CN106180622B - A kind of dynamic judgment method and system of secondary cooling nozzle of continuous casting working condition - Google Patents
A kind of dynamic judgment method and system of secondary cooling nozzle of continuous casting working condition Download PDFInfo
- Publication number
- CN106180622B CN106180622B CN201610564446.6A CN201610564446A CN106180622B CN 106180622 B CN106180622 B CN 106180622B CN 201610564446 A CN201610564446 A CN 201610564446A CN 106180622 B CN106180622 B CN 106180622B
- Authority
- CN
- China
- Prior art keywords
- circuit
- nozzle
- water flow
- pressure
- piple
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
- B22D11/225—Controlling or regulating processes or operations for cooling cast stock or mould for secondary cooling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles (AREA)
Abstract
The present invention provides the dynamic judgment method and system of a kind of secondary cooling nozzle of continuous casting working condition, including：In continuous casting production process, according to the pressure and practical water flow in setpoint frequency measurement circuit；According to the relational model of the pressure and water flow of the pressure in circuit and determination, the theoretical water flow in the circuit is calculated；According to the theoretical water flow and practical water flow in the circuit, the momentary operational condition in the circuit is determined；In set period of time before the correspondence moment for determining momentary operational condition, the frequency for each momentary operational condition that the circuit occurs is counted；And the highest momentary operational condition of the frequency is determined as to the working condition in the circuit；According to the working condition of nozzle in the working condition determination circuit in circuit.In the embodiment of the present invention, it is not only able in real time determine the working condition of nozzle in circuit in continuous casting production process；And it can preferably inhibit data fluctuations in continuous casting production process, data exception to the final influence for determining result.
Description
Technical field
The present invention relates to metallurgy industry continuous casting technical fields, more particularly to a kind of secondary cooling nozzle of continuous casting working condition
Dynamic judgment method and system.
Background technique
Continuous casting is the important ring in steel production, and the heat transfer theory schematic diagram of continuous casting is as shown in Figure 1, its main process is
For the molten steel of high temperature by the strong cold certain thickness green shell of formation inside crystallizer cooling zone, inside remains as liquid molten steel.From knot
The slab come out in brilliant device cooling zone, into after secondary cooling zone, (operating) water nozzle or carbonated drink atomizer it is strong it is cold under, continue cold
But cooling is until internal molten steel solidifies completely.In the cooling procedure of slab, slab and support roller heat transfer take away about 15%
Total amount of heat；Casting billet surface radiant heat transfer takes away about 25% total amount of heat；Air-water spray cooling takes away about 40% total amount of heat；It is cold
But water heating take away about 20% total amount of heat, it can be seen that cooling water amounted to by different modes can take away about 60% it is total
Heat, therefore, cooling water heat-transfer effect decide the process of setting of slab, and finally influence the quality of slab.
The water spray process of continuous casting two cold mainly uses nozzle to realize, nozzle be (operating) water nozzle or nozzle for atomizing water with air, but by
In the particularity of continuous casting secondary cooling water circulation and use condition, typically results in nozzle and blocking or leakage occurs.On the one hand, since two is cold
Water system is open type system, and secondary cooling water can directly contact in process of production with various equipment, iron scale, metallic particles and
Iundustrial oil can enter secondary cooling water system with cooling water, and such impurity stickiness is larger, be easily attached to cooling water circulating pipe,
On filter and water equipment, increase the resistance of ducting；If being adhered at di-cold spray nozzle, it will cause spray nozzle cloggings.In addition, making
With constantly being recycled in secondary cooling water system due to cooling water in the process, the contact with environment is frequent, the change of water temperature and water velocity
Change, water evaporation etc. will cause the variation of inorganic ion content in cooling water, and organic substance can then be concentrated；Cooling tower and cold (heat)
Well is influenced by various external factor factors such as (for example, sunlight, dust debris) descending slowly and lightly in outdoor and is passed through on the way
Device structure and many factors such as material comprehensive function, may cause the generation of scale, and it is made to be attached to secondary cooling water
In each pipeline of system and equipment.If secondary cooling water water quality deterioration, cannot be in time to water to carrying impurity or generating the degree of scale
When matter is adjusted, it will affect spraying effect of the secondary cooling water at di-cold spray nozzle, spray nozzle clogging will be caused when serious.Another party
Face, since secondary cooling nozzle of continuous casting is using under the environment of high temperature and humidity, nozzle erosion is serious, is equally the ring as locating for nozzle
Border narrow space is unfavorable for manually carrying out inspection, nozzle is caused to cannot get due maintenance, and the burn into aging of nozzle is serious, spray
Mouth mechanical properties decrease, in use, via the impact of high pressure secondary cooling water, so that nozzle is damaged, the leakage of pipeline water flow.By
This can all change the secondary cooling water distribution of casting billet surface, influence the heat transfer of slab as it can be seen that whether spray nozzle clogging or leak
Journey leads to slab non-uniform temperature, eventually leads to quality problems, therefore, carries out in time to the working condition in conticaster circuit
Determine the working condition therefore, it is determined that the nozzle in the circuit, and maintenance personnel is notified to safeguard, guarantees the normal work of nozzle
As the strong guarantee that state is to continuous casting billet quality.
Currently, main problem existing for the existing online judgment method of secondary cooling nozzle of continuous casting working condition includes：(1) party
Method is only applicable to casting latter stage, can not achieve in continuous casting production process and determines in real time the working condition of nozzle；(2) should
Method determines that result is directly determined as the working condition of nozzle for what is obtained each time, cannot preferably inhibit continuous casting in this way
The influence of data fluctuations, data exception to final judgement result in the process.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of secondary cooling nozzle of continuous casting work shapes
The dynamic judgment method and system of state are not only able to realize the working condition for determining nozzle in continuous casting production process in real time, and
And it can preferably inhibit data fluctuations in continuous casting production process, data exception to the final influence for determining result.
In order to achieve the above objects and other related objects, the embodiment of the present invention provides a kind of secondary cooling nozzle of continuous casting working condition
Dynamic judgment method pressure in the circuit is determined according to the corresponding relationship of the pressure of nozzle each in circuit and water flow
With the relational model of water flow；This method further includes：
In continuous casting production process, the pressure and practical water flow in the circuit are measured according to setpoint frequency；
According to the relational model of the pressure in the circuit and the pressure and water flow, the theoretical water flow in the circuit is calculated
Amount；
According to the theoretical water flow in the circuit and the practical water flow, the momentary operational condition in the circuit is determined；
In set period of time before the correspondence moment for the momentary operational condition for determining the circuit, the circuit is gone out
The frequency of existing each momentary operational condition is counted；And the highest momentary operational condition of the frequency is determined as to the work in the circuit
Make state；
The working condition of nozzle in the circuit is determined according to the working condition in the circuit.
