Calcium carbide furnace electrode pressure release automatic measuring device

Abstract

The invention relates to the technical field of calcium carbide furnaces, and discloses a calcium carbide furnace electrode pressure release automatic measuring device, which comprises an electromagnetic seat system, a stay wire sensor and a protection assembly, and is characterized in that an electromagnetic seat is mounted in a furnace body wall mounting cavity, generates a periodically changing magnetic field after being connected with alternating current, and penetrates through a furnace body to act on a conductive molten pool and furnace charge particles in the furnace; a stay wire sensor is connected with an electrode column through a fixing frame, a rotating roller in a shell of the stay wire sensor is connected with an encoder, a measuring wire is wound on a winding drum with a spiral wire groove, and a torsion spring between the winding drum and the rotating roller provides stable tension to ensure that the measuring wire is always tightened. The balls of the positioning ring convert sliding friction into rolling friction, and the encoder accurately captures the displacement of the measuring line and feeds back the position change of the electrode in real time. An assembly cylinder of the protection assembly is coaxial with a pay-off window, a high-hardness ceramic scraper is arranged in the assembly cylinder, surface dust, tar and slag are scraped off by clinging to a measuring line through a coil spring, impurities are prevented from entering the sensor to clamp components, and the maintenance period is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of calcium carbide furnace, and particularly relates to an automatic measuring device for electrode pressure release of calcium carbide furnace. BACKGROUND

[0002] As an important basic chemical raw material, calcium carbide is widely used in plastic, synthetic fiber, metallurgy and other fields, and its production mainly depends on calcium carbide furnace. The core working principle of calcium carbide furnace is to pass strong current through the electrode to form a high-temperature arc in the furnace, so that the quicklime and coke react to generate calcium carbide at high temperature. In this process, the electrode as a current carrier and arc source will be continuously consumed due to high-temperature burning, chemical reaction and mechanical wear, and the electrode length needs to be continuously supplemented through "pressure release" operation, that is, the electrode column is pushed down through the pressure release mechanism to maintain the effective length of the electrode inserted into the furnace stable, so as to ensure stable furnace condition and sufficient reaction.

[0003] At present, there are mainly two ways to measure the electrode pressure release of calcium carbide furnace: Firstly, manual measurement is mainly used, and the electrode pressure release measurement mainly depends on manual observation and manual recording: the operator needs to observe the electrode mark line by naked eye, and use a ruler or a measuring rod to measure the position difference before and after pressure release in the harsh environment of high temperature, high dust and strong electromagnetic radiation. This method not only has high labor intensity and dangerous operation environment, but also has large measurement error, which is difficult to match the demand of calcium carbide furnace on pressure release precision; Secondly, proximity switches, photoelectric encoders or linear displacement sensors are used for pressure release measurement, but a large amount of high-temperature dust, tar and corrosive gas are generated during the operation of calcium carbide furnace, which easily adheres to the surface of the sensor, causing false triggering of the proximity switch and interruption of the photoelectric encoder signal.

[0004] The precision of electrode pressure release directly determines the running efficiency, product quality and equipment safety of calcium carbide furnace: if the pressure release is insufficient, the effective length of the electrode is too short, which will cause unstable arc and low furnace temperature, not only reducing the yield and purity of calcium carbide, but also possibly causing local overheating due to poor electrode conduction; if the pressure release is excessive, the electrode is inserted too deep, which will cause the temperature of the furnace bottom to rise suddenly, accelerate the erosion of the furnace lining, and even cause safety accidents such as electrode breakage and short circuit. Therefore, real-time and accurate measurement of electrode pressure release displacement is the premise of realizing accurate control of electrode pressure release. SUMMARY

[0005] The technical problem to be solved by the present application is that the existing technology has the defect of inaccurate electrode column pressure release measurement, and therefore an automatic measuring device for electrode pressure release of calcium carbide furnace is proposed.

[0006] In order to achieve the above object, the technical scheme adopted by the present application is as follows: A calcium carbide furnace electrode pressure release automatic measuring device, comprising a furnace body, a mounting chamber is formed in the wall of the furnace body, an electromagnetic seat is mounted in the mounting chamber, a feeding port and a discharging port are formed in the top of the furnace body, the feeding port coincides with the axis of the furnace body, three electrode columns are mounted on the top of the furnace body, a fixing frame is arranged on one side of the electrode column, a pull wire sensor is fixedly connected to the surface of the fixing frame, and a protection assembly is arranged at the output end of the pull wire sensor; the pull wire sensor comprises a shell, a measuring wire is built-in in the shell, a pay-off window is formed in the bottom of the shell, a rotating roller is built-in in the shell, two partition plates are fixedly connected to the surface of the rotating roller in a sleeved manner, a winding drum is arranged between the two partition plates, the measuring wire is wound on the surface of the winding drum, and a torsional spring is arranged between the winding drum and the rotating roller; the protection assembly comprises an assembly cylinder, the assembly cylinder is fixedly connected to the pull wire sensor at the top, a plurality of mounting grooves are formed in the inner wall of the assembly cylinder, positioning grooves are formed on both sides of the groove wall of the mounting groove, a rotating rod is built-in in the mounting groove, a coiled spring is sleeved on both ends of the rotating rod, a pushing seat is fixedly connected to the surface of the rotating rod in a sleeved manner, a scraper is fixedly connected to one end of the pushing seat close to the center of the assembly cylinder, and the side, away from the pushing seat, of the scraper is in contact with the measuring wire.

[0007] Preferably, a fixed plate is fixedly connected to the surface of the shell in a sleeved manner, one end, away from the shell, of the fixed plate is fixedly connected to the fixing frame, an encoder is mounted at one end of the shell, and a sealing plate is fixedly connected to the end, away from the encoder, of the shell.

[0008] Preferably, the rotating roller coincides with the axis of the shell, and one end of the rotating roller is fixedly connected to the output end of the encoder.

[0009] Preferably, the winding drum is sleeved on the surface of the rotating roller, and a plurality of wire grooves are arranged on the surface of the winding drum in a uniform manner.

[0010] Preferably, one end of the measuring wire is fixedly connected to the winding drum, the other end of the measuring wire extends to the electrode column through the pay-off window and the protection assembly, and the end, away from the pull wire sensor, of the measuring wire is fixedly connected to the electrode column.

[0011] Preferably, the torsional spring is sleeved on the surface of the rotating roller, one end of the torsional spring is fixedly connected to the rotating roller, and the other end of the torsional spring is fixedly connected to the inner wall of the winding drum.

[0012] Preferably, positioning rings are sleeved on both ends of the winding drum, the positioning rings are symmetrically distributed along the axis of the winding drum, a fixed ring groove is formed in the inner ring wall of the positioning ring, a plurality of uniformly distributed rolling balls are mounted in the inner cavity of the fixed ring groove, the side, close to the rotating roller, of the rolling ball is in contact with the winding drum, and the side, away from the winding drum, of the positioning ring is fixedly connected to the partition plate.

[0013] Preferably, both ends of the rotating rod are rotationally connected with the bottom of the inner cavity of the positioning groove on both sides, and a plurality of mounting grooves are uniformly distributed around the assembly cylinder axis.

[0014] Preferably, the coil spring is arranged in the positioning groove, one end of the coil spring is fixedly connected with the inner wall of the positioning groove, and the other end of the coil spring is fixedly connected with the surface of the rotating rod.

[0015] Preferably, the assembly cylinder coincides with the axis of the pay-off window, and embedding grooves are formed on the upper and lower sides of the mounting groove, and the toggle seat is slidingly connected with the groove wall of the embedding groove.

[0016] The technical effects and advantages of the present application are as follows: The automatic measurement device for electrode pressure release of the calcium carbide furnace in the present application integrates electromagnetic drive and precise measurement technology, is composed of an electromagnetic seat system, a wire pulling sensor and a protection assembly, and is installed in a wall mounting chamber of a furnace body. After an alternating current is connected, a periodic changing magnetic field is generated, and acts on a conductive molten pool and furnace charge particles in the furnace through the furnace body. The change of the magnetic field causes the furnace charge to induce eddy current, reduces the volatilization of raw materials and oxidation of the electrode caused by local over-temperature, and washes the furnace bottom to prevent the deposition of unreacted materials and the formation of crust, thereby ensuring the stable embedding depth of the electrode and laying a foundation for arc discharge and reaction heat release.

[0017] The wire pulling sensor is connected with the electrode column through a fixing frame, a rotating roller in the shell of the wire pulling sensor is connected with an encoder, a measuring wire is wound on a winding drum with a spiral groove, a torsional spring between the winding drum and the rotating roller provides stable tension to ensure that the measuring wire is always taut, and the ball of the two end positioning rings converts sliding friction into rolling friction to reduce tension fluctuation and wear. The encoder accurately captures the displacement of the measuring wire and feeds back the change of the electrode position in real time. The assembly cylinder of the protection assembly is coaxial with the pay-off window, and a high-hardness ceramic scraper is arranged in the assembly cylinder. The coil spring tightly contacts the measuring wire to scrape off surface dust, tar and slag in both directions, so that impurities cannot enter the internal jamming components of the sensor, and the maintenance period is prolonged.

[0018] The electromagnetic seat improves the conversion rate of raw materials, reduces energy consumption, and prolongs the service life of the furnace body; the wire pulling sensor provides accurate data for electrode pressure release control, optimizes the lifting speed and pressure release frequency; and the protection assembly reduces equipment failure and labor cost. The whole realizes the efficiency and intelligence of calcium carbide production, and can reduce energy consumption, improve yield and reduce failure in long-term operation, thereby creating significant economic value. BRIEF DESCRIPTION OF DRAWINGS

[0019] The disclosure of the present application is explained with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes, and are not intended to limit the scope of protection of the present application. In the drawings, the same reference signs are used to refer to the same parts: Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the explosion structure of the furnace body of the present application; Figure 3 Figure is a schematic diagram of the pull wire sensor structure of the present application; Figure 4 Figure is a schematic diagram of the pull wire sensor and fixing plate assembly structure of the present application; Figure 5 Figure is a schematic diagram of the pull wire sensor and protection assembly assembly structure of the present application; Figure 6 Figure is a schematic diagram of the pull wire sensor explosion structure of the present application; Figure 7 Figure is a schematic diagram of the pull wire sensor explosion structure of the present application; Figure 8 Figure is a schematic diagram of the protection assembly and measuring line assembly structure of the present application; Figure 9 Figure is a schematic diagram of the protection assembly explosion structure of the present application; Figure 10 Figure is a schematic diagram of the Figure 8 Figure is a schematic diagram of the enlarged structure at A of the present application.

[0020] Figure legend: 1, furnace body; 101, mounting chamber; 102, electromagnetic seat; 103, feeding port; 104, discharging port; 2, electrode column; 201, fixed frame; 3, pull wire sensor; 301, shell; 302, fixing plate; 303, encoder; 304, closing plate; 305, measuring line; 306, pay-off window; 307, rotating roller; 308, partition plate; 309, winding drum; 310, wire slot; 311, torsion spring; 312, positioning ring; 313, fixed ring groove; 314, ball; 4, protection assembly; 401, assembly cylinder; 402, mounting groove; 403, positioning groove; 404, rotating rod; 405, winding spring; 406, push seat; 407, embedded groove; 408, scraper. DETAILED DESCRIPTION

[0021] It is easy to understand that, according to the technical solution of the present application, one of ordinary skill in the art can propose a plurality of structure modes and implementation modes that can be replaced with each other without changing the essential spirit of the present application. Therefore, the following detailed description and the accompanying drawings are only exemplary descriptions of the technical solution of the present application, and should not be regarded as the whole or as the limitation or restriction of the technical solution of the present application.

