CN112033566B - Distributed optical fiber temperature measurement system for aluminum electrolysis cell - Google Patents
Distributed optical fiber temperature measurement system for aluminum electrolysis cell Download PDFInfo
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- CN112033566B CN112033566B CN202010674421.8A CN202010674421A CN112033566B CN 112033566 B CN112033566 B CN 112033566B CN 202010674421 A CN202010674421 A CN 202010674421A CN 112033566 B CN112033566 B CN 112033566B
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- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
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Abstract
The invention discloses a distributed optical fiber temperature measurement system for an aluminum electrolytic cell, which comprises a temperature measurement device, a temperature measurement optical fiber and a temperature monitoring system, wherein the temperature monitoring system is connected with the temperature measurement device, the temperature measurement optical fiber comprises a high-temperature-sensing optical fiber and a low-temperature-sensing optical fiber, the low-temperature-sensing optical fiber is arranged at the bottom of the electrolytic cell, and the high-temperature-sensing optical fiber is arranged at the side of the electrolytic cell. The substantial effects of the invention include: the temperature measuring device emits laser signals to return through the temperature measuring optical fibers to form a closed loop, each temperature measuring point is accurately positioned by detecting the return time of the optical signals passing through different temperature measuring points, the temperature of each temperature measuring point is detected by analyzing the change of a Rayleigh line and a Raman line, the temperature of the bottom or the side of the aluminum electrolytic cell is detected, the temperature of each point is visually and continuously displayed in the temperature monitoring system, and the abnormal temperature is alarmed. Provides powerful data guarantee for the aluminum electrolysis production operation and operation guidance, and can effectively improve the production stability and reduce the occurrence rate of the leakage tank.
Description
Technical Field
The invention relates to the technical field of information detection in aluminum electrolysis processes, in particular to a distributed optical fiber temperature measurement system for an aluminum electrolysis cell.
Background
The temperature of the aluminum cell shell is one of the indispensable polling items in the production process, generally, the temperature measuring instrument with a thermocouple is manually held to measure the side part (a heat radiation hole and a cathode steel bar) and the cell bottom, particularly, the 'cell' in abnormal states such as unstable operation needs to pay more attention, the temperature measuring frequency is increased, so as to judge whether accidents such as cell leakage can occur or not, and an emergency plan is made in advance.
However, the manual temperature measurement is relied on, because the temperature measuring point space is narrow, the environment is severe, so that the contact is not good during the temperature measurement, the collected data is unstable, the labor intensity of workers is high, and particularly, the manual work can influence the body health of the workers in the high-temperature narrow environment for a long time.
At present, besides manual handheld temperature measurement by a thermometer, a AGV-based tank bottom temperature inspection system (robot), a rail-based temperature inspection system and a fixed-mounting thermocouple temperature measurement system are developed. As published (bulletin) No.: the utility model discloses a CN201892575U discloses an aluminum electrolysis cell shell temperature on-line monitoring device. The temperature measuring systems are high in cost and difficult to install, and particularly cannot be installed at positions shielded by buses; secondly, only the bottom temperature of the cell can be measured, and one set of system can not monitor the whole series of electrolytic cells simultaneously; thirdly, the road surface condition at the bottom of the groove is poor, and the path planning of the AVG or other road surface walking type temperature measuring system is complex.
In conclusion, there is a need to further develop and optimize an online temperature detection system for an aluminum electrolytic cell casing, so as to improve usability, reliability and maintainability and reduce cost, thereby further improving the predictive maintenance level of the aluminum electrolytic cell, and achieving the purposes of greatly reducing the occurrence rate of cell leakage and prolonging the service life of the cell.
Disclosure of Invention
Aiming at the problems of poor applicability and high maintenance cost in the prior art, the invention provides the distributed optical fiber temperature measurement system for the aluminum electrolytic cell, which improves the analysis precision and reduces the complexity and the cost of the system through differential detection of high-temperature and low-temperature regions.
The technical scheme of the invention is as follows.
The distributed optical fiber temperature measuring system for the aluminum electrolytic cell comprises a temperature measuring device, a temperature measuring optical fiber and a temperature monitoring system, wherein the temperature monitoring system is connected with the temperature measuring device, the temperature measuring optical fiber comprises a high-temperature sensing optical fiber and a low-temperature sensing optical fiber, the low-temperature sensing optical fiber is arranged at the bottom of the electrolytic cell, and the high-temperature sensing optical fiber is arranged at the side of the electrolytic cell. The temperature measuring device emits laser signals to return through the temperature measuring optical fiber to form a closed loop, each temperature measuring point is accurately positioned by detecting the return time of the optical signals passing through different temperature measuring points, the temperature of each temperature measuring point is detected by analyzing the change of a Rayleigh line and a Raman line, the temperature detection of the bottom or the side part (comprising a heat dissipation hole and a cathode steel bar) of the aluminum electrolytic cell is realized, the temperature of each point is visually and continuously displayed in the temperature monitoring system, and the abnormal temperature is alarmed.
Preferably, the high-temperature-sensing optical fiber is arranged at the side part of the electrolytic bath through a high-temperature binder, and a protective cover is arranged outside the high-temperature-sensing optical fiber. The protective cover prevents the electrolytic production from slag falling and damaging the optical fiber.
Preferably, the apparatus further comprises a magnetic protective cover which is attached to the side of the electrolytic cell and which holds the high temperature-sensitive optical fiber cover to the side of the electrolytic cell. Because the electrolytic cell is in the strong magnetic field environment, the protective cover made of magnetic material can be directly adsorbed on the electrolytic cell, thereby avoiding the extra fixing measure of the optical fiber and being easy to maintain.
Preferably, the temperature measuring device includes: a laser source including a laser for emitting laser light; the collection module comprises a plurality of lens groups and receives laser; the light splitting module comprises a grating or a notch filter and is used for filtering Rayleigh scattering and stray light; the temperature measurement host is connected with the light splitting module and the temperature measurement optical fiber and used for transmitting and processing multi-channel optical signals; the detection module is connected with the temperature measurement host and the temperature monitoring system and comprises a photomultiplier detector, a semiconductor array detector or a multichannel charge coupling device. The stability and the service life of the device are improved by using mature technology.
Preferably, an air flow channel is arranged in the magnetic protection cover, an air outlet of the air flow channel is arranged at the top of the magnetic protection cover and faces the upper surface of the magnetic protection cover, and an air inlet of the air flow channel is arranged in the middle or at the lower part of the magnetic protection cover. Because the temperature near the electrolytic bath is higher, the air in the airflow channel is heated and moves upwards and flows out from the air outlet, and the falling slag on the surface of the protective cover can be blown off to slide down, so that the long-time accumulation is prevented.
Preferably, the temperature measuring optical fiber is an armored optical fiber.
The substantial effects of the invention include: the temperature distribution parameters of the side part and the bottom of the aluminum electrolytic cell are reliably and accurately obtained, so that on one hand, the temperature measuring instrument is prevented from being held by hands one by one and relevant data is manually recorded and collected in a high-temperature narrow environment for a long time, and the labor intensity of workers is greatly reduced; on the other hand, the system has the characteristics of simple and quick installation, convenient maintenance, low cost and the like, and improves the usability and the safety; moreover, when the system is used for one-time installation, any part is not required to be replaced under the normal condition, the service life is long, and even if the optical fiber is damaged by external factors, only the damaged optical fiber needs to be welded, and the normal operation of the system is not influenced. In addition, the system can quickly and accurately position the abnormal temperature position, and provides accurate and reliable information for the pre-judgment and emergency treatment of the leakage groove. In a word, the system provides powerful data guarantee for the aluminum electrolysis production operation and operation guidance, and can effectively improve the production stability and reduce the occurrence rate of the leakage groove.
Drawings
FIG. 1 is a system block diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of a magnetic shield according to an embodiment of the present invention;
FIG. 3 is a schematic view of another magnetic shield according to an embodiment of the present invention;
the figure includes: 1-temperature measuring optical fiber, 2-temperature measuring device, 3-temperature monitoring system, 11-magnetic protective cover and 12-air flow channel.
Detailed Description
The technical solution of the present application will be described with reference to the following examples. In addition, numerous specific details are set forth below in order to provide a better understanding of the present invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present invention.