Preferably, the momentary operational condition includes：Blocked state, normal condition, slightly leaks shape at slight blocked state
State, leak condition；
The theoretical water flow and the practical water flow according to the circuit, determines the instantaneous work shape in the circuit
State, including：
The theoretical water flow in the circuit and the reduced value of the practical water flow are obtained according to following formula：
Wherein, Fpiple_calFor the theoretical water flow in the circuit, Fpiple_actualFor the practical water flow in the circuit,
For the theoretical water flow F in the circuitpiple_calWith the practical water flow Fpiple_actualReduced value；
If the reduced valueGreater than preset first threshold, then the momentary operational condition in the circuit is determined to block shape
State；
If the reduced valueLess than or equal to preset first threshold, and it is greater than preset second threshold, then described in judgement
The momentary operational condition in circuit is slight blocked state；
If the reduced valueLess than or equal to preset second threshold, and it is greater than preset third threshold value, then described in judgement
The momentary operational condition in circuit is normal condition；
If the reduced valueLess than or equal to preset third threshold value, and it is greater than preset 4th threshold value, then described in judgement
The momentary operational condition in circuit is slight leak condition；
If the reduced valueLess than or equal to preset 4th threshold value, then determine that the momentary operational condition in the circuit is
Leak condition；
Wherein, the first threshold is greater than the second threshold, and the second threshold is greater than the third threshold value, and institute
Third threshold value is stated greater than the 4th threshold value.
Preferably, described according to the pressure of nozzle each in circuit and the corresponding relationship of water flow, it determines in the circuit
The relational model of pressure and water flow, including：
The corresponding relationship of the pressure and water flow of each nozzle in the circuit is determined according to following formula：
Fnozzle=A1×Pnozzle 0.5
Wherein, PnozzleFor the pressure of each nozzle in the circuit, FnozzleFor the theory of each nozzle in the circuit
Water flow, A1For fitting coefficient；
Alternatively, determining the corresponding relationship of the pressure and water flow of each nozzle in the circuit according to following formula：
Fnozzle=A2×Pnozzle 0.5+B2
Wherein, PnozzleFor the pressure of each nozzle in the circuit, FnozzleFor the theory of each nozzle in the circuit
Water flow, A2For fitting coefficient, B2For correction term；
According to the corresponding relationship of the pressure of nozzle each in circuit and water flow, determined in the circuit according to following formula
The relational model of pressure and water flow：
Fpiple_cal=D × m × (A1×Ppiple)0.5
Wherein, Fpiple_calFor the theoretical water flow in the circuit, PpipleFor the pressure in the circuit, A1For each nozzle
Fitting coefficient, D is correction factor, and m is the nozzle quantity in the circuit；
Alternatively, determining the relational model of pressure and water flow in the circuit according to following formula：
Fpiple_cal=D × m × (A2×Ppiple+B2)0.5
Wherein, Fpiple_calFor the theoretical water flow in the circuit, PpipleFor the pressure in the circuit, A2For each nozzle
Fitting coefficient, B2For the correction term of each nozzle, D is correction factor, and m is the nozzle quantity in the circuit.
Preferably, the correction factor obtains in the following manner：
When determining the working condition in the circuit for normal condition, the practical water flow in the circuit is measured in the case where setting pressure
Amount, and according to the reason of each nozzle under the corresponding relationship of the pressure of nozzle each in the circuit and water flow calculating corresponding pressure
By water flow；
According to the practical water flow in the circuit and the theoretical water flow of each nozzle, and corrected according to following formula
Coefficient：
Wherein, D is correction factor, Fpiple_actualFor the practical water flow in the circuit, FnozzleIt is every in the circuit
The theoretical water flow of a nozzle, m are the nozzle quantity in the circuit.
Preferably, the setpoint frequency is 0.5HZ, correspondingly, set period of time before the current time be 30~
60S。
According to the above method, the embodiment of the invention provides a kind of dynamics of secondary cooling nozzle of continuous casting working condition to determine system
System, the system include：Determining module, measurement module, computing module, the first determination module, the second determination module, third determine mould
Block；Wherein,
The determining module, described in determining according to the pressure of nozzle each in circuit and the corresponding relationship of water flow
The relational model of pressure and water flow in circuit；
The measurement module, for measuring the pressure and reality in the circuit according to setpoint frequency in continuous casting production process
Border water flow；
The computing module, for calculating according to the pressure in the circuit and the relational model of the pressure and water flow
The theoretical water flow in the circuit；
First determination module determines institute for the theoretical water flow and the practical water flow according to the circuit
State the momentary operational condition in circuit；
Second determination module, for before the correspondence moment of the momentary operational condition for determining the circuit
In set period of time, the frequency for each momentary operational condition that the circuit occurs is counted；And it is the frequency is highest instantaneous
Working condition is determined as the working condition in the circuit；
The third determination module, for determining the work shape of nozzle in the circuit according to the working condition in the circuit
State.
Preferably, the momentary operational condition includes：Blocked state, normal condition, slightly leaks shape at slight blocked state
State, leak condition；
First determination module is specifically used for：
The theoretical water flow in the circuit and the reduced value of the practical water flow are obtained according to following formula：
Wherein, Fpiple_calFor the theoretical water flow in the circuit, Fpiple_actualFor the practical water flow in the circuit,
For the theoretical water flow F in the circuitpiple_calWith the practical water flow Fpiple_actualReduced value；
If the reduced valueGreater than preset first threshold, then the momentary operational condition in the circuit is determined to block shape
State；
If the reduced valueLess than or equal to preset first threshold, and it is greater than preset second threshold, then described in judgement
The momentary operational condition in circuit is slight blocked state；
If the reduced valueLess than or equal to preset second threshold, and it is greater than preset third threshold value, then described in judgement
The momentary operational condition in circuit is normal condition；
If the reduced valueLess than or equal to preset third threshold value, and it is greater than preset 4th threshold value, then described in judgement
The momentary operational condition in circuit is slight leak condition；
If the reduced valueLess than or equal to preset 4th threshold value, then determine that the momentary operational condition in the circuit is
Leak condition；
Wherein, the first threshold is greater than the second threshold, and the second threshold is greater than the third threshold value, and institute
Third threshold value is stated greater than the 4th threshold value.
