A device for measuring the height of electrode paste column in a calcium carbide plant

Abstract

This utility model relates to the field of electrode paste column technology, specifically to a device for measuring the height of electrode paste columns in a calcium carbide plant. It includes a mounting plate, with three connecting plates arranged in a circular array fixedly connected to the bottom end of the mounting plate. Each connecting plate has a laser level gauge slidably contacted at its bottom end. A first rotating ring is rotatably connected to the bottom end of the mounting plate, and a bearing is fixedly connected to the bottom end of the first rotating ring. Compared with existing technologies, this utility model achieves automated, multi-point random sampling through a friction-driven random positioning system. This significantly improves the safety and efficiency of measurement and effectively avoids measurement errors caused by irregularities on the electrode paste column surface (such as gaps or inclination). Its core lies in using friction blocks with varying roughness to cause the rotating ring to rotate asynchronously and randomly, thereby controlling the final measurement position of the laser level gauge through a sliding rheostat, ensuring the objectivity and unbiasedness of the sampling.

Description

Technical Field

[0001] This utility model relates to the field of electrode paste column technology, specifically to a device for measuring the height of electrode paste columns in calcium carbide plants. Background Technology

[0002] Calcium carbide (CaC2) is an important industrial raw material, mainly produced through a high-temperature electric arc reaction in a calcium carbide furnace. Its production process involves several key steps and equipment. The electrode system is a core component of the calcium carbide furnace, with the electrode paste column serving as both a conductive and reaction medium; its height directly affects the stability and efficiency of calcium carbide production.

[0003] Traditionally, the height measurement of electrode paste columns has relied on manual operation, such as handheld laser rangefinders or hammer-type measuring instruments. In recent years, fixed laser level gauges have also been gradually applied, but there are still many technical limitations.

[0004] Existing methods for measuring the height of electrode paste columns have significant shortcomings: manual measurement is inefficient, unsafe, and difficult to achieve continuous monitoring; while fixed laser level gauges can achieve automation, their single-point fixed measurement method makes it difficult to handle gaps or inclined surfaces formed by the blocky structure of the electrode paste, which easily leads to measurement failure. Although there is a demand in the industry for multi-point, randomized measurement inside the electrode cylinder, it has not yet been effectively applied due to technical bottlenecks, making it difficult to guarantee the authenticity and accuracy of the electrode paste column height data, thus hindering the intelligent and refined development of calcium carbide production. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, this utility model provides a device for measuring the height of electrode paste column in calcium carbide plants.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a device for measuring the height of an electrode paste column in a calcium carbide plant, including a mounting plate. Three connecting plates arranged in a circular array are fixedly connected to the bottom end of the mounting plate. Each connecting plate has a laser level gauge slidably contacted at its bottom end. A first rotating ring is rotatably connected to the bottom end of the mounting plate. A bearing is fixedly connected to the bottom end of the first rotating ring. A second rotating ring is fixedly connected to the bottom end of the bearing. An electromagnetic telescopic rod is fixedly connected to the inner circumferential wall of the second rotating ring. A fixed ring is fixedly connected to the telescopic end of the electromagnetic telescopic rod. The inner wall of the fixed ring is rotatably connected to the outer wall of the laser level gauge.

[0008] According to the above-mentioned electrode paste column height measuring device for calcium carbide plants, an arc-shaped resistance plate is fixedly connected to the inner wall of the first rotating ring, and a conductive sheet is fixedly connected to the telescopic end of the electromagnetic telescopic rod. The conductive sheet slides in contact with the outer wall of the arc-shaped resistance plate, and the conductive sheet and the arc-shaped resistance plate form a sliding rheostat. The sliding rheostat is electrically connected to the electromagnetic telescopic rod.

[0009] According to the above-mentioned electrode paste column height measuring device for calcium carbide plants, a drive motor is fixedly connected to the top of the mounting plate, a rotating rod is fixedly connected to the output end of the drive motor, a connecting pipe is fixedly connected to the bottom end of the rotating rod, and a bidirectional exhaust pump is fixedly connected to the bottom end of the connecting pipe and connected to the output end of the bidirectional exhaust pump.

[0010] According to the above-mentioned electrode paste column height measuring device for calcium carbide plants, a ring is fixedly connected to the outer wall of the connecting tube, and an expansion groove is formed in a circumferential array on the inner wall of the ring. A sliding block is slidably connected to the inner wall of the expansion groove, and a spring is fixedly connected between each sliding block and each expansion groove. A friction block is fixedly connected to the outer wall of each sliding block.

[0011] According to the above-mentioned electrode paste column height measuring device for calcium carbide plants, each of the friction blocks is in intermittent contact with the outer walls of the first rotating ring and the second rotating ring, and the roughness of the friction surface of each friction block is inconsistent.

