CN111020081B - Automatic optimization control structure and control method for mutual redundancy of multiple systems of blast furnace - Google Patents
Automatic optimization control structure and control method for mutual redundancy of multiple systems of blast furnace Download PDFInfo
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- CN111020081B CN111020081B CN201911140776.2A CN201911140776A CN111020081B CN 111020081 B CN111020081 B CN 111020081B CN 201911140776 A CN201911140776 A CN 201911140776A CN 111020081 B CN111020081 B CN 111020081B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/006—Automatically controlling the process
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/007—Controlling or regulating of the top pressure
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Abstract
The invention relates to a mutual redundant automatic optimization control structure and a control method for multiple systems of a blast furnace, which comprises a blast furnace body, a furnace top system, a gas cleaning system and a TRT system, wherein the blast furnace body is respectively communicated with the furnace top system, the gas cleaning system and the TRT system; the furnace top system, the gas cleaning system and the TRT system are communicated with each other; according to the invention, through the one-input-two-output transmission structure, the system signal is rapidly judged and is timely cut off when a fault occurs, and the stability coefficient of equipment control is improved.
Description
Technical Field
The invention relates to a mutual redundancy automatic optimization control structure and a control method for multiple systems of a blast furnace, and belongs to the field of industrial production.
Background
The data detection is widely applied in industrial production, and especially plays a vital role in the aspects of automatic control and regulation systems and the like; for example, in the top pressure control of a blast furnace, if the top pressure control is improper, pressure holding or pressure relief in the furnace and other related malignant problems can be caused, particularly, severe accidents are easily caused due to the pressure holding, so that an equipment system is unstable in operation and personnel are injured, and certain economic loss and other unpredictable accidents are brought to enterprises; on the basis, the invention with application number 200810219916.0 discloses a terminal acquisition device of a data acquisition and monitoring control system, which comprises a wireless data transmission unit, a data acquisition unit, a central processing unit and a power supply control module; the power output end of the power control unit is respectively connected with the data acquisition unit and the wireless data transmission unit; the data input end of the central processing unit is connected with the output end of the data acquisition unit; the data output end of the central processing unit is connected with the wireless data transmission unit; the central processing unit sends different control signals to the power supply control unit, and the power supply control unit supplies power to the data acquisition unit and the wireless data transmission unit according to the different control signals.
Although the disclosed technology realizes automatic transmission and automatic control of signals, the control system adopts single-point transmission for data acquisition, continuous and stable control cannot be realized under the influences of line faults, instrument faults, PLC control system faults, signal mutation and the like during data acquisition, and once the fault occurs, the whole control system is in an out-of-control or paralyzed state; the traditional data multi-point transmission acquisition control relates to the response speed of acquisition point positions, for example, in the top pressure control of a blast furnace, when pressure breaks down suddenly, the response speed of the acquisition point positions needs millisecond level, even redundancy is needed to meet the control requirement, and manual intervention cannot be achieved.
Disclosure of Invention
The invention provides a mutual redundancy automatic optimization control structure and a control method for multiple systems of a blast furnace, which realize the quick judgment of system signals and timely cut off when a fault occurs through a one-input and two-output transmission structure, and improve the stability coefficient of equipment control.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a mutual redundant automatic optimization control structure of multiple systems of a blast furnace comprises a blast furnace body, a furnace top system, a gas cleaning system and a TRT system, wherein the blast furnace body is respectively communicated with the furnace top system, the gas cleaning system and the TRT system;
the furnace top system, the gas cleaning system and the TRT system are communicated with each other;
as a further preferred option of the invention, the blast furnace body is communicated with a signal receiving end of a TRT system, and two signal output ends of the TRT system are respectively communicated with a signal receiving end of a gas cleaning system and a signal receiving end of a furnace top system;
the blast furnace body is communicated with a signal receiving end of a gas cleaning system, and two signal output ends of the gas cleaning system are respectively communicated with the signal receiving end of the furnace top system and the signal receiving end of the TRT system;
the blast furnace body is communicated with a signal receiving end of a furnace top system, and two signal output ends of the furnace top system are respectively communicated with the signal receiving end of a gas cleaning system and the signal receiving end of a TRT system;
as a further preferred aspect of the present invention, a first pressure detection device is provided between the blast furnace body and the TRT system, and a signal output end of the first pressure detection device is connected to a signal receiving end of the TRT system;
a second pressure detection device is arranged between the blast furnace body and the gas cleaning system, and the signal output end of the second pressure detection device is connected with the signal receiving end of the gas cleaning system;
a third pressure detection device is arranged between the blast furnace body and the furnace top system, and the signal output end of the third pressure detection device is connected with the signal receiving end of the furnace top system;
as a further preferred aspect of the present invention,
one signal output end of the gas cleaning system is connected with a signal receiving end of the furnace top system through a first signal transmission device, and the other signal output end of the gas cleaning system is connected with a signal receiving end of the TRT system through a second signal transmission device;
one signal output end of the TRT system is connected with a signal receiving end of the gas cleaning system through a third signal transmission device, and the other signal output end of the TRT system is connected with the signal receiving end of the furnace top system through a fourth signal transmission device;
one signal output end of the furnace top system is connected with a signal receiving end of the gas cleaning system through a fifth signal transmission device, and the other signal output end of the furnace top system is connected with a signal receiving end of the TRT system through a sixth signal transmission device;
a blast furnace multi-system mutual redundancy automatic optimization control method comprises the steps that a first pressure detection device, a second pressure detection device and a third pressure detection device detect three signals from a blast furnace body and acquire the three signals;
the signal detected by the first pressure detection device is transmitted to a TRT system, the TRT system transmits the received signal crack to a gas cleaning system through a third signal transmission device, and transmits the signal crack to a furnace top system through a fourth signal transmission device;
the signals detected by the second pressure detection device are transmitted to a gas cleaning system, the gas cleaning system transmits the received signal cracks to a furnace top system through the first signal transmission device, and transmits the signal cracks to a TRT system through the second signal transmission device;
the signal detected by the third pressure detection device is transmitted to the furnace top system, and the furnace top system transmits the received signal crack to the gas cleaning system through a fifth signal transmission device and transmits the signal crack to the TRT system through a sixth signal transmission device;
the method comprises the steps of presetting a set value in a system, selecting pressure values obtained by a first pressure detection device, a second pressure detection device and a third pressure detection device, converting the pressure values by a pressure conversion function block, comparing the pressure values with the set value, automatically judging and cutting off a fault state value if the pressure values are abnormal, outputting a normal pressure value, and outputting an average value of three pressure values if the pressure values are normal.
Through the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. the invention is provided with three pressure detection devices, the signal transmission of the three pressure detection devices is in a one-in-two-out transmission mode, and the data acquisition can be realized by adopting a one-out-of-three algorithm;
2. each system of the invention is powered by an independent power supply, the power supply is safe and reliable, and the system signal output paralysis caused by the fault of one line does not need to be considered;
3. the invention selects and judges the finally output stable and reliable signal after automatically detecting the signal, makes quick judgment for controlling the top pressure of the blast furnace, and simultaneously cuts off the fault in time when the fault occurs, thereby improving the stability of the blast furnace body.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic diagram of the overall circuit configuration of the preferred embodiment of the present invention.
In the figure: the pressure detecting device includes a first pressure detecting device 1, a second pressure detecting device 2, a third pressure detecting device 3, a first signal transmitting device 4, a second signal transmitting device 5, a third signal transmitting device 6, a fourth signal transmitting device 7, a fifth signal transmitting device 8, and a sixth signal transmitting device 9.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
Example 1:
as shown in fig. 1, the invention provides a multi-system mutual redundancy automatic optimization control structure of a blast furnace, which comprises a blast furnace body, a furnace TOP system, a gas cleaning system and a TRT system, wherein the furnace TOP system (TOP), the gas cleaning system (GAC) and the TRT system are three PLC systems, and the blast furnace body is respectively communicated with the furnace TOP system, the gas cleaning system and the TRT system; the furnace top system, the gas cleaning system and the TRT system are communicated with each other;
specifically, a first pressure detection device 1 is arranged between a blast furnace body and a TRT system, a signal output end of the first pressure detection device 1 is connected with a signal receiving end of the TRT system, one signal output end of the TRT system is connected with the signal receiving end of a gas cleaning system through a third signal transmission device 6, and the other signal output end of the TRT system is connected with the signal receiving end of a furnace top system through a fourth signal transmission device 7;
a second pressure detection device 2 is arranged between the blast furnace body and the gas cleaning system, the signal output end of the second pressure detection device 2 is connected with the signal receiving end of the gas cleaning system, one signal output end of the gas cleaning system is connected with the signal receiving end of the furnace top system through a first signal transmission device 4, and the other signal output end of the gas cleaning system is connected with the signal receiving end of the TRT system through a second signal transmission device 5;
a third pressure detection device 3 is arranged between the blast furnace body and the furnace top system, the signal output end of the third pressure detection device 3 is connected with the signal receiving end of the furnace top system, one signal output end of the furnace top system is connected with the signal receiving end of the gas cleaning system through a fifth signal transmission device 8, and the other signal output end of the furnace top system is connected with the signal receiving end of the TRT system through a sixth signal transmission device 9;
the first pressure detection device 1, the second pressure detection device 2 and the third pressure detection device 3 are only provided with a pressure conversion function block, so that the obtained real-time signals of the blast furnace body can be subjected to pressure regulation, and finally, the pressure regulation is output through three systems;
in the system connection structure, each system forms a transmission mode of one input and two outputs, and the signal acquisition of the blast furnace body can acquire real-time signals through any one of the systems.
Example 2:
based on the mutual redundancy automatic optimization control structure of multiple systems of the blast furnace, the method for carrying out automatic optimization control comprises the following steps: the first pressure detection device 1, the second pressure detection device 2 and the third pressure detection device 3 are used for detecting and acquiring three signals from the blast furnace body;
the signal detected by the first pressure detection device 1 is transmitted to a TRT system, the TRT system transmits the received signal crack to a gas cleaning system through a third signal transmission device 6, and transmits the signal crack to a furnace top system through a fourth signal transmission device 7;
the signals detected by the second pressure detection device 2 are transmitted to a gas cleaning system, the gas cleaning system transmits the received signal cracking to a furnace top system through a first signal transmission device 4, and transmits the signal cracking to a TRT system through a second signal transmission device 5;
the signal detected by the third pressure detection device 3 is transmitted to a furnace top system, the furnace top system transmits the received signal crack to a gas cleaning system through a fifth signal transmission device 8, and transmits the signal crack to a TRT system through a sixth signal transmission device 9;
presetting a set value in a system, selecting pressure values obtained by a first pressure detection device 1, a second pressure detection device 2 and a third pressure detection device 3, converting the pressure values by a pressure conversion function block, comparing the pressure values with the set value, automatically judging and cutting off a fault state value if the pressure values are abnormal, outputting a normal pressure value, and outputting an average value of the three pressure values if the pressure values are normal;
specifically, three pressure values obtained by a first pressure detection device 1, a second pressure detection device 2 and a third pressure detection device 3 are selected, two pressure values are combined to obtain three groups of average values, the absolute value of the difference is obtained by subtracting any two average values, and then three groups are obtained; comparing the three groups of acquired absolute values with a system set value so as to automatically judge whether the three acquired pressure values are abnormal or not;
if no abnormity exists, outputting the average value of the three pressure values obtained by the first pressure detection device 1, the second pressure detection device 2 and the third pressure detection device 3; if the abnormal condition exists, the fault state value is automatically judged and cut off, and a normal pressure value is output.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The meaning of "and/or" as used herein is intended to include both the individual components or both.
The term "connected" as used herein may mean either a direct connection between components or an indirect connection between components via other components.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (2)
1. The utility model provides a mutual redundant automatic optimization control structure of blast furnace multisystem, includes the blast furnace body, its characterized in that: the blast furnace body is communicated with the furnace top system, the gas cleaning system and the TRT system respectively;
the furnace top system, the gas cleaning system and the TRT system are communicated with each other;
the blast furnace body is communicated with a signal receiving end of a TRT system, and two signal output ends of the TRT system are respectively communicated with the signal receiving end of a gas cleaning system and the signal receiving end of a furnace top system;
the blast furnace body is communicated with a signal receiving end of a gas cleaning system, and two signal output ends of the gas cleaning system are respectively communicated with the signal receiving end of the furnace top system and the signal receiving end of the TRT system;
the blast furnace body is communicated with a signal receiving end of a furnace top system, and two signal output ends of the furnace top system are respectively communicated with the signal receiving end of a gas cleaning system and the signal receiving end of a TRT system;
a first pressure detection device is arranged between the blast furnace body and the TRT system, and the signal output end of the first pressure detection device is connected with the signal receiving end of the TRT system;
a second pressure detection device is arranged between the blast furnace body and the gas cleaning system, and the signal output end of the second pressure detection device is connected with the signal receiving end of the gas cleaning system;
a third pressure detection device is arranged between the blast furnace body and the furnace top system, and the signal output end of the third pressure detection device is connected with the signal receiving end of the furnace top system;
one signal output end of the gas cleaning system is connected with a signal receiving end of the furnace top system through a first signal transmission device, and the other signal output end of the gas cleaning system is connected with a signal receiving end of the TRT system through a second signal transmission device;
one signal output end of the TRT system is connected with a signal receiving end of the gas cleaning system through a third signal transmission device, and the other signal output end of the TRT system is connected with the signal receiving end of the furnace top system through a fourth signal transmission device;
one signal output end of the furnace top system is connected with a signal receiving end of the gas cleaning system through a fifth signal transmission device, and the other signal output end of the furnace top system is connected with a signal receiving end of the TRT system through a sixth signal transmission device;
the signal transmission of the three pressure detection devices is realized in a one-in-two-out transmission mode, and data acquisition can be realized by adopting a one-out-of-three algorithm.
2. A mutual redundancy automatic optimization control method for multiple systems of a blast furnace is characterized by comprising the following steps: the first pressure detection device, the second pressure detection device and the third pressure detection device are used for detecting and acquiring three signals from the blast furnace body;
the signal detected by the first pressure detection device is transmitted to a TRT system, the TRT system transmits the received signal crack to a gas cleaning system through a third signal transmission device, and transmits the signal crack to a furnace top system through a fourth signal transmission device;
the signals detected by the second pressure detection device are transmitted to a gas cleaning system, the gas cleaning system transmits the received signal cracks to a furnace top system through the first signal transmission device, and transmits the signal cracks to a TRT system through the second signal transmission device;
the signal detected by the third pressure detection device is transmitted to the furnace top system, and the furnace top system transmits the received signal crack to the gas cleaning system through a fifth signal transmission device and transmits the signal crack to the TRT system through a sixth signal transmission device;
presetting a set value in the system, selecting pressure values obtained by a first pressure detection device, a second pressure detection device and a third pressure detection device, converting signals in each system by a pressure conversion function block and then comparing the converted signals with the set value, automatically judging and cutting off a fault state value if the appeared pressure values are abnormal, outputting normal pressure values, and outputting the average value of the three pressure values if the appeared pressure values are normal.
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| CN109306385A (en) * | 2018-10-29 | 2019-02-05 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of blast furnace top pressure stabilizing control system and its control method |
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- 2019-11-20 CN CN201911140776.2A patent/CN111020081B/en active Active
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| JP2001164306A (en) * | 1999-12-07 | 2001-06-19 | Kawasaki Steel Corp | Device or controlling furnace op pressure in solid reducing agent filling type smelting reduction furnace |
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