Preferably, the determining module is specifically used for：
The corresponding relationship of the pressure and water flow of each nozzle in the circuit is determined according to following formula：
Fnozzle=A1×Pnozzle 0.5
Wherein, PnozzleFor the pressure of each nozzle in the circuit, FnozzleFor the theory of each nozzle in the circuit
Water flow, A1For fitting coefficient；
Alternatively, determining the corresponding relationship of the pressure and water flow of each nozzle in the circuit according to following formula：
Fnozzle=A2×Pnozzle 0.5+B2
Wherein, PnozzleFor the pressure of each nozzle in the circuit, FnozzleFor the theory of each nozzle in the circuit
Water flow, A2For fitting coefficient, B2For correction term；
According to the corresponding relationship of the pressure of nozzle each in circuit and water flow, determined in the circuit according to following formula
The relational model of pressure and water flow：
Fpiple_cal=D × m × (A1×Ppiple)0.5
Wherein, Fpiple_calFor the theoretical water flow in the circuit, PpipleFor the pressure in the circuit, A1For each nozzle
Fitting coefficient, D is correction factor, and m is the nozzle quantity in the circuit, and n is positive integer；
Alternatively, determining the relational model of pressure and water flow in the circuit according to following formula：
Fpiple_cal=D × m × (A2×Ppiple+B2)0.5
Wherein, Fpiple_calFor the theoretical water flow in the circuit, PpipleFor the pressure in the circuit, A2For each nozzle
Fitting coefficient, B2For the correction term of each nozzle, D is correction factor, and m is the nozzle quantity in the circuit, and n is positive whole
Number.
Preferably, the determining module is specifically used for：
When determining the working condition in the circuit for normal condition, the practical water flow in the circuit is measured in the case where setting pressure
Amount, and according to the reason of each nozzle under the corresponding relationship of the pressure of nozzle each in the circuit and water flow calculating corresponding pressure
By water flow；
According to the practical water flow in the circuit and the theoretical water flow of each nozzle, and corrected according to following formula
Coefficient：
Wherein, D is correction factor, Fpiple_actualFor the practical water flow in the circuit, FnozzleIt is every in the circuit
The theoretical water flow of a nozzle, m are the nozzle quantity in the circuit.
Preferably, the setpoint frequency is 0.5HZ, correspondingly, set period of time before the current time be 30~
60S。
The dynamic judgment method and system of a kind of secondary cooling nozzle of continuous casting working condition provided by the invention, including：According to return
The corresponding relationship of the pressure and water flow of each nozzle, determines the relational model of pressure and water flow in the circuit in road；?
In continuous casting production process, the pressure and practical water flow in the circuit are measured according to setpoint frequency；According to the pressure in the circuit
And the relational model of the pressure and water flow, calculate the theoretical water flow in the circuit；According to the theoretical water flow in the circuit
Amount and the practical water flow, determine the momentary operational condition in the circuit；Determining the momentary operational condition in the circuit
In set period of time before the corresponding moment, the frequency for each momentary operational condition that the circuit occurs is counted；And it will
The highest momentary operational condition of the frequency is determined as the working condition in the circuit；According to the judgement of the working condition in the circuit
The working condition of nozzle in circuit.In this way, the embodiment of the present invention is in continuous casting production process, in real time and dynamic according to setpoint frequency
Ground determines the working condition in circuit, to determine the circuit in real time and dynamically according to the working condition in the circuit
The working condition of middle nozzle；Also, the set period of time before the correspondence moment for the momentary operational condition for determining the circuit
It is interior, the frequency for each momentary operational condition that the circuit occurs is counted；And the highest momentary operational condition of the frequency is sentenced
It is set to the working condition in the circuit, the working condition of nozzle in the circuit is determined according to the working condition in the circuit, this
Sample can preferably inhibit the influence of data fluctuations, data exception to final judgement result in continuous casting production process, to tie up
Hold the final stability for determining result.
Detailed description of the invention
Fig. 1 is shown as the heat transfer theory schematic diagram of continuous casting two cold of the invention；
Fig. 2 is shown as the pipe-line layout schematic diagram of continuous casting two cold system of the invention；
Fig. 3 is shown as the flow diagram of the dynamic judgment method of continuous casting two cold loop works state of the invention；
Fig. 4 is shown as pressure-water flow rating curve schematic diagram of (operating) water nozzle of the invention；
Fig. 5 is shown as the composed structure schematic diagram of the dynamic decision-making system of continuous casting two cold loop works state of the invention.
Specific embodiment
Fig. 2 is the pipe-line layout schematic diagram of continuous casting two cold system, referring to fig. 2, it can be seen that in the continuous casting two cold system
Unit is followed successively by from big to small：Subregion, circuit, nozzle；Wherein, each subregion according to the needs of control can be divided into again inner arc and
Outer arc, various pairs are cut, and each subregion includes at least one circuit, and pressure gauge and water flowmeter are only provided on circuit, therefore,
It can only be minimum judging unit with circuit, the working condition in the circuit is determined by the detection changed to water flow in circuit,
Therefore, it is determined that in the circuit nozzle working condition.
With reference to the accompanying drawing and specific embodiment the present invention will be further described in detail.
The embodiment of the present invention proposes a kind of dynamic judgment method of continuous casting two cold loop works state, as shown in figure 3, should
Method includes：
Step S300：According to the corresponding relationship of the pressure of nozzle each in circuit and water flow, determines and pressed in the circuit
The relational model of power and water flow.
In this step, first according to the test data of the pressure of nozzle each in circuit and flow, it is fitted by data
Mode obtains the pressure of each nozzle and the corresponding relationship of water flow, and the corresponding relationship of the pressure and water flow passes through pressure-
Water flow characterisitic function is indicated；The loine pressure of nozzle is determined according to Bernoulli equation first：
Wherein, P is the loine pressure of nozzle, and ρ is Media density, and v is flow velocity, and g is acceleration of gravity, and h is height, Slose
For drag losses.
For a nozzle, potential energy caused by height and drag losses can be ignored, obtain pressure-water flow characterisitic function
Theoretical formula：
Wherein, F is the water flow of nozzle, and ρ is Media density, and R is the exit radius of nozzle, and P is the loine pressure of nozzle.
Therefore, pass through the available nozzle exit pressure of formula (2)-water flow characterisitic function fitting formula：
Fnozzle=A1×Pnozzle 0.5 (3)
Wherein, PnozzleFor the pressure of each nozzle in the circuit, FnozzleFor the theory of each nozzle in the circuit
Water flow, A1For fitting coefficient；
For the nozzle of air water atomization, pressure-water flow characterisitic function is similar to (operating) water nozzle, it is contemplated that gas pressure
Therefore influence of the power difference to water flow for the nozzle of air water atomization, is modified formula (3) to obtain formula (4)：
Fnozzle=A2×Pnozzle 0.5+B2 (4)
Wherein, PnozzleFor the pressure of each nozzle in the circuit, FnozzleFor the theory of each nozzle in the circuit
Water flow, A2For fitting coefficient, B2For correction term.
Then, according to the corresponding relationship of the pressure of nozzle each in circuit and water flow, namely：According to formula (3) or formula (4)
The pressure of each nozzle provided-water flow characteristic function determines pressure and water flow in the circuit according to following formula
Relational model：
Wherein, Fpiple_calFor the theoretical water flow in the circuit, Fnozzle_nFor the theory of n-th of nozzle in the circuit
Water flow, D are correction factor, and m is the nozzle quantity in the circuit, and n is positive integer.
