Efficient heat dissipation device for dry-type power transformer

Abstract

The utility model relates to the technical field of dry-type power transformers, in particular to an efficient heat dissipation device for a dry-type power transformer, which comprises a transformer, a mounting frame is arranged outside the transformer, and a heat dissipation assembly for dissipating heat of the transformer is arranged in the mounting frame. The heat dissipation assembly comprises fan blades and a rotating disc which are arranged in the mounting frame, a through groove is formed in the rotating disc, two connecting holes are formed in the inner wall of the mounting frame, a fixing pipe is arranged at the end, away from the mounting frame, of one connecting hole, a cavity is formed in the fixing pipe, a vortex pipe is arranged on the inner wall of the cavity, and a cooling fan is arranged in the vortex pipe. One end of the fixing pipe is provided with a heat discharge pipe, the other end of the fixing pipe is provided with a conveying pipe, and a plurality of hole grooves are formed in the outer portion of the conveying pipe. When the external temperature is high, air is cooled in a vortex tube refrigeration mode and then sent into the transformer for heat dissipation and cooling, the effect of air cooling and heat dissipation is guaranteed, and vortex tube refrigeration does not need to consume energy and is efficient and energy-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of dry-type power transformers, in particular to a high-efficiency heat dissipation device for dry-type power transformers. Background Art

[0002] Dry-type power transformer is a new type of power equipment, which uses dry medium (such as gas or liquid) to isolate and transmit electric energy. The function of dry-type power transformer is to convert electric energy of one voltage level into electric energy of another voltage level, and transmit the electric energy from the transmission line or other power system to the user's electrical equipment. During the operation of dry-type power transformer, the power is large and high heat is generated. Therefore, when in use, it is necessary to dissipate heat inside the transformer to ensure the temperature of the internal space and reduce the impact of high temperature on electronic components.

[0003] However, in the current prior art, water cooling or air cooling is generally used to dissipate heat when the transformer is in use. Air cooling is to transport external cold air to the transformer for ventilation and air exchange through fan blades to achieve cooling. However, in summer or in areas with high ambient temperature, the air temperature outside the transformer is high, so the effect of air cooling will be greatly reduced, resulting in poor heat dissipation effect. Utility Model Content

[0004] The purpose of the utility model is to provide a high-efficiency heat dissipation device for a dry-type power transformer to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A high-efficiency heat dissipation device for a dry-type power transformer comprises a transformer, a mounting frame is arranged outside the transformer, a heat dissipation component for dissipating heat for the transformer is arranged inside the mounting frame, the heat dissipation component comprises a fan blade and a turntable arranged inside the mounting frame, a through groove is arranged inside the turntable, two connection holes are arranged on the inner wall of the mounting frame, one of the connection holes is arranged with a fixed pipe at one end away from the mounting frame, a cavity is arranged inside the fixed pipe, an eddy current tube is arranged on the inner wall of the cavity, a heat exhaust pipe is arranged at one end of the fixed pipe, and a delivery pipe is arranged at the other end, and a plurality of holes and grooves are arranged on the outside of the delivery pipe.

[0007] As a preferred solution of the utility model, the installation frame is connected to the outer wall of the transformer by bolts, the fan blade outer frame is connected to the inner wall of the installation frame by bolts, and the fan blades can rotate to introduce external air into the transformer for air supply and heat dissipation.

[0008] As a preferred solution of the utility model, the turntable is located in the installation frame and is rotatably connected to the inner wall of the installation frame through a connecting shaft. The size of the through groove on the outer wall of the turntable matches the connecting hole, and the through groove is switched between the two connecting holes by rotating the turntable.

[0009] As a preferred solution of the utility model, one of the connection holes is directly connected to the heat dissipation fins inside the transformer, and the other connection hole is connected to the fixing tube through a sleeve.

[0010] As a preferred solution of the utility model, the fixed tube is located in the transformer housing and is connected to the inside of the transformer by bolts. The vortex tube is connected to the inner wall of the cavity by bolts. The surface of the vortex tube has threaded patterns, which makes the airflow flow in a vortex shape after the airflow passes through.

[0011] As a preferred solution of the utility model, the heat exhaust pipe and the delivery pipe are respectively connected to the two ends of the fixed pipe through sleeves, the heat exhaust pipe extends to the outside of the transformer, the delivery pipe is located inside the transformer and evenly distributed around the electronic components of the transformer, and a plurality of holes and grooves are arranged and distributed outside the delivery pipe.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: in response to the problems raised in the background technology, the present application adopts a heat dissipation component, detects the ambient temperature inside the transformer through the temperature sensor in the transformer, and controls the fan blades to rotate to supply air to achieve heat dissipation of the transformer;

[0013] When the outside air temperature rises and the sensor detects that the heat dissipation effect of the air supply is low for a long time, the wind flow generated by the fan blades can be controlled to be guided to another connecting hole, so that the airflow passes through the fixed tube. When the airflow enters the fixed tube, it is spirally transported through the vortex tube, and low-temperature gas is generated by vortex tube refrigeration. The generated cold air is transported to the electronic components of the transformer through the delivery pipe to cool them, thereby achieving the effect of air-cooled heat dissipation when the outside air temperature is high.

[0014] The utility model realizes that when the external temperature is high, the air is cooled by vortex tube refrigeration and then sent into the transformer for heat dissipation and temperature reduction, thereby ensuring the effect of air cooling and heat dissipation, and the vortex tube refrigeration does not consume energy and is highly efficient and energy-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the appearance structure diagram of the transformer of the utility model;

[0016] Figure 2 This is an exploded view of the internal structure of the installation frame of the utility model;

[0017] Figure 3 This is a top sectional view of the fixed pipe of the utility model;

[0018] Figure 4 This is the internal structure diagram of the fixed pipe of the utility model.

[0019] In the figure: 1, transformer; 2, mounting frame; 201, fan blade; 3, connecting hole; 4, turntable; 401, through slot; 5, fixing pipe; 501, cavity; 502, eddy current tube; 6, heat exhaust pipe; 7, delivery pipe; 701, hole slot. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the embodiments of the present invention.

[0021] Example

[0022] See also Figure 1-4The utility model provides a technical solution: an efficient heat dissipation device for a dry-type power transformer, comprising a transformer 1, a mounting frame 2 is arranged outside the transformer 1, a heat dissipation component for dissipating heat for the transformer 1 is arranged inside the mounting frame 2, the heat dissipation component comprises a fan blade 201 and a turntable 4 arranged inside the mounting frame 2, the fan blade 201 can guide the air outside the transformer 1 to be injected into the transformer 1 for air supply to dissipate heat and cool the transformer 1 by rotation, the turntable 4 can rotate to switch the through slot 401 between two connecting holes 3, thereby changing the position where the airflow enters the transformer 1, the turntable 4 is provided with a through slot 401 inside, the inner wall of the mounting frame 2 is provided with two connecting holes 3, one of the connecting holes 3 is connected to the heat dissipation fins in the transformer 1, so that the airflow can be directly sent into the transformer 1 to dissipate heat for electronic components, the other connecting hole 3 is connected to the fixing pipe 5, and one of the connecting holes 3 is away from the mounting frame A fixed pipe 5 is arranged at one end of the fixed pipe 5, a cavity 501 is arranged inside the fixed pipe 5, and a vortex tube 502 is arranged on the inner wall of the cavity 501, (the airflow is transported in a spiral shape through the vortex tube 502, and the free vortex rotates in the pipe. The rotation speeds at different angles are different, and the vortex layer will generate friction. The heat generated forms a hot air flow and flows out through the separation plate in the pipe, and the vortex in the central layer loses energy due to friction and the temperature will be reduced. It is led out from the other end through the separation plate in the pipe to achieve the cooling effect), so that the air is cooled by the principle of vortex refrigeration. A heat exhaust pipe 6 is arranged at one end of the fixed pipe 5, and the heat exhaust pipe 6 guides and discharges the hot air separated by the vortex, and can also collect and utilize the hot air by installing a pipe. A delivery pipe 7 is arranged at the other end, and the delivery pipe 7 is used to guide and transport the cold air separated by the vortex, and discharge it into the transformer 1 through the hole slot 701. A plurality of hole slots 701 are arranged on the outside of the delivery pipe 7. A temperature sensor is installed inside the transformer 1. When the temperature is high, the fan blades 201 are controlled to supply air to dissipate heat for the transformer 1. When the external air temperature rises, the sensor detects that the heat dissipation effect of the air supply is low for a long time. The turntable 4 is controlled by the PLC controller to rotate in the installation frame 2 so that the through slot 401 in the turntable 4 rotates to match the other connecting hole 3, and the wind flow generated by the fan blades 201 is guided to the other connecting hole 3 for transportation.

[0023] In this embodiment, all electrical components are controlled by conventional controllers.

[0024] For example, please refer to Figure 1-4The mounting frame 2 is connected to the outer wall of the transformer 1 by bolts, the outer frame of the fan blade 201 is connected to the inner wall of the mounting frame 2 by bolts, and the fan blade 201 can be rotated to introduce external air into the transformer 1 for air supply and heat dissipation, the turntable 4 is located in the mounting frame 2, and is rotatably connected to the inner wall of the mounting frame 2 by a connecting shaft, the through slot 401 on the outer wall of the turntable 4 matches the connecting hole 3 in size, and the through slot 401 is switched between the two connecting holes 3 by rotating the turntable 4, one of the connecting holes 3 is directly connected to the heat dissipation fins inside the transformer 1, and the other connecting hole 3 is connected to the heat dissipation fins inside the transformer 1 by a connecting shaft. The sleeve is communicated with the fixed tube 5, the fixed tube 5 is located in the transformer 1 shell and is connected to the inside of the transformer 1 by bolts, the vortex tube 502 is connected to the inner wall of the cavity 501 by bolts, the surface of the vortex tube 502 has threaded patterns, and the airflow is caused to flow in a vortex shape after the airflow passes through, the heat exhaust pipe 6 and the delivery pipe 7 are respectively connected to both ends of the fixed tube 5 through the sleeve, the heat exhaust pipe 6 extends to the outside of the transformer 1, the delivery pipe 7 is located in the transformer 1 and is evenly distributed around the electronic components of the transformer 1, and a plurality of the hole grooves 701 are arranged and distributed outside the delivery pipe 7. When in use, the fan blades 201 are first rotated to inject external air into the transformer 1 through the connecting hole 3 to dissipate heat inside the transformer 1. When the heat dissipation effect of the air supply is reduced due to the increase in the external air temperature, the turntable 4 is controlled by the PLC controller to rotate in the installation frame 2 so that the through slot 401 in the turntable 4 rotates to match the other connecting hole 3, and the wind flow generated by the fan blades 201 is guided to the other connecting hole 3 and transported to the fixed tube 5. After entering the fixed tube 5, the airflow is transported in a spiral shape through the vortex tube 502, and the gas is separated and cooled by the principle of vortex refrigeration. Then the heat exhaust pipe 6 guides and discharges the hot air separated by the vortex, and the cold air is transported to the transformer 1 through the delivery pipe 7 at the other end, and is injected into the transformer 1 through the hole slot 701 to dissipate heat from the electronic components.

[0025] The working process of the utility model: when in use, firstly, the fan blade 201 rotates to inject the external air into the transformer 1 through the connection hole 3 to dissipate the heat inside the transformer 1. When the heat dissipation effect of the air supply is reduced due to the increase of the external air temperature, the PLC controller controls the turntable 4 to rotate in the installation frame 2 so that the through slot 401 in the turntable 4 rotates to match another connection hole 3, and the wind flow generated by the fan blade 201 is guided to another connection hole 3 and transported to the fixed tube 5. After entering the fixed tube 5, the air flow is transported in a spiral shape through the vortex tube 502, and the gas is separated and cooled by the principle of vortex refrigeration. Then, the heat exhaust pipe 6 guides the hot air separated by the vortex to be discharged, and the cold air is transported to the transformer 1 through the conveying pipe 7 at the other end, and is injected into the transformer 1 through the hole slot 701 to dissipate the heat of the electronic components. The utility model realizes that when the external temperature is high, the air is cooled by the vortex tube refrigeration method and then sent to the transformer for heat dissipation and cooling, so as to ensure the effect of air cooling, and the vortex tube refrigeration does not need to consume energy and is highly efficient and energy-saving.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An efficient heat dissipation device for a dry-type power transformer, comprising a transformer (1), a mounting frame (2) being arranged outside the transformer (1), a heat dissipation component for dissipating heat from the transformer (1) being arranged inside the mounting frame (2), characterized in that: The heat dissipation component comprises a fan blade (201) and a rotating disk (4) arranged inside a mounting frame (2); a through groove (401) is arranged inside the rotating disk (4); two connecting holes (3) are arranged on the inner wall of the mounting frame (2); a fixed tube (5) is arranged at one end of one of the connecting holes (3) away from the mounting frame (2); a cavity (501) is arranged inside the fixed tube (5); a vortex tube (502) is arranged on the inner wall of the cavity (501); a heat exhaust pipe (6) is arranged at one end of the fixed tube (5); and a delivery pipe (7) is arranged at the other end; and a plurality of holes (701) are arranged on the outside of the delivery pipe (7).

2. The high-efficiency heat dissipation device for a dry-type power transformer according to claim 1, characterized in that: The installation frame (2) is connected to the outer wall of the transformer (1) by bolts, the outer frame of the fan blades (201) is connected to the inner wall of the installation frame (2) by bolts, and the fan blades (201) can rotate to introduce external air into the transformer (1) for air supply and heat dissipation.

3. The high-efficiency heat dissipation device for a dry-type power transformer according to claim 1, characterized in that: The turntable (4) is located in the installation frame (2) and is rotatably connected to the inner wall of the installation frame (2) via a connecting shaft; the size of the through slot (401) on the outer wall of the turntable (4) matches the connecting hole (3); the through slot (401) is switched between the two connecting holes (3) by rotating the turntable (4).

4. The high-efficiency heat dissipation device for a dry-type power transformer according to claim 1, characterized in that: One of the connection holes (3) is directly connected to the heat dissipation fins inside the transformer (1), and the other connection hole (3) is connected to the fixing tube (5) via a sleeve.

5. The high-efficiency heat dissipation device for a dry-type power transformer according to claim 1, characterized in that: The fixed tube (5) is located inside the transformer (1) housing and is connected to the inside of the transformer (1) via bolts; the vortex tube (502) is connected to the inner wall of the cavity (501) via bolts; the surface of the vortex tube (502) has thread patterns, which cause the airflow to flow in a vortex shape after the airflow passes through.

6. The high-efficiency heat dissipation device for a dry-type power transformer according to claim 1, characterized in that: The heat exhaust pipe (6) and the delivery pipe (7) are respectively connected to two ends of the fixed pipe (5) through sleeves; the heat exhaust pipe (6) extends to the outside of the transformer (1); the delivery pipe (7) is located inside the transformer (1) and is evenly distributed around the electronic components of the transformer (1); and a plurality of the hole grooves (701) are arranged and distributed outside the delivery pipe (7).

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