A device for a set of variable voltage rectifier power supply equipment to supply power to two graphitization furnaces in a one-to-two mode

Abstract

The present invention belongs to the technical field of power supply devices, especially a device for a step-down rectifier power supply equipment to supply power to two graphitization furnaces in a one-to-two mode. Aiming at the problems of existing power supply equipment that can only supply power to a single series-connected graphitization furnace individually, with large equipment investment, low production efficiency and equipment utilization rate, high capacity cost and high operation cost, the following solution is now proposed. It includes a graphitization workshop and a plurality of graphitization furnaces located in the graphitization workshop. The two ends of the graphitization furnace are respectively provided with a furnace head conductive positive electrode and a furnace head conductive negative electrode. A rectification room is arranged on one side of the graphitization workshop. In the present invention, through the cooperation of the conductive copper plate, the furnace head conductive negative electrode, the furnace head conductive positive electrode and the step-down rectification device, electric energy can be provided for two graphitization furnaces simultaneously, and electric energy can also be provided for the two graphitization furnaces alternately, reducing a set of power supply equipment, lowering the equipment investment and the equipment operation cost, and improving the production efficiency and the equipment utilization rate.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply devices, and particularly to a device for a step-down rectifier power supply device to supply power to two graphitization furnaces in a one-to-two mode. Background Art

[0002] During the production process of graphitizing electrode baked products using series-connected graphitization furnaces in the carbon production industry, a set of step-down rectifier power supply equipment is configured to supply power to each furnace separately. The load is increased and decreased according to the load curve from low to high. After the curve is completed, the power is cut off, and then the power supply is switched to another graphitization furnace. The power supply duration for each furnace is 24 hours.

[0003] There are still some defects in the existing step-down rectifier power supply equipment during the power supply process for series-connected graphitization furnaces:

[0004] 1. A set of step-down rectifier power supply equipment can only supply power to one series-connected graphitization furnace separately, resulting in large equipment investment, low production efficiency and equipment utilization rate, high capacity cost, and high operation cost;

[0005] 2. During the long-term use of series-connected graphitization furnaces, regular maintenance is required. In the existing technology, the maintenance of series-connected graphitization furnaces is extremely inconvenient, affecting the maintenance efficiency;

[0006] 3. During the maintenance process of series-connected graphitization furnaces, due to a large amount of dust accumulated on their surfaces, it not only affects the accurate maintenance by workers, but also the dust affects the heat dissipation of the conductive electrodes at the furnace heads of series-connected graphitization furnaces.

[0007] In view of the above problems, the present invention document proposes a device for a step-down rectifier power supply device to supply power to two graphitization furnaces in a one-to-two mode. Summary of the Invention

[0008] The purpose of the present invention is to solve the disadvantages that the existing power supply equipment can only supply power to one series-connected graphitization furnace separately, the maintenance is extremely inconvenient, and a large amount of dust accumulated on its surface affects the maintenance work, and a device for a step-down rectifier power supply device to supply power to two graphitization furnaces in a one-to-two mode is proposed.

[0009] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0010] A device for a variable voltage rectifier power supply equipment to supply power to two graphitization furnaces in a one - to - two mode, including a graphitization workshop and multiple graphitization furnaces located in the graphitization workshop. At both ends of the graphitization furnace, a furnace head conductive positive electrode and a furnace head conductive negative electrode are respectively arranged. On one side of the graphitization workshop, there is a rectifier room, in which a variable voltage rectifier device and a hydraulic station are arranged. In the graphitization workshop, two power supply negative buses and two power supply positive buses are installed through cement jacking piers, and the power supply negative buses and power supply positive buses are connected to the variable voltage rectifier device;

[0011] It also includes a connection component for connecting the power supply negative bus and the power supply positive bus with the furnace head conductive negative electrode and the furnace head conductive positive electrode.

[0012] In a possible design, the connection component includes four conductive mobile cars. On the top of the conductive mobile car, two third double - shaft hydraulic cylinders are fixedly installed. The two output shafts of the two third double - shaft hydraulic cylinders are respectively fixedly installed with conductive copper plates through insulating plates, and flexible busbars are installed between the two conductive copper plates.

[0013] In a possible design, the connection component includes a moving frame slidably connected in the graphitization workshop for energizing the graphitization furnace;

[0014] The moving frame is composed of a first vertical frame and two second vertical frames, and the two second vertical frames are located on both sides of the first vertical frame. The graphitization furnaces are respectively located between the two second vertical frames and the first vertical frame. At the mutually approaching ends of the two second vertical frames, a connecting rod and a connecting beam are respectively fixed, and the connecting beam is located above the connecting rod. The mutually approaching ends of the two connecting rods and the connecting beam are respectively fixedly connected to both sides of the first vertical frame;

[0015] Two sliding plates, which are respectively slidably arranged in the two second vertical frames for overhauling the graphitization furnace;

[0016] A sliding beam, which is slidably arranged in the first vertical frame for overhauling the other side of the graphitization furnace;

[0017] On one side of each of the sliding plate and the sliding beam, a fixing plate is fixedly installed. On the top of the fixing plate fixed to the sliding plate, two second double - shaft hydraulic cylinders are fixedly installed. The two output shafts of the two second double - shaft hydraulic cylinders are respectively fixedly installed with conductive copper plates through insulating plates, and flexible busbars are installed between the two conductive copper plates. On the top of the fixing plate fixed to the sliding beam, two first double - shaft hydraulic cylinders are fixedly installed. The two output shafts of the two first double - shaft hydraulic cylinders are respectively fixedly installed with conductive copper plates through insulating plates, and flexible busbars are installed between the two conductive copper plates;

[0018] A driving structure is arranged in the first vertical frame and the second vertical frame for driving the conductive copper plate to move so that the conductive copper plate supplies power to different graphitization furnaces;

[0019] Four sets of maintenance structures, two of which are respectively located above the sliding plate, and the other two sets of maintenance structures are respectively arranged on both sides of the top of the sliding beam. The maintenance structures are used to control the lifting of the sliding plate and the sliding beam for maintaining the furnace heads at both ends of different graphitization furnaces.

