CN110244154A - Control module for low pressure compensation of submerged arc furnace capacitor box - Google Patents
Control module for low pressure compensation of submerged arc furnace capacitor box Download PDFInfo
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- CN110244154A CN110244154A CN201910655387.7A CN201910655387A CN110244154A CN 110244154 A CN110244154 A CN 110244154A CN 201910655387 A CN201910655387 A CN 201910655387A CN 110244154 A CN110244154 A CN 110244154A
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- arc furnace
- submerged arc
- capacitor box
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- 239000003990 capacitor Substances 0.000 title claims abstract description 41
- 238000004891 communication Methods 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000008569 process Effects 0.000 claims abstract description 4
- 230000008901 benefit Effects 0.000 claims description 7
- 230000001276 controlling effect Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2506—Arrangements for conditioning or analysing measured signals, e.g. for indicating peak values ; Details concerning sampling, digitizing or waveform capturing
- G01R19/2509—Details concerning sampling, digitizing or waveform capturing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- 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
-
- 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
- G05B19/0423—Input/output
-
- 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
-
- 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
- G05B19/048—Monitoring; Safety
-
- 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
- G05B2219/21—Pc I-O input output
- G05B2219/21137—Analog to digital conversion, ADC, DAC
-
- 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
- G05B2219/25—Pc structure of the system
- G05B2219/25158—Watchdog
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The present invention relates to a kind of control modules for low pressure compensation of submerged arc furnace capacitor box, the low pressure compensation of submerged arc furnace capacitor box is provided with multiple compensation branches, the control module includes: analog-digital converter, acquires the capacitance current signal of capacitance voltage signal and each compensation branch and carries out analog-to-digital conversion process；Single-chip microcontroller is connect with the analog-digital converter；Communication module, connect with the single-chip microcontroller and and background communication；Multiple relays, each relay at least part of the multiple relay connects to be switched on or switched off to control each compensation branch with the contactor being set in each compensation branch respectively, and the multiple relay is connect with the single-chip microcontroller respectively；Power supply is powered for the low pressure compensation of submerged arc furnace capacitor box control module.
Description
Technical field
The present invention relates to mineral hot furnace fields, more particularly, to a kind of observing and controlling for low pressure compensation of submerged arc furnace capacitor box
Module.
Background technique
For every capacitor box when low benefit works normally, control system need to acquire every capacitor in low pressure compensation of submerged arc furnace device
The road Gui Neimei compensates real time temperature in the operating current, short net voltage, cabinet of branch；Control system needs to control each branch simultaneously
Investment and excision, also to design output unit module.At present on the market without directly applicable product, common solution
The following two kinds: first way is by temperature signal, voltage signal, current signal and the control system output letter in capacitor box
Number it is connected by way of cable with control unit.The problem of which, is that site operation wiring setting-out work amount is numerous greatly
It is trivial, it is easy to happen wiring error.The second way is using the existing master & slave control product in market, and three phase capacitance cabinet is arranged three sets
Control slave station arranges in pairs or groups a set of control main website to complete.Such as configuration main control station, additional three-phase are controlled with Siemens S7-300
Capacitor box adds three sets of ET200M slave stations, and main website also acquires the signals such as primary, secondary voltage electric current in addition to a cpu；Slave station is then completed
Switching output signal, temperature signal, current signal acquisition in every Xiang Duotai capacitor box.Which control system reduces master control
Cabinet processed and from many control cables between control cabinet；But system structure is complicated, with high costs, every phase Capacity control slave station wiring
Route is more in every capacitor box, and every capacitor box wiring is different from, and system is easy to appear malfunction elimination difficulty.
Summary of the invention
The purpose of the present invention is one of at least solving the above problems, which is achieved through the following technical solutions:
The present invention proposes a kind of control module for low pressure compensation of submerged arc furnace capacitor box, the low pressure compensation of submerged arc furnace electricity
Hold cabinet and be provided with multiple compensation branches, comprising:
Analog-digital converter acquires the capacitance current signal of capacitance voltage signal and each compensation branch and carries out modulus turn
Change processing；
Single-chip microcontroller is connect with the analog-digital converter；
Communication module, connect with the single-chip microcontroller and and background communication；
Multiple relays, each relay at least part of the multiple relay respectively be set to each benefit
The contactor connection repaid in branch is switched on or switched off to controlling each compensation branch, the multiple relay respectively with the list
The connection of piece machine；
Power supply is powered for the low pressure compensation of submerged arc furnace capacitor box control module.
