Barrel type transformer oil tank
By setting up oil guide box and magnetic steel plate inside the transformer oil tank, the problems of poor oil flow circulation and welding difficulty in the existing technology are solved, and the transformer oil temperature control and heat dissipation effect are improved, ensuring product quality and reliability.
Patent Information
- Application Number
- CN202421050297.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-15
AI Technical Summary
When the existing barrel transformer oil tank reduces the oil temperature of the top layer of the transformer, the oil flow circulation of the lower radiator oil pipe becomes worse, resulting in an increase in the average oil temperature of the transformer, and increasing the difficulty of welding elbows and welding quality is difficult to control, which can easily cause oil leakage. And the overall width increases.
The oil guide box is installed inside the transformer oil tank, and the oil inlet is guided to the lower part of the transformer. Through the cooperation of multiple parallel oil inlets and the oil inlet box, oil flow guidance is achieved, the overall oil temperature of the transformer is reduced, and the magnetic steel plate is used. The material is used to reduce stray losses, and the oil conduction box is detachable to avoid affecting the welding and painting of crude oil pipes.
Effectively reduce the top layer and average oil temperature of the transformer, improve the heat dissipation effect of the heat dissipation center, reduce stray losses in the box wall, ensure product quality and reliability, avoid heat from the lower part of the oil tank, and simplify the installation and welding process of the oil guide box.
Smart Images
Figure CN222260740U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transformer oil tanks, in particular to a barrel-type transformer oil tank. Background Art
[0002] The barrel type transformer oil tank is an important part of the transformer, usually used to store transformer oil and other parts of the transformer. The main functions of the transformer oil tank are: to store transformer oil and maintain its normal temperature to ensure the stable operation of the transformer, to help the transformer dissipate heat through the circulation cooling effect of the oil, to ensure its stable operation, to provide electrical insulation protection, to effectively isolate the high-voltage and low-voltage parts of the transformer, to ensure safe operation, and to absorb the energy of the fault arc when the transformer fails, to prevent fire or explosion, and to protect the safety of the transformer and personnel.
[0003] At present, the existing barrel-type transformer oil tank usually raises the heat dissipation center of the transformer to reduce the oil temperature at the top layer of the transformer. Solution 1: Raise the height of the oil inlet hole at the lower end. However, with this solution, the oil flow circulation in the area below the lower radiator oil pipe becomes worse, resulting in an increase in the average oil temperature of the transformer, which in turn causes the temperature rise of the transformer winding to increase. Solution 2: Keep the height of the lower oil inlet and weld an upwardly bent pipe on the oil pipe at the oil inlet. The elbow is composed of two sections of elbows welded together to raise the pipe head. With this solution, two sections of elbows need to be added to the lower oil pipe of the transformer, which increases the difficulty of welding, makes it difficult to control the welding quality, and easily causes oil leakage. At the same time, because the use of transition elbows increases the overall length of the transformer radiator pipe head, the width of the transformer becomes larger. Utility Model Content
[0004] In order to overcome at least one of the defects of the prior art, the utility model provides a barrel-type transformer oil tank. An oil guide box is arranged inside the transformer oil tank to guide the oil entering the oil inlet to the lower part of the transformer, which can effectively reduce the oil temperature of the top layer of the transformer and control the average oil temperature of the transformer.
[0005] The technical solution adopted by the utility model to solve the problem is:
[0006] A barrel-type transformer oil tank comprises an oil tank, wherein the oil tank is provided with a plurality of oil outlets arranged in parallel at the upper ends on opposite sides of the oil tank, the oil tank is provided with a plurality of oil inlets arranged in parallel near the middle of the lower ends on opposite sides of the oil outlets, oil pipes are provided on the oil outlets and the oil inlets on the outside of the oil tank, the oil tank is provided with at least one oil guide box detachably connected to the inner walls on opposite sides of the oil inlet, the oil guide box covers the oil inlet, the bottom end of the oil guide box extends to near the bottom of the oil tank, and the oil guide box is used to guide the flow direction of the oil.
[0007] Through the above scheme, the heat dissipation center of the transformer can be improved, and the oil entering the oil inlet can be guided to the lower part of the transformer through the oil guide box, so as to effectively control the overall oil temperature of the transformer. At the same time, the layout of the external oil pipes will not be changed, so as to improve product reliability and ensure product quality.
