A transformer with a modular insulation support structure against short-time transient shocks

Abstract

The present invention discloses a transformer with a modular insulation support structure against short-time transient impacts, which includes an outer casing. Inside the outer casing, an inner casing is provided, and between the outer casing and the inner casing, there are several modular insulation support components against short-time transient impacts. Inside the inner casing, multiple groups of iron core windings are provided. On the outer wall of the inner casing, multiple groups of first limiting clips are provided, and on the inner wall of the outer casing, multiple groups of second limiting clips are provided. An insertion slot is formed between the first limiting clip and the second limiting clip. A high-temperature resistant rubber block is used to be inserted into the insertion slot from top to bottom, and a rubber support rod is provided inside the high-temperature resistant rubber block. By setting the first limiting clip, the second limiting clip, and the high-temperature resistant rubber block, under a severe current impact, the protruding part of the inner casing is blocked by the high-temperature resistant rubber block between the first limiting clip and the second limiting clip, realizing the function of the modular insulation support transformer against short-time transient impacts.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and particularly to an anti-short-time transient impact transformer with a modular insulation support structure. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. Its main components are the housing of the outer shell and the iron core winding inside. In electrical equipment and radio circuits, it is commonly used for stepping up or down voltages, matching impedances, safety isolation, etc.

[0003] Most of the commonly available transformers on the market currently are similar in overall structure. The outer shell wraps the iron core winding, and the inside is filled with insulating oil. There are some functional deficiencies in the actual use process, and there is room for improvement. There is only insulating oil filled between the outer shell and the iron core winding. When the transformer encounters an external short-time transient impact, once the shell is deformed inward or outward, the outer shell is prone to breakage and leakage, causing a short circuit and fire, with greater danger, and it does not have the function of modular insulation support against short-time transient impact. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides an anti-short-time transient impact transformer with a modular insulation support structure to solve the problem of not having the function of modular insulation support against short-time transient impact proposed in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solution: An anti-short-time transient impact transformer with a modular insulation support structure, including an outer shell, an inner shell, a modular insulation support assembly, and a heat dissipation assembly. An inner shell is provided inside the outer shell, and several modular insulation support assemblies for anti-short-time transient impact are provided between the outer shell and the inner shell; multiple groups of iron core windings are provided inside the inner shell; the modular insulation support assembly includes a first limiting clip, a second limiting clip, a high-temperature resistant rubber block, and a rubber support rod. Multiple groups of first limiting clips are provided on the outer wall of the inner shell, and multiple groups of second limiting clips are provided on the inner wall of the outer shell. An insertion slot is formed between the first limiting clip and the second limiting clip, and the high-temperature resistant rubber block is used to be inserted into the insertion slot from top to bottom, and a rubber support rod is provided inside the high-temperature resistant rubber block.

[0006] Further, an oil passage groove is provided inside the high-temperature resistant rubber block, multiple groups of rubber support rods are integrally formed inside the oil passage groove of the high-temperature resistant rubber block, and a handle is adhesively connected to the top of the high-temperature resistant rubber block.

[0007] Further, the first limiting clip and the second limiting clip have the same size, and the positions of multiple groups of first limiting clips on the inner shell correspond to the positions of multiple groups of second limiting clips on the outer shell one by one.

[0008] Furthermore, the external shape and dimensions of the high-temperature resistant rubber block are adapted to the shape and dimensions of the insertion slot formed by the first limiting clip and the second limiting clip, and the high-temperature resistant rubber block can slide up and down along the inside of the insertion slot.

[0009] Furthermore, the outer housing includes a bottom carrier, a top fixing frame, insulators, and lifting lugs. The bottom carrier is fixedly connected to the bottom end of the outer housing. The front and rear ends of the top of the outer housing are respectively fixedly connected to the top fixing frames. Multiple groups of insulators are arranged in the middle of the top of the top fixing frames. Lifting lugs are respectively welded on both sides of the top of the top fixing frames.

[0010] Furthermore, the bottom end of the high-temperature resistant rubber block is in contact with the inner bottom end of the outer housing, and the top end of the handle is in contact with the inner top end of the outer housing. The high-temperature resistant rubber block and the rubber support rod are elastic.

