CN215209522U - Real-time monitoring device for blockage of blast furnace coal gun - Google Patents
Real-time monitoring device for blockage of blast furnace coal gun Download PDFInfo
- Publication number
- CN215209522U CN215209522U CN202121671732.5U CN202121671732U CN215209522U CN 215209522 U CN215209522 U CN 215209522U CN 202121671732 U CN202121671732 U CN 202121671732U CN 215209522 U CN215209522 U CN 215209522U
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- Prior art keywords
- pipe
- coal
- jetting
- distributor
- blast furnace
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- 239000003245 coal Substances 0.000 title claims abstract description 53
- 238000012806 monitoring device Methods 0.000 title claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000012544 monitoring process Methods 0.000 claims abstract description 8
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 7
- 238000002347 injection Methods 0.000 claims description 18
- 239000007924 injection Substances 0.000 claims description 18
- 229910052757 nitrogen Inorganic materials 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 6
- 238000007664 blowing Methods 0.000 abstract description 5
- 239000000446 fuel Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
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Abstract
The utility model relates to a blast furnace coal rifle blocks up real-time supervision device has the distributor that connects the buggy house steward and let in the buggy, and distributor circumference all is equipped with the jetting pipe, jetting pipe one end is connected with the distributor, and the jetting pipe other end is connected with the coal rifle that stretches into in the blast furnace, is equipped with the check valve on the jetting pipe of nearly distributor side, connects gradually on the jetting pipe behind the check valve to fill nitrogen gas pipe, the thermal resistance of measuring the intraductal wind gap temperature of jetting into nitrogen gas in the jetting pipe, and thermal resistance line connection carries out long-range real time monitoring to the intraductal wind gap temperature of jetting. The utility model discloses a thermal resistance measures the intraductal wind gap temperature of jetting behind the distributor to this is to coal rifle temperature real time monitoring, and judges whether there is the jam according to the temperature range coal rifle, and lets in nitrogen gas when taking place to block up and sweep the mediation to the coal rifle automatically, thereby ensures the steady operation of coal rifle, avoids causing the untimely blowing out of production of blast furnace often because of the supply of coal rifle jam to lead to the fact pulverized coal fuel.
Description
Technical Field
The utility model belongs to the technical field of blast furnace ironmaking technique and specifically relates to a real-time monitoring device is blockked up to blast furnace coal rifle.
Background
In a blast furnace iron-making system, due to the continuity of production, pulverized coal injected by a blast furnace opening is not discontinuous, so that a coal gun cannot be blocked, otherwise, pulverized coal fuel cannot be supplied to the blast furnace in time. Tuyere temperatures in normal injection are typically in the range of 40 to more than 50 degrees, which if lower than the above temperature means that the coal lance may be clogged. At present, a coal gun is generally checked manually, if the coal gun is blocked, a blowoff valve needs to be opened manually for manual back purging, and sometimes, a plurality of uncertain factors are increased due to the fact that the condition of the coal gun cannot be monitored in real time during operation, so that the coal gun is blocked, and blowing pipes are burnt down and the blast furnace is shut down.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: in order to overcome the defects in the prior art, the utility model provides a real-time monitoring device for the blockage of a blast furnace coal gun.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a blast furnace coal rifle blocks up real-time supervision device, has the distributor that connects the buggy house steward and lets in the buggy, and distributor circumference all is equipped with the jetting pipe, jetting pipe one end is connected with the distributor, and the jetting pipe other end is connected with the coal rifle that stretches into in the blast furnace, is equipped with the check valve on the jetting pipe of nearly distributor side, connects gradually on the jetting pipe behind the check valve to fill nitrogen gas pipe, the thermal resistance of measuring the intraductal wind gap temperature of jetting into the jetting, and the thermal resistance circuit connection carries out long-range real time monitoring to PLC to the intraductal wind gap temperature of jetting.
The coal gun is provided with a ball valve for controlling the coal powder injection so as to facilitate the coal powder injection quantity.
In order to adjust the nitrogen amount conveniently, a nitrogen valve is arranged on the nitrogen pipe.
The utility model has the advantages that: the utility model discloses a thermal resistance measures the intraductal wind gap temperature of jetting behind the distributor to this is to coal rifle temperature real time monitoring, and judges whether there is the jam according to the temperature range coal rifle, and lets in nitrogen gas when taking place to block up and sweep the mediation to the coal rifle automatically, thereby ensures the steady operation of coal rifle, avoids causing the untimely blowing out of production of blast furnace often because of the supply of coal rifle jam to lead to the fact pulverized coal fuel.
Drawings
The present invention will be further described with reference to the accompanying drawings and embodiments.
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. the system comprises a distributor, 2 parts of an injection pipe, 3 parts of a coal gun, 4 parts of a check valve, 5 parts of a nitrogen pipe, 6 parts of a thermal resistor, 7 parts of a ball valve, 8 parts of a nitrogen valve and 9 parts of a blast furnace.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
The device for monitoring blockage of the coal gun of the blast furnace in real time as shown in figure 1 comprises a distributor 1 connected with a coal powder main pipe and filled with coal powder, wherein injection pipes 2 are arranged on the periphery of the distributor 1, one end of each injection pipe 2 is connected with the distributor 1, the other end of each injection pipe 2 is connected with a coal gun 3 extending into a blast furnace 9, and a ball valve 7 for controlling coal powder injection is arranged on each coal gun 3.
The injection pipe 2 near the distributor 1 is provided with a check valve 4, the injection pipe 2 behind the check valve 4 is sequentially connected with a nitrogen pipe 5 for filling nitrogen into the injection pipe 2 and a thermal resistor 6 for measuring the temperature of an air port in the injection pipe 2, the nitrogen pipe 5 is provided with a nitrogen valve 8, and the thermal resistor 6 is connected to a PLC through a circuit for remotely monitoring the temperature of the air port in the injection pipe 2 in real time.
In the using process, the temperature of the coal gun 3 (namely the temperature of an air port in the rear injection pipe 2 of the distributor 1) is measured by the thermal resistor 6 and enters the PLC for remote real-time monitoring. The measured tuyere temperature is generally between 40 ℃ and 50 ℃ when the coal gun 3 is normally blown, when the measured temperature is between 20 ℃ and 30 ℃, the blockage situation exists in the coal gun 3 is shown, the PLC program automatically opens the nitrogen valve 8, nitrogen is introduced into the nitrogen pipe 5 to blow the coal gun 3 for 2 seconds, the check valve 4 is closed, the coal gun 3 is blown for about 15 seconds, then the check valve 4 is opened, the nitrogen valve 8 is closed, blowing is finished, whether the coal gun 3 is blocked or not can be monitored in real time during operation, the stable operation of the coal gun 3 is guaranteed by automatic blowing and dredging, and the problem that the pulverized coal fuel is not supplied in time due to blockage of the coal gun 3 to cause blowing-down and production stop of the blast furnace is avoided.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (3)
1. The utility model provides a blast furnace coal rifle blocks up real-time supervision device, has distributor (1) that connects the buggy house steward and lets in the buggy, and distributor (1) circumference all is equipped with injection pipe (2), injection pipe (2) one end is connected with distributor (1), and injection pipe (2) other end is connected with coal rifle (3) that stretch into in blast furnace (9), characterized by: be equipped with check valve (4) on jetting pipe (2) of nearly distributor (1) side, connect gradually on jetting pipe (2) behind check valve (4) and fill into nitrogen gas pipe (5) of nitrogen gas, measure thermal resistance (6) of wind gap temperature in jetting pipe (2) in to jetting pipe (2), thermal resistance (6) line connection carries out long-range real time monitoring to wind gap temperature in jetting pipe (2).
2. The real-time monitoring device for the blockage of the blast furnace coal lance of claim 1 is characterized in that: the coal gun (3) is provided with a ball valve (7) for controlling the injection of the coal powder.
3. The real-time monitoring device for the blockage of the blast furnace coal lance of claim 1 is characterized in that: and a nitrogen valve (8) is arranged on the nitrogen pipe (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121671732.5U CN215209522U (en) | 2021-07-22 | 2021-07-22 | Real-time monitoring device for blockage of blast furnace coal gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121671732.5U CN215209522U (en) | 2021-07-22 | 2021-07-22 | Real-time monitoring device for blockage of blast furnace coal gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215209522U true CN215209522U (en) | 2021-12-17 |
Family
ID=79428234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121671732.5U Active CN215209522U (en) | 2021-07-22 | 2021-07-22 | Real-time monitoring device for blockage of blast furnace coal gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215209522U (en) |
-
2021
- 2021-07-22 CN CN202121671732.5U patent/CN215209522U/en active Active
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