[0012] According to the above-mentioned electrode paste column height measuring device for calcium carbide plants, each of the aforementioned expansion grooves and connecting pipes is provided with a ventilation groove.

[0013] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0014] Compared with the prior art, this utility model achieves automated, multi-point random sampling through a random positioning system driven by friction. This not only significantly improves the safety and efficiency of measurement, but also effectively avoids measurement errors caused by irregularities (such as gaps or inclinations) on the surface of the electrode paste column. Its core lies in using friction blocks with varying roughness to make the rotating ring rotate asynchronously and randomly, and then controlling the final measurement position of the laser level instrument through a sliding rheostat, ensuring the objectivity and unbiasedness of sampling, thereby obtaining more realistic and accurate height data. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2

[0018] Figure 3 This is a partial three-dimensional structural diagram of the present invention.

[0019] Reference numerals: 1. Mounting plate; 2. Connecting plate; 3. Laser level gauge; 4. First rotating ring; 5. Second rotating ring; 6. Electromagnetic telescopic rod; 7. Fixed ring; 8. Arc-shaped resistance plate; 9. Conductive sheet; 10. Drive motor; 11. Rotating rod; 12. Connecting pipe; 13. Bidirectional exhaust pump; 14. Circular ring; 15. Telescopic groove; 16. Sliding block; 17. Spring; 18. Friction block; 19. Ventilation groove. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] The present invention will be further described below with reference to the embodiments.

[0022] Example: Refer to Figures 1 to 3 A device for measuring the height of an electrode paste column in a calcium carbide plant includes a mounting plate 1. Three connecting plates 2 arranged in a circular array are fixedly connected to the bottom end of the mounting plate 1. Each connecting plate 2 has a laser level gauge 3 slidably contacted at its bottom end. A first rotating ring 4 is rotatably connected to the bottom end of the mounting plate 1. A bearing is fixedly connected to the bottom end of the first rotating ring 4. A second rotating ring 5 is fixedly connected to the bottom end of the bearing. An electromagnetic telescopic rod 6 is fixedly connected to the inner circumferential wall of the second rotating ring 5. A fixed ring 7 is fixedly connected to the telescopic end of the electromagnetic telescopic rod 6. The inner wall of the fixed ring 7 is rotatably connected to the outer wall of the laser level gauge 3.

[0023] An arc-shaped resistance plate 8 is fixedly connected to the inner wall of the first rotating ring 4, and a conductive sheet 9 is fixedly connected to the telescopic end of the electromagnetic telescopic rod 6. The conductive sheet 9 slides in contact with the outer wall of the arc-shaped resistance plate 8, and the conductive sheet 9 and the arc-shaped resistance plate 8 form a sliding rheostat. The sliding rheostat is electrically connected to the electromagnetic telescopic rod 6.

[0024] A drive motor 10 is fixedly connected to the top of the mounting plate 1. A rotating rod 11 is fixedly connected to the output end of the drive motor 10. A connecting pipe 12 is fixedly connected to the bottom end of the rotating rod 11. A bidirectional exhaust pump 13 is fixedly connected to the bottom end of the connecting pipe 12 and is connected to the output end of the bidirectional exhaust pump 13.

[0025] A ring 14 is fixedly connected to the outer wall of the connecting pipe 12. The inner wall of the ring 14 is provided with a circumferential array of telescopic grooves 15. A sliding block 16 is slidably connected to the inner wall of the telescopic groove 15. A spring 17 is fixedly connected between each sliding block 16 and each telescopic groove 15. A friction block 18 is fixedly connected to the outer wall of each sliding block 16.

[0026] Each friction block 18 is in intermittent contact with the outer wall of the first rotating ring 4 and the second rotating ring 5, and the roughness of the friction surface of each friction block 18 is not consistent.

[0027] Each expansion joint 15 and the connecting pipe 12 is provided with a ventilation groove 19.

[0028] The core of this utility model patent lies in realizing an intermittent, randomized automatic positioning mechanism, which aims to completely eliminate human intervention and ensure absolutely objective multi-point random sampling of the electrode paste column, thereby greatly improving the authenticity and accuracy of the measurement.

[0029] The device operates on a fixed cycle: "extend (10 seconds) – retract and come to rest." During the 10-second "extend" period, the friction blocks 18 are in contact with the outer walls of the first rotating ring 4 and the second rotating ring 5. Because the roughness of each friction block 18 is intentionally set to be inconsistent, the frictional torque they generate on the two rotating rings differs significantly. This design causes the first rotating ring 4 and the second rotating ring 5 to produce different rotational speeds and asynchronous angular displacements within the same 10-second drive period.

