CN209804412U - Dry-type rectifier transformer with air guide plates for variable frequency speed regulation - Google Patents
Dry-type rectifier transformer with air guide plates for variable frequency speed regulation Download PDFInfo
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- CN209804412U CN209804412U CN201821632841.4U CN201821632841U CN209804412U CN 209804412 U CN209804412 U CN 209804412U CN 201821632841 U CN201821632841 U CN 201821632841U CN 209804412 U CN209804412 U CN 209804412U
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Abstract
The utility model provides a dry-type rectifier transformer for Variable Frequency Speed Governing (VFSG) with aviation baffle, this transformer include at least one transformer main part, include in the transformer main part: the high-voltage coil is positioned in the center of the coil, the low-voltage coil is positioned on the radial outer side of the high-voltage coil, and the auxiliary coil is positioned at the axial lower end of the low-voltage coil; the high-voltage coil is of a cylindrical structure, the low-voltage coil and the auxiliary coil are of continuous structures, and the low-voltage coil comprises a phase-shifting coil and a main coil; the three-phase coils LA, LB and LC are arranged in an equilateral triangle, and all the head terminals are arranged on the side of the triangle ABC; an air passage is formed between the upper winding and the lower winding of the low-voltage coil; and the left side and/or the right side of the outer layer of the low-voltage coil are/is provided with an air deflector, the air deflector is in a bent shape which is the same as that of the low-voltage coil, and the air deflector is used for improving the air inlet and outlet speed of the air passage and improving the air cooling efficiency.
Description
Technical Field
The utility model relates to a transformer especially relates to a dry-type rectifier transformer for variable frequency speed governing with aviation baffle.
Background
The transformer is a device for changing alternating voltage by using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil and an iron core. The main functions are as follows: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization, and the like. Wherein, when the transformer for variable frequency speed governing compares in fields such as colliery, cement plant, iron and steel factory, needs a large amount of heat dissipations, and heat abstractor generally needs the bottom to set up 6 fans, leads to transformer cost to rise greatly.
In the dry-type rectifier transformer, a high-voltage coil and a low-voltage coil are coaxially arranged, the windings of the coils are overlapped up and down, and when 6 fans are adopted at the bottom for ventilation and heat dissipation up and down, the entering air cannot be in full contact with each layer of windings, so that the problems of high up-down heat dissipation and slow central heat dissipation are caused. At present, a heat dissipation system of the dry rectifier transformer also adopts a front-back ventilation heat dissipation mode, and in the front-back ventilation heat dissipation mode, outside wind is blown horizontally through an air passage between windings through a fan. Compared with the upper and lower heat dissipation, the front and back ventilation heat dissipation can more effectively take away the heat of each winding. However, the heat dissipation method of front and back ventilation is also insufficient, for example, the wind speed when air enters the winding is too low during front and back ventilation, and the heat dissipation power is reduced due to the local heat dissipation failure of the coil. Thus, a solution is continuing that can enhance the wind speed through the coils within the transformer enclosure.
SUMMERY OF THE UTILITY MODEL
For overcoming the problem among the prior art, the utility model provides a dry-type rectifier transformer for variable frequency speed governing with aviation baffle, including at least one transformer main part, include in the transformer main part: the high-voltage coil is positioned in the center of the coil, the low-voltage coil is positioned on the radial outer side of the high-voltage coil, and the auxiliary coil is positioned at the axial lower end of the low-voltage coil; the high-voltage coil is of a cylindrical structure, the low-voltage coil and the auxiliary coil are of continuous structures, and the low-voltage coil comprises a phase-shifting coil and a main coil; the three-phase coils LA, LB and LC are arranged in an equilateral triangle, and all the head terminals are arranged on the side of the triangle ABC; an air passage is formed between the upper winding and the lower winding of the low-voltage coil; and the left side and/or the right side of the outer layer of the low-voltage coil are/is provided with an air deflector, the air deflector is in a bent shape which is the same as that of the low-voltage coil, and the air deflector is used for improving the air inlet and outlet speed of the air passage and improving the air cooling efficiency.
