CN110468250A - A kind of LF refining furnace receiving electrode platform safety interlock and control method - Google Patents
A kind of LF refining furnace receiving electrode platform safety interlock and control method Download PDFInfo
- Publication number
- CN110468250A CN110468250A CN201910726068.0A CN201910726068A CN110468250A CN 110468250 A CN110468250 A CN 110468250A CN 201910726068 A CN201910726068 A CN 201910726068A CN 110468250 A CN110468250 A CN 110468250A
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- China
- Prior art keywords
- electrode
- phase
- control cabinet
- plc control
- interlock
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
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- 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
-
- 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
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Details (AREA)
Abstract
The present invention is a kind of LF refining furnace receiving electrode platform safety interlock and control method, belongs to LF external refining equipment technical field.Technical solution: in operative employee not by under three-phase electrode outage condition, computer disconnects power switch by electrode PLC control cabinet, three-phase electrode power-off, while indicator light green light；It when operative employee leaves after to Electrode Operation, is spaced 15 seconds, after operative employee reaches home, three-phase electrode is powered, while indicator light red light is bright.The device of the invention is structurally reasonable, control method is simple and practical, when operative employee forgets that disconnecting high-voltage switch gear enters electrode platform, opens security isolation and inspires power-off interlock behind the door, high-voltage switch gear will disconnect automatically, effectively avoid the electrode starting the arc and the person and equipment breakdown occurs.
Description
Technical field
The present invention is a kind of LF refining furnace receiving electrode platform safety interlock and control method, belongs to LF external refining and sets
Standby technical field.
Background technique
LF furnace is the secondary refining method using electric arc heated as technical characteristics, is heated using graphite electrode, is being heated
In the process, electrode has melting loss, and electrode will affect heating operation after shortening, thus can arrive in process of production receiving electrode platform into
The multiple receiving electrode of row or sliding Electrode Operation are to meet production needs.And LF furnace course of work electric current 25-50KA, voltage 160-
280V, the arc-plasma of generation can achieve 5000-20000 DEG C of superhigh temperature.Forget if operative employee connects, slides electrode process
Note disconnects high-voltage switch gear and entering the operation of receiving electrode platform will cause the electrode starting the arc and the person and equipment breakdown occurs, and has larger
Security risk, similar accident occurred for some iron and steel enterprises.
Summary of the invention
Problem to be solved by this invention is by providing a kind of LF refining furnace receiving electrode platform safety interlock and control
Method processed, it is ensured that LF furnace body is powered off state when operative employee connects, slides electrode operation, to the personal of operative employee and will not set
It is standby to impact, it eliminates safe hidden trouble, solves above-mentioned technical problem existing for prior art.
The technical scheme is that:
A kind of LF refining furnace receiving electrode platform safety interlock includes electrode isolation door lock, electrode isolation door, electrode isolation
Column, signal transmssion line, interlock PLC control cabinet, computer, indicator light, electrode PLC control cabinet, power switch, three-phase electrode；
The isolating door is mounted on isolated column, and isolated column is equipped with signal transmssion line, and electrode isolation door lock is installed on isolating door, with
The isolated column of one end matches；The both ends of electrode isolation door lock are connect with the signal transmssion line in isolated column respectively, signal transmssion line
Connect with interlock PLC control cabinet, interlock PLC control cabinet is connect with computer, computer simultaneously with indicator light and electrode PLC
Control cabinet connection, electrode PLC control cabinet are connect by power switch with three-phase electrode；When the electrode isolation door is closed, electrode
The isolated column that door lock and one end is isolated is connection status, and corresponding three-phase electrode leads to high-voltage electricity；When electrode isolation door is opened, electrode
The isolated column that door lock and one end is isolated is off-state, corresponding three-phase electrode power-off.
It is divided into 15 seconds between the electrode isolation door is closed and three-phase electrode is powered, electrode isolation door is opened and three-phase electricity
Without time interval between the power-off of pole.
When the indicator light is red light, three-phase electrode power switch closure, three-phase electrode leads to high-voltage electricity, and indicator light is green light
When, three-phase electrode power switch disconnects, three-phase electrode power-off.
A kind of LF refining furnace receiving electrode platform safety chain control method, it is flat using a kind of above-mentioned LF refining furnace receiving electrode
Platform safety interlocking, comprises the following steps: in operative employee not by under three-phase electrode outage condition, it is flat that operative employee enters operation
Platform, opens electrode isolation door, the isolated column disconnection of electrode isolation door lock and one end, and cut-off signal is transferred to by signal transmssion line
Interlock PLC control cabinet, interlock PLC control cabinet transmit a signal to computer, and computer is based on the received under signal
Disconnect power switch up to three-phase electrode power supply ON- and OFF- command, and by electrode PLC control cabinet, three-phase electrode power-off refers to simultaneously
Show lamp green light；When operative employee leaves after operating to three-phase electrode, closed electrode isolating door, electrode isolation door lock and one end
Isolated column connection, signal are transferred to computer by signal transmssion line and interlock PLC control cabinet, and computer assigns three-phase electrode electricity
Source close commands；After being spaced 15 seconds, after operative employee reaches home, it is closed power switch by electrode PLC control cabinet,
Three-phase electrode is powered, while indicator light red light is bright.
