CN106541094A - The electromagnetic agitation pure water cooling system of closed and control method - Google Patents
The electromagnetic agitation pure water cooling system of closed and control method Download PDFInfo
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- CN106541094A CN106541094A CN201510608673.XA CN201510608673A CN106541094A CN 106541094 A CN106541094 A CN 106541094A CN 201510608673 A CN201510608673 A CN 201510608673A CN 106541094 A CN106541094 A CN 106541094A
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Abstract
The invention provides the electromagnetic agitation pure water cooling system and control method of a kind of closed; which utilizes water supply tank from outside water inlet; container of the vacuum tank as sealing and circulating water system; water loss can effectively be prevented; cooling water system pressure stability can be caused; so that electromagnetic agitation cooling circulating water is separate with supply moisturizing, electrical conductivity can be reduced automatically when cooling water system electrical conductivity is high, and magnetic stirrer equipment can be effectively protected in exception or accident.
Description
Technical field
The present invention relates to continuous casting of metal and slab electromagnetic agitation field, in particular it relates to the electromagnetism of closed is stirred
Mix pure water cooling system and control method.
Background technology
Continuous casting electromagnetic stirring device is in the nature a kind of magnetic field generator that can produce travelling-magnetic-field, according to its installation position
Put, can be divided into：
- M-EMS (M-EMS), agitator are arranged on inside crystallizer cavity；
- two chill space electromagnetic stirrings (S-EMS), agitator are arranged on outside strand；
- solidification end electromagnetic agitation (F-EMS), for side, round billet continuous casting, agitator is arranged on outside strand.
Either M-EMS, S-EMS, or F-EMS, can produce when magnetic stirrer passes through low frequency, high current
Substantial amounts of Joule heat, its own iron loss of silicon steel sheet need to consume the radiant heat of certain heat and continuous casting billet to magnetic stirrer.
Main heat is accomplished by magnetic stirrer in terms of these three a stable and reliable cooling water system.Such as
Fruit magnetic stirrer cannot get good cooling effect, by the insulation of the coil of infringement electromagnetic agitation, cause short circuit,
Serious conditions can burn coil.
Cooling of the stable and reliable cooling water system except guarantee under normal circumstances to magnetic stirrer, it is also to be ensured that electric
The service life of magnetic stirrer apparatus body under special circumstances does not suffer damage, such as cooling water system failure, whole
It is required to effective water safety system to protect magnetic stirrer under the abnormal conditions such as the unexpected power failure of continuous casting line
Service life.So the water safety system of the magnetic stirrer under abnormal environment is particularly important.
Jing is retrieved, do not it is found that the technical scheme of present invention offer is disclosed.
The content of the invention
For defect of the prior art, it is an object of the invention to provide a kind of electromagnetic agitation pure water cooling of closed
System.
A kind of electromagnetic agitation pure water cooling system of the closed provided according to the present invention, including：Plate type heat exchanger 48,
Y-type filter C49, y-type filter D60, pressure gauge C61, thermometer C62, thermometer D63, four pressure gauges
64th, electromagnetic flowmeter B65；
Y-type filter D60, pressure gauge are provided with the pipeline of the heat absorbing conduit entrance for accessing plate type heat exchanger 48
C61, thermometer C62；
Thermometer D63, four pressure gauges are provided with from the pipeline that the heat absorbing conduit outlet of plate type heat exchanger 48 is picked out
64th, electromagnetic flowmeter B65；
The pipeline for accessing the entrance of the heat dissipation pipeline of plate type heat exchanger 48 is used to receive the cooling water time of magnetic stirrer
Water, and it is provided with y-type filter C49；
Pipeline from the outlet contact of the heat dissipation pipeline of plate type heat exchanger 48 is for providing cooling water to magnetic stirrer.
According to a kind of electromagnetic stirring system that the present invention is provided, including water cooling system, water cooling system is using above-mentioned
Closed electromagnetic agitation pure water cooling system.
Preferably, also including voltage-stabilizing system；
Voltage-stabilizing system includes：Gas filtration air relief valve 11, electromagnetic valve A12, manual ball valve 13, pressure transmitter
14th, relief valve 15, electromagnetic valve B16, vacuum tank 17, magnetic double level gauge A18, electromagnetic valve C19；
Electromagnetic valve C19 is provided with the inlet pipeline of vacuum tank 17；
Gas filtration air relief valve 11, electricity are disposed with along upstream to downstream direction on the air inlet pipeline of vacuum tank 17
Magnet valve A12, manual ball valve 13, electromagnetic valve B16；
Relief valve 15 is provided with the gas exhaust piping of vacuum tank 17；
Pressure transmitter 14 is used for the pressure for gathering vacuum tank 17；
Magnetic double level gauge A18 is used for the liquid level for gathering vacuum tank 17；
The outlet of vacuum tank 17 is communicated to magnetic stirrer the pipeline for transmitting cooling water.
