CN104209354A - Energy-saving control method for water injection pump of steel-rolling scale removal system - Google Patents
Energy-saving control method for water injection pump of steel-rolling scale removal system Download PDFInfo
- Publication number
- CN104209354A CN104209354A CN201410340811.6A CN201410340811A CN104209354A CN 104209354 A CN104209354 A CN 104209354A CN 201410340811 A CN201410340811 A CN 201410340811A CN 104209354 A CN104209354 A CN 104209354A
- Authority
- CN
- China
- Prior art keywords
- frequency
- steel material
- scaling
- spray
- steel
- 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.)
- Granted
Links
Abstract
The invention relates to an energy-saving control method for a water injection pump of a steel-rolling scale removal system. According to the method, a frequency converter supplies power to the water injection pump, and a PLC (Programmable Logic Control) device is additionally arranged to adjust the output frequency of the frequency converter. In the using process, the PLC device reads related data and related signals acquired from a control center of an original steel-rolling scale removal system to obtain an operation time sequence of water injection scale removal after a scale injection valve is opened in advance; the PLC device adjusts the operation frequency of the frequency converter according to the operation time sequence of the water injection scale removal, so that when the scale injection valve is opened, the PLC device adjusts the output frequency of the frequency converter as the scale removal frequency; when the scale injection valve is closed, the PLC device adjusts the output frequency of the frequency converter to be lower than the scale removal frequency at a scale removal interval. The method has the advantages that the power consumption of the steel-rolling scale removal system is reduced, and a great number of water resources are further saved.
Description
Technical field
The present invention relates to a kind of water jet pump energy-saving control method of steel rolling descaling system, belong to technical field of steel rolling.
Background technology
After steel billet is come out of the stove from heating furnace, the iron scale of its surface coverage cools rapidly, and the iron scale generated in stove presents pattern cracking.High-pressure water descaling is a key technology in modern hot-rolled steel technique, general employing high-pressure spray incision principle, water under high pressure is ejected by nozzle, powerful scouring force when utilizing water under high pressure to spray and cooling Power hit billet surface, under the injection of water under high pressure, iron scale surface Partial Rapid-cold, produces very large contraction, thus iron scale crackle is expanded, and there is part warpage.Through the impact of High-Pressure Water, the dynamic pressure fluidify of crackle mesohigh water static pressure and squeeze into bottom iron scale, make iron scale be broken into fractionlet and hightail with matrix surface, water under high pressure washes away iron scale by direction initialization simultaneously, thus the stove that removal steel billet produces in heating process gives birth to the regenerating oxidation iron sheet produced in iron scale and the operation of rolling, to guarantee the surface quality of steel.
Existing steel rolling descaling system adopts constant speed descaling sprays pump usually, because the pressure of the water under high pressure of de-scaling needs is very large, so the constant speed descaling sprays pump energy consumption of routine is large.But general spray phosphorus valve closing time, up to more than 80% of total operation hours, has a large amount of electric energy like this and is wasted.Therefore in order to avoid the waste of electric energy, reach the object of economize on electricity, need transform this dephosphorization water jet pump system.
General transformation is all use frequency converter to carry out speed governing to descaling sprays pump, but the change of the work schedule of water jet pump de-scaling is very fast and complicated and changeable, and the reaction speed of big-power transducer is comparatively slow, such as, be converted to from 0Hz the time that 50Hz approximately needs 90 seconds.Therefore want to obtain maximum energy-saving effect, merely using frequency converter to carry out descaling sprays pump, speed governing can not realize, also can not being realized the control mode that descaling sprays pump carries out speed governing by frequency converter of the feedback signal that PLC is conveniently real-time.
Summary of the invention
The present invention wants technical solution problem to be: the shortcoming overcoming above-mentioned technology, provides a kind of method that can reduce the control descaling sprays pump of steel rolling descaling system power consumption and water consumption.