Beneficial effects of the present invention: the device of the invention is structurally reasonable, and control method is simple and practical, when operative employee forgets to break
When opening high-voltage switch gear and entering electrode platform, to open security isolation and inspire power-off interlock behind the door, high-voltage switch gear will disconnect automatically,
It effectively avoids the electrode starting the arc and the person and equipment breakdown occurs.
Detailed description of the invention
Fig. 1 is LF refining furnace receiving electrode platform safety interlock schematic diagram of the present invention；
In figure: electrode isolation door lock 1, electrode isolation door 2, electrode isolation column 3, signal transmssion line 4, interlock PLC control cabinet
5, computer 6, indicator light 7, electrode PLC control cabinet 8, power switch 9, three-phase electrode 10.
Specific embodiment
A kind of LF refining furnace receiving electrode platform safety interlock includes electrode isolation door lock 1, electrode isolation door 2, electrode
Isolated column 3, signal transmssion line 4, interlock PLC control cabinet 5, computer 6, indicator light 7, electrode PLC control cabinet 8, power switch
9, three-phase electrode 10；The isolating door 2 is mounted on isolated column 3, and isolated column 3 is equipped with signal transmssion line 4, electrode isolation door lock
1 is installed on isolating door 2, matches with the isolated column 3 of one end；The both ends of electrode isolation door lock 1 respectively with the signal in isolated column 3
Transmission line 4 connects, and signal transmssion line 4 is connect with interlock PLC control cabinet 5, and interlock PLC control cabinet 5 and computer 6 connect
It connects, computer 6 is connect with indicator light 7 and electrode PLC control cabinet 8 simultaneously, and electrode PLC control cabinet 8 passes through power switch 9 and three-phase electricity
Pole 10 connects；When the electrode isolation door 2 is closed, the isolated column 3 of electrode isolation door lock 1 and one end is connection status, corresponding
Three-phase electrode 10 leads to high-voltage electricity；When electrode isolation door 2 is opened, the isolated column 3 of electrode isolation door lock 1 and one end is off-state,
Corresponding three-phase electrode 10 powers off.
It is divided into 15 seconds between the electrode isolation door 2 is closed and three-phase electrode 10 is powered, electrode isolation door 2 is opened and three
Without time interval between the power-off of phase electrode 10.
When the indicator light 7 is red light, three-phase electrode power switch 9 is closed, and three-phase electrode 10 leads to high-voltage electricity；Indicator light 7
When for green light, three-phase electrode power switch 9 is disconnected, and three-phase electrode 10 powers off.
A kind of LF refining furnace receiving electrode platform safety chain control method, it is flat using a kind of above-mentioned LF refining furnace receiving electrode
Platform safety interlocking, comprises the following steps: in operative employee not by under 10 outage condition of three-phase electrode, it is flat that operative employee enters operation
Platform, opens electrode isolation door 2, the disconnection of isolated column 3 of electrode isolation door lock 1 and one end, and cut-off signal is passed by signal transmssion line 4
It is defeated by interlock PLC control cabinet 5, interlock PLC control cabinet 5 transmits a signal to computer 6, and computer 6 is according to received
Signal assign 10 power supply ON- and OFF- command of three-phase electrode, and disconnect power switch 9 by electrode PLC control cabinet 8, three-phase electrode
10 power-off, while 7 green light of indicator light；When operative employee leaves after operating to three-phase electrode 10, closed electrode isolating door 2, electricity
Door lock 1 is isolated in pole and the isolated column 3 of one end connects, and signal is transferred to by signal transmssion line 4 and interlock PLC control cabinet 5
Computer 6, computer 6 assign 10 power supply close commands of three-phase electrode；After being spaced 15 seconds, after operative employee reaches home, pass through
Electrode PLC control cabinet 8 is closed power switch 9, and three-phase electrode 10 is powered, while 7 red light of indicator light is bright.
