CN203292450U - Novel continuous casting machine crystallizer cooling water automatic control device - Google Patents

Novel continuous casting machine crystallizer cooling water automatic control device Download PDF

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Publication number
CN203292450U
CN203292450U CN2013200797274U CN201320079727U CN203292450U CN 203292450 U CN203292450 U CN 203292450U CN 2013200797274 U CN2013200797274 U CN 2013200797274U CN 201320079727 U CN201320079727 U CN 201320079727U CN 203292450 U CN203292450 U CN 203292450U
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China
Prior art keywords
cooling water
crystallizer
temperature detector
casting machine
crystallizer cooling
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CN2013200797274U
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Chinese (zh)
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韩基伟
杨文玉
李台龙
丁晓志
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Baotou Iron and Steel Group Co Ltd
Inner Mongolia Baotou Steel Union Co Ltd
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Baotou Iron and Steel Group Co Ltd
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Abstract

The utility model discloses a novel continuous casting machine crystallizer cooling water automatic control device. The novel continuous casting machine crystallizer cooling water automatic control device comprises a data collection module and further comprises an inlet water temperature detector and a return water temperature detector, wherein the inlet water temperature detector and the return water temperature detector are respectively connected with the data collection module through cables. The novel continuous casting machine crystallizer cooling water automatic control device overcomes the defects that casting blank quality and casting safety are affected when heat-conducting properties of a crystallizer change.

Description

Novel connection casting machine crystallizer cooling water automaton
Technical field
The utility model relates to a kind of conticaster automatic control technology, especially relates to a kind of Novel connection casting machine crystallizer cooling water automaton.
Background technology
During the conticaster of metallurgical industry was produced, crystallizer was one of equipment of most critical, and the crystallizer cooling water control system is one of key factor of conticaster efficient stable production.How the high-quality work of efficient stable is the problem that people pay close attention to always to conticaster, the improper meeting of crystallizer water quench intensity affect cc billet surface quality and even bring out the serious accident of bleed-out, therefore set up reliable crystallizer cooling water water allocation model, the water distribution strategy of application of advanced is the key that improves slab quality, improves casting efficiency.
As shown in Figure 1, be the workflow diagram of model control device in prior art.The model control device comprises the structures such as electromagnetic flowmeter, data acquisition module, CPU, signal output module, pneumatic control valve, communication module, second-level model and man machine operation interface (HMI).
The cooling pool of the crystallizer of continuous casting is comprised of narrow limit, crystallizer left side, narrow limit, crystallizer right side, crystallizer fixation side, loosening four cooling zones of side of crystallizer.the crystallizer cooling water water management model that is based on strand steel grade and section of present use, namely according to different steel grades, different section is set the different crystallizer cooling water water water yields, only the crystallizer cooling water water yield changes when strand steel grade and section change, the method is take production practices as basis, reference is the water distribution quantity inducing classification of qualified strand repeatedly, and in conjunction with certain Study on Mathematic Model, the relation of the steel grade of determining and the section syncrystallization device cooling water water distribution water yield, form with water meter is stored in host computer, the crystallizer cooling water water water distribution quantity of being set according to the host computer water meter by PLC carries out PID and automatically controls.
Said method PLC can guarantee that the crystallizer water distribution quantity is consistent with section variation with steel grade.Above-mentioned crystallizer cooling water control system is only relevant with the water yield and steel grade, does not consider the heat conductivility of crystallizer.This model is in the situation that the stable use of casting cycle is no problem.
But this model has obvious defect:, only in the situation that casting cycle is stable can normally use, can't be suitable for when site environment or technological factor change.When in molten steel during the protium increased content, the heat conductivility of crystallizer protecting residue worsens, and the crystallizer heat conductivility changes.Can cause casting blank shell in crystallizer to generate inhomogeneous even base shell generation thickness deficiency if the cooling water specified rate that still according to model, calculates carries out casting, affect slab quality and even bring out bleed-out.
The utility model content
The technical problem that the utility model solves is to provide a kind of Novel connection casting machine crystallizer cooling water automaton, has overcome when the crystallizer heat conductivility changes slab quality and the safe impact of casting.
Technical scheme is as follows:
A kind of Novel connection casting machine crystallizer cooling water automaton, comprise data acquisition module, also comprise inflow temperature detector and return water temperature detector, described inflow temperature detector is connected with described data acquisition module respectively by cable with the return water temperature detector.
Further: also comprise electromagnetic flowmeter, CPU, signal output module and pneumatic control valve, described electromagnetic flowmeter is connected with described data acquisition module respectively by cable with CPU, and signal output module connects respectively described CPU and pneumatic control valve by cable.
Further: described CPU is connected with the man machine operation interface module by communication module.
Compared with prior art, technique effect comprises:
1, the utility model has considered that not only different steel grades, different section set the impact of the different crystallizer cooling water water water yields on the crystallizer cooling water water yield, regulate the crystallizer cooling water flow when also having set the crystallizer heat conductivility and changing, thereby reach when eliminating the crystallizer heat conductivility and changing the impact on strand.So the utility model has overcome when the crystallizer heat conductivility changes slab quality and the safe impact of casting.
2, utilize the utility model can save the impact that causes due to the bleed-out accident.
Bleed-out accident impact of every generation was produced 6 hours, per hour produce 240 tons, 2000 yuan of calculating of strand per ton, damage 6 * 240 * 2,00=,288 ten thousand, each bleed-out need be changed tundish, crystallizer, 0 section, fan type, crystallizer maintenance cost=200,000 yuan/, 0 section maintenance cost=150,000 yuan/of fan type, tundish expense=1.5 ten thousand yuan/.Each bleed-out loses 2,880,000 yuan+200,000 yuan+150,000 yuan+1.5 ten thousand yuan=324.5 ten thousand yuan altogether.Be that bleed-out accident of every prevention can be saved 234.5 ten thousand yuan.
Description of drawings
Fig. 1 is the workflow diagram of model control device in prior art;
Fig. 2 is the workflow diagram of model control device in the utility model;
The specific embodiment
The utility model is for affect this problem of crystallizer heat conductivility fluctuation on crystallizer cooling water water distribution quantity, develop a kind of Novel connection casting machine crystallizer cooling water automaton, when being intended to eliminate the crystallizer heat conductivility and changing on the impact of casting safety and slab quality.
The Novel connection casting machine crystallizer cooling water automaton that the utility model provides, be based on the crystallizer cooling water control device of crystallizer hot-fluid, slab steel grade and slab section.
State as Fig. 2, be the workflow diagram of model control device in the utility model.The Novel connection casting machine crystallizer cooling water automaton that the utility model provides, model control device of the prior art is improved, increased inflow temperature detector, return water temperature detector on crystallizer, inflow temperature detector, return water temperature detector are connected to data acquisition module by cable; Inflow temperature detector, return water temperature detector are for detection of the temperature of crystallizer water inlet and backwater, and crystallizer inflow temperature signal and crystallizer return water temperature signal are sent to data acquisition module by cable, the signal after data acquisition module will be processed is sent in central processing unit (CPU).
Below in conjunction with accompanying drawing 2, function and the course of work of the inflow temperature detector on crystallizer, return water temperature detector, electromagnetic flowmeter, data acquisition module, CPU, signal output module, pneumatic control valve and HMI interface module elaborated.
The inflow temperature detector, for detection of the inflow temperature of crystallizer, and the crystallizer inflow temperature signal that will detect sends to data acquisition module.
The return water temperature detector, for detection of the return water temperature of crystallizer, and the crystallizer return water temperature signal that will detect sends to data acquisition module.
Electromagnetic flowmeter, for detection of the cooling water flow of crystallizer, and be sent to data acquisition module with the cooling water flow signal.
Data acquisition module, be used for cooling water flow signal, crystallizer inflow temperature signal and crystallizer return water temperature signal are converted to the CPU discernible signal, and the signal after processing is sent in CPU.
The cooling water water allocation model, be used for setting the different crystallizer cooling water water water yields according to different steel grades, different section, only the crystallizer cooling water water yield changes when strand steel grade and section change, model is take production practices as basis, reference is the water distribution quantity inducing classification of qualified strand repeatedly, and in conjunction with certain Study on Mathematic Model, the relation of the steel grade of determining and the section syncrystallization device cooling water water distribution water yield
CPU, go out the actual heat flow value of current crystallizer according to crystallizer inflow temperature signal and crystallizer return water temperature calculated signals, and the same setting heat flow value that is stored in CPU of actual heat flow value is compared and draws the hot-fluid deviate, draw the setting cooling water flow according to the cooling water water allocation model; Go out the actual cooling water flow of current crystallizer according to the cooling water flow calculated signals of electromagnetic flowmeter; Carry out the PID computing according to setting cooling water flow and actual cooling water flow, the formation control signal, and control signal is sent to pneumatic control valve by signal output module, control pneumatic control valve and carry out regulating water flow.
Signal output module, be used for the control signal that CPU generates is sent to pneumatic control valve.
Pneumatic control valve, regulate aperture according to control signal, realizes the adjusting of crystallizer cooling water, by pneumatic control valve, carrys out crystallization control device cooling water flow, thereby reach when eliminating the crystallizer heat conductivility and changing the impact on strand.
The HMI interface module, realize and the real-time Communication for Power of CPU by communication module, can monitor constantly the signal that the transmission of PLC control system comes, and produces alarm signal and failure diagnosis information.
What more than enumerate is only a specific embodiment.Obviously the utility model not only is confined to above embodiment, and many distortion can also be arranged.As the PLC system is substituted with the DCS system.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model, all should think protection domain of the present utility model.

Claims (3)

1. Novel connection casting machine crystallizer cooling water automaton, comprise data acquisition module, its feature is finally: also comprise inflow temperature detector and return water temperature detector, described inflow temperature detector is connected with described data acquisition module respectively by cable with the return water temperature detector.
2. Novel connection casting machine crystallizer cooling water automaton as claimed in claim 1, it is characterized in that: also comprise electromagnetic flowmeter, CPU, signal output module and pneumatic control valve, described electromagnetic flowmeter is connected with described data acquisition module respectively by cable with CPU, and described signal output module connects respectively described CPU and pneumatic control valve by cable.
3. Novel connection casting machine crystallizer cooling water automaton as claimed in claim 2, it is characterized in that: described CPU is connected with the man machine operation interface module by communication module.
CN2013200797274U 2013-02-21 2013-02-21 Novel continuous casting machine crystallizer cooling water automatic control device Active CN203292450U (en)

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CN2013200797274U CN203292450U (en) 2013-02-21 2013-02-21 Novel continuous casting machine crystallizer cooling water automatic control device

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Application Number Priority Date Filing Date Title
CN2013200797274U CN203292450U (en) 2013-02-21 2013-02-21 Novel continuous casting machine crystallizer cooling water automatic control device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104162638A (en) * 2014-08-14 2014-11-26 中国重型机械研究院股份公司 Crystallizer cooling water control device and method
CN104493123A (en) * 2014-12-11 2015-04-08 天津大山铜业有限公司 Automatic temperature regulation device for casting machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104162638A (en) * 2014-08-14 2014-11-26 中国重型机械研究院股份公司 Crystallizer cooling water control device and method
CN104493123A (en) * 2014-12-11 2015-04-08 天津大山铜业有限公司 Automatic temperature regulation device for casting machine

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