Oil-immersed transformer

Abstract

The invention relates to the field of transformers, in particular to an oil-immersed transformer which comprises a shell, a transformer core is installed in the middle of the interior of the shell, first heat dissipation fins which are evenly distributed are arranged on the two sides of the shell correspondingly, cross rods are fixedly connected to the upper portions and the lower portions of the first heat dissipation fins correspondingly, and sliding rods are slidably connected to the interiors of the cross rods correspondingly; the middles of the sliding rods are provided with guide grooves, the two ends of each sliding rod are provided with balancing weights, the middles of the first cooling fins are provided with openings, the middles of the openings are rotationally connected with rotating shafts, one sides of the middles of the rotating shafts are fixedly connected with rotating plates, and the upper portions and the lower portions of the peripheries of the rotating shafts are provided with tooth grooves. According to the invention, the problems that the heat dissipation of the internal and external insulating oil is not uniform when the traditional insulating oil stands, and the internal high-temperature insulating oil can continuously cause negative effects on the heat dissipation process are solved.

Description

Technical Field

[0001] The present invention relates to the field of transformers, and in particular to an oil-immersed transformer. Background Art

[0002] In the power transmission and distribution system, oil-immersed transformers are key equipment that undertake the important responsibilities of voltage conversion and power transmission. Although traditional oil-immersed transformers can basically meet conventional needs, they have obvious shortcomings in heat dissipation, energy saving, and environmental protection. Their heat dissipation methods mostly rely on natural convection or simple air cooling, which is inefficient. In the absence of wind, heat easily accumulates around the transformer casing and is not easy to dissipate. At the same time, when heat is dissipated, the insulating oil inside the casing remains stationary, and only the outer insulating oil is in a heat dissipation state. The insulating oil with the highest temperature in the center can only be passively dissipated. The insulating oil is prone to aging due to uneven heat dissipation, affecting its service life and safety. Therefore, we propose an oil-immersed transformer to solve the above-mentioned problems. Summary of the Invention

[0003] The purpose of the present invention is to solve the shortcomings of the background technology and to propose an oil-immersed transformer.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is as follows: an oil-immersed transformer, comprising a shell, a transformer core is installed in the middle of the shell, and evenly distributed heat dissipation fins are provided on both sides of the shell, the upper and lower parts of the heat dissipation fins are fixedly connected to cross bars, the interior of the cross bars are slidably connected to slide bars, the middle parts of the slide bars are provided with guide grooves, counterweights are installed at both ends of the slide bars, the middle parts of the heat dissipation fins are provided with openings, the middle parts of the openings are rotatably connected to rotating shafts, one side of the middle part of the rotating shaft is fixedly connected to a rotating plate, the upper and lower parts of the outer circumference of the rotating shaft are provided with tooth grooves, the rotating shafts are meshed with the guide grooves through the tooth grooves, and the corners of the shell are A connecting block is fixedly connected, and the end of the connecting block away from the shell is fixedly connected to the side tube, a heat-conducting frame is provided on the outside of the transformer core, and a heat-transfer frame is installed at the corner end of the heat-conducting frame, and the heat-transfer frame is arranged on one side inside the side tube, and a heat-conducting spacer is installed on one side of the middle of the side tube, and a piston cylinder is installed on the side of the heat-conducting spacer away from the heat-transfer frame, and a piston block is provided inside the piston cylinder, and the end of the piston block away from the heat-transfer frame is fixedly connected to a connecting rod, and the end of the connecting rod away from the piston block passes through the end of the side tube, and the connecting rod is slidably connected to the side tube, and the end of the connecting rod away from the piston block is connected to the cross bar through a universal ball connector.