Convolution (3) and (5) obtain the relational model of pressure and water flow in the circuit：
Wherein, Fpiple_calFor the theoretical water flow in the circuit, Pnozzle_nFor the pressure of n-th of nozzle in the circuit,
A1_nFor the fitting coefficient of n-th of nozzle, D is correction factor, and m is the nozzle quantity in the circuit, and n is positive integer；
Alternatively, convolution (4) and (5) obtain the relational model of pressure and water flow in the circuit：
Wherein, Fpiple_calFor the theoretical water flow in the circuit, Pnozzle_nFor the pressure of n-th of nozzle in the circuit,
A2_nFor the fitting coefficient of n-th of nozzle, B2_nFor the correction term of n-th of nozzle, D is correction factor, and m is the spray in the circuit
Unrounded number, n are positive integer.
Since the circuit includes multiple identical nozzles, it is believed that the pressure of each nozzle is identical and is equal to described return
The pressure on road, and it is all the same for the fitting coefficient of each nozzle, therefore, formula (6) can be expressed as：
Fpiple_cal=D × m × (A1×Ppiple)0.5
Wherein, Fpiple_calFor the theoretical water flow in the circuit, PpipleFor the pressure in the circuit, A1For each nozzle
Fitting coefficient, D is correction factor, and m is the nozzle quantity in the circuit；
Formula (7) can be expressed as：
Fpiple_cal=D × m × Fnozzle=D × m × (A2×Pnozzle+B2)0.5
Wherein, Fpiple_calFor the theoretical water flow in the circuit, PpipleFor the pressure in the circuit, A2For each nozzle
Fitting coefficient, B2For the correction term of each nozzle, D is correction factor, and m is the nozzle quantity in the circuit；
Specifically, the correction factor in formula (6) or (7) obtains in the following manner：
When determining the working condition in the circuit for normal condition, the water flow in the circuit is measured in the case where setting pressure,
And the theory of each nozzle under corresponding pressure is calculated according to the corresponding relationship of the pressure of nozzle each in the circuit and water flow
Water flow；
According to the practical water flow in the circuit and the theoretical water flow of each nozzle, and corrected according to following formula
Coefficient：
Wherein, D is correction factor, Fpiple_actualFor the practical water flow of circuit measurement, FnozzleFor the circuit
In every nozzle theoretical water flow, m be the circuit in nozzle quantity.
It should be noted that：The water flow of nozzle at various pressures is depicted as one above by data processing method
Curve, the curve are known as pressure-water flow characterisitic function.
Step S301：In continuous casting production process, the pressure and practical water flow in the circuit are measured according to setpoint frequency.
It, will certainly be right after the working condition of the nozzle in circuit changes for continuous casting two cold circuit in this step
The fluid flowing in circuit has an impact, and end reaction is based on this into pressure-water flow corresponding relationship in circuit, even
It casts in production process, the pressure and practical water flow in the circuit is obtained by instrument measurement first.
In this step, the frequency of measurement can be set according to actual needs, it is preferable that be set as the frequency of measurement
0.5HZ；In this way, the measurement frequency provided is higher, then the time of measurement and judgement working condition is also relatively short every time, it can
The production technology compact suitable for continuous casting.
Step S302：According to the relational model of the pressure in the circuit and the pressure and water flow, the circuit is calculated
Theoretical water flow.
In this step, according to the pressure in the circuit and using the relationship of the obtained pressure and water flow of above-mentioned steps S300
Model (5) calculates the theoretical water flow in the circuit.
Step S303：According to the theoretical water flow in the circuit and the practical water flow, the instantaneous of the circuit is determined
Working condition.
In this step, the momentary operational condition includes：Blocked state, slight blocked state, normal condition, slight leakage
State, leak condition；
Specifically, obtaining the theoretical water flow in the circuit and the comparison of the practical water flow first, in accordance with following formula
Value：
Wherein, Fpiple_calFor the theoretical water flow in the circuit, Fpiple_actualFor the practical water flow in the circuit,
For the theoretical water flow F in the circuitpiple_calWith the practical water flow Fpiple_actualReduced value；
If the reduced valueGreater than preset first threshold, then the momentary operational condition in the circuit is determined to block shape
State；
If the reduced valueLess than or equal to preset first threshold, and it is greater than preset second threshold, then described in judgement
The momentary operational condition in circuit is slight blocked state；
If the reduced valueLess than or equal to preset second threshold, and it is greater than preset third threshold value, then described in judgement
The momentary operational condition in circuit is normal condition；
If the reduced valueLess than or equal to preset third threshold value, and it is greater than preset 4th threshold value, then described in judgement
The momentary operational condition in circuit is slight leak condition；
If the reduced valueLess than or equal to preset 4th threshold value, then determine that the momentary operational condition in the circuit is
Leak condition；
Wherein, the first threshold is greater than the second threshold, and the second threshold is greater than the third threshold value, and institute
Third threshold value is stated greater than the 4th threshold value.
In this step, according to the difference of conticaster, the selection of threshold value is slightly different, in general, δ1、δ2、δ3And δ4Value model
Enclose for：25% > δ1> 15%, 15% > δ2> 5%, -5% > δ3> -15%, -15% > δ4> -25%.
Step S304：It is right in set period of time before the correspondence moment for the momentary operational condition for determining the circuit
The frequency for each momentary operational condition that the circuit occurs is counted；And the highest momentary operational condition of the frequency is determined as institute
State the working condition in circuit.
In this step, if according to above-mentioned steps S303 by the momentary operational condition determined each time directly as the circuit
Working condition, then cannot preferably inhibit data fluctuations in continuous casting production process, data exception to determine result to final
Influence, therefore, in order to eliminate data fluctuations, data exception cause finally determine result fluctuation or exception, directly will not be every
The momentary operational condition once determined is directly determined as the working condition in the circuit, but in the instantaneous work for determining the circuit
Make in set period of time t- Δ t~t before the correspondence moment t of state, each momentary operational condition occurred to the circuit
The frequency is counted；And the highest momentary operational condition of the frequency is determined as to the working condition in the circuit, it in this way can be preferable
Ground inhibits the influence of data fluctuations, data exception to final judgement result in continuous casting production process, to maintain to determine result
Stability.
Step S305：The working condition of nozzle in the circuit is determined according to the working condition in the circuit.
In this step, the working condition in the circuit finally determined represents the working condition of nozzle in the circuit, for example,
When the working condition of determination circuit is blocked state, although not can determine that the working condition of which specific nozzle in the circuit is stifled
Plug-like state, but can be determined that there are the nozzles that working condition is blocked state in the circuit.
In this step, can in real time and dynamically the working condition in circuit is determined, thus according to the circuit
Working condition is real-time and dynamically determines the working condition of nozzle in the circuit, and decision process does not need human intervention；Cause
This, which is suitable for the overall process of continuous casting casting, and final judgement result can be realized with continuous casting the two-stage dynamic water distribution and be closed
Ring control.
In the embodiment of the present invention, although continuous casting two cold circuit quantity is more, implementation of the above method on each circuit
Step is all the same, and therefore, the embodiment of the present invention is only chosen a circuit and is illustrated.The circuit more for continuous casting two cold, can
To determine the relational model of pressure and water flow in each circuit using the above method；In continuous casting production process, pass through instrument
Measure the pressure and practical water flow in obtained each circuit；According to the pressure in each circuit and corresponding pressure and water flow
Relational model calculates the theoretical water flow in each circuit；According to the theoretical water flow in each circuit and corresponding practical water flow,
Determine the working condition of corresponding circuit；Set period of time before the correspondence moment for the momentary operational condition for determining corresponding circuit
It is interior, the frequency for each momentary operational condition that corresponding circuit occurs is counted；And the highest momentary operational condition of the frequency is sentenced
It is set to the working condition of corresponding circuit；The working condition of nozzle in corresponding circuit is determined according to the working condition of corresponding circuit.
In order to be more clearly illustrated to the embodiment of the present invention, combined with specific embodiments below to the continuous casting two cold circuit
The dynamic determination flow of working condition is described in detail.
Embodiment one
Although the circuit quantity of continuous casting two cold is more, the implementation steps on each circuit are all the same, therefore, this implementation
In example one by taking some circuit as an example, the decision process of the working condition in the circuit is described in detail.The circuit includes 36
The pressure of identical (operating) water nozzle, the mouth of each (operating) water nozzle is identical and is equal to the pressure in the circuit, and for the quasi- of each nozzle
Collaboration number is all the same, and table 1 provides pressure-water flow test data of some (operating) water nozzle：
| Water pressure (MPa) | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.8 | 0.9 | 1.0 |
| Water flow (L/min) | 2.10 | 3.10 | 3.77 | 4.23 | 4.75 | 5.11 | 5.55 | 5.94 | 6.22 | 6.47 |
Table 1
Pressure-water flow test data of the (operating) water nozzle is fitted first, pressure-water flow of obtained (operating) water nozzle
Rating curve is as shown in figure 4, pressure-water flow rating curve according to Fig.4, obtains pressure-water flow characterisitic function
Calculation formula：
Fnozzle=6.6245 × Pnozzle 0.5
Wherein, FnozzleFor the water flow of the (operating) water nozzle, PnozzleFor the pressure of the (operating) water nozzle, fitting coefficient A1=
6.6245；
In the acquired circuit on the basis of pressure of (operating) water nozzle-water flow characterisitic function, inquire in the circuit
(operating) water nozzle quantity is 36, the pressure in the circuit and the relational model of water flow is calculated according to following formula, and mark to coefficient D
Fixed to solve, result is：
Fpiple_cal=0.95 × 36 × Fnozzle
Wherein, Fpiple_calFor the theoretical water flow in the circuit, FnozzleFor the theoretical water flow of each (operating) water nozzle, amendment
Coefficient D=0.95, (operating) water nozzle quantity m=36；
It should be noted that since the circuit includes 36 identical (operating) water nozzles, it is therefore contemplated that each (operating) water nozzle
Water flow is Fnozzle。
The frequency that DATA REASONING is arranged in the present embodiment one is 0.5HZ, and collection period T is 2s, and according to formula Fpiple=
0.95×36×Fnozzle=0.95 × 36 × (6.6245 × Ppiple)0.5, the theoretical water flow in the circuit is calculated, it should by comparison
The practical water flow of theoretical water flow and measurement that circuit calculates every time, determines the momentary operational condition in the circuit；Determining
Each instantaneous work in set period of time before the correspondence moment of the momentary operational condition in the circuit, to circuit appearance
The frequency of state is counted；And the highest momentary operational condition of the frequency is determined as to the working condition in the circuit；Final root
The working condition of nozzle in the circuit is determined according to the working condition in the circuit；The moment in the circuit is obtained according to setpoint frequency
Working condition and working condition are as shown in table 2；
Table 2
From table 2 it can be seen that the moment working condition at t=12s moment is leak condition, but the moment before this moment
Working condition is all normal condition, therefore, a possibility that in order to eliminate data fluctuations, the setting time before 12s at this moment
Determine that the working condition in the t=12s moment circuit is normal condition according to frequency height in section Δ t, the t=12s moment it is latter
The moment working condition of section time is normal condition really, illustrates that the method can preferably inhibit the number in continuous casting production process
According to fluctuation, data exception to the final influence for determining result, to maintain the final stability for determining result.From t=30s to t
=46s, the moment working condition in circuit this period are substantially slight leak condition and leak condition two states, but root
According to frequency statistics as a result, being still the frequency highest of the moment working condition appearance of normal condition, therefore, t=in this section
The working condition in the moment circuit 46s remains as normal condition, until maintain the normal condition for a period of time until, the work in circuit
State is just changed into leak condition, forecast accuracy can be effectively improved using this data processing method, to reduce mistake
False alarm.
The final judgement result of description according to an embodiment of the present invention, above-mentioned circuit is nozzle included in its circuit
The judgement result of working condition.
To realize the above method, the embodiment of the invention provides a kind of dynamics of secondary cooling nozzle of continuous casting working condition to determine system
System, since the principle that the system solves the problems, such as is similar to method, the implementation process and implementation principle of system may refer to
The implementation process and implementation principle of preceding method describe, and overlaps will not be repeated.
The embodiment of the present invention proposes a kind of dynamic decision-making system of secondary cooling nozzle of continuous casting working condition, as shown in figure 5, should
System includes：Determining module 500, measurement module 501, computing module 502, the first determination module 503, the second determination module
504, third determination module 505；Wherein,
The determining module 500, for determining institute according to the pressure of nozzle each in circuit and the corresponding relationship of water flow
State the relational model of pressure and water flow in circuit；
The measurement module 501, in continuous casting production process, according to setpoint frequency measure the circuit pressure and
Practical water flow；
The computing module 502, for according to the pressure in the circuit and the relational model of the pressure and water flow, meter
Calculate the theoretical water flow in the circuit；
First determination module 503 is determined for the theoretical water flow and the practical water flow according to the circuit
The momentary operational condition in the circuit；
Second determination module 504, for the correspondence moment of the momentary operational condition for determining the circuit it
In preceding set period of time, the frequency for each momentary operational condition that the circuit occurs is counted；And it is the frequency is highest
Momentary operational condition is determined as the working condition in the circuit；
The third determination module 505, for determining the work of nozzle in the circuit according to the working condition in the circuit
Make state.
In specific implementation, the momentary operational condition includes：Blocked state, normal condition, is slightly let out slight blocked state
Leakage state, leak condition；
First determination module 503 is specifically used for：
The theoretical water flow in the circuit and the reduced value of the practical water flow are obtained according to following formula：
Wherein, Fpiple_calFor the theoretical water flow in the circuit, Fpiple_actualFor the practical water flow in the circuit,
For the theoretical water flow F in the circuitpiple_calWith the practical water flow Fpiple_actualReduced value；
If the reduced valueGreater than preset first threshold, then the momentary operational condition in the circuit is determined to block shape
State；
If the reduced valueLess than or equal to preset first threshold, and it is greater than preset second threshold, then described in judgement
The momentary operational condition in circuit is slight blocked state；
If the reduced valueLess than or equal to preset second threshold, and it is greater than preset third threshold value, then described in judgement
The momentary operational condition in circuit is normal condition；
If the reduced valueLess than or equal to preset third threshold value, and it is greater than preset 4th threshold value, then described in judgement
The momentary operational condition in circuit is slight leak condition；
If the reduced valueLess than or equal to preset 4th threshold value, then determine that the momentary operational condition in the circuit is
Leak condition；
Wherein, the first threshold is greater than the second threshold, and the second threshold is greater than the third threshold value, and institute
Third threshold value is stated greater than the 4th threshold value.
In specific implementation, the determining module 500 is specifically used for：
The corresponding relationship of the pressure and water flow of each nozzle in the circuit is determined according to following formula：
Fnozzle=A1×Pnozzle 0.5
Wherein, PnozzleFor the pressure of each nozzle in the circuit, FnozzleIt is corresponding for each nozzle in the circuit
Water flow, A1For fitting coefficient；
Alternatively, determining the corresponding relationship of the pressure and water flow of each nozzle in the circuit according to following formula：
Fnozzle=A2×Pnozzle 0.5+B2
Wherein, PnozzleFor the pressure of each nozzle in the circuit, FnozzleIt is corresponding for each nozzle in the circuit
Water flow, A2For fitting coefficient, B2For correction term；
According to the corresponding relationship of the pressure of nozzle each in circuit and water flow, determined in the circuit according to following formula
The relational model of pressure and water flow：
Fpiple_cal=D × m × (A1×Ppiple)0.5
Wherein, Fpiple_calFor the theoretical water flow in the circuit, PpipleFor the pressure in the circuit, A1For each nozzle
Fitting coefficient, D is correction factor, and m is the nozzle quantity in the circuit, and n is positive integer；
Alternatively, determining the relational model of pressure and water flow in the circuit according to following formula：
Fpiple_cal=D × m × (A2×Ppiple+B2)0.5
Wherein, Fpiple_calFor the theoretical water flow in the circuit, PpipleFor the pressure in the circuit, A2For each nozzle
Fitting coefficient, B2For the correction term of each nozzle, D is correction factor, and m is the nozzle quantity in the circuit, and n is positive whole
Number.
In specific implementation, the determining module 500 is specifically used for：
When determining the working condition in the circuit for normal condition, the practical water flow in the circuit is measured in the case where setting pressure
Amount, and according to the reason of each nozzle under the corresponding relationship of the pressure of nozzle each in the circuit and water flow calculating corresponding pressure
By water flow；
According to the practical water flow in the circuit and the theoretical water flow of each nozzle, and corrected according to following formula
Coefficient：
Wherein, D is correction factor, Fpiple_actualFor the practical water flow in the circuit, FnozzleIt is every in the circuit
The theoretical water flow of a nozzle, m are the nozzle quantity in the circuit.
In specific implementation, the setpoint frequency is 0.5HZ, correspondingly, the set period of time before the current time is
30~60S.
The division mode of above functions module is only a kind of preferred implementation that the embodiment of the present invention provides, functional module
Division mode be not construed as limiting the invention.For convenience of description, each section of system above is divided into function
Various modules or unit describe respectively.Above-mentioned functional module can be software function module, be also possible to hardware device.The system
It can be distributed system or integrated system, if distributed system, then above-mentioned functional module can be respectively by hardware device reality
It is existing, pass through network interaction between each hardware device；If integrated system, then above-mentioned each functional module can be collected by software realization
In Cheng Yi hardware device.
In practical applications, when the determining module 500, measurement module 501, computing module 502, the first determination module
503, when the second determination module 504, third determination module are integrated in a hardware device, the determining module 500, measurement mould
Block 501, computing module 502, the first determination module 503, the second determination module 504, third determination module can be by being located at the hardware
Central processing unit (CPU), microprocessor (MPU), digital signal processor (DSP) or field programmable gate array in equipment
(FPGA) it realizes.
In conclusion the dynamic judgment method and system of continuous casting two cold loop works state provided by the invention, relative to
The prior art has the advantages that：
(1) in continuous casting production process, according to setpoint frequency in real time and dynamically the working condition in circuit is determined,
So as to determine the working condition of nozzle in the circuit in real time and dynamically according to the working condition in the circuit；
(2) in the set period of time before the correspondence moment of the momentary operational condition for determining the circuit, to institute
The frequency for stating each momentary operational condition of circuit appearance is counted；And the highest momentary operational condition of the frequency is determined as described
The working condition in circuit；To determine the working condition of nozzle in the circuit, such energy according to the working condition in the circuit
Enough data fluctuations preferably inhibited in continuous casting production process, data exception are to the final influence for determining result, to maintain most
The stability of result is determined eventually.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (10)
1. a kind of dynamic judgment method of secondary cooling nozzle of continuous casting working condition, which is characterized in that according to nozzle each in circuit
The corresponding relationship of pressure and water flow determines the relational model of pressure and water flow in the circuit；The method also includes：
In continuous casting production process, the pressure and practical water flow in the circuit are measured according to setpoint frequency；
According to the relational model of the pressure in the circuit and the pressure and water flow, the theoretical water flow in the circuit is calculated；
According to the theoretical water flow in the circuit and the practical water flow, the momentary operational condition in the circuit is determined；
In set period of time before the correspondence moment for the momentary operational condition for determining the circuit, occur to the circuit
The frequency of each momentary operational condition is counted；And the highest momentary operational condition of the frequency is determined as to the work shape in the circuit
State；
The working condition of nozzle in the circuit is determined according to the working condition in the circuit；
The theoretical water flow in the circuit and the reduced value of the practical water flow are obtained according to following formula：
Wherein, Fpiple_calFor the theoretical water flow in the circuit, Fpiple_actualFor the practical water flow in the circuit,For institute
State the theoretical water flow F in circuitpiple_calWith the practical water flow Fpiple_actualReduced value；
Reduced value and preset threshold are compared, determine the momentary operational condition in the circuit.
2. the method according to claim 1, wherein the momentary operational condition includes：Blocked state slightly blocks up
Plug-like state, normal condition, slight leak condition, leak condition；
The theoretical water flow and the practical water flow according to the circuit, determines the momentary operational condition in the circuit,
Including：
If the reduced valueGreater than preset first threshold, then determine the momentary operational condition in the circuit for blocked state；
If the reduced valueLess than or equal to preset first threshold, and it is greater than preset second threshold, then determines the circuit
Momentary operational condition be slight blocked state；
If the reduced valueLess than or equal to preset second threshold, and it is greater than preset third threshold value, then determines the circuit
Momentary operational condition be normal condition；
If the reduced valueLess than or equal to preset third threshold value, and it is greater than preset 4th threshold value, then determines the circuit
Momentary operational condition be slight leak condition；
If the reduced valueLess than or equal to preset 4th threshold value, then determine the momentary operational condition in the circuit for leakage
State；
Wherein, the first threshold is greater than the second threshold, and the second threshold is greater than the third threshold value, and described the
Three threshold values are greater than the 4th threshold value.
