CN111896143A - Method and device for overhauling temperature measuring optical fiber of industrial kiln - Google Patents
Method and device for overhauling temperature measuring optical fiber of industrial kiln Download PDFInfo
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- CN111896143A CN111896143A CN202010900258.2A CN202010900258A CN111896143A CN 111896143 A CN111896143 A CN 111896143A CN 202010900258 A CN202010900258 A CN 202010900258A CN 111896143 A CN111896143 A CN 111896143A
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 419
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 203
- 239000000835 fiber Substances 0.000 claims abstract description 51
- 238000007789 sealing Methods 0.000 claims description 76
- 230000003287 optical effect Effects 0.000 claims description 32
- 238000012423 maintenance Methods 0.000 claims description 28
- 230000001681 protective effect Effects 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 229920006231 aramid fiber Polymers 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000004760 aramid Substances 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 description 14
- 238000001514 detection method Methods 0.000 description 7
- 230000008439 repair process Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001069 Raman spectroscopy Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229940125782 compound 2 Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
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- G—PHYSICS
- 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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
- G01K1/146—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations arrangements for moving thermometers to or from a measuring position
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Abstract
The invention provides a method and a device for overhauling a temperature measuring optical fiber of an industrial kiln, wherein the method comprises the following steps: providing one or more through holes in the industrial kiln, the through holes extending radially from a housing of the industrial kiln to a liner of the industrial kiln; set up temperature measurement optic fibre along industrial kiln's circumference at the inside lining, temperature measurement optic fibre includes: replacing the optical fiber core and the initial optical fiber core; leading out two ends of the initial optical fiber core from the through holes respectively, and connecting the two ends of the initial optical fiber core with temperature measurement sensing modules for detecting the lining temperature of the industrial kiln respectively; judging whether the temperature measuring optical fiber is damaged or not through the temperature measuring sensing module, acquiring a first judgment result, if the first judgment result is that the temperature measuring optical fiber is damaged, disconnecting the initial optical fiber core from the temperature measuring sensing module, and respectively connecting the two ends of the replaced optical fiber core with the temperature measuring sensing module to finish the overhaul of the temperature measuring optical fiber; according to the method, the temperature measuring optical fiber containing the replacement optical fiber core and the initial optical fiber core is arranged on the inner liner of the industrial kiln along the circumferential direction of the industrial kiln, so that the temperature measuring optical fiber is overhauled, and the method is convenient to implement.
Description
Technical Field
The invention relates to the field of detection, in particular to a method and a device for overhauling a temperature measuring optical fiber of an industrial kiln.
Background
At present, a large number of industrial furnaces are high-temperature reaction containers, the furnaces are basically provided with cooling equipment and refractory linings, such as iron-making blast furnaces, the temperature of the linings of the industrial furnaces needs to be detected and early warned aiming at the high-temperature reaction, safety accidents such as high-temperature molten iron burning through of the blast furnaces are prevented, and huge economic losses are caused to enterprises. At present, thermocouples are generally adopted to detect the temperature of the lining of the industrial kiln, but the thermocouples are generally spaced by 1-3 m, the temperature monitoring points are limited, a large monitoring blind area exists between every two adjacent thermocouples, the comprehensive and full-coverage monitoring of the lining temperature cannot be realized, and great potential safety hazards are brought to the production of a blast furnace.
The inventor finds that the optical fiber is laid in a circumferential, radial and height mode in the lining of the industrial furnace, the full-coverage monitoring of the temperature of the lining of the industrial furnace can be realized by utilizing a distributed optical fiber temperature measurement principle, but because the service time of the industrial furnace is very long, generally within 10-15 years, once the optical fiber is laid in the lining of the industrial furnace, the optical fiber is used as a first-generation service, and the lining of the industrial furnace works at high temperature for a long time, expansion and contraction are often generated, so that the lining can move greatly, and therefore the condition of optical fiber breakage can exist.
Disclosure of Invention
In view of the above disadvantages of the prior art, the present invention provides a method and an apparatus for repairing a temperature measuring optical fiber in an industrial kiln, so as to solve the problem that the optical fiber in the industrial kiln is inconvenient to repair and maintain in the prior art.
The invention provides a method for overhauling a temperature measuring optical fiber of an industrial kiln, which comprises the following steps:
providing one or more through holes in the industrial kiln, the through holes extending radially from a housing of the industrial kiln to an inner liner of the industrial kiln;
the inside lining sets up the temperature measurement optic fibre along industrial kiln's circumference, the temperature measurement optic fibre includes: replacing the optical fiber core and the initial optical fiber core;
leading out two ends of the initial optical fiber core from the through holes respectively, and connecting the two ends of the initial optical fiber core with temperature measurement sensing modules for detecting the lining temperature of the industrial kiln respectively;
and judging whether the temperature measuring optical fiber is damaged or not through the temperature measuring sensing module to obtain a first judgment result, if the temperature measuring optical fiber is damaged, disconnecting the connection between the initial optical fiber core and the temperature measuring sensing module, and respectively connecting the two ends of the replaced optical fiber core with the temperature measuring sensing module to complete the overhaul of the temperature measuring optical fiber.
Optionally, the step of determining whether the temperature measurement optical fiber is damaged by the temperature measurement sensing module includes:
controlling the temperature measurement sensing module to emit a light signal to one end of the temperature measurement optical fiber and receive a light signal reflected by the other end of the temperature measurement optical fiber;
and if the temperature measurement sensing module does not receive the reflected optical signal, judging that the temperature measurement optical fiber is damaged, and further acquiring a first judgment result.
Optionally, after the step of connecting the two ends of the replacement optical fiber core with the temperature measurement sensing module respectively, the method further includes:
controlling the temperature measurement sensing module to emit a light signal to one end of the temperature measurement optical fiber and receive a light signal reflected by the other end of the temperature measurement optical fiber;
and if the temperature measurement sensing module does not receive the reflected optical signal, judging that the replaced optical fiber core and the initial optical fiber core are damaged, further acquiring a second judgment result, and overhauling the temperature measurement optical fiber according to the second judgment result.
Optionally, the step of repairing the temperature measuring optical fiber according to the second determination result includes:
an optical fiber overhauling module for overhauling the temperature measuring optical fiber is arranged on one surface, far away from the lining, of the shell of the industrial kiln, and the optical fiber overhauling module corresponds to the through hole;
if the second judgment result is that the replacement optical fiber core and the initial optical fiber core are damaged, positioning the damaged temperature measurement optical fiber to obtain the positioning information of the damaged temperature measurement optical fiber, wherein the positioning information is the position information of two optical fiber maintenance modules adjacent to the damaged temperature measurement optical fiber;
and overhauling the temperature measuring optical fiber according to the position information.
Optionally, the step of repairing the temperature measuring optical fiber according to the position information includes:
according to the position information, the temperature measurement optical fibers at the two adjacent optical fiber maintenance modules are respectively cut off, and then the temperature measurement optical fibers are divided into: a damaged section, an undamaged section;
and connecting two ends of the overhaul standby optical fiber with two ends of the undamaged section respectively to finish overhaul of the temperature measuring optical fiber.
Optionally, the optical fiber repair module includes: the optical fiber protection box, the orifice sealing block for sealing the through hole, the optical fiber protection sleeve for fixing the temperature measurement optical fiber, the sealing flange for sealing the temperature measurement optical fiber and the optical fiber sealing cutting sleeve flange for secondary sealing;
the optical fiber protection box is arranged on the first surface, an orifice sealing block, an optical fiber protection sleeve, a sealing flange and an optical fiber sealing sleeve flange are arranged in the optical fiber protection box, the orifice sealing block is arranged on the first surface and matched with the through hole, one end of the optical fiber protection sleeve penetrates through the orifice sealing block and is connected with the through hole, the other end of the optical fiber protection sleeve is provided with the sealing flange, the sealing flange is far away from one end of the optical fiber connection sleeve is provided with the optical fiber sealing sleeve flange, two ends of temperature measurement optical fibers sequentially penetrate through the through hole, the orifice sealing block, the optical fiber protection sleeve, the sealing flange and the sealing sleeve flange and are respectively connected with the temperature measurement sensing module, and the first surface is the shell of the industrial kiln is far away from one surface of the lining.
Optionally, after the step of connecting the two ends of the replacement optical fiber core with the temperature measurement sensing module respectively, the method further includes:
controlling the temperature measurement sensing module to emit a light signal to one end of the temperature measurement optical fiber and receive a light signal reflected by the other end of the temperature measurement optical fiber;
if the temperature measurement sensing module does not receive the reflected optical signal, judging that the replacement optical fiber core and the initial optical fiber core are damaged, and further acquiring a second judgment result;
if the second judgment result is that the replacement optical fiber core and the initial optical fiber core are damaged, controlling the temperature measurement sensing module to respectively emit optical signals to two ends of the temperature measurement optical fiber;
controlling the temperature measurement sensing module to respectively receive optical signals reflected from two ends of the temperature measurement optical fiber and convert the reflected optical signals into temperature signals; and finishing the overhaul of the temperature measuring optical fiber.
Optionally, the temperature measuring optical fiber sequentially includes from outside to inside: the optical fiber replacement device comprises a protective shell, aramid fibers and a metal hose, wherein the replacement optical fiber core and the initial optical fiber core are arranged in the metal hose.
Optionally, a distance between two adjacent scattering regions of the temperature measuring optical fiber is less than or equal to 0.5 m.
The invention also provides a maintenance device for the temperature measuring optical fiber of the industrial kiln, which comprises the following components:
one or more through holes extending radially from a casing of the industrial kiln to a lining of the industrial kiln;
the inside lining is equipped with temperature measurement optic fibre along industrial kiln's circumference, temperature measurement optic fibre includes: replacing the optical fiber core and the initial optical fiber core;
and two ends of the initial optical fiber core are respectively led out from the through holes and are respectively connected with a temperature measurement sensing module for detecting the lining temperature of the industrial kiln.
The invention has the beneficial effects that: according to the maintenance method of the temperature measuring optical fiber of the industrial kiln, the temperature measuring optical fiber containing the replacement optical fiber core and the initial optical fiber core is arranged on the inner liner of the industrial kiln along the circumferential direction of the industrial kiln, two ends of the temperature measuring optical fiber are respectively connected with the temperature measuring sensing module for detecting the temperature of the inner liner of the industrial kiln, whether the temperature measuring optical fiber is damaged or not is judged through the temperature measuring sensing module, if the temperature measuring optical fiber is damaged, the connection between the initial optical fiber core and the temperature measuring sensing module is disconnected, two ends of the replacement optical fiber core are respectively connected with the temperature measuring sensing module, maintenance of the temperature measuring optical fiber in the industrial kiln is achieved, reliability is high, and implementation is convenient.
