Dry-type distribution transformer

Abstract

The application belongs to the technical field of distribution transformers, and discloses a dry-type distribution transformer, which comprises a supporting base, the top end of the supporting base is provided with a transformer main body, and the outer part of a radiator is fixed with a protective shell. Through the cooperation of the heat dissipation shell, the air inlet pipeline and the first heat uniforming block, the device can absorb the heat emitted by the transformer main body, take away the heat after the airflow passes between each group of the first heat uniforming block, and transport the heat to the heat dissipation area. When the heat is discharged, the heat absorbed by each group of the second heat uniforming block is taken away. The position of the second heat uniforming block is the airflow intersection of two groups. The heat is greater than that of the first heat uniforming block. By reducing the volume of the second heat uniforming block, more heat can be absorbed, and a longer heat dissipation channel can be generated, thereby improving the heat dissipation efficiency of the place, making the temperature difference between the area where the second heat uniforming block is located and the area where the first heat uniforming block is located smaller, and achieving the purpose of improving the heat dissipation efficiency of the transformer through the optimization of the air duct.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of distribution transformers, and specifically relates to a dry-type distribution transformer. BACKGROUND

[0002] As a kind of transformer, the dry-type transformer is not impregnated in the insulation oil with the core and winding, thus, compared with the wet-type transformer, it has the characteristics of fire prevention and explosion prevention, and has the advantages of strong short-circuit resistance, high operation efficiency and small size, and is widely used in the fields of lighting and mechanical processing. The dry-type transformer is divided into natural air cooling and forced air cooling, and with the increase of output power and heat, the simple air cooling measure cannot meet the heat dissipation demand, thus, the forced air cooling mode is required to effectively reduce the working temperature of the dry-type transformer.

[0003] The patent CN115346760B relates to a dry-type distribution transformer in the technical field of transformers, which comprises a transformer body, a plurality of air outlet flow channels are arranged in the air outlet, a flow control member for changing the cross-sectional size of the air outlet flow channels is arranged in the air outlet flow channels, mounting grooves and cover plates for closing the mounting grooves are arranged on the top of the two end plates, a transmission unit capable of driving the flow control member to shield the air outlet flow channels is arranged in the mounting grooves, a sliding rheostat, a press switch and a pressure sensor are also arranged in the mounting grooves, and the sliding rheostat, the press switch and the pressure sensor are in transmission connection with the transmission unit. When the transformer body is overloaded, the transmission unit drives the flow control member to shield the air outlet flow channel aperture when starting the cooling fan through the sliding rheostat, so as to increase the flow rate of the passing gas and further increase the cooling effect of the transformer body. When the temperature of the transformer body reaches the limit value during the overload operation, the transmission unit will also disconnect the transformer body through the press switch.

[0004] However, the device uses a single set of heat dissipation pipes for heat dissipation, which cannot improve the overall heat dissipation efficiency of the device, resulting in low heat dissipation efficiency and accumulation of heat. Therefore, it is necessary to optimize the air duct to improve the heat dissipation effect and utilize the air flow during exhaust to clean the air inlet simultaneously. SUMMARY

[0005] To solve the problems in the background art, the application provides a dry-type distribution transformer.

[0006] To achieve the above-mentioned purpose, the application provides the following technical scheme: a dry-type distribution transformer, comprising a supporting base, a transformer body is installed at the top end of the supporting base, a heat sink is installed in the inside of the supporting base, a heat dissipation mechanism is arranged on the outside of the transformer body, a gas collecting mechanism is installed in the inside of the heat sink, a cleaning mechanism is installed in the inside of the heat sink, and a protective shell is fixed on the outside of the heat sink.

[0007] The heat dissipation mechanism comprises a heat dissipation shell, an air inlet pipe and a first heat uniforming block, the heat dissipation shell is sleeved outside the transformer main body, one end of the heat dissipation shell is communicated with the air inlet pipe, the inside of the heat dissipation shell is fixed with the first heat uniforming block, and the top end of the heat radiator is communicated with an air outlet pipe;

[0008] The air collecting mechanism comprises a servo motor, a first cooling fan wheel and an engagement type belt, the servo motor is fixed inside the heat radiator, the rotating end of the servo motor is fixed with the first cooling fan wheel, and the outside of the first cooling fan wheel is sleeved with the engagement type belt;

[0009] The cleaning mechanism comprises a transmission shell, an air outlet and a transmission wheel, the top end of the transmission shell is communicated with the air outlet pipe, the bottom end of the transmission shell is communicated with the air outlet, and the inside of the transmission shell is rotationally connected with the transmission wheel.

[0010] Preferably, the inside of the heat dissipation shell is fixed with a guide strip, the inside of the heat dissipation shell is fixed with a second heat uniforming block, the air inlet pipe is provided with two groups, the air inlet pipe is symmetrically distributed about the central axis of the heat radiator, the first heat uniforming block is provided with a plurality of groups, and the first heat uniforming block is arrayed.

[0011] Preferably, the first heat uniforming block is in the shape of a regular hexagon, the spacing of the first heat uniforming block is equal to the thickness of the first heat uniforming block, the guide strip is provided with two groups, the guide strip is symmetrically distributed about the central axis of the heat dissipation shell, the bottom end of the guide strip is a heat uniforming area, and the top end of the guide strip is a heat dissipation area.

[0012] Preferably, the second heat uniforming block is arranged at the air outlet end of the heat dissipation shell, the second heat uniforming block is provided with a plurality of groups, the second heat uniforming block is in the shape of a regular hexagon, and the spacing of the second heat uniforming block is equal to the thickness of the second heat uniforming block.

[0013] Preferably, the inside of the heat radiator is rotationally connected with a second cooling fan wheel, the outside of the heat radiator is provided with an air inlet, the servo motor and the air inlet are provided with two groups, and the servo motor and the air inlet are symmetrically distributed about the central axis of the heat radiator.

[0014] Preferably, the outer wall of the first cooling fan wheel is provided with a plurality of groups of blades, the blades are annularly arrayed, the inside of the engagement type belt is joggle-connected with the first cooling fan wheel, the inside of the engagement type belt is joggle-connected with the second cooling fan wheel, and the first cooling fan wheel and the second cooling fan wheel are symmetrically distributed about the central axis of the engagement type belt.

[0015] Preferably, the outer part of the transmission wheel is fixed with a first gear, the outer part of the radiator is fixed with a guide rod, the inner part of the guide rod is movably connected with a cleaning rod, the inner part of the radiator is rotatably connected with a reciprocating screw rod, and the outer part of the reciprocating screw rod is fixed with a second gear.

[0016] Preferably, the outer wall of the transmission wheel is provided with a plurality of groups of transmission pieces, the transmission pieces are equidistantly distributed about the central axis of the transmission wheel, the first gear is provided with two groups, and the first gears are symmetrically distributed about the central axis of the transmission wheel.

[0017] Preferably, the guide rod is provided with two groups, the guide rods are symmetrically distributed about the central axis of the radiator, the cleaning rod is provided with two groups, the cleaning rods are symmetrically distributed about the central axis of the guide rod, and one end of the guide rod is fitted into the air inlet.

[0018] Preferably, the second gear is provided with two groups, the second gears are symmetrically distributed about the central axis of the reciprocating screw rod, the outer wall of the first gear is provided with a plurality of groups of teeth, the outer wall of the second gear is provided with a plurality of groups of teeth, and the first gear and the second gear are meshingly connected.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] The device can absorb the heat emitted by the transformer body through the first uniform heat blocks, carry away the heat after the airflow passes between each group of first uniform heat blocks, and transport the heat to the heat dissipation area, and the second uniform heat block is located at the intersection of the two groups of airflows, and the heat is greater than that at the first uniform heat block.

[0021] The device can rotate the first cooling fan wheel through the servo motor, rotate the second cooling fan wheel through the meshing belt, collect air through the air inlet when rotating, cool the airflow through itself, and then transport the cooled airflow to the inside of the heat dissipation shell through the air inlet pipe, so as to achieve the purpose of facilitating the device to cool the transformer.

[0022] The application sets the transmission shell, the air outlet and the transmission wheel structure, so that the device can be driven by the transmission wheel to rotate after the air flow passes through the transmission shell and contacts with the transmission wheel, and the transmission wheel drives the first gear to rotate, and then the second gear is driven to rotate by the rotation of the first gear, so that the two groups of cleaning rods are driven to reciprocate on the reciprocating screw after the rotation of the second gear, so that the cleaning rods contact with the air inlet to clean the air inlet, thereby achieving the purpose of cleaning the air inlet by the device to avoid blockage. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the application;

[0024] Figure 2 It is a schematic diagram of the overall rear view structure of the application;

[0025] Figure 3 It is a schematic diagram of the radiator structure of the application;

[0026] Figure 4 It is a schematic diagram of the cross-section structure of the radiator of the application;

[0027] Figure 5 It is a schematic diagram of the air collecting mechanism structure of the application;

[0028] Figure 6 It is a schematic diagram of the heat dissipation mechanism structure of the application;

[0029] Figure 7 It is a schematic diagram of the cross-section structure of the heat dissipation mechanism of the application;

[0030] Figure 8 It is a schematic diagram of the cleaning mechanism structure of the application;

[0031] Figure 9 It is a schematic diagram of the Figure 8 It is a schematic diagram of the local cross-section enlargement structure of A in the application.

[0032] In the figure: 1, support base; 2, transformer main body; 3, radiator; 4, heat dissipation mechanism; 401, heat dissipation shell; 402, air inlet pipeline; 403, first heat uniform block; 404, guide strip; 405, second heat uniform block; 406, air outlet pipeline; 5, air collecting mechanism; 501, servo motor; 502, first cooling fan wheel; 503, meshing belt; 504, second cooling fan wheel; 505, air inlet; 6, cleaning mechanism; 601, transmission shell; 602, air outlet; 603, transmission wheel; 604, first gear; 605, guide rod; 606, cleaning rod; 607, reciprocating screw; 608, second gear; 7, protective shell. DETAILED DESCRIPTION

[0033] As Figures 1 to 9As shown, the present invention provides a dry-type distribution transformer. A transformer body 2 is installed on the top of a support base 1. A radiator 3 is installed inside the support base 1. A heat dissipation mechanism 4 is provided on the outside of the transformer body 2. An air collection mechanism 5 is installed inside the radiator 3. A cleaning mechanism 6 is installed inside the radiator 3. A protective shell 7 is fixed on the outside of the radiator 3.

[0034] like Figures 1 to 7 As shown, the heat dissipation mechanism 4 includes a heat dissipation shell 401, an air inlet pipe 402, and a first heat equalization block 403. The heat dissipation shell 401 is sleeved on the outside of the transformer body 2. One end of the heat dissipation shell 401 is connected to the air inlet pipe 402. The first heat equalization block 403 is fixed inside the heat dissipation shell 401. The top of the radiator 3 is connected to an air outlet pipe 406. A guide strip 404 is fixed inside the heat dissipation shell 401. A second heat equalization block 405 is fixed inside the heat dissipation shell 401. Two sets of air inlet pipes 402 are provided, and the air inlet pipes 402 are symmetrically distributed about the central axis of the radiator 3. The first heat equalization block 403 is provided with... Several groups of first heat-uniforming blocks 403 are arranged in an array. The shape of the first heat-uniforming blocks 403 is a regular hexagon. The spacing between the first heat-uniforming blocks 403 is equal to the thickness of the first heat-uniforming blocks 403. Two groups of guide strips 404 are arranged. The guide strips 404 are symmetrically distributed about the central axis of the heat dissipation shell 401. The bottom end of the guide strips 404 is the heat-uniforming area, and the top end of the guide strips 404 is the heat dissipation area. The second heat-uniforming blocks 405 are arranged at the air outlet end of the heat dissipation shell 401. Several groups of second heat-uniforming blocks 405 are arranged. The shape of the second heat-uniforming blocks 405 is a regular hexagon. The spacing between the second heat-uniforming blocks 405 is equal to the thickness of the second heat-uniforming blocks 405.

[0035] The above scheme is adopted: After the cooling airflow enters the heat dissipation housing 401, it is located in the heat uniform zone at the bottom of the guide bar 404. The first heat uniform block 403 can absorb the heat emitted by the transformer body 2, and after the airflow passes between each group of first heat uniform blocks 403, it carries away the heat and transports it to the heat dissipation zone. When it is discharged, it carries away the heat absorbed by each group of second heat uniform blocks 405. By setting multiple groups of second heat uniform blocks 405, the space of the heat dissipation zone can be evenly distributed, so that the airflow is more uniform when discharged through the air outlet duct 406. Moreover, the position of the second heat uniform block 405 is the intersection of two groups of airflows, and the heat will be greater than the heat at the first heat uniform block 403. By reducing the volume of the second heat uniform block 405, more heat can be absorbed and a longer heat dissipation channel can be generated, improving the heat dissipation efficiency at this point, and making the temperature difference between the area where the second heat uniform block 405 is located and the area where the first heat uniform block 403 is located smaller.

[0036] like Figures 1 to 5As shown, the air collection mechanism 5 includes a servo motor 501, a first cooling fan wheel 502, and a meshing belt 503. The servo motor 501 is fixed inside the radiator 3. The rotating end of the servo motor 501 is fixed to the first cooling fan wheel 502. The meshing belt 503 is sleeved on the outside of the first cooling fan wheel 502. A second cooling fan wheel 504 is rotatably connected inside the radiator 3. The outer wall of the first cooling fan wheel 502 is provided with several sets of blades, which are distributed in a ring array. The meshing belt 503 has a first cooling fan wheel 502 internally meshed and a second cooling fan wheel 504 internally meshed. The first cooling fan wheel 502 and the second cooling fan wheel 504 are symmetrically distributed about the central axis of the meshing belt 503. The radiator 3 has an air inlet 505 on its exterior. There are two sets of servo motors 501 and air inlets 505. The servo motors 501 and air inlets 505 are symmetrically distributed about the central axis of the radiator 3.

[0037] The above scheme is adopted: by starting the servo motor 501 and the first cooling fan wheel 502 and the second cooling fan wheel 504, the servo motor 501 drives the first cooling fan wheel 502 to rotate, and drives the second cooling fan wheel 504 to rotate through the meshing belt 503. When the first cooling fan wheel 502 and the second cooling fan wheel 504 rotate, they collect air through the air inlet 505, and after cooling the airflow themselves, they are transported to the interior of the heat dissipation shell 401 through the air inlet pipe 402, and then the heat dissipation shell 401 dissipates heat on the transformer body 2.

[0038] like Figures 1 to 9 As shown, the cleaning mechanism 6 includes a transmission housing 601, an air outlet 602, and a transmission wheel 603. The top of the transmission housing 601 is connected to an air outlet 406, and the bottom of the transmission housing 601 is connected to an air outlet 602. The transmission wheel 603 is rotatably connected inside the transmission housing 601. A first gear 604 is fixed to the outside of the transmission wheel 603. Several sets of transmission plates are provided on the outer wall of the transmission wheel 603. The transmission plates are evenly distributed about the central axis of the transmission wheel 603. Two sets of first gears 604 are provided. The first gears 604 are symmetrically distributed about the central axis of the transmission wheel 603.

[0039] like Figures 1 to 9 Figures 1 to 9As shown, the outer part of the radiator 3 is fixed with guide rods 605, the inner part of the guide rods 605 is movably connected with cleaning rods 606, the guide rods 605 are provided with two groups, the guide rods 605 are symmetrically distributed about the central axis of the radiator 3, the cleaning rods 606 are provided with two groups, the cleaning rods 606 are symmetrically distributed about the central axis of the guide rods 605, one end of the guide rods 605 is fitted into the air inlet 505, the inner part of the radiator 3 is rotatably connected with a reciprocating screw 607, the outer part of the reciprocating screw 607 is fixed with second gears 608, the second gears 608 are provided with two groups, the second gears 608 are symmetrically distributed about the central axis of the reciprocating screw 607, the outer wall of the first gear 604 is provided with a plurality of groups of teeth, the outer wall of the second gear 608 is provided with a plurality of groups of teeth, the first gear 604 and the second gear 608 are meshingly connected.

[0040] By the above scheme: when the air flow is discharged, the air flow passes through the transmission shell 601, contacts the transmission wheel 603, and is discharged through the air outlet 602, driving the transmission wheel 603 to rotate, so that the transmission wheel 603 drives the first gear 604 to rotate, and then the rotation of the first gear 604 drives the second gear 608 to rotate, so that the two groups of cleaning rods 606 are driven to reciprocate on the reciprocating screw 607 after the rotation of the second gear 608, so that the cleaning rods 606 contact the air inlet 505 to clean the air inlet 505, thereby utilizing the air flow discharged by the device and simultaneously cleaning the air inlet 505 to avoid dust and impurities from blocking the air inlet 505 and affecting the air inlet of the device.

[0041] The working principle and usage process of this invention are as follows: By starting the servo motor 501 and the first cooling fan wheel 502 and the second cooling fan wheel 504, the servo motor 501 drives the first cooling fan wheel 502 to rotate, and the meshing belt 503 drives the second cooling fan wheel 504 to rotate. When the first cooling fan wheel 502 and the second cooling fan wheel 504 rotate, air is collected through the air inlet 505. After cooling the airflow, it is transported to the interior of the heat dissipation housing 401 through the air inlet pipe 402. The heat dissipation housing 401 then dissipates heat from the transformer body 2. After the cooling airflow enters the heat dissipation housing 401, it is located in the heat equalization zone at the bottom of the guide bar 404. The first heat equalization block 403 absorbs the heat emitted by the transformer body 2, and carries away the heat as the airflow passes between each set of first heat equalization blocks 403, transporting it to the heat dissipation zone. Upon discharge, the heat absorbed by each set of second heat equalization blocks 405 is carried away. By setting multiple sets of second heat equalization blocks 405, the space of the heat dissipation zone can be evenly distributed, allowing the airflow to pass through the air outlet pipe 405. The airflow is more evenly distributed during discharge, and the second heat-dissipating block 405 is located at the intersection of two sets of airflows, where the heat generated is greater than that generated by the first heat-dissipating block 403. By reducing the volume of the second heat-dissipating block 405, more heat is absorbed, and a longer heat dissipation channel is created, improving the heat dissipation efficiency at this location. This results in a smaller temperature difference between the area where the second heat-dissipating block 405 is located and the area where the first heat-dissipating block 403 is located. Furthermore, when the airflow is discharged, it passes through the transmission housing 601, contacts the transmission wheel 603, and is discharged through the air outlet 602, driving the transmission wheel... The rotation of the drive wheel 603 causes the transmission wheel 603 to drive the first gear 604 to rotate, which in turn drives the second gear 608 to rotate. The rotation of the second gear 608 drives the two sets of cleaning rods 606 to reciprocate on the reciprocating screw 607. When the cleaning rods 606 come into contact with the air inlet 505, they clean the air inlet 505, thereby utilizing the airflow discharged from the device and simultaneously cleaning the air inlet 505 to prevent dust and impurities from clogging the air inlet 505 and affecting the air intake of the device.

[0042] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. Dry distribution transformer comprising a support base (1), characterized in that: The top end of the support base (1) is provided with a transformer body (2), the inside of the support base (1) is provided with a radiator (3), the outside of the transformer body (2) is provided with a heat dissipation mechanism (4), the inside of the radiator (3) is provided with a gas collecting mechanism (5), the inside of the radiator (3) is provided with a cleaning mechanism (6), and the outside of the radiator (3) is fixedly provided with a protective shell (7). The heat dissipation mechanism (4) comprises a heat dissipation shell (401), an air inlet pipeline (402) and a first uniform heating block (403), the heat dissipation shell (401) is sleeved outside the transformer body (2), one end of the heat dissipation shell (401) is communicated with the air inlet pipeline (402), and the inside of the heat dissipation shell (401) is fixedly provided with the first uniform heating block (403); the top end of the radiator (3) is communicated with an air outlet pipeline (406). The gas collecting mechanism (5) comprises a servo motor (501), a first cooling fan wheel (502) and an engagement type belt (503), the servo motor (501) is fixed in the inside of the radiator (3), the rotating end of the servo motor (501) is fixedly provided with the first cooling fan wheel (502), and the outside of the first cooling fan wheel (502) is sleeved with the engagement type belt (503). The cleaning mechanism (6) comprises a transmission shell (601), an air outlet (602) and a transmission wheel (603), the top end of the transmission shell (601) is communicated with the air outlet pipeline (406), the bottom end of the transmission shell (601) is communicated with the air outlet (602), and the inside of the transmission shell (601) is rotatably connected with the transmission wheel (603). The inside of the heat dissipation shell (401) is fixedly provided with a guide strip (404), the inside of the heat dissipation shell (401) is fixedly provided with a second uniform heating block (405), the air inlet pipeline (402) is provided with two groups, the air inlet pipeline (402) is symmetrically distributed about the central axis of the radiator (3), and the first uniform heating block (403) is provided with a plurality of groups and is arranged in an array. The guide strip (404) is provided with two groups, the guide strip (404) is symmetrically distributed about the central axis of the heat dissipation shell (401), the bottom end of the guide strip (404) is a uniform heating area, and the top end of the guide strip (404) is a heat dissipation area. The second uniform heating block (405) is arranged at the air outlet end of the heat dissipation shell (401), and the second uniform heating block (405) is provided with a plurality of groups.

2. Dry-type distribution transformer according to claim 1, characterized in that: The first uniform heating block (403) is a regular hexagon, and the spacing of the first uniform heating block (403) is equal to the thickness of the first uniform heating block (403).

3. Dry-type distribution transformer according to claim 1, characterized in that: The second uniform heating block (405) is a regular hexagon, and the spacing of the second uniform heating block (405) is equal to the thickness of the second uniform heating block (405).

4. Dry-type distribution transformer according to claim 1, characterized in that: The inside of the heat sink (3) is rotatably connected with a second cooling fan wheel (504), the outside of the heat sink (3) is provided with an air inlet (505), the servo motor (501) and the air inlet (505) are symmetrically distributed about the central axis of the heat sink (3).

5. Dry-type distribution transformer according to claim 4, characterized in that: The outer wall of the first cooling fan wheel (502) is provided with a plurality of groups of blades, the blades are arranged in a ring array, the inside of the meshing belt (503) is rotatably connected with the first cooling fan wheel (502), the inside of the meshing belt (503) is rotatably connected with the second cooling fan wheel (504), and the first cooling fan wheel (502) and the second cooling fan wheel (504) are symmetrically distributed about the central axis of the meshing belt (503).

6. Dry-type distribution transformer according to claim 1, characterized in that: The outside of the transmission wheel (603) is fixedly connected with a first gear (604), the outside of the heat sink (3) is fixedly connected with a guide rod (605), the inside of the guide rod (605) is movably connected with a cleaning rod (606), the inside of the heat sink (3) is rotatably connected with a reciprocating screw (607), and the outside of the reciprocating screw (607) is fixedly connected with a second gear (608).

7. Dry-type distribution transformer according to claim 6, characterized in that: The outer wall of the transmission wheel (603) is provided with a plurality of groups of transmission pieces, the transmission pieces are equidistantly distributed about the central axis of the transmission wheel (603), the first gear (604) is provided with two groups, and the first gears (604) are symmetrically distributed about the central axis of the transmission wheel (603).

8. Dry-type distribution transformer according to claim 6, characterized in that: The guide rod (605) is provided with two groups, the guide rods (605) are symmetrically distributed about the central axis of the heat sink (3), the cleaning rod (606) is provided with two groups, the cleaning rods (606) are symmetrically distributed about the central axis of the guide rod (605), and one end of the guide rod (605) is attached to the air inlet (505).

9. Dry-type distribution transformer according to claim 6, characterized in that: The second gear (608) is provided with two groups, the second gears (608) are symmetrically distributed about the central axis of the reciprocating screw (607), the outer wall of the first gear (604) is provided with a plurality of groups of teeth, the outer wall of the second gear (608) is provided with a plurality of groups of teeth, and the first gear (604) and the second gear (608) are rotatably connected.

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