3. the method according to claim 1, wherein the pressure and water flow according to nozzle each in circuit
Corresponding relationship, determine the relational model of pressure and water flow in the circuit, including：
The corresponding relationship of the pressure and water flow of each nozzle in the circuit is determined according to following formula：
Fnozzle=A1×Pnozzle 0.5
Wherein, PnozzleFor the pressure of each nozzle in the circuit, FnozzleFor the theoretical water flow of each nozzle in the circuit
Amount, A1For fitting coefficient；
Alternatively, determining the corresponding relationship of the pressure and water flow of each nozzle in the circuit according to following formula：
Fnozzle=A2×Pnozzle 0.5+B2
Wherein, PnozzleFor the pressure of each nozzle in the circuit, FnozzleFor the theoretical water flow of each nozzle in the circuit
Amount, A2For fitting coefficient, B2For correction term；
According to the corresponding relationship of the pressure of nozzle each in circuit and water flow, pressure in the circuit is determined according to following formula
With the relational model of water flow：
Fpiple_cal=D × m × (A1×Ppiple)0.5
Wherein, Fpiple_calFor the theoretical water flow in the circuit, PpipleFor the pressure in the circuit, A1For the quasi- of each nozzle
Collaboration number, D are correction factor, and m is the nozzle quantity in the circuit；
Alternatively, determining the relational model of pressure and water flow in the circuit according to following formula：
Fpiple_cal=D × m × (A2×Ppiple+B2)0.5
Wherein, Fpiple_calFor the theoretical water flow in the circuit, PpipleFor the pressure in the circuit, A2For the quasi- of each nozzle
Collaboration number, B2For the correction term of each nozzle, D is correction factor, and m is the nozzle quantity in the circuit.
4. according to the method described in claim 3, it is characterized in that, the correction factor obtains in the following manner：
When determining the working condition in the circuit for normal condition, the practical water flow in the circuit is measured in the case where setting pressure,
And the theory of each nozzle under corresponding pressure is calculated according to the corresponding relationship of the pressure of nozzle each in the circuit and water flow
Water flow；
Amendment system is obtained according to the practical water flow in the circuit and the theoretical water flow of each nozzle, and according to following formula
Number：
Wherein, D is correction factor, Fpiple_actualFor the practical water flow in the circuit, FnozzleFor each spray in the circuit
The theoretical water flow of mouth, m are the nozzle quantity in the circuit.
5. method according to any one of claims 1 to 4, which is characterized in that the setpoint frequency is 0.5HZ, correspondingly,
Set period of time before current time is 30~60S.
6. a kind of dynamic decision-making system of secondary cooling nozzle of continuous casting working condition, which is characterized in that the system comprises：Determine mould
Block, measurement module, computing module, the first determination module, the second determination module, third determination module；Wherein,
The determining module, for determining the circuit according to the pressure of nozzle each in circuit and the corresponding relationship of water flow
The relational model of middle pressure and water flow；
The measurement module, in continuous casting production process, according to setpoint frequency measure the circuit pressure and practical water
Flow；
The computing module, for according to the pressure in the circuit and the relational model of the pressure and water flow, described in calculating
The theoretical water flow in circuit；
First determination module determines described return for the theoretical water flow and the practical water flow according to the circuit
The momentary operational condition on road；
Second determination module, for the setting before the correspondence moment of the momentary operational condition for determining the circuit
In period, the frequency for each momentary operational condition that the circuit occurs is counted；And by the highest instantaneous work of the frequency
State is determined as the working condition in the circuit；
The third determination module, for determining the working condition of nozzle in the circuit according to the working condition in the circuit；
First determination module is specifically used for：
The theoretical water flow in the circuit and the reduced value of the practical water flow are obtained according to following formula：
Wherein, Fpiple_calFor the theoretical water flow in the circuit, Fpiple_actualFor the practical water flow in the circuit,For institute
State the theoretical water flow F in circuitpiple_calWith the practical water flow Fpiple_actualReduced value；
Reduced value and preset threshold are compared, determine the momentary operational condition in the circuit.
7. system according to claim 6, which is characterized in that the momentary operational condition includes：Blocked state slightly blocks up
Plug-like state, normal condition, slight leak condition, leak condition；
If the reduced valueGreater than preset first threshold, then determine the momentary operational condition in the circuit for blocked state；
If the reduced valueLess than or equal to preset first threshold, and it is greater than preset second threshold, then determines the circuit
Momentary operational condition be slight blocked state；
If the reduced valueLess than or equal to preset second threshold, and it is greater than preset third threshold value, then determines the circuit
Momentary operational condition be normal condition；
If the reduced valueLess than or equal to preset third threshold value, and it is greater than preset 4th threshold value, then determines the circuit
Momentary operational condition be slight leak condition；
If the reduced valueLess than or equal to preset 4th threshold value, then determine the momentary operational condition in the circuit for leakage
State；
Wherein, the first threshold is greater than the second threshold, and the second threshold is greater than the third threshold value, and described the
Three threshold values are greater than the 4th threshold value.
8. system according to claim 6, which is characterized in that the determining module is specifically used for：
The corresponding relationship of the pressure and water flow of each nozzle in the circuit is determined according to following formula：
Fnozzle=A1×Pnozzle 0.5
Wherein, PnozzleFor the pressure of each nozzle in the circuit, FnozzleFor the theoretical water flow of each nozzle in the circuit
Amount, A1For fitting coefficient；
Alternatively, determining the corresponding relationship of the pressure and water flow of each nozzle in the circuit according to following formula：
Fnozzle=A2×Pnozzle 0.5+B2
Wherein, PnozzleFor the pressure of each nozzle in the circuit, FnozzleFor the theoretical water flow of each nozzle in the circuit
Amount, A2For fitting coefficient, B2For correction term；
According to the corresponding relationship of the pressure of nozzle each in circuit and water flow, pressure in the circuit is determined according to following formula
With the relational model of water flow：
Fpiple_cal=D × m × (A1×Ppiple)0.5
Wherein, Fpiple_calFor the theoretical water flow in the circuit, PpipleFor the pressure in the circuit, A1For the quasi- of each nozzle
Collaboration number, D are correction factor, and m is the nozzle quantity in the circuit, and n is positive integer；
Alternatively, determining the relational model of pressure and water flow in the circuit according to following formula：
Fpiple_cal=D × m × (A2×Ppiple+B2)0.5
Wherein, Fpiple_calFor the theoretical water flow in the circuit, PpipleFor the pressure in the circuit, A2For the quasi- of each nozzle
Collaboration number, B2For the correction term of each nozzle, D is correction factor, and m is the nozzle quantity in the circuit.
9. system according to claim 8, which is characterized in that the determining module is specifically used for：
When determining the working condition in the circuit for normal condition, the practical water flow in the circuit is measured in the case where setting pressure,
And the theory of each nozzle under corresponding pressure is calculated according to the corresponding relationship of the pressure of nozzle each in the circuit and water flow
Water flow；
Amendment system is obtained according to the practical water flow in the circuit and the theoretical water flow of each nozzle, and according to following formula
Number：
Wherein, D is correction factor, Fpiple_actualFor the practical water flow in the circuit, FnozzleFor each spray in the circuit
The theoretical water flow of mouth, m are the nozzle quantity in the circuit.
10. according to the described in any item systems of claim 6 to 9, which is characterized in that the setpoint frequency is 0.5HZ, accordingly
, the set period of time before current time is 30~60S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610564446.6A CN106180622B (en) | 2016-07-18 | 2016-07-18 | A kind of dynamic judgment method and system of secondary cooling nozzle of continuous casting working condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610564446.6A CN106180622B (en) | 2016-07-18 | 2016-07-18 | A kind of dynamic judgment method and system of secondary cooling nozzle of continuous casting working condition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106180622A CN106180622A (en) | 2016-12-07 |
| CN106180622B true CN106180622B (en) | 2018-11-16 |
Family
ID=57492972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610564446.6A Active CN106180622B (en) | 2016-07-18 | 2016-07-18 | A kind of dynamic judgment method and system of secondary cooling nozzle of continuous casting working condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106180622B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107321951B (en) * | 2017-08-17 | 2019-08-13 | 中冶赛迪工程技术股份有限公司 | A method of nozzle runoff investigation lower limit value in control caster two cold circuit |
| CN112024837B (en) * | 2019-06-04 | 2021-11-16 | 上海梅山钢铁股份有限公司 | Real-time diagnosis method for continuous casting slab nozzle blockage |
| CN110625080B (en) * | 2019-09-23 | 2022-04-26 | 中冶南方连铸技术工程有限责任公司 | Intelligent detection and control method for online working state of continuous casting secondary cooling system |
| CN111451469B (en) * | 2020-03-09 | 2021-08-06 | 柳州钢铁股份有限公司 | Method for judging state of continuous casting secondary cooling water nozzle |
| CN111651729A (en) * | 2020-06-02 | 2020-09-11 | 山东莱钢永锋钢铁有限公司 | Method for predicting blockage of secondary cooling water nozzle in continuous casting |
| CN112958751A (en) * | 2021-01-27 | 2021-06-15 | 唐山不锈钢有限责任公司 | Online prediction and management method for continuous casting secondary cooling state |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005279691A (en) * | 2004-03-29 | 2005-10-13 | Jfe Steel Kk | Secondary cooling method for continuously cast slab |
| JP2006175465A (en) * | 2004-12-21 | 2006-07-06 | Kobe Steel Ltd | Continuous casting method |
| JP2007185713A (en) * | 2007-02-28 | 2007-07-26 | Jfe Steel Kk | Method and machine for continuous casting of steel |
| CN103884473A (en) * | 2014-02-18 | 2014-06-25 | 北京国电富通科技发展有限责任公司 | Water leakage determination method for water cooling system |
| CN104568410A (en) * | 2015-01-05 | 2015-04-29 | 河北钢铁股份有限公司邯郸分公司 | Continuous-casting secondary cooling nozzle working state online judgment method |
-
2016
- 2016-07-18 CN CN201610564446.6A patent/CN106180622B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005279691A (en) * | 2004-03-29 | 2005-10-13 | Jfe Steel Kk | Secondary cooling method for continuously cast slab |
| JP2006175465A (en) * | 2004-12-21 | 2006-07-06 | Kobe Steel Ltd | Continuous casting method |
| JP2007185713A (en) * | 2007-02-28 | 2007-07-26 | Jfe Steel Kk | Method and machine for continuous casting of steel |
| CN103884473A (en) * | 2014-02-18 | 2014-06-25 | 北京国电富通科技发展有限责任公司 | Water leakage determination method for water cooling system |
| CN104568410A (en) * | 2015-01-05 | 2015-04-29 | 河北钢铁股份有限公司邯郸分公司 | Continuous-casting secondary cooling nozzle working state online judgment method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106180622A (en) | 2016-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106180622B (en) | A kind of dynamic judgment method and system of secondary cooling nozzle of continuous casting working condition | |
| CN103143570B (en) | Roller cooling system and cooling control method thereof | |
| CN103014329B (en) | Control method of annular cooling air blower | |
| WO2013091487A1 (en) | Method for monitoring inside-boiler dynamic wall temperature of power plant boiler high-temperature piping system | |
| CN105606619A (en) | Detection and grinding optimization method for casting blank grinding machine | |
| CN111617921A (en) | Dynamic wind balance control method for dry-type spray room | |
| CN105070335B (en) | Measure the device of device wall dust deposit characteristic in HTHP dust-contained airflow | |
| CN107122516A (en) | A kind of fire extinguishing system loses determination method from segment pipe along stroke pressure | |
| CN111451469B (en) | Method for judging state of continuous casting secondary cooling water nozzle | |
| CN103868748A (en) | Water flow characteristic detection platform and method for atomizing nozzle | |
| CN110146403B (en) | High-temperature high-pressure steam humidity measuring device | |
| CN206169178U (en) | Fired mold is heat sink for precision casting | |
| CN110108595B (en) | Humidity monitoring device adopting gas-steam mixing method | |
| CN106001479B (en) | The dynamic water quantity control method and system of a kind of conticaster cooling zone | |
| CN116467823A (en) | CFD numerical simulation-based long-pipeline uniform air supply design method | |
| CN206643135U (en) | DEVICE FOR BAR AND WIRE HOT ROLLING water cooling plant control system | |
| CN106355019A (en) | Method for estimating energy efficiency of industrial circulating water system | |
| CN210587070U (en) | Intelligent device for online real-time correction of trapezoidal defects of slab section | |
| CN115219106A (en) | Compressed air pipe network leakage dynamic measurement method based on cloud computing | |
| CN204365499U (en) | Jet rose | |
| CN208831960U (en) | It is a kind of for heat up with the pipeline auxiliary device of noise reduction | |
| CN218121352U (en) | High-precision detection device for continuous casting secondary cooling nozzle | |
| CN102011127A (en) | Unit with functions of continuous hot galvanizing and continuous annealing | |
| TWI699503B (en) | Film condenser liquid-gas ratio monitoring system and monitoring method | |
| CN206768170U (en) | A kind of cooler for metal material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |