CN110864809B - Tank monitoring method - Google Patents
Tank monitoring method Download PDFInfo
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- CN110864809B CN110864809B CN201910985391.XA CN201910985391A CN110864809B CN 110864809 B CN110864809 B CN 110864809B CN 201910985391 A CN201910985391 A CN 201910985391A CN 110864809 B CN110864809 B CN 110864809B
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000012544 monitoring process Methods 0.000 title claims abstract description 19
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 238000004458 analytical method Methods 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 150000001875 compounds Chemical class 0.000 claims abstract description 5
- 230000010485 coping Effects 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 238000004904 shortening Methods 0.000 claims description 5
- 238000012217 deletion Methods 0.000 claims description 3
- 230000037430 deletion Effects 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011895 specific detection Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/026—Control of working procedures of a pyrometer, other than calibration; Bandwidth calculation; Gain control
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/48—Thermography; Techniques using wholly visual means
- G01J5/485—Temperature profile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J2005/0077—Imaging
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Radiation Pyrometers (AREA)
Abstract
The invention provides a tank body monitoring method, which comprises the following steps: (A1) the setting step: setting an acquisition period, a high-temperature threshold value and each state threshold value of the thermal imager, wherein the state threshold values correspond to the corresponding measures; (A2) a detection step: acquiring the surface temperature of the tank body according to the acquisition period by the thermal imager to obtain a temperature image; (A3) a pretreatment step: keeping the corresponding temperature in the temperature image at [ Tmin,Tmax]Deleting other pixel points; (A4) and (3) an analysis step: obtaining a state value of the tank body; (A5) a judging step: judging the state threshold value corresponding to the state value, if S belongs to (C)i‑1,Ci]Selection of and CiCorresponding counter measures are taken; (A6) the coping steps are as follows: by reaction of a compound with CiAnd correspondingly taking countermeasures. The invention has the advantages of accurate monitoring, safety, intuition and the like.
Description
Technical Field
The invention relates to temperature measurement, in particular to a method for monitoring the temperature of a tank body.
Background
The hot metal ladle comprises an open ladle and a torpedo ladle, is large-scale hot metal transportation equipment and is used for storing hot metal so as to coordinate the temporary unbalanced state of iron making and steel making. The hot metal ladle has the advantages of small heat loss, long heat preservation time, energy conservation and the like, but serious accidents such as fire hazard, even casualties and the like caused by burning through of the ladle body can be caused by aging or damage of refractory materials and heat insulation materials in the ladle body after the hot metal ladle is used for a period of time. The burn-through of the tank body actually has a changed process, if the tank body is changed in quality, namely a potential fault point is found before the burn-through, and the great loss is reduced for production if the potential fault point is timely repaired.
The existing tank body monitoring method comprises the following steps: according to the experience of workers, after the hot metal tank is used for a certain number of times, the hot metal tank is maintained, a plurality of points are selected for measuring the tank body by a temperature indicator at ordinary times, the measured highest point temperature is recorded, and if abnormal temperature is found, the hot metal tank is maintained. The technology mainly has the following defects:
1. the working experience of workers is needed for judgment, and individual differences exist;
2. when the thermometer is matched, detection leakage often exists, and the actual highest temperature cannot be detected.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the method for monitoring the tank body, which is accurate, visual and safe in monitoring.
The purpose of the invention is realized by the following technical scheme:
a method of monitoring a can body, the method comprising the steps of:
(A1) the setting step: is provided withAcquisition period p and high-temperature threshold value T of thermal imagerthreshAnd each state threshold value CiI is 1,2, 3. cndot. N, the state threshold value corresponds to the countermeasure;
(A2) a detection step: acquiring the surface temperature of the tank body according to the acquisition period by the thermal imager to obtain a temperature image;
(A3) a pretreatment step: keeping the corresponding temperature in the temperature image at [ Tmin,Tmax]Deleting other pixel points;
(A4) and (3) an analysis step: obtaining the state value of the tank body
Δt＝Ti-Ti-p；TiFor the current temperature value, T, of each pixel pointi-pThe temperature value before the time p of each pixel point is i ═ 1,2,3 · · N;
(A5) a judging step: judging the state threshold value corresponding to the state value, if S belongs to (C)i-1,Ci]Selection of and CiCorresponding counter measures are taken;
(A6) the coping steps are as follows: by reaction of a compound with CiAnd correspondingly taking countermeasures.
Compared with the prior art, the invention has the beneficial effects that:
measuring the global temperature distribution of the tank body in real time: the temperature field distribution of the whole tank body is displayed in an intuitive image form, the temperature field distribution can be uploaded to a server for storage, the current state of the tank body is analyzed, the state trend of the tank body is analyzed after a large amount of data is obtained, visual data support is provided for maintenance of the tank body, full life cycle management of the tank body is achieved, management efficiency is improved, and overall accidents caused by under-maintenance or losses caused by over-maintenance are avoided.
Drawings
The disclosure of the present invention will become more readily understood with reference to the accompanying drawings. As is readily understood by those skilled in the art: these drawings are only for illustrating the technical solutions of the present invention and are not intended to limit the scope of the present invention. In the figure:
fig. 1 is a flowchart of a tank monitoring method according to embodiment 1 of the present invention.
Detailed Description
Fig. 1 and the following description depict alternative embodiments of the invention to teach those skilled in the art how to make and reproduce the invention. Some conventional aspects have been simplified or omitted for the purpose of teaching the present invention. Those skilled in the art will appreciate that variations or substitutions from these embodiments will be within the scope of the invention. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the invention. Thus, the present invention is not limited to the following alternative embodiments, but is only limited by the claims and their equivalents.
Example 1:
fig. 1 schematically shows a flow chart of a tank monitoring method according to an embodiment of the present invention, and as shown in fig. 1, the tank monitoring method includes the following steps:
(A1) the setting step: setting an acquisition period p and a high-temperature threshold value T of the thermal imagerthreshAnd each state threshold value CiI is 1,2, 3. cndot. N, and the state threshold value corresponds to the corresponding measures, wherein the corresponding measures comprise shortening the acquisition period, replacing the tank body and the like;
(A2) a detection step: acquiring the surface temperature of the tank body according to the acquisition period by the thermal imager to obtain a temperature image; the structure and the working mode of the thermal imager are the prior art in the field, and the specific detection mode is not described herein again;
(A3) a pretreatment step: keeping the corresponding temperature in the temperature image at [ Tmin,Tmax]Pixel point of (2), Tmin,TmaxDeleting other pixel points for the temperature threshold value; safe low-temperature area data (the temperature of the area is low, no danger is generated) does not need to be considered, and the calculation amount of the data is effectively reduced;
(A4) and (3) an analysis step: obtaining the state value of the tank body according to the result after pretreatment
Δt＝Ti-Ti-p；TiFor the current temperature value, T, of each pixel pointi-pThe temperature value before the time p of each pixel point is i ═ 1,2,3 · · N;
(A5) a judging step: judging the state threshold value corresponding to the state value, if S is the same as (C)i-1,Ci]Selection of and CiCorresponding counter measures are taken;
(A6) the coping steps are as follows: by reaction of a compound with CiAnd correspondingly taking countermeasures.
In order to eliminate partial data abnormity (in normal detection, the temperature of only one pixel point is not in Tmin,Tmax]Should be a plurality of points), further, in the step (a3), if the temperature is at [ T [, ]min,Tmax]The number D of adjacent pixel points of the pixel points is not less than the threshold value D0With a retention temperature of [ Tmin,Tmax]If the number D of the pixel points is less than the threshold value D0The deletion temperature is at [ Tmin,Tmax]The pixel point of (2).
Example 2:
the monitoring method of the tank body according to the embodiment of the invention is applied to monitoring the hot-metal ladle.
In the application example, the tank body is a hot metal tank (comprising an open tank and a torpedo tank), and the countermeasure comprises shortening the acquisition period, replacing the tank body, prompting and alarming and the like; the threshold values are artificially determined according to the field working conditions and can be adjusted according to the specific application of the method.
The monitoring method of the hot metal ladle comprises the following steps:
(A1) the setting step: setting the acquisition period p (such as 5 seconds) and the high-temperature threshold value T of the thermal infrared imagerthresh(e.g., 1000K) and respective state threshold values CiI is 1,2, 3. cndot. N, the state threshold value corresponds to the corresponding measures, and the corresponding measures comprise shortening the acquisition period, replacing the tank body, prompting and alarming and the like;
(A2) a detection step: acquiring the temperature of the outer surface of the tank body according to the acquisition period by using a thermal infrared imager to obtain a temperature image, and displaying the temperature image on a display; the structure and the working mode of the thermal imager are the prior art in the field, and the specific detection mode is not described herein again;
(A3) a pretreatment step: keeping the corresponding temperature in the temperature image at [ Tmin,Tmax]Pixel point of (2), Tmin,TmaxIs a temperature threshold, e.g. [700K,900K ]]Deleting other pixel points; safe low-temperature area data (the temperature of the area is low, no danger is generated) does not need to be considered, and the calculation amount of the data is effectively reduced;
if the temperature is at [ T ]min,Tmax]The number D of adjacent pixel points of the pixel points is not less than the threshold value D0(e.g., 50) at a retention temperature of [ Tmin,Tmax]If the number D of the pixel points is less than the threshold value D0The deletion temperature is at [ Tmin,Tmax]The data computation amount is further reduced by the pixel points;
(A4) and (3) an analysis step: obtaining the state value of the tank body according to the result after pretreatment
Δt＝Ti-Ti-p；TiFor the current temperature value, T, of each pixel pointi-pThe temperature value before the time p of each pixel point is i ═ 1,2,3 · · N;
(A5) a judging step: judging the state threshold value corresponding to the state value, if S is the same as (C)i-1,Ci]Selection of and CiCorresponding counter measures are taken;
(A6) the coping steps are as follows: by reaction of a compound with CiAnd corresponding countermeasures such as prompting and alarming and shortening the acquisition period.
Claims (4)
1. A method of monitoring a can body, the method comprising the steps of:
(A1) the setting step: setting an acquisition period p and a high-temperature threshold value T of the thermal imagerthreshAnd each state threshold value CiI is 1,2, 3. cndot. N, the state threshold value corresponds to the countermeasure;
(A2) a detection step: acquiring the surface temperature of the tank body according to the acquisition period by the thermal imager to obtain a temperature image;
(A3) a pretreatment step: keeping the corresponding temperature in the temperature image at [ Tmin,Tmax]Deleting other pixel points;
(A4) and (3) an analysis step: obtaining the state value of the tank body
Δt＝Ti-Ti-p；TiFor the current temperature value, T, of each pixel pointi-pThe temperature value before the time p of each pixel point is i ═ 1,2,3 · · N;
(A5) a judging step: judging the state threshold value corresponding to the state value, if S belongs to (C)i-1,Ci]Selection of and CiCorresponding counter measures are taken;
(A6) the coping steps are as follows: by reaction of a compound with CiAnd correspondingly taking countermeasures.
2. The method of monitoring a can body of claim 1, wherein: in step (A3), if the temperature is [ T ]min,Tmax]The number D of adjacent pixel points of the pixel points is not less than the threshold value D0With a retention temperature of [ Tmin,Tmax]If the number D of the pixel points is less than the threshold value D0The deletion temperature is at [ Tmin,Tmax]The pixel point of (2).
3. The method of monitoring a can body of claim 1, wherein: the tank body is a hot metal tank.
4. The method of monitoring a can body of claim 1, wherein: the counter measures comprise shortening the acquisition period and replacing the tank body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019105716006 | 2019-06-28 | ||
| CN201910571600 | 2019-06-28 |
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| CN110864809B true CN110864809B (en) | 2021-07-09 |
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| CN111595460B (en) * | 2020-06-22 | 2025-02-21 | 深圳航天信息有限公司 | A high-precision infrared temperature measurement method and device based on face recognition |
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| CN103575406A (en) * | 2012-08-10 | 2014-02-12 | 弗卢克公司 | Thermal imaging camera with intermittent image capture |
| CN104713651A (en) * | 2015-03-06 | 2015-06-17 | 中国电子科技集团公司第十三研究所 | High-spatial-resolution and high-temporal-resolution infrared thermal imaging temperature measurement method |
| CN107271050A (en) * | 2017-07-19 | 2017-10-20 | 国网河北省电力公司衡水供电分公司 | Power transformer defect inspection method |
| CN108072459A (en) * | 2017-12-12 | 2018-05-25 | 中国舰船研究设计中心 | A kind of method for measuring steel billet temperature field and calculating its radiation intensity |
| CN108168707A (en) * | 2017-12-18 | 2018-06-15 | 山东神戎电子股份有限公司 | A kind of high temperature interference source minimizing technology based on thermal imaging |
| CN109900366A (en) * | 2019-03-22 | 2019-06-18 | 国网重庆市电力公司电力科学研究院 | A kind of method and device detecting arrester temperature anomaly point |
-
2019
- 2019-10-16 CN CN201910985391.XA patent/CN110864809B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103575406A (en) * | 2012-08-10 | 2014-02-12 | 弗卢克公司 | Thermal imaging camera with intermittent image capture |
| CN104713651A (en) * | 2015-03-06 | 2015-06-17 | 中国电子科技集团公司第十三研究所 | High-spatial-resolution and high-temporal-resolution infrared thermal imaging temperature measurement method |
| CN107271050A (en) * | 2017-07-19 | 2017-10-20 | 国网河北省电力公司衡水供电分公司 | Power transformer defect inspection method |
| CN108072459A (en) * | 2017-12-12 | 2018-05-25 | 中国舰船研究设计中心 | A kind of method for measuring steel billet temperature field and calculating its radiation intensity |
| CN108168707A (en) * | 2017-12-18 | 2018-06-15 | 山东神戎电子股份有限公司 | A kind of high temperature interference source minimizing technology based on thermal imaging |
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