CN110526542A - A kind of temperature control system and method suitable for heated air drier - Google Patents
A kind of temperature control system and method suitable for heated air drier Download PDFInfo
- Publication number
- CN110526542A CN110526542A CN201910717205.4A CN201910717205A CN110526542A CN 110526542 A CN110526542 A CN 110526542A CN 201910717205 A CN201910717205 A CN 201910717205A CN 110526542 A CN110526542 A CN 110526542A
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- CN
- China
- Prior art keywords
- temperature
- value
- heated air
- inlet temperature
- air drier
- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/025—Air heaters with forced circulation using fluid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2064—Arrangement or mounting of control or safety devices for air heaters
- F24H9/2085—Arrangement or mounting of control or safety devices for air heaters using fluid fuel
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- General Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a kind of temperature control systems and method dry suitable for hot air type, by the difference for detecting outlet temperature and set temperature, operation obtains an inlet temperature in a section, the timely impulsive when temperature is insufficient or excessive, controlling burner aperture maintains inlet temperature consistent with the inlet temperature calculated, prevents inlet temperature to fluctuate excessive and cause to outlet temperature biggish unstable, greatly improves the thermal efficiency, reduce fuel usage amount, reduces costs.
Description
Technical field
The present invention relates to automation field more particularly to a kind of temperature control systems and side suitable for heated air drier
Method.
Background technique
Currently, sludge is dehydrated by the mechanical presses mode such as centrifuge, filter press mostly, moisture content still 70% or more,
It is aqueous more, if carrying out second dehydration by other equipment again, it can obviously reduce its weight, family is not used only reduces processing
The cost of sludge, while the processing pressure that sludge subsequent processing such as burns process section is alleviated, generally use air drier
To carry out second dehydration.
But the hot wind of steady temperature is introduced furnace body and material carries out by existing air drier to control the temperature of hot-blast stove
Heat exchange, it is unstable that this mode will appear drying efficiency, needs artificial regular check discharging moisture content and adjusts charging rate,
This reduces the thermal efficiency but also partial heat is wasted.Control outlet temperature can guarantee the moisture content of discharging without biggish
Fluctuation, but due to beginning to warm up from hot-blast stove to outlet temperature, there is biggish time delay and more disturbing factor, be easy to lead
Outlet temperature virtual height caused by pyrogenicity wind furnace overtemperature or temperature are too low.
Summary of the invention
The object of the present invention is to provide a kind of temperature control systems and method suitable for heated air drier, being capable of stabilization of export
Temperature improves the thermal efficiency, reduces fuel usage amount, reduces cost.
For achieving the above object, the technical scheme is that a kind of temperature control system suitable for heated air drier
System, including hot-blast stove, drying machine, inlet temperature sensor, outlet temperature sensor, processing module and output module, feature
Be: the inlet temperature sensor and outlet temperature sensor are separately mounted to the inlet and outlet of drying machine, it is described into
Mouth temperature sensor and outlet temperature sensor pass through A/D conversion module respectively and temperature signal are input to processing module, described
Processing module exports processing result signal to output module, and output module outputs a control signal to the burner of hot-blast stove.
Further, the processing module is connected with a HMI man-machine interface.
Further, the processing module is PLC programmable logic controller (PLC).
When operation, inlet temperature sensor, outlet temperature sensor acquire the reality of drying machine import, outlet temperature respectively
Value, is input to processing module after the analogue value is converted into digital quantity by A/D conversion module, processing module is defeated according to computation model
Processing consequential signal outputs a control signal to the burner of hot-blast stove, controls opening for burner to output module, output module out
Degree；During this, the phase in current setting value, calculated value and modification calculating process can be checked by HMI man-machine interface
Close the setting of parameter.
The present invention also provides a kind of temperature control methods suitable for heated air drier, comprising: step 1 acquires drying
The actual value of machine outlet temperature；
Step 2 compares the setting value of outlet temperature and the deviation of actual value, is calculated the hundred of one 0% to 100% by PI
Fractional value；
The setting value of drying machine inlet temperature is divided into the lesser section of several ranges, step 2 is calculated by step 3
Ratio be converted into the setting value of the inlet temperature in current interval；
Step 4, when the percent value that step 2 operation obtains persistently is higher than 95% or lower than 5%, then switches the setting of inlet temperature
The section of value；
Step 5 acquires the actual value of drying machine inlet temperature；
Step 6 compares the setting value of inlet temperature and the deviation of actual value, is calculated the hundred of one 0% to 100% by PI
Fractional value；
The percent value being calculated in step 6 is used to control the burner aperture of hot-blast stove by step 7.
Further, the setting value of drying machine import hot blast temperature is according to every 100 DEG C of interval divisions in step 3
Several sections；The parameter of PID is (5,60,0) in step 2；The parameter of PID is (3,180,0) in step 6.
The beneficial effects of the present invention are: by the difference of detection outlet temperature and set temperature, in the area every 100 DEG CYi Ge
Interior operation obtains an inlet temperature, the timely impulsive when temperature is insufficient or excessive, control burner aperture maintain into
Mouth temperature is consistent with the inlet temperature calculated, prevents inlet temperature fluctuation excessive and causes biggish shakiness to outlet temperature
It is fixed, the thermal efficiency is greatly improved, reduces fuel usage amount, reduces costs.
Detailed description of the invention
Fig. 1 is the temperature control system structural schematic diagram suitable for heated air drier of the embodiment of the present invention.
Specific embodiment
Below in conjunction with attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.
Embodiment 1:
As shown in figure, a kind of temperature control system suitable for heated air drier, including hot-blast stove, drying machine, inlet temperature pass
Sensor 11, outlet temperature sensor 12, processing module and output module 3, inlet temperature sensor 11 and outlet temperature sensor
12 are separately mounted to the inlet and outlet of drying machine, and inlet temperature sensor 11 and outlet temperature sensor 12 pass through A/ respectively
Temperature signal is input to processing module 3 by D conversion module 2, and processing module 3 exports processing result signal to output module 5, output
Module 5 outputs a control signal to the burner 6 of hot-blast stove, and processing module 3 is also connected with a HMI man-machine interface 4, processing module 3
For PLC programmable logic controller (PLC).
When operation, inlet temperature sensor 11, outlet temperature sensor 12 respectively acquire drying machine import, outlet temperature
Actual value is input to processing module 3 after the analogue value is converted into digital quantity by A/D conversion module 2, and processing module 3 is according to meter
It calculates model and exports processing result signal to output module 5, output module 5 outputs a control signal to the burner 6 of hot-blast stove, controls
The aperture of burner 6；During this, current setting value, calculated value and modification meter can be checked by HMI man-machine interface 4
The setting of relevant parameter during calculation.
A kind of temperature control method suitable for heated air drier of the embodiment of the present invention, comprising: step 1 acquires drying
The actual value of machine outlet temperature；
Step 2 compares the setting value of outlet temperature and the deviation of actual value, is calculated the hundred of one 0% to 100% by PI
Fractional value；
The setting value of drying machine inlet temperature is divided into the lesser section of several ranges, step 2 is calculated by step 3
Ratio be converted into the setting value of the inlet temperature in current interval；
Step 4, when the percent value that step 2 operation obtains persistently is higher than 95% or lower than 5%, then switches the setting of inlet temperature
The section of value；
Step 5 acquires the actual value of drying machine inlet temperature；
Step 6 compares the setting value of inlet temperature and the deviation of actual value, is calculated the hundred of one 0% to 100% by PI
Fractional value；
The percent value being calculated in step 6 is used to control the burner aperture of hot-blast stove by step 7.
Wherein, in step 3 drying machine import hot blast temperature setting value according to every 100 DEG C of interval divisions be it is several
A section；The parameter of PID is (5,60,0) in step 2；The parameter of PID is (3,180,0) in step 6.
With 600 ~ 900 DEG C, every 100 DEG C points sections, for interval range is 700 ~ 800 DEG C at present: if inlet temperature
Be more than 800 DEG C when highest, outlet temperature cannot persistently reach setting value, the percentages that PID arithmetic obtains in step 2 by
95%, and last for several minutes are gradually increased above, then switches the section of inlet temperature to 800 ~ 900 DEG C；If inlet temperature is minimum
Lower than 700 DEG C, outlet temperature is continued above setting value, and the percentages that PID arithmetic obtains in step 2 are gradually decrease to low
In 5%, and last for several minutes, then switch the section of inlet temperature to 600 ~ 700 DEG C.
Described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Claims (7)
1. a kind of temperature control system suitable for heated air drier, burner, drying machine, inlet temperature sensing including hot-blast stove
Device, outlet temperature sensor, processing module and output module, it is characterised in that: the inlet temperature sensor and outlet temperature
Sensor is separately mounted to the inlet and outlet of drying machine, and the inlet temperature sensor and outlet temperature sensor lead to respectively
It crosses A/D conversion module and temperature signal is output to processing module, the processing module exports processing result signal to output module,
Output module outputs a control signal to the burner of hot-blast stove.