[0022] Reference Figures 1 to 10As shown, the present application provides a technical solution: a calcium carbide furnace electrode pressure release automatic measuring device, including furnace body 1, the wall of furnace body 1 is provided with installation chamber 101, the inside of installation chamber 101 is installed with electromagnetic seat 102, the top of furnace body 1 is provided with feed inlet 103 and discharge port 104, feed inlet 103 coincides with the axis of furnace body 1, the top of furnace body 1 is installed with three electrode columns 2, one side of electrode column 2 is provided with fixed frame 201, the surface of fixed frame 201 is fixedly connected with pull wire sensor 3, the output end of pull wire sensor 3 is provided with protection assembly 4;The electromagnetic seat 102 installed on the wall installation chamber 101 of furnace body 1, by accessing the periodic change magnetic field generated by alternating current, this magnetic field penetrates the wall of furnace body 1 and acts on the material in the furnace, so that the molten pool and furnace charge particles with conductivity become the force carrier of electromagnetic force.When the magnetic field intensity changes with the current, the eddy current will be induced in the furnace charge, the eddy current and the magnetic field interact to form directional thrust, which pushes the furnace charge to circulate along a specific trajectory.For lime and carbonaceous raw materials with large density difference, this electromagnetic force can effectively break the stratification phenomenon caused by gravity: the heavier lime particles are pushed upward, and the lighter carbonaceous raw materials are pulled downward, and in the continuous convection motion, the molecules are fully contacted.The mixing mode completely breaks down the "cold zone" formed by the accumulation of materials in the traditional calcium carbide furnace: those materials that are far away from the high-temperature area of the electrode and difficult to react are constantly driven into the high-temperature reaction area by electromagnetic force, while the calcium carbide melt generated by reaction is taken away from the high-temperature center in time to avoid overburning or decomposition caused by long-term residence.Meanwhile, the turbulent effect produced by electromagnetic stirring can quickly transfer heat, making the temperature field distribution in the furnace more uniform, and the local overheating point that may occur is homogenized, which not only reduces the loss of raw materials caused by high temperature volatilization, but also avoids the problem of accelerated electrode oxidation caused by local overheating.In addition, the continuous flow of furnace charge can also flush the bottom of the furnace, preventing unreacted materials from depositing on the bottom to form a crust, ensuring that the electrode can always maintain a reasonable embedding depth, providing a basic condition for stable arc discharge and reaction heat release.

[0023] Meanwhile, the shell 301 is provided with a fixed plate 302 fixedly sleeved on the surface of the shell 301, one end of the fixed plate 302 away from the shell 301 is fixedly connected with the fixed frame 201, one end of the shell 301 is provided with an encoder 303, one end of the shell 301 away from the encoder 303 is fixedly connected with a closing plate 304, the shell 301 is internally provided with a measuring line 305, a pay-off window 306 is formed in the bottom of the shell 301, the shell 301 is internally provided with a rotating roller 307, the rotating roller 307 coincides with the axis of the shell 301, one end of the rotating roller 307 is fixedly connected with the output end of the encoder 303, two partition plates 308 are fixedly sleeved and connected on the surface of the rotating roller 307, a winding drum 309 is arranged between the two partition plates 308, the winding drum 309 is sleeved on the surface of the rotating roller 307, the measuring line 305 is wound on the surface of the winding drum 309, one end of the measuring line 305 is fixedly connected with the winding drum 309, the other end of the measuring line 305 extends to the electrode column 2 through the pay-off window 306 and the protection assembly 4, one end of the measuring line 305 away from the pull wire sensor 3 is fixedly connected with the electrode column 2, a plurality of uniformly arranged line grooves 310 are formed in the surface of the winding drum 309, a torsional spring 311 is arranged between the winding drum 309 and the rotating roller 307, the torsional spring 311 is sleeved on the surface of the rotating roller 307, one end of the torsional spring 311 is fixedly connected with the rotating roller 307, the other end of the torsional spring 311 is fixedly connected with the inner wall of the winding drum 309, positioning rings 312 are sleeved and arranged at both ends of the winding drum 309, the two ends of the positioning rings 312 are symmetrically distributed along the axis of the winding drum 309, a fixed ring groove 313 is formed in the inner ring wall of the positioning ring 312, a plurality of uniformly distributed rolling balls 314 are arranged in the inner cavity of the fixed ring groove 313, one side of the rolling balls 314 close to the rotating roller 307 is in contact with the winding drum 309, the side of the positioning ring 312 away from the winding drum 309 is fixedly connected with the partition plate 308; the nickel-chromium alloy steel wire used by the measuring line 305 not only has a high temperature resistance of 300 DEG C, the passivation film formed by the chromium element in the alloy composition can resist the corrosion of corrosive gases such as sulfides and carbon monoxide in the furnace, and the nickel element enhances the toughness of the steel wire, so that it is not easy to produce fatigue fracture in the repeated winding and unwinding process. The polyimide coating coated on the outer layer is designed for the special tar environment of the calcium carbide furnace. This high molecular material has very low surface energy, and tar is difficult to adhere to its surface. Even if there is a small amount of adhesion, it will also fall off by itself under the tension of the measuring line 305 winding and unwinding, avoiding the line diameter thickening and elasticity decreasing caused by the accumulation of tar in the traditional steel wire. The torsional spring 311 between the winding drum 309 and the rotating roller 307 is the key to maintaining tension, which is made of high elastic coefficient spring steel. When the measuring line 305 is paid out, the torsional spring 311 accumulates elastic potential energy with the winding drum 309 rotating, generates reverse tension and tightens the measuring line 305; when the measuring line 305 is recovered, the torsional spring 311 releases potential energy to drive the winding drum 309 to rotate in the opposite direction, ensuring that the line body is always close to the surface of the electrode column 2.The wire grooves 310 on the surface of the winding drum 309 are evenly distributed in a spiral shape, the depth and width of each wire groove 310 are accurately matched with the diameter of the measuring wire 305, preventing the wire body from being squeezed or jumping out during winding. The positioning ring 312 at both ends is in contact with the winding drum 309 through the ball 314, converting sliding friction into rolling friction, not only reducing the noise during winding and unwinding, but also reducing the tension fluctuation caused by mechanical wear. The rigid connection between the rotating roller 307 and the encoder 303 ensures that every bit of displacement can be accurately captured. When the encoder 303 converts mechanical rotation into electrical signals, it eliminates high-frequency interference through an internal signal processing module, allowing the small movements of the electrode to be recorded in real time.

