A high-heat-dissipation vacuum circuit breaker and a production and manufacturing method thereof

Abstract

This invention provides a high-heat-dissipation vacuum circuit breaker and its manufacturing method, relating to the field of vacuum circuit breaker technology. The invention includes: a base frame; a partition plate is bolted to the base frame, and side seats are bolted to the left and right sides of the upper end of the partition plate. Reinforcing plates are bolted to the inside of the side seats, and fixing plates are bolted to the front and rear ends of both sets of side seats. Mounting posts are mounted on the fixing posts, connecting plates are mounted on the mounting posts, and torsion springs are mounted on the mounting posts. This invention uses a nozzle to spray a graphene layer onto the surface of the protective shell, transferring the heat generated by the conductive circuit outward through the protective shell. Since the entire protective shell is covered with a graphene layer, the outward heat transfer rate is greatly improved, effectively reducing the temperature rise when a large rated current passes through the vacuum circuit breaker. The thickness of the graphene layer is 1–500 μm. Controlling the graphene layer within this range effectively reduces the temperature rise without affecting other performance characteristics of the vacuum circuit breaker.

Description

Technical Field

[0001] This invention relates to the field of vacuum circuit breaker technology, and in particular to a vacuum circuit breaker with high heat dissipation and its manufacturing method. Background Technology

[0002] Vacuum circuit breakers have advantages such as long service life, ease of maintenance, suitability for frequent operation, and small size. With the continuous deepening of research on vacuum arc theory and increasing environmental awareness, vacuum circuit breakers are constantly developing towards miniaturization, larger capacity, and higher voltage for vacuum interrupters. Heat is generated when current flows through the conductive circuit of a vacuum circuit breaker. When the rated current is relatively large, the temperature rise of the vacuum circuit breaker is also relatively large. Excessive temperature rise not only significantly affects the mechanical strength of the conductive material but also easily causes oxidation of the conductor metal surface. The generated oxides increase contact resistance, affecting the circuit breaker's circuit resistance and electrical performance. Simultaneously, excessive temperature rise also increases the dielectric loss of the insulation components, accelerating their aging. How to effectively reduce the temperature rise of vacuum circuit breakers has received widespread attention. This invention is a vacuum circuit breaker with high heat dissipation.

[0003] Existing vacuum circuit breakers have a large temperature rise and poor heat dissipation, which affects the service life of the internal insulation components. Summary of the Invention

[0004] This disclosure relates to a vacuum circuit breaker with high heat dissipation and its manufacturing method, in order to solve the problems of large temperature rise and poor heat dissipation in existing vacuum circuit breakers, which affect the service life of the internal insulation components of the vacuum circuit breaker.

[0005] In a first aspect, this disclosure provides a vacuum circuit breaker with high heat dissipation and a method for manufacturing the same, specifically including: a base frame;

[0006] A partition plate is bolted to the base frame. Side seats are bolted to the left and right sides of the upper part of the partition plate. Reinforcing plates are screwed into the side seats. Fixing plates are bolted to the front and rear ends of both sets of side seats. Mounting posts are mounted on the fixing plates, and connecting plates are mounted on the mounting posts. The connecting plates are rotatably connected to the mounting posts. Torsion springs are mounted on the mounting posts, with their lower ends hooked onto the connecting plates. Insertion rods are fixed to the fixing plates, and the upper ends of the torsion springs are inserted into the insertion holes on the insertion rods. A base is mounted above the partition plate, fixed to four sets of connecting plates. A circuit breaker body is fixed to the upper end of the base, and an isolation plate is fixed to the rear end of the circuit breaker body. A grounding plate is bolted to the upper end of the base, and bolts are used to mount… There is a support plate, the upper end of which is bolted to the isolation plate. Three sets of protective shells are bolted to the rear end of the grounding plate. Baffles are fixed on both sides of the three sets of protective shells. A control plate is rotatably connected to the protective shell. The front end of the control plate is connected to the closing mechanism of the circuit breaker body. A connecting platform is provided on the protective shell, and a heat dissipation plate is provided on the protective shell. The protective shell is covered with a graphene layer and is made of aluminum. A moving contact plate is bolted to the connecting platform. Three sets of top seats are bolted to the support plate. A stationary contact plate is bolted to the top seats. An arc extinguisher No. 1 is installed between the stationary contact plate and the moving contact plate. A second arc extinguisher No. 2 is installed on the control plate. The upper end of the second arc extinguisher is in contact with the moving contact plate.

