the annular chute.

Preferably, the outer side wall of the outer tube is provided with a spiral raised line, the inner side wall of the sleeve is provided with a spiral groove, and the spiral raised line is in threaded connection with the spiral groove.

Preferably, the heat dissipation cavity is arranged close to the spiral raised line.

Preferably, the heat dissipation groove is formed close to the spiral groove.

Preferably, a hollow spiral channel is arranged in the spiral raised strip, and two ends of the spiral channel are communicated with the heat dissipation cavity.

Preferably, an annular flange is arranged on the outer side wall of the outer tube, and the annular flange is arranged in the middle of the outer tube.

In summary, the technical effects and advantages of the present invention are: this transformer skeleton is through setting up the subassembly that separates, can adjust the common region of barricade sticky tape and coil wire winding, compares in prior art and sets up the mode of adjusting the baffle between barricade sticky tape and coil, and this device can satisfy the demand of more scenes, accords with the demand of transformer wire winding test more.

Through setting up airtight space, can realize the regulation to separate the subassembly through injection or the mode of drawing transformer oil, compare in prior art's mechanical joint mode, this device can realize high accuracy and adjust, simultaneously, can be through the speed of control injection or the speed of drawing transformer oil, the regulation speed of this separation subassembly.

The heat of the coil can be transferred outwards by utilizing the heat convection of the transformer oil by arranging the heat dissipation cavity, the heat dissipation groove and the liquid storage cavity which are mutually communicated, so that a good heat dissipation effect is achieved on the coil; and through being provided with spiral sand grip and spiral passageway, can further realize better heat dissipation through the mode of heat conduction through the mode of increasing the surface area.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic view of the distribution of the retaining wall tape and coil positions according to the present invention;

FIG. 3 is an exploded view of the separator assembly of the present invention;

FIG. 4 is a schematic view of a fixing tube according to the present invention;

FIG. 5 is a schematic cross-sectional view of a fixing tube according to the present invention;

FIG. 6 is a schematic diagram of a movable ring according to the present invention;

FIG. 7 is a second schematic diagram of a movable ring according to the present invention;

FIG. 8 is a schematic cross-sectional view of a movable ring according to the present invention;

FIG. 9 is a schematic view of a cover plate according to the present invention;

FIG. 10 is a schematic cross-sectional view of a separator assembly of the present invention;

FIG. 11 is an enlarged schematic view of the structure of FIG. 10 at A;

FIG. 12 is a schematic view of another embodiment of the present invention;

FIG. 13 is a cross-sectional exploded view of the partition assembly of FIG. 12;

FIG. 14 is an enlarged schematic view of the structure of FIG. 13 at B;

fig. 15 is an enlarged schematic view of the structure at C in fig. 13.

In the figure: 1. a spool; 11. an end plate; 12. a connection terminal;

2. a partition assembly; 21. a fixed tube; 22. a movable ring; 23. a cover plate;

211. an outer tube; 212. an annular flange; 213. an inner tube; 214. an annular chute; 215. an inner sidewall of the inner tube; 216. a heat dissipation cavity; 217. spiral raised strips; 2171. a spiral channel; 218. a spiral groove;

221. a sleeve; 222. a sliding tube; 2221. a connection channel; 223. a seal ring; 2231. the inner side wall of the sealing ring; 224. a liquid storage cavity; 225. a heat sink; 2251. a docking channel; 2252. a sealing plug;

231. an end wall; 232. a sidewall; 233. and (5) an installation port.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

Example 1

As shown in fig. 1, a transformer framework comprises a bobbin 1, wherein end plates 11 are fixedly connected to two ends of the bobbin 1, connecting terminals 12 are fixedly connected to the end plates 11, and a separation assembly 2 is arranged in the middle of the bobbin 1. At the time of winding, the wire is wound in the direction of the end plate 11 against the partition member 2, and the retaining wall tape is wound between the wire and the end plate 11. Because the number of turns of the coil and the diameter of the coil are both changed in the test process, the width of the retaining wall tape is not fixed, and therefore, the separation component 2 in the embodiment is adjustable, and the distance between the separation component 2 and the end plate 11 can be freely adjusted.

As shown in fig. 2, the dashed line is a boundary line between the wire and the retaining wall tape, the dashed line is used as a boundary line, the partition assembly 2 and the end plate 11 are divided into an a area and a b area, the a area is used for accommodating the retaining wall tape, the b area is used for accommodating the wire, and the boundary between the a area and the b area is not fixed and dead, and can be freely adjusted. In addition, when the coil is detached, the separation assembly 2 can be adjusted towards the middle, so that a larger gap is formed between the separation assembly 2 and the coil, and the coil wound on the spool 1 is easier to detach, thereby being beneficial to improving the detachment efficiency.

As shown in fig. 3, the partition assembly 2 includes: a fixed tube 21 and two movable rings 22.

As shown in fig. 4 and 5, the fixed tube 21 is fixedly connected to the middle outer wall of the spool 1, and an annular chute 214 is provided on the end surface of the fixed tube 21, and the annular chute 214 divides the fixed tube 21 into an inner tube 213 and an outer tube 211.

As shown in fig. 6, 7 and 8, two movable rings 22 are respectively and slidably sleeved on the bobbins 1 on two sides of the fixed tube 21, a sliding tube 222 is integrally formed on the end surface of the movable ring 22 close to the fixed tube 21, the sliding tube 222 is inserted into the annular chute 214 in a sealing manner, that is, the end surface of the sliding tube 222 and three side walls of the annular chute 214 together form a closed area, and the size of the inner volume of the closed area can be changed along with the back and forth movement of the sliding tube 222 in the annular chute 214.

As shown in fig. 10 and 11, a liquid storage cavity 224 is provided on the side of the movable ring 22 away from the fixed tube 21.

Specifically, as shown in fig. 9, in order to facilitate the manufacture of the liquid storage cavity 224, a sealing ring 223 is fixedly connected to the end surface of the movable ring 22 away from the fixed pipe 21, and a cover plate 23 is connected to the outside of the sealing ring 223, so that the cover plate 23 can be made of ceramic material to achieve better heat conduction effect. The cover plate 23 has an end wall 231 and a side wall 232, the end wall 231 is circular, the side wall 232 extends along the vertical direction of the end wall 231, a circular mounting opening 233 is further formed in the end wall 231, and the end face of the movable ring 22, the outer wall of the sealing ring 223, and the end wall 231 and the side wall 232 of the cover plate 23 together form the liquid storage cavity 224. In order to increase the contact area between the liquid storage cavity 224 and the cover plate 23, the liquid storage cavity 224 is an annular cavity.

The periphery of the movable ring 22 is provided with a step, and when the movable ring is installed, the side wall 232 of the cover plate 23 is attached to the outer wall of the step and pushed inwards, so that the end wall 231 of the cover plate 23 is attached to the end part of the sealing ring 223 until the outer side wall of the cover plate 23 is flush with the end surface of the sealing ring 223, and at the moment, the side wall 232 of the cover plate 23 is just attached to the bottom wall of the step, so that a sealed liquid storage cavity 224 is formed between the cover plate 23 and the movable ring 22.

It should be further noted that the inner tube 213 of the fixing tube 21 has an inner tube inner side wall 215, the inner tube inner side wall 215 is fixedly connected to the outside of the spool 1, the seal ring 223 has a seal ring inner side wall 2231, and the seal ring inner side wall 2231 is hermetically and slidably disposed on the outside of the spool 1.

The end face of the sliding tube 222 is provided with a plurality of connecting channels 2221 for communicating the liquid storage cavity 224 with the annular chute 214, the side wall of the movable ring 22 is also provided with a butt joint channel 2251 communicated with the liquid storage cavity 224, and the opening of the butt joint channel 2251 is provided with a sealing plug 2252.

That is, the liquid storage cavity 224, the annular chute 214 and the connection channel 2221 together form a closed space, and the docking channel 2251 is used for connecting the closed space with the outside, so that after the opening of the docking channel 2251 communicating with the outside is plugged by the sealing plug 2252, a complete closed space is formed, so that the relative position of the sliding tube 222 and the liquid storage cavity 224 is not changed any more, and the effect of limiting and fixing is formed. When in use, insulating oil, preferably transformer oil, which is also an insulating liquid commonly used in large transformers, needs to be poured into the closed space through the butt joint channel 2251, and the transformer oil has good thermal stability and thermal conductivity.

