Lightning arrester for power transformer

Abstract

The lightning arrester for the power transformer comprises an installation box body and an installation plate, a fixing plate is fixedly installed on the inner wall of the installation box body, a driving motor is fixedly installed on the side face of the fixing plate, and a threaded rod is fixedly installed on the end face of a transmission rod of the driving motor. Connecting blocks are rotatably mounted on the end faces of the threaded rods through bearing sleeves, the bottom end faces of the connecting blocks are fixedly connected with the inner wall of the mounting box body, threaded sleeves are mounted on the side faces of the threaded rods in a threaded mode, connecting rods are fixedly mounted on the side faces of the threaded sleeves, and rolling wheels are rotatably mounted on the side faces of the connecting rods. When the device needs to be disassembled, replaced or transported, the servo motor is started, the mounting block is driven to deflect, the telescopic rod and the lightning arrester assembly are driven to deflect, and the telescopic rod is in contact with the supporting piece, so that the aim of reducing the size is achieved, transportation or disassembly and assembly are facilitated, the convenience of assembly, disassembly and transportation of the device can be improved, and the service life of the device is prolonged. The mounting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lightning protection devices, in particular to a lightning protection device for a power transformer. Background Art

[0002] Lightning arresters are used to protect the insulation of AC power transmission and transformation equipment from lightning overvoltage and operating overvoltage damage. They are suitable for overvoltage protection of transformers, transmission lines, distribution panels, switch cabinets, power meter boxes, vacuum switches, parallel compensation capacitors, rotating motors and semiconductor devices.

[0003] Most existing outdoor transformer lightning arresters are large in size, which makes installation, replacement and transportation inconvenient, reduces installation efficiency, and the height of the lightning arrester cannot be flexibly adjusted during use, which makes the device limited and has few usage scenarios.

[0004] Therefore, it is necessary to provide a lightning protection device for a power transformer. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a lightning protection device for a power transformer.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a lightning protection device for a power transformer, comprising a mounting box and a mounting plate, a fixing plate is fixedly mounted on the inner wall of the mounting box, a driving motor is fixedly mounted on the side of the fixing plate, a threaded rod is fixedly mounted on the end face of a transmission rod of the driving motor, a connecting block is rotatably mounted on the end face of the threaded rod through a bearing sleeve, the bottom end face of the connecting block is fixedly connected to the inner wall of the mounting box, a threaded sleeve is threadedly mounted on the side face of the threaded rod, a connecting rod is fixedly mounted on the side face of the threaded sleeve, and a roller is rotatably mounted on the side face of the connecting rod.

[0007] As a further description of the above technical solution:

[0008] A slide rail is fixedly installed on the inner wall of the installation box, and the inner wall of the slide rail is adapted to the side of the roller. A connecting plate 2 is rotatably installed on the side of the connecting rod, and an upper hinge part 2 is hingedly installed on the other end surface of the connecting plate 2 through a pin.

[0009] As a further description of the above technical solution:

[0010] A lower hinge is fixedly installed on the inner wall of the installation box, a connecting plate 1 is hingedly installed inside the lower hinge, an upper hinge is hingedly installed on the other end face of the connecting plate 1 through a pin, and the side surfaces of the connecting plate 1 and the connecting plate 2 are hingedly connected through a pin.

[0011] As a further description of the above technical solution:

[0012] A sliding block is fixedly mounted on a top end surface of the upper hinge.

[0013] As a further description of the above technical solution:

[0014] A slide groove is fixedly provided on the bottom end surface of the mounting plate, and the inner wall of the slide groove is slidably connected to the side of the slider, a fixing block is fixedly installed on the top surface of the mounting plate, a servo motor is fixedly installed on the side of the fixing block, a mounting block is fixedly installed on the side of the servo motor transmission rod, a conductive component is fixedly installed on the side of the mounting block, and a support is fixedly installed on the top surface of the mounting plate.

[0015] As a further description of the above technical solution:

[0016] A telescopic rod is fixedly mounted on the side surface of the mounting block, a lightning arrester assembly is fixedly mounted on the top surface of the telescopic rod, and the inner wall of the support member and the side surface of the telescopic rod are adapted to each other.

[0017] As a further description of the above technical solution:

[0018] A fixing piece is fixedly installed on the side of the installation box, a protective shell is fixedly installed on the top surface of the installation plate, a heat dissipation hole is fixedly opened on the side of the protective shell, the protective shell is sleeved on the outside of the servo motor, and a buffer pad is fixedly installed on the top surface of the installation box.

[0019] The utility model has the following beneficial effects:

[0020] 1. Compared with the prior art, the lightning protection device for power transformer, when it is necessary to install the device, the device is placed in the installation position, and then the device is fastened and installed in the specified position by fixing bolts and fixings, and can be insulated by rubber pads; when it is necessary to disassemble, replace or transport, the servo motor is turned on to drive the installation block to deflect, drive the telescopic rod and the lightning arrester assembly to deflect, and make the telescopic rod contact with the support member, so as to achieve the purpose of reducing the volume and facilitate transportation or disassembly and installation. Such a setting can improve the convenience of installation, disassembly and transportation of the device, and improve the installation efficiency.

[0021] 2. Compared with the prior art, the lightning protection device for power transformers, when the height of the lightning rod needs to be adjusted, turns on the driving motor to drive the threaded rod to rotate and drive the threaded sleeve to move, thereby driving the connecting rod and the roller to move on the inner wall of the slide rail, thereby driving the connecting plate 2 to deflect, further driving the connecting plate 1 to deflect, driving the upper hinge 1 and the slider to slide on the inner wall of the slide groove, thereby lifting the mounting plate, and further adjusting the extended length of the telescopic rod to adjust the height of the lightning arrester assembly. This arrangement can adjust the height of the lightning arrester assembly of the device, thereby improving the use scenario and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a lightning protection device for a power transformer proposed by the utility model;

[0023] Figure 2 This is a bottom view of the overall structure of a lightning protection device for a power transformer proposed by the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of a servo motor for a lightning protection device for a power transformer proposed by the utility model;

[0025] Figure 4 This is a schematic diagram of the installation box structure of a lightning protection device for a power transformer proposed by the utility model;

[0026] Figure 5 The utility model is a schematic diagram of the structure of a driving motor of a lightning protection device for a power transformer.

[0027] Legend:

[0028] 1. Installation box; 2. Fixing parts; 3. Fixing plate; 4. Driving motor; 5. Threaded rod; 6. Threaded sleeve; 7. Connecting block; 8. Connecting rod; 9. Protective shell; 10. Slide rail; 11. Lower hinge; 12. Connecting plate 1; 13. Upper hinge 1; 14. Sliding block; 15. Connecting plate 2; 16. Upper hinge 2; 17. Roller; 18. Buffer pad; 19. Mounting plate; 20. Slide; 21. Fixing block; 22. Servo motor; 23. Mounting block; 24. Conductive component; 25. Telescopic rod; 26. Lightning arrester component; 27. Support. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Reference Figure 1-Figure 5The utility model provides a lightning protection device for a power transformer, comprising a mounting box 1 and a mounting plate 19, wherein a fixing plate 3 is fixedly mounted on the inner wall of the mounting box 1, a driving motor 4 is fixedly mounted on the side of the fixing plate 3, a threaded rod 5 is fixedly mounted on the end face of a transmission rod of the driving motor 4, a connecting block 7 is rotatably mounted on the end face of the threaded rod 5 through a bearing sleeve, the bottom end face of the connecting block 7 is fixedly connected to the inner wall of the mounting box 1, a threaded sleeve 6 is threadedly mounted on the side face of the threaded sleeve 6, a connecting rod 8 is fixedly mounted on the side face of the threaded sleeve 6, a roller 17 is rotatably mounted on the side face of the connecting rod 8, a slide rail 10 is fixedly mounted on the inner wall of the mounting box 1, the inner wall of the slide rail 10 and the side face of the roller 17 are adapted to each other, and a connecting rod 8 is rotatably mounted on the side face of the connecting rod 8 Connecting plate 2 15, the other end face of connecting plate 2 15 is hingedly installed with upper hinge part 2 16 through a pin. When the height of the lightning rod needs to be adjusted, the driving motor 4 is turned on to drive the threaded rod 5 to rotate and drive the threaded sleeve 6 to move, thereby driving the connecting rod 8 and the roller 17 to move on the inner wall of the slide rail 10, thereby driving the connecting plate 2 15 to deflect, further driving the connecting plate 1 12 to deflect, driving the upper hinge part 13 and the slider 14 to slide on the inner wall of the slide groove 20, thereby lifting the mounting plate 19, and further adjusting the extended length of the telescopic rod 25 to adjust the height of the lightning arrester assembly 26. This arrangement can adjust the height of the lightning arrester assembly 26 of the device, thereby improving the use scenario and practicality of the device.

[0031] A lower hinge 11 is fixedly installed on the inner wall of the installation box 1, a connecting plate 12 is hingedly installed inside the lower hinge 11, an upper hinge 13 is hingedly installed on the other end face of the connecting plate 12 through a pin, the connecting plate 12 and the connecting plate 2 15 are hingedly connected at side faces through a pin, and a slider 14 is fixedly installed on the top face of the upper hinge 13.

[0032] A slide groove 20 is fixedly provided on the bottom end surface of the mounting plate 19, and the inner wall of the slide groove 20 is slidably connected to the side of the slider 14. A fixing block 21 is fixedly installed on the top surface of the mounting plate 19, and a servo motor 22 is fixedly installed on the side of the fixing block 21. A mounting block 23 is fixedly installed on the side of the transmission rod of the servo motor 22, and a conductive component 24 is fixedly installed on the side of the mounting block 23. A support member 27 is fixedly installed on the top surface of the mounting plate 19. When the device needs to be installed, the device is placed in the installation position, and then the device is fastened and installed in the specified position by fixing bolts and fixing members 2, and can be insulated by rubber pads; when it is necessary to disassemble, replace or transport, turn on the servo motor 22, drive the mounting block 23 to deflect, drive the telescopic rod 25 and the lightning arrester assembly 26 to deflect, and make the telescopic rod 25 contact with the support member 27, so as to achieve the purpose of reducing the volume and facilitate transportation or disassembly and installation. Such a setting can improve the convenience of installation, disassembly and transportation of the device and improve installation efficiency.

[0033] A telescopic rod 25 is fixedly installed on the side of the mounting block 23, a lightning arrester assembly 26 is fixedly installed on the top surface of the telescopic rod 25, the inner wall of the support member 27 is adapted to the side of the telescopic rod 25, a fixing member 2 is fixedly installed on the side of the mounting box 1, a protective shell 9 is fixedly installed on the top surface of the mounting plate 19, a heat dissipation hole is fixedly opened on the side of the protective shell 9, the protective shell 9 is sleeved on the outside of the servo motor 22, and a buffer pad 18 is fixedly installed on the top surface of the mounting box 1.

[0034] Working principle: When the device needs to be installed, the device is placed at the installation position, and then the device is fastened and installed at the designated position by the fixing bolts and the fixing member 2, and can be insulated by the rubber pad;

[0035] Further, when the height of the lightning rod needs to be adjusted, the driving motor 4 is turned on to drive the threaded rod 5 to rotate and drive the threaded sleeve 6 to move, thereby driving the connecting rod 8 and the roller 17 to move on the inner wall of the slide rail 10, thereby driving the connecting plate 2 15 to deflect, further driving the connecting plate 1 12 to deflect, driving the upper hinge 13 and the slider 14 to slide on the inner wall of the slide groove 20, thereby lifting the mounting plate 19, and further adjusting the extension length of the telescopic rod 25 to adjust the height of the lightning arrester assembly 26;

[0036] When disassembly, replacement or transportation is required, the servo motor 22 is turned on to drive the mounting block 23 to deflect, drive the telescopic rod 25 and the lightning arrester assembly 26 to deflect, and make the telescopic rod 25 contact with the support member 27, so as to achieve the purpose of reducing the volume and facilitate transportation or disassembly and installation.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lightning protection device for a power transformer, comprising a mounting box (1) and a mounting plate (19), characterized in that: A fixing plate (3) is fixedly mounted on the inner wall of the installation box (1), a driving motor (4) is fixedly mounted on the side of the fixing plate (3), a threaded rod (5) is fixedly mounted on the end face of a transmission rod of the driving motor (4), a connecting block (7) is rotatably mounted on the end face of the threaded rod (5) through a bearing sleeve, a bottom end face of the connecting block (7) is fixedly connected to the inner wall of the installation box (1), a threaded sleeve (6) is threadedly mounted on the side face of the threaded rod (5), a connecting rod (8) is fixedly mounted on the side face of the threaded sleeve (6), and a roller (17) is rotatably mounted on the side face of the connecting rod (8).

2. A lightning protection device for a power transformer according to claim 1, characterized in that: A slide rail (10) is fixedly mounted on the inner wall of the mounting box (1), the inner wall of the slide rail (10) and the side surface of the roller (17) are mutually adapted, a second connecting plate (15) is rotatably mounted on the side surface of the connecting rod (8), and an upper hinged member (16) is hingedly mounted on the other end surface of the second connecting plate (15) via a pin.

3. A lightning protection device for a power transformer according to claim 1, characterized in that: A lower hinged part (11) is fixedly mounted on the inner wall of the installation box (1), a connecting plate 1 (12) is hingedly mounted inside the lower hinged part (11), an upper hinged part 1 (13) is hingedly mounted on the other end surface of the connecting plate 1 (12) via a pin, and the side surfaces of the connecting plate 1 (12) and the connecting plate 2 (15) are hingedly connected via a pin.

4. A lightning protection device for a power transformer according to claim 3, characterized in that: A sliding block (14) is fixedly mounted on the top surface of the upper hinged member (13).

5. A lightning protection device for a power transformer according to claim 1, characterized in that: A slide groove (20) is fixedly provided on the bottom end surface of the mounting plate (19), and the inner wall of the slide groove (20) is slidably connected to the side of the slider (14). A fixing block (21) is fixedly installed on the top end surface of the mounting plate (19), and a servo motor (22) is fixedly installed on the side of the fixing block (21). A mounting block (23) is fixedly installed on the side of the transmission rod of the servo motor (22), and a conductive component (24) is fixedly installed on the side of the mounting block (23). A support member (27) is fixedly installed on the top end surface of the mounting plate (19).

6. A lightning protection device for a power transformer according to claim 5, characterized in that: A telescopic rod (25) is fixedly mounted on the side of the mounting block (23), a lightning arrester assembly (26) is fixedly mounted on the top surface of the telescopic rod (25), and the inner wall of the support member (27) is mutually adapted to the side of the telescopic rod (25).

7. A lightning protection device for a power transformer according to claim 1, characterized in that: A fixing part (2) is fixedly mounted on the side of the installation box (1), a protective shell (9) is fixedly mounted on the top surface of the installation plate (19), a heat dissipation hole is fixedly opened on the side of the protective shell (9), the protective shell (9) is sleeved on the outside of the servo motor (22), and a buffer pad (18) is fixedly mounted on the top surface of the installation box (1).

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