CN109405999B - Simulation experiment device for monitoring temperature change of outer wall of coal gasifier - Google Patents
Simulation experiment device for monitoring temperature change of outer wall of coal gasifier Download PDFInfo
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- CN109405999B CN109405999B CN201811242167.3A CN201811242167A CN109405999B CN 109405999 B CN109405999 B CN 109405999B CN 201811242167 A CN201811242167 A CN 201811242167A CN 109405999 B CN109405999 B CN 109405999B
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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
- G01K11/3206—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 at discrete locations in the fibre, e.g. using Bragg scattering
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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
- G01K1/08—Protective devices, e.g. casings
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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
- G01K1/143—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations for measuring surface temperatures
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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
- G01K11/324—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 using Raman scattering
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Abstract
A simulation experiment device for monitoring the temperature change of the outer wall of a coal gasifier comprises: the device comprises a simulation furnace (1), a heating device group (2), a first fixing and adjusting device (3), a temperature monitoring and fixing device (4), a temperature detection device (5), an isolation box (7), a support table (8), a heating controller group (13), a power supply connecting device (14) and the like. The heating device group (2) heats the simulation furnace (1) to simulate the temperature change of the coal gasifier in different working states, provides a device capable of monitoring the temperature change of the outer wall of the coal gasifier in real time in a laboratory environment, provides experimental conditions for monitoring the temperature of the outer wall of the coal gasifier, and creates conditions for researchers to find a monitoring method for monitoring the temperature change of the outer wall of the coal gasifier in real time.
Description
Technical Field
The invention relates to the field of coal gasifier temperature detection and monitoring, in particular to a simulation experiment device for monitoring the temperature change of the outer wall of a coal gasifier.
Background
The coal gasification furnace is an important reaction device in the water-coal-slurry gasification device, the temperature of a combustion chamber in the gasification furnace reaches 1000-1700 ℃ during operation, under the general condition, the temperature of a furnace wall of the coal gasification furnace reaches about 200 ℃ during normal operation, however, refractory bricks lined in the combustion chamber can be corroded at high temperature, and are washed by heated gas and molten slag, so that the refractory bricks are continuously thinned, under certain conditions, due to the defect of brick laying, the refractory bricks can fall off, the gas enters through brick seams to increase the temperature of the surface of the furnace wall of the gasification furnace to 300 ℃ or even higher, under the condition, the strength of the metal outer wall of the pressurized gasification furnace is reduced, and the furnace wall of the gasification furnace can deform under stress. Therefore, in order to ensure the normal, safe and effective operation of the gasification furnace, the temperature of the surface of the furnace wall needs to be monitored in real time, an alarm is given when the temperature rises, the temperature of each point on the surface of the furnace wall needs to be monitored in real time because the falling position of a local refractory brick is random, and each temperature monitoring point reflects the temperature condition of a detection point on the outer wall of the furnace, so that the actual thickness and the replacement state of the refractory brick can be judged. However, the diameter of the gasification furnace is about 3 meters, the surface area is too large, and at present, three measurement methods are mainly used for measuring the temperature of the surface of the furnace wall of the gasification furnace: the traditional surface thermocouple, the cable temperature measurement on the surface of the gasification furnace and the thermal infrared imager are adopted, but the thermocouple cannot cover the whole surface furnace wall, the cable temperature measurement cannot be accurately positioned, the thermal infrared imager is expensive in cost, and the working environment does not exceed 50 ℃, so that the existing monitoring method for the temperature of the outer wall of the gasification furnace still cannot be well solved.
With the development of the distributed optical fiber temperature measurement technology, the distributed optical fiber temperature measurement system utilizes the raman scattering principle and the optical time domain reflection technology, obtains the temperature and the position of a detection point through the change of the anti-stokes light intensity in the optical fiber influenced by the temperature, and is already applied in an industrial field, but is limited by the influence of the temperature resistance intensity of an optical fiber coating layer, and the distributed optical fiber temperature measurement system cannot be directly applied to the temperature monitoring of the outer wall of the coal gasifier, so that an experimental device for simulating the temperature change of the outer wall of the coal gasifier in a laboratory is needed to be provided, the experimental exploration of the temperature detection and monitoring of the outer wall of the coal gasifier is further carried out, and due to the low price of the optical fiber, the distributed optical fiber temperature measurement system can be fully covered on the outer wall of the coal gasifier, and if the distributed optical fiber.
