CN109576438A - The feed opening device for feed of converter evaporation cooling air flue - Google Patents
The feed opening device for feed of converter evaporation cooling air flue Download PDFInfo
- Publication number
- CN109576438A CN109576438A CN201811599240.2A CN201811599240A CN109576438A CN 109576438 A CN109576438 A CN 109576438A CN 201811599240 A CN201811599240 A CN 201811599240A CN 109576438 A CN109576438 A CN 109576438A
- Authority
- CN
- China
- Prior art keywords
- feed opening
- feed
- flange
- cooling air
- cylinder
- 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.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 33
- 238000001704 evaporation Methods 0.000 title claims abstract description 28
- 230000008020 evaporation Effects 0.000 title claims abstract description 28
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000011148 porous material Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 230000033764 rhythmic process Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 2
- 239000003034 coal gas Substances 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000002309 gasification Methods 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 238000009628 steelmaking Methods 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000008141 laxative Substances 0.000 description 1
- 230000002475 laxative effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/38—Removal of waste gases or dust
- C21C5/40—Offtakes or separating apparatus for converter waste gases or dust
-
- 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
- Y02P10/25—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention discloses a kind of feed opening device for feed of converter evaporation cooling air flue, it include: feed opening and anti-grinding cylinder, first flange is provided at the top of anti-grinding cylinder, second flange is provided at the top of feed opening, anti-grinding cylinder is connected after being inserted into the inner cylinder of feed opening by first flange with second flange, to which anti-grinding cylinder to be fixed in the inner cylinder of feed opening；Nitrogen seal device is further fixedly arranged at the top of anti-grinding cylinder.Feed opening device for feed service life can reach 2 years or more, substantially increase the quality of the converter evaporation cooling air flue at converter mouth, accelerate rhythm of production.Anti- grinding cylinder is only needed to change when replacement, no replacement is required feed opening is replaced very convenient and production cost is greatly saved.
Description
Technical field
The present invention relates to converter evaporation cooling air flue more particularly to a kind of feed opening device for feed of converter evaporation cooling air flue.
Background technique
Converter Residual Heat Boiler is mainly used for the recycling of coal gas, high-temperature flue gas and flue dust when the steel-making of iron and steel enterprise's Converter Oxigen Blowing.
Converter Residual Heat Boiler generallys use gasification cooling flue structure, and the production process of converter evaporation cooling air flue and converter directly connects
Lock, a part as converter steelmaking process directly participate in STEELMAKING PRODUCTION, it can be collected during converter smelting steel
High-temperature flue gas, and be cooled to, meet steel-making later period dedusting and the requirement of coal-gas recovering, while can also generate a large amount of
Steam can substantially reduce the cost of production and life for the needs for producing and living, and occupy highly importantly in steel mill
Position.
Feed opening device for feed in converter evaporation cooling air flue is mounted on the converter evaporation cooling air flue at converter mouth
On, since feed opening device for feed is close apart from converter mouth position, thus the feed opening in feed opening device for feed will not only be smelted
1200 DEG C of high temperature molten steel or more of heat radiation influences, and has the splashings such as slag liquid to be attached on feed opening, to form height
Warm triangle zone.Especially AOD converter, converter mouth temperature reach 1700 DEG C or more, and the influence to feed opening is bigger.In addition,
During bulk raw materials enter converter by feed opening, feed opening is constantly subjected to the friction and shock of bulk raw materials, or less
The applying working condition very severe of material mouth device.Especially when bulk raw materials are stainless steel, since stainless steel is than general carbon steel
Hard is more, thus the operating condition that feed opening device for feed faces is worse more.Currently on the market common feed opening device for feed scorch,
Attachment and friction multiple action under, the feed opening in general six months or so feed opening device for feed begin to occur deformation, cracking,
Phenomena such as leak, seriously affects rhythm of production, and there are major safety risks.In addition to this, the repair and replacement of each component of feed opening
Time needs nearly 10 hours, repair and replacement large labor intensity.
Summary of the invention
The technical issues of solving needed for of the invention is: providing the converter vaporization of a kind of long service life, convenient maintenance and replacement
The feed opening device for feed of cooling stack, the service life of the feed opening device for feed can reach 2 years or more.
To solve the above problems, the technical solution adopted by the present invention is that: the feed opening of the converter evaporation cooling air flue
Device, comprising: feed opening, the structure of the feed opening are as follows: outer barrel is sheathed on inner cylinder, and inner cylinder and outer barrel it
Between gap constitute cavity；Be provided at the top of outer barrel and inner cylinder by the closed upper sealing plate of cavity top, outer barrel with
Inner cylinder bottom is provided with the closed lower sealing plate of cavity bottom；It is additionally provided with water inlet pipe and outlet pipe on outer barrel, intakes
Pipe and outlet pipe are connected with cavity；Further include anti-grinding cylinder, first flange is provided at the top of anti-grinding cylinder, in feed opening
Top is provided with second flange, connected afterwards by first flange with second flange in the inner cylinder of anti-grinding cylinder insertion feed opening,
To which anti-grinding cylinder is fixed in inner cylinder；Being further fixedly arranged at the top of anti-grinding cylinder prevents the gases such as coal gas from passing through abrasionproof
The nitrogen seal device that cylinder leaks out.
Further, the feed opening device for feed of converter evaporation cooling air flue above-mentioned, wherein the anti-grinding cylinder is served as reasons
Anti- grinding cylinder made of Q345R steel, the wall thickness of anti-grinding cylinder are 38~45mm.
Further, the feed opening device for feed of converter evaporation cooling air flue above-mentioned, wherein the wall thickness of anti-grinding cylinder is 40
㎜。
Further, the feed opening device for feed of converter evaporation cooling air flue above-mentioned, wherein the structure of the nitrogen seal device
It include: coaming plate in tubular, tubular peripheral board, upper flange and lower flange, coaming plate, tubular peripheral board, upper flange and laxative remedy in tubular
Orchid is surrounded to form annular seal cavity, and annular seal cavity is connect by lower flange with first flange；It is set on tubular peripheral board
It is equipped at least one nitrogen inlet duct, the gas outlet of each nitrogen inlet duct is connected with annular seal cavity, the coaming plate in tubular
On along the circumferential direction offer several pore channels, the nitrogen that ejects from each pore channels, which is formed, stops the gases such as coal gas to pass through
The nitrogen-sealed layer that anti-grinding cylinder leaks out.
Further, the feed opening device for feed of converter evaporation cooling air flue above-mentioned, wherein the axial line phase of each pore channels
Inclination angle alpha to the sealing surface of upper flange is 25 °~50 °.
Further, the feed opening device for feed of converter evaporation cooling air flue above-mentioned, wherein the axial line phase of each pore channels
Inclination angle alpha to the sealing surface of upper flange is 30 °.
Further, the feed opening device for feed of converter evaporation cooling air flue above-mentioned, wherein water inlet pipe by connecting line with
The water outlet of oxygen-eliminating device is connected.
The beneficial effects of the present invention are: phenomena such as being effectively improved feed opening six months or so and occurring as soon as deformation, cracking, leak
Defect, even for bulk raw materials be stainless steel raw material operating condition in, feed opening device for feed service life can still reach two
Year or more, the quality of the converter evaporation cooling air flue at converter mouth is substantially increased, rhythm of production is accelerated.It is only needed when replacement
Anti- grinding cylinder is replaced, no replacement is required feed opening is replaced very convenient and production cost is greatly saved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the feed opening device for feed of converter evaporation cooling air flue of the present invention.
Fig. 2 is the structural schematic diagram of feed opening in Fig. 1.
Fig. 3 is the structural schematic diagram of anti-grinding cylinder in Fig. 1.
Fig. 4 is the structural schematic diagram of nitrogen seal device in Fig. 1.
Fig. 5 is the partial enlargement structural representation of part A in Fig. 4.
Specific embodiment
With reference to the accompanying drawing and preferred embodiment further details of the technical solution described in the present invention.
The entrance for the bulk raw materials that feed opening device for feed 2 is used as converter, generally symmetrical be set at converter mouth turn
1 two sides of furnace gasification cooling flue are symmetrical arranged two identical feed opening device for feed 2 in 1 two sides of converter evaporation cooling air flue.This
Embodiment discusses the specific structure of single feed opening device for feed 2.
As depicted in figs. 1 and 2, the feed opening device for feed 2 of converter evaporation cooling air flue of the present invention, comprising: feed opening 3
With anti-grinding cylinder 4, the structure of the feed opening 3 are as follows: outer barrel 31 is sheathed on inner cylinder 32, and inner cylinder 32 and outer barrel
Gap between 31 constitutes cavity.It is provided at the top of outer barrel 31 and inner cylinder 32 by the closed upper sealing plate 33 of cavity top,
It is provided in outer barrel 31 and 32 bottom of inner cylinder by the closed lower sealing plate 34 of cavity bottom.Be additionally provided on outer barrel 31 into
Water pipe 35 and outlet pipe, water inlet pipe 35 and outlet pipe are connected with cavity, and cavity is made to form water circulation channel.In the present embodiment
Water source in water inlet pipe 35 is provided by oxygen-eliminating device, thus water inlet pipe 35 is connected by connecting line with the water outlet of oxygen-eliminating device.
As shown in figures 1 and 3, it is provided with first flange 41 at the top of anti-grinding cylinder 4, is provided at the top of feed opening 3
Two flanges 30, anti-grinding cylinder 4 be inserted into the inner cylinder 32 of feed opening 3 after by first flange 41 and the connection of second flange 30, from
And be fixed on anti-grinding cylinder 4 in inner cylinder 32 with Detachable connection structure, it will be arranged between anti-grinding cylinder 4 and feed opening 3
Detachable connection structure need to only be dismantled between first flange 41 and second flange 30 with facilitating the replacement of subsequent anti-grinding cylinder 4
Connection bolt can take out anti-grinding cylinder 4 from the inner cylinder 32 of feed opening 3.
Anti- grinding cylinder 4 described in the present embodiment is the anti-grinding cylinder made of Q345R steel, and the wall thickness of anti-grinding cylinder 4 is
38~45mm.In the case where considering processing cost and bearing the multiple factors for scorching, adhering to and rubbing, the wall thickness of anti-grinding cylinder 4 is most
Preferred numerical value is 40 ㎜.
To prevent the gases such as the coal gas in gasification cooling flue 1 from leaking in external environment by anti-grinding cylinder 1, such as Fig. 1
With shown in Fig. 4, nitrogen seal device 5 is further fixedly arranged at the top of anti-grinding cylinder 4.The structure of the nitrogen seal device 5 includes: tubular
Interior coaming plate 51, tubular peripheral board 52, upper flange 53 and lower flange 54, coaming plate 51, tubular peripheral board 52,53 and of upper flange in tubular
Lower flange 54 surrounds to form annular seal cavity 50, annular seal cavity 50 connect by lower flange 54 with first flange 41, from
And it realizes and nitrogen seal device 5 is sealingly fastened in anti-4 top of grinding cylinder.Be provided on tubular peripheral board 52 at least one nitrogen into
The gas outlet of tracheae 6, each nitrogen inlet duct 6 is connected with annular seal cavity 50, in tubular on coaming plate 51 along the circumferential direction
Several pore channels 7 are offered, the nitrogen ejected from each pore channels 7, which is formed, stops the gases such as coal gas to pass through anti-grinding cylinder 4
The nitrogen-sealed layer leaked out.
As shown in figure 5, the axial line of each pore channels 7 with respect to the sealing surface of upper flange 53 inclination angle alpha be 25 °~
50°.The nitrogen-sealed layer that formation is sprayed from each pore channels 7 being obliquely installed forms inside compressing to gases such as coal gas
Power is leaked in external environment so as to gases such as the coal gas that is better protected from gasification cooling flue 1 by anti-grinding cylinder 4.
The axial line of each pore channels 7 is optimum tilt scheme when with respect to the inclination angle alpha of the sealing surface of upper flange 53 being 30 °.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any other form, and
Any modification made by according to the technical essence of the invention or equivalent variations, still fall within the scope of protection of present invention.
The invention has the advantages that being effectively improved phenomena such as occurring as soon as deformation, cracking, leak feed opening 3 six months or so
Defect substantially increases the service life of feed opening 3, is even blanking in the operating condition of stainless steel raw material for bulk raw materials
Mouth 2 service life of device can still reach 2 years or more, substantially increase the matter of the converter evaporation cooling air flue 1 at converter mouth
Amount, accelerates rhythm of production.Anti- grinding cylinder 4 is only needed to change when replacement, no replacement is required feed opening 3, replace it is very convenient and
Production cost is greatly saved.
Claims (7)
1. the feed opening device for feed of converter evaporation cooling air flue, comprising: feed opening, the structure of the feed opening are as follows: outer barrel set
Gap on inner cylinder, and between inner cylinder and outer barrel constitutes cavity；Be provided at the top of outer barrel and inner cylinder by
The closed upper sealing plate of cavity top is provided in outer barrel and inner cylinder bottom by the closed lower sealing plate of cavity bottom；In outer cylinder
Water inlet pipe and outlet pipe are additionally provided on body, water inlet pipe and outlet pipe are connected with cavity；It is characterized by also including abrasionproofs
Cylinder is provided with first flange at the top of anti-grinding cylinder, and second flange is provided at the top of feed opening, and anti-grinding cylinder is inserted into blanking
It is connected by first flange with second flange after in the inner cylinder of mouth, to which anti-grinding cylinder to be fixed in inner cylinder；In abrasionproof
Nitrogen seal device is further fixedly arranged at the top of cylinder.
2. the feed opening device for feed of converter evaporation cooling air flue according to claim 1, it is characterised in that: the anti-mill tube
Body is the anti-grinding cylinder made of Q345R steel, and the wall thickness of anti-grinding cylinder is 38~45mm.
3. the feed opening device for feed of converter evaporation cooling air flue according to claim 2, it is characterised in that: the wall of anti-grinding cylinder
Thickness is 40 ㎜.
4. the feed opening device for feed of converter evaporation cooling air flue according to claim 1 or 2, it is characterised in that: the nitrogen
The structure of seal apparatus includes: coaming plate in tubular, tubular peripheral board, upper flange and lower flange, coaming plate in tubular, tubular peripheral board,
Upper flange and lower flange surround to form annular seal cavity, and annular seal cavity is connect by lower flange with first flange；In cylinder
At least one nitrogen inlet duct is provided on shape peripheral board, the gas outlet of each nitrogen inlet duct is connected with annular seal cavity,
Several pore channels are along the circumferential direction offered on coaming plate in tubular, it is close that the nitrogen ejected from each pore channels forms nitrogen
Sealing.
5. the feed opening device for feed of converter evaporation cooling air flue according to claim 4, it is characterised in that: each pore channels
Axial line is 25 °~50 ° with respect to the inclination angle alpha of the sealing surface of upper flange.
6. the feed opening device for feed of converter evaporation cooling air flue according to claim 5, it is characterised in that: each pore channels
Axial line is 30 ° with respect to the inclination angle alpha of the sealing surface of upper flange.
7. the feed opening device for feed of converter evaporation cooling air flue according to claim 1 or 2, it is characterised in that: water inlet pipe is logical
Connecting line is crossed to be connected with the water outlet of oxygen-eliminating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811599240.2A CN109576438B (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 |
|---|---|---|---|
| CN201811599240.2A CN109576438B (en) | 2018-12-26 | 2018-12-26 | Feed opening device of converter vaporization cooling flue |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109576438A true CN109576438A (en) | 2019-04-05 |
| CN109576438B CN109576438B (en) | 2024-03-19 |
Family
ID=65932657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811599240.2A Active CN109576438B (en) | 2018-12-26 | 2018-12-26 | Feed opening device of converter vaporization cooling flue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109576438B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112695150A (en) * | 2021-01-26 | 2021-04-23 | 唐山市三川钢铁机械制造有限公司 | Partition plate cooling type scrap steel batching port and manufacturing method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6290899B1 (en) * | 1997-12-19 | 2001-09-18 | Sms Demag Ag | Converter installation having a divided sealing ring fitted between the converter and the flue gas chimney |
| CN101671761A (en) * | 2008-09-10 | 2010-03-17 | 中冶赛迪工程技术股份有限公司 | Vaporization cooling device |
| CN203080001U (en) * | 2013-02-28 | 2013-07-24 | 中冶赛迪工程技术股份有限公司 | Blanking opening |
| CN203625418U (en) * | 2013-12-17 | 2014-06-04 | 苏州海陆重工股份有限公司 | Feeding hole device for oxygen converter |
| CN207109031U (en) * | 2017-08-17 | 2018-03-16 | 中天钢铁集团有限公司 | Pneumatic steelmaking tubular type feed opening device for feed |
| CN209759495U (en) * | 2018-12-26 | 2019-12-10 | 苏州海陆重工股份有限公司 | Feed opening device of converter vaporization cooling flue |
-
2018
- 2018-12-26 CN CN201811599240.2A patent/CN109576438B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6290899B1 (en) * | 1997-12-19 | 2001-09-18 | Sms Demag Ag | Converter installation having a divided sealing ring fitted between the converter and the flue gas chimney |
| CN101671761A (en) * | 2008-09-10 | 2010-03-17 | 中冶赛迪工程技术股份有限公司 | Vaporization cooling device |
| CN203080001U (en) * | 2013-02-28 | 2013-07-24 | 中冶赛迪工程技术股份有限公司 | Blanking opening |
| CN203625418U (en) * | 2013-12-17 | 2014-06-04 | 苏州海陆重工股份有限公司 | Feeding hole device for oxygen converter |
| CN207109031U (en) * | 2017-08-17 | 2018-03-16 | 中天钢铁集团有限公司 | Pneumatic steelmaking tubular type feed opening device for feed |
| CN209759495U (en) * | 2018-12-26 | 2019-12-10 | 苏州海陆重工股份有限公司 | Feed opening device of converter vaporization cooling flue |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112695150A (en) * | 2021-01-26 | 2021-04-23 | 唐山市三川钢铁机械制造有限公司 | Partition plate cooling type scrap steel batching port and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109576438B (en) | 2024-03-19 |
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