[0011] Furthermore, the interior of the inner housing is filled with insulating oil, the space between the outer housing and the inner housing is filled with insulating oil, and the vertical centerlines of the outer housing and the inner housing coincide.

[0012] Furthermore, right-side distribution cavities are respectively fixedly connected to the upper and lower ends on the right side of the outer housing, left-side distribution cavities are respectively fixedly connected to the upper and lower ends on the left side of the outer housing. Multiple groups of conducting flat tubes are horizontally welded between one side of the right-side distribution cavity and the left-side distribution cavity. Multiple groups of metal fins are welded between the multiple groups of conducting flat tubes. An oil inlet is arranged on the left side of the left-side distribution cavity, and an oil outlet is arranged on the right side of the right-side distribution cavity. Two oil return ports are fixedly connected to the right side of the outer housing. The oil return ports are connected to one end of the oil pump through pipelines. A first connecting pipe is fixedly connected between the other end of the oil pump and the oil outlet. Two oil extraction ports are fixedly connected to the left side of the outer housing. A second connecting pipe is fixedly connected between the other end of the oil extraction port and the oil inlet. Fixing plate frames are fixedly connected to the other ends of the right-side distribution cavity and the left-side distribution cavity away from the outer housing, and two negative pressure fans are installed on the fixing plate frames.

[0013] Furthermore, the right-side distribution cavity, the left-side distribution cavity, and the conducting flat tubes are interconnected, and there is a certain distance between the outer housing and the conducting flat tubes.

[0014] Furthermore, the front and rear ends of the conducting flat tubes and the metal fins are flush, and the metal fins are arranged at equal intervals.

[0015] Compared with the existing technology, the present invention has the following beneficial effects:

[0016] (1). The present invention is provided with a first limiting clip, a second limiting clip, a high-temperature resistant rubber block, an oil passage groove, a rubber support rod, and a handle. During use, the outer casing and the inner casing wrap the iron core winding. With the large-scale access of new energy and direct current, impacts such as new energy transient low-voltage ride-through and DC commutation failure trigger grid transient low frequency. Under severe current impacts, the convex part of the inner casing is blocked by the high-temperature resistant rubber block between the first limiting clip and the second limiting clip, preventing it from directly contacting the outer casing and avoiding damage to the casing and oil leakage caused by high-speed extrusion, improving the overall dynamic stability of the device. The oil passage groove facilitates the passage of insulating oil. The rubber support rod of the device plays a supporting role, and the handle facilitates lifting the high-temperature resistant rubber block from between the first limiting clip and the second limiting clip for replacement. Compared with fixed insulation supports, the support structure combining the rubber block and the support rod has higher strength, and the larger support area also brings better support effects. The later replacement difficulty is small, realizing the function of the module insulation support against short-term transient impacts.

[0017] (2). The present invention is provided with an outer casing and an inner casing. During use, a set of inner casings is added between the iron core winding and the outer casing. When the outer casing is concave, the inner casing can protect the internal iron core winding, preventing the concave part from directly pressing the iron core winding, realizing the function of enhancing safety both inside and outside.

[0018] (3). The present invention is provided with a right distribution cavity, a left distribution cavity, a conduction flat tube, metal fins, an oil inlet, an oil outlet, an oil return port, an oil pump, a first connecting pipe, a fixed plate frame, a negative pressure fan, a second connecting pipe, and an oil extraction port. During use, the iron core winding rapidly heats up during operation, and the temperature is dissipated outward through insulating oil. The oil pump sucks through the first connecting pipe, and the oil in the outer casing enters the left distribution cavity along the oil extraction port, the second connecting pipe, and the oil inlet. As the oil enters the right distribution cavity through the conduction flat tube, the negative pressure fan on the fixed plate frame drives the air flow to pass through the metal fins at high speed, rapidly cooling the oil. The cooled oil returns to the inside of the outer casing along the oil outlet, the first connecting pipe, the oil pump, and the oil return port, forming two cycles inside the outer casing, realizing the function of improving the heat dissipation efficiency. Brief Description of the Drawings

[0019] Figure 1 It is a front view structural schematic diagram of the transformer of the present invention.

[0020] Figure 2 It is a sectional structural schematic diagram of the transformer of the present invention.

[0021] Figure 3 It is a side view enlarged structural schematic diagram of the high-temperature resistant rubber block of the present invention.

[0022] Figure 4 It is a front view structural schematic diagram of the conduction flat tube of the present invention.

[0023] In the figure: 1, outer housing; 2, bottom carrier; 3, iron core winding; 4, inner housing; 5, first limit clip; 6, second limit clip; 7, high-temperature resistant rubber block; 8, oil passage groove; 9, rubber support rod; 10, handle; 11, right distribution cavity; 12, left distribution cavity; 13, conduction flat tube; 14, metal fin; 15, oil inlet; 16, oil outlet; 17, oil return port; 18, oil pump; 19, first connecting pipe; 20, fixing plate frame; 21, negative pressure fan; 22, second connecting pipe; 23, oil extraction port; 24, top fixing frame; 25, insulator; 26, lifting lug. Specific implementation mode

[0024] As Figures 1-3 shown, the present invention provides a technical solution: an anti-short-time transient impact transformer with a modular insulation support structure, including an outer housing 1, an inner housing 4, a modular insulation support assembly and a heat dissipation assembly; an inner housing 4 is arranged inside the outer housing 1, and several modular insulation support assemblies for anti-short-time transient impact are arranged between the outer housing 1 and the inner housing 4; multiple groups of iron core windings 3 are arranged inside the inner housing 4.

[0025] The modular insulation support assembly includes a first limit clip 5, a second limit clip 6, a high-temperature resistant rubber block 7 and a rubber support rod 9. Multiple groups of first limit clips 5 are arranged on the outer wall of the inner housing 4, and multiple groups of second limit clips 6 are arranged on the inner wall of the outer housing 1. An insertion slot is formed between the first limit clip 5 and the second limit clip 6. The high-temperature resistant rubber block 7 is used to be inserted into the insertion slot from top to bottom, and a rubber support rod 9 is arranged inside the high-temperature resistant rubber block 7.

[0026] Among them, an oil passage groove 8 is arranged inside the high-temperature resistant rubber block 7. Multiple groups of rubber support rods 9 are integrally formed inside the oil passage groove 8 of the high-temperature resistant rubber block 7, and a handle 10 is adhesively connected to the top of the high-temperature resistant rubber block 7.

[0027] Among them, the first limit clip 5 and the second limit clip 6 have the same size, and the positions of multiple groups of first limit clips 5 on the inner housing 4 correspond to the positions of multiple groups of second limit clips 6 on the outer housing 1 one by one.

[0028] Among them, the shape and size of the outside of the high-temperature resistant rubber block 7 are adapted to the shape and size of the insertion slot formed by the first limit clip 5 and the second limit clip 6, and the high-temperature resistant rubber block 7 can slide up and down along the inside of the insertion slot.

[0029] Among them, the outer housing 1 includes a bottom carrier 2, a top fixing frame 24, an insulator 25 and a lifting lug 26. The bottom end of the outer housing 1 is fixedly connected with a bottom carrier 2. The front and rear ends of the top of the outer housing 1 are respectively fixedly connected with a top fixing frame 24. Multiple groups of insulators 25 are arranged in the middle of the top of the top fixing frame 24, and lifting lugs 26 are respectively welded on both sides of the top of the top fixing frame 24.

[0030] Among them, the bottom end of the high-temperature resistant rubber block 7 is in contact with the inner bottom end of the outer casing 1, and the top end of the handle 10 is in contact with the inner top end of the outer casing 1. The high-temperature resistant rubber block 7 and the rubber support rod 9 are elastic; the outer casing 1 and the inner casing 4 wrap the iron core winding 3 inside. With the large-scale access of new energy and direct current, impacts such as new energy transient low-voltage crossing and direct current commutation failure trigger transient low frequency of the power grid. Under severe current impacts, the convex part of the inner casing 4 is blocked by the high-temperature resistant rubber block 7 between the first limiting clip 5 and the second limiting clip 6, preventing it from directly contacting the outer casing 1 and avoiding damage to the outer casing 1 and leakage of oil due to high-speed extrusion, improving the overall dynamic stability of the transformer. The oil passes through the groove 8 to facilitate the insulating oil of the outer casing 1 to pass through. The rubber support rod 9 of the high-temperature resistant rubber block 7 plays a supporting role, and the handle 10 of the high-temperature resistant rubber block 7 facilitates lifting the high-temperature resistant rubber block 7 from the insertion groove between the first limiting clip 5 and the second limiting clip 6 for replacement. Compared with the fixed insulating support, the supporting structure combined with the high-temperature resistant rubber block 7 and the rubber support rod 9 has higher strength, and the larger supporting area also brings better supporting effect, and the later replacement difficulty is small. Between the iron core winding 3 and the outer casing 1, a group of inner casings 4 are added. When the outer casing 1 is concave, the inner casing 4 can protect the internal iron core winding 3 and avoid the concave part directly pressing on the iron core winding 3.

[0031] Among them, the inside of the inner casing 4 is filled with insulating oil, the space between the outer casing 1 and the inner casing 4 is filled with insulating oil, and the vertical center lines of the outer casing 1 and the inner casing 4 coincide, with better double protection safety.

[0032] As Figure 2 and Figure 4 shown, among them, the upper and lower ends of the right side of the outer casing 1 are respectively fixedly connected with a right-side distribution cavity 11, the upper and lower ends of the left side of the outer casing 1 are respectively fixedly connected with a left-side distribution cavity 12, and multiple groups of conduction flat tubes 13 are transversely welded between one side of the right-side distribution cavity 11 and the left-side distribution cavity 12. Multiple groups of metal fins 14 are welded between the multiple groups of conduction flat tubes 13. An oil inlet 15 is arranged on the left side of the left-side distribution cavity 12, an oil outlet 16 is arranged on the right side of the right-side distribution cavity 11, two oil return ports 17 are fixedly connected to the right side of the outer casing 1, the oil return ports 17 are connected to one end of an oil pump 18 through pipes, a first connecting pipe 19 is fixedly connected between the other end of the oil pump 18 and the oil outlet 16, two oil extraction ports 23 are fixedly connected to the left side of the outer casing 1, and a second connecting pipe 22 is fixedly connected between the other end of the oil extraction ports 23 and the oil inlet 15. Fixed plate frames 20 are fixedly connected to the other ends of the right-side distribution cavity 11 and the left-side distribution cavity 12 away from the outer casing 1, and two negative pressure fans 21 are installed on the fixed plate frames 20.

[0033] Among them, the right-side distribution cavity 11, the left-side distribution cavity 12 and the conduction flat tubes 13 are interconnected, and there is a distance between the outer casing 1 and the conduction flat tubes 13.

[0034] Among them, the front and rear ends of the conduction flat tube 13 and the metal fins 14 are flush, and the metal fins 14 are arranged at equal intervals; the iron core winding 3 rapidly heats up during operation, and the temperature is dissipated outward through the insulating oil. The oil pump 18 sucks through the first connecting pipe 19, so that the insulating oil inside the outer shell 1 enters the left distribution cavity 12 along the oil suction port 23, the second connecting pipe 22, and the oil inlet 15. As the insulating oil enters the right distribution cavity 11 through the conduction flat tube 13, the negative pressure fan 21 on the fixed plate frame 20 drives the air flow to pass through the metal fins 14 at high speed, so that the insulating oil is quickly cooled. The cooled insulating oil returns to the inside of the outer shell 1 along the oil outlet 16, the first connecting pipe 19, the oil pump 18, and the oil return port 17, forming two cycles inside the outer shell 1, realizing the function of improving the heat dissipation efficiency.

[0035] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A short-duration transient impact resistant transformer with a modular insulation support structure, comprising an outer shell (1), an inner shell (4), a modular insulation support component and a heat dissipation component, characterized in that: An inner shell (4) is provided on the inner side of the outer shell (1); a plurality of modular insulating support components resistant to short-term transient impacts are provided between the outer shell (1) and the inner shell (4); a plurality of groups of iron core windings (3) are provided inside the inner shell (4); the modular insulating support components include a first limiting clamp (5), a second limiting clamp (6), a high-temperature resistant rubber block (7) and a rubber support rod (9); a plurality of groups of first limiting clamps (5) are provided on the outer wall of the inner shell (4); a plurality of groups of second limiting clamps (6) are provided on the inner wall of the outer shell (1); and an interlaced spacer is formed between the first limiting clamp (5) and the second limiting clamp (6). The high temperature resistant rubber block (7) is used to be inserted into the through slot from top to bottom, a rubber support rod (9) is provided in the high temperature resistant rubber block (7), an oil through slot (8) is provided inside the high temperature resistant rubber block (7), and a plurality of rubber support rods (9) are integrally formed inside the oil through slot (8) of the high temperature resistant rubber block (7): the bottom end of the high temperature resistant rubber block (7) is in contact with the inner bottom end of the outer shell (1); the interior of the inner shell (4) is filled with insulating oil, the space between the outer shell (1) and the inner shell (4) is filled with insulating oil, and the vertical center lines of the outer shell (1) and the inner shell (4) coincide with each other.

2. The short-time transient impact resistant transformer with a modular insulation support structure according to claim 1, characterized in that: A handle (10) is glued to the top of the high temperature resistant rubber block (7).

3. The short-time transient impact resistant transformer with a modular insulation support structure according to claim 2, characterized in that: The first limiting clips (5) and the second limiting clips (6) have the same size, and the positions of the multiple groups of first limiting clips (5) on the inner shell (4) and the multiple groups of second limiting clips (6) on the outer shell (1) correspond one to one.

4. The short-time transient impact resistant transformer with a modular insulation support structure according to claim 3, characterized in that: The shape and size of the exterior of the high temperature resistant rubber block (7) match the shape and size of the through slot formed by the first limiting clamp (5) and the second limiting clamp (6), and the high temperature resistant rubber block (7) slides up and down along the interior of the through slot.

5. The short-time transient impact resistant transformer with a modular insulation support structure according to claim 4, characterized in that: The outer shell (1) comprises a bottom bearing frame (2), a top fixing frame (24), an insulator (25) and a lifting lug (26); the bottom end of the outer shell (1) is fixedly connected to the bottom bearing frame (2); the front and rear ends of the top of the outer shell (1) are respectively fixedly connected to the top fixing frame (24); a plurality of groups of insulators (25) are arranged at the middle part of the top of the top fixing frame (24); and lifting lugs (26) are respectively welded to the two sides of the top of the top fixing frame (24).

6. The short-time transient impact resistant transformer with a modular insulation support structure according to claim 5, characterized in that: The top end of the handle (10) fits into the top end of the inner side of the outer shell (1), and the high temperature resistant rubber block (7) and the rubber support rod (9) are elastic.

7. The short-time transient impact resistant transformer with a modular insulation support structure according to claim 1, characterized in that: The right side of the outer shell (1) is fixedly connected to the right distribution chamber (11) at the upper and lower ends, respectively; the left side of the outer shell (1) is fixedly connected to the left distribution chamber (12) at the upper and lower ends; a plurality of groups of conducting flat tubes (13) are transversely welded between one side of the right distribution chamber (11) and the left distribution chamber (12); a plurality of groups of metal fins (14) are welded between the plurality of groups of conducting flat tubes (13); an oil inlet (15) is provided on the left side of the left distribution chamber (12); an oil outlet (16) is provided on the right side of the right distribution chamber (11); and two groups of oil return ports (14) are fixedly connected on the right side of the outer shell (1). The oil return port (17) is connected to a pipeline at one end of the oil pump (18); a first connecting pipe (19) is fixedly connected between the other end of the oil pump (18) and the oil outlet (16); two groups of oil extraction ports (23) are fixedly connected to the left side of the outer shell (1); a second connecting pipe (22) is fixedly connected between the other end of the oil extraction port (23) and the oil inlet (15); a fixed plate frame (20) is fixedly connected to the other end of the right distribution chamber (11) and the left distribution chamber (12) away from the outer shell (1); and two groups of negative pressure fans (21) are installed on the fixed plate frame (20).

8. The short-time transient impact resistant transformer with a modular insulation support structure according to claim 7, characterized in that: The right distribution chamber (11), the left distribution chamber (12) and the conducting flat tube (13) are in communication with each other, and a distance is left between the outer shell (1) and the conducting flat tube (13).

9. The short-time transient impact resistant transformer with a modular insulation support structure according to claim 8, characterized in that: The front and rear ends of the conductive flat tube (13) and the metal fins (14) are flush, and the metal fins (14) are arranged at equal intervals.

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