Built-in transformer

Abstract

The invention discloses a built-in transformer, which belongs to the technical field of transformers, solves the problems of insufficient heat dissipation and poor heat dissipation uniformity caused by too fast oil flow rate due to the fact that an existing transformer only guides oil liquid to flow through the height difference of oil ducts, and comprises a transformation built-in cabinet, an oil liquid circulation pipeline, an air cooling forcing mechanism and a synchronous linkage mechanism, the voltage transformation built-in cabinet comprises a built-in box, the oil liquid circulation pipeline comprises a slow flow cooler and a circulation water pump, and the synchronous linkage mechanism comprises a linkage tooth holder, a built-in linkage part, a slow flow linkage part and an air cooling linkage part; the slow flow cooling part and the synchronous linkage mechanism are arranged, the synchronous linkage mechanism is driven by hot oil liquid, so that the slow flow linkage part and the built-in linkage part achieve a synergistic effect, the contact time of the oil liquid and a cooling medium is prolonged, the air cooling mechanism is forced to accelerate heat dissipation, the oil liquid in the immersion cavity is mechanically disturbed through the built-in linkage part, and the cooling effect is improved. Therefore, boundary layers and high-temperature and low-temperature areas are damaged, and convection heat exchange efficiency is enhanced.

Description

Technical Field

[0001] The present invention belongs to the technical field of transformers, and particularly relates to an in-built transformer. Background Art

[0002] With the transformation of the global energy structure and the enhancement of environmental protection awareness, new energy technologies have developed rapidly. Renewable energy sources such as wind energy and solar energy have occupied an increasingly important position in the energy field due to their clean and sustainable characteristics. However, new energy power generation equipment (such as wind turbines and solar photovoltaic power stations) usually has characteristics such as dispersion, intermittency, and instability, which bring many challenges to power transmission and equipment operation. In order to improve the operation efficiency and reliability of new energy equipment, the in-built transformer, as a key power conversion device, has received extensive attention.

[0003] Traditional transformers are usually large in size and difficult to adapt to the compact installation space of new energy equipment. For example, in a wind power tower, the space is limited, and the size of traditional transformers makes their installation and maintenance difficult. Moreover, when new energy equipment operates, a large amount of heat is generated, and the heat dissipation design of traditional transformers often fails to meet their high-efficiency heat dissipation requirements, resulting in too high an operating temperature of the equipment, affecting the equipment life and performance.

[0004] Chinese Patent CN107705961 B discloses a vegetable oil power transformer. The transformer includes: an oil tank and a pancake coil and an iron core arranged in the oil tank, and the oil tank is filled with vegetable oil; the pancake coil is provided with a plurality of transverse oil channels for the circulation of vegetable oil; the height of the middle oil channel in the middle is a first dimension value, and the height of the remaining oil channels is a fifth dimension value; the first dimension value is greater than the fifth dimension value, and the second dimension value, the third dimension value, and the fourth dimension value are all less than the first dimension value and greater than or equal to the fifth dimension value. However, the existing transformer only guides the flow of oil through the height difference of the oil channels (the middle oil channel is higher than other oil channels). If the oil flow rate is too fast, it is easy to cause insufficient heat dissipation. If the flow rate is too slow, the circulation efficiency is low, and the oil in the oil tank cannot be actively disturbed, making it easy to form local low-temperature areas and high-temperature areas in the oil tank, and the heat dissipation uniformity is poor. In view of the above problems, we propose an in-built transformer. Summary of the Invention

[0005] The purpose of the present invention is to provide an in-built transformer for the deficiencies of the existing technology, and solve the problems that the existing transformer only guides the flow of oil through the height difference of the oil channels, if the oil flow rate is too fast, it is easy to cause insufficient heat dissipation, if the flow rate is too slow, the circulation efficiency is low, and the oil in the oil tank cannot be actively disturbed, making it easy to form local low-temperature areas and high-temperature areas in the oil tank, and the heat dissipation uniformity is poor.

[0006] The present invention is implemented as follows. An in-built transformer, the in-built transformer includes:

[0007] The transformer built-in cabinet includes a built-in box and an upper cover plate, the upper cover plate is fixedly installed in the built-in box, and an immersion chamber is provided in the built-in box;

[0008] The oil circulation pipeline includes at least one group of oil extraction pipes, a slow flow cooler, a collecting ring pipe, and a circulating water pump. The circulating water pump is installed on the surface of the upper cover plate. The oil extraction pipe is detachably installed on the side wall of the built-in box. The slow flow cooler is arranged on one side of the built-in box, and the two ends are detachably connected to the collecting ring pipe and the oil extraction pipe respectively. A slow flow cooling part is arranged in the slow flow cooler. The slow flow cooling part is used to slowly stop and guide the hot oil, and drives the synchronous linkage mechanism based on the hot oil;

[0009] The air cooling forced mechanism is symmetrically arranged on both sides of the built-in box, and is used for contact-free air cooling of the hot oil in the slow-flow cooler;

[0010] The synchronous linkage mechanism is arranged on the inner side of the air-cooling forced mechanism and is connected to the slow-flow cooling part. It is used to disturb the oil in the immersion chamber and cooperate with the air-cooling forced mechanism. The synchronous linkage mechanism includes a linkage gear seat, a built-in linkage part, a slow-flow linkage part and an air-cooling linkage part. The linkage gear seat is rotatably arranged on the outer wall of the built-in box and is respectively connected to the built-in linkage part, the slow-flow linkage part and the air-cooling linkage part. The slow-flow linkage part is installed in the slow-flow cooler.

[0011] Preferably, the air cooling forcing mechanism comprises:

[0012] The air-cooled negative pressure seat is detachably mounted on the side wall of the built-in box, the air-cooled negative pressure seat is hollow inside, and at least one set of heat dissipation conductive seats is fixedly mounted thereon, and one end of the heat dissipation conductive seat away from the air-cooled negative pressure seat extends into the slow-flow cooler;

[0013] At least one set of exhaust seats, which can be detachably mounted on the slow-flow cooler and are in communication with the slow-flow cooler;

[0014] The negative pressure air pump is fixedly installed outside the built-in box and is connected to the air-cooled negative pressure seat. The negative pressure air pump exhaust port is detachably equipped with a hot air exhaust pipe;

[0015] At least one set of anti-blocking conducting pipes, the anti-blocking conducting pipes are installed on the air-cooled negative pressure seat, one end of the anti-blocking conducting pipes is connected to the air-cooled negative pressure seat, and the other end extends to the bottom of the slow flow cooler;

[0016] The auxiliary cooling component is arranged corresponding to the heat dissipation conductive seat and is connected to the air cooling linkage part, and is used for assisting the heat dissipation of the hot air discharged from the heat dissipation conductive seat;

[0017] The heat collecting and draining part is arranged in the slow flow cooler and is used for cooling the hot oil in the slow flow cooler.

[0018] Preferably, the slow flow cooler comprises:

[0019] The flow-delay drainage seat is arranged inside the flow-delay cooler. One end of the flow-delay drainage seat is communicated with the oil extraction pipe. An outer drainage cavity is formed by surrounding between the flow-delay drainage seat and the flow-delay cooler. The outer drainage cavity is communicated with the air extraction seat, and the heat-collecting drainage part is arranged inside the outer drainage cavity;

[0020] The oil overflow seat is arranged inside the flow-delay cooler, is communicated with the flow-delay drainage seat, and the side wall of the oil overflow seat is communicated with the confluence ring pipe for discharging the cooled hot oil;

[0021] The anti-blocking drive cavity is arranged at the bottom of the delay cooler and is communicated with the anti-blocking conduction pipe. The flow-delay linkage part is arranged inside the anti-blocking drive cavity.

[0022] Preferably, the flow-delay cooling part includes:

[0023] The flow-delay plunger is arranged inside the flow-delay drainage seat and is slidably connected with the flow-delay drainage seat. At least one group of flow-delay column grooves are formed on the flow-delay plunger, and at least one group of inclined drainage plates are installed inside the flow-delay column grooves;

[0024] The conical piston seat fixedly connected with the flow-delay plunger has both ends extending into the flow-delay drainage seat and the oil overflow seat respectively and is slidably connected with the oil overflow seat. A spiral drainage pipe is fixedly sleeved on the conical piston seat;

[0025] The support connecting rod is fixedly installed inside the conical piston seat. The end of the support connecting rod far away from the conical piston seat slidably extends into the anti-blocking drive cavity and is fixedly connected with a second stop seat. The second stop seat is connected with the flow-delay linkage part;

[0026] The first stop seat is fixedly sleeved on the outer wall of the support connecting rod and is slidably arranged inside the anti-blocking drive cavity;

[0027] The first return spring is fixedly embedded inside the anti-blocking drive cavity, and one end of the first return spring is fixedly connected with the first stop seat.

