CN103725813B - TRT coordination control method and system - Google Patents
TRT coordination control method and system Download PDFInfo
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- CN103725813B CN103725813B CN201410001106.3A CN201410001106A CN103725813B CN 103725813 B CN103725813 B CN 103725813B CN 201410001106 A CN201410001106 A CN 201410001106A CN 103725813 B CN103725813 B CN 103725813B
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Abstract
The invention discloses a TRT (Blast Furnace Top Gas Recovery Turbine Unit) coordination control method and system. The method comprises the following steps of: collecting the top pressure signal, the furnace condition information and the gas flow signal of a blast furnace; determining the conditions of the blast furnace by a PLC (Programmable Logic Control) system according to the top pressure signal, the furnace condition information and the gas flow signal, and then carrying out step-by-step regulation control of the TRT unit. According to the invention, the automatic protection control idea of the blast furnace fault bypass is adopted, and the all-weather operation of the TRT unit is guaranteed during the running of the blast furnace through coordinating and ordered cooperation and adjustment between a stationary blade, a bypass valve and a blast furnace pressure reducing valve bank; when the top pressure of the blast furnace is higher than the predetermined value, the TRT unit does not stop; at the same time when the stationary blade of the TRT unit is under adjustment control, the bypass joins in the adjustment control to split the gas flow which is turbined through the TRT unit; therefore, the TRT unit is protected, the top pressure of the blast furnace is guaranteed to be stable and continuous power generation of the TRT unit is effective ensured.
Description
Technical field
The present invention relates to technical field of automatic control, in particular, relate to a kind of TRT coordination control method and system.
Background technology
TRT, full name is blast-furnace top gas recovery energy recovery turbine power generation assembly, is to utilize the furnace roof of blast furnace to discharge the blast furnace gas with certain pressure and temperature, promotes turbo-expander and rotates acting, drive a kind of energy recycle device of electrical power generators.By the pressure energy contained in blast furnace gas and heat energy are reclaimed, reach energy-conservation, noise reduction, environmental protection object, having good economic benefit and social benefit, is the energy-saving environmental protection device that modern domestic, World Iron & Steel enterprise generally acknowledges.
In traditional control mode, the grid-connected rear blast furnace top pressure of TRT is by unit allocation.When abnormal conditions such as blast furnace generation material loading faults, because top pressure can be installed with definite value 5kPa higher than top, now increased instantaneously by the gas flow of TRT unit, impact TRT unit, end thrust is excessive, can cause the serious consequences such as unit damage time serious.Meanwhile, due to top pressure cannot be adjusted rapidly, the consequences such as blast furnace staying can be caused.In order to protect unit; when blast furnace top pressure is higher than set(ting)value 5kPa; TRT shuts down rapidly; this processing mode is simple and be unfavorable for blast furnace; because the circulating capacity of stator blade and controllability are higher than by-pass valve; after shutting down, stator blade exits top pressure adjustment, and bypass more uncontrollable top pressure, is unfavorable for blast fumance very much.
Therefore; guarantee that TRT can the round-the-clock running when operation of blast furnace; push up pressure high time, TRT does not shut down, stator blade open large while; bypass participates in; be diverted through the gas flow of TRT turbine, protection unit, ensure that top pressure is stable; and ensure that TRT continues generating, be those skilled in the art's problem demanding prompt solutions.
Summary of the invention
In view of this, the invention provides a kind of TRT coordination control method and system, to overcome in prior art because top pressure can be installed with definite value 5kPa higher than top, now increased instantaneously by the gas flow of TRT unit, impact TRT unit, end thrust is excessive, simultaneously, top pressure cannot be adjusted rapidly, unit damage, blast furnace staying can be caused time serious, be unfavorable for the problem of the serious consequences such as blast furnace generation.
For achieving the above object, the invention provides following technical scheme:
A kind of TRT coordination control method, comprising:
Gather top pressure signal, working of a furnace information and the gas flow signal of blast furnace;
Press signal, described working of a furnace information and described gas flow signal to judge blast furnace situation by PLC control system according to described top, the adjusted stepwise of carrying out TRT unit controls.
Wherein, describedly judge blast furnace situation by PLC control system according to described top pressure signal, described working of a furnace information and described gas flow signal, the adjusted stepwise control carrying out TRT unit specifically comprises:
Stator blade regulable control is carried out by described TRT unit when described working of a furnace information is normal;
When blast furnace breaks down situation, introduce top pressure by-pass valve and participate in carrying out cooperation control.