[0030] The extension and retraction process of friction block 18 is as follows: by controlling the bidirectional exhaust pump 13 to supply air into the connection pipe 12, the air enters the extension groove 15 through the ventilation groove 19. Through the gas pressure, the sliding block 16 and friction block 18 are pushed forward and then come into contact with the first rotating ring 4 and the second rotating ring 5. This is the extension process.

[0031] The air intake and exhaust of the bidirectional exhaust pump 13 are switched, thereby expelling the air in the telescopic groove 15. The friction block 18 is then reset by the tension of the spring 17. This is the reset process.

[0032] When the 10-second drive ends, the friction block 18 retracts, and the rotating rings continue to rotate before gradually stopping. At this point, the two rings remain in an unpredictable random position determined by the combined effect of random frictional forces. The random position of the rings directly determines the resistance value of the sliding rheostat inside, thus changing the current in the circuit. Since the sliding rheostat is electrically connected to the electromagnetic telescopic rod 6, the extension length of the electromagnetic telescopic rod 6 is directly controlled by the current through the sliding rheostat. By adjusting both, the position of the laser level gauge 3 is determined.

[0033] Once the position of the laser level meter 3 is completely determined, the system immediately triggers the laser level meter 3 to perform a distance measurement operation. The laser level meter 3 emits a laser beam toward the surface of the electrode paste column and receives the reflected signal. By calculating the laser flight time, the distance to the material surface at the random measurement point is accurately obtained.

[0034] After completing the data acquisition at one measurement point, the system waits for the current measurement cycle to end and then enters the next working cycle to achieve systematic random sampling of the electrode paste column surface. This randomness, guaranteed by physical and mechanical principles, eliminates the influence of any subjective selection or fixed pattern on the measurement point, ensuring the independence and unbiasedness of each measurement data, and ultimately providing the most objective, accurate and reliable measurement solution to date for the electrode paste column height.

[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for measuring the column height of electrode paste in a calcium carbide plant, characterized by, The device includes a mounting plate (1), with three connecting plates (2) arranged in a circular array fixedly connected to the bottom end of the mounting plate (1). The bottom end of each connecting plate (2) is in sliding contact with a laser level gauge (3). The bottom end of the mounting plate (1) is rotatably connected to a first rotating ring (4). The bottom end of the first rotating ring (4) is fixedly connected to a bearing. The bottom end of the bearing is fixedly connected to a second rotating ring (5). The inner circumferential wall of the second rotating ring (5) is fixedly connected to an electromagnetic telescopic rod (6). The telescopic end of the electromagnetic telescopic rod (6) is fixedly connected to a fixed ring (7). The inner wall of the fixed ring (7) is rotatably connected to the outer wall of the laser level gauge (3).

2. A device for measuring the height of a column of electrode paste in an acetylene plant according to claim 1, characterized in that An arc-shaped resistance plate (8) is fixedly connected to the inner wall of the first rotating ring (4), and a conductive sheet (9) is fixedly connected to the telescopic end of the electromagnetic telescopic rod (6). The conductive sheet (9) slides in contact with the outer wall of the arc-shaped resistance plate (8), and the conductive sheet (9) and the arc-shaped resistance plate (8) form a sliding rheostat. The sliding rheostat is electrically connected to the electromagnetic telescopic rod (6).

3. The electrode paste column height measuring device for a calcium carbide plant according to claim 2, characterized in that, The top of the mounting plate (1) is fixedly connected to a drive motor (10), the output end of the drive motor (10) is fixedly connected to a rotating rod (11), the bottom end of the rotating rod (11) is fixedly connected to a connecting pipe (12), the bottom end of the connecting pipe (12) is fixedly connected to a bidirectional exhaust pump (13), and is connected to the output end of the bidirectional exhaust pump (13).

4. The electrode paste column height measuring device for a calcium carbide plant according to claim 3, characterized in that, The outer wall of the connecting pipe (12) is fixedly connected to a ring (14), and the inner wall of the ring (14) is provided with a circumferential array of expansion grooves (15). The inner wall of the expansion groove (15) is slidably connected to a sliding block (16), and a spring (17) is fixedly connected between each sliding block (16) and each expansion groove (15). The outer wall of each sliding block (16) is fixedly connected to a friction block (18).

5. The electrode paste column height measuring device for a calcium carbide plant according to claim 4, characterized in that, Each of the friction blocks (18) is in intermittent contact with the outer walls of the first rotating ring (4) and the second rotating ring (5), and the roughness of the friction surfaces of each friction block (18) is inconsistent.

6. The electrode paste column height measuring device for a calcium carbide plant according to claim 4, characterized in that, Each of the aforementioned expansion joints (15) and connecting pipes (12) is provided with a ventilation groove (19).

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