CN111710499B - Power transformer - Google Patents
Power transformer Download PDFInfo
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- CN111710499B CN111710499B CN202010793094.8A CN202010793094A CN111710499B CN 111710499 B CN111710499 B CN 111710499B CN 202010793094 A CN202010793094 A CN 202010793094A CN 111710499 B CN111710499 B CN 111710499B
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- heat dissipation
- air
- fan mechanism
- channel
- damping
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Transformer Cooling (AREA)
Abstract
The invention discloses a power transformer, which comprises a transformer main body, a heat dissipation air channel and a damping and heat dissipation structure, wherein the heat dissipation air channel is at least partially arranged around the periphery of the transformer main body; the heat dissipation air channel comprises an air inlet channel and an air outlet channel, the openings of the air inlet channel and the air outlet channel face the shock absorption and heat dissipation structure respectively, the air inlet channel and the air outlet channel are communicated through a plurality of heat dissipation channels, and the heat dissipation channels are arranged around the transformer main body; the damping and heat dissipation structure comprises a mounting plate, and an adjustable damping piece and a vibration fan mechanism which are arranged on the mounting plate, wherein the adjustable damping piece is in contact extrusion with two opposite sides of the transformer main body, the vibration fan mechanism comprises a blower and an exhaust fan which are respectively arranged corresponding to the air inlet channel and the air outlet channel, and the vibration fan mechanism is used for increasing or shortening the length of the heat dissipation air channel through vibration. The damping and the vibration environment are utilized to improve the heat dissipation performance, so that the problems of over dispersion and large and heavy structure are solved.
Description
Technical Field
The invention relates to the field of transformer structures, in particular to a power transformer.
Background
Transformers are devices for changing ac voltage using the principle of electromagnetic induction, and are classified into dry type transformers and oil immersed type transformers according to the difference of cooling media.
In the dry-type transformer, since the heat dissipation method is air heat dissipation, in many cases, the occurrence of a failure is often caused by the heat dissipation performance. On this basis, when the transformer is used in a relatively oscillating environment, the overall heat dissipation performance of the transformer is further problematic due to multiple factors of the environment, and in the oscillating environment, once the overall heat dissipation performance is slightly problematic, the stability of the whole transformer is further reduced.
Although there are some transformer structure's that have anti-seismic performance or heat dispersion setting mode among the prior art, however, be independent separately between the two mostly, in the practical application process, if want to combine both simultaneously, then to a great extent can lead to whole transformer base structure too big and too complicated to cause the structure overweight, the demand that is difficult to the adaptation environment under the oscillation environment more.
Disclosure of Invention
The invention aims to provide a power transformer to solve the problem that the transformer in the prior art is more seriously influenced by the heat dissipation function under the oscillation environment, and the transformer and the heat dissipation function are well unified and combined to cause design difficulty.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
a power transformer comprises a transformer main body, a heat dissipation air channel at least partially surrounding the periphery of the transformer main body, and a damping and heat dissipation structure for providing convection air to the heat dissipation air channel; wherein the content of the first and second substances,
the heat dissipation air channel comprises an air inlet channel and an air outlet channel, the openings of the air inlet channel and the air outlet channel face the shock absorption and heat dissipation structure respectively, the air inlet channel and the air outlet channel are communicated through a plurality of heat dissipation pore channels, and the heat dissipation pore channels are arranged around the transformer main body;
the shock attenuation heat radiation structure includes the mounting panel, and set up in adjustable damping piece and vibrations fan mechanism on the mounting panel, just adjustable damping piece with two side contact extrusion settings that the transformer main part is relative, vibrations fan mechanism including corresponding to inlet channel's hair-dryer, still including corresponding to outlet channel's air exhauster, just vibrations fan mechanism is through vibrations so that the length in heat dissipation wind channel increases or shortens.
As a preferred scheme of the invention, at least the air inlet channel and the air outlet channel respectively comprise an inner through pipe and an outer through pipe which are sequentially sleeved from inside to outside, and the side wall of the inner through pipe is penetrated to form a vent hole;
outer siphunculus with transformer main part relatively fixed sets up, interior siphunculus with vibrations fan mechanism links to each other and passes through vibrations fan mechanism drives interior siphunculus realizes vibrations.
As a preferable scheme of the present invention, one end of the outer tube is communicated with the plurality of heat dissipation channels, the other end of the outer tube is connected to the vibration fan mechanism through a buffer, the inner tube includes a corrugated expansion tube section and an air intake section which are sequentially connected from a connection end of the outer tube and the heat dissipation channels toward the vibration fan mechanism, and the vent hole is located in the air intake section.
As a preferred scheme of the present invention, a plurality of heat dissipation through holes are formed on the side wall of the heat dissipation pore channel, and the direction of the axis of each heat dissipation through hole is perpendicular to the direction of the axis of the corresponding heat dissipation pore channel at the position of the heat dissipation through hole;
the heat dissipation through holes are truncated cone-shaped through holes, and the reduction directions of the sectional areas of the truncated cone-shaped through holes are not completely the same.
As a preferable scheme of the present invention, the adjustable damping member includes a vertical damping section, a horizontal damping section, and an oblique damping section, which are sequentially connected from the mounting plate to an end contacting the transformer body;
and a clamping plate is formed at one end of the oblique damping section, which is in contact with the transformer main body, and a groove for clamping the clamping plate is correspondingly formed in the transformer main body.
As a preferred scheme of the invention, each shock pad at least comprises a shock absorption rod and a shock absorption spring sleeved outside the shock absorption rod, and two adjacent shock absorption rods are connected through an elastic arc-shaped pipe;
be close to in the shock-absorbing rod in the vertical shock attenuation section one side of mounting panel extends along the horizontal direction and is formed with the installation pole, vibrations fan mechanism pass through the mounting bracket install in on the installation pole, just keep away from in the installation pole the one end of shock-absorbing rod is formed with the sliding block, be formed with the track that slides that sets up along vertical direction on the mounting bracket, the sliding block can set up with sliding on the track that slides.
As a preferable scheme of the present invention, the mounting bracket includes a support provided with the sliding rail, and a jacking table provided on the support, an upper end surface of the jacking table is higher than an upper end surface of the support, and the vibration fan mechanism is provided on the jacking table.
As a preferred scheme of the present invention, the jacking table includes a plurality of jacking blocks sleeved from outside to inside in a stepped manner, and the upper end surfaces of the jacking blocks gradually rise from outside to inside, and the vibration fan mechanism is disposed on the upper end surface of the innermost jacking block;
two adjacent jacking blocks are connected through a telescopic corrugated hose.
Compared with the prior art, the invention has the following beneficial effects:
1) by the arrangement of the adjustable damping piece, effective damping is provided for the use of the transformer body in a vibration environment;
2) the vibration fan mechanism and the adjustable damping piece are arranged in parallel, so that the combination and the unification of the vibration fan mechanism and the adjustable damping piece are realized, the overall structure is greatly simplified, and the performance of the vibration fan mechanism and the adjustable damping piece can be effectively cooperatively arranged;
3) vibrations setting of vibrations fan mechanism cooperates the heat dissipation wind channel, combines the further combination of outside vibrations, with outside vibrations reaction in vibrations fan mechanism, the increase vibration frequency realizes the increase and the shortening of the whole length in heat dissipation wind channel better, through continuous alternate repetition, provides the convection current air in the wind channel of dispelling the heat better to further promote the heat dissipation to the transformer main part through the wind channel of dispelling the heat.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
Fig. 1 is a schematic structural diagram of a power transformer according to an embodiment of the present invention;
fig. 2 is a schematic partial structure diagram of a heat dissipation air duct according to an embodiment of the present invention;
fig. 3 is a schematic partial structural view of a shock-absorbing heat-dissipating mechanism according to an embodiment of the present invention;
fig. 4 is a schematic partial structure view of a heat dissipation pore according to an embodiment of the present invention.
The reference numerals in the drawings denote the following, respectively:
1-a transformer body; 2-a heat dissipation air duct; 3, a damping heat dissipation structure;
21-an intake passage; 22-an air outlet channel; 23-heat dissipation pore channels;
211-inner through pipe; 212-outer tube; 213-a vent; 214-a buffer; 215-bellows section; 216-an air intake section;
231-heat dissipation through holes;
31-a mounting plate; 32-an adjustable shock absorber; 33-a vibrating fan mechanism; 34-a top plate;
321-a vertical shock absorbing section; 322-horizontal shock absorbing section; 323-oblique shock absorption section; 324-a clamping plate; 325-shock absorbing rod; 326-damping spring; 327-an elastic arced tube; 328-a mounting bar;
331-a blower; 332-an exhaust fan; 333-support; 334-jacking blocks; 335-corrugated hose.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-4, the present invention provides a power transformer, which includes a transformer main body 1, a heat dissipation air duct 2 at least partially disposed around the periphery of the transformer main body 1, and a damping heat dissipation structure 3 for providing convection air into the heat dissipation air duct 2.
The heat dissipation air duct 2 includes an air inlet channel 21 and an air outlet channel 22 with openings facing the damping and heat dissipation structure 3, the air inlet channel 21 and the air outlet channel 22 are communicated with each other through a plurality of heat dissipation channels 23, and the heat dissipation channels 23 are arranged around the transformer body 1.
The shock-absorbing heat-dissipating structure 3 includes a mounting plate 31, and an adjustable shock-absorbing member 32 and a vibration fan mechanism 33 which are disposed on the mounting plate 31, and the adjustable shock-absorbing member 32 is disposed in contact with and pressed against two opposite sides of the transformer body 1, the vibration fan mechanism 33 includes a blower 331 corresponding to the air inlet channel 21, and further includes an exhaust fan 332 corresponding to the air outlet channel 22, and the vibration fan mechanism 33 causes the length of the heat-dissipating air duct 2 to increase or decrease by vibration.
In the structure of the transformer, the damping and the heat dissipation of the transformer are independent, and particularly under the condition of oscillation, the transformer is required to be damped so as to avoid the problem that the transformer is easy to break down under the long-term frequent vibration environment. However, although the shock absorption reduces the failure rate, because the dry-type transformer usually adopts the active heat dissipation and passive heat dissipation to dissipate heat, therefore, improving the shock absorption effect will reduce the air circulation around it to a great extent, further causing the heat dissipation effect to deteriorate, and if additionally increasing the heat dissipation structure on this basis, not only can make the overall structure grow, cause extra weight burden for the transformer, further increase the load under frequent vibration environment, and simultaneously, also can bring great burden for the design of overall structure.
And in this application, carry out the centre gripping shock attenuation to transformer main part 1 through adopting adjustable damper 32, on this basis, introduce vibrations fan mechanism 33, the cooperation vibrates the environment, further realize the convection current regulation to the air in the cooperation of heat dissipation wind channel 2, under the vibration environment, under the condition that does not additionally increase more heat radiation structure, realize the regulation and control to heat dissipation wind channel 2 through the vibration environment, and accomplish the continuous switching to convection current air wherein, thereby effectively realize not only can the shock attenuation under the vibration environment, and can be through the utilization to the vibration environment, further realize the control to convection current air wherein, accomplish the effective improvement of heat dispersion.
The blowing fan 331 and the drawing fan 332 may be vibration fans, i.e., vibration fans capable of generating a certain frequency during blowing and drawing.
In a preferred embodiment of the present invention, at least the inlet channel 21 and the outlet channel 22 respectively comprise an inner tube 211 and an outer tube 212 sleeved in sequence from inside to outside, and a vent hole 213 is formed through a sidewall of the inner tube 211.
The outer tube 212 is fixed to the transformer body 1, and the inner tube 211 is connected to the vibration fan mechanism 33 and driven by the vibration fan mechanism 33 to vibrate.
Through the above arrangement, make in the entry and the exit of convection current air, outer siphunculus 212 keeps unchangeable relatively, make its inner space basically not have obvious change, and under the vibrations of vibrations fan mechanism 33, can drive interior siphunculus 211 along the vibrations of axis direction, thereby make the length of whole heat dissipation wind channel 2 normal or shorten, further combine the whole convection current air that vibrations fan mechanism 33 provided again, thereby make the air in heat dissipation wind channel 2 be in the transform process of compression and release always, and then effectively improve heat dispersion with the help of vibrations itself, the thermal diffusivity has been improved greatly under the vibrations environment more. Simultaneously, the setting of adjustable damper 32 has also further guaranteed transformer body 1's shock attenuation effect, and the two complements each other, and does not interfere with each other in the drawback part, and effective synergism further improves shock attenuation and heat dissipation dual function.
In a further preferred embodiment, in order to enable the inner through pipe 211 to better adjust the length of the outer through pipe 212, one end of the outer through pipe 212 is communicated with the plurality of heat dissipation channels 23, the other end of the outer through pipe is connected to the vibration fan mechanism 33 through a buffer 214, the inner through pipe 211 comprises a corrugated expansion pipe section 215 and an air inlet section 216, which are sequentially connected from the connection end of the outer through pipe 212 and the heat dissipation channels 23 to the vibration fan mechanism 33, and the vent hole 213 is located in the air inlet section 216.
Of course, in another preferred embodiment of the present invention, a plurality of heat dissipating through holes 231 are formed on the sidewall of the heat dissipating duct 23, and the axial direction of the heat dissipating through holes 231 faces the transformer body 1, and is perpendicular to the axial direction of the section of the heat dissipating duct 23 where the heat dissipating through holes 231 are located.
The heat dissipating through-holes 231 are truncated cone-shaped through-holes, and the reduction directions of the sectional areas of the truncated cone-shaped through-holes are not completely the same. Specifically, as shown in fig. 4, the cross-sectional areas of two adjacent heat dissipation through holes 231 may be reduced in opposite directions, so that convection between the inside air and the outside air can be effectively achieved, and the convection effect between the inside air and the outside air is improved.
In a further preferred embodiment, the adjustable damping member 32 includes a vertical damping section 321, a horizontal damping section 322, and an oblique damping section 323 connected in sequence from the mounting plate 31 to an end contacting the transformer body 1;
and a clamping plate 324 is formed at one end of the oblique shock absorption section 323, which is in contact with the transformer body 1, and a groove for clamping the clamping plate 324 is correspondingly formed on the transformer body 1.
Through the corresponding setting of vertical shock attenuation section 321, horizontal shock attenuation section 322 and slant shock attenuation section 323, pertinence ground is adjusted according to diversified, further improves the shock attenuation effect, can better pertinence cooperation vibrations fan mechanism 33 simultaneously, avoids its influence to transformer main part 1 itself.
In a more preferred embodiment, each shock absorbing pad at least comprises a shock absorbing rod 325, and a shock absorbing spring 326 sleeved outside the shock absorbing rod 325, and two adjacent shock absorbing rods 325 are connected through an elastic arc tube 327.
One side that is close to mounting panel 31 in the shock-absorbing rod 325 in vertical shock attenuation section 321 extends along the horizontal direction and is formed with installation pole 328, and vibrations fan mechanism 33 passes through the mounting bracket to be installed on installation pole 328, and the one end of keeping away from shock-absorbing rod 325 in installation pole 328 is formed with the sliding block, is formed with the track that slides that sets up along vertical direction on the mounting bracket, and the sliding block can set up on the track that slides with sliding. Thereby make the in-process of driving vibrations, the mounting bracket can form relative movement with the sliding block, and then guarantees the effective vibrations of whole vibrations fan mechanism 33.
In a more preferred embodiment, the mounting bracket includes a support 333 provided with a sliding rail, and a jacking table provided on the support 333, and an upper end surface of the jacking table is higher than an upper end surface of the support 333, and the vibration fan mechanism 33 is provided on the jacking table.
In a further preferred embodiment, the jacking table includes a plurality of jacking blocks 334 sleeved from outside to inside in a stepped manner, the jacking blocks 334 gradually rise from outside to inside upper end surfaces, and the vibration fan mechanism 33 is disposed on the upper end surface of the innermost jacking block 334.
Two adjacent jacking blocks 334 are connected through a telescopic corrugated hose 335.
Above-mentioned setting further utilizes the vibrations of environment of own to improve the effective vibrations of vibrations fan mechanism 33 better, specifically speaking, because installation pole 328 is connected in vertical shock attenuation section 321 bottom, consequently, it receives the vibrations influence of environment the biggest, on this basis, it can further conduct and drive the vibrations of support 333, so that track and the sliding block relative motion slide, based on the vibrations of support 333, through setting up the jacking platform to cup joint by a plurality of jacking pieces 334, thereby further strengthen the conduction of vibrations, and realize better vibrations that innermost jacking piece 334 drove hair-dryer 331 and air exhauster 332 better through layer upon layer progressive mode. Of course, the blower 331 and the suction fan 332 are each provided on a corresponding one of the mounting brackets.
In a more preferred embodiment, in order to better ensure the stability of the whole structure, further improve the overall heat dissipation, and improve the damping effect on the basis, a top plate 34 is further fixedly disposed between the mounting plate 31 and the transformer body 1, and the air inlet channel 21 and the air outlet channel 22 are disposed through the top plate 34.
And the part of the outer tube 212 penetrating the top plate 34 is formed in a truncated cone shape in an inclined manner, and the sectional area of the upper surface of the truncated cone shape is larger than that of the lower surface.
The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.
Claims (8)
1. A power transformer is characterized by comprising a transformer main body (1), a heat dissipation air channel (2) at least partially surrounding the periphery of the transformer main body (1), and a damping and heat dissipation structure (3) for providing convection air into the heat dissipation air channel (2); wherein the content of the first and second substances,
the heat dissipation air duct (2) comprises an air inlet channel (21) and an air outlet channel (22) with openings facing the shock absorption and heat dissipation structure (3), the air inlet channel (21) is communicated with the air outlet channel (22) through a plurality of heat dissipation pore channels (23), and the heat dissipation pore channels (23) are arranged around the transformer main body (1);
the damping and heat dissipation structure (3) comprises a mounting plate (31), and an adjustable damping piece (32) and a vibration fan mechanism (33) which are arranged on the mounting plate (31), wherein the adjustable damping piece (32) is in contact extrusion arrangement with two opposite side surfaces of the transformer main body (1); the vibrating fan mechanism (33) comprises a blower (331) corresponding to the air inlet channel (21) and an exhaust fan (332) corresponding to the air outlet channel (22), and the vibrating fan mechanism (33) enables the length of the heat dissipation air duct (2) to be increased or shortened through vibration;
at least the air inlet channel (21) and the air outlet channel (22) respectively comprise an inner through pipe (211) and an outer through pipe (212) which are sequentially sleeved from inside to outside, and a vent hole (213) is formed on the side wall of the inner through pipe (211) in a penetrating way;
outer siphunculus (212) with transformer main part (1) relatively fixed sets up, interior siphunculus (211) with vibrations fan mechanism (33) link to each other, and pass through vibrations fan mechanism (33) drive interior siphunculus (211) vibrations.
2. A power transformer according to claim 1, wherein one end of the outer tube (212) is connected to a plurality of the heat dissipation channels (23), and the other end is connected to the vibration fan mechanism (33) through a buffer member (214), the inner tube (211) comprises a corrugated expansion tube section (215) and an air inlet section (216) which are sequentially connected from the connection end of the outer tube (212) and the heat dissipation channels (23) to the vibration fan mechanism (33), and the vent hole (213) is located in the air inlet section (216).
3. A power transformer according to any one of claims 1-2, characterized in that a plurality of heat dissipating through holes (231) are formed on the side wall of the heat dissipating duct (23) and extend in the direction of the transformer body (1), and the axial direction of the heat dissipating through holes (231) is perpendicular to the axial direction of the heat dissipating duct (23) at the position of the heat dissipating through holes (231);
the heat dissipation through holes (231) are truncated cone-shaped through holes, and the reduction directions of the sectional areas of the truncated cone-shaped through holes are not completely the same.
4. A power transformer according to any one of claims 1-2, characterized in that the adjustable damping member (32) comprises a vertical damping section (321), a horizontal damping section (322) and an oblique damping section (323) connected in series from the mounting plate (31) to the end in contact with the transformer body (1);
and a clamping plate (324) is formed at one end of the oblique damping section (323) which is in contact with the transformer main body (1), and a groove for clamping the clamping plate (324) is correspondingly formed in the transformer main body (1).
5. The power transformer according to claim 4, wherein the vertical shock absorption section (321), the horizontal shock absorption section (322) and the oblique shock absorption section (323) at least comprise shock absorption rods (325), shock absorption springs (326) sleeved outside the shock absorption rods (325), and two adjacent shock absorption rods (325) are connected through elastic arc-shaped pipes (327);
be close to in shock attenuation pole (325) in vertical shock attenuation section (321) one side of mounting panel (31) extends along the horizontal direction and is formed with installation pole (328), vibrations fan mechanism (33) install in through the mounting bracket on installation pole (328), just keep away from in installation pole (328) the one end of shock attenuation pole (325) is formed with the sliding block, be formed with the track that slides that sets up along vertical direction on the mounting bracket, the sliding block can set up with sliding on the track that slides.
6. A power transformer according to claim 5, characterized in that the mounting frame comprises a support (333) provided with the sliding rail, and a jacking table arranged on the support (333), and the upper end surface of the jacking table is higher than the upper end surface of the support (333), and the vibration fan mechanism (33) is arranged on the jacking table.
7. A power transformer according to claim 6, characterized in that the jacking table comprises a plurality of jacking blocks (334) sleeved from outside to inside in a stepped manner, the jacking blocks (334) are gradually raised from the outside to the inside upper end surface, and the vibrating fan mechanism (33) is arranged on the upper end surface of the innermost jacking block (334);
two adjacent jacking blocks (334) are connected through a telescopic corrugated hose (335).
8. A power transformer according to claim 1, characterized in that a top plate (34) is fixedly arranged between the mounting plate (31) and the transformer body (1), and the air inlet channel (21) and the air outlet channel (22) are arranged through the top plate (34);
and the part of the outer through pipe (212) penetrating through the top plate (34) is inclined to form a circular truncated cone-shaped structure, and the sectional area of the upper surface of the circular truncated cone-shaped structure is larger than that of the lower surface of the circular truncated cone-shaped structure.
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| CN202010793094.8A CN111710499B (en) | 2020-08-10 | 2020-08-10 | Power transformer |
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| JP3153673B2 (en) * | 1993-05-28 | 2001-04-09 | 株式会社東芝 | Gas insulated transformer |
| CN206907628U (en) * | 2017-06-05 | 2018-01-19 | 刘欢 | A kind of low temperature mute type transformer device structure |
| CN206849620U (en) * | 2017-06-06 | 2018-01-05 | 国网江苏省电力公司连云港供电公司 | A kind of multi-functional power transformer with cooling mechanism |
| CN108962543B (en) * | 2018-07-17 | 2019-11-05 | 江苏锡沂高新区科技发展有限公司 | A kind of high-frequency and high-voltage rectifier transformer |
| CN109001416A (en) * | 2018-10-09 | 2018-12-14 | 东阳市天齐知识产权运营有限公司 | A kind of galvanized iron sheet micro-hole detection device and its application method that can apply bubble-water certainly |
| CN210129426U (en) * | 2019-07-21 | 2020-03-06 | 淮安市鼎新电子有限公司 | Heat dissipation and noise reduction type transformer |
| CN210840263U (en) * | 2019-10-14 | 2020-06-23 | 蚌埠煜明电子科技有限公司 | Wave soldering device |
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