CN104374478B - The temperature discriminating method and measuring device of cracking furnace tube outer wall and inboard wall of burner hearth - Google Patents
The temperature discriminating method and measuring device of cracking furnace tube outer wall and inboard wall of burner hearth Download PDFInfo
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- CN104374478B CN104374478B CN201410666748.5A CN201410666748A CN104374478B CN 104374478 B CN104374478 B CN 104374478B CN 201410666748 A CN201410666748 A CN 201410666748A CN 104374478 B CN104374478 B CN 104374478B
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Abstract
The present invention provides a kind of the temperature discriminating method and measuring device of cracking furnace tube outer wall and inboard wall of burner hearth, when temperature-measuring module measures cracking furnace tube outside wall temperature, it is furnace tube outer wall temperature or inboard wall of burner hearth temperature from measured temperature is screened out by the distance of the practical measured object of distance-measurement module synchro measure, and according to institute's ranging.The present invention can under the severe production environment of pyrolysis furnace the practical measured object of synchro measure temperature and distance, utilize the different distance feature of measured object, effectively, furnace tube outer wall temperature and inboard wall of burner hearth temperature are quickly screened out, it realizes that apparatus structure is simple, it is easily achieved, manufacturing cost is low.
Description
Technical field
The present invention relates to petrochemical industries, and in particular to a kind of temperature examination of cracking furnace tube outer wall and inboard wall of burner hearth
Method and measuring device.
Background technology
Ethylene industry is the important matrix of petroleum chemical industry, and cracking process is one of key technology of ethylene industry.At present
99% or more ethylene production of China use tube furnace steam pyrolysis technology, pyrolysis furnace operation conditions directly affect yield of ethene and
Quality.In pyrolysis furnace, boiler tube is critical component therein, plays a part of to heat raw material and reactor.Due to cracking furnace tube
It is run under the complex environment of high temperature for a long time, surface oxidation, coking and height caused by burn into local overheating etc. easily occurs
Phase transformation caused by temperature, mechanical performance decline, the failure for causing boiler tube carburizing occur, crack, wash away the forms such as thinned, bending.It can
It is most of all to have direct relation with temperature in the diversified forms of cracking furnace pipe failure to say.Temperature is cracking furnace pipe failure
Major influence factors, therefore, one of operation most important to pyrolysis furnace are the disabled status for monitoring boiler tube, the means monitoring taken
Radiant section gas outlet temperature in boiler tube（Abbreviation COT）With furnace tube outer wall temperature, furnace tube outer wall temperature is compared with COT.
Meanwhile in order to ensure cracking furnace tube safe operation, and processing foundation is provided when boiler tube repairs, it is necessary to furnace tube outer wall temperature
It measures, store, statistics and analysis, so that the operation conditions to boiler tube makes accurate judgement.
It realizes that the cracking furnace pipe outside wall temperature of real-time high-precision measures, can theoretically be analyzed with thermal infrared imager,
But thermal infrared imager is expensive, needs the image analysis processing software of mating complexity, and reliability is low, inconvenient for operation, therefore
Greatly limit its popularization and application.Though the country has a small number of petroleum chemical enterprises to use, never really for the outer wall temperature of cracking furnace pipe
The real time monitoring of degree.
Currently, public measurement cracking furnace pipe outside wall temperature method is by the non-contacting infrared measurement of temperature of man-hour manually hand-held
Instrument position by pipe, by pipe thermometric through pyrolysis furnace flame-observing hole.This man-hour manually hand-held temp measuring method has following drawback：
1, flame-observing hole is small, and the boiler tube that can be clearly observable, burner hearth range are very limited；
2, fire box temperature is high, pyrotechnics is big, thermometric bad environments, to operating personnel's serious interference, observes random strong；
3, boiler tube, which arranges, has no rule, close when being dredged when between pipe, and boiler tube has small shaking, boiler tube positioning in process of production
It is difficult；
4, the frequency and accuracy of thermometric are low, help less extending coil runlength and control tube coking.
The drawbacks of in order to overcome existing man-hour manually hand-held boiler tube temp measuring method, needs to study a kind of automatic TME.But
It is that the data of automatic TME acquisition not only have the temperature of furnace tube outer wall, the also temperature of inboard wall of burner hearth, and due to two kinds
Relatively, especially when boiler tube inner wall coking is serious, two kinds of temperature difference very littles identify extremely difficult temperature.Therefore, automatic to survey
Warm device must have screen practical institute's thermometric object be furnace tube outer wall or inboard wall of burner hearth ability.
Invention content
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of cracking furnace tube outer wall and inboard wall of burner hearth
Temperature discriminating method.
Another object of the present invention is to overcome the deficiencies of the prior art and provide a kind of cracking furnace tube outer wall in burner hearth
The temperature measuring equipment of wall.
In order to realize that first goal of the invention, the technical solution of use are as follows：
A kind of temperature discriminating method of cracking furnace tube outer wall and inboard wall of burner hearth, temperature-measuring module measure cracking furnace tube
When outside wall temperature, by the distance of distance-measurement module synchro measure measurand, according to institute's ranging from screening out measured temperature
For furnace tube outer wall temperature or inboard wall of burner hearth temperature.
The present invention simultaneously synchronizes same target by using temperature-measuring module and distance-measurement module and measures it
Temperature and distance, so that it may from corresponding temperature is screened out to be furnace tube outer wall temperature or inboard wall of burner hearth temperature according to institute's ranging
Degree.
Further, temperature-measuring module and distance-measurement module are focused before measuring, to ensure that temperature measures mould
Block and distance-measurement module are synchro measure same targets.
Temperature-measuring module and distance-measurement module are focused before measuring, even if the measurement focus of the two is completely heavy
Close, it is ensured that the two measure be same target, it is ensured that measurement it is accurate.
Further, temperature-measuring module synchronous with distance-measurement module surveyed temperature and distance is sent to CPU, by
CPU is screened according to distance into trip temperature automatically.
Calculating examination can be quickly carried out by CPU, is particularly suitable for production and needs.
In order to realize that second goal of the invention, the technical solution of use are as follows：
A kind of temperature measuring equipment of cracking furnace tube outer wall and inboard wall of burner hearth, including temperature-measuring module and range measurement
Module, the temperature-measuring module and distance-measurement module are arranged in same shell.
The temperature of measurand is measured using temperature-measuring module, while measuring measurand using distance-measurement module
Distance, and it is furnace tube outer wall temperature or inboard wall of burner hearth temperature to distinguish measured temperature according to the distance surveyed using CPU；By temperature
Measurement module and distance-measurement module are integrated on shell, also so that present apparatus conveniently moving, simpler in shape
It is single beautiful, while being easier to aim at the same measurement object, improve measurement accuracy.High temperature complex environment at pyrolysis furnace scene
In, shell can also play a protective role to temperature-measuring module and distance-measurement module.
Further, the temperature-measuring module is mounted on by holder and fixed block above shell, the range measurement
Module is screwed in below shell.
Further, the temperature-measuring module is infrared temperature probe, and the distance-measurement module is laser ranging
Sensor, the infrared optical focus of the infrared temperature probe and the laser spot of laser range sensor are focused.
The temperature-measuring module of the present invention uses infrared temperature probe, and infrared temperature probe is a kind of contactless
Temperature sensor, its manufacturing process is simple, at low cost, and when thermometric is not required to contact testee, has that temperature resolution is high, rings
Answer that speed is fast, does not disturb measured target Temperature Distribution field, the advantages that high certainty of measurement and stability are good.And distance-measurement module is adopted
With laser range sensor, laser range sensor can detect extremely faint optical signal, as long as recording and handling from light pulse
It is issued to return and is received the undergone time, you can measure target range.By the infrared light of infrared temperature probe before measuring
Focus and the laser spot of laser range sensor are focused, to ensure that infrared temperature probe and laser range sensor are surveyed
Amount is same target, it is ensured that measurement accuracy.
Further, the focusing includes vertical focusing and horizontal focusing；The vertical focusing is that fixed laser ranging passes
The laser spot of sensor utilizes the ellipse screw of infrared temperature probe holder, the water on adjustment infrared temperature probe head
Prosposition is set, its infrared optical focus and the laser spot of laser range sensor is made to be in same vertical line；The horizontal focusing
It is the laser spot of fixed laser distance measuring sensor, the infrared temperature probe at rotation infrared temperature probe rear adjusts spiral shell
Mother, the upright position on adjustment infrared temperature probe head, makes the laser spot of its infrared optical focus and laser range sensor
It is overlapped in same position.
The focusing method of the present invention is simple and clear, easy to operate.
Beneficial effects of the present invention：It can be under the severe production environment of pyrolysis furnace in synchro measure furnace tube outer wall and burner hearth
The temperature and distance of wall effectively, quickly screen out furnace tube outer wall temperature and inboard wall of burner hearth temperature, realize apparatus structure letter
It is single, it is easy to accomplish, manufacturing cost is low.
Description of the drawings
Fig. 1 is the instrumentation plan of the embodiment of the present invention；
Fig. 2 is the temperature measuring equipment forward sight structure of a kind of the cracking furnace tube outer wall and inboard wall of burner hearth of the embodiment of the present invention
Schematic diagram；
Fig. 3 is the temperature measuring equipment backsight structure of a kind of the cracking furnace tube outer wall and inboard wall of burner hearth of the embodiment of the present invention
Schematic diagram；
Fig. 4 is the pyrolysis furnace field layout schematic diagram of the embodiment of the present invention.
Specific implementation mode
The present invention is described in further detail with reference to the accompanying drawings and examples.
Embodiment：
As shown in Figure 1, the temperature discriminating method of a kind of cracking furnace tube outer wall and inboard wall of burner hearth, temperature-measuring module 3 is surveyed
When measuring the outside wall temperature of cracking furnace tube 1, by the distance of 4 synchro measure measurand of distance-measurement module, according to institute's ranging
From the inner wall temperature for screening out temperature or burner hearth 5 that measured temperature is 1 outer wall of boiler tube.
Further, temperature-measuring module 3 and distance-measurement module 4 are focused before measuring, to ensure that temperature measures
Module 3 and distance-measurement module 4 are synchro measure same targets.
Further, temperature-measuring module 3 synchronous with distance-measurement module 4 surveyed temperature and distance is sent to CPU, by
CPU is screened according to distance into trip temperature automatically.
Further, temperature-measuring module 3 and distance-measurement module 4 are same by the flame-observing hole 2 of pyrolysis furnace in the present embodiment
The temperature and distance of the practical measured object of step acquisition.
Its realization device is as follows：
As shown in Figures 2 and 3, a kind of temperature measuring equipment of cracking furnace tube outer wall and inboard wall of burner hearth, including temperature are surveyed
Module and distance-measurement module are measured, the temperature-measuring module and distance-measurement module are arranged in same shell 8.
Further, the temperature-measuring module is mounted on 8 top of shell, the distance by holder 9 and fixed block 10
Measurement module is fixed on 8 lower section of shell by screw 15,16 and 17.
Further, the temperature-measuring module is infrared temperature probe 6, and the distance-measurement module is laser ranging
The laser spot needs of sensor 7, the infrared optical focus of the infrared temperature probe 6 and laser range sensor 7 carry out pair
It is burnt.
Further, the focusing includes vertical focusing and horizontal focusing；The vertical focusing is that fixed laser ranging passes
The laser spot of sensor 7 adjusts the horizontal position on infrared temperature probe head using the ellipse screw 12 and 13 of holder 9,
Its infrared optical focus and the laser spot of laser range sensor 7 is set to be in same vertical line；The horizontal focusing is fixed
The laser spot of laser range sensor 7, the infrared temperature probe adjusting nut 11 at 6 rear of rotation infrared temperature probe,
The upright position for adjusting 6 head of infrared temperature probe, makes the laser spot weight of its infrared optical focus and laser range sensor
It is laminated on same position.
CPU is identified not in the drawings in the present embodiment, and those skilled in the art are known that CPU is for analyzing, handling
The data that temperature-measuring module and distance-measurement module measure.The application method of the present apparatus：
Focusing：The position of fixed laser distance measuring sensor 7 adjusts infrared measurement of temperature sensing by the ellipse screw of holder 9
The horizontal position on 6 head of device makes the infrared optical focus of infrared temperature probe 6 and the laser spot position of laser range sensor 7
In on same plumb line；It reuses vertical focusing mechanism 11 i.e. adjusting nut and adjusts the vertical of 6 head of infrared laser sensor
Position so that infrared optical focus and the laser spot of laser range sensor 7 are completely superposed.
As shown in figure 4, pyrolysis furnace along furnace wall surrounding open 20 2,4 groups of flame-observing holes totally 48 boiler tubes 1 in pyrolysis furnace from west
In one line eastwards, boiler tube 1 is spaced uneven, but is substantially at same vertical plane, and can directly be seen by flame-observing hole 2
It surveys.2 lower edge of flame-observing hole is in sustained height with 18 horizontal rails of guardrail, and the present apparatus after focusing is placed in the level of guardrail 18
At the midpoint 19 of railing, the present apparatus can start to execute measurement task.Obtained data will be measured and be sent to CPU, CPU according to
The different distance feature of sampled point, the temperature for screening out sampled point are the outside wall temperature of cracking furnace tube 1 or the inner wall of burner hearth 5
Temperature.
Claims (6)
1. the temperature discriminating method of a kind of cracking furnace tube outer wall and inboard wall of burner hearth, which is characterized in that temperature-measuring module measures
When cracking furnace tube outside wall temperature, by the distance of distance-measurement module synchro measure measurand, according to institute's ranging from examination
It is furnace tube outer wall temperature or inboard wall of burner hearth temperature to go out measured temperature, measure it is preceding by temperature-measuring module and distance-measurement module into
Row focusing, to ensure that temperature-measuring module and distance-measurement module are synchro measure same targets.
2. the temperature discriminating method of a kind of cracking furnace tube outer wall and inboard wall of burner hearth according to claim 1, feature exist
In temperature-measuring module synchronous with distance-measurement module surveyed temperature and distance are sent to CPU, are carried out according to distance by CPU
Temperature is screened automatically.
3. a kind of measuring device, which is characterized in that carried out using the temperature discriminating method described in claims 1 or 2 any one
It measures, including temperature-measuring module and distance-measurement module, the temperature-measuring module and distance-measurement module are arranged same
In shell.
4. a kind of measuring device according to claim 3, which is characterized in that the temperature-measuring module is by holder and admittedly
Block is determined above shell, and the distance-measurement module is mounted on by screw below shell.
5. a kind of measuring device according to claim 4, it is characterised in that the temperature-measuring module passes for infrared measurement of temperature
Sensor, the distance-measurement module are laser range sensor, the infrared optical focus and Laser Measuring of the infrared temperature probe
Laser spot away from sensor is focused.
6. a kind of measuring device according to claim 5, it is characterised in that the focusing includes that vertical focusing and level are right
It is burnt；The vertical focusing is the laser spot of fixed laser distance measuring sensor, utilizes the ellipse of infrared temperature probe holder
Screw hole, the horizontal position on adjustment infrared temperature probe head keep the laser of its infrared optical focus and laser range sensor burnt
Point is in same vertical line；The horizontal focusing is the laser spot of fixed laser distance measuring sensor, and rotation infrared measurement of temperature passes
The infrared temperature probe adjusting nut at sensor rear, the upright position on adjustment infrared temperature probe head, makes its infrared light
Focus and the laser spot of laser range sensor are overlapped in same position.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410666748.5A CN104374478B (en) | 2014-11-20 | 2014-11-20 | The temperature discriminating method and measuring device of cracking furnace tube outer wall and inboard wall of burner hearth |
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| CN201410666748.5A CN104374478B (en) | 2014-11-20 | 2014-11-20 | The temperature discriminating method and measuring device of cracking furnace tube outer wall and inboard wall of burner hearth |
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| CN104374478B true CN104374478B (en) | 2018-08-03 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833432B (en) * | 2015-04-23 | 2017-11-10 | 广东石油化工学院 | A kind of cracking furnace tube outer wall detecting temperature instrument two-phase drives synchronous method |
| CN104880255B (en) * | 2015-04-23 | 2017-11-10 | 广东石油化工学院 | A kind of cracking furnace tube outer wall detecting temperature instrument drive device |
| CN107367331A (en) * | 2017-07-26 | 2017-11-21 | 广东石油化工学院 | A kind of continuous measuring device of Ethylene Cracking Furnace Tubes temperature |
| CN108072448B (en) * | 2017-12-13 | 2019-07-16 | 广东石油化工学院 | A kind of data processing method about the metering of cracking furnace tube outside wall temperature |
| CN108106753B (en) * | 2017-12-13 | 2019-07-12 | 广东石油化工学院 | One kind is about cracking furnace tube outer wall detecting temperature initial position and orientation optimization method |
| CN110222814B (en) * | 2019-04-25 | 2022-11-25 | 广东石油化工学院 | Ethylene cracking furnace tube heavy tube identification method based on embedded DCNN |
| CN110343541B (en) * | 2019-06-18 | 2021-08-06 | 广东石油化工学院 | Intelligent coking monitoring boundary cloud cooperative platform for cracking furnace tube and working method thereof |
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| JPH11281331A (en) * | 1998-03-26 | 1999-10-15 | Toyota Central Res & Dev Lab Inc | Device for measuring inner wall |
| CN201607278U (en) * | 2010-02-26 | 2010-10-13 | 张金华 | On-line thermal imaging surface temperature measuring device for furnace tubes |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1175567A (en) * | 1966-09-12 | 1969-12-23 | Centre Nat Rech Metall | A method of Controlling the Operation of a Shaft Furnace |
| JPH11281331A (en) * | 1998-03-26 | 1999-10-15 | Toyota Central Res & Dev Lab Inc | Device for measuring inner wall |
| CN201607278U (en) * | 2010-02-26 | 2010-10-13 | 张金华 | On-line thermal imaging surface temperature measuring device for furnace tubes |
| CN102574179A (en) * | 2010-02-26 | 2012-07-11 | 现代制铁株式会社 | Apparatus and method for measuring the temperature of a material |
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