Emergency stop linkage device for aluminum electrolysis cell control machine and rectification system

Abstract

The utility model belongs to the technical field of aluminum electrolysis cell production safety control, and particularly discloses an aluminum electrolysis cell control machine and rectification system emergency stop linkage device which comprises a plurality of cell control machines, a linkage signal controller and a rectification system, the cell control machines are connected in parallel, the cell control machines are connected to the linkage signal controller through double-core shielding signal lines, and the rectification system is connected to the linkage signal controller through double-core shielding signal lines. The linkage signal controller comprises a frequency generator and a signal receiver, the output end of the double-core shielding signal line is connected with the signal receiver, the input end of the double-core shielding signal line is connected with the frequency generator, and the frequency generator and the signal receiver are electrically connected with a switching power supply. And the linkage signal controller is electrically connected to the rectification system. According to the utility model, specific fault slot position information from the slot control machine is received through the slot control system, the fault information is transmitted to a rectifying system monitoring interface through the linkage signal controller, and the sudden stop action of the electrolytic cell and the upper computer is completed at the same time.

Description

Technical Field

[0001] This utility model relates to the field of safety control technology in aluminum electrolysis cell production, specifically to an emergency stop linkage device for the control and rectification system of an aluminum electrolysis cell. Background Technology

[0002] In the electrolytic aluminum production process, the stable operation of the electrolytic cell requires extremely high levels of safety and efficiency. In traditional technology, when an accident occurs in an electrolytic cell, it is necessary to manually notify the rectifier monitoring personnel by telephone to perform current reduction or a series of power outage operations. This poses a safety hazard. Traditional solutions transmit emergency stop signals via long-distance electrical signal lines (AC 220V or DC 24V), which are prone to grounding or damage due to the complex workshop environment, potentially leading to equipment short circuits or even production accidents. Existing emergency stop buttons only trigger an overall alarm, lacking precise positioning and failing to identify the specific faulty cell, resulting in operational delays. Furthermore, electrical signals are susceptible to electromagnetic interference during long-distance transmission, causing signal distortion or failure.

[0003] Patent CN102409361B discloses an online thermoelectric monitoring system for aluminum electrolysis cell busbars, including a detection unit, an intelligent control unit, a human-machine interface unit, and a management terminal unit. The detection unit automatically detects the temperature and voltage on the aluminum electrolysis cell busbars and sends the data to a signal conditioning module via I / O terminals. After processing by a signal acquisition circuit, a power amplification circuit, and a filtering circuit, the data is sent to an industrial control computer for further processing. When the current or temperature data is outside the standard threshold range, the industrial control computer drives an audible and visual signal output module to output an alarm signal to the alarm unit, alerting staff to take appropriate measures or evacuate the site. However, this solution requires manual emergency stop after the alarm is triggered and cannot accurately pinpoint the specific faulty cell location. Utility Model Content

[0004] The purpose of this invention is to provide an emergency stop linkage device for the control and rectification system of aluminum electrolysis cells, so as to solve the problem that the existing technology cannot accurately locate the specific fault cell.

[0005] To achieve the above objectives, the basic solution provided by this utility model is as follows: an emergency stop linkage device for an aluminum electrolysis cell controller and a rectifier system, comprising a cell controller, a linkage signal controller, and a rectifier system. The cell controller is equipped with an emergency stop button. Several cell controllers are connected in parallel. The cell controllers are connected to the linkage signal controller via a double-core shielded signal line. The linkage signal controller includes a frequency generator and a signal receiver. The output end of the double-core shielded signal line is connected to the signal receiver, and the input end of the double-core shielded signal line is connected to the frequency generator. The frequency generator and the signal receiver are electrically connected to a switching power supply. The linkage signal controller is electrically connected to the rectifier system.

[0006] The principle and beneficial effects of this utility model are as follows: the frequency generator converts the electrical signal into a frequency signal, which is transmitted to the tank control machine through a double-core shielded signal line. When the emergency stop button is pressed, the double-core shielded signal line is short-circuited at the corresponding tank position, and the faulty electrolytic cell position is located at the same time. The frequency signal returns to the signal receiver through the double-core shielded line. The signal receiver analyzes the signal and sends an emergency stop or current reduction command to the rectifier system.

[0007] Option 2, a preferred option of the basic scheme, involves laying a phenolic laminate insulation board on the bottom of the linkage signal controller's housing, with the inlet hole employing a tapered protective structure. The phenolic laminate insulation board has high insulation and high-temperature resistance, preventing metal dust or liquids from seeping into the housing and avoiding short circuits. The inlet hole is sealed with a rubber telescopic head, securing the cable while isolating it from external vibration, moisture, or foreign object intrusion, ensuring physical isolation of the internal circuitry from the harsh workshop environment.

[0008] Option 3, the preferred option of the basic scheme, uses a frequency generator to convert the electrical signal into a 2-10kHz frequency signal. This frequency band has strong anti-interference capabilities and is suitable for long-distance transmission.

[0009] Option 4, a preferred option of the basic scheme, involves connecting each of the aforementioned tank controllers in parallel to the tank control system. The tank control system receives specific faulty tank information (such as "Emergency Stop for Tank No. 3") from the tank controllers, displays it synchronously on the rectifier monitoring panel, and triggers an emergency stop operation, achieving dual-system linkage.

[0010] Option 5, a preferred embodiment of the basic option, further includes a circuit breaker and an electromagnetic relay in the linkage signal controller. The circuit breaker is mounted on a DIN rail and electrically connected to a switching power supply. The signal receiver is connected to the electromagnetic relay, and the terminals of the electromagnetic relay are electrically connected to the DIN rail. When the signal receiver's control contacts close, power from the switching power supply is supplied to the electromagnetic relay. The electromagnetic relay, energized, closes its normally open contacts, transmitting the rectifier emergency stop signal smoothly to the rectifier system via another wire. The electromagnetic relay isolates the frequency signal of the linkage signal controller from the electrical signal of the rectifier emergency stop system.

[0011] Option 6, a preferred option of the basic solution, features a self-locking mushroom-shaped emergency stop button module electrically connected to an audible and visual alarm. The button is mechanically locked when pressed and requires manual rotation to reset, preventing accidental or unintentional release and immediately alerting staff to the location of the malfunction. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an emergency stop linkage device for an aluminum electrolytic cell controller and rectifier system according to this utility model;

[0013] Figure 2This is a schematic diagram of the linkage signal controller in the emergency stop linkage device of the aluminum electrolytic cell control machine and rectifier system of this utility model. Detailed Implementation

[0014] The present invention will be further described in detail below through specific embodiments:

[0015] The reference numerals in the accompanying drawings are as follows: 1-slot control machine, 2-linkage signal controller, 3-rectifier system, 4-double-core shielded signal wire, 5-frequency generator, 6-signal receiver, 8-slot control system, 9-guide rail, 10-circuit switch, 11-electromagnetic relay.

[0016] Example

[0017] like Figure 1 and Figure 2 The diagram shows an emergency stop linkage device for an aluminum electrolysis cell control unit and a rectifier system. It includes a cell control unit 1, a linkage signal controller 2, and a rectifier system 3. The cell control unit 1 is equipped with an emergency stop button. Several cell control units 1 are connected in parallel to the cell control system 8. The cell control units 1 are connected to the linkage signal controller 2 via a double-core shielded signal cable 4. The linkage signal controller 2 includes a frequency generator 5, a signal receiver 6, a circuit breaker 10, and an electromagnetic relay 11. The output end of the double-core shielded signal cable 4 is connected to the signal receiver 6, and the input end of the double-core shielded signal cable 4 is connected to the frequency generator 5. The frequency generator 5 and the signal receiver 6 are electrically connected to a switching power supply. The circuit breaker 10 is mounted on a guide rail 9 and electrically connected to the switching power supply. The signal receiver 6 is connected to the electromagnetic relay 11, and the terminals of the electromagnetic relay 11 are electrically connected to the guide rail 9. The guide rail 9 is electrically connected to the rectifier system 3. The bottom of the linkage signal controller 2 housing is covered with a phenolic laminate insulation board, and the inlet hole uses a tapered protective structure. The emergency stop button module is a self-locking mushroom-shaped button, and the emergency stop button is electrically connected to an audible and visual alarm.

[0018] The implementation method of this embodiment is as follows: When a certain electrolytic cell malfunctions, the operator presses the emergency stop button of the corresponding cell control machine 1. The cell control system 8 receives the signal and cuts off the power supply to the corresponding electrolytic cell. At the same time, the two cores of the double-core shielded signal line 4 are connected at the corresponding cell position to form a short circuit, and the frequency signal of the frequency generator 5 is sent back to the signal receiver 6. The signal receiver 6 controls the contacts to close, so that the power supply of the switching power supply is supplied to the electromagnetic relay 11. The electromagnetic relay 11 is energized and works. The normally open contacts close, and the rectification emergency stop signal is successfully transmitted to the rectification system 3 through the other core wire. The operator of the rectification system 3 selects to reduce the current or perform a series of power outage operations according to the actual situation.

[0019] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A pot controller and rectifier system emergency stop linkage, characterized by, Including groove control machine (1), linkage signal controller (2) and rectifier system (3), the groove control machine (1) is equipped with emergency stop button, a plurality of groove control machine (1) is parallelly connected, the groove control machine (1) is connected to linkage signal controller (2) by double-core shielded signal line (4), the linkage signal controller (2) includes frequency generator (5) and signal receiver (6), the output of double-core shielded signal line (4) is connected with signal receiver (6), the input of double-core shielded signal line (4) is connected with frequency generator (5), the frequency generator (5) and signal receiver (6) are electrically connected with switching power supply (7), the linkage signal controller (2) is electrically connected to rectifier system (3).

2. An emergency stop linkage for a pot controller and rectifier system for an aluminum reduction cell as defined in claim 1, characterized in that The box bottom of linkage signal controller (2) is laid with phenolic laminated insulation board, and the inlet hole adopts a shrink head protection structure.

3. An emergency stop linkage for a pot controller and rectifier system for an aluminum reduction cell as defined in claim 1, wherein, The frequency generator (5) converts electric signal into 2-10 kHz frequency signal.

4. The emergency stop linkage of a pot tending and rectifier system of an aluminum reduction cell according to claim 1, characterized in that, Each groove control machine (1) is connected in parallel to groove control system (8).

5. The emergency stop linkage of a pot tending and rectifier system of an aluminum reduction cell according to claim 1, characterized in that The linkage signal controller (2) further includes guide rail (9), air switch (10) and electromagnetic relay (11), the air switch (10) is installed on the guide rail (9), the air switch (10) is electrically connected to the switching power supply (7), the signal receiver (6) is connected with the electromagnetic relay (11), and the wiring terminal of the electromagnetic relay (11) is connected with the guide rail (9).

6. An emergency stop linkage for a pot controller and rectifier system for an aluminum reduction cell as defined in claim 1, wherein, The emergency stop button module is a self-locking mushroom head button, and the emergency stop button is electrically connected with a sound and light alarm.

Images