Connecting pipe structure for connecting finned radiator and oil tank

Abstract

The utility model relates to a connecting pipe structure for connecting a finned radiator and an oil tank, which comprises an oil outlet pipe communicated with the top end face of the oil tank, the oil outlet pipe is communicated with a liquid inlet of the radiator, the middle section of the oil tank is communicated with a return pipe, the return pipe is communicated with a liquid outlet of the radiator, and the oil outlet pipe comprises a pipe body. A main pipeline communicated with the oil tank is formed in the pipe body, the main pipeline is communicated with a plurality of flow dividing holes formed in the pipe body, the flow dividing holes are communicated with the radiator, a supporting frame fixedly connected with the radiator is installed on the oil tank, the oil outlet pipe is fixedly connected with the supporting frame, the supporting frame comprises a fixing plate fixedly connected to the oil tank, and a transverse plate is fixedly connected to the fixing plate; the transverse plate extends to the radiator and is fixedly connected with the radiator, a plurality of inclined supports are fixedly connected to the transverse plate, the outer wall of the oil outlet pipe is fixedly connected with the supports, the overall oil flow condition in the transformer is improved, and the convection heat exchange effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of natural oil circulation transformers, in particular to the field of transformer heat dissipation, and specifically refers to a connecting pipe structure connecting a plate-type radiator and an oil tank. Background Art

[0002] During the operation of power transformers, a large amount of heat will be generated due to the power conversion and electromagnetic induction of internal windings, cores and other components. If this heat cannot be dissipated in time, the temperature of the transformer will rise, which will affect the performance and service life of its insulation materials, and may even cause thermal failures or safety accidents. Therefore, for transformers, an effective heat dissipation mechanism is one of the key factors to ensure its safe and stable operation. The natural oil circulation transformer is a transformer that uses the natural circulation of the oil inside the transformer and the cooling effect of the air to achieve the purpose of heat dissipation. When the internal windings, cores and other components of the transformer generate heat, this heat will be transferred to the transformer oil. As the oil temperature rises, the volume of the oil will expand, resulting in natural convection.

[0003] For natural oil circulation transformers, oil flow is a forced flow caused by density changes caused by temperature. In the prior art, the liquid inlet of the radiator is generally connected to the middle section of the oil tank, and the oil flow speed is low, resulting in poor heat dissipation effect. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a connecting pipe structure for connecting a plate-type radiator and an oil tank, thereby improving the overall oil flow condition inside the transformer and increasing the effect of convection heat exchange.

[0005] The utility model is realized through the following technical scheme, which provides a connecting pipe structure for connecting a plate-type radiator and an oil tank, including an oil outlet pipe connected to the top surface of the oil tank, the oil outlet pipe is connected to the liquid inlet of the radiator, the middle section of the oil tank is connected to a return pipe, the return pipe is connected to the liquid outlet of the radiator, the oil outlet pipe includes a pipe body, a main road connected to the oil tank is opened on the pipe body, the main road is connected to a plurality of diversion holes opened on the pipe body, and the diversion holes are connected to the radiator.

[0006] The utility model opens a hole at the top of the oil tank and arranges an oil outlet pipe, so that the oil at the highest temperature rise point inside the transformer can directly flow into the plate-type radiator for heat exchange, and the high-temperature oil can be discharged and cooled more quickly. The center position of the radiator heat dissipation is raised, and the gravitational potential energy of the oil in the radiator increases with the increase of the radiator height, the flow velocity of the oil flow in the vertical direction of the radiator increases, the heat exchange capacity increases, and the increase in potential energy increases the flow velocity of the oil flow at the lower end of the radiator, which promotes the increase of the oil flow velocity at the bottom of the transformer, improves the overall oil flow condition inside the transformer, and increases the effect of convective heat exchange. At the same time, the arrangement of the diversion hole further increases the flow velocity of the oil entering the radiator.

[0007] As an optimization, a support frame fixedly connected to the radiator is installed on the fuel tank, and the oil outlet pipe is fixedly connected to the support frame. With this optimization, it is fixedly connected between the fuel tank and the radiator, providing a stable support for the oil outlet pipe, preventing deformation or loosening caused by oil flow pressure or external factors, and enhancing the structural stability.

[0008] As an optimization, the support frame includes a fixing plate fixedly connected to the fuel tank. A cross plate is fixedly connected to the fixing plate. The cross plate extends to the radiator and is fixedly connected to the radiator. A number of inclined brackets are fixedly connected to the cross plate, and the outer wall of the oil outlet pipe is fixedly connected to the inclined brackets. With this optimization, the fixing plate ensures a firm connection between the support frame and the fuel tank. The cross plate not only enhances the support strength but also serves as a bridge connecting the radiator. The inclined brackets further stabilize the oil outlet pipe.

[0009] As an optimization, the pipe body includes a vertical pipe, an arc pipe, and a horizontal pipe. The vertical pipe is connected to the horizontal pipe through the arc pipe. The vertical pipe is fixedly connected to the fuel tank, and the horizontal pipe is fixedly connected to the radiator. With this optimization, it not only ensures an effective connection between the oil outlet pipe and the fuel tank and the radiator but also reduces the resistance of the oil flow at the turning point through the design of the arc pipe, improving the smoothness of the oil flow.

[0010] As an optimization, there are two inclined brackets. The two inclined brackets are respectively a front inclined bracket and a rear inclined bracket. The front inclined bracket is fixedly connected to the front end of the oil outlet pipe, and the rear inclined bracket is fixedly connected to the rear end of the oil outlet pipe. With this optimization, the oil outlet pipe is supported from the front and rear directions, further enhancing the stability of the support structure.

[0011] As an optimization, a reinforcing plate is installed on the fuel tank, and the reinforcing plate is fixedly connected to the outer wall of the return pipe. With this optimization, the strength of the return pipe and its surrounding structure is enhanced, preventing damage to the structure caused by the pressure generated by the oil fluid flow.

[0012] As an optimization, through holes are formed in the cross plate, and the inner wall of the through holes is fixedly connected to the outer wall of the support rod of the radiator. With this optimization, it facilitates the connection between the cross plate and the support rod of the radiator, enhances the connection strength between the radiator and the fuel tank, and ensures the stability of the equipment during operation.

[0013] The beneficial effects of the present utility model are as follows: Through the carefully designed oil outlet pipe and diversion holes, the high-temperature oil inside the transformer can quickly flow into the radiator for heat exchange, significantly improving the heat dissipation efficiency. At the same time, a stable support frame structure is adopted, including a combination of a fixed plate, a horizontal plate, and an inclined support, ensuring the stable connection of the oil outlet pipe with the fuel tank and the radiator, enhancing the stability and reliability of the overall structure; The height of the radiator and the height of the heat dissipation center of the present utility model are significantly increased, and the temperature difference between the inlet and outlet oil will inevitably decrease, that is, the oil flow rate will increase significantly. At the same time, the oil at the highest temperature rise at the top of the fuel tank can flow fully, and the top layer oil temperature of the final heat dissipation effect will be significantly reduced, and the average temperature rise of the internal winding will also decrease. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the present utility model;

[0015] Figure 2 It is a right view of the oil outlet pipe;

[0016] As shown in the figure:

[0017] 1. Fuel tank, 2. Support rod, 3. Return pipe, 4. Fixed plate, 5. Oil outlet pipe, 51. Pipe body, 52. Main channel, 52. Diversion hole, 6. Inclined support, 7. Horizontal plate, 8. Radiator. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] To clearly illustrate the technical features of this solution, the following is an elaboration of this solution through specific embodiments.

[0019] As Figures 1 - 2 shown, a connecting pipe structure for a finned radiator and a fuel tank of the present utility model includes an oil outlet pipe 5 connected to the top end surface of the fuel tank 1. An oil outlet hole is opened on the top of the fuel tank cover, and the oil outlet pipe is connected to the fuel tank 1 through the oil outlet hole on the fuel tank cover. The oil outlet pipe is connected to the liquid inlet of the radiator. The radiator is a prior art. The liquid inlet of the radiator is located in the upper middle section, and the liquid outlet is located in the lower middle section. An inlet pipe is installed at the liquid inlet, and an outlet pipe is installed at the liquid outlet. Both the inlet pipe and the outlet pipe extend in the left-right direction. A support rod 2 is fixedly connected between the inlet pipe and the outlet pipe. The support rod 2 extends vertically. The upper end surface of the support rod 2 is fixedly connected to the lower end of the inlet pipe, and the lower end surface of the support rod 2 is fixedly connected to the upper end of the outlet pipe. The oil outlet pipe 5 is fixedly connected to the inlet pipe of the radiator through a flange.

[0020] A return pipe 3 is connected to the middle section of the fuel tank. The return pipe extends in the left-right direction and is connected to the liquid outlet of the radiator. The return pipe 3 is fixedly connected to the outlet pipe of the radiator through a flange. A reinforcing plate is installed on the fuel tank. The reinforcing plate is triangular and is fixedly connected to the outer wall of the return pipe 3.

[0021] The oil outlet pipe includes a pipe body 51. The pipe body includes a vertical pipe, an arc pipe, and a horizontal pipe. The vertical pipe extends vertically, the horizontal pipe extends in the left-right direction. The upper end of the vertical pipe is connected to the left end of the horizontal pipe through the arc pipe. The lower end of the vertical pipe is fixedly connected to the fuel tank. The right end of the horizontal pipe is fixedly connected to the liquid inlet pipe of the radiator. A main channel 52 communicating with the fuel tank is opened on the pipe body. The main channel passes through the vertical pipe and the arc pipe from the lower end face of the vertical pipe and extends to the right end of the horizontal pipe. The main channel 52 communicates with a number of shunt holes 53 opened on the pipe body 51. The shunt holes are opened on the right end face of the horizontal pipe and extend in the left-right direction. The number of shunt holes is divided into two groups. The two groups of shunt holes are distributed radially along the horizontal pipe. The shunt holes in the same group are distributed circumferentially along the horizontal pipe. The shunt holes 53 communicate with the liquid inlet pipe of the radiator. The flowing oil in the fuel tank sequentially enters the liquid inlet pipe of the radiator through the oil outlet hole, the main channel, and the shunt holes.

[0022] A support frame fixedly connected to the radiator is installed on the fuel tank 1. The oil outlet pipe is fixedly connected to the support frame. The support frame includes a fixing plate 4 fixedly connected to the fuel tank. The fixing plate 4 extends in the up-down direction and is fixedly connected to the side end face of the fuel tank. A horizontal plate 7 is fixedly connected to the fixing plate. The horizontal plate 7 extends in the horizontal direction. The horizontal plate 7 extends to the support rod 2 of the radiator. A through hole is opened on the horizontal plate. The through hole is opened on the right side of the horizontal plate. The inner wall of the through hole is fixedly connected to the outer wall of the support rod of the radiator, so that the horizontal plate 7 is fixedly connected to the radiator.

[0023] A number of inclined brackets 6 are fixedly connected to the horizontal plate 7. The inclined supports extend obliquely upward. The outer wall of the oil outlet pipe 5 is fixedly connected to the inclined brackets 6. There are two inclined brackets. The two inclined brackets are a front inclined bracket and a rear inclined bracket respectively. The front inclined bracket is fixedly connected to the front end of the oil outlet pipe. The front inclined bracket extends obliquely forward from the horizontal plate to the front end face of the horizontal pipe of the oil outlet pipe and is fixedly connected to the horizontal pipe. The rear inclined bracket is fixedly connected to the rear end of the oil outlet pipe. The rear inclined bracket extends obliquely backward from the horizontal plate to the rear end face of the horizontal pipe of the oil outlet pipe and is fixedly connected to the horizontal pipe.

[0024] During the use of this embodiment, the high-temperature flowing oil enters the main channel of the oil outlet pipe 5 through the oil outlet hole and enters the shunt holes from the main channel. The flow rate of the flowing oil increases when it enters the shunt holes from the main channel. The flowing oil enters the liquid inlet of the radiator from the shunt holes. After being cooled by the radiator, the flowing oil flows back to the fuel tank from the liquid outlet of the radiator.

[0025] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be realized by or adopted from the prior art, and will not be elaborated here. The above embodiments and drawings are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. The present invention has been described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that any changes, modifications, additions, or substitutions made by those of ordinary skill in the art within the scope of the essence of the present invention do not depart from the purpose of the present invention and should also fall within the scope of the claims of the present invention.

Claims

1. A connecting pipe structure for connecting a finned radiator and a fuel tank, characterized in that: It includes an oil outlet pipe (5) connected to the top surface of the fuel tank. The oil outlet pipe is connected to the liquid inlet of the radiator. A return pipe (3) is connected to the middle section of the fuel tank, and the return pipe is connected to the liquid outlet of the radiator. The oil outlet pipe includes a pipe body (51). A main channel (52) communicating with the fuel tank is opened on the pipe body. The main channel (52) communicates with a number of diversion holes (53) opened on the pipe body (51), and the diversion holes (53) are connected to the radiator.

2. The connecting pipe structure for connecting a finned radiator and a fuel tank according to claim 1, characterized in that: A support frame fixedly connected to the radiator is installed on the fuel tank, and the oil outlet pipe is fixedly connected to the support frame.

3. The connecting pipe structure for connecting a finned radiator and a fuel tank according to claim 2, characterized in that: The support frame includes a fixing plate (4) fixedly connected to the fuel tank. A cross plate (7) is fixedly connected to the fixing plate. The cross plate (7) extends to the radiator and is fixedly connected to the radiator. A number of inclined brackets (6) are fixedly connected to the cross plate. The outer wall of the oil outlet pipe (5) is fixedly connected to the inclined brackets (6).

4. The connecting pipe structure for connecting a finned radiator and a fuel tank according to claim 1, wherein: The pipe body includes a vertical pipe, an arc pipe and a horizontal pipe. The vertical pipe is connected to the horizontal pipe through the arc pipe. The vertical pipe is fixedly connected to the fuel tank, and the horizontal pipe is fixedly connected to the radiator.

5. The connecting pipe structure for connecting a finned radiator and a fuel tank according to claim 3, characterized in that: There are two inclined brackets. The two inclined brackets are respectively a front inclined bracket and a rear inclined bracket. The front inclined bracket is fixedly connected to the front end of the oil outlet pipe, and the rear inclined bracket is fixedly connected to the rear end of the oil outlet pipe.

6. The connecting pipe structure for connecting a finned radiator and a fuel tank according to claim 1, characterized in that: A reinforcing plate is installed on the fuel tank, and the reinforcing plate is fixedly connected to the outer wall of the return pipe (3).

7. The connecting pipe structure for connecting a finned radiator and an oil tank according to claim 3, wherein: A through hole is opened on the cross plate, and the inner wall of the through hole is fixedly connected to the outer wall of the support rod of the radiator.

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