Search

CN-122015996-A - Solid level meter suitable for high-temperature high-pressure and corrosive environment and measuring method

CN122015996ACN 122015996 ACN122015996 ACN 122015996ACN-122015996-A

Abstract

The invention belongs to the field of material level measurement, in particular relates to a solid material level meter and a measurement method suitable for high-temperature high-pressure and corrosive environments, and aims to solve the problems of inaccurate measurement and poor reliability under severe working conditions in the prior art. The material level gauge comprises a sealed cabin body, a cooling section connected to the lower end of the sealed cabin body, a lifting driving mechanism arranged at the upper end of the sealed cabin body, and a probe rod with one end connected with the lifting driving mechanism, wherein the other end of the probe rod is connected with a probe with a built-in pressure sensor. When the probe contacts the surface of the material, the pressure sensor generates a trigger signal, and the control system records the current position according to the trigger signal and converts the current position into the height of the material surface. By arranging the cooling section and the sealed cabin, the invention effectively aims at high temperature, high pressure and corrosion environment, avoids continuous contact between the measuring component and the severe environment, and remarkably improves the measuring precision and the reliability of long-term operation of the equipment.

Inventors

  • DAI FEI
  • XU QINGWEI
  • JIN HONGGUANG

Assignees

  • 中国科学院工程热物理研究所

Dates

Publication Date
20260512
Application Date
20260212

Claims (10)

  1. 1. A solid level gauge suitable for use in high temperature, high pressure and corrosive environments, comprising: A sealed cabin (10); The cooling section (20) is connected to the lower end of the sealed cabin body (10), and the cooling section (20) is used for being connected with working condition equipment to be measured; The lifting driving mechanism (30) is arranged at the upper end of the sealed cabin body (10) and is in sealing connection with the sealed cabin body (10); a probe rod (40) one end of which is connected with the lifting driving mechanism (30) to be driven to lift; the probe (50) is connected to the other end of the probe rod (40), and a pressure sensor is arranged in the probe (50); Wherein the probe rod (40) passes through the inner cavity of the cooling section (20) so that the probe (50) can be driven by the lifting driving mechanism (30) to extend into or retract into the working condition equipment.
  2. 2. The solid level gauge applicable to high-temperature, high-pressure and corrosive environments according to claim 1, wherein the lifting driving mechanism (30) comprises a servo motor (31), a speed reducer (32) and a hoisting mechanism (33) which are connected in a transmission way in sequence; One end of the probe rod (40) penetrates through the sealed cabin body (10) to be connected with the hoisting mechanism (33) so as to be driven by the hoisting mechanism (33) to lift.
  3. 3. A solid level gauge adapted for use in high temperature, high pressure and corrosive environments as claimed in claim 2, further comprising a control system electrically connected to said servo motor (31) and adapted to control the operation of said servo motor (31) in response to feedback signals from said pressure sensor to adjust the lifting speed and position of said probe rod (40).
  4. 4. The solid level gauge suitable for high-temperature, high-pressure and corrosive environments according to claim 2, wherein an upper flange (11) is arranged at the upper end of the sealed cabin body (10) and is used for being in sealing connection with a shell of the hoisting mechanism (33), and a lower flange (12) is arranged at the lower end of the sealed cabin body (10) and is used for being in sealing connection with the cooling section (20).
  5. 5. A solid level gauge suitable for use in high temperature, high pressure and corrosive environments according to claim 1, wherein the cooling section (20) comprises an inner tube (21) and an outer tube (22) coaxially arranged; a jacket cavity (23) for circulating a cooling medium is defined between the inner tube (21) and the outer tube (22), the inner tube (21) defines a central channel for the probe rod (40) to pass through, and a cooling medium inlet (25) and a cooling medium outlet (26) which are in fluid communication with the jacket cavity (23) are arranged on the outer tube (22).
  6. 6. A solid level gauge for use in high temperature, high pressure and corrosive environments according to claim 1, wherein the probe (50) and/or the probe rod (40) are made of a high temperature and corrosion resistant material.
  7. 7. The solid level gauge of claim 6, wherein the high temperature and corrosion resistant material is 310S stainless steel or a special alloy.
  8. 8. The solid level gauge suitable for high-temperature, high-pressure and corrosive environments according to claim 4, wherein a magnetohydrodynamic seal (13) is arranged at the top of the upper flange (11) or the sealed cabin (10), and the output end of the hoisting mechanism (33) extends into the sealed cabin (10) through the magnetohydrodynamic seal (13).
  9. 9. A solid level gauge suitable for use in high temperature, high pressure and corrosive environments as claimed in claim 1, wherein said probe (40) is a cylindrical member having internal telescoping properties.
  10. 10. A method of measuring a level of a solid material suitable for use in a high temperature, high pressure and corrosive environment, based on a solid level gauge according to any one of claims 1-9, characterized in that the method comprises: Introducing a cooling medium into a jacket cavity (23) of the cooling section (20), and sealing and pressurizing the sealed cabin (10) to enable the internal pressure to be adapted to or higher than the pressure in working condition equipment; The control system drives the lifting driving mechanism (30), and the probe rod (40) and the probe head (50) are released downwards through the hoisting mechanism (33) and extend into working condition equipment; when the probe (50) contacts the material, a pressure sensor in the probe generates a trigger signal and feeds the trigger signal back to the control system; The control system immediately records the descending length of the probe rod (40) or the rotation number of the winding mechanism (33) and converts the descending length of the probe rod into the current material level height; After the position record of the current material level is completed, the control system immediately drives the lifting driving mechanism (30) to rotate reversely, and the probe (50) and the probe rod (40) are retracted, so that the probe (50) is separated from continuous contact with materials and a high-temperature and high-pressure environment.