Drawings
FIG. 1 is a schematic flow chart of a method for overhauling a temperature measuring optical fiber of an industrial kiln in the embodiment of the invention;
FIG. 2 is another schematic flow chart of a method for overhauling a temperature measuring optical fiber of an industrial kiln in the embodiment of the invention;
FIG. 3 is another schematic flow chart of a method for overhauling a temperature measuring optical fiber of an industrial kiln in the embodiment of the invention;
FIG. 4 is a schematic maintenance diagram of a maintenance method of temperature measuring optical fibers of an industrial kiln in the embodiment of the invention;
FIG. 5 is a schematic structural diagram of an overhauling device for temperature measuring optical fibers of an industrial kiln in the embodiment of the invention;
FIG. 6 is a schematic structural diagram of a fiber optic service module in an embodiment of the invention
The attached drawings are as follows:
1, lining;
2, filling joint material;
3, cooling equipment;
4, a shell;
5, an optical fiber maintenance module;
501 orifice sealing block
502 optical fiber protective sleeve
503 sealing flange
504 optical fiber sealing ferrule flange
505 a fiber optic protective case;
6, measuring temperature by using optical fibers;
7 temperature measurement sensing module I
8, a second temperature measurement sensing module;
9 a display module;
10 service spare optical fiber
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
The inventor finds that at present, thermocouples are adopted to detect the temperature of the lining of the industrial kiln, the temperature monitoring points are limited, a large monitoring blind area exists between two adjacent thermocouples, the comprehensive and full-coverage monitoring of the lining temperature cannot be realized, great potential safety hazards are brought to blast furnace production, optical fibers can be laid in the lining of the industrial kiln in a circumferential, radial and height mode, the full-coverage monitoring of the lining temperature of the industrial kiln is realized by utilizing a distributed optical fiber temperature measurement principle, but the lining of the industrial kiln is a first-generation furnace service after being laid in the lining of the industrial kiln generally in 10-15 years due to long-term operation at high temperature, thermal expansion and cold contraction are often generated, the lining can move greatly, and the condition that the optical fibers break possibly exists due to continuous temperature measurement of the optical fibers, once the optical fiber is broken, the temperature detection of the whole optical fiber is disabled, so that the maintenance method of the temperature-measuring optical fiber 6 of the industrial kiln is characterized in that the temperature-measuring optical fiber 6 comprising a plurality of optical fiber cores is respectively arranged on the inner liner 1 of the industrial kiln along the circumferential direction, the radial direction and the height direction of the industrial kiln, two ends of the temperature-measuring optical fiber 6 are respectively connected with the temperature-measuring sensing module, whether the temperature-measuring optical fiber is damaged or not is judged through the temperature-measuring sensing module, the temperature-measuring optical fiber 6 is maintained according to the judgment result, the implementation is convenient, and the feasibility is high.
As shown in fig. 1, an industrial furnace is sequentially provided with a lining 1, a joint compound 2, a cooling device 3, and a shell 4 from inside to outside, and the method for overhauling the temperature measuring optical fiber 6 of the industrial furnace provided by this embodiment includes:
s101: providing one or more through holes in the industrial kiln, said through holes extending radially from the housing 4 of the industrial kiln to the lining 1 of the industrial kiln;
s102: liner 1 sets up temperature measurement optic fibre 6 along industrial kiln's circumference, temperature measurement optic fibre 6 includes: replacing the optical fiber core and the initial optical fiber core; in practical application, an initial optical fiber core is generally used and is in a conducting state for transmitting optical signals, and other replacement optical fiber cores are used for standby or maintenance;
s103: leading out two ends of the initial optical fiber core from the through holes respectively, and connecting the two ends of the initial optical fiber core with temperature measuring sensing modules for detecting the temperature of the lining 1 of the industrial kiln respectively; the temperature measuring optical fibers 6 are arranged on the lining 1 along the circumferential direction of the industrial kiln, and two ends of the temperature measuring optical fibers 6 are led out and then are respectively connected with the temperature measuring sensing modules, so that the full-coverage continuous monitoring of the temperature of the lining 1 of the industrial kiln is realized, and a temperature monitoring blind area is effectively avoided;
s104: judging whether the temperature measuring optical fiber is damaged or not through the temperature measuring sensing module to obtain a first judgment result; wherein, judge through temperature measurement sensing module whether the step of temperature measurement optic fibre damage includes: controlling the temperature measurement sensing module to emit a light signal to one end of the temperature measurement optical fiber 6 and receive the light signal reflected by the other end of the temperature measurement optical fiber 6; if the temperature measurement sensing module does not receive the reflected optical signal, the temperature measurement optical fiber 6 is judged to be damaged, and a first judgment result is obtained; for example: the temperature measurement sensing module is controlled to emit a light signal to one end of the temperature measurement optical fiber 6 and receive an optical signal reflected by the other end of the temperature measurement optical fiber 6, if the temperature measurement sensing module does not receive the reflected optical signal, or the time that the temperature measurement sensing module does not receive the reflected optical signal exceeds a preset time threshold value, the temperature measurement optical fiber 6 is judged to be damaged, whether the temperature measurement optical fiber 6 is damaged or not is judged through the transmission state of the signal, and the operation is convenient and the reliability is high;
s105: if the first judgment result shows that the temperature measuring optical fiber 6 is damaged, the connection between the initial optical fiber core and the temperature measuring sensing module is disconnected, and two ends of the replacement optical fiber core are respectively connected with the temperature measuring sensing module to complete the overhaul of the temperature measuring optical fiber 6. Through the disconnection of the initial optical fiber core and the temperature measurement sensing module, the two ends of the replaced optical fiber core are respectively connected with the temperature measurement sensing module, the replacement of the initial optical fiber core is completed, and then the overhaul of the temperature measurement optical fiber 6 is completed, so that the operability is high, the realization is easy, and the reliability is high. For example: and when the temperature measuring optical fiber 6 is judged to be damaged, the connection between the initial optical fiber core and the temperature measuring sensing module is disconnected, and two ends of the replacement optical fiber core are respectively connected with the temperature measuring sensing module, so that the temperature measuring optical fiber 6 forms a complete closed loop again, and the overhaul of the temperature measuring optical fiber 6 is completed.