In order to solve the problems of the technologies described above, the technical scheme that the present invention proposes is: a kind of water jet pump energy-saving control method of steel rolling descaling system, comprises the following steps:
1) be the water jet pump outlet line of powering arranges frequency converter and for regulating the PLC control device of frequency converter output frequency in steel rolling descaling system;
2) described PLC control device obtains raw information from the control centre of steel rolling descaling system, described raw information comprises steel material and comes out of the stove the time, the length of roller-way, the transmission speed of steel material on roller-way, the translational speed of steel material under milling train, the length of steel material before milling train, steel material is the thickness after milling train through the thickness before milling train and steel material, described PLC control device calculates the transmission period and the pressure rolling time period of steel material under milling train that transmit on roller-way before spray squama valve is opened according to described raw information, described transmission period and pressure rolling time period come out of the stove the time for starting point with steel material, be alternately arranged in chronological order,
The distance that described transmission period=steel material transmits on the roller-way/transmission speed of steel material on roller-way;
Described pressure rolling time period=length of steel material after the milling train/translational speed of steel material under milling train, wherein, the length of steel material after milling train=(steel material through the length before milling train × steel material through the thickness before milling train)/(steel material is through the thickness before the milling train-thickness of steel material after milling train);
3) according to step 2) the described transmission period that calculates and pressure rolling time period determine to spray the time series that squama valve opens and closes in advance,
Described PLC control device controls described spray squama valve according to this time series and opens at described transmission period and cut out in the described pressure rolling time period respectively;
Described PLC control device control frequency converter is de-scaling frequency to when the valve unlatching of spray squama the output frequency of the power supply of described water jet pump, and is less than de-scaling frequency when spraying the de-scaling gap of squama valve closedown to the output frequency of the power supply of described water jet pump; The output frequency of frequency converter when described de-scaling frequency is the hydraulic pressure making the discharge pressure of water jet pump reach needed for dephosphorization;
Circulation performs step 2) and step 3), namely complete the Energy Saving Control to water jet pump.
The present invention is for the hardware circuit of former steel rolling descaling system and software systems, and do not do any change, therefore the de-scaling sequential of de-scaling sequential of the present invention and original steel rolling descaling system is also on all four.The present invention is creatively that water jet pump is powered by setting up frequency converter, and adjusts the discharge pressure of water jet pump according to the output frequency of de-scaling SECO frequency converter by PLC control device.PLC control device is when steel material is come out of the stove, just the de-scaling gap can predicted the de-scaling time when water injection valve of steel material in steel rolling descaling system is opened and spray when squama valve cuts out, like this, PLC control device just can regulate frequency converter in advance, the slow-footed feature of big-power transducer frequency conversion can be adapted to, thus realize shifting to an earlier date frequency conversion, when spray squama valve is opened, the output frequency of frequency converter is de-scaling frequency, and spray squama valve close time frequency converter output frequency be less than de-scaling frequency, therefore the present invention can save a large amount of electricity, correspondingly significantly can reduce the cost of de-scaling, according to theory calculate, the field condition that empirical data in the past and applicant implement, power saving rate is greatly about about 25%.Meanwhile, due to water jet pump when spraying squama valve and closing lower than de-scaling frequency, run, therefore decrease the consumption of water resource, reduce further production cost.
Preferably, de-scaling gap when water injection valve cuts out in step 3), the output frequency that described PLC control device controls frequency converter first declines from described de-scaling frequency linearity, more linearly rises to described de-scaling frequency.
Preferably, described steel rolling descaling system comprises two water jet pumps and three groups of spray phosphorus valves, and the outlet line that now water jet pump is powered is arranged two frequency converters, wherein every platform frequency converter drives a water jet pump respectively; When de-scaling opened by two groups or three groups of spray squama valves simultaneously, then the output frequency that described PLC control device controls two frequency converters is de-scaling frequency; When only having one group to spray squama valve unlatching de-scaling, then described PLC control device controls the output frequency of a frequency converter is de-scaling frequency, and the output frequency of another frequency converter is less than de-scaling frequency; When three groups of spray squama valves all close do not spray water time, then the output frequency that described PLC control device controls two frequency converters is all less than de-scaling frequency.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 is the change of frequency time diagram of de-scaling sequential in the embodiment of the present invention one and frequency converter.
Fig. 2 is the change of frequency time diagram of de-scaling sequential in the embodiment of the present invention two and frequency converter.
Detailed description of the invention
Embodiment one
The steel rolling descaling system of the present embodiment comprises water jet pump and a spray squama valve of 380V, a 160KW.The energy-saving control method of the water jet pump of the steel rolling descaling system of the present embodiment comprises the following steps:
1) outlet line of powering for water jet pump in original steel rolling descaling system arranges a frequency converter, the nowforeuer frequency converter that this frequency converter is rated voltage is 380V, rated power is 200KW, increase PLC control device, described PLC control device is for regulating the output frequency of described frequency converter simultaneously.
2) described PLC control device obtains raw information from the control centre of steel rolling descaling system, described raw information comprises steel material and comes out of the stove the time, the length of roller-way, the transmission speed of steel material on roller-way, the translational speed of steel material under milling train, the length of steel material before milling train, steel material is the thickness after milling train through the thickness before milling train and steel material, described PLC control device calculates the transmission period and the pressure rolling time period of steel material under milling train that transmit on roller-way before spray squama valve is opened according to described raw information, described transmission period and pressure rolling time period come out of the stove the time for starting point with steel material, be alternately arranged in chronological order,
The distance that described transmission period=steel material transmits on the roller-way/transmission speed of steel material on roller-way;
Described pressure rolling time period=length of steel material after the milling train/translational speed of steel material under milling train, wherein, the length of steel material after milling train=(steel material through the length before milling train × steel material through the thickness before milling train)/(steel material is through the thickness before the milling train-thickness of steel material after milling train).
Select in the present embodiment and start and stop water jet pump and to arrange dephosphorization frequency be all manually operated, wherein dephosphorization hydraulic pressure is set to 180 kilograms of 60bar, and dephosphorization frequency is 50Hz.
Steel material in the present embodiment is tabular, and roller-way length is 49.5 meters, and the initial length of steel plate is 12 meters, and thickness is 0.2 meter.The steel rolling descaling system steel plate of the present embodiment needs pressure rolling once, and after pressure rolling, the thickness of steel plate is 0.1 meter, and the translational speed of steel plate on roller-way is all 1.5 meter per seconds, and the translational speed under milling train is all 2 meter per seconds.
By calculating, as shown in Figure 1, transmission period in the present embodiment=49.5/1.5=33 second, steel plate length after pressure rolling is=12 × 0.2/(0.2-0.1)=24 meters, spray squama time period=24/2=12 second, namely spray squama valve in the present embodiment operationally, come out of the stove the time for starting point with steel material, 33 seconds intervals of spraying water 12 seconds and do not spray water are run.
3) according to step 2) the described transmission period that calculates and pressure rolling time period determine to spray the time series that squama valve opens and closes in advance, and described PLC control device controls described spray squama valve according to this time series and opens at described transmission period and cut out in the described pressure rolling time period respectively;
Described PLC control device control frequency converter is de-scaling frequency to when the valve unlatching of spray squama the output frequency of the power supply of described water jet pump, and is less than de-scaling frequency when spraying the de-scaling gap of squama valve closedown to the output frequency of the power supply of described water jet pump; The output frequency of frequency converter when described de-scaling frequency is the hydraulic pressure making the discharge pressure of water jet pump reach needed for dephosphorization;
In the present embodiment, PLC control device regulates the output frequency of frequency converter in time according to dephosphorization sequential and maximization power conservation requirement: when spraying phosphorus valve and will spraying water, the output frequency of frequency converter is regulated to reach dephosphorization frequency in time, when spraying phosphorus valve and not spraying water (de-scaling gap), decide to turn down the output frequency of frequency converter to what degree according to the length of not water spraying time.
As mentioned above, spray phosphorus valve interval in the present embodiment and spray water 12 seconds and do not spray water 33 seconds, if regulated without PLC control device, then the running frequency of frequency converter remains that 50Hz is constant.And under the adjustment of PLC control device, frequency converter can run in dephosphorization gap under lower than 50Hz state, thus save electric energy.In the non-dephosphorization period be in operation, namely de-scaling gap when water injection valve cuts out, described PLC control device regulates the output frequency of frequency converter first to decline from described de-scaling frequency linearity, linearly rise to described de-scaling frequency again, namely first linearly drop to 30Hz from 50Hz, more linearly rise to 50Hz from 30Hz.
Circulation performs step 2) and step 3), namely complete the Energy Saving Control to water jet pump.
Due to this PLC control device variation turned down frequency converter frequency and produce energy-conservation, power saving rate is greatly about about 25%.In the present embodiment, the power of water jet pump is 160KW, and annual work 300 days, works 20 hours every day, and electricity price for industrial uses calculates by 0.60 yuan/degree, then run the electricity charge of saving for a year to be: 160 × 300 × 20 × 25% × 0.60=14.4 ten thousand yuan.
Embodiment two
The execution step of the present embodiment is substantially identical with embodiment one, and difference is:
Steel rolling descaling system in the present embodiment comprises two 10KV, the water jet pump of 3200KW and three groups of spray squama valves (three spray squama points), increasing the HARVEST frequency converter that two rated voltages are 10KV, rated power is 3500KW is that water jet pump is powered, in the present embodiment, frequency converter frequency pace of change is 1Hz/ second, and every platform frequency converter drives a water jet pump respectively; When de-scaling opened by needs two groups or three groups of spray squama valves simultaneously, then described PLC control device regulates the output frequency of two frequency converters to be de-scaling frequency; When only having one group to spray squama valve unlatching de-scaling, then described PLC control device regulates the output frequency of a frequency converter to be de-scaling frequency, and the output frequency of another frequency converter is less than de-scaling frequency.In the present embodiment, de-scaling frequency is 50Hz.
Steel material in the present embodiment is tabular, and the initial length of steel plate is 9 meters, and thickness is 0.2 meter.The steel rolling descaling system steel plate of the present embodiment needs pressure rolling five times, rolls, three roughing and finish rolling after being respectively stove, and three roughing all use same roughing mill, and second time and third time roughing are carry out pressure rolling again after steel plate rollback.After five pressure rollings, the thickness of steel plate is 0.009 meter, and roughing exit thickness is 0.038 meter; Roll after stove with in three roughing, every time rolls thin thickness is all 0.0405 meter; The ironed thickness of finishing pass is 0.029 meter;
The translational speed of steel plate on roller-way is all 1.5 meter per seconds, translational speed under milling train is all 2 meter per seconds, after #1 heating furnace discharging opening thermal detector to stove, the roller-way length of the spray squama point of milling train is 13 meters, after stove, the roller-way length of milling train spray squama point and roughing mill spray squama point is 65 meters, and the roller-way length of roughing mill spray squama point and finishing mill spray squama point is 63.5 meters.
As shown in Figure 2, the sequence number of the digital 1-3 representative spray squama point in figure, 1 is milling train spray squama point after stove, and 2 is roughing mill spray squama point, and 3 is finishing mill spray squama point
.