Preferably, voltage-stabilizing system also includes：Stainless steel water tank 40, magnetic double level gauge B41, booster pump B42, Y
Type filter B43, check-valves 44；
On pipeline between the entrance of the outlet of stainless steel water tank 40 to the inlet pipeline of vacuum tank 17, along upstream
To downstream direction, booster pump B42, y-type filter B43, check-valves 44 are disposed with；
Magnetic double level gauge B41 is used for the liquid level for gathering stainless steel water tank 40.
Preferably, also including deionization system；
Deionization system carries out deionization process to the cooling water for being supplied to magnetic stirrer；
The deionization system, including：Conductivity meter 21, air relief valve 22, y-type filter A23, electromagnetic valve D24,
Deionization tank 25, deionization pipeline, chilled(cooling) water supply (CWS) pipeline；
The entrance of deionization pipeline is connected at the G2 of chilled(cooling) water supply (CWS) pipeline；
The outlet of deionization pipeline be connected to chilled(cooling) water supply (CWS) pipeline at the G1 of G2 upstreams；
Conductivity meter 21 is arranged at the downstream G3 positioned at G2 of chilled(cooling) water supply (CWS) pipeline；
On deionization pipeline, along entrance to Way out, be disposed with air relief valve 22, y-type filter A23,
Electromagnetic valve D24, deionization tank 25；
Cooling water tube road direction magnetic stirrer transmits cooling water.
Preferably, also including water safety system, wherein, the water safety system includes magnetic stirrer, also includes：
Temperature transmitter 31, normally-closed pneumatic stop valve A32, normally opened pneumatic cut-off valve A33, electromagnetic flowmeter A34, often
Close pneumatic cut-off valve B35, normally opened pneumatic cut-off valve B36, normally-closed pneumatic stop valve C37, booster pump A38；
Normally-closed pneumatic stop valve A32 is provided with first cooling water inlet pipe road A1 of magnetic stirrer；
Normally opened pneumatic cut-off valve A33 is provided with second cooling water inlet pipe road A2 of magnetic stirrer；
Be provided with first CWR road B1 of magnetic stirrer temperature transmitter 31, electromagnetic flowmeter A34,
Normally-closed pneumatic stop valve B35；Wherein, temperature transmitter 31 is used for the cooling water return water temperature for gathering magnetic stirrer,
Electromagnetic flowmeter 34 is used for the cooling water circling water flow rate for gathering magnetic stirrer；
Normally opened pneumatic cut-off valve B36 is provided with second CWR road B2 of magnetic stirrer；
Normally-closed pneumatic stop valve C37, booster pump are provided with 3rd CWR road B3 of magnetic stirrer
A38。
Preferably, the second cooling water inlet pipe road A2 is for the crystallizer cooling water for coming from crystallizer is transferred to
Magnetic stirrer；3rd CWR road B3 of magnetic stirrer for by the cooling water of magnetic stirrer return
Water is transferred to crystallizer cooling system.
Preferably, the first cooling water inlet pipe road A1 is used for the cooling water for receiving water cooling system offer；First is cold
But water water return pipeline B1 is for the cooling water backwater of magnetic stirrer is exported to water cooling system；
The water cooling system is magnetic stirrer cooling water supply.
Preferably, the outlet of chilled(cooling) water supply (CWS) pipeline is connected to the first cooling water inlet pipe road A1 of magnetic stirrer
Entrance.
The electromagnetic agitation pure water cooling system or above-mentioned electricity of a kind of above-mentioned closed provided according to the present invention
The control method of magnetic stirring system, comprises the steps：
When electromagnetic flowmeter B65 detects flow less than flow threshold, warning information is sent.
Compared with prior art, the present invention has following beneficial effect：
The cooling water system that magnetic stirrer can be effectively protected of the invention breaks down, whole continuous casting line is dashed forward
So the abnormal conditions such as power failure are got off the life-span of magnetic stirrer so as to magnetic stirrer equipment damage under abnormal conditions
It is minimized, can be widely applied in continuous casting electromagnetic stirrer cooling water system.
Description of the drawings
Detailed description non-limiting example made with reference to the following drawings by reading, the further feature of the present invention,
Objects and advantages will become more apparent upon：
Fig. 1 is the structural representation of the present invention.
Fig. 2 is method of the present invention flow chart.
In figure：
11- gas filtration air relief valve
12- electromagnetic valve A
13- manual ball valves
14- pressure transmitters
15- relief valve
16- electromagnetic valve B
17- vacuum tanks
18- magnetic double level gauges A
19- electromagnetic valve C
21- conductivity meters
22- air relief valve
23-Y type filter A
24- electromagnetic valve D
25- deionization tanks
31- temperature transmitters
32- normally-closed pneumatic stop valve A
The normally opened pneumatic cut-off valve A of 33-
34- electromagnetic flowmeter A
35- normally-closed pneumatic stop valve B
The normally opened pneumatic cut-off valve B of 36-
37- normally-closed pneumatic stop valve C
38- booster pump A
40- stainless steel water tanks
41- magnetic double level gauges B
42- booster pump B
43-Y type filter B
44- check-valves
46- pure water water circulating pump A
47- pure water water circulating pump B
48- plate type heat exchangers
49-Y type filter C
50- temperature Table As
51- pressure Table As
52- pressure gauge B
53- thermometer B
60-Y type filter D
61- pressure gauge C
62- thermometer C
63- thermometer D
64- pressure gauge D
65- electromagnetic flowmeter B
System need interface be：
TOP1- purified water inlet interfaces
TOP2- compressed air inlet port interfaces
Cooling water intake interface outside TOP3-
Cooling water outlet interface outside TOP4-
TOP5- crystallizer cooling water water inlet interfaces
TOP6- iron sheet ditch water discharge interfaces
TOP7- crystallizer cooling water water outlet mouthpieces
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to those skilled in the art
Member further understands the present invention, but the invention is not limited in any way.It should be pointed out that the common skill to this area
For art personnel, without departing from the inventive concept of the premise, some changes and improvements can also be made.These belong to
Protection scope of the present invention.
