CN106227264A - A kind of salt bath furnace temperature control system - Google Patents
A kind of salt bath furnace temperature control system Download PDFInfo
- Publication number
- CN106227264A CN106227264A CN201610711618.8A CN201610711618A CN106227264A CN 106227264 A CN106227264 A CN 106227264A CN 201610711618 A CN201610711618 A CN 201610711618A CN 106227264 A CN106227264 A CN 106227264A
- Authority
- CN
- China
- Prior art keywords
- temperature
- salt bath
- temperature control
- bath furnace
- collecting device
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- 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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- 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
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/22—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element being a thermocouple
- G05D23/2236—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element being a thermocouple details of the regulator
Abstract
The present invention relates to automation field, be specifically related to a kind of salt bath furnace temperature control system.Including: gather the temperature collecting device of salt bath in-furnace temperature；It is connected with temperature collecting device, the temperature control equipment of heating-up temperature in control salt bath furnace；It is connected with temperature control equipment, receives the heater that salt bath furnace is heated by the current signal of temperature control equipment.Present configuration is simple and convenient to operate, temperature control precision high, furnace temperature homogeneous temperature, and conforming product rate is high.Contactless power controller is used to replace traditional contactors position formula control realization accurate temperature controlling by Intelligent PID Control, while reducing noise, improve temperature control dynamic property and static accuracy, effectively prevent apparatus overload, owing to " on-off type " heating mode conventional for system is modified to continuous print " warm fire is stewed slowly " pattern, solve saline solution acutely to roll problem, reduce part rejection rate.
Description
Technical field
The present invention relates to automation field, be specifically related to a kind of salt bath furnace temperature control system.
Background technology
The salt stove used in prior art is that manually to transfer the files that transformator+traditional contactors position formula control mode is come right mostly
The cold start-up of salt bath furnace, temperature-rise period, insulating process are controlled.This control device is the most backward, in cold-start phase, operation
Person, first in putting the electrodes into burner hearth, adds a small amount of solid salt mixture of barium chloride and potassium chloride (its composition be),
The manual gear shift mechanism of transformator is pushed 1 grade, restarts heating；Treating that the temperature in burner hearth slowly raises, salt slowly melts, behaviour
Author puts into a certain amount of salt again, turns off heating, gear is allocated to 2 grades ... by that analogy, until being completely melt to reach by salt
To given process temperature.It can be seen that in cold start-up temperature-rise period, transformator is to be risen to high tap position by low-grade location, but is rising
During Dang, it is necessary for first stopping heating carrying out transformator gear shift operation again；And in the heating quenching stage, the regulation of temperature is
It is abutted against tentaculum break-make frequently temperature is controlled.The mode of operation of this backwardness, not only operation is loaded down with trivial details, and temperature control is smart
It is the poorest to spend, and in shift process, spark phenomenon often occurs, so that transformator contact is easily burned out, not only carries
Carry out potential safety hazard, and affect manufacturing schedule.
For solving problem above, Publication No.: CN203658865U, the day for announcing is: the Chinese invention of 2014-06-18 is special
Profit application, discloses a kind of salt bath furnace temperature control system, including the temperature collecting cell gathering described salt bath furnace temperature；With institute
Stating temperature collecting cell to be connected, when the temperature signal that described temperature collecting cell collects is beyond preset value, output is corresponding
The controller of control signal；It is connected with described controller, controls described salt bath furnace according to the control signal that described controller exports
The power-off control unit of main power source power-off.
This system uses " on-off type " heating mode, by when controller determines that this temperature has been more than preset temperature value,
Control the main power source power-off of salt bath furnace, it is to avoid salt bath furnace temperature is too high.Heat up the most again.Although this system solves
The problem of salt bath furnace temperature automatic control, but when heating due to the drastically rising of temperature, acutely turning over of saline solution easily occurs
Rolling, causes part especially finding excessive deformation in high temperature saline solution to be deformed scrapping, and reduces the qualification rate of product.
Summary of the invention
It is an object of the invention to, for problems of the prior art, propose a kind of simple in construction, easy to operate,
Temperature control precision is high, a kind of salt bath furnace temperature control system of furnace temperature homogeneous temperature, thus improves the product that processes
Qualification rate.