[0028] Preferably, the delay linkage part includes:

[0029] The extrusion sliding seat is fixedly installed on the second stop seat and is slidably connected with the inner wall of the anti-blocking drive cavity;

[0030] The driven torsion seat is rotatably arranged inside the anti-blocking drive cavity and is slidably connected with the extrusion sliding seat;

[0031] The first gear fixedly connected with the driven torsion seat is meshed and driven with the linkage tooth seat;

[0032] The torsion spring bearing tray fixedly embedded inside the anti-blocking drive cavity has a reset torsion spring fixedly embedded inside it. One end of the reset torsion spring is fixedly connected with the driven torsion seat.

[0033] Preferably, the heat-collecting drainage part includes:

[0034] Rotating sleeve base, the rotating sleeve base is rotatably sleeved on the outer wall of the delaying drainage base;

[0035] At least one group of twisted heat absorption sheets, the twisted heat absorption sheets are fixedly installed in the rotating sleeve base, and at least one group of auxiliary heat absorption grooves are formed in the twisted heat absorption sheets.

[0036] Preferably, the air-cooled linkage part includes:

[0037] Linkage turntable, rotatably arranged in the air-cooled negative pressure base, and one side of the linkage turntable is fixedly connected with the linkage tooth seat through a linkage rotating shaft;

[0038] At least one group of linkage convex blocks, fixedly installed on the linkage turntable, and the linkage convex blocks are used to drive the auxiliary cooling component.

[0039] Preferably, the auxiliary cooling component includes:

[0040] Auxiliary cooling base, corresponding to the heat dissipation conduction base, and at least one group of heat absorption electrode sheets are symmetrically arranged on one side of the auxiliary cooling base, and at least one group of heat dissipation electrode sheets are fixedly installed on the other side. A cooling storage battery is embedded in the auxiliary cooling base;

[0041] Cooling base support rod, detachably connected to the auxiliary cooling base, and the cooling support rod is rotatably connected to the side wall of the air-cooled negative pressure base;

[0042] Elastic sphere, fixedly installed at the end of the cooling base support rod.

[0043] Preferably, the built-in linkage part includes:

[0044] Second gear, rotatably arranged on the inner wall of the built-in box, and the second gear is fixedly connected with the linkage tooth seat;

[0045] At least one group of eccentric gears, the eccentric gears are meshed and driven with the second gear, and eccentric through grooves are formed in the eccentric gears;

[0046] Linkage cam movably embedded in the eccentric through groove, one side of the linkage cam is fixedly connected with a built-in linkage seat, the built-in linkage seat is slidably connected with the built-in box, and a linkage limit groove is formed in the built-in linkage seat;

[0047] At least one group of built-in limit seats, fixedly installed on the limit support bracket, the limit support bracket is fixedly installed in the immersion cavity, and the built-in limit seats are slidably connected with the linkage limit groove;

[0048] Second return spring, fixedly installed on the inner wall of the built-in linkage seat, and one end of the second return spring is fixedly connected with the built-in linkage seat;

[0049] A disturbing corrugated part fixedly connected to the end of the built-in linkage seat, which is used to disturb the oil in the immersion cavity and assist in dissipating heat from the transformer group in the immersion cavity.

[0050] Preferably, the disturbing corrugated part includes:

[0051] An arc-shaped disturbing seat detachably installed at the end of the built-in linkage seat;

[0052] At least one group of disturbing corrugated grooves opened in the arc-shaped disturbing seat, and

[0053] At least one group of disturbing corrugated rollers fixedly embedded in the arc-shaped disturbing seat for disturbing the oil in the immersion cavity.

[0054] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

[0055] In the embodiments of the present invention, a slow-flow cooling part and a synchronous linkage mechanism are provided. The synchronous linkage mechanism is driven by hot oil, so that the slow-flow linkage part and the built-in linkage part cooperate with each other. By extending the contact time between the oil and the cooling medium, the air-cooling forced mechanism is accelerated to dissipate heat, forming a "slow-flow - air-cooling" double efficiency increase. At the same time, the built-in linkage part mechanically disturbs the oil in the immersion cavity, thereby destroying the boundary layer and high and low temperature areas, and enhancing the convective heat transfer efficiency. It overcomes the problem that the existing transformer only guides the oil flow through the height difference of the oil channels (the middle oil channel is higher than other oil channels). If the oil flow rate is too fast, it is easy to cause insufficient heat dissipation. If the flow rate is too slow, the circulation efficiency is low, and the oil in the fuel tank cannot be actively disturbed, resulting in the formation of local low and high temperature areas in the fuel tank and poor heat dissipation uniformity.

[0056] In the embodiments of the present invention, an air-cooling forced mechanism is provided. By forcing the air flow through a negative pressure air pump, the outside air can be quickly pumped into the slow-flow cooler to achieve efficient heat exchange between the hot oil and the cold air, significantly improving the cooling efficiency. The auxiliary cooling component can further cool the hot air discharged from the heat dissipation conduction seat, realizing the synergistic effect of air cooling and electrode sheet refrigeration, improving the overall cooling efficiency. At the same time, the heat collection and drainage part can be linked with the air-cooling linkage part, so as to increase the contact area between the auxiliary cooling component and the hot air without additional power.

[0057] In the embodiment of the present invention, a slow-flow cooling part is provided. The slow-flow cooling part is composed of a slow-flow plunger, a conical piston seat, a support connecting rod, a first stop seat, and a second stop seat. The slow-flow plunger is combined with an inclined drainage plate. By sliding the plunger, the flow rate of the oil fluid is adjusted. The inclined drainage plate extends the path of the oil fluid, forming a "deceleration-diversion" effect to avoid uneven heat dissipation caused by too fast local flow rate. The conical piston seat and the spiral drainage pipe (a spiral structure with a gradually changing pitch) further extend the residence time of the oil fluid. The spiral structure uses centrifugal force to make the oil fluid fully contact the cooling wall surface, improving the heat exchange efficiency. The spiral gap design between the conical piston seat and the spiral drainage pipe can use the shear force generated by the flow of the oil fluid to break the sludge particles and avoid pipeline blockage. The second stop seat is connected to the slow-flow linkage part to realize the synchronous control of the oil fluid flow and the air-cooled forced heat dissipation.

[0058] In the embodiment of the present invention, a delay linkage part is provided. The delay linkage part is composed of an extrusion sliding seat, a driven torsion seat, and a first gear. The extrusion sliding seat, the driven torsion seat, and the first gear are linked and cooperated to be able to synchronously drive the linkage tooth seat, the air-cooled linkage part, and the built-in linkage part. And the first gear meshes with the linkage tooth seat intermittently, driving the built-in linkage part to generate non-periodic motion, effectively breaking the static balance of the oil fluid flow and avoiding the decrease in heat dissipation efficiency caused by continuous unidirectional flow in a local area. The extrusion sliding seat and the driven torsion seat are in sliding fit through a driving inclined groove, converting the axial motion into a rotational torque, and cooperating with the intermittent transmission of the first gear to form an axial-rotational composite motion mode, enhancing the multi-dimensional disturbance of the oil fluid in the immersion cavity.

[0059] In the embodiment of the present invention, an air-cooled linkage part and an auxiliary cooling component are provided. Through the interlocking transmission of the linkage tooth seat, the linkage turntable, and the elastic sphere, the mechanical energy of the oil fluid circulation is converted into the kinetic energy of the hot air disturbance. And the elastic sphere is periodically extruded by the linkage convex block, making the contact area between the hot air and the heat absorption electrode sheet change dynamically, forming a non-steady turbulent flow to strengthen the convective heat transfer and improving the air-cooled heat dissipation efficiency.

[0060] In the embodiment of the present invention, through the arc-shaped disturbance seat, the disturbance corrugated groove, and the disturbance corrugated roller of the disturbance corrugated part, the oil fluid in the immersion cavity can be quickly and irregularly disturbed, breaking the static balance of the oil fluid and preventing the formation of local high-temperature areas, significantly improving the heat dissipation efficiency. And the intermittent rotation of the linkage tooth seat drives the second gear and the eccentric gear to rotate. The eccentric gear acts on the built-in linkage seat through the linkage cam, realizing the irregular motion of the built-in linkage seat and further enhancing the disturbance effect of the oil fluid to ensure the uniformity and high efficiency of heat dissipation. Description of the Drawings

[0061] Figure 1 It is a schematic structural diagram of the built-in transformer provided by the present invention.