[0005] Preferably, a top cover is installed on the top of the shell in the middle part, and the outer periphery of the piston cylinder is fixedly connected with evenly distributed heat-conducting plates, and the ends of the heat-conducting plates pass through one side of the outer periphery of the side cylinder. Both sides of the sliding rod are slidably connected to limit strips, and the limit strips are fixedly connected to the middle parts of both sides inside the cross bar. The corners of the heat-conducting frame pass through the connecting block, and the heat dissipating fins in the middle are fixedly connected to a rotating rack, and the rotating racks are rotatably connected to the middle parts of both sides of the shell, and the ends of the connecting rods are set as spring segments.

[0006] Preferably, the front and rear sides of the shell are fixedly connected with recessed bins, the middle of one side of the recessed bin is fixedly connected with a second heat sink fin, the middle of the second heat sink fins on both sides are rotatably connected with a rotating rod, and the middle of the second heat sink fins on the middle side are rotatably connected with a rotating rod.

[0007] Preferably, a plurality of horizontal square tubes pass through the middle of the concave warehouse, piston plates are slidably connected on both sides of the inside of the horizontal square tubes, the middle parts of adjacent piston plates are connected by fixed rods, and the fixed rods are connected by connecting columns, and a plurality of through holes are opened on the upper and lower sides of the middle part of the piston plate.

[0008] Preferably, the middle part of the outer periphery of the rotating rod is fixedly connected to a guide wheel, the ends of the rotating rod pass through the wall of the horizontal square cylinder and are rotatably connected to the horizontal square cylinder, the ends of the rotating rod are fixedly connected to a turntable, and the middle part of the turntable away from the rotating rod is fixedly connected to a convex column.

[0009] Preferably, a central ring is provided on one side of the turntable away from the rotating rod, the middle parts of both ends of the central ring are fixedly connected to guide rods, the outer periphery of the guide rods are slidably connected to limit seats, and the limit seats are fixedly connected to the inner side of the horizontal square tube.

[0010] Preferably, the protruding columns are all arranged on the inner side of the central ring, and one end of each guide rod is fixedly connected to the piston plate.

[0011] Preferably, the upper and lower parts of the inner side of the middle concave bin are fixedly connected to the limiting cylinder, the inner side of the limiting cylinder is rotatably connected to the blade, and the outer periphery of the end of the blade away from the limiting cylinder is fixedly connected to the driven bevel gear.

[0012] Preferably, one end of the rotating rod away from the second heat sink fin passes through the side wall of the horizontal square tube and is rotatably connected to the horizontal square tube, and one end of the rotating rod away from the second heat sink fin is fixedly connected to the impeller.

[0013] Preferably, the impellers are all arranged inside the horizontal square cylinder, the middle part of the outer circumference of the rotating rod is fixedly connected with a driving bevel gear, and the upper and lower parts of one side of the driving bevel gear are meshed with the driven bevel gear.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention expands the surface area of ​​the shell by the heat dissipation fins 1 and 2 on all sides of the shell, providing basic auxiliary heat dissipation for the transformer. The conical design of the guide wheels on the heat dissipation fins 2 on both sides can enable them to withstand wind forces from all directions and rotate with the wind. The cooperation between the rotating rod, the convex column at the end of the turntable and the central ring drives the guide rod to move back and forth, and then drives all the piston plates to move synchronously in the horizontal cylinder through the fixed rod and the connecting column. The reciprocating motion of the piston plate causes the insulating oil in the horizontal cylinder to continue to flow. When flowing through the concave section, the insulating oil is separated from the rest of the insulating oil in the shell and directly contacts the outside world, which significantly improves the heat dissipation effect and solves the problem of uneven heat dissipation of the insulating oil inside and outside when the traditional insulating oil is left stationary, and the internal high-temperature insulating oil will continue to have a negative impact on the heat dissipation process.

[0016] 2. The present invention enhances the heat dissipation effect and accelerates the cooling of the insulating oil through the air flow disturbance design. When the insulating oil flows in the horizontal square cylinder, it drives the impeller to rotate, which drives the rotating rod to rotate. The upper and lower blades rotate synchronously through the meshing transmission of the active bevel gear and the driven bevel gear. The rotation of the blades disturbs the air inside the concave bin to form an airflow, further accelerating the heat dissipation speed of the insulating oil passing through the concave bin section. Compared with the single flow heat dissipation, the heat dissipation efficiency is more significantly improved.

[0017] 3. When the transformer core is working, the present invention forms an enclosing heat-conducting layer through the surrounding heat-conducting frames, which quickly conducts the heat of the insulating oil around the core to the outside of the shell. At the same time, the heat-conducting frames heat the thermosensitive gas in the side tube. The gas expands due to heat and pushes the piston block upward, driving the cross bar and the heat dissipation fin to deflect through the connecting rod; after the heat-conducting plate on the upper part of the side tube dissipates heat, the piston block retracts, and the heat dissipation fin returns to the original position under the action of gravity and the connecting rod. This cyclic action causes the heat dissipation fin to continuously deflect, which not only disturbs the surrounding airflow to enhance heat dissipation, but also forms a dynamic guide for the airflow when there is wind outside, ensuring that all areas of the transformer can obtain effective heat dissipation. This overcomes the defect of limited heat dissipation range of traditional fixed structures, realizes dynamic heat dissipation adjustment, and achieves comprehensive heat dissipation coverage.

[0018] 4. The present invention strengthens airflow and improves heat dissipation coordination through multi-stage linkage. When the heat dissipation fins are deflected, the cross bar rotates accordingly, causing the slide bar inside the cross bar to slide back and forth. The slide bar drives each rotating shaft to rotate through the engagement of the inner guide groove and the tooth groove. The rotating plate on the outer periphery of the rotating shaft disturbs the airflow between the heat dissipation fins, further improving the heat dissipation effect, forming a multi-stage coordinated heat dissipation mechanism of "internal heat drive-heat dissipation cycle-airflow disturbance", which is more suitable for the heat dissipation requirements of the transformer during dynamic operation, so that it can still maintain a good heat dissipation effect in a windless state, and can further promote the heat dissipation effect when there is wind. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front three-dimensional structure of an oil-immersed transformer of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of a shell of an oil-immersed transformer according to the present invention;

[0021] Figure 3 This is a partial structural diagram of a heat-conducting frame and a transformer core of an oil-immersed transformer according to the present invention;

[0022] Figure 4 This is a schematic diagram of the local structure inside the side drum of an oil-immersed transformer according to the present invention;

[0023] Figure 5 This is a schematic diagram of the partial structure of a piston block of an oil-immersed transformer according to the present invention;

[0024] Figure 6 This is a schematic diagram of the partial structure inside the crossbar of an oil-immersed transformer of the present invention;

[0025] Figure 7 This is a partial structural diagram of a horizontal barrel and a concave bin of an oil-immersed transformer according to the present invention;

[0026] Figure 8 This is a partial structural diagram of the blades and inducer of an oil-immersed transformer according to the present invention;

[0027] Figure 9 This is a schematic diagram of the partial structure of the impeller of an oil-immersed transformer of the present invention;

[0028] Figure 10 The present invention is a partial structural diagram of a turntable and a central ring of an oil-immersed transformer.

[0029] 101. Housing; 102. Top cover; 103. Guide rod; 104. Radiator fin 1; 105. Connecting rod; 106. Center ring; 107. Heat conducting plate; 108. Side tube; 109. Transformer core; 110. Recessed compartment; 111. Radiator fin 2; 112. Heat conducting frame; 113. Rotating frame; 114. Connecting block; 115. Crossbar; 116. Piston cylinder; 117. Rotating plate; 118. Piston block; 119. Heat conducting spacer; 120. Opening; 121. Rotating shaft ; 122. Tooth groove; 123. Guide groove; 124. Slide rod; 125. Limit strip; 126. Limit cylinder; 127. Horizontal cylinder; 128. Blade; 129. Fixed rod; 130. Connecting column; 131. Driven bevel gear; 132. Guide wheel; 133. Rotating rod; 134. Piston plate; 135. Rotating rod; 136. Through hole; 137. Impeller; 138. Turntable; 139. Limit seat; 140. Boss; 141. Active bevel gear; 142. Heat transfer frame. DETAILED DESCRIPTION

[0030] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0031] like Figures 1-10 The oil-immersed transformer shown in the figure includes a shell 101, a top cover 102 is installed on the top of the shell 101, a transformer core 109 is installed in the middle of the shell 101, and evenly distributed heat dissipation fins 104 are provided on both sides of the shell 101. The corners of the shell 101 are fixedly connected to the connecting blocks 114, and the ends of the connecting blocks 114 away from the shell 101 are fixedly connected to the side tube 108. A heat-conducting frame 112 is provided on the outside of the transformer core 109, and the corners of the heat-conducting frame 112 pass through the connecting blocks 114. Heat-conducting frames 142 are installed at the ends of the corners of the heat-conducting frame 112. The heat-conducting frames 142 are arranged on one side of the inside of the side tube 108, and a heat-conducting spacer 119 is installed on one side of the middle of the side tube 108. A piston cylinder 116 is installed on the side of the heat-conducting spacer 119 away from the heat-conducting frame 142. The outer periphery of the piston cylinder 116 is fixedly connected to evenly distributed heat-conducting sheets 107. 7 ends all pass through one side of the outer circumference of the side tube 108, and a piston block 118 is provided inside the piston tube 116. The end of the piston block 118 away from the heat transfer frame 142 is fixedly connected to the connecting rod 105, and the end of the connecting rod 105 away from the piston block 118 all passes through the end of the side tube 108. The connecting rod 105 is slidably connected to the side tube 108, and the end of the connecting rod 105 away from the piston block 118 is connected to the cross bar 115 through a universal ball connector. The middle heat dissipation fin 104 is fixedly connected to the rotating frame 113, and the rotating frame 113 is rotatably connected to the middle of both sides of the shell 101. The ends of the connecting rods 105 are all set as spring sections, specifically, the ends of the connecting rods 105 are made of metal wound. The main material of the connecting rods 105 is a copper alloy with good elasticity, and the surface is covered with a wear-resistant insulating coating. The rotating parts of the shell 101 and the horizontal tube 127 are connected and sealed with sealed bearings;

[0032] Furthermore, in a specific implementation, people can realize voltage conversion of current through the transformer core 109. During the operation of the transformer core 109, the heat dissipation protection of the transformer core 109 can be realized through the insulating oil inside the shell 101. During the operation of the transformer core 109, an enclosing heat-conducting layer can be formed around the transformer core 109 through the heat-conducting frame 112 around the transformer core 109. The heat of the insulating oil around the transformer core 109 can be quickly transferred to the outside of the shell 101 through the heat-conducting frame 112. At the same time, the heat-sensitive gas inside the side tube 108 can be heated through the heat-conducting frame 142. After the heat-sensitive gas expands due to the heat, it will push the piston block 118 upward, thereby passing through the connecting rod fixed on the top. 105 drives the cross bar 115 and the heat sink fin 104 to deflect, and the heat dissipation of the upper space of the side tube 108 can be achieved through the heat conductive plate 107 on the upper part of the side tube 108, so that the piston block 118 will retract. At this time, under the joint action of the connecting rod 105 and gravity, the heat sink fin 104 will return to its original position. During the operation of the transformer core 109, the heat received by the bottom of the side tube 108 continues, so that the piston block 118 will circulate back and forth to form a continuous action, driving the heat sink fin 104 to deflect continuously, so that the surrounding airflow can be disturbed directly through the heat sink fin 104 to improve the heat dissipation effect. At the same time, when there is wind outside, the continuous deflection of the heat sink fin 104 can form continuous and different guides for the wind flow, so that the transformer can receive more comprehensive heat dissipation.

[0033] Among them, the upper and lower parts of the heat dissipation fin 104 are fixedly connected to the cross bar 115, and the interior of the cross bar 115 is slidably connected to the sliding bar 124. Both sides of the sliding bar 124 are slidably connected to the limit strips 125, and the limit strips 125 are fixedly connected to the middle parts of both sides of the cross bar 115. The middle part of the sliding bar 124 is provided with a guide groove 123, and both ends of the sliding bar 124 are installed with counterweights. The middle part of the heat dissipation fin 104 is provided with an opening 120, and the middle part of the opening 120 is rotatably connected to the rotating shaft 121. One side of the middle part of the rotating shaft 121 is fixedly connected to the rotating plate 117. The upper and lower parts of the outer periphery of the rotating shaft 121 are provided with tooth grooves 122, and the rotating shaft 121 is meshed with the guide groove 123 through the tooth groove 122.

[0034] Furthermore, in a specific implementation, during the deflection of the heat sink fin 104, the cross bar 115 will deflect accordingly, so that the slide bar 124 inside the cross bar 115 will slide back and forth inside the cross bar 115. During the sliding of the slide bar 124, the guide groove 123 on the inner side of the slide bar 124 will drive each shaft 121 to rotate through the tooth groove 122 engaged therewith. When the shaft 121 rotates, the rotating plate 117 on the periphery will disturb the airflow between the heat sink fins 104, thereby further improving the heat dissipation effect of the heat sink fin 104, which is beneficial for practical use.

[0035] Among them, the middle of the concave bin 110 is penetrated by multiple horizontal cylinders 127, and piston plates 134 are slidably connected on both sides of the interior of the horizontal cylinder 127. The middle parts of adjacent piston plates 134 are connected by fixed rods 129, and the fixed rods 129 are connected by connecting columns 130. A plurality of through holes 136 are opened on the upper and lower sides of the middle of the piston plate 134, and the middle part of the outer periphery of the rotating rod 133 is fixedly connected to the guide wheel 132. The ends of the rotating rod 133 pass through the wall of the horizontal cylinder 127 and are rotatably connected to the horizontal cylinder 127. The rotating parts are fixedly connected with a rotating disk 138, and a boss 140 is fixedly connected to one side of the middle of the end of the rotating disk 138 away from the rotating rod 133. A central ring 106 is provided on the side of the rotating disk 138 away from the rotating rod 133. The middle parts of both ends of the central ring 106 are fixedly connected to the guide rod 103. The outer periphery of the guide rod 103 is slidably connected to the limit seat 139. The limit seat 139 is fixedly connected to the inner side of the horizontal square tube 127. The boss 140 is provided on the inner side of the central ring 106. One end of the guide rod 103 is fixedly connected to the piston plate 134.

[0036] Furthermore, in a specific implementation, during the use of the transformer, the surface area of ​​the housing 101 can be effectively increased by the heat dissipation fins 104 and the heat dissipation fins 111 around the housing 101, thereby achieving auxiliary heat dissipation of the transformer. The guide wheels 132 on the heat dissipation fins 111 on both sides can directly feel the wind from all directions. The airflow blowing over will directly drive the guide wheel 132 to rotate, and the guide wheel 132 will drive the rotating rod 133 to rotate synchronously. The rotating rod 133 can drive the turntable 138 to rotate. When the turntable 138 rotates, it will cooperate with the central ring 106 through the boss 140 fixed at the end, thereby driving the guide rod 103 It moves back and forth. When the guide rod 103 moves, it will drive the piston plate 134 on one side to move. Through the fixing rod 129 and the connecting column 130, all the piston plates 134 on one side will be driven to move synchronously. When the piston plate 134 moves inside the horizontal square cylinder 127, it will drive the insulating oil inside the horizontal square cylinder 127 to flow, so that the insulating oil inside the shell 101 can remain in a flowing state. When the insulating oil flows inside the horizontal square cylinder 127, it will pass through the recessed bin 110. When passing through the recessed bin 110, the insulating oil inside the horizontal square cylinder 127 will be separated from the rest of the insulating oil inside the shell 101, and will be in more direct contact with the outside world, thereby effectively improving the heat dissipation effect of the insulating oil.

[0037] Among them, the front and rear sides of the shell 101 are fixedly connected to the concave bin 110, the middle part of one side of the concave bin 110 is fixedly connected to the heat dissipation fin 2 111, the middle part of the heat dissipation fin 2 111 on both sides is rotatably connected to the rotating rod 133, the middle part of the heat dissipation fin 2 111 on the middle side is rotatably connected to the rotating rod 135, the upper and lower parts of the inner side of the middle concave bin 110 are fixedly connected to the limiting cylinder 126, the inner side of the limiting cylinder 126 is rotatably connected to the blade 128, and the outer periphery of the blade 128 is away from the end of the limiting cylinder 126. The driven bevel gear 131 is fixedly connected to each of the rotating rods 135. The ends of the rotating rods 135 away from the second heat sink fin 111 penetrate the side wall of the horizontal cylinder 127 and are rotatably connected to the horizontal cylinder 127. The ends of the rotating rods 135 away from the second heat sink fin 111 are fixedly connected to the impeller 137. The impeller 137 is arranged inside the horizontal cylinder 127. The middle part of the outer periphery of the rotating rods 135 is fixedly connected to the driving bevel gear 141. The upper and lower parts of one side of the driving bevel gear 141 are meshed with the driven bevel gear 131.

[0038] Furthermore, in a specific implementation, when the insulating oil flows inside the horizontal square cylinder 127, it will drive the impeller 137 encountered to rotate. When the impeller 137 rotates, it will drive each rotating rod 135 to rotate. When the rotating rod 135 rotates, it will drive the driven bevel gear 131 meshing with it to rotate synchronously through the active bevel gear 141 fixed in the middle. When the driven bevel gear 131 rotates, it will drive the upper and lower blades 128 to rotate synchronously. When the blades 128 rotate, they will disturb the air inside the recessed bin 110 to form an airflow, thereby improving the heat dissipation speed and heat dissipation effect of the insulating oil passing through the recessed bin 110.

[0039] Working principle:

[0040] In actual use, people can realize voltage conversion of current through the transformer core 109. During the operation of the transformer core 109, the heat dissipation protection of the transformer core 109 can be realized through the insulating oil inside the shell 101. During the use of the transformer, the surface area of ​​the shell 101 can be effectively increased by the heat dissipation fins 104 and the heat dissipation fins 2 111 around the shell 101, thereby realizing auxiliary heat dissipation of the transformer. The guide wheels 132 on the heat dissipation fins 2 111 on both sides can directly feel the wind from all directions. The airflow blowing over will directly drive the guide wheel 132 to rotate, and the guide wheel 132 will drive the rotating rod 133 to rotate synchronously, and the rotating rod 133 can drive the turntable 138 to rotate. When the turntable 138 rotates, the convex column 140 fixed at the end cooperates with the central ring 106, thereby driving the guide rod 103 to move back and forth. When the guide rod 103 moves, it drives the piston plate 134 on one side to move, and through the fixed rod 129 and the connecting column 130, all the piston plates 134 on one side will be driven to move synchronously. When the piston plate 134 moves inside the horizontal cylinder 127, it drives the insulating oil inside the horizontal cylinder 127 to flow, so that the insulating oil inside the shell 101 can remain in a flowing state. When the insulating oil flows inside the horizontal cylinder 127, it will pass through the concave bin 110. When passing through the concave bin 110 section, the insulating oil inside the horizontal cylinder 127 will be separated from the rest of the insulating oil inside the shell 101, and will be in more direct contact with the outside world. And it can effectively improve the heat dissipation effect of the insulating oil. In this process, when the insulating oil flows inside the horizontal cylinder 127, it will drive the impeller 137 encountered to rotate. When the impeller 137 rotates, it will drive each rotating rod 135 to rotate. When the rotating rod 135 rotates, it will drive the driven bevel gear 131 meshing with it to rotate synchronously through the active bevel gear 141 fixed in the middle. When the driven bevel gear 131 rotates, it will drive the upper and lower blades 128 to rotate synchronously. When the blades 128 rotate, they will disturb the air inside the concave bin 110 to form an airflow, thereby improving the heat dissipation speed and heat dissipation effect of the insulating oil passing through the concave bin 110. During the operation of the transformer core 109, the heat conducting frame 110 around the transformer core 109 is used. 12 can form an enclosing heat-conducting layer around the transformer core 109, and the heat of the insulating oil around the transformer core 109 can be quickly transferred to the outside of the shell 101 through the heat-conducting frame 112. At the same time, the heat-sensitive gas inside the side tube 108 can be heated through the heat-conducting frame 142. After the heat-sensitive gas expands due to the heat, it will push the piston block 118 upward, thereby driving the cross bar 115 and the heat dissipation fin 104 to deflect through the connecting rod 105 fixed on the top. The heat-conducting sheet 107 on the upper part of the side tube 108 can dissipate heat to the upper space of the side tube 108, so that the piston block 118 will retract. At this time, under the joint action of the connecting rod 105 and gravity, the heat dissipation fin 104 will return to its original position. During the operation of the transformer core 109,The heat received by the bottom of the side tube 108 continues to cause the piston block 118 to circulate and form a continuous action, driving the heat dissipation fin 104 to continuously deflect, thereby directly disturbing the surrounding airflow through the heat dissipation fin 104 to improve the heat dissipation effect. At the same time, when there is wind outside, the continuous deflection of the heat dissipation fin 104 can form continuous and different guidance for the wind force airflow, so that the transformer can receive more comprehensive heat dissipation. During the deflection of the heat dissipation fin 104, the cross bar 115 will deflect accordingly, causing the sliding bar 124 inside the cross bar 115 to slide back and forth inside the cross bar 115. During the sliding of the sliding bar 124, the guide groove 123 on the inner side of the sliding bar 124 will drive the various rotating shafts 121 to rotate through the tooth grooves 122 engaged therewith. When the rotating shaft 121 rotates, the outer rotating plate 117 will disturb the airflow between the heat dissipation fin 104, thereby further improving the heat dissipation effect of the heat dissipation fin 104, which is beneficial for practical use.

[0041] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil-immersed transformer, comprising a housing (101), characterized in that: A transformer core (109) is installed in the middle of the housing (101), and evenly distributed heat dissipation fins (104) are provided on both sides of the housing (101). The upper and lower parts of the heat dissipation fins (104) are fixedly connected to cross bars (115), and the interior of the cross bars (115) is slidably connected to slide bars (124). The middle of the slide bars (124) is provided with guide grooves (123), and counterweights are installed at both ends of the slide bars (124). The heat dissipation fins (104) are fixedly connected to the upper and lower parts of the cross bars (115). An opening (120) is provided in the middle, and a rotating shaft (121) is rotatably connected to the middle of the opening (120), and a rotating plate (117) is fixedly connected to one side of the middle of the rotating shaft (121). Tooth grooves (122) are provided on the upper and lower parts of the outer periphery of the rotating shaft (121), and the rotating shaft (121) is meshed and connected with the guide groove (123) through the tooth groove (122). The corners of the housing (101) are fixedly connected to a connecting block (114), and the connecting block (114) is away from the housing ( 101) is fixedly connected to a side tube (108), a heat conducting frame (112) is provided on the outside of the transformer core (109), a heat transfer frame (142) is installed at the corner end of the heat conducting frame (112), the heat transfer frame (142) is arranged on one side of the inside of the side tube (108), a heat conducting spacer (119) is installed on one side of the middle of the side tube (108), and a piston cylinder (116) is installed on the side of the heat conducting spacer (119) away from the heat transfer frame (142). A piston block (118) is provided inside the piston cylinder (116), and one end of the piston block (118) away from the heat transfer frame (142) is fixedly connected to a connecting rod (105), and one end of the connecting rod (105) away from the piston block (118) passes through the end of the side cylinder (108), and the connecting rod (105) is slidably connected to the side cylinder (108), and one end of the connecting rod (105) away from the piston block (118) is connected to the cross bar (115) through a universal ball connector.

2. The oil-immersed transformer according to claim 1, characterized in that: A top cover (102) is installed on the top of the shell (101) in the middle part, and the outer periphery of the piston cylinder (116) is fixedly connected with uniformly distributed heat conducting plates (107), and the ends of the heat conducting plates (107) pass through one side of the outer periphery of the side cylinder (108). Both sides of the sliding rod (124) are slidably connected to the limit strips (125), and the limit strips (125) are fixedly connected to the middle of both sides inside the cross bar (115). The corners of the heat conducting frame (112) pass through the connecting block (114), and the heat dissipating fins (104) in the middle are fixedly connected to the rotating frame (113), and the rotating frame (113) is rotatably connected to the middle of both sides of the shell (101). The ends of the connecting rod (105) are set as spring sections.

3. The oil-immersed transformer according to claim 1, characterized in that: The front and rear sides of the housing (101) are fixedly connected to a recessed bin (110), the middle of one side of the recessed bin (110) is fixedly connected to a second heat sink fin (111), the middle of the second heat sink fin (111) on both sides is rotatably connected to a rotating rod (133), and the middle of the second heat sink fin (111) on the middle side is rotatably connected to a rotating rod (135).

4. The oil-immersed transformer according to claim 3, characterized in that: A plurality of transverse tubes (127) are passed through the middle of the recessed bin (110), piston plates (134) are slidably connected to both sides of the interior of the transverse tubes (127), the middle parts of adjacent piston plates (134) are connected by fixing rods (129), and the fixing rods (129) are connected by connecting columns (130), and a plurality of through holes (136) are opened on the upper and lower sides of the middle part of the piston plate (134).

5. The oil-immersed transformer according to claim 4, characterized in that: The middle portion of the outer periphery of the rotating rod (133) is fixedly connected to a guide wheel (132), the ends of the rotating rod (133) pass through the wall of the horizontal square cylinder (127) and are rotatably connected to the horizontal square cylinder (127), the ends of the rotating rod (133) are fixedly connected to a rotating disk (138), and the middle portion of one end of the rotating disk (138) away from the rotating rod (133) is fixedly connected to a protruding column (140).

6. The oil-immersed transformer according to claim 5, characterized in that: A central ring (106) is provided on one side of the turntable (138) away from the turn rod (133), and the middle parts of both ends of the central ring (106) are fixedly connected to the guide rod (103), and the outer periphery of the guide rod (103) is slidably connected to the limit seat (139), and the limit seat (139) is fixedly connected to the inner side of the horizontal square tube (127).

7. The oil-immersed transformer according to claim 6, characterized in that: The protruding columns (140) are all arranged on the inner side of the central ring (106), and one end of each side of the guide rod (103) is fixedly connected to the piston plate (134).

8. The oil-immersed transformer according to claim 7, characterized in that: The upper and lower parts of the inner side of the middle recessed bin (110) are fixedly connected to the limiting cylinder (126), the inner side of the limiting cylinder (126) is rotatably connected to a blade (128), and the outer periphery of one end of the blade (128) away from the limiting cylinder (126) is fixedly connected to a driven bevel gear (131).

9. The oil-immersed transformer according to claim 3, characterized in that: The end of the rotating rod (135) away from the second heat dissipation fin (111) passes through the side wall of the horizontal square tube (127) and is rotatably connected to the horizontal square tube (127). The end of the rotating rod (135) away from the second heat dissipation fin (111) is fixedly connected to the impeller (137).

10. The oil-immersed transformer according to claim 9, characterized in that: The impellers (137) are all arranged inside the horizontal square tube (127), and the middle part of the outer periphery of the rotating rod (135) is fixedly connected to the driving bevel gear (141), and the upper and lower parts of one side of the driving bevel gear (141) are meshed and connected with the driven bevel gear (131).

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