[0024] Further, the protection assembly 4 is provided with an assembling cylinder 401, the top of the assembling cylinder 401 is fixedly connected with the pull wire sensor 3, the assembling cylinder 401 coincides with the axis of the pay-off window 306, a plurality of mounting grooves 402 are arranged on the inner wall of the assembling cylinder 401, the plurality of mounting grooves 402 are uniformly distributed around the axis of the assembling cylinder 401, positioning grooves 403 are arranged on the both sides of the groove wall of the mounting groove 402, a rotating rod 404 is arranged in the mounting groove 402, the both ends of the rotating rod 404 are rotatably connected with the bottom of the inner cavity of the both sides of the positioning groove 403, a coil spring 405 is sleeved on the both ends of the rotating rod 404, the coil spring 405 is arranged in the positioning groove 403, one end of the coil spring 405 is fixedly connected with the inner wall of the positioning groove 403, the other end of the coil spring 405 is fixedly connected with the surface of the rotating rod 404, a pushing seat 406 is fixedly sleeved on the surface of the rotating rod 404, embedding grooves 407 are arranged on the upper and lower sides of the mounting groove 402, the pushing seat 406 is slidably connected with the groove wall of the embedding groove 407, one end of the pushing seat 406 close to the center of the assembling cylinder 401 is fixedly connected with a scraper 408, one side of the scraper 408 away from the pushing seat 406 is in contact with the measuring line 305. The assembling cylinder 401 is made of high-temperature-resistant alloy material, the axis thereof strictly coincides with the pay-off window 306, so that the measuring line 305 is always in the central position when being drawn out, and friction with the cylinder wall is avoided. The mounting grooves 402 on the inner wall are radially and uniformly distributed, the rotating rod 404 in each mounting groove 402 is connected with the positioning groove 403 through the bearings at the both ends, so that the rotating process is smooth. The coil spring 405 adopts a multi-turn tightly wound structure, the elastic force thereof is accurately measured, so that the scraper 408 can be closely attached to the surface of the measuring line 305, and the line body is not abraded due to excessive pressure. The scraper 408 is made of high-hardness ceramic material, the edge thereof in contact with the measuring line 305 is ground into a circular arc shape, so that the edge can be attached to the curvature of the line body surface when removing impurities, and the coating is not scratched. When the measuring line 305 is retracted upward, the upper scraper 408 will be turned upward with the line body, the coil spring 405 is tightened and stores elastic force; when the measuring line 305 is paid out downward, the lower scraper 408 is closely attached downward under the action of the coil spring 405, so that the two-way scraping is realized. The depth of the embedding groove 407 provides sufficient space for the scraper 408 to adjust the angle within ±15 degrees range with the swing of the measuring line 305, so that the effective contact can be maintained in any retraction or pay-out state. This dynamic cleaning mechanism can not only remove the dust and tar on the surface, but also scrape off the small slag particles attached to the line body, so that these hard impurities are prevented from being stuck in the rotating parts in the sensor, and the measurement error caused by mechanical blockage is avoided from the source.

[0025] The coordinated work of each system of the device builds a set of efficient and stable electrode pressure release measurement and reaction optimization system, and its comprehensive advantages are reflected in multiple dimensions of the whole production process. The electromagnetic seat 102 optimizes the movement state of the materials in the furnace, which not only improves the conversion rate of raw materials, but also reduces the energy consumption per calcium carbide product. The uniform temperature field prolongs the service life of the refractory material of the furnace body 1 and reduces the production interruption caused by furnace shutdown for maintenance. The high-precision measurement of the pull wire sensor 3 provides a reliable basis for electrode pressure release control. By feeding back the change of electrode position in real time, the control system can accurately adjust the electrode lifting speed and pressure release frequency, avoiding the instability of electric arc or energy waste caused by improper electrode position. The continuous cleaning effect of the protection component 4 reduces the maintenance frequency of the sensor, which can be extended to once every few months from once a week, greatly reducing labor costs and equipment downtime. From the perspective of production safety, the buffer effect of the torsional spring 311 and the high-strength design of the measuring line 305 avoid the line breakage caused by sudden electrode falling, reducing the risk of equipment damage and personnel injury. Overall, this device deeply integrates mechanical structure, material science and automatic control technology, not only solves the problems of low precision, easy damage and difficult maintenance in traditional electrode measurement of calcium carbide furnace, but also optimizes the reaction environment and control process, providing solid technical support for the efficiency and intelligence of calcium carbide production. In the long-term operation, the benefits of energy consumption reduction, yield improvement and fault reduction will continue to create significant economic value for enterprises.

[0026] Working principle: The device realizes precise measurement of electrode pressure release and optimization of reaction environment in the furnace through the coordination of the electromagnetic seat 102, the pull wire sensor 3 and the protection component 4. The electromagnetic seat 102 is installed in the mounting chamber 101 of the furnace body 1 wall and generates a periodically changing magnetic field after being connected to an alternating current. The magnetic field penetrates the furnace body 1 wall and acts on the molten pool and furnace charge particles with electrical conductivity in the furnace. The internal vortex of the furnace charge is induced by the change of the magnetic field, and the vortex interacts with the magnetic field to form a directional thrust, which pushes the furnace charge to circulate. This process breaks the stratification of lime and carbonaceous raw materials caused by gravity due to the large difference in density, so that the heavier lime particles are lifted upwards and the lighter carbonaceous raw materials are pulled downwards, achieving full contact in convection and eliminating the "cold zone" far from the electrode high-temperature area in traditional calcium carbide furnaces. This allows the materials to continuously enter the high-temperature reaction zone, and at the same time, the generated calcium carbide melt is timely taken away from the high-temperature center to avoid overburning or decomposition. The turbulent effect of electromagnetic stirring also uniformly transfers heat, reduces the high-temperature volatilization loss of raw materials and the accelerated oxidation of electrodes due to local overheating, and the furnace charge flow can flush the furnace bottom to prevent the deposition of unreacted materials and ensure the reasonable embedding depth of the electrode, laying a foundation for stable arc discharge and reaction heat release.

[0027] The pull wire sensor 3 is responsible for measuring the displacement of the electrode column 2 in real time, the shell 301 is connected with the fixed frame 201 through the fixed plate 302, the rotating roller 307 in the shell 301 is connected with the encoder 303, the winding drum 309 on the rotating roller 307 winds the measuring line 305, one end of the measuring line 305 is connected with the electrode column 2, and the other end passes through the pay-off window 306. The torsion spring 311 between the winding drum 309 and the rotating roller 307 can realize the winding and unwinding of the measuring line 305 through elastic deformation when the electrode column 2 moves: when the electrode moves to make the measuring line 305 pay off, the rotating roller 309 rotates with the measuring line 305 to store the torsion spring 311; when the electrode is reset, the torsion spring 311 releases the potential energy to drive the winding drum 309 to reverse, and the measuring line 305 is wound back. The wire groove 310 on the surface of the winding drum 309 avoids the mutual extrusion or slot jumping of the measuring line 305 when winding, and the positioning ring 312 at both ends is in contact with the winding drum 309 through the ball 314, which converts sliding friction into rolling friction, reduces tension fluctuation and wear. The rigid connection between the rotating roller 307 and the encoder 303 ensures that the displacement change is accurately captured, the encoder 303 converts the mechanical rotation amount into an electrical signal, eliminates interference through internal processing, and realizes real-time recording of the small action of the electrode compression and release.

[0028] The protection assembly 4 guarantees the stable operation of the pull wire sensor 3, the assembly cylinder 401 is coaxial with the pay-off window 306, the rotating rod 404 in the mounting groove 402 on the inner wall is provided with a scraper 408, and the scraper 408 is tightly attached to the surface of the measuring line 305 through the coil spring 405. When the measuring line 305 is recovered or paid off, the scraper 408 turns over correspondingly with the movement of the line body, and the coil spring 405 adjusts the elastic force accordingly, so that the scraper 408 is tightly attached to the line body. The scraper 408 is made of high-hardness ceramic material, and the edge is polished into a circular arc shape, which can scrape off dust, tar and small slag on the surface of the measuring line 305 in both directions, prevent impurities from entering the internal rotating parts of the sensor and avoid measurement errors. The electromagnetic seat 102 optimizes the reaction environment in the furnace to improve efficiency, the pull wire sensor 3 accurately measures to provide a basis for electrode control, the protection assembly 4 reduces the maintenance requirement, and the three cooperate to build an efficient and stable system, reduce energy consumption, prolong the service life of the equipment, reduce failures, and provide technical support for the efficiency and intelligence of calcium carbide production.

[0029] The technical scope of the present application is not limited to the content in the above description, and those skilled in the art can make various modifications and modifications to the above embodiments without departing from the technical idea of the present application, and these modifications and modifications should belong to the protection scope of the present application.

Claims

1. A calcium carbide furnace electrode pressure relief automatic measuring device, characterized in that, Including furnace body, the furnace body wall is equipped with installation chamber, the installation chamber inside electromagnetic seat is installed, three electrode columns are installed on the top of the furnace body, the electrode column side is equipped with fixed frame, the fixed frame surface is fixedly connected with the pull wire sensor, and the pull wire sensor output is equipped with a protection assembly;The pull wire sensor includes a shell, the shell is built-in measuring line, the shell bottom is equipped with a pay-off window, the shell is built-in rotating roller, the rotating roller surface is fixedly connected with two partitions, two partitions are provided between the rotating roller, the measuring line is wound on the surface of the winding drum, and the torsional spring is provided between the winding drum and the rotating roller;The protection assembly includes an assembly barrel, the assembly barrel top is fixedly connected with the pull wire sensor, a plurality of installation grooves are formed in the inner wall of the assembly barrel, the installation groove wall is equipped with a positioning groove, the installation groove is built-in rotating rod, the rotating rod both ends are sleeved with a coiled spring, the rotating rod surface is fixedly connected with a dial seat, the dial seat is fixedly connected with a scraper on the side away from the assembly barrel center, and the scraper is in contact with the measuring line on the side away from the dial seat.

2. The automatic measurement device for electrode pressure relief of the calcium carbide furnace according to claim 1, characterized in that: The surface of the shell is fixedly connected with a fixed plate, the fixed plate is fixedly connected with the fixed frame away from the shell, the shell one end is provided with an encoder, and the shell is fixedly connected with a sealing plate away from the encoder.

3. The automatic measurement device for electrode pressure relief of the calcium carbide furnace according to claim 1, characterized in that: The top of the furnace body is equipped with a feeding port and a discharge port, and the feeding port coincides with the furnace axis.

4. The automatic measurement device for electrode pressure relief of the calcium carbide furnace according to claim 1, characterized in that: The rotating roller coincides with the shell axis, one end of the rotating roller is fixedly connected with the encoder output, the winding drum is sleeved on the surface of the rotating roller, and a plurality of uniformly arranged line grooves are formed in the surface of the winding drum.

5. The automatic measurement device for electrode pressure relief of the calcium carbide furnace according to claim 1, characterized in that: One end of the measuring line is fixedly connected with the winding drum, the other end of the measuring line extends to the electrode column through the pay-off window and the protection assembly, and the other end of the measuring line is fixedly connected with the electrode column away from the pull wire sensor.

6. The automatic measurement device for calcium carbide furnace electrode pressure release according to claim 1, characterized in that: The torsional spring is sleeved on the surface of the rotating roller, one end of the torsional spring is fixedly connected with the rotating roller, and the other end of the torsional spring is fixedly connected with the inner wall of the winding drum.

7. The automatic measurement device for calcium carbide furnace electrode pressure release according to claim 1, characterized in that: The winding drum both ends are provided with a positioning ring, and the positioning rings on both ends are symmetrically distributed along the winding drum axis, a fixed ring groove is formed in the inner ring wall of the positioning ring, a plurality of uniformly distributed balls are installed in the fixed ring groove cavity, the balls are in contact with the winding drum on the side close to the rotating roller, and the positioning ring is fixedly connected with the partition on the side away from the winding drum.

8. The automatic measurement device for calcium carbide furnace electrode pressure release according to claim 1, characterized in that: The rotating rod both ends are rotatably connected with the bottom of the positioning groove on both sides, and a plurality of installation grooves are uniformly distributed around the assembly barrel axis.

9. The automatic measurement device for calcium carbide furnace electrode pressure release according to claim 1, characterized in that: The coiled spring is arranged in the positioning groove, one end of the coiled spring is fixedly connected with the inner wall of the positioning groove, and the other end of the coiled spring is fixedly connected with the surface of the rotating rod.

10. The automatic measurement device for calcium carbide furnace electrode pressure release according to claim 1, characterized in that: The assembly barrel coincides with the pay-off window axis, and the embedding grooves are formed in the upper and lower sides of the installation groove. The dial seat is slidably connected with the embedding groove wall.

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