According to the present invention provide a kind of electromagnetic stirring system, including water safety system, deionization system, water cooling system,
Voltage-stabilizing system.
Water safety system is using a kind of water safety system of protection continuous casting electromagnetic stirrer.
Deionization system is using a kind of system for ensureing electromagnetic stirring cooling water electrical conductivity.
A kind of electromagnetic agitation pure water cooling system of the water cooling system using closed.
Voltage-stabilizing system is using a kind of system for ensureing electromagnetic stirring cooling water pressure stability.
The water safety system of the protection continuous casting electromagnetic stirrer, including magnetic stirrer, also include：Temperature transmitter 31,
Normally-closed pneumatic stop valve A32, normally opened pneumatic cut-off valve A33, electromagnetic flowmeter A34, normally-closed pneumatic stop valve B35, often
Open pneumatic cut-off valve B36, normally-closed pneumatic stop valve C37, booster pump A38；
Normally-closed pneumatic stop valve A32 is provided with first cooling water inlet pipe road A1 of magnetic stirrer；
Normally opened pneumatic cut-off valve A33 is provided with second cooling water inlet pipe road A2 of magnetic stirrer；
Be provided with first CWR road B1 of magnetic stirrer temperature transmitter 31, electromagnetic flowmeter A34,
Normally-closed pneumatic stop valve B35；Wherein, temperature transmitter 31 is used for the cooling water return water temperature for gathering magnetic stirrer, electricity
Magnetic flowmeter 34 is used for the cooling water circling water flow rate for gathering magnetic stirrer；
Normally opened pneumatic cut-off valve B36 is provided with second CWR road B2 of magnetic stirrer；
Normally-closed pneumatic stop valve C37, booster pump A38 are provided with 3rd CWR road B3 of magnetic stirrer.
Preferably, the second cooling water inlet pipe road A2 is for being transferred to electromagnetism by the crystallizer cooling water for coming from crystallizer
Agitator；3rd CWR road B3 of magnetic stirrer is for the cooling water backwater of magnetic stirrer is transferred to
Crystallizer cooling system.
Preferably, the first cooling water inlet pipe road A1 is used for the cooling water for receiving water cooling system offer；First cooling water
Water return pipeline B1 is for the cooling water backwater of magnetic stirrer is exported to water cooling system；
The water cooling system is magnetic stirrer cooling water supply.
The deionization system carries out deionization process to the cooling water for being supplied to magnetic stirrer；
The deionization system, including：Conductivity meter 21, air relief valve 22, y-type filter A23, electromagnetic valve D24,
Deionization tank 25, deionization pipeline, chilled(cooling) water supply (CWS) pipeline；
The entrance of deionization pipeline is connected at the G2 of chilled(cooling) water supply (CWS) pipeline；
The outlet of deionization pipeline be connected to chilled(cooling) water supply (CWS) pipeline at the G1 of G2 upstreams；
Conductivity meter 21 is arranged at the downstream G3 positioned at G2 of chilled(cooling) water supply (CWS) pipeline；
On deionization pipeline, along entrance to Way out, air relief valve 22, y-type filter A23, electricity are disposed with
Magnet valve D24, deionization tank 25；
Cooling water tube road direction magnetic stirrer transmits cooling water.
Preferably, the outlet of chilled(cooling) water supply (CWS) pipeline is connected to entering for the first cooling water inlet pipe road A1 of magnetic stirrer
Mouthful.
The voltage-stabilizing system carries out stable to the pressure for being supplied to the cooling water of magnetic stirrer；
The voltage-stabilizing system, including：Gas filtration air relief valve 11, electromagnetic valve A12, manual ball valve 13, pressure transmitter
14th, relief valve 15, electromagnetic valve B16, vacuum tank 17, magnetic double level gauge A18, electromagnetic valve C19,
Electromagnetic valve C19 is provided with the inlet pipeline of vacuum tank 17；
Gas filtration air relief valve 11, electromagnetic valve is disposed with along upstream to downstream direction on the air inlet pipeline of vacuum tank 17
A12, manual ball valve 13, electromagnetic valve B16；
Relief valve 15 is provided with the gas exhaust piping of vacuum tank 17；
Pressure transmitter 14 is used for the pressure for gathering vacuum tank 17；
Magnetic double level gauge A18 is used for the liquid level for gathering vacuum tank 17；
The outlet of vacuum tank 17 is communicated to magnetic stirrer the pipeline for transmitting cooling water.
Preferably, the voltage-stabilizing system also includes：Stainless steel water tank 40, magnetic double level gauge B41, booster pump B42, Y
Type filter B43, check-valves 44；
On pipeline between the entrance of the outlet of stainless steel water tank 40 to the inlet pipeline of vacuum tank 17, along upstream under
Roam all around the would is to being disposed with booster pump B42, y-type filter B43, check-valves 44；
Magnetic double level gauge B41 is used for the liquid level for gathering stainless steel water tank 40.
The water cooling system is magnetic stirrer cooling water supply；
The water cooling system, including：Plate type heat exchanger 48, y-type filter C49, y-type filter D60, pressure gauge
C61, thermometer C62, thermometer D63, four pressure gauges 64, electromagnetic flowmeter B65；
Access plate type heat exchanger 48 heat absorbing conduit entrance pipeline on be provided with y-type filter D60, pressure gauge C61,
Thermometer C62；
Be provided with from the pipeline that the outlet of the heat absorbing conduit of plate type heat exchanger 48 is picked out thermometer D63, four pressure gauges 64,
Electromagnetic flowmeter B65；
The pipeline for accessing the entrance of the heat dissipation pipeline of plate type heat exchanger 48 is used to receive the cooling water backwater of magnetic stirrer,
And it is provided with y-type filter C49；
Pipeline from the outlet contact of the heat dissipation pipeline of plate type heat exchanger 48 is for providing cooling water to magnetic stirrer.
The water safety system or above-mentioned electromagnetic agitation of the above-mentioned protection continuous casting electromagnetic stirrer provided according to the present invention
System control method, including following either step：
When the water cooling system no-failure operation for magnetic stirrer cooling water supply：Make normally-closed pneumatic stop valve A32,
Normally-closed pneumatic stop valve B35 maintains the original state constant；Make normally opened pneumatic cut-off valve A33, normally opened pneumatic cut-off valve B36,
Normally-closed pneumatic stop valve C37 is closed, and makes booster pump A38 close；
When the water cooling system for magnetic stirrer cooling water supply is in off-position：Make normally-closed pneumatic stop valve A32,
Normally-closed pneumatic stop valve B35 is closed, and is made normally-closed pneumatic stop valve C37, booster pump A38 close, is made normally opened pneumatic cut-out
Valve A33, normally opened pneumatic cut-off valve B36 are opened；So as to make crystallizer cooling water flow into electricity from normally opened pneumatic cut-off valve A33
Magnetic stirrer carries out equipment cooling, and then the normally opened pneumatic cut-off valve B36 of Jing flow out；
When the water cooling system for magnetic stirrer cooling water supply is in non-off-position, and temperature transmitter 31 is adopted
The cooling water return water temperature of collection is less than stream more than the cooling water return flow gathered by temperature threshold or electromagnetic flowmeter A34
During amount threshold value：Make normally-closed pneumatic stop valve A32, normally-closed pneumatic stop valve B35 close, make normally opened pneumatic cut-off valve B36
Close, make normally opened pneumatic cut-off valve A33, normally-closed pneumatic stop valve C37 open, make booster pump A38 run；So as to make
Crystallizer cooling water flows into magnetic stirrer from normally opened pneumatic cut-off valve A33 and carries out equipment cooling, then by booster pump A38,
Jing normally-closed pneumatic stop valve C37 return to crystallizer cooling system.
A kind of system of the guarantee electromagnetic stirring cooling water electrical conductivity provided according to the present invention or the control of electromagnetic stirring system
Method processed, comprises the steps：
Using conductivity meter 21 to the hydromining collection electrical conductivity at chilled(cooling) water supply (CWS) pipeline G3；
If electrical conductivity is more than conductivity threshold, makes electromagnetic valve D24 open, make at chilled(cooling) water supply (CWS) pipeline G3
Divide water along deionization pipeline, successively through air relief valve 22, y-type filter A23, into deionization tank 25.
The system or electromagnetic stirring system of a kind of guarantee electromagnetic stirring cooling water pressure stability provided according to the present invention
Control method, including following either step：
When the pressure of the vacuum tank 17 that pressure transmitter 14 is collected is more than upper pressure limit threshold value, electromagnetic valve B16 is made to beat
Open, so that the air in vacuum tank 17 is discharged by relief valve 15；
When the pressure of the vacuum tank 17 that pressure transmitter 14 is collected is less than low pressure limit threshold value, electromagnetic valve B16 is made to close
Close, make electromagnetic valve A12 open, make gas Jing gas filtrations air relief valve 11 QI invigorating be carried out into vacuum tank 17；
When the liquid level of the vacuum tank 17 that magnetic double level gauge A18 is collected is higher than high threshold, electromagnetic valve C19 is made to close
Close；
When the liquid level of the vacuum tank 17 that magnetic double level gauge A18 is collected is less than low level threshold value, electromagnetic valve C19 is made to beat
Open；
A kind of electromagnetic agitation pure water cooling system of the closed provided according to the present invention or the control of electromagnetic stirring system
Method, comprises the steps：
When electromagnetic flowmeter B65 detects flow less than flow threshold, warning information is sent.
