A roasting flow splitting device

Abstract

The application provides a roasting shunt device, comprising a main frame; a cathode shunt plate assembly is fixedly installed on the main frame at a front end position, an anode shunt plate assembly is fixedly installed on the main frame at a rear end position, and a shunt switch is installed at a position below the middle part of the main frame. The application can quickly and accurately control the current size flowing through the electrolytic cell, so that the electrolytic cell can be started according to the set roasting temperature curve. During the whole roasting process, the shunt plate does not need to be manually disassembled, thereby ensuring the quality of the roasting start, greatly prolonging the service life of the electrolytic cell, and the transfer, installation and maintenance process of the device is simple and reliable, the safety of the operating personnel is better ensured while the production efficiency is improved; the device is convenient for serial customization, and the required shunt flow for roasting of different electrolytic cells can be adapted by increasing or decreasing the number of shunt plates and the number of poles of the shunt switch.

Description

Technical Field

[0001] The invention relates to a roasting and diverting device, belonging to the technical field of metallurgy. Background Art

[0002] The roasting effect in the aluminum electrolysis production process directly affects the service life and energy consumption of aluminum electrolytic cells. Currently, coke roasting is the predominant roasting startup method for aluminum electrolytic cells in China. This method generally controls the roasting temperature and heating rate by controlling the current flowing through the coke bed, anode carbon blocks, and cathode carbon blocks in the electrolytic cell. Aluminum plants often use a method of directly crimping steel sheets to the busbars, adjusting the current through the shunt plates by manually increasing or decreasing the number of steel plates or using manual air cooling. This method has the disadvantages of requiring manual assembly and disassembly of the shunt plates, and the risk of safety accidents such as sparks and high-temperature burns during loaded operation. Furthermore, the system has a low degree of automation, high labor intensity, and difficulty accurately controlling the shunt flow rate. The uncontrollable roasting current leads to an unstable roasting process, making it difficult to achieve the desired control effect. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides a roasting shunt device, which can quickly and accurately control the current flowing through the electrolytic cell, so that the electrolytic cell can be started according to the set roasting temperature curve. During the entire roasting process, there is no need to manually disassemble and assemble the shunt piece to adjust the current, thereby ensuring the quality of the roasting startup and greatly extending the service life of the electrolytic cell. In addition, the transportation, installation and maintenance processes are simple and reliable, which improves production efficiency and can better ensure the safety of operators.

[0004] The present invention is achieved through the following technical solutions.

[0005] The present invention provides a roasting shunt device, comprising a main frame; a cathode shunt plate assembly is fixedly installed on the front end position of the main frame, an anode shunt plate assembly is fixedly installed on the rear end position of the main frame, and a shunt switch is installed at the lower middle part of the main frame; the anode shunt plate assembly and the cathode shunt plate assembly are both multi-way connection plates and the number of shunts is consistent, and the shunt switch performs multi-pole control on the multi-way connection plates of the anode shunt plate assembly and the cathode shunt plate assembly, and the number of controlled poles is consistent with the number of shunts.

[0006] The anode shunt plate assembly and the cathode shunt plate assembly are both four-way connection plates, and the shunt switch is a four-pole independent control on and off.

[0007] A fan is installed between the anode shunt plate assembly and the cathode shunt plate assembly, with both ends of the fan facing the anode shunt plate assembly and the cathode shunt plate assembly. The front and rear ends of the fan are both equipped with air duct guard plates to form an air duct, and the shunt switch is installed below the fan.

[0008] The anode shunt plate assembly consists of a horizontal busbar crimping plate, an anode shunt plate, and a transition plate that are connected and fixed in sequence. Multiple anode shunt plates are connected in parallel on a horizontal busbar crimping plate to form a multi-way connection plate. A transition plate is fixed on the front end of each anode shunt plate; the transition plate is connected and fixed to the main frame through a high-temperature insulating plate.

[0009] The cathode shunt plate assembly consists of a transition plate, a cathode shunt plate, and a column busbar crimping plate that are connected and fixed in sequence. The rear ends of multiple parallel cathode shunt plates are each connected and fixed with a transition plate for installation and fixation. The column busbar crimping plate connected to the front end of the cathode shunt plate is evenly divided to the left and right and bent into a bow shape.

[0010] The plurality of parallel cathode shunt sheets are spaced evenly apart, and the busbar crimping plates on the same side corresponding to the front ends of the cathode shunt sheets are spaced evenly apart.

[0011] The shunt switch is composed of multiple parallel switch assemblies, each of which is composed of a static main contact, a static arc contact plate, a moving arc contact, and a moving main contact. The moving arc contact and the moving main contact are rotatably mounted on a support plate, and the static arc contact plate and the static main contact are fixedly mounted on a transfer busbar; an operating rod is fixedly mounted on a moving contact assembly consisting of the moving arc contact and the moving main contact; an opening stop and a closing stop are fixed to the support plate, and enable the moving contact assembly to rotate between the opening stop and the closing stop in the shunt switch.

[0012] The operating rod is provided with a locking buckle, and a tension spring is provided for locking and unlocking the locking buckle.

[0013] The moving contact assembly and the static main contact are matched with a trapezoidal interface; the moving arc contact is located at the upper end of the moving main contact, and the moving arc contact is longer than the moving main contact so that the moving arc contact and the moving main contact can be closed first and then opened; multiple moving main contacts are riveted with contact finger plates, and contact finger clamps are fixed to the support plate, and spring sheets are installed between the contact finger plates and the contact finger clamps.

[0014] There is a support at the bottom of the main frame, a support frame is foldably installed on the support, and a height-adjustable support foot is installed at the bottom of the support frame; a switch movable cover is installed at the position on the side of the shunt switch below the middle of the main frame; and multiple support feet are also installed at the bottom of the main frame.

[0015] The beneficial effects of the present invention include the ability to quickly and accurately control the current flowing through the electrolytic cell, enabling it to complete startup according to a set firing temperature curve. The entire firing process eliminates the need for manual disassembly of the shunt plates, thereby ensuring the quality of the firing startup and significantly extending the service life of the electrolytic cell. Furthermore, the device's transportation, installation, and maintenance processes are simple and reliable, improving production efficiency while also ensuring operator safety. The device facilitates serial customization, and the required shunt flow rates for different electrolytic cell firings can be adapted by increasing or decreasing the number of shunt plates and the number of shunt switch poles. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of at least one embodiment of the present invention;

[0017] Figure 2 yes Figure 1 Schematic diagram of the structure in running state;

[0018] Figure 3 yes Figure 1 Schematic diagram of the structure of the shunt switch;

[0019] Figure 4 yes Figure 1 Schematic diagram of the structure of the cathode shunt plate;

[0020] Figure 5 yes Figure 1 Schematic diagram of the structure of the anode shunt.

[0021] In the figure: 1- anode shunt plate assembly, 2- main frame, 3- switch movable cover, 4- fan, 5- air duct guard plate, 6- support leg, 7- high temperature insulation tube, 8- cathode shunt plate assembly, 9- electrolytic cell horizontal busbar, 10- first special fixture, 11- shunt switch, 12- support, 13- support frame, 14- support leg, 15- electrolytic cell column busbar, 16- second special fixture, 17- support plate, 18- moving arc contact plate, 19 -Closed position stop, 20-moving arc contact, 21-transfer busbar, 22-static arc contact plate, 23-static main contact, 24-contact finger plate, 25-moving main contact, 26-locking buckle, 27-spring sheet, 28-tension spring, 29-operating lever, 30-contact finger clamp, 31-opening position stop, 32-busbar, 33-transition plate, 34-cathode shunt plate, 35-column busbar crimping plate, 36-horizontal busbar crimping plate, 37-anode shunt plate. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0023] The first embodiment of the present invention relates to Figures 1 to 5 A roasting shunt device shown includes a main frame 2; a cathode shunt plate assembly 8 is fixedly installed at the front end position of the main frame 2, an anode shunt plate assembly 1 is fixedly installed at the rear end position of the main frame 2, and a shunt switch 11 is installed at the lower middle part of the main frame 2; the anode shunt plate assembly 1 and the cathode shunt plate assembly 8 are both multi-way connection plates and the number of shunts is the same, and the shunt switch 11 performs multi-pole control on the multi-way connection plates of the anode shunt plate assembly 1 and the cathode shunt plate assembly 8, and the number of controlled poles is consistent with the number of shunts.

[0024] Generally, the main frame 2 components are welded together by stainless steel profiles.

[0025] The second embodiment of the present invention is substantially the same as the first embodiment, mainly in that the anode shunt plate assembly 1 and the cathode shunt plate assembly 8 are both four-way connection plates, and the shunt switch 11 is a four-pole independent on-off control.

[0026] Furthermore, there is a support 12 at the bottom of the main frame 2, and a support frame 13 is foldably installed on the support 12, and a support foot 14 with adjustable height is installed at the bottom of the support frame 13; a switch movable cover 3 is installed at the position on the side of the shunt switch 11 in the lower middle part of the main frame 2; and a plurality of support feet 6 are also installed at the bottom of the main frame 2.

[0027] Generally, the switch movable cover plate 3 is installed on both sides, and the switch movable cover plate 3 is provided with a hydraulic pull rod to facilitate manual operation of the diverter switch.

[0028] Therefore, the upper part of the support frame 13 is equipped with a support 12 that can be translated and rotated to adjust the front and rear position of the diverter device, and the lower part is equipped with a support foot 14 with adjustable height to adjust the upper and lower positions of the diverter device, so that the diverter device can adapt to the size differences of different electrolytic cells when installed.

[0029] The third embodiment of the present invention is roughly the same as the first embodiment, mainly in that a fan 4 is installed between the anode diverter assembly 1 and the cathode diverter assembly 8, the two ends of the fan 4 are facing the anode diverter assembly 1 and the cathode diverter assembly 8, the front and rear ends of the fan 4 are installed with air duct guard plates 5 to form an air duct, and the diverter switch 11 is installed below the fan 4.

[0030] Therefore, the fan 4 is installed on the main frame 2 and is located between the anode shunt plate assembly 1 and the cathode shunt plate assembly 8. The wind speed can be adjusted according to the shunt plate temperature to effectively reduce the conductor temperature.

[0031] Furthermore, the anode shunt plate assembly 1 is composed of a horizontal busbar crimping plate 36, an anode shunt plate 37, and a transition plate 33 that are connected and fixed in sequence. Multiple anode shunt plates 37 are connected in parallel on a horizontal busbar crimping plate 36 to form a multi-way connection plate, and a transition plate 33 is fixed at the front end of each anode shunt plate 37; the transition plate 33 is connected and fixed to the main frame 2 through a high-temperature insulating plate.

[0032] Generally, the horizontal busbar crimping plate 36, the anode shunt plate 37 and the transition plate 33 are welded together, one end of all the anode shunt plates 37 are welded to the horizontal busbar crimping plate 36 at equal intervals, and the other ends of every two anode shunt plates 37 are welded to both sides of a transition plate 33 to form a pole, and each pole is isolated and fixed with a high-temperature insulating plate.

[0033] Furthermore, the cathode shunt plate assembly 8 is composed of a transition plate 33, a cathode shunt plate 34, and a column busbar crimping plate 35 that are connected and fixed in sequence. The rear ends of multiple parallel cathode shunt plates 34 are each connected and fixed with a transition plate 33 for installation and fixation, and the column busbar crimping plate 35 connected to the front end of the cathode shunt plate 34 is evenly divided to the left and right and bent into a bow shape.

[0034] Furthermore, the multiple parallel cathode shunt pieces 34 are spaced equally apart, and the busbar crimping plates 35 on the same side corresponding to the front ends of the cathode shunt pieces 34 are spaced equally apart.

[0035] Generally, the column busbar crimping plate 35, the cathode shunt plate 34 and the transition plate 33 are welded together, and one end of all the cathode shunt plates 34 are welded to the column busbar crimping plate 35 at equal intervals. The other ends of every two cathode shunt plates 34 are welded to both sides of a transition plate 33 to form a pole. Each pole is isolated and fixed with a high-temperature insulating tube. The cathode shunt plate assembly 8 is bent into a retractable bow shape and is divided into two groups to be clamped and installed with the electrolytic cell column busbar crimping plate 35. It can adapt to the installation of different busbar sizes and reduce the difficulty of installation.

[0036] The horizontal busbar crimping plate 36 and the column busbar crimping plate 35 are made of steel-aluminum composite material. One side of the steel is used for welding the shunt plate, and the other side of the aluminum is used for crimping the horizontal busbar of the electrolytic cell and the column busbar of the electrolytic cell; the transition plate 33 is made of copper-steel composite material. One side of the steel is used for welding the shunt plate, and the other side of the copper is used for crimping the switch busbar.

[0037] The fourth embodiment of the present invention is roughly the same as the first embodiment, mainly in that the shunt switch 11 is composed of multiple parallel switch assemblies, each of which is composed of a static main contact 23, a static arc contact plate 22, a moving arc contact 20, and a moving main contact 25. The moving arc contact 20 and the moving main contact 25 are rotatably mounted on the support plate 17, and the static arc contact plate 22 and the static main contact 23 are fixedly mounted on the transfer busbar 21; an operating rod 29 is fixedly mounted on the moving contact assembly consisting of the moving arc contact 20 and the moving main contact 25; an opening stop 31 and a closing stop 19 are fixed to the support plate 17, and the moving contact assembly rotates between the opening stop 31 and the closing stop 19 in the shunt switch 11.

[0038] During implementation, the transfer busbar 21 of each pole (ie each path) of the shunt switch 11 is respectively connected to the transition plates 33 of the anode shunt sheet assembly 1 and the cathode shunt sheet assembly 8 with bolts and crimping to form a series circuit.

[0039] Furthermore, a locking buckle 26 is mounted on the operating rod 29 , and a tension spring 28 is provided for locking and unlocking the locking buckle 26 .

[0040] Furthermore, a trapezoidal interface is formed between the moving contact assembly and the static main contact 23; the moving arc contact 20 is located at the upper end of the moving main contact 25, and the moving arc contact 20 is longer than the moving main contact 25 so that the moving arc contact 20 and the moving main contact 25 can be closed first and then separated; multiple moving main contacts 25 are riveted with contact finger plates 24, and a contact finger clamp 30 is fixed to the support plate 17, and a spring sheet 27 is installed between the contact finger plate 24 and the contact finger clamp 30.

[0041] As is easy to understand, the trapezoidal interface can reduce resistance to closing. The finger plate 24, finger clamp 30, and spring plate 27 are configured to provide contact pressure for the contacts, reducing contact resistance. The moving main contact 25 carries the rated current, and the moving arc contact 20 and the static arc contact plate 22 withstand connecting and disconnecting load arcs. The operating lever 29 is fixedly mounted on the moving contact assembly. When operating each pole switch, the tension spring 28 first unlocks the locking clip 26, and then pushes the operating lever 29 to rotate the moving contact assembly around the rotation axis within the open position stop 31 and the closed position stop 32. The current passing through the shunt plate can be adjusted by increasing or decreasing the number of closed poles of the shunt switch.

[0042] In the above embodiment, when storing or transporting, the support frame 13 is flipped 90 degrees and hung under the support assembly, and supported horizontally by the four legs 6 of the support assembly; when the shunt device is put into operation, first, the shunt switch 11 is operated to the open position to cut off the conductor loop to avoid arcing and sparking during installation. Then, the whole is hoisted to the working position of the electrolytic cell, and the support frame 13 is placed on the groove edge plate to adjust the front and rear position and height. The horizontal busbar crimping plate 36 and the column busbar crimping plate 35 are respectively crimped with the electrolytic cell horizontal busbar 9 and the electrolytic cell column 15 with the first special clamp 10 and the second special clamp 16 to complete the installation; during operation, it is only necessary to increase or decrease the number of poles of the shunt switch 11 according to the set current value; when the shunt device ends operation, the shunt switch 11 is also operated to the open position, and then the second special clamp 16 is removed and stored in the support frame 13, and the whole is hoisted away from the working position to complete the disassembly.

[0043] Therefore, the present invention has the characteristics of being able to connect and disconnect large currents under load, low temperature rise, small size, high temperature resistance, and easy operation and maintenance. The structure is easy to customize in series, and the number of poles can be increased or decreased according to the current carrying size of the shunt. In addition to manual operation, automatic operation can also be achieved by adding a motor or cylinder.

Claims

1. A roasting and diverting device, comprising a main frame (2), characterized in that: A cathode shunt plate assembly (8) is fixedly mounted on the main frame (2) at the front end, an anode shunt plate assembly (1) is fixedly mounted on the main frame (2) at the rear end, and a shunt switch (11) is mounted at the lower middle portion of the main frame (2); the anode shunt plate assembly (1) and the cathode shunt plate assembly (8) are both multi-way connection plates with the same number of shunts, and the shunt switch (11) performs multi-pole control on the multi-way connection plates of the anode shunt plate assembly (1) and the cathode shunt plate assembly (8), and the number of controlled poles is consistent with the number of shunts; a fan (4) is mounted between the anode shunt plate assembly (1) and the cathode shunt plate assembly (8), with both ends of the fan (4) facing the anode shunt plate assembly (1) and the cathode shunt plate assembly (8), and air duct guard plates (5) are mounted at the front and rear ends of the fan (4) to form an air duct, and the shunt switch (11) is mounted below the fan (4); the shunt switch (11) is composed of multiple parallel switch assemblies, each switch The switch components are composed of a static main contact (23), a static arc contact plate (22), a moving arc contact (20), and a moving main contact (25). The moving arc contact (20) and the moving main contact (25) are rotatably mounted on the support plate (17), and the static arc contact plate (22) and the static main contact (23) are fixedly mounted on the transfer busbar (21); an operating rod (29) is fixedly mounted on the moving contact component composed of the moving arc contact (20) and the moving main contact (25); and a split stop (3 1) and the closing stopper (19) are fixed to the support plate (17), and the moving contact assembly rotates between the opening stopper (31) and the closing stopper (19) in the shunt switch (11); the moving contact assembly and the static main contact (23) are matched with a trapezoidal interface; the moving arc contact (20) is located at the upper end of the moving main contact (25), and the moving arc contact (20) is longer than the moving main contact (25) so that the moving arc contact (20) and the moving main contact (25) can be closed first and then opened; A plurality of moving main contacts (25) are riveted with a finger plate (24), a finger clamping plate (30) is fixed to the support plate (17), and a spring sheet (27) is installed between the finger plate (24) and the finger clamping plate (30).

2. The roasting and diverting device according to claim 1, wherein: The anode shunt plate assembly (1) and the cathode shunt plate assembly (8) are both four-way connection plates, and the shunt switch (11) is a four-pole independent on-off control system.

3. The roasting and diverting device according to claim 1, wherein: The anode shunt plate assembly (1) is composed of a horizontal busbar crimping plate (36), an anode shunt plate (37), and a transition plate (33) that are connected and fixed in sequence. A plurality of anode shunt plates (37) are connected in parallel to a horizontal busbar crimping plate (36) to form a multi-way connection plate. A transition plate (33) is fixed to the front end of each anode shunt plate (37); the transition plate (33) is connected and fixed to the main frame (2) via a high-temperature insulating plate.

4. The roasting and diverting device according to claim 1, wherein: The cathode shunt piece assembly (8) is composed of a transition plate (33), a cathode shunt piece (34), and a column busbar pressing plate (35) which are connected and fixed in sequence. The rear ends of the plurality of parallel cathode shunt pieces (34) are each connected and fixed to a transition plate (33) for installation and fixation. The column busbar pressing plate (35) connected to the front end of the cathode shunt piece (34) is evenly divided to the left and right and bent into a bow shape.

5. The roasting and diverting device according to claim 4, characterized in that: The plurality of parallel cathode shunt sheets (34) are spaced evenly apart, and the same-side column busbar crimping plates (35) corresponding to the front ends of the cathode shunt sheets (34) are spaced evenly apart.

6. The roasting and diverting device according to claim 1, wherein: The operating rod (29) is provided with a locking buckle (26), and a tension spring (28) is provided for locking and unlocking the locking buckle (26).

7. The roasting and diverting device according to claim 1, wherein: The main frame (2) has a support (12) at the bottom, a support frame (13) is foldably mounted on the support (12), and a height-adjustable support foot (14) is mounted at the bottom of the support frame (13); a switch movable cover (3) is mounted at a position on the side of the shunt switch (11) below the middle of the main frame (2); and a plurality of support feet (6) are also mounted at the bottom of the main frame (2).

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