[0020] Four sets of swinging structures, two of which are respectively arranged under two sliding plates, and the other two sets of swinging structures are both arranged under the sliding beam, and the maintenance structures provide power for the swinging structures.

[0021] In a possible design, the driving structure includes two guiding beams fixed to the inner wall of the top of the graphitization workshop. Rack teeth are fixed to the sides of the two guiding beams close to each other. Driving motors are fixed to the tops of the two connecting beams through frames. The output shafts of the driving motors are fixed with spur gears through couplings, and the spur gears are engaged with the rack teeth. The cooperation of the spur gears and the rack teeth can drive the connecting beams to move, and the connecting beams are slidably connected to the guiding beams.

[0022] In a possible design, the maintenance structure includes a first lead screw fixedly connected in the first vertical frame, and second lead screws are fixedly connected in both of the two second vertical frames;

[0023] It further includes a nut ring rotatably penetrating through the sliding plate. The nut ring is threadedly sleeved on the outer wall of the second lead screw. A first bevel gear is fixed to the outer wall of the nut ring. A motor box is fixed to the top of the sliding plate. A rotating motor is fixed in the motor box. The output shaft of the rotating motor rotatably penetrates through the motor box and is fixed with a rotating shaft. A second bevel gear is slidably connected to the outer wall of the rotating shaft through a sliding groove and a slider, and the second bevel gear is engaged with the first bevel gear. A rotating ring is rotatably connected to the side of the second bevel gear close to the motor box. A plurality of electric push rods are fixed to one side of the motor box. The output shafts of the plurality of electric push rods are all fixed to the rotating ring. The cooperation of the rotating ring and the electric push rods can control the movement of the second bevel gear and control the meshing state of the first bevel gear and the second bevel gear.

[0024] The top end of the pin rod is fixedly connected to the bottom end of the sliding frame by the pin rod, and the sliding frame drives the rotating shaft to rotate back and forth. A connecting block is fixed to the top side of the rotating rod, and a blower fan is fixed on one end of the connecting block, and the blower fan is tilted to a certain extent for blowing away dust on the conductive electrode of the furnace head at one end of the graphitizing furnace below.

[0025] In one possible design, a first protective frame is fixed to the top of the two sliding plates to provide a safe maintenance space for maintenance personnel. A second ladder is fixed on both sides of the two connecting rods, and the bottom end of the second ladder extends into the first protective frame, making it convenient for workers to enter the first protective frame through the second ladder.

[0026] In one possible design, a second protective frame is fixed on both sides of the top of the sliding beam, and the second protective frame is located on both sides of the first vertical frame, so as to provide a safe maintenance space for maintenance personnel. A third ladder is fixed on both sides of the two connecting rods, and the bottom end of the third ladder extends into the second protective frame, so that the staff can enter the second protective frame through the third ladder.

[0027] In a possible design, a plurality of slide rails are fixed to the top inner wall and the bottom inner wall of the graphitization plant, and the first vertical frame and the two second vertical frames are slidably connected to the top inner wall and the bottom inner wall of the graphitization plant through the slide rails.

[0028] In a possible design, a U-shaped walking bar is fixed to the bottom of each of the two connecting rods, two first ladders are fixed to the bottom inner walls of each of the two U-shaped walking bars, and the two first ladders extend to both ends of the U-shaped walking bar respectively.

[0029] Beneficial effects:

[0030] In the present invention, the second biaxial hydraulic cylinder, the first biaxial hydraulic cylinder, and the third biaxial hydraulic cylinder can drive the conductive copper plate to contact the furnace head conductive positive electrode and the furnace head conductive negative electrode. The furnace head conductive positive electrode and the furnace head conductive negative electrode cooperate to supply power to the graphitization furnace. The two graphitization furnaces can be supplied with power at the same time, and power can be supplied to the two graphitization furnaces alternately, thereby reducing one set of power supply equipment and lowering equipment investment and equipment operating costs.

[0031] In the present invention, the nut ring is threadedly sleeved on the outer wall of the second lead screw. A first bevel gear is fixed on the outer wall of the nut ring. The output shaft of the rotating motor is fixed with a rotating shaft. A second bevel gear is slidably connected to the outer wall of the rotating shaft. A plurality of electric push rods are fixed on one side of the motor box. The output shafts of the plurality of electric push rods are all slidably connected to the second bevel gear through a rotating ring. The meshing state of the second bevel gear and the first bevel gear can be controlled by the electric push rods. When maintenance is required, the rotating motor drives the sliding plate and the sliding beam to lift through the meshing of the second bevel gear and the first bevel gear. The staff can perform maintenance on the furnace head conductive electrodes at both ends of the graphitization furnace in the first protective frame and the second protective frame. The maintenance is very convenient and the safety is extremely high.

[0032] In the present invention, a pin shaft is fixed at a position deviated from the center of the circle on one side of the turntable. The U-shaped frame is slidably connected with a sliding frame. A chute is arranged in the rotating rod. A pin rod fixedly connected to the bottom end of the sliding frame is slidably connected in the chute. When the sliding plate and the sliding beam descend, the rotating shaft and the turntable can be driven to rotate. Through the cooperation of the pin shaft, the sliding frame and the pin rod, the rotating rod can be driven to rotate reciprocally. The swinging of the blower fan can blow the dust on the furnace head conductive electrode at one end of the graphitization furnace, enabling the staff to clearly observe the furnace head conductive electrode for maintenance and avoiding the influence of dust on the operation of the furnace head conductive electrode.

[0033] In the present invention, through the cooperation of the conductive copper plate, the furnace head conductive negative electrode, the furnace head conductive positive electrode and the variable voltage and rectification device, electric energy can be provided for two graphitization furnaces simultaneously, and can also provide electric energy for the two graphitization furnaces alternately, reducing a set of power supply equipment, reducing the investment of the equipment and the equipment operation cost. In addition, the graphitization furnace can be safely maintained. During the maintenance process, the dust on the furnace head conductive electrode of the graphitization furnace can be blown away, enabling the staff to clearly observe the furnace head conductive electrode for maintenance and avoiding the influence of dust on the operation of the furnace head conductive electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a three-dimensional structure schematic diagram of a device for a variable voltage and rectification power supply equipment to supply power to two graphitization furnaces in a one-to-two mode according to Embodiment 1 of the present invention;

[0035] Figure 2 It is a three-dimensional sectional structure schematic diagram of a graphitization workshop of a device for a variable voltage and rectification power supply equipment to supply power to two graphitization furnaces in a one-to-two mode according to Embodiment 1 of the present invention;

[0036] Figure 3 It is a three-dimensional structure schematic diagram of a device for a variable voltage and rectification power supply equipment to supply power to two graphitization furnaces in a one-to-two mode according to Embodiment 2 of the present invention;

[0037] Figure 4 A three-dimensional sectional structure diagram of a graphitization workshop of a device for a variable voltage rectifier power supply device provided in Embodiment 2 of the present invention to supply power to two graphitization furnaces in a one-to-two manner;

[0038] Figure 5 A three-dimensional exploded structure diagram of a connecting beam, a guiding beam, and a driving motor of a device for a variable voltage rectifier power supply device provided in Embodiment 2 of the present invention to supply power to two graphitization furnaces in a one-to-two manner;

[0039] Figure 6 For Figure 4 a schematic diagram of another perspective;

[0040] Figure 7 A three-dimensional sectional structure diagram of a sliding plate of a device for a variable voltage rectifier power supply device provided in Embodiment 2 of the present invention to supply power to two graphitization furnaces in a one-to-two manner;

[0041] Figure 8 A three-dimensional structure diagram of a sliding beam, a second protective frame, and a third ladder of a device for a variable voltage rectifier power supply device provided in Embodiment 2 of the present invention to supply power to two graphitization furnaces in a one-to-two manner;

[0042] Figure 9 A three-dimensional exploded structure diagram of a first bevel gear, a second bevel gear, and a rotating motor of a device for a variable voltage rectifier power supply device provided in Embodiment 2 of the present invention to supply power to two graphitization furnaces in a one-to-two manner;

[0043] Figure 10 A three-dimensional exploded structure diagram of a pin shaft, a sliding frame, a rotating rod, etc. of a device for a variable voltage rectifier power supply device provided in Embodiment 2 of the present invention to supply power to two graphitization furnaces in a one-to-two manner;

[0044] Figure 11 A three-dimensional exploded structure diagram of a connecting rod, a U-shaped walking railing, and a first ladder of a device for a variable voltage rectifier power supply device provided in Embodiment 2 of the present invention to supply power to two graphitization furnaces in a one-to-two manner;

[0045] Figure 12 For Figure 4 an enlarged schematic diagram of part A;

[0046] In the figure: 1. Graphitization workshop; 2. Transformer rectifier device; 3. Graphitization furnace; 4. Blower fan; 5. First vertical frame; 6. Second vertical frame; 7. Connecting rod; 8. Connecting beam; 9. Guide beam; 10. Rack; 11. Driving motor; 12. Straight gear; 13. First lead screw; 14. Power supply negative busbar; 15. Fixed plate; 16. Furnace head conductive positive electrode; 17. First double-acting hydraulic cylinder; 18. Second lead screw; 19. Power supply positive busbar; 20. Cement jacking pier; 21. Furnace head conductive negative electrode; 22. Second double-acting hydraulic cylinder; 23. U-shaped walking railing; 24. First ladder; 25. Sliding plate; 26. Sliding beam; 27. First protective frame; 28. Second ladder; 29. Second protective frame; 30. Third ladder; 31. Nut ring; 32. First bevel gear; 33. Motor box; 34. Rotating motor; 35. Rotating shaft; 36. Second bevel gear; 37. Rotating ring; 38. Electric push rod; 39. Rotating shaft; 40. Turntable; 41. U-shaped frame; 42. Cross beam; 43. Sliding frame; 44. Pin shaft; 45. Rotating rod; 46. Chute; 47. Pin rod; 48. Connecting block; 49. Third double-acting hydraulic cylinder; 50. Conductive copper plate; 51. Flexible busbar; 52. Conductive mobile car; 53. Rectifier chamber; 54. Hydraulic station. Specific embodiments