[0062] Figure 2 It is a three-dimensional structural schematic diagram of the built-in transformer provided by the present invention.

[0063] Figure 3 It is a side view of the built-in transformer provided by the present invention.

[0064] Figure 4 It is Figure 3 a sectional view taken along the line A-A of

[0065] Figure 5 It is a schematic diagram of the internal structure of the immersion cavity provided by the present invention.

[0066] Figure 6 It is a schematic diagram of the structure of the air-cooling forced mechanism provided by the present invention.

[0067] Figure 7 It is a schematic diagram of the combined structure of the auxiliary cooling component and the air-cooling linkage part provided by the present invention.

[0068] Figure 8 It is a schematic diagram of the combined structure of the auxiliary cooling component provided by the present invention.

[0069] Figure 9 It is a side view of the auxiliary cooling component provided by the present invention.

[0070] Figure 10 It is Figure 9 a sectional view taken along the line B-B of

[0071] Figure 11 It is a schematic diagram of the structure of the slow-flow cooler provided by the present invention.

[0072] Figure 12 It is a top view of the slow-flow cooler provided by the present invention.

[0073] Figure 13 It is Figure 12 a sectional view taken along the line C-C of

[0074] Figure 14 It is a schematic diagram of the structure of the heat collection and drainage part provided by the present invention.

[0075] Figure 15 It is a schematic diagram of the structure of the built-in linkage part provided by the present invention.

[0076] Figure 16 It is a side view of the built-in linkage part provided by the present invention.

[0077] In the figure: 1 - built-in transformer cabinet, 11 - built-in box, 111 - immersion cavity, 12 - cabinet base, 13 - upper cover plate, 14 - transformer bank, 2 - oil circulation pipeline, 21 - oil suction pipe, 22 - confluence ring pipe, 23 - connecting pipe, 24 - circulation water pump, 25 - return pipe, 26 - oil filling port, 27 - slow-flow cooler, 271 - external drainage cavity, 272 - delay drainage seat, 273 - oil overflow seat, 274 - anti-blocking drive cavity, 28 - slow-flow cooling section, 281 - slow-flow plunger, 282 - conical piston seat, 283 - spiral drainage pipe, 284 - support connecting rod, 285 - first return spring, 286 - second stop seat, 287 - slow-flow column groove, 288 - inclined drainage plate, 289 - first stop seat, 3 - air-cooling forced mechanism, 31 - negative pressure air pump, 32 - air-cooling negative pressure seat, 33 - air extraction seat, 34 - hot air discharge pipe, 35 - heat dissipation conduction seat, 36 - anti-blocking conduction pipe, 37 - auxiliary cooling component, 371 - auxiliary cooling seat, 372 - cooling seat support rod, 373 - heat dissipation electrode plate, 374 - cooling storage battery, 375 - elastic sphere, 376 - heat absorption electrode plate, 38 - heat collection drainage section, 381 - rotating sleeve seat, 382 - twisted heat absorption sheet, 383 - auxiliary heat absorption groove, 4 - synchronous linkage mechanism, 41 - linkage gear seat, 42 - built-in linkage section, 421 - second gear, 422 - eccentric gear, 423 - eccentric through groove, 424 - linkage cam, 425 - built-in linkage seat, 426 - limit support bracket, 427 - linkage limit groove, 428 - second return spring, 429 - built-in limit seat, 43 - disturbance corrugated section, 431 - arc disturbance seat, 432 - disturbance corrugated groove, 433 - disturbance corrugated roller, 44 - delay linkage section, 441 - first gear, 442 - return torsion spring, 443 - driven torsion seat, 444 - torsion spring support tray, 445 - extrusion sliding seat, 45 - air-cooling linkage section, 451 - linkage turntable, 452 - linkage convex block. Detailed implementation manners

[0078] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order.

[0079] Existing transformers only guide the flow of oil through the height difference of the oil ducts. If the oil flow rate is too fast, it is easy to cause insufficient heat dissipation. If the flow rate is too slow, the circulation efficiency is low, and the oil in the fuel tank cannot be actively disturbed, making it easy to form local low-temperature and high-temperature zones in the fuel tank, resulting in poor heat dissipation uniformity. To address the above problems, we propose an in-built transformer. Briefly, the transformer consists of a voltage transformation in-built cabinet 1, an oil circulation pipeline 2, an air-cooling forced mechanism 3, and a synchronous linkage mechanism 4. The voltage transformation in-built cabinet 1 includes an in-built box 11 and an upper cover plate 13. The oil circulation pipeline 2 includes at least one set of oil suction pipes 21, a slow-flow cooler 27, a confluence ring pipe 22, and a circulation water pump 24. A slow-flow cooling section 28 is provided in the slow-flow cooler 27. The slow-flow cooling section 28 is used to slow down and guide the flow of hot oil, and drive the synchronous linkage mechanism 4 based on the hot oil. The synchronous linkage mechanism 4 includes a linkage tooth seat 41, an in-built linkage section 42, a slow-flow linkage section, and an air-cooling linkage section 45. The linkage tooth seat 41 is rotatably arranged on the outer wall of the in-built box 11 and is respectively connected to the in-built linkage section 42, the slow-flow linkage section, and the air-cooling linkage section 45. During operation, when the transformer group 14 installed in the immersion cavity 111 conducts heat on the oil, in order to cool the oil to ensure the normal operation of the transformer group 14, the air-cooling forced mechanism 3 is started while the circulation water pump 24 is turned on, so that multiple sets of oil suction pipes 21 suck the hot oil into the oil suction pipes 21. The hot oil enters the slow-flow cooler 27 through the oil suction pipes 21. The slow-flow cooling section 28 in the slow-flow cooler 27 slows down and guides the flow of the hot oil. At the same time, the air-cooling forced mechanism 3 synchronously cools the hot oil rapidly by forced air cooling. Moreover, the air-cooling forced mechanism 3 and the hot oil act on the slow-flow cooling section 28 in a counteracting manner, so that the slow-flow cooling section 28 synchronously drives the slow-flow linkage section, causing the slow-flow linkage section to drive the linkage tooth seat 41 and the air-cooling linkage section 45 to operate. The linkage tooth seat 41 drives the in-built linkage section 42 to move, realizing the disturbance and stirring of the oil in the immersion cavity 111, thereby ensuring more uniform cooling of the transformer group 14 by the oil. The oil cooled in the slow-flow cooler 27 is then guided through the confluence ring pipe 22 and the circulation water pump 24, and thus flows back into the immersion cavity 111 to achieve the cooling of the transformer group 14. In the embodiment of the present invention, the slow-flow cooling section 28 and the synchronous linkage mechanism 4 are provided. The synchronous linkage mechanism 4 is driven by hot oil, enabling the slow-flow linkage section and the in-built linkage section 42 to cooperate. By extending the contact time between the oil and the cooling medium, the air-cooling forced mechanism 3 accelerates heat dissipation, forming a "slow-flow - air-cooling" double efficiency increase. At the same time, the in-built linkage section 42 mechanically disturbs the oil in the immersion cavity 111, thereby destroying the boundary layer and high and low temperature zones, and enhancing the convective heat transfer efficiency. It overcomes the problems of existing transformers that only guide the flow of oil through the height difference of the oil ducts (the middle oil duct is higher than other oil ducts), where too fast oil flow rate is easy to cause insufficient heat dissipation, too slow flow rate results in low circulation efficiency, and the oil in the fuel tank cannot be actively disturbed, making it easy to form local low-temperature and high-temperature zones in the fuel tank, resulting in poor heat dissipation uniformity.

[0080] It should be noted that the cooling medium immersed in the immersion cavity 111 can be natural fat vegetable oil with a high flash point, which belongs to Class K fire-resistant liquid, can meet the indoor fire protection requirements, is non-toxic and harmless to soil and water, and can be degraded by microorganisms. And this embodiment can be applied inside a wind power tower barrel. Since the space inside the wind power tower barrel is limited and the equipment layout is compact. The built-in transformer can be installed inside the tower barrel and integrated with the generator and other electrical equipment. This built-in design can reduce the floor area of the equipment inside the tower barrel, improve the space utilization rate, and is also beneficial to the electrical connection and energy transmission between the equipment. In addition. This embodiment can also be applied to distributed energy systems (such as gas turbine power generation systems, biomass power generation systems, etc.). The built-in transformer can be installed between the power generation equipment and the power consumption equipment of these distributed energy systems to convert the electric energy generated by the power generation equipment into a voltage suitable for industrial production power consumption equipment. This built-in design can improve the integration degree and energy utilization efficiency of the distributed energy system and reduce the loss of energy during the conversion and transmission process.

[0081] An embodiment of the present invention provides a built-in transformer, such as Figures 1-5 shown, the built-in transformer specifically includes:

[0082] A voltage transformation built-in cabinet 1, the voltage transformation built-in cabinet 1 includes an inner box 11 and an upper cover plate 13. The upper cover plate 13 is fixedly installed inside the inner box 11. An immersion cavity 111 is provided in the inner box 11. The bottom of the inner box 11 is fixed on a cabinet base 12, and the inner box 11 is fixedly installed by means of fastening bolts or welding. The inner box 11 and the upper cover plate 13 are fixedly connected by means of fastening bolts and a sealing flange. And at least one set of transformer groups 14 are provided in the inner box 11. The transformer groups 14 are fixedly installed by means of riveting or bolt connection. The transformer groups 14 are composed of structures such as iron cores, windings, insulating covers, tap switches, etc. Multiple groups of heat sinks are respectively provided on the front and rear outer walls of the inner box 11;

[0083] The oil circulation pipeline 2 includes at least one set of oil suction pipes 21, a slow-flow cooler 27, a confluence ring pipe 22, and a circulation water pump 24. The circulation water pump 24 is installed on the surface of the upper cover plate 13. The oil suction pipes 21 are detachably installed on the side walls of the built-in box 11. The slow-flow cooler 27 is arranged on one side of the built-in box 11, and both ends are detachably connected to the confluence ring pipe 22 and the oil suction pipes 21 respectively. The oil suction pipes 21 are circumferentially arranged on the left and right side walls of the built-in box 11. The oil suction pipes 21 and the slow-flow cooler 27 are correspondingly arranged, and the number can be 3 - 6 groups. The oil suction pipes 21 are fixedly installed by means of buckles or plug-ins. The confluence ring pipe 22 is a hollow annular pipe inside. The confluence ring pipe 22 is connected to the circulation water pump 24 through a connecting pipe 23. The circulation water pump 24 is also connected with an oil injection port 26. The oil injection port 26 is used to supplement oil into the immersion cavity 111. The circulation water pump 24 is fixedly installed on the surface of the upper cover plate 13 by means of a clamp or a buckle. The drain port of the circulation water pump 24 is fixedly connected with a return pipe 25. The return pipe 25 is communicated with the immersion cavity 111. A slow-flow cooling part 28 is arranged in the slow-flow cooler 27. The slow-flow cooling part 28 is used for slowly stopping and guiding the hot oil, and driving the synchronous linkage mechanism 4 based on the hot oil.

[0084] The air-cooling forced mechanism 3 is symmetrically arranged on both sides of the built-in box 11 and is used for air-cooling the hot oil in the slow-flow cooler 27 without contact.

[0085] The synchronous linkage mechanism 4 is arranged inside the air-cooling forced mechanism 3 and is connected to the slow-flow cooling part 28. It is used to disturb the oil in the immersion cavity 111 and cooperate with the air-cooling forced mechanism 3 in a linkage manner. The synchronous linkage mechanism 4 includes a linkage tooth seat 41, an internal linkage part 42, a slow-flow linkage part, and an air-cooling linkage part 45. The linkage tooth seat 41 is rotatably arranged on the outer wall of the built-in box 11 and is respectively connected to the internal linkage part 42, the slow-flow linkage part, and the air-cooling linkage part 45. The slow-flow linkage part is installed in the slow-flow cooler 27.

[0086] It should be noted that the synchronous linkage mechanism 4 is composed of a linkage tooth seat 41, an internal linkage part 42, a slow-flow linkage part, and an air-cooling linkage part 45. Among them, the linkage mechanism is driven by pumping hot oil by the circulation water pump 24 and ensuring the negative pressure drive of the air-cooling negative pressure seat 32 by the negative pressure air pump 31 in the air-cooling forced mechanism 3 (the air-cooling negative pressure seat 32 is communicated with the bottom of the slow-flow cooler 27), so as to drive the slow-flow linkage part to move. The slow-flow linkage part drives the linkage tooth seat 41 to operate. The linkage tooth seat 41 respectively drives the air-cooling linkage part 45 to quickly cool the hot air flow and the internal linkage part 42 to quickly disturb the oil in the immersion cavity 111, so as to dynamically couple the air-cooling forced mechanism 3 with the oil circulation pipeline 2 and realize the linkage matching of the air-cooling efficiency and the oil disturbance.

[0087] In this embodiment, during operation, when the transformer bank 14 installed in the immersion cavity 111 conducts heat to the oil fluid, in order to cool the oil fluid to ensure the normal operation of the transformer bank 14, the air-cooling forced mechanism 3 is started while the circulating water pump 24 is turned on, so that multiple oil suction pipes 21 suck the hot oil fluid into the oil suction pipes 21. The hot oil fluid enters the slow-flow cooler 27 through the oil suction pipes 21. The slow-flow cooling part 28 in the slow-flow cooler 27 slowly stops and guides the hot oil fluid. At the same time, the air-cooling forced mechanism 3 synchronously cools the hot oil fluid rapidly by air cooling. Moreover, the air-cooling forced mechanism 3 and the hot oil fluid act on the slow-flow cooling part 28 in a cooperative and reactionary manner, so that the slow-flow cooling part 28 synchronously drives the slow-flow linkage part, and the slow-flow linkage part drives the linkage tooth seat 41 and the air-cooling linkage part 45 to operate. The linkage tooth seat 41 drives the built-in linkage part 42 to move, realizing the disturbance and stirring of the oil fluid in the immersion cavity 111, thereby ensuring more uniform cooling of the transformer bank 14 by the oil fluid. The oil fluid in the slow-flow cooler 27 is cooled and then diverted through the confluence ring pipe 22 and the circulating water pump 24, and thus flows back into the immersion cavity 111 to realize the cooling of the transformer bank 14.

[0088] In the embodiment of the present invention, a slow-flow cooling part 28 and a synchronous linkage mechanism 4 are provided. The synchronous linkage mechanism 4 is driven by the hot oil fluid, so that the slow-flow linkage part and the built-in linkage part 42 act in cooperation. By extending the contact time between the oil fluid and the cooling medium, the air-cooling forced mechanism 3 is accelerated in heat dissipation, forming a "slow-flow - air-cooling" double efficiency increase. Moreover, the built-in linkage part 42 mechanically disturbs the oil fluid in the immersion cavity 111, thereby destroying the boundary layer and the high and low temperature zones, and enhancing the convective heat transfer efficiency. It overcomes the problem that the existing transformer only guides the oil fluid to flow through the height difference of the oil ducts (the middle oil duct is higher than other oil ducts). If the oil fluid flow rate is too fast, heat dissipation is likely to be insufficient; if the flow rate is too slow, the circulation efficiency is low, and the oil fluid in the fuel tank cannot be actively disturbed, so that local low temperature zones and high temperature zones are easily formed in the fuel tank, and the heat dissipation uniformity is poor.

[0089] In a further preferred embodiment of the present invention, as Figure 1 and Figure 6 shown, the air-cooling forced mechanism 3 includes:

[0090] An air-cooling negative pressure seat 32, which is detachably installed on the side wall of the built-in box 11. The air-cooling negative pressure seat 32 is hollow inside and is fixedly installed with at least one set of heat dissipation conduction seats 35. One end of the heat dissipation conduction seat 35 away from the air-cooling negative pressure seat 32 extends into the slow-flow cooler 27. Among them, the air-cooling negative pressure seat 32 can be a rectangular seat or a circular seat with a hollow interior. The air-cooling negative pressure seat 32 is fixedly installed on the outer side wall of the built-in box 11 by means of fastening bolts or buckles. The number of the heat dissipation conduction seats 35 is the same as the number of the slow-flow coolers 27.

[0091] At least one set of air extraction seats 33, which are detachably installed on the slow-flow cooler 27 and are in communication with the slow-flow cooler 27. The air extraction seats 33 are used to draw external air into the slow-flow cooler 27, so as to achieve rapid heat exchange. The air extraction seats 33 are connected to the slow-flow cooler 27 by means of buckles or threads;

[0092] A negative pressure air pump 31, which is fixedly installed outside the built-in box 11 and is in communication with the air-cooled negative pressure seat 32. A hot air discharge pipe 34 is detachably installed at the exhaust port of the negative pressure air pump 31. The negative pressure air pump 31 is fixedly installed by means of a clamp or bolts. The negative pressure air pump 31 can be a high-vacuum large-flow brushless air pump or a high-efficiency diaphragm air pump.

[0093] At least one set of anti-blocking conduction pipes 36, which are installed on the air-cooled negative pressure seat 32. One end of the anti-blocking conduction pipe 36 is in communication with the air-cooled negative pressure seat 32, and the other end extends to the bottom of the slow-flow cooler 27. The anti-blocking conduction pipe 36 is arranged corresponding to the slow-flow cooler 27, and the anti-blocking conduction pipe 36 can prevent the slow-flow cooler 27 from being blocked, so as to ensure the normal reflux of the oil liquid;

[0094] An auxiliary cooling component 37, as Figure 7 shown, is arranged corresponding to the heat dissipation conduction seat 35 and is connected to the air-cooled linkage part 45, and is used for assisting in cooling the hot air discharged from the heat dissipation conduction seat 35. The auxiliary cooling component 37 is arranged corresponding to the port of the heat dissipation conduction seat 35, so as to be able to quickly assist in cooling the hot air and realize the synergistic effect of air cooling and electrode sheet refrigeration;

[0095] A heat collection and drainage part 38, which is arranged in the slow-flow cooler 27 and is used for cooling and treating the hot oil liquid in the slow-flow cooler 27.

[0096] In the embodiment of the present invention, an air-cooled forced mechanism 3 is provided. By forcing the air flow through the negative pressure air pump 31, the external air can be quickly drawn into the slow-flow cooler 27, so as to realize the efficient heat exchange between the hot oil liquid and the cold air, significantly improve the cooling efficiency, and the auxiliary cooling component 37 can further cool the hot air discharged from the heat dissipation conduction seat 35, realize the synergistic effect of air cooling and electrode sheet refrigeration, improve the overall cooling efficiency, and at the same time, the heat collection and drainage part 38 can be linked with the air-cooled linkage part 45, so as to increase the contact area between the auxiliary cooling component 37 and the hot air without additional power.

[0097] In a further preferred embodiment of the present invention, as Figures 11-13 shown, the slow-flow cooler 27 includes:

[0098] The flow-delay drainage seat 272 is arranged inside the flow-slowing cooler 27. One end of the flow-delay drainage seat 272 is communicated with the oil suction pipe 21. An outer drainage cavity 271 is formed by surrounding between the flow-delay drainage seat 272 and the flow-slowing cooler 27. The outer drainage cavity 271 is communicated with the air extraction seat 33. And the heat-collecting drainage part 38 is arranged inside the outer drainage cavity 271. The flow-delay drainage seat 272 is a circular seat or a rectangular seat with a hollow interior. The flow-delay drainage seat 272 is fixedly assembled inside the flow-slowing cooler 27 by welding or riveting. And the outer drainage cavity 271 can be of an annular groove or an annular cavity structure.

[0099] The oil overflow seat 273 is arranged inside the flow-slowing cooler 27 and is communicated with the flow-delay drainage seat 272. The side wall of the oil overflow seat 273 is communicated with the confluence ring pipe 22 and is used for discharging the cooled hot oil. The oil overflow seat 273 can be a circular seat or a circular pipe structure with a hollow interior. An overflow groove is formed in the side wall of the oil overflow seat 273. The overflow groove is communicated with the confluence ring pipe 22 through a conduit.

[0100] The anti-blocking drive cavity 274 is arranged at the bottom of the flow-slowing cooler and is communicated with the anti-blocking conduction pipe 36. The flow-slowing linkage part is arranged inside the anti-blocking drive cavity 274.

[0101] In this embodiment, the anti-blocking drive cavity 274 is a circular cavity structure with a hollow interior. The bottom of the anti-blocking drive cavity 274 is communicated with the anti-blocking conduction pipe 36 through a conduit. Thus, the negative pressure of the negative pressure air pump 31 can be used to push the flow-slowing cooling part 28 to move, so as to drive the flow-slowing linkage part and avoid the problems of oil blockage and poor backflow in the flow-slowing cooler 27.

[0102] In a further preferred embodiment of the present invention, as Figures 13-14 shown, the flow-slowing cooling part 28 includes:

[0103] The flow-slowing plunger 281 is arranged inside the flow-delay drainage seat 272 and is slidably connected with the flow-delay drainage seat 272. At least one group of flow-slowing column grooves 287 is formed in the flow-slowing plunger 281. At least one group of inclined drainage plates 288 is installed in the flow-slowing column grooves 287. The flow-slowing plunger 281 can be a cylinder made of an insulating elastic material. Multiple groups of anti-slip strips or anti-slip rollers can be arranged on the side wall of the flow-slowing plunger 281. Multiple groups of flow-slowing column grooves are circumferentially formed inside the flow-slowing plunger 281 to allow the oil to pass through. The inclined drainage plates 288 are fixedly installed by snap connection or integral connection. The number of the inclined drainage plates 288 is 3-9 groups. Multiple groups of anti-slip grooves can also be formed on the surface of the inclined drainage plates 288.

[0104] The conical piston seat 282 fixedly connected to the slow-flow plunger 281, with both ends of the conical piston seat 282 extending into the slow-drainage seat 272 and the oil overflow seat 273 respectively, and being slidably connected to the oil overflow seat 273. A spiral drainage pipe 283 is fixedly sleeved on the conical piston seat 282. The slow-flow plunger 281 is fixedly connected to the conical piston seat 282 by means of insertion or threaded connection. The conical piston seat 282 can be of a sharp conical or frustum-shaped structure, while the spiral drainage pipe 283 is of a spiral structure with one end narrow and one end wide. The spiral drainage pipe 283 can be fixedly installed on the conical piston seat 282 by means of snap-fastening or welding;

[0105] The support connecting rod 284 is fixedly installed inside the conical piston seat 282, and the end of the support connecting rod 284 away from the conical piston seat 282 slidably extends into the anti-blocking drive cavity 274 and is fixedly connected to a second stop seat 286. The second stop seat 286 is connected to the slow-flow linkage part. The support connecting rod 284 is fixedly connected to the conical piston seat 282 by means of riveting or clamping, and both the first stop seat 289 and the second stop seat 286 are arranged inside the anti-blocking drive cavity 274;

[0106] The first stop seat 289 is fixedly sleeved on the outer wall of the support connecting rod 284 and is slidably arranged inside the anti-blocking drive cavity 274. Both the first stop seat 289 and the second stop seat 286 can be of a circular plate or circular seat structure.

[0107] The first return spring 285 is fixedly embedded inside the anti-blocking drive cavity 274, and one end of the first return spring 285 is fixedly connected to the first stop seat 289. The first return spring 285 is fixedly embedded inside the anti-blocking drive cavity 274 by means of snap-fastening or mortise joint.

[0108] When the circulating water pump 24 and the negative pressure fan are started synchronously, the circulating water pump 24 pumps the hot oil liquid into the suction oil pipe 21. The hot oil liquid enters the slow-drainage seat 272, pushing the slow-flow plunger 281, the conical piston seat 282, the support connecting rod 284, the first stop seat 289, and the second stop seat 286 to move along the central axis of the slow-flow cooler 27. The slow-flow plunger 281 and the inclined drainage plate 288 perform a primary slow-flow treatment on the hot oil liquid, and then the spiral drainage pipe 283 and the conical piston seat 282 perform a secondary slow-flow treatment on the hot oil liquid, so that the heat collection and drainage part 38 can fully absorb the heat of the slow-flowed hot oil liquid. At the same time, the hot oil liquid can drive the second stop seat 286 and the slow-flow linkage part to move under the dual drive of the circulating water pump 24 and the negative pressure fan, thereby realizing the synchronous drive of the air-cooled linkage part 45, the auxiliary cooling component 37, the linkage gear seat 41, and the built-in linkage part 42.

[0109] In the embodiment of the present invention, a slow-flow cooling part 28 is provided. The slow-flow cooling part 28 is composed of a slow-flow plunger 281, a conical piston seat 282, a support connecting rod 284, a first stop seat 289, and a second stop seat 286. The slow-flow plunger 281 is combined with an inclined drainage plate 288, and the oil flow rate is adjusted by the sliding of the plunger. The inclined drainage plate 288 extends the oil path to form a "deceleration-diversion" effect, avoiding uneven heat dissipation caused by too fast local flow rate. The conical piston seat 282 and the spiral drainage pipe 283 (a spiral structure with a gradually changing pitch) further extend the oil residence time. The spiral structure uses centrifugal force to make the oil fully contact the cooling wall surface, improving the heat exchange efficiency. The spiral gap design between the conical piston seat 282 and the spiral drainage pipe 283 can use the shear force generated by the oil flow to break the sludge particles and avoid pipeline blockage. The second stop seat 286 is connected to the slow-flow linkage part to realize the synchronous control of oil flow and air-cooled forced heat dissipation.

[0110] In a further preferred embodiment of the present invention, as Figures 11-12 shown, the delay linkage part 44 includes:

[0111] An extrusion sliding seat 445, fixedly installed on the second stop seat 286 and slidably connected to the inner wall of the anti-blocking drive cavity 274. The extrusion sliding seat 445 can be an arc-shaped seat or a ring-shaped seat with a hollow interior;

[0112] A driven torsion seat 443, rotatably arranged in the anti-blocking drive cavity 274 and slidably connected to the extrusion sliding seat 445. Both the driven torsion seat 443 and the extrusion sliding seat 445 are provided with drive inclined grooves. The surfaces of the drive inclined grooves are polished. The driven torsion seat 443 and the extrusion sliding seat 445 can be fitted into a circular seat or a cylindrical structure. The driven torsion seat 443 is fixedly connected to the first gear 441 by means of a buckle or riveting;

[0113] A first gear 441 fixedly connected to the driven torsion seat 443. The first gear 441 meshes with and drives the linkage tooth seat 41. The first gear 441 can be an incomplete gear with one-third or one-fourth teeth. Setting it as an incomplete gear can ensure that the first gear 441 intermittently contacts the linkage tooth seat 41, further improving the irregularity of the operation of the linkage tooth seat 41 driving the built-in linkage part 42, helping to break the dynamic balance of the oil flow in the immersion cavity 111, and also avoiding the problem of the linkage tooth seat 41 being stuck when multiple first gears 441 drive the linkage tooth seat 41 to rotate;

[0114] A torsion spring bearing tray 444 is fixedly embedded in the anti-blocking driving chamber 274, and a reset torsion spring 442 is fixedly embedded in the torsion spring bearing tray 444. One end of the reset torsion spring 442 is fixedly connected to the driven torsion seat 443. The torsion spring bearing tray 444 is fixedly assembled in the anti-blocking driving chamber 274 with fastening bolts. The setting of the reset torsion spring 442 can ensure that the rotating first gear 441 returns to its initial position without being affected by external force. As a replaceable device, a spring telescopic rod or a hydraulic telescopic rod can also be used to replace the reset torsion spring 442.

[0115] In the embodiment of the present invention, a delay linkage part 44 is provided, and the delay linkage part 44 is composed of an extrusion slide 445, a driven torsion seat 443, and a first gear 441. The extrusion slide 445, the driven torsion seat 443, and the first gear 441 are linked and coordinated to achieve synchronous driving of the linkage gear seat 41, the air-cooling linkage part 45, and the built-in linkage part 42, and the first gear 441 is intermittently meshed with the linkage gear seat 41 to drive the built-in linkage part 42 to produce non-periodic motion, effectively breaking the static balance of the oil flow, and avoiding the decrease in heat dissipation efficiency due to continuous unidirectional flow in local areas. The extrusion slide 445 and the driven torsion seat 443 slide in contact through the driving inclined groove to convert the axial motion into a rotational torque, and cooperate with the intermittent transmission of the first gear 441 to form an axial-rotational compound motion mode, thereby enhancing the multi-dimensional disturbance of the oil in the immersion chamber 111.

[0116] In a further preferred embodiment of the present invention, Figure 14 As shown, the heat collecting and draining portion 38 includes:

[0117] A rotating sleeve 381, the rotating sleeve 381 is rotatably sleeved on the outer wall of the delay drainage seat 272, and the rotating sleeve 381 is rotatably sleeved on the outer wall of the delay drainage seat 272 through a bearing or a roller;

[0118] At least one set of twisted heat absorbing sheets 382 is fixedly installed in the rotating sleeve 381 , and at least one set of auxiliary heat absorbing grooves 383 is defined in the twisted heat absorbing sheets 382 .

[0119] In this embodiment, the twisted heat absorption sheet 382 can be a rectangular sheet, a fan-shaped sheet or a circular sheet structure with a twist degree of 20-120°. The twisted heat absorption sheet 382 is circumferentially fixed on the rotating sleeve 381 by snapping or plugging, and the auxiliary heat absorption groove 383 can be a circular groove, a square groove, or a serrated groove structure.

[0120] In the embodiment of the present invention, a heat collection and drainage part 38 is provided. The rotating sleeve base 381 rotates freely through a bearing or roller, driving the internal twisted heat absorption sheet 382 to rotate synchronously, forming an active eddy current effect, and then fully absorbing the hot air flow in the external drainage cavity 271. The twisted heat absorption sheet 382 greatly increases the heat dissipation surface area through a three-dimensional curved surface design (such as spiral twisting, wavy folds), and at the same time guides the flow of hot air, accelerating the rapid heat exchange between the external drainage cavity 271 and the delay drainage seat 272.

[0121] In a further preferred embodiment of the present invention, as Figures 7-8 shown, the air-cooled linkage part 45 includes:

[0122] A linkage turntable 451, rotatably arranged in the air-cooled negative pressure seat 32, and one side of the linkage turntable 451 is fixedly connected to the linkage tooth seat 41 through a linkage rotating shaft. The linkage turntable 451 is rotationally connected to the air-cooled negative pressure seat 32 through a bearing or roller;

[0123] At least one group of linkage convex blocks 452, fixedly installed on the linkage turntable 451, and the linkage convex blocks 452 are used to drive the auxiliary cooling component 37. The linkage convex blocks 452 can be in the structure of an arc block, a wave block, or a pointed cone block. The linkage cam 424 is fixedly installed on the linkage turntable 451 by means of clamping or riveting.

[0124] In this embodiment, as Figures 8-10 shown, the auxiliary cooling component 37 includes:

[0125] An auxiliary cooling seat 371, corresponding to the heat dissipation conduction seat 35, and at least one group of heat absorption electrode sheets 376 are symmetrically arranged on one side of the auxiliary cooling seat 371, and at least one group of heat dissipation electrode sheets 373 are fixedly installed on the other side. A cooling storage battery 374 is embedded in the auxiliary cooling seat 371. The auxiliary cooling seat 371 can be in the structure of a round seat or a rectangular seat, and the heat absorption electrode sheets 376 can be made of N-type semiconductor material, which absorbs heat (cold end) when current passes through, and can quickly cool the high-temperature hot air (such as 80 °C) discharged from the heat dissipation conduction seat 35 to below 40 °C. The heat dissipation electrode sheets 373 can be made of P-type semiconductor material, which can discharge the absorbed heat through heat dissipation fins or forced air cooling, forming a "heat absorption - heat release" closed loop.

[0126] A cooling seat support rod 372, detachably connected to the auxiliary cooling seat 371, and the cooling support rod is rotationally connected to the side wall of the air-cooled negative pressure seat 32. The cooling seat support rod 372 is detachably connected to the auxiliary cooling seat 371 by means of plugging or screwing, and the cooling support rod is rotationally connected to the side wall of the air-cooled negative pressure seat 32 through a bearing;

[0127] The elastic sphere 375 is fixedly installed at the end of the cooling seat support rod 372. The elastic sphere 375 is connected to the end of the cooling seat support rod 372 by plugging or riveting. The elastic sphere 375 can be a balloon structure with a hollow interior. The elastic sphere 375 can be squeezed by the linkage bump 452, thereby driving the auxiliary cooling seat 371 to swing, further increasing the contact area with the hot air flow.

