Transformer lightning arrester convenient to assemble

Abstract

The invention discloses a transformer lightning arrester convenient to assemble, and relates to the technical field of lightning protection. The assembling problem is solved. The mounting base and the tip electrode assembly are located at the two ends, the mounting joints are arranged between the mounting base and the tip electrode assembly, and each mounting joint comprises a porcelain cylinder, an insulating cylinder fixed to the inner side wall of the porcelain cylinder and a conductive column fixed to the inner side wall of the insulating cylinder. The two sides of the porcelain cylinder are respectively provided with an internal thread ring and an external thread boss which are matched with each other. The main body part is arranged to be the combination of the mounting seat, the tip electrode assembly and the multiple groups of mounting sections, on one hand, the number of the mounting sections can be selected according to the required height, on the other hand, the multiple groups of mounting sections are matched with the external thread bosses through the internal thread rings, and the conductive columns are matched and conducted with the matching tables through the elastic electrode plates; therefore, a circuit can be conducted after mechanical installation, assembly is facilitated, the size of parts is smaller, and machining and transportation are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of lightning protection, and in particular to a transformer lightning protection device which is easy to assemble. Background Art

[0002] Lightning contains a lot of electrical energy. When the voltage reaches the critical point of breaking through the air, it will release high-voltage and high-current electrical energy to the outside. If this electrical energy flows through the transformer, it will directly damage the transformer. Therefore, it is necessary to install a lightning protection device on the transformer to prevent lightning strikes.

[0003] After searching, the Chinese patent publication number CN117637263A discloses a fully insulated built-in lightning arrester structure for a transformer, including a lightning arrester body and a protective mechanism, the lightning arrester body including a porcelain bushing, the top of the porcelain bushing is fixedly connected with a positioning screw, the outer wall of the porcelain bushing is evenly fixedly connected with an outer edge along the axial direction, the outer wall of the porcelain bushing is rotatably connected with a rotating porcelain tube, the outer wall of the rotating porcelain tube is fixedly connected to the wiring terminal, an adjustment component is provided inside the porcelain bushing, the adjustment component includes a rotating column, the outer wall of the rotating column is rotatably connected with a rotating cylinder, the outer wall of the rotating cylinder is provided with an adjustment groove, the inner wall of the adjustment groove is slidably connected with a first connecting column, and one end of the first connecting column is fixedly connected to the outer wall of the rotating column.

[0004] The above patent has the following deficiencies: the entire lightning protection device is a whole, and when the height of the lightning protection device is large, it is not convenient for production and transportation, and it is not convenient for on-site assembly.

[0005] To this end, the present invention provides a transformer lightning protection device that is easy to assemble. Summary of the Invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to provide a transformer lightning protection device that is easy to assemble.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A transformer lightning protection device that is easy to assemble includes a mounting base and a tip electrode assembly at both ends and multiple groups of mounting nodes arranged between the mounting base and the tip electrode assembly.

[0009] The mounting section includes a porcelain cylinder, an insulating cylinder fixed to the inner side wall of the porcelain cylinder, and a conductive column fixed to the inner side wall of the insulating cylinder. The two sides of the porcelain cylinder are respectively provided with an internal thread ring and an external thread boss that match each other. The two sides of the conductive column are respectively provided with elastic electrode sheets and matching platforms that match each other. The inner walls of the porcelain cylinder and the insulating cylinder are fixedly clamped with a wiring terminal that is electrically connected to the conductive column, and the wiring terminal is grounded through a wire.

[0010] The top of the mounting seat is provided with an internal thread boss that cooperates with the external thread boss;

[0011] The tip electrode assembly includes a threaded platform matched with the internal thread ring and a tip conductive column fixed to the inner wall of the threaded platform. The bottom of the tip conductive column is provided with a matching block matched with the elastic electrode sheet.

[0012] Preferably, an outer edge is provided on the outer side of the porcelain cylinder.

[0013] Furthermore, an electrode sheet is slidably fitted inside the conductive column, a conductive spring 1 is buckled on the bottom of the electrode sheet, the other end of the conductive spring 1 is buckled on the inner wall of the conductive column, and the electrode sheet is in contact with the matching platform.

[0014] On the basis of the above solution: the four corners of the mounting seat are all connected with external threaded barrels through threads.

[0015] A better solution among the above solutions is that the outer walls of the externally threaded barrel on both sides of the mounting seat are respectively connected with a positioning nut 1 and a positioning nut 2 through threads.

[0016] As a further solution of the present invention: a bushing 1 is provided on the inner wall of the externally threaded barrel.

[0017] At the same time, the terminal includes a conductive tube and a slip ring slidably connected to the inner side of the conductive tube. The side wall of the slip ring is buckled with a conductive spring 2, and the other end of the conductive spring 2 is buckled with the inner wall of the conductive tube. A plurality of elastic bevel claws are fixed on the other side of the slip ring, and the bevel claws are matched with the inner wall of the conductive tube through the bevel.

[0018] As a preferred embodiment of the present invention, a protrusion is fixed on the outer wall of the bevel claw, and an anti-slip groove is provided on the inner wall of the bevel claw.

[0019] At the same time, a wire clamp assembly is provided on the side wall of the mounting seat, and the wire clamp assembly includes a wire clamp 1 fixed to the side wall of the mounting seat and a wire clamp 2 fixed to the wire clamp 1 through a lock. The inner walls of the wire clamp 1 and the wire clamp 2 are provided with multiple semicircular wire threading holes, and the inner walls of the semicircular wire threading holes are provided with a bushing 2.

[0020] As a better solution of the present invention: the lock includes an insertion rod, a knob fixed to the end of the insertion rod and a limiting column fixed to the side wall of the other end of the insertion rod, the inner walls of the wire clamp 1 and the wire clamp 2 are both provided with through holes for the limiting column and the insertion rod to pass through, and the inner wall of the wire clamp 1 is provided with a limiting groove that cooperates with the limiting column.

[0021] The beneficial effects of the present invention are:

[0022] 1. The present invention, by configuring the main body as a combination of a mounting base, a tip electrode assembly, and multiple groups of mounting sections, can, on the one hand, select the number of mounting sections according to the required height; on the other hand, the multiple groups of mounting sections are matched with the internal thread ring and the external thread boss, and the conductive column is connected with the matching platform through the elastic electrode sheet, so that the circuit can be connected after mechanical installation, which is convenient for assembly. At the same time, the volume of the parts is smaller, which is convenient for processing and transportation.

[0023] 2. The present invention, on the one hand, utilizes the elastic electrode sheet and the matching platform to achieve conduction between adjacent conductive columns, and on the other hand, utilizes the contact between the electrode sheet and the matching platform to increase the contact area, thereby reducing the contact resistance, preventing the generation of excessive Joule heat when the cumulative current passes through, and increasing safety.

[0024] 3. The present invention provides an externally threaded barrel that can be rotated to change the fixing height, so that it can be reliably fixed when the fixing point is not flat, thereby increasing the stability of the fixation. In addition, the positioning nut 1 and the positioning nut 2 can lock the externally threaded barrel to increase reliability. The bushing 1 can have an insulating effect on the one hand, and can also provide a certain degree of shock absorption on the other hand.

[0025] 4. The present invention provides a terminal block, and electrical conduction between the wire and the conductive column can be achieved by simply pulling the protrusion, thereby eliminating the need for other installation tools and further increasing the convenience of assembly.

[0026] 5. The present invention, by providing a wire clamp assembly, can arrange the wires, prevent the insulation skin from being worn due to guide shaking, and increase safety. The installation of the wire clamp assembly is achieved by relying on a "locking" structure, thereby avoiding the use of other tools and further increasing the convenience of assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of a transformer lightning protection device that is easy to assemble proposed by the present invention;

[0028] Figure 2 This is a schematic diagram of the installation section structure of a transformer lightning protection device that is easy to assemble proposed by the present invention;

[0029] Figure 3 This is a schematic cross-sectional view of the conductive column of a transformer lightning protection device that is easy to assemble, as proposed by the present invention;

[0030] Figure 4 This is a schematic diagram of the structure of a mounting base for a transformer lightning protection device that is easy to assemble, as proposed by the present invention;

[0031] Figure 5 This is a schematic structural diagram of a tip electrode assembly of a transformer lightning protection device that is easy to assemble, as proposed by the present invention;

[0032] Figure 6 This is a schematic structural diagram of a wire clamp assembly for a transformer lightning protection device that is easy to assemble, as proposed by the present invention;

[0033] Figure 7 A schematic diagram of a locking structure of a transformer lightning protection device that is easy to assemble, as proposed by the present invention;

[0034] Figure 8 This is a schematic diagram of the wiring terminal structure of a transformer lightning protection device that is easy to assemble, as proposed by the present invention.

[0035] In the figure: 1. Mounting seat; 2. Mounting section; 3. Tip electrode assembly; 4. Wire clamp assembly; 5. Ceramic cylinder; 6. Insulating cylinder; 7. Internal thread ring; 8. Elastic electrode sheet; 9. Conductive column; 10. Matching platform; 11. External thread boss; 12. Terminal; 13. Outer edge; 14. Electrode sheet; 15. Conductive spring 1; 16. Internal thread boss; 17. Positioning nut 1; 18. Positioning nut 2; 19. External thread Threaded cylinder; 20. Bushing 1; 21. Tip conductive column; 22. Threaded platform; 23. Matching block; 24. Wire clamp 1; 25. Wire clamp 2; 26. Lock buckle; 27. Bushing 2; 28. Through hole; 29. Limiting groove; 30. Limiting column; 31. Insert rod; 32. Knob; 33. Conductive cylinder; 34. Conductive spring 2; 35. Inclined surface; 36. Inclined surface claw; 37. Anti-slip groove; 38. Bump; 39. Slip ring. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be further described in detail below in conjunction with specific implementation methods.

[0037] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0038] Example 1:

[0039] A transformer lightning protection device that is easy to assemble, such as Figures 1-8 As shown, it includes a mounting base 1 and a tip electrode assembly 3 located at both ends and a plurality of mounting nodes 2 arranged between the mounting base 1 and the tip electrode assembly 3.

[0040] The mounting section 2 includes a porcelain tube 5, an insulating tube 6 fixed to the inner wall of the porcelain tube 5, and a conductive column 9 fixed to the inner wall of the insulating tube 6. The two sides of the porcelain tube 5 are respectively provided with an internal thread ring 7 and an external thread boss 11 that cooperate with each other, and the two sides of the conductive column 9 are respectively provided with an elastic electrode sheet 8 and a matching platform 10 that cooperate with each other. The inner walls of the porcelain tube 5 and the insulating tube 6 are fixedly clamped with a wiring terminal 12 that is electrically conductive to the conductive column 9, and the wiring terminal 12 is grounded through a wire.

[0041] The top of the mounting seat 1 is provided with an internal thread boss 16 that cooperates with the external thread boss 11 .

[0042] The tip electrode assembly 3 includes a threaded platform 22 that cooperates with the internal thread ring 7 and a tip conductive column 21 fixed to the inner wall of the threaded platform 22. The bottom of the tip conductive column 21 is provided with a matching block 23 that cooperates with the elastic electrode sheet 8.

[0043] An outer edge 13 is provided on the outer side of the porcelain cylinder 5 .

[0044] This device, by setting the main body as a combination of a mounting seat 1, a tip electrode assembly 3 and multiple groups of mounting sections 2, can, on the one hand, select the number of mounting sections 2 according to the required height, and on the other hand, the multiple groups of mounting sections 2 are matched through the internal thread ring 7 and the external thread boss 11, and the conductive column 9 is connected with the matching platform 10 through the elastic electrode sheet 8, so that the circuit can be connected after mechanical installation, which is convenient for assembly. At the same time, the volume of the parts is smaller, which is convenient for processing and transportation.

[0045] In order to solve the contact area problem; Figure 3 As shown, the conductive column 9 is internally slidably fitted with an electrode sheet 14 , the bottom of the electrode sheet 14 is buckled with a conductive spring 15 , the other end of the conductive spring 15 is buckled to the inner wall of the conductive column 9 , and the electrode sheet 14 is in contact with the matching platform 10 .

[0046] This device, on the one hand, utilizes the elastic electrode sheet 8 and the matching platform 10 to achieve conduction between adjacent conductive pillars 9, and on the other hand utilizes the contact between the electrode sheet 14 and the matching platform 10 to increase the contact area, thereby reducing the contact resistance, preventing the generation of excessive Joule heat when the cumulative current passes through, and increasing safety.

[0047] To solve installation problems; such as Figure 4 As shown, the four corners of the mounting seat 1 are all connected with external threaded barrels 19 through threads.

[0048] The outer walls of the external threaded barrel 19 on both sides of the mounting base 1 are respectively connected with a positioning nut 17 and a positioning nut 2 18 through threads.

[0049] The inner wall of the external threaded barrel 19 is provided with a bushing 20 .

[0050] The mounting base 1 can be fixed to the transformer or bracket by passing a bolt through the bushing 1 20 , and the height of the fixing point can be adjusted by rotating the external threaded barrel 19 , and the position can be locked by the positioning nut 1 17 and the positioning nut 2 18 .

[0051] This device is provided with an external threaded cylinder 19, which can be rotated to change the fixing height, so that it can be reliably fixed when the fixing point is not flat, thereby increasing the stability of the fixation. In addition, the positioning nut 17 and the positioning nut 2 18 can lock the external threaded cylinder 19 to increase reliability. The bushing 20 can have an insulating effect on the one hand, and can also provide a certain degree of shock absorption on the other hand.

[0052] To solve wiring problems; such as Figure 8 As shown, the terminal 12 includes a conductive tube 33 and a slip ring 39 slidably connected to the inner side of the conductive tube 33. The side wall of the slip ring 39 is buckled with a conductive spring 2 34. The other end of the conductive spring 2 34 is buckled with the inner side wall of the conductive tube 33. A plurality of elastic bevel claws 36 are fixed to the other side of the slip ring 39. The bevel claws 36 cooperate with the inner wall of the conductive tube 33 through the bevel 35.

[0053] A protrusion 38 is fixed on the outer wall of the bevel claw 36 , and an anti-slip groove 37 is formed on the inner wall of the bevel claw 36 .

[0054] When installing the conductor, the bevel claw 36 and the slip ring 39 can be pulled outward by the protrusion 38. The bevel claw 36 opens due to its own elastic force, and the core of the conductor is inserted between the bevel claws 36. Then the protrusion 38 is released, and the conductive spring 2 34 pulls the slip ring 39 and the bevel claw 36 into the conductive tube 33, and the bevel claw 36 is contracted through the bevel 35 to hold the conductor tightly and fix it.

[0055] This device, by providing the connection terminal 12, can realize electrical conduction between the wire and the conductive column 9 by simply pulling the protrusion 38, thereby eliminating the need for other installation tools, further increasing the convenience of assembly.

[0056] When using this embodiment, first use bolts to fix the mounting base 1 to the transformer or bracket, then determine the number of mounting sections 2 to be used based on the required height of the tip electrode assembly 3 and the height of each mounting section 2, and then rotate and fix the porcelain tubes 5 one by one. Then, the bevel claws 36 and the slip ring 39 can be pulled outwards through the protrusion 38. The bevel claws 36 are opened by their own elastic force, and the wire core of the wire is inserted between the bevel claws 36. Then, the protrusion 38 is released, and the conductive spring 2 34 pulls the slip ring 39 and the bevel claws 36 into the conductive tube 33, and the bevel claws 36 are contracted through the bevel 35 to hold the wire tightly and fix it, and then the other end of the wire is grounded.

[0057] Example 2:

[0058] A transformer lightning protection device that is easy to assemble, such as Figure 1 、 6 As shown in Figure 7, in order to solve the safety problem, this embodiment makes the following improvements on the basis of embodiment 1: the side wall of the mounting seat 1 is provided with a wire clamp assembly 4, and the wire clamp assembly 4 includes a wire clamp 1 24 fixed to the side wall of the mounting seat 1 and a wire clamp 25 fixed to the wire clamp 1 24 by a lock buckle 26, and the inner walls of the wire clamp 1 24 and the wire clamp 2 25 are provided with a plurality of semicircular threading holes, and the inner walls of the semicircular threading holes are provided with a bushing 27.

[0059] The lock buckle 26 includes an insertion rod 31, a knob 32 fixed to the end of the insertion rod 31, and a limiting column 30 fixed to the side wall of the other end of the insertion rod 31. The inner walls of the wire clamp 1 24 and the wire clamp 2 25 are both provided with a through hole 28 for the limiting column 30 and the insertion rod 31 to pass through, and the inner wall of the wire clamp 1 24 is provided with a limiting groove 29 that cooperates with the limiting column 30 to limit the position.

[0060] When using this embodiment, the wire can be passed through the bushing 27, and then the limiting column 30 and the insertion rod 31 are inserted into the through hole 28 along a fixed direction, and the knob 32 is rotated to achieve locking by utilizing the cooperation between the limiting groove 29 and the limiting column 30.

[0061] This device, by providing a wire clamp assembly 4, can arrange the wires, prevent the insulation skin from being worn due to guide shaking, and increase safety. The installation of the wire clamp assembly 4 is achieved by relying on a "lock" structure, thereby avoiding the use of other tools and further increasing the convenience of assembly.

[0062] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A transformer lightning protection device that is easy to assemble, comprising a mounting base (1) and a tip electrode assembly (3) located at both ends, and a plurality of mounting joints (2) arranged between the mounting base (1) and the tip electrode assembly (3), characterized in that: The mounting section (2) comprises a porcelain cylinder (5), an insulating cylinder (6) fixed to the inner wall of the porcelain cylinder (5), and a conductive column (9) fixed to the inner wall of the insulating cylinder (6); the porcelain cylinder (5) is provided with internal thread rings (7) and external thread bosses (11) that match each other on both sides; the conductive column (9) is provided with elastic electrode sheets (8) and matching platforms (10) that match each other on both sides; the porcelain cylinder (5) and the insulating cylinder (6) are fixedly connected with wiring terminals (12) that are electrically conductive to the conductive column (9); and the wiring terminals (12) are grounded through wires; The top of the mounting seat (1) is provided with an internal thread boss (16) that cooperates with the external thread boss (11); The tip electrode assembly (3) comprises a threaded platform (22) matched with an internal threaded ring (7) and a tip conductive column (21) fixed to the inner wall of the threaded platform (22); a matching block (23) matched with an elastic electrode sheet (8) is provided at the bottom of the tip conductive column (21).

2. The transformer lightning protection device that is easy to assemble according to claim 1, characterized in that: An outer edge (13) is provided on the outer side of the porcelain cylinder (5).

3. The transformer lightning protection device that is easy to assemble according to claim 1, characterized in that: The conductive column (9) is internally slidably fitted with an electrode sheet (14), the bottom of the electrode sheet (14) is buckled with a conductive spring (15), the other end of the conductive spring (15) is buckled with the inner wall of the conductive column (9), and the electrode sheet (14) is in contact with the matching platform (10).

4. The transformer lightning protection device that is easy to assemble according to claim 1, characterized in that: The four corners of the mounting seat (1) are all connected to external threaded cylinders (19) through threads.

5. The transformer lightning protection device that is easy to assemble according to claim 4, characterized in that: The outer walls of the external threaded barrel (19) on both sides of the mounting seat (1) are respectively connected to a first positioning nut (17) and a second positioning nut (18) through threads.

6. The transformer lightning protection device that is easy to assemble according to claim 4, characterized in that: The inner wall of the external threaded barrel (19) is provided with a bushing 1 (20).

7. The transformer lightning protection device that is easy to assemble according to claim 1, characterized in that: The terminal block (12) comprises a conductive tube (33) and a slip ring (39) slidably connected to the inner side of the conductive tube (33); a conductive spring (34) is buckled on the side wall of the slip ring (39); the other end of the conductive spring (34) is buckled on the inner side wall of the conductive tube (33); a plurality of elastic bevel claws (36) are fixed on the other side of the slip ring (39); the bevel claws (36) are matched with the inner wall of the conductive tube (33) through a bevel (35).

8. The transformer lightning protection device that is easy to assemble according to claim 7, characterized in that: A protrusion (38) is fixed on the outer wall of the bevel claw (36), and an anti-slip groove (37) is provided on the inner wall of the bevel claw (36).

9. The transformer lightning protection device that is easy to assemble according to claim 1, characterized in that: The side wall of the mounting seat (1) is provided with a wire clamp assembly (4), and the wire clamp assembly (4) includes a wire clamp 1 (24) fixed to the side wall of the mounting seat (1) and a wire clamp 2 (25) fixed to the wire clamp 1 (24) through a lock buckle (26), and the inner walls of the wire clamp 1 (24) and the wire clamp 2 (25) are provided with a plurality of semicircular threading holes, and the inner walls of the semicircular threading holes are provided with a bushing 2 (27).

10. The transformer lightning protection device that is easy to assemble according to claim 9, characterized in that: The lock buckle (26) includes an insert rod (31), a knob (32) fixed to the end of the insert rod (31), and a limiting column (30) fixed to the side wall of the other end of the insert rod (31). The inner walls of the wire clamp 1 (24) and the wire clamp 2 (25) are both provided with a through hole (28) for the limiting column (30) and the insert rod (31) to pass through, and the inner wall of the wire clamp 1 (24) is provided with a limiting groove (29) that cooperates with the limiting column (30) to limit the position.

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