Insulating furnace door of 200kA electrolytic bath

Abstract

The utility model discloses a 200kA electrolytic bath insulation furnace door which comprises a furnace door plate for controlling the opening and closing states of an electrolytic bath, and the furnace door plate is arranged on one side of an end stand column of the electrolytic bath; guide rails are fixedly connected between the opposite faces of two end stand columns of the electrolytic bath, the length direction of the guide rails is perpendicular to the ground, and the furnace door plate is arranged between the two guide rails and can slide in the length direction of the guide rails. A driving mechanism is arranged above a cover plate of the electrolytic bath, is connected with the furnace door door plate and drives the furnace door door plate to longitudinally open and close; the bottom end of the furnace door plate is fixedly connected with an insulating stopper; when the furnace door plate is closed, the bottom end of the insulating stopper is contacted with the end surface of the electrolytic cell shell to realize the sealing effect of the electrolytic cell. According to the utility model, the insulativity and the sealing property of the electrolytic bath when the furnace door is closed are effectively improved, and the use effect of the electrolytic bath is further improved.

Description

Technical Field

[0001] The utility model relates to the field of electrolytic cells, in particular to an insulating furnace door of a 200kA electrolytic cell. Background Art

[0002] The electrolytic cell production process generates harmful gases (hydrogen fluoride) and dust (fluorinated aluminum oxide), as well as greenhouse gases (carbon dioxide). Therefore, electrolytic cell production must be accompanied by a purification system that treats these gases and dust through negative pressure and purification processes. To effectively prevent fugitive emissions of flue gas, the full sealing performance of the electrolytic cell is crucial for maintaining negative pressure in the system. However, during the actual 24-hour operation of the electrolytic cell, the cell door is frequently opened and closed due to operations such as aluminum liquid aspiration, quenching effects, and technical measurements and adjustments of cell temperature and aluminum levels. Therefore, the full sealing of the electrolytic cell becomes a key factor in maintaining negative pressure and controlling fugitive emissions.

[0003] Patent No. ZL202020389381.8 discloses a convenient sealing door closer for an electrolytic cell furnace door, which adopts a double-leaf design structure and is mainly opened and closed manually; however, under the action of negative pressure inside the electrolytic cell, the opening process is time-consuming and labor-intensive. At the same time, after a long period of opening and closing operations, the furnace door is prone to deformation, the door gap increases, and other conditions that affect the sealing, seriously affecting the use effect of the electrolytic cell. It is necessary to improve it. Summary of the Invention

[0004] The utility model aims to solve the above problems and provide a 200kA electrolytic cell insulated furnace door with a simple structure and better sealing performance.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] An insulated furnace door for a 200kA electrolytic cell comprises a furnace door panel for controlling the opening and closing state of the electrolytic cell, the furnace door panel being arranged on one side of an end column of the electrolytic cell; a guide rail being fixedly connected between opposing surfaces of the two end columns of the electrolytic cell, the guide rail having a length perpendicular to the ground, the furnace door panel being arranged between the two guide rails and being slidable along the length of the guide rails; a drive mechanism being arranged above a cover plate of the electrolytic cell, the drive mechanism being connected to the furnace door panel and driving the furnace door panel to perform longitudinal opening and closing movements; an insulating stopper being fixedly connected to the bottom end of the furnace door panel; when the furnace door panel is closed, the bottom end of the insulating stopper contacts the end face of the electrolytic cell shell and achieves a sealing effect on the electrolytic cell.

[0007] Furthermore, the driving mechanism includes a support column, a top plate, a driving motor, a guide wheel, and a lifting rope. There are two support columns, and the two support columns are symmetrically fixed on the top of the cover plate of the electrolytic cell. One side of the two support columns is respectively fixedly connected to the two guide rail side walls to improve the stability of the guide rail; the top ends of the two support columns are fixedly connected to the top plate, and the bottom ends of the top plates are fixedly connected to the driving motor. The output shaft of the driving motor is wound around and connected to one end of the lifting rope, and the other end of the lifting rope is connected to the top of the furnace door panel after being guided by the guide wheel arranged at the bottom end of the top plate.

[0008] Furthermore, the furnace door panel is in the shape of a vertically arranged rectangular plate, and a plurality of pulleys are provided on both sides of the width direction of the furnace door panel, and the plurality of pulleys are arranged in sequence along the height direction of the furnace door panel; the pulleys on both sides of the width direction of the furnace door panel are respectively embedded in two guide rails and are slidably connected to the guide rails.

[0009] Furthermore, the insulating stopper is in the shape of a rectangular plate, the top end of the insulating stopper is fixedly connected to the bottom end of the furnace door panel, and the bottom end of the insulating stopper contacts the end face of the electrolytic cell shell when the furnace door panel is closed.

[0010] Furthermore, a mechanical limiter is provided on one side of the upper end of one of the support columns close to the guide rail, and the maximum position height of the furnace door panel is limited by the mechanical limiter; a touch sensor is provided on one side of the upper end of the other support column, and the touch sensor is connected to the drive motor circuit and stops the drive motor when the top of the furnace door panel touches the touch sensor.

[0011] Furthermore, a handle for convenient handholding is fixedly connected to the outer end surface of the furnace door panel.

[0012] Furthermore, an emergency socket is fixedly connected to the top of the end column of the electrolytic cell for convenient emergency power use.

[0013] Furthermore, a control panel is fixedly connected to the top of the end column of the electrolytic cell, and the control panel is electrically connected to a control module arranged in a control box. The signal input end of the control module is used to access the effect signal on the control panel, and the signal output end of the control module is connected to the input end of the manual-automatic switching valve. One of the output ends of the manual-automatic switching valve is electrically connected to the drive motor, and the other output end of the manual-automatic switching valve is electrically connected to the shelling cylinder after passing through the solenoid valve.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are:

[0015] The utility model adopts a design in which a guide rail is provided on the end column and the furnace door panel is driven by a driving mechanism, so that people can use a longitudinal sliding method to realize the opening and closing operation of the furnace door panel to the electrolytic cell. It changes the traditional double-leaf design concept of the electrolytic cell furnace door, avoids the influence of the negative pressure in the electrolytic cell on the opening of the furnace door panel, makes the opening and closing operation of the furnace door panel convenient and fast, saves time and labor, and improves the use effect of the electrolytic furnace; and, in this structure, the furnace door panel is an integral structure, and the two sides of the furnace door panel edge are limited by the guide rails. It is not easy to deform or the door gap increases during use. At the same time, an insulating stopper is provided at the bottom end of the furnace door panel to seal the gap between the furnace door panel and the end face of the electrolytic cell shell, which effectively improves the insulation and sealing of the electrolytic cell when the furnace door is closed, and further improves the use effect of the electrolytic cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 This is a schematic diagram of the furnace door panel opening state;

[0018] Figure 2 This is a schematic diagram of the furnace door panel in the closed state;

[0019] Figure 3 Schematic diagram of the structure of the furnace door panel;

[0020] Figure 4 This is the control logic diagram of the control module. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts, any modifications, equivalent replacements, improvements, etc., shall be included in the scope of protection of the present invention.

[0022] like Figures 1 to 4As shown, this embodiment discloses an insulated furnace door for a 200kA electrolytic cell. In the electrolytic cell structure, end columns 2 are provided on both sides of the end. The bottom ends of the end columns 2 are fixed to the electrolytic cell shell 202, and the top ends of the end columns 2 are fixedly provided with a cover plate 201. The end columns 2, the electrolytic cell shell 202, and the cover plate 201 together form an electrolytic cell furnace opening 203. The opening and closing state of the electrolytic cell furnace opening 203 is controlled by providing a furnace door panel 1, which is provided between the two end columns 2 of the electrolytic cell; a guide rail 3 is fixedly connected between the opposite surfaces of the two end columns 2 of the electrolytic cell, and the length direction of the guide rail 3 is perpendicular to the ground. The furnace door panel 1 is provided between the two guide rails 3 and can slide along the length direction of the guide rail 3;

[0023] The furnace door panel 1 is in the shape of a vertically arranged rectangular plate, and a handle 102 for easy holding is fixedly connected to the outer end face of the furnace door panel 1. Several pulleys 101 are provided on both sides of the width direction of the furnace door panel 1, and the several pulleys 101 are arranged in sequence along the height direction of the furnace door panel 1; the pulleys 101 on both sides of the width direction of the furnace door panel 1 are respectively embedded in the two guide rails 3 and are slidably connected to the guide rails 3, and the pulleys 101 can slide along the length direction of the guide rails 3.

[0024] The guide rail is 50mm equal-leg angle steel, which is welded in parallel and installed on the inner side of the end column of the electrolytic cell. The door body equipped with side pulleys can be opened and closed smoothly, effectively ensuring the integrity and sealing of the furnace door and the electrolytic cell.

[0025] A driving mechanism is provided above the cover plate 201 of the electrolytic cell, which is connected to the furnace door panel 1 and drives the furnace door panel 1 to perform longitudinal opening and closing movements; an insulating stopper 103 is fixedly connected to the bottom end of the furnace door panel 1, and the insulating stopper 103 is in the shape of a rectangular plate, and the top of the insulating stopper 103 is fixedly connected to the bottom end of the furnace door panel 1; when the furnace door panel 1 is closed, the bottom end of the insulating stopper 103 contacts the end face of the electrolytic cell shell 202 and achieves a sealing effect on the electrolytic cell furnace mouth 203.

[0026] The main material of the furnace door panel is 1mm thick stainless steel plate, which has the advantages of being beautiful, anti-magnetic, and high-temperature resistant, while controlling the weight of the door body; the insulating stopper and side pulleys are made of high-strength, high-temperature resistant, and wear-resistant insulating materials, which improves the overall insulation stability of the furnace door; two hand handles are added to the door body, which can fully consider its emergency operation requirements in sudden situations such as loss of power source.

[0027] The driving mechanism includes a support column 4, a top plate 5, a driving motor 6, a guide wheel 7, and a hanging rope 8. There are two support columns 4, and the two support columns 4 are symmetrically fixed on the top of the cover plate 201 of the electrolytic cell. One side of the two support columns 4 is respectively fixedly connected to the side walls of the two guide rails 3 to improve the stability of the guide rails 3; the top ends of the two support columns 4 are fixedly connected to the top ends of the top plates 5, and the bottom ends of the top plates 5 are fixedly connected to the driving motor 6. The output shaft of the driving motor 6 is wound and connected with one end of the hanging rope 8 through a rope winder, and the other end of the hanging rope 8 is connected to the top of the furnace door panel 1 after being guided by the guide wheel 7 arranged at the bottom end of the top plate 5.

[0028] The drive motor is an asynchronous motor, and the asynchronous motor selected is a 0.75kW 6-pole motor. A special wear-resistant lifting rope is used. A nylon wheel rope reel is installed at the end of the output shaft of the drive motor and is wrapped around one end of the lifting rope to connect it. Finally, the electrolytic cell furnace door is smoothly raised and lowered through the lifting rope, while ensuring good insulation between the furnace door panel and the electrolytic cell.

[0029] Among the two support columns 4, a mechanical limiter 401 is provided on the side of the upper end of one of the support columns 4 close to the guide rail 3, and the highest position height of the furnace door panel 1 is limited by the mechanical limiter 401; a touch sensor 402 is provided on the side of the upper end of the other support column 4, and the touch sensor 402 is connected to the drive motor 6 circuit and stops the drive motor 6 when the top of the furnace door panel 1 contacts the touch sensor 402.

[0030] An emergency socket 9 for convenient emergency power supply is fixedly connected to the top of the end column 2 of the electrolytic cell.

[0031] Mechanical and electrical limit switches are installed at the same height on the upper end of the support column to accurately control the opening and closing stroke of the furnace door. Furthermore, this solution is equipped with a hand handle and emergency latch. In the event of motor failure or power source abnormality, it can be used in conjunction with other opening mechanisms to ensure that daily production of the electrolyzer is not affected.

[0032] A control panel 10 is fixedly connected to the top of the end column 2 of the electrolytic cell. The control panel 10 is electrically connected to a control module arranged in a control box. The signal input end of the control module is electrically connected to the control panel 10 to receive an effect signal. The signal output end of the control module is connected to the input end of the manual-automatic switching valve. One of the output ends of the manual-automatic switching valve is electrically connected to the drive motor, and the other output end of the manual-automatic switching valve is electrically connected to the shelling cylinder after passing through the solenoid valve.

[0033] The control box is approximately 300×400mm in size and can be installed at a safe and convenient location on site. It includes hardware configurations such as an air switch, adapter, and control module. The control module uses the STM32F1 series controller to stably receive electrolytic cell effect signals and control instructions, and safely and reliably control actuators such as drive motors and cylinders to achieve automated control.

[0034] This embodiment introduces the control operation of the furnace door in detail using two scenarios: electrolytic cell effect processing (full-automatic control of the furnace door) and electrolytic cell aluminum tapping operation (semi-automatic operation of the furnace door).

[0035] 1. Electrolytic cell effect treatment (full automatic control of furnace door);

[0036] (1) The electrolytic cell effect light turns on and the effect signal is input to the furnace door control module.

[0037] (2) The furnace door control module sends the first signal to control the solenoid valve and the shelling cylinder to automatically shell the material at the outlet. After the shelling cylinder is turned on, a certain amount of protective coating will flow out and be applied to the metal surface to achieve a metal protection effect;

[0038] (3) The furnace door control module sends a second signal to control the drive motor to automatically open the electrolytic cell furnace door to the upper limit.

[0039] (4) The operator directly uses the effect rod to perform effect processing operations.

[0040] (5) The sudden effect of the electrolytic cell is processed, the voltage is stable, and the furnace door closes automatically.

[0041] 2. Aluminum tapping operation of electrolytic cell (semi-automatic operation of furnace door);

[0042] (1) Operate the electrolytic cell control machine and give aluminum operation signals.

[0043] (2) Operate on the control panel of the fully automatic insulated furnace door and give operation signals.

[0044] (3) After the fully automatic insulated furnace door realizes the automatic shelling process at the discharge port through the solenoid valve and the shelling cylinder, the furnace door automatically opens and rises to the upper limit.

[0045] (4) The operator completes the aluminum discharge operation of the target tank in accordance with the operating procedures.

[0046] (5) The operator instructs the overhead crane to move the lifting bag away from the electrolytic cell and gives a command signal on the control panel, and the electrolytic cell furnace door automatically closes.

[0047] The utility model adopts a design in which a guide rail is provided on the end column and the furnace door panel is driven by a driving mechanism, so that people can use a longitudinal sliding method to realize the opening and closing operation of the furnace door panel to the electrolytic cell. It changes the traditional double-leaf design concept of the electrolytic cell furnace door, avoids the influence of the negative pressure in the electrolytic cell on the opening of the furnace door panel, makes the opening and closing operation of the furnace door panel convenient and fast, saves time and labor, and improves the use effect of the electrolytic furnace; and, in this structure, the furnace door panel is an integral structure, and the two sides of the furnace door panel edge are limited by the guide rails. It is not easy to deform or the door gap increases during use. At the same time, an insulating stopper is provided at the bottom end of the furnace door panel to seal the gap between the furnace door panel and the end face of the electrolytic cell shell, which effectively improves the insulation and sealing of the electrolytic cell when the furnace door is closed, and further improves the use effect of the electrolytic cell.

Claims

1. A 200kA electrolytic cell insulated furnace door, comprising a furnace door panel for controlling the opening and closing state of the electrolytic cell, the furnace door panel being arranged on one side of the end column of the electrolytic cell; characterized in that: Guide rails are fixedly connected between the opposite surfaces of the two end columns of the electrolytic cell, and the length direction of the guide rails is perpendicular to the ground. The furnace door panel is arranged between the two guide rails and can slide along the length direction of the guide rails; a driving mechanism is provided above the cover plate of the electrolytic cell, and the driving mechanism is connected to the furnace door panel and drives the furnace door panel to perform longitudinal opening and closing movements; an insulating stopper is fixedly connected to the bottom end of the furnace door panel; when the furnace door panel is closed, the bottom end of the insulating stopper contacts the end face of the electrolytic cell shell and realizes the sealing effect of the electrolytic cell.

2. The 200kA electrolytic cell insulated furnace door according to claim 1, characterized in that: The driving mechanism includes a support column, a top plate, a driving motor, a guide wheel, and a hanging rope. There are two support columns, and the two support columns are symmetrically fixed on the top of the cover plate of the electrolytic cell. One side of the two support columns is fixedly connected to the side walls of the two guide rails to improve the stability of the guide rails; the top ends of the two support columns are fixedly connected to the top plate, and the bottom ends of the top plate are fixedly connected to the driving motor. The output shaft of the driving motor is wound around and connected to one end of the hanging rope, and the other end of the hanging rope is connected to the top of the furnace door panel after being guided by the guide wheel arranged at the bottom end of the top plate.

3. The 200kA electrolytic cell insulated furnace door according to claim 2, characterized in that: The furnace door panel is in the shape of a vertically arranged rectangular plate, and a plurality of pulleys are arranged on both sides of the width direction of the furnace door panel, and the plurality of pulleys are arranged in sequence along the height direction of the furnace door panel; the pulleys on both sides of the width direction of the furnace door panel are respectively embedded in two guide rails and are slidably connected to the guide rails.

4. The 200kA electrolytic cell insulated furnace door according to claim 3, characterized in that: The insulating stopper is in the shape of a rectangular plate, the top of the insulating stopper is fixedly connected to the bottom of the furnace door panel, and the bottom of the insulating stopper contacts the end face of the electrolytic cell shell when the furnace door panel is closed.

5. The 200kA electrolytic cell insulated furnace door according to claim 4, characterized in that: A mechanical limiter is provided on the side of the upper end of one of the support columns close to the guide rail, and the maximum position height of the furnace door panel is limited by the mechanical limiter; a touch sensor is provided on the side of the upper end of the other support column, and the touch sensor is connected to the drive motor circuit and stops the drive motor when the top of the furnace door panel touches the touch sensor.

6. The 200kA electrolytic cell insulated furnace door according to claim 5, characterized in that: A handle that is convenient for holding is fixedly connected to the outer end surface of the furnace door panel.

7. The 200kA electrolytic cell insulated furnace door according to claim 6, characterized in that: An emergency socket for convenient emergency power supply is fixedly connected to the top of the end column of the electrolytic cell.

8. The 200kA electrolytic cell insulated furnace door according to claim 7, characterized in that: A control panel is fixedly connected to the top of the end column of the electrolytic cell, and the control panel is electrically connected to a control module arranged in a control box. The signal input end of the control module is used to access the effect signal on the control panel, and the signal output end of the control module is connected to the input end of the manual-automatic switching valve. One of the output ends of the manual-automatic switching valve is electrically connected to the drive motor, and the other output end of the manual-automatic switching valve is electrically connected to the shelling cylinder after passing through the solenoid valve.

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