CN106371351A - ARM single-chip microcomputer based SCR intermediate frequency furnace control system - Google Patents
ARM single-chip microcomputer based SCR intermediate frequency furnace control system Download PDFInfo
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- CN106371351A CN106371351A CN201610717544.9A CN201610717544A CN106371351A CN 106371351 A CN106371351 A CN 106371351A CN 201610717544 A CN201610717544 A CN 201610717544A CN 106371351 A CN106371351 A CN 106371351A
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- chip microcomputer
- intermediate frequency
- control system
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- 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
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- 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
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24024—Safety, surveillance
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses an ARM single-chip microcomputer based SCR intermediate frequency furnace control system, which comprises a main controller, a communication module, an analog-to-digital conversion module, a digital signal processing module and an inversion signal generating and processing module. The communication module, the analog-to-digital conversion module, the digital signal processing module and the inversion signal generating and processing module are all connected to the main controller through board lines. The ARM single-chip microcomputer based SCR intermediate frequency furnace control system of the invention utilizes a high-speed single-chip microcomputer to replace a conventional simulated circuit and has a rapid response speed. In addition, the control precision of the system is also high; the logic is strict; the failure rate is low; the board size is small; the human-machine interface is digitalized. All these features enable the workmen to debug the system very conveniently.
Description
Technical field
The invention belongs to intermediate frequency furnace control technology field, more particularly, to a kind of scr intermediate frequency furnace control based on arm single-chip microcomputer
System.
Background technology
Existing Analogical Circuit Technique shortcoming: circuit is complicated, components and parts are numerous, and fault rate is high, to rigging up and debugging personnel
Competency profiling is high, and system response time is slow, poor for special circumstances adaptibility to response, and product up-gradation difficulty is high.
Content of the invention
It is an object of the invention to provide a kind of scr intermediate frequency furnace control system based on arm single-chip microcomputer is it is intended to solve existing
In analog circuit, circuit is complicated, and components and parts are numerous, and fault rate is high, high to rigging up and debugging personnel qualifications, and system is rung
Answer speed slow, product up-gradation difficulty high problem poor for special circumstances adaptibility to response.
The present invention is achieved in that a kind of scr intermediate frequency furnace control system based on arm single-chip microcomputer, should be based on arm monolithic
The scr intermediate frequency furnace control of machine includes master controller, communication module, analog-to-digital conversion module, digital signal processing module and inversion letter
Number occur processing module；Described communication module, analog-to-digital conversion module, digital signal processing module, inverter signal occur to process mould
Block is all connected with master controller by printed line.Master controller, by a/d sampling by inverter voltage, inverter current, capacitance voltage,
The analog quantity parameters such as coil voltage, DC bus-bar voltage, realtime power collect in master controller, carry out root-mean-square process to it
After obtain virtual value participate in control.Inverter current signal is done and triggers as scr after software zero passage detection and hardware zero passage detection
The reference signal of pulse is it is ensured that scr drives to trigger according to system frequency, it is to avoid the phenomenon that upper and lower bridge arm leads directly to occurs.
Collection startup simultaneously, stopping, reset, the on-off model such as ploss1, ploss2, plock, flock, are carried out at software Key dithering
After reason, the operation of control system, stopping and fault alarm are processed.
Described master controller is used for a/d sampling, data processing, logical signal judgement, fault alarm and and upper machine communication；
Described communication module is Communication processing module, is changed ttl signal by high speed photo coupling and communication chip and carry out remote
Distance Transmission, shows to the signal of transmission simultaneously；
Described analog-to-digital conversion module is analogue collection module, for gathering external signal and through electric resistance partial pressure, inductance capacitance
After filtering and diode protection, signal is modulated with signal and is input to master controller；
Described digital signal processing module, will be started, and stopped, resetting by optocoupler, outside ploss1, ploss2, plock, flock
The signal of portion's input carries out Phototube Coupling, inputs to master controller to the voltage obtaining after buffer chip modulation；
Described inverter signal occurs processing module, for inverter signal, module occurs, for setting up one according to the time calculating in rear class
After level virtual protection, trigger the pulse of corresponding brachium pontis.
Further, described master controller adopts stm32f407 series arm single-chip microcomputer；Master controller has been internally integrated timing
Device, described intervalometer is used for interruption frequency collection inverter voltage, inverter current, capacitance voltage, coil voltage, dc bus electricity
Pressure, the parameter of realtime power, and carry out a root-mean-square value calculating in each zero crossing.
