Converter secondary dust removal control system

Abstract

The utility model provides a secondary dust removal control system for a converter, which comprises a dust collection pipeline, a dust removal pipeline and a dust removal pipeline, the monitoring assembly comprises a position monitoring part and a start-stop monitoring part, and the monitoring assembly is arranged on the production equipment under different working procedures; the dust collection assembly comprises a dust collection fan and adjusting valves, the dust collection fan is arranged on the downstream of the main pipeline, and the multiple adjusting valves are arranged at the tail ends of the branch pipelines under different working procedures correspondingly; the monitoring assembly and the dust collection assembly are both connected with the processing assembly. On the basis of fan frequency conversion transformation, a plurality of adjusting valves are arranged on a branch pipeline through a system in combination with working time systems of dust raising point positions of all working procedures, and the adjusting valves are connected to a processing assembly, so that the opening degrees or states of the valves are dynamically controlled, and the air volume needed by the dust raising point positions of one or more working procedures at the moment is adjusted (reduced); and the output power of the fan frequency converter is reduced, so that the power consumption index per ton of steel is further reduced.

Description

Technical Field

[0001] The utility model relates to the field of converter dust removal control, in particular to a converter secondary dust removal control system. Background Art

[0002] With the clarification of the national dual carbon goals and the energy consumption indicators of each process in the ferrous metal smelting industry, it is imperative to promote enterprises to reduce some redundant energy consumption in the pollution control process while stabilizing the supply of raw materials, production processes, and pollution control, and to take into account the deep pollution control and process costs. In the process of steel smelting, there is dust in multiple processes, and it is necessary to deal with the dust on site to ensure the on-site production environment.

[0003] In the prior art, in dealing with the dust problem in each process, a dust removal box and a dust suction pipeline are used in combination, wherein the dust suction pipeline is equipped with a main dust suction valve so that the dust generated in each process is sucked into the pipeline and finally transported to the dust removal box. In daily work, the main dust suction valve is always in a fully open state and the fan frequency is guaranteed to remain unchanged, which greatly increases the energy consumption.

[0004] The utility model attempts to solve the above problems and proposes a converter secondary dust removal control system, which is based on the fan frequency conversion transformation, combined with the working time system of the dust generation points of each process, and sets a plurality of regulating valves in the dust removal branch line routing system, and connects the plurality of regulating valves to the processing component to realize dynamic control of the valve opening or state, adjust (reduce) the air volume required at one or several dust generation points of the process at that time, and then reduce the output power of the fan inverter, so as to further reduce the power consumption index per ton of steel. Utility Model Content

[0005] The utility model provides a converter secondary dust removal control system, which arranges a plurality of remotely controllable regulating valves in branch pipelines of different working procedures, and simultaneously arranges a monitoring component and a processing component. The monitoring component monitors and analyzes the working time, equipment position and equipment status of equipment in different working procedures respectively, and the processing component processes the relevant information generated by the monitoring component, and performs comparative analysis through a database in the processing component, controls the opening of the regulating valve of the corresponding working procedure, and controls the frequency of the dust suction fan by adjusting the valve opening, so that the air volume of the dust suction fan is controlled, thereby controlling energy loss.

[0006] In order to achieve the above object, the utility model provides a converter secondary dust removal control system, comprising:

[0007] A dust suction pipeline, the dust suction pipeline includes a main pipeline and a branch pipeline, the branch pipeline is connected to the main pipeline, and the branch pipeline includes a backfill station pipeline, a bulk material belt pipeline, an alloy pipeline, a smokeproof room pipeline, a hot repair pipeline and a post-furnace argon blowing pipeline;

[0008] A monitoring component, the monitoring component includes a position monitoring component and a start-stop monitoring component, a plurality of the start-stop monitoring components are respectively arranged at the start position and the stop position of the production equipment under the backfill station pipeline, the bulk material belt pipeline, the alloy pipeline, the thermal repair pipeline and the post-furnace argon blowing pipeline, and the position monitoring component is arranged on the production equipment under the smokeproof chamber pipeline;

[0009] A dust suction component, the dust suction component comprising a dust suction fan and a regulating valve, the dust suction fan is arranged downstream of the main pipeline, the dust suction fan is connected to the plurality of branch pipelines, a plurality of regulating valves are provided, and the plurality of regulating valves are respectively arranged at the ends of the backfill station pipeline, the bulk material belt pipeline, the alloy pipeline, the smokeproof chamber pipeline, the thermal repair pipeline and the post-furnace argon blowing pipeline; and

[0010] The processing component, the monitoring component and the dust collection component are both connected to the processing component.

[0011] Furthermore, the converter secondary dust removal control system also includes a branch pipeline, and the bulk material belt pipeline, the smokeproof chamber pipeline and the backfill station pipeline are all provided with branch pipelines.

[0012] Furthermore, a regulating valve is provided at the end of the branch pipeline.

[0013] Furthermore, the processing component is a PLC controller, and the PLC controller has an input module, an output module, a processing module and a database.

[0014] Furthermore, the regulating valve is an electrically controlled valve.

[0015] Compared with the prior art, a converter secondary dust removal control system according to an embodiment of the utility model sets branch pipelines at dust-producing positions of different processes in steel smelting, and regulating valves are set at the ends of corresponding branch pipelines, and monitoring components are set on the production equipment of each process to monitor the working status of equipment in different processes in steel smelting, and form relevant data on the operation of equipment in different processes. At the same time, a processing component is set to import the relevant data measured by the monitoring component into the processing component, and the output frequency of the dust suction fan and the opening size of the regulating valve corresponding to the data are entered accordingly, so that in the process of steel smelting, the actual air volume that should be matched to the process point is judged according to the start and stop status and position of the production equipment, and the frequency of the dust suction fan is controlled by changing at any time, thereby dynamically controlling the frequency of the dust suction fan and reducing unnecessary energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic diagram of the overall dust removal routing structure of a converter secondary dust removal control system.

[0017] Reference numerals:

[0018] 1. Main pipeline; 2. Backfill station pipeline; 3. Bulk material belt pipeline; 4. Alloy pipeline; 5. Smokeproof chamber pipeline; 501. Smokeproof chamber in front of the furnace; 502. Smokeproof chamber behind the furnace;

[0019] 6. Hot repair pipeline; 7. Argon blowing pipeline after the furnace; 8. Branch pipeline; 9. Regulating valve; 10. Dust suction fan; 11. Processing components. DETAILED DESCRIPTION

[0020] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the present invention is described in detail below with reference to the embodiments.

[0021] like Figure 1 As shown, according to a converter secondary dust removal control system provided by an embodiment of the utility model, the dust collection pipeline includes a main pipeline and a branch pipeline, wherein a dust collection fan is arranged downstream of the main pipeline, the dust collection fan is connected to a plurality of branch pipelines, a plurality of regulating valves are arranged at the end of the branch pipeline, and a monitoring component is arranged on the production equipment of each process at the same time, for monitoring the time and position changes of opening and closing of the production equipment in each process, and finally a processing component is arranged, the processing component is connected to the dust collection fan, a plurality of regulating valves and a monitoring component, and the processing component controls the dust collection fan and the plurality of regulating valves through the data measured by the monitoring component.

[0022] like Figure 1 As shown, the dust collection pipeline includes a main pipeline 1 and a branch pipeline, the branch pipeline is connected to the main pipeline 1, and the branch pipeline includes a backfill station pipeline 2, a bulk material belt pipeline 3, an alloy pipeline 4, a smoke chamber pipeline 5, a hot repair pipeline 6 and a post-furnace argon blowing pipeline 7. The branch pipelines represent different process stations, so that the dust from different process stations enters the main pipeline 1 through the corresponding process pipelines.

[0023] like Figure 1 As shown, the monitoring component includes a position monitoring component and a start-stop monitoring component. Multiple start-stop monitoring components are respectively arranged on production equipment of different processes except the smokeproof chamber to monitor the opening and closing positions of the equipment, and the position monitoring component is arranged on the converter equipment in the smokeproof chamber. The position monitoring component adopts an encoder. For example, when the converter in the smokeproof chamber rotates, the encoder will generate a corresponding electrical signal, and the start-stop monitoring component adopts a current transformer. For example, when the bulk material belt transmission equipment is turned on, the motor of the bulk material belt transmission starts to generate current, and the current will be sensed by the current transformer, thereby realizing the monitoring of the bulk material belt transmission equipment. It is found that the bulk material belt transmission equipment is turned on 10 times, and each time is about 1.5 hours, so it is concluded that the bulk material belt transmission equipment is in a shutdown state for eight hours a day.

[0024] like Figure 1As shown, the dust suction component includes a dust suction fan 10 and a regulating valve 9. The dust suction fan 10 is arranged downstream of the main pipeline 1, and multiple branch pipelines are connected to the dust suction fan 10. There are multiple regulating valves 8, and multiple regulating valves 9 are respectively arranged at the ends of the backfilling station pipeline 2, the bulk material belt pipeline 3, the alloy pipeline 4, the smoke chamber pipeline 5, the hot repair pipeline 6 and the rear argon blowing pipeline 7. The dust suction fan 10 can control the air volume by adjusting the frequency of the frequency converter, and the regulating valve 9 can adjust the opening and closing angle of the valve through the remote control of the processing component 11, so that when the relevant process is not working, the regulating valve 9 of the branch pipeline of the corresponding process is closed or the air volume demand is reduced by adjusting the valve opening.

[0025] The processing component is connected to the dust suction fan and the regulating valve of the dust suction component and the monitoring component respectively. The processing component has the functions of inputting signals, outputting signals and processing signals. The processing component inputs the position information electric signal output by the monitoring component, processes the information, and controls the valve opening of the corresponding process according to the set program, thereby controlling the frequency of the variable frequency of the dust suction fan to reduce, realizing different variable frequency modes in different situations, and reducing power consumption.

[0026] Further, such as Figure 1 As shown, the converter secondary dust removal control system also includes a branch pipeline 8, and the bulk material belt pipeline 3, the smoke chamber pipeline 5 and the backfill station pipeline 2 are all provided with branch pipelines 8. For example, in the bulk material belt transmission process, there are bulk material belt receiving points and bulk material belt unloading points, both of which will generate dust, and it is necessary to set multiple branch pipelines in the bulk material belt pipeline to improve the dust collection efficiency.

[0027] Further, such as Figure 1 As shown, a regulating valve 9 is provided at the end of the branch pipeline 8. The regulating valve 9 of the branch pipeline 8 is connected to the processing component and is incorporated into the processing component to process information.

[0028] Furthermore, the processing component is a PLC controller, which has an input module, an output module, a processing module and a database. The input module corresponds to the monitoring components connected to different processes, and the output module corresponds to the regulating valves and dust suction motors connected to the pipelines of different processes. The establishment of the database includes two modes, the first is the corresponding relationship between the output frequency of the dust suction fan inverter under different openings and states of a single regulating valve 9; the second is the corresponding relationship between the output frequency of the dust suction fan inverter under different openings and states of multiple regulating valves 9.

[0029] Furthermore, the regulating valve 9 is an electrically controlled valve. The processing component outputs a control electrical signal, which can freely control the opening of the regulating valve 9.

[0030] In the embodiment of the utility model, when the steel smelting process starts, the equipment of the corresponding process starts, the monitoring component starts to monitor the start of the corresponding process, and transmits the start signal to the processing component. After the processing component 11 processes the position information, it will be fed back to the corresponding regulating valve 9 to control the opening of the regulating valve 9. Then, by feeding back the opening size of the regulating valve 9 to the processing component 11, the frequency converter frequency of the dust suction fan 10 is automatically adjusted to achieve the purpose of matching a reasonable fan speed; if there is a failure of individual process equipment during the steel smelting process, the personnel can directly control the regulating valve 9 of the relevant process branch pipeline to close through the processing component 11.

[0031] For example, through statistics, the monitoring component has concluded that under the current production load, the bulk material belt is started 10 times a day (24 hours), each time lasting about 1.5 hours, and the bulk material belt is in a shutdown state for 8 hours a day. The process at this point is in a dust-free state, and the regulating valve 9 can be closed; there are two tank folding end intervals in the tank pouring station process, and the interval is about 0.2 hours. Calculated based on 40 smelting furnaces per day, the tank folding position regulating valve 9 can be in a closed state for 8 hours a day; the alloy addition interval is 0.4 hours; calculated based on 40 smelting furnaces per day, the alloy transfer position regulating valve 9 can be in a closed state for 16 hours a day; under normal smelting conditions, during the addition of scrap steel and molten iron in front of the furnace, the 502 regulating valve 9 behind the furnace in the smokeproof room can be closed. The duration of this period for each furnace of steel is about 0.07 hours, and during the steel tapping period behind the furnace , the regulating valve 9 in front of the smokeproof room 501 can be in a closed state, and the duration of this period for each furnace of steel is about 0.07 hours; calculated based on 40 furnaces per day, the regulating valves 9 in front of the smokeproof room 501 and behind the furnace 502 can be in a closed state for 5.6 hours (2*40*0.07) per day; at the hot repair position on the east side of the converter, a short hot repair is required after the ladle unloads the molten steel. 40 furnaces are smelted every day, with an interval of about 36 minutes before and after 1 furnace, and each hot repair is about 10 minutes. The regulating valve 9 can be closed for about 17.3 hours per day (24-(40*10) / 60); argon blowing behind the furnace, a short argon blowing is required before the ladle unloads the molten steel. 40 furnaces are smelted every day, with an interval of about 36 minutes before and after 1 furnace, and each argon blowing is about 7-8 minutes. The regulating valve 9 can be closed for 18.6 hours (24-(40*8) / 60).

[0032] For example, when only the regulating valve 9 on the bulk material conveyor pipeline 3 is closed, the air volume required by the system can be reduced to 710298.74m 3 / h, the corresponding fan speed is: 550r / min; according to theoretical calculation, the power can be reduced to: 1041KW, and the power saved per day is: (2240-1041)*8=9592KW.h; when only the alloy transfer unloading points are not working, the air volume required by the system can be reduced to 805252.34m 3 / h, the corresponding fan speed is: 620r / min; according to theoretical calculation, the power can be reduced to: 1491.6KW (2240*(620 / 710)3), and the power saved per day is: (2240-1491.6)*16=11974.4KW.h; when only the backflow station is not working, the required air volume can be reduced to 535189.1m 3 / h, the corresponding fan speed of the system is: 450r / min; according to theoretical calculation, the power can be reduced: 570KW (2240*(450 / 710)3), and the power saved per day is: (2240-570)*8=13360KW.h; when only normal smelting work is performed, when the dust removal valves 501 in front of the furnace and 502 behind the furnace are closed, the air volume required by the system can be reduced to 600027m 3 / h, the corresponding fan speed is: 500r / min; according to theoretical calculation, the power can be reduced by: 1041KW (2240*(500 / 710)3), and the power saved per day is: (2240-1041)*5.8=6380KW.h; when the hot repair position is not working, the air volume required by the system can be reduced to 85458.24m 3 / h, the corresponding fan speed is: 650r / min; according to theoretical calculation, the power can be reduced by: 1718.8KW (2240*(650 / 710)3), and the power saved per day is: (2240-1718.8)*17.3=9016.76KW.h; when the argon blowing behind the furnace is not working, the air volume required by the system can be reduced to 85458.24m 3 / h, the corresponding fan speed is: 650r / min; according to theoretical calculation, the power can be reduced by: 1718.8KW (2240*(650 / 710)3), and the power saved per day is: (2240-1718.8)*17.3=9016.76KW.h. In different processes, you can choose to close the non-working process, so as to reduce the air volume and the speed corresponding to the air volume, that is, reduce the inverter output power, and then reduce the power consumption, so as to reduce the energy consumption cost.

[0033] According to a converter secondary dust removal control system of an embodiment of the utility model, the main pipeline and the branch pipeline, wherein the branch pipeline includes the backfill station pipeline, the bulk material belt pipeline, the alloy pipeline, the smokeproof chamber pipeline, the heat repair pipeline and the post-furnace argon blowing pipeline, are used to suck out the dust in the corresponding process. In the utility model, by setting a monitoring device in the equipment in different processes, wherein the monitoring component includes a position monitoring component and a start-stop monitoring component, the monitoring component is used to monitor the position and operating status of the equipment, and the working time and downtime data of each process are obtained, so as to calculate the opening time and closing time of the regulating valve of the corresponding process. In the utility model, a dust suction fan is set downstream of the main pipeline, and a plurality of regulating valves are set at the end of the branch pipeline, wherein the dust suction fan can adjust the fan frequency, thereby controlling the dust suction fan air volume, and the regulating valve can adjust the valve opening size, and control the regulating valve of the branch pipeline of the non-working process to close, so as to achieve the purpose of reducing the frequency of the dust suction fan. In the utility model, a processing component is provided, and a monitoring component and a dust collection component are all connected to the processing component. The processing component is a PLC controller, and the PLC controller has an input module, an output module, a processing module and a database. The signal of the monitoring component is input to the processing component and imported into the database to form relevant information. Then, by judging the signal of the corresponding control regulating valve, the processing component outputs the relevant signal to the regulating valve of the corresponding process, controls the opening of the regulating valve, and then compares the opening of the regulating valve with the information in the database to give the corresponding frequency control to the dust collection fan, thereby reducing the air volume and reducing energy loss.

[0034] In the description of the present invention, it is necessary to understand that the terms “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” orientations or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, any changes and modifications made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention.

Claims

1. A converter secondary dust removal control system, characterized in that: include: A dust suction pipeline, the dust suction pipeline includes a main pipeline and a branch pipeline, the branch pipeline is connected to the main pipeline, and the branch pipeline includes a backfill station pipeline, a bulk material belt pipeline, an alloy pipeline, a smokeproof room pipeline, a hot repair pipeline and a post-furnace argon blowing pipeline; A monitoring component, the monitoring component includes a position monitoring component and a start-stop monitoring component, a plurality of the start-stop monitoring components are respectively arranged at the start position and the stop position of the production equipment under the backfill station pipeline, the bulk material belt pipeline, the alloy pipeline, the thermal repair pipeline and the post-furnace argon blowing pipeline, and the position monitoring component is arranged on the production equipment in the smokeproof room; A dust suction component, the dust suction component comprises a dust suction fan and a regulating valve, the dust suction fan is arranged downstream of the main pipeline, the dust suction fan is connected to the plurality of branch pipelines, a plurality of regulating valves are provided, and the plurality of regulating valves are respectively arranged at the ends of the backfilling station pipeline, the bulk material belt pipeline, the alloy pipeline, the smokeproof chamber pipeline, the thermal repair pipeline and the rear argon blowing pipeline of the furnace; as well as The processing component, the monitoring component and the dust collection component are both connected to the processing component.

2. The converter secondary dust removal control system according to claim 1, characterized in that: It also includes branch pipelines, and the bulk material belt pipeline, the smokeproof chamber pipeline and the backfill station pipeline are all provided with branch pipelines.

3. The converter secondary dust removal control system according to claim 2, characterized in that: A regulating valve is arranged at the end of the branch pipeline.

4. The converter secondary dust removal control system according to claim 1, characterized in that: The processing component is a PLC controller, and the PLC controller has an input module, an output module, a processing module and a database.

5. The converter secondary dust removal control system according to claim 1, characterized in that: The regulating valve is an electrically controlled valve.

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