CN116497165A - Blowing tank pressure relief device of intelligent blowing system of blast furnace and working method thereof - Google Patents
Blowing tank pressure relief device of intelligent blowing system of blast furnace and working method thereof Download PDFInfo
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- CN116497165A CN116497165A CN202310551550.1A CN202310551550A CN116497165A CN 116497165 A CN116497165 A CN 116497165A CN 202310551550 A CN202310551550 A CN 202310551550A CN 116497165 A CN116497165 A CN 116497165A
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- pressure relief
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- relief pipeline
- main pipe
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- 238000007664 blowing Methods 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000003245 coal Substances 0.000 claims abstract description 33
- 239000000843 powder Substances 0.000 claims abstract description 31
- 238000010926 purge Methods 0.000 claims abstract description 27
- 239000004744 fabric Substances 0.000 claims abstract description 21
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 6
- 239000011261 inert gas Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 238000010408 sweeping Methods 0.000 claims 1
- 239000002817 coal dust Substances 0.000 abstract description 7
- 238000005303 weighing Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009924 canning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/16—Tuyéres
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
The invention discloses a blowing tank pressure relief device of an intelligent blast furnace blowing system and a working method thereof, wherein the pressure relief device comprises a coal mill, a cloth bag powder collector, a coal dust bin, a blowing tank, a pressure relief pipeline, an inter-valve diffusing pipeline and a purging air source pipeline, the pressure relief pipeline comprises a pressure relief main pipe, a first pressure relief pipeline, a second pressure relief pipeline, a third pressure relief pipeline and an emergency pressure relief pipeline, the pressure relief main pipe is connected with the blowing tank, the first pressure relief pipeline is communicated with the pressure relief main pipe and the coal dust bin, the second pressure relief pipeline is communicated with the pressure relief main pipe and the cloth bag powder collector, the third pressure relief pipeline is communicated with the pressure relief main pipe and a mill outlet pipeline, the emergency pressure relief pipeline is communicated with the blowing tank and the mill outlet pipeline, the inter-valve diffusing pipeline is communicated with the powder filling pipeline and the mill outlet pipeline, and the purging air source pipeline is respectively connected with the first pressure relief pipeline and the second pressure relief pipeline.
Description
Technical Field
The invention relates to a blast furnace coal injection system, in particular to a blowing tank pressure relief device of an intelligent blast furnace blowing system and a working method thereof.
Background
The intelligent coal injection technology of large blast furnace coal injection is gradually mature, and the labor intensity of personnel is greatly reduced. The existing intelligent blowing often encounters the blockage of a pressure relief pipeline of a blowing tank, and then cannot be processed, so that an intelligent program is interrupted, and manual intervention is needed; or the pressure release pipelines between the blowing tanks are mutually influenced, the pressure release pipelines and the valves are influenced by the influence of the diffusion pipelines, and the weighing system of the blowing tanks is influenced, so that the complete accurate intelligent operation cannot be realized.
Disclosure of Invention
The invention aims to: the invention aims to provide a blowing tank pressure relief device of an intelligent blowing system of a blast furnace and a working method thereof, which are used for reducing the influence of blockage of the pressure relief system on intelligent blowing.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a blast furnace intelligence jetting system jetting jar pressure relief device, includes coal pulverizer, sack receipts powder ware, buggy storehouse, jetting jar, pressure release pipeline, valve between diffuse pipeline, sweep air source pipeline, and the coal pulverizer passes through mill outlet pipe and connects the sack and receive the powder ware, and the buggy storehouse is received to the sack, and buggy storehouse passes through dress powder pipeline connection jetting jar, and buggy storehouse sets up storehouse top sack, pressure detection element, its characterized in that: the pressure relief pipeline comprises a pressure relief main pipe, a first pressure relief pipeline, a second pressure relief pipeline, a third pressure relief pipeline and an emergency pressure relief pipeline, wherein the pressure relief main pipe is connected with the blowing tank, the first pressure relief pipeline is communicated with the pressure relief main pipe and the pulverized coal bin, the second pressure relief pipeline is communicated with the pressure relief main pipe and the cloth bag powder collector, the third pressure relief pipeline is communicated with the pressure relief main pipe and the outlet pipeline of the mill, the emergency pressure relief pipeline is communicated with the blowing tank and the outlet pipeline of the mill, the valve is communicated with the powder filling pipeline and the outlet pipeline of the mill, the purging air source pipeline is respectively connected with the first pressure relief pipeline and the second pressure relief pipeline, the pressure relief main pipe is provided with a pressure detection element, and the pressure relief main pipe, the first pressure relief pipeline, the second pressure relief pipeline, the third pressure relief pipeline, the emergency pressure relief pipeline, the valve is provided with a control valve group, and the purging air source pipeline are all provided with a control valve group.