The computational process of spraying squama sequential in the present embodiment is as follows:
After the rear end of the first block plate moves to stove from heating furnace thermal detector, the time (i.e. transmission period) of milling train spray squama point is: 13-9/1.5 ≈ 8.67(second);
After stove under milling train, after pressure rolling, the length of steel plate becomes 9 × 0.2/(0.2-0.0405) ≈ 11.285(rice), the required time (i.e. pressure rolling time period) is 11.285/2=5.643(second);
The time (i.e. transmission period) that the rear end of steel plate moves to needed for roughing mill spray squama point from milling train spray squama point after stove is: (65-11.285)/1.5 ≈ 35.81(second);
Under roughing mill, through first time pressure rolling, the length of steel plate becomes 9 × 0.2/(0.2-0.0405 × 2) ≈ 15.126(rice), the required time (i.e. pressure rolling time period) is 15.126/2=7.563(second); The time (i.e. transmission period) of first time needed for rollback is 7.563 seconds;
After second time pressure rolling, the length of steel plate becomes 9 × 0.2/(0.2-0.0405 × 3) ≈ 22.93(rice), the required time (i.e. pressure rolling time period) is 22.93/2=11.465(second); The time (i.e. transmission period) of second time needed for rollback is 11.465 seconds;
After third time pressure rolling, the length of steel plate becomes 9 × 0.2/(0.2-0.0405 × 4) ≈ 47.368(rice), the required time (i.e. pressure rolling time period) is 47.368/2=23.684(second);
The time that the front end of steel plate moves to needed for finishing mill spray squama point from roughing mill spray squama point is 23.684+(63.5-47.368)/1.5 ≈ 34.438(seconds); Under finishing mill, after pressure rolling, the length of steel plate becomes 9 × 0.2/(0.2-0.0405 × 4-0.029) ≈ 200(rice), the required time (i.e. pressure rolling time period) is 200/2=100(second).
The spray squama sequential needed for the present embodiment just can be drawn according to above transmission period and the sequential of pressure rolling time period, within the first half time of transmission period, the output frequency of frequency converter turns down frequency to a certain frequency from 50Hz with the speed of 1Hz/ second, within the later half time, then adjust back to 50Hz from this frequency with the speed of 1Hz/ second; In the pressure rolling time period, the output frequency of frequency converter is stabilized in 50Hz.
When the first block plate completes third time de-scaling at roughing mill, second block plate starts to come out of the stove (as come out of the stove too early, the movement near roughing mill of two block plates can be gone wrong, the original control centre of steel rolling descaling system correctly can calculate accurate reasonably steel plate and come out of the stove the time), later spray squama sequential is with the spray squama sequential of the first block plate, the spray squama sequential of steel plate below is also the same, and just initial time is passed backward.
In three groups of spray squama valves of the present embodiment, as only having one group to spray squama valve water spray, a water jet pump is operated in 50Hz and can meets de-scaling hydraulic demand, but sprays water if any two groups or three groups of spray squama valves simultaneously, then must two pumps be had to be operated in 50Hz simultaneously, the requirement of de-scaling hydraulic pressure could be met.
When only having one group to spray squama valve water spray, regulate the output frequency of #1 frequency converter to be that de-scaling frequency (i.e. 50Hz) makes de-scaling hydraulic pressure meet the demands according to the requirement that spray squama sequential is energy-conservation with maximization, turn down the output frequency of another frequency converter to a suitable numerical value simultaneously.When having two groups or three groups of spray squama valves are sprayed water simultaneously, regulate the output frequency of two frequency converters (i.e. #1 frequency converter and #2 frequency converter) to be that de-scaling frequency (i.e. 50Hz) is to meet the requirement of de-scaling hydraulic pressure according to spray squama sequential and the energy-conservation requirement of maximization simultaneously.When not spraying squama valve water spray, turn down the output frequency of two frequency converters to a suitable numerical value according to spray squama sequential and the energy-conservation requirement of maximization simultaneously.
The present embodiment output frequency of turning down any frequency converter to the method for a suitable numerical value is: described PLC control device regulates the output frequency of frequency converter first linearly to decline from described de-scaling frequency (i.e. 50Hz), more linearly rises to described de-scaling frequency (i.e. 50Hz).It is two that the period that namely will adjust divides equally, within the first half time, turn down frequency to a certain frequency from 50Hz with the speed of 1Hz/ second, within the later half time, then adjusts back to 50Hz from this frequency with the speed of 1Hz/ second.
In the present embodiment, the power of every platform water jet pump is 3200KW, the general power of two water pumps is 6400KW, annual work 320 days, work every day 24 hours, average power saving rate calculates by 25%, electricity price calculates by 0.60 yuan/degree, then run the electricity charge of saving for a year to be: 6400 × 320 × 24 × 25% × 0.60=737.28 (ten thousand yuan).
The present invention is not limited to the concrete technical scheme described in above-described embodiment, and in addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacing and being formed, and are the protection domain of application claims.
Claims (3)
1. a water jet pump energy-saving control method for steel rolling descaling system, comprises the following steps:
1) be the water jet pump outlet line of powering arranges frequency converter and for regulating the PLC control device of frequency converter output frequency in steel rolling descaling system;
2) described PLC control device obtains raw information from the control centre of steel rolling descaling system, described raw information comprises steel material and comes out of the stove the time, the length of roller-way, the transmission speed of steel material on roller-way, the translational speed of steel material under milling train, the length of steel material before milling train, steel material is the thickness after milling train through the thickness before milling train and steel material, described PLC control device calculates the transmission period and the pressure rolling time period of steel material under milling train that transmit on roller-way before spray squama valve is opened according to described raw information, described transmission period and pressure rolling time period come out of the stove the time for starting point with steel material, be alternately arranged in chronological order,
The distance that described transmission period=steel material transmits on the roller-way/transmission speed of steel material on roller-way;
Described pressure rolling time period=length of steel material after the milling train/translational speed of steel material under milling train, wherein, the length of steel material after milling train=(steel material through the length before milling train × steel material through the thickness before milling train)/(steel material is through the thickness before the milling train-thickness of steel material after milling train);
3) according to step 2) the described transmission period that calculates and pressure rolling time period determine to spray the time series that squama valve opens and closes in advance,
Described PLC control device controls described spray squama valve according to this time series and opens at described transmission period and cut out in the described pressure rolling time period respectively;
Described PLC control device control frequency converter is de-scaling frequency to when the valve unlatching of spray squama the output frequency of the power supply of described water jet pump, and is less than de-scaling frequency when spraying the de-scaling gap of squama valve closedown to the output frequency of the power supply of described water jet pump; The output frequency of frequency converter when described de-scaling frequency is the hydraulic pressure making the discharge pressure of water jet pump reach needed for dephosphorization;
Circulation performs step 2) and step 3), namely complete the Energy Saving Control to water jet pump.
2. the water jet pump energy-saving control method of steel rolling descaling system according to claim 1, it is characterized in that: de-scaling gap when water injection valve cuts out in step 3), the output frequency that described PLC control device controls frequency converter first declines from described de-scaling frequency linearity, more linearly rises to described de-scaling frequency.
3. the water jet pump energy-saving control method of steel rolling descaling system according to claim 1 and 2, it is characterized in that: described steel rolling descaling system comprises two water jet pumps and three groups of spray phosphorus valves, the outlet line that now water jet pump is powered is arranged two frequency converters, wherein every platform frequency converter drives a water jet pump respectively; When de-scaling opened by two groups or three groups of spray squama valves simultaneously, then the output frequency that described PLC control device controls two frequency converters is de-scaling frequency; When only having one group to spray squama valve unlatching de-scaling, then described PLC control device controls the output frequency of a frequency converter is de-scaling frequency, and the output frequency of another frequency converter is less than de-scaling frequency; When three groups of spray squama valves all close do not spray water time, then the output frequency that described PLC control device controls two frequency converters is all less than de-scaling frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410340811.6A CN104209354B (en) | 2014-07-17 | 2014-07-17 | The water jet pump energy-saving control method of steel rolling descaling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410340811.6A CN104209354B (en) | 2014-07-17 | 2014-07-17 | The water jet pump energy-saving control method of steel rolling descaling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104209354A true CN104209354A (en) | 2014-12-17 |
| CN104209354B CN104209354B (en) | 2015-12-30 |
Family
ID=52091486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410340811.6A Expired - Fee Related CN104209354B (en) | 2014-07-17 | 2014-07-17 | The water jet pump energy-saving control method of steel rolling descaling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104209354B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234195A (en) * | 2015-10-28 | 2016-01-13 | 苏州赛斯德工程设备有限公司 | Energy-saving steel rolling phosphorous spraying device |
| CN105710143A (en) * | 2016-03-16 | 2016-06-29 | 北京金自能源科技发展有限公司 | Energy-saving modification method for hot rolling high-pressure water scale removing system based on energy accumulator and high-voltage inverter |
| CN105834232A (en) * | 2015-01-15 | 2016-08-10 | 宝钢不锈钢有限公司 | High-pressure water descaling intelligent energy-saving system and control method thereof |
| CN106944482A (en) * | 2017-03-28 | 2017-07-14 | 首钢京唐钢铁联合有限责任公司 | A kind of control method of roughing de-scaling |
| CN106971243A (en) * | 2017-03-29 | 2017-07-21 | 湘潭大学 | It is a kind of to reduce the hot rolling Optimization Scheduling of productive power cost |
| CN108405627A (en) * | 2018-01-25 | 2018-08-17 | 南京钢铁股份有限公司 | A kind of method that dynamic accurately controls milling train de-scaling taps |
| CN108906749A (en) * | 2018-09-12 | 2018-11-30 | 马鞍山钢铁股份有限公司 | A kind of control method of descaling of steel stock machine high-pressure hydraulic pump |
| CN110014043A (en) * | 2018-01-09 | 2019-07-16 | 宝山钢铁股份有限公司 | One kind can adjust de-scaling compress control method for belt steel surface classification dynamic |
| CN110788148A (en) * | 2019-11-06 | 2020-02-14 | 江苏永钢集团有限公司 | PLC-based rolling mill cooling water pump frequency modulation method |
| CN110883115A (en) * | 2019-12-13 | 2020-03-17 | 四川德胜集团钒钛有限公司 | Steel billet descaling device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11104729A (en) * | 1997-10-06 | 1999-04-20 | Kawasaki Steel Corp | Method of and equipment for descaling hot-rolled steel |
| CN101147923A (en) * | 2007-11-12 | 2008-03-26 | 二重集团（德阳）重型装备股份有限公司 | High-pressure water descaling system for hot continuous rolling production line |
| CN101559439A (en) * | 2009-05-26 | 2009-10-21 | 广州金关节能科技发展有限公司 | Energy-saving control method for multi-section descaling and control device thereof |
| EP2174729A1 (en) * | 2008-10-07 | 2010-04-14 | Siemens Aktiengesellschaft | Ignition device with pump drive with variable speed |
| CN102259119A (en) * | 2010-05-24 | 2011-11-30 | 营口流体设备制造(集团)有限公司 | Automatic circulating water descaling system for hot-rolled wire rod steel |
-
2014
- 2014-07-17 CN CN201410340811.6A patent/CN104209354B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11104729A (en) * | 1997-10-06 | 1999-04-20 | Kawasaki Steel Corp | Method of and equipment for descaling hot-rolled steel |
| CN101147923A (en) * | 2007-11-12 | 2008-03-26 | 二重集团（德阳）重型装备股份有限公司 | High-pressure water descaling system for hot continuous rolling production line |
| EP2174729A1 (en) * | 2008-10-07 | 2010-04-14 | Siemens Aktiengesellschaft | Ignition device with pump drive with variable speed |
| CN101559439A (en) * | 2009-05-26 | 2009-10-21 | 广州金关节能科技发展有限公司 | Energy-saving control method for multi-section descaling and control device thereof |
| CN102259119A (en) * | 2010-05-24 | 2011-11-30 | 营口流体设备制造(集团)有限公司 | Automatic circulating water descaling system for hot-rolled wire rod steel |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105834232A (en) * | 2015-01-15 | 2016-08-10 | 宝钢不锈钢有限公司 | High-pressure water descaling intelligent energy-saving system and control method thereof |
| CN105234195A (en) * | 2015-10-28 | 2016-01-13 | 苏州赛斯德工程设备有限公司 | Energy-saving steel rolling phosphorous spraying device |
