CN212409367U - Internal pressure control system of sintering machine flue gas hood - Google Patents
Internal pressure control system of sintering machine flue gas hood Download PDFInfo
- Publication number
- CN212409367U CN212409367U CN202021308886.3U CN202021308886U CN212409367U CN 212409367 U CN212409367 U CN 212409367U CN 202021308886 U CN202021308886 U CN 202021308886U CN 212409367 U CN212409367 U CN 212409367U
- Authority
- CN
- China
- Prior art keywords
- air inlet
- flue gas
- circulating fan
- calculation unit
- gas hood
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The utility model relates to a pressure control system in a sintering machine flue gas hood, which comprises a flue gas hood, an air inlet regulating valve, an air inlet main pipeline, a circulating fan air door and a control system; the air inlet control system is characterized in that the control system comprises a pressure gauge I, a pressure gauge II, a logic controller and a computer software system, wherein the pressure gauge I is arranged below each group of air inlet regulating valves, and the pressure gauge II is arranged in the air inlet main pipeline; the logic controller is electrically connected with the pressure gauge I, the pressure gauge II, the air inlet regulating valve and the air door of the circulating fan, and the computer software system is electrically connected with the logic controller; the computer software system comprises a circulating fan opening calculation unit and an air inlet adjusting valve opening calculation unit. The utility model has the advantages that: through the control of the air door and the air inlet regulating valve of the circulating fan, the pressure in the flue gas hood is finely and intelligently controlled by combining a PLC multipoint detection and comprehensive analysis algorithm, the flowing directivity of circulating flue gas is ensured, and the quality of sintered ores is improved.
Description
Technical Field
The utility model relates to an industrial computer real-time control technical field, concretely relates to pressure control system in sintering machine flue gas hood.
Background
The traditional sintering production has the characteristics of large waste gas amount, serious pollution load, various pollutants and the like, and the sintering flue gas circulation technology can well solve the problem. The flue gas circulation is a process of circularly recovering and recycling the flue gas discharged in the sintering process, and the amount of the circulating flue gas accounts for 20-30% of the total discharge amount. The technology not only reduces the total smoke discharge amount of sintering production and reduces heat loss, but also enables nitrogen oxides and sulfur oxides to generate secondary chemical reaction in the smoke circulation process, converts part of harmful substances into harmless substances and reduces the discharge of the harmful substances. The flue gas hood of the sintering machine is arranged above the sintering machine trolley to form a closed space for flue gas to flow circularly, and is an important component of flue gas circulation. Under the action of the circulating fan, sintering flue gas enters the flue gas hood from the air inlet main pipeline, then passes through sintering raw materials in the trolley to enter the air outlet pipeline, and finally flows back to the air inlet main pipeline from part of the air outlet pipeline, so that a flue gas circulating process is completed. When the pressure in the flue gas hood cannot be maintained stable, the flowing directionality of the circulating flue gas cannot be ensured, so that the sintering raw materials cannot be uniformly heated in the sintering process, and the quality of sintering finished ore is reduced. Therefore, the difficulty to be solved in sintering production is to finely control the stability of the pressure in the flue gas hood.
Disclosure of Invention
To the above-mentioned problem that exists among the prior art, the utility model aims to provide a pressure control system in sintering machine flue gas hood, this system passes through circulating fan air door and flue gas hood regulating valve's regulation control, combines multiple spot detection and comprehensive analysis algorithm based on PLC, realizes the intelligent control that becomes more meticulous of sintering machine flue gas hood internal pressure, and the directionality that the circulation flue gas flows has been guaranteed to this kind of control mode for thereby sintering raw materials is the quality that the thermally equivalent improves sintering finished ore deposit in the different stages of sintering process.
The utility model aims at realizing through the following technical scheme:
the utility model discloses a pressure control system in sintering machine flue gas hood, including the platform truck, set up the flue gas hood above the platform truck, set up the air-out pipeline that corresponds with the flue gas hood below the platform truck, set up the air inlet lateral duct above the flue gas hood, the air inlet trunk line that is connected with air inlet lateral duct, circulating fan air door, circulating fan, logic controller and computer software system; the flue gas cover is characterized in that a plurality of groups of air inlet adjusting pipes are arranged at the top of the flue gas cover at equal intervals, air inlet adjusting valves are arranged at the upper ends of the air inlet adjusting pipes, air inlet branch pipes are arranged between every two groups of air inlet adjusting pipes, a pressure gauge I is arranged below each group of air inlet adjusting pipes in the flue gas cover, and a pressure gauge II is arranged in an air inlet main pipeline; the pressure gauge I, the pressure gauge II, the air inlet regulating valve, the circulating fan air door and the circulating fan are electrically connected with the logic controller, and the computer software system is electrically connected with the logic controller;
the computer software system comprises a circulating fan air door opening calculation unit and an air inlet adjusting valve opening calculation unit, wherein the input end of the circulating fan air door opening calculation unit is connected with the output end of the logic controller, the output end of the circulating fan air door opening calculation unit is connected with the input end of the air inlet adjusting valve opening calculation unit, and the output end of the air inlet adjusting valve opening calculation unit is connected with the input end of the logic controller.