To achieve these goals, the technical solution used in the present invention is:
A kind of salt bath furnace temperature control system, including:
Gather the temperature collecting device of salt bath in-furnace temperature；
It is connected with temperature collecting device, the temperature control equipment of heating-up temperature in control salt bath furnace；
It is connected with temperature control equipment, receives the heater that salt bath furnace is heated by the current signal of temperature control equipment.
Described temperature control equipment includes PID regulator I, PID regulator II and power controller, described PID regulator I
Input be connected with temperature collecting device, outfan is connected with the input of PID regulator II；Described PID regulator II
Input is connected with the outfan of PID regulator I and the outfan of power controller respectively, and outfan is defeated with power controller
Enter end to be connected；The input of described power controller is connected with the outfan of PID regulator II, and outfan regulates with PID respectively
The input of device II is connected with heater.
Described temperature collecting device is arranged in salt bath furnace, is connected with the input of PID regulator I.
Described heater is arranged in salt bath furnace, is connected with the outfan of power controller.
Described temperature collecting device uses temperature sensor.
Described temperature collecting device uses thermocouple.
Described heater uses electrode.
Owing to have employed technique scheme, the invention has the beneficial effects as follows:
1, present configuration is simple and convenient to operate, temperature control precision is high, furnace temperature homogeneous temperature, and conforming product rate is high.
2, contactless power controller is used to replace traditional contactors position formula control realization by Intelligent PID Control accurate
Temperature control, while reducing noise, improves temperature control dynamic property and static accuracy, effectively prevents apparatus overload, due to by system
Conventional " on-off type " heating mode is modified to continuous print " warm fire is stewed slowly " pattern, solves saline solution and acutely rolls problem, reduces
Part rejection rate.
3, cancel and be prone to burn and unhandy have contact transformator shift switch, adjust with the online electronics of intelligence instrument
Pressure function realizes stepless shift, thus is greatly improved the reliability of equipment and the service life of electrical equipment, improves automatization
Degree, the machining accuracy making equipment is higher.
4, initially with low current during changing stove, after salt melts gradually, electric current is gradually stepped up again to control salt making furnace
Fusion process, after saline solution has dissolved completely, full power carries out intensification regulation process again.When not processing part, for preventing salt
Under liquid curdled appearance, the insulating process that sensor not input coefficient controls.Adjustable systems reaches dynamic equilibrium, makes saline solution not coagulate
Gu and power output minimizes.Native system can greatly reduce the consumption of energy, saves operating cost.
Accompanying drawing explanation
Fig. 1 is the structure chart of salt bath furnace temperature control system of the present invention；
Fig. 2 is the control principle drawing of salt bath furnace temperature control system of the present invention；
Fig. 3 is the circuit diagram of salt bath furnace temperature control system of the present invention；
Fig. 4 is the operational flowchart of salt bath furnace temperature control system of the present invention.
Labelling in figure: 1, temperature collecting device, 2, temperature control equipment, 21, PID regulator I, 22, PID regulator II,
23, power controller, 3, heater.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the present invention is described in detail.
Embodiment 1
As a kind of preferred embodiment of the present invention, with reference to Figure of description 1 to accompanying drawing 4, present embodiment discloses a kind of salt bath
Furnace temperature control system, the present embodiment includes:
A kind of salt bath furnace temperature control system, including:
Gather the temperature collecting device 1 of salt bath in-furnace temperature；
It is connected with temperature collecting device 1, the temperature control equipment 2 of heating-up temperature in control salt bath furnace；
It is connected with temperature control equipment 2, receives the heater that salt bath furnace is heated by the current signal of temperature control equipment 2
3。
Embodiment 2
As a kind of preferred embodiment of the present invention, with reference to Figure of description 1 to accompanying drawing 4, present embodiment discloses a kind of salt bath
Furnace temperature control system, the present embodiment is with the difference of above-described embodiment:
Described temperature control equipment 2 includes PID regulator I 21, PID regulator II 22 and power controller 23, and described PID regulates
The input of device I 21 is connected with temperature collecting device 1, and outfan is connected with the input of PID regulator II 22；Described PID adjusts
Joint device II 22 input be connected with the outfan of PID regulator I 21 and the outfan of power controller 23 respectively, outfan and
The input of power controller 23 is connected；The input of described power controller 23 is connected with the outfan of PID regulator II 22,
Outfan is connected with input and the heater 3 of PID regulator II 22 respectively.
Described temperature collecting device 1 is arranged in salt bath furnace, is connected with the input of PID regulator I 21.
Described heater 3 is arranged in salt bath furnace, is connected with the outfan of power controller 23.
Described temperature collecting device 1 uses temperature sensor.
Described temperature collecting device 1 uses thermocouple.
Described heater 3 uses electrode.
The online stepless voltage regulation that present invention power controller 23 and PID regulator are formed controls to replace conventional hands
Dynamic off-line gearshift, increases current feedback ring, makes system when temperature ring does not gets involved control, takes the lead in heat up body of heater by electric current loop
Process is controlled, and not only improves intensification efficiency, and makes operation simpler, safer.Wherein, PID regulator as this is
The given input of the temperature of system, thermocouple temperature sensor is using feedback temperature as temperature closed loop；There is the electricity of power controller 23 again
Stream feedback loop is as output control unit.Processing working stage at normal heat, system only carries out temperature closed loop regulation, but when rising
Temperatureization heater stage, due to the sharp change characteristic of load, the electric current PID now set on power controller 23 starts to get involved tune
Joint, limits electric current to reach to prevent the effect of overload.System is become double circle structure by original single closed loop, makes temperature control more smart
Really, uniformity is more preferable.In terms of major loop, abandon the position formula control model of countless contactor types, power controller realize
Phase-shift voltage regulating, while reducing noise, also greatly simplify the control circuit of system, reduces equipment failure rate.And due to
System is continuous print " warm fire is stewed slowly " heating mode, compared with " on-off type " heating mode before, it is also possible to solves saline solution and turns over
Roll violent problem, prevent part especially finding excessive deformation in high temperature saline solution from scrapping, make conforming product rate improve.
The operating process of native system is: when cold state, first put the electrodes among salt bath furnace, then pours into a certain amount of
Salt (solid-state), utilize the online stepless voltage regulation function of PID regulator, open heating, progressively heat up, until salt is completely melt into
Red liquid, inserts thermocouple, and instrument and monitor all start interventional systems, and now, whole system forms double-closed-loop control mould
Formula, selects mode of operation to auto state, the technological temperature needed for setting, after reaching design temperature, can automatically begin to
Process heat treatment process.
Described PID regulator can use the digital regulated instrument of SR23.
Embodiment described above only have expressed the detailed description of the invention of the application, and it describes more concrete and detailed, but also
Therefore the restriction to the application protection domain can not be interpreted as.It should be pointed out that, for those of ordinary skill in the art
For, on the premise of conceiving without departing from technical scheme, it is also possible to make some deformation and improvement, these broadly fall into this
The protection domain of application.
Claims (7)
1. a salt bath furnace temperature control system, it is characterised in that including:
Gather the temperature collecting device (1) of salt bath in-furnace temperature；
It is connected with temperature collecting device (1), the temperature control equipment (2) of heating-up temperature in control salt bath furnace；
It is connected with temperature control equipment (2), receives the heating that salt bath furnace is heated by the current signal of temperature control equipment (2)
Device (3).
A kind of salt bath furnace temperature control system the most according to claim 1, it is characterised in that: described temperature control equipment
(2) PID regulator I (21), PID regulator II (22) and power controller (23) are included, described PID regulator I (21) defeated
Entering end to be connected with temperature collecting device (1), outfan is connected with the input of PID regulator II (22)；Described PID regulator II
(22) input is connected with the outfan of PID regulator I (21) and the outfan of power controller (23) respectively, outfan with
The input of power controller (23) is connected；The input of described power controller (23) and the output of PID regulator II (22)
End is connected, and outfan is connected with input and the heater (3) of PID regulator II (22) respectively.
A kind of salt bath furnace temperature control system the most according to claim 2, it is characterised in that: described temperature collecting device
(1) it is arranged in salt bath furnace, is connected with the input of PID regulator I (21).
A kind of salt bath furnace temperature control system the most according to claim 2, it is characterised in that: described heater (3) sets
It is placed in salt bath furnace, is connected with the outfan of power controller (23).
A kind of salt bath furnace temperature control system the most according to claim 1, it is characterised in that: described temperature collecting device
(1) temperature sensor is used.
A kind of salt bath furnace temperature control system the most according to claim 1, it is characterised in that: described temperature collecting device
(1) thermocouple is used.
A kind of salt bath furnace temperature control system the most according to claim 1, it is characterised in that: described heater (3) is adopted
Use electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610711618.8A CN106227264B (en) | 2016-08-24 | 2016-08-24 | A kind of salt bath furnace temperature control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610711618.8A CN106227264B (en) | 2016-08-24 | 2016-08-24 | A kind of salt bath furnace temperature control system |
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| Publication Number | Publication Date |
|---|---|
| CN106227264A true CN106227264A (en) | 2016-12-14 |
| CN106227264B CN106227264B (en) | 2018-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610711618.8A Active CN106227264B (en) | 2016-08-24 | 2016-08-24 | A kind of salt bath furnace temperature control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109714835A (en) * | 2019-01-03 | 2019-05-03 | 南通理工学院 | A kind of electrically heated control method |
| CN110132449A (en) * | 2019-05-17 | 2019-08-16 | 成都飞机工业（集团）有限责任公司 | A kind of temperature monitoring method at equipment position |
| CN112378268A (en) * | 2020-11-13 | 2021-02-19 | 水滴智能装备技术(苏州)有限公司 | Heating furnace online furnace temperature control system and control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4688180A (en) * | 1984-12-19 | 1987-08-18 | Ohkura Electric Co., Ltd. | Pattern-switching temperature control apparatus |
| CN101893906A (en) * | 2010-07-08 | 2010-11-24 | 北京七星华创电子股份有限公司 | Temperature control system and method thereof |
| CN203593769U (en) * | 2013-11-21 | 2014-05-14 | 上海申利螺纹工具有限公司 | Auto-control salt bath furnace |
| CN203658865U (en) * | 2013-12-13 | 2014-06-18 | 西南铝业（集团）有限责任公司 | Temperature control system for salt bath furnace |
| CN204494798U (en) * | 2015-03-23 | 2015-07-22 | 河南省天利工业炉有限公司 | A kind of salt bath furnace and electric-control system thereof |
-
2016
- 2016-08-24 CN CN201610711618.8A patent/CN106227264B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4688180A (en) * | 1984-12-19 | 1987-08-18 | Ohkura Electric Co., Ltd. | Pattern-switching temperature control apparatus |
| CN101893906A (en) * | 2010-07-08 | 2010-11-24 | 北京七星华创电子股份有限公司 | Temperature control system and method thereof |
| CN203593769U (en) * | 2013-11-21 | 2014-05-14 | 上海申利螺纹工具有限公司 | Auto-control salt bath furnace |
| CN203658865U (en) * | 2013-12-13 | 2014-06-18 | 西南铝业（集团）有限责任公司 | Temperature control system for salt bath furnace |
| CN204494798U (en) * | 2015-03-23 | 2015-07-22 | 河南省天利工业炉有限公司 | A kind of salt bath furnace and electric-control system thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109714835A (en) * | 2019-01-03 | 2019-05-03 | 南通理工学院 | A kind of electrically heated control method |
| CN110132449A (en) * | 2019-05-17 | 2019-08-16 | 成都飞机工业（集团）有限责任公司 | A kind of temperature monitoring method at equipment position |
| CN112378268A (en) * | 2020-11-13 | 2021-02-19 | 水滴智能装备技术(苏州)有限公司 | Heating furnace online furnace temperature control system and control method |
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| Publication number | Publication date |
|---|---|
| CN106227264B (en) | 2018-03-16 |
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