In a kind of system for ensureing electromagnetic stirring cooling water electrical conductivity, signal monitoring is carried out using conductivity meter 21,
The signal that monitoring is obtained enters PLC, after the electrical conductivity actual value of the collection of conductivity meter 21 is higher than default value, outer cold electricity
Magnetic stirring electrical conductivity alarm setting value is 50 μ s/cm, shuts down 80 μ s/cm of setting value；Interior cold electromagnetic agitation electrical conductivity report
Alert setting value is 150 μ s/cm, shuts down 200 μ s/cm of setting value.When the conductivity value for gathering is more than alarm setting value,
Signal alarm is carried out, the opening of electromagnetic valve D24 is automatically controlled by PLC so that water is from bypass through air relief valve 22, Y
Type filter A23, into deionization tank 25, the water for having deionization resin, such sealing and circulating in deionization tank 25 exists
Certain hour internal conductance rate will be reduced, and after 30min, electrical conductivity PLC if less than setting value closes electromagnetic valve D24.If
Higher than setting value, then PLC controls electromagnetic valve D24 is stayed open electrical conductivity, after the 30min if less than setting value PLC
Electromagnetic valve D24 is closed, water system is normally run；If electrical conductivity remains above setting value, water system sends fault-signal, stops
Only electromagnetic agitation operation.If any process electrical conductivity of water system operation sends event higher than setting value, water system PLC is shut down
Barrier signal, stops magnetic stirrer operation.
Deionization system draws part water from pure water water circulating pump exit, after deionization system, is returning to pure water circulation
At pump water inlet, the water in such deionization system is also circulation, so as to ensure whole pure water circulating system in cyclic process
In have portion of pure water flow into, flow out deionization system, reach whole pure water circulating system electrical conductivity reduce.
In a kind of system for ensureing electromagnetic stirring cooling water pressure stability, ensure electromagnetism using vacuum tank 17 and stir
Stablizing for cooling water system pressure is mixed, vacuum tank middle and lower part is cooling water, and top is compressed air, it is ensured that system pressure is steady
Determine and control vacuum tank liquid level, prevent compressed air from the water system of flowing is entered by vacuum tank.
Magnetic double level gauge A18, for gathering vacuum tank liquid level；Pressure transmitter 14, for gathering electromagnetism voltage stabilizing tank pressure
Power；Booster pump B42, for pure water is sent in vacuum tank water inlet from tank outlet, for electromagnetic agitation cooling water system
System is recycled；
After voltage stabilizing pressure tank exceedes vacuum tank maximum pressure, and under 16 non-normal working of electromagnetic valve, relief valve 15 oneself
Open, pressure release effect is carried out for protecting vacuum tank.Manual ball valve 13 is the ball valve for facilitating on-site manual aerofluxuss.
Electromagnetic valve B16, by PLC controls, PLC collection pressure transmitters 14, when the pressure value of pressure transmitter 14 exceedes
During vacuum tank operating pressure setting value, PLC controls its opening, air in vacuum tank is discharged, so as to reduce in vacuum tank
Gas pressure, PLC collection pressure transmitters 14, when pressure is less than vacuum tank operating pressure setting value, PLC controls its pass
Close；
Electromagnetic valve A12, by PLC controls, PLC collection pressure transmitters 14, when the pressure value of pressure transmitter 14 is less than
During vacuum tank operating pressure setting value, PLC controls which and automatically opens up, the external compression air at TOP2, Jing gas filtrations
Air relief valve 11, electromagnetic valve A12 enter vacuum tank, carry out QI invigorating.
When PLC collects 17 liquid level of vacuum tank is less than the 60% of 18 range of magnetic double level gauge, and magnetic turnover panel liquid
When position 41 liquid levels of meter are higher than the 30% of its range, PLC automatically controls booster pump B42 operations, controls electromagnetic valve C19
Open；
When magnetic double level gauge B41 liquid level less than its range 30%, PLC alarm water tank hydropenias；
Pure water takes out water by booster pump B42 from 40 exit of stainless steel water tank, through miscellaneous in medium for removing
Matter y-type filter B43, flows in the entrance of vacuum tank 17 through check-valves 44, electromagnetic valve C19；
When it is higher than the 95% of magnetic double level gauge A18 range that PLC collects 17 liquid level of vacuum tank, PLC is controlled automatically
Booster pump B42 processed stops, and control electromagnetic valve C19 is closed, and now moisturizing action is completed.
When the pressure transmitter 14 that PLC is collected on vacuum tank 17 is less than 0.5bar, the liquid level of vacuum tank liquidometer A18
Higher than range 50% when, electromagnetic valve B16 is opened, and compressed air enters vacuum tank, carry out vacuum tank ftercompction；
When the pressure transmitter 14 that PLC is collected on vacuum tank 17 is less than 0.5bar, and now vacuum tank liquid level is less than liquid
When the 50% of A18 ranges is counted in position, moisturizing action is first carried out, when liquid level higher than range 50%, be further continued for carrying out ftercompction
Action；
Compressed air enters vacuum tank 17 by electromagnetic valve B16, and voltage stabilizing pressure tank rises, when the pressure of pressure transmitter 14
Power is higher than 1.2bar or QI invigorating more than 2mins, ftercompction electromagnetic valve B16 closing stopping ftercompctions；
In system operation when the pressure of pressure transmitter 14 is higher than 1.5bar, PLC control electromagnetic valve B16 are opened, surely
Pressure tank starts pressure release, and when the pressure of pressure release to pressure transmitter 14 is less than 0.8bar, PLC control electromagnetic valve B16 are closed.
So the liquid level of vacuum tank can be just maintained between 60%～95% range of magnetic double level gauge, and pressure is maintained at
Between 0.5bar～1.5bar.
In a kind of electromagnetic agitation pure water cooling system of closed, using pure water as moisturizing medium, specifically,
Pure water medium is required：PH value PH, 6.5 ＜ PH ＜ 8.5, electrical conductivity C, 10 ＜ C ＜ 100 (us/cm), float
Quantity≤20ppm, total amount containing Fe≤0.5ppm, permanent filtering specification≤50um, ecologic active particle：Nothing.
TOP1 points, are outside pure water seam, and outside water is the water inlet water source of system, and ball-cock assembly is carried in water tank to be carried out
Automatic water supplement.Magnetic double level gauge B41 is housed on water tank, its transducing signal enters PLC, and PLC collection high water tanks are highly believed
Number.
Have in system for maintaining whole sealing and circulating water system Pressure behaviour balance and being used to ensure whole sealing and circulating storage
The vacuum tank 17 of water container, thereon equipped with equipped with magnetic double level gauge A18, this transducing signal enters PLC, and PLC collections are steady
Pressure tank liquid level signal.
When PLC collects vacuum tank liquid level is less than the 60% of magnetic double level gauge A18 range, and magnetic turnover panel liquid level
When meter B41 liquid levels are higher than the 30% of its range, PLC automatically controls booster pump B42 operations, controls electromagnetic valve C19
Open；
When magnetic double level gauge B41 liquid level less than its range 30%, PLC alarm water tank hydropenias；
Pure water takes out water by booster pump B42 from 40 exit of stainless steel water tank, through miscellaneous in medium for removing
Matter y-type filter B43, flows in the entrance of vacuum tank 17 through check-valves 44, electromagnetic valve C19；
When it is higher than the 95% of magnetic double level gauge A18 range that PLC collects vacuum tank liquid level, PLC is automatically controlled
Booster pump B42 stops, and control electromagnetic valve C19 is closed, and now moisturizing action is completed.
In vacuum tank, its exit of water Jing flows into pure water water circulating pump A46, pure water water circulating pump B47 porch.Via pure
Water circulation exit of pump is flowed in whole cooling water system.
Pure water water circulating pump A46, pure water water circulating pump B47 by the way of the using and the reserved, by the way of the using and the reserved
It is in order to when wherein one pure water water circulating pump failure, a pure water water circulating pump is automatically switched by PLC controls in addition
With come into operation.Pure water water circulating pump is used for the water circulation for realizing whole closed cooling water system.
Pure water is exported via pure water water circulating pump A46, pure water water circulating pump B47, and exit is installed for showing that water is pumped out
The thermometer B53 of temperature at mouthful, the pressure gauge B52 of pump outlet pressure, Jing normally-closed pneumatic stop valves A32 flow into electricity
In magnetic stirrer；
Electromagnetic flowmeter 34, temperature transmitter 31 are housed on magnetic stirrer water return pipeline, magnetic stirrer backwater is carried out
Flow, temperature monitoring, and electromagnetic flowmeter A34,31 signal of temperature transmitter enter PLC；
Thermometer A50 is installed on water return pipeline, pressure gauge A51, Jing y-type filter C49, plate type heat exchanger 48 times are pure
Water circulation water pump A46, pure water water circulating pump B47 porch.
Mounting plate type heat exchanger 48, can produce substantial amounts of Joule heat when being and magnetic stirrer being passed through low frequency, high current, its
Itself iron loss of silicon steel sheet need to consume the radiant heat of certain heat and continuous casting billet to magnetic stirrer, by outside cooling water, plate
Formula heat exchanger carries out heat exchange, and pure water circulating water temperature is reduced.
When closed water system works, PLC automatically controls in pure water water circulating pump A46, pure water water circulating pump B47
Platform water pump operation, control normally-closed pneumatic stop valve A32 are opened, and control normally-closed pneumatic stop valve B35 is opened；
Pure water is exported via pure water water circulating pump, and Jing normally-closed pneumatic stop valves A32 flows into magnetic stirrer, and pure water flows out electricity
Magnetic stirrer is flowed out via electromagnetic flowmeter A34, normally-closed pneumatic stop valve B35, Jing y-type filter C49, board-like is changed
Hot device 48 returns to pure water water circulating pump porch, and during this, PLC gathers magnetic stirrer by electromagnetic flowmeter A34
Circling water flow rate, gathers magnetic stirrer return water temperature by temperature transmitter 31.
31 signal of PLC collecting temperatures transmitter, electromagnetic flowmeter A34 signals, when flow is more than or waits for magnetic stirrer
In the 95% of magnetic stirrer metered flow, electromagnetic stirring cooling water flow system flow is normal；When flow is that magnetic stirrer is little
In or equal to the 90% of magnetic stirrer metered flow, and more than or equal to the 80% of magnetic stirrer metered flow, or work as
When 31 signal value of temperature transmitter is more than or equal to the 120% of setting value, or electromagnetic stirring cooling water flow system flow is reported to the police, electricity
Magnetic stirrer needs power-off immediately in being powered.
It is that, at outside cooling water inlet, cooling water is equipped with thermometer C62 via y-type filter D60, on pipeline at TOP3,
Pressure gauge C61, flows into plate type heat exchanger 48, and thermometer D63, pressure gauge D64, cooling water Jing are housed at outlet conduit
By electromagnetic flowmeter B65, flow back to outside TOP4 at cooling water backwater.
Electromagnetic flowmeter B65 is used for detecting outside cooling water flow, and this signal enters PLC, for detecting outside cooling water
Whether flow is normal.When electromagnetic flowmeter B65 flows are less than or equal to the 90% of outside cooling metered flow, electromagnetic agitation
Cooling system flow alarm function outside cooling water system, magnetic stirrer need power-off.
In whole cooling water system cyclic process, moisturizing is carried out to system by vacuum tank, it is whole it is cooling water circulation during
System does not have any common factor with the external world, belongs to the electromagnetic stirring cooling water system of a closed.
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in
Particular implementation is stated, those skilled in the art can make a variety of changes within the scope of the claims or change,
This has no effect on the flesh and blood of the present invention.In the case where not conflicting, in embodiments herein and embodiment
Feature arbitrarily can be mutually combined.
Claims (10)
1. the electromagnetic agitation pure water cooling system of a kind of closed, it is characterised in that include：Plate type heat exchanger (48),
Y-type filter C (49), y-type filter D (60), pressure gauge C (61), thermometer C (62), thermometer D (63),
Four pressure gauges (64), electromagnetic flowmeter B (65)；
Y-type filter D (60), pressure gauge are provided with the pipeline of the heat absorbing conduit entrance for accessing plate type heat exchanger (48)
C (61), thermometer C (62)；
Thermometer D (63), four pressure gauges are provided with from the pipeline that the heat absorbing conduit outlet of plate type heat exchanger (48) is picked out
(64), electromagnetic flowmeter B (65)；
The pipeline for accessing the entrance of the heat dissipation pipeline of plate type heat exchanger (48) is used to receive the cooling water backwater of magnetic stirrer,
And it is provided with y-type filter C (49)；
Pipeline from the outlet contact of the heat dissipation pipeline of plate type heat exchanger (48) is for providing cooling water to magnetic stirrer.
2. a kind of electromagnetic stirring system, including water cooling system, it is characterised in that water cooling system adopts claim 1
The electromagnetic agitation pure water cooling system of described closed.
3. electromagnetic stirring system according to claim 2, it is characterised in that also including voltage-stabilizing system；
Voltage-stabilizing system includes：Gas filtration air relief valve (11), electromagnetic valve A (12), manual ball valve (13), pressure become
Send device (14), relief valve (15), electromagnetic valve B (16), vacuum tank (17), magnetic double level gauge A (18), electromagnetism
Valve C (19)；
Electromagnetic valve C (19) is provided with the inlet pipeline of vacuum tank (17)；
On the air inlet pipeline of vacuum tank (17) along upstream to downstream direction be disposed with gas filtration air relief valve (11),
Electromagnetic valve A (12), manual ball valve (13), electromagnetic valve B (16)；
Relief valve (15) is provided with the gas exhaust piping of vacuum tank (17)；
Pressure transmitter (14) is for gathering the pressure of vacuum tank (17)；
Magnetic double level gauge A (18) is for gathering the liquid level of vacuum tank (17)；
The outlet of vacuum tank (17) is communicated to magnetic stirrer the pipeline for transmitting cooling water.
4. electromagnetic stirring system according to claim 3, it is characterised in that voltage-stabilizing system also includes：Rustless steel
Water tank (40), magnetic double level gauge B (41), booster pump B (42), y-type filter B (43), check-valves (44)；
On pipeline between the entrance of the outlet of stainless steel water tank (40) to the inlet pipeline of vacuum tank (17), along upper
Swim to downstream direction, be disposed with booster pump B (42), y-type filter B (43), check-valves (44)；
Magnetic double level gauge B (41) is for gathering the liquid level of stainless steel water tank (40).
5. electromagnetic stirring system according to claim 2, it is characterised in that also including deionization system；
Deionization system carries out deionization process to the cooling water for being supplied to magnetic stirrer；
The deionization system, including：Conductivity meter (21), air relief valve (22), y-type filter A (23), electromagnetism
Valve D (24), deionization tank (25), deionization pipeline, chilled(cooling) water supply (CWS) pipeline；
The entrance of deionization pipeline is connected at the G2 of chilled(cooling) water supply (CWS) pipeline；
The outlet of deionization pipeline be connected to chilled(cooling) water supply (CWS) pipeline at the G1 of G2 upstreams；
Conductivity meter (21) is arranged at the downstream G3 positioned at G2 of chilled(cooling) water supply (CWS) pipeline；
On deionization pipeline, along entrance to Way out, be disposed with air relief valve (22), y-type filter A (23),
Electromagnetic valve D (24), deionization tank (25)；
Cooling water tube road direction magnetic stirrer transmits cooling water.
6. electromagnetic stirring system according to claim 2, it is characterised in that also including water safety system, wherein,
The water safety system includes magnetic stirrer, also includes：Temperature transmitter (31), normally-closed pneumatic stop valve A (32),
Normally opened pneumatic cut-off valve A (33), electromagnetic flowmeter A (34), normally-closed pneumatic stop valve B (35), normally opened pneumatic cut-out
Valve B (36), normally-closed pneumatic stop valve C (37), booster pump A (38)；
Normally-closed pneumatic stop valve A (32) is provided with first cooling water inlet pipe road A1 of magnetic stirrer；
Normally opened pneumatic cut-off valve A (33) is provided with second cooling water inlet pipe road A2 of magnetic stirrer；
Be provided with first CWR road B1 of magnetic stirrer temperature transmitter (31), electromagnetic flowmeter A (34),
Normally-closed pneumatic stop valve B (35)；Wherein, temperature transmitter (31) is for gathering the cooling water backwater temperature of magnetic stirrer
Degree, electromagnetic flowmeter (34) is for gathering the cooling water circling water flow rate of magnetic stirrer；
Normally opened pneumatic cut-off valve B (36) is provided with second CWR road B2 of magnetic stirrer；
Normally-closed pneumatic stop valve C (37), booster pump A are provided with 3rd CWR road B3 of magnetic stirrer
(38)。
7. electromagnetic stirring system according to claim 6, it is characterised in that the second cooling water inlet pipe road A2 is used
In the crystallizer cooling water for coming from crystallizer is transferred to magnetic stirrer；3rd CWR of magnetic stirrer
Road B3 is for being transferred to crystallizer cooling system by the cooling water backwater of magnetic stirrer.
8. electromagnetic stirring system according to claim 6, it is characterised in that the first cooling water inlet pipe road A1 is used
In the cooling water for receiving water cooling system offer；First CWR road B1 is for by the cooling of magnetic stirrer
Water backwater is exported to water cooling system；
The water cooling system is magnetic stirrer cooling water supply.
9. electromagnetic stirring system according to claim 6, it is characterised in that chilled(cooling) water supply (CWS) pipeline goes out
Mouth is connected to the entrance of the first cooling water inlet pipe road A1 of magnetic stirrer.
10. a kind of electromagnetic agitation pure water cooling system of the closed described in claim 1 or claim 2 institute
The control method of the electromagnetic stirring system stated, it is characterised in that comprise the steps：
When electromagnetic flowmeter B (65) detects flow less than flow threshold, warning information is sent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510608673.XA CN106541094B (en) | 2015-09-22 | 2015-09-22 | Protect the system and control method of electromagnetic stirring cooling water |
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| CN201510608673.XA CN106541094B (en) | 2015-09-22 | 2015-09-22 | Protect the system and control method of electromagnetic stirring cooling water |
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| CN106541094B CN106541094B (en) | 2019-01-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112268620A (en) * | 2020-09-08 | 2021-01-26 | 北京首钢自动化信息技术有限公司 | Cooling device and cooling method of infrared scanning temperature measurement system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59220265A (en) * | 1983-05-30 | 1984-12-11 | Kobe Steel Ltd | Pressure control device for mold cooling water and coil cooling water of electromagnetic stirrer in casting mold for continuous casting machine |
| JPS6049849A (en) * | 1983-08-26 | 1985-03-19 | Kawasaki Heavy Ind Ltd | Device for supplying mold cooling water for horizontal continuous casting |
| JP2006183496A (en) * | 2004-12-27 | 2006-07-13 | Jfe Steel Kk | Operation method of pump for supplying fluid |
| CN201900243U (en) * | 2010-12-08 | 2011-07-20 | 江苏泰富兴澄特殊钢有限公司 | Safety system for circulating water of electromagnetic stirrer |
| CN203489709U (en) * | 2013-08-16 | 2014-03-19 | 宝山钢铁股份有限公司 | Fire door cooling device |
| CN203755383U (en) * | 2013-12-31 | 2014-08-06 | 江苏申源特钢有限公司 | Pressure-stable water supply device for crystallizer of continuous casting machine |
| CN103957683A (en) * | 2014-05-13 | 2014-07-30 | 瑟帕斯（天津）水系统科技有限公司 | Sealed type circulating cooling system suitable for power electronic equipment |
| CN204353440U (en) * | 2014-12-30 | 2015-05-27 | 北京京诚科林环保科技有限公司 | The cooling water system of conticaster electromagnetic mixing apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112268620A (en) * | 2020-09-08 | 2021-01-26 | 北京首钢自动化信息技术有限公司 | Cooling device and cooling method of infrared scanning temperature measurement system |
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