CN209310530U - A kind of device that electrical kiln furnace temperature is adjusted - Google Patents
A kind of device that electrical kiln furnace temperature is adjusted Download PDFInfo
- Publication number
- CN209310530U CN209310530U CN201821955607.5U CN201821955607U CN209310530U CN 209310530 U CN209310530 U CN 209310530U CN 201821955607 U CN201821955607 U CN 201821955607U CN 209310530 U CN209310530 U CN 209310530U
- Authority
- CN
- China
- Prior art keywords
- temperature
- control circuit
- pid controller
- electrically connected
- kiln
- 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.)
- Active
Links
- 238000009529 body temperature measurement Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 229910021484 silicon-nickel alloy Inorganic materials 0.000 claims description 4
- 229910018487 Ni—Cr Inorganic materials 0.000 claims description 3
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010304 firing Methods 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- DBUTVDSHVUGWOZ-UHFFFAOYSA-N [Si].[Ni].[Cr].[Ni] Chemical compound [Si].[Ni].[Cr].[Ni] DBUTVDSHVUGWOZ-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000011022 operating instruction Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Landscapes
- Control Of Temperature (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Control Of Resistance Heating (AREA)
Abstract
The utility model discloses the devices that a kind of electrical kiln furnace temperature is adjusted, described device includes temperature sensor, IGBT trigger control circuit, PID controller and PWM modulation circuit, the temperature sensor is set in electric kiln, and is electrically connected with the IGBT trigger control circuit；The PID controller is electrically connected with the IGBT trigger control circuit；The PWM modulation circuit is electrically connected with the PID controller.The device can not only reduce the influence to grid power quality, while have the remarkable advantages such as precision is high, adjustable range is wide, control mode is simple.
Description
Technical field
The utility model relates to the devices that temperature control equipment technical field more particularly to a kind of electrical kiln furnace temperature are adjusted.
Background technique
With current economic society make rapid progress and city size continuous expansion, demand of the people to architectural pottery with
Day all increasings, the requirement to ceramic mass, kind are also higher and higher.In China, ceramic industry is not only traditional industry, and is labor
Dynamic intensity industry, into after 21st century, country pushes the development of equipment manufacture, therefore China's traditional ceramics manufacturing industry
Also fast-developing period is entered, ceramic kiln is the equipment for realizing ceramic firing system, in the ceramic system of modernization
During making, the ceramic kiln role that still performer holds the balance, the superiority and inferiority of ceramic product quality is heavily dependent on
The quality of firing process.Concrete technology condition includes calcining system, the reasonability of furnace construction, the quality of burning, combustion technology.
Calcining system be according to the technological requirements and in view of heat power engineering, economy etc. factor and the operating instruction formulated, practice card
Bright, firing is to guarantee the most important link of product quality, no matter which in stage, as long as kiln temperature deviates sintering curve mistake
Greatly, it just will affect the quality of product.
The traditional method of Ceramic production Control for Kiln Temperature is concentrated and is grasped by operator as unit of workshop or post
Make, is monitored by instrument, at present for advanced international standard, Production of Ceramics has entered comprehensive control of electronic computer
The temperature control in stage, kiln has also generallyd use computer control, and most common method is still regulatory PID control, including list
Circuit, loop in series and feedforward-feedback control etc. are all using PID as basic control algolithm, and improved method has Smith
Predictive compensation adds PID control and fuzzy-adaptation PID control etc..But since ceramic kiln temperature control system is one big inertia, pure stagnant
Afterwards and the variable-parameter system with strong nonlinearity feature, along with a variety of Coupled Variables such as temperature, atmosphere the problems such as, existing control
Device processed is difficult to meet the high performance requirements to kiln temperature control.
Summary of the invention
The purpose of the utility model is to provide the device that a kind of electrical kiln furnace temperature is adjusted, which can not only be reduced to electricity
The influence of network electric energy quality, while there are the remarkable advantages such as precision is high, adjustable range is wide, control mode is simple.
The purpose of this utility model is achieved through the following technical solutions:
A kind of device that electrical kiln furnace temperature is adjusted, described device includes temperature sensor, IGBT trigger control circuit, PID
Controller and PWM modulation circuit, in which:
The temperature sensor is set in electric kiln, and is electrically connected with the IGBT trigger control circuit；
The PID controller is electrically connected with the IGBT trigger control circuit；
The PWM modulation circuit is electrically connected with the PID controller.
The temperature sensor uses thermocouple sensor, and galvanic couple according to the requirement of temperature measurement range and measurement accuracy
Material selection nickel chromium triangle-nickel silicon alloy.
Above-mentioned apparatus can not only be reduced to power grid electric energy it can be seen from above-mentioned technical solution provided by the utility model
The influence of quality, while there is the remarkable advantages such as precision is high, adjustable range is wide, control mode is simple, fitness with higher.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the utility model
Example, for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other accompanying drawings.
Fig. 1 is the thermostatic structural schematic diagram of electric kiln described in the utility model embodiment.
Specific embodiment
Below with reference to the attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, belongs to the protection scope of the utility model.
The utility model embodiment is described in further detail below in conjunction with attached drawing, it is practical for this as shown in Figure 1
The thermostatic structural schematic diagram of electric kiln described in new embodiment, described device include temperature sensor, IGBT triggering
Control circuit, PID controller and PWM modulation circuit, wherein the connection relationship between each component specifically:
The temperature sensor is set in electric kiln, and is electrically connected with the IGBT trigger control circuit, for detecting
Temperature in the electric kiln and temperature signal that will test is converted into voltage signal ufedFeed back to the IGBT triggering control
Circuit；
The IGBT trigger control circuit is used for the voltage signal u that will be fed backfedWith reference voltage urefIt is compared to obtain
Deviation signal e；Wherein, e=uref-ufed；
The PID controller is electrically connected with the IGBT trigger control circuit, for introducing the deviation signal e as it
Input, and constantly deviation signal e is modified, obtain output voltage uf, and by output voltage ufInput to the PWM tune
Circuit processed；
The PWM modulation circuit is electrically connected with the PID controller, for introducing the output voltage ufAs its input
Signal, and according to the output voltage ufSize to the IGBT trigger control circuit control signal duty ratio DR carry out
It adjusts；
Wherein, when the temperature in electric kiln is higher than set temperature, then the IGBT is reduced by the PWM modulation circuit
The duty ratio of the control signal of trigger control circuit, makes the reduction of electrical kiln in-furnace temperature；
When the temperature in electric kiln is lower than set temperature, then the IGBT is increased by the PWM modulation circuit and triggered
The duty ratio of the control signal of control circuit, makes in-furnace temperature can be made to increase.
During specific implementation, the temperature sensor uses thermoelectricity according to the requirement of temperature measurement range and measurement accuracy
Even sensor, and galvanic couple material selection nickel chromium triangle-nickel silicon alloy.
Based on above-mentioned apparatus, the thermostatic implementation process of the electric kiln specifically:
Step 1, using the temperature in temperature sensor detection electric kiln and the temperature signal that will test is converted into voltage
Signal ufedFeed back to IGBT trigger control circuit；
In this step, the temperature sensor is passed according to the requirement of temperature measurement range and measurement accuracy using thermocouple
Sensor, the low of electric kiln, middle section temperature range are generally at 1000 DEG C hereinafter, according to its temperature requirement, galvanic couple material selection nickel
Chromium-nickel silicon alloy, Graduation Number K.
Step 2, the IGBT trigger control circuit are by the voltage signal u of feedbackfedWith reference voltage ufefIt is compared
To deviation signal e；Wherein, e=uref-ufed；
Step 3 is introduced the deviation signal e by PID controller as its input, and constantly repaired to deviation signal e
Just, output voltage u is obtainedf, and by output voltage ufInput to PWM modulation circuit；
In this step, obtained output voltage ufIt indicates are as follows:
uf=kp*e+ki*∫e dt+kd*(de/dt)
Wherein, kp、ki、kdProportionality coefficient, integral coefficient and the differential coefficient of the respectively described PID controller.
