CN103954371A - Early warning method for damage to thermocouple protection device and thermocouple temperature monitor - Google Patents
Early warning method for damage to thermocouple protection device and thermocouple temperature monitor Download PDFInfo
- Publication number
- CN103954371A CN103954371A CN201410145081.4A CN201410145081A CN103954371A CN 103954371 A CN103954371 A CN 103954371A CN 201410145081 A CN201410145081 A CN 201410145081A CN 103954371 A CN103954371 A CN 103954371A
- Authority
- CN
- China
- Prior art keywords
- temperature
- slope
- variation
- temperature variation
- threshold value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Emergency Alarm Devices (AREA)
Abstract
The invention belongs to the field of metallurgy and provides an early warning method for damage to a thermocouple protection device and a thermocouple temperature monitor. The method comprises the steps that under a normal production condition, the average slope of temperature variation is measured according to thermal voltage output by a thermocouple; the temperature variation is monitored in real time, and a warning signal is output when at a certain moment, the slope of the temperature variation, the amplitude of the temperature variation and the frequency of temperature oscillation exceed the expectation. According to the early warning method for the damage to the thermocouple protection device and the thermocouple temperature monitor, the slope of the temperature variation and the amplitude of the temperature variation are monitored, and whether temperature fluctuates back and forth or not is judged; when the expectation conditions are all met, an early warning of the damage to the thermocouple protection device is given, which indicates that the thermocouple protection device in a high-temperature environment is already damaged; in this way, maintainers can be notified of replacement of the protection device in time, and finally expensive thermocouple wires can be protected against damage.
Description
Technical field
The invention belongs to field of metallurgy, relate in particular to method for early warning and electric thermo-couple temperature watch-dog that a kind of electric thermo-couple protector damages.
Background technology
Heat generator vault thermometric for metallurgy industry; conventionally adopt noble-metal thermocouple to carry out temperature detection; because heat generator vault and hot-blast main's temperature may be up to 1300 ℃, and the pressure hot blast that is 0.2～0.3MPa do not stop to wash away the protective device of thermopair, so thermopair often damages.In early days the stage, owing to knowing electric thermo-couple protector damage information not in time, conventionally can cause whole thermopair to be scrapped.
Summary of the invention
In view of the above problems, the method for early warning and the electric thermo-couple temperature watch-dog that the object of the present invention is to provide a kind of electric thermo-couple protector to damage, be intended to solve the technical matters that prior art cannot be known the damage information of electric thermo-couple protector in time.
On the one hand, described method comprises the steps:
Under the normal condition of production, according to the thermal voltage of thermopair output, record the average gradient of temperature variation;
Real-Time Monitoring temperature variation, under at a time, when temperature variation slope, range of temperature, temperature oscillation frequency are greater than expection, outputting alarm signal.
On the other hand, described electric thermo-couple temperature watch-dog comprises:
Average gradient computing module, under the normal condition of production, according to the thermal voltage of thermopair output, records the average gradient of temperature variation;
Temperature judgement output module, for Real-Time Monitoring temperature variation, under at a time, when temperature variation slope, range of temperature, temperature oscillation frequency are greater than expection, outputting alarm signal.
The invention has the beneficial effects as follows: the thermal voltage signal monitoring temperature variation that the present invention exports in real time according to thermopair; when temperature variation slope, range of temperature and temperature oscillation frequency are all greater than expection; outputting alarm signal; illustrate that now fault has appearred in electric thermo-couple protector; so that maintenance personal changes protective device in time, finally make expensive thermopair thermo wires not damaged.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the method for early warning that damages of the electric thermo-couple protector that provides of first embodiment of the invention;
Fig. 2 is the process flow diagram of the method for early warning that damages of the electric thermo-couple protector that provides of second embodiment of the invention;
Fig. 3 is the block diagram of the electric thermo-couple temperature watch-dog that provides of third embodiment of the invention;
Fig. 4 is the block diagram of the electric thermo-couple temperature watch-dog that provides of fourth embodiment of the invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
For technical solutions according to the invention are described, below by specific embodiment, describe.
embodiment mono-:
The flow process of the method for early warning that the electric thermo-couple protector that Fig. 1 shows first embodiment of the invention to be provided damages, only shows the part relevant to the embodiment of the present invention for convenience of explanation.
The method for early warning that the galvanic couple protective device that the present embodiment provides damages comprises the steps:
Step S101, under the normal condition of production, according to the thermal voltage of thermopair output, record the average gradient of temperature variation.
Thermopair is placed in protective device, and protective device is mainly used for thermopair to be isolated from the outside, and increases the serviceable life of thermopair, and when protective device breaks down or damage, thermopair is easy to go wrong.Thermopair is temperature element conventional in temperature measuring instrument, its ultimate principle is that the material conductor of two kinds of different components forms closed-loop path, when there is thermograde in two ends, in loop, just having electric current passes through, now between two ends, just there is thermopower, then by electric meter, measure thermopower, thermopower can be converted to the temperature of measured medium.In this step, by temperature monitor, heat generator vault thermopair is gathered to defeated thermal voltage signal and process, convert corresponding temperature to, then calculate the vault variation slope that temperature rises, declines the in the situation that of normal production, and these slopes are averaged, be designated as average gradient.
Step S102, Real-Time Monitoring temperature variation, under at a time, when temperature variation slope, range of temperature, temperature oscillation frequency are greater than expection, outputting alarm signal.
In thermopair there is temperature difference in free end and working end, in galvanic couple loop, corresponding thermopower will be produced, if protective device (being generally protection tube) infiltration is leaked out, free-ended temperature shifts to an earlier date relatively, the temperature difference of free end and working end reduces, and inleakage is larger, free-ended temperature is just larger, and the temperature difference of free end and working end is just less; Because infiltration is leaked out, hot blast play back and forth in protection tube, makes the temperature difference of free end and working end not stop fluctuation; the thermopower of corresponding output also changes thereupon, is presented as that temperature first reduces in temperature monitor, is then raising; continue again to reduce, do not stop repeatedly back and forth.Therefore in this step; by monitoring dome temperature, change slope, range of temperature and temperature oscillation frequency; when it is worth all over expection; can assert that damaging appears in protective device; send warning; so that maintenance personal changes protective device in time, make expensive thermopair thermo wires not damaged.
embodiment bis-:
The flow process of the method for early warning that the electric thermo-couple protector that Fig. 2 shows second embodiment of the invention to be provided damages, only shows the part relevant to the embodiment of the present invention for convenience of explanation.
The method for early warning that the galvanic couple protective device that the present embodiment provides damages comprises the steps:
Step S201, under the normal condition of production, according to the thermal voltage of thermopair output, record the average gradient of temperature variation.
This step is identical with step S101 in embodiment mono-, repeats no more herein.
Step S202, Real-Time Monitoring temperature variation, at regular intervals interval calculation temperature variation slope;
Step S203, judge that Current Temperatures changes slope and whether is greater than default slope threshold value;
If step S204 is greater than default slope threshold value, further judge whether Current Temperatures amplitude of variation is greater than preset temperature threshold value;
If step S205 is greater than preset temperature threshold value, further judge that whether temperature is in change in oscillation;
Step S206, when temperature is change in oscillation, outputting alarm signal.
Above-mentioned steps S202-S206 specifically discloses a kind of concrete preferred implementation of step S102 in embodiment mono-, and temperature monitor is interval collecting temperature at regular intervals, and accounting temperature changes slope.If changing slope, Current Temperatures is greater than default slope threshold value (such as the described average gradient of 2 times), further judge Current Temperatures amplitude of variation whether be greater than preset temperature threshold value (such as thermopair full scale 10%), when being greater than described preset temperature threshold value, further judge that whether temperature is in change in oscillation; If so, outputting alarm signal prompt maintenance personal protective device goes wrong.In the present embodiment, described Current Temperatures amplitude of variation is the difference of Current Temperatures and previous moment temperature.In addition, according to current time temperature, previous moment temperature and previous time temperature, can judge that whether Current Temperatures is in change in oscillation.
embodiment tri-:
Fig. 3 shows the structure of the electric thermo-couple temperature watch-dog that third embodiment of the invention provides, and only shows for convenience of explanation the part relevant to the embodiment of the present invention.
The electric thermo-couple temperature watch-dog that the present embodiment provides comprises:
Average gradient computing module 301, under the normal condition of production, according to the thermal voltage of thermopair output, records the average gradient of temperature variation;
Temperature judgement output module 302, for Real-Time Monitoring temperature variation, under at a time, when temperature variation slope, range of temperature, temperature oscillation frequency are greater than expection, outputting alarm signal.
In the present embodiment, thermopair at regular intervals interval gathers a temperature data, according to the thermal voltage of adjacent twice output, can calculate the temperature variation slope of current time, average gradient computing module 301, after getting each temperature variation slope constantly, calculates average gradient; Temperature judgement output module 302 changes slope, range of temperature, temperature oscillation frequency by monitor temperature; when it is worth all over expection; can assert that damaging appears in protective device; send warning; so that maintenance personal changes protective device in time, make expensive thermopair thermo wires not damaged.
embodiment tetra-:
Fig. 4 shows the structure of the electric thermo-couple temperature watch-dog that fourth embodiment of the invention provides, and only shows for convenience of explanation the part relevant to the embodiment of the present invention.
The electric thermo-couple temperature watch-dog that the present embodiment provides comprises:
Average gradient computing module 41, under the normal condition of production, according to the thermal voltage of thermopair output, records the average gradient of temperature variation;
Temperature judgement output module 42, for Real-Time Monitoring temperature variation, under at a time, when temperature variation slope, range of temperature, temperature oscillation frequency are greater than expection, outputting alarm signal.
Wherein said temperature judgement output module 42 comprises:
Slope calculation unit SCU 421, for Real-Time Monitoring temperature variation, interval calculation temperature variation slope at regular intervals;
Slope judging unit 422, for judging that Current Temperatures changes slope and whether is greater than default slope threshold value;
Amplitude judging unit 423, for when the judgement of slope judging unit is, further judges whether Current Temperatures amplitude of variation is greater than preset temperature threshold value;
Vibration judging unit 424, for when the judgement of amplitude judging unit is, further judges that whether temperature is in change in oscillation;
Alarm output unit 425, for when temperature is change in oscillation, outputting alarm signal.
The present embodiment further discloses a kind of concrete preferred structure of temperature judgement output module on the basis of embodiment tri-, by slope judging unit 422 judgement slope variation, by amplitude judging unit 423 interpretation temperature amplitudes, change, by vibration judging unit 424, judge whether change in oscillation of temperature, when temperature variation slope is greater than default slope threshold value (such as the described average gradient of 2 times), and Current Temperatures amplitude of variation preset temperature threshold value (such as thermopair full scale 10%), when simultaneous temperature is change in oscillation, can assert that damaging appears in protective device, alarm output unit 425 sends warning, such as expressing by pilot lamp.
To sum up; in above-mentioned several embodiment; by monitoring temperature, change slope, range of temperature and judge whether back and forth fluctuation of temperature; when all meeting anticipated conditions; send the early warning that electric thermo-couple protector damages; show that the electric thermo-couple protector in hot environment damages, to notify maintenance personal to change in time protective device, finally make expensive thermopair thermo wires not damaged.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. the method for early warning that electric thermo-couple protector damages, is characterized in that, described method comprises:
Under the normal condition of production, according to the thermal voltage of thermopair output, record the average gradient of temperature variation;
Real-Time Monitoring temperature variation, under at a time, when temperature variation slope, range of temperature, temperature oscillation frequency are greater than expection, outputting alarm signal.
2. method as claimed in claim 1, is characterized in that, described Real-Time Monitoring temperature variation, and under at a time, when temperature variation slope, range of temperature, temperature oscillation frequency are greater than expection, outputting alarm signals step, specifically comprises:
Real-Time Monitoring temperature variation, at regular intervals interval calculation temperature variation slope;
Judge that Current Temperatures changes slope and whether is greater than default slope threshold value;
If be greater than default slope threshold value, further judge whether Current Temperatures amplitude of variation is greater than preset temperature threshold value;
If be greater than preset temperature threshold value, further judge that whether temperature is in change in oscillation;
When temperature is change in oscillation, outputting alarm signal.
3. method as claimed in claim 2, is characterized in that, described default slope threshold value is 2 times of described average gradients.
4. method as claimed in claim 3, is characterized in that, described preset temperature threshold value is 10% of thermopair full scale.
5. an electric thermo-couple temperature watch-dog, is characterized in that, described electric thermo-couple temperature watch-dog comprises:
Average gradient computing module, under the normal condition of production, according to the thermal voltage of thermopair output, records the average gradient of temperature variation;
Temperature judgement output module, for Real-Time Monitoring temperature variation, under at a time, when temperature variation slope, range of temperature, temperature oscillation frequency are greater than expection, outputting alarm signal.
6. electric thermo-couple temperature watch-dog as claimed in claim 5, is characterized in that, described temperature judgement output module comprises:
Slope calculation unit SCU, for Real-Time Monitoring temperature variation, interval calculation temperature variation slope at regular intervals;
Slope judging unit, for judging that Current Temperatures changes slope and whether is greater than default slope threshold value;
Amplitude judging unit, for when the judgement of slope judging unit is, further judges whether Current Temperatures amplitude of variation is greater than preset temperature threshold value;
Vibration judging unit, for when the judgement of amplitude judging unit is, further judges that whether temperature is in change in oscillation;
Alarm output unit, for when temperature is change in oscillation, outputting alarm signal.
7. electric thermo-couple temperature watch-dog as claimed in claim 6, is characterized in that, described default slope threshold value is 2 times of described average gradients.
8. electric thermo-couple temperature watch-dog as claimed in claim 7, is characterized in that, described preset temperature threshold value is 10% of thermopair full scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410145081.4A CN103954371B (en) | 2014-04-11 | 2014-04-11 | Method for early warning and electric thermo-couple temperature monitor that electric thermo-couple protector is damaged |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410145081.4A CN103954371B (en) | 2014-04-11 | 2014-04-11 | Method for early warning and electric thermo-couple temperature monitor that electric thermo-couple protector is damaged |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103954371A true CN103954371A (en) | 2014-07-30 |
| CN103954371B CN103954371B (en) | 2017-10-13 |
Family
ID=51331678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410145081.4A Active CN103954371B (en) | 2014-04-11 | 2014-04-11 | Method for early warning and electric thermo-couple temperature monitor that electric thermo-couple protector is damaged |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103954371B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289833A (en) * | 2016-07-28 | 2017-01-04 | 国网北京市电力公司 | The fault detection method of thermal store and device |
| CN106441632A (en) * | 2016-09-07 | 2017-02-22 | 广州视源电子科技股份有限公司 | Detection method and detection device for thermometer |
| CN109959465A (en) * | 2017-12-22 | 2019-07-02 | 中冶京诚工程技术有限公司 | Motor temperature early warning guard method, computer equipment and readable storage medium storing program for executing |
| CN111060840A (en) * | 2019-10-12 | 2020-04-24 | 威凯检测技术有限公司 | Automatic measurement method and system for lamp thermal test |
| CN112026845A (en) * | 2020-09-02 | 2020-12-04 | 中车青岛四方机车车辆股份有限公司 | Train temperature monitoring method and device, train, electronic equipment and medium |
| CN112629690A (en) * | 2020-11-19 | 2021-04-09 | 上海亚泰仪表有限公司 | Weighted average temperature measurement method and sensor based on complex physicochemical treatment process |
| CN112684242A (en) * | 2020-10-26 | 2021-04-20 | 国网安徽省电力有限公司信息通信分公司 | Big data-based electric power system analysis and early warning method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0112929A1 (en) * | 1982-12-17 | 1984-07-11 | ERBÖ-MASCHINENBAU ERLEY & BÖNNINGER GMBH & CO. KG | Device for monitoring the function of belt-supporting rollers in belt conveyors |
| CN101165738A (en) * | 2006-10-19 | 2008-04-23 | 深圳市豪恩科技股份有限公司 | Infrared detecting method and method for updating threshold value |
| CN101886152A (en) * | 2010-06-02 | 2010-11-17 | 河北省首钢迁安钢铁有限责任公司 | Three-dimensional unstable state monitoring and abnormity diagnosis and maintenance system of blast furnace hearth |
| CN102080569A (en) * | 2010-12-10 | 2011-06-01 | 煤炭科学研究总院重庆研究院 | Distributed optical fiber temperature measurement-based fire early warning method for belt conveyor |
| CN202092842U (en) * | 2011-05-06 | 2011-12-28 | 神华集团有限责任公司 | Sleeve monitoring device |
| CN202374000U (en) * | 2011-12-14 | 2012-08-08 | 杭州市电力局 | Control device for realizing balance charging of battery pack and battery box |
| CN103130095A (en) * | 2011-11-30 | 2013-06-05 | 深圳市一兆科技发展有限公司 | Elevator fault early warning method and relevant server |
-
2014
- 2014-04-11 CN CN201410145081.4A patent/CN103954371B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0112929A1 (en) * | 1982-12-17 | 1984-07-11 | ERBÖ-MASCHINENBAU ERLEY & BÖNNINGER GMBH & CO. KG | Device for monitoring the function of belt-supporting rollers in belt conveyors |
| CN101165738A (en) * | 2006-10-19 | 2008-04-23 | 深圳市豪恩科技股份有限公司 | Infrared detecting method and method for updating threshold value |
| CN101886152A (en) * | 2010-06-02 | 2010-11-17 | 河北省首钢迁安钢铁有限责任公司 | Three-dimensional unstable state monitoring and abnormity diagnosis and maintenance system of blast furnace hearth |
| CN102080569A (en) * | 2010-12-10 | 2011-06-01 | 煤炭科学研究总院重庆研究院 | Distributed optical fiber temperature measurement-based fire early warning method for belt conveyor |
| CN102080569B (en) * | 2010-12-10 | 2014-03-19 | 中煤科工集团重庆研究院 | Distributed optical fiber temperature measurement-based fire early warning method for belt conveyor |
| CN202092842U (en) * | 2011-05-06 | 2011-12-28 | 神华集团有限责任公司 | Sleeve monitoring device |
| CN103130095A (en) * | 2011-11-30 | 2013-06-05 | 深圳市一兆科技发展有限公司 | Elevator fault early warning method and relevant server |
| CN202374000U (en) * | 2011-12-14 | 2012-08-08 | 杭州市电力局 | Control device for realizing balance charging of battery pack and battery box |
Non-Patent Citations (1)
| Title |
|---|
| 一机部通用机械研究所: "《30万吨/年合成氨装置废热锅炉设计计算和研制 下册》", 31 December 1979 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289833A (en) * | 2016-07-28 | 2017-01-04 | 国网北京市电力公司 | The fault detection method of thermal store and device |
| CN106289833B (en) * | 2016-07-28 | 2020-02-07 | 国网北京市电力公司 | Fault detection method and device for heat storage body |
| CN106441632A (en) * | 2016-09-07 | 2017-02-22 | 广州视源电子科技股份有限公司 | Detection method and detection device for thermometer |
| CN106441632B (en) * | 2016-09-07 | 2019-01-29 | 广州视源电子科技股份有限公司 | A kind of detection method of thermometer and the detection device of thermometer |
| CN109959465A (en) * | 2017-12-22 | 2019-07-02 | 中冶京诚工程技术有限公司 | Motor temperature early warning guard method, computer equipment and readable storage medium storing program for executing |
| CN111060840A (en) * | 2019-10-12 | 2020-04-24 | 威凯检测技术有限公司 | Automatic measurement method and system for lamp thermal test |
| CN112026845A (en) * | 2020-09-02 | 2020-12-04 | 中车青岛四方机车车辆股份有限公司 | Train temperature monitoring method and device, train, electronic equipment and medium |
| CN112684242A (en) * | 2020-10-26 | 2021-04-20 | 国网安徽省电力有限公司信息通信分公司 | Big data-based electric power system analysis and early warning method |
| CN112629690A (en) * | 2020-11-19 | 2021-04-09 | 上海亚泰仪表有限公司 | Weighted average temperature measurement method and sensor based on complex physicochemical treatment process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103954371B (en) | 2017-10-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103954371A (en) | Early warning method for damage to thermocouple protection device and thermocouple temperature monitor | |
| EP2527942B1 (en) | System and method for estimating remaining life for a device | |
| JP5910428B2 (en) | Monitoring device, monitoring method, program, and recording medium | |
| EP2926428B1 (en) | Monitoring operating condition of electrical component | |
| CN103854446B (en) | A kind of dynamic temperature rise diagnostic alarms method and apparatus of high-tension switch cabinet | |
| US9726576B2 (en) | Equipment monitoring system | |
| CN104635121A (en) | Temperature compensation of insulation monitoring for rotating machines | |
| EP2901226B1 (en) | Process variable measurement noise diagnostic | |
| KR20120084735A (en) | Device for detecting a blockage of a mechanical fluid meter, and meter featuring blockage detection | |
| CN105785164B (en) | The judgment method and system of surge protector life expectancy | |
| US10371143B2 (en) | System and method for health determination of a machine component | |
| KR100726197B1 (en) | Method and system for realtime monitoring of bus duct | |
| JP2015141513A (en) | Control device, management device, plant control system, and data processing method | |
| CN102151814A (en) | Bonding alarm method and system during continuous casting production | |
| US8613883B2 (en) | Diagnostic system and method for metallurgical reactor cooling elements | |
| CN103878335A (en) | Method for preventing crystallizer of continuous casting machine from sticking breakout | |
| JP2015090535A (en) | Resin molding step monitor wireless network system | |
| US7249287B2 (en) | Methods and apparatus for providing alarm notification | |
| CN105509815A (en) | Method for collecting and monitoring non-electricity signals based on integration algorithm | |
| KR102114709B1 (en) | Energy-saving smart freeze protection system | |
| CN103474381B (en) | Utilize temperature contrast monitoring wafer in the method for the position deviation of high temperature cavity | |
| KR100898077B1 (en) | Method and Apparatus for Supervising Integrated Trip Margin of Facilities in Industrial Plant | |
| JP5191297B2 (en) | Remaining life measurement system | |
| KR102238293B1 (en) | Method for detecting damage during operation of a gas turbine | |
| US20150369236A1 (en) | System and method for health determination of a machine component |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |