CN110196112B - Ignition equipment state detection method and fire detector using same - Google Patents
Ignition equipment state detection method and fire detector using same Download PDFInfo
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- CN110196112B CN110196112B CN201910471650.7A CN201910471650A CN110196112B CN 110196112 B CN110196112 B CN 110196112B CN 201910471650 A CN201910471650 A CN 201910471650A CN 110196112 B CN110196112 B CN 110196112B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
- G01K15/007—Testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
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- Fire-Detection Mechanisms (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention relates to a fire detector which comprises a temperature detection module, a processor and an indication module. The temperature detection module is used for detecting the real-time temperature of the ignition device. The processor is connected with the temperature detection module and used for judging the state of the ignition device and outputting a corresponding signal. The indicating module is connected with the processor and indicates the state of the ignition device according to the signal output by the processor. The fire detector adopts an ignition equipment state detection method based on the real-time temperature and the temperature change rate of the ignition equipment. The invention can improve the accuracy and timeliness of the state detection of the ignition device, thereby ensuring the system safety and avoiding system faults.
Description
Technical Field
The invention belongs to the technical field of industrial detection, and particularly relates to a method for detecting the state of ignition equipment and a fire detector applying the method.
Background
The scheme of a common digital display measurement and control instrument (fire detector) applied to fire/no-fire detection of ignition equipment is as follows: setting a thermocouple, and acquiring a current real-time temperature value of ignition equipment by acquiring a temperature sensor signal of the thermocouple; setting upper and lower limits of corresponding temperature alarm values through a digital display measurement and control instrument, and judging the current fire/no-fire state in a processor according to the set upper and lower limits of the temperature alarm values: 1. judging that the ignition equipment is in a fire state when the current real-time temperature is larger than or equal to the upper limit of the temperature alarm value, enabling an AH output contact connected with the processor to act, and enabling an AL output contact of the relay to not act; 2. the lower limit of the temperature alarm value is smaller than the current real-time temperature and smaller than the upper limit of the temperature alarm value, the ignition equipment is judged to keep the original state unchanged, and the relay AH and the relay AL also keep unchanged; 3. and when the current real-time temperature is less than or equal to the lower limit of the temperature alarm value, judging that the ignition device is in a fireless state, enabling the AL output contact of the relay to act, and enabling the AH output contact of the relay to not act.
The panel of the digital display measurement and control instrument is shown in the attached figure 1, after the state of ignition equipment is judged, the state is displayed through a fire state indicating lamp or a non-fire state indicating lamp, the detected real-time temperature is displayed through a temperature display screen, and each preset value is set and displayed through a key group and a display screen.
The processor of the digital display measurement and control instrument is shown in figure 2, wherein terminals 1 and 2 are used for being connected with input signals of a thermocouple, a terminal 14 is used for being connected with an on-state output relay AH, and a terminal 17 is used for being connected with an off-state output relay AL.
The existing scheme for judging the fire/no-fire state according to the temperature measured by the digital display measurement and control instrument has time delay firstly, the fire/no-fire state cannot be obtained at the first time, and the fire/no-fire state can be determined only after the temperature rises/falls to a certain value, so that the real-time performance and the safety of the whole system are influenced by the time delay, and the efficiency of the system is reduced; meanwhile, the current scheme may cause inaccuracy in judging the ignition state of the system, such as: the flameout temperature is reduced but not reduced to the set lower limit, the ignition device is started again, the temperature is increased again, the ignition state reflected by the instrument is always in a fire state, and the flameout and flameout process cannot be reflected; this solution fails in the event of a thermocouple temperature sensor failure. The above problems of the existing meters may cause system malfunction and uneasiness.
Disclosure of Invention
The invention aims to provide a method for detecting the state of ignition equipment, which can improve the detection accuracy and timeliness, thereby ensuring the system safety and avoiding system faults.
In order to achieve the purpose, the invention adopts the technical scheme that:
an ignition device state detection method for detecting a fired state/unfired state of an ignition device, the ignition device state detection method comprising:
presetting detection related parameters including a temperature upper limit value AH, a temperature lower limit value AL, a temperature change rate alarm set value AHH and a temperature change rate alarm meeting difference value HYA 3;
detecting the real-time temperature of the ignition device, and if the real-time temperature of the ignition device is larger than or equal to the temperature upper limit value AH, judging that the ignition device is in a fired state; if the real-time temperature of the ignition device is less than or equal to the temperature lower limit value AL, judging that the ignition device is in a flameless state;
if the temperature lower limit AL is smaller than the real-time temperature of the ignition device and smaller than the temperature upper limit AH, calculating the change rate of the real-time temperature of the ignition device, and if the change rate of the real-time temperature of the ignition device is larger than or equal to the temperature change rate alarm set value AHH, judging that the ignition device is in a fired state; if the change rate of the real-time temperature of the ignition equipment is less than or equal to the difference between the temperature change rate alarm set value AHH and the temperature change rate alarm meeting difference value HYA3, judging that the ignition equipment is in a non-fire state; and if the difference between the temperature change rate alarm set value AHH and the temperature change rate alarm meeting difference HYA3 is less than the change rate of the real-time temperature of the ignition equipment is less than the temperature change rate alarm set value AHH, judging that the ignition equipment maintains the state of the ignition equipment judged in the previous time.
Calculating the change rate of the real-time temperature of the ignition device according to a preset time interval of t seconds, wherein the change rate of the real-time temperature of the ignition device is (the currently detected real-time temperature of the ignition device-the detected real-time temperature of the ignition device before t seconds)/t seconds.
Preferably, t is in a range of 1-30.
The invention also provides a measurement and control instrument applying the ignition equipment state detection method, namely a fire detector, which is used for detecting the fire state/no-fire state of the ignition equipment, and the fire detector comprises:
the temperature detection module is used for detecting the real-time temperature of the ignition equipment;
a processor connected with the temperature detection module and used for judging the state of the ignition device based on the ignition device state detection method according to any one of claims 1 to 3 and outputting a corresponding signal;
and the indicating module is connected with the processor and indicates the state of the ignition device according to the signal output by the processor.
Preferably, the temperature detection module comprises a thermocouple.
Preferably, the indication module comprises a status indication relay and/or a status indication lamp.
Preferably, the fire detector further comprises a setting module for presetting the detection related parameters, and the setting module comprises a button group and a setting display screen.
Preferably, the fire detector further comprises a temperature display screen connected with the processor and used for displaying the real-time temperature of the ignition device detected by the temperature detection module.
Preferably, the fire detector further comprises a power supply module.
Preferably, the fire detector further comprises a fault indicator light for displaying whether the temperature detection module is in fault.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the invention can improve the accuracy and timeliness of the state detection of the ignition device, thereby ensuring the system safety and avoiding system faults.
Drawings
FIG. 1 is a schematic diagram of a panel of a conventional digital display measurement and control instrument.
FIG. 2 is a schematic diagram of a processor of a conventional digital display measurement and control instrument.
Fig. 3 is a schematic view of a panel of the fire detector of the present invention.
Fig. 4 is a schematic diagram of a processor of the fire detector of the present invention.
Fig. 5 is a flow chart of the ignition device state detection method of the present invention.
In the above drawings: 1. a temperature display screen; 2. setting a display screen; 3. a key group; 4. a fire status indicator light; 5. a fireless status indicator light; 6. and a fault indicator lamp.
Detailed Description
The invention will be further described with reference to examples of embodiments shown in the drawings to which the invention is attached.
The first embodiment is as follows: a fire detector for detecting a fire state/no-fire state of ignition equipment mainly comprises a temperature detection module, a processor and an indication module.
The temperature detection module is used for detecting the real-time temperature of the ignition device. In this embodiment, a thermocouple is used.
The processor is connected with the temperature detection module and used for executing the ignition device state detection method according to the real-time temperature of the ignition device detected by the temperature detection module to judge the state of the ignition device and output a corresponding signal.
The indicating module is connected with the processor and used for indicating the state of the ignition device according to the signal output by the processor. The indicating module comprises a state indicating relay AH and/or state indicating lamps, and the number of the state indicating lamps can be two, namely an unfired state indicating lamp 5(AH) (green) for indicating the unfired state and a fired state indicating lamp 4(AL) (red) for indicating the fired state. The status indicator lamps 4 and 5 can be controlled to be turned on or off through an indicator relay AH.
The processor is shown in fig. 4, wherein terminals 1 and 2 are used for connecting the thermocouple to obtain an input signal, and a terminal 14 is used for connecting a state indicating relay AH. The state indicating relay AH is in a live state when it is operated under the control of the processor output signal, and in a non-live state when it is not operated.
In addition, the fire detector further comprises a setting module, a temperature display screen 1, a power supply module and a fault indicator lamp 6. The setting module is used for presetting relevant detection parameters required by the processor to execute the ignition device state detection method, so the setting module generally comprises a button group 3 and a setting display screen 2 which are connected with the processor. The temperature display screen 1 is connected with the processor and used for displaying the real-time temperature of the ignition device detected by the temperature detection module. The power module is used for supplying power for the temperature detection module and the processor. Fault indicator 6 (red) is used for showing whether temperature detection module is out of order, and its action can be controlled to fault indicator 6 with the relay AL who is connected with the No. 17 terminal of treater, and when temperature detection module trouble, relay AL moved, and fault indicator 6 lights, and when temperature detection module does not have the trouble, relay AL did not move, and fault indicator 6 goes out. The button group 3, the setting display screen 2, the temperature display screen 1, the fault indicator lamp 6 and the status indicator lamps 4 and 5 are all arranged on a panel of the fire detector, as shown in the attached drawing 3. The panel of the fire detector is positioned on one side of the shell of the fire detector.
As shown in fig. 5, the processor adopts the following ignition device state detection method:
1. presetting detection related parameters including a temperature upper limit value AH, a temperature lower limit value AL, a temperature change rate alarm set value AHH and a temperature change rate alarm meeting difference value HYA 3.
2. The real-time temperature X of the ignition device is periodically detected by means of a thermocouple, and the detected real-time temperature X is displayed by means of the temperature display screen 1. Firstly, judging whether the thermocouple is in fault, if so, controlling the state indicating relay AH to not act, controlling the relay AL to act, lighting the no-fire state indicating lamp 5, turning off the fire state indicating lamp 4 and lighting the fault indicating lamp 6; if not, continuing to judge the real-time temperature:
(1) if the real-time temperature X of the ignition equipment is larger than or equal to the temperature upper limit value AH, the ignition equipment is judged to be in a fire state, the state indicating relay AH acts, the relay AL does not act, the fire state indicating lamp 4 is on, the fire-free state indicating lamp 5 is off, and the fault indicating lamp 6 is off.
(2) If the real-time temperature X of the ignition equipment is less than or equal to the temperature lower limit value AL, the ignition equipment is judged to be in a non-fire state, the state indicating relay AH does not act, the relay AL does not act, the fire state indicating lamp 4 is turned off, the non-fire state indicating lamp 5 is turned on, and the fault indicating lamp 6 is turned off.
(3) And if the temperature lower limit value AL is less than the real-time temperature X of the ignition device and less than the temperature upper limit value AH, calculating the change rate Y of the real-time temperature of the ignition device. The temperature change rate Y can also be calculated in time after the real-time temperature is collected.
The method for calculating the temperature change rate Y comprises the following steps: and calculating the change rate Y of the real-time temperature of the ignition device according to a preset time interval t seconds, wherein the change rate Y of the real-time temperature of the ignition device is (the real-time temperature of the currently detected ignition device-the real-time temperature of the ignition device detected before t seconds)/t seconds. Wherein the value range of t is 1-30.
After calculating the change rate Y of the real-time temperature of the ignition device, the following judgment is carried out:
if the change rate Y of the real-time temperature of the ignition equipment is larger than or equal to the temperature change rate alarm set value AHH, judging that the ignition equipment is in a fire state, indicating the actions of a relay AH by a state, not indicating the actions of a relay AL, indicating a fire state lamp 4, an indicator lamp 5 in a fire-free state and indicating a fault lamp 6 to be turned off.
And secondly, if the change rate Y of the real-time temperature of the ignition equipment is less than or equal to the difference between a temperature change rate alarm set value AHH and a temperature change rate alarm difference value HYA3, judging that the ignition equipment is in a non-fire state, the state indicating relay AH does not act, the relay AL does not act, the fire state indicating lamp 4 is turned off, the non-fire state indicating lamp 5 is turned on, and the fault indicating lamp 6 is turned off.
And thirdly, if the difference between the temperature change rate alarm set value AHH and the temperature change rate alarm meeting difference HYA3 is less than the change rate Y of the real-time temperature of the ignition equipment is less than the temperature change rate alarm set value AHH, judging that the ignition equipment maintains the state of the ignition equipment judged in the previous time, namely the state of a state indicating relay AH keeps unchanged, a relay AL does not act, a fire state indicating lamp 4 and a fire-free state indicating lamp 5 both keep the current state unchanged, and a fault indicating lamp 6 is turned off.
In the above scheme, each preset detection related parameter, including the temperature upper limit value AH, the temperature lower limit value AL, the temperature change rate alarm set value AHH, the temperature change rate alarm meeting difference HYA3 and the time interval t seconds, can be set according to the needs of the actual situation. For example: setting the upper temperature limit value AH to 500.0, the lower temperature limit value AL to 70.0, the temperature change rate alarm set value AHH to 5.0, and the temperature change rate alarm difference HYA3 to 10.0, then:
a) when the measured real-time temperature X is greater than or equal to 500.0 ℃, the state indicating relay AH outputs, the on-fire state indicating lamp 4 is on, and the off-fire state indicating lamp 5 is off, indicating that the fire exists;
b) when the measured real-time temperature X is less than or equal to 70.0 ℃, the state indicating relay AH is switched off, the fire state indicating lamp 4 is turned off, and the no-fire state indicating lamp 5 is turned on to indicate no fire;
c) when the measured real-time temperature X is less than 500.0 ℃ and is less than 70.0 ℃, judging the temperature change rate:
if the temperature change rate Y is more than or equal to 5.0, the state indicating relay AH outputs, the on-fire state indicating lamp 4 is on, and the off-fire state indicating lamp 5 is off, indicating that a fire exists;
if the temperature change rate Y is more than-5.0 and less than 5.0, the state indicating relay AH, the live state indicating lamp 4 and the no-live state indicating lamp 5 keep the current state unchanged;
if the temperature change rate Y is less than or equal to-5.0, the state indicating relay AH is switched off, the fire state indicating lamp 4 is switched off, and the non-fire state indicating lamp 5 is switched on to indicate no fire.
The above state changes are shown in the following table:
the above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A state detection method of an ignition device for detecting a fired state/unfired state of the ignition device, characterized in that: the ignition device state detection method comprises the following steps:
presetting detection related parameters including a temperature upper limit value (AH), a temperature lower limit value (AL), a temperature change rate alarm set value (AHH) and a temperature change rate alarm meeting difference value (HYA 3);
detecting the real-time temperature of the ignition equipment, and if the real-time temperature of the ignition equipment is more than or equal to the upper temperature limit value (AH), judging that the ignition equipment is in a fire state; if the real-time temperature of the ignition device is less than or equal to the temperature lower limit value (AL), judging that the ignition device is in a flameless state;
if the temperature lower limit value (AL) < the real-time temperature of the ignition device < the temperature upper limit value (AH), calculating the change rate of the real-time temperature of the ignition device, and if the change rate of the real-time temperature of the ignition device is greater than or equal to the temperature change rate alarm set value (AHH), judging that the ignition device is in a fire state; if the change rate of the real-time temperature of the ignition equipment is less than or equal to the difference between the temperature change rate alarm set value (AHH) and the temperature change rate alarm meeting difference value (HYA 3), judging that the ignition equipment is in a flameless state; and if the difference between the temperature change rate alarm set value (AHH) and the temperature change rate alarm meeting difference value (HYA 3) is less than the change rate of the real-time temperature of the ignition equipment is less than the temperature change rate alarm set value (AHH), judging that the ignition equipment maintains the state of the ignition equipment judged in the previous time.
2. The ignition device state detecting method according to claim 1, characterized in that: calculating the change rate of the real-time temperature of the ignition device according to a preset time interval of t seconds, wherein the change rate of the real-time temperature of the ignition device = (the currently detected real-time temperature of the ignition device-the detected real-time temperature of the ignition device before t seconds)/t seconds.
3. The ignition device state detecting method according to claim 2, characterized in that: the value range of t is 1-30.
4. A fire detector for detecting a fired/unfired state of an ignition device, characterized in that: the fire detector comprises:
the temperature detection module is used for detecting the real-time temperature of the ignition equipment;
a processor connected with the temperature detection module and used for judging the state of the ignition device based on the ignition device state detection method according to any one of claims 1 to 3 and outputting a corresponding signal;
and the indicating module is connected with the processor and indicates the state of the ignition device according to the signal output by the processor.
5. A fire detector as claimed in claim 4, wherein: the temperature detection module comprises a thermocouple.
6. A fire detector as claimed in claim 4, wherein: the indicating module comprises a status indicating relay and/or a status indicating lamp.
7. A fire detector as claimed in claim 4, wherein: the fire detector further comprises a setting module for presetting the detection related parameters, and the setting module comprises a button group and a setting display screen.
8. A fire detector as claimed in claim 4, wherein: the fire detector also comprises a temperature display screen which is connected with the processor and is used for displaying the real-time temperature of the ignition equipment detected by the temperature detection module.
9. A fire detector as claimed in claim 4, wherein: the fire detector also comprises a power module.
10. A fire detector as claimed in claim 4, wherein: the fire detector also comprises a fault indicator lamp for displaying whether the temperature detection module has faults or not.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910471650.7A CN110196112B (en) | 2019-05-31 | 2019-05-31 | Ignition equipment state detection method and fire detector using same |
| PCT/CN2019/120474 WO2020238089A1 (en) | 2019-05-31 | 2019-11-25 | Method for detecting state of ignition apparatus, and ignition detection device using same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910471650.7A CN110196112B (en) | 2019-05-31 | 2019-05-31 | Ignition equipment state detection method and fire detector using same |
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| CN110196112A CN110196112A (en) | 2019-09-03 |
| CN110196112B true CN110196112B (en) | 2021-07-16 |
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| WO (1) | WO2020238089A1 (en) |
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| CN110196112B (en) * | 2019-05-31 | 2021-07-16 | 苏州迅鹏仪器仪表有限公司 | Ignition equipment state detection method and fire detector using same |
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| JPH0765267A (en) * | 1993-08-23 | 1995-03-10 | Matsushita Electric Works Ltd | Fire alarm device and thermal sensor |
| CN101464096A (en) * | 2008-12-11 | 2009-06-24 | 江苏金源锻造股份有限公司 | Multi-point sensing and intelligent control method for temperature of gas heating stove |
| CN103486872A (en) * | 2013-09-26 | 2014-01-01 | 栗琳 | Calciner combustion state monitoring method and device and calciner system |
| CN105527937A (en) * | 2014-10-23 | 2016-04-27 | 中国石油天然气股份有限公司 | Alarm method, alarm device and alarm system for fireflood ignition |
| CN106610036A (en) * | 2015-10-22 | 2017-05-03 | 台湾樱花股份有限公司 | Gas stove combustion condition detecting device and detecting method thereof |
| CN106838975A (en) * | 2016-12-21 | 2017-06-13 | 河南万安油气设备工程有限公司 | Flame based on temperature measuring equipment temperature change trend fires the state judging method that goes out |
| CN107014205A (en) * | 2017-04-14 | 2017-08-04 | 北京首钢自动化信息技术有限公司 | Automatic temperature control energy-saving method for sintering ignition furnace |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110196112B (en) * | 2019-05-31 | 2021-07-16 | 苏州迅鹏仪器仪表有限公司 | Ignition equipment state detection method and fire detector using same |
-
2019
- 2019-05-31 CN CN201910471650.7A patent/CN110196112B/en active Active
- 2019-11-25 WO PCT/CN2019/120474 patent/WO2020238089A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0765267A (en) * | 1993-08-23 | 1995-03-10 | Matsushita Electric Works Ltd | Fire alarm device and thermal sensor |
| CN101464096A (en) * | 2008-12-11 | 2009-06-24 | 江苏金源锻造股份有限公司 | Multi-point sensing and intelligent control method for temperature of gas heating stove |
| CN103486872A (en) * | 2013-09-26 | 2014-01-01 | 栗琳 | Calciner combustion state monitoring method and device and calciner system |
| CN105527937A (en) * | 2014-10-23 | 2016-04-27 | 中国石油天然气股份有限公司 | Alarm method, alarm device and alarm system for fireflood ignition |
| CN106610036A (en) * | 2015-10-22 | 2017-05-03 | 台湾樱花股份有限公司 | Gas stove combustion condition detecting device and detecting method thereof |
| CN106838975A (en) * | 2016-12-21 | 2017-06-13 | 河南万安油气设备工程有限公司 | Flame based on temperature measuring equipment temperature change trend fires the state judging method that goes out |
| CN107014205A (en) * | 2017-04-14 | 2017-08-04 | 北京首钢自动化信息技术有限公司 | Automatic temperature control energy-saving method for sintering ignition furnace |
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| CN110196112A (en) | 2019-09-03 |
| WO2020238089A1 (en) | 2020-12-03 |
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