Low-loss high-impedance power transformer

Abstract

The utility model relates to the technical field of transformers, and discloses a low-loss high-impedance power transformer which comprises a transformer body, a cooling fin set installed on the surface of the transformer body, a supporting base installed at the bottom of the transformer body, an air guide box and an air blowing pump which are sleeved with the supporting base, and the output end of the air blowing pump is sleeved with the air guide box. A composite gas guide pipe fitting is sleeved with the gas guide box, and a first drainage pipe facing the cooling fin set is installed at the end structure, close to the surface of the transformer body, of the composite gas guide pipe fitting. According to the utility model, the air guide box, the air blowing pump, the four composite air guide pipe fittings and the plurality of first drainage pipes are combined with the supporting base, the transformer body and the radiating fin group for use; the air blowing pump can perform automatic air blowing and ash removal treatment on the corresponding cooling fin sets through the air guide box, the four composite air guide pipe fittings and the multiple first drainage pipes associated with the four composite air guide pipe fittings, and the long-time excellent cooling effect of the cooling fin sets is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, specifically to a low-loss, high-impedance power transformer. Background Technology

[0002] Existing high-impedance transformers typically refer to transformers whose short-circuit voltage percentage exceeds the percentage specified by national standards for the same voltage level and capacity. There are two ways to implement high-impedance transformers: one is to split the medium-voltage winding into two parts to increase the leakage reactance of the winding; the other is to increase the leakage reactance of the winding by connecting a reactor in series with leads at the end of the low-voltage winding of the transformer.

[0003] However, with the diversification of usage environments, high-impedance transformers still have some shortcomings in their hardware structure. For example, in dusty environments, the heat sinks on the outer sheath of high-impedance transformers accumulate dust quickly, which affects the heat dissipation effect and indirectly increases the operating losses of high-impedance transformers. Although there are technical solutions to the above problems in the existing technology, the problems of large footprint and limited functionality cannot be avoided. Therefore, after multiple experiments, the applicant will provide a low-loss high-impedance power transformer to solve the technical problems of the existing technology. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a low-loss, high-impedance power transformer, solving the problems mentioned in the background section.

[0005] This utility model provides the following technical solution: a low-loss, high-impedance power transformer, including a transformer body, a heat sink assembly mounted on the surface of the transformer body, and a support base mounted on the bottom of the transformer body. The support base is fitted with an air guide box and an air pump. The output end of the air pump is fitted inside the air guide box. The air guide box is fitted with a composite air guide pipe, and the end of the composite air guide pipe near the surface of the transformer body is equipped with a first drain pipe facing the heat sink assembly.

[0006] Preferably, the bottom of the support base has through-holes on both sides of the structure to facilitate subsequent installation and fixing, and the top of the support base is fixedly connected to the bottom surface of the transformer body.

[0007] Preferably, the number of heat sink groups is the same as the number of composite air duct components, both being four. The four heat sink groups are respectively installed on the two sides and the front and rear end surfaces of the transformer body to ensure that the transformer body has sufficient heat dissipation area. The four composite air duct components are arranged at equal intervals along the circumference of the air duct box, and a fixing seat is installed between the surface of the air duct box and the inner wall of the support base.

[0008] Preferably, each of the four composite air guide tubes includes a positioning sleeve, a movable guide tube, and a transverse air guide tube. One end of the positioning sleeve is fixedly sleeved inside the air guide box and communicates with the internal space of the air guide box. One end of the movable guide tube is snapped into the inner side of the other end of the positioning sleeve and a piston block snapped into the inside of the positioning sleeve is fixed thereon. A return spring is installed between the surface of the piston block and the inner wall of the other end of the positioning sleeve.

[0009] The transverse air guide tube, as the end structure of the composite air guide tube near the surface of the transformer body, is connected to the other end of the movable guide tube. The transverse air guide tube can expand and move out or reset and be stored in the support base along with the movable guide tube. One end of the movable guide tube has an air inlet hole that communicates with its own space. The inner wall of the other end of the positioning sleeve has an internal air guide channel that can communicate with and be adjusted with the air inlet hole. While providing air guide and air delivery, the composite air guide tube can retract into the support base when not in use, thereby reducing the footprint of its structure.

[0010] Preferably, there are at least two first drainage pipes arranged at equal intervals along the surface of the transverse air guide pipe, thereby ensuring the area of ​​air blowing cleaning, and the first drainage pipe can be assembled with the support base along with the transverse air guide pipe.

[0011] Preferably, the corner structure of the transformer body has a through mounting hole, and a second drain pipe that communicates with the air guide box is installed in the through mounting hole. One end of the second drain pipe has a bent structure facing the top surface of the transformer body. The second drain pipe can guide the air output by the air pump to the air guide box to the top surface of the transformer body for air blowing dust removal.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model consists of a multi-functional auxiliary structure composed of an air guide box, an air pump, four composite air guide pipes, and several first drain pipes. After being used in combination with the support base, transformer body, and heat sink assembly, the air pump can automatically blow dust off the corresponding heat sink assembly through the air guide box, the four composite air guide pipes, and the multiple first drain pipes associated with the four composite air guide pipes, ensuring the heat sink assembly has excellent heat dissipation effect for a long time, thereby reducing the losses of the transformer body caused by poor heat dissipation.

