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CN-224226870-U - Monitoring device for expansion amount of melting furnace

CN224226870UCN 224226870 UCN224226870 UCN 224226870UCN-224226870-U

Abstract

The utility model relates to the field of liquid crystal substrate glass production, in particular to a device for monitoring the expansion amount of a melting furnace, which comprises a constraint frame, a measuring device and a cooling device, wherein the measuring device comprises an expansion spring, a ring-type pressure sensor and a distance measuring sensor, the real-time pressure born by the expansion spring is monitored through the ring-type pressure sensor, the compression amount of the expansion spring is measured through the distance measuring sensor, so that the expansion amount of the melting furnace body is monitored, and the expansion amount of the melting furnace body is monitored in real time through a double-effect guarantee mechanism of the ring-type pressure sensor and the distance measuring sensor, so that the accuracy of monitoring data is maintained, and the damage risk of the melting furnace body caused by serious temperature rise deformation is avoided. The cooling device is arranged outside the measuring device, the temperature of the measuring device is reduced, the monitoring work of the measuring device in the normal working temperature environment is guaranteed, inaccurate measurement or failure of the measuring device caused by temperature rise is avoided, abnormal expansion quantity missed detection caused by monitoring interruption is effectively prevented, and kiln body structural damage is prevented.

Inventors

  • LI XIANGJUN

Assignees

  • 湖南邵虹特种玻璃股份有限公司

Dates

Publication Date
20260512
Application Date
20250414

Claims (10)

  1. 1. A device for monitoring the expansion amount of a melting furnace, which is arranged outside a melting furnace body (101), and is characterized by comprising a constraint frame, a measuring device and a cooling device (401); The restraint frame comprises at least one pair of upright posts (106) which are vertically arranged on two opposite sides of the kiln body (101) of the melting kiln and a horizontally arranged pull rod (107), wherein the pull rod (107) is connected between the pair of upright posts, and the end parts of the pull rod (107) penetrate through the upright posts (106); The measuring device comprises an expansion spring (201), a ring-type pressure sensor (202) and a distance measuring sensor (203), wherein, The expansion spring (201) is sleeved at the end part of the pull rod (107) and is arranged at the outer side of the upright post (106); The ring-type pressure sensor (202) is fixed on the pull rod (107) and is coaxial with the pull rod (107), and the ring-type pressure sensor (202) is arranged outside the expansion spring (201); The distance measuring sensor (203) is fixed on the gasket (204), and the gasket (204) is sleeved on the pull rod (107) between the expansion spring (201) and the ring-type pressure sensor (202); The cooling device (401) is a hollow sleeve body and is installed on the pull rod (107), and the ring-type pressure sensor (202) and the distance measuring sensor (203) are arranged inside the cooling device (401).
  2. 2. A device for monitoring the expansion of a furnace according to claim 1, characterized in that said measuring means further comprise infrared thermographic cameras (206), at least one group, arranged on the surface of said measuring means and the furnace body (101).
  3. 3. A device for monitoring the expansion of a melting furnace according to claim 1, further comprising an adjusting device, wherein the adjusting device comprises a gear adjusting nut (303), the gear adjusting nut is arranged outside the ring-type pressure sensor (202) and is abutted against the ring-type pressure sensor, threads are arranged in the gear adjusting nut (303), threads matched with the threads are arranged at the end part of the pull rod (107), and the gear adjusting nut (303) is in threaded connection with the pull rod.
  4. 4. A device for monitoring the expansion of a melting furnace according to claim 3, wherein the adjusting device further comprises a servo motor (301) and a driving gear (302), the servo motor (301) is fixed at the upper end of the gasket (204) through a bracket, the driving gear (302) is installed on an output shaft of the servo motor (301), and the driving gear (302) is meshed with a gear adjusting nut (303).
  5. 5. A device for monitoring the expansion of a melting furnace according to claim 1, characterized in that the cooling device (401) is provided with an interlayer, the interlayer is communicated with a fluid hose (402), and the fluid hose (402) is provided with a flow regulating valve (403).
  6. 6. A device for monitoring the expansion of a melting furnace according to claim 1, characterized in that the cooling device (401) is provided with a temperature sensor (406) on its surface.
  7. 7. A device for monitoring the expansion of a melting furnace according to claim 1, characterized in that the distance measuring sensor (203) comprises, but is not limited to, a laser distance measuring sensor or a displacement sensor.
  8. 8. A device for monitoring the expansion of a melting furnace according to claim 1, wherein the distance measuring sensor (203) is fixed at the lower end of the gasket (204) through a universal bracket (205).
  9. 9. A device for monitoring the expansion of a melting furnace according to claim 8, characterized in that the gimbal (205) is provided with a distance measurement preformed hole (405).
  10. 10. A device for monitoring the expansion of a melting furnace according to claim 1, characterized in that the cooling device (401) is provided with a preformed hole (404).

Description

Monitoring device for expansion amount of melting furnace Technical Field The utility model relates to the technical field of liquid crystal substrate glass production, in particular to an expansion amount monitoring device of a melting furnace. Background In the process of melting glass of a liquid crystal substrate, a high-temperature melting furnace is a core part in a production flow, and the perfect state of the high-temperature melting furnace is directly related to the quality of the glass. The new kiln must be heated up to prevent volume changes of the kiln itself due to thermal expansion when in service, which would result in structural damage, material breakage or performance degradation of the kiln if not properly controlled. In the traditional heating kiln baking process, the expansion amount of the kiln is manually judged mainly by means of manual measurement or production experience, and the method has the problem of misjudgment or inaccurate measurement. To this end, in the prior art, it is mentioned that the expansion amount of the melting furnace is detected by using a displacement sensor device, and by arranging the displacement sensor and the expansion spring outside the melting furnace, the melting furnace body is gradually expanded and the expansion spring is gradually compressed as the temperature increases, and the compression amount of the expansion spring is detected by using the displacement sensor, so that the expansion amount of the melting furnace is detected, and the risk of inaccuracy in manual detection is reduced. However, in the process of roasting the kiln, the temperature of the kiln body of the kiln gradually rises to over 1600 ℃ from the room temperature, and the temperature of the kiln body of the kiln gradually rises to over 200 ℃ from the room temperature under the influence of heat radiation due to the fact that the expansion spring and the displacement sensor are close to the kiln body of the kiln. Under the temperature, the elasticity coefficient of the expansion spring can be changed, so that the corresponding pressure of the expansion spring is changed under the same compression amount, therefore, in the situation, the detection result is inaccurate by measuring the compression amount of the expansion spring, the working environment of the displacement sensor is generally required to be below 100 ℃, but the temperature of the displacement sensor is higher than 100 ℃ along with the rise of the temperature of the kiln, at the moment, the measurement accuracy of the displacement sensor is obviously reduced, the phenomenon of abnormal data jumping is often caused, and even the damage of the displacement sensor is caused, so that the precision of monitoring the expansion amount of the kiln body is greatly reduced, and the detection device cannot work normally, so that the performance of the kiln is reduced and even damaged. From the above, the design of the device for accurately monitoring the expansion amount of the kiln body of the melting kiln in the temperature rising environment of the melting kiln has important practical significance. Disclosure of utility model The technical problem to be solved by the utility model is to provide a device for monitoring the expansion amount of a melting furnace, which monitors the expansion amount of the melting furnace body in real time through a double-effect guarantee mechanism of a ring-type pressure sensor and a distance measuring sensor, maintains the accuracy of monitoring data, avoids the damage risk of the melting furnace body caused by serious temperature rise deformation, and is characterized in that a cooling device is arranged outside the measuring device for cooling the measuring device, ensures the monitoring work of the measuring device in a normal working temperature environment, avoids inaccurate or malfunctioning measurement caused by the temperature rise of the measuring device, effectively prevents the abnormal expansion amount caused by the monitoring interruption from missing detection, and prevents the damage of the structure of the melting furnace body. The utility model relates to a device for monitoring the expansion amount of a melting furnace, which is arranged outside a melting furnace body and comprises a constraint frame, a measuring device and a cooling device; The restraint frame comprises at least one pair of upright posts vertically arranged on two opposite sides of the kiln and a horizontally arranged pull rod, wherein the pull rod is connected between the pair of upright posts, and the end parts of the pull rod penetrate through the upright posts; The measuring device comprises an expansion spring, a ring-type pressure sensor and a distance measuring sensor, wherein, The expansion spring is sleeved at the end part of the pull rod and is arranged at the outer side of the upright post; The ring-type pressure sensor is fixed on the pull rod and is coaxial with the pull rod, and the ring-type