Aluminum electrolysis cell control device based on centralized management and control distributed execution

Abstract

The utility model discloses an aluminum electrolysis cell control device based on centralized management and control distributed execution, which relates to the technical field of aluminum electrolysis and comprises an upper computer, a crust breaking and blanking execution mechanism and an anode lifting execution mechanism. The crust breaking and discharging executing mechanism comprises a first signal receiving plate, at least one villiaumite discharging unit, at least one aluminum oxide discharging unit and at least one crust breaking unit. The anode lifting executing mechanism comprises a second signal receiving plate, an anode lifting contactor, an anode descending contactor and a three-phase motor; the first signal receiving plate is respectively connected with the villiaumite blanking unit, the aluminum oxide blanking unit and the crust breaking unit; the villiaumite discharging unit, the aluminum oxide discharging unit and the crust breaking unit are connected in parallel; the second signal receiving plate is respectively connected with the anode rising contactor and the anode falling contactor; and the three-phase motor is respectively connected with the anode ascending contactor and the anode descending contactor. According to the utility model, one-to-many control of the upper computer and each electrolytic bath actuating mechanism is realized, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum electrolysis, and in particular to an aluminum electrolysis cell control device based on centralized control and distributed execution. Background Art

[0002] With the increase in the size of electrolytic cells, the design of traditional electrolytic cell control systems does not match the complex production process. Although the production of electrolytic cells at home and abroad currently mainly relies on cell control machines, traditional cell control machines can no longer meet the electrolytic cell's needs for informatization and intelligence.

[0003] In the traditional aluminum electrolysis industry, a cell controller is usually used to control the action of an electrolytic cell actuator. Each cell controller integrates functions such as shelling, unloading, anode lifting, data sending and receiving. In the process of controlling the electrolytic cell, it is necessary to use the host computer to send control instructions to each cell controller. Each cell controller analyzes and calculates the issued instructions and obtains the control results. Finally, the control results are output to the corresponding electrolytic cell actuator for action. Therefore, the traditional one-to-one control method between the cell controller and the electrolytic cell actuator makes the overall operation process more cumbersome and the work efficiency is low. Utility Model Content

[0004] The purpose of the embodiment of the utility model is to provide an aluminum electrolytic cell control device based on centralized control and distributed execution. By changing the electrolytic cell actuator, one-to-many control between the host computer and each electrolytic cell actuator is achieved, which simplifies the overall operation process and improves work efficiency.

[0005] To achieve the above purpose, the present invention provides the following solutions:

[0006] A control device for an aluminum electrolytic cell based on centralized control and distributed execution, comprising: a host computer, a shell breaking and unloading actuator and an anode lifting actuator; the shell breaking and unloading actuator comprises: a first signal receiving board, at least one fluoride salt unloading unit, at least one alumina unloading unit and at least one shell breaking unit; the anode lifting actuator comprises: a second signal receiving board, an anode lifting contactor, an anode lowering contactor and a three-phase motor;

[0007] The first signal receiving board is connected to the fluoride salt unloading unit, the alumina unloading unit and the shell breaking unit respectively; the fluoride salt unloading unit, the alumina unloading unit and the shell breaking unit are connected in parallel; the second signal receiving board is connected to the anode raising contactor and the anode lowering contactor respectively; the three-phase motor is connected to the anode raising contactor and the anode lowering contactor respectively; the anode raising contactor and the anode lowering contactor are connected in an interlocking manner;

[0008] The host computer is used to issue control instructions to the shelling and unloading actuator and the anode lifting and lowering actuator; the control instructions include fluoride salt unloading instructions, alumina unloading instructions, shelling instructions, anode raising instructions and anode lowering instructions; the first signal receiving board is used to receive the fluoride salt unloading instructions, the alumina unloading instructions and the shelling instructions; the second signal receiving board is used to receive the anode raising instructions and the anode lowering instructions; the fluoride salt unloading unit is used to perform the fluoride salt unloading action according to the fluoride salt unloading instruction; the alumina unloading unit is used to perform the alumina unloading action according to the alumina unloading instruction; the shelling unit is used to perform the shelling action according to the shelling instruction; the anode lifting contactor is used to control the forward rotation of the three-phase motor according to the anode lifting instruction; the forward rotation of the three-phase motor drives the anode of the aluminum electrolytic cell to rise; the anode contactor is used to control the reverse rotation of the three-phase motor according to the anode lowering instruction; the reverse rotation of the three-phase motor drives the anode of the aluminum electrolytic cell to descend.

[0009] Optionally, the fluoride salt unloading unit comprises: a fluoride salt unloading relay, a fluoride salt unloading solenoid valve and a fluoride salt unloading mechanism; the alumina unloading unit comprises: an alumina unloading relay, an alumina unloading solenoid valve and an alumina unloading mechanism; the shelling unit comprises: a shelling relay, a shelling solenoid valve and a shelling mechanism;

[0010] The fluoride salt unloading relay is connected to the fluoride salt unloading solenoid valve; the fluoride salt unloading solenoid valve is connected to the fluoride salt unloading mechanism; the alumina unloading relay is connected to the alumina unloading solenoid valve; the alumina unloading solenoid valve is connected to the alumina unloading mechanism; the shelling relay is connected to the shelling solenoid valve; the shelling solenoid valve is connected to the shelling mechanism;

[0011] The fluoride salt unloading relay is used to control the conduction of the fluoride salt unloading solenoid valve according to the fluoride salt unloading instruction; after the fluoride salt unloading solenoid valve is turned on, the fluoride salt unloading mechanism performs the fluoride salt unloading action; the alumina unloading relay is used to control the conduction of the alumina unloading solenoid valve according to the alumina unloading instruction; after the alumina unloading solenoid valve is turned on, the alumina unloading mechanism performs the alumina unloading action; the shell breaking relay is used to control the conduction of the shell breaking solenoid valve according to the shell breaking instruction; after the shell breaking solenoid valve is turned on, the shell breaking mechanism performs the shell breaking action.

[0012] Optionally, the anode lifting actuator further comprises: a power contactor, a self-test contactor and a thermal relay;

[0013] The input end of the power contactor is connected to the power supply end; the output end of the power contactor is connected to the input end of the self-test contactor; the output end of the self-test contactor is connected to the input end of the anode rise contactor; the input end of the thermal relay is respectively connected to the output end of the anode rise contactor and the output end of the anode drop contactor; the output end of the thermal relay is connected to the three-phase motor;

[0014] The power contactor is used to control the start and stop of the anode lifting actuator; the self-test contactor is used to check the on and off of the anode lifting actuator; and the thermal relay is used to protect the anode lifting actuator.

[0015] Optionally, the self-test contactor comprises: a first self-test contactor and a second self-test contactor;

[0016] The input end of the first self-test contactor is connected to the output end of the power contactor; the output end of the first self-test contactor is connected to the input end of the second self-test contactor; the output end of the second self-test contactor is respectively connected to the input end of the anode rise contactor and the input end of the anode fall contactor;

[0017] The first self-test contactor and the second self-test contactor are turned on or off at the same time.

[0018] Optionally, the anode raising contactor and the anode lowering contactor are connected in an interlocking manner, specifically:

[0019] The first input end of the anode raising contactor is connected to the first input end of the anode lowering contactor; the second input end of the anode raising contactor is connected to the second input end of the anode lowering contactor; the third input end of the anode raising contactor is connected to the third input end of the anode lowering contactor; the first output end of the anode raising contactor is connected to the third output end of the anode lowering contactor; the second output end of the anode raising contactor is connected to the second output end of the anode lowering contactor; the third output end of the anode raising contactor is connected to the first output end of the anode lowering contactor.

[0020] Optionally, the model of the fluoride salt unloading relay, the alumina unloading relay and the shell breaking relay is MY2NJ-GS; the model of the anode raising contactor and the anode lowering contactor is LC1E50.

[0021] According to the specific embodiments provided by the embodiments of the present invention, the present invention discloses the following technical effects:

[0022] The utility model changes the traditional mode that the host computer first sends control instructions to each tank control machine, and each tank control machine then controls the action of the electrolytic cell actuator separately. By resetting the shelling and unloading actuator, the first signal receiving board can directly receive the fluoride salt unloading instruction, alumina unloading instruction and shelling instruction issued by the host computer, the fluoride salt unloading unit performs the fluoride salt unloading action according to the corresponding instruction, the alumina unloading unit performs the alumina unloading action according to the corresponding instruction, and the shelling unit performs the shelling action according to the corresponding instruction; by setting the anode lifting and lowering actuator, the second signal receiving board can also directly receive the anode lifting and lowering instructions issued by the host computer, the anode lifting contactor makes the three-phase motor rotate forward according to the corresponding instruction to drive the anode of the aluminum electrolytic cell to rise, and the anode lowering contactor makes the three-phase motor reverse according to the corresponding instruction to drive the anode of the aluminum electrolytic cell to fall. Therefore, the change of the electrolytic cell actuator realizes one-to-many control between the host computer and each electrolytic cell actuator, simplifies the overall operation process, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 A structural connection diagram of a shell breaking and material cutting actuator provided in an embodiment of the utility model;

[0025] Figure 2 A structural connection diagram of the anode lifting actuator provided in the embodiment of the utility model;

[0026] Figure 3 A connection diagram of the second signal receiving board and each contactor in the anode lifting actuator provided in an embodiment of the utility model.

[0027] Explanation of symbols:

[0028] The first signal receiving board -1, fluoride salt unloading unit -2, fluoride salt unloading relay -21, fluoride salt unloading solenoid valve -22, alumina unloading unit -3, alumina unloading relay -31, alumina unloading solenoid valve -32, shelling unit -4, shelling relay -41, shelling solenoid valve -42, the second signal receiving board -5, anode raising contactor -6, anode lowering contactor -7, power contactor -8, the first self-test contactor -9, the second self-test contactor -10, thermal relay -11, three-phase motor -12. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] The purpose of the embodiment of the utility model is to provide an aluminum electrolytic cell control device based on centralized control and distributed execution. By changing the electrolytic cell actuator, one-to-many control between the host computer and each electrolytic cell actuator is achieved, which simplifies the overall operation process and improves work efficiency.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] Figure 1 An exemplary structure of a shell breaking and material cutting actuator is shown. Figure 2 An exemplary structure of an anode lifting actuator is shown. Figure 1 and Figure 2 The various parts of the aluminum electrolytic cell control device based on centralized control and distributed execution are introduced in detail.

[0033] A control device for an aluminum electrolytic cell based on centralized control and distributed execution includes: a host computer, a shell breaking and unloading actuator, and an anode lifting actuator. Figure 1 , Figure 2 and Figure 3 As shown, the shell breaking and unloading actuator includes: a first signal receiving board 1, at least one fluoride salt unloading unit 2, at least one alumina unloading unit 3 and at least one shell breaking unit 4; the anode lifting actuator includes: a second signal receiving board 5, an anode lifting contactor 6, an anode lowering contactor 7 and a three-phase motor 12.

[0034] In one example, the shell breaking and unloading actuator is provided with a fluoride salt unloading unit 2 , six alumina unloading units 3 and six shell breaking units 4 .

[0035] In one example, the anode raising contactor 6 and the anode lowering contactor 7 are of model LC1E50.

[0036] Specifically, the first signal receiving board 1 is connected to the fluoride salt feeding unit 2, the alumina feeding unit 3 and the shelling unit 4 respectively; the fluoride salt feeding unit 2, the alumina feeding unit 3 and the shelling unit 4 are connected in parallel; the second signal receiving board 5 is connected to the anode raising contactor 6 and the anode lowering contactor 7 respectively; the three-phase motor 12 is connected to the anode raising contactor 6 and the anode lowering contactor 7 respectively; the anode raising contactor 6 and the anode lowering contactor 7 are connected in an interlocking manner. Among them, the interlocking connection method between the anode raising contactor 6 and the anode lowering contactor 7 is:

[0037] The first input terminal of the anode raising contactor 6 is connected to the first input terminal of the anode lowering contactor 7; the second input terminal of the anode raising contactor 6 is connected to the second input terminal of the anode lowering contactor 7; the third input terminal of the anode raising contactor 6 is connected to the third input terminal of the anode lowering contactor 7; the first output terminal of the anode raising contactor 6 is connected to the third output terminal of the anode lowering contactor 7; the second output terminal of the anode raising contactor 6 is connected to the second output terminal of the anode lowering contactor 7; the third output terminal of the anode raising contactor 6 is connected to the first output terminal of the anode lowering contactor 7.

[0038] In one example, the six shelling units 4 are connected in parallel; the six alumina feeding units 3 are connected in parallel; the shelling units 4, the alumina feeding units 3 and the fluoride salt feeding units 2 are also connected in parallel; the shelling units 4, the alumina feeding units 3 and the fluoride salt feeding units 2 connected in parallel are connected to a 24V AC power supply.

[0039] Among them, the upper computer is used to issue control instructions to the shelling and unloading actuator and the anode lifting and lowering actuator; the control instructions include fluoride salt unloading instructions, alumina unloading instructions, shelling instructions, anode raising instructions and anode lowering instructions; the first signal receiving board 1 is used to receive fluoride salt unloading instructions, alumina unloading instructions and shelling instructions; the second signal receiving board 5 is used to receive anode raising instructions and anode lowering instructions; the fluoride salt unloading unit 2 is used to perform the fluoride salt unloading action according to the fluoride salt unloading instruction; the alumina unloading unit 3 is used to perform the alumina unloading action according to the alumina unloading instruction; the shelling unit 4 is used to perform the shelling action according to the shelling instruction; the anode raising contactor 6 is used to control the three-phase motor 12 to rotate forward according to the anode raising instruction; the three-phase motor 12 rotates forward to drive the anode of the aluminum electrolytic cell to rise; the anode lowering contactor 7 is used to control the three-phase motor 12 to reverse according to the anode lowering instruction; the three-phase motor 12 reverses to drive the anode of the aluminum electrolytic cell to descend.

[0040] In this embodiment, the three-phase motor 12 is connected to the spiral in the aluminum electrolytic cell, the spiral is connected to the balance busbar, the balance busbar is fixed to the guide rod, and the guide rod is connected to the anode of the aluminum electrolytic cell. Therefore, when the three-phase motor 12 rotates forward, it drives the spiral, the balance busbar and the guide rod to move in turn, thereby realizing the rise of the anode of the aluminum electrolytic cell; when the three-phase motor 12 rotates reversely, it drives the spiral, the balance busbar and the guide rod to move in turn, thereby realizing the fall of the anode of the aluminum electrolytic cell.

[0041] Further, the fluoride salt unloading unit 2 includes: a fluoride salt unloading relay 21, a fluoride salt unloading solenoid valve 22 and a fluoride salt unloading mechanism; the alumina unloading unit 3 includes: an alumina unloading relay 31, an alumina unloading solenoid valve 32 and an alumina unloading mechanism; and the shelling unit 4 includes: a shelling relay 41, a shelling solenoid valve 42 and a shelling mechanism. The fluoride salt unloading relay 21 is connected to the fluoride salt unloading solenoid valve 22; the fluoride salt unloading solenoid valve 22 is connected to the fluoride salt unloading mechanism; the alumina unloading relay 31 is connected to the alumina unloading solenoid valve 32; the alumina unloading solenoid valve 32 is connected to the alumina unloading mechanism; the shelling relay 41 is connected to the shelling solenoid valve 42; and the shelling solenoid valve 42 is connected to the shelling mechanism.

[0042] In one example, the models of the fluoride salt feeding relay 21 , the aluminum oxide feeding relay 31 and the shelling relay 41 are MY2NJ-GS.

[0043] Among them, the fluoride salt unloading relay 21 is used to control the conduction of the fluoride salt unloading solenoid valve 22 according to the fluoride salt unloading instruction; after the fluoride salt unloading solenoid valve 22 is turned on, the fluoride salt unloading mechanism performs the fluoride salt unloading action; the alumina unloading relay 31 is used to control the conduction of the alumina unloading solenoid valve 32 according to the alumina unloading instruction; after the alumina unloading solenoid valve 32 is turned on, the alumina unloading mechanism performs the alumina unloading action; the shelling relay 41 is used to control the conduction of the shelling solenoid valve 42 according to the shelling instruction; after the shelling solenoid valve 42 is turned on, the shelling mechanism performs the shelling action.

[0044] In this embodiment, when the first signal receiving board 1 receives the control instruction issued by the host computer (the control instruction is specifically an instruction to control a fluoride salt unloading unit 2, an alumina unloading unit 3 or a shelling unit 4 to perform an action), the coil of the relay in the corresponding unit is energized, the solenoid valve is energized, and the actuator starts to execute the fluoride salt unloading action, the alumina unloading action or the shelling action.

[0045] Furthermore, the anode lifting actuator also includes: a power contactor 8, a self-test contactor and a thermal relay 11. The input end of the power contactor 8 is connected to the power supply end; the output end of the power contactor 8 is connected to the input end of the self-test contactor; the output end of the self-test contactor is connected to the input end of the anode lifting contactor 6; the input end of the thermal relay 11 is respectively connected to the output end of the anode lifting contactor 6 and the output end of the anode lowering contactor 7; the output end of the thermal relay 11 is connected to the three-phase motor 12. Among them, the self-test contactor includes:

[0046] A first self-test contactor 9 and a second self-test contactor 10; the input end of the first self-test contactor 9 is connected to the output end of the power contactor 8; the output end of the first self-test contactor 9 is connected to the input end of the second self-test contactor 10; the output end of the second self-test contactor 10 is respectively connected to the input end of the anode rising contactor 6 and the input end of the anode falling contactor 7.

[0047] In one example, the voltage at the power supply end is 380V and is a three-phase voltage.

[0048] In one example, the first self-test contactor 9 and the second self-test contactor 10 are turned on or off at the same time.

[0049] Among them, the power contactor 8 is used to control the start and stop of the anode lifting actuator; the self-test contactor is used to check the on and off of the anode lifting actuator; and the thermal relay 11 is used to protect the anode lifting actuator.

[0050] In this embodiment, before the anode lifting actuator is used, it is necessary to use the host computer to send a self-test command signal to the second signal receiving board 5. When the second signal receiving board 5 receives the self-test command signal, it controls the first self-test contactor 9 and the second self-test contactor 10 to be attracted / disconnected to check whether the circuit conduction of the anode lifting actuator is normal. Only when it is determined that the circuit conduction of the anode lifting actuator is normal, the control of anode raising / anode lowering can be performed. At the same time, in the process of controlling the anode raising / anode lowering, it is necessary to ensure that the first self-test contactor 9, the second self-test contactor 10 and the power supply contactor 8 are in the attracted state. At this time, it is only necessary to control the anode raising contactor 6 or the anode lowering contactor 7 to be attracted to realize the corresponding anode lifting action. In addition, when the three-phase current in the anode lifting actuator is too large, the thermal relay 11 will automatically disconnect, thereby realizing the function of circuit protection.

[0051] In summary, the aluminum electrolytic cell control device based on centralized control and distributed execution provided by the utility model decouples the electrolytic cell execution structure, uses shell breaking and unloading as an independent control unit, and uses anode lifting as another independent control unit. The two control units are independent of each other and do not affect each other. At the same time, the device cancels the control of the cell control machine, and each unit is controlled by a host computer. Only data collection, execution of the actuator and emergency processing functions are retained on site, and all data display, calculation and decision-making are completed by the host computer.

[0052] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0053] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. At the same time, for those skilled in the art, according to the ideas of the utility model, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the utility model.

Claims

1. An aluminum electrolysis cell control device based on centralized control and distributed execution, characterized in that: include: Host computer, shell breaking and unloading actuator and anode lifting actuator; The shell breaking and unloading actuator comprises: a first signal receiving board, at least one fluoride salt unloading unit, at least one alumina unloading unit and at least one shell breaking unit; the anode lifting actuator comprises: a second signal receiving board, an anode lifting contactor, an anode lowering contactor and a three-phase motor; The first signal receiving board is connected to the fluoride salt unloading unit, the alumina unloading unit and the shell breaking unit respectively; the fluoride salt unloading unit, the alumina unloading unit and the shell breaking unit are connected in parallel; the second signal receiving board is connected to the anode raising contactor and the anode lowering contactor respectively; the three-phase motor is connected to the anode raising contactor and the anode lowering contactor respectively; the anode raising contactor and the anode lowering contactor are connected in an interlocking manner; The host computer is used to issue control instructions to the shelling and unloading actuator and the anode lifting and lowering actuator; the control instructions include fluoride salt unloading instructions, alumina unloading instructions, shelling instructions, anode raising instructions and anode lowering instructions; the first signal receiving board is used to receive the fluoride salt unloading instructions, the alumina unloading instructions and the shelling instructions; the second signal receiving board is used to receive the anode raising instructions and the anode lowering instructions; the fluoride salt unloading unit is used to perform the fluoride salt unloading action according to the fluoride salt unloading instruction; the alumina unloading unit is used to perform the alumina unloading action according to the alumina unloading instruction; the shelling unit is used to perform the shelling action according to the shelling instruction; the anode raising contactor is used to control the forward rotation of the three-phase motor according to the anode raising instruction; the forward rotation of the three-phase motor drives the anode of the aluminum electrolytic cell to rise; the anode lowering contactor is used to control the reverse rotation of the three-phase motor according to the anode lowering instruction; the reverse rotation of the three-phase motor drives the anode of the aluminum electrolytic cell to descend.

2. The aluminum electrolysis cell control device based on centralized control and distributed execution according to claim 1 is characterized in that: The fluoride salt unloading unit includes: a fluoride salt unloading relay, a fluoride salt unloading solenoid valve and a fluoride salt unloading mechanism; the alumina unloading unit includes: an alumina unloading relay, an alumina unloading solenoid valve and an alumina unloading mechanism; the shelling unit includes: a shelling relay, a shelling solenoid valve and a shelling mechanism; The fluoride salt unloading relay is connected to the fluoride salt unloading solenoid valve; the fluoride salt unloading solenoid valve is connected to the fluoride salt unloading mechanism; the alumina unloading relay is connected to the alumina unloading solenoid valve; the alumina unloading solenoid valve is connected to the alumina unloading mechanism; the shelling relay is connected to the shelling solenoid valve; the shelling solenoid valve is connected to the shelling mechanism; The fluoride salt unloading relay is used to control the conduction of the fluoride salt unloading solenoid valve according to the fluoride salt unloading instruction; after the fluoride salt unloading solenoid valve is turned on, the fluoride salt unloading mechanism performs the fluoride salt unloading action; the alumina unloading relay is used to control the conduction of the alumina unloading solenoid valve according to the alumina unloading instruction; after the alumina unloading solenoid valve is turned on, the alumina unloading mechanism performs the alumina unloading action; the shell breaking relay is used to control the conduction of the shell breaking solenoid valve according to the shell breaking instruction; after the shell breaking solenoid valve is turned on, the shell breaking mechanism performs the shell breaking action.

3. The aluminum electrolysis cell control device based on centralized control and distributed execution according to claim 1 is characterized in that: The anode lifting actuator also includes: a power contactor, a self-test contactor and a thermal relay; The input end of the power contactor is connected to the power supply end; the output end of the power contactor is connected to the input end of the self-test contactor; the output end of the self-test contactor is connected to the input end of the anode rise contactor; the input end of the thermal relay is respectively connected to the output end of the anode rise contactor and the output end of the anode drop contactor; the output end of the thermal relay is connected to the three-phase motor; The power contactor is used to control the start and stop of the anode lifting actuator; the self-test contactor is used to check the on and off of the anode lifting actuator; and the thermal relay is used to protect the anode lifting actuator.

4. The aluminum electrolysis cell control device based on centralized control and distributed execution according to claim 3 is characterized in that: The self-test contactor comprises: a first self-test contactor and a second self-test contactor; The input end of the first self-test contactor is connected to the output end of the power contactor; the output end of the first self-test contactor is connected to the input end of the second self-test contactor; the output end of the second self-test contactor is respectively connected to the input end of the anode rise contactor and the input end of the anode fall contactor; The first self-test contactor and the second self-test contactor are turned on or off at the same time.

5. The aluminum electrolysis cell control device based on centralized control and distributed execution according to claim 1 is characterized in that: The anode raising contactor and the anode lowering contactor are connected in an interlocking manner, specifically: The first input end of the anode raising contactor is connected to the first input end of the anode lowering contactor; the second input end of the anode raising contactor is connected to the second input end of the anode lowering contactor; the third input end of the anode raising contactor is connected to the third input end of the anode lowering contactor; the first output end of the anode raising contactor is connected to the third output end of the anode lowering contactor; the second output end of the anode raising contactor is connected to the second output end of the anode lowering contactor; the third output end of the anode raising contactor is connected to the first output end of the anode lowering contactor.

6. The aluminum electrolysis cell control device based on centralized control and distributed execution according to claim 2 is characterized in that: The model of the fluoride salt unloading relay, the alumina unloading relay and the shell breaking relay is MY2NJ-GS; the model of the anode raising contactor and the anode lowering contactor is LC1E50.

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