Step 4, the PWM modulation circuit introduce the output voltage ufAs its input signal, and according to the output
Voltage ufSize the duty ratio DR of the control signal of the IGBT trigger control circuit is adjusted；
In this step, the duty ratio DR of the control signal of the IGBT trigger control circuit adjusts formula are as follows:
TonFor the turn-on time of IGBT in a period, T is the period；
In the case where ignoring grid side inductance, the ohmically voltage effective value of electric kiln is indicated are as follows:
U0=DRUs
Wherein: UsFor supply voltage virtual value；
The ohmically voltage of the electric kiln is controlled by adjusting duty ratio DR, realizes the adjusting to furnace temperature.
Step 5, when the temperature in electric kiln be higher than set temperature when, then by the PWM modulation circuit reduction described in
The duty ratio of the control signal of IGBT trigger control circuit, makes the reduction of electrical kiln in-furnace temperature；
Step 6, when the temperature in electric kiln be lower than set temperature when, then by the PWM modulation circuit increase described in
The duty ratio of the control signal of IGBT trigger control circuit, makes in-furnace temperature can be made to increase.
The adjustment process of above-mentioned apparatus need to only give IGBT trigger signal within a period of power supply, compared to traditional
Electric kiln temperature control method is more simple, more efficient.
It is described in detail below with the course of work of the specific example to device, it should be noted that in following examples
Used numerical value is only for example, and can do corresponding change according to actual demand.
In this example, certain electrical kiln furnace system is equipped with 27 groups of temperature controller, total rated power on electric kiln ohmic load
For 324W, the resistance of one 2 Ω of every group of temperature controller series connection, phase indirect method, then voltage rating is 380V, basis in electric kiln
The height of its temperature is divided into high-temperature region, low-temperature space and the warm area of heat preservation zone three, is equipped with transmission device, ceramic raw material in electric kiln
It is placed on conveyer belt in furnace and recycles transmission, the difference of temperature is required with meeting in ceramic refining process.This example is with electrical kiln
It is illustrated for the temperature controlled processes of furnace holding stage, is generally 600 DEG C in the temperature in ceramic thermal insulation stage, there is 9 at this time
Group temperature controller is in running order, remaining 18 groups in an off state.
(1) temperature sensor detects that in-furnace temperature is 660 DEG C, and the control signal of IGBT trigger control circuit accounts at this time
Sky ratio DR is 35%, then the voltage effective value on every group of ohmic load of electric kiln are as follows:
U0=DRUs=35%*380V=133V
Thus ohmically power is obtained are as follows:
Wherein:TonFor the turn-on time of IGBT in a period, T is the period；
UsFor supply voltage virtual value.
(2) temperature signal that temperature sensor will test is converted into voltage signal and feeds back to IGBT trigger control circuit,
It is compared with reference voltage, obtains deviation signal e.
(3) PID controller introduces deviation signal e as its input, obtains output voltage UfAnd input to PWM modulation electricity
Road makes duty ratio DR be reduced to 28%, at this time the voltage effective value on electric kiln ohmic load are as follows:
U0'=DR ' Us=28%*38QV=106.4V
Thus ohmically power is obtained are as follows:
By above-mentioned control method, the output power on electric kiln ohmic load reduces, due to the limitation of electrical kiln furnace apparatus,
It there will necessarily be temperature loss in ceramic refining process, then the temperature in electric kiln will necessarily reduce.
(4) further, when detecting electrical kiln in-furnace temperature lower than ideal temperature, then IGBT is increased by control circuit
The duty ratio of trigger signal, increases in-furnace temperature, to realize the adjusting to furnace temperature.
It is worth noting that, the content being not described in detail in the utility model embodiment belongs to this field professional technique people
The prior art well known to member.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art can readily occur in the technical scope that the utility model discloses
Change or replacement, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should
Subject to the scope of protection of the claims.
Claims (2)
1. the device that a kind of electrical kiln furnace temperature is adjusted, which is characterized in that described device includes temperature sensor, IGBT triggering control
Circuit, PID controller and PWM modulation circuit, in which:
The temperature sensor is set in electric kiln, and is electrically connected with the IGBT trigger control circuit；
The PID controller is electrically connected with the IGBT trigger control circuit；
The PWM modulation circuit is electrically connected with the PID controller.
2. the device that electrical kiln furnace temperature as described in claim 1 is adjusted, which is characterized in that
The temperature sensor uses thermocouple sensor, and galvanic couple material according to the requirement of temperature measurement range and measurement accuracy
Select nickel chromium triangle-nickel silicon alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821955607.5U CN209310530U (en) | 2018-11-26 | 2018-11-26 | A kind of device that electrical kiln furnace temperature is adjusted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821955607.5U CN209310530U (en) | 2018-11-26 | 2018-11-26 | A kind of device that electrical kiln furnace temperature is adjusted |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209310530U true CN209310530U (en) | 2019-08-27 |
Family
ID=67674390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821955607.5U Active CN209310530U (en) | 2018-11-26 | 2018-11-26 | A kind of device that electrical kiln furnace temperature is adjusted |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209310530U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520321A (en) * | 2018-11-26 | 2019-03-26 | 安徽大学 | A kind of method and device that electrical kiln furnace temperature is adjusted |
-
2018
- 2018-11-26 CN CN201821955607.5U patent/CN209310530U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520321A (en) * | 2018-11-26 | 2019-03-26 | 安徽大学 | A kind of method and device that electrical kiln furnace temperature is adjusted |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209310530U (en) | A kind of device that electrical kiln furnace temperature is adjusted | |
| CN101720146B (en) | Control method of embedding depth of electrode into ore-smelting electric furnace | |
| CN109757003A (en) | Mineral hot furnace autocontrol method | |
| CN109520321A (en) | A kind of method and device that electrical kiln furnace temperature is adjusted | |
| CN101888723B (en) | Control method of sensing heat-transmission temperature and temperature control system thereof | |
| CN206692327U (en) | A kind of power transmission system for graphitizing furnace | |
| CN203855681U (en) | Heat exchange sapphire growth furnace system and power control system thereof | |
| CN207831927U (en) | A kind of cement sample calcining furnace | |
| CN201607652U (en) | Fast temperature rising control system | |
| CN1048330C (en) | Ultra-high temp electric furnace | |
| CN111718140A (en) | High-temperature calcination method for semi-hydrated gypsum | |
| CN2874913Y (en) | Power supply device of smelting quartz production furnace | |
| CN201662734U (en) | Inductive and diathermanous temperature control system | |
| WO2019140819A1 (en) | Method for designing electrode diameter and furnace shell shape of two-phase direct-current (dc) fused magnesia furnace | |
| CN201880886U (en) | Heating device of aluminum liquid flow groove | |
| Lu et al. | Multi-control strategy combinatorial control of burning temperature of cement rotary kiln | |
| CN204272411U (en) | A kind of electromagnetic induction device for metal works heating | |
| SU1765650A1 (en) | Automatic control system of reaction zone position in ore electric arc furnace bath | |
| CN1830771A (en) | Secondary calcination and graphitized system and secondary calcination and graphitization technological method | |
| CN201443963U (en) | Circuit device for automatically distributing power of one-for-two smelting furnace | |
| CN105278359B (en) | A kind of controller for reaching multivariable Control by single argument control unit | |
| CN201054794Y (en) | An electric heating device for glass stove feeding channel and annealing stove | |
| CN203771978U (en) | Full-automatic frequency conversion control type high-temperature ceramic muffle furnace | |
| CN217546351U (en) | Calcium carbide furnace electrode control device in calcium carbide production process | |
| CN204902583U (en) | Fixed cycle zero passage triggers electric heating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |