A dry-type power transformer and its usage method

Abstract

The application relates to the field of transformers, and discloses a dry-type power transformer and a use method, which comprise a supporting base, the top of the supporting base is provided with two symmetrical supporting seats, and the top of the supporting seat is fixedly provided with a mounting seat. The application is provided with a fire extinguishing mechanism, the fire extinguishing mechanism is installed on the inner wall of a protective door frame, a rotating assembly is further arranged in the fire extinguishing mechanism, after a smoke sensor on a supporting top plate senses smoke on a transformer body, the rotating assembly and an electric control valve on a fire extinguisher tank work simultaneously, fire extinguishing substances in the fire extinguisher tank are sprayed out from a fire extinguisher nozzle, and the rotating assembly drives the fire extinguisher nozzle to rotate back and forth, so that the transformer body is extinguished on one hand, and the fire extinguishing range of the transformer body is increased on the other hand, and the safety protection performance is improved.

Description

Technical Field

[0001] This invention relates to the field of transformers, and in particular to a dry-type power transformer and its usage method. Background Technology

[0002] Dry-type transformers are widely used in local lighting, high-rise buildings, airports, docks, CNC machinery and equipment and other places. Simply put, a dry-type transformer is a transformer whose core and windings are not immersed in insulating oil.

[0003] During the use of dry-type transformers, sometimes certain factors can cause the transformer to catch fire. The usual way to extinguish a transformer fire is for workers to use handheld fire extinguishers. This method is inefficient, poses certain safety hazards, and is not very functional. Summary of the Invention

[0004] To address the problems mentioned in the background section, the present invention provides a dry-type power transformer and its usage method.

[0005] The present invention provides a dry-type power transformer and its usage method, which adopts the following technical solution:

[0006] A dry-type power transformer includes a support base, on the top of which two symmetrical support seats are installed. A mounting base is fixedly installed on the top of the support seats, and the transformer body is fixedly installed on the top of the mounting seats. Two symmetrical support columns are fixedly installed on the top of the mounting seats, and a support top plate is fixedly installed on the top of the support columns. A smoke sensor is installed at the bottom of the support top plate. A servo mechanism is installed on the top of the support base, which drives corresponding protective door frames to open and close. Two symmetrical fire extinguishing mechanisms are installed on the inner walls of the two protective door frames. A heat dissipation frame is fixedly installed at the heat dissipation vent on the support top plate, and a moving mechanism for moving the heat dissipation box is installed on the outer wall of the heat dissipation frame.

[0007] The fire extinguishing mechanism includes two first limiting blocks fixed on the inner wall of the protective door frame. The cooperation between the first limiting blocks and the second limiting blocks limits and fixes the fire extinguisher canister. The fire extinguisher canister is provided with a fire extinguisher nozzle at its outlet. The fire extinguisher nozzle is provided with an electric control valve. The outlet of the fire extinguisher nozzle is connected to the fire extinguisher nozzle through a fire extinguisher hose. The inner wall of the protective door frame is also provided with a connecting seat. A rotating component that drives the fire extinguisher nozzle to rotate is installed on the connecting seat.

[0008] The rotating assembly includes a positioning block mounted on the top of the connecting seat, a cylinder mounted on the positioning block, the output end of the cylinder being fixedly mounted to a rack, the rack being meshed with a gear, the shaft hole of the gear being mounted to one end of a support rod, the other end of the support rod being fixedly mounted to a U-shaped frame, a screw hole on the side wall of the U-shaped frame being fitted to a screw rod, and one end of the screw rod being mounted to a bearing seat mounted on a clamping block via a bearing, the clamping block clamping and fixing the fire extinguisher nozzle.

[0009] Preferably, the servo mechanism includes a first servo motor fixedly installed at both ends of the support base. The output end of the first servo motor is installed with one end of the first lead screw, and the other end of the first lead screw is installed with a bearing seat installed on the second slot wall at the bottom of the support base via a bearing. The first lead screw is also adapted to be installed with a first lead screw block provided at the bottom of the protective door frame.

[0010] Preferably, the two side walls of the supporting top plate are provided with first slots, the inner wall of the first slots is provided with guide rods, and one side wall of the protective door frame is provided with guide blocks, which move on the guide rods.

[0011] Preferably, the moving mechanism includes two symmetrical bosses fixedly installed at both ends of the heat dissipation frame. A second servo motor is fixedly installed on one of the bosses. The output end of the second servo motor is connected to one end of a second lead screw. The other end of the second lead screw is installed with a bearing seat installed on the other boss via a bearing. A second lead screw is also adapted to be installed with a second lead sleeve block. A support rod is provided on the top of the second lead sleeve block. The top end of the support rod is fixedly installed with a boss installed on the outer wall of the heat dissipation box.

[0012] Preferably, a support bar is provided on the inner wall of the heat dissipation box, and a dustproof net is fixedly installed at the bottom of the support bar. A cooling fan is provided inside the heat dissipation box above the dustproof net.

[0013] Preferably, a heat dissipation fin holder is installed on the top of the transformer body, and heat dissipation fins are installed on the heat dissipation fin holder.

[0014] A method for using a dry-type transformer includes the following steps:

[0015] S1. Fire extinguishing steps for the transformer body: First, the smoke sensor at the bottom of the support plate detects the smoke and transmits the signal to the controller. The controller then transmits the signal to the electric control valve on the fire extinguisher nozzle, which opens the valve. At the same time, the cylinder works, and the extinguishing agent in the fire extinguisher canister is sprayed out through the fire extinguisher nozzle to extinguish the fire at the transformer body. Moreover, after the cylinder works, it drives the rack to move back and forth. As the rack moves back and forth, the corresponding gear rotates, which in turn drives the U-shaped frame to rotate at a certain angle, which can increase the fire extinguishing range at the transformer body.

[0016] S2. Steps for replacing the dust filter inside the heat sink: The second servo motor operates, driving the second lead screw to rotate. As the second lead screw rotates, the corresponding second lead sleeve block moves accordingly, thereby moving the heat sink to one side at the top of the heat dissipation frame, causing the heat sink to separate from the heat dissipation frame. The dust filter inside the heat sink will then be exposed, eliminating the need for auxiliary tools to go to the top of the support plate to replace the dust filter.

[0017] In summary, the present invention has the following beneficial technical effects:

[0018] 1. This invention is equipped with a fire extinguishing mechanism, which is installed on the inner wall of the protective door frame. The fire extinguishing mechanism is also equipped with a rotating component. After the smoke sensor on the support top plate detects the smoke on the transformer body, the rotating component and the electric control valve on the fire extinguisher tank will work simultaneously. The fire extinguishing material in the fire extinguisher tank will be sprayed out from the fire extinguisher nozzle. The rotating component will drive the fire extinguisher nozzle to rotate back and forth. On the one hand, it can extinguish the fire on the transformer body, and on the other hand, it can increase the fire extinguishing range of the transformer body and improve safety protection.

[0019] 2. In this invention, the heat dissipation fan frame and the heat dissipation box are separable. A moving mechanism is installed at both ends of the heat dissipation fan frame. After the moving mechanism is activated, it drives the heat dissipation box to move, so that the heat dissipation box and the heat dissipation fan frame are separated. The dust screen inside the heat dissipation box will be exposed, so that maintenance personnel can replace and maintain the dust screen from below, making the operation simpler. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of a dry-type power transformer and its usage method according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the position and structure of the fire extinguisher canister in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the position structure of the first limiting block in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the position and structure of the transformer body in an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the position and structure of the heat dissipation fan frame in an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the heat dissipation box in an embodiment of the present invention;

[0026] Figure 7 This is an embodiment of the present invention. Figure 3 Enlarged view of the structure at point A;

[0027] Figure 8 This is an embodiment of the present invention. Figure 5 Enlarged view of the structure at point B.

[0028] Explanation of reference numerals in the attached drawings: 1. Support base; 2. Support top plate; 3. Protective door frame; 4. First slot; 5. Guide rod; 6. Heat dissipation frame; 7. Heat dissipation box; 8. Support seat; 9. Mounting seat; 10. First servo motor; 11. Second slot; 12. First lead screw; 13. First limit block; 14. Second limit block; 15. Fire extinguisher canister; 16. Connecting seat; 17. Transformer body; 18. Heat dissipation fin seat; 19. Heat dissipation fins; 20. Support column; 21. Fire extinguisher nozzle; 22. Fire extinguisher nozzle; 23. Positioning block; 24. Cylinder; 25. Rack; 26. Gear; 27. Support rod; 28. U-shaped frame; 29. ​​Screw; 30. Clamping block; 31. Support bar; 32. Dustproof net; 33. Boss; 34. Second servo motor; 35. Second lead screw; 36. Second lead screw sleeve block; 37. Support rod; 38. Protrusion. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1-8 The present invention will be described in further detail below.

[0030] This invention discloses a dry-type power transformer, including a support base 1. Two symmetrical support seats 8 are installed on the top of the support base 1. The top of the support seats 8 is fixedly installed on the mounting seat 9. The top of the mounting seat 9 is fixedly installed on the transformer body 17. Two symmetrical support columns 20 are fixedly installed on the top of the mounting seat 9. A support top plate 2 is fixedly installed on the top of the support columns 20. A smoke sensor is provided at the bottom of the support top plate 2. A servo mechanism is installed on the top of the support base 1. The servo mechanism drives the corresponding protective door frame 3 to open and close. Two symmetrical fire extinguishing mechanisms are provided on the inner walls of the two protective door frames 3. A heat dissipation frame 6 is fixedly installed at the heat dissipation vent on the support top plate 2. A moving mechanism for moving the heat dissipation box 7 is installed on the outer wall of the heat dissipation frame 6.

[0031] The fire extinguishing mechanism includes two first limiting blocks 13 fixed to the inner wall of the protective door frame 3. The cooperation between the first limiting blocks 13 and the second limiting blocks 14 limits and fixes the fire extinguisher canister 15. The fire extinguisher outlet of the fire extinguisher canister 15 is equipped with a fire extinguisher nozzle 21. The fire extinguisher nozzle 21 is equipped with an electric control valve. The outlet of the fire extinguisher nozzle 21 is connected to the fire extinguisher nozzle 22 through a fire extinguisher hose. The inner wall of the protective door frame 3 is also equipped with a connecting seat 16. The connecting seat 16 is equipped with a rotating component that drives the fire extinguisher nozzle 22 to rotate. When the transformer body 17 catches fire due to a fault, the smoke sensor on the supporting top plate 2 will sense the smoke and transmit the signal to the controller. The controller will transmit the signal to the electric control valve on the fire extinguisher nozzle 21, and the electric control valve will open. At the same time, the cylinder 24 will work simultaneously, and the fire extinguishing material in the fire extinguisher canister 15 will be sprayed out through the fire extinguisher nozzle 22 to extinguish the fire at the transformer body 17.

[0032] The rotating assembly includes a positioning block 23 mounted on the top of the connecting seat 16. A cylinder 24 is mounted on the positioning block 23. The output end of the cylinder 24 is fixedly mounted between the cylinder 24 and the rack 25. The rack 25 is meshed with a gear 26. The shaft hole of the gear 26 is installed with one end of the support rod 27. The other end of the support rod 27 is fixedly mounted between the support rod 27 and the U-shaped frame 28. The screw hole on the side wall of the U-shaped frame 28 is adapted to the screw 29. One end of the screw 29 is installed with a bearing seat mounted on the clamping block 30 through a bearing. The clamping block 30 clamps and fixes the fire extinguisher nozzle 22. After the cylinder 24 works, it drives the rack 25 to move back and forth. While the rack 25 moves back and forth, the corresponding gear 26 will rotate, thereby driving the U-shaped frame 28 to rotate at a certain angle. This can increase the fire extinguishing range at the transformer body 17, so that the fire can be extinguished in time and the fire extinguishing efficiency can be improved.

[0033] See Figure 1 The servo mechanism includes a first servo motor 10 fixedly installed at both ends of the support base 1. The output end of the first servo motor 10 is installed with one end of the first lead screw 12, and the other end of the first lead screw 12 is installed with a bearing seat installed on the wall of the second slot 11 at the bottom of the support base 1 via a bearing. The first lead screw 12 is also adapted to be installed with the first lead sleeve block provided at the bottom of the protective door frame 3. The two side walls of the support top plate 2 are provided with first slots 4, and the inner wall of the first slots 4 is provided with guide rods 5. The side wall of the protective door frame 3 is provided with a guide block, which moves on the guide rods 5. When it is necessary to close the protective door frames 3, the first servo motor 10 in the servo mechanism works, driving the first lead screw 12 to rotate. While the first lead screw 12 rotates, it drives the corresponding protective door frame 3 to move, so that the two protective door frames 3 and the support top plate 2 are combined to cover the transformer body 17.

[0034] See Figure 1 , Figure 5 and Figure 8 The moving mechanism includes two symmetrical bosses 33 fixedly installed at both ends of the heat dissipation frame 6. A second servo motor 34 is fixedly installed on one of the bosses 33. The output end of the second servo motor 34 is connected to one end of a second lead screw 35. The other end of the second lead screw 35 is installed with a bearing seat installed on the other boss 33 via a bearing. A second threaded sleeve block 36 is also fitted onto the second lead screw 35. A support rod 37 is provided on the top of the second threaded sleeve block 36. The top end of the support rod 37 is fixedly installed between a boss 38 installed on the outer wall of the heat dissipation box 7. A support bar 31 is provided on the inner wall of the heat dissipation box 7. The dustproof mesh 32 is fixedly installed at the bottom. A cooling fan is installed above the dustproof mesh 32 inside the heat sink 7. When the dustproof mesh 32 inside the heat sink 7 needs to be replaced, the second servo motor 34 in the moving mechanism works, driving the second lead screw 35 to rotate. As the second lead screw 35 rotates, the second lead sleeve block 36 will move accordingly. At the same time, it will slowly push the heat sink 7 to one side, so that the heat sink 7 and the cooling fan frame 6 are separated, and the dustproof mesh 32 will be exposed. In this way, maintenance personnel can stand below the dustproof mesh 32 to replace it, which is convenient.

[0035] See Figure 1 , Figure 2 and Figure 4 A heat dissipation fin seat 18 is installed on the top of the transformer body 17, and heat dissipation fins 19 are installed on the heat dissipation fin seat 18. The heat dissipation fins 19 can increase the heat dissipation effect on the transformer body 17.

[0036] A method for using a dry-type transformer includes the following steps:

[0037] S1. Fire extinguishing procedure for transformer body 17: First, the smoke sensor at the bottom of the support top plate 2 detects the smoke and transmits the signal to the controller. The controller then transmits the signal to the electric control valve on the fire extinguisher nozzle 21, which opens the valve. At the same time, the cylinder 24 works, and the extinguishing agent in the fire extinguisher canister 15 is sprayed out through the fire extinguisher nozzle 22 to extinguish the fire at the transformer body 17. Moreover, after the cylinder 24 works, it drives the rack 25 to move back and forth. As the rack 25 moves back and forth, the corresponding gear 26 rotates, which in turn drives the U-shaped frame 28 to rotate at a certain angle, thereby increasing the fire extinguishing range at the transformer body 17.

[0038] S2. Steps for replacing the dust filter 32 inside the heat sink 7: The second servo motor 34 operates, driving the second lead screw 35 to rotate. As the second lead screw 35 rotates, the corresponding second lead sleeve block 36 moves accordingly, thereby moving the heat sink 7 to one side on the top of the heat dissipation frame 6, causing the heat sink 7 to separate from the heat dissipation frame 6. The dust filter 32 inside the heat sink 7 will then be exposed, eliminating the need for auxiliary tools to replace the dust filter 32 on the top of the support plate 2.

[0039] The implementation principle of a dry-type power transformer and its usage method according to an embodiment of the present invention is as follows: When it is necessary to close the protective door frames 3, the first servo motor 10 in the servo mechanism works, driving the first lead screw 12 to rotate. Simultaneously, the first lead screw 12 rotates, driving the corresponding protective door frames 3 to move, so that the two protective door frames 3 and the supporting top plate 2 combine to cover the transformer body 17. When the transformer body 17 catches fire due to a fault, the smoke sensor on the supporting top plate 2 will detect the smoke and transmit the signal to the controller. The controller will then transmit the signal to the electrically controlled valve on the fire extinguisher nozzle 21, causing the electrically controlled valve to open. At the same time, the cylinder 24 will work, and the extinguishing agent in the fire extinguisher canister 15 will be sprayed out through the fire extinguisher nozzle 22 to extinguish the fire at the transformer body 17. Furthermore, the cylinder 24... After operation, the rack 25 moves back and forth, and as the rack 25 moves back and forth, the corresponding gear 26 rotates, which in turn drives the U-shaped frame 28 to rotate at a certain angle. This increases the fire extinguishing range at the transformer body 17, allowing for timely fire extinguishing and improving fire extinguishing efficiency. When it is necessary to replace the dust filter 32 inside the heat sink 7, the second servo motor 34 in the moving mechanism operates, driving the second lead screw 35 to rotate. As the second lead screw 35 rotates, the second lead sleeve block 36 moves accordingly, and at the same time, it slowly pushes the heat sink 7 to one side, separating the heat sink 7 from the heat sink frame 6, exposing the dust filter 32. This allows maintenance personnel to stand below the dust filter 32 and easily replace it.

[0040] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A dry-type power transformer, comprising a support base (1), wherein two symmetrical support seats (8) are installed on the top of the support base (1), a mounting seat (9) is fixedly installed on the top of the support seat (8), a transformer body (17) is fixedly installed on the top of the mounting seat (9), two symmetrical support columns (20) are fixedly installed on the top of the mounting seat (9), a support top plate (2) is fixedly installed on the top of the support columns (20), and a smoke sensor is provided at the bottom of the support top plate (2), characterized in that: The top of the support base (1) is provided with a servo mechanism, which drives the corresponding protective door frame (3) to open and close, the inner wall of the two protective door frames (3) is provided with two symmetrical fire extinguishing mechanisms, the support top plate (2) is provided with a heat dissipation air frame (6) fixedly installed at the heat dissipation opening, and the outer wall of the heat dissipation air frame (6) is provided with a moving mechanism for moving the heat dissipation machine box (7). The fire extinguishing mechanism comprises two first limiting blocks (13) fixed on the inner wall of the protective door frame (3), the cooperation between the first limiting block (13) and the second limiting block (14) limits and fixes the fire extinguisher tank (15), the fire extinguisher outlet of the fire extinguisher tank (15) is provided with a fire extinguisher nozzle (21), the fire extinguisher nozzle (21) is provided with an electric control valve, the outlet of the fire extinguisher nozzle (21) is connected with the fire extinguisher nozzle (22) through a fire extinguisher hose, and the inner wall of the protective door frame (3) is also provided with a connecting seat (16). The rotating assembly comprises a positioning block (23) installed at the top of the connecting seat (16), a gas cylinder (24) installed on the positioning block (23), a fixed installation between the output end of the gas cylinder (24) and the rack (25), a meshing installation between the rack (25) and the gear (26), an installation between the shaft hole of the gear (26) and one end of the support rod (27), a fixed installation between the other end of the support rod (27) and the U-shaped frame (28), an adaptive installation between the screw hole formed in the side wall of the U-shaped frame (28) and the screw rod (29), and an installation between one end of the screw rod (29) and the bearing seat installed on the bearing of the clamping block (30). The clamping block (30) clamps and fixes the fire extinguisher nozzle (22).

2. A dry-type electrical transformer according to claim 1, characterized in that: The servo mechanism comprises a first servo motor (10) fixedly installed at both ends of the support base (1), the output end of the first servo motor (10) is installed at one end of the first lead screw (12), the other end of the first lead screw (12) is installed on the bearing seat installed on the groove wall of the second groove (11) formed in the bottom of the support base (1) through the bearing, and the first lead screw (12) is adaptively installed between the first lead screw block arranged at the bottom of the protective door frame (3).

3. A dry-type electrical transformer as defined in claim 1, characterized in that: The first groove (4) is formed in the side wall of the support top plate (2), the guide rod (5) is arranged on the inner wall of the first groove (4), and the guide block is arranged on one side wall of the protective door frame (3).

4. A dry-type electrical transformer as defined in claim 1, characterized in that: The moving mechanism comprises two symmetrical bosses (33) fixedly installed at both ends of the heat dissipation air frame (6), a second servo motor (34) is fixedly installed on one of the bosses (33), one end of a second lead screw (35) is connected with the output end of the second servo motor (34), the other end of the second lead screw (35) is installed with a bearing seat installed on the other boss (33) through a bearing, a second lead screw sleeve block (36) is also installed on the second lead screw (35), a supporting rod (37) is arranged on the top of the second lead screw sleeve block (36), and the top end of the supporting rod (37) is fixedly installed with a lug (38) installed on the outer wall of the heat dissipation box (7).

5. A dry-type electrical transformer according to claim 4, characterized in that: A supporting strip (31) is arranged on the inner wall of the heat dissipation box (7), the dustproof net (32) is fixedly installed on the bottom of the supporting strip (31), and a heat dissipation fan is arranged above the dustproof net (32) in the heat dissipation box (7).

6. A dry-type electrical transformer as defined in claim 1, characterized in that: The top of the transformer body (17) is provided with a heat dissipation fin seat (18), and the heat dissipation fin seat (18) is provided with a heat dissipation fin (19).

7. A method of using a dry-type transformer according to any one of claims 1-6, characterized in that: The steps include: S1, extinguishing the transformer body (17): first, the smoke sensor at the bottom of the supporting top plate (2) senses smoke, then the signal is transmitted to the controller, the controller transmits the signal to the electric control valve on the extinguisher nozzle (21), the electric control valve is opened, at the same time, the cylinder (24) works, the extinguishing agent in the extinguisher tank (15) is sprayed out through the extinguisher nozzle (22), and the transformer body (17) is extinguished, and after the cylinder (24) works, the rack (25) moves back and forth, the corresponding gear (26) rotates, and the U-shaped frame (28) rotates by a certain angle, which can increase the extinguishing range of the transformer body (17); S2, replace the dustproof net (32) in the heat dissipation box (7): the second servo motor (34) works, drives the second lead screw (35) to rotate, the corresponding second lead screw sleeve block (36) moves, and the heat dissipation box (7) moves to one side on the top of the heat dissipation air frame (6), so that the heat dissipation box (7) and the heat dissipation air frame (6) are separated, and the dustproof net (32) in the heat dissipation box (7) is exposed, so that the dustproof net (32) on the top of the supporting top plate (2) is replaced without the aid of auxiliary tools.

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