CN201524703U - Multi-section descaling and energy-saving control device - Google Patents
Multi-section descaling and energy-saving control device Download PDFInfo
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- CN201524703U CN201524703U CN2009200572378U CN200920057237U CN201524703U CN 201524703 U CN201524703 U CN 201524703U CN 2009200572378 U CN2009200572378 U CN 2009200572378U CN 200920057237 U CN200920057237 U CN 200920057237U CN 201524703 U CN201524703 U CN 201524703U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 74
- 239000010959 steel Substances 0.000 claims abstract description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 238000005096 rolling process Methods 0.000 claims description 10
- 238000004146 energy storage Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 3
- 239000010687 lubricating oil Substances 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The utility model discloses a multi-section descaling and energy-saving control device comprising a descaling system and a descaling control device. The multi-section descaling and energy-saving control device is characterized in that the descaling control device consists of a temperature collecting control unit, a system pressure control unit, a steel billet position control unit, a descaling point state control unit, a steel billet quantity control unit, a descaling point flow control unit, an alarm signal control unit, a CPU central processor and a signal output module; the descaling system comprises a gas-water energy-storing tank, a descaling pump, a heating furnace, a steel billet, a furnace-rear upper-lower front descaling point, a furnace-rear upper-lower rear descaling point, a roughing upper-lower front desclaing point, a roughing upper-lower rear descaling point, a finishing upper-lower front descaling point and a finishing upper-lower rear descaling point. The multi-section descaling and energy-saving control device carries out frequency conversion adjustment control on the descaling pump by the descaling control device, detects the discharge signal of a steel billet, measures and calculates the used time, and the response speed of a frequency converter when the steel billet reaches the finance for descaling so as to obtain a frequency lower limit which can guarantee that pressure change can be responded in the period of time from discharging the steel billet to the start of descaling the steel billet, thus supplying water amount in time and leading the water yield not only to be capable of meeting the descaling requirements, but also avoiding energy waste.
Description
Technical field:
The utility model relates to steel industry hot rolling mill descaling system, particularly a kind of multi-section descaling energy-saving control device.
Background technology:
Descaling system mainly is made up of descaling pump and injection valve, its effect is the powerful impulsive force by water under high pressure, the stove that the removing hot rolling steel billet produces in heating furnace heating process is given birth to the secondary oxidation iron sheet of regenerating in the iron scale and the operation of rolling, guarantees steel finished surface quality.Need the hydraulic pressure of powerful impulsive force can guarantee that just iron scale (squama) removes fully, water pump is high-power multistage water pump (or have have preceding booster engine), it is 6KV or 10KV that supporting with it motor generally adopts voltage, Starting mode adopts string thermal resistance reduced-voltage starting modes such as (or water resistance or reactors), high pressure water system generally is the water supply in parallel of many water pumps, the maximum water consumption when output satisfies de-scaling (by maximum amount of water operation water pump quantity).De-scaling generally is divided into de-scaling behind the stove, roughing de-scaling, finish rolling de-scaling, each de-scaling point has preceding de-scaling or back de-scaling, last de-scaling or de-scaling are down arranged, each de-scaling point amount of water required might be different, and different steel billet (such as carbon steel and stainless steel) is also different at the de-scaling state (remove or do not remove) of de-scaling point, has just produced de-scaling under the multiple combined situation.Therefore, in the process of producing steel billet, following situation can appear:
1, ordinary production is in the cycle, not de-scaling state and de-scaling state are arranged, the de-scaling state has the many situations (de-scaling number of spots different with difference discharge different) few with the amount of water required of the amount of water required again, and the several different aqueous conditions of using were arranged in each cycle, each is short with the time that aqueous condition continues, have only several seconds or tens seconds, what have may reach a few minutes;
2, roll change is several times arranged every day, do not need de-scaling (promptly not needing discharge) in the roll changing time section, each roll changing time approximately needs 15 minutes;
3, in the improper production cycle, glitch occurs, do not know again how long to safeguard to finish and continue to produce.More than several situations, all be to move water pump quantity and running speed by greatest requirements discharge.Because the operation of the descaling pump of existing descaling system all is the operation with fixed frequency (50Hz), fixed qty, therefore, will cause the huge waste of energy in manufacturing process.
Summary of the invention:
The purpose of this utility model is at above deficiency, by descaling pump being carried out variable frequency adjustment control, makes water yield can satisfy system requirements, can not cause the multi-section descaling energy-saving control device of energy waste again.
The purpose of this utility model is to be achieved through the following technical solutions, the multi-section descaling energy-saving control device: comprise descaling system and de-scaling control device; It is characterized in that: described de-scaling control device is by collecting temperature control module, system pressure control module, steel billet position control unit, de-scaling dotted state control module, steel billet quantity control unit, de-scaling point flow controlling unit, alarm signal control module, cpu central processing unit, signal output module, wherein the collection signal of collecting temperature control module is connected with the signal of field apparatus temperature, environment temperature, cooling water temperature, cooling and lubricating oil temperature and frequency converter environment temperature, and all participation device operation control of all temperature spots; The system pressure control module is connected with in real time on-the-spot each gaging pressure point, participates in the control of energy saver dynamic adjustments, guarantees that descaling system system pressure under the converting operation mode satisfies the descaling process requirement; The steel billet position control unit with detect in real time steel billet position end and be connected, judge that the steel billet road speed of rolling line knows that in advance each de-scaling point will the de-scaling situation thereby understand on the whole production line the bad position of steel, make the frequency conversion output control can faster acceleration and deceleration; De-scaling dotted state control module is connected with all de-scaling point switches, judges steel billet type and descaling process requirement according to steel billet through each de-scaling dotted state, and the regulating system control model makes the converter plant optimization, and is more energy-conservation; The steel billet quantity control unit is connected at the steel billet quantity end of production line simultaneously with all, judges interior production output of steel billet road speed and accumulation a period of time; De-scaling point flow controlling unit is connected with each de-scaling point switch, analyzes steel billet type and descaling of steel stock requirement technology according to the flow size; The alarm signal control module is connected with on-the-spot different measuring point, occurs abnormal conditions when making the descaling system operation and in time reports to the police or shutdown.
Above-mentioned multi-section descaling energy-saving control device, each control module signal of described de-scaling control system connects cpu central processing unit, provide the frequency signal that descaling pump will move through the calculating of CPU internal simulation, provide startup, the stop signal of descaling pump simultaneously by cpu logic control.
Above-mentioned multi-section descaling energy-saving control device, described descaling system comprises air water energy storage canister E, descaling pump (D1, D2, D3, D4), heating furnace (A1, A2, A3), steel billet (B1, B2), preceding up and down de-scaling point (C1a behind the stove, C1b), back up and down de-scaling point (C2a behind the stove, C2b), de-scaling point (C3a before the roughing up and down, C3b), roughing is back de-scaling point (C4a up and down, C4b), de-scaling point (C5a before the finish rolling up and down, C5b), finish rolling is back de-scaling point (C6a up and down, C6b), wherein said air water energy storage canister E, descaling pump (D1, D2, D3, D4) after the connection by the road, respectively with last, down, before, each de-scaling point port of back is connected, and has constituted different steel billets and has carried out the multi-section descaling structure that difference is handled.
The beneficial effects of the utility model are: by energy-saving control device descaling pump is carried out variable frequency adjustment control, detect the steel billet signal of coming out of the stove, and calculate steel billet used time during de-scaling behind stove, and frequency converter response speed, draw one can guarantee can responding system pressure in steel billet is come out of the stove beginning de-scaling during this period of time the lower-frequency limit of variation, thereby in time amount of makeup water makes water yield can satisfy the de-scaling requirement of system, can not cause energy waste again.
Below in conjunction with accompanying drawing embodiment of the present utility model is illustrated:
Description of drawings:
Fig. 1 is a descaling system flow chart of the present utility model;
Fig. 2 is a de-scaling control device structural representation of the present utility model.
The specific embodiment:
As shown in Figure 1: low-pressure water adds through descaling pump D1, D2, D3, D4 and is pressed into water under high pressure, carries out energy storage in air water energy storage canister E, after the steel billet B1, the B2 that come out from heating furnace A1, A2, A3, B3 arrive stove up and down before de-scaling point C1a, C1b; Back up and down de-scaling point C2a, C2b behind the stove; De-scaling point C3a, C3b before the roughing up and down; Roughing is back de-scaling point C4a, C4b up and down; De-scaling point C5a, C5b before the finish rolling up and down; When the back up and down de-scaling point C6a of finish rolling, C6b, carry out the de-scaling of difference handles by different steel billets, wherein different at the de-scaling number of times of each de-scaling point, the steel billet that has needs de-scaling at certain de-scaling point, what have does not need de-scaling, when the needs de-scaling, undertaken to water under high pressure by descaling pump and air water energy storage canister.
Operation principle as shown in Figure 1 is: detect the steel billet signal of coming out of the stove, and calculate steel billet used time during de-scaling behind stove, and frequency converter response speed, draw a lower-frequency limit 1, this lower-frequency limit can guarantee can to change by response pressure in steel billet is come out of the stove beginning de-scaling during this period of time, in time amount of makeup water.Last piece descaling of steel stock finishes on the line when producing, and the steel billet of front also do not come out of the stove, and the operation that at this moment reduces speed now up to running to lower-frequency limit 1, and keeps this lower-frequency limit.This kind situation has: during roll change, when fault does not have clear and definite time again, when abnormal production cycle, the de-scaling point time is too short behind the steel billet stove if steel billet is come out of the stove, then the lower-frequency limit of She Zhiing is just very high, just smaller for energy-conservation, this moment will be from steel billet in the stove the inside number of winning the confidence, be the time signal before steel billet is come out of the stove, reach optimum energy-saving effect; To put needed discharge smaller when steel billet de-scaling behind stove, flow and the water in the air hydraulic cylinder by other power frequency operation descaling pump can satisfy, can not consider de-scaling point flow behind the stove, consider its lower-frequency limit 1 with regard to calculating come out of the stove time of roughing de-scaling of steel billet.
As shown in Figure 2: this de-scaling control device comprises collecting temperature control module, system pressure control module, steel billet position control unit, de-scaling dotted state control module, steel billet quantity control unit, de-scaling point flow controlling unit, alarm signal control module, cpu central processing unit, signal output module.Wherein the collection signal of collecting temperature control module is connected with the signal of field apparatus temperature, environment temperature, cooling water temperature, cooling and lubricating oil temperature and frequency converter environment temperature, and all participation device operation control of all temperature spots; The system pressure control module is connected with in real time on-the-spot each gaging pressure point, participates in the control of energy saver dynamic adjustments, guarantees that descaling system system pressure under the converting operation mode satisfies the descaling process requirement; The steel billet position control unit with detect in real time steel billet position end and be connected, judge that the steel billet road speed of rolling line knows that in advance each de-scaling point will the de-scaling situation thereby understand on the whole production line the bad position of steel, make the frequency conversion output control can faster acceleration and deceleration; De-scaling dotted state control module is connected with all de-scaling point switches, judges steel billet type and descaling process requirement according to steel billet through each de-scaling dotted state, and the regulating system control model makes the converter plant optimization, and is more energy-conservation; The steel billet quantity control unit is connected at the steel billet quantity end of production line simultaneously with all, judges interior production output of steel billet road speed and accumulation a period of time; De-scaling point flow controlling unit is connected with each de-scaling point switch, analyzes steel billet type and descaling of steel stock requirement technology according to the flow size; The alarm signal control module is connected with on-the-spot different measuring point, occurs abnormal conditions when making the descaling system operation and in time reports to the police or shutdown.
Work by the above-mentioned de-scaling control device of forming is originally: descaling system is observed, calculate the sequential that steel billet is produced, promptly when begin de-scaling, when not de-scaling, signals such as several de-scalings are simultaneously arranged when de-scaling, this sequential is input to compares among the CPU and calculate, different steel billet (as carbon steel and stainless steel) has different sequential, it is to produce any steel billet that CPU detects automatically, and compare and computing by sequential separately, the sequential of every kind of steel billet production all will be imported among the CPU.In the normal production cycle, promptly steel billet connects one coming according to one of ordinary production, and the parameter that will detect this moment is: steel billet is in the position of producing line, and steel billet is at the flow that de-scaling is counted and de-scaling is counted that produces line.Calculate the time of steel billet by the position, calculate the position that begins to quicken to next de-scaling point.Different flow by each point, calculate the needed flow of de-scaling point and de-scaling point combination, this flow is pressed from big to small classification successively, when when maximum stream flow makes up, then descaling pump is pressed peak frequency operation (50Hz), when not being when maximum stream flow makes up, the descaling pump frequency of this moment is reconciled by being not less than initialization system pressure, utilizes the PID controller to reconcile automatically.In the process that this PID controller is reconciled automatically, can not be lower than lower-frequency limit 2 by flow combination, lower-frequency limit 3, lower-frequency limit 4 operations such as grade have the how many kinds of flow combination, then how many lower-frequency limits can be set.When calculating the flow combination of counting less than other power frequency operation descaling pump flow, can allow the dephosphorization pump run slowly automatically this moment, detect the steel billet position simultaneously, and the flow of the next combined spot of budget, the speed that runs slowly, when wanting to satisfy the flow needs of next combined spot, can all accelerate to rapidly and satisfy flow.
Claims (3)
1. multi-section descaling energy-saving control device, comprise descaling system and de-scaling control device, it is characterized in that: described de-scaling control device is by the collecting temperature control module, the system pressure control module, the steel billet position control unit, de-scaling dotted state control module, the steel billet quantity control unit, de-scaling point flow controlling unit, the alarm signal control module, cpu central processing unit, signal output module, wherein the collection signal of collecting temperature control module and field apparatus temperature, environment temperature, cooling water temperature, the signal of cooling and lubricating oil temperature and frequency converter environment temperature is connected; The system pressure control module is connected with in real time on-the-spot each gaging pressure point, participates in the control of energy saver dynamic adjustments; The steel billet position control unit is connected with the real-time steel billet position end that detects; De-scaling dotted state control module is connected with all de-scaling point switches; The steel billet quantity control unit is connected at the steel billet quantity end of production line simultaneously with all; De-scaling point flow controlling unit is connected with each de-scaling point switch; The alarm signal control module is connected with on-the-spot different measuring point.
2. multi-section descaling energy-saving control device according to claim 1 is characterized in that: each control module signal of described de-scaling control system connects cpu central processing unit, calculates through the CPU internal simulation and provides the frequency signal that descaling pump will move; Provide startup, the stop signal of descaling pump simultaneously by cpu logic control.
3. multi-section descaling energy-saving control device according to claim 1, it is characterized in that: described descaling system comprises air water energy storage canister E, descaling pump (D1, D2, D3, D4), heating furnace (A1, A2, A3), steel billet (B1, B2), preceding up and down de-scaling point (Cla behind the stove, C1b), back up and down de-scaling point (C2a behind the stove, C2b), de-scaling point (C3a before the roughing up and down, C3b), roughing is back de-scaling point (C4a up and down, C4b), de-scaling point (C5a before the finish rolling up and down, C5b), finish rolling is back de-scaling point (C6a up and down, C6b), wherein said air water energy storage canister E, descaling pump (D1, D2, D3, D4) after the connection by the road, respectively with last, down, each de-scaling point of back is connected, and has constituted different steel billets and has carried out the multi-section descaling structure that difference is handled.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102120308A (en) * | 2010-12-04 | 2011-07-13 | 山西太钢不锈钢股份有限公司 | Method for coating and removing surface coat during hot rolling of high-nickel alloy steel |
| CN103191937A (en) * | 2012-01-10 | 2013-07-10 | 宝山钢铁股份有限公司 | Segmental descaling control method for hot continuous rolling mill |
| CN104741398A (en) * | 2015-04-01 | 2015-07-01 | 山东钢铁股份有限公司 | High-pressure scale removing water system and control method thereof |
| CN104971947A (en) * | 2014-04-10 | 2015-10-14 | 鞍钢股份有限公司 | Method for controlling liquid level of laminar flow water tank |
| 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 |
| CN107249767A (en) * | 2015-02-09 | 2017-10-13 | 东芝三菱电机产业系统株式会社 | Derusting system and its control device and control method |
| CN108906897A (en) * | 2018-06-25 | 2018-11-30 | 鑫鹏源智能装备集团有限公司 | A kind of high pressure water dephosphorization system |
| CN108941223A (en) * | 2018-06-13 | 2018-12-07 | 本钢板材股份有限公司 | A kind of hot-rolling descaler motor power saving control method |
| CN111715711A (en) * | 2020-05-06 | 2020-09-29 | 唐山钢铁集团有限责任公司 | Efficient descaling control method for hot-rolled strip production line |
| CN112007963A (en) * | 2019-05-31 | 2020-12-01 | 宝山钢铁股份有限公司 | Control method and system for dynamically adjustable descaling pressure of strip steel surface |
| CN115826496A (en) * | 2022-12-01 | 2023-03-21 | 长沙矿冶研究院有限责任公司 | Control system and control method for metal strip high-pressure water jet sand blasting cleaning production line |
| CN116786611A (en) * | 2023-06-27 | 2023-09-22 | 阳春新钢铁有限责任公司 | Multi-side performance regulation and control high-pressure water descaling spray control system and method |
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2009
- 2009-05-26 CN CN2009200572378U patent/CN201524703U/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102120308A (en) * | 2010-12-04 | 2011-07-13 | 山西太钢不锈钢股份有限公司 | Method for coating and removing surface coat during hot rolling of high-nickel alloy steel |
| CN103191937A (en) * | 2012-01-10 | 2013-07-10 | 宝山钢铁股份有限公司 | Segmental descaling control method for hot continuous rolling mill |
| CN104971947A (en) * | 2014-04-10 | 2015-10-14 | 鞍钢股份有限公司 | Method for controlling liquid level of laminar flow water tank |
| CN107249767A (en) * | 2015-02-09 | 2017-10-13 | 东芝三菱电机产业系统株式会社 | Derusting system and its control device and control method |
| CN107249767B (en) * | 2015-02-09 | 2019-03-01 | 东芝三菱电机产业系统株式会社 | Rust removal system, control device and control method thereof |
| CN104741398A (en) * | 2015-04-01 | 2015-07-01 | 山东钢铁股份有限公司 | High-pressure scale removing water 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 |
| CN108941223A (en) * | 2018-06-13 | 2018-12-07 | 本钢板材股份有限公司 | A kind of hot-rolling descaler motor power saving control method |
| CN108906897A (en) * | 2018-06-25 | 2018-11-30 | 鑫鹏源智能装备集团有限公司 | A kind of high pressure water dephosphorization system |
| CN108906897B (en) * | 2018-06-25 | 2023-08-29 | 鑫鹏源智能装备集团有限公司 | A high-pressure water phosphorus removal system |
| CN112007963A (en) * | 2019-05-31 | 2020-12-01 | 宝山钢铁股份有限公司 | Control method and system for dynamically adjustable descaling pressure of strip steel surface |
| CN111715711A (en) * | 2020-05-06 | 2020-09-29 | 唐山钢铁集团有限责任公司 | Efficient descaling control method for hot-rolled strip production line |
| CN115826496A (en) * | 2022-12-01 | 2023-03-21 | 长沙矿冶研究院有限责任公司 | Control system and control method for metal strip high-pressure water jet sand blasting cleaning production line |
| CN115826496B (en) * | 2022-12-01 | 2024-03-22 | 长沙矿冶研究院有限责任公司 | Control system and control method for high-pressure water jet sand blasting cleaning production line of metal strip |
| CN116786611A (en) * | 2023-06-27 | 2023-09-22 | 阳春新钢铁有限责任公司 | Multi-side performance regulation and control high-pressure water descaling spray control system and method |
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