2. a kind of temperature control system suitable for heated air drier according to claim 1, it is characterised in that: the processing
Module is connected with a HMI man-machine interface.
3. a kind of temperature control system suitable for heated air drier according to claim 1, it is characterised in that: the processing
Module is PLC programmable logic controller (PLC).
4. a kind of temperature control method suitable for heated air drier, it is characterised in that: it include: step 1, the outlet of acquisition drying machine
The actual value of temperature；
Step 2 compares the setting value of outlet temperature and the deviation of actual value, is calculated the hundred of one 0% to 100% by PID
Fractional value；
The setting value of drying machine inlet temperature is divided into the lesser section of several ranges, step 2 is calculated by step 3
Ratio be converted into the setting value of the inlet temperature in current interval；
Step 4, when the percent value that step 2 operation obtains persistently is higher than 95% or lower than 5%, then switches the setting of inlet temperature
The section of value；
Step 5 acquires the actual value of drying machine inlet temperature；
Step 6 compares the setting value of inlet temperature and the deviation of actual value, is calculated the hundred of one 0% to 100% by PID
Fractional value；
The percent value being calculated in step 6 is used to control the burner aperture of hot-blast stove by step 7.
5. a kind of temperature control method suitable for heated air drier according to claim 4, it is characterised in that: in step 3
The setting value of drying machine import hot blast temperature is several sections according to every 100 DEG C of interval divisions.
6. a kind of temperature control method suitable for heated air drier according to claim 4, it is characterised in that: in step 2
The parameter of PID is (5,60,0).
7. a kind of temperature control method suitable for heated air drier according to claim 4, it is characterised in that: in step 6
The parameter of PID is (3,180,0).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910717205.4A CN110526542A (en) | 2019-08-05 | 2019-08-05 | A kind of temperature control system and method suitable for heated air drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910717205.4A CN110526542A (en) | 2019-08-05 | 2019-08-05 | A kind of temperature control system and method suitable for heated air drier |
Publications (1)
| Publication Number | Publication Date |
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| CN110526542A true CN110526542A (en) | 2019-12-03 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910717205.4A Pending CN110526542A (en) | 2019-08-05 | 2019-08-05 | A kind of temperature control system and method suitable for heated air drier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113248108A (en) * | 2021-06-28 | 2021-08-13 | 仁天环保科技有限责任公司 | Integrated sludge treatment control system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2643497A1 (en) * | 1976-09-23 | 1978-04-06 | Thorn Domestic Appliances Ltd | Air drier with chamber for drying objects - has sensors detecting chamber outlet and ambient air temperature for regulating heat supply |
| CN101270543A (en) * | 2007-03-22 | 2008-09-24 | 株式会社东芝 | Washing-drying machine |
| CN101782316A (en) * | 2009-01-20 | 2010-07-21 | 北新集团建材股份有限公司 | Fuzzy control system of warm-air drier |
| CN204360174U (en) * | 2015-01-26 | 2015-05-27 | 河南工业大学 | The dry automatic control system of a kind of starch |
| CN106017050A (en) * | 2016-05-23 | 2016-10-12 | 北新集团建材股份有限公司 | Automatic temperature regulating system and method for hot air drier |
-
2019
- 2019-08-05 CN CN201910717205.4A patent/CN110526542A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2643497A1 (en) * | 1976-09-23 | 1978-04-06 | Thorn Domestic Appliances Ltd | Air drier with chamber for drying objects - has sensors detecting chamber outlet and ambient air temperature for regulating heat supply |
| CN101270543A (en) * | 2007-03-22 | 2008-09-24 | 株式会社东芝 | Washing-drying machine |
| CN101782316A (en) * | 2009-01-20 | 2010-07-21 | 北新集团建材股份有限公司 | Fuzzy control system of warm-air drier |
| CN204360174U (en) * | 2015-01-26 | 2015-05-27 | 河南工业大学 | The dry automatic control system of a kind of starch |
| CN106017050A (en) * | 2016-05-23 | 2016-10-12 | 北新集团建材股份有限公司 | Automatic temperature regulating system and method for hot air drier |
Non-Patent Citations (1)
| Title |
|---|
| 魏诗琴 等: "烘干机温度PID控制***及大红袍烘焙效果试验", 《茶叶科学》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113248108A (en) * | 2021-06-28 | 2021-08-13 | 仁天环保科技有限责任公司 | Integrated sludge treatment control system and method |
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Application publication date: 20191203 |