Short-time transient impact resistant transformer with module insulation supporting structure

Abstract

The invention discloses a short-time transient impact resistant transformer with a module insulation support structure, which comprises an outer shell, an inner shell is arranged on the inner side of the outer shell, and a plurality of short-time transient impact resistant modular insulation support components are arranged between the outer shell and the inner shell; a plurality of groups of iron core windings are arranged in the inner shell, a plurality of groups of first limiting clamps are arranged on the outer wall of the inner shell, a plurality of groups of second limiting clamps are arranged on the inner wall of the outer shell, inserting grooves are formed between the first limiting clamps and the second limiting clamps, the high-temperature-resistant rubber blocks are used for being inserted into the inserting grooves from top to bottom, and rubber supporting rods are arranged in the high-temperature-resistant rubber blocks. According to the module insulation supporting transformer, the first limiting clamp, the second limiting clamp and the high-temperature-resistant rubber block are arranged, under violent current impact, the outwards-protruding part of the inner shell is blocked by the high-temperature-resistant rubber block between the first limiting clamp and the second limiting clamp, and the function of resisting short-time transient impact of the module insulation supporting transformer is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of transformers, and in particular to a short-time transient impact resistant transformer with a module insulation support structure. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the shell and the internal iron core winding. In electrical equipment and wireless circuits, it is often used to increase or decrease voltage, match impedance, and provide safety isolation.

[0003] Currently, the common transformers on the market are mostly similar in overall structure. The outer shell covers the iron core winding and is filled with insulating oil. There are some functional deficiencies in actual use and there is room for improvement. Only insulating oil is filled between the outer shell and the iron core winding. When the transformer encounters an external short-term transient impact, once the shell is deformed inward or outward, the outer shell is prone to damage and leakage, causing a short circuit and fire, which is very dangerous. It does not have the function of modular insulation support to resist short-term transient impact. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a short-time transient impact resistant transformer with a modular insulation support structure to solve the problem of the lack of modular insulation support for short-time transient impact resistance mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a short-time transient impact resistant transformer with a modular insulation support structure, comprising an outer shell, an inner shell, a modular insulation support assembly and a heat dissipation assembly, wherein an inner shell is provided on the inner side of the outer shell, and a plurality of modular insulation support resistant components for short-time transient impact are provided between the outer shell and the inner shell; a plurality of groups of core windings are provided inside the inner shell; the modular insulation support assembly comprises a first limit clamp, a second limit clamp, a high-temperature resistant rubber block and a rubber support rod, a plurality of groups of first limit clamps are provided on the outer wall of the inner shell, a plurality of groups of second limit clamps are provided on the inner wall of the outer shell, a through slot is formed between the first limit clamp and the second limit clamp, the high-temperature resistant rubber block is used to be inserted into the through slot from top to bottom, and a rubber support rod is provided in the high-temperature resistant rubber block.

[0006] Furthermore, an oil passage groove is provided inside the high temperature resistant rubber block, a plurality of rubber support rods are integrally formed inside the oil passage groove of the high temperature resistant rubber block, and a handle is glued to the top of the high temperature resistant rubber block.

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

[0008] Furthermore, the shape and size of the exterior of the high temperature resistant rubber block match the shape and size of the through 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 interior of the through slot.

[0009] Furthermore, the outer shell includes a bottom supporting frame, a top fixing frame, an insulator and a lifting ear. The bottom end of the outer shell is fixedly connected to the bottom supporting frame, the front and rear ends of the top of the outer shell are respectively fixedly connected to the top fixing frame, a plurality of groups of insulators are arranged in the middle part of the top of the top fixing frame, and lifting ears are respectively welded on both sides of the top of the top fixing frame.

[0010] Furthermore, the bottom end of the high temperature resistant rubber block fits with the inner bottom end of the outer shell, the top end of the handle fits with the inner top end of the outer shell, and the high temperature resistant rubber block and the rubber support rod are elastic.

[0011] Furthermore, the interior of the inner shell is filled with insulating oil, the space between the outer shell and the inner shell is filled with insulating oil, and the vertical center lines of the outer shell and the inner shell coincide with each other.

[0012] Furthermore, the upper and lower ends of the right side of the outer shell are respectively fixedly connected with the right distribution chamber, and the upper and lower ends of the left side of the outer shell are respectively fixedly connected with the left distribution chamber, a plurality of groups of conducting flat tubes are horizontally welded between the right distribution chamber and one side of the left distribution chamber, and a plurality of groups of metal fins are welded between the plurality of conducting flat tubes, an oil inlet is arranged on the left side of the left distribution chamber, and an oil outlet is arranged on the right side of the right distribution chamber, two groups of oil return ports are fixedly connected to the right side of the outer shell, the oil return port is connected to the pipeline at one end of the oil pump, a first connecting pipe is fixedly connected between the other end of the oil pump and the oil outlet, two groups of oil extraction ports are fixedly connected to the left side of the outer shell, a second connecting pipe is fixedly connected between the other end of the oil extraction port and the oil inlet, a fixed plate frame is fixedly connected to the right distribution chamber and the left distribution chamber away from the other end of the outer shell, and two groups of negative pressure fans are installed on the fixed plate frame.

[0013] Furthermore, the right distribution chamber, the left distribution chamber and the conducting flat tube are communicated with each other, and a distance is left between the outer shell and the conducting flat tube.

[0014] Furthermore, the front and rear ends of the conductive flat tube 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: (1) The present invention is provided with a first limit clamp, a second limit clamp, a high temperature resistant rubber block, an oil passage groove, a rubber support rod and a handle. When in use, the outer shell and the inner shell cover the core winding. With the large-scale access of new energy and direct current, the transient low voltage ride-through of new energy, the failure of direct current commutation and other impacts cause transient low frequency of the power grid. Under severe current impact, the outer convex part of the inner shell is blocked by the high temperature resistant rubber block between the first limit clamp and the second limit clamp to prevent it from directly contacting the outer shell, avoiding high-speed extrusion causing shell damage and oil leakage, thereby improving the overall dynamic stability of the equipment. The oil passage groove facilitates the passage of insulating oil, and the rubber support rod of the device plays a supporting role. The handle facilitates the high temperature resistant rubber block to be lifted from between the first limit clamp and the second limit clamp for replacement. Compared with the fixed insulating support, the support structure combined with the rubber block and the support rod has higher strength, and the larger support area also brings better support effect. The difficulty of later replacement is small, and the function of the module insulating support to resist short-term transient impact is realized.

[0016] (2) The present invention is provided with an outer shell and an inner shell. When in use, an inner shell is added between the core winding and the outer shell. When the outer shell is concave, the inner shell can protect the internal core winding and prevent the concave part from directly pressing the core winding, thereby realizing the function of improving safety by the inner and outer double layers.

[0017] (3) The present invention is provided with a right distribution chamber, a left distribution chamber, a conductive 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. When in use, the core winding heats up rapidly during operation, and the temperature is dissipated outward through the insulating oil. The oil pump sucks through the first connecting pipe, and the oil inside the outer shell enters the left distribution chamber along the oil extraction port, the second connecting pipe and the oil inlet. As the oil enters the right distribution chamber through the conductive flat tube, the negative pressure fan on the fixed plate frame drives the air flow to pass through the metal fins at high speed, so that the oil cools down rapidly. The cooled oil returns to the inside of the outer shell along the oil outlet, the first connecting pipe, the oil pump and the oil return port, forming two circulations inside the outer shell, thereby achieving the function of improving the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the front view structure of the transformer of the present invention.

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the transformer of the present invention.

[0020] Figure 3 It is a schematic diagram of the enlarged side view of the high temperature resistant rubber block of the present invention.

[0021] Figure 4 It is a schematic diagram of the front view structure of the conductive flat tube of the present invention.

[0022] In the figure: 1. outer shell; 2. bottom bearing frame; 3. core winding; 4. inner shell; 5. first limit clamp; 6. second limit clamp; 7. high temperature resistant rubber block; 8. oil through groove; 9. rubber support rod; 10. handle; 11. right distribution chamber; 12. left distribution chamber; 13. conductive 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 ear. DETAILED DESCRIPTION

[0023] like Figure 1-Figure 3 As shown, the present invention provides a technical solution: a short-time transient impact resistant transformer with a modular insulation support structure, comprising an outer shell 1, an inner shell 4, a modular insulation support assembly and a heat dissipation assembly; an inner shell 4 is provided on the inner side of the outer shell 1, and a plurality of modular insulation support assemblies resistant to short-time transient impacts are provided between the outer shell 1 and the inner shell 4; a plurality of iron core windings 3 are provided inside the inner shell 4; The modular insulating support assembly includes 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 first limiting clamps 5 are provided on the outer wall of the inner shell 4, and a plurality of second limiting clamps 6 are provided on the inner wall of the outer shell 1. A through slot 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, and a rubber support rod 9 is provided inside the high temperature resistant rubber block 7.

[0024] Among them, an oil passing groove 8 is arranged inside the high temperature resistant rubber block 7, and multiple groups of rubber support rods 9 are integrally formed inside the oil passing groove 8 of the high temperature resistant rubber block 7, and a handle 10 is glued on the top of the high temperature resistant rubber block 7.

[0025] 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.

[0026] 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 clip 5 and the second limiting clip 6 , and the high temperature resistant rubber block 7 can slide up and down along the interior of the through slot.

[0027] Among them, the outer shell 1 includes a bottom supporting frame 2, a top fixing frame 24, an insulator 25 and a lifting ear 26. The bottom end of the outer shell 1 is fixedly connected to the bottom supporting frame 2, and 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 in the middle part of the top of the top fixing frame 24, and the lifting ears 26 are respectively welded on both sides of the top of the top fixing frame 24.

[0028] Among them, 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 top end of the handle 10 is in contact with the inner top end of the outer shell 1, and the high temperature resistant rubber block 7 and the rubber support rod 9 are elastic; the outer shell 1 and the inner shell 4 cover the core winding 3 inside. With the large-scale access of new energy and DC, the transient low voltage ride-through of new energy, the DC commutation failure and other impacts cause transient low frequency of the power grid. Under the severe current impact, the convex part of the inner shell 4 is blocked by the high temperature resistant rubber block 7 between the first limit clip 5 and the second limit clip 6 to prevent it from directly contacting the outer shell 1. Avoid high-speed extrusion causing damage to the outer shell 1 and leakage of oil, and improve the overall dynamic stability of the transformer. The oil passage groove 8 facilitates the passage of insulating oil in the outer shell 1. The rubber support rod 9 of the high-temperature resistant rubber block 7 plays a supporting role. The handle 10 of the high-temperature resistant rubber block 7 facilitates the high-temperature resistant rubber block 7 to be lifted from the through slot between the first limit clamp 5 and the second limit clamp 6 for replacement. Compared with the fixed insulation support, the support structure strength of the high-temperature resistant rubber block 7 and the rubber support rod 9 is higher, and the larger support area also brings better support effect, and the difficulty of later replacement is small. Between the core winding 3 and the outer shell 1, a set of inner shells 4 is added. When the outer shell 1 is concave, the inner shell 4 can protect the internal core winding 3 and avoid the concave part directly pressing the core winding 3.

[0029] Among them, 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, so the double protection has better safety.

[0030] like Figure 2 and Figure 4 As shown, the right side distribution chamber 11 is fixedly connected to the upper and lower ends of the right side of the outer shell 1, and the left side distribution chamber 12 is fixedly connected to the upper and lower ends of the left side of the outer shell 1. A plurality of groups of conducting flat tubes 13 are horizontally welded between one side of the right distribution chamber 11 and the left distribution chamber 12, and 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 arranged on the left side of the left distribution chamber 12, and an oil outlet 16 is arranged on the right side of the right distribution chamber 11. Two groups of oil return ports 17 are fixedly connected to the right side of the outer shell 1. The oil return port 17 is connected to a pipeline at one end of an oil pump 18, and 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, and 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.

[0031] The right distribution chamber 11 , the left distribution chamber 12 and the conducting flat tube 13 are connected, and a distance is left between the outer shell 1 and the conducting flat tube 13 .

[0032] Among them, 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; the core winding 3 heats up rapidly during operation, and the temperature radiates 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 chamber 12 along the oil extraction port 23, the second connecting pipe 22, and the oil inlet 15. As the insulating oil enters the right distribution chamber 11 through the conductive flat tube 13, the negative pressure fan 21 on the fixed plate frame 20 drives the air flow 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 circulations inside the outer shell 1, thereby realizing the function of improving the heat dissipation efficiency.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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 core windings (3) are provided inside the inner shell (4); the modular insulating support components comprise 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); a through slot 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; and a rubber support rod (9) is provided inside the high-temperature resistant rubber block (7).

2. The short-time transient impact resistant transformer with a modular insulation support structure according to claim 1, characterized in that: An oil passage groove (8) is provided inside the high temperature resistant rubber block (7), a plurality of 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 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 bottom end of the high temperature resistant rubber block (7) fits with the bottom end of the inner side of the outer shell (1), the top end of the handle (10) fits with 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 6, characterized in that: 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.

8. The short-time transient impact resistant transformer with a modular insulation support structure according to claim 7, 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).

9. The short-time transient impact resistant transformer with a modular insulation support structure according to claim 8, 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).

10. The short-time transient impact resistant transformer with a modular insulation support structure according to claim 9, 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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