Wherein, the top of described collection blast furnace comprises before pressing signal, working of a furnace information and gas flow signal:
Rule of thumb fault data and Theoretical Calculation combine and set up blast furnace top pressure fault experts database, according to fault type and fault degree, control by-pass valve cooperation control.
Wherein, described when blast furnace breaks down situation, introducing top pressure by-pass valve participates in carrying out cooperation control and specifically comprises:
Judge the top pressure signal of described blast furnace, determine fault type and the fault degree of described blast furnace;
When described blast furnace top pressure is higher than set(ting)value 5kPa, then introduces main by-pass valve and participate in cooperation control and described stator blade regulable control cooperation control.
Wherein, described when blast furnace breaks down situation, introducing top pressure by-pass valve participates in carrying out cooperation control and specifically also comprises:
Judge that whether described blast furnace top pressure is higher than set(ting)value 10kPa;
If so, then, while described main by-pass valve is opened, default aperture opened rapidly by secondary by-pass valve, and opens rapidly according to described top pressure situation, controls described blast furnace top pressure and stablizes;
If not, then judge whether described working of a furnace information is seriously have some setbacks;
If so, then after described TRT unit weighs fault jumping car, while top pressure adjustment born by described main by-pass valve, default aperture opened rapidly by described secondary by-pass valve, and it is stable to control described blast furnace top pressure by pressure reducing valve of blast furnace;
If not, then described TRT unit normally runs.
The invention also discloses a kind of TRT coordinated control system, comprising:
Collecting unit, for gathering top pressure signal, working of a furnace information and the gas flow signal of blast furnace;
Regulation unit, for pressing signal, described working of a furnace information and described gas flow signal to judge blast furnace situation by PLC control system according to described top, the adjusted stepwise of carrying out TRT unit controls.
Wherein, described regulation unit specifically comprises:
Stator blade regulation unit, for carrying out stator blade regulable control when described working of a furnace information is normal by described TRT unit;
Fault accommodation control unit, for when blast furnace breaks down situation, introduces top pressure by-pass valve and participates in carrying out cooperation control.
Wherein, also comprise before described collecting unit:
Set up experts database unit, combine for rule of thumb fault data and Theoretical Calculation and set up blast furnace top pressure fault experts database, according to fault type and fault degree, control by-pass valve cooperation control.
Wherein, described fault accommodation control unit specifically comprises:
First judging unit, for judging the top pressure signal of described blast furnace, determines fault type and the fault degree of described blast furnace;
Main by-pass valve regulon, for when described blast furnace top pressure is higher than set(ting)value 5kPa, then introduces main by-pass valve and participates in cooperation control and described stator blade regulable control cooperation control.
Wherein, described fault accommodation control unit specifically also comprises:
Second judging unit, for judging that whether described blast furnace top pressure is higher than set(ting)value 10kPa;
Secondary by-pass valve regulon, during for judged result for being, then, while described main by-pass valve is opened, default aperture opened rapidly by secondary by-pass valve, and opens rapidly according to described top pressure situation, controls described blast furnace top pressure and stablizes;
3rd judging unit, for judging whether described working of a furnace information is seriously have some setbacks;
Pressure reducing valve of blast furnace regulon, during for judged result for being, then after the heavy fault of described TRT unit jumps car, while top pressure adjustment born by described main by-pass valve, default aperture opened rapidly by described secondary by-pass valve, and it is stable to control described blast furnace top pressure by pressure reducing valve of blast furnace.
Known via above-mentioned technical scheme, compared with prior art, the invention discloses a kind of TRT coordination control method and system, the method comprises: the top pressure signal, working of a furnace information and the gas flow signal that gather blast furnace; Press signal, described working of a furnace information and described gas flow signal to judge blast furnace situation by PLC control system according to described top, the adjusted stepwise of carrying out TRT unit controls.This invention adopts the automatic protecting control thinking of blast furnace fault bypass; coordinated by the harmonious orderly of stator blade, by-pass valve and pressure reducing valve of blast furnace group and regulate; guarantee the round-the-clock running when operation of blast furnace of TRT unit energy, when blast furnace top pressure is higher than preset value, TRT unit is not shut down; while TRT unit stator blade carries out regulable control; bypass participates in, and is diverted through the gas flow of TRT unit turbine, protection TRT unit; guarantee blast furnace top pressure is stablized, and effectively ensures that TRT unit continues generating.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is a kind of TRT coordination control method schema disclosed in the embodiment of the present invention;
Fig. 2 is a kind of TRT cooperation control schema disclosed in the embodiment of the present invention;
Fig. 3 is a kind of TRT cooperation control programflow chart disclosed in the embodiment of the present invention;
Fig. 4 is a kind of TRT coordinated control system structural representation disclosed in the embodiment of the present invention;
The concrete structure schematic diagram of Fig. 5 a kind of TRT coordinated control system disclosed in the embodiment of the present invention;
The concrete structure schematic diagram of Fig. 6 described fault accommodation control unit disclosed in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The invention discloses a kind of TRT coordination control method and system, this invention comprises: the top pressure signal, working of a furnace information and the gas flow signal that gather blast furnace; Press signal, described working of a furnace information and described gas flow signal to judge blast furnace situation by PLC control system according to described top, the adjusted stepwise of carrying out TRT unit controls.This invention adopts the automatic protecting control thinking of blast furnace fault bypass; coordinated by the harmonious orderly of stator blade, by-pass valve and pressure reducing valve of blast furnace group and regulate; guarantee the round-the-clock running when operation of blast furnace of TRT unit energy, when blast furnace top pressure is higher than preset value, TRT unit is not shut down; while TRT unit stator blade carries out regulable control; bypass participates in, and is diverted through the gas flow of TRT unit turbine, protection TRT unit; guarantee blast furnace top pressure is stablized, and effectively ensures that TRT unit continues generating.
Refer to accompanying drawing 1, a kind of TRT coordination control method schema disclosed in the embodiment of the present invention.The embodiment of the invention discloses a kind of TRT coordination control method, the method concrete steps comprise:
Step 101: the top pressure signal, working of a furnace information and the gas flow signal that gather blast furnace;
Step 102: press signal, described working of a furnace information and described gas flow signal to judge blast furnace situation according to described top by PLC control system, the adjusted stepwise of carrying out TRT unit controls.
Concrete, step 102 specifically comprises:
Step 1021: carry out stator blade regulable control by described TRT unit when described working of a furnace information is normal;
Step 1022: when blast furnace breaks down situation, introduces top pressure by-pass valve and participates in carrying out cooperation control.
Also comprise before step 101:
Step 100: rule of thumb fault data and Theoretical Calculation combine and set up blast furnace top pressure fault experts database, according to fault type and fault degree, controls by-pass valve cooperation control.
Concrete, above-mentioned steps 1022 specifically comprises:
Step 10221: the top pressure signal judging described blast furnace, determines fault type and the fault degree of described blast furnace;
Step 10222: when described blast furnace top pressure is higher than set(ting)value 5kPa, then introduce main by-pass valve and participate in cooperation control and described stator blade regulable control cooperation control.
Above-mentioned steps 1022 specifically also comprises:
Step 10223: judge that whether described blast furnace top pressure is higher than set(ting)value 10kPa, if so, then enters step 10224, if not, then enter step 10225;
Step 10224: then while described main by-pass valve is opened, default aperture opened rapidly by secondary by-pass valve, and open rapidly according to described top pressure situation, control described blast furnace top pressure and stablize;
Step 10225: then judge whether described working of a furnace information is seriously have some setbacks, and if so, then enters step 10226, if not, then enters step 10227;
Step 10226: after then described TRT unit weighs fault jumping car, while top pressure adjustment born by described main by-pass valve, default aperture opened rapidly by described secondary by-pass valve, and it is stable to control described blast furnace top pressure by pressure reducing valve of blast furnace;
Step 10227: then described TRT unit normally runs.
According to foregoing description, refer to accompanying drawing 2, a kind of TRT cooperation control schema disclosed in the embodiment of the present invention.Refer to accompanying drawing 3, a kind of TRT cooperation control programflow chart disclosed in the embodiment of the present invention.
TRT Coordinated Control mainly comprises control unit and signal gathering unit.Control unit is core, and the substep mainly carrying out TRT unit by PLC control system according to conditions of blast furnace controls.Regulable control is carried out by TRT unit when conditions of blast furnace is normal; To break down situation at blast furnace, during as the situation such as collapse material, fetch water, when top pressure deviation is higher than 5kPa, introducing the high main bypass of top pressure participates in controlling; In the limiting case, gas flow can become very large instantaneously, and a bypass participates in reducing rapidly stator blade burden, top pressure can continue to raise so that higher than more than set(ting)value 10kPa time, take blast furnace gas super-flow three valve to link protection; In the serious not up time of conditions of blast furnace, the heavy fault of TRT is jumped the two by-pass valve of car and is regulated protection; When TRT unit is started shooting, Smaller load is jumped car bypass and is regulated protection.Whole invention mainly ensures that blast fumance simultaneously, and TRT regulates operation comprehensively, improves generated energy.
According to described above, cooperation control concrete grammar of the present invention is as follows:
Conditions of blast furnace is smooth, and top pressure deviation, in allowed band, adopts TRT unit stator blade to carry out regulable control.
To break down situation at blast furnace; during as the situation such as collapse material, fetch water; increased instantaneously by the gas flow of TRT; top pressure deviation is greater than 5kPa; introduce the high main bypass of top pressure to participate in controlling; adopt intelligent control technology; combine according to passing fault data and Theoretical Calculation, set up blast furnace top pressure fault experts database, when blast furnace top pressure increases instantaneously; according to fault type and degree; make main by-pass valve open rapidly the numerical value of experts database inquiry, and open rapidly according to top pressure situation, until top pressure is stable; turn down according to top pressure situation, to protect unit safety again.
In the limiting case, gas flow can become very large instantaneously, and a bypass participates in reducing rapidly stator blade burden, and top pressure can continue to raise and even higher than more than set(ting)value 10kPa.Design adopts super-flow three valve interlock protecting control thinking; when top is pressed in higher than more than set(ting)value 10kPa; while main bypass is opened; certain aperture opened rapidly by secondary by-pass valve; and open rapidly according to top pressure situation, until top pressure is stable, then turn down according to predetermined rate linear according to top pressure situation; to protect unit safety, and ensure that TRT continuous service generates electricity.
Seriously have some setbacks at conditions of blast furnace, after the heavy fault of TRT jumps car, under main bypass assume responsibility for the operating mode of top pressure adjustment, also need the operating mode considering that top pressure is high.Main bypass cannot immediate stability blast furnace top pressure, and now secondary bypass opens certain aperture fast, can play the effect of pressure release.And open rapidly according to top pressure situation, until top pressure is stable, then turn down according to top pressure situation, to protect unit safety.
The invention discloses a kind of TRT coordination control method, the method comprises: the top pressure signal, working of a furnace information and the gas flow signal that gather blast furnace; Press signal, described working of a furnace information and described gas flow signal to judge blast furnace situation by PLC control system according to described top, the adjusted stepwise of carrying out TRT unit controls.This invention adopts the automatic protecting control thinking of blast furnace fault bypass; coordinated by the harmonious orderly of stator blade, by-pass valve and pressure reducing valve of blast furnace group and regulate; guarantee the round-the-clock running when operation of blast furnace of TRT unit energy, when blast furnace top pressure is higher than preset value, TRT unit is not shut down; while TRT unit stator blade carries out regulable control; bypass participates in, and is diverted through the gas flow of TRT unit turbine, protection TRT unit; guarantee blast furnace top pressure is stablized, and effectively ensures that TRT unit continues generating.
On the basis of embodiment disclosed in the invention described above, refer to accompanying drawing 4, a kind of TRT coordinated control system structural representation disclosed in the embodiment of the present invention.The embodiment of the invention also discloses a kind of TRT coordinated control system, this system concrete structure comprises: collecting unit 201, for gathering top pressure signal, working of a furnace information and the gas flow signal of blast furnace; Regulation unit 202, for pressing signal, described working of a furnace information and described gas flow signal to judge blast furnace situation by PLC control system according to described top, the adjusted stepwise of carrying out TRT unit controls.