[0014] 2. The multi-functional auxiliary structure of this utility model has four composite air guide pipes that can be automatically stored inside the support base when not in use, thereby reducing the footprint of the multi-functional auxiliary structure and avoiding squeezing the installation space of the transformer body.

[0015] 3. When the four second drain pipes provided in this utility model are used in conjunction with the above-mentioned multi-functional auxiliary structure, the air delivered by the air pump to the air guide box can be directed to the top surface of the transformer body for air blowing dust removal. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a three-dimensional schematic diagram of the structural support base of this utility model;

[0018] Figure 3 This is a top view of the structural support base of this utility model;

[0019] Figure 4 This is a cross-sectional schematic diagram of the composite air guide tube of this utility model;

[0020] Figure 5 The structure of this utility model Figure 4 Enlarged diagram of point A in the middle.

[0021] In the diagram: 1. Transformer body; 2. Heat sink assembly; 3. Support base; 4. Air guide box; 5. Air pump; 6. Composite air guide pipe; 61. Positioning sleeve; 62. Movable guide pipe; 63. Piston block; 64. Return spring; 65. Horizontal air guide pipe; 66. Internal air guide channel; 67. Air inlet; 7. First drain pipe; 8. Second drain pipe. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-3 A low-loss, high-impedance power transformer includes a transformer body 1, a heat sink assembly 2 mounted on the surface of the transformer body 1, and a support base 3 mounted on the bottom of the transformer body 1. The support base 3 is fitted with an air guide box 4 and an air pump 5. The output end of the air pump 5 is fitted inside the air guide box 4. The air guide box 4 is fitted with a composite air guide pipe 6, and the end structure of the composite air guide pipe 6 near the surface of the transformer body 1 is equipped with a first drain pipe 7 facing the heat sink assembly 2.

[0024] The number of heat sink groups 2 is the same as the number of composite air guide pipes 6, both being four. The four heat sink groups 2 are respectively installed on the two sides and the front and rear end surfaces of the transformer body 1 to ensure that the transformer body 1 has sufficient heat dissipation area. The four composite air guide pipes 6 are arranged at equal intervals along the circumference of the air guide box 4, and a fixing seat is installed between the surface of the air guide box 4 and the inner wall of the support base 3.

[0025] The support base 3 has through-holes on both sides of its bottom structure to facilitate subsequent installation and fixing, and the top of the support base 3 is fixedly connected to the bottom surface of the transformer body 1.

[0026] During use, to prevent dust accumulation on the surface of heat sink assembly 2, automatic air blowing can be performed periodically using air pump 5 and its related structures, as follows:

[0027] Start the air pump 5, and the air pump 5 output end will deliver air into the air box 4. Then the air inside the air box 4 will enter the first guide pipe 7 through the flow channels provided by the four composite air guide pipes 6. Then, the air will be blown to the corresponding heat sink group 2 through the first guide pipe 7 for dust removal, thereby ensuring the heat sink group 2 has a good heat dissipation effect for a long time.

[0028] Please see Figure 1-5 Each of the four composite air guide tubes 6 includes a positioning sleeve 61, a movable guide tube 62, and a transverse air guide tube 65. One end of the positioning sleeve 61 is fixedly sleeved inside the air guide box 4 and communicates with the internal space of the air guide box 4. One end of the movable guide tube 62 is snapped into the inner side of the other end of the positioning sleeve 61 and a piston block 63 is fixedly snapped into the inside of the positioning sleeve 61. A return spring 64 is installed between the surface of the piston block 63 and the inner wall of the other end of the positioning sleeve 61.

[0029] The transverse air guide tube 65, as the end structure of the composite air guide tube 6 near the surface of the transformer body 1, is connected to the other end of the movable guide tube 62. The transverse air guide tube 65 can expand and move out or reset and be stored in the support base 3 along with the movable guide tube 62. One end of the movable guide tube 62 has an air inlet 67 that communicates with its own space. The inner wall of the other end of the positioning sleeve 61 has an internal air guide channel 66 that can communicate with and be adjusted to the air inlet 67. The composite air guide tube 6 provides air guide and air supply while retracting into the support base 3 when not in use, thereby reducing the footprint of its structure.

[0030] The number of first drainage pipes 7 is not less than two and they are arranged at equal intervals along the surface of the transverse air guide pipe 65, thereby ensuring the area of ​​air blowing dust removal, and the first drainage pipes 7 can be assembled with the transverse air guide pipe 65 and the support base 3.

[0031] During use, considering that the additional structure may encroach on the installation space of the transformer body 1, the four composite air guide pipes 6 are designed to be retractable when not in use, as follows:

[0032] Start the air pump 5, and the air pump 5 output end will deliver air into the air box 4. Then the air inside the air box 4 will first enter the positioning sleeve 61. As the air is continuously delivered, the pressure inside the positioning sleeve 61 will gradually increase, and then push the piston block 63, the movable guide tube 62 and the transverse air guide tube 65 to adjust the displacement. The reset spring 64 is stretched and deformed. After the piston block 63 has reached its maximum displacement, the transverse air guide tube 65 and the multiple first drain tubes 7 set on the transverse air guide tube 65 will move out of the inner wall of the support base 3 and be able to output towards the heat sink group 2 corresponding to the surface of the transformer body 1.

[0033] At the same time, the internal airflow channel 66 will be aligned and connected with the air inlet 67 to form a transition channel. Then, the air inside the positioning sleeve 61 will enter the interior of the movable guide tube 62 through the transition channel, and then be diverted to the interior of multiple first guide tubes 7 through the transverse air guide tube 65. Finally, the air will be automatically blown and cleaned through the multiple first guide tubes 7 towards the corresponding heat sink group 2.

[0034] After a cycle of operation is completed, the air pump 5 is turned off, and then the atmospheric pressure inside the positioning sleeve 61 is broken. The reset spring 64 will drive the piston block 63, the movable guide tube 62, the transverse air guide tube 65, and the multiple first drainage tubes 7 on the transverse air guide tube 65 to re-reset inside the support base 3 to retract and make room, thereby reducing the floor space.

[0035] Please see Figure 1-2 The corner structure of the transformer body 1 has through mounting holes, and a second drain pipe 8 that communicates with the air guide box 4 is installed in the through mounting holes. One end of the second drain pipe 8 is a bent structure facing the top surface of the transformer body 1. The second drain pipe 8 can guide the air output by the air pump 5 to the air guide box 4 to the top surface of the transformer body 1 for air blowing dust removal.

[0036] During use, considering the issue of dust accumulation on the top surface of the transformer body 1, the four second drainage pipes 8, in conjunction with the air guide box 4, can perform synchronous air-blowing dust removal on the top surface of the transformer body 1, as detailed below:

[0037] Start the air pump 5, and the air pump 5 output end will deliver air into the air box 4. Then, part of the air inside the air box 4 will be diverted to the surface of the four second guide pipes 8, and then the top surface of the transformer body 1 will be automatically cleaned by air blowing through the bent ends of the four second guide pipes 8.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Additionally, in the accompanying drawings of this utility model, the fill patterns are merely for distinguishing layers and do not constitute any other limitation.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-loss, high-impedance power transformer, comprising a transformer body (1), a heat sink assembly (2) mounted on the surface of the transformer body (1), and a support base (3) mounted on the bottom of the transformer body (1), characterized in that: The support base (3) is fitted with an air guide box (4) and an air pump (5). The output end of the air pump (5) is fitted inside the air guide box (4). The air guide box (4) is fitted with a composite air guide pipe (6). The end structure of the composite air guide pipe (6) near the surface of the transformer body (1) is equipped with a first drain pipe (7) facing the heat sink assembly (2).

2. The low-loss, high-impedance power transformer according to claim 1, characterized in that: The support base (3) has through-holes on both sides of its bottom structure, and the top of the support base (3) is fixedly connected to the bottom surface of the transformer body (1).

3. A low-loss, high-impedance power transformer according to claim 1, characterized in that: The number of heat sink groups (2) is the same as the number of composite air guide pipes (6), both being four. The four heat sink groups (2) are respectively installed on the two sides and the front and rear end surfaces of the transformer body (1). The four composite air guide pipes (6) are arranged at equal intervals along the circumference of the air guide box (4), and a fixing seat is installed between the surface of the air guide box (4) and the inner wall of the support base (3).

4. A low-loss, high-impedance power transformer according to claim 1, characterized in that: Each of the four composite air guide tubes (6) includes a positioning sleeve (61), a movable guide tube (62), and a transverse air guide tube (65). One end of the positioning sleeve (61) is fixedly sleeved inside the air guide box (4) and communicates with the internal space of the air guide box (4). One end of the movable guide tube (62) is snapped into the inner side of the other end of the positioning sleeve (61) and a piston block (63) is fixedly snapped into the inside of the positioning sleeve (61). A return spring (64) is installed between the surface of the piston block (63) and the inner wall of the other end of the positioning sleeve (61). The transverse air guide tube (65) is a composite air guide tube (6) with its end structure close to the surface of the transformer body (1) and connected to the other end of the movable guide tube (62). The transverse air guide tube (65) can expand out or be reset and stored in the support base (3) along with the movable guide tube (62). One end of the movable guide tube (62) has an air inlet hole (67) that communicates with its own space. The inner wall of the other end of the positioning sleeve (61) has an internal air guide channel (66) that communicates with and is adjustable to the air inlet hole (67).

5. A low-loss, high-impedance power transformer according to claim 1, characterized in that: The number of the first drainage tubes (7) is not less than two and they are arranged at equal intervals along the surface of the transverse air guide tube (65), and the first drainage tubes (7) can be assembled with the support base (3) along with the transverse air guide tube (65).

6. A low-loss, high-impedance power transformer according to claim 1, characterized in that: The corner structure of the transformer body (1) has through mounting holes, and a second drain pipe (8) that communicates with the air guide box (4) is installed in the through mounting holes. One end of the second drain pipe (8) is a bent structure facing the top surface of the transformer body (1).

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