Further, described high speed photo coupling is 6n137, and communication chip is 485 communication chip sp3485, and display is 10 cun
Mcgs touch screen；Described high speed photo coupling, communication chip, display are sequentially connected by printed line；
Described high speed photo coupling is provided with communication interface for 6n137, for Phototube Coupling；
Communication chip is provided with rs485 hardware interface；Described rs485 hardware interface and 10 cun of mcgs touch screens are all by modbus
Agreement is used for communicating；
Described 10 cun of mcgs touch screens are used for showing based on the current operating frequency of the scr intermediate frequency furnace control system of arm single-chip microcomputer,
Given power percentage, output percentage ratio, the parameter of zero passage phase shift time.
Further, described mcgs touch screen is additionally operable to set the high limit of inverter power and the high limit of height, the high limit of inverter current and height
The high limit of high limit, capacitance voltage and the parameter of high limit, the high limit of inlet wire current and high limit.
Further, described analog-to-digital conversion module is internally integrated a/d transducer, inverter voltage acquisition module, inverter current are adopted
Collection module, capacitance voltage acquisition module, coil voltage acquisition module, DC bus-bar voltage collection module, realtime power collection mould
Block；Described inverter voltage acquisition module, inverter current acquisition module, capacitance voltage acquisition module, coil voltage acquisition module, straight
Stream busbar voltage acquisition module, realtime power acquisition module are all connected with a/d transducer by wire；Described a/d transducer is
Analog digital conversion protection circuit, described is connected with master controller by printed line by analog digital conversion protection circuit.
Further, digital signal processing module includes digital signal processing circuit, starting module, stopping modular, reset mould
Block, ploss1 module, ploss2 module, plock module, flock module；Described starting module, stopping modular, reseting module,
Ploss1 module, ploss2 module, plock module, flock module are all connected with digital signal processing circuit by printed line.
Further, inverter signal occurs processing module to include controllable silicon driving output module, mega8cpu logical process mould
Block and gate circuit, controllable silicon output module；Described controllable silicon drive output module pass through printed line respectively with mega8cpu logic at
Reason module is connected with gate circuit；Described mega8cpu logic processing module is connected by printed line and gate circuit；Pass through with gate circuit
Printed line is connected with controllable silicon output module.
Further, described dc24v power module, filtered electrical are also included based on the scr intermediate frequency furnace control system of arm single-chip microcomputer
Road, dc/dc transducer, flash module；Described dc24v power module, filter circuit, dc/dc transducer are connected successively by printed line
Connect；Dc/dc transducer, flash module all connect master controller by printed line.
The scr intermediate frequency furnace control system based on arm single-chip microcomputer that the present invention provides utilizes high-speed microprocessor to replace traditional mould
Intend circuit, fast response time, control accuracy is high, logic is rigorous, and fault rate is low, plank small volume, digitized man machine interface, work
Personnel's debugging is convenient；
By the use of stm32f407 series arm single-chip microcomputer as master controller, described controller internal clock frequencies are up to the present invention
168mhz, can achieve the sample rate of up to 1mhz, and system response time is only 10us, is internally integrated 12 a/d transducers, adopts
Sample precision may be up to 0.02%, with the timer interruption frequency collection inverter voltage of 200k hertz, inverter current, capacitance voltage, line
The parameters such as circle voltage, DC bus-bar voltage, realtime power, and carry out a root-mean-square value calculating in each zero crossing.For 500
For the intermediate frequency furnace of hertz natural frequency, a cycle can be divided into 400 parts by the processing frequency of 200k hertz, and resolution can be high
Reach 0.25%.Controller is communicated by modbus agreement with mcgs touch screen by rs485 hardware interface.Communication interface is adopted
Realize Phototube Coupling with high speed photo coupling 6n137, with conditions of avoiding strong magnetic disturbance, impact is produced on communication.Commissioning staff is permissible
Intuitively observe each analog quantity input and the numerical value of digital quantity input/output port, and can intuitively display systems work at present
Frequency, given power percentage, output percentage ratio, the parameter such as zero passage phase shift time.Inversion can be set by touch screen
The high limit of power and the high limit of height, the high limit of inverter current and the high limit of height, the high limit of capacitance voltage and the high limit of height, the high limit of inlet wire current and height are high
The parameters such as limit, thus realize the defencive function to Important Components all in running.
Because controllable silicon has zero-crossing switching characteristic, certain brachium pontis in the case of its relatively non-zero passage of bridge arm current absolutely not
Allow triggering and conducting, phenomenon that upper and lower bridge arm lead directly to otherwise occurs.Scene interference is relatively strong, therefore after arm output signal
End increased a piece of avr single-chip microcomputer mega8l to realize upper and lower bridge arm logical interlock again, and its principle is when upper and lower bridge arm is not led
When the logical time is more than half natural frequency cycle time, just allow triggering.
Brief description
Fig. 1 is the scr intermediate frequency furnace control system schematic diagram based on arm single-chip microcomputer provided in an embodiment of the present invention；
In figure: 1, master controller；2nd, communication module；3rd, analog-to-digital conversion module；4th, digital signal processing module；5th, inverter signal is sent out
Raw processing module.
Fig. 2 is communication module circuit diagram provided in an embodiment of the present invention；
Fig. 3 is analog digital conversion protection circuit figure provided in an embodiment of the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to
Limit the present invention.
Below in conjunction with the accompanying drawings and specific embodiment is further described to the application principle of the present invention.
The scr intermediate frequency furnace control system system pie graph based on arm single-chip microcomputer of the present invention is as shown in Figure 1:
System is divided into 5 functional devices, respectively master controller 1, communication module 2, analog-to-digital conversion module 3, Digital Signal Processing
There is processing module 5 in module 4 and inverter signal.
Module 1 is master controller stm32f407 series arm single-chip microcomputer, and described controller internal clock frequencies are up to
168mhz, can achieve the sample rate of up to 1mhz, and system response time is only 10us, is internally integrated 12 a/d transducers, adopts
Sample precision may be up to 0.02%.Master controller be responsible for a/d sampling, data processing, logical signal judge, fault alarm and with upper
The functions such as machine communication, are the core cells of the present invention.
Module 2 is Communication processing module, is turned ttl signal by high speed photo coupling 6n137 and 485 communication chip sp3485
Realize long-distance transmissions for 485 signals, realize Phototube Coupling simultaneously, to avoid presence to answer high voltage to burn master controller.Generation
Watch circuit is shown in Fig. 2.
Module 3 is analogue collection module, inverter voltage, inverter current, capacitance voltage, coil voltage, dc bus electricity
The external sampling signal such as pressure, realtime power is modulated into 0-3.3v after electric resistance partial pressure, inductance capacitor filtering and diode protection
Signal input to master controller, master controller is sampled to it with the sample frequency of 200khz.The sampled result obtaining exists
Each cycle is stored in the middle of array when starting, and carries out root-mean-square value calculating in each end cycle, each harmonic period is at least
Sampling 400 times, has fully ensured that sampling and the precision calculating.Represent circuit and see Fig. 3
Module 4 be digital signal processing circuit, will start, and stop, resetting by optocoupler, ploss1, ploss2, plock,
The external input signals such as flock carry out Phototube Coupling, obtain 0-5v voltage and arrive voltage modulated through 74lvc4245 buffer chip
0-3.3v inputs to master controller, and master controller carries out executing corresponding operating after stabilization process to signal.
There is module for inverter signal in module 5, master controller calculates Time delay according to zero cross signal and power signal
Time, there is module according to the pulse of the corresponding brachium pontis of Time Triggered calculating, for preventing interference maloperation from making, the present invention in inverter signal
Increased one-level virtual protection in rear class it is ensured that the accurate triggering of signal again.
With reference to principle, the present invention is further described.
, by the use of stm32f407 series arm single-chip microcomputer as master controller, described controller internal clock frequencies are high for the present invention
Reach 168mhz, can achieve the sample rate of up to 1mhz, system response time is only 10us, is internally integrated 12 a/d transducers,
Sampling precision may be up to 0.02%, with the timer interruption frequency collection inverter voltage of 200k hertz, inverter current, capacitance voltage,
The parameters such as coil voltage, DC bus-bar voltage, realtime power, and carry out a root-mean-square value calculating in each zero crossing.For
For the intermediate frequency furnace of 500 hertz of natural frequencies, a cycle can be divided into 400 parts by the processing frequency of 200k hertz, resolution
May be up to 0.25%.Controller is communicated by modbus agreement with mcgs touch screen by rs485 hardware interface.Communication connects
Mouth realizes Phototube Coupling using high speed photo coupling 6n137, produces impact with conditions of avoiding strong magnetic disturbance to communication.Commissioning staff
The numerical value of each analog quantity input and digital quantity input/output port can intuitively be observed, and can intuitively display systems current
Operating frequency, given power percentage, output percentage ratio, the parameter such as zero passage phase shift time.Can be set by touch screen
The high limit of inverter power and high limit, the high limit of inverter current and high limit, the high limit of capacitance voltage and high limit, the high limit of inlet wire current and
The parameters such as high limit, thus realize the defencive function to Important Components all in running.
Because controllable silicon has zero-crossing switching characteristic, certain brachium pontis in the case of its relatively non-zero passage of bridge arm current absolutely not
Allow triggering and conducting, phenomenon that upper and lower bridge arm lead directly to otherwise occurs.Scene interference is relatively strong, therefore after arm output signal
End increased a piece of avr single-chip microcomputer mega8l to realize upper and lower bridge arm logical interlock again, and its principle is when upper and lower bridge arm is not led
When the logical time is more than half natural frequency cycle time, just allow triggering.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of scr intermediate frequency furnace control system based on arm single-chip microcomputer is it is characterised in that be somebody's turn to do in the scr based on arm single-chip microcomputer
The control of frequency stove includes master controller, communication module, analog-to-digital conversion module, digital signal processing module and inverter signal and processes
Module；There is processing module all by plate in described communication module, analog-to-digital conversion module, digital signal processing module, inverter signal
Line is connected with master controller；
Described master controller is used for a/d sampling, data processing, logical signal judgement, fault alarm and and upper machine communication；
Described communication module is Communication processing module, is changed ttl signal by high speed photo coupling and communication chip and carry out remote
Distance Transmission, shows to the signal of transmission simultaneously；
Described analog-to-digital conversion module is analogue collection module, for gathering external signal and through electric resistance partial pressure, inductance capacitance
After filtering and diode protection, signal is modulated with signal and is input to master controller；
Described digital signal processing module, will be started, and stopped, resetting by optocoupler, outside ploss1, ploss2, plock, flock
The signal of portion's input carries out Phototube Coupling, inputs to master controller to the voltage obtaining after buffer chip modulation；
Described inverter signal occurs processing module, for inverter signal, module occurs, for setting up one according to the time calculating in rear class
After level virtual protection, trigger the pulse of corresponding brachium pontis.
2. the scr intermediate frequency furnace control system based on arm single-chip microcomputer as claimed in claim 1 is it is characterised in that described main control
Device adopts stm32f407 series arm single-chip microcomputer；Master controller has been internally integrated intervalometer, and described intervalometer is used for interruption frequency
Collection inverter voltage, inverter current, capacitance voltage, coil voltage, DC bus-bar voltage, the parameter of realtime power, and at each
Zero crossing carries out a root-mean-square value and calculates.
3. the scr intermediate frequency furnace control system based on arm single-chip microcomputer as claimed in claim 1 is it is characterised in that described high-speed light
Coupling is 6n137, and communication chip is 485 communication chip sp3485, and display is 10 cun of mcgs touch screens；Described high speed photo coupling, logical
News chip, display are sequentially connected by printed line；
Described high speed photo coupling is provided with communication interface for 6n137, for Phototube Coupling；
Communication chip is provided with rs485 hardware interface；Described rs485 hardware interface and 10 cun of mcgs touch screens are all by modbus
Agreement is used for communicating；
Described 10 cun of mcgs touch screens are used for showing based on the current operating frequency of the scr intermediate frequency furnace control system of arm single-chip microcomputer,
Given power percentage, output percentage ratio, the parameter of zero passage phase shift time.
4. the scr intermediate frequency furnace control system based on arm single-chip microcomputer as claimed in claim 3 is it is characterised in that described mcgs touches
Touch screen be additionally operable to set the high limit of inverter power and high limit, the high limit of inverter current and high limit, the high limit of capacitance voltage and high limit,
The high limit of inlet wire current and the parameter of high limit.
5. the scr intermediate frequency furnace control system based on arm single-chip microcomputer as claimed in claim 1 is it is characterised in that described modulus turns
Die change block is internally integrated a/d transducer, inverter voltage acquisition module, inverter current acquisition module, capacitance voltage acquisition module, line
Circle voltage acquisition module, DC bus-bar voltage collection module, realtime power acquisition module；Described inverter voltage acquisition module, inverse
Time-dependent current acquisition module, capacitance voltage acquisition module, coil voltage acquisition module, DC bus-bar voltage collection module, real-time work(
Rate acquisition module is all connected with a/d transducer by wire；Described a/d transducer is analog digital conversion protection circuit, described passes through
Analog digital conversion protection circuit is connected with master controller by printed line.
6. the scr intermediate frequency furnace control system based on arm single-chip microcomputer as claimed in claim 1 is it is characterised in that at digital signal
Reason module include digital signal processing circuit, starting module, stopping modular, reseting module, ploss1 module, ploss2 module,
Plock module, flock module；Described starting module, stopping modular, reseting module, ploss1 module, ploss2 module,
Plock module, flock module are all connected with digital signal processing circuit by printed line.
7. the scr intermediate frequency furnace control system based on arm single-chip microcomputer as claimed in claim 1 is it is characterised in that inverter signal is sent out
Raw processing module includes controllable silicon and drives output module, mega8cpu logic processing module and gate circuit, controllable silicon output mould
Block；Described controllable silicon drives output module to be connected with gate circuit with mega8cpu logic processing module respectively by printed line；Described
Mega8cpu logic processing module is connected by printed line and gate circuit；Pass through printed line with gate circuit with controllable silicon output module even
Connect.
8. the scr intermediate frequency furnace control system based on arm single-chip microcomputer as claimed in claim 1 is it is characterised in that described be based on
The scr intermediate frequency furnace control system of arm single-chip microcomputer also includes dc24v power module, filter circuit, dc/dc transducer, flash mould
Block；Described dc24v power module, filter circuit, dc/dc transducer are sequentially connected by printed line；Dc/dc transducer, flash mould
Block all connects master controller by printed line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610717544.9A CN106371351B (en) | 2016-08-25 | 2016-08-25 | A kind of SCR intermediate frequency furnace control system based on ARM single-chip microcontroller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610717544.9A CN106371351B (en) | 2016-08-25 | 2016-08-25 | A kind of SCR intermediate frequency furnace control system based on ARM single-chip microcontroller |
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| Publication Number | Publication Date |
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| CN106371351A true CN106371351A (en) | 2017-02-01 |
| CN106371351B CN106371351B (en) | 2019-05-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112432501A (en) * | 2020-10-16 | 2021-03-02 | 山东省科学院能源研究所 | Comprehensive protection system and method for intermediate frequency furnace |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3936702A (en) * | 1972-02-24 | 1976-02-03 | Micro Devices Corporation | Electrical protection means |
| CN201933134U (en) * | 2010-12-13 | 2011-08-17 | 贵阳铝镁设计研究院有限公司 | DSP (digital signal processor) control system of I type electric reduction furnace units of reduction-distillation workshop |
| CN203851037U (en) * | 2014-05-08 | 2014-09-24 | 临汾鹏泰伟业有限公司 | Intermediate frequency furnace control circuit |
| CN104570912A (en) * | 2014-12-30 | 2015-04-29 | 朱兴发 | Full-automatic smelting control system and control method for polycrystalline silicon |
| CN104677126A (en) * | 2013-11-30 | 2015-06-03 | 陕西东显永益机电技术有限公司 | Control system of medium-frequency heating furnace |
| CN204514087U (en) * | 2015-04-12 | 2015-07-29 | 郑州大学 | Novel intermediate frequency furnace |
| CN205262236U (en) * | 2015-11-10 | 2016-05-25 | 登封电厂集团铝合金有限公司 | Intermediate frequency furnace circulation water temperature control alarm device |
-
2016
- 2016-08-25 CN CN201610717544.9A patent/CN106371351B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3936702A (en) * | 1972-02-24 | 1976-02-03 | Micro Devices Corporation | Electrical protection means |
| CN201933134U (en) * | 2010-12-13 | 2011-08-17 | 贵阳铝镁设计研究院有限公司 | DSP (digital signal processor) control system of I type electric reduction furnace units of reduction-distillation workshop |
| CN104677126A (en) * | 2013-11-30 | 2015-06-03 | 陕西东显永益机电技术有限公司 | Control system of medium-frequency heating furnace |
| CN203851037U (en) * | 2014-05-08 | 2014-09-24 | 临汾鹏泰伟业有限公司 | Intermediate frequency furnace control circuit |
| CN104570912A (en) * | 2014-12-30 | 2015-04-29 | 朱兴发 | Full-automatic smelting control system and control method for polycrystalline silicon |
| CN204514087U (en) * | 2015-04-12 | 2015-07-29 | 郑州大学 | Novel intermediate frequency furnace |
| CN205262236U (en) * | 2015-11-10 | 2016-05-25 | 登封电厂集团铝合金有限公司 | Intermediate frequency furnace circulation water temperature control alarm device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112432501A (en) * | 2020-10-16 | 2021-03-02 | 山东省科学院能源研究所 | Comprehensive protection system and method for intermediate frequency furnace |
| CN112432501B (en) * | 2020-10-16 | 2022-07-29 | 山东省科学院能源研究所 | Comprehensive protection system and method for intermediate frequency furnace |
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| CN106371351B (en) | 2019-05-24 |
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Effective date of registration: 20210425 Address after: 276000 No.39 dengwangshan Road, economic development zone, Lanling County, Linyi City, Shandong Province Patentee after: Shandong Shenzhou Industrial Technology Co.,Ltd. Address before: Shuangyuehu high tech Zone in Shandong province Linyi City Road 276000 No. 266 Patentee before: SHANDONG SHENZHOU ELECTRIC FURNACE Co.,Ltd. |