This system adopts the automatic protecting control thinking of blast furnace fault bypass; coordinated by the harmonious orderly of stator blade, by-pass valve and pressure reducing valve of blast furnace group and regulate; guarantee the round-the-clock running when operation of blast furnace of TRT unit energy, when blast furnace top pressure is higher than preset value, TRT unit is not shut down; while TRT unit stator blade carries out regulable control; bypass participates in, and is diverted through the gas flow of TRT unit turbine, protection TRT unit; guarantee blast furnace top pressure is stablized, and effectively ensures that TRT unit continues generating.
Concrete, refer to accompanying drawing 5, a kind of TRT coordinated control system concrete structure schematic diagram disclosed in the embodiment of the present invention.Wherein, regulation unit 202 described above specifically comprises: stator blade regulation unit 2021, for carrying out stator blade regulable control when described working of a furnace information is normal by described TRT unit; Fault accommodation control unit 2022, for when blast furnace breaks down situation, introduces top pressure by-pass valve and participates in carrying out cooperation control.
Preferably, also comprised before described collecting unit: set up experts database unit 200, combine for rule of thumb fault data and Theoretical Calculation and set up blast furnace top pressure fault experts database, according to fault type and fault degree, control by-pass valve cooperation control.
Wherein, refer to accompanying drawing 6, the concrete structure schematic diagram of described fault accommodation control unit disclosed in the embodiment of the present invention.Described fault accommodation control unit 2022 specifically comprises: the first judging unit 20221, for judging the top pressure signal of described blast furnace, determines fault type and the fault degree of described blast furnace; Main by-pass valve regulon 20222, for when described blast furnace top pressure is higher than set(ting)value 5kPa, then introduces main by-pass valve and participates in cooperation control and described stator blade regulable control cooperation control.
Wherein, described fault accommodation control unit 2022 specifically also comprises: the second judging unit 20223, for judging that whether described blast furnace top pressure is higher than set(ting)value 10kPa; Secondary by-pass valve regulon 20224, during for judged result for being, then, while described main by-pass valve is opened, default aperture opened rapidly by secondary by-pass valve, and opens rapidly according to described top pressure situation, controls described blast furnace top pressure and stablizes; 3rd judging unit 20225, for judging whether described working of a furnace information is seriously have some setbacks; Pressure reducing valve of blast furnace regulon 20226, during for judged result for being, then after the heavy fault of described TRT unit jumps car, while top pressure adjustment born by described main by-pass valve, default aperture opened rapidly by described secondary by-pass valve, and it is stable to control described blast furnace top pressure by pressure reducing valve of blast furnace.
In sum: the invention discloses a kind of TRT coordination control method and system, the method comprises: the top pressure signal, working of a furnace information and the gas flow signal that gather blast furnace; Press signal, described working of a furnace information and described gas flow signal to judge blast furnace situation by PLC control system according to described top, the adjusted stepwise of carrying out TRT unit controls.This invention adopts the automatic protecting control thinking of blast furnace fault bypass; coordinated by the harmonious orderly of stator blade, by-pass valve and pressure reducing valve of blast furnace group and regulate; guarantee the round-the-clock running when operation of blast furnace of TRT unit energy, when blast furnace top pressure is higher than preset value, TRT unit is not shut down; while TRT unit stator blade carries out regulable control; bypass participates in, and is diverted through the gas flow of TRT unit turbine, protection TRT unit; guarantee blast furnace top pressure is stablized, and effectively ensures that TRT unit continues generating.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (2)
1. a TRT coordination control method, is characterized in that, comprising:
Gather top pressure signal, working of a furnace information and the gas flow signal of blast furnace;
Press signal, described working of a furnace information and described gas flow signal to judge blast furnace situation by PLC control system according to described top, the adjusted stepwise of carrying out TRT unit controls;
Wherein, describedly judge blast furnace situation by PLC control system according to described top pressure signal, described working of a furnace information and described gas flow signal, the adjusted stepwise control carrying out TRT unit specifically comprises:
Stator blade regulable control is carried out by described TRT unit when described working of a furnace information is normal;
When blast furnace breaks down situation, introduce top pressure by-pass valve and participate in carrying out cooperation control;
Wherein, the top of described collection blast furnace comprises before pressing signal, working of a furnace information and gas flow signal:
Rule of thumb fault data and Theoretical Calculation combine and set up blast furnace top pressure fault experts database, according to fault type and fault degree, control by-pass valve cooperation control;
Wherein, described when blast furnace breaks down situation, introducing top pressure by-pass valve participates in carrying out cooperation control and specifically comprises:
Judge the top pressure signal of described blast furnace, determine fault type and the fault degree of described blast furnace;
When described blast furnace top pressure is higher than set(ting)value 5kPa, then introduces main by-pass valve and participate in cooperation control and described stator blade regulable control cooperation control;
Wherein, described when blast furnace breaks down situation, introducing top pressure by-pass valve participates in carrying out cooperation control and specifically also comprises:
Judge that whether described blast furnace top pressure is higher than set(ting)value 10kPa;
If so, then, while described main by-pass valve is opened, default aperture opened rapidly by secondary by-pass valve, and opens rapidly according to described top pressure situation, controls described blast furnace top pressure and stablizes;
If not, then judge whether described working of a furnace information is seriously have some setbacks;
If so, then after described TRT unit weighs fault jumping car, while top pressure adjustment born by described main by-pass valve, default aperture opened rapidly by described secondary by-pass valve, and it is stable to control described blast furnace top pressure by pressure reducing valve of blast furnace;
If not, then described TRT unit normally runs.
2. a TRT coordinated control system, is characterized in that, comprising:
Collecting unit, for gathering top pressure signal, working of a furnace information and the gas flow signal of blast furnace;
Regulation unit, for pressing signal, described working of a furnace information and described gas flow signal to judge blast furnace situation by PLC control system according to described top, the adjusted stepwise of carrying out TRT unit controls;
Wherein, described regulation unit specifically comprises:
Stator blade regulation unit, for carrying out stator blade regulable control when described working of a furnace information is normal by described TRT unit;
Fault accommodation control unit, for when blast furnace breaks down situation, introduces top pressure by-pass valve and participates in carrying out cooperation control;
Wherein, also comprise before described collecting unit:
Set up experts database unit, combine for rule of thumb fault data and Theoretical Calculation and set up blast furnace top pressure fault experts database, according to fault type and fault degree, control by-pass valve cooperation control;
Wherein, described fault accommodation control unit specifically comprises:
First judging unit, for judging the top pressure signal of described blast furnace, determines fault type and the fault degree of described blast furnace;
Main by-pass valve regulon, for when described blast furnace top pressure is higher than set(ting)value 5kPa, then introduces main by-pass valve and participates in cooperation control and described stator blade regulable control cooperation control;
Wherein, described fault accommodation control unit specifically also comprises:
Second judging unit, for judging that whether described blast furnace top pressure is higher than set(ting)value 10kPa;
Secondary by-pass valve regulon, during for judged result for being, then, while described main by-pass valve is opened, default aperture opened rapidly by secondary by-pass valve, and opens rapidly according to described top pressure situation, controls described blast furnace top pressure and stablizes;
3rd judging unit, for judging whether described working of a furnace information is seriously have some setbacks;
Pressure reducing valve of blast furnace regulon, during for judged result for being, then after the heavy fault of described TRT unit jumps car, while top pressure adjustment born by described main by-pass valve, default aperture opened rapidly by described secondary by-pass valve, and it is stable to control described blast furnace top pressure by pressure reducing valve of blast furnace.
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| CN201410001106.3A CN103725813B (en) | 2014-01-02 | 2014-01-02 | TRT coordination control method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104372126B (en) * | 2014-10-31 | 2016-04-20 | 江苏永钢集团有限公司 | A kind of blast furnace top pressure signal control method controlled based on TRTPLC |
| CN105986047A (en) * | 2015-02-25 | 2016-10-05 | 鞍钢股份有限公司 | Control method for bearing bush grinding of blast furnace gas excess pressure generator set |
| CN112094971A (en) * | 2019-06-17 | 2020-12-18 | 宝钢集团新疆八一钢铁有限公司 | Four-valve-bank control optimization method for blast furnace |
| CN110425231B (en) * | 2019-08-28 | 2021-03-09 | 西安陕鼓动力股份有限公司 | Trip control system and method for BPRT set speed change clutch |
| CN113373272B (en) * | 2021-06-11 | 2022-08-02 | 山东钢铁股份有限公司 | Control method for top pressure of blast furnace |
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| CN102010921A (en) * | 2010-12-30 | 2011-04-13 | 攀钢集团钢铁钒钛股份有限公司 | Top pressure automatic control method for bell blast furnace top gas recovery turbine unit (TRT) |
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