CN109688638A - The automatic control system and control method of plural serial stage electric heater unit - Google Patents
The automatic control system and control method of plural serial stage electric heater unit Download PDFInfo
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- CN109688638A CN109688638A CN201811571645.5A CN201811571645A CN109688638A CN 109688638 A CN109688638 A CN 109688638A CN 201811571645 A CN201811571645 A CN 201811571645A CN 109688638 A CN109688638 A CN 109688638A
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- 238000000034 method Methods 0.000 title claims description 10
- 238000005485 electric heating Methods 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 238000012544 monitoring process Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- FPIPGXGPPPQFEQ-OVSJKPMPSA-N all-trans-retinol Chemical compound OC\C=C(/C)\C=C\C=C(/C)\C=C\C1=C(C)CCCC1(C)C FPIPGXGPPPQFEQ-OVSJKPMPSA-N 0.000 claims 2
- 235000019169 all-trans-retinol Nutrition 0.000 claims 1
- 239000011717 all-trans-retinol Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000004093 laser heating Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
Abstract
The invention belongs to the control technology of electric heating equipment, the automatic control system of specifically a kind of plural serial stage electric heater unit.The system includes multistage electric heating unit, and every level-one electric heating unit is made of electric heater, power controller, overtemperature prote module, overtemperture control PID arithmetic module, several parts of power control computing module；The detection output of the outlet detection module in exit is connected to one outlet Control PID computing module；In every level-one, overtemperature prote module detection temperature exports to overtemperture control PID arithmetic module and is compared operation with warm setting value；Operation result output end is connected to an input terminal of power control computing module, and from the result output end of the control of export PID arithmetic module, power control computing module is exported to power controller another input end signal of power control computing module.It is long that the present invention can stablize promotion outlet heating temperature, control precision height, service life.
Description
Technical field
The invention belongs to the control technology of electric heating equipment, the automation control of specifically a kind of plural serial stage electric heater unit
System processed.
Background technique
Resistance-type continuous heating is for carrying out multistage laser heating to medium, to reach the electricity of ultra-high temperature requirement
Heating system generally includes the electric heating unit of plural serial stage, is heated to heated medium during circulating step by step
Ultra-high temperature.The control system of existing multistage electric heater, generally all has the function of that overtemperature prote and temperature control the two；Respectively
Grade electric heating unit has respective overtemperature prote module, provides independent overtemperature prote for each electric heating unit, such as
Temperature is more than the same level electric heating unit temperature setting value in fruit unit, and corresponding electric heating unit must power off stopping heating；And it is warm
Degree control module usually acquires whole device final stage or outlet temperature, and the outlet temperature of itself and setting is carried out with pid algorithm
Comparison operation controls stablizing for outlet temperature with realizing using operation result as the power adjustment foundation of electric heating units at different levels
System.The usually respective independent operating of the two control processes.But for the electric heater of plural serial stage, due to inlet temperature and outlet
There is the very big temperature difference in temperature, under low discharge, heating time short operating condition, electric heating units at different levels can frequently touch protection temperature
Degree, frequent power-off protection make heated medium be difficult to heat up and stablize in 700 DEG C or more superhigh temperature.And overtemperature prote
Frequent movement is also unfavorable for improving the service life of equipment.
Summary of the invention
The technical problem to be solved by the invention is to provide one kind can stablize promotion outlet heating temperature, control precision
The automatic control system and control method of plural serial stage electric heater unit high, service life is long.
The automatic control system of plural serial stage electric heater unit of the invention includes multistage electric heating unit, every level-one electricity
Heating unit is by electric heater, power controller, overtemperature prote module, overtemperture control PID arithmetic module, power control operation mould
A few part compositions of block；
The electric heater of electric heating units at different levels is sequentially connected in series on heated medium landline, is gone out in the electric heater of final stage
It is provided with the outlet detection module for being able to detect medium outlet temperature at mouthful, the detection output for exporting detection module is connected to one
A control of export PID arithmetic module, and operation can be compared with the outlet temperature setting value of entire heating device；
In every level-one electric heating unit, power controller is used to control the heating power of electric heater；The setting of overtemperature prote module
In the electric heater of this grade, controlled for overtemperature prote；The overtemperature prote module is able to detect the practical temperature in monitoring region
It spends and exports to overtemperture control PID arithmetic module and be compared operation with the overtemperature setting value of the same level heater；The overtemperature
The operation result output end of Control PID computing module is connected to an input terminal of power control computing module, power control fortune
Another input end signal of module is calculated from the result output end of the control of export PID arithmetic module, power control operation
The operation result output end of module is exported to power controller.
Preferably, the electric heating unit has 4-8 grades.
Plural serial stage electric heater unit control method of the invention is based on above-mentioned apparatus, method includes the following steps:
A. the medium from entrance to output flow is heated by multistage electric heating unit, the electric heater in every level-one is logical
It crosses corresponding overtemperature prote module and overtemperature prote is carried out to it；
B. by the difference of the real-time monitoring temperature of every level-one electric heater and the overtemperature setting value of its same level electric heater in overtemperature
Calculate by pid algorithm in Control PID computing module and obtain a power regulation reference value, and exports to the power of the same level
Control computing module；The power that the more big then power regulation reference value instruction of the difference is adjusted is lower；
C. the difference of the detection temperature for exporting medium and outlet medium temperature setting value is led in control of export PID arithmetic module
It crosses pid algorithm to carry out calculating another power regulation reference value of acquisition, and exports to the power control computing module of every level-one；Institute
It is higher to state the power that the more big then power regulation reference value instruction of difference is adjusted；
D. in every level-one electric heating unit, the power of overtemperture control in future PID arithmetic module and control of export PID arithmetic module
It adjusts reference value and is overlapped operation in power control computing module, operation result exports to power controller, passes through
Power controller is adjusted the heating power of the same level electric heater.
In the step d, by the power regulation from overtemperture control PID arithmetic module and control of export PID arithmetic module
Reference value is overlapped operation according to the respective weight of setting.
Advantages of the present invention is embodied in: the acquisition to the power adjustment parameter of every level-one electric heater, with reference to total
The parameter of outlet temperature size and the parameter of the same level heater overtemperature state, thus it is steady both to have met medium in regulation power
Fixed heating requires, while avoiding electric heater is too fast from reaching overtemperature set temperature, reduces the frequency of overtemperature prote power-off, both mentioned
The high speed of heating, is easier to reach ultra-high temperature, also ensures the stability of outlet medium temperature, while extending protector
The service life of part.
Detailed description of the invention
Fig. 1 is the systematic schematic diagram of the embodiment of the present invention.
Specific embodiment
As shown, the automatic control system of the plural serial stage electric heater unit includes six grades of electric heating units, it is each
Grade electric heating unit is transported by electric heater, power controller, overtemperature prote module, overtemperture control PID arithmetic module, power control
Calculate a few part compositions of module；
The electric heater of electric heating units at different levels is sequentially connected in series on heated medium landline, according to from medium inlet to out
The sequence precedence of mouth is level-one electric heater to six grades of electric heaters, is provided with and is able to detect in the electric heater exit of final stage
The outlet detection module of medium outlet temperature T, the detection output for exporting detection module are connected to one outlet Control PID operation
Module, and operation can be compared with the outlet temperature setting value of entire heating device；
In every level-one electric heating unit, power controller is used to control the heating power of electric heater；The setting of overtemperature prote module
In the electric heater of this grade, controlled for overtemperature prote；Overtemperature prote module is able to detect the actual temperature in monitoring region simultaneously
Output is compared operation to overtemperture control PID arithmetic module and with the overtemperature setting value of the same level heater；Overtemperture control PID fortune
The operation result output end for calculating module is connected to an input terminal of power control computing module, power control computing module it is another
Result output end of one input end signal from the control of export PID arithmetic module, the operation of power control computing module
As a result output end is exported to power controller.
The operation method of above-mentioned apparatus the following steps are included:
A. the medium from entrance to output flow is heated by multistage electric heating unit, the electric heater in every level-one is logical
It crosses corresponding overtemperature prote module and overtemperature prote is carried out to it；
B. by the difference of the real-time monitoring temperature of every level-one electric heater and the overtemperature setting value of its same level electric heater in overtemperature
Calculate by pid algorithm in Control PID computing module and obtain a power regulation reference value, and exports to the power of the same level
Control computing module；The power that the more big then power regulation reference value instruction of the difference is adjusted is lower；
C. the difference of the detection temperature for exporting medium and outlet medium temperature setting value is led in control of export PID arithmetic module
It crosses pid algorithm to carry out calculating another power regulation reference value of acquisition, and exports to the power control computing module of every level-one；Institute
It is higher to state the power that the more big then power regulation reference value instruction of difference is adjusted；
D. in every level-one electric heating unit, the power of overtemperture control in future PID arithmetic module and control of export PID arithmetic module
It adjusts reference value and is overlapped operation according to the respective weight of setting in power control computing module, operation result is defeated
Out to power controller, it is adjusted by heating power of the power controller to the same level electric heater.
Claims (4)
1. a kind of automatic control system of plural serial stage electric heater unit, it is characterized in that:
Including multistage electric heating unit, every level-one electric heating unit is by electric heater, power controller, overtemperature prote module, super
A few part compositions of temperature control PID arithmetic module, power control computing module；
The electric heater of electric heating units at different levels is sequentially connected in series on heated medium landline, is gone out in the electric heater of final stage
It is provided with the outlet detection module for being able to detect medium outlet temperature at mouthful, the detection output for exporting detection module is connected to one
A control of export PID arithmetic module, and operation can be compared with the outlet temperature setting value of entire heating device；
In every level-one electric heating unit, power controller is used to control the heating power of electric heater；The setting of overtemperature prote module
In the electric heater of this grade, controlled for overtemperature prote；The overtemperature prote module is able to detect the practical temperature in monitoring region
It spends and exports to overtemperture control PID arithmetic module and be compared operation with the overtemperature setting value of the same level heater；The overtemperature
The operation result output end of Control PID computing module is connected to an input terminal of power control computing module, power control fortune
Another input end signal of module is calculated from the result output end of the control of export PID arithmetic module, power control operation
The operation result output end of module is exported to power controller.
2. the automatic control system of plural serial stage electric heater unit according to claim 1, it is characterized in that: the electricity adds
Hot cell has 4-8 grades.
3. a kind of plural serial stage electric heating using the automatic control system of plural serial stage electric heater unit described in claim 1
Apparatus control method, it is characterized in that: include the following steps,
A. the medium from entrance to output flow is heated by multistage electric heating unit, the electric heater in every level-one is logical
It crosses corresponding overtemperature prote module and overtemperature prote is carried out to it；
B. by the difference of the real-time monitoring temperature of every level-one electric heater and the overtemperature setting value of its same level electric heater in overtemperature
Calculate by pid algorithm in Control PID computing module and obtain a power regulation reference value, and exports to the power of the same level
Control computing module；The power that the more big then power regulation reference value instruction of the difference is adjusted is lower；
C. the difference of the detection temperature for exporting medium and outlet medium temperature setting value is led in control of export PID arithmetic module
It crosses pid algorithm to carry out calculating another power regulation reference value of acquisition, and exports to the power control computing module of every level-one；Institute
It is higher to state the power that the more big then power regulation reference value instruction of difference is adjusted；
D. in every level-one electric heating unit, the power of overtemperture control in future PID arithmetic module and control of export PID arithmetic module
It adjusts reference value and is overlapped operation in power control computing module, operation result exports to power controller, passes through
Power controller is adjusted the heating power of the same level electric heater.
4. plural serial stage electric heater unit control method according to claim 3, it is characterized in that: in step d, it will be from super
The power regulation reference value of temperature control PID arithmetic module and control of export PID arithmetic module according to setting respective weight into
Row superposition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811571645.5A CN109688638A (en) | 2018-12-21 | 2018-12-21 | The automatic control system and control method of plural serial stage electric heater unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811571645.5A CN109688638A (en) | 2018-12-21 | 2018-12-21 | The automatic control system and control method of plural serial stage electric heater unit |
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| CN109688638A true CN109688638A (en) | 2019-04-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112684772A (en) * | 2020-12-31 | 2021-04-20 | 贵阳振兴铝镁科技产业发展有限公司 | Thermal balance control system and method for dissolving out aluminum oxide |
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| CN103838188A (en) * | 2012-11-20 | 2014-06-04 | 中核建中核燃料元件有限公司 | UF6 vaporization automatic control system and control method thereof |
| US20150250025A1 (en) * | 2014-02-28 | 2015-09-03 | Siemens Aktiengesellschaft | Power module and interface module for a heating controller and/or regulator and a modular system for heating control and/or regulation |
| CN105098709A (en) * | 2015-07-01 | 2015-11-25 | 新誉轨道交通科技有限公司 | Electric heating overtemperature protection apparatus for air conditioner of motor train and protection method for protection apparatus |
| CN105807812A (en) * | 2014-12-30 | 2016-07-27 | 中核控制系统工程有限公司 | PID temperature control method and temperature control module |
| CN107270548A (en) * | 2017-08-08 | 2017-10-20 | 广东万家乐燃气具有限公司 | Overtemperature prote control system and electric heater |
-
2018
- 2018-12-21 CN CN201811571645.5A patent/CN109688638A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103838188A (en) * | 2012-11-20 | 2014-06-04 | 中核建中核燃料元件有限公司 | UF6 vaporization automatic control system and control method thereof |
| US20150250025A1 (en) * | 2014-02-28 | 2015-09-03 | Siemens Aktiengesellschaft | Power module and interface module for a heating controller and/or regulator and a modular system for heating control and/or regulation |
| CN105807812A (en) * | 2014-12-30 | 2016-07-27 | 中核控制系统工程有限公司 | PID temperature control method and temperature control module |
| CN105098709A (en) * | 2015-07-01 | 2015-11-25 | 新誉轨道交通科技有限公司 | Electric heating overtemperature protection apparatus for air conditioner of motor train and protection method for protection apparatus |
| CN107270548A (en) * | 2017-08-08 | 2017-10-20 | 广东万家乐燃气具有限公司 | Overtemperature prote control system and electric heater |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112684772A (en) * | 2020-12-31 | 2021-04-20 | 贵阳振兴铝镁科技产业发展有限公司 | Thermal balance control system and method for dissolving out aluminum oxide |
| CN112684772B (en) * | 2020-12-31 | 2024-05-03 | 贵阳振兴铝镁科技产业发展有限公司 | Heat balance control system and method for aluminum oxide dissolution |
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