| CN105710143A (en) * | 2016-03-16 | 2016-06-29 | 北京金自能源科技发展有限公司 | Energy-saving modification method for hot rolling high-pressure water scale removing system based on energy accumulator and high-voltage inverter |
| CN106944482A (en) * | 2017-03-28 | 2017-07-14 | 首钢京唐钢铁联合有限责任公司 | A kind of control method of roughing de-scaling |
| CN106971243B (en) * | 2017-03-29 | 2020-06-02 | 湘潭大学 | Hot rolling optimization scheduling method for reducing production power consumption cost |
| CN106971243A (en) * | 2017-03-29 | 2017-07-21 | 湘潭大学 | It is a kind of to reduce the hot rolling Optimization Scheduling of productive power cost |
| CN110014043A (en) * | 2018-01-09 | 2019-07-16 | 宝山钢铁股份有限公司 | One kind can adjust de-scaling compress control method for belt steel surface classification dynamic |
| CN110014043B (en) * | 2018-01-09 | 2020-06-23 | 宝山钢铁股份有限公司 | Control method for dynamically adjustable descaling pressure of strip steel surface grading |
| CN108405627A (en) * | 2018-01-25 | 2018-08-17 | 南京钢铁股份有限公司 | A kind of method that dynamic accurately controls milling train de-scaling taps |
| CN108405627B (en) * | 2018-01-25 | 2019-12-06 | 南京钢铁股份有限公司 | Method for dynamically and accurately controlling descaling water switch of rolling mill |
| CN108906749A (en) * | 2018-09-12 | 2018-11-30 | 马鞍山钢铁股份有限公司 | A kind of control method of descaling of steel stock machine high-pressure hydraulic pump |
| CN110788148A (en) * | 2019-11-06 | 2020-02-14 | 江苏永钢集团有限公司 | PLC-based rolling mill cooling water pump frequency modulation method |
| CN110883115A (en) * | 2019-12-13 | 2020-03-17 | 四川德胜集团钒钛有限公司 | Steel billet descaling device |
| CN110883115B (en) * | 2019-12-13 | 2022-02-18 | 四川德胜集团钒钛有限公司 | Steel billet descaling device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104209354B (en) | 2015-12-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104209354B (en) | The water jet pump energy-saving control method of steel rolling descaling system | |
| Li et al. | An energy-saving method by balancing the load of operations for hydraulic press | |
| CN101844157B (en) | Integrated roll line control-based hot rolling cooling water control method and system | |
| CN100411763C (en) | High-pressure water descaling system | |
| CN201524703U (en) | Multi-section descaling and energy-saving control device | |
| CN102755997A (en) | Safe and energy-saving control device and control method of hot rolling high-pressure descaling system | |
| CN101559439A (en) | Energy-saving control method for multi-section descaling and control device thereof | |
| CN110883103B (en) | Method for controlling uniformity of cooling temperature of rolled medium plate for ultra-fast cooling system | |
| CN100563862C (en) | The high-pressure water descaling system of hot continuous rolling production line | |
| CN105618491A (en) | Steel plate production method, device and control system for steel plate on-line solution | |
| CN102688900B (en) | Method for guaranteeing hot continuous rolling mill finish rolling outlet temperature | |
| CN201702186U (en) | Cooling water control system of hot rolling based on integral rolling line control | |
| CN102888506B (en) | Method for controlling position of plate blank at extraction end of heating furnace | |
| CN101601419A (en) | A kind of high-pressure water descaling technology and device | |
| CN104001742A (en) | Method for achieving controlled cooling on rolled pieces between and after bar finishing mill units | |
| CN105234195A (en) | Energy-saving steel rolling phosphorous spraying device | |
| CN202683616U (en) | Control system for rolled steel transmission roller table | |
| CN103909103A (en) | Slab descaling pump system and method | |
| CN105834232A (en) | High-pressure water descaling intelligent energy-saving system and control method thereof | |
| CN202030792U (en) | Water processing device for medium plate quenching line | |
| CN103495609A (en) | Small bar material through-water cooling stable device | |
| CN205258507U (en) | Energy -saving blast furnace slag water system | |
| CN102581043A (en) | Water mist cooling system and water mist cooling method for steel strip hot-rolling process | |
| CN104928463A (en) | Method for controlling quenching machine water supply system of hot-rolled steel plate heat treatment line | |
| CN108057725B (en) | Control method of descaling system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20200717 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |