An assembled three-phase dry-type transformer

Abstract

The utility model belongs to the technical field of transformers, and in particular relates to an assembled three-phase dry-type transformer, comprising: a box body, a three-phase dry-type transformer main body is arranged inside the box body, and air intakes and air exhausts are respectively arranged on opposite side walls of the box body, and the air intakes and air exhausts are at different heights, and the air intakes and air exhausts generate bottom-up convection and internal-external circulation inside the box body; compared with the prior art: the utility model generates bottom-up air convection inside the box body by arranging air intakes and air exhausts on opposite side walls of the box body, and the air intakes and air exhausts are at different heights, thereby realizing internal-external circulation of the box body, so as to achieve the purpose of cooling the three-phase dry-type transformer main body more quickly and fully, and further, with the dual support of the box body and the filter screen, there will not be a large amount of dust or other impurities on the three-phase dry-type transformer main body.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformers, and in particular relates to an assembled three-phase dry-type transformer. Background Art

[0002] The three-phase dry-type transformer is a common power equipment. It uses the principle of electromagnetic induction to change the AC voltage. In electrical equipment and wireless circuits, three-phase dry-type transformers are often used for functions such as voltage increase and decrease, impedance matching and safety isolation. During the operation of the three-phase dry-type transformer, the current passing through the coil will generate heat, causing the internal temperature of the three-phase dry-type transformer to rise. If the heat cannot be removed in time, it will cause the temperature to be too high, thereby affecting the performance and life of the three-phase dry-type transformer.

[0003] The three-phase dry-type transformers currently on the market are usually equipped with fans on two opposite sides of the bottom of the three-phase dry-type transformer, and the fans are used to take away the heat from the three-phase dry-type transformer. However, since the fans are arranged on both sides of the bottom of the three-phase dry-type transformer, such an arrangement not only fails to achieve air convection, resulting in poor heat dissipation effect, but also blows away the dust on the ground and covers the three-phase dry-type transformer, thereby affecting the performance and life of the three-phase dry-type transformer. Utility Model Content

[0004] The purpose of the utility model is to provide an assembled three-phase dry-type transformer to solve the problems raised in the above background technology.

[0005] The technical solution adopted by the utility model is:

[0006] An assembled three-phase dry-type transformer comprises: a box body, a three-phase dry-type transformer body is arranged inside the box body, an air suction port and an air exhaust port are respectively arranged on two opposite side walls of the box body, the air suction port and the air exhaust port are at different heights, and the air suction port and the air exhaust port enable bottom-up convection and internal-external circulation to be generated inside the box body;

[0007] in,

[0008] The air suction port is also provided with a filter screen.

[0009] Optionally, the air suction port comprises:

[0010] A first air suction port is provided through a side wall adjacent to the bottom of the box body, and the first air suction port is lower than the bottom of the three-phase dry-type transformer body;

[0011] The second air suction port is arranged adjacent to the first air suction port, and the second air suction port and the first air suction port are on the same horizontal line.

[0012] Optionally, a filter is provided on the first air suction port, and the filter is detachably connected to the first air suction port.

[0013] Optionally, a filter is provided on the second air suction port, and the filter is detachably connected to the second air suction port.

[0014] Optionally, the air outlet includes:

[0015] A first air outlet is provided through the other side wall adjacent to the top of the box body, wherein the first air outlet is higher than the top of the three-phase dry-type transformer body;

[0016] The second air outlet is arranged adjacent to the first air outlet, and the second air outlet is on the same horizontal line as the first air outlet.

[0017] Optionally, the assembled three-phase dry-type transformer further includes:

[0018] A high-voltage terminal block, which is fixedly arranged on the top of the box body, and the high-voltage terminal block is electrically connected to the high-voltage side of the three-phase dry-type transformer body;

[0019] The low-voltage terminal is fixedly arranged on the top of the box body, and the low-voltage terminal is electrically connected to the low-voltage side of the three-phase dry-type transformer body.

[0020] Optionally, a shock-absorbing pad is provided at the bottom of the three-phase dry-type transformer body, and the shock-absorbing pad is fixedly connected to the inner bottom wall of the box body.

[0021] Optionally, a grounding base is provided at the bottom of the box, and the grounding base is fixedly connected to the box.

[0022] Optionally, a pulley is disposed inside the grounding base, and the pulley is fixedly connected to the grounding base.

[0023] Optionally, a shell door is provided on one side wall of the box body, and the shell door is movably connected to the box body via a hinge.

[0024] Compared with the prior art, the beneficial effects of the utility model are:

[0025] The utility model provides air intake and air exhaust ports on the two opposite side walls of the box, and the air intake and air exhaust ports are arranged at different heights, so that air convection from bottom to top is generated inside the box, thereby realizing internal and external circulation of the box. The convective air takes the heat out of the box and the air inside and outside the box circulates repeatedly, so as to achieve the purpose of cooling the main body of the three-phase dry-type transformer more quickly and fully. Furthermore, a box is provided outside the main body of the three-phase dry-type transformer, and the box blocks most of the dust and other impurities from the outside for the main body of the three-phase dry-type transformer. Furthermore, a filter screen can be detachably provided on the air intake port, and the filter screen further prevents dust and other impurities from entering the interior of the box. Under the dual support of the box and the filter screen, there will not be a large amount of dust or other impurities on the main body of the three-phase dry-type transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the overall structure in this application.

[0028] Figure 2 It is a structural schematic diagram of the three-phase dry-type transformer body and the grounding base in this application.

[0029] Figure 3 Schematic diagram of the location of the exhaust vent in this application.

[0030] Reference numerals:

[0031] 1. Box body;

[0032] 2. Three-phase dry-type transformer body; 200, phase A; 201, phase B; 202, phase C; 210, phase a; 211, phase b; 212, phase c;

[0033] 31, air intake port; 310, first air intake port; 311, second air intake port; 32, air exhaust port; 320, first air exhaust port; 321, second air exhaust port;

[0034] 4. Pulley; 5. Shock-absorbing pad; 6. Housing door; 7. Grounding base; 8. Hinge; 9. High-voltage terminal; 10. Low-voltage terminal. DETAILED DESCRIPTION

[0035] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the present invention are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0041] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0042] like Figure 1-Figure 3 As shown, the embodiment of the utility model provides an assembled three-phase dry-type transformer, including: a box 1, a three-phase dry-type transformer body 2, a high-voltage terminal 9, a low-voltage terminal 10, a fan, a shock-absorbing pad 5, a grounding base 7, a pulley 4 and a shell door 6. Among them,

[0043] The box body 1 is a rectangular parallelepiped structure with a cavity therein. One side of the box body 1 is an open structure, and a three-phase dry-type transformer body 2 is arranged in the cavity. The bottom of the three-phase dry-type transformer body 2 is fixedly connected to the bottom of the box body 1 by bolts and nuts. The top of the box body 1 is provided with a high-voltage terminal 9, which is three and arranged in parallel at the top of the box body 1, and is respectively electrically connected to the high-voltage side of the three-phase dry-type transformer body 2, that is, phase A 200, phase B 201 and phase C 202. The function of the high-voltage terminal 9 is to provide an interface so that the power supply can be connected to the high-voltage side of the three-phase dry-type transformer body 2, thereby realizing the transmission and conversion of electric energy. Adjacent to the high-voltage terminal 9, which is also arranged through the top of the box body 1, is the low-voltage terminal 10, which is also three and arranged in parallel at the top of the box body 1, and is respectively electrically connected to the low-voltage side of the three-phase dry-type transformer body 2, that is, phase a 210, phase b 211 and phase c 212. The function of the low-voltage terminal 10 is also to provide an interface to connect the external circuit to the low-voltage side of the three-phase dry-type transformer body 2, thereby converting the electric energy of the high-voltage transmission line into the low-voltage electric energy required by the user to meet daily electricity needs.

[0044] The fan is disposed through the box body 1, and includes an air inlet 31 and an air outlet 32. The air inlet 31 and the air outlet 32 ​​are disposed through the two opposite outer side walls of the box body 1, respectively, and the heights of the air outlet 32 ​​and the air inlet 31 are different. In the present embodiment, preferably, the air inlet 31 and the air outlet 32 ​​are disposed through the left and right outer side walls of the box body 1, respectively. The air inlet 31 is mainly provided to suck the air outside the box body 1 into the inside of the box body 1, so that the inside of the box body 1 is filled with air. In order to improve the efficiency of air suction, in the present embodiment, the air inlet 31 includes a first air inlet 310 and a second air inlet 311. The first air inlet 310 is set through the side wall adjacent to the bottom of the box body 1, and the first air inlet 310 is lower than the bottom of the three-phase dry-type transformer body 2. The air inlet of the first air inlet 310 is detachably provided with a filter (not shown in the figure). The filter is mainly provided to prevent dust and other impurities from entering the interior of the box body 1, thereby covering the three-phase dry-type transformer body 2. The second air inlet 311 is set through the side wall adjacent to the bottom of the box body 1. The second air inlet 311 and the first air inlet 310 are on the same horizontal line. The size of the second air inlet 311 is consistent with that of the first air inlet 310. Similarly, the second air inlet 311 is also lower than the bottom of the three-phase dry-type transformer body 2. In order to prevent dust and other impurities from entering the interior of the box body 1 and covering the three-phase dry-type transformer body 2, the air inlet of the second air inlet 311 is also detachably provided with a filter (not shown in the figure). The first air inlet 310 and the second air inlet 311 are arranged below the bottom of the three-phase dry-type transformer body 2 mainly to increase the coverage area of ​​air inside the box body 1 so that the three-phase dry-type transformer body 2 is completely surrounded by air.

[0045] The exhaust port 32 is mainly provided to discharge the air inside the box body 1 to the outside of the box body 1. In order to further improve the exhaust efficiency, the exhaust port 32 in this embodiment also includes a first exhaust port 320 and a second exhaust port 321. The first exhaust port 320 is provided on the other side wall of the box body 1 relative to the first air inlet 310 and is adjacent to the top of the box body 1, and the first exhaust port 320 is higher than the first air inlet 310. The first exhaust port 320 is higher than the top of the three-phase dry-type transformer body 2. The second exhaust port 321 is also on the same horizontal line as the first exhaust port 320, and its size is consistent with that of the first exhaust port 320. Similarly, the second exhaust port 321 is also higher than the top of the three-phase dry-type transformer body 2. The first exhaust port 320 and the second exhaust port 321 are provided higher than the top of the three-phase dry-type transformer body 2 mainly to be able to more fully absorb the air inside the box body 1.

[0046] When in use, first start the first air inlet 310 and the second air inlet 311 at the same time, and the external air is sucked into the bottom of the box 1 under the action of the first air inlet 310 and the second air inlet 311, and then start the first air outlet 320 and the second air outlet 321 at the same time, and under the action of the first air outlet 320 and the second air outlet 321, the air at the bottom of the box 1 begins to move upward, and in the process of the air moving upward, it moves upward together with the heat generated by the three-phase dry-type transformer body 2, so that the air entering the box 1 from the first air inlet 310 and the second air inlet 311 takes away the heat generated by the three-phase dry-type transformer body 2. From the process of air being sucked into the box 1 by the air inlet 31 and then being discharged to the outside of the box 1 by the air outlet 32, air convection from bottom to top is generated inside the box 1, thereby realizing the internal and external circulation of the box 1. The convective air brings the heat generated by the three-phase dry-type transformer body 2 out of the box body 1, and then the air intake port 31 inhales the heat and the air exhaust port 32 exhausts the heat. The air inside and outside the box body 1 circulates and alternates repeatedly in this way, so as to achieve the purpose of cooling the three-phase dry-type transformer body 2. Furthermore, the first air intake port 310 and the second air intake port 311 are fixedly provided with a filter. The setting of the filter effectively prevents dust and other impurities from entering the inside of the box body 1 through the first air intake port 310 and the second air intake port 311, so that a large amount of dust or other impurities will not cover the three-phase dry-type transformer body 2.

[0047] Furthermore, in order to reduce the noise generated by the collision between the three-phase dry-type transformer body 2 and the bottom of the box body 1 during operation, a shock-absorbing pad 5 is provided at the bottom of the three-phase dry-type transformer body 2, and the shock-absorbing pad 5 is fixedly connected to the inner bottom wall of the box body 1, and the shock-absorbing pad 5 is made of rubber. The shock-absorbing pad 5 can absorb and reduce vibration, and provide stable support and protection.

[0048] Furthermore, a grounding base 7 is fixedly provided at the bottom of the box 1. In order to further improve the stability of the box 1, in this embodiment, there are two grounding bases 7, which are respectively provided on both sides of the box 1. The grounding base 7 is fixedly connected to the bottom of the box 1 by bolts and nuts. In order to move the three-phase dry-type transformer body 2 more quickly and conveniently, a pulley 4 is also provided inside the grounding base 7.

[0049] Finally, in order to facilitate the inspection of the three-phase dry-type transformer body 2 or to facilitate the inspection of the three-phase dry-type transformer body 2, in this embodiment, a shell door 6 is provided on one side of the box body 1 where an opening is provided. The shell door 6 is movably connected to the box body 1 through a hinge 8. The box body 1 can be controlled to be in an open state or a closed state through the shell door 6. When the three-phase dry-type transformer body 2 in the box body 1 needs to be inspected or inspected, the shell door 6 can be manually opened to achieve the inspection or inspection.

[0050] In summary, in the utility model, the air inlet 31 and the air outlet 32 ​​are respectively arranged on the two opposite side walls of the box body 1. First, the air is gathered inside the box body 1 through the air inlet 31, and the air inside the box body 1 is fully integrated with the heat inside the box body 1, and then discharged centrally through the air outlet 32. Finally, the air inlet 31 and the air outlet 32 ​​are arranged at different heights to generate air convection from bottom to top inside the box body 1, thereby realizing the internal and external circulation of the box body 1. The convective air brings the heat out of the box body 1 to the outside of the box body 1, and the air inside and outside the box body 1 circulates repeatedly, thereby achieving the purpose of cooling the main body 2 of the three-phase dry-type transformer. In this embodiment, the convection from bottom to top generated inside the box body 1 can transfer the heat generated by the main body 2 of the three-phase dry-type transformer to the outside of the box body 1 more fully and quickly, thereby accelerating the cooling speed of the main body 2 of the three-phase dry-type transformer and improving the cooling effect. Furthermore, a box body 1 is arranged on the outside of the three-phase dry-type transformer main body 2, and the box body 1 blocks most of the external dust and other impurities for the three-phase dry-type transformer main body 2. Furthermore, a filter screen is detachably arranged on the air intake port 31, and the setting of the filter screen further prevents dust and other impurities from entering the box body 1. With the dual support of the box body 1 and the filter screen, there will not be a large amount of dust or other impurities on the three-phase dry-type transformer main body 2.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An assembled three-phase dry-type transformer, characterized in that: include: A box body (1) is provided with a three-phase dry-type transformer body (2) inside the box body (1), and air inlets (31) and air outlets (32) are respectively provided on opposite side walls of the box body (1), the air inlets (31) and the air outlets (32) being at different heights, the air inlets (31) and the air outlets (32) causing bottom-up convection and internal-external circulation to be generated inside the box body (1); wherein a filter screen is also provided on the air inlet (31).

2. The assembled three-phase dry-type transformer according to claim 1, characterized in that: The air suction port (31) comprises: a first air suction port (310) which is arranged through a side wall adjacent to the bottom of the box body (1), and the first air suction port (310) is lower than the bottom of the three-phase dry-type transformer body (2); The second air suction port (311) is arranged adjacent to the first air suction port (310), and the second air suction port (311) and the first air suction port (310) are on the same horizontal line.

3. The assembled three-phase dry-type transformer according to claim 2, characterized in that: The first air suction port (310) is provided with a filter screen, and the filter screen is detachably connected to the first air suction port (310).

4. The assembled three-phase dry-type transformer according to claim 2, characterized in that: The second air suction port (311) is provided with a filter screen, and the filter screen is detachably connected to the second air suction port (311).

5. The assembled three-phase dry-type transformer according to claim 1, characterized in that: The exhaust port (32) comprises: a first exhaust port (320) which is arranged through the other side wall adjacent to the top of the box body (1), the first exhaust port (320) being higher than the top of the three-phase dry-type transformer body (2); and a second exhaust port (321) which is arranged adjacent to the first exhaust port (320), the second exhaust port (321) being on the same horizontal line as the first exhaust port (320).

6. The assembled three-phase dry-type transformer according to claim 1, characterized in that: The assembled three-phase dry-type transformer further comprises: a high-voltage terminal (9) fixedly arranged on the top of the box (1), the high-voltage terminal (9) being electrically connected to the high-voltage side of the three-phase dry-type transformer body (2); and a low-voltage terminal (10) fixedly arranged on the top of the box (1), the low-voltage terminal (10) being electrically connected to the low-voltage side of the three-phase dry-type transformer body (2).

7. The assembled three-phase dry-type transformer according to claim 1, characterized in that: A shock-absorbing pad (5) is provided at the bottom of the three-phase dry-type transformer body (2), and the shock-absorbing pad (5) is fixedly connected to the inner bottom wall of the box body (1).

8. The assembled three-phase dry-type transformer according to claim 1, characterized in that: A grounding base (7) is provided at the bottom of the box body (1), and the grounding base (7) is fixedly connected to the box body (1).

9. The assembled three-phase dry-type transformer according to claim 8, characterized in that: A pulley (4) is arranged inside the grounding base (7), and the pulley (4) is fixedly connected to the grounding base (7).

10. The assembled three-phase dry-type transformer according to claim 1, characterized in that: A shell door (6) is provided on one side wall of the box body (1), and the shell door (6) is movably connected to the box body (1) via a hinge (8).

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