Further, the quantity of jetting jar is two at least, and all jetting jars adopt parallelly connected setting, and every jetting jar corresponds a set of pressure release pipeline, and each pressure release pipeline of group is not continuous each other.
Further, the pressure relief header pipe comprises a first-stage pressure relief pipeline and a second-stage pressure relief pipeline which are arranged in parallel, and the first-stage pressure relief pipeline and the second-stage pressure relief pipeline adopt different pipe diameters.
Further, the control valve groups of the pressure relief main pipe, the first pressure relief pipeline, the second pressure relief pipeline, the third pressure relief pipeline, the emergency pressure relief pipeline and the inter-valve relief pipeline all adopt wear-resistant pneumatic valves.
Further, the outer walls of the pressure relief main pipe, the first pressure relief pipeline, the second pressure relief pipeline, the third pressure relief pipeline and the emergency pressure relief pipeline are all coated with heat insulation layers.
Furthermore, the purging air source pipeline is connected with an inert gas source, and a control valve group of the purging air source pipeline adopts a pneumatic valve.
The working method of the blowing tank pressure relief device of the intelligent blowing system of the blast furnace comprises the following steps:
according to the pressure value of the pulverized coal bin and the running condition of a cloth bag at the top of the bin, the first pressure relief pipeline or the second pressure relief pipeline is used as a pressure relief channel, gas in the blowing tank is discharged to the cloth bag powder collector or the pulverized coal bin through the pressure relief channel, the pressure value of the pulverized coal bin, the pressure relief main pipe and the blowing tank is detected in real time in the gas discharging process, and the pressure relief channel is adjusted and optimized in real time according to the pressure value.
Further, when the cloth bag at the top of the bin runs and the pressure of the pulverized coal bin reaches a first set value, a control valve group of the first pressure relief pipeline is opened, a control valve group of the second pressure relief pipeline, the third pressure relief pipeline, the inter-valve relief pipeline and the emergency pressure relief pipeline is closed, and the first pressure relief pipeline is used as a pressure relief channel; when the cloth bag at the top of the bin does not run or the pressure of the pulverized coal bin does not reach a first set value, a control valve group of the second pressure relief pipeline is opened, the control valve groups of the first pressure relief pipeline, the third pressure relief pipeline, the inter-valve relief pipeline and the emergency pressure relief pipeline are closed, and the second pressure relief pipeline is used as a pressure relief channel.
Further, when the first pressure relief pipeline is used as a pressure relief channel, the pressure values of the coal dust bin and the pressure relief main pipe are detected in real time, when the pressure value of the coal dust bin is obviously reduced and the pressure value of the pressure relief main pipe is obviously increased, the pressure relief channel is judged to have a blocking trend, at the moment, a control valve group of a third pressure relief pipeline is opened, the third pressure relief pipeline and the first pressure relief pipeline are used as the pressure relief channel together, and auxiliary emergency pressure relief is carried out on the pressure relief channel through the third pressure relief pipeline;
when the second pressure relief pipeline is used as a pressure relief channel, the pressure value of the pressure relief main pipe is real-time, when the pressure value of the pressure relief main pipe reaches a second set value, the pressure relief pipeline is judged to have a blocking trend, at the moment, a control valve group of a third pressure relief pipeline is opened, the third pressure relief pipeline and the second pressure relief pipeline are used as pressure relief channels together, and auxiliary emergency pressure relief is carried out on the pressure relief channels through the third pressure relief pipeline;
in the auxiliary emergency pressure relief process of the third pressure relief pipeline, detecting the pressure values of the pressure relief main pipe and the blowing tank in real time, and opening a control valve group of the emergency pressure relief pipeline to emergently relieve pressure of the pressure relief channel through the emergency pressure relief pipeline if the pressure value of the pressure relief main pipe or the pressure value of the blowing tank does not drop to a third set value within a set time;
after the auxiliary emergency pressure relief is finished, the pressure relief pipeline is purged through a purging air source pipeline.