As the utility model discloses a further optimization, circulating fan opening of a wind computational element be used for calculating and confirm circulating fan opening of a wind HcThe air inlet regulating valve opening degree calculation unit is used for calculating and determining the opening degree H of the two air inlet regulating valves a and b in the combinationaAnd Hb。
As the utility model discloses a further optimization, every air inlet regulating pipe of group be two, be equipped with 4 ~ 6 groups altogether.
Compared with the prior art, the utility model has the advantages that:
the utility model discloses a circulating fan air door and flue gas cover governing valve's regulation control combines multiple spot detection and comprehensive analysis algorithm based on PLC, realizes the intelligent control that becomes more meticulous of sintering machine flue gas cover internal pressure, and the directionality that circulation flue gas flows has been guaranteed to this kind of control mode for thereby sintering raw materials is in sintering process different stages thermally equivalent improves the quality of sintering finished ore deposit.
Drawings
Fig. 1 is a schematic view of the control system of the present invention.
Fig. 2 is a schematic cross-sectional view of fig. 1.
Fig. 3 is a block diagram of the computer software system of the present invention.
Detailed Description
For a clear, detailed and complete description of the present invention, reference is made to the accompanying drawings and detailed description of the invention.
As shown in fig. 1 and fig. 2, the utility model discloses a pressure control system in flue gas hood of sintering machine, including platform truck 1, set up flue gas hood 2 above platform truck 1, set up in platform truck 1 below with flue gas hood 2 corresponding air-out pipeline 11, set up in flue gas hood 2 above air inlet branch pipeline 10, with air inlet branch pipeline 10 connected air inlet main pipe 6, circulating fan air door 8, circulating fan 9, logic controller and computer software system; the flue gas cover is characterized in that a plurality of groups of air inlet adjusting pipes 3 are arranged at the top of the flue gas cover 2 at equal intervals, air inlet adjusting valves 4 are arranged at the upper ends of the air inlet adjusting pipes 3, two air inlet adjusting pipes 3 are arranged in each group, 4-6 groups are arranged in total, air inlet branch pipes 10 are arranged between every two groups of air inlet adjusting pipes 3, and 3-5 air inlet branch pipes 10 are arranged; a pressure gauge I5 is arranged below each group of air inlet adjusting pipes 3 in the flue gas hood 2, and a pressure gauge II 9 is arranged in the air inlet main pipe 6; the pressure gauge I5, the pressure gauge II 9, the air inlet regulating valve 4, the circulating fan air door 8 and the circulating fan 7 are electrically connected with the logic controller, and the computer software system is electrically connected with the logic controller;
the computer software system comprises a circulating fan air door opening calculation unit and an air inlet adjusting valve opening calculation unit, wherein the input end of the circulating fan air door opening calculation unit is connected with the output end of the logic controller, the output end of the circulating fan air door opening calculation unit is connected with the input end of the air inlet adjusting valve opening calculation unit, and the output end of the air inlet adjusting valve opening calculation unit is connected with the input end of the logic controller.
The circulating fan wind door opening degree calculation sheetElement for calculating and determining opening H of circulating fan wind valvecThe air inlet regulating valve opening degree calculation unit is used for calculating and determining the opening degree H of the two air inlet regulating valves a and b in the combinationaAnd Hb。
During normal production, can control the pressure value in the air inlet trunk line 6 through adjusting circulating fan air door 8, indirectly adjusted the pressure value in the flue gas cover 2. However, the adjusting mode is simple, in order to meet different requirements of sintering raw materials on sintering smoke pressure in different stages of a sintering process, for the purpose of fine control, the air inlet adjusting valve 4 at the top of the smoke cover 2 is adopted to respectively fine-adjust the cover internal pressure in corresponding areas, so that sintering smoke in each area can be distributed to a sintering reaction as required.
