Method for automatically measuring height of anode of aluminum electrolysis crown block

Abstract

The invention relates to the field of automatic height measurement, and discloses an automatic height measurement method for an anode of an aluminum electrolysis crown block, which comprises the following steps of: 1, measuring the height of the upper surface of a residual anode in an electrolytic cell; step 2, lifting the anode scrap out of the electrolytic cell to an open space, and measuring the thickness of the anode scrap; 3, the new pole is hoisted to the open space, and the thickness of the new pole is measured; and 4, hoisting the new pole into the electrolytic cell, and calculating the height of the upper surface of the new pole according to the thickness of the new pole and the thickness of the residual pole, so that the heights of the lower surfaces of the new pole and the old pole are consistent. The automatic height measurement of the anode of the electrolysis multifunctional crown block is realized, the anode changing operation efficiency of the crown block is improved, the personnel operation flow is reduced, the safety risk in the operation process is reduced, and the automation of residual anode lifting, residual anode measurement, new anode measurement and new anode positioning in the anode changing operation is realized.

Description

Technical Field

[0001] This invention relates to the field of automatic height measurement, and specifically to an automatic height measurement method for the anode of an aluminum electrolysis overhead crane. Background Technology

[0002] The multi-functional overhead crane for electrolysis is mainly responsible for important operations such as aluminum tapping, shell breaking, material unloading, and electrode changing. Currently, during electrode changing operations, the crane uses a measuring tape for positioning and measurement. However, the measuring tape is prone to deformation after prolonged use in high-temperature environments. This traditional manual measurement method is affected by the subjectivity and work habits of the operators, leading to discrepancies in measurement results between different operators. This has a certain impact on the process conditions of the electrolytic cell. Furthermore, during manual measurement, electrolysis workers not only have to endure the intense heat of the molten aluminum surrounding the hot electrodes (around 900℃), but also face the risk of burns and being struck by hot metal objects.

[0003] Therefore, an automatic height measurement device for the anode of a multifunctional electrolytic crane is needed to realize automatic height measurement of the anode of the multifunctional electrolytic crane, improve the efficiency of the crane's electrode replacement operation, reduce the number of personnel operations, reduce the safety risks in the operation process, and automate all the processes of lifting the residual electrode, measuring the residual electrode, measuring the new electrode, and positioning the new electrode in the electrode replacement operation. Summary of the Invention

[0004] This invention aims to provide an automatic height measurement method for the anode of an aluminum electrolysis overhead crane, thereby realizing automatic height measurement of the anode of a multi-functional electrolysis overhead crane, improving the efficiency of the crane's electrode replacement operation, reducing personnel operation procedures, lowering safety risks during the operation, and automating the entire process of lifting the residual electrode, measuring the residual electrode, measuring the new electrode, and positioning the new electrode during the electrode replacement operation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an automatic height measurement method for the anode of an aluminum electrolysis crane, comprising the following steps: Step 1: Measure the height of the upper surface of the residual electrode in the electrolytic cell; Step 2: Lift the residual electrode out of the electrolytic cell to an open area and measure the thickness of the residual electrode; Step 3: Hoist the new electrode to an open area and measure its thickness; Step 4: Hoist the new electrode into the electrolytic cell. Based on the thickness of the new electrode and the thickness of the old electrode, calculate the height of the upper surface of the new electrode so that the lower surface heights of the new electrode and the old electrode are the same.

[0006] The beneficial effects of this plan are: 1. By using a new type of anode height measurement system to measure the position and height of the residual electrode in the cell, the height of the residual electrode itself, and the height of the new electrode itself, the height difference between the old and new electrodes can be obtained. The distance from the initial position of the new electrode to the mounting point of the electrolytic cell can be automatically calculated, i.e., the placement height of the new electrode.

[0007] 2. The replacement of new and old electrodes and the thickness measurement are completed in an open area, which is more complete and reliable and ensures the safety of operators.

[0008] Furthermore, in step one, the height difference 'a' between the upper surface of the residual electrode in the electrolytic cell and the reference surface is measured; In step two, the height difference b between the upper surface of the residual electrode and the reference surface is measured, and the height difference h between the lower surface of the residual electrode and the reference surface is measured. In step three, measure the height difference c between the upper surface of the new electrode and the reference plane. Measure the height difference n between the lower surface of the new electrode and the reference plane. In step four, the new electrode is hoisted into the electrolytic cell and fixed after the height of the upper surface of the new electrode is d. in, d=ae; e = (nc) - (hb); The height difference between the upper surfaces of the new electrode and the old electrode.

[0009] Furthermore, in step one, an overhead crane, an electrolytic cell, and an open space are prepared. The overhead crane is used to transport new and old electrodes back and forth above the electrolytic cell and the open space. The lower surface of the overhead crane is equipped with a hydraulic lifting mechanism, which is detachably connected to the old electrode.

[0010] Furthermore, the overhead crane is also equipped with a travel measuring device. With the lower surface of the overhead crane as the reference plane, the travel measuring device is used to measure the height difference between the reference plane and the target position, which includes the open ground, the upper surface of the residual pole, and the upper surface of the new pole.

[0011] Furthermore, a load cell is detachably connected to the overhead crane, which is used to achieve stable positioning of the physical reference.

[0012] Furthermore, the overhead crane is equipped with a control unit and a temperature control unit; The control unit is electrically connected to the hydraulic lifting mechanism and the stroke measuring device, respectively, and the temperature control unit is used to cool the laser rangefinder.

[0013] Furthermore, the travel measurement device is a laser rangefinder sensor.

[0014] This solution also has the following effects: 1. By electrically connecting the control unit with the hydraulic lifting mechanism and the stroke measuring device, the control unit can control the measuring unit on the lifting device to obtain the descent and ascent height of the crane more accurately. Therefore, the distance from the bottom surface of the new and old anodes to the preset position point measured by the anode height measuring system is also more accurate.

[0015] 2. By sensing the changes in the weight of the new and old poles through weighing sensors, it can determine whether the poles have been lifted or installed in place, thus achieving more accurate positioning.

[0016] 3. The new intelligent anode height measurement and electrode switching device not only reduces measurement errors, but also eliminates the need for personnel to approach the electrolytic cell to mark lines, thus ensuring the personal safety of operators. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the entire process of an example. Detailed Implementation

[0018] The following detailed description illustrates the specific implementation method: Example An automatic height measurement method for the anode of an aluminum electrolysis overhead crane. Figure 1 The four parts from left to right correspond to steps one through four, including the following steps: Step 1: Prepare the overhead crane, electrolytic cell, and open space. The overhead crane is used to transport new and old electrodes back and forth above the electrolytic cell and open space. The lower surface of the overhead crane is equipped with a hydraulic lifting mechanism, which can be detachably connected to the old electrode.

[0019] The overhead crane is also equipped with a travel measurement device, which is a laser rangefinder sensor used to identify the height of new and old anodes. Using the lower surface of the crane as a reference plane, the travel measurement device measures the height difference between the reference plane and the target position, including open ground, the upper surface of the residual anode, and the upper surface of the new anode. A load cell is detachably connected to the crane, used for stable positioning of the physical reference. The crane also has a control unit and a temperature control unit; the control unit is electrically connected to both the hydraulic lifting mechanism and the travel measurement device, while the temperature control unit is used to cool the laser rangefinder sensor.

[0020] The laser rangefinder sensor is used to measure the height of the upper surface of the residual electrode in the electrolytic cell; the height difference 'a' between the upper surface of the residual electrode in the electrolytic cell and the reference surface is measured; in this embodiment, after the height is measured, the probe of the laser rangefinder sensor is immediately retracted.

[0021] Step 2: The hydraulic lifting mechanism lifts the residual electrode to the upper limit position, the overhead crane moves to above the open ground, and the residual electrode is placed on the open ground. After the weighing sensor displays zero weight, the hydraulic lifting mechanism stops descending. Lift the electrolytic cell to an open ground and measure the thickness of the residual electrode; measure the height difference b between the upper surface of the residual electrode and the reference surface, and measure the height difference h between the lower surface of the residual electrode and the reference surface. Step 3: Hoist the new electrode to an open area and measure its thickness; measure the height difference c between the upper surface of the new electrode and the reference surface; measure the height difference n between the lower surface of the new electrode and the reference surface. Step 4: Hoist the new electrode into the electrolytic cell. Based on the thickness of the new electrode and the thickness of the residual electrode, calculate the height of the upper surface of the new electrode, ensuring that the lower surfaces of the new and old electrodes are at the same height. Then fix the new electrode with a height of d. d=ae; e = (nc) - (hb); The height difference between the upper surfaces of the new electrode and the old electrode.

[0022] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should 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 method for automatically measuring the height of an anode of an aluminum electrolysis crane, characterized by, The method comprises the following steps: Step one, measure the height of the upper surface of the residual electrode in the electrolytic cell; Step two, hoist the residual electrode out of the electrolytic cell to the empty ground and measure the thickness of the residual electrode; Step three, hoist the new electrode to the empty ground and measure the thickness of the new electrode; Step four, hoist the new electrode into the electrolytic cell, and calculate the height of the upper surface of the new electrode according to the thickness of the new electrode and the thickness of the residual electrode, so that the lower surface heights of the new electrode and the old electrode are consistent.

2. The method for automatically measuring the height of an anode of an aluminum electrolysis crane according to claim 1, characterized in that: In step one, measure the height difference a between the upper surface of the residual electrode in the electrolytic cell and the reference surface; In step two, measure the height difference b between the upper surface of the residual electrode and the reference surface, and measure the height difference h between the lower surface of the residual electrode and the reference surface; In step three, measure the height difference c between the upper surface of the new electrode and the reference surface, and measure the height difference n between the lower surface of the new electrode and the reference surface; In step four, hoist the new electrode into the electrolytic cell so that the height of the upper surface of the new electrode is d, and then fix it; Wherein, d=a-e; e=(n-c)-(h-b); e is the height difference between the upper surfaces of the new electrode and the old electrode.

3. The method of claim 2, wherein the method comprises: In step one, prepare the crown block, the electrolytic cell and the empty ground, the crown block is used for transporting the new electrode and the old electrode back and forth above the electrolytic cell and the empty ground, the lower surface of the crown block is provided with a hydraulic lifting mechanism, and the hydraulic lifting mechanism is detachably connected with the old electrode.

4. The method of claim 3, wherein the method comprises: The crown block is also provided with a travel measuring device, the lower surface of the crown block is used as a reference surface, and the travel measuring device is used for measuring the height difference between the reference surface and a target position, the target position including the empty ground, the upper surface of the residual electrode and the upper surface of the new electrode.

5. The method of claim 4, wherein the method comprises: The crown block is detachably connected with a weighing sensor, and the weighing sensor is used for realizing stable positioning of the physical reference.

6. The method of claim 5, wherein the method further comprises: The crown block is provided with a control unit and a temperature control unit; The control unit is electrically connected with the hydraulic lifting mechanism and the travel measuring device respectively, and the temperature control unit is used for cooling the laser ranging sensor.

7. The method of claim 6, wherein the method further comprises: determining the height of the anode by using the camera to capture an image of the anode; and determining the height of the anode by using the camera to capture an image of the anode. The travel measuring device is a laser ranging sensor.

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