[0128] When the hot oil liquid drives the second stop seat 286 and the slow-flow linkage part under the dual drive of the circulating water pump 24 and the negative pressure fan, the second stop seat 286 drives the extrusion slide seat 445 to slide. Then, the extrusion slide seat 445 pushes the driven torsion seat 443 and the first gear 441 to rotate. The first gear 441 drives the linkage tooth seat 41 to rotate. The linkage tooth seat 41 drives the linkage turntable 451 to rotate intermittently, so that the linkage bump 452 on the linkage turntable 451 intermittently squeezes the elastic sphere 375, causing the elastic sphere 375 to drive the cooling support rod and the auxiliary cooling seat 371 to swing, further strengthening the cooling effect on the hot air discharged from the heat dissipation conduction seat 35, and thus realizing the synchronous drive of the air-cooled linkage part 45, the auxiliary cooling component 37, the linkage tooth seat 41, and the built-in linkage part 42.

[0129] In the embodiment of the present invention, an air-cooled linkage part 45 and an auxiliary cooling component 37 are provided. Through the interlocking transmission of the linkage tooth seat 41, the linkage turntable 451, and the elastic sphere 375, the mechanical energy of the oil liquid circulation is converted into the kinetic energy of hot air disturbance. And the elastic sphere 375 is periodically squeezed by the linkage bump 452, making the contact area between the hot air and the heat absorption electrode sheet 376 change dynamically, forming unsteady turbulence to strengthen convective heat transfer and improving the air-cooled heat dissipation efficiency.

[0130] In a further preferred embodiment of the present invention, as Figures 15-16 shown, the built-in linkage part 42 includes:

[0131] The second gear 421 is rotatably arranged on the inner wall of the built-in box 11, and the second gear 421 is fixedly connected to the linkage tooth seat 41. The second gear 421 is rotatably connected to the built-in box 11 by bearings or rollers. The second gear 421 is fixedly connected to the linkage tooth seat 41 through a connecting rod, and a sealing flange ring is sleeved on the outer wall of the connecting rod;

[0132] At least one set of eccentric gears 422, the eccentric gears 422 are meshed and driven with the second gear 421, and an eccentric through groove 423 is opened in the eccentric gear 422. The eccentric through groove 423 is opened in the eccentric area of the eccentric gear 422. The eccentric through groove 423 can be a circular groove, a square groove, or a polygonal groove structure;

[0133] A linkage cam 424 is movably embedded in the eccentric through groove 423, and one side of the linkage cam 424 is fixedly connected with a built-in linkage seat 425, the built-in linkage seat 425 is slidably connected to the built-in box 11, and a linkage limiting groove 427 is provided in the built-in linkage seat 425. The linkage cam 424 is fixedly connected to the built-in linkage seat 425 by means of a buckle or a bolt. At the same time, in order to position the eccentric gear 422, a positioning plate or a positioning ring can be provided at one end of the linkage cam 424 to prevent the eccentric gear 422 from shaking.

[0134] At least one set of built-in limit seats 429 is fixedly mounted on the limit support bracket 426, and the limit support bracket 426 is fixedly mounted in the immersion chamber 111. The built-in limit seats 429 are slidably connected with the linkage limit groove 427. The built-in limit seats 429 can be rectangular seats or round seats with a hollow interior, and the linkage limit groove 427 can be a rectangular groove or a square groove;

[0135] The second return spring 428 is fixedly installed on the inner wall of the built-in linkage seat 425. One end of the second return spring 428 is fixedly connected to the built-in linkage seat 425. The setting of the second return spring 428 ensures that the built-in linkage seat 425 and the eccentric gear 422 have a stable restoring force, thereby avoiding the deviation of the built-in linkage shaft and the eccentric gear 422.

[0136] The disturbance corrugated portion 43 is fixedly connected to the end of the built-in linkage seat 425 , and is used to disturb the oil in the immersion chamber 111 and assist the heat dissipation of the transformer group 14 in the immersion chamber 111 .

[0137] In this embodiment, the disturbance ripple portion 43 includes:

[0138] The arc-shaped disturbance seat 431 is detachably mounted on the end of the built-in linkage seat 425, and the arc-shaped disturbance seat 431 is fixedly connected to the end of the built-in linkage seat 425 by snap-fitting or riveting;

[0139] at least one set of disturbance corrugation grooves 432, the disturbance corrugation grooves 432 are opened in the arc-shaped disturbance seat 431, and

[0140] At least one set of disturbance corrugated rollers 433 is fixedly embedded in the arc-shaped disturbance seat 431 for disturbing the oil in the immersion chamber 111. The disturbance toggle grooves are horizontally arranged in the arc-shaped disturbance seat 431. The disturbance corrugated rollers 433 are fixed in the arc-shaped disturbance seat 431 by snapping or riveting.

[0141] When the linkage gear seat 41 rotates intermittently, the linkage gear seat 41 can drive the second gear 421 to rotate, so that the second gear 421 drives the eccentric gear 422 to rotate. The linkage cam 424 acts on the eccentric gear 422, so that the eccentric gear 422 closely meshes with the second gear 421 and can drive the built-in linkage seat 425, the arc-shaped disturbance seat 431, the disturbance corrugated groove 432, and the disturbance corrugated roller 433 to quickly and irregularly disturb the oil in the immersion cavity 111. In the embodiment of the present invention, through the arc-shaped disturbance seat 431, the disturbance corrugated groove 432, and the disturbance corrugated roller 433 of the disturbance corrugated part 43, the oil in the immersion cavity 111 can be quickly and irregularly disturbed, breaking the static balance of the oil, preventing the formation of local high-temperature areas, significantly improving the heat dissipation efficiency. Moreover, the intermittent rotation of the linkage gear seat 41 drives the second gear 421 and the eccentric gear 422 to rotate. The eccentric gear 422 acts on the built-in linkage seat 425 through the linkage cam 424, realizing the irregular movement of the built-in linkage seat 425, further enhancing the disturbance effect of the oil, and ensuring the uniformity and high efficiency of heat dissipation.

[0142] In summary, the present invention provides an in-built transformer. When working, the transformer group 14 installed in the immersion cavity 111 conducts heat to the oil during operation. In order to cool the oil to ensure the normal operation of the transformer group 14, the air-cooling forced mechanism 3 is started while the circulating water pump 24 is turned on, so that multiple oil suction pipes 21 suck the hot oil into the oil suction pipes 21. The hot oil enters the slow-flow cooler 27 through the oil suction pipes 21. The slow-flow cooling part 28 in the slow-flow cooler 27 slowly stops and guides the hot oil. At the same time, the air-cooling forced mechanism 3 synchronously cools the hot oil quickly by forced air cooling. Moreover, the air-cooling forced mechanism 3 and the hot oil act on the slow-flow cooling part 28 in a cooperative and reactionary manner, so that the slow-flow cooling part 28 synchronously drives the slow-flow linkage part, and the slow-flow linkage part drives the linkage gear seat 41 and the air-cooling linkage part 45 to operate. The linkage gear seat 41 drives the built-in linkage part 42 to move, realizing the disturbance and stirring of the oil in the immersion cavity 111, thereby ensuring more uniform cooling of the transformer group 14 by the oil. The oil in the slow-flow cooler 27 is cooled and then diverted through the confluence ring pipe 22 and the circulating water pump 24, and thus flows back into the immersion cavity 111 to realize the cooling of the transformer group 14.

[0143] In the embodiments of the present invention, a slow-flow cooling part 28 and a synchronous linkage mechanism 4 are provided. The synchronous linkage mechanism 4 is driven by hot oil liquid, so that the slow-flow linkage part and the built-in linkage part 42 act synergistically. By extending the contact time between the oil liquid and the cooling medium, the air-cooling forced mechanism 3 is accelerated to dissipate heat, forming a "slow-flow - air-cooling" double efficiency increase. At the same time, the built-in linkage part 42 mechanically disturbs the oil liquid in the immersion cavity 111, thereby destroying the boundary layer and high and low temperature zones, and enhancing the convective heat transfer efficiency. It overcomes the problem that the existing transformer only guides the oil liquid to flow through the height difference of the oil channels (the middle oil channel is higher than other oil channels). If the oil liquid flow rate is too fast, it is easy to cause insufficient heat dissipation; if the flow rate is too slow, the circulation efficiency is low, and the oil liquid in the fuel tank cannot be actively disturbed, resulting in the formation of local low and high temperature zones in the fuel tank and poor heat dissipation uniformity.

[0144] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present invention is not limited by the described action sequence, because according to the present invention, certain steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0145] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict, make combinations, additions, deletions or other adjustments to the features in the embodiments of the present invention according to the situation without creative work, so as to obtain different technical solutions that essentially do not deviate from the concept of the present invention. These technical solutions also belong to the scope of protection of the present invention.

Claims

1. A built-in transformer, comprising: The transformer built-in cabinet includes a built-in box and an upper cover plate, the upper cover plate is fixedly installed in the built-in box, and an immersion chamber is provided in the built-in box; An oil circulation pipeline, characterized in that, It includes at least one group of oil extraction pipes, slow flow coolers, flow collecting ring pipes, and circulating water pumps. The circulating water pump is installed on the surface of the upper cover plate. The oil extraction pipes are detachably installed on the side wall of the built-in box. The slow flow coolers are arranged on one side of the built-in box, and the two ends are detachably connected to the flow collecting ring pipes and the oil extraction pipes respectively. The slow flow coolers are provided with slow flow cooling parts, which are used to slowly stop and guide the hot oil, and drive the synchronous linkage mechanism based on the hot oil. The air cooling forced mechanism is symmetrically arranged on both sides of the built-in box, and is used for contact-free air cooling of the hot oil in the slow-flow cooler; The synchronous linkage mechanism is arranged on the inner side of the air-cooling forced mechanism and is connected to the slow-flow cooling part. It is used to disturb the oil in the immersion chamber and cooperate with the air-cooling forced mechanism. The synchronous linkage mechanism includes a linkage gear seat, a built-in linkage part, a slow-flow linkage part and an air-cooling linkage part. The linkage gear seat is rotatably arranged on the outer wall of the built-in box and is respectively connected to the built-in linkage part, the slow-flow linkage part and the air-cooling linkage part. The slow-flow linkage part is installed in the slow-flow cooler.

2. The built-in transformer according to claim 1, wherein: The air cooling forcing mechanism comprises: The air-cooled negative pressure seat is detachably mounted on the side wall of the built-in box, the air-cooled negative pressure seat is hollow inside, and at least one set of heat dissipation conductive seats is fixedly mounted thereon, and one end of the heat dissipation conductive seat away from the air-cooled negative pressure seat extends into the slow-flow cooler; At least one set of exhaust seats, which can be detachably mounted on the slow-flow cooler and are in communication with the slow-flow cooler; The negative pressure air pump is fixedly installed outside the built-in box and is connected to the air-cooled negative pressure seat. The negative pressure air pump exhaust port is detachably equipped with a hot air exhaust pipe; At least one set of anti-blocking conducting pipes, the anti-blocking conducting pipes are installed on the air-cooled negative pressure seat, one end of the anti-blocking conducting pipes is connected to the air-cooled negative pressure seat, and the other end extends to the bottom of the slow flow cooler; The auxiliary cooling component is arranged corresponding to the heat dissipation conductive seat and is connected to the air cooling linkage part, and is used for assisting the heat dissipation of the hot air discharged from the heat dissipation conductive seat; The heat collecting and draining part is arranged in the slow flow cooler and is used for cooling the hot oil in the slow flow cooler.

3. The built-in transformer according to claim 2, wherein: The slow flow cooler comprises: The delayed drainage seat is arranged in the slow flow cooler, one end of the delayed drainage seat is communicated with the oil extraction pipe, the delayed drainage seat and the slow flow cooler surround an external drainage cavity, the external drainage cavity is communicated with the air extraction seat, and the heat collection drainage part is arranged in the external drainage cavity; The oil overflow seat is arranged in the slow flow cooler and is connected to the delayed drainage seat, and the side wall of the oil overflow seat is connected to the confluence ring pipe for discharging the cooled hot oil; The anti-blocking driving chamber is arranged at the bottom of the delay cooler and is communicated with the anti-blocking conducting pipe. The slow-flow linkage part is arranged in the anti-blocking driving chamber.

4. The built-in transformer according to claim 3, characterized in that: The slow flow cooling unit comprises: The slow-flow plunger is arranged in the delayed drainage seat and is slidably connected to the delayed drainage seat. The slow-flow plunger is provided with at least one group of slow-flow column grooves, and at least one group of inclined drainage plates is installed in the slow-flow column grooves. A conical piston seat fixedly connected to the slow-flow plunger. The two ends of the conical piston seat respectively extend into the slow-drainage seat and the oil overflow seat, and are slidably connected to the oil overflow seat. A spiral drainage pipe is fixedly sleeved on the conical piston seat; A support connecting rod is fixedly installed in the conical piston seat, and the end of the support connecting rod away from the conical piston seat slidably extends into the anti-blocking drive cavity and is fixedly connected to a second stop seat. The second stop seat is connected to the slow-flow linkage part; A first stop seat is fixedly sleeved on the outer wall of the support connecting rod and is slidably arranged in the anti-blocking drive cavity; A first return spring is fixedly embedded in the anti-blocking drive cavity, and one end of the first return spring is fixedly connected to the first stop seat.

5. The built-in transformer according to claim 4, characterized in that: The slow-drainage linkage part includes: An extrusion sliding seat is fixedly installed on the second stop seat and is slidably connected to the inner wall of the anti-blocking drive cavity; A driven torsion seat is rotatably arranged in the anti-blocking drive cavity and is slidably connected to the extrusion sliding seat; A first gear fixedly connected to the driven torsion seat, and the first gear is meshed and driven with the linkage tooth seat; A torsion spring support tray fixedly embedded in the anti-blocking drive cavity. A return torsion spring is fixedly embedded in the torsion spring support tray, and one end of the return torsion spring is fixedly connected to the driven torsion seat.

6. The built-in transformer according to claim 3, characterized in that: The heat collection and drainage part includes: A rotating sleeve seat is rotatably sleeved on the outer wall of the slow-drainage seat; At least one set of twisted heat absorption fins is fixedly installed in the rotating sleeve seat, and at least one set of auxiliary heat absorption grooves is arranged in the twisted heat absorption fins.

7. The built-in transformer according to claim 2, characterized in that: The air-cooling linkage part includes: A linkage turntable is rotatably arranged in the air-cooling negative pressure seat, and one side of the linkage turntable is fixedly connected to the linkage tooth seat through a linkage rotating shaft; At least one set of linkage convex blocks is fixedly installed on the linkage turntable, and the linkage convex blocks are used to drive the auxiliary cooling component.

8. The built-in transformer according to claim 7, wherein: The auxiliary cooling component includes: An auxiliary cooling seat is arranged corresponding to the heat dissipation conduction seat. At least one set of heat absorption electrode sheets is symmetrically arranged on one side of the auxiliary cooling seat, and at least one set of heat dissipation electrode sheets is fixedly installed on the other side. A cooling storage battery is embedded in the auxiliary cooling seat; A cooling seat support rod is detachably connected to the auxiliary cooling seat, and the cooling support rod is rotatably connected to the side wall of the air-cooling negative pressure seat; An elastic sphere is fixedly installed at the end of the cooling seat support rod.

9. The built-in transformer according to any one of claims 2-7, characterized in that: The built-in linkage part includes: A second gear is rotatably arranged on the inner wall of the built-in box, and the second gear is fixedly connected to the linkage tooth seat; At least one set of eccentric gears, the eccentric gears are meshed and driven with the second gear, and eccentric through grooves are arranged in the eccentric gears; A linkage cam movably embedded in the eccentric through groove. One side of the linkage cam is fixedly connected to a built-in linkage seat. The built-in linkage seat is slidably connected to the built-in box, and a linkage limit groove is arranged in the built-in linkage seat; At least one set of built-in limit seats is fixedly installed on the limit support bracket. The limit support bracket is fixedly installed in the immersion cavity. The built-in limit seats are slidably connected to the linkage limit groove; A second return spring is fixedly installed on the inner wall of the built-in linkage seat, and one end of the second return spring is fixedly connected to the built-in linkage seat; A disturbance corrugated part fixedly connected to the end of the built-in linkage seat. The disturbance corrugated part is used to disturb the oil in the immersion cavity and assist in dissipating heat from the transformer group in the immersion cavity.

10. The built-in transformer according to claim 9, wherein: The disturbance corrugated part includes: An arc-shaped disturbance seat is detachably installed at the end of the built-in linkage seat; At least one set of disturbing corrugated grooves, the disturbing corrugated grooves are formed in the arc-shaped disturbing seat, and At least one set of disturbing corrugated rollers, the disturbing corrugated rollers are fixedly installed in the arc-shaped disturbing seat for disturbing the oil liquid in the immersion cavity.

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