CN106918033A - Three impulses leakage of boiler tubes alarm control system and method - Google Patents
Three impulses leakage of boiler tubes alarm control system and method Download PDFInfo
- Publication number
- CN106918033A CN106918033A CN201710170745.6A CN201710170745A CN106918033A CN 106918033 A CN106918033 A CN 106918033A CN 201710170745 A CN201710170745 A CN 201710170745A CN 106918033 A CN106918033 A CN 106918033A
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- temperature
- extreme point
- value
- unit
- setting value
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/42—Applications, arrangements, or dispositions of alarm or automatic safety devices
- F22B37/421—Arrangements for detecting leaks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/42—Applications, arrangements, or dispositions of alarm or automatic safety devices
- F22B37/47—Applications, arrangements, or dispositions of alarm or automatic safety devices responsive to abnormal temperature, e.g. actuated by fusible plugs
Abstract
The present invention relates to a kind of three impulses leakage of boiler tubes alarm control method and system：Method part includes obtaining the leakage signal of the deviation of boiler feedwater flow and steam (vapor) outlet flow, the temperature change value of generator tube outer wall setting position, and leak detecting device as three impulses signal；The temperature change value of the generator tube outer wall setting position includes：The two-end-point of setpoint distance section on generator tube outer wall vertical direction is taken, upper extreme point and lower extreme point is designated as, the temperature change value in upper extreme point and lower extreme point certain hour is obtained respectively；Logical calculated is carried out according to above-mentioned three impulses signal, if boiler feedwater flow is more than the first setting value with the deviation of steam (vapor) outlet flow；Or the temperature change value of upper extreme point shows as temperature rise, and temperature rise is more than the second setting value, while the temperature change value of lower extreme point shows as temperature drop, and temperature drop also greater than the second setting value；Or leak detecting device sends leakage signal, then judge that generator tube is leaked, output alarm signal.
Description
Technical field
The present invention relates to a kind of three impulses leakage of boiler tubes alarm control system and method.
Background technology：
Boiler is the important pressure vessel for being related to production and life, and its safe operation is significant.And generator tube
Leakage or explosion are again recurrent phenomenons, are such as found not in time, the boiler around the high temperature and high pressure steam meeting blow loss of leakage
Tube bank, can lead to major accident when serious, therefore find that furnace tube leakage is the key link for avoiding fault spread in advance.
Conventional leakage warning device is generally equipped with boiler at present, warning device is a voice detector, used
In the sound that detection leakage of boiler tubes is produced, but the noise due to boiler combustion generation and larger, the conventional leakage of background sound
Warning device：Voice detector does not often realize finding in advance the purpose of furnace tube leakage.
The content of the invention：
For the deficiencies in the prior art, the invention provides a kind of three impulses leakage of boiler tubes controlling alarm side
Method, the method can precisely be detected to furnace tube leakage position, early warning be carried out exactly, it is to avoid unit pipe explosion accident enters one
Step expands.
The present invention uses following technical scheme：
A kind of three impulses leakage of boiler tubes alarm control method, including：
Obtain the deviation of boiler feedwater flow and steam (vapor) outlet flow, the temperature change of generator tube outer wall setting position
Value, and leak detecting device leakage signal as three impulses signal；The temperature of the generator tube outer wall setting position becomes
Change value includes：The two-end-point of setpoint distance section on generator tube outer wall vertical direction is taken, upper extreme point and lower extreme point is designated as, obtained respectively
Take the temperature change value in upper extreme point and lower extreme point certain hour；
Logical calculated is carried out according to above-mentioned three impulses signal, if boiler feedwater flow is more than with the deviation of steam (vapor) outlet flow
First setting value；Or the temperature change value of upper extreme point shows as temperature rise, and temperature rise is more than the second setting value, while the temperature of lower extreme point
Degree changing value shows as temperature drop, and temperature drop also greater than the second setting value；Or leak detecting device sends leakage signal, then judge pot
Stove boiler tube is leaked, output alarm signal.
Further, if the temperature change value of upper extreme point shows as temperature rise, and temperature rise is more than the 3rd setting value, while lower end
The temperature change value of point shows as temperature drop, and temperature drop is more than the 4th setting value, then judge that generator tube is leaked.
Further, according to water balance is theoretical and heat transfer theory is calculated the first setting value, the second setting value, the 3rd set
Definite value and the 4th setting value.
Further, the temperature change value at the multiple tested points centered on upper extreme point is obtained, its average value conduct is taken
The average temperature variation value of upper extreme point；The temperature change value at the multiple tested points centered on lower extreme point is obtained simultaneously, takes it
Average value as lower extreme point average temperature variation value.
The invention allows for a kind of three impulses leakage of boiler tubes alarm control system of use above method, including：
The setting position of generator tube outer wall is provided with temperature detecting unit, the temperature detecting unit is arranged on boiler
The upper extreme point and lower extreme point of setpoint distance section on furnace tube outer wall vertical direction；
Boiler feedwater end is provided with current amount detection unit；
The steam (vapor) outlet end of boiler is provided with steam flowrate testing unit；
By the voice detector for detecting furnace tube leakage sound；
Logic module, its input and the temperature detecting unit, current amount detection unit, steam flowrate testing unit harmony
The output of sound detector is connected, and the first setting value is more than for the deviation when boiler feedwater flow and steam (vapor) outlet flow；Or on
The temperature change value of end points shows as temperature rise, and temperature rise is more than the second setting value, while the temperature change value of lower extreme point shows as
Temperature drop, and temperature drop is also greater than the second setting value；Or leak detecting device sends leakage signal, then judge that generator tube is let out
Leakage, output alarm signal；
Computer, is connected with the logic module, obtains alarm control signal, exports warning message.
Further, the logic module includes the first spacing logic unit, for obtaining upper extreme point and lower extreme point temperature
The testing result of detection unit, and export logical value；Second spacing logic unit, for obtaining steam flowrate testing unit and steaming
The testing result of steam flow amount detection unit, and export logical value；Logic or unit, for obtaining the described first spacing logic unit
The logical value of output, the logical value of the second spacing logic unit output and voice detector send leakage signal logical value, defeated
Go out alarm control signal.
Further, the first spacing logic unit includes upper extreme point logic position-limiting unit and lower extreme point logic position-limiting unit,
Upper extreme point logic position-limiting unit is provided with the 3rd setting value, the testing result for obtaining upper extreme point temperature detecting unit, and defeated
Go out logical value；Lower extreme point logic position-limiting unit is provided with the 4th setting value, the detection for obtaining lower extreme point temperature detecting unit
As a result, and logical value is exported.
Further, temperature detecting unit is provided with the multiple tested points centered on upper extreme point, each temperature detection list
The output of unit is connected with the first controller, for calculating its average temperature variation value；Multiple tested points centered on lower extreme point
Place is provided with temperature detecting unit, and the output of each temperature detecting unit is connected with second controller, for calculating its mean temperature
Changing value.
Further, the temperature detecting unit uses SMD temperature detector.
Further, the warning message is transported to operator's website by computer.
Beneficial effects of the present invention：
Three impulses generator tube alarm method and system that the present invention is provided, can accurate early warning premature leak, and can be to pot
Stove furnace tube leakage degree carries out Quantitative Monitoring, is directly displayed on operator station picture, reminds operations staff to be examined to scene in time
Look into furnace tube leakage particular location and the booster order of severity, it is to avoid fault spread.The present invention according to water balance is theoretical and heat transfer theory,
By measuring and calculating feedwater flow and steam flow deviation, tube wall temperature rate of change (temperature rise or temperature drop) and voice detector
The three impulses of signal, synthetic determination leakage of boiler tubes situation, output furnace tube leakage alarm signal to operator station reminds operation
Personnel can effectively play the alarm mesh of leakage of boiler tubes to site inspection furnace tube leakage particular location and the booster order of severity
's.
Brief description of the drawings
Fig. 1 is three impulses leakage of boiler tubes warning system schematic diagram of the present invention.
1- temperature points；2- current measuring points, 3- steam flow measuring points；4- leak detections point；
Specific embodiment
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
Be also intended to include plural form, additionally, it should be understood that, when in this manual use term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
It is as shown in Figure 1 a kind of exemplary embodiments of the invention, three impulses leakage of boiler tubes alarm control system, bag
Include：
The setting position of generator tube outer wall is provided with some temperature points 1, some temperature points 1 are arranged on Boiler Furnace
The upper extreme point and lower extreme point of setpoint distance section on pipe outer wall vertical direction；Boiler feedwater end is provided with current measuring point 2；In pot
The steam (vapor) outlet end of stove is provided with steam flow measuring point 3；By detecting the voice detector of furnace tube leakage sound, i.e., some leakages
Monitoring point 4；Logic module, its input and some temperature points 1, current measuring point 2, steam flow measuring point 3 and some leakage prisons
The output of measuring point 4 is connected, and the first setting value is more than for the deviation when boiler feedwater flow and steam (vapor) outlet flow；Or upper extreme point
Temperature change value show as temperature rise, and temperature rise is more than the second setting value, while the temperature change value of lower extreme point shows as temperature drop,
And temperature drop is also greater than the second setting value；Or leak detecting device sends leakage signal, then judge that generator tube is leaked, and is exported
Alarm signal.
Logic module includes the first spacing logic unit, the detection for obtaining upper extreme point and lower extreme point temperature detecting unit
As a result, and logical value is exported；First spacing logic unit includes upper extreme point logic position-limiting unit and lower extreme point logic position-limiting unit,
Upper extreme point logic position-limiting unit is provided with the 3rd setting value, the testing result for obtaining upper extreme point temperature detecting unit, and defeated
Go out logical value；Lower extreme point logic position-limiting unit is provided with the 4th setting value, the detection for obtaining lower extreme point temperature detecting unit
As a result, and logical value is exported；Second spacing logic unit, for obtaining steam flowrate testing unit and steam flowrate testing unit
Testing result, and export logical value；Logic or unit, for obtain the described first spacing logic unit output logical value,
The logical value and voice detector of the second spacing logic unit output send leakage signal logical value, output controlling alarm letter
Number.
In the present embodiment, upper extreme point logic position-limiting unit is designated as thermal module (△ T1), lower extreme point logic position-limiting unit note
It is thermal module (△ T2), if there is furnace tube leakage at A, then the tube wall temperature at T2 can be substantially increased due to flow
And drastically decline, and the tube wall temperature at T1 can steeply rise because of water shortage, the temperature rise rate meeting at temperature drop rate and T1 at T2
It is substantially increased；Rate of temperature change is calculated by thermal module (△ T1), (△ T2), if thermal module (△ T1) shows as temperature drop,
And temperature drop is more than the 3rd setting value, while thermal module (△ T2) shows as temperature rise, and temperature rise is more than the 4th setting value, then judge
Generator tube is leaked.
In the present embodiment, boiler feedwater flow is designated as flow F1, and steam (vapor) outlet flow is designated as flow F2, if to maintain machine
Group load or steam flow of boiler, but there occurs leakage of boiler tubes, then flow F1 can abnormally be more than F2, by flow mould
Block calculated flow rate deviation △ F, if greater than the first setting value, you can judge furnace tube leakage.
In addition, also there is input all the way to detect the sound of furnace tube leakage sound for the logic or module (△ Q) of the present embodiment
Detector, the present embodiment is by the deviation of boiler feedwater flow and steam (vapor) outlet flow, the temperature of generator tube outer wall setting position
Changing value, and the leakage signal of voice detector is believed as three impulses signal as the above-mentioned three impulses of input of logic or module
Any signal triggering in number, you can trigger alarm.
In the present embodiment, also with computer, it is connected with the logic module (△ Q), obtains alarm control signal,
Output warning message.Finally, above-mentioned alarm signal is transported to operator station by computer, reminds operations staff to site inspection stove
Pipe leaks particular location and the booster order of severity, can effectively play the alarm purpose of leakage of boiler tubes.
In the present embodiment, temperature detecting point can also be provided with the multiple tested points centered on upper extreme point, each temperature
The output for spending test point is connected with the first controller, for calculating its average temperature variation value；Many centered on lower extreme point
Temperature spot is provided with individual tested point, the output of each temperature detecting point is connected with second controller, for calculating its mean temperature
Changing value.
SMD temperature detector is used at temperature detecting point, can effectively fit generator tube outer wall.
This warning system of the present embodiment, according to water balance is theoretical and heat transfer theory is calculated the first setting value, the
Two setting values, the 3rd setting value and the 4th setting value, by measuring and calculating feedwater flow and steam flow deviation, tube wall temperature
The three impulses such as rate of change (temperature rise or temperature drop) and voice detector signal, by flow module (△ F), thermal module (△ T)
With logic module (△ Q) synthetic determination leakage of boiler tubes situation, output furnace tube leakage alarm signal to operator station, prompting fortune
Administrative staff is to site inspection furnace tube leakage particular location and the booster order of severity, it is to avoid fault spread.
One more embodiment of the present invention is a kind of three impulses leakage of boiler tubes alarm control method, and specific the method is adopted
With following step：
Obtain the deviation of boiler feedwater flow and steam (vapor) outlet flow, the temperature change of generator tube outer wall setting position
Value, and leak detecting device leakage signal as three impulses signal；The temperature of the generator tube outer wall setting position becomes
Change value includes：The two-end-point of setpoint distance section on generator tube outer wall vertical direction is taken, upper extreme point and lower extreme point is designated as, obtained respectively
Take the temperature change value in upper extreme point and lower extreme point certain hour；
Logical calculated is carried out according to above-mentioned three impulses signal, if boiler feedwater flow is more than with the deviation of steam (vapor) outlet flow
First setting value；Or the temperature change value of upper extreme point shows as temperature rise, and temperature rise is more than the second setting value, while the temperature of lower extreme point
Degree changing value shows as temperature drop, and temperature drop also greater than the second setting value；Or leak detecting device sends leakage signal, then judge pot
Stove boiler tube is leaked, output alarm signal.
First setting value, the second setting value are calculated according to water balance theory and heat transfer theory.The present embodiment it is beneficial
Effect be it is simple and clear must obtain temperature rise or temperature drop, using unification judge standard, i.e. temperature rise or temperature drop absolute change value it is equal
During more than the second setting value, triggering alarm is adopted, using the method for this embodiment, the threshold of warning message slightly has raising, but
Implementation procedure simplifies, beneficial to practical operation.
Improved as the one kind to above-described embodiment, if the temperature change value of upper extreme point shows as temperature rise, and temperature rise is more than
3rd setting value, while the temperature change value of lower extreme point shows as temperature drop, and temperature drop is more than the 4th setting value, then judge Boiler Furnace
Pipe is leaked.According to water balance is theoretical and heat transfer theory be calculated the first setting value, the second setting value, the 3rd setting value and
4th setting value.
The beneficial effect of the present embodiment be it is simple to generator tube than temperature rise or temperature drop judge respectively, that is, set the
Three setting values and the 4th setting value, if the temperature change value of upper extreme point shows as temperature rise, and temperature rise is more than the 3rd setting value, while
The temperature change value of lower extreme point shows as temperature drop, and temperature drop is more than the 4th setting value, then triggering alarm, using this embodiment
Method, warning message has more really reacted actual leakage of boiler tubes situation, can equally reach and effectively remind operation
Personnel are to site inspection furnace tube leakage particular location and the booster order of severity, it is to avoid the effect of fault spread.
Improved as the one kind to above-described embodiment, the temperature at the multiple tested points centered on upper extreme point can be obtained
Changing value, takes average temperature variation value of its average value as upper extreme point；Obtain simultaneously multiple to be measured centered on lower extreme point
Temperature change value at point, takes average temperature variation value of its average value as lower extreme point.Can more be defined in this way
True judgement furnace tube leakage.
The three impulses generator tube alarm method that the present embodiment is provided, can accurate early warning premature leak, and can be to Boiler Furnace
Pipe leakiness carries out Quantitative Monitoring, is directly displayed on operator station picture, and operations staff to site inspection stove is reminded in time
Pipe leaks particular location and the booster order of severity, it is to avoid fault spread.The present invention passes through according to water balance theory and heat transfer theory
Measurement and calculating feedwater flow and steam flow deviation, tube wall temperature rate of change (temperature rise or temperature drop) and voice detector signal
Three impulses, synthetic determination leakage of boiler tubes situation, output furnace tube leakage alarm signal to operator station, prompting operations staff
To site inspection furnace tube leakage particular location and the booster order of severity, the alarm purpose of leakage of boiler tubes can be effectively played
The preferred embodiment of the application is the foregoing is only, the application is not limited to, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of three impulses leakage of boiler tubes alarm control method：It is characterized in that：
The deviation of acquisition boiler feedwater flow and steam (vapor) outlet flow, the temperature change value of generator tube outer wall setting position, with
And the leakage signal of leak detecting device is used as three impulses signal；The temperature change value bag of the generator tube outer wall setting position
Include：The two-end-point of setpoint distance section on generator tube outer wall vertical direction is taken, upper extreme point and lower extreme point is designated as, upper end is obtained respectively
Temperature change value in point and lower extreme point certain hour；
Logical calculated is carried out according to above-mentioned three impulses signal, if boiler feedwater flow is more than first with the deviation of steam (vapor) outlet flow
Setting value；Or the temperature change value of upper extreme point shows as temperature rise, and temperature rise is more than the second setting value, while the temperature of lower extreme point becomes
Change value shows as temperature drop, and temperature drop also greater than the second setting value；Or leak detecting device sends leakage signal, then judge Boiler Furnace
Pipe is leaked, output alarm signal.
2. method according to claim 1, it is characterised in that：If the temperature change value of upper extreme point shows as temperature rise, and temperature
Rise and be more than the 3rd setting value, while the temperature change value of lower extreme point shows as temperature drop, and temperature drop is more than the 4th setting value, then judge
Generator tube is leaked.
3. method according to claim 2, it is characterised in that：First is calculated according to water balance theory and heat transfer theory
Setting value, the second setting value, the 3rd setting value and the 4th setting value.
4. method according to claim 1, it is characterised in that：Obtain the temperature at the multiple tested points centered on upper extreme point
Degree changing value, takes average temperature variation value of its average value as upper extreme point；The multiple centered on lower extreme point is obtained simultaneously to treat
Temperature change value at measuring point, takes average temperature variation value of its average value as lower extreme point.
5. the three impulses leakage of boiler tubes alarm control system of a kind of use claim 1, it is characterised in that including：
The setting position of generator tube outer wall is provided with temperature detecting unit, the temperature detecting unit is arranged on generator tube
The upper extreme point and lower extreme point of setpoint distance section on outer wall vertical direction；
Boiler feedwater end is provided with current amount detection unit；
The steam (vapor) outlet end of boiler is provided with steam flowrate testing unit；
By the voice detector for detecting furnace tube leakage sound；
Logic module, its input is examined with the temperature detecting unit, current amount detection unit, steam flowrate testing unit and sound
The output for surveying instrument is connected, and the first setting value is more than for the deviation when boiler feedwater flow and steam (vapor) outlet flow；Or upper extreme point
Temperature change value show as temperature rise, and temperature rise is more than the second setting value, while the temperature change value of lower extreme point shows as temperature drop,
And temperature drop is also greater than the second setting value；Or leak detecting device sends leakage signal, then judge that generator tube is leaked, and is exported
Alarm signal；
Computer, is connected with the logic module, obtains alarm control signal, exports warning message.
6. system according to claim 5, it is characterised in that：The logic module includes the first spacing logic unit, uses
In acquisition upper extreme point and the testing result of lower extreme point temperature detecting unit, and export logical value；Second spacing logic unit, is used for
The testing result of steam flowrate testing unit and steam flowrate testing unit is obtained, and exports logical value；Logic or unit, are used for
Obtain logical value, the logical value and sound detection of the second spacing logic unit output of the described first spacing logic unit output
Instrument sends leakage signal logical value, exports alarm control signal.
7. system according to claim 6, it is characterised in that：First spacing logic unit includes the spacing list of upper extreme point logic
Unit and lower extreme point logic position-limiting unit, upper extreme point logic position-limiting unit is provided with the 3rd setting value, for obtaining upper extreme point temperature
The testing result of detection unit, and export logical value；Lower extreme point logic position-limiting unit is provided with the 4th setting value, under acquisition
The testing result of end point temperatures detection unit, and export logical value.
8. system according to claim 5, it is characterised in that：Temperature is provided with multiple tested points centered on upper extreme point
Detection unit, the output of each temperature detecting unit is connected with the first controller, for calculating its average temperature variation value；Below
Temperature detecting unit is provided with multiple tested points centered on end points, the output of each temperature detecting unit is connected with the second control
Device, for calculating its average temperature variation value.
9. system according to claim 5, it is characterised in that：The temperature detecting unit uses SMD temperature detection
Device.
10. system according to claim 5, it is characterised in that：The warning message is transported to operation by computer
Member's website.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710170745.6A CN106918033A (en) | 2017-03-21 | 2017-03-21 | Three impulses leakage of boiler tubes alarm control system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710170745.6A CN106918033A (en) | 2017-03-21 | 2017-03-21 | Three impulses leakage of boiler tubes alarm control system and method |
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| CN106918033A true CN106918033A (en) | 2017-07-04 |
Family
ID=59460587
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|---|---|---|---|
| CN201710170745.6A Pending CN106918033A (en) | 2017-03-21 | 2017-03-21 | Three impulses leakage of boiler tubes alarm control system and method |
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| CN114484409A (en) * | 2022-02-22 | 2022-05-13 | 北京博数智源人工智能科技有限公司 | Early warning method and device for furnace tube leakage accident of thermal power plant |
| CN114623990A (en) * | 2020-12-14 | 2022-06-14 | 阿里巴巴集团控股有限公司 | Monitoring and leakage positioning method, equipment, boiler, system and storage medium |
| CN116481742A (en) * | 2023-06-21 | 2023-07-25 | 佛山市天禄智能装备科技有限公司 | Lithium battery rotary kiln sealing leakage detection system and method |
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| CN116481742A (en) * | 2023-06-21 | 2023-07-25 | 佛山市天禄智能装备科技有限公司 | Lithium battery rotary kiln sealing leakage detection system and method |
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