Description

Solid level meter suitable for high-temperature high-pressure and corrosive environment and measuring method Technical Field The invention belongs to the field of material level measurement, and particularly relates to a solid material level meter and a measurement method suitable for high-temperature high-pressure and corrosive environments. Background In the industrial production fields of coal chemical industry, cement, metallurgy, electric power and the like, accurate and stable measurement of the material level of solid materials (such as coal dust, mineral powder, ash slag and the like) in a storage container is a key link for ensuring smooth and safe operation of a production flow. Currently, the solid level measuring equipment commonly used in industry mainly comprises a radar level gauge and a weight type level gauge. However, under severe conditions of high temperature, high pressure, strong corrosiveness or high dust, both types of level gauges expose significant limitations. The electromagnetic wave signal of the radar level gauge is easily influenced by diffraction and absorption of dust in a bin, so that the signal is attenuated or even lost, and meanwhile, diffuse reflection is caused by uneven surfaces of solid materials and the existence of stacking angles, so that the measurement accuracy is seriously influenced. In addition, the antenna and waveguide components of the radar level gauge are susceptible to damage in high temperature, high pressure or corrosive media, and the equipment cost is high, and the installation and the debugging are complex. The weight type level gauge is used as a contact type measuring device, and the structure of the weight type level gauge is mainly mechanical transmission. In practical application, vibration of a factory building or a stock bin easily causes shaking of a steel belt or a steel wire rope, measurement errors and even rope disorder faults are caused, and a heavy hammer easily falls into soft materials, so that measurement values are larger. More seriously, in a high-temperature environment, a motor and a transmission mechanism of the device are easy to burn out, a high-pressure environment presents a great challenge for shaft sealing, and dust is easy to block the transmission mechanism, so that the device is fast in abrasion, high in failure rate and poor in reliability. Therefore, there is a strong need in the art for a solid level measuring device that overcomes the above-mentioned drawbacks and achieves long-term stable and accurate measurements in extreme industrial environments such as high temperature, high pressure, and high corrosiveness. Disclosure of Invention In order to solve the problems in the prior art, namely the problems of inaccurate measurement and poor reliability in the severe working condition in the prior art, the invention provides a solid level meter and a measurement method suitable for high-temperature high-pressure and corrosive environments. In a first embodiment of the present invention, a solid level gauge suitable for use in high temperature, high pressure and corrosive environments is provided, comprising: Sealing the cabin; the cooling section is connected to the lower end of the sealed cabin body and is used for being connected with working condition equipment to be measured; the lifting driving mechanism is arranged at the upper end of the sealed cabin body and is in sealing connection with the sealed cabin body; One end of the probe rod is connected with the lifting driving mechanism to be driven to lift; the probe is connected to the other end of the probe rod, and a pressure sensor is arranged in the probe; The probe rod passes through the inner cavity of the cooling section, so that the probe can be driven by the lifting driving mechanism to extend into or retract into the working condition equipment. Further, the lifting driving mechanism comprises a servo motor, a speed reducer and a hoisting mechanism which are sequentially connected in a transmission way; one end of the probe rod penetrates through the sealed cabin body and is connected with the hoisting mechanism so as to be driven by the hoisting mechanism to lift. Further, the control system is electrically connected with the servo motor and used for controlling the operation of the servo motor according to the feedback signal of the pressure sensor so as to adjust the lifting speed and the position of the probe rod. Further, an upper flange is arranged at the upper end of the sealed cabin body and used for being in sealing connection with the shell of the hoisting mechanism, and a lower flange is arranged at the lower end of the sealed cabin body and used for being in sealing connection with the cooling section. Further, the cooling section comprises an inner pipe and an outer pipe which are coaxially arranged; A jacket cavity for circulating a cooling medium is defined between the inner tube and the outer tube, the inner tube defines a central chann