[0007] In at least some embodiments,

[0008] The control box has through slots on both the left and right sides, with rivets securing the shielding curtains to the slots. A door panel is mounted on the front of the control box via hinges, and two sets of observation windows are provided on the door panel. A rail frame is bolted to the inside of the control box, with rail rods bolted to the upper and lower ends of the rail frame. A toothed plate is fixed on the rail frame, and a movable seat is mounted on the rail frame. Rollers are mounted on the movable seat and roll on the rail rods on the rail frame. A No. 1 motor is bolted to the movable seat, and a gear is mounted on the output shaft of the No. 1 motor, which meshes with the toothed plate on the rail frame.

[0009] In at least some embodiments,

[0010] A support plate is mounted on the upper end of the movable base, and the support plate is rotatably connected to the upper end of the movable base. A hydraulic rod is rotatably connected to the movable base, and the telescopic end of the hydraulic rod is rotatably connected to the lower end of the support plate. A mounting base is fixed on the upper end of the support plate, and a second motor is mounted on the lower end of the mounting base by bolts. A turntable is mounted on the output shaft of the second motor, and two sets of ball bearing seats are mounted on the upper end of the mounting base by bolts. Ball bearing seats contain balls, and the balls are in contact with the bottom surface of the turntable.

[0011] In at least some embodiments,

[0012] A U-shaped seat is fixed on the turntable, and a fixed rod is installed on the U-shaped seat. Two sets of clamping arms are rotatably connected to the fixed rod. The clamping arms are provided with sliding grooves, and two sets of fixed columns are fixed on the U-shaped seat. A round rod is fixed between the two sets of fixed columns. The round rod passes through the sliding grooves on the two sets of clamping arms, and a spring is installed on the round rod. The spring is located between the clamping arm and the fixed column. A rotating wheel is installed on the clamping arm. A second hydraulic rod is installed on the U-shaped seat by bolts. A conical head is fixed on the piston rod of the second hydraulic rod. The conical head is located between the rollers on the two sets of clamping arms. The two sets of clamping arms are used to clamp the protective shell.

[0013] In at least some embodiments,

[0014] The control box has two sets of load-bearing rods fixed inside, and two sets of crossbeams fixed on the two sets of load-bearing rods. Hanging plates are installed on the two sets of crossbeams by bolts. The hanging plates are provided with mounting grooves. A top cover is installed between the two sets of hanging plates. The front and rear ends of the top cover are installed in the mounting grooves on the hanging plates. A heat insulation cover is fixed inside the top cover. A mounting shell is fixed at the lower end of the top cover. A baking device is installed inside the mounting shell.

[0015] In at least some embodiments,

[0016] The control box is equipped with a fixed frame installed inside by bolts. Two sets of No. 1 plates are fixed to the upper end of the fixed frame, and a No. 2 plate is also fixed to the fixed frame. Two sets of threaded rods are installed between the two sets of No. 1 plates and the lower end of the fixed frame. A worm gear box is installed at the upper end of the threaded rod. The worm gear box is installed on the No. 1 plate by bolts, and the two sets of worm gear boxes on the two sets of No. 1 plates are connected by a transmission rod. A gearbox is installed on the No. 2 plate by bolts, and a No. 3 motor is installed on the gearbox by bolts. Gearboxes are installed on both sets of No. 1 plates, and the gearboxes are connected to the worm gear boxes. The two sets of gearboxes are connected to the gearbox.

[0017] In at least some embodiments,

[0018] A lifting rod is installed on the threaded rod. There are two sets of lifting rods. Two sets of threaded cylinders are installed on the lifting rods by bolts. The threaded cylinders are threadedly engaged with the threaded rods. A side plate is fixed on the lifting rod. A sliding groove is provided on the side plate. A first mounting block is installed on the side plate by bolts. A first roller is installed on the first mounting block. A second mounting block is also installed on the side plate by bolts. A second roller is installed on the second mounting block. Two sets of tensioning bolts are threaded onto the side plate. The two sets of tensioning bolts are pressed against the second mounting block. The first roller and the second roller are in contact with the fixed frame.

[0019] In at least some embodiments,

[0020] Two sets of welding seats are fixed to the lower ends of the two sets of lifting rods. A cylinder is fixed on the welding seat, and a buffer rod is installed inside the cylinder. A spring is installed on the buffer rod, and a fixed seat is fixed to the lower end of the four sets of buffer rods. A frame is fixed to the lower end of the fixed seat.