Disclosure of Invention
In view of the above problems, the present invention is to achieve the above "great convenience".
In order to realize the aim of the invention, the invention provides a simulation experiment device for monitoring the temperature change of the outer wall of a coal gasifier, which comprises a simulation furnace, wherein first fixing and adjusting devices for fixing temperature-measuring optical fibers are arranged on the outer part of the simulation furnace in an annular and equidistant way around the periphery, a heating device group is arranged in the simulation furnace, and the simulation furnace and the heating device group are both arranged at the corresponding positions of the table top of a supporting table;
the supporting platform is in a round cake shape, a circular groove which is as large as the bottom of the simulation furnace is formed in the center of the table top of the supporting platform, the groove 84 is used for placing the simulation furnace, a hollow column hole for placing the heating device group is formed in the groove, and a first hole for allowing a power supply line to enter is correspondingly formed in the lower portion of the hollow column hole;
the edge of the supporting table is also provided with a concave rail, a temperature monitoring fixing device is arranged in the concave rail, and a temperature detection device which is tightly attached to the outer wall of the simulation furnace and used for monitoring the temperature of the simulation furnace is fixed by the temperature monitoring fixing device;
a wire pipe which is connected with a power supply line in a matching manner and heats the heating device group is arranged at the bottom of the groove of the supporting platform, and a second hole is formed in the bottom of the wire pipe;
a three-dimensional protective isolation box is arranged outside the support table and the simulation furnace, an observation window is arranged on at least one side of the isolation box, a wire arranging hole is arranged at the bottom of the isolation box, supporting legs are arranged at four corners of the bottom of the isolation box, and a third hole corresponding to the second hole is arranged at the center of the bottom surface of the isolation box;
the heating device group is connected with a heating controller group arranged outside the isolation box through the wire pipe through a power supply line, and the heating controller group is connected with a power supply connecting device.
Furthermore, the simulation furnace is formed by adopting a one-step forming mode of high-temperature-resistant boron nitride materials, the inner diameter of the simulation furnace is not less than one meter, and the inside of the simulation furnace is divided into four equal spaces.
Furthermore, at least two groups of heating devices in the heating device group are mutually independent and adjustable.
Furthermore, the first fixed adjusting devices are arranged at least three times per week when the simulated furnace is arranged at equal intervals for one week, and are arranged at least two weeks on the outer wall of the simulated furnace;
the first fixing and adjusting device comprises a first fixing seat fixed with the furnace wall of the simulation furnace in a punching and inserting mode, the first fixing seat is solid at the bottom, a first strip-shaped opening is formed in the middle upper part of the first fixing seat, a half-opening-shaped notch is formed in the bottom of the first adjusting nut, and the first adjusting nut and the first fixing seat are matched in a screw hole screwing mode.
Furthermore, the support platform is made of ceramic materials with poor heat conductivity through one-step molding.
Furthermore, the temperature monitoring fixing device comprises a base matched with the concave rail, a square upright rod and a second fixing and adjusting device arranged at the upright rod;
the second fixing and adjusting device comprises a second fixing seat, a fourth hole for fixing the upright rod and a fifth hole for fixing the temperature detection device are respectively arranged on the second fixing seat, and the opening directions of the fourth hole and the fifth hole are mutually vertical;
the fourth hole is provided with a second adjusting nut which is adjusted in a matched mode through screw hole screwing, and the fifth hole is provided with a third adjusting nut which is adjusted in a matched mode through screw hole screwing.
Furthermore, the temperature detection device adopts a temperature measuring rod based on a thermocouple type.
Furthermore, the isolation box is made of stainless steel materials, the top of the isolation box can be detached, and an observation window matched with the isolation box is made of high-temperature-resistant and pressure-resistant transparent glass materials.
Further, the experimental device is used as follows:
step one, opening the top of the isolation box, correspondingly placing the simulation furnace, the heating device group, the support table and the temperature monitoring and fixing device in the isolation box, and simultaneously aligning the second hole with the third hole;
secondly, respectively connecting the power supply line with the heating device group through the pipeline, and correspondingly connecting the power supply line with the heating controller group and the power supply connecting device which are arranged outside the isolation box;
thirdly, leading the temperature measuring optical fiber into the isolation box through a wire arranging hole arranged on the isolation box, winding and fixing the temperature measuring optical fiber on the outer wall of the simulation furnace in an annular manner through the first fixing and adjusting device, and further leading out redundant temperature measuring optical fiber from the wire arranging hole;
fourthly, the temperature measuring end of the temperature detecting device is jacked to a position to be observed and is fixed by the temperature monitoring fixing device and a second fixing and adjusting device arranged on the temperature monitoring fixing device;
fifthly, closing the top of the isolation box, supplying power to the heating device group for heating, and keeping the heating power when the temperature displayed by the temperature detection device reaches 200 ℃;
sixthly, adjusting the power of the independent heating device in the heating device group, stopping heating when the temperature detection point of the outer wall of the simulation furnace correspondingly heated by the independent heating device reaches 300 ℃, and keeping the heating power;
seventhly, measuring the temperature by a temperature measuring optical fiber detection system, observing the temperature measuring and positioning effect of the adopted temperature measuring optical fiber at 300 ℃,
when the adopted temperature measuring optical fiber cannot effectively measure at 300 ℃, replacing different types of temperature measuring optical fibers, and repeating the steps;
when the adopted temperature measuring optical fiber normally works at 300 ℃ to provide effective measurement, observing the temperature change of the temperature measuring optical fiber fixed on the outer wall of the simulation furnace and calculating the positions corresponding to different temperatures;
eighthly, stopping heating the heating device group, opening the top of the isolation box when the temperature detected by the temperature detection device is recovered to room temperature, marking the positions of the temperature measurement optical fibers corresponding to different temperature test point positions on the outer wall of the simulation furnace, and taking out the temperature measurement optical fibers for further analysis and processing;
and ninthly, adjusting the distance between the temperature measuring optical fiber and the outer wall of the simulation furnace, further repeating the experiment, observing, analyzing and further processing, and exploring the influence of the distance change between the temperature measuring optical fiber and the outer wall of the simulation furnace on temperature measurement and positioning.
The invention has the beneficial effects that:
1. the invention provides a simulation experiment device for simulating the temperature change of the outer wall of a coal gasification furnace, which heats the simulation furnace through a heating device group to simulate the temperature change of the coal gasification furnace in different working states, provides a device capable of probing the real-time monitoring of the temperature change of the outer wall of the coal gasification furnace in a laboratory environment, provides experiment conditions for probing the temperature monitoring of the outer wall of the coal gasification furnace, and is more convenient for scientific researchers to provide convenience for a monitoring method for probing the real-time monitoring of the temperature change of the outer wall of the coal gasification furnace;
2. the heating devices which are mutually independent are arranged in the heating device group, and the matching of the heating device group and the simulation furnace with the equal partition compartments can ensure that the outer wall of the simulation furnace shows different temperature difference changes, thereby creating conditions for simulating the local temperature rise of the coal gasifier on site;
3. the heating device group is used for heating the simulation furnace, so that the normal working surface temperature of the coal gasifier is simulated, and conditions are created for exploring the working efficiency of temperature measuring optical fibers with different temperature resistance coating layers in actual monitoring;
4. according to the invention, through the matching of the temperature monitoring fixing device and the temperature detection device, the real-time temperature measured by the temperature detection device is compared with the temperature measured by the temperature measurement optical fiber in real time, so that a reference basis is provided for the accuracy of the measurement result of the temperature measurement optical fiber;
5. through the first fixing device arranged on the outer wall of the simulation furnace, conditions are created for researching the effect of the temperature measurement optical fiber influenced by the position of the distance monitoring point;
6. through setting up the shielded cell, not only prevent thermal scattering and disappearing in the experiment to a certain extent, the injury that the experimenter that probably gave of local equipment intensification became invalid in can also reducing the experiment brought to and reduce the influence that high temperature experiment caused the surrounding environment.
Drawings
FIG. 1 is a schematic system diagram of a simulation experiment device for monitoring the temperature change of the outer wall of a coal gasifier according to the present invention;
FIG. 2 is a schematic diagram showing the structure of a simulated furnace in a simulated experimental apparatus for monitoring the temperature change of the outer wall of a coal gasifier according to the present invention;
FIG. 3 is a schematic structural diagram of a support table in a simulation experiment device for monitoring temperature changes of the outer wall of a coal gasifier according to the present invention;
FIG. 4 is a schematic structural diagram of a temperature monitoring fixing device in a simulation experiment device for monitoring the temperature change of the outer wall of a coal gasifier according to the present invention;
FIG. 5 is a schematic structural diagram of a first fixing and adjusting device in a simulation experiment device for monitoring temperature change of the outer wall of a coal gasifier according to the present invention;
FIG. 6 is a schematic structural diagram of a second fixing and adjusting device in a simulation experiment device for monitoring the temperature change of the outer wall of a coal gasifier.
1. Simulated furnace (compartment); 2. a heating device group; 3. a first fixed adjustment device; 4. a temperature monitoring fixture; 5. a temperature detection device; 6. an observation window; 7. an isolation box; 8. a support table; 9. a wire arranging hole; 10. supporting legs; 11. a conduit; 12. a third hole; 13. a heating controller group; 14. a power supply connection device; 31. a first fixed seat; 32. a first bar-shaped opening; 33. a semi-open shaped gap; 34. a first adjusting nut; 41. a base; 42. erecting a rod; 43. a second fixed adjustment device; 431. a third adjusting nut; 432. a fifth hole; 433. a fourth hole; 434. a second adjusting nut; 435. a second fixed seat.
Detailed Description
The following further explains embodiments of the present invention with reference to FIGS. 1 to 6
The first embodiment is as follows:
the temperature measurement device comprises a simulation furnace 1, wherein first fixing and adjusting devices 3 for fixing temperature measurement optical fibers are annularly arranged on the outer part of the simulation furnace 1 at equal intervals around the circumference, a heating device group 2 is arranged in the simulation furnace 1, and the simulation furnace 1 and the heating device group 2 are both arranged at corresponding positions on a table top of a support table 8;
the supporting platform 8 is in a shape of a round cake, a round groove 84 which is as large as the bottom of the simulation furnace 1 is arranged in the center of the top surface of the supporting platform 8, the groove 84 is used for placing the simulation furnace 1, a hollow column hole 83 for placing the heating device group 2 is arranged in the groove 84, and a first hole 81 for allowing a power supply line to enter is correspondingly arranged at the lower part of the hollow column hole 83;
a concave rail 85 is arranged at the edge of the supporting table 8, a temperature monitoring fixing device 4 is arranged in the concave rail 85, and a temperature detection device 5 which is tightly attached to the outer wall of the simulation furnace 1 through the temperature monitoring fixing device 4 and is used for monitoring the temperature of the simulation furnace 1 is fixed;
a conduit 11 which is connected with a power supply line and heats the heating device group 2 is arranged at the bottom of the groove 84 of the support platform 8, and a second hole 82 is arranged at the bottom of the conduit 11;
a three-dimensional protective isolation box 7 is arranged outside the support platform 8 and the simulation furnace 1, at least one side of the isolation box 7 is provided with an observation window 6, the bottom of the isolation box 7 is provided with a wire arranging hole 9, four corners of the bottom of the isolation box 7 are provided with supporting legs 10, and the center of the bottom surface of the isolation box is provided with a third hole 12 corresponding to the second hole 82;
the heating device group 2 is connected to a heating controller group 13 provided outside the isolation box 7 through the line pipe 11 by a power supply line, and the heating controller group 13 is connected to a power supply connection device 14.
Further, the simulation furnace 1 is formed by adopting a one-step forming mode of high-temperature-resistant boron nitride materials, the inner diameter of the simulation furnace 1 is set to be 1 meter, the height of the simulation furnace 1 is 0.8 meter, and the inside of the simulation furnace 1 is divided into four equal spaces.
Furthermore, at least two groups of heating devices in the heating device group 2 are mutually independent and adjustable, the heating devices in the heating device group adopt the existing thermocouple matched heating control equipment on the market, the thermocouple can adopt a platinum rhodium-platinum rhodium thermocouple or an oxidation resistant tungsten rhenium thermocouple and the like, and an infrared heating pipe and matched heating control equipment thereof can also be adopted.
Furthermore, the first fixed adjusting devices 3 are at least three in each week when the simulated furnace 1 is equidistantly arranged in one week, and at least two weeks are arranged on the outer wall of the simulated furnace 1;
the first fixing and adjusting device 3 comprises a first fixing seat 31 fixed with the furnace wall of the simulation furnace 1 in a punching and inserting mode, the first fixing seat 31 is solid at the bottom, a first strip-shaped opening 32 is formed in the middle upper part, the first fixing and adjusting device 3 further comprises a first adjusting nut 34, a half-opening-shaped notch 33 is formed in the bottom of the first adjusting nut 34, and the first adjusting nut 34 is matched with the first fixing seat 31 in a screw hole screwing mode;
the first fixing and adjusting device 3 is formed by a mold from a boron nitride material which is the same as the material of the simulation furnace 1, the inner diameter of the first fixing seat 31 is 1 cm, the length of the first fixing seat is 3 cm, and the first strip-shaped opening 32, the first adjusting nut 34, the screw hole and the like can be flexibly grasped and are not repeated.
Furthermore, the supporting platform (8) is made of ceramic materials with poor heat conductivity through one-step molding;
the inner diameter of the supporting platform 8 is at least 1.5 m, the thickness is 0.1 m, and the first hole 81, the second hole 82, the hollow column hole 83, the groove 84, the concave rail 85 and the like arranged in the supporting platform 8 can be flexibly mastered by a person in the technical field, wherein the inner diameter of the second hole 82 is not less than 5 cm in order to facilitate the matching heat supply of the power supply line and the heating device group 2.
Further, the temperature monitoring fixing device 4 includes a base 41 matched with the concave rail 85, a square upright 42, and a second fixing and adjusting device 43 disposed at the upright 42;
the second fixing and adjusting device 43 comprises a second fixing seat 435, the second fixing seat 435 is respectively provided with a fourth hole 433 for fixing the upright rod 42 and a fifth hole 432 for fixing the temperature detecting device 5, and the opening directions of the fourth hole 433 and the fifth hole 432 are perpendicular to each other;
the fourth hole 433 is provided with a second adjusting nut 434 which is adjusted in a matched manner through a screw hole screwing manner, and the fifth hole 432 is provided with a third adjusting nut 431 which is adjusted in a matched manner through a screw hole screwing manner;
the base 41 and the square upright rod 42 are made of stainless steel, the second fixing and adjusting device 43 is made of temperature-resistant materials such as boron nitride and the like through mold forming or 3D printing and other modes for one-step forming, and the specific size is designed according to the width of the concave rail 85.
Further, the temperature detection device 5 adopts a temperature measuring rod based on a thermocouple type.
Furthermore, the isolation box 7 is made of stainless steel materials and is 2 meters long, 2 meters wide, 1.2 meters high, 0.5 cm thick, the top of the isolation box 7 is detachable, and the observation window 6 matched with the isolation box 7 is made of high-temperature-resistant and pressure-resistant transparent glass materials.
The experimental device is used as follows:
firstly, opening the top of the isolation box 7, and correspondingly placing the simulation furnace 1, the heating device group 2, the support table 8 and the temperature monitoring fixing device 4 in the isolation box 7, and simultaneously aligning the second hole 82 with the third hole 12;
secondly, the power supply line is respectively connected with the heating device group 2 through a pipeline 11 and correspondingly connected with a heating controller group 13 and a power supply connecting device 14 which are arranged outside the isolation box 7;
thirdly, guiding the temperature measuring optical fiber into the isolation box 7 through a wire arranging hole 9 formed in the isolation box 7, winding and fixing the temperature measuring optical fiber on the outer wall of the simulation furnace 1 in an annular manner through the first fixing and adjusting device 3, and further guiding out the redundant temperature measuring optical fiber from the wire arranging hole 9;
fourthly, the temperature measuring end of the temperature detecting device 5 is jacked to a position to be observed and is fixed by the temperature monitoring fixing device 4 and a second fixing and adjusting device 43 arranged on the temperature monitoring fixing device 4;
fifthly, closing the top of the isolation box 7, supplying power to the heating device group 2 for heating, and keeping the heating power when the temperature displayed by the temperature detection device 5 reaches 200 ℃;
sixthly, adjusting the power of the independent heating device in the heating device group 2, stopping heating when the temperature detection point of the outer wall of the simulated furnace 1 correspondingly heated by the independent heating device reaches 300 ℃, and keeping the heating power;
seventhly, measuring the temperature by a temperature measuring optical fiber detection system, observing the temperature measuring and positioning effect of the adopted temperature measuring optical fiber at 300 ℃,
when the adopted temperature measuring optical fiber cannot effectively measure at 300 ℃, replacing different types of temperature measuring optical fibers, and repeating the steps;
when the adopted temperature measuring optical fiber normally works at 300 ℃ to provide effective measurement, observing the temperature change of the temperature measuring optical fiber fixed on the outer wall of the simulation furnace 1 and calculating the positions corresponding to different temperatures;
eighthly, stopping heating the heating device group 2, opening the top of the isolation box 7 when the temperature detected by the temperature detection device 5 is recovered to the room temperature, marking the positions of the temperature measurement optical fibers corresponding to the different temperature test point positions on the outer wall of the simulation furnace 1, and taking out the temperature measurement optical fibers for further analysis and treatment;
and ninthly, adjusting the distance between the temperature measuring optical fiber and the outer wall of the simulation furnace 1, further repeating the experiment, observing, analyzing and further processing, and exploring the influence of the distance change between the temperature measuring optical fiber and the outer wall of the simulation furnace 1 on temperature measurement and positioning.
It should be noted that, in this embodiment, the simulation furnace 1 is made of a high-temperature boron nitride material instead of a metal material, because boron nitride has good thermal conductivity, the thermal conductivity of boron nitride is equivalent to that of stainless steel, and the boron nitride has the advantages of heat resistance up to 2000 ℃ or higher, and is also a good insulating material and a good heat dissipation material, which facilitates rapid temperature rise of the outer wall of the simulation furnace 1, and if an infrared heating tube is used for heating, the simulation furnace 1 can also be made of a stainless steel material; the power supply line should have a temperature resistant coating; the power supply connecting device 14 can be powered by a plug and a power supply board, a heat insulation film can be properly arranged between the isolation equal intervals according to the heating efficiency on the inner wall of the analog circuit 1, and other design parameters which can be flexibly mastered by a person skilled in the art are not repeated one by one again.
The working principle of the invention is as follows:
the heating device group 2 arranged by the invention is used for heating the simulated furnace 1, so as to simulate the temperature change of the outer wall of the coal gasifier in different working states, along with the development of an optical fiber technology, the distributed Raman optical fiber temperature measurement technology utilizes a Raman scattering principle and an optical time domain reflection technology, the temperature of a detection point can be accurately positioned according to the change of the intensity of anti-Stokes light influenced by the temperature, and the application of the existing temperature measurement optical fiber is mainly limited by the performance influence of a temperature measurement optical fiber coating layer, so the invention provides an experimental device for simulating the temperature change of the outer wall of the coal gasifier so as to explore a more suitable temperature measurement optical fiber and an on-site application method of the temperature measurement optical fiber corresponding to the temperature-resistant condition in the coal gasifier, and the distributed optical fiber temperature measurement positioning system is partially applied to the industrial production site, so the distributed optical fiber temperature measurement positioning system is not described in detail in the invention, the temperature measuring optical fiber is the temperature measuring optical fiber matched with the distributed temperature measuring positioning system.
The foregoing is merely an example of the present invention and common general knowledge in the art of designing specific methods or features, etc., is not set forth herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (8)
1. The utility model provides a simulation experiment device to coal gasifier outer wall temperature variation control which characterized in that:
the temperature measurement device comprises a simulation furnace (1), wherein first fixing and adjusting devices (3) for fixing temperature measurement optical fibers are annularly arranged on the outer part of the simulation furnace (1) at equal intervals around the periphery, a heating device group (2) is arranged in the simulation furnace (1), and the simulation furnace (1) and the heating device group (2) are arranged at corresponding positions of a table top of a support table (8);
the supporting platform (8) is in a round cake shape, a round groove (84) which is as large as the bottom of the simulation furnace (1) is formed in the center of the table top of the supporting platform (8), the groove (84) is used for placing the simulation furnace (1), a hollow column hole (83) for placing the heating device group (2) is formed in the groove (84), and a first hole (81) for allowing a power supply line to enter is correspondingly formed in the lower portion of the hollow column hole (83);
a concave rail (85) is arranged at the edge of the supporting table (8), a temperature monitoring fixing device (4) is arranged in the concave rail (85), and a temperature detection device (5) which is tightly attached to the outer wall of the simulation furnace (1) and is used for monitoring the temperature of the simulation furnace (1) is fixed through the temperature monitoring fixing device (4);
a wire pipe (11) which is connected with a power supply line in a matching way and heats the heating device group (2) is arranged at the support table (8) and at the bottom of the groove (84), and a second hole (82) is arranged at the bottom of the wire pipe (11);
a three-dimensional protection isolation box (7) is arranged outside the support table (8) and the simulation furnace (1), at least one side of the isolation box (7) is provided with an observation window (6), the bottom of the isolation box (7) is provided with a wire arrangement hole (9), four corners of the bottom of the isolation box (7) are provided with supporting legs (10), and the center of the bottom surface of the isolation box is provided with a third hole (12) corresponding to the second hole (82);
the heating device group (2) is connected with a heating controller group (13) arranged outside the isolation box (7) through a power supply line and the line pipe (11), and the heating controller group (13) is connected with a power supply connecting device (14).
2. The simulation experiment device for monitoring the temperature change of the outer wall of the coal gasifier according to claim 1, wherein:
the simulation furnace (1) is formed by adopting a one-step forming mode of high-temperature-resistant boron nitride materials, the inner diameter of the simulation furnace (1) is not less than 1 meter, and the inside of the simulation furnace is divided into four equal spaces.
3. The simulation experiment device for monitoring the temperature change of the outer wall of the coal gasifier according to claim 1, wherein:
at least two groups of heating devices in the heating device group (2) are mutually independent and adjustable.
4. The simulation experiment device for monitoring the temperature change of the outer wall of the coal gasifier according to claim 1, wherein:
the number of the first fixed adjusting devices (3) is at least 3 per week when the simulated furnace (1) is arranged around a week at equal intervals, and the number of the first fixed adjusting devices is at least 2 weeks when the simulated furnace (1) is arranged on the outer wall;
the first fixing and adjusting device (3) comprises a first fixing seat (31) fixed with the furnace wall of the simulation furnace (1) in a punching and inserting mode, the first fixing seat (31) is solid in the bottom, a first strip-shaped opening (32) is formed in the middle upper portion of the first fixing and adjusting device, the first fixing and adjusting device (3) further comprises a first adjusting nut (34), a half-opening-shaped notch (33) is formed in the bottom of the first adjusting nut (34), and the first adjusting nut (34) is matched with the first fixing seat (34) in a screw hole screwing mode.
5. The simulation experiment device for monitoring the temperature change of the outer wall of the coal gasifier according to claim 1, wherein:
the supporting table (8) is made of ceramic materials with poor heat conductivity through one-step molding.
6. The simulation experiment device for monitoring the temperature change of the outer wall of the coal gasifier according to claim 1, wherein:
the temperature monitoring fixing device (4) comprises a base (41) matched with the concave rail (85), a square upright rod (42) and a second fixing and adjusting device (43) arranged at the upright rod (42);
the second fixing and adjusting device (43) comprises a second fixing seat (435), a fourth hole (433) for fixing the upright rod (42) and a fifth hole (432) for fixing the temperature detection device (5) are respectively formed in the second fixing seat (435), and the opening directions of the fourth hole (433) and the fifth hole (432) are perpendicular to each other;
the fourth hole (433) is provided with a second adjusting nut (434) which is adjusted in a matched mode through screw hole screwing, and the fifth hole (432) is provided with a third adjusting nut (431) which is adjusted in a matched mode through screw hole screwing.
7. The simulation experiment device for monitoring the temperature change of the outer wall of the coal gasifier according to claim 1, wherein:
the temperature detection device (5) adopts a temperature measuring rod based on a thermocouple type.
8. The simulation experiment device for monitoring the temperature change of the outer wall of the coal gasifier according to claim 1, wherein:
the isolation box (7) is made of stainless steel materials, the top of the isolation box is detachable, and the observation window (6) matched with the isolation box (7) is made of high-temperature-resistant compression-resistant transparent glass materials.
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