[0008] Furthermore, at least two oil guide boxes are provided on the same side, and the number of the oil guide boxes is no more than the number of the oil inlets on the same side.
[0009] Through the above further scheme, the oil is distributed according to the ratio of the number of oil guide boxes to the number of oil inlets, so that the oil entering the oil tank from each oil inlet can be guided through each oil guide box, or the oil entering the oil tank from two oil inlets can be guided through one oil guide box, or the oil entering the oil tank from three oil inlets can be guided through one oil guide box, etc.
[0010] Furthermore, the oil guide box located on the same side is provided with one.
[0011] Through the above further solution, the oil entering the oil tank through the oil inlet on the same side can be guided through the same oil guide box.
[0012] Furthermore, the lower end of the oil guide box is provided with an opening for oil outlet.
[0013] Through the above further solution, the oil entering the oil guide box can flow out from the lower opening and flow to the bottom of the oil tank, thereby increasing the oil flow circulation in the overall area of the oil tank, thereby reducing the average oil temperature of the transformer.
[0014] Furthermore, an oil hole for oil outlet is provided on the side of the oil guide box near the bottom.
[0015] Through the above further scheme, the oil entering the oil guide box can flow out from the lower oil hole and flow to the bottom of the oil tank. The flow at the bottom of the oil tank can be controlled by setting the size of the oil hole, and the oil flow circulation in the overall area of the oil tank can be increased, thereby reducing the average oil temperature of the transformer.
[0016] Furthermore, the oil guide box is made of non-magnetic steel plate.
[0017] Through the above further solution, the non-magnetic steel plate can shield the leakage magnetic field at the bottom of the transformer coil from entering the tank wall, thereby reducing the stray loss of the oil tank and avoiding heating of the lower tank wall.
[0018] Furthermore, the oil guide box is detachably connected to the inner wall of the oil tank via a plurality of fixing parts.
[0019] Through the above further solution, the oil guide box can be detachably installed through the fixing piece, which does not affect the welding of the crude oil pipe and the painting of the oil tank, thereby ensuring product quality.
[0020] Furthermore, the fixing member includes a stud and a nut, one end of the stud is fixedly mounted on the inner wall of the oil tank, a mounting hole is provided on the side of the oil guide box, and the other end of the stud passes through the mounting hole and is threadedly connected to the nut.
[0021] Through the above further scheme, the number of mounting holes is consistent with the number of fixings, and the spacing between the mounting holes is appropriately arranged according to the actual distance. One end of the stud is welded to the inner wall of the oil tank, and the other end can be threadedly connected to the nut. The oil guide box can be removed or installed by adjusting the nut, which is simple and convenient.
[0022] In summary, the barrel-type transformer oil tank provided by the utility model has the following technical effects:
[0023] 1. By setting an oil guide box inside the transformer oil tank, the oil entering the oil inlet is guided to the lower part of the transformer, which can effectively reduce the oil temperature at the top of the transformer and control the average oil temperature of the transformer;
[0024] 2. Through non-magnetic steel plate shielding, the stray loss and temperature rise of the box wall can be reduced;
[0025] 3. The oil guide box is detachable and does not affect the welding of the original radiator pipe joint and the painting of the oil tank, thus ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.
[0027] Figure 1 It is a schematic diagram of the overall vertical cross-sectional structure of the first scheme in the background technology of the utility model;
[0028] Figure 2 It is a schematic diagram of the overall vertical cross-sectional structure of the second scheme in the background technology of the utility model;
[0029] Figure 3 It is a schematic diagram of the overall vertical cross-sectional structure in Embodiment 1 and Embodiment 5 of the present utility model;
[0030] Figure 4 This is a schematic diagram of the structure of the fixing member in Embodiment 1 of the utility model;
[0031] Figure 5 This is a schematic diagram of the overall transverse cross-sectional structure of Example 1 of the utility model;
[0032] Figure 6 The schematic diagram of the structure of the oil guide box in Embodiment 2 of the utility model and the schematic diagram of the structure of the oil guide box provided with oil holes in Embodiment 5;
[0033] Figure 7 This is a schematic diagram of the oil guide box provided with an opening structure in Embodiment 4 of the utility model;
[0034] Figure 8 The schematic diagram of the structure of the oil guide box in Embodiment 3 of the utility model and the schematic diagram of the structure of the oil guide box provided with the oil hole in Embodiment 5;
[0035] Fig. 9 This is a schematic diagram of the overall vertical cross-sectional structure of Embodiment 4 of the present utility model;
[0036] Fig.10 This is a schematic diagram of the opening structure of the oil guide box in Example 4 of the utility model.
[0037] In the figure: 1. oil tank; 11. oil outlet; 12. oil inlet; 13. oil pipe; 14. elbow; 2. oil guide box; 21. opening; 22. oil hole; 23. mounting hole; 3. fixing piece; 31. stud; 32. nut. DETAILED DESCRIPTION
[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0039] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0040] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.
[0041] Reference Figure 1 As shown, scheme 1 in the background technology includes an oil tank 1, wherein the oil tank 1 is provided with a plurality of oil outlets 11 arranged in parallel on the upper ends on two opposite sides, the oil tank 1 is provided with a plurality of oil inlets 12 arranged in parallel near the middle of the lower ends on two opposite sides of the oil outlet 11, and the outside of the oil tank 1 is provided with oil pipes 13 on the oil outlets 11 and the oil inlets 12.
[0042] Reference Figure 2 As shown, scheme 2 in the background technology includes an oil tank 1, wherein the oil tank 1 is provided with a plurality of oil outlets 11 arranged in parallel on the upper ends on opposite sides thereof, the oil tank 1 is provided with a plurality of oil inlets 12 arranged in parallel on the lower ends on opposite sides thereof, an oil pipe 13 is provided on the outside of the oil tank 1 at the oil outlet 11 and the oil inlet 12, an upwardly bent pipe 14 is welded to the oil pipe 13 on the oil inlet 12, and the bent pipe 14 is composed of two sections of elbows welded together.
[0043] Embodiment 1:
[0044] See also Figure 3-Figure 5 As shown, the utility model discloses a barrel-type transformer oil tank, including an oil tank 1, wherein the oil tank 1 is provided with a plurality of oil outlets 11 arranged in parallel at the upper end on both sides opposite to each other, the oil tank 1 is provided with a plurality of oil inlets 12 arranged in parallel near the middle of the lower end on both sides opposite to the oil outlet 11, the oil tank 1 is provided with an oil pipe 13 on the oil outlet 11 and the oil inlet 12 on the outside of the oil tank 1, and the inner wall on both sides opposite to the oil inlet 12 of the oil tank 1 is connected with at least one oil guide box 2 through a plurality of fixing members 3, which can be passed through The fixing part 3 enables the oil guide box 2 to be detachably installed, which does not affect the welding of the crude oil pipe 13 and the painting of the oil tank 1, thereby ensuring product quality. The oil guide box 2 covers the oil inlet 12, and the bottom end of the oil guide box 2 extends to near the bottom of the oil tank 1. The oil guide box 2 is used to guide the flow direction of the oil, which can improve the heat dissipation center of the transformer while guiding the oil entering the oil inlet 12 to the lower part of the transformer through the oil guide box 2, effectively controlling the overall oil temperature of the transformer, while not changing the layout of the external oil pipe 13, improving product reliability and ensuring product quality.
[0045] Among them, the oil guide box 2 is made of 20Mn23Al non-magnetic steel plate, which can shield the leakage magnetic field at the bottom of the transformer coil from entering the box wall, reduce the stray loss of the oil tank 1, and avoid heating of the lower box wall of the oil tank 1.
[0046] Among them, the fixing member 3 includes a stud 31 and a nut 32, one end of the stud 31 is welded to the inner wall of the oil tank 1, and a mounting hole 23 is provided on the side of the oil guide box 2. The other end of the stud 31 passes through the mounting hole 23 and is threadedly connected with the nut 32. The number of mounting holes 23 is consistent with the number of fixing members 3, and the spacing between the mounting holes 23 is appropriately arranged according to the actual distance. One end of the stud 31 is welded to the inner wall of the oil tank 1, and the other end can be threadedly connected to the nut 32. The oil guide box 2 can be disassembled or installed by adjusting the nut 32, which is simple and convenient.
[0047] Embodiment 2:
[0048] See also Figure 6 As shown, on the basis of Example 1, the oil guide boxes 2 located on the same side are provided with at least two, and the number is not more than the oil inlets 12 located on the same side, and are allocated according to the ratio of the number of oil guide boxes 2 to the number of oil inlets 12, so that the oil entering the oil tank 1 from each oil inlet 12 can be guided through each oil guide box 2, or the oil entering the oil tank 1 from two oil inlets 12 can be guided through one oil guide box 2, or the oil entering the oil tank 1 from three oil inlets 12 can be guided through one oil guide box 2, and so on.
[0049] Embodiment 3:
[0050] See also Figure 8 As shown, on the basis of Example 1, the oil guide box 2 located on the same side is provided with a device that can guide the oil entering the oil tank 1 through the oil inlet 12 on the same side through the same oil guide box 2, thereby increasing the fluidity in the oil guide box 2 and reducing unnecessary parts. The structure is simple and easy to promote.
[0051] Embodiment 4:
[0052] See also Figure 7 , Fig. 9 and Fig.10 As shown, on the basis of Example 2 or Example 3, the lower end of the oil guide box 2 is provided with an opening 21 for oil outlet, which can make the oil entering the oil guide box 2 flow out from the lower end opening 21, so that the oil flows to the bottom of the oil tank 1, increasing the overall regional oil flow circulation in the oil tank 1, thereby reducing the average oil temperature of the transformer.
[0053] Embodiment 5:
[0054] See also Figure 3 , Figure 6 and Figure 8As shown, on the basis of Example 2 or Example 3, an oil hole 22 for oil outlet is provided on the side of the oil guide box 2 near the bottom, so that the oil entering the oil guide box 2 can flow out from the lower oil hole 22 and flow to the bottom of the oil tank 1. By setting the size of the oil hole 22, the flow at the bottom of the oil tank 1 can be controlled, and the oil flow circulation in the overall area of the oil tank 1 can be increased, thereby reducing the average oil temperature of the transformer.
[0055] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A barrel-type transformer oil tank, comprising an oil tank (1), wherein the oil tank (1) is provided with a plurality of oil outlets (11) arranged in parallel at the upper ends on opposite sides thereof, the oil tank (1) is provided with a plurality of oil inlets (12) arranged in parallel at the lower ends near the middle of opposite sides thereof, and the oil tank (1) is provided with oil pipes (13) at the oil outlets (11) and the oil inlets (12) on the outside thereof, characterized in that: The oil tank (1) is provided with an oil inlet (12), and at least one oil guide box (2) is detachably connected to the inner walls on both sides opposite to each other. The oil guide box (2) covers the oil inlet (12), and the bottom end of the oil guide box (2) extends to near the bottom of the oil tank (1). The oil guide box (2) is used to guide the flow of oil.
2. A barrel-type transformer oil tank according to claim 1, characterized in that: The oil guide boxes (2) located on the same side are provided with at least two, and the number is no more than the number of the oil inlets (12) located on the same side.
3. The barrel-type transformer oil tank according to claim 1, characterized in that: The oil guide box (2) located on the same side is provided with one.
4. A barrel-type transformer oil tank according to any one of claims 2-3, characterized in that: The lower end of the oil guide box (2) is provided with an opening (21) for oil discharge.
5. A barrel-type transformer oil tank according to any one of claims 2-3, characterized in that: An oil hole (22) for oil discharge is provided on the side of the oil guide box (2) near the bottom.
6. The barrel-type transformer oil tank according to claim 1, characterized in that: The oil guide box (2) is made of a non-magnetic steel plate.
7. The barrel-type transformer oil tank according to claim 1, characterized in that: The oil guide box (2) is detachably connected to the inner wall of the oil tank (1) via a plurality of fixing members (3).
8. The barrel-type transformer oil tank according to claim 7, characterized in that: The fixing member (3) comprises a stud (31) and a nut (32); one end of the stud (31) is fixedly mounted on the inner wall of the oil tank (1); a mounting hole (23) is provided on the side of the oil guide box (2); the other end of the stud (31) passes through the mounting hole (23) and is threadedly connected to the nut (32).