[0021] In at least some embodiments,

[0022] An active rod is mounted on the frame, and a motor frame is bolted to the frame. A fourth motor is bolted to the motor frame, and the fourth motor drives the active rod to rotate via a belt. Two sets of connecting wheels are mounted on the frame, and a first transmission belt connects the active rod to the two sets of connecting wheels. Two sets of first sliding rods are fixed on the frame, and sliding blocks slide on the first sliding rods. The upper ends of the two sets of sliding blocks are connected to the two sets of first transmission belts by screws. A second sliding rod is mounted between the two sets of sliding blocks, and a second transmission belt is also mounted between the two sets of sliding blocks. A fifth motor is bolted to the lower end of the sliding block near the right end of the second sliding rod, and the fifth motor drives the second transmission belt. Movable seats slide on the two sets of second sliding rods, and the movable seats are connected to the second transmission belt by screws. A nozzle is mounted on the movable seat, and the nozzle is connected to an external graphene slurry supply device.

[0023] This invention discloses a vacuum circuit breaker with high heat dissipation and its manufacturing method, comprising the following steps:

[0024] 1) By controlling the extension of the second hydraulic rod, the conical head pushes the two sets of clamping arms, and the two sets of clamping arms clamp the protective shell;

[0025] 2) Activate motor 1 to move the protective shell to the left, spraying graphene slurry onto the protective shell through the nozzle. Activate motor 3 to adjust the nozzle height and control the extension and retraction of hydraulic rod 1 to adjust the tilt angle of the protective shell between the two sets of clamping arms. Activate motor 2 to rotate the protective shell. The mass percentage composition of the graphene slurry is: solvent 70%–95%, graphene 4.5%–27%, dispersant 0.5%–3%.

[0026] 3) Activate motor number one to move the protective shell coated with graphene slurry to the right, so that it moves to the lower end of the baking oven. The baking oven emits a high temperature of 50℃~300℃ to bake the protective shell, so that the graphene slurry on the protective shell dries quickly.

[0027] This invention provides a method for manufacturing a vacuum circuit breaker with high heat dissipation, which has the following beneficial effects:

[0028] In this invention, a graphene layer is sprayed onto the surface of the protective shell using a nozzle. Utilizing the excellent thermal conductivity, electrical conductivity, and heat dissipation properties of the graphene layer, the heat generated by the conductive circuit is transferred outward through the protective shell. Since the entire protective shell is covered with a graphene layer, the outward heat transfer rate is greatly improved, effectively reducing the temperature rise when a large rated current passes through the vacuum circuit breaker. Because graphene itself also has a strong heat dissipation capacity, it can also reduce the temperature rise. The thickness of the graphene layer is 1–500 μm. By controlling the graphene layer within this range, the temperature rise can be effectively reduced without affecting other performance characteristics of the vacuum circuit breaker, resulting in excellent heat dissipation.

[0029] Furthermore, in the process of spraying graphene slurry onto the protective shell, the present invention adjusts the height of the spray nozzle by operating motor No. 3, controls the extension and retraction of hydraulic rod No. 1 to adjust the tilt angle of the protective shell between the two sets of clamping arms, and operates motor No. 2 to rotate the protective shell. The protective shell is baked by the heat radiating high temperature of 50℃ to 300℃ through the baking oven, so that the graphene slurry on the protective shell dries quickly. Then it can be assembled. The manufacturing method is simple, has a wide range of applications, and has a significant and lasting effect in reducing temperature rise. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0031] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0032] In the attached diagram:

[0033] Figure 1 This is a schematic diagram of the overall front structure of the circuit breaker according to an embodiment of the present invention;

[0034] Figure 2 This is an embodiment of the present invention. Figure 1 Enlarged structural diagram at point A;

[0035] Figure 3 This is a schematic diagram of the overall left side structure of the circuit breaker according to an embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of the overall rear structure of the circuit breaker according to an embodiment of the present invention;

[0037] Figure 5 This is a schematic diagram of the structure of the protective shell according to an embodiment of the present invention;

[0038] Figure 6 This is a schematic diagram of the internal structure of the control box according to an embodiment of the present invention;

[0039] Figure 7This is a schematic diagram of the structure of the movable base according to an embodiment of the present invention;

[0040] Figure 8 This is an embodiment of the present invention. Figure 7 Enlarged structural diagram at point B;

[0041] Figure 9 This is a schematic diagram of the structure of the U-shaped seat according to an embodiment of the present invention;

[0042] Figure 10 This is a schematic diagram of the structure of the hanging platform according to an embodiment of the present invention;

[0043] Figure 11 This is a schematic diagram of the structure of the fixing frame according to an embodiment of the present invention;

[0044] Figure 12 This is a schematic diagram of the side plate structure according to an embodiment of the present invention;

[0045] Figure 13 This is a schematic diagram of the welding seat according to an embodiment of the present invention;

[0046] Figure 14 This is a schematic diagram of the framework of an embodiment of the present invention;

[0047] Figure 15 This is an embodiment of the present invention. Figure 14 A magnified structural diagram at point C.

[0048] List of reference numerals

[0049] 1. Base frame; 11. Partition plate; 12. Side seat; 121. Reinforcing plate; 122. Fixing plate; 1221. Mounting column; 1222. Torsion spring; 1223. Insertion rod; 123. Connecting plate;

[0050] 2. Base; 21. Circuit breaker body; 22. Isolation plate; 221. Grounding plate; 222. Support plate; 223. Protective shell; 2231. Connecting platform; 2232. Heat sink; 2233. Moving contact plate; 2234. Baffle; 224. Control board; 225. Arc extinguisher No. 2; 226. Arc extinguisher No. 1; 23. Top seat; 231. Static contact plate;

[0051] 3. Control box; 31. Screen curtain; 32. Door panel; 321. Observation window; 33. Rail frame; 331. Moving seat; 332. Motor No. 1; 333. Support plate; 334. Hydraulic rod No. 1; 335. Mounting seat; 3351. Motor No. 2; 3352. Ball bearing seat; 336. Turntable; 3361. Fixed rod; 3362. Clamping arm; 3363. Fixed column; 3364. Round rod; 337. U-shaped seat; 3371. Hydraulic rod No. 2; 3372. Conical head; 34. Hanging plate; 341. Load-bearing rod; 342. Crossbeam; 343. Top cover; 3431. Heat insulation cover; 3432. Mounting shell; 35. Fixed frame; 351. Plate No. 1; 3511. Threaded rod; 3512. Worm gear box; 3513. Gear Wheel box; 352, Plate No. 2; 3521, Gearbox; 3522, Motor No. 3; 353, Lifting rod; 3531, Threaded cylinder; 3532, Side plate; 3533, Mounting block No. 1; 3534, Roller No. 1; 3535, Mounting block No. 2; 3536, Roller No. 2; 3537, Tensioning bolt; 354, Welding seat; 3541, Cylinder; 3542, Buffer rod; 3543, Fixed seat; 36, Frame; 361, Drive rod; 3611, Drive belt No. 1; 362, Motor frame; 3621, Motor No. 4; 363, Slide rod No. 1; 3631, Sliding block; 3632, Motor No. 5; 3633, Drive belt No. 2; 3634, Slide rod No. 2; 3635, Movable seat; 3636, No. 1 nozzle. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] Please refer to Figures 1 to 15 :

[0054] Example 1:

[0055] This invention proposes a vacuum circuit breaker with high heat dissipation and its manufacturing method, comprising: a base frame 1;

[0056] A partition plate 11 is bolted to the base frame 1. Side seats 12 are bolted to the left and right sides of the upper end of the partition plate 11. Reinforcing plates 121 are screwed into the side seats 12. Fixing plates 122 are bolted to the front and rear ends of both sets of side seats 12. Mounting posts 1221 are mounted on the fixing plates 122, and connecting plates 123 are mounted on the mounting posts 1221. The connecting plates 123 are rotatably connected to the mounting posts 1221. Torsion springs 1222 are mounted on the mounting posts 1221. The lower end of spring 1222 is hooked onto connecting piece 123. A socket rod 1223 is fixed to the fixing piece 122. The upper end of torsion spring 1222 is inserted into the socket on the socket rod 1223. A base 2 is installed above partition 11. The base 2 is fixed to four sets of connecting pieces 123. A circuit breaker body 21 is fixed to the upper end of the base 2. An isolation plate 22 is fixed to the rear end of the circuit breaker body 21. A grounding plate 221 is bolted to the upper end of the base 2. A support is bolted to the grounding plate 221. Plate 222, the upper end of the support plate 222 is bolted to the isolation plate 22, the rear end of the grounding plate 221 is bolted to three sets of protective shells 223, the left and right sides of the three sets of protective shells 223 are fixed with baffles 2234, the protective shells 223 are rotatably connected to the control plate 224, the front end of the control plate 224 is connected to the closing mechanism of the circuit breaker body 21, the protective shells 223 are provided with a connecting platform 2231, and the protective shells 223 are provided with a heat dissipation plate 2232. 23 is covered with a graphene layer, and the protective shell 223 is made of aluminum. A moving contact plate 2233 is bolted to the connecting platform 2231. Three sets of top seats 23 are bolted to the support plate 222. A stationary contact plate 231 is bolted to the top seat 23. A first arc extinguisher 226 is installed between the stationary contact plate 231 and the moving contact plate 2233. A second arc extinguisher 225 is installed on the control plate 224. The upper end of the second arc extinguisher 225 is in contact with the moving contact plate 2233.

[0057] In this embodiment of the disclosure,

[0058] The control box 3 has through slots on both sides, with rivets securing a curtain 31 to each slot. A door panel 32 is hinged to the front of the control box 3, and the door panel 32 has two sets of observation windows 321. A rail frame 33 is bolted to the inside of the control box 3, with rail rods bolted to its upper and lower ends. A toothed plate is fixed to the rail frame 33, and a movable seat 331 is mounted on the rail frame 33. Rollers are mounted on the movable seat 331, rolling on the rail rods of the rail frame 33. A first motor 332 is bolted to the movable seat 331, and a gear is mounted on the output shaft of the first motor 332. The gear interacts with the rail... The toothed plates on the frame 33 mesh with each other. A support plate 333 is mounted on the upper end of the movable seat 331. The support plate 333 is rotatably connected to the upper end of the movable seat 331. A hydraulic rod 334 is rotatably connected to the movable seat 331. The telescopic end of the hydraulic rod 334 is rotatably connected to the lower end of the support plate 333. A mounting base 335 is fixed on the upper end of the support plate 333. A second motor 3351 is bolted to the lower end of the mounting base 335. A turntable 336 is mounted on the output shaft of the second motor 3351. Two sets of ball bearing seats 3352 are bolted to the upper end of the mounting base 335. Ball bearing seats 3352 contain balls. The balls interact with the turntable 333. The bottom surface of the turntable 336 is in contact with the bottom surface of the turntable 336. A U-shaped seat 337 is fixed on the turntable 336. A fixing rod 3361 is installed on the U-shaped seat 337. Two sets of clamping arms 3362 are rotatably connected to the fixing rod 3361. The clamping arms 3362 are provided with sliding grooves. Two sets of fixing posts 3363 are fixed on the U-shaped seat 337. A round rod 3364 is fixed between the two sets of fixing posts 3363. The round rod 3364 passes through the sliding grooves on the two sets of clamping arms 3362. A spring is installed on the round rod 3364. The spring is located between the clamping arms 3362 and the fixing posts 3363. A rotating wheel is installed on the clamping arms 3362. Two rotating wheels are installed on the U-shaped seat 337 by bolts. Hydraulic rod 3371 has a conical head 3372 fixed on its piston rod. The conical head 3372 is located between the rollers on the two sets of clamping arms 3362. The two sets of clamping arms 3362 are used to clamp the protective shell 223. Their function is as follows: the first motor 332 is operated to move the moving seat 331 left and right, and the first hydraulic rod 334 is controlled to extend and retract to adjust the tilt angle of the support plate 333. The second motor 3351 is operated to rotate the turntable 336, and the second hydraulic rod 3371 is controlled to extend so that the conical head 3372 pushes the two sets of clamping arms 3362, and the two sets of clamping arms 3362 clamp the protective shell 223.

[0059] In this embodiment of the disclosure,

[0060] The control box 3 has two sets of load-bearing rods 341 fixed inside, and two sets of crossbeams 342 fixed on the two sets of load-bearing rods 341. The two sets of crossbeams 342 are bolted to the two sets of crossbeams 342. The hanging plates 34 are provided with mounting grooves. The top cover 343 is installed between the two sets of hanging plates 34. The front and rear ends of the top cover 343 are installed in the mounting grooves on the hanging plates 34. The heat insulation cover 3431 is fixed inside the top cover 343. The lower end of the top cover 343 is fixed to the mounting shell 3432. The mounting shell 3432 is equipped with an oven. The oven emits a high temperature of 50℃~300℃ to bake the protective shell 223, so that the graphene slurry on the protective shell 223 dries quickly.

[0061] In this embodiment of the disclosure,

[0062] Inside the control box 3, a fixing frame 35 is bolted on. Two sets of first plates 351 are fixed to the upper end of the fixing frame 35, and a second plate 352 is also fixed to the fixing frame 35. Two sets of threaded rods 3511 are installed between the two sets of first plates 351 and the lower end of the fixing frame 35. A worm gear box 3512 is installed at the upper end of the threaded rod 3511. The worm gear box 3512 is bolted on the first plates 351, and the two sets of worm gear boxes 3512 on the two sets of first plates 351 are connected by a transmission rod. A gearbox 3521 is bolted onto plate 352. A motor 3522 is bolted onto gearbox 3521. Gearboxes 3513 are mounted on both plates 351. Gearboxes 3513 are connected to worm gearboxes 3512. Both gearboxes 3513 are connected to gearboxes 3521. A lifting rod 353 is mounted on the threaded rod 3511. Two sets of lifting rods 353 are provided, and two sets of threaded rods 353 are bolted onto each lifting rod. The threaded cylinder 3531 is threadedly engaged with the threaded rod 3511. A side plate 3532 is fixed to the lifting rod 353. The side plate 3532 has a sliding groove, and a first mounting block 3533 is bolted to the side plate 3532. A first roller 3534 is mounted on the first mounting block 3533. A second mounting block 3535 is also bolted to the side plate 3532. A second roller 3536 is mounted on the second mounting block 3535. Two sets of tensioning bolts 3537 are threaded and tightened onto the second mounting block 3535. The first roller 3534 and the second roller 3536 are in contact with the fixed frame 35. Their function is to run the third motor 3522 to rotate the four sets of threaded rods 3511, thereby raising and lowering the lifting rod 353, which facilitates the fitting of the nozzle 3636 to the correct height. The arrangement of the first roller 3534 and the second roller 3536 can improve the stability of the lifting rod 353 when it is raised and lowered.

[0063] Example 2, based on Example 1,

[0064] Two sets of welding seats 354 are fixed to the lower ends of the two sets of lifting rods 353. A cylinder 3541 is fixed on the welding seat 354. A buffer rod 3542 is installed inside the cylinder 3541. A spring is installed on the buffer rod 3542. A fixed seat 3543 is fixed to the lower end of the four sets of buffer rods 3542. A frame 36 is fixed to the lower end of the fixed seat 3543. Its function is: when the nozzle 3636 descends, if the nozzle 3636 collides with the protective shell 223 between the two sets of clamping arms 3362, the spring on the buffer rod 3542 can buffer and protect the nozzle 3636.

[0065] Example 3, based on Examples 1 and 2,

[0066] A drive rod 361 is mounted on frame 36. A motor frame 362 is bolted to frame 36, and a fourth motor 3621 is bolted to motor frame 362. The fourth motor 3621 drives the drive rod 361 to rotate via a belt. Two sets of connecting wheels are mounted on frame 36. A first transmission belt 3611 connects the drive rod 361 to the two sets of connecting wheels. Two sets of first sliding rods 363 are fixed on frame 36. Sliding blocks 3631 slide on the first sliding rods 363. The upper ends of the two sets of sliding blocks 3631 are connected to the two sets of first transmission belts 3611 by screws. A second sliding rod 3634 is installed between the two sets of sliding blocks 3631, and a second transmission belt 363 is installed between the two sets of sliding blocks 3631. 3. A fifth motor 3632 is bolted to the lower end of the sliding block 3631 near the right end of the second sliding rod 3634. The fifth motor 3632 drives the second transmission belt 3633. Movable seats 3635 slide on the two sets of second sliding rods 3634. The movable seats 3635 are connected to the second transmission belt 3633 by screws. The nozzles 3636 are installed on the movable seats 3635. The nozzles 3636 are connected to the external graphene slurry supply device. Their function is: to run the fourth motor 3621 to rotate the active rod 361, which drives the first transmission belt 3611 to move, thus moving the nozzles 3636 left and right; and to run the fifth motor 3632 to run the second transmission belt 3633, thus moving the nozzles 3636 back and forth.

[0067] This invention discloses a method for manufacturing a vacuum circuit breaker with high heat dissipation, comprising the following steps:

[0068] 1) By controlling the extension of the second hydraulic rod 3371, the conical head 3372 pushes the two sets of clamping arms 3362, and the two sets of clamping arms 3362 clamp the protective shell 223.

[0069] 2) Activate motor 332 to move the protective shell 223 to the left, spraying graphene slurry onto the protective shell 223 through nozzle 3636. Activate motor 3522 to adjust the height of nozzle 3636 and control hydraulic rod 334 to extend and retract to adjust the tilt angle of the protective shell 223 between the two sets of clamping arms 3362. Activate motor 3351 to rotate the protective shell 223. The mass percentage composition of the graphene slurry is: solvent 70%–95%, graphene 4.5%–27%, dispersant 0.5%–3%.

[0070] 3) Activate motor 332 to move the protective shell 223 coated with graphene slurry to the right, so that it moves to the lower end of the baking oven. The baking oven emits a high temperature of 50℃~300℃ to bake the protective shell 223, so that the graphene slurry on the protective shell 223 dries quickly.

[0071] The working principle of this embodiment is as follows: During use, by controlling the extension of the second hydraulic rod 3371, the conical head 3372 pushes the two sets of clamping arms 3362, which clamp the protective shell 223. The first motor 332 moves the protective shell 223 to the left, spraying graphene slurry onto the protective shell 223 through the nozzle 3636. The fourth motor 3621 rotates the drive rod 361, which drives the first transmission belt 3611, enabling the nozzle 3636 to move left and right. The fifth motor 3632 moves the second transmission belt 3633, achieving spraying... The head 3636 moves back and forth, and the third motor 3522 adjusts the height of the nozzle 3636. The first hydraulic rod 334 is controlled to extend and retract to adjust the tilt angle of the protective shell 223 between the two sets of clamping arms 3362. The second motor 3351 rotates the protective shell 223, and the first motor 332 moves the protective shell 223 coated with graphene slurry to the right, so that it moves to the lower end of the baking oven. The baking oven emits a high temperature of 50℃~300℃ to bake the protective shell 223, so that the graphene slurry on the protective shell 223 dries quickly. Then it can be assembled.

[0072] The following points should be noted in this article:

[0073] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0074] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0075] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A vacuum circuit breaker with high heat dissipation, comprising: Base frame; characterized in that, A partition plate is bolted to the base frame. Side seats are bolted to the left and right sides of the upper part of the partition plate. Reinforcing plates are screwed into the side seats. Fixing plates are bolted to the front and rear ends of both sets of side seats. Mounting posts are mounted on the fixing plates, and connecting plates are mounted on the mounting posts. The connecting plates are rotatably connected to the mounting posts. Torsion springs are mounted on the mounting posts, with their lower ends hooked onto the connecting plates. Insertion rods are fixed to the fixing plates, and the upper ends of the torsion springs are inserted into the insertion holes on the insertion rods. A base is mounted above the partition plate, fixed to four sets of connecting plates. A circuit breaker body is fixed to the upper end of the base, and an isolation plate is fixed to the rear end of the circuit breaker body. A grounding plate is bolted to the upper end of the base, and bolts are used to mount… There is a support plate, the upper end of which is bolted to the isolation plate. Three sets of protective shells are bolted to the rear end of the grounding plate. Baffles are fixed on both sides of the three sets of protective shells. A control plate is rotatably connected to the protective shell. The front end of the control plate is connected to the closing mechanism of the circuit breaker body. A connecting platform is provided on the protective shell, and a heat dissipation plate is provided on the protective shell. The protective shell is covered with a graphene layer and is made of aluminum. A moving contact plate is bolted to the connecting platform. Three sets of top seats are bolted to the support plate. A stationary contact plate is bolted to the top seats. An arc extinguisher No. 1 is installed between the stationary contact plate and the moving contact plate. A second arc extinguisher No. 2 is installed on the control plate. The upper end of the second arc extinguisher is in contact with the moving contact plate.

2. The manufacturing method of a high heat dissipation vacuum circuit breaker according to claim 1, comprising: Operation box; characterized in that, The control box has through slots on both the left and right sides, with rivets securing the shielding curtains to the slots. A door panel is mounted on the front of the control box via hinges, and two sets of observation windows are provided on the door panel. A rail frame is bolted to the inside of the control box, with rail rods bolted to the upper and lower ends of the rail frame. A toothed plate is fixed on the rail frame, and a movable seat is mounted on the rail frame. Rollers are mounted on the movable seat and roll on the rail rods on the rail frame. A No. 1 motor is bolted to the movable seat, and a gear is mounted on the output shaft of the No. 1 motor, which meshes with the toothed plate on the rail frame.

3. The manufacturing method of a high-heat-dissipation vacuum circuit breaker according to claim 2, characterized in that, A support plate is mounted on the upper end of the movable base, and the support plate is rotatably connected to the upper end of the movable base. A hydraulic rod is rotatably connected to the movable base, and the telescopic end of the hydraulic rod is rotatably connected to the lower end of the support plate. A mounting base is fixed on the upper end of the support plate, and a second motor is mounted on the lower end of the mounting base by bolts. A turntable is mounted on the output shaft of the second motor, and two sets of ball bearing seats are mounted on the upper end of the mounting base by bolts. Ball bearing seats contain balls, and the balls are in contact with the bottom surface of the turntable.

4. The manufacturing method of a high-heat-dissipation vacuum circuit breaker according to claim 3, characterized in that, A U-shaped seat is fixed on the turntable, and a fixed rod is installed on the U-shaped seat. Two sets of clamping arms are rotatably connected to the fixed rod. The clamping arms are provided with sliding grooves, and two sets of fixed columns are fixed on the U-shaped seat. A round rod is fixed between the two sets of fixed columns. The round rod passes through the sliding grooves on the two sets of clamping arms, and a spring is installed on the round rod. The spring is located between the clamping arm and the fixed column. A rotating wheel is installed on the clamping arm. A second hydraulic rod is installed on the U-shaped seat by bolts. A conical head is fixed on the piston rod of the second hydraulic rod. The conical head is located between the rollers on the two sets of clamping arms. The two sets of clamping arms are used to clamp the protective shell.

5. The manufacturing method of a high-heat-dissipation vacuum circuit breaker according to claim 2, characterized in that, The control box has two sets of load-bearing rods fixed inside, and two sets of crossbeams fixed on the two sets of load-bearing rods. Hanging plates are installed on the two sets of crossbeams by bolts. The hanging plates are provided with mounting grooves. A top cover is installed between the two sets of hanging plates. The front and rear ends of the top cover are installed in the mounting grooves on the hanging plates. A heat insulation cover is fixed inside the top cover. A mounting shell is fixed at the lower end of the top cover. A baking device is installed inside the mounting shell.

6. The manufacturing method of a high-heat-dissipation vacuum circuit breaker according to claim 5, characterized in that, The control box is equipped with a fixed frame installed inside by bolts. Two sets of No. 1 plates are fixed to the upper end of the fixed frame, and a No. 2 plate is also fixed to the fixed frame. Two sets of threaded rods are installed between the two sets of No. 1 plates and the lower end of the fixed frame. A worm gear box is installed at the upper end of the threaded rod. The worm gear box is installed on the No. 1 plate by bolts, and the two sets of worm gear boxes on the two sets of No. 1 plates are connected by a transmission rod. A gearbox is installed on the No. 2 plate by bolts, and a No. 3 motor is installed on the gearbox by bolts. Gearboxes are installed on both sets of No. 1 plates, and the gearboxes are connected to the worm gear boxes. The two sets of gearboxes are connected to the gearbox.

7. The manufacturing method of a high-heat-dissipation vacuum circuit breaker according to claim 6, characterized in that, A lifting rod is installed on the threaded rod. There are two sets of lifting rods. Two sets of threaded cylinders are installed on the lifting rods by bolts. The threaded cylinders are threadedly engaged with the threaded rods. A side plate is fixed on the lifting rod. A sliding groove is provided on the side plate. A first mounting block is installed on the side plate by bolts. A first roller is installed on the first mounting block. A second mounting block is also installed on the side plate by bolts. A second roller is installed on the second mounting block. Two sets of tensioning bolts are threaded onto the side plate. The two sets of tensioning bolts are pressed against the second mounting block. The first roller and the second roller are in contact with the fixed frame.

8. The manufacturing method of a high heat dissipation vacuum circuit breaker according to claim 7, characterized in that, Two sets of welding seats are fixed to the lower ends of the two sets of lifting rods. A cylinder is fixed on the welding seat, and a buffer rod is installed inside the cylinder. A spring is installed on the buffer rod, and a fixed seat is fixed to the lower end of the four sets of buffer rods. A frame is fixed to the lower end of the fixed seat.

9. The manufacturing method of a high heat dissipation vacuum circuit breaker according to claim 8, characterized in that, An active rod is mounted on the frame, and a motor frame is bolted to the frame. A fourth motor is bolted to the motor frame, and the fourth motor drives the active rod to rotate via a belt. Two sets of connecting wheels are mounted on the frame, and a first transmission belt connects the active rod to the two sets of connecting wheels. Two sets of first sliding rods are fixed on the frame, and sliding blocks slide on the first sliding rods. The upper ends of the two sets of sliding blocks are connected to the two sets of first transmission belts by screws. A second sliding rod is mounted between the two sets of sliding blocks, and a second transmission belt is also mounted between the two sets of sliding blocks. A fifth motor is bolted to the lower end of the sliding block near the right end of the second sliding rod, and the fifth motor drives the second transmission belt. Movable seats slide on the two sets of second sliding rods, and the movable seats are connected to the second transmission belt by screws. A nozzle is mounted on the movable seat, and the nozzle is connected to an external graphene slurry supply device.

10. A method for manufacturing a high-heat-dissipation vacuum circuit breaker according to claims 2-9, comprising the following steps: 1) By controlling the extension of the second hydraulic rod, the conical head pushes the two sets of clamping arms, and the two sets of clamping arms clamp the protective shell; 2) Activate motor 1 to move the protective shell to the left, spraying graphene slurry onto the protective shell through the nozzle. Activate motor 3 to adjust the nozzle height and control the extension and retraction of hydraulic rod 1 to adjust the tilt angle of the protective shell between the two sets of clamping arms. Activate motor 2 to rotate the protective shell. The mass percentage composition of the graphene slurry is: solvent 70%–95%, graphene 4.5%–27%, dispersant 0.5%–3%. 3) Activate motor number one to move the protective shell coated with graphene slurry to the right, so that it moves to the lower end of the baking oven. The baking oven emits a high temperature of 50℃~300℃ to bake the protective shell, so that the graphene slurry on the protective shell dries quickly.

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