In some embodiments, after completing the maintenance of the temperature measuring optical fiber 6, the maintenance verification of the temperature measuring optical fiber 6 may be further performed, where the step of performing the maintenance verification includes: controlling the temperature measurement sensing module to emit a light signal to one end of the temperature measurement optical fiber 6 and receive the light signal reflected by the other end of the temperature measurement optical fiber 6; if the temperature measurement sensing module receives an optical signal reflected by the other end of the temperature measurement optical fiber 6, the temperature measurement optical fiber 6 is judged to be in a normal state, and then the temperature measurement sensing module transmits an optical signal to the temperature measurement optical fiber 6 to recalibrate the monitoring point of the temperature measurement optical fiber 6, so that the maintenance and verification of the temperature measurement optical fiber 6 are completed. Through the examination and repair of the temperature measurement optical fiber 6, whether the temperature measurement optical fiber 6 after examination and repair can work normally or not can be determined, and certain potential safety hazards are reduced.
As shown in fig. 2, in some embodiments, the method for overhauling the temperature measuring optical fiber 6 of the industrial kiln further includes:
s201: providing one or more through holes in the industrial kiln, said through holes extending radially from the housing 4 of the industrial kiln to the lining 1 of the industrial kiln;
s202: liner 1 sets up temperature measurement optic fibre 6 along industrial kiln's circumference, temperature measurement optic fibre 6 includes: replacing the optical fiber core and the initial optical fiber core;
s203: leading out two ends of the initial optical fiber core from the through holes respectively, and connecting the two ends of the initial optical fiber core with temperature measuring sensing modules for detecting the temperature of the lining 1 of the industrial kiln respectively; the temperature measuring optical fibers 6 are arranged on the lining 1 along the circumferential direction of the industrial kiln, and two ends of the temperature measuring optical fibers 6 are led out and then are respectively connected with the temperature measuring sensing modules, so that the full-coverage continuous monitoring of the temperature of the lining 1 of the industrial kiln is realized, and a temperature monitoring blind area is effectively avoided;
s204: referring to fig. 6, an optical fiber maintenance module 5 for maintaining the temperature measuring optical fiber 6 is disposed on a surface of the casing 4 of the industrial kiln, the surface being away from the liner 1, and the optical fiber maintenance module 5 corresponds to the through hole;
the fiber repair module 5 includes: an optical fiber protection box 505, an orifice sealing block 501 for sealing the through hole, an optical fiber protection sleeve 502 for fixing the temperature measuring optical fiber 6, a sealing flange 503 for sealing the temperature measuring optical fiber 6, and an optical fiber sealing ferrule flange 504 for secondary sealing;
the optical fiber protection box 505 is arranged on a first surface, the orifice sealing block 501, the optical fiber protection sleeve 502, the sealing flange 503 and the optical fiber sealing ferrule flange 504 are arranged in the optical fiber protection box 505, the orifice sealing block 501 is arranged on the first surface and matched with the through hole, one end of the optical fiber protection sleeve 502 penetrates through the orifice sealing block 501 and is connected with the through hole, the other end of the optical fiber protection sleeve 502 is provided with the sealing flange 503, one end of the sealing flange 503, which is far away from the optical fiber connection sleeve, is provided with the optical fiber sealing ferrule flange 504, one end of the temperature measurement optical fiber 6 is led out of the shell 4 of the industrial kiln from the through hole, the orifice sealing block 501, the optical fiber protection sleeve 502, the sealing flange 503 and the sealing ferrule flange in sequence and is led into the lining 1 of the industrial kiln from the sealing ferrule flange 503, the optical fiber protection sleeve 502, the orifice sealing block 501 and the, namely, the temperature measuring optical fiber 6 sequentially penetrates through the optical fiber overhaul module 5, two ends of the temperature measuring optical fiber 6 are respectively connected with the temperature measuring sensing module, and the first surface is the surface of the shell 4 of the industrial kiln, which is far away from the lining 1; by arranging the optical fiber overhauling module 5, the sealing performance of the industrial kiln can be enhanced, the leakage of high-temperature liquid or gas in the industrial kiln caused by punching is avoided, and meanwhile, the temperature measuring optical fiber 6 is overhauled by the optical fiber overhauling module 5, so that the temperature measuring optical fiber 6 is overhauled more conveniently and rapidly; in some embodiments, two ends of the temperature measuring optical fiber 6 respectively penetrate through the through holes and are respectively connected with the temperature measuring sensing modules, and the through holes may not be provided with an optical fiber protective shell;
s205: controlling the temperature measurement sensing module to emit a light signal to one end of the temperature measurement optical fiber 6 and receive the light signal reflected by the other end of the temperature measurement optical fiber 6;
s206: if the temperature measurement sensing module does not receive the reflected optical signal, the temperature measurement optical fiber 6 is judged to be damaged, and a first judgment result is obtained;
s207: if the first judgment result is that the temperature measuring optical fiber 6 is damaged, the connection between the initial optical fiber core and the temperature measuring sensing module is disconnected, and two ends of the replacement optical fiber core are respectively connected with the temperature measuring sensing module;
s208: controlling the temperature measurement sensing module to emit a light signal to one end of the temperature measurement optical fiber 6 and receive the light signal reflected by the other end of the temperature measurement optical fiber 6;
s209: if the temperature measurement sensing module does not receive the reflected optical signal, judging that the replacement optical fiber core and the initial optical fiber core are damaged, and further acquiring a second judgment result; for example: after the initial optical fiber core is switched to the replacement optical fiber core, the temperature measurement sensing module transmits an optical signal to the temperature measurement optical fiber 6, and fails to receive the optical signal reflected by the temperature measurement optical fiber 6, and determines that both the replacement optical fiber core and the initial optical fiber core are damaged, in some embodiments, a plurality of replacement optical fiber cores may be provided, when the temperature measurement optical fiber 6 is damaged as a first determination result, the initial optical fiber core may be switched to any one of the replacement optical fiber cores, when the replacement optical fiber core also fails to perform signal transmission, the replacement optical fiber cores are sequentially switched to other replacement optical fiber cores, and when all the replacement optical fiber cores fail to perform signal transmission and conduction, the replacement optical fiber core and the initial optical fiber core are determined to be damaged;
s210: if the second judgment result is that both the replacement optical fiber core and the initial optical fiber core are damaged, positioning the damaged temperature measuring optical fiber 6 to obtain the positioning information of the damaged temperature measuring optical fiber 6, wherein the positioning information is the position information of two optical fiber maintenance modules 5 adjacent to the damaged temperature measuring optical fiber 6; the damaged temperature measuring optical fiber 6 is positioned, the position information of two optical fiber maintenance modules 5 adjacent to the damaged temperature measuring optical fiber 6 is obtained, and the temperature measuring optical fiber 6 is maintained through the optical fiber maintenance modules 5, so that the operation is more convenient;
s211: according to the position information, the temperature measuring optical fibers 6 at the two adjacent optical fiber maintenance modules 5 are respectively cut off, and then the temperature measuring optical fibers 6 are divided into: a damaged section, an undamaged section; the damaged parts of the temperature measuring light rays are cut off by respectively cutting off the temperature measuring optical fibers 6 at the two adjacent optical fiber overhauling modules 5;
s212: and connecting two ends of the overhaul standby optical fiber 10 with two ends of the undamaged section respectively to finish overhaul of the temperature measuring optical fiber 6. Through with overhaul both ends of reserve optic fibre 10 respectively with the both ends of not damaging the section are connected, make temperature measurement optic fibre 6 reforms complete signal transmission return circuit, accomplishes the maintenance of temperature measurement optic fibre 6, the reliability is higher, and the implementation nature is stronger, provides the guarantee for the high-efficient safety in production of industrial furnace. Referring to fig. 4, for example: the two ends of the temperature measuring optical fiber 6 are respectively connected with the first temperature measuring sensing module 7, and according to the position information, the temperature measuring optical fibers 6 at the two adjacent optical fiber maintenance modules 5 are respectively cut off, so that the temperature measuring optical fibers 6 are divided into: the damaged section and the undamaged section are respectively connected with two ends of an overhaul standby optical fiber 10, in some embodiments, a temperature measurement optical fiber 6 can be further arranged along the radial direction of the industrial kiln, one end of the temperature measurement optical fiber 6 extends from a shell 4 of the industrial kiln to a lining 1 of the industrial kiln, one end, far away from the lining 1, of the temperature measurement optical fiber 6 is connected with a second temperature measurement sensing module 8, and the output end of the first temperature measurement sensing module 7 and the output end of the first temperature measurement sensing module 2 are respectively connected with the input end of a display module 9.
As shown in fig. 3, in some embodiments, the method for overhauling the temperature measuring optical fiber 6 of the industrial kiln further includes:
s301: providing one or more through holes in the industrial kiln, said through holes extending radially from the housing 4 of the industrial kiln to the lining 1 of the industrial kiln;
s302: liner 1 sets up temperature measurement optic fibre 6 along industrial kiln's circumference, temperature measurement optic fibre 6 includes: replacing the optical fiber core and the initial optical fiber core;
s303: leading out two ends of the initial optical fiber core from the through holes respectively, and connecting the two ends of the initial optical fiber core with temperature measuring sensing modules for detecting the temperature of the lining 1 of the industrial kiln respectively;
s304: controlling the temperature measurement sensing module to emit a light signal to one end of the temperature measurement optical fiber 6 and receive the light signal reflected by the other end of the temperature measurement optical fiber 6;
s305: if the temperature measurement sensing module does not receive the reflected optical signal, the temperature measurement optical fiber 6 is judged to be damaged, and a first judgment result is obtained;
s306: if the first judgment result is that the temperature measuring optical fiber 6 is damaged, the connection between the initial optical fiber core and the temperature measuring sensing module is disconnected, and two ends of the replacement optical fiber core are respectively connected with the temperature measuring sensing module;
s307: controlling the temperature measurement sensing module to emit a light signal to one end of the temperature measurement optical fiber 6 and receive the light signal reflected by the other end of the temperature measurement optical fiber 6;
s308: if the temperature measurement sensing module does not receive the reflected optical signal, judging that the replacement optical fiber core and the initial optical fiber core are damaged, and further acquiring a second judgment result;
s309: if the second judgment result is that the replacement optical fiber core and the initial optical fiber core are both damaged, controlling the temperature measurement sensing module to respectively emit optical signals to two ends of the temperature measurement optical fiber 6;
s310: controlling the temperature measurement sensing module to respectively receive optical signals reflected from two ends of the temperature measurement optical fiber 6 and converting the reflected optical signals into temperature signals; and finishing the overhaul of the temperature measuring optical fiber 6. The temperature measurement sensing module is controlled to respectively emit light signals to two ends of the temperature measurement optical fiber 6 and receive the light signals respectively emitted from the two ends of the temperature measurement optical fiber 6, the reflected light signals are respectively converted into temperature signals, the temperature signals are fed back, the temperature measurement optical fiber 6 is overhauled, the temperature measurement optical fiber 6 can continuously measure the temperature by changing the detection principle and the detection path of optical fiber temperature measurement, the monitoring point of damage of the temperature measurement optical fiber 6 is removed, and potential safety hazards in the production process of the industrial kiln are reduced. The detection mode that one original end of the temperature measurement optical fiber is input and the other end of the temperature measurement optical fiber is output is changed, the temperature measurement sensing module is switched to emit optical signals to the two ends of the temperature measurement optical fiber at the same time, and the optical signals reflected by the two ends of the temperature measurement optical fiber 6 are received, so that the temperature measurement optical fiber is overhauled. The temperature measurement sensing module in the invention mainly monitors the temperature of the lining 1 of the industrial furnace based on one or a combination of Raman scattering, Brillouin scattering and Rayleigh scattering, for example: based on the temperature measurement principle of a Rayleigh scattering optical frequency domain reflectometer, sweep laser is respectively input into two ends of the temperature measurement optical fiber 6, backward Rayleigh scattering light can generate spectral shift along with temperature change, real-time temperature can be accurately obtained through calculating the shift amount, the spatial resolution is high, and distributed temperature measurement of centimeter magnitude in a hectometer distance range can be realized.
In some embodiments, when the temperature measurement sensing module connected to the temperature measurement optical fiber 6 cannot transmit and receive optical signals at the same interface, the temperature measurement optical fiber 6 may be overhauled by switching different temperature measurement sensing modules.
In some embodiments, the thermometric optical fiber 6 comprises, in order from outside to inside: protective housing, aramid fiber, metal collapsible tube, be equipped with in the metal collapsible tube replace optic fibre core and initial optic fibre core, it can be many to replace the optic fibre core.
In some embodiments, the distance between two adjacent scattering regions of the thermometric optical fiber 6 is less than or equal to 0.5m, for example: the temperature measuring optical fiber 6 has a temperature measuring point at an interval of 0.5m along the circumferential direction of the industrial furnace, namely the spatial resolution of the temperature measuring point in the height direction of the industrial furnace is 0.5 m.
In some embodiments, when there are multiple damaged points in the temperature measuring optical fiber 6, the temperature measuring optical fiber 6 can be repaired by any one of the above-mentioned repair methods or a combination thereof. For example: the temperature measurement sensing module emits a light signal to one end of the temperature measurement optical fiber 6, if the light signal reflected by the other end of the temperature measurement optical fiber 6 is not received within a preset time threshold value, the temperature measurement optical fiber 6 is judged to be damaged, the temperature measurement optical fiber 6 can be overhauled by adopting a mode of switching an optical fiber core, or the damaged temperature measurement optical fiber 6 is positioned, the position information of two optical fiber overhauling modules 5 adjacent to the damaged temperature measurement optical fiber 6 is obtained, the temperature measurement optical fiber 6 is overhauled through the optical fiber overhauling modules, or the temperature measurement optical fiber 6 is overhauled by switching a detection principle and a detection path of the temperature measurement optical fiber 6, and when multiple damages are detected, the temperature measurement optical fiber 6 can be overhauled by adopting any combination of the methods.
This embodiment still provides an industrial kiln temperature measurement optic fibre 6's maintenance device, includes:
one or more through holes extending radially from the casing 4 of the industrial kiln to the lining 1 of the industrial kiln;
inside lining 1 is equipped with temperature measurement optic fibre 6 along industrial kiln's circumference, temperature measurement optic fibre 6 includes: replacing the optical fiber core and the initial optical fiber core;
leading out two ends of the initial optical fiber core from the through holes respectively, and connecting the two ends of the initial optical fiber core with temperature measuring sensing modules for detecting the temperature of the lining 1 of the industrial kiln respectively; through setting up the temperature measurement optic fibre 6 that contains replacement fiber core and initial fiber core along industrial kiln's circumference at inside lining 1 of industrial kiln, will the both ends of temperature measurement optic fibre 6 are connected with the temperature measurement sensing module who is used for detecting inside lining 1 temperature of industrial kiln respectively, through temperature measurement sensing module judges whether temperature measurement optic fibre 6 damages, if temperature measurement optic fibre 6 damages, then the disconnection initial fiber core with the connection of temperature measurement sensing module, will the both ends of replacement fiber core respectively with temperature measurement sensing module connects, can realize the maintenance to temperature measurement optic fibre 6 in the industrial kiln betterly, and the reliability is higher.
In some embodiments, an optical fiber maintenance module 5 for maintaining the temperature measuring optical fiber 6 is arranged on one side, away from the lining 1, of the shell 4 of the industrial kiln, and the optical fiber maintenance module 5 corresponds to the through hole; the temperature measuring optical fiber 6 is overhauled through the optical fiber overhauling module 5, and the implementation is convenient.
In some embodiments, a temperature measuring optical fiber 6 can be further arranged along the radial direction of the industrial kiln, one end of the temperature measuring optical fiber 6 extends from the shell 4 of the industrial kiln to the lining 1 of the industrial kiln, and the other end of the temperature measuring optical fiber 6 is connected with the temperature measuring sensing module.
For example: referring to fig. 4 to 6, temperature measuring optical fibers 6 are respectively disposed along the circumferential direction and the radial direction of the industrial kiln, and each temperature measuring optical fiber 6 includes: replace optic fibre core and initial optic fibre core, the both ends of the temperature measurement optic fibre 6 that sets up along industrial kiln circumference are connected with temperature measurement sensing module 1, and the one end of keeping away from industrial kiln inside lining 1 along the radial temperature measurement optic fibre 6 that sets up of industrial kiln is connected with temperature measurement sensing module 2, the output of temperature measurement sensing module one 7 and the output of temperature measurement sensing module two 8 are connected with display module 9 respectively, the casing 4 of industrial kiln is kept away from the one side setting of inside lining 1 is used for right the optic fibre that temperature measurement optic fibre 6 overhauls module 5, optic fibre overhauls module 5 with the through-hole is corresponding, optic fibre overhauls module 5 includes: an optical fiber protection box 505, an orifice sealing block 501 for sealing the through hole, an optical fiber protection sleeve 502 for fixing the temperature measuring optical fiber 6, a sealing flange 503 for sealing the temperature measuring optical fiber 6, and an optical fiber sealing ferrule flange 504 for secondary sealing; the optical fiber protection box 505 is arranged on a first surface, the orifice sealing block 501, the optical fiber protection sleeve 502, the sealing flange 503 and the optical fiber sealing ferrule flange 504 are arranged in the optical fiber protection box 505, the orifice sealing block 501 is arranged on the first surface and matched with the through hole, one end of the optical fiber protection sleeve 502 penetrates through the orifice sealing block 501 and is connected with the through hole, the other end of the optical fiber protection sleeve 502 is provided with the sealing flange 503, one end of the sealing flange 503, which is far away from the optical fiber connection sleeve, is provided with the optical fiber sealing ferrule flange 504, one end of the temperature measurement optical fiber 6 is led out of the shell 4 of the industrial kiln from the through hole, the orifice sealing block 501, the optical fiber protection sleeve 502, the sealing flange 503 and the sealing ferrule flange in sequence and is led into the lining 1 of the industrial kiln from the sealing ferrule flange 503, the optical fiber protection sleeve 502, the orifice sealing block 501 and the, the first surface is the surface of the shell 4 of the industrial kiln, which is far away from the lining 1; through setting up optic fibre and overhauing module 5, can strengthen the leakproofness of industrial kiln, avoid appearing the leakage of high temperature liquid or gas in the industrial kiln because punch, simultaneously, through optic fibre overhauls module 5 is right temperature measurement optic fibre 6 overhauls for it is more convenient to overhaul temperature measurement optic fibre 6.
In some embodiments, two ends of the temperature measuring optical fiber 6 respectively penetrate through the through holes and are respectively connected with the temperature measuring sensing modules, and the through holes may not be provided with an optical fiber protective shell.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. An overhauling method of temperature measuring optical fibers of an industrial kiln is characterized by comprising the following steps:
providing one or more through holes in the industrial kiln, the through holes extending radially from a housing of the industrial kiln to an inner liner of the industrial kiln;
the inside lining sets up the temperature measurement optic fibre along industrial kiln's circumference, the temperature measurement optic fibre includes: replacing the optical fiber core and the initial optical fiber core;
leading out two ends of the initial optical fiber core from the through holes respectively, and connecting the two ends of the initial optical fiber core with temperature measurement sensing modules for detecting the lining temperature of the industrial kiln respectively;
and judging whether the temperature measuring optical fiber is damaged or not through the temperature measuring sensing module to obtain a first judgment result, if the temperature measuring optical fiber is damaged, disconnecting the connection between the initial optical fiber core and the temperature measuring sensing module, and respectively connecting the two ends of the replacement optical fiber core with the temperature measuring sensing module to complete the overhaul of the temperature measuring optical fiber.
2. The method for overhauling the temperature measuring optical fiber of the industrial kiln and furnace as claimed in claim 1, wherein the step of judging whether the temperature measuring optical fiber is damaged by the temperature measuring sensing module comprises the steps of:
controlling the temperature measurement sensing module to emit a light signal to one end of the temperature measurement optical fiber and receive a light signal reflected by the other end of the temperature measurement optical fiber;
and if the temperature measurement sensing module does not receive the reflected optical signal, judging that the temperature measurement optical fiber is damaged, and further acquiring a first judgment result.
3. The method for overhauling the temperature measuring optical fiber of the industrial kiln as recited in claim 1, wherein the step of connecting the two ends of the replaced optical fiber core with the temperature measuring sensing modules respectively further comprises the following steps:
controlling the temperature measurement sensing module to emit a light signal to one end of the temperature measurement optical fiber and receive a light signal reflected by the other end of the temperature measurement optical fiber;
and if the temperature measurement sensing module does not receive the reflected optical signal, judging that the replaced optical fiber core and the initial optical fiber core are damaged, further acquiring a second judgment result, and overhauling the temperature measurement optical fiber according to the second judgment result.
4. The method for overhauling the temperature measuring optical fiber of the industrial kiln as recited in claim 3, wherein the step of overhauling the temperature measuring optical fiber according to the second judgment result comprises the steps of:
an optical fiber overhauling module for overhauling the temperature measuring optical fiber is arranged on one surface, far away from the lining, of the shell of the industrial kiln, and the optical fiber overhauling module corresponds to the through hole;
if the second judgment result is that the replacement optical fiber core and the initial optical fiber core are damaged, positioning the damaged temperature measurement optical fiber to obtain the positioning information of the damaged temperature measurement optical fiber, wherein the positioning information is the position information of two optical fiber maintenance modules adjacent to the damaged temperature measurement optical fiber;
and overhauling the temperature measuring optical fiber according to the position information.
5. The method for overhauling the temperature measuring optical fiber of the industrial kiln as recited in claim 4, wherein the step of overhauling the temperature measuring optical fiber according to the position information comprises the steps of:
according to the position information, the temperature measurement optical fibers at the two adjacent optical fiber maintenance modules are respectively cut off, and then the temperature measurement optical fibers are divided into: a damaged section, an undamaged section;
and connecting two ends of the overhaul standby optical fiber with two ends of the undamaged section respectively to finish overhaul of the temperature measuring optical fiber.
6. The method for overhauling the temperature measuring optical fiber of the industrial kiln as recited in claim 5, wherein the optical fiber overhauling module comprises: the optical fiber protection box, the orifice sealing block for sealing the through hole, the optical fiber protection sleeve for fixing the temperature measurement optical fiber, the sealing flange for sealing the temperature measurement optical fiber and the optical fiber sealing cutting sleeve flange for secondary sealing;
the optical fiber protection box is arranged on the first surface, an orifice sealing block, an optical fiber protection sleeve, a sealing flange and an optical fiber sealing sleeve flange are arranged in the optical fiber protection box, the orifice sealing block is arranged on the first surface and matched with the through hole, one end of the optical fiber protection sleeve penetrates through the orifice sealing block and is connected with the through hole, the other end of the optical fiber protection sleeve is provided with the sealing flange, the sealing flange is far away from one end of the optical fiber connection sleeve is provided with the optical fiber sealing sleeve flange, two ends of temperature measurement optical fibers sequentially penetrate through the through hole, the orifice sealing block, the optical fiber protection sleeve, the sealing flange and the sealing sleeve flange and are respectively connected with the temperature measurement sensing module, and the first surface is the shell of the industrial kiln is far away from one surface of the lining.
7. The method for overhauling the temperature measuring optical fiber of the industrial kiln as recited in claim 1, wherein the step of connecting the two ends of the replaced optical fiber core with the temperature measuring sensing modules respectively further comprises the following steps:
controlling the temperature measurement sensing module to emit a light signal to one end of the temperature measurement optical fiber and receive a light signal reflected by the other end of the temperature measurement optical fiber;
if the temperature measurement sensing module does not receive the reflected optical signal, judging that the replacement optical fiber core and the initial optical fiber core are damaged, and further acquiring a second judgment result;
if the second judgment result is that the replacement optical fiber core and the initial optical fiber core are damaged, controlling the temperature measurement sensing module to respectively emit optical signals to two ends of the temperature measurement optical fiber;
controlling the temperature measurement sensing module to respectively receive optical signals reflected from two ends of the temperature measurement optical fiber and convert the reflected optical signals into temperature signals; and finishing the overhaul of the temperature measuring optical fiber.
8. The overhauling method for the temperature measuring optical fiber of the industrial kiln and furnace as claimed in claim 1, wherein the temperature measuring optical fiber comprises from outside to inside in sequence: the optical fiber replacement device comprises a protective shell, aramid fibers and a metal hose, wherein the replacement optical fiber core and the initial optical fiber core are arranged in the metal hose.
9. The overhauling method for the temperature measuring optical fiber of the industrial kiln as recited in claim 1, wherein the distance between two adjacent scattering areas of the temperature measuring optical fiber is less than or equal to 0.5 m.
10. The utility model provides an industrial kiln temperature measurement optic fibre overhauls device which characterized in that includes:
one or more through holes extending radially from a casing of the industrial kiln to a lining of the industrial kiln;
the inside lining is equipped with temperature measurement optic fibre along industrial kiln's circumference, temperature measurement optic fibre includes: replacing the optical fiber core and the initial optical fiber core;
and two ends of the initial optical fiber core are respectively led out from the through holes and are respectively connected with a temperature measurement sensing module for detecting the lining temperature of the industrial kiln.
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