When the position of the movable ring 22 needs to be adjusted, the pressure in the annular chute 214 can be changed by injecting or extracting transformer oil into the butt-joint channel 2251, and then the relative position of the sliding pipe 222 and the annular chute 214 can be adjusted by the change of the pressure, so that the movable ring 22 is controlled to be far away from or close to the fixed pipe 21, and the adjustment of the separation assembly 2 is realized, so that the adjustment of the area of the retaining wall adhesive tape and the area of the wire can be realized according to the width of the retaining wall adhesive tape and the turns and the diameter of the wire.

Specifically, when the range of the regions a and b is required to be increased as a whole, transformer oil may be injected into the docking channel 2251, and at this time, the amount of transformer oil in the closed region formed by the annular chute 214 and the slide pipe 222 increases, and the slide pipe 222 is pushed to move to the outside of the annular chute 214 when the pressure increases. Conversely, when the a, b ranges need to be narrowed, transformer oil may be drawn outwardly from within the docking channel 2251.

It should be noted that in this process, an injector with scales may be used to inject or extract transformer oil, and the amount of transformer oil extracted or injected can be determined by the scales, because the cross-sectional area of the annular chute 214 is fixed, and the closed area formed between the annular chute 214 and the sliding tube 222 is similar to a circular space, therefore, according to the volume conversion formula: v=sh, where V is the total volume of the sealed area, s is the sectional area of the annular chute 214, and h is the moving distance of the sliding tube 222, so that the moving distance of the sliding tube 222 can be obtained from the change in volume of the sealed space area with the sectional area s of the annular chute 214 unchanged.

That is, the moving distance of the sliding pipe 222 can be judged by observing the amount of the transformer oil extracted or injected, thereby realizing the precise adjustment of the position of the movable ring 22.

Simultaneously, the instantaneous flow of the transformer oil can be changed by selecting injectors with different outlet aperture sizes so as to control the flow rate of the transformer oil and further control the moving speed of the movable ring 22.

Compared with mechanical adjustment in the prior art, the hydraulic control is adopted in the embodiment, so that the adjustment distance can be intuitively observed and controlled, the adjustment with higher precision is achieved, and the high-precision requirement in the test process is met.

Besides, in this embodiment, besides the effect of adjusting by using the transformer oil as the liquid medium, the heat generated by the coil close to the middle part of the bobbin 1 can be better transferred outwards by using the good heat conductivity of the transformer oil, so as to realize the effect of heat dissipation.

Example two

The embodiment of the application further provides a transformer framework, as shown in fig. 6, 7 and 8, a sleeve 221 is integrally formed on the end face, far away from the fixed pipe 21, of the movable ring 22, the inner wall of the sleeve 221 is attached to the outer wall of the outer pipe 211, and under the action of the sleeve 221, the sealing effect of the sliding pipe 222 and the annular chute 214 can be improved.

The movable ring 22 is provided with a plurality of heat dissipation grooves 225 extending into the sleeve 221 on the end surface of the movable ring 224, the plurality of heat dissipation grooves 225 are distributed around the axis circumference array of the movable ring 22, the heat dissipation grooves 225 are of flat arc-shaped structures, the heat dissipation grooves 225 are distributed around the axis of the sleeve 221 at equal intervals, the butt joint channel 2251 is communicated with the liquid storage cavity 224 through one of the heat dissipation grooves 225, that is, transformer oil in the heat dissipation grooves 225 can generate heat convection with transformer oil in the liquid storage cavity 224, and therefore heat is transferred to the sleeve 221, and a better heat dissipation effect is achieved.

Example III

The embodiment of the application further provides a transformer framework, as shown in fig. 5, a heat dissipation cavity 216 is arranged inside the outer tube 211, the heat dissipation cavity 216 is of an annular structure, and the heat dissipation cavity 216 is communicated with the annular chute 214. Through being provided with heat dissipation chamber 216, can further realize the heat convection to the transformer oil in the annular chute 214, further increase the radiating area, improve the radiating effect.

In addition, as shown in fig. 10 and 11, the heat dissipation chamber 216 may be formed by sleeving a pipe with a plugging ring on the outer part of the outer pipe 211, wherein the plugging rings are provided at both ends of the pipe, an annular section is formed between the inner wall of the pipe and the outer wall of the outer pipe 211, and the inner wall of the plugging ring is hermetically connected with the outer wall of the outer pipe 211, so that both ends of the annular section are plugged, thereby forming the annular heat dissipation chamber 216.

Further, as shown in fig. 11, the heat dissipation chamber 216, the annular chute 214, the connection channel 2221, the liquid storage chamber 224 and the heat dissipation grooves 225 together form a closed space, and the closed space is communicated with the outside by a docking channel 2251 provided on one of the heat dissipation grooves 225.

Movement of the moveable ring 22 is achieved by varying the size of the space formed by the annular chute 214 and the sliding tube 222.

Example IV

The embodiment of the application further provides a transformer framework, as shown in fig. 12 and 13, a spiral raised line 217 is disposed on an outer side wall of the outer tube 211, a spiral groove 218 is disposed on an inner side wall of the sleeve 221, and the spiral raised line 217 is in threaded connection with the spiral groove 218.

In this embodiment, the connection relationship between the sleeve 221 and the outer tube 211 is changed from translational sliding to threaded connection, so that on one hand, the tightness between the sliding tube 222 and the annular chute 214 can be further improved, and the sliding tube 222 is prevented from accidentally falling out of the annular chute 214, on the other hand, the moving speed of the sliding tube 222 can be limited by the threaded connection, and by controlling the transformer oil injection speed and the threaded structure, the moving speed of the sliding tube 222 is jointly prevented from being too fast, and the stability of the whole separation assembly 2 is improved.

Since the movable ring 22 in this embodiment is spirally movable, a hose is required to be connected between the docking channel 2251 and the injector to effect injection or extraction of transformer oil.

Example five

The embodiment of the application further provides a transformer framework, as shown in fig. 13, 14 and 15, the heat dissipation cavity 216 is opened near the spiral raised line 217. The heat sink 225 is open proximate to the helical groove 218.

On the one hand, the spiral grooves 218 and the spiral protruding strips 217 have larger surface areas than the planar structure, so that the heat dissipation effect is better. The heat of the heat sink 225 and the heat dissipation chamber 216 can be better conducted outward.

And, the heat dissipation groove 225 and the heat dissipation cavity 216 are mutually communicated, so that heat convection can be formed by the transformer oil, and heat exchange between the heat dissipation groove 225 and the heat dissipation cavity 216 is realized in a heat convection mode.

Meanwhile, due to the close adhesion between the spiral grooves 218 and the spiral raised lines 217, heat exchange can be performed between the heat dissipation grooves 225 and the heat dissipation cavities 216 through a heat conduction mode.

In addition, since the spiral ribs 217 are distributed on the outer wall of the outer tube 211, heat inside the movable ring 22 can be better transferred to the middle portion of the outer tube 211 by the spiral ribs 217 themselves, and heat dissipation performance is further improved.

Example six

The embodiment of the application further provides a transformer framework, as shown in fig. 15, a hollow spiral channel 2171 is arranged in the spiral raised line 217, two ends of the spiral channel 2171 are both communicated with the heat dissipation cavity 216, and the spiral channel 2171 is also filled with transformer oil.

Under the action of the spiral channel 2171 and the transformer oil, heat can be better transferred in the spiral raised lines 217, heat on two sides of the spiral raised lines 217 is transferred towards the middle, and the heat dissipation effect is accelerated by utilizing better heat dissipation conditions in the middle of the spiral raised lines 217.

And both ends of the spiral channel 2171 are communicated with the heat dissipation cavity 216, so that heat dissipation can be performed by using a heat convection mode.

An annular flange 212 is formed on the outer side wall of the outer tube 211, and the annular flange 212 is arranged in the middle of the outer tube 211. The provision of the annular flange 212 facilitates the operator to fix the outer tube 211 with assistance through the annular flange 212, preventing damage to the spiral rib 217 and the spiral channel 2171 therein due to excessive force.

According to the coil heat dissipation device, through the arrangement of the adjustable separation component 2, not only can the high-precision adjustment of the upper region of the coil 1 in the test process be met, but also the heat dissipation effect on the coil can be greatly improved, and good heat dissipation conditions are created for continuous tests.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims

1. The utility model provides a transformer skeleton, includes spool (1) the equal fixedly connected with end plate (11) in both ends of spool (1), fixedly connected with binding post (12) on end plate (11), its characterized in that, the middle part of spool (1) is equipped with separation subassembly (2), separation subassembly (2) include:

the fixing device comprises a fixing pipe (21), wherein the fixing pipe (21) is fixedly connected to the outer wall of the middle of the spool (1), an annular chute (214) is arranged on the end face of the fixing pipe (21), and the annular chute (214) divides the fixing pipe (21) into an inner pipe (213) and an outer pipe (211);

the spool (1) of fixed pipe (21) both sides are established to two expansion ring (22) slip cap respectively, integrated into one piece has sliding tube (222) on the terminal surface that expansion ring (22) are close to fixed pipe (21), sliding tube (222) seal grafting is in annular spout (214), one side that fixed pipe (21) was kept away from to expansion ring (22) is equipped with stock solution chamber (224), be equipped with a plurality of connecting channel (2221) that link together stock solution chamber (224) and annular spout (214) on the terminal surface of sliding tube (222), still be equipped with on the lateral wall of expansion ring (22) with butt joint passageway (2251) of stock solution chamber (224) intercommunication, the opening part of butt joint passageway (2251) is equipped with sealing plug (2252).

2. A transformer skeleton according to claim 1, characterized in that the movable ring (22) is fixedly connected with a sealing ring (223) at the end surface far away from the fixed pipe (21), the outer part of the sealing ring (223) is connected with a cover plate (23), the cover plate (23) is provided with an end wall (231) and a side wall (232), the end surface of the movable ring (22), the outer wall of the sealing ring (223) and the end wall (231) and the side wall (232) of the cover plate (23) jointly form a liquid storage cavity (224), and the liquid storage cavity (224) is an annular cavity.

3. The transformer framework according to claim 1, characterized in that a sleeve (221) is integrally formed on the end surface of the movable ring (22) far away from the fixed tube (21), and the inner wall of the sleeve (221) is attached to the outer wall of the outer tube (211).

4. A transformer skeleton according to claim 3, characterized in that the end face of the movable ring (22) located in the liquid storage cavity (224) is provided with a plurality of heat dissipation grooves (225) extending into the sleeve (221), the plurality of heat dissipation grooves (225) are circumferentially arrayed around the axis of the movable ring (22), and the butt joint channel (2251) is communicated with the liquid storage cavity (224) through one of the heat dissipation grooves (225).

5. The transformer framework according to claim 4, wherein a heat dissipation cavity (216) is arranged inside the outer tube (211), the heat dissipation cavity (216) is of an annular structure, and the heat dissipation cavity (216) is communicated with the annular chute (214).

6. The transformer framework according to claim 5, wherein a spiral protruding strip (217) is provided on an outer side wall of the outer tube (211), a spiral groove (218) is provided on an inner side wall of the sleeve (221), and the spiral protruding strip (217) is screwed into the spiral groove (218).

7. A transformer armature according to claim 6, characterized in that the heat dissipation cavity (216) is open close to the spiral rib (217).

8. A transformer armature according to claim 7, characterized in that the heat sink (225) is open close to the spiral groove (218).

9. A transformer skeleton according to claim 8, characterized in that the spiral raised strips (217) are provided with hollow spiral channels (2171), and both ends of the spiral channels (2171) are communicated with the heat dissipation cavity (216).

10. The transformer framework according to claim 9, characterized in that an annular flange (212) is provided on the outer side wall of the outer tube (211), the annular flange (212) being provided in the middle of the outer tube (211).