Claims (4)
1. a kind of LF refining furnace receiving electrode platform safety interlock, it is characterised in that: include electrode isolation door lock (1), electrode
Isolating door (2), electrode isolation column (3), signal transmssion line (4), interlock PLC control cabinet (5), computer (6), indicator light (7),
Electrode PLC control cabinet (8), power switch (9) and three-phase electrode (10)；The isolating door (2) is mounted on isolated column (3), every
Signal transmssion line (4) are equipped with from column, electrode isolation door lock (1) is installed on isolating door (2), the isolated column (3) with one end
Match；The both ends of electrode isolation door lock (1) are connect with the signal transmssion line (4) in isolated column respectively, signal transmssion line and chain dress
Set PLC control cabinet (5) connection, interlock PLC control cabinet connect with computer (6), computer (6) at the same with indicator light (7) and electricity
Pole PLC control cabinet (8) connection, electrode PLC control cabinet (8) are connect by power switch (9) with three-phase electrode (10)；The electrode
When isolating door is closed, the isolated column of electrode isolation door lock and one end is connection status, and corresponding three-phase electrode leads to high-voltage electricity；Electrode
When isolating door is opened, the isolated column of electrode isolation door lock and one end is off-state, corresponding three-phase electrode power-off.
2. a kind of LF refining furnace receiving electrode platform safety interlock according to claim 1, it is characterised in that: the electrode
It is divided into 15 seconds between isolating door is closed and three-phase electrode is powered, electrode isolation door was opened between three-phase electrode power-off without the time
Interval.
3. a kind of LF refining furnace receiving electrode platform safety interlock according to claim 1, it is characterised in that: the instruction
When lamp is red light, three-phase electrode power switch closure, three-phase electrode leads to high-voltage electricity, when indicator light is green light, three-phase electrode power supply
Switch disconnects, three-phase electrode power-off.
4. a kind of LF refining furnace receiving electrode platform safety chain control method, using defined by claim 1-3 any one
A kind of LF refining furnace receiving electrode platform safety interlock, characterized by comprising the steps of: in operative employee not by three-phase electricity
Under the outage condition of pole, operative employee enters operating platform, opens electrode isolation door, and the isolated column of electrode isolation door lock and one end is disconnected
It opens, cut-off signal is transferred to interlock PLC control cabinet by signal transmssion line, and interlock PLC control cabinet transmits signal
To computer, signal assigns three-phase electrode power supply ON- and OFF- command to computer based on the received, and makes electricity by electrode PLC control cabinet
Source switch disconnects, three-phase electrode power-off, while indicator light green light；When operative employee leaves after operating to three-phase electrode, close
Electrode isolation door, electrode isolation door lock are connected with the isolated column of one end, and signal is controlled by signal transmssion line and interlock PLC
Cabinet is transferred to computer, and computer assigns three-phase electrode power supply close commands；After being spaced 15 seconds, after operative employee reaches home,
It is closed power switch by electrode PLC control cabinet, three-phase electrode is powered, while indicator light red light is bright.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910726068.0A CN110468250B (en) | 2019-08-07 | 2019-08-07 | Safety interlocking device for LF refining furnace electrode connecting platform and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910726068.0A CN110468250B (en) | 2019-08-07 | 2019-08-07 | Safety interlocking device for LF refining furnace electrode connecting platform and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110468250A true CN110468250A (en) | 2019-11-19 |
| CN110468250B CN110468250B (en) | 2021-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910726068.0A Active CN110468250B (en) | 2019-08-07 | 2019-08-07 | Safety interlocking device for LF refining furnace electrode connecting platform and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110468250B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122827A (en) * | 2014-08-07 | 2014-10-29 | 衢州迪升工业设计有限公司 | Physical protection linkage circuit |
| CN104142646A (en) * | 2014-08-08 | 2014-11-12 | 衢州迪升工业设计有限公司 | Physical protection interlocking circuit with acousto-optic warning function |
| CN104158522A (en) * | 2014-08-12 | 2014-11-19 | 衢州迪升工业设计有限公司 | Personal protection interlock circuit in work area |
| CN205620460U (en) * | 2016-05-19 | 2016-10-05 | 攀钢集团攀枝花钢钒有限公司 | LF stove circuit detecting system |
-
2019
- 2019-08-07 CN CN201910726068.0A patent/CN110468250B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122827A (en) * | 2014-08-07 | 2014-10-29 | 衢州迪升工业设计有限公司 | Physical protection linkage circuit |
| CN104142646A (en) * | 2014-08-08 | 2014-11-12 | 衢州迪升工业设计有限公司 | Physical protection interlocking circuit with acousto-optic warning function |
| CN104158522A (en) * | 2014-08-12 | 2014-11-19 | 衢州迪升工业设计有限公司 | Personal protection interlock circuit in work area |
| CN205620460U (en) * | 2016-05-19 | 2016-10-05 | 攀钢集团攀枝花钢钒有限公司 | LF stove circuit detecting system |
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| Publication number | Publication date |
|---|---|
| CN110468250B (en) | 2021-10-29 |
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