An off-line testing device for the upper part of an aluminium electrolytic cell

Abstract

The utility model aims at providing a kind of aluminium electrolysis cell upper part off-line testing device, including manual hydraulic fork truck, transverse connecting rod, controller, blanking air pipe, shell beating air pipe, fixed support, air inlet main pipe, it is characterized by: the fixed support vertical installation is in the fork truck leg of manual hydraulic fork truck;The transverse connecting rod is set in the middle part of fixed support;The blanking air pipe is equipped with multiple groups, and the middle part of each group blanking air pipe is fixed on the transverse connecting rod, and upper end extends to the top of fixed support;Electromagnetic valve is respectively equipped on each group blanking air pipe, and electromagnetic valve is below the transverse connecting rod;The controller is located on the transverse connecting rod, and is electrically connected with each electromagnetic valve respectively, and the opening and closing of electromagnetic valve are controlled by switch.This device can simulate the on-site ventilation condition of electrolytic cell upper part, realize the off-line detection of electrolytic cell upper part after overhaul, improve the overhaul efficiency of electrolytic cell, reduce labor intensity and risk.

Description

Technical Field

[0001] This utility model relates to the field of electrical and pneumatic technology, and in particular to an offline testing device for the upper part of an aluminum electrolysis cell. Background Technology

[0002] An electrolytic cell is a complex high-temperature, high-current industrial reactor, and its superstructure is a key platform for realizing anode operation, feeding, flue gas extraction, and process control. Overhauling the superstructure is a large-scale, complex, high-risk, and high-cost project aimed at fully restoring its structural integrity and various functions to ensure the safe, stable, efficient, and environmentally friendly operation of the electrolytic cell.

[0003] During major overhauls of electrolytic cells, issues such as the need to repair the cell shell require the upper part of the cell to be lifted off the ground for offline repairs. Currently, after the upper part of the cell is repaired, there is no corresponding cell control machine to link it, making it impossible to test whether the shell-breaking cylinder, feeding cylinder, etc., on the upper part of the cell can operate, and the repair quality cannot be verified. If the upper part of the cell fails to operate normally after being lifted back, online maintenance is required. In the harsh environment of high temperature, strong corrosion, strong electromagnetic field, and high dust, maintenance work poses certain risks and is not conducive to safe maintenance, thus increasing the difficulty and cost of maintenance and affecting the progress of major overhauls of electrolytic cells. Utility Model Content

[0004] In view of the technical problems existing in the background art, the present invention aims to provide an offline testing device for the upper part of an aluminum electrolytic cell. This device overcomes the defects of the prior art, can simulate the on-site ventilation conditions of the upper part of the electrolytic cell, and realize offline testing to see whether the shell-breaking cylinder and the feeding cylinder of the upper part of the cell can operate normally after the overhaul, thereby improving the efficiency of the overhaul of the electrolytic cell and reducing labor intensity and risk.

[0005] To solve the above problems, the technical solution of this utility model is as follows: An offline testing device for the upper part of an aluminum electrolysis cell includes a manual hydraulic forklift, a transverse connecting rod, a controller, a feeding air pipe, a shell-breaking air pipe, a fixed bracket, and an air inlet main pipe. The fixed bracket is vertically installed on the forklift legs of the manual hydraulic forklift. A transverse connecting rod is set in the middle of the fixed bracket. The feeding air pipe is provided in multiple sets, with the middle part of each set of feeding air pipes fixed on the transverse connecting rod and the upper end extending above the fixed bracket. Each set of feeding air pipes is provided with a solenoid valve, which is located below the transverse connecting rod. The controller is located on the transverse connecting rod and is electrically connected to each solenoid valve, and the opening and closing of the solenoid valves are controlled by a switch. The lower end of each set of feeding air pipes is connected to the air inlet main pipe, one end of which is closed and the other end is connected to an air source. The lower end of the shell-breaking air pipe is connected to the air inlet main pipe, and the upper end extends above the fixed bracket.

[0006] The transverse connecting rod is equipped with an L-shaped bracket, which is used to store the flexible air tube.

[0007] It also includes a fixing frame, the left and right sides of which are respectively installed on the two sets of forklift legs, and the left and right sides are consistent with the top width of the two sets of forklift legs.

[0008] The lower end of the fixed bracket is provided with a reinforcing plate that is connected to the fixed frame.

[0009] The manual hydraulic forklift includes a forklift handle, a hand pump, a hydraulic cylinder, a forklift base, a triangular support, forklift legs, forklift wheels, and a hand pump. Forklift wheels are located on both sides of the front and rear of the forklift base. A vertical shaft is mounted on the front of the forklift base via a bracket, and a caster wheel is mounted on the lower end of the vertical shaft. Two sets of forklift legs are located on the left and right sides of the forklift base. A hydraulic cylinder is mounted on the top of the bracket, with its piston rod extending vertically upwards and its top end fixedly connected to the apex of the triangular support. The left and right ends of the bottom edge of the triangular support are fixedly connected to the front ends of the forklift legs. The hand pump is mounted on the bracket next to the hydraulic cylinder, and the hydraulic cylinder is connected to the hand pump. The forklift handle is used to drive the hand pump to pressurize the hydraulic cylinder. The two sides of the bracket are hinged to the lower parts of the left and right inclined sides of the triangular support via hinged swing arms.

[0010] The shell-breaking air pipe is equipped with a valve, and the top of the shell-breaking air pipe has a horizontal bend, which is connected by an adapter with a nominal diameter of 40-60mm.

[0011] The top of the feeding air pipe is provided with a horizontal bend, which is connected by an adapter with a nominal diameter of 10-30mm.

[0012] The diameter of the shell-breaking air pipe is larger than the diameter of the feeding air pipe.

[0013] The beneficial effects of this utility model are as follows: This invention, by setting up multiple sets of feeding gas pipes and a set of shell-breaking devices to work in coordination, enables the transition from online to offline maintenance after the overhaul of the upper cylinder of the electrolytic cell. This allows for direct testing in the cell repair workshop, reducing ineffective secondary-risk hoisting operations and shortening the working time in harsh environments with high temperature, high voltage, strong electromagnetic fields, and high dust levels. The maintenance environment is improved, the maintenance quality is enhanced, and personal safety, property safety, and maintenance safety are guaranteed.

[0014] This utility model has a separate controller for controlling the air inlet and outlet of the feeding air pipe and a valve for controlling the air inlet and outlet of the shell-breaking air pipe, so as to realize the coordinated action of the feeding air pipe and the shell-breaking air pipe. After the residue in the cylinder is shelled, the feeding air is then ventilated, and there will be no mutual interference due to inconsistent airflow impact force.

[0015] This invention can adjust the height of a manual hydraulic forklift by controlling the handle of the manual hydraulic forklift to drive the hydraulic cylinder, thereby ensuring the height of the upper cylinder of the feed air pipe and the shell-breaking air pipe adapter slot.

[0016] This invention features an L-shaped bracket designed at the rear of the controller, which can be used to store flexible air tubes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the manual hydraulic forklift structure of this utility model.

[0018] The names and numbers of the parts in the diagram are as follows: 1 is a manual hydraulic forklift, 2 is a transverse linkage, 3 is a controller, 4 is a discharge air pipe, 5 is a shell-breaking air pipe, 6 is a valve, 7 is a forklift leg, 8 is a fixed bracket, 9 is a main air intake pipe, 10 is a reinforcing plate, 11 is a forklift base, 12 is a forklift wheel, 13 is a triangular support base, 14 is a forklift handle, 15 is a hydraulic cylinder, 16 is a fixed frame, 17 is an L-shaped bracket, 18 is a hand pump, 19 is a bracket, 20 is a vertical shaft, 21 is a caster wheel, and 22 is a swing arm. Detailed Implementation

[0019] The following description, in conjunction with the accompanying drawings, details the implementation methods and embodiments of this utility model and their working processes.

[0020] Referring to the accompanying drawings, an offline testing device for the upper part of an aluminum electrolysis cell in this embodiment includes a manual hydraulic forklift 1, a transverse connecting rod 2, a controller 3, a feeding air pipe 4, a shell-breaking air pipe 5, a fixed bracket 8, and an air inlet main pipe 9. The fixed bracket 8 is vertically mounted on the forklift legs 7 of the manual hydraulic forklift 1. The transverse connecting rod 2 is arranged in the middle of the fixed bracket 8. The feeding air pipe 4 is provided in multiple sets, with the middle part of each set of feeding air pipe 4 fixed on the transverse connecting rod 2 and the upper end extending above the fixed bracket 8. Each set of feeding air pipe 4 is provided with a solenoid valve, which is located below the transverse connecting rod 2. The controller 3 is located on the transverse connecting rod 2 and is electrically connected to each solenoid valve, controlling the opening and closing of the solenoid valves by a switch. The lower end of each set of feeding air pipe 4 is connected to the air inlet main pipe 9, with one end of the air inlet main pipe 9 closed and the other end connected to an air source. The lower end of the shell-breaking air pipe 5 is connected to the air inlet main pipe 9, and the upper end extends above the fixed bracket 8.

[0021] The transverse connecting rod 2 is provided with an L-shaped bracket 17, which is used to store the soft air tube.

[0022] It also includes a fixing frame 16, the left and right sides of which are respectively installed on two sets of forklift legs 7, and the left and right sides are consistent with the top width of the two sets of forklift legs 7.

[0023] The lower end of the fixed bracket 8 is provided with a reinforcing plate 10 that is connected to the fixed frame 16.

[0024] The manual hydraulic forklift 1 includes a forklift handle 14, a hand pump 18, a hydraulic cylinder 15, a forklift base 11, a triangular support 13, forklift legs 7, forklift wheels 12, and a hand pump 18. Forklift wheels 12 are respectively provided on the front and rear sides of the forklift base 11. A vertical shaft 20 is mounted on the front end of the forklift base 11 via a bracket 19, and a caster wheel 21 is mounted on the lower end of the vertical shaft 20. Two sets of forklift legs 7 are provided, respectively positioned on the left and right sides of the forklift base 11. The hydraulic cylinder 15 is located on the top of the bracket 19. The piston rod of the hydraulic cylinder 15 extends vertically upward, and its top end is fixedly connected to the apex of the triangular support 13. The left and right ends of the bottom edge of the triangular support 13 are respectively fixedly connected to the front ends of the forklift legs 7. The hand pump 18 is mounted on the bracket 19 and located next to the hydraulic cylinder 15. The hydraulic cylinder 15 is connected to the hand pump 18. The forklift handle 14 is used to drive the hand pump 18 to pressurize the hydraulic cylinder 15. The two sides of the bracket 19 are respectively hinged to the lower part of the left and right inclined sides of the triangular support 13 through the hinged swing arms 22.

[0025] The shell-breaking air pipe 5 is equipped with a valve 6, and the top of the shell-breaking air pipe 5 has a horizontal bend, which is connected by an adapter with a nominal diameter of 50mm.

[0026] The top of the feeding air pipe 4 is provided with a horizontal bend, which is connected by an adapter with a nominal diameter of 20mm.

[0027] The diameter of the shell-breaking air pipe 5 is larger than the diameter of the feeding air pipe 4.

[0028] The working process of this embodiment is as follows: Connect the feeding air pipe 4 and the shell-breaking air pipe 5 to the air inlet pipe of the cylinder to be tested. First, disconnect the pneumatic solenoid valve of the feeding air pipe 4, open valve 6, and supply air to the shell-breaking air pipe 5 through the main air inlet pipe 9 to achieve air communication between the shell-breaking air pipe and the corresponding cylinder air inlet pipe. After shell-breaking and cleaning the material residue in the cylinder, close valve 6. Then, start the controller 3 switch to open the solenoid valve of the feeding air pipe 4 and supply air to the feeding air pipe 4 through the main air inlet pipe 9 to achieve air communication between the feeding air pipe 4 and the corresponding cylinder air inlet pipe. Check whether the cylinder can operate normally to achieve the purpose of testing. After the test is completed, disconnect the solenoid valve, cut off the air supply, and disconnect the air pipe connection.

Claims

1. An offline testing device for the upper part of an aluminum electrolysis cell, comprising a manual hydraulic forklift (1), a transverse linkage (2), a controller (3), a feeding air pipe (4), a shell-breaking air pipe (5), a fixed bracket (8), and an air inlet main pipe (9), characterized in that: The fixed bracket (8) is vertically installed on the forklift leg (7) of the manual hydraulic forklift (1); a transverse connecting rod (2) is provided in the middle of the fixed bracket (8); multiple sets of discharge air pipes (4) are provided, and the middle part of each set of discharge air pipes (4) is fixed on the transverse connecting rod (2) and the upper end extends to the top of the fixed bracket (8); each set of discharge air pipes (4) is provided with a solenoid valve, which is located below the transverse connecting rod (2); the controller (3) is located on the transverse connecting rod (2) and is electrically connected to each solenoid valve, and the opening and closing of the solenoid valve is controlled by a switch; The lower ends of each group of feeding air pipes (4) are connected to the main air inlet pipe (9), one end of the main air inlet pipe (9) is closed, and the other end is connected to the air source; The lower end of the shell-breaking air pipe (5) is connected to the main air intake pipe (9), and the upper end extends above the fixed bracket (8).

2. The offline testing device for the upper part of the aluminum electrolysis cell according to claim 1, characterized in that: The transverse connecting rod (2) is provided with an L-shaped bracket (17), which is used to store the soft air tube.

3. The offline testing device for the upper part of the aluminum electrolysis cell according to claim 1, characterized in that: It also includes a fixing frame (16), the left and right sides of which are respectively installed on two sets of forklift legs (7), and the left and right sides are consistent with the top width of the two sets of forklift legs (7).

4. The offline testing device for the upper part of the aluminum electrolysis cell according to claim 3, characterized in that: The lower end of the fixed bracket (8) is provided with a reinforcing plate (10) that is connected to the fixed frame (16).

5. The offline testing device for the upper part of the aluminum electrolysis cell according to claim 3, characterized in that: The manual hydraulic forklift (1) includes a forklift handle (14), a hydraulic cylinder (15), a forklift base (11), a triangular support seat (13), forklift legs (7), forklift wheels (12), and a hand pump (18). Forklift wheels (12) are provided on both sides of the front and rear of the forklift base (11); a vertical shaft (20) is installed on the front end of the forklift base (11) via a bracket (19), and a universal wheel (21) is installed on the lower end of the vertical shaft (20); two sets of forklift legs (7) are provided, which are placed on the left and right sides of the forklift base (11); a hydraulic cylinder (15) is provided on the top of the bracket (19), the piston rod of the hydraulic cylinder (15) extends vertically upward, and its top end is fixedly connected to the top corner of the triangular support base (13), and the bottom left and right ends of the triangular support base (13) are fixedly connected to the front end of the forklift legs (7); The hand pump (18) is mounted on the bracket (19) and connected to the hydraulic cylinder (15). The forklift handle (14) is used to drive the hand pump (18) to pressurize the hydraulic cylinder (15). The bracket (19) is hinged to the lower part of the left and right inclined sides of the triangular support base (13) by hinged swing arms (22) on both sides respectively.

6. The offline testing device for the upper part of the aluminum electrolysis cell according to claim 1, characterized in that: The shell-breaking air pipe (5) is equipped with a valve (6), and the top of the shell-breaking air pipe (5) is provided with a horizontal bend, which is connected by an adapter with a nominal diameter of 40-60mm.

7. The offline testing device for the upper part of the aluminum electrolysis cell according to claim 1, characterized in that: The top of the feeding air pipe (4) is provided with a horizontal bend, which is connected by an adapter with a nominal diameter of 10-30mm.

8. The offline testing device for the upper part of the aluminum electrolysis cell according to claim 1, characterized in that: The diameter of the shell-breaking air pipe (5) is larger than the diameter of the feeding air pipe (4).

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