CN209759495U - Feed opening device of converter vaporization cooling flue - Google Patents
Feed opening device of converter vaporization cooling flue Download PDFInfo
- Publication number
- CN209759495U CN209759495U CN201822199574.2U CN201822199574U CN209759495U CN 209759495 U CN209759495 U CN 209759495U CN 201822199574 U CN201822199574 U CN 201822199574U CN 209759495 U CN209759495 U CN 209759495U
- Authority
- CN
- China
- Prior art keywords
- feed opening
- barrel
- abrasion
- cooling flue
- sealing
- 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.)
- Withdrawn - After Issue
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 34
- 238000009834 vaporization Methods 0.000 title claims abstract description 23
- 230000008016 vaporization Effects 0.000 title claims abstract description 23
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000007789 sealing Methods 0.000 claims abstract description 41
- 238000005299 abrasion Methods 0.000 claims abstract description 33
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000033764 rhythmic process Effects 0.000 abstract description 4
- 239000003034 coal gas Substances 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The utility model discloses a converter vaporization cooling flue's feed opening device, include: the anti-abrasion device comprises a feed opening and an anti-abrasion barrel, wherein a first flange is arranged at the top of the anti-abrasion barrel, a second flange is arranged at the top of the feed opening, and the anti-abrasion barrel is inserted into the inner barrel of the feed opening and then is connected with the inner barrel of the feed opening through the first flange and the second flange, so that the anti-abrasion barrel is fixed in the inner barrel of the feed opening; and a nitrogen sealing device is fixedly arranged at the top of the anti-abrasion cylinder. The service life of the feed opening device can reach more than two years, the quality of a converter vaporization cooling flue at the mouth of the converter is greatly improved, and the production rhythm is accelerated. When the anti-abrasion barrel is replaced, the anti-abrasion barrel is only replaced without replacing a feed opening, so that the replacement is very convenient, and the production cost is greatly saved.
Description
Technical Field
The utility model relates to a converter vaporization cooling flue especially relates to a converter vaporization cooling flue's feed opening device.
Background
The converter waste heat boiler is mainly used for recovering coal gas, high-temperature flue gas and smoke dust during oxygen blowing and steel making of a converter in a steel enterprise. The converter waste heat boiler usually adopts an evaporation cooling flue structure, the evaporation cooling flue of the converter is directly linked with the production process of the converter, and the evaporation cooling flue of the converter is used as a part of the converter steelmaking process to directly participate in steelmaking production.
The feed opening device in the converter vaporization cooling flue is arranged on the converter vaporization cooling flue positioned at the converter mouth, and the feed opening device is close to the converter mouth, so that the feed opening in the feed opening device is influenced by heat radiation of high-temperature molten steel in smelting at the temperature of more than 1200 ℃, and splashed objects such as slag liquid and the like are attached to the feed opening, so that a high-temperature triangular zone is formed. Particularly, in the AOD converter, the temperature of the converter mouth of the converter reaches more than 1700 ℃, and the influence on the feed opening is larger. In addition, in the process that the bulk raw materials enter the converter through the feed opening, the feed opening is always subjected to friction and impact of the bulk raw materials, so the use condition of the feed opening device is very bad. Especially, when the bulk raw material is stainless steel, the working condition of the feed opening device is much worse because the stainless steel is much harder than common carbon steel. Under the multiple actions of roasting, adhering and rubbing, the common feed opening device in the market generally begins to deform, crack, leak water and the like at the feed opening in the feed opening device for about six months, so that the production rhythm is seriously influenced, and great potential safety hazards exist. In addition, the replacement and maintenance time of each part of the feed opening is about 10 hours, and the labor intensity of replacement and maintenance is high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that needs to solve is: the feed opening device of the converter vaporization cooling flue has long service life and is convenient to maintain and replace, and the service life of the feed opening device can reach more than two years.
In order to solve the above problem, the utility model adopts the following technical scheme: the feed opening device of the converter vaporization cooling flue comprises: the feed opening, the structure of feed opening do: the outer cylinder body is sleeved on the inner cylinder body, and a gap between the inner cylinder body and the outer cylinder body forms a cavity; an upper sealing plate for sealing the top of the cavity is arranged at the top of the outer cylinder body and the inner cylinder body, and a lower sealing plate for sealing the bottom of the cavity is arranged at the bottom of the outer cylinder body and the inner cylinder body; the outer cylinder body is also provided with a water inlet pipe and a water outlet pipe which are communicated with the cavity; the anti-abrasion barrel is inserted into the inner barrel of the feed opening and then connected through the first flange and the second flange, so that the anti-abrasion barrel is fixed in the inner barrel; the top of the anti-abrasion cylinder is also fixedly provided with a nitrogen sealing device for preventing gas such as coal gas and the like from leaking outwards through the anti-abrasion cylinder.
Further, in the feed opening device of the converter vaporization cooling flue, the anti-abrasion cylinder is made of Q345R steel, and the wall thickness of the anti-abrasion cylinder is 38-45 mm.
Further, in the feed opening device of the converter vaporization cooling flue, the wall thickness of the anti-abrasion cylinder body is 40 mm.
Further, the feed opening device of the converter vaporization cooling flue, wherein the structure of the nitrogen sealing device comprises: the cylindrical inner surrounding plate, the cylindrical outer surrounding plate, the upper flange and the lower flange are encircled to form an annular sealing cavity, and the annular sealing cavity is connected with the first flange through the lower flange; at least one nitrogen inlet pipe is arranged on the cylindrical peripheral plate, the gas outlet of each nitrogen inlet pipe is communicated with the annular sealing cavity, a plurality of small hole channels are arranged on the cylindrical inner enclosing plate along the circumferential direction, and nitrogen sprayed from each small hole channel forms a nitrogen sealing layer for preventing gas such as coal gas and the like from leaking outwards through the anti-abrasion cylinder.
Further, in the feed opening device of the converter vaporization cooling flue, the inclination angle alpha of the axis of each small hole channel relative to the sealing surface of the upper flange is 25-50 degrees.
Further, in the feed opening device of the converter vaporization cooling flue, the inclination angle α of the axis of each small hole channel relative to the sealing surface of the upper flange is 30 °.
Further, in the feed opening device of the converter vaporization cooling flue, the water inlet pipe is connected with the water outlet of the deaerator through a connecting pipeline.
The utility model has the advantages that: the defects that the feed opening is deformed, cracked, leaks and the like in about six months are effectively overcome, the service life of the feed opening device can still reach more than two years even if the feed opening device is used in the working condition that the bulk raw material is stainless steel, the quality of a converter vaporization cooling flue at the converter opening of the converter is greatly improved, and the production rhythm is accelerated. When the anti-abrasion barrel is replaced, the anti-abrasion barrel is only replaced without replacing a feed opening, so that the replacement is very convenient, and the production cost is greatly saved.
Drawings
Fig. 1 is a schematic structural diagram of a feed opening device of a converter vaporization cooling flue of the present invention.
Fig. 2 is a schematic view of the structure of the feed opening in fig. 1.
Fig. 3 is a schematic structural view of the wear-proof cylinder in fig. 1.
FIG. 4 is a schematic view of the nitrogen sealing apparatus of FIG. 1.
Fig. 5 is a partially enlarged structural view of a portion a in fig. 4.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and preferred embodiments.
The feed opening devices 2 are generally symmetrically provided on both sides of the converter vaporization cooling flue 1 at the converter mouth as the inlet of the bulk raw material used in the converter, that is, two identical feed opening devices 2 are symmetrically provided on both sides of the converter vaporization cooling flue 1. The present embodiment discusses a specific structure of the single feed opening device 2.
As shown in fig. 1 and fig. 2, a feed opening device 2 of a converter vaporization cooling flue of the present invention includes: feed opening 3 and abrasionproof barrel 4, feed opening 3's structure be: the outer cylinder 31 is sleeved on the inner cylinder 32, and a gap between the inner cylinder 32 and the outer cylinder 31 forms a cavity. An upper sealing plate 33 for sealing the top of the cavity is arranged at the top of the outer cylinder 31 and the inner cylinder 32, and a lower sealing plate 34 for sealing the bottom of the cavity is arranged at the bottom of the outer cylinder 31 and the inner cylinder 32. The outer cylinder 31 is also provided with a water inlet pipe 35 and a water outlet pipe, and the water inlet pipe 35 and the water outlet pipe are both communicated with the cavity, so that the cavity forms a water circulation channel. The water source in the inlet pipe 35 in this embodiment is provided by a deaerator, and thus the inlet pipe 35 is connected to the outlet of the deaerator through a connecting pipe.
As shown in fig. 1 and 3, a first flange 41 is arranged at the top of the anti-abrasion cylinder 4, a second flange 30 is arranged at the top of the feed opening 3, the anti-abrasion cylinder 4 is connected with the inner cylinder 32 of the feed opening 3 through the first flange 41 and the second flange 30 after being inserted into the inner cylinder 32, so that the anti-abrasion cylinder 4 is fixed in the inner cylinder 32 through a detachable connection structure, the detachable connection structure is arranged between the anti-abrasion cylinder 4 and the feed opening 3, the subsequent replacement of the anti-abrasion cylinder 4 is convenient, and the anti-abrasion cylinder 4 can be taken out from the inner cylinder 32 of the feed opening 3 only by detaching the connection bolt between the first flange 41 and the second flange 30.
The anti-abrasion cylinder 4 in the embodiment is made of Q345R steel, and the wall thickness of the anti-abrasion cylinder 4 is 38-45 mm. The most preferred value for the wall thickness of the anti-wear cylinder 4 is 40 mm, taking into account the processing costs and the multiple factors of resistance to scorching, adhesion and rubbing.
In order to prevent gas such as coal gas in the evaporative cooling flue 1 from leaking to the external environment through the wear-resistant cylinder 1, as shown in fig. 1 and 4, a nitrogen sealing device 5 is further fixedly arranged on the top of the wear-resistant cylinder 4. The structure of the nitrogen sealing device 5 comprises: the nitrogen sealing device comprises a cylindrical inside enclosing plate 51, a cylindrical peripheral plate 52, an upper flange 53 and a lower flange 54, wherein the cylindrical inside enclosing plate 51, the cylindrical peripheral plate 52, the upper flange 53 and the lower flange 54 surround to form an annular sealing cavity 50, and the annular sealing cavity 50 is connected with the first flange 41 through the lower flange 54, so that the nitrogen sealing device 5 is sealed and fixed on the top of the wear-resistant cylinder 4. At least one nitrogen inlet pipe 6 is arranged on the cylindrical peripheral plate 52, the air outlet of each nitrogen inlet pipe 6 is communicated with the annular sealing cavity 50, a plurality of small hole channels 7 are arranged on the cylindrical inner enclosing plate 51 along the circumferential direction, and nitrogen sprayed from each small hole channel 7 forms a nitrogen sealing layer for preventing gas such as coal gas and the like from leaking outwards through the anti-abrasion cylinder 4.
As shown in fig. 5, the inclination angle α of the axis of each orifice passage 7 with respect to the sealing surface of the upper flange 53 is 25 ° to 50 °. The nitrogen sealing layer formed by spraying from each inclined small hole channel 7 forms inward pressing force to gas such as coal gas, thereby better preventing the gas such as coal gas in the evaporative cooling flue 1 from leaking to the external environment through the anti-abrasion cylinder 4. The optimal inclination scheme is that the inclination angle alpha of the axis line of each small hole channel 7 relative to the sealing surface of the upper flange 53 is 30 degrees.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any modifications or equivalent changes made in accordance with the technical spirit of the present invention are also within the scope of the present invention.
The utility model has the advantages that: the defects that the feed opening is deformed, cracked, leaks and the like within about 3 months are effectively overcome, the service life of the feed opening 3 is greatly prolonged, the service life of the feed opening device 2 can still reach more than two years even if the feed opening device is used in the working condition that the bulk raw material is stainless steel raw material, the quality of the converter vaporization cooling flue 1 at the converter opening of the converter is greatly improved, and the production rhythm is accelerated. When the anti-abrasion barrel body 4 is replaced, the feed opening 3 does not need to be replaced, the replacement is very convenient, and the production cost is greatly saved.
Claims (7)
1. Converter vaporization cooling flue's feed opening device includes: the feed opening, the structure of feed opening do: the outer cylinder body is sleeved on the inner cylinder body, and a gap between the inner cylinder body and the outer cylinder body forms a cavity; an upper sealing plate for sealing the top of the cavity is arranged at the top of the outer cylinder body and the inner cylinder body, and a lower sealing plate for sealing the bottom of the cavity is arranged at the bottom of the outer cylinder body and the inner cylinder body; the outer cylinder body is also provided with a water inlet pipe and a water outlet pipe which are communicated with the cavity; the method is characterized in that: the anti-abrasion barrel is inserted into the inner barrel of the feed opening and then connected through the first flange and the second flange, so that the anti-abrasion barrel is fixed in the inner barrel; and a nitrogen sealing device is fixedly arranged at the top of the anti-abrasion cylinder.
2. The feed opening device of the evaporative cooling flue of the converter according to claim 1, wherein: the abrasionproof barrel be the abrasionproof barrel of making by Q345R steel, the wall thickness of abrasionproof barrel is 38 ~ 45 mm.
3. The feed opening device of the evaporative cooling flue of the converter according to claim 2, wherein: the wall thickness of the anti-abrasion barrel body is 40 mm.
4. The feed opening device of the evaporative cooling flue of the converter according to claim 1 or 2, characterized in that: the structure of the nitrogen sealing device comprises: the cylindrical inner surrounding plate, the cylindrical outer surrounding plate, the upper flange and the lower flange are encircled to form an annular sealing cavity, and the annular sealing cavity is connected with the first flange through the lower flange; at least one nitrogen inlet pipe is arranged on the cylindrical peripheral plate, the gas outlet of each nitrogen inlet pipe is communicated with the annular sealing cavity, a plurality of small hole channels are arranged on the cylindrical inner enclosing plate along the circumferential direction, and nitrogen sprayed from each small hole channel forms a nitrogen sealing layer.
5. The feed opening device of the evaporative cooling flue of the converter as claimed in claim 4, wherein: the inclination angle alpha of the axial lead of each small hole channel relative to the sealing surface of the upper flange is 25-50 degrees.
6. The feed opening device of the evaporative cooling flue of the converter as claimed in claim 5, wherein: the inclination angle alpha of the axial lead of each small hole channel relative to the sealing surface of the upper flange is 30 degrees.
7. The feed opening device of the evaporative cooling flue of the converter according to claim 1 or 2, characterized in that: the water inlet pipe is connected with the water outlet of the deaerator through a connecting pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822199574.2U CN209759495U (en) | 2018-12-26 | 2018-12-26 | Feed opening device of converter vaporization cooling flue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822199574.2U CN209759495U (en) | 2018-12-26 | 2018-12-26 | Feed opening device of converter vaporization cooling flue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209759495U true CN209759495U (en) | 2019-12-10 |
Family
ID=68747416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822199574.2U Withdrawn - After Issue CN209759495U (en) | 2018-12-26 | 2018-12-26 | Feed opening device of converter vaporization cooling flue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209759495U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109576438A (en) * | 2018-12-26 | 2019-04-05 | 苏州海陆重工股份有限公司 | The feed opening device for feed of converter evaporation cooling air flue |
| CN115652021A (en) * | 2022-11-10 | 2023-01-31 | 九江萍钢钢铁有限公司 | Converter oxygen muzzle nitrogen seal device |
-
2018
- 2018-12-26 CN CN201822199574.2U patent/CN209759495U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109576438A (en) * | 2018-12-26 | 2019-04-05 | 苏州海陆重工股份有限公司 | The feed opening device for feed of converter evaporation cooling air flue |
| CN109576438B (en) * | 2018-12-26 | 2024-03-19 | 苏州海陆重工股份有限公司 | Feed opening device of converter vaporization cooling flue |
| CN115652021A (en) * | 2022-11-10 | 2023-01-31 | 九江萍钢钢铁有限公司 | Converter oxygen muzzle nitrogen seal device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20191210 Effective date of abandoning: 20240319 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20191210 Effective date of abandoning: 20240319 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |