Oil-immersed distribution transformer rack

Abstract

The invention discloses an oil-immersed distribution transformer rack, which is characterized in that wall plates on the front side and the rear side of an oil storage tank are respectively provided with a plurality of corrugated sheets, the plurality of corrugated sheets are vertically arranged at equal intervals, and an oil level thermometer is fixed on a transformer tank cover and extends into the oil storage tank; an axial flow fan is fixed on the rack main body, an air outlet of the axial flow fan is arranged opposite to the corrugated sheet, and the center of the axial flow fan is as high as the center of the corrugated sheet; and the oil level thermometer and the axial flow fan are respectively in signal connection with the controller. The oil level thermometer continuously monitors the oil temperature change, sends data to the controller and intelligently adjusts the working state of the axial flow fan, so that the transformer is cooled through forced air cooling and blows away heat from the corrugated sheets and the whole oil tank wall during overload operation, and it is ensured that the transformer is always kept within the optimal working temperature range; the whole system forms a closed-loop control system, and the heat dissipation performance of the oil-immersed distribution transformer is obviously improved.

Description

Technical Field

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

[0002] With the rapid development of power systems and the accelerated advancement of urbanization, oil-immersed distribution transformers play a vital role in power transmission and distribution. However, traditional oil-immersed distribution transformers face the problem of low heat dissipation efficiency during use, especially under high load operation or high ambient temperature, the internal temperature of the transformer is prone to rise, thus affecting its performance and life. In addition, the existing transformer stand design often ignores the optimization of the transformer heat dissipation system, resulting in the heat cannot be effectively dissipated to the external environment in a timely manner, further exacerbating the temperature rise problem inside the transformer.

[0003] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide an oil-immersed distribution transformer stand to solve the problem of insufficient heat dissipation performance of the transformer in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an oil-immersed distribution transformer stand, comprising a transformer body, an axial flow fan, a controller, a cross arm and a stand body: the transformer body comprises a transformer box cover, an oil storage tank, an oil level thermometer and a corrugated sheet, a plurality of the corrugated sheets are respectively arranged on the wall panels on the front and rear sides of the oil storage tank, and the plurality of the corrugated sheets are vertically arranged at equal intervals, the top opening of the oil storage tank is covered with the transformer box cover, the oil level thermometer is fixed on the transformer box cover and extends into the oil storage tank; the cross arm is horizontally arranged on the stand body, the axial flow fans are fixed at both ends of the cross arm, the air outlet of each axial flow fan is arranged directly opposite to the corrugated sheet, and the center of the axial flow fan is at the same height as the center of the corrugated sheet; the oil level thermometer and the axial flow fan are respectively connected to the controller signal.

[0006] In one embodiment of the present invention, the stand body includes a concrete pillar and a channel steel, the channel steel is mounted on the concrete pillar, the center of the channel steel supports the transformer body, and the cross arms are fixed to both sides of the transformer body.

[0007] The beneficial effect of the above embodiment is that by using concrete pillars and channel steel as the main body of the stand, the stability and load-bearing capacity of the entire structure are enhanced. The center of the channel steel supports the transformer body, and the cross arms are fixed on the left and right sides, so that the main body of the stand is evenly stressed and maintains overall stability.

[0008] In one embodiment of the present invention, the controller includes a control box, a clamp, a fixing hole and a control component. The control component is arranged in the control box. The fixing hole is opened on the back plate of the control box. The clamp passes through the fixing hole and is tied to the concrete pillar.

[0009] The beneficial effect of the above embodiment is that the control box is fixed by the clamp, so that the controller can be firmly installed on the concrete pillar, thereby ensuring the stability and safety of the controller.

[0010] In one embodiment of the present invention, the transformer body further comprises a box edge and a hanging bracket, wherein the box edge is connected end to end and is arranged at the bottom of the transformer box cover, and the inner wall of the box edge is tightly attached to the outer edge of the top opening of the oil storage tank, and the hanging bracket is fixedly arranged on the corner of the box edge.

[0011] The beneficial effects of the above embodiment are: the box edge makes the connection between the transformer box cover and the oil storage tank tighter, preventing oil leakage; at the same time, the setting of the lifting rack facilitates the lifting and movement of the transformer.

[0012] In one embodiment of the present invention, it further includes hanging plates arranged in groups, and the hanging plates are symmetrically arranged on the top of the transformer box cover with respect to the center line of the transformer box cover.

[0013] The beneficial effect of the above embodiment is that the hanging plates arranged in groups are symmetrically arranged about the center line of the transformer box cover, which helps to disperse the weight and improve the stability and safety during hoisting.

[0014] In one embodiment of the present invention, the transformer body further includes an intelligent oil level gauge and a flange. The flange is provided on the transformer box cover, and the intelligent oil level gauge is detachably mounted on the flange.

[0015] The beneficial effect of the above embodiment is that the intelligent oil level gauge can automatically release the pressure when the internal pressure of the oil tank is too high, thereby preventing safety accidents caused by excessive pressure.

[0016] In one embodiment of the present invention, it further comprises a pressure transmitter elbow disposed on the transformer box cover, wherein the pressure transmitter elbow and the intelligent oil level gauge are respectively disposed at opposite ends of the transformer box cover.

[0017] The beneficial effect of the above embodiment is that the pressure transmitter elbow and the intelligent oil level gauge are respectively arranged at opposite ends of the transformer box cover, which is conducive to more accurate monitoring and control of the pressure change in the oil storage tank.

[0018] In one embodiment of the present invention, it also includes a conical rubber plug and a detection hole opened on the transformer box cover, the oil level thermometer is inserted into the conical rubber plug, the conical rubber plug is sealed in the detection hole, and the detection end of the oil level thermometer extends into the oil storage tank.

[0019] The beneficial effects of the above embodiment are: the conical rubber plug seals the detection hole, the oil level thermometer is inserted therein and extends into the oil storage tank, and its excellent sealing performance ensures the accuracy of the thermometer and prevents external impurities from entering the oil storage tank.

[0020] In one embodiment of the present invention, it further includes a high-voltage terminal, a low-voltage terminal, a grounding copper busbar and a grounding seat. The high-voltage terminals and the low-voltage terminals are arranged in a row on the transformer box cover. The grounding seat is arranged on the bottom plate of the oil storage tank and is connected to the low-voltage terminal through the grounding copper busbar.

[0021] In one embodiment of the present invention, a reinforcing steel bar is further included, and two ends of the reinforcing steel bar are respectively fixed on the two cross arms.

[0022] The beneficial effect of the above embodiment is that the reinforced steel bars connect the cross arms into a whole, further improving the structural strength of the cross arms and making the entire stand more stable and durable.

[0023] As described above, the oil-immersed distribution transformer stand of the present invention has the following beneficial effects: during the operation of the transformer, with the change of load and the influence of ambient temperature, a certain amount of heat will be generated inside the transformer, the oil level thermometer continuously monitors the oil temperature change and sends the data to the controller, and intelligently adjusts the working state of the axial flow fan, so that the transformer can be cooled by forced air cooling during overload operation, and the heat is blown away from the corrugated sheet and the entire oil tank wall to ensure that the transformer always remains within the optimal operating temperature range; the entire system forms a closed-loop control system, which significantly improves the heat dissipation performance of the oil-immersed distribution transformer and realizes the automated management and maintenance of the transformer heat dissipation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A partial structural schematic diagram of an oil-immersed distribution transformer stand provided by the present invention;

[0026] Figure 2A partial structural schematic diagram of an oil-immersed distribution transformer stand provided by the present invention;

[0027] Figure 3 A partial structural schematic diagram of an oil-immersed distribution transformer stand provided by the present invention;

[0028] Figure 4 A partial structural schematic diagram of an oil-immersed distribution transformer stand provided by the present invention;

[0029] Figure 5 A wiring diagram of the oil-immersed distribution transformer stand provided by the present invention.

[0030] Component number description

[0031] 1 Transformer body 13 Clamp

[0032] 2 Axial fan 14 Box edge

[0033] 3 Controller 15 Climbing

[0034] 4 cross arm 16 hanging board

[0035] 5 Main frame 17 Intelligent oil level gauge

[0036] 6 Transformer cover 18 Flange

[0037] 7 Oil storage tank 19 Pressure transmitter elbow

[0038] 8 Oil level thermometer 20 Conical rubber plug

[0039] 9 Corrugated sheet 21 High voltage terminal

[0040] 10 Concrete pillar 22 Low voltage terminal

[0041] 11 Channel steel 23 Grounding copper bar

[0042] 12 Control box 24 Ground socket DETAILED DESCRIPTION

[0043] The present invention provides an oil-immersed distribution transformer stand. To make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail below with reference to the accompanying drawings and examples.

[0044] In the description of the present invention, it should be understood that the terms "up, down, left, right, etc." indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and should not be understood as limiting the present invention; in addition, the terms "installation" and "connection" should be understood in a broad sense, and those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0045] See also Figures 1 to 5 The present invention provides an oil-immersed distribution transformer stand, comprising a transformer body 1, an axial flow fan 2, a controller 3, a cross arm 4 and a stand body 5: the transformer body 1 comprises a transformer cover 6, an oil storage tank 7, an oil level thermometer 8 and a corrugated sheet 9, a plurality of the corrugated sheets 9 are respectively arranged on the wall panels on the front and rear sides of the oil storage tank 7, and the plurality of the corrugated sheets 9 are vertically arranged at equal intervals, the top opening of the oil storage tank 7 is covered with the transformer cover 6, the oil level thermometer 8 is fixed on the transformer cover 6 and extends into the oil storage tank 7; the stand body 5 is horizontally provided with the cross arm 4, the two ends of the cross arm 4 are fixed with the axial flow fan 2, the air outlet of each axial flow fan 2 is arranged directly opposite to the corrugated sheet 9, and the center of the axial flow fan 2 is at the same height as the center of the corrugated sheet 9; the oil level thermometer 8 and the axial flow fan 2 are respectively connected to the controller 3 by signal.

[0046] In the present embodiment, the transformer body 1 further includes a box edge 14 and a hanging bracket 15. The box edge 14 is connected end to end and is arranged at the bottom of the transformer box cover 6. The inner wall of the box edge 14 is in close contact with the outer edge of the top opening of the oil storage tank 7. The hanging bracket 15 is fixedly arranged on the corner of the box edge 14. It can be understood that the box edge 14 makes the connection between the transformer box cover 6 and the oil storage tank 7 tighter, thereby preventing oil leakage. At the same time, the arrangement of the hanging bracket 15 facilitates the lifting and movement of the transformer. Optionally, it also includes hanging plates 16 arranged in groups. The hanging plates 16 are symmetrically arranged on the top of the transformer box cover 6 with respect to the center line of the transformer box cover 6, that is, the hanging plates 16 arranged in groups are symmetrically arranged with respect to the center line of the transformer box cover 6, which helps to disperse the weight and improve the stability and safety during lifting.

[0047] In detail, the transformer body 1 also includes an intelligent oil level gauge 17 and a flange 18. The flange 18 is provided on the transformer cover 6, and the intelligent oil level gauge 17 is detachably mounted on the flange 18. The intelligent oil level gauge 17 can automatically release the pressure when the internal pressure of the oil storage tank 7 is too high, thereby preventing safety accidents caused by excessive pressure. The intelligent oil level gauge 17 used in this embodiment is installed on the flange of the cover, and has the functions of monitoring the oil level, oil level and oil top temperature rise, and also has the function of pressure release. Please refer to Figure 2 and Figure 3 , and also includes a pressure transmitter elbow 19 arranged on the transformer box cover 6. The pressure transmitter elbow 19 and the intelligent oil level gauge 17 are respectively arranged at opposite ends of the transformer box cover 6. The pressure transmitter elbow 19 and the intelligent oil level gauge 17 are respectively arranged at opposite ends of the transformer box cover 6, which is conducive to more accurate monitoring and control of the pressure changes in the oil storage tank 7.

[0048] In more detail, it also includes a high-voltage terminal 21, a low-voltage terminal 22, a grounding copper busbar 23 and a grounding seat 24. The high-voltage terminals 21 and the low-voltage terminals 22 are arranged in a row on the transformer box cover 6. The grounding seat 24 is arranged on the bottom plate of the oil storage tank 7 and is connected to the low-voltage terminal 22 through the grounding copper busbar 23.

[0049] Please refer to Figure 4 , also includes a conical rubber plug 20 and a detection hole opened on the transformer box cover 6, the oil level thermometer 8 is penetrated by the conical rubber plug 20, the conical rubber plug 20 is sealed in the detection hole, and the detection end of the oil level thermometer 8 extends into the oil storage tank 7. It can be understood that the conical rubber plug 20 blocks the detection hole, the oil level thermometer 8 is penetrated therein and extends into the oil storage tank 7, and the accuracy of the thermometer is ensured by its excellent sealing performance.

[0050] The gantry body 5 includes concrete pillars 10 and channel steels 11. There are two concrete pillars 10. The channel steel 11 is erected between the two concrete pillars 10. The center of the channel steel 11 supports the transformer body 1. The cross arms 4 are fixed on the left and right sides of the transformer body 1. By using the concrete pillars 10 and the channel steels 11 as the gantry body 5, the stability and load-bearing capacity of the entire structure are enhanced. The center of the channel steel 11 supports the transformer body 1, and the cross arms 4 are fixed on the left and right sides, so that the gantry body 5 is evenly stressed and maintains overall stability.

[0051] In this embodiment, the controller 3 includes a control box 12, a clamp 13, a fixing hole and a control component. The control component is arranged in the control box 12. The fixing hole is opened on the back plate of the control box 12. The clamp 13 passes through the fixing hole and is fastened to the concrete pillar 10. That is, the control box 12 is fixed by the clamp 13, so that the controller 3 can be firmly installed on the concrete pillar 10, ensuring the stability and safety of the controller 3. Figure 5 The control assembly is connected to each electrical component respectively, and can intelligently control the axial flow fan in the oil-immersed distribution transformer in real time, thereby controlling the temperature of the transformer.

[0052] In detail, it also includes a reinforcing steel bar, the two ends of which are respectively fixed on the two cross arms 4; the reinforcing steel bar and the cross arms 4 form an I-shaped structure, and the reinforcing steel bar connects the cross arms 4 into a whole, further improving the structural strength of the cross arms 4, making the entire stand more stable and durable. Specifically, the reinforcing steel bar is a triangular steel, and the reinforcing steel bar is fixed to the cross arms 4 by screws, and the cross arms 4 are fixed to the channel steel 11 by screws.

[0053] In summary, the oil-immersed distribution transformer stand of the present invention generates a certain amount of heat inside the transformer during the operation of the transformer as the load changes and the ambient temperature is affected. The oil level thermometer 8 continuously monitors the oil temperature change and sends the data to the controller 3, and intelligently adjusts the working state of the axial flow fan 2, so that the transformer can be cooled by forced air cooling during overload operation, and the heat is blown away from the corrugated sheet 9 and the entire oil tank wall to ensure that the transformer always remains within the optimal operating temperature range; the entire system forms a closed-loop control system, which significantly improves the heat dissipation performance of the oil-immersed distribution transformer and realizes the automated management and maintenance of the heat dissipation process of the transformer. Therefore, the present invention effectively overcomes the various shortcomings of the prior art and has a high industrial utilization value.

[0054] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the present invention.

Claims

1. An oil-immersed distribution transformer stand, characterized in that: It includes a transformer body, an axial flow fan, a controller, a cross arm and a stand body: the transformer body includes a transformer box cover, an oil storage tank, an oil level thermometer and a corrugated sheet, a plurality of the corrugated sheets are respectively arranged on the wall panels on the front and rear sides of the oil storage tank, and the plurality of the corrugated sheets are vertically arranged at equal intervals, the top opening of the oil storage tank is covered with the transformer box cover, the oil level thermometer is fixed on the transformer box cover and extends into the oil storage tank; the cross arm is horizontally arranged on the stand body, the axial flow fans are fixed at both ends of the cross arm, the air outlet of each axial flow fan is arranged directly opposite to the corrugated sheet, and the center of the axial flow fan is at the same height as the center of the corrugated sheet; the oil level thermometer and the axial flow fan are respectively connected to the controller signal.

2. The oil-immersed distribution transformer stand according to claim 1, characterized in that: The stand body includes a concrete support and a channel steel, wherein the channel steel is mounted on the concrete support, the center of the channel steel supports the transformer body, and the cross arms are fixed to both the left and right sides of the transformer body.

3. The oil-immersed distribution transformer stand according to claim 2, characterized in that: The controller comprises a control box, a clamp, a fixing hole and a control component. The control component is arranged in the control box. The fixing hole is opened on the back plate of the control box. The clamp passes through the fixing hole and is fastened to the concrete pillar.

4. The oil-immersed distribution transformer stand according to claim 1, characterized in that: The transformer body also includes a box edge and a hanging hook. The box edge is connected end to end and is arranged at the bottom of the transformer box cover. The inner wall of the box edge is tightly attached to the outer edge of the top opening of the oil storage tank. The hanging hook is fixedly arranged on the corner of the box edge.

5. The oil-immersed distribution transformer stand according to claim 4, characterized in that: It also includes hanging plates arranged in groups, and the hanging plates are symmetrically arranged on the top of the transformer box cover with respect to the center line of the transformer box cover.

6. The oil-immersed distribution transformer stand according to claim 1, characterized in that: The transformer body further comprises an intelligent oil level gauge and a flange. The flange is arranged on the transformer box cover, and the intelligent oil level gauge is detachably mounted on the flange.

7. The oil-immersed distribution transformer stand according to claim 6, characterized in that: It also includes a pressure transmitter elbow arranged on the transformer box cover, and the pressure transmitter elbow and the intelligent oil level gauge are respectively arranged at opposite ends of the transformer box cover.

8. The oil-immersed distribution transformer stand according to claim 1, characterized in that: It also includes a conical rubber plug and a detection hole opened on the transformer box cover, the oil level thermometer is inserted into the conical rubber plug, the conical rubber plug is sealed in the detection hole, and the detection end of the oil level thermometer extends into the oil storage tank.

9. The oil-immersed distribution transformer stand according to claim 1, characterized in that: It also includes high-voltage terminals, low-voltage terminals, a grounding copper busbar and a grounding seat. The high-voltage terminals and the low-voltage terminals are arranged in rows on the transformer box cover. The grounding seat is arranged on the bottom plate of the oil storage tank and is connected to the low-voltage terminal through the grounding copper busbar.

10. The oil-immersed distribution transformer stand according to claim 1, characterized in that: It also includes a reinforcing steel bar, both ends of which are respectively fixed on the two cross arms.

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