CN203144438U - Hot-blast furnace pressurizing control device - Google Patents
Hot-blast furnace pressurizing control device Download PDFInfo
- Publication number
- CN203144438U CN203144438U CN 201320041841 CN201320041841U CN203144438U CN 203144438 U CN203144438 U CN 203144438U CN 201320041841 CN201320041841 CN 201320041841 CN 201320041841 U CN201320041841 U CN 201320041841U CN 203144438 U CN203144438 U CN 203144438U
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- valve
- pressurizing
- pressurising
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- blast furnace
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Abstract
The utility model discloses a hot-blast furnace pressurizing control device, and belongs to the technical field of iron-making production equipment. The device is used for pressurizing a hot-blast furnace in an iron-making production process. According to the technical scheme, a pressurizing valve is arranged on a pressurizing cold air pipeline, an adjusting stop valve is used as the pressurizing valve, a valve position feedback signal of the pressurizing valve is connected with an input module, and a control signal of the pressurizing valve is connected with an output module; and a pressure detection element is arranged on a cold air main pipe, an electrical signal of the pressure detection element is connected with the input module, and the input module, the output module, a central processing unit (CPU) control device and an interface module are arranged on a bus bottom plate module. According to the device, the pressure detection element can be used for detecting the pressure of the pressurizing cold air pipeline; full automatic pressurizing control of pressurizing time, valve position opening, limiting amplitude and the like of the pressurizing valve is carried out through the CPU control device and multiple software, and the pressure is smoothly filled; and the influence of the pressurizing process on the pressure of the top of the blast furnace is reduced, the stabilization of the condition of the blast furnace is beneficial, and considerable economic benefits are brought.
Description
Technical field
The utility model relates to a kind of hotblast stove pressurising control device, belongs to ironmaking production unit technical field.
Background technology
Hotblast stove is the visual plant that ironmaking is produced, the pressurising process refers in the Combustion of Hot Air Furnace process, hot blast valve and cold blast valve all are in closing condition, flue gas pressures is significantly less than hotblast stove supply air system pressure in the hotblast stove below 10kPa, and very big pressure reduction is born in the valve plate both sides, hotblast stove switches to the air-supply process by combustion processes, charge into cold wind in must be from the cold wind house steward to hotblast stove, with balanced valve plate both sides pressure reduction, Open valve smoothly.The pressurising process is finished by equalizer valve, connects from the pressurising cold air duct.Equalizer valve is electronic or the trip valve that surges, and equalizer valve only has standard-sized sheet or two valve position of complete shut-down, during the hotblast stove pressurising, the blast furnace feeding air quantity reduces suddenly, cause high furnace pressure fluctuation, this phenomenon is periodically appearance along with hotblast stove changes the stove pressurising at every turn, and is unfavorable to blast furnace operating.Though the equalizer valve that has is realized rough manual aperture control by equipment such as Valve positioners, also can't realize the accurate control of full-automatic pressurising.The manual operations of the basic dependence of pressurising control operator experience, equalizer valve is in full-gear substantially, because it is uneven that the operator controls level, cause blast furnace top pressure parameter instability, make blast furnace top pressure produce huge fluctuation, influence the stable of conditions of blast furnace, this situation is not effectively solved so far, is very disadvantageous to the stably manufactured of blast furnace.
The utility model content
Technical problem to be solved in the utility model provides a kind of hotblast stove pressurising control device, this device can make blast funnace hot blast stove be in the full automatic control state in the pressurising process, reduce the pressurising process to the influence of blast furnace top pressure, be conducive to the stable of conditions of blast furnace, can bring considerable economic.
The technical scheme that solves the problems of the technologies described above is:
A kind of hotblast stove pressurising control device, comprise the pressurising cold air duct in its formation, equalizer valve, pressure detecting element, inputting modular unit, output module, the power supply module, cpu controller spare, interface module, bus mother board module and display device, one end of pressurising cold air duct connects the cold wind house steward, the other end is connected with hotblast stove, on the pressurising cold air duct equalizer valve is installed, equalizer valve is for regulating trip valve, the valve position feedback signal of equalizer valve is connected with inputting modular unit, the control signal of equalizer valve is connected with output module, pressure detecting element is installed on the cold wind house steward, the electrical signal of pressure detecting element is connected with inputting modular unit, inputting modular unit, output module, the power supply module, cpu controller spare, interface module connects by the bus mother board module and is installed on the bus mother board module.
Above-mentioned hotblast stove pressurising control device, described interface module is connected with display device, and interface module is industrial switch, Ethernet template, fieldbus, and display device is industrial computer or graphic control panel.
Above-mentioned hotblast stove pressurising control device, it is software units such as Finite Amplitude control unit, pressurising time setting unit, setting curve generation unit, soft servo control unit also, and these software units are installed on the cpu controller spare.
Usefulness of the present utility model is:
The utility model is to change equalizer valve into the adjusting trip valve by the switch trip valve, drawback that only can standard-sized sheet when having overcome equalizer valve pressurising in the past; The utility model detects the pressure of pressurising cold air duct by pressure detecting element, cpu controller spare, realize that by cpu controller spare and various software pressurising time, valve seat opening, limited amplitude etc. to equalizer valve carry out full-automatic pressurising control, carry out the pressurising operation according to pre-set valve position curve, can carry out pressurising to hotblast stove stably, reduce the pressurising process to the influence of blast furnace top pressure, be conducive to the stable of conditions of blast furnace.The utility model uses at many hotblast stoves, and is respond well, solved the blast furnace furnace roof problem of unstable that the hotblast stove pressurising of long-term puzzlement blast furnace causes, and guaranteed carrying out smoothly of blast furnace production, brought considerable economic.
Description of drawings
Fig. 1 is the composition frame chart of hotblast stove pressurising control device of the present utility model.
Mark is as follows among the figure: pressurising cold air duct 1, equalizer valve 2, pressure detecting element 3, inputting modular unit 4, output module 5, power supply module 6, cpu controller spare 7, interface module 8, bus mother board module 9, display device 10, amplitude limit control unit 11, pressurising time setting unit 12, setting curve generation unit 13, soft servo control unit 14.
Embodiment
Show among the figure, hotblast stove pressurising control device of the present utility model comprises pressurising cold air duct 1, equalizer valve 2, pressure detecting element 3, inputting modular unit 4, output module 5, power supply module 6, cpu controller spare 7, interface module 8, bus mother board module 9, display device 10, and wherein: inputting modular unit 4, output module 5, power supply module 6, cpu controller spare 7, interface module 8, bus mother board module 9 and display device 10 are the standard hardware of PLC or DCS system.Also comprise software units such as amplitude limit control unit 11, pressurising time setting unit 12, setting curve generation unit 13, soft servo control unit 14 in addition, software unit is installed on the cpu controller spare 7 of PLC or DCS system.
One end of pressurising cold air duct 1 connects the cold wind house steward, the other end is connected with hotblast stove, equalizer valve 2 is installed on the pressurising cold air duct 1, equalizer valve 2 changes the adjusting trip valve into by the switch trip valve, the valve position feedback signal of equalizer valve 2 is connected with inputting modular unit 4, and the control signal of equalizer valve 2 is connected with output module 5.
Setting pressure measuring element 3 on the cold wind house steward, the electrical signal of pressure detecting element 3 is connected with inputting modular unit 4, the pressure-controlling when being used for automatic pressurising, and the total pipe pressure of cold wind can represent blast furnace top pressure, as if cold wind house steward pressure-stabilisation, can guarantee that blast furnace top pressure is stable during pressurising.
Inputting modular unit 4, output module 5, power supply module 6, cpu controller spare 7, interface module 8 connect by bus mother board module 9 and are installed on the bus mother board module 9.Power supply module 6 provides working power.Cpu controller spare 7 is control cores of pressurising device, by software units such as cpu controller spare 7 control amplitude limit control units 11, pressurising time setting unit 12, setting curve generation unit 13, soft servo control units 14, by the automatic control of output module 5 realizations to equalizer valve 2.
Amplitude limit control unit 11 is realized the safety control to equalizer valve 2, avoids under auto state pressurising to the influence of blast furnace top pressure.
Pressurising time setting unit 12 realizes adjusting the set-up function of automatic pressurising time for and technological operating system big or small according to hotblast stove.
Setting curve generation unit 13 is for generation of time and the valve seat opening curve of equalizer valve 2.
Setting curve generation unit 12 is connected with soft servo control unit 14, the aperture curve is as the valve position set(ting)value of soft servo control unit 14, actual valve position value of feedback is as the observed value of soft servo control unit 14, soft servo control unit 14 is pressed setting curve work automatically with equalizer valve 2 valve position, and pressurising is controlled automatically and kept the stable function of blast furnace top pressure during the pressurising.
Interface module 8 is connected with display device 10, realizes human-computer interaction interface, is used for realizing operation, function for monitoring.Interface module 8 can be industrial switch, Ethernet template, fieldbus etc.Display device 10 can be industrial computer or graphic control panel etc.
In an embodiment of the present utility model, the model of equalizer valve 2 is that the model of ZDRHO, pressure detecting element 3 is that the model of EJA530A, inputting modular unit 4 is that the model of FM148A, output module 5 is that the model of FM151A, power supply module 6 is that the model of FM910, cpu controller spare 7 is that the model of FM801, interface module 8 is that the model of DFE530TXK and DES-1008, bus mother board module 9 is that the model of FM300, display device 10 is IPC-510.
Claims (3)
1. hotblast stove pressurising control device, it is characterized in that: comprise pressurising cold air duct (1) in its formation, equalizer valve (2), pressure detecting element (3), inputting modular unit (4), output module (5), power supply module (6), cpu controller spare (7), interface module (8), bus mother board module (9), display device (10), one end of pressurising cold air duct (1) connects the cold wind house steward, the other end is connected with hotblast stove, pressurising cold air duct (1) is gone up equalizer valve (2) is installed, equalizer valve (2) is for regulating trip valve, the valve position feedback signal of equalizer valve (2) is connected with inputting modular unit (4), the control signal of equalizer valve (2) is connected with output module (5), pressure detecting element (3) is installed on the cold wind house steward, the electrical signal of pressure detecting element (3) is connected with inputting modular unit (4), inputting modular unit (4), output module (5), power supply module (6), cpu controller spare (7), interface module (8) connects by bus mother board module (9) and is installed on the bus mother board module (9).
2. hotblast stove pressurising control device according to claim 1, it is characterized in that: described interface module (8) is connected with display device (10), interface module (8) is industrial switch, Ethernet template, fieldbus, and display device (10) is industrial computer or graphic control panel.
3. hotblast stove pressurising control device according to claim 1 and 2, it is characterized in that: it is Finite Amplitude control unit (11), pressurising time setting unit (12), setting curve generation unit (13), soft servo control unit software units such as (14) also, and these software units are installed on the cpu controller spare (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320041841 CN203144438U (en) | 2013-01-27 | 2013-01-27 | Hot-blast furnace pressurizing control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320041841 CN203144438U (en) | 2013-01-27 | 2013-01-27 | Hot-blast furnace pressurizing control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203144438U true CN203144438U (en) | 2013-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320041841 Withdrawn - After Issue CN203144438U (en) | 2013-01-27 | 2013-01-27 | Hot-blast furnace pressurizing control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203144438U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103088177A (en) * | 2013-01-27 | 2013-05-08 | 河北钢铁股份有限公司承德分公司 | Hot-air furnace pressure-filling control device and method |
| CN104534504A (en) * | 2014-12-25 | 2015-04-22 | 河北钢铁股份有限公司承德分公司 | Rotary kiln combustion control device and method |
| CN104950826A (en) * | 2014-03-28 | 2015-09-30 | 上海宝冶集团有限公司 | Method of simulating thermal load linkage trial run by hot blast stove |
| CN115109884A (en) * | 2022-07-13 | 2022-09-27 | 中冶京诚工程技术有限公司 | Hot blast stove changing system and method |
-
2013
- 2013-01-27 CN CN 201320041841 patent/CN203144438U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103088177A (en) * | 2013-01-27 | 2013-05-08 | 河北钢铁股份有限公司承德分公司 | Hot-air furnace pressure-filling control device and method |
| CN103088177B (en) * | 2013-01-27 | 2014-07-02 | 河北钢铁股份有限公司承德分公司 | Hot-air furnace pressure-filling control device and method |
| CN104950826A (en) * | 2014-03-28 | 2015-09-30 | 上海宝冶集团有限公司 | Method of simulating thermal load linkage trial run by hot blast stove |
| CN104950826B (en) * | 2014-03-28 | 2018-02-16 | 上海宝冶集团有限公司 | Hot-blast stove simulates thermic load linkage trial run method |
| CN104534504A (en) * | 2014-12-25 | 2015-04-22 | 河北钢铁股份有限公司承德分公司 | Rotary kiln combustion control device and method |
| CN115109884A (en) * | 2022-07-13 | 2022-09-27 | 中冶京诚工程技术有限公司 | Hot blast stove changing system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130821 Effective date of abandoning: 20140702 |
|
| RGAV | Abandon patent right to avoid regrant |