CN209980920U

CN209980920U - Heat dissipation device for power electronic transformer

Info

Publication number: CN209980920U
Application number: CN201920371386.5U
Authority: CN
Inventors: 徐啸涛; 封燕芳; 代红艳
Original assignee: Zhejiang Institute of Mechanical and Electrical Engineering Co Ltd
Current assignee: Guangdong Runyuan Energy Technology Co ltd
Priority date: 2019-03-22
Filing date: 2019-03-22
Publication date: 2020-01-21
Anticipated expiration: 2029-03-22

Abstract

The utility model discloses a heat abstractor for power electronic transformer, including placing the case, place the baffle of the vertical setting of incasement fixedly connected with, the baffle will be placed the case and separate for equipment chamber and working chamber, power electronic transformer is installed to the equipment intracavity, the baffle is improved level and is run through and be equipped with first pivot, first pivot and baffle sliding connection, first pivot is located the one end fixedly connected with fixed block in equipment chamber, install a plurality of blades that are used for blowing on the fixed block, the one end that first pivot is located the working chamber has fixed first cone pulley and fixed plate of having cup jointed in proper order. The utility model discloses utilize plastic blade to dispel the heat to power electronic transformer, avoid adopting metal blade to lead to the fact the influence to the voltage difference of transformer, the blade heat dissipation position is portable simultaneously, carries out even heat dissipation to power electronic transformer, prevents that the uneven mechanical fault that causes of being heated of part position from damaging.

Description

Heat dissipation device for power electronic transformer

Technical Field

The utility model relates to a transformer heat dissipation technical field especially relates to a heat abstractor for power electronic transformer.

Background

In recent years, with the rapid development of a direct current power grid technology, power electronic transformers are increasingly emphasized, because the power electronic transformers have large capacity, high voltage and high insulation requirement, the temperature of the transformers can be higher and higher during operation, and if the transformers are not cooled, the normal operation of the transformers can be seriously affected, so that the cooling problem of the transformers is increasingly emphasized.

At present, a heat dissipation hole is generally formed in a cabinet body of a transformer cabinet, so that heat dissipation is achieved through natural wind, heat dissipation efficiency is low, the transformer cabinet can be seriously interfered by external environment in hot summer or severe cold winter, a part of power electronic transformers adopt a fan to dissipate heat, fan blades are fixed in position, one side of the transformer cabinet is cooled for a long time, internal heat dissipation is uneven, mechanical failure can occur, and damage is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art, and providing a heat dissipation device for a power electronic transformer.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a heat abstractor for power electronic transformer, is including placing the case, place the baffle of the vertical setting of incasement fixedly connected with, the baffle will be placed the case and separate for equipment chamber and working chamber, power electronic transformer is installed to the equipment intracavity, the baffle is improved level and is run through and be equipped with first pivot, first pivot and baffle sliding connection, the one end fixedly connected with fixed block that first pivot is located the equipment chamber, install a plurality of blades that are used for blowing on the fixed block, the one end that first pivot is located the working chamber is fixed the cup joint in proper order has first cone pulley and fixed plate, the lateral wall fixedly connected with motor of fixed plate, motor output shaft's end and first pivot fixed connection, be equipped with in the working chamber with first cone pulley complex drive mechanism.

Preferably, drive mechanism includes sliding connection at the baffle lateral wall and places the horizontal pole on the incasement lateral wall, the lower terminal surface and the fixed plate fixed connection of horizontal pole, the up end fixedly connected with montant of horizontal pole, be equipped with guide structure on the montant, the vertical second pivot that runs through on the horizontal pole, the upper and lower both ends of second pivot are all fixed to have cup jointed the second cone pulley, the second pivot is passed through the bearing and is connected with the horizontal pole rotation, the second cone pulley and the first cone pulley mesh of second pivot lower extreme, the second cone pulley of second pivot upper end is connected with guide structure.

Preferably, guide structure runs through the third pivot of setting on the montant including the level, the third pivot passes through the bearing and is connected with the montant rotation, the one end sliding connection of third pivot is on the lateral wall of baffle, and the fixed cover of the other end has connect the gear, the inside wall of placing the case is equipped with the recess, be equipped with in the recess with gear engaged with rack.

Preferably, the side wall of the placing box and the partition plate are both provided with ventilation openings.

Preferably, the motor is a four-wire five-phase motor capable of controlling the steering and the rotating speed.

Preferably, the blades are made of plastic, and the number of the blades is 3.

The utility model has the advantages that:

through setting up drive mechanism and guiding mechanism, when needing to dispel the heat to power electronic transformer, the corotation of starter motor drives first pivot corotation for the rotatory air-out of blade dispels the heat to power electronic transformer, and in first pivot pivoted, drive first cone pulley and rotate, make the second pivot rotate, and then make the third pivot rotate, because set up the wheel and rack toothing in the third pivot, the third pivot is in the pivoted, and the sideslip drives montant and horizontal pole and carries out the sideslip around taking place, and then makes the fixed plate sideslip, realizes first pivot sideslip, makes the blade carry out even heat dissipation to power electronic transformer, prevents that temperature dispersion is inhomogeneous on the power electronic transformer, causes mechanical failure and harm.

Through the blade that sets up 3 plastics materials, avoided using metal blade to cause the influence poor to the inside voltage of power electronic transformer, use quantity simultaneously and be 3 blades, the air-out is more stable, and triangular structure makes blade save electric power and energy when rotatory.

Drawings

Fig. 1 is a schematic structural diagram of a heat dissipation device for a power electronic transformer according to the present invention;

fig. 2 is a schematic view of a gear and rack connection structure of a heat dissipation device for a power electronic transformer according to the present invention.

In the figure: the device comprises a placement box 1, a partition plate 2, an equipment cavity 3, a working cavity 4, a power electronic transformer 5, a first rotating shaft 6, a fixed block 7, a blade 8, a first cone pulley 9, a fixed plate 10, a motor 11, a cross rod 12, a groove 13, a rack 14, a gear 15, a second rotating shaft 16, a vertical rod 17, a second cone pulley 18, a third cone pulley 19 and a third rotating shaft 20.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-2, a heat dissipation device for a power electronic transformer comprises a placing box 1, a vertically arranged partition plate 2 is fixedly connected in the placing box 1, the partition plate 2 divides the placing box 1 into an equipment cavity 3 and a working cavity 4, a power electronic transformer 5 is installed in the equipment cavity 3, a first rotating shaft 6 horizontally penetrates through the partition plate 2, the first rotating shaft 6 is in sliding connection with the partition plate 2, one end of the first rotating shaft 6, which is positioned in the equipment cavity 3, is fixedly connected with a fixing block 7, a plurality of blades 8 for blowing are installed on the fixing block 7, the number of the blades 8 is 3, the air outlet is more stable, and the power and the energy are saved from the mechanical point of view, one end of the first rotating shaft 6, which is positioned in the working cavity 4, is fixedly sleeved with a first cone pulley 9 and a fixing plate 10 in sequence, a motor 11 is fixedly connected to the side wall of the fixing plate 10, and the tail end of, motor 11 is steerable four-wire five-phase motor that turns to and rotational speed for sideslip around can taking place when blade 8 is just reversing carries out even heat dissipation to power electronic transformer, be equipped with in the working chamber 4 with first cone pulley 9 complex drive mechanism, all seted up the vent on placing the lateral wall of case 1 and baffle 2, guarantee that the holistic air of device flows.

In the utility model, the transmission mechanism comprises a cross rod 12 which is connected on the side wall of the clapboard 2 and on the inner side wall of the placing box 1 in a sliding way, the lower end surface of the cross rod 12 is fixedly connected with a fixed plate 10, the upper end surface of the cross rod 12 is fixedly connected with a vertical rod 17, a guide structure is arranged on the vertical rod 17, a second rotating shaft 16 is vertically arranged on the cross rod 12 in a penetrating way, the upper end and the lower end of the second rotating shaft 16 are fixedly sleeved with a second cone 18, the second rotating shaft 16 is rotatably connected with the cross rod 12 through a bearing, the second cone 18 at the lower end of the second rotating shaft 16 is meshed with a first cone 9, the second cone 18 at the upper end of the second rotating shaft 16 is connected with the guide structure, the guide structure comprises a third rotating shaft 20 which is horizontally arranged on the vertical rod 17 in a penetrating way, the third rotating shaft 20, the inner side wall of the placing box 1 is provided with a groove 13, and a rack 14 meshed with a gear 15 is arranged in the groove 13.

When the utility model is used, when heat dissipation needs to be carried out on the power electronic transformer 5, the motor 11 is started to rotate positively to drive the first rotating shaft 6 to rotate, so that the blades 8 rotate to discharge air, the power electronic transformer 5 is cooled, the first rotating shaft 6 rotates to drive the first cone pulley 9 to rotate, the second rotating shaft 16 rotates, and further the third rotating shaft 20 rotates, because the gear 15 arranged on the third rotating shaft 20 is meshed with the rack 14, the third rotating shaft 20 rotates and transversely moves forwards and backwards to drive the vertical rod 17 and the transverse rod 12 to transversely move, so that the fixing plate 10 transversely moves, the first rotating shaft 6 transversely moves, the blades 8 uniformly dissipate heat to the power electronic transformer 5, the uneven temperature dispersion on the power electronic transformer 5 is prevented, mechanical faults and damages are caused, before the gear 15 reaches the tail end of the rack 14, the steering of the motor 11 is changed by utilizing an inherent steering program, so that the power electronic transformer can be reversely rotated to continuously and uniformly radiate the heat of the power electronic transformer.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A heat dissipation device for a power electronic transformer comprises a placing box (1) and is characterized in that a vertically arranged partition plate (2) is fixedly connected in the placing box (1), the partition plate (2) divides the placing box (1) into an equipment cavity (3) and a working cavity (4), a power electronic transformer (5) is installed in the equipment cavity (3), a first rotating shaft (6) horizontally penetrates through the partition plate (2), the first rotating shaft (6) is in sliding connection with the partition plate (2), one end, located in the equipment cavity (3), of the first rotating shaft (6) is fixedly connected with a fixing block (7), a plurality of blades (8) used for blowing are installed on the fixing block (7), one end, located in the working cavity (4), of the first rotating shaft (6) is sequentially and fixedly sleeved with a first cone pulley (9) and a fixing plate (10), and the side wall of the fixing plate (10) is fixedly connected with a motor (11), the tail end of an output shaft of the motor (11) is fixedly connected with the first rotating shaft (6), and a transmission mechanism matched with the first cone pulley (9) is arranged in the working cavity (4).

2. A heat sink for a power electronic transformer according to claim 1, the transmission mechanism comprises a cross bar (12) which is connected with the side wall of the clapboard (2) in a sliding way and the inner side wall of the placing box (1), the lower end surface of the cross rod (12) is fixedly connected with the fixed plate (10), the upper end surface of the cross rod (12) is fixedly connected with a vertical rod (17), the vertical rod (17) is provided with a guide structure, the transverse rod (12) is vertically provided with a second rotating shaft (16) in a penetrating way, the upper end and the lower end of the second rotating shaft (16) are fixedly sleeved with a second cone pulley (18), the second rotating shaft (16) is rotationally connected with the cross rod (12) through a bearing, a second cone pulley (18) at the lower end of the second rotating shaft (16) is meshed with the first cone pulley (9), and a second cone pulley (18) at the upper end of the second rotating shaft (16) is connected with the guide structure.

3. The heat dissipation device for the power electronic transformer as recited in claim 2, wherein the guiding structure comprises a third rotating shaft (20) horizontally penetrating the vertical rod (17), the third rotating shaft (20) is rotatably connected with the vertical rod (17) through a bearing, one end of the third rotating shaft (20) is slidably connected to the side wall of the partition plate (2), the other end of the third rotating shaft is fixedly sleeved with a gear (15), the inner side wall of the placing box (1) is provided with a groove (13), and a rack (14) engaged with the gear (15) is arranged in the groove (13).

4. The heat dissipation device for the power electronic transformer as claimed in claim 1, wherein the side wall of the placing box (1) and the partition plate (2) are both provided with ventilation openings.

5. A heat sink for a power electronic transformer according to claim 1, characterized in that the motor (11) is a four-wire five-phase motor with controllable direction of rotation and speed of rotation.

6. A heat sink for a power electronic transformer according to claim 1, characterized in that said fins (8) are made of plastic and are 3 in number.