[0047] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0048] Embodiment 1

[0049] Refer to Figure 1 - Figure 2 , a device for a set of transformer rectifier power supply equipment to supply power to two graphitization furnaces in a one-to-two manner. The device mainly includes a graphitization workshop 1 and a plurality of graphitization furnaces 3 located in the graphitization workshop 1. The two ends of the graphitization furnace 3 are respectively provided with a furnace head conductive positive electrode 16 and a furnace head conductive negative electrode 21. A rectifier chamber 53 is provided on one side of the graphitization workshop 1. A transformer rectifier device 2 and a hydraulic station 54 are arranged in the rectifier chamber 53. Two power supply negative busbars 14 and two power supply positive busbars 19 are installed in the graphitization workshop 1 through cement jacking piers 20. The two power supply negative busbars 14 and the power supply positive busbars 19 are both connected to the transformer rectifier device 2.

[0050] In addition, it further includes a connection component for connecting the power supply negative busbar 14 and the power supply positive busbar 19 to the furnace head conductive negative electrode 21 and the furnace head conductive positive electrode 16. Specifically, the connection component includes four conductive moving carts 52. At the top of each conductive moving cart 52, two third double-shaft hydraulic cylinders 49 are fixedly installed. The two output shafts of these two third double-shaft hydraulic cylinders 49 are both fixedly installed with conductive copper plates 50 through insulating plates. Flexible busbars 51 are installed between the two conductive copper plates 50.

[0051] In actual operation, first, after the power supply is transformed and rectified by the transformer-rectifier device 2, electrical energy is transmitted through the power supply negative busbar 14 and the power supply positive busbar 19 respectively. Then, using the connection component, that is, the third double-shaft hydraulic cylinders 49 on the conductive moving carts 52, the output shafts are used to push the conductive copper plates 50, so that the conductive copper plates 50 are in contact and connected with the power supply negative busbar 14 and the power supply positive busbar 19. At the same time, the conductive copper plates 50 are connected by the flexible busbars 51, which can flexibly adapt to different position requirements. Finally, the conductive copper plates 50 transmit the electrical energy to the furnace head conductive negative electrode 21 and the furnace head conductive positive electrode 16, thereby supplying power to the graphitization furnace 3. Moreover, the conductive moving carts 52 can move to supply power to the next group of graphitization furnaces 3.

[0052] In this way, the function of the transformer-rectifier power supply device to supply power to two graphitization furnaces in a one-to-two mode is realized, improving the utilization rate and power supply efficiency of the device. At the same time, the design of the connection component makes the connection and disconnection of the device more flexible and convenient, improving the operability and practicality of the device.

[0053] Embodiment 2

[0054] Reference Figure 2-12 , on the basis of Embodiment 1, the improvement is as follows: The device mainly includes a graphitization workshop 1 and a plurality of graphitization furnaces 3 located in the graphitization workshop 1. The two ends of the graphitization furnace 3 are respectively provided with a furnace head conductive positive electrode 16 and a furnace head conductive negative electrode 21. A rectifier room 53 is provided on one side of the graphitization workshop 1. A transformer-rectifier device 2 and a hydraulic station 54 are arranged in the rectifier room 53. A connection component is also provided in the graphitization workshop 1 for energizing and overhauling the graphitization furnace 3.

[0055] The connection component includes a moving frame slidably connected in the graphitization workshop 1. The moving frame is composed of a first vertical frame 5 and two second vertical frames 6. And the two second vertical frames 6 are located on both sides of the first vertical frame 5. The graphitization furnaces 3 are respectively located between the two second vertical frames 6 and the first vertical frame 5. At the mutually approaching ends of the two second vertical frames 6, a connecting rod 7 and a connecting beam 8 are both fixedly installed. And the connecting beam 8 is located above the connecting rod 7. The mutually approaching ends of the two connecting rods 7 and the connecting beam 8 are respectively fixedly connected to both sides of the first vertical frame 5.

[0056] There are also two sliding plates 25 and a sliding beam 26 arranged inside the moving frame. The two sliding plates 25 are respectively slidably arranged in the two second vertical frames 6 and are used for overhauling one side of the graphitization furnace 3. The sliding beam 26 is slidably arranged in the first vertical frame 5 and is used for overhauling the other side of the graphitization furnace 3.

[0057] Fixed plates 15 are fixedly installed on one side of both the sliding plate 25 and the sliding beam 26. Two second double-shaft hydraulic cylinders 22 are fixedly installed on the top of the fixed plate 15 fixed to the sliding plate 25. Conductive copper plates 50 are fixedly installed on the two output shafts of the two second double-shaft hydraulic cylinders 22 through insulating plates. Flexible busbars 51 are installed between the two conductive copper plates 50. Two first double-shaft hydraulic cylinders 17 are fixedly installed on the top of the fixed plate 15 fixed to the sliding beam 26. Conductive copper plates 50 are fixedly installed on the two output shafts of the two first double-shaft hydraulic cylinders 17 through insulating plates. Flexible busbars 51 are installed between the two conductive copper plates 50.

[0058] Two guiding beams 9 are also fixedly installed on the inner wall of the top of the graphitization workshop 1. Rack bars 10 are fixedly installed on one side of the two guiding beams 9 close to each other. Driving motors 11 are fixedly installed on the tops of the two connecting beams 8 through frames. The output shaft of the driving motor 11 is fixedly connected with a spur gear 12 through a coupling, and the spur gear 12 meshes with the rack bar 10. The cooperation between the spur gear 12 and the rack bar 10 can drive the connecting beam 8 to move, so as to realize the lateral movement of the moving frame. Moreover, the connecting beam 8 is slidably connected with the guiding beam 9, ensuring the stability of the movement.

[0059] A first lead screw 13 is also fixedly connected inside the first vertical frame 5. Second lead screws 18 are fixedly connected inside the two second vertical frames 6. A nut ring 31 is rotatably penetrated through the sliding plate 25. The nut ring 31 is threadedly sleeved on the outer wall of the second lead screw 18. A first bevel gear 32 is fixedly installed on the outer wall of the nut ring 31. A motor box 33 is fixedly installed on the top of the sliding plate 25. A rotating motor 34 is fixedly installed inside the motor box 33. The output shaft of the rotating motor 34 rotatably penetrates through the motor box 33 and is fixedly connected with a rotating shaft 35. A second bevel gear 36 is slidably connected to the outer wall of the rotating shaft 35 through a sliding groove and a slider, and the second bevel gear 36 meshes with the first bevel gear 32. A rotating ring 37 is rotatably connected to one side of the second bevel gear 36 close to the motor box 33. A plurality of electric push rods 38 are fixedly installed on one side of the motor box 33. The output shafts of the plurality of electric push rods 38 are all fixedly connected with the rotating ring 37. Through the cooperation of the rotating ring 37 and the electric push rods 38, the movement of the second bevel gear 36 can be controlled, so as to control the meshing state between the first bevel gear 32 and the second bevel gear 36, and further realize the lifting movement of the sliding plate 25.

[0060] In actual operation, first, the power supply is transformed and rectified by the transformer-rectifier device 2, and then the electric energy is transmitted through the power supply negative busbar 14 and the power supply positive busbar 19. Next, the electric energy is transmitted to the furnace head conductive negative electrode 21 and the furnace head conductive positive electrode 16 of the graphitization furnace 3 by using the conductive copper plate 50 and the flexible busbar 51 in the connection component to supply power to the graphitization furnace 3.

[0061] When the graphitization furnace 3 needs to be overhauled, the driving motor 11 and the spur gear 12 in the driving structure can be used to drive the moving frame to move horizontally, so that the graphitization furnace 3 to be overhauled is located between the sliding plate 25 and the sliding beam 26. Then, through the cooperation of the rotating motor 34, the second bevel gear 36, the first bevel gear 32 and the nut ring 31 in the overhaul structure, the sliding plate 25 and the sliding beam 26 are driven to move up and down, so that they are close to the furnace head of the graphitization furnace 3. Finally, the overhaul equipment on the sliding plate 25 and the sliding beam 26 is used to overhaul the furnace head of the graphitization furnace 3.

[0062] The swinging structure specifically includes a U-shaped frame 41 welded to the bottom of the sliding plate 25. The bottom of the sliding plate 25 is rotatably connected to a rotating shaft 39 through a base. This rotating shaft 39 is connected to the rotating shaft 35 in the aforementioned overhaul structure through a synchronous pulley and a synchronous belt. In this way, when the rotating motor 34 of the overhaul structure works, it can drive the rotating shaft 39 to rotate together.

[0063] One end of the rotating shaft 39 extends into the U-shaped frame 41 and is fixed with a turntable 40. A pin shaft 44 is fixed at a position offset from the center of the turntable 40 on one side. A plurality of cross beams 42 are fixed in the U-shaped frame 41. The same sliding frame 43 is slidably connected to one side of these cross beams 42. The pin shaft 44 is slidably engaged with the sliding frame 43. In this way, when the turntable 40 rotates, the pin shaft 44 will drive the sliding frame 43 to reciprocate on the cross beam 42.

[0064] The bottom inner wall of the U-shaped frame 41 is rotatably connected to a rotating rod 45. A chute 46 is provided in the rotating rod 45. A pin rod 47 is slidably connected in the chute 46. The top end of the pin rod 47 is fixedly connected to the bottom end of the sliding frame 43. In this way, when the sliding frame 43 reciprocates, it will drive the rotating rod 45 to reciprocate through the pin rod 47.

[0065] One side of the top of the rotating rod 45 is fixed with a connecting block 48. One end of the connecting block 48 is fixed with a blower fan 4. The blower fan 4 is arranged at a certain inclination angle. Such a design is to blow away the dust on the conductive electrode of one end of the furnace head of the lower graphitization furnace 3. When the rotating rod 45 reciprocates, the blower fan 4 will also swing accordingly, so as to blow away the dust.

[0066] In addition, to ensure the safety of maintenance personnel, we have fixed a first protective frame 27 on the top of each of the two sliding plates 25. The first protective frame 27 provides a safe maintenance space for the maintenance personnel. At the same time, second ladders 28 are fixed on both sides of the two connecting rods 7. The bottom ends of the second ladders 28 extend into the first protective frame 27. This design facilitates the staff to enter the first protective frame 27 through the second ladders 28 for maintenance work.

[0067] Similarly, second protective frames 29 are also fixed on both sides of the top of the sliding beam 26. The second protective frames 29 are located on both sides of the first vertical frame 5 and also provide a safe maintenance space for the maintenance personnel. Third ladders 30 are also fixed on both sides of the two connecting rods 7. The bottom ends of the third ladders 30 extend into the second protective frames 29. This design facilitates the staff to enter the second protective frames 29 through the third ladders 30 for maintenance work.

[0068] To further improve the stability and safety of the device, a plurality of sliding rails are fixed on the inner walls of the top and bottom of the graphitization workshop 1. The first vertical frame 5 and the two second vertical frames 6 are slidably connected to the inner walls of the top and bottom of the graphitization workshop 1 through the sliding rails. This design makes the moving frame more stable during movement and also improves the safety of maintenance work.

[0069] Finally, U-shaped walking rails 23 are also fixed on the bottom of the two connecting rods 7. Two first ladders 24 are fixed on the inner walls of the bottom of the U-shaped walking rails 23, and the two first ladders 24 extend to both ends of the U-shaped walking rails 23 respectively. This design facilitates the staff to walk on the U-shaped walking rails 23 and carry out maintenance work.

[0070] In summary, the device realizes the automatic cleaning function of the dust at the furnace head of the graphitization furnace 3 through the swinging structure. At the same time, by setting a plurality of protective frames and ladders, a safe maintenance space and work convenience are provided for the maintenance personnel. In addition, the stability and safety of the device are further improved through the design of structures such as sliding rails.

[0071] In this application, a single rectifier-transformer device 2 can supply power to two graphitization furnaces simultaneously and can also supply power to the two graphitization furnaces alternately, reducing one set of power supply equipment and lowering the investment in equipment and the equipment operation cost. The cost reduction is as follows:

[0072] 1. One set of power supply equipment is reduced, saving about 8 million yuan in overall investment (6 million yuan for one set of rectifier-transformer power supply equipment, 800,000 yuan for civil engineering, and 1.2 million yuan for 66KV power distribution and transmission equipment).

[0073] 2. The power consumption time is saved, and the production efficiency is increased by about 37.5%. The original power supply time for 2 furnaces was 48 hours. Now the power supply time is 29 hours, and it takes 1 hour to switch the furnaces, with a total of 30 hours.

[0074] 3. Save the basic capacity fee of a set of power supply equipment. The monthly basic capacity fee of a set of power supply devices is: 35,000 KW * 22 yuan / KW = 770,000 yuan, and the annual fee is: 770,000 * 12 = 9.4 million yuan.

[0075] 4. Save 40% of the power consumption for graphitization production of 2 furnaces.

[0076] The usage method of a set of transformer-rectifier power supply equipment that supplies power to two graphitization furnaces in a one-drag-two manner includes the following steps:

[0077] S1. First, after the power supply is transformed and rectified by the transformer-rectifier device 2, the electric energy is transmitted through the power supply negative busbar 14 and the power supply positive busbar 19 respectively. Then, using the connection component, that is, the third double-shaft hydraulic cylinder 49 on the conductive moving vehicle 52, the conductive copper plate 50 is pushed through its output shaft, so that the conductive copper plate 50 is in contact and connected with the power supply negative busbar 14 and the power supply positive busbar 19. At the same time, the conductive copper plates 50 are connected by the flexible busbar 51, which can flexibly adapt to different position requirements. Finally, the conductive copper plate 50 transmits the electric energy to the furnace head conductive negative electrode 21 and the furnace head conductive positive electrode 16, thereby supplying power to the graphitization furnace 3. Therefore, power can be supplied to two graphitization furnaces 3 at the same time, enabling the two graphitization furnaces 3 to operate simultaneously. Starting from the initial power of 1 furnace, which is 9000 - 12000 KW, the load is gradually increased according to the power supply curve when the two graphitization furnaces 3 are connected in parallel. When the power consumption load approaches the rated power of the power supply equipment, which is 33000 KW, it takes about 20 hours. At this time, power supply is stopped, and the power supply of any one of the two graphitization furnaces 3 is disconnected. The transformer-rectifier device 2 supplies power to one of the graphitization furnaces 3 specifically. It takes about 4 hours to send power to the end according to the power supply curve of one furnace and then power is cut off. The power supply load line of this furnace is disconnected, and the power supply of the other graphitization furnace 3 is connected. It takes about 5 hours to send power to the end according to the power supply curve of 1 furnace. The above is a cycle period, and the power supply to other furnaces is carried out in turn;

[0078] S2. When power needs to be supplied to other furnaces, the driving motor 11 is used to drive the spur gear 12 to rotate at the same time. The spur gear 12 cooperates with the rack 10 to drive the first vertical frame 5 and the second vertical frame 6 to move horizontally. The conductive copper plate 50 can be driven by the second double-shaft hydraulic cylinder 22 and the first double-shaft hydraulic cylinder 17. The conductive copper plate 50 cooperates with the furnace head conductive positive electrode 16 and the furnace head conductive negative electrode 21 to supply power to the graphitization furnace 3. The two graphitization furnaces 3 operate simultaneously. When it is necessary to disconnect one of the graphitization furnaces 3, only the corresponding conductive copper plate 50 needs to be retracted. With this operation, the simultaneous operation of the two graphitization furnaces 3 and the alternating operation of the two graphitization furnaces 3 can be completed, reducing a set of power supply equipment and lowering the equipment investment and equipment operation cost;

[0079] S3. When maintenance is required, the staff can stand on the connecting rod 7, enter the U-shaped walking railing 23 through the round hole on the connecting rod 7, and then move to the uppermost graphitization furnace 3 through the first ladder 24 for the staff to perform maintenance;

[0080] S4. In addition, when maintenance is required for the furnace head conductive electrode of the graphitization furnace 3, the staff move to the first protective frame 27 and the second protective frame 29 through the second ladder 28 and the third ladder 30 respectively. The electric push rod 38 pushes the second bevel gear 36 to move towards the first bevel gear 32. The second bevel gear 36 meshes with the first bevel gear 32. The rotating motor 34 drives the first bevel gear 32 and the nut ring 31 to rotate through the second bevel gear 36. The nut ring 31 is threadedly connected to the first lead screw 13 and the second lead screw 18. Therefore, it can drive the sliding plate 25 and the sliding beam 26 to lift and lower. The staff perform maintenance on the furnace head conductive electrodes at both ends of the graphitization furnace 3 in the first protective frame 27 and the second protective frame 29. The maintenance is very convenient and the safety is extremely high;

[0081] S5. When the sliding plate 25 and the sliding beam 26 are lowered, the rotating shaft 35 drives the rotating shaft 39 to rotate through the synchronous pulley and the synchronous belt. The rotating shaft 39 drives the turntable 40 and the pin shaft 44 to rotate. The pin shaft 44 cooperates with the sliding frame 43 and the pin rod 47 to drive the rotating rod 45 to reciprocate. The rotating rod 45 drives the drum fan 4 to reciprocate. The swinging of the drum fan 4 can blow the dust on the furnace head conductive electrode at one end of the graphitization furnace 3, enabling the staff to clearly observe the furnace head conductive electrode for maintenance and avoiding the influence of dust on the operation of the furnace head conductive electrode.

[0082] However, as is well known to those skilled in the art, the working principles and wiring methods of the rotating motor 34, the electric push rod 38, 49, the double-axis hydraulic cylinder, the drive motor 11, and the variable voltage rectifying device 2 are common knowledge. They all belong to conventional means or well-known common sense and will not be elaborated here. Those skilled in the art can make any selection according to their needs or convenience.

[0083] The above is only the preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A device for a variable voltage rectifier power supply equipment to supply power to two graphitization furnaces in a one - to - two mode, characterized in that, It includes a graphitization workshop (1) and a plurality of graphitization furnaces (3) located inside the graphitization workshop (1). At both ends of the graphitization furnace (3), a furnace head conductive positive electrode (16) and a furnace head conductive negative electrode (21) are respectively arranged. On one side of the graphitization workshop (1), there is a rectification room (53), and a voltage transformation and rectification device (2) and a hydraulic station (54) are arranged inside the rectification room (53). Inside the graphitization workshop (1), two power supply negative busbars (14) and two power supply positive busbars (19) are installed through cement push piers (20), and the power supply negative busbar (14) and the power supply positive busbar (19) are connected to the voltage transformation and rectification device (2); It further includes a connection assembly for connecting the power supply negative busbar (14) and the power supply positive busbar (19) to the furnace head conductive negative electrode (21) and the furnace head conductive positive electrode (16); The connection assembly includes four conductive moving vehicles (52). On the top of the conductive moving vehicle (52), two third double-axis hydraulic cylinders (49) are fixedly installed. On the two output shafts of the two third double-axis hydraulic cylinders (49), conductive copper plates (50) are fixedly installed through insulating plates. Soft busbars (51) are installed between the two conductive copper plates (50).

2. The device for supplying power to two graphitization furnaces by a set of variable voltage and rectifier power supply equipment with a one-to-two configuration, characterized in that, The connection assembly includes a moving frame slidably connected inside the graphitization workshop (1) for energizing the graphitization furnace (3); The moving frame is composed of a first vertical frame (5) and two second vertical frames (6). The two second vertical frames (6) are located on both sides of the first vertical frame (5). The graphitization furnaces (3) are respectively located between the two second vertical frames (6) and the first vertical frame (5). At one end of the two second vertical frames (6) close to each other, a connecting rod (7) and a connecting beam (8) are fixed, and the connecting beam (8) is located above the connecting rod (7). One end of the two connecting rods (7) and the connecting beam (8) close to each other are respectively fixedly connected to both sides of the first vertical frame (5); Two sliding plates (25), and the two sliding plates (25) are respectively slidably arranged inside the two second vertical frames (6) for maintaining the graphitization furnace (3); A sliding beam (26) which is slidably arranged inside the first vertical frame (5) for maintaining the other side of the graphitization furnace (3); On one side of the sliding plate (25) and the sliding beam (26), a fixing plate (15) is fixedly installed. On the top of the fixing plate (15) fixed to the sliding plate (25), two second double-axis hydraulic cylinders (22) are fixedly installed. On the two output shafts of the two second double-axis hydraulic cylinders (22), conductive copper plates (50) are fixedly installed through insulating plates. Soft busbars (51) are installed between the two conductive copper plates (50). On the top of the fixing plate (15) fixed to the sliding beam (26), two first double-axis hydraulic cylinders (17) are fixedly installed. On the two output shafts of the two first double-axis hydraulic cylinders (17), conductive copper plates (50) are fixedly installed through insulating plates. Soft busbars (51) are installed between the two conductive copper plates (50); A driving structure is arranged in the first vertical frame (5) and the second vertical frame (6) and is used to drive the conductive copper plate (50) to move so that the conductive copper plate (50) supplies power to different graphitization furnaces (3). Four groups of maintenance structures, two of which are respectively located above the sliding plate (25), and the other two are respectively arranged on both sides of the top of the sliding beam (26). The maintenance structures are used to control the lifting of the sliding plate (25) and the sliding beam (26) to maintain the furnace heads at both ends of different graphitization furnaces (3). Four groups of swinging structures, two of which are respectively arranged under two sliding plates (25), and the other two are both arranged under the sliding beam (26), and the maintenance structures provide power for the swinging structures.

3. The device for supplying power to two graphitization furnaces by a set of variable voltage and rectifier power supply equipment with one driving two, characterized in that, The driving structure includes two guiding beams (9) fixed to the inner wall of the top of the graphitization workshop (1). Rack bars (10) are fixed to the sides of the two guiding beams (9) close to each other. Driving motors (11) are fixed to the tops of the two connecting beams (8) through frames. The output shafts of the driving motors (11) are fixed with spur gears (12) through couplings, and the spur gears (12) are engaged with the rack bars (10). The cooperation of the spur gears (12) and the rack bars (10) can drive the connecting beams (8) to move, and the connecting beams (8) are slidably connected to the guiding beams (9).

4. A device for supplying power to two graphitization furnaces by a set of variable voltage and rectifier power supply equipment in a one-to-two mode, characterized in that, The maintenance structure includes a first lead screw (13) fixedly connected in the first vertical frame (5), and second lead screws (18) are fixedly connected in both of the second vertical frames (6). It further includes a nut ring (31) rotatably penetrating through the sliding plate (25). The nut ring (31) is threadedly sleeved on the outer wall of the second lead screw (18). A first bevel gear (32) is fixed to the outer wall of the nut ring (31). A motor box (33) is fixed to the top of the sliding plate (25). A rotating motor (34) is fixed in the motor box (33). The output shaft of the rotating motor (34) rotatably penetrates through the motor box (33) and is fixed with a rotating shaft (35). A second bevel gear (36) is slidably connected to the outer wall of the rotating shaft (35) through a sliding groove and a slider, and the second bevel gear (36) is engaged with the first bevel gear (32). A rotating ring (37) is rotatably connected to the side of the second bevel gear (36) close to the motor box (33). A plurality of electric push rods (38) are fixed to one side of the motor box (33). The output shafts of the plurality of electric push rods (38) are all fixed to the rotating ring (37). Through the cooperation of the rotating ring (37) and the electric push rods (38), the movement of the second bevel gear (36) can be controlled, and the meshing state of the first bevel gear (32) and the second bevel gear (36) can be controlled.

5. The device for supplying power to two graphitization furnaces by a set of variable voltage and rectifier power supply equipment in a one-to-two mode, characterized in that, The swing structure includes a U-shaped frame (41) welded to the bottom of the sliding plate (25), the bottom of the sliding plate (25) is rotatably connected to a rotating shaft (39) through a base, the rotating shaft (39) and the rotating shaft (35) are connected through a synchronous wheel and a synchronous belt transmission, one end of the rotating shaft (39) extends to the U-shaped frame (41) and a turntable (40) is fixed therein, a pin (44) is fixed on one side of the turntable (40) at a position deviating from the center of the circle, a plurality of beams (42) are fixed in the U-shaped frame (41), one side of the plurality of beams (42) is slidably connected to the same sliding frame (43), and the pin (44) and the sliding frame (43) are slidably matched, and the turntable (40) is fixed by The pin shaft (44) drives the sliding frame (43) to move back and forth. The bottom inner wall of the U-shaped frame (41) is rotatably connected to a rotating rod (45). A slide groove (46) is provided in the rotating rod (45). A pin rod (47) is slidably connected in the slide groove (46). The top end of the pin rod (47) is fixedly connected to the bottom end of the sliding frame (43). The sliding frame (43) drives the rotating rod (45) to rotate back and forth through the pin rod (47). A connecting block (48) is fixed on one side of the top of the rotating rod (45). A blower fan (4) is fixed on one end of the connecting block (48). The blower fan (4) is tilted to a certain extent and is used to blow away dust on the conductive electrode of the furnace head at one end of the graphitization furnace (3) below.

6. The device for supplying power to two graphitization furnaces by a set of variable voltage and rectifier power supply equipment with a one-to-two configuration, characterized in that, A first protective frame (27) is fixed on the top of each of the two sliding plates (25) to provide a safe maintenance space for maintenance personnel. A second ladder (28) is fixed on both sides of each of the two connecting rods (7), and the bottom end of the second ladder (28) extends into the first protective frame (27), so that the staff can enter the first protective frame (27) through the second ladder (28).

7. A device for supplying power to two graphitization furnaces by a set of variable voltage rectifier power supply equipment in a one - to - two mode, characterized in that, A second protective frame (29) is fixed on both sides of the top of the sliding beam (26), and the second protective frame (29) is located on both sides of the first vertical frame (5) to provide a safe maintenance space for maintenance personnel. A third ladder (30) is fixed on both sides of the two connecting rods (7), and the bottom end of the third ladder (30) extends into the second protective frame (29), so that the staff can enter the second protective frame (29) through the third ladder (30).

8. The device for supplying power to two graphitization furnaces by a set of variable voltage and rectifier power supply equipment with one-to-two configuration, characterized in that, A plurality of slide rails are fixed to the top inner wall and the bottom inner wall of the graphitization plant (1), and the first vertical frame (5) and the two second vertical frames (6) are slidably connected to the top inner wall and the bottom inner wall of the graphitization plant (1) via the slide rails.

9. The device for supplying power to two graphitization furnaces by a set of variable voltage rectifier power supply equipment with one - to - two configuration, characterized in that, A U-shaped walking rail (23) is fixed to the bottom of each of the two connecting rods (7), and two first ladders (24) are fixed to the inner walls of the bottoms of each of the two U-shaped walking rails (23), and the two first ladders (24) extend to both ends of the U-shaped walking rail (23).

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