Claims (3)
1. A pressure control system in a flue gas hood of a sintering machine comprises a trolley, a flue gas hood arranged above the trolley, an air outlet pipeline arranged below the trolley and corresponding to the flue gas hood, an air inlet branch pipeline arranged above the flue gas hood, an air inlet main pipeline connected with the air inlet branch pipeline, a circulating fan air door, a circulating fan, a logic controller and a computer software system; the flue gas cover is characterized in that a plurality of groups of air inlet adjusting pipes are arranged at the top of the flue gas cover at equal intervals, air inlet adjusting valves are arranged at the upper ends of the air inlet adjusting pipes, air inlet branch pipes are arranged between every two groups of air inlet adjusting pipes, a pressure gauge I is arranged below each group of air inlet adjusting pipes in the flue gas cover, and a pressure gauge II is arranged in an air inlet main pipeline; the pressure gauge I, the pressure gauge II, the air inlet regulating valve, the circulating fan air door and the circulating fan are electrically connected with the logic controller, and the computer software system is electrically connected with the logic controller;
the computer software system comprises a circulating fan air door opening calculation unit and an air inlet adjusting valve opening calculation unit, wherein the input end of the circulating fan air door opening calculation unit is connected with the output end of the logic controller, the output end of the circulating fan air door opening calculation unit is connected with the input end of the air inlet adjusting valve opening calculation unit, and the output end of the air inlet adjusting valve opening calculation unit is connected with the input end of the logic controller.
2. The system for controlling the pressure in the flue gas hood of the sintering machine according to claim 1, wherein the circulating fan opening calculation unit is used for calculating and determining the circulating fan opening HcThe air inlet regulating valve opening degree calculation unit is used for calculating and determining the opening degree H of the two air inlet regulating valves a and b in the combinationaAnd Hb。
3. The system for controlling the pressure in the flue gas hood of the sintering machine according to claim 1, wherein the number of each group of the air inlet adjusting pipes is two, and 4-6 groups are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021308886.3U CN212409367U (en) | 2020-07-07 | 2020-07-07 | Internal pressure control system of sintering machine flue gas hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021308886.3U CN212409367U (en) | 2020-07-07 | 2020-07-07 | Internal pressure control system of sintering machine flue gas hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212409367U true CN212409367U (en) | 2021-01-26 |
Family
ID=74405808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021308886.3U Active CN212409367U (en) | 2020-07-07 | 2020-07-07 | Internal pressure control system of sintering machine flue gas hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212409367U (en) |
-
2020
- 2020-07-07 CN CN202021308886.3U patent/CN212409367U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204730682U (en) | A kind of sintering circular-cooler waste heat recovery cigarette wind apparatus | |
| CN112665407B (en) | Hearth pressure control method for regenerative heating furnace | |
| CN212409367U (en) | Internal pressure control system of sintering machine flue gas hood | |
| CN111059030A (en) | Air compressor three-stage cooling system and method based on dynamic independent control of cooling water quantity | |
| CN208382139U (en) | A kind of flue gas recirculation system of low nitrogen burning | |
| CN110553501A (en) | Hot air sintering system and method | |
| WO2019042155A1 (en) | Plasma heating-based temperature regulation method and device for blast furnace hot air system | |
| CN104390472B (en) | Low temperature exhaust heat boiler is adopted to carry out hardening and tempering method and the modifying device of electric precipitation flue gas | |
| CN212409368U (en) | Temperature control system in flue gas hood of sintering machine | |
| CN111765776B (en) | System and method for controlling comprehensive parameters in flue gas hood of sintering machine | |
| CN212457868U (en) | System for controlling oxygen content in flue gas hood of sintering machine | |
| CN111678339A (en) | Temperature control system and method in flue gas hood of sintering machine | |
| CN111765758A (en) | System and method for controlling pressure in flue gas hood of sintering machine | |
| CN211953244U (en) | High-temperature oxygen-enriched heating furnace for extracting vanadium and titanium from vanadium-titanium slag | |
| CN115145152A (en) | Boiler combustion and denitration process collaborative optimization control method | |
| CN211737408U (en) | Air compressor tertiary cooling system based on cooling water quantity independent control | |
| CN210486462U (en) | Hot air sintering system | |
| CN211645345U (en) | Furnace gas volume-based heating furnace hearth pressure dynamic optimization control system | |
| CN107326133A (en) | Blast-furnace hot-air wind-warm syndrome monitoring method and device | |
| CN203586847U (en) | Waste heat utilization device used for smoke in large flue of sintering machine | |
| CN206502834U (en) | OG methods RECOVERY OF CONVERTER GAS and Fan Energy-saving Optimal Control System | |
| CN220892998U (en) | Flue gas circulation system | |
| CN108265153B (en) | Double-closed-loop dynamic optimization LT method converter gas recovery and fan energy-saving control method | |
| CN206488264U (en) | A kind of flue gas waste heat recovery system of unequal arrangement | |
| CN111351368A (en) | Method for improving circulating smoke rate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |