CN108627738A - A kind of on-Line Monitor Device and monitoring method for monitoring electroslag furnace water-cooled cable - Google Patents
A kind of on-Line Monitor Device and monitoring method for monitoring electroslag furnace water-cooled cable Download PDFInfo
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- CN108627738A CN108627738A CN201710156011.2A CN201710156011A CN108627738A CN 108627738 A CN108627738 A CN 108627738A CN 201710156011 A CN201710156011 A CN 201710156011A CN 108627738 A CN108627738 A CN 108627738A
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- 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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
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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
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/058—Safety, monitoring
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Testing And Monitoring For Control Systems (AREA)
Abstract
The invention discloses a kind of on-Line Monitor Devices and monitoring method for monitoring electroslag furnace water-cooled cable, it is connected with water-cooled cable, including current detecting part, signal adapter, the substations PLC input channel, PLC programmable controller and computer, current detecting part has several, its input terminal is connected with every water-cooled cable respectively, signal adapter also has several, the output end of current detecting part is connected with the input terminal of corresponding signal converter respectively, the output end of signal adapter is connected with the input terminal of the substations PLC input channel, the output end of the substations PLC input channel is connected with the input terminal of PLC programmable controller, PLC programmable controller carries out operation to input signal, and operation result is transmitted to record and the display that corresponding information is carried out on computer.The present invention carries out real-time process monitoring to water-cooled cable, detects and judges trouble location in time, avoid smelting discontinuity events caused by due to water-cooled cable is broken.
Description
Technical field
The present invention relates to electroslag furnace smelting techniques, more specifically to a kind of for monitoring electroslag furnace water-cooled cable
On-Line Monitor Device and monitoring method.
Background technology
The principle of electroslag furnace Electrode for remelting in auxiliary electrode 1 and steel ingot to be smelted 2 when smelting as shown in Figure 1, pass to big electricity
Stream so that recrystallize cooling in a crystallizer after smelting steel ingot 2 according to certain speed fusing, formed with new matter
Measure the steel ingot of performance.Electric current comes from the short net copper bar 3 of transformer, passes sequentially through water-cooled cable copper sleeve 4,5, water-cooled cable sheet respectively
Body 6,7, water-cooled cable copper sleeve 8,9, converges at confluence copper bar 10, and by transition piece 11, auxiliary electrode 1, arrival waits for
Smelt steel ingot 2.
A complete water-cooled cable being made of water-cooled electric cable joint 4,8 and water-cooled cable ontology 6, and by water-cooled cable
Connector 5,9 is identical with the water-cooled cable that water-cooled cable ontology 7 is constituted, and constitutes Two bors d's oeuveres structure.Lead to cooling water in water-cooled cable,
Cooling water is intake from cooling water inlet pipe 12, is discharged from cooling water outlet pipe 13, is cooled down to water-cooled cable ontology 6, another
Root is also identical.
Water-cooled cable ontology 6 is made of the annealed copper strand wire of 703 nominal diameter 0.75mm, compound establishment, and every 19 are
One, totally 37 strands, the per share interior metal bellows that sets plays a supportive role and leads to cooling water, and another water-cooled cable ontology 7 has phase
Same structure.
By the electric current of the short net copper bar of transformer 3 up to 24000A in electroslag furnace energization smelting process, in the short net of transformer
It is shunted by water-cooled cable copper sleeve 4,5 at copper bar 3, due to circuit symmetrical, two-way size of current is equal or close to equal (difference
Less than one thousandth).
It can be seen that important component one of of the water-cooled cable as electroslag furnace, operation conditions directly affect electroslag product
Quality and production capacity, be to control electroslag furnace to smelt the important link for jumping electric (interruption) accident.
In actual production process, water-cooled cable frequently perturbs bending and the corruption of cooling water with the movement of electrode in smelting
Erosion, water-cooled cable can gradually occur it is stranded, when two water-cooled cables occur stranded number it is asymmetric when, then lead on two water-cooled cables
Difference will occur for the electric current crossed, and stranded several differences are bigger, then current difference is bigger, with the accumulation of produce load, when wherein
One it is completely stranded when, then all current capacities are undertaken by another electric current, will result in the cable overload operation, in temperature
Rise aggravation, to aggravate its electric conductivity deterioration, can also occur in a short time completely it is stranded, to cause production disruption.Electricity at present
The maintenance policy of slag hearth water-cooled cable is typically all by the way of periodic replacement, due to ingot shape, the steel smelted by electroslag furnace
The factors such as the structure type and site environment of the differences such as kind and rhythm of production and water-cooled cable itself, using electroslag furnace water cooling
The mode of cable periodic replacement, easily cause the component crosses repair or deficient repair status, it is difficult to the state of water-cooled cable into
The effective management and control of row impacts maintenance cost (spare part and maintenance human load) and the state of equipment.
Invention content
In view of the above defects of the prior art, the object of the present invention is to provide one kind for monitoring electroslag furnace water cooling
The on-Line Monitor Device and monitoring method of cable carry out real-time process monitoring to water-cooled cable, and detection and judgement in time is out of order
Position avoids smelting discontinuity events caused by due to water-cooled cable is broken.
To achieve the above object, the present invention adopts the following technical scheme that：
On the one hand, a kind of on-Line Monitor Device for monitoring electroslag furnace water-cooled cable, is connected, including electricity with water-cooled cable
Flow detection part, signal adapter, the substations PLC input channel, PLC programmable controller and computer, current detecting part tool
Have several, input terminal is connected with every water-cooled cable respectively, and signal adapter also has several, the output of current detecting part
End is connected with the input terminal of corresponding signal converter respectively, and the output end of signal adapter is defeated with the substations PLC input channel
Enter end to be connected, the output end of the substations PLC input channel is connected with the input terminal of PLC programmable controller, PLC programmable controller
Operation is carried out to input signal, and operation result is transmitted to record and the display for carrying out corresponding information on computer.
Further include indicating member, be connected with the output end of PLC programmable controller, if PLC programmable controller calculates
When water-cooled cable breaks down or is broken, then alarm signal is sent out by indicating member.
The current detecting part includes current measuring element and current measuring element leading-out terminal, current measuring element
It is set on corresponding water-cooled cable, and is exported signal to the substations PLC input channel by current measuring element leading-out terminal.
The current detecting part is checking of great current sensor.
The checking of great current sensor is Rogowski coil transmitter.
The indicating member is acoustic-optic alarm.
On the other hand, a kind of on-line monitoring method for monitoring electroslag furnace water-cooled cable, includes the following steps：
S1. each current detecting part is sleeved on the water-cooled cable of corresponding electroslag furnace, current detecting part will be every
The real time detection signal of root water-cooled cable is transferred to by current measuring element leading-out terminal on corresponding signal adapter；
S2. each signal adapter is by signal concentration of transmissions to the substations PLC input channel；
The substations S3.PLC input channel will concentrate all signal uniform transmissions of all signal adapters to PLC PLC technologies
Device；
S4.PLC programmable controllers, which are concentrated, carries out data conversion, internal arithmetic, and carries out state according to the threshold values of setting
Differentiate, then operation result is subjected to corresponding information record and display on computers.
Further include S5, if PLC programmable controller determines corresponding water-cooled cable state not in the threshold range of setting
It is interior, then audible and visible alarm is sent out by indicating member, maintenance personal replaces the water-cooled cable.
In the step S2, pass through profinet networks between each signal adapter and the substations PLC input channel
Connection.
In the above technical solution, a kind of on-line monitoring for monitoring electroslag furnace water-cooled cable provided by the present invention
Device and monitoring method avoid smelting discontinuity events caused by water-cooled cable is broken, resulting mass loss are declined
To zero.Foreseeability management of the present invention is used in electroslag factory, water-cooled cable can be avoided to owe repair and spend showing for repair
As occurring, the spare parts cost of water-cooled cable and corresponding maintenance cost can be decreased obviously.
Description of the drawings
Fig. 1 is the schematic diagram of existing water-cooled cable working condition；
Fig. 2 is the frame diagram of control principle of the present invention；
Fig. 3 is the schematic diagram that current detecting part is connected with water-cooled cable in the present invention.
Specific implementation mode
The technical solution further illustrated the present invention with reference to the accompanying drawings and examples.
Shown in Fig. 2 and Fig. 3, a kind of on-line monitoring for monitoring electroslag furnace water-cooled cable provided by the present invention
Device is connected with water-cooled cable 6,7, including current detecting part 14, signal adapter 15, the substations PLC input channel 16, PLC
Programmable controller 17 and computer 18, current detecting part 14 have it is several, according to the water-cooled cable quantity at electroslag vehicle scene
And set, the input terminal of each current detecting part 14 is connected with every water-cooled cable respectively, and signal adapter 15 also has number
A, the output end of the respective settings according to the quantity of current detecting part 14, current detecting part 14 turns with corresponding signal respectively
The input terminal of parallel operation 15 is connected, and the output end of signal adapter 15 is connected with the input terminal of the substations PLC input channel 16, by
The output end of the substations PLC input channel 16 is centralized and unified to transmit a signal to PLC programmable controller 17, then may be programmed by PLC
Controller 17 carries out operation to signal, and operation result is transmitted to record and the display that corresponding information is carried out on computer 18.
Preferably, further including indicating member 19, it is connected with the output end of PLC programmable controller 17, if PLC programmable controls
When device 17 processed calculates water-cooled cable and breaks down or be broken, then alarm signal is sent out by indicating member 19, indicating member is optional
With acoustic-optic alarm, preferably staff can be prompted.
Preferably, the current detecting part 14 includes current measuring element 141 and current measuring element leading-out terminal
142, current measuring element 141 passes through current measuring element leading-out terminal to be set on corresponding water-cooled cable 6,7
142 export signal to the substations PLC input channel 15, the selection checking of great current sensor of current detecting part 14, and high current
Detection sensor selects Rogowski coil transmitter again.
Checking of great current sensor selects Rogowski coil transmitter (BR-AI) again, can convert tested high current signal
The standard signal for exporting 4-20mA has the good linearity and accuracy due to iron-core-free, and secondary open circuit is also not present and causes
The danger of high voltage, the structure type of Rogowski coil transmitter are flexible open-close type, and flexible coil is sleeved on water cooling electricity when installation
On cable, " screw-type " docking is carried out in joint, is used in combination fixture to be fixed, the output signal of Rogowski coil transmitter is then transmitted
To signal adapter 15.
On the other hand, a kind of on-line monitoring method for monitoring electroslag furnace water-cooled cable, includes the following steps：
S1., current measuring element 141 on each current detecting part 14 is sleeved on to the water cooling electricity of corresponding electroslag furnace
On cable 6,7, the real time detection signal of every water-cooled cable 6,7 is passed through current measuring element exit by current measuring element 141
Son 142 is transferred on corresponding signal adapter 15；
S2. each signal adapter 15 is by signal concentration of transmissions to the substations PLC input channel 16；
The substations S3.PLC input channel 16 will concentrate 15 all signal uniform transmissions of all signal adapters to may be programmed to PLC
Controller 17；
S4.PLC programmable controllers 17, which are concentrated, carries out data conversion, internal arithmetic, and carries out shape according to the threshold values of setting
State differentiates, then operation result is carried out corresponding information record and display on computer 18.
Preferably, further including S5, if PLC programmable controller 17 determines corresponding water-cooled cable 6,7 states are not being set
In the threshold range set, then audible and visible alarm is sent out by indicating member 19, maintenance personal replaces the water-cooled cable 6,7.
Different gears can be divided into for the setting of threshold values, and to different stalls for there is different counter-measures, because
Water-cooled cable it is stranded when gradually occur, two water-cooled cables always have wherein one first occur it is completely stranded, when two water
When the current difference of cold cable is more than 5000A (stranded several differences about 10% or so), it should cause to pay close attention to；When two water-cooled cables
Current difference when being more than 8000A (stranded several differences about 20% or so), it should maintenance is arranged more according to the condition of production in a short time
It changes；When the current difference of two water-cooled cables is more than 10000A (stranded several differences about 30% or so), it is necessary to arrange inspection immediately
Replacement is repaiied, does not allow the operation that is powered again, otherwise smelts the very risky of midway power-off.Above-mentioned threshold values can also combine actual production
Situation advanced optimizes adjustment.
Preferably, in the step S2, signal adapter 15 is arranged nearby by current detecting part 14, can shorten letter
Wiring distance number between source and signal adapter 15 shortens the length of control cable, improves anti-interference ability and convenient for dimension
Shield；Each pass through profinet network connections between signal adapter 15 and the substations PLC input channel 16 so that wiring is convenient
Simply, it is not easy to be interfered by site environment；And do not make any changes to the PLC system of original electroslag furnace, it is easy for construction, reduce item
The complexity that mesh is implemented.
It is the host computer self-control software configured using existing electroslag furnace that the present invention, which carries out water-cooled cable on line real-time monitoring then,
(such as iFIX) increases water-cooled cable on line real-time monitoring function in man-machine interface, the present invention is made to melt with electroslag furnace robot control system(RCS)
It closes, and real-time state monitoring and abnormal determination is carried out according to pre-set water-cooled cable fault distinguishing algorithm (model), in time
The component for the cable that is out of order is prejudged, and is classified progress failure (hidden danger) alarm and informs, the reality of electroslag furnace water-cooled cable can be extended
Service life is finally avoided that caused by water-cooled cable is broken and smelts discontinuity events.
Although water-cooled cable replacement cost is very high, with due to its completely it is stranded caused by smelt interrupt and caused by quality
It is again inappreciable for loss.However, for plant maintenance personnel, it is also its this worker to reduce maintenance of equipment cost
One of make, for enterprise, consideration is totle drilling cost, and pursuit is value maximization.Using the present invention, to water-cooled cable shape
State is monitored in real time, its state is predicted, and reduces the replacement of blindness, is being prevented due to the completely stranded caused quality of water-cooled cable
Under the premise of loss, water-cooled cable replacement cost is reduced.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention,
And be not used as limitation of the invention, as long as in the spirit of the present invention, the change to embodiment described above
Change, modification will all be fallen within the scope of claims of the present invention.
Claims (9)
1. a kind of on-Line Monitor Device for monitoring electroslag furnace water-cooled cable is connected with water-cooled cable, which is characterized in that including
Current detecting part, signal adapter, the substations PLC input channel, PLC programmable controller and computer, current detecting part
With several, input terminal is connected with every water-cooled cable respectively, signal adapter also have it is several, current detecting part it is defeated
Outlet is connected with the input terminal of corresponding signal converter respectively, the output end of signal adapter with the substations PLC input channel
Input terminal is connected, and the output end of the substations PLC input channel is connected with the input terminal of PLC programmable controller, PLC PLC technologies
Device carries out operation to input signal, and operation result is transmitted to record and the display that corresponding information is carried out on computer.
2. a kind of on-Line Monitor Device for monitoring electroslag furnace water-cooled cable as described in claim 1, which is characterized in that also
Including indicating member, it is connected with the output end of PLC programmable controller, if PLC programmable controller calculates water-cooled cable hair
When raw failure or fracture, then alarm signal is sent out by indicating member.
3. a kind of on-Line Monitor Device for monitoring electroslag furnace water-cooled cable as described in claim 1, which is characterized in that institute
The current detecting part stated includes current measuring element and current measuring element leading-out terminal, and current measuring element is set in accordingly
Water-cooled cable on, and signal is exported to the substations PLC input channel by current measuring element leading-out terminal.
4. a kind of on-Line Monitor Device for monitoring electroslag furnace water-cooled cable as claimed in claim 3, which is characterized in that institute
The current detecting part stated is checking of great current sensor.
5. a kind of on-Line Monitor Device for monitoring electroslag furnace water-cooled cable as claimed in claim 4, which is characterized in that institute
The checking of great current sensor stated is Rogowski coil transmitter.
6. a kind of on-Line Monitor Device for monitoring electroslag furnace water-cooled cable as claimed in claim 2, which is characterized in that institute
The indicating member stated is acoustic-optic alarm.
7. a kind of on-line monitoring method for monitoring electroslag furnace water-cooled cable, which is characterized in that include the following steps：
S1. each current detecting part is sleeved on the water-cooled cable of corresponding electroslag furnace, current detecting part is by every water
The real time detection signal of cold cable is transferred to by current measuring element leading-out terminal on corresponding signal adapter；
S2. each signal adapter is by signal concentration of transmissions to the substations PLC input channel；
S3. the substations PLC input channel will concentrate all signal uniform transmissions of all signal adapters to PLC programmable controller；
S4. PLC programmable controller, which is concentrated, carries out data conversion, internal arithmetic, and carries out state according to the threshold values of setting and sentence
Not, then by operation result corresponding information record and display are carried out on computers.
8. a kind of on-line monitoring method for monitoring electroslag furnace water-cooled cable as claimed in claim 7, which is characterized in that also
Pass through police if PLC programmable controller determines corresponding water-cooled cable state not in the threshold range of setting including S5
Show that component sends out audible and visible alarm, maintenance personal replaces the water-cooled cable.
9. a kind of on-line monitoring method for monitoring electroslag furnace water-cooled cable as claimed in claim 7, which is characterized in that institute
In the step S2 stated, pass through profinet network connections between each signal adapter and the substations PLC input channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710156011.2A CN108627738A (en) | 2017-03-16 | 2017-03-16 | A kind of on-Line Monitor Device and monitoring method for monitoring electroslag furnace water-cooled cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710156011.2A CN108627738A (en) | 2017-03-16 | 2017-03-16 | A kind of on-Line Monitor Device and monitoring method for monitoring electroslag furnace water-cooled cable |
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| CN108627738A true CN108627738A (en) | 2018-10-09 |
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| CN201710156011.2A Pending CN108627738A (en) | 2017-03-16 | 2017-03-16 | A kind of on-Line Monitor Device and monitoring method for monitoring electroslag furnace water-cooled cable |
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Cited By (2)
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| CN109387719A (en) * | 2018-12-10 | 2019-02-26 | 湖南金天钛业科技有限公司 | A kind of DC water cooled cable use state detection device and detection method |
| JP2020118481A (en) * | 2019-01-21 | 2020-08-06 | 大同特殊鋼株式会社 | Deterioration detection method for water-cooled cable |
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Effective date of registration: 20200526 Address after: 200940 room 1277, building 216, 1269 Shuishui Road, Baoshan District, Shanghai Applicant after: Baowu Special Metallurgy Co., Ltd Address before: 200940 No. 1269, Fisheries Road, Shanghai, Baoshan District Applicant before: BAOSTEEL SPECIAL STEEL Co.,Ltd. |
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Application publication date: 20181009 |