The first embodiment is as follows:
as shown in figure 1, the distributed optical fiber temperature measurement system for the aluminum electrolytic cell comprises a temperature measurement device 2, a temperature measurement optical fiber 1 and a temperature monitoring system 3, wherein the temperature measurement optical fiber is an armored optical fiber. The temperature monitoring system is connected with the temperature measuring device, the temperature measuring optical fiber comprises a high temperature sensing optical fiber and a low temperature sensing optical fiber, the low temperature sensing optical fiber is arranged at the bottom of the electrolytic bath, and the high temperature sensing optical fiber is arranged at the side of the electrolytic bath. The temperature measuring device emits laser signals to return through the temperature measuring optical fiber to form a closed loop, each temperature measuring point is accurately positioned by detecting the return time of the optical signals passing through different temperature measuring points, the temperature of each temperature measuring point is detected by analyzing the change of a Rayleigh line and a Raman line, the temperature detection of the bottom or the side part (comprising a heat dissipation hole and a cathode steel bar) of the aluminum electrolytic cell is realized, the temperature of each point is visually and continuously displayed in the temperature monitoring system, and the abnormal temperature is alarmed.
The high-temperature-sensing optical fiber is arranged at the side part of the electrolytic bath through a high-temperature binder, and a magnetic protective cover 11 shown in figure 2 is arranged outside the high-temperature-sensing optical fiber. The protective cover prevents the electrolytic production from slag falling and damaging the optical fiber. The magnetic protective cover is adsorbed on the side part of the electrolytic cell, and the protective cover buckles the high-temperature-sensing optical fiber cover on the side part of the electrolytic cell. Because the electrolytic cell is in the strong magnetic field environment, the protective cover made of magnetic material can be directly adsorbed on the electrolytic cell, thereby avoiding the extra fixing measure of the optical fiber and being easy to maintain.
The temperature measuring device of this embodiment includes: a laser source including a laser for emitting laser light; the collection module comprises a plurality of lens groups and receives laser; the light splitting module comprises a grating or a notch filter and is used for filtering Rayleigh scattering and stray light; the temperature measurement host is connected with the light splitting module and the temperature measurement optical fiber and used for transmitting and processing multi-channel optical signals; the detection module is connected with the temperature measurement host and the temperature monitoring system and comprises a photomultiplier detector, a semiconductor array detector or a multichannel charge coupling device. The stability and the service life of the device are improved by using mature technology.
Example two:
this embodiment is the same as last embodiment on the whole, and the difference lies in, is equipped with airflow channel in the magnetism safety cover, and airflow channel's venthole sets up at magnetism safety cover top and towards magnetism safety cover upper surface, and airflow channel's inlet port sets up in the middle part or the lower part of magnetism safety cover. Because the temperature near the electrolytic bath is higher, the air in the airflow channel is heated and moves upwards and flows out from the air outlet, and the falling slag on the surface of the protective cover can be blown off to slide down, so that the long-time accumulation is prevented.
The temperature distribution parameters of the side part and the bottom of the aluminum electrolytic cell are reliably and accurately obtained, so that on one hand, the temperature measuring instrument is prevented from being held by hands one by one and relevant data is manually recorded and collected in a high-temperature narrow environment for a long time, and the labor intensity of workers is greatly reduced; on the other hand, the system has the characteristics of simple and quick installation, convenient maintenance, low cost and the like, and improves the usability and the safety; moreover, when the system is used for one-time installation, any part is not required to be replaced under the normal condition, the service life is long, and even if the optical fiber is damaged by external factors, only the damaged optical fiber needs to be welded, and the normal operation of the system is not influenced. In addition, the system can quickly and accurately position the abnormal temperature position, and provides accurate and reliable information for the pre-judgment and emergency treatment of the leakage groove. In a word, the system provides powerful data guarantee for the aluminum electrolysis production operation and operation guidance, and can effectively improve the production stability and reduce the occurrence rate of the leakage groove.
Through the description of the above embodiments, those skilled in the art will understand that, for convenience and simplicity of description, only the division of the above functional modules is used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of a specific device is divided into different functional modules to complete all or part of the above described functions.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (4)
1. The utility model provides an aluminium cell distributing type optic fibre temperature measurement system, includes temperature measuring device and temperature measurement optic fibre, its characterized in that still includes temperature monitoring system, temperature monitoring system connects temperature measuring device, temperature measurement optic fibre includes high temperature sensing optic fibre and low temperature sensing optic fibre, low temperature sensing optic fibre sets up in the electrolysis trough bottom, high temperature sensing optic fibre sets up in the electrolysis trough lateral part, still includes the magnetism safety cover, the magnetism safety cover adsorbs in the electrolysis trough lateral part, and the safety cover detains the high temperature sensing optic fibre cover in the electrolysis trough lateral part, be equipped with airflow channel in the magnetism safety cover, airflow channel's venthole sets up at magnetism safety cover top and towards magnetism safety cover upper surface, airflow channel's inlet port sets up middle part or lower part at the magnetism safety cover.
2. The aluminum electrolysis cell distributed optical fiber temperature measurement system according to claim 1, wherein the high temperature sensing optical fiber is arranged at the side part of the aluminum electrolysis cell through a high temperature adhesive, and a protective cover is arranged outside the high temperature sensing optical fiber.
3. The aluminum electrolysis cell distributed optical fiber temperature measurement system according to claim 1, wherein the temperature measurement device comprises:
a laser source including a laser for emitting laser light;
the collection module comprises a plurality of lens groups and receives laser;
the light splitting module comprises a grating or a notch filter and is used for filtering Rayleigh scattering and stray light;
the temperature measurement host is connected with the light splitting module and the temperature measurement optical fiber and used for transmitting and processing multi-channel optical signals;
the detection module is connected with the temperature measurement host and the temperature monitoring system and comprises a photomultiplier detector, a semiconductor array detector or a multichannel charge coupling device.
4. The aluminum electrolysis cell distributed optical fiber temperature measurement system according to claim 1, wherein the temperature measurement optical fiber is an armored optical fiber.
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| CN202010674421.8A CN112033566B (en) | 2020-07-14 | 2020-07-14 | Distributed optical fiber temperature measurement system for aluminum electrolysis cell |
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| CN202010674421.8A CN112033566B (en) | 2020-07-14 | 2020-07-14 | Distributed optical fiber temperature measurement system for aluminum electrolysis cell |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008098494A (en) * | 2006-10-13 | 2008-04-24 | Matsushita Electric Ind Co Ltd | Aluminum electrolytic capacitor |
| CN106768476A (en) * | 2016-12-30 | 2017-05-31 | 重庆旗能电铝有限公司 | Aluminum cell cathode steel bar temperature measurement on-line device and method |
| CN106917109A (en) * | 2017-03-24 | 2017-07-04 | 宁波东方之光安全技术有限公司 | A kind of temperature measuring equipment and distributed temperature measuring system for electrolytic cell cathode steel bar |
| CN206695927U (en) * | 2017-03-24 | 2017-12-01 | 宁波东方之光安全技术有限公司 | A kind of temperature sensor structure for electrolytic cell cathode steel bar thermometric |
| CN109029757A (en) * | 2018-08-16 | 2018-12-18 | 云南卓烁科技有限公司 | A kind of aluminium cell temperature acquisition system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202369693U (en) * | 2011-12-15 | 2012-08-08 | 山东省永信非织造材料有限公司 | Dustproof device of cotton slitting machine |
| CN203477271U (en) * | 2013-09-25 | 2014-03-12 | 长沙三昌泵业有限公司 | Ventilation plug |
| CN204127041U (en) * | 2014-09-12 | 2015-01-28 | 西安磁林电气有限公司 | A kind of manipulator cylinder ventilation blowing cleaner |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008098494A (en) * | 2006-10-13 | 2008-04-24 | Matsushita Electric Ind Co Ltd | Aluminum electrolytic capacitor |
| CN106768476A (en) * | 2016-12-30 | 2017-05-31 | 重庆旗能电铝有限公司 | Aluminum cell cathode steel bar temperature measurement on-line device and method |
| CN106917109A (en) * | 2017-03-24 | 2017-07-04 | 宁波东方之光安全技术有限公司 | A kind of temperature measuring equipment and distributed temperature measuring system for electrolytic cell cathode steel bar |
| CN206695927U (en) * | 2017-03-24 | 2017-12-01 | 宁波东方之光安全技术有限公司 | A kind of temperature sensor structure for electrolytic cell cathode steel bar thermometric |
| CN109029757A (en) * | 2018-08-16 | 2018-12-18 | 云南卓烁科技有限公司 | A kind of aluminium cell temperature acquisition system |
Non-Patent Citations (1)
| Title |
|---|
| "基于光纤光栅的铝电解槽温度在线检测系统";孟玲等;《传感技术学报》;20110228;第204-208页 * |
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