The utility model provides an among the dry-type rectifier transformer for variable frequency speed governing with aviation baffle, the aviation baffle with interval between the low-voltage coil is 3 ~ 5 centimetres.
The utility model provides an among the dry-type rectifier transformer for variable frequency speed governing with aviation baffle, the aviation baffle with low tension coil becomes coaxial setting.
The utility model provides an among the dry-type rectifier transformer for variable frequency speed governing with aviation baffle, the line length of aviation baffle accounts for 1/6 ~ 1/4 of low-voltage coil outer fringe.
The utility model provides an among the dry-type rectifier transformer for variable frequency speed governing with aviation baffle, the outside surface of aviation baffle is connected with the fixed bolster of an at least perpendicular setting, the upper and lower both ends of fixed bolster with transformer main part reciprocal anchorage, the fixed bolster will from the outside the aviation baffle cramps low tension coil's periphery.
The utility model provides an among the dry-type rectifier transformer for variable frequency speed governing with aviation baffle, the aviation baffle adopts insulating material to make.
The utility model provides an among the dry-type rectifier transformer for variable frequency speed governing with aviation baffle, further include: the low-voltage comb-shaped supporting strips are arranged in the low-voltage coil, and the high-voltage comb-shaped supporting strips are arranged in the high-voltage coil; the low-voltage comb-shaped stay and the high-voltage comb-shaped stay are both provided with alternate comb teeth, and the windings of the low-voltage coil and the high-voltage coil are both positioned between the comb teeth of the comb-shaped stay; the high-voltage comb-shaped stay is provided with a connecting section of an inward extending section, the low-voltage comb-shaped stay is provided with a connecting groove corresponding to the connecting section, and the connecting section is matched with the connecting groove to play a role in reinforcing and fixing the low-voltage coil and the high-voltage coil.
The utility model provides an among the dry-type rectifier transformer for variable frequency speed governing with aviation baffle, connecting groove adopts the shape stay of returning to hoop tightly outward.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses erect two or more aviation baffles in the low-voltage coil outside, make the wind gap of air admission coil diminish, can accelerate the air to pass the wind speed of coil under the unchangeable prerequisite of fan power to improve the radiating efficiency. The utility model discloses simple structure, the installation is maintained conveniently.
Drawings
Fig. 1 is a front view of the dry-type rectifier transformer with air deflector for variable frequency speed regulation according to the present invention.
Fig. 2 is a schematic diagram of a transformer body provided with air deflectors.
Fig. 3 is a sectional view of a transformer body provided with air deflectors.
FIG. 4 is a schematic illustration of the connection of low and high voltage comb struts.
Detailed Description
The present invention provides a dry rectifier transformer for variable frequency speed control with air deflector, which is described in more detail with reference to the schematic drawings, wherein the preferred embodiments of the present invention are shown, it being understood that those skilled in the art can modify the present invention described herein, while still achieving the advantageous effects of the present invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.
As shown in fig. 1 to 3, the utility model discloses a wind speed when solving among the prior art air current around the air admission when wire winding is low excessively arouses the technical problem that the radiating efficiency reduces, has proposed a dry-type rectifier transformer for variable frequency speed control with aviation baffle, and this dry-type rectifier transformer for variable frequency speed control with aviation baffle includes at least one transformer main part, generally speaking, has two or three transformer main parts that set up side by side, includes in every transformer main part: the coil comprises a high-voltage coil 1, a low-voltage coil 2 and an auxiliary coil 3, wherein the high-voltage coil 1 is positioned in the center of the coil, the low-voltage coil 2 is positioned on the radial outer side of the high-voltage coil 1, and the auxiliary coil 3 is positioned at the axial lower end of the low-voltage coil 2; the high-voltage coil 1 is of a cylindrical structure, the low-voltage coil 2 and the auxiliary coil 3 are of a continuous structure, and the low-voltage coil 2 comprises a phase-shifting coil and a main coil; the three-phase coils LA, LB and LC are arranged in an equilateral triangle, and all the head terminals are arranged on the side of the triangle ABC; an air passage is formed between the upper winding and the lower winding of the low-voltage coil 2; and the left side and/or the right side of the outer layer of the low-voltage coil 2 are/is provided with an air deflector 4, the air deflector 4 is in a bent shape which is the same as that of the low-voltage coil 2, and the air deflector 4 is used for improving the air inlet and outlet speed of the air passage and improving the air cooling efficiency. More specifically, the utility model provides an aviation baffle 4 adopts insulating material to make.
The technical concept of the utility model is that, when the transformer main part is in a transformer box, under the unchangeable prerequisite of outside fan power, the area that reduces the air inflow can improve the wind speed of air when the coil to improve the efficiency of forced air cooling to the coil cooling. The utility model discloses an aviation baffle 4 adopt crooked platy insulating material to make, and the crooked radian of aviation baffle 4 is fit for with low voltage coil 2's outer fringe. The utility model provides an aviation baffle 4 does not contact with the coil, therefore aviation baffle 4 can not reduce the heat dispersion of transformer.
The technical solution of the present invention will be explained in detail by exemplifying various embodiments according to different arrangement modes of the air deflector 4.
Example 1
In this embodiment 1, this dry-type rectifier transformer for variable frequency speed control with aviation baffle includes three transformer main parts, and three transformer main parts set up side by side in proper order, and three transformer is all installed in the transformer box, and the rear side of transformer box is equipped with a plurality of fans, and the air intake is at the front end of transformer box. Wherein, include in each transformer main part: the coil comprises a high-voltage coil 1, a low-voltage coil 2 and an auxiliary coil 3, wherein the high-voltage coil 1 is positioned in the center of the coil, the low-voltage coil 2 is positioned on the radial outer side of the high-voltage coil 1, and the auxiliary coil 3 is positioned at the axial lower end of the low-voltage coil 2; the high-voltage coil 1 is of a cylindrical structure, the low-voltage coil 2 and the auxiliary coil 3 are of a continuous structure, and the low-voltage coil 2 comprises a phase-shifting coil and a main coil; the three-phase coils LA, LB and LC are arranged in an equilateral triangle, and all the head terminals are arranged on the side of the triangle ABC; and an air channel is formed between the upper winding and the lower winding of the low-voltage coil 2.
The left side and/or the right side of the outer layer of the low-voltage coil 2 are/is provided with an air deflector 4, the air deflector 4 is in a bent shape the same as that of the low-voltage coil 2, and the distance between the air deflector 4 and the low-voltage coil 2 is 3-5 cm. The space between the air deflector 4 and the low-voltage coil 2 ensures that air can pass through the left side and the right side of the low-voltage coil 2, and the left side and the right side of the windings which are in contact with the air can be sufficiently cooled. In this embodiment, the air deflector 4 is made of a curved plate-shaped insulating material, and the curvature of the air deflector 4 is adapted to the outer edge of the low-voltage coil 2. The utility model provides an aviation baffle 4 does not contact with the coil, therefore aviation baffle 4 can not reduce the heat dispersion of transformer.
Example 2
In this embodiment 2, this dry-type rectifier transformer for variable frequency speed control with aviation baffle includes three transformer main parts, and three transformer main parts set up side by side in proper order, and three transformer is all installed in the transformer box, and the rear side of transformer box is equipped with a plurality of fans, and the air intake is at the front end of transformer box. Wherein, include in each transformer main part: the coil comprises a high-voltage coil 1, a low-voltage coil 2 and an auxiliary coil 3, wherein the high-voltage coil 1 is positioned in the center of the coil, the low-voltage coil 2 is positioned on the radial outer side of the high-voltage coil 1, and the auxiliary coil 3 is positioned at the axial lower end of the low-voltage coil 2; the high-voltage coil 1 is of a cylindrical structure, the low-voltage coil 2 and the auxiliary coil 3 are of a continuous structure, and the low-voltage coil 2 comprises a phase-shifting coil and a main coil; the three-phase coils LA, LB and LC are arranged in an equilateral triangle, and all the head terminals are arranged on the side of the triangle ABC; an air passage is formed between the upper winding and the lower winding of the low-voltage coil 2; the left side and/or the right side of the outer layer of the low-voltage coil 2 are/is provided with a wind deflector 4, the wind deflector 4 is in a bent shape the same as that of the low-voltage coil 2, and more specifically, the wind deflector 4 and the low-voltage coil 2 are coaxially arranged. The length of the air deflector 4 accounts for 1/6-1/4 of the outer edge of the low-voltage coil 2. Through the setting of both sides aviation baffle 4, reduce the area of contact of air and coil one-third to one-half, under the unchangeable prerequisite of external fan power, the area that reduces the air inflow can improve the wind speed when the air passes through the coil to improve the efficiency of forced air cooling to the coil cooling.
Example 3
In this embodiment 3, this dry-type rectifier transformer for variable frequency speed control with aviation baffle includes three transformer main parts, and three transformer main parts set up side by side in proper order, and three transformer is all installed in the transformer box, and the rear side of transformer box is equipped with a plurality of fans, and the air intake is at the front end of transformer box. Wherein, include in each transformer main part: the coil comprises a high-voltage coil 1, a low-voltage coil 2 and an auxiliary coil 3, wherein the high-voltage coil 1 is positioned in the center of the coil, the low-voltage coil 2 is positioned on the radial outer side of the high-voltage coil 1, and the auxiliary coil 3 is positioned at the axial lower end of the low-voltage coil 2; the high-voltage coil 1 is of a cylindrical structure, the low-voltage coil 2 and the auxiliary coil 3 are of a continuous structure, and the low-voltage coil 2 comprises a phase-shifting coil and a main coil; the three-phase coils LA, LB and LC are arranged in an equilateral triangle, and all the head terminals are arranged on the side of the triangle ABC; an air passage is formed between the upper winding and the lower winding of the low-voltage coil 2; and a wind deflector 4 is arranged on the left side and/or the right side of the outer layer of the low-voltage coil 2, and the wind deflector 4 is in the same bending shape as the low-voltage coil 2. More specifically, referring to fig. 2, the air deflector 4 is coaxially disposed with the low voltage coil 2. The fixed bracket 5 clamps the air deflector 4 on the periphery of the low-voltage coil 2 from the outside. Set up like this and not only be convenient for the installation maintenance, also improved the utility model discloses the aesthetic measure of product.
As shown in fig. 4, a low-voltage comb 6 is arranged in the low-voltage coil, and a high-voltage comb 7 is arranged in the high-voltage coil; the low-voltage comb-shaped stay 6 and the high-voltage comb-shaped stay 7 are both provided with alternate comb teeth, and the windings of the low-voltage coil 1 and the high-voltage coil 2 are both positioned between the comb teeth of the comb-shaped stays; the high-voltage comb-shaped stay 7 is provided with a connecting section 8 of an outward extending section, the low-voltage comb-shaped stay 8 is provided with a connecting groove 9 corresponding to the connecting section 8, and the connecting section 8 and the connecting groove 9 are matched with each other to play a role in reinforcing and fixing the low-voltage coil 1 and the high-voltage coil 2. Use above-mentioned stay the utility model discloses the insulating cylinder of high tension coil one side can be removed to the transformer for the air blows in high tension coil 1 from low tension coil 2 more freely in, has strengthened the forced air cooling effect. In addition, the connecting groove 9 is externally tightened by a clip 10.
The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.
Claims (8)
1. The dry-type rectifier transformer with the air guide plates for variable frequency speed regulation is characterized by comprising at least one transformer main body, wherein the transformer main body comprises: the high-voltage coil is positioned in the center of the coil, the low-voltage coil is positioned on the radial outer side of the high-voltage coil, and the auxiliary coil is positioned at the axial lower end of the low-voltage coil; the high-voltage coil is of a cylindrical structure, the low-voltage coil and the auxiliary coil are of continuous structures, and the low-voltage coil comprises a phase-shifting coil and a main coil; the three-phase coils LA, LB, LC are arranged in an equilateral triangle, and all the head terminals are arranged on the side of the triangle ABC; an air passage is formed between the upper winding and the lower winding of the low-voltage coil; and the left side and/or the right side of the outer layer of the low-voltage coil are/is provided with an air deflector, the air deflector is in a bent shape which is the same as that of the low-voltage coil, and the air deflector is used for improving the air inlet and outlet speed of the air passage and improving the air cooling efficiency.
2. The dry-type rectifier transformer with the air deflector for variable frequency speed regulation according to claim 1, wherein the distance between the air deflector and the low-voltage coil is 3-5 cm.
3. The dry-type rectifier transformer with the air deflector for variable frequency speed regulation according to claim 1, wherein the air deflector is coaxially arranged with the low-voltage coil.
4. The dry-type rectifier transformer with the air deflector for variable frequency speed regulation according to claim 1, wherein the wire length of the air deflector accounts for 1/6-1/4 of the outer edge of the low-voltage coil.
5. The dry-type rectifier transformer with the air deflector for variable frequency speed regulation according to any one of claims 1 to 4, wherein the outer surface of the air deflector is connected with at least one vertically arranged fixing bracket, the upper and lower ends of the fixing bracket are fixed with the transformer main body, and the fixing bracket hoops the air deflector on the periphery of the low-voltage coil from the outside.
6. The dry-type rectifier transformer with the air deflector for variable frequency speed regulation according to claim 5, wherein the air deflector is made of an insulating material.
7. The dry-type rectifier transformer with the air deflector for variable frequency speed regulation according to claim 5, further comprising: the low-voltage comb-shaped supporting strips are arranged in the low-voltage coil, and the high-voltage comb-shaped supporting strips are arranged in the high-voltage coil; the low-voltage comb-shaped stay and the high-voltage comb-shaped stay are both provided with alternate comb teeth, and the windings of the low-voltage coil and the high-voltage coil are both positioned between the comb teeth of the comb-shaped stay; the high-voltage comb-shaped stay is provided with a connecting section of an inward extending section, the low-voltage comb-shaped stay is provided with a connecting groove corresponding to the connecting section, and the connecting section is matched with the connecting groove to play a role in reinforcing and fixing the low-voltage coil and the high-voltage coil.
8. The dry-type rectifier transformer with the air deflector for variable frequency speed regulation according to claim 7, wherein the connecting groove is externally hooped by a clip-shaped stay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821632841.4U CN209804412U (en) | 2018-10-09 | 2018-10-09 | Dry-type rectifier transformer with air guide plates for variable frequency speed regulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821632841.4U CN209804412U (en) | 2018-10-09 | 2018-10-09 | Dry-type rectifier transformer with air guide plates for variable frequency speed regulation |
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| Publication Number | Publication Date |
|---|---|
| CN209804412U true CN209804412U (en) | 2019-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821632841.4U Active CN209804412U (en) | 2018-10-09 | 2018-10-09 | Dry-type rectifier transformer with air guide plates for variable frequency speed regulation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112447394A (en) * | 2020-11-24 | 2021-03-05 | 四川特种变压器厂 | Dry-type transformer coil winding equipment for variable frequency speed regulation |
| CN115394527A (en) * | 2022-09-01 | 2022-11-25 | 上海北变科技有限公司 | Dry-type phase-shifting rectifier transformer with air deflector for frequency conversion and speed regulation |
-
2018
- 2018-10-09 CN CN201821632841.4U patent/CN209804412U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112447394A (en) * | 2020-11-24 | 2021-03-05 | 四川特种变压器厂 | Dry-type transformer coil winding equipment for variable frequency speed regulation |
| CN112447394B (en) * | 2020-11-24 | 2024-05-03 | 四川特种变压器厂 | Dry-type transformer coil winding equipment for variable frequency speed regulation |
| CN115394527A (en) * | 2022-09-01 | 2022-11-25 | 上海北变科技有限公司 | Dry-type phase-shifting rectifier transformer with air deflector for frequency conversion and speed regulation |
| CN115394527B (en) * | 2022-09-01 | 2024-05-28 | 上海北变科技有限公司 | Dry phase-shifting rectifier transformer with air deflector for variable frequency speed regulation |
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