Combined transformer

Abstract

The combined transformer comprises a main body box and a transformer body, a ventilation opening is formed in the main body box, the ventilation opening comprises an air inlet and an air outlet, the air inlet and the air outlet are formed in the two sides of the main body box respectively, a dustproof plate is installed on the air inlet, a one-way ventilation assembly is installed at the air outlet, and the one-way ventilation assembly is arranged on the main body box. The one-way ventilation assembly comprises an air outlet pipeline, a wheel shaft is rotationally connected into the air outlet pipeline, a plurality of air baffles are installed on the wheel shaft, and the wheel shaft is connected with the air outlet pipeline through a one-way bearing to form one-way flowing of the air outlet pipeline. An upper groove and a lower groove are formed in the ventilation pipeline, the wheel shaft is installed in the upper groove, the wind shield at the bottommost part is located in the lower groove, and in the rotating process, the outermost ends of the wind shields are attached to the edges of the upper groove and the lower groove. The purpose is to avoid the dust problem caused by back blowing of dust at the air outlet.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer equipment, in particular to a combined transformer. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage, while a combination transformer is an electrical device that installs high-voltage electrical appliances such as plug-in fuses, backup fuses, oil-immersed load switches, and off-excitation voltage tap changers as components of the transformer in the transformer oil tank.

[0003] Since a variety of live equipment are installed in the transformer oil tank, the transformer oil tank has very high requirements for heat dissipation, and heat dissipation requires ventilation. Ventilation makes it easy for dust to collect inside the transformer oil tank. At present, the transformer oil tank usually installs dust panels at the vents to deal with the dust collection problem. At least one pair of vents needs to be set to form air circulation, but the dust panels cannot be absolutely dust-proof, that is, the dust panels at the air outlet will accumulate dust and need to be cleaned manually. Secondly, the air circulation direction is not fixed. The dust accumulated on the dust panels at the air outlet will be blown onto the transformer under the reverse circulation air. Utility Model Content

[0004] The utility model provides a combined transformer, the purpose of which is to avoid dust problems caused by dust backblowing at an air outlet.

[0005] The embodiments of the present invention are implemented by the following technical solutions:

[0006] A combined transformer comprises a main box and a transformer, wherein the main box is provided with a vent, the vent comprises an air inlet and an air outlet, the air inlet and the air outlet are respectively arranged on both sides of the main box, the air inlet is provided with a dustproof plate, the air outlet is provided with a one-way ventilation component, the one-way ventilation component comprises an air outlet duct, a wheel axle is rotatably connected in the air outlet duct, a plurality of wind shields are installed on the wheel axle, the wheel axle is connected to the air outlet duct via a one-way bearing, so as to form a one-way flow in the air outlet duct.

[0007] Furthermore, an upper groove and a lower groove are provided in the air outlet duct, the wheel axle is installed in the upper groove, and the bottom wind shield is located in the lower groove. During rotation, the outermost end of the wind shield fits the edges of the upper groove and the lower groove.

[0008] Furthermore, the outer end of the air outlet duct is tilted downward at a certain angle.

[0009] Furthermore, a hair dryer is installed on one inner end of the air outlet duct and is connected to the air outlet duct, and a temperature sensor is installed inside the main box.

[0010] Furthermore, a bracket is provided in the main box, the bracket is close to the transformer inside the main box, the temperature sensor is installed on the bracket, the temperature sensor circuit is connected to a controller, and the controller is connected to the hair dryer circuit.

[0011] Furthermore, the air inlet is located at the top of the side of the main box, and the air outlet is located at the bottom of the side of the main box.

[0012] Furthermore, there are two groups of air inlets and air outlets, the two groups of air inlets are arranged at the same height in the vertical direction at the top of both sides of the main box, and the two groups of air outlets are arranged at the same height in the vertical direction at the bottom of both sides of the main box.

[0013] Furthermore, the dustproof plate is installed on the inner side of the air inlet, and a frame is installed on the outer side of the dustproof plate. The frame is detachably installed on the inner wall of the main box by screws.

[0014] Furthermore, a support frame is installed at the bottom of the transformer, and the support frame is C-shaped. A plurality of heat dissipation holes are arranged on the support frame in the middle of the bottom of the support frame.

[0015] Furthermore, a rain shield is installed on the outer side of the air inlet.

[0016] Furthermore, a hanging bracket is installed on the top of the main box, and the controller is installed in the hanging bracket.

[0017] Furthermore, the hanging frame is a U-shaped structure, and the front and rear ends of the hanging frame are hollow.

[0018] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0019] The air inlet and the air outlet are set separately, and a one-way ventilation component is installed at the air outlet so that the wheel axle and the wind shield can only move in one direction. The wind at the air outlet can only flow from the inside of the main box to the outside of the main box. Partial dust removal is completed by the dustproof plate at the air inlet. The one-way ventilation component at the air outlet does not block the discharge of dust, and the internal dust is discharged together with the air flow. The setting of the one-way bearing makes the wind shield unable to reverse, and the air outlet will not circulate air from the outside to the inside of the main box, so the inflow of dust here can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0022] Figure 2 for Figure 1 A is an enlarged view of the

[0023] Icons: 1-main box, 2-air inlet, 3-air outlet, 4-transformer, 5-support frame, 6-bracket, 7-temperature sensor, 8-hanging frame, 9-controller, 10-air outlet duct, 11-upper groove, 12-lower groove, 13-axle, 14-wind shield, 15-one-way bearing, 16-blower, 17-dustproof plate, 18-rain shield. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0027] Example 1

[0028] A combined transformer includes a main body box 1, in which a transformer 4 and a load switch and other electrical equipment are installed. The transformer 4 and the load switch are both existing technologies, and the transformer 4 and the load switch that meet this scheme are used. Two groups of vents are installed on both sides of the main body box 1, and the vents include air inlets 2 and air outlets 3. The two groups of air inlets 2 are respectively arranged at the top of both sides of the main body box 1 at the same height in the vertical direction, and the two groups of air outlets 3 are arranged at the bottom of both sides of the main body box 1 at the same height in the vertical direction. A dustproof plate 17 is installed on the air inlet 2, and a one-way ventilation component is installed at the air outlet 3. The one-way ventilation component includes an air outlet duct 10, and a wheel shaft 13 is rotatably connected in the air outlet duct 10. A plurality of windshield plates 14 are installed on the wheel shaft 13. The wheel shaft 13 is connected to the air outlet duct 10 through a one-way bearing 15 to form a one-way flow of the air outlet duct 10. Conventional vents are set up to isolate dust through dustproof plates 17, but in order to ensure the efficiency of heat dissipation, the density of dustproof plates 17 cannot be too large, and there must be appropriate holes to ensure ventilation, so that dustproof plates 17 can only mainly isolate large particles and some dust, and dust will still accumulate in the main box 1. If the accumulated dust is scattered on the live equipment and is not cleaned in time, it will increase the resistance of the live equipment, causing increased power consumption and other hazards. The traditional method of setting dustproof plates 17 at both the air inlet and the air outlet 3 will accumulate dust on the dustproof plates 17 at the air outlet 3 to prevent dust from being discharged, and the reverse wind direction will cause the dust to be blown inward. The utility model sets the air inlet 2 and the air outlet 3 separately, installs a one-way ventilation assembly at the air outlet 3 so that the wheel shaft 13 and the wind shield 14 can only move in one direction, the wind at the air outlet 3 can only flow from the inside of the main box 1 to the outside of the main box 1, and the dust removal is partially completed at the air inlet through the dustproof plate 17. The one-way ventilation assembly at the air outlet 3 does not block the discharge of dust, and the internal dust is discharged together under the air flow, and the setting of the one-way bearing 15 makes the wind shield 14 unable to reverse, and the air outlet 3 will not circulate air from the outside to the inside of the main box 1, so the dust can be avoided from flowing in here. When the wind speed outside the main box 1 is low or the wind direction is facing the direction of the air inlet 2, the vent can complete the heat dissipation, and when the wind direction is opposite to the direction of the air inlet 2, the vent is difficult to ventilate and complete the heat dissipation, so two groups of air inlets 2 and air outlets 3 are set respectively on both sides of the main box 1 corresponding to the air flow in different directions. The air inlet 2 is set at the top and the air outlet 3 is set at the bottom to facilitate the discharge of dust in the air flow.

[0029] An upper groove 11 and a lower groove 12 are provided in the air outlet duct, the axle 13 is installed in the upper groove 11, and the bottom windshield 14 is located in the lower groove 12. During the rotation process, the outermost end of the windshield 14 fits the edge of the upper groove 11 and the lower groove 12. The axle 13 and part of the windshield 14 are located in the upper groove 11, and the wind force is concentrated on the lower windshield 14 to complete the rotation of the windshield 14 during the air flow. The upper groove 11 and the lower groove 12 are provided so that the ends of the windshield 14 fit together to avoid the reverse connection of the air outlet duct during the rotation process. The outer end of the air outlet duct 10 is tilted downward at a certain angle, and the tilt can prevent dust from accumulating in the lower groove 12 and not being discharged.

[0030] A hair dryer 16 is installed on the inner end of the air outlet duct 10 and communicated with the air outlet duct 10. A temperature sensor 7 is installed inside the main box 1. A bracket 6 is provided inside the main box 1. The bracket 6 is close to the transformer 4 inside the main box 1. The temperature sensor 7 is installed on the bracket 6. The temperature sensor 7 is connected to the controller 9 in circuit. The controller 9 is connected to the hair dryer 16 in circuit. A U-shaped hanging frame 8 is installed on the top of the main box 1. The front and rear ends of the hanging frame 8 are hollow. The controller 9 is installed in the hanging frame 8. When the internal heat generation is too high under the normal air circulation state, resulting in insufficient heat dissipation effect, the temperature sensor 7 is used to detect the internal temperature. When the temperature reaches a certain value and is not reduced in time, the controller 9 starts the hair dryer 16 to complete the accelerated circulation of air, increase the heat dissipation, and then reduce the internal temperature. After the temperature sensor 7 is installed on the bracket 6, it can be closer to the transformer 4, and the temperature detection is more accurate. The controller 9 is a high-precision instrument, which is installed on the top of the main box 1 away from the transformer 4 and other electrical equipment to avoid the influence of the high temperature on the controller 9 when it is not reduced in time. The U-shaped hanging frame 8 facilitates the disassembly and assembly of the controller 9.

[0031] The dustproof plate 17 is installed on the inner side of the air inlet 2, and a frame is installed on the outer side of the dustproof plate 17. The frame is detachably installed on the inner wall of the main box 1 by screws, which can facilitate the disassembly and cleaning of the frame and the dustproof plate 17. A rain shield 18 is installed on the outer side of the air inlet 2 to prevent rainwater from flowing into the air inlet 2.

[0032] A support frame 5 is installed at the bottom of the transformer 4. The support frame 5 is C-shaped. A plurality of heat dissipation holes are arranged in the middle of the bottom of the support frame 5, so that heat dissipation space can be reserved at the bottom of the transformer 4.

[0033] The above-mentioned embodiments only express the specific implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the protection scope of the present application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the technical solution concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A combined transformer, characterized in that: The invention comprises a main box (1) and a transformer (4), wherein the main box (1) is provided with a vent, wherein the vent comprises an air inlet (2) and an air outlet (3), wherein the air inlet (2) and the air outlet (3) are respectively arranged on two sides of the main box (1), wherein the air inlet (2) is provided with a dustproof plate (17), wherein the air outlet (3) is provided with a one-way ventilation component, wherein the one-way ventilation component comprises an air outlet duct (10), wherein a wheel axle (13) is rotatably connected inside the air outlet duct (10), wherein a plurality of wind shielding plates (14) are installed on the wheel axle (13), and wherein the wheel axle (13) is connected to the air outlet duct (10) via a one-way bearing (15), thereby forming a one-way flow in the air outlet duct (10).

2. A combined transformer according to claim 1, characterized in that: An upper groove (11) and a lower groove (12) are provided in the air outlet duct, the wheel shaft (13) is installed in the upper groove (11), and the bottom wind shield (14) is located in the lower groove (12). During the rotation process, the outermost end of the wind shield (14) is in contact with the edges of the upper groove (11) and the lower groove (12).

3. A combined transformer according to claim 2, characterized in that: The outer end of the air outlet duct (10) is arranged to be tilted downward at a certain angle.

4. A combined transformer according to claim 1, characterized in that: A hair dryer (16) is installed on one inner end of the air outlet duct (10) and is in communication with the air outlet duct (10), and a temperature sensor (7) is installed inside the main body box (1).

5. A combined transformer according to claim 4, characterized in that: A bracket (6) is provided in the main box (1), the bracket (6) is close to the transformer (4) inside the main box (1), the temperature sensor (7) is mounted on the bracket (6), the temperature sensor (7) is connected to a controller (9) in a circuit, and the controller (9) is connected to a hair dryer (16) in a circuit.

6. A combined transformer according to claim 1, characterized in that: The air inlet (2) is located at the top of the side of the main box (1), and the air outlet (3) is located at the bottom of the side of the main box (1).

7. A combined transformer according to claim 6, characterized in that: There are two groups of air inlets (2) and air outlets (3), the two groups of air inlets (2) are arranged at the same height on the top of both sides of the main box (1) in the vertical direction, and the two groups of air outlets (3) are arranged at the same height on the bottom of both sides of the main box (1) in the vertical direction.

8. The combined transformer according to claim 1, characterized in that: The dustproof plate (17) is installed on the inner side of the air inlet (2), and a frame is installed on the outer side of the dustproof plate (17). The frame is detachably installed on the inner wall of the main box (1) by screws.

9. The combined transformer according to claim 1, characterized in that: A support frame (5) is installed at the bottom of the transformer (4); the support frame (5) is C-shaped; a plurality of heat dissipation holes are arranged on the support frame (5) in the middle of the bottom of the support frame (5).

10. A combined transformer according to claim 8, characterized in that: A rain shield (18) is installed on the outer side of the air inlet (2).

11. The combined transformer according to claim 5, characterized in that: A hanging frame (8) is installed on the top of the main box (1), and the controller (9) is installed in the hanging frame (8).

12. A combined transformer according to claim 11, characterized in that: The hanging frame (8) is a U-shaped structure, and the front and rear ends of the hanging frame (8) are hollow.

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