Further, when purging the pressure relief pipeline, the control valve group of the first pressure relief pipeline, the second pressure relief pipeline and the third pressure relief pipeline is closed, the control valve group of the pressure relief main pipeline, the emergency pressure relief pipeline and the purging air source pipeline is opened, the pressure relief main pipeline is purged to clear the blockage through the purging air source pipeline, the clear blockage condition of the pressure relief main pipeline is judged by detecting the pressure value of the pressure relief main pipeline, after the clear blockage of the pressure relief main pipeline is finished, the control valve group of the emergency pressure relief pipeline is closed, the control valve group of the first pressure relief pipeline, the second pressure relief pipeline and the third pressure relief pipeline is sequentially opened, and the first pressure relief pipeline, the second pressure relief pipeline and the third pressure relief pipeline are purged to clear the blockage respectively.
The beneficial effects are that: by adopting the pressure relief device and the working method thereof, various working conditions and emergency situations which possibly occur in the pressure relief operation process of the existing large-scale intelligent blast furnace injection system can be solved, the emergency treatment and automatic blockage clearing of the blockage of the pressure relief pipeline can be carried out, and the influence of the fault of the pressure relief system on the operation of the intelligent blast furnace injection system can be reduced to the greatest extent.
Drawings
Fig. 1 is a schematic structural diagram of a blowing tank pressure relief device of an intelligent blowing system of a blast furnace.
In the figure: 1-a blowing tank; 2-an emergency pressure relief pipeline; 3-mill outlet duct; 4-a valve-to-valve bleed line; 5-a third pressure relief pipeline; 6-a powder filling pipeline; 7-a pressure relief main pipe; 8-a second pressure relief pipeline; 9-a cloth bag powder collector; 10-a coal dust bin; 11-a first pressure relief conduit; 12-a purge gas source pipeline.
The specific embodiment is as follows:
the invention is further explained below with reference to the drawings.
As shown in fig. 1, the pressure relief device of the blowing tank of the intelligent blowing system of the blast furnace comprises a coal mill (not shown in the drawing), a cloth bag powder collector 9, a coal powder bin 10, a blowing tank 1, a pressure relief pipeline, a valve-to-valve diffusing pipeline 4 and a purging air source pipeline 12, wherein the coal mill is connected with the cloth bag powder collector 9 through a mill outlet pipeline 3, the cloth bag powder collector 9 is connected with a coal powder bin 10, the coal powder bin 10 is connected with the blowing tank 1 through a powder filling pipeline 6, and the coal powder bin 10 is provided with a bin top cloth bag and a pressure detection element.
The pressure release pipeline includes pressure release house steward 7, first pressure release pipeline 11, second pressure release pipeline 8, third pressure release pipeline 5, urgent pressure release pipeline 2, pressure release house steward 7 connects jetting jar 1, first pressure release pipeline 11 intercommunication pressure release house steward 7 and buggy storehouse 10, second pressure release pipeline 8 intercommunication pressure release house steward 7 and sack powder collector 9, third pressure release pipeline 5 intercommunication pressure release house steward 7 and mill outlet pipe, 3 urgent pressure release pipeline 2 intercommunication jetting jar 1 and mill outlet pipe 3, valve room release pipeline 4 intercommunication dress powder pipeline 6 and mill outlet pipe 3, first pressure release pipeline 11 is connected respectively to purge air source pipeline 12, second pressure release pipeline 8, pressure release house steward 7 is equipped with pressure detection component, pressure release house steward 7, first pressure release pipeline 11, second pressure release pipeline 8, third pressure release pipeline 5, urgent pressure release pipeline 2, valve room release pipeline 4, purge air source pipeline 12 all are equipped with the control valve group. Wherein, the valve-to-valve diffusing pipeline 4 is not connected with the pressure release pipeline so as to reduce the influence of pressure release on the blowing tank weighing system.
In the invention, the inter-valve diffusing pipeline 4 is connected between the powder loading pipeline 6 and the mill outlet pipeline 3, and after powder filling and canning are finished, the control valve group of the inter-valve diffusing pipeline 4 is automatically opened, so that under the normal working condition of the blowing tank, if the control valve group of the powder loading pipeline 6 is not tightly sealed and leaks air, the abrupt change of the weight of the blowing tank is easily caused, and the blowing precision is influenced. At the moment, due to the existence of the inter-valve diffusing pipeline, leakage gas can be timely discharged to the outlet pipeline 3 of the mill, and the influence on the blowing precision is avoided.
According to the invention, the number of the blowing tanks 1 is at least two, the blowing tanks 1 are arranged in parallel, each blowing tank 1 corresponds to a group of pressure relief pipelines, and the pressure relief pipelines of each group are not connected with each other, so that the weighing of other blowing tanks is prevented from being influenced in the pressure relief process of one blowing tank.
In this embodiment, the pressure relief manifold 7 includes a primary pressure relief pipe and a secondary pressure relief pipe that are arranged in parallel. The primary pressure relief pipeline and the secondary pressure relief pipeline adopt different pipe diameters.
In this embodiment, the control valve groups of the pressure relief main pipe 7, the first pressure relief pipeline 11, the second pressure relief pipeline 8, the third pressure relief pipeline 5, the emergency pressure relief pipeline 2 and the inter-valve relief pipeline 4 all adopt wear-resistant pneumatic valves.
In this embodiment, the outer walls of the pressure relief header pipe 7, the first pressure relief pipeline 11, the second pressure relief pipeline 8, the third pressure relief pipeline 5 and the emergency pressure relief pipeline 2 are covered with soaking layers.
In this embodiment, the purge gas source pipeline 12 is connected to an inert gas source, the inert gas is nitrogen, and a pneumatic valve is used for a control valve group of the purge gas source pipeline 12.
The working method of the blowing tank pressure relief device of the intelligent blowing system of the blast furnace comprises the following steps: according to the pressure value of the pulverized coal bin and the running condition of a cloth bag at the top of the bin, the first pressure relief pipeline or the second pressure relief pipeline is used as a pressure relief channel, the gas in the blowing tank is discharged to a cloth bag powder collector or the pulverized coal bin through the pressure relief channel, the pressure value of the pulverized coal bin, a pressure relief main pipe and the blowing tank is detected in real time in the gas discharging process, and the pressure relief channel is adjusted and optimized in real time according to the pressure value;
in the working method, when a cloth bag at the top of a bin runs and the pressure of a pulverized coal bin reaches a first set value, a control valve group of a first pressure relief pipeline is opened, a control valve group of a second pressure relief pipeline, a third pressure relief pipeline, an inter-valve relief pipeline and an emergency pressure relief pipeline is closed, and the first pressure relief pipeline is used as a pressure relief channel; when the cloth bag at the top of the bin does not run or the pressure of the pulverized coal bin does not reach a first set value, a control valve group of the second pressure relief pipeline is opened, the control valve groups of the first pressure relief pipeline, the third pressure relief pipeline, the inter-valve relief pipeline and the emergency pressure relief pipeline are closed, and the second pressure relief pipeline is used as a pressure relief channel.
In the working method, when a first pressure relief pipeline is used as a pressure relief channel, the pressure values of a coal dust bin and a pressure relief main pipe are detected in real time, when the pressure value of the coal dust bin is obviously reduced and the pressure value of the pressure relief main pipe is obviously increased, the pressure relief channel is judged to have a blocking trend, at the moment, a control valve group of a third pressure relief pipeline is opened, the third pressure relief pipeline and the first pressure relief pipeline are used as the pressure relief channel together, and auxiliary emergency pressure relief is carried out on the pressure relief channel through the third pressure relief pipeline;
when the second pressure relief pipeline is used as a pressure relief channel, the pressure value of the pressure relief main pipe is real-time, when the pressure value of the pressure relief main pipe reaches a second set value, the pressure relief pipeline is judged to have a blocking trend, at the moment, a control valve group of a third pressure relief pipeline is opened, the third pressure relief pipeline and the second pressure relief pipeline are used as pressure relief channels together, and auxiliary emergency pressure relief is carried out on the pressure relief channels through the third pressure relief pipeline;
in the auxiliary emergency pressure relief process of the third pressure relief pipeline, the pressure values of the pressure relief main pipe and the blowing tank are detected in real time, and if the pressure value of the pressure relief main pipe or the pressure value of the blowing tank does not drop to a third set value in set time, a control valve group of the emergency pressure relief pipeline is opened, and the emergency pressure relief is carried out on the pressure relief channel through the emergency pressure relief pipeline.
After the auxiliary emergency pressure relief is finished, the pressure relief pipeline is purged through a purging air source pipeline.
In the working method of the invention, when the pressure relief pipeline is purged, the control valve groups of the first pressure relief pipeline, the second pressure relief pipeline and the third pressure relief pipeline are closed, the control valve groups of the pressure relief main pipeline, the emergency pressure relief pipeline and the purging air source pipeline are opened, the purging air source pipeline is used for purging the pressure relief main pipeline to clear the blockage, the pressure value of the pressure relief main pipeline is detected to judge the blockage clearing condition of the pressure relief main pipeline, after the blockage clearing of the pressure relief main pipeline is finished, the control valve groups of the emergency pressure relief pipeline are closed, and the control valve groups of the first pressure relief pipeline, the second pressure relief pipeline and the third pressure relief pipeline are sequentially opened to purge the first pressure relief pipeline, the second pressure relief pipeline and the third pressure relief pipeline respectively.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (10)
1. The utility model provides a blast furnace intelligence jetting system jetting jar pressure relief device, includes coal pulverizer, sack receipts powder ware, buggy storehouse, jetting jar, pressure release pipeline, valve between diffuse pipeline, sweep air source pipeline, and the coal pulverizer passes through mill outlet pipe and connects the sack and receive the powder ware, and the buggy storehouse is received to the sack, and buggy storehouse passes through dress powder pipeline connection jetting jar, and buggy storehouse sets up storehouse top sack, pressure detection element, its characterized in that: the pressure relief pipeline comprises a pressure relief main pipe, a first pressure relief pipeline, a second pressure relief pipeline, a third pressure relief pipeline and an emergency pressure relief pipeline, wherein the pressure relief main pipe is connected with the blowing tank, the first pressure relief pipeline is communicated with the pressure relief main pipe and the pulverized coal bin, the second pressure relief pipeline is communicated with the pressure relief main pipe and the cloth bag powder collector, the third pressure relief pipeline is communicated with the pressure relief main pipe and the outlet pipeline of the mill, the emergency pressure relief pipeline is communicated with the blowing tank and the outlet pipeline of the mill, the valve is communicated with the powder filling pipeline and the outlet pipeline of the mill, the purging air source pipeline is respectively connected with the first pressure relief pipeline and the second pressure relief pipeline, the pressure relief main pipe is provided with a pressure detection element, and the pressure relief main pipe, the first pressure relief pipeline, the second pressure relief pipeline, the third pressure relief pipeline, the emergency pressure relief pipeline, the valve is provided with a control valve group, and the purging air source pipeline are all provided with a control valve group.
2. The blast furnace intelligent injection system injection tank pressure relief device according to claim 1, wherein: the number of the blowing tanks is at least two, all the blowing tanks are arranged in parallel, each blowing tank corresponds to a group of pressure relief pipelines, and the pressure relief pipelines of each group are not connected with each other.
3. The blast furnace intelligent injection system injection tank pressure relief device according to claim 1, wherein: the pressure relief main pipe comprises a first-stage pressure relief pipeline and a second-stage pressure relief pipeline which are arranged in parallel, and the first-stage pressure relief pipeline and the second-stage pressure relief pipeline adopt different pipe diameters.
4. The blast furnace intelligent injection system injection tank pressure relief device according to claim 1, wherein: and the control valve groups of the pressure relief main pipe, the first pressure relief pipeline, the second pressure relief pipeline, the third pressure relief pipeline, the emergency pressure relief pipeline and the inter-valve relief pipeline all adopt wear-resistant pneumatic valves.
5. The blast furnace intelligent injection system injection tank pressure relief device according to claim 1, wherein: the outer walls of the pressure relief main pipe, the first pressure relief pipeline, the second pressure relief pipeline, the third pressure relief pipeline and the emergency pressure relief pipeline are all coated with heat insulation layers.
6. The blast furnace intelligent injection system injection tank pressure relief device according to claim 1, wherein: the purging air source pipeline is connected with an inert gas source, and a control valve group of the purging air source pipeline adopts a pneumatic valve.
7. The working method of the blowing tank pressure relief device of the intelligent blowing system of the blast furnace according to claim 1, which is characterized by comprising the following steps: according to the pressure value of the pulverized coal bin and the running condition of a cloth bag at the top of the bin, the first pressure relief pipeline or the second pressure relief pipeline is used as a pressure relief channel, gas in the blowing tank is discharged to the cloth bag powder collector or the pulverized coal bin through the pressure relief channel, the pressure value of the pulverized coal bin, the pressure relief main pipe and the blowing tank is detected in real time in the gas discharging process, and the pressure relief channel is adjusted and optimized in real time according to the pressure value.
8. The working method of the blowing tank pressure relief device of the intelligent blowing system of the blast furnace, which is characterized in that: when the cloth bag at the top of the bin runs and the pressure of the pulverized coal bin reaches a first set value, a control valve group of a first pressure relief pipeline is opened, a control valve group of a second pressure relief pipeline, a third pressure relief pipeline, an inter-valve relief pipeline and an emergency pressure relief pipeline is closed, and the first pressure relief pipeline is used as a pressure relief channel; when the cloth bag at the top of the bin does not run or the pressure of the pulverized coal bin does not reach a first set value, a control valve group of the second pressure relief pipeline is opened, the control valve groups of the first pressure relief pipeline, the third pressure relief pipeline, the inter-valve relief pipeline and the emergency pressure relief pipeline are closed, and the second pressure relief pipeline is used as a pressure relief channel.
9. The working method of the blowing tank pressure relief device of the intelligent blowing system of the blast furnace of claim 8 is characterized by comprising the following steps: when the first pressure relief pipeline is used as a pressure relief channel, the pressure values of the pulverized coal bin and the pressure relief main pipe are detected in real time, when the pressure value of the pulverized coal bin is obviously reduced and the pressure value of the pressure relief main pipe is obviously increased, the pressure relief channel is judged to have a blocking trend, a control valve group of a third pressure relief pipeline is started at the moment, the third pressure relief pipeline and the first pressure relief pipeline are used as pressure relief channels together, and auxiliary emergency pressure relief is carried out on the pressure relief channels through the third pressure relief pipeline;
when the second pressure relief pipeline is used as a pressure relief channel, the pressure value of the pressure relief main pipe is real-time, when the pressure value of the pressure relief main pipe reaches a second set value, the pressure relief pipeline is judged to have a blocking trend, at the moment, a control valve group of a third pressure relief pipeline is opened, the third pressure relief pipeline and the second pressure relief pipeline are used as pressure relief channels together, and auxiliary emergency pressure relief is carried out on the pressure relief channels through the third pressure relief pipeline;
in the auxiliary emergency pressure relief process of the third pressure relief pipeline, detecting the pressure values of the pressure relief main pipe and the blowing tank in real time, and opening a control valve group of the emergency pressure relief pipeline to emergently relieve pressure of the pressure relief channel through the emergency pressure relief pipeline if the pressure value of the pressure relief main pipe or the pressure value of the blowing tank does not drop to a third set value within a set time;
after the auxiliary emergency pressure relief is finished, the pressure relief pipeline is purged through a purging air source pipeline.
10. The working method of the blowing tank pressure relief device of the intelligent blowing system of the blast furnace according to claim 9 is characterized in that: when purging the pressure release pipeline, close the control valves of first pressure release pipeline, second pressure release pipeline, third pressure release pipeline, open pressure release house steward, urgent pressure release pipeline, sweep clear stifled to pressure release house steward through sweeping the air supply pipeline, judge the clear stifled condition of pressure release house steward through the pressure value that detects pressure release house steward, after the clear stifled of pressure release house steward finishes, close urgent pressure release pipeline's control valves, open the control valves of first pressure release pipeline, second pressure release pipeline, third pressure release pipeline in proper order, blow clear stifled to first pressure release pipeline, second pressure release pipeline, third pressure release pipeline respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310551550.1A CN116497165A (en) | 2023-05-16 | 2023-05-16 | Blowing tank pressure relief device of intelligent blowing system of blast furnace and working method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310551550.1A CN116497165A (en) | 2023-05-16 | 2023-05-16 | Blowing tank pressure relief device of intelligent blowing system of blast furnace and working method thereof |
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| CN116497165A true CN116497165A (en) | 2023-07-28 |
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| CN202310551550.1A Pending CN116497165A (en) | 2023-05-16 | 2023-05-16 | Blowing tank pressure relief device of intelligent blowing system of blast furnace and working method thereof |
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