Preferred embodiment in accordance with the present invention, the analog-digital converter temperature collection signal simultaneously carry out at analog-to-digital conversion
Reason.
Further preferred embodiment according to the present invention, the control module is built-in with to be connected with the analog-digital converter
The temperature sensor connect.
Further preferred embodiment according to the present invention, the control module are built-in with multiple small current mutual inductors,
Each small current mutual inductor is connect with one of compensation branch in multiple compensation branches respectively, to detect each compensation branch
Current signal, the multiple small current mutual inductor connect with the analog-digital converter.
Further preferred embodiment according to the present invention, multiple each compensation branches compensated in branches are respectively set
Have an operating current mutual inductor, the operating current mutual inductor respectively with each small current mutual inductor in multiple small current mutual inductors
Connection.
Further preferred embodiment according to the present invention, bleeder circuit built in the control module, for detecting electricity
Hold voltage signal, the bleeder circuit is connect with the analog-digital converter.
Further preferred embodiment according to the present invention, the communication module include RS-485 communication interface.
Further preferred embodiment according to the present invention, the control module is provided with toggle switch, for setting
The address of the control module.
Further preferred embodiment according to the present invention, the analog-digital converter are CS5463 type A/D chips.
Further preferred embodiment according to the present invention, the single-chip microcontroller are STC12LE5A60S2 type single-chip microcontrollers.
Control module for low pressure compensation of submerged arc furnace capacitor box of the invention is to have gathered detection in-cabinet temperature, circuit work
The overall-in-one control schema module for making the high integration of electric current, operating voltage and control loop switching, in conjunction with detection multi-signal
It is integrated with control vacuum contactor, detects signal other than capacitance voltage and each branch capacitance current, it can be with detecting box
Interior real time temperature provides more fully information for user.Each capacitor box is equipped with the dedicated control module, unified each
Wiring in capacitor box, master control system complete signal collecting and controlling with every capacitor box communication；Without controlling cable, installation is applied
Work is convenient, and capacitor box wiring installation workload is low, reduces control system cost.The address of control module is that manual dial-up is opened
Setting is closed, is arranged without software, when control module special breaks down, only new module's address dial-up need to be dropped and dial, replace
Maintenance can be completed in old module.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 shows the control module for low pressure compensation of submerged arc furnace capacitor box of embodiment according to the present invention.
Specific embodiment
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although showing this public affairs in attached drawing
The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure without the reality that should be illustrated here
The mode of applying is limited.It is to be able to thoroughly understand the disclosure on the contrary, providing these embodiments, and can be by this public affairs
The range opened is fully disclosed to those skilled in the art.
Embodiment according to the present invention proposes a kind of control module for low pressure compensation of submerged arc furnace capacitor box.This hair
Bright control module includes: analog-digital converter, acquires capacitance voltage signal and each compensation branch/compensation circuit capacitor electricity
Stream signal simultaneously carries out analog-to-digital conversion process；Single-chip microcontroller is connect with analog-digital converter, so as to what is exported to analog-digital converter
Current signal and voltage signal carry out operational analysis processing；Communication module, connect with single-chip microcontroller and and background communication, so as to
Enough current signals and voltage signal by by single-chip microcontroller processing are sent to backstage and receive corresponding operation order from backstage；It is more
A relay, the quantity of relay is at least equal with the compensation quantity of branch of low-voltage compensation capacitor box, so that each relay
It is connect with contactor, such as vacuum contactor being set in each compensation branch, to pass through the folding control phase of relay
The compensation branch answered is switched on or switched off, it is preferable that two duplicate relays of setting；Power supply is low pressure compensation of submerged arc furnace electricity
Hold the power supply of cabinet control module, pre- selection of land, using DC10-30V regulated power supply.
Preferred embodiment in accordance with the present invention, control module of the invention are built-in with temperature sensor, such as
PT100, analog-digital converter connect so as to temperature collection signal with temperature sensor and carries out analog-to-digital conversion process, and passes through
Temperature signal data is sent to backstage and judges whether the real time temperature in low-voltage compensation capacitor box is in conjunction for backstage by single-chip microcontroller
Manage section.Alternatively, temperature sensor can be arranged in the appropriate position of the low-voltage compensation capacitor box outside control module, and
Pass through cable connection to analog-digital converter.
Control module of the invention is preferably used for the low pressure compensation of submerged arc furnace capacitor box no more than 6 compensation branches.Fig. 1
Show the survey for the low pressure compensation of submerged arc furnace capacitor box with 6 compensation branches according to the preferred embodiment of the present invention
Module is controlled, the single-chip microcontroller of the control module uses 8 STC single-chip microcontroller STC12LE5A60S2, and analog-digital converter uses 2 channels 24
Position ammeter A/D chip CS5463, communication module includes RS-485 communication interface, and is set using the redundancy of No. 8 relays output
Meter, wherein 6 relays control the switching of 6 tunnels compensation branch respectively, other two relay is spare.Therefore, according to this implementation
There are the control module of example 8 digital quantity output points, analog quantity electric current to input 6 tunnels, 1 tunnel of voltage input, 1 tunnel of temperature input.RS-
485 communication interfaces can enable background work personnel as needed to lead to operational order via RS-485 with background communication
Communication interface is sent to after single-chip microcontroller STC12LE5A60S2 is handled and is sent to corresponding relay, to pass through relay
Switching action realizes the switching of corresponding compensation branch.A/D chip CS5463 can acquire voltage signal and 6 tunnels through isolation processing
Current signal and temperature signal are sent to single-chip microcontroller STC12LE5A60S2 after modulus is handled and carry out at CPU analytic operation
Reason, and being sent to from the background by RS-485 communication interface, background work personnel may determine that the signal data that receives so as to
Operational order is enough sent to by single-chip microcontroller STC12LE5A60S2 by RS-485, single-chip microcontroller STC12LE5A60S2 analysis receives
Operational order and control command can be issued to corresponding relay to control the vacuum contactor of corresponding compensation branch road
To realize the switching of corresponding compensation branch.
Preferred embodiment in accordance with the present invention, control module are built-in with 6 low currents connecting with analog-digital converter
Mutual inductor, each small current mutual inductor is connect with one of compensation branch in 6 tunnels compensation branch respectively, to detect each benefit
Repay the current signal of branch.Correspondingly, each compensation branch in 6 tunnels compensation branch is respectively arranged with an operating current mutual inductance
Device, each operating current mutual inductor are connect with a small current mutual inductor respectively.The range of small current mutual inductor of the invention is
0-100mA, the range of operating current mutual inductor are 0-5A.Preferred embodiment in accordance with the present invention, control module is built-in to be become
Depressor and bleeder circuit, for detecting capacitance voltage signal, bleeder circuit is connect with the analog-digital converter.
Preferred embodiment in accordance with the present invention, control module are provided with toggle switch, for setting the observing and controlling mould
The address of block.Installation of the control module in low-voltage compensation capacitor box is installed using standard track formula, and wiring is using removable
Unload formula connecting terminal.When needing to replace control module, new control module is arranged to accordingly with toggle switch
It simultaneously replaces old control module maintenance can be completed in address.Preferably, control module is provided with corresponding with the quantity of relay
LED is used to indicate the output state of corresponding relay.Thickening is painted in pcb board protection in control module, and all devices are wide temperature
Industrial rank, operating temperature: -25~65 DEG C, relative humidity≤90%, 85~106kPa of ambient atmosphere pressure.Communication interface RS-
485 Phototube Couplings, communications protocol use Modbus-RTU, and data are read using communication, and data update can be in the 0.6-1 second
Between set.Preferably, according to live use environment, house dog is can be set in control module of the invention, improves electromagnetism interference
Ability can automatically reset immediately when being generated failure by strong jamming, and former design parameter is kept not malfunction.
Further preferred embodiment according to the present invention, single-chip microcontroller can preset current threshold, voltage threshold
And temperature threshold, when electric current, voltage or temperature reach the threshold value of setting, the folding of Automatic control of single chip microcomputer relay is realized corresponding
Compensate the switching of branch.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of the claim
Subject to enclosing.
Claims (10)
1. a kind of control module for low pressure compensation of submerged arc furnace capacitor box, the low pressure compensation of submerged arc furnace capacitor box is provided with more
A compensation branch characterized by comprising
Analog-digital converter acquires the capacitance current signal of capacitance voltage signal and each compensation branch and carries out at analog-to-digital conversion
Reason；
Single-chip microcontroller is connect with the analog-digital converter；
Communication module, connect with the single-chip microcontroller and and background communication；
Multiple relays, each relay at least part of the multiple relay respectively be set to each compensation branch
Contactor connection in road is switched on or switched off to controlling each compensation branch, the multiple relay respectively with the single-chip microcontroller
Connection；
Power supply is powered for the low pressure compensation of submerged arc furnace capacitor box control module.
2. the control module according to claim 1 for low pressure compensation of submerged arc furnace capacitor box, which is characterized in that the mould
Number converter temperature collection signal simultaneously carries out analog-to-digital conversion process.
3. the control module according to claim 2 for low pressure compensation of submerged arc furnace capacitor box, which is characterized in that the survey
Control module is built-in with the temperature sensor connecting with the analog-digital converter.
4. the control module according to claim 1 for low pressure compensation of submerged arc furnace capacitor box, which is characterized in that the survey
Control module is built-in with multiple small current mutual inductors, each small current mutual inductor respectively with one of benefits in multiple compensation branches
Branch connection is repaid, to detect the current signal of each compensation branch, the multiple small current mutual inductor and the analog-digital converter
Connection.
5. the control module according to claim 2 for low pressure compensation of submerged arc furnace capacitor box, which is characterized in that multiple benefits
Repay each compensation branch in branch and be respectively arranged with operating current mutual inductor, the operating current mutual inductor respectively with it is multiple small
Each small current mutual inductor connection in current transformer.
6. the control module according to claim 1 for low pressure compensation of submerged arc furnace capacitor box, which is characterized in that the survey
Bleeder circuit built in module is controlled, for detecting capacitance voltage signal, the bleeder circuit is connect with the analog-digital converter.
7. the control module according to claim 1 for low pressure compensation of submerged arc furnace capacitor box, which is characterized in that described logical
Interrogating module includes RS-485 communication interface.
8. the control module according to claim 2 for low pressure compensation of submerged arc furnace capacitor box, which is characterized in that the survey
Control module is provided with toggle switch, for setting the address of the control module.
9. special according to claim 1 to the control module for being used for low pressure compensation of submerged arc furnace capacitor box described in any one of 8
Sign is that the analog-digital converter is CS5463 type A/D chip.
10. according to claim 1 to described in any one of 8 be used for low pressure compensation of submerged arc furnace capacitor box control module,
It is characterized in that, the single-chip microcontroller is STC12LE5A60S2 type single-chip microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910655387.7A CN110244154A (en) | 2019-07-19 | 2019-07-19 | Control module for low pressure compensation of submerged arc furnace capacitor box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910655387.7A CN110244154A (en) | 2019-07-19 | 2019-07-19 | Control module for low pressure compensation of submerged arc furnace capacitor box |
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| Publication Number | Publication Date |
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| CN110244154A true CN110244154A (en) | 2019-09-17 |
Family
ID=67893126
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910655387.7A Pending CN110244154A (en) | 2019-07-19 | 2019-07-19 | Control module for low pressure compensation of submerged arc furnace capacitor box |
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Cited By (2)
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| CN112763792A (en) * | 2019-11-06 | 2021-05-07 | 株洲中车时代电气股份有限公司 | Intelligent current sensor and current collection method based on intelligent current sensor |
| CN115078818A (en) * | 2022-06-30 | 2022-09-20 | 上海钧嵌传感技术有限公司 | Current detection device and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763792A (en) * | 2019-11-06 | 2021-05-07 | 株洲中车时代电气股份有限公司 | Intelligent current sensor and current collection method based on intelligent current sensor |
| CN112763792B (en) * | 2019-11-06 | 2022-08-19 | 株洲中车时代电气股份有限公司 | Intelligent current sensor and current acquisition method based on intelligent current sensor |
| CN115078818A (en) * | 2022-06-30 | 2022-09-20 | 上海钧嵌传感技术有限公司 | Current detection device and method |
| CN115078818B (en) * | 2022-06-30 | 2023-10-03 | 上海钧嵌传感技术有限公司 | Current detection device and method |
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