WO2016062740A1 - Dispositif de refroidissement des tourillons de support d'une goulotte de distribution d'un four à cuve - Google Patents
Dispositif de refroidissement des tourillons de support d'une goulotte de distribution d'un four à cuve Download PDFInfo
- Publication number
- WO2016062740A1 WO2016062740A1 PCT/EP2015/074302 EP2015074302W WO2016062740A1 WO 2016062740 A1 WO2016062740 A1 WO 2016062740A1 EP 2015074302 W EP2015074302 W EP 2015074302W WO 2016062740 A1 WO2016062740 A1 WO 2016062740A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cooling
- chute
- supply
- return
- journals
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/18—Bell-and-hopper arrangements
- C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/20—Arrangements of devices for charging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/24—Cooling arrangements
Definitions
- the present invention relates to a device for cooling the support pins of a distribution chute of a charging installation of a shaft furnace, such as a blast furnace.
- Such an installation typically comprises a fixed feed channel disposed vertically in the center of the top, centered on the vertical axis of the furnace, and a distribution trough for distributing in the furnace the charged materials arriving through said channel.
- the dispensing chute is rotatable along said vertical and pivoting axis along a horizontal axis.
- the chute is typically pivotally mounted along said horizontal axis in a ferrule mounted coaxially around said feed channel and rotatable along the vertical axis.
- the chute is pivotally mounted in the shell by means of generally cylindrical pins of horizontal axis, on which the chute is secured and which are rotatably mounted along said horizontal axis in integral bearings of the ferrule.
- the rotation of the ferrule and the pivoting of the chute are generally provided by gear means located in an annular chamber surrounding the ferrule.
- the chute is fixed on both sides on radially inner ends, directed towards the vertical axis of the furnace, journals, which are pivotally driven by means of the gear drive means located in said room surrounding the shell.
- These drive means can act directly on the journals by meshing, or by means of arms or levers.
- the trunnions therefore have an inner end portion which is located inside the ferrule, and which is therefore exposed directly to the intense heat prevailing in the shaft furnace. In addition, they also receive conduction heat from the chute, itself fully exposed to the heat of the oven.
- rotating joints are used mounted axially on the outer end ends of the journals to provide the connection between the internal channels of the journals and the cooling water supply circuit, fixed on the ferrule, as especially stated in DE4216166.
- the present invention is intended to provide a solution to this problem, so as to ensure proper cooling of the trunnions, and possibly the chute, when it is not desired or it is impossible to connect the water supply circuits to the outer end of the trunnions. More generally, the invention aims to provide a new system for the supply and return cooling cooling water pins, to overcome the rotating joints conventionally used.
- the invention relates to a device for cooling the support pins of a distribution chute of a charging installation of a shaft furnace, such as a blast furnace, the chute being pivotally mounted along a horizontal axis on a ferrule coaxial in the oven, the chute being rotatably connected to the journals driven in rotation by drive means, the journals having internal cooling channels.
- the cooling device comprises supply and return ducts for the cooling water flowing in the inner channels, the supply and return ducts being connected to the trunnions by fittings fixed on the cylindrical surface of the trunnions, and the supply ducts and return are arranged to allow the rotary movement of the connectors around the pivot axis of the chute (that is to say around the axis of rotation of the trunnions), during pivoting thereof.
- connection of the cooling ducts on the periphery of the trunnions thus makes it possible to bring the cooling water into the internal channels of the trunnions from the cylindrical outer surface of the trunnions, instead of providing this connection by the face external frontal, which can therefore in particular be connected directly to the rotating drive means.
- the supply and return ducts are flexible ducts connected directly to the trunnions by screwed connections, but could also be formed of rigid pipes connected with rotating connectors.
- the journals are rotatably mounted inside bearings integral with the shell and the supply and return ducts pass through oblong slots provided in the bearings, the oblong slots extending circumferentially. over a predetermined arc length so as to allow the rotational movement of the connections of the supply and return ducts in said lights during the pivoting of the chute and trunnions.
- Each pin can be linked directly in rotation by its end on the output shaft of a gear reducer located on the horizontal pivot axis of the journals.
- the reducer can be a planetary reduction gear train directly driving the trunnions.
- the journals are then linked directly to the output shafts of the planetary gearheads.
- the bearings mentioned above, coaxially traversed by the trunnions do not necessarily have, in the spirit of the invention, a direct support function and guide rotation of the trunnions.
- the rotation guide and the support of the pins can be provided by the output shaft of the gearbox itself, output shaft which is guided in a housing of the gearbox, which housing is fixed on an outer end of said bearings.
- a radial clearance is preferentially formed between the journals and the bearings, and a seal is arranged between the journal and the bearing, axially located between the end of the bearing opening inside the shell and the lights where it passes. the connections of the flexible ducts.
- the reducers also serving as trunnion support could also be fixedly mounted relative to the ferrule by any suitable means, without requiring bearings as mentioned above, by means of only sealing means between the trunnions and the ferrule. passing the pins through the wall of said ferrule.
- the flexible ducts are connected to the journals at substantially diametrically opposite points.
- the output shaft of the gearbox enters a bore of the trunnion, where it is connected in rotation, and the internal cooling channels extend into the trunnion, between the couplings of the ducts. supply and return, between the bore and the outer surface of the trunnion.
- the internal cooling channels also extend between the bottom of the bore and the end of the trunnion carrying the gou burbot.
- Fig. 1 is a perspective view of one of the two devices for supporting and driving in pivoting of the delivery channel of a blast furnace;
- Fig. 2 is a perspective view of the single spigot showing its means of connection with an output shaft of a rotating drive reducer and its internal cooling circuits and water supply hoses. Description of a preferred execution
- FIG. 1 we see the shell 1 of the blast furnace loading device, rotatable along a vertical axis A1 of the blast furnace, and on which is secured a bearing 2, carrying at its end a gearbox 3 for the pivoting drive of the chute, not shown, along a horizontal axis A2.
- the gearbox 3 comprises a housing 31 fixed on the outer end 21 of the bearing 2 by a flange 32.
- the support trunnion 4 of the chute shown in FIG. 2, has towards its inner end 40, oriented towards the axis A1, a housing 41 arranged to receive support tabs of the trough, which are rigidly held therein, in a manner known per se.
- the other end of the pin 42 is rigidly connected to an output shaft of the gearbox 3, which output shaft is supported and guided in rotation in the housing 31.
- the trunnion comprises a blind bore 45 of diameter adapted to receive without radial play the end of the output shaft of the reducer, the rotational connection of said shaft and the trunnion being ensured for example by a key which can be seen the groove 48 formed in the bore 45.
- the pin 4 is located in the bearing 2 but, as already mentioned, it is the rotational guide of the output shaft of the gearbox in the housing 31 which supports and guiding the rotation of the pin. Therefore, the trunnion does not need to be supported and guided in the bearing 2, and a radial clearance, for example of the order of 1 mm, is provided between the trunnion 4 and the bore of the bearing 2 crossed by said pin.
- Oblong slots 22 are formed, in substantially diametrically opposite positions, in the wall of the bearing 2 between the shell 1 and the outer end 21 of the bearing 2.
- Cooling water supply hoses 5 are connected, in substantially diametrically opposite positions, on the trunnion, by connectors 51 screwed on the trunnion, ensuring the sealed connection between the flexible pipes 5 and the inner cooling channels 43, 47 of the trunnion, represented by the dotted lines 43.
- Internal channels in the spigot, between the connectors 51, the channel portions 43 extend longitudinally and / or in an arc between the bore 45 and the external surface of the trunnion.
- a portion 47 of these channels extends, for example radially, between the bottom 46 of the bore 45 and the inner end 40 of the pin.
- the opposite ends 52 of the hoses are connected to the fixed cooling circuit, not shown, housed in the chamber surrounding the shell 1 and rotating with said ferrule.
- the connectors 51 pass into the slots 22, which extend over a sufficient arc length to allow free movement of the connectors 51 during pivoting of the journal and therefore of the chute. This arc length will therefore be at least equal to the value of the maximum pivot angle in use of the chute, plus the length necessary to take account of the bulk of the connectors 51.
- the corresponding rotation range is typically 30 to 50 degrees, preferably 45 degrees.
- a seal by a sealing strip, is placed between the journal and the bearing, for example in a groove 44 provided for this purpose in the journal, this seal being axially located between the inner end of the bearing 2 and the slots 22 pierced in the bearing wall.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Blast Furnaces (AREA)
- General Details Of Gearings (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Charging Or Discharging (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020177011487A KR101760660B1 (ko) | 2014-10-22 | 2015-10-21 | 샤프트 로 분배 슈트 지지 저널을 냉각하기 위한 장치 |
US15/521,491 US10670339B2 (en) | 2014-10-22 | 2015-10-21 | Device for cooling a shaft furnace distribution chute support journals |
EP15790049.9A EP3209962B1 (fr) | 2014-10-22 | 2015-10-21 | Dispositif de refroidissement des tourillons de support d'une goulotte de distribution d'un four à cuve |
CN201580057285.5A CN107076516B (zh) | 2014-10-22 | 2015-10-21 | 用于对竖炉分配滑槽支撑耳轴进行冷却的设备 |
JP2017522154A JP6634079B2 (ja) | 2014-10-22 | 2015-10-21 | シャフト炉の分配シュート支持ジャーナルを冷却するための装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LULU92581 | 2014-10-22 | ||
LU92581A LU92581B1 (fr) | 2014-10-22 | 2014-10-22 | Dispositif de refroidissement des tourillons de support d'une goulotte de distribution d'un four à cuve |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016062740A1 true WO2016062740A1 (fr) | 2016-04-28 |
Family
ID=51945980
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2015/074302 WO2016062740A1 (fr) | 2014-10-22 | 2015-10-21 | Dispositif de refroidissement des tourillons de support d'une goulotte de distribution d'un four à cuve |
Country Status (8)
Country | Link |
---|---|
US (1) | US10670339B2 (fr) |
EP (1) | EP3209962B1 (fr) |
JP (1) | JP6634079B2 (fr) |
KR (1) | KR101760660B1 (fr) |
CN (1) | CN107076516B (fr) |
LU (1) | LU92581B1 (fr) |
TW (1) | TWI656315B (fr) |
WO (1) | WO2016062740A1 (fr) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4216166A1 (de) | 1991-06-12 | 1992-12-17 | Wurth Paul Sa | Vorrichtung zur kuehlung einer verteilerschurre einer schachtofen-beschickungsanlage |
WO2013107078A1 (fr) * | 2012-01-19 | 2013-07-25 | 秦皇岛秦冶重工有限公司 | Dispositif d'alimentation de goulotte supérieure de four pour haut-fourneau |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2346805A (en) * | 1942-11-09 | 1944-04-18 | Randall Graphite Products Corp | Liquid cooled bearing |
BE788477Q (fr) * | 1964-08-20 | 1973-01-02 | Union Carbide Corp | Perfectionnements aux dispositifs de chargement de four |
US3975578A (en) * | 1974-06-13 | 1976-08-17 | Greenewald Jr Herbert | Indirect arc metal melting furnace method |
LU84520A1 (fr) * | 1982-12-10 | 1984-10-22 | Wurth Paul Sa | Dispositif de refroidissement d'une installation de chargement d'un four a cuve |
JPH0613241Y2 (ja) * | 1988-09-21 | 1994-04-06 | 石川島播磨重工業株式会社 | ベルレス炉頂装入装置における冷却水管の接続構造 |
LU90294B1 (fr) * | 1998-10-06 | 2000-04-07 | Wurth Paul Sa | Dispositif de répartition de matières en vrac |
ES2312838T3 (es) * | 2003-01-13 | 2009-03-01 | Denel (Pty) Ltd | Conjunto de muñon. |
EP1801241A1 (fr) | 2005-12-23 | 2007-06-27 | Paul Wurth S.A. | Dispositif de refroidissement d'une installation de chargement d'un four a cuve avec goulotte tournante |
CN201149421Y (zh) * | 2007-11-20 | 2008-11-12 | 王艳英 | 一种煤基气基两用的竖炉还原装置 |
CN201395610Y (zh) * | 2009-05-18 | 2010-02-03 | 北京中冶设备研究设计总院有限公司 | 一种转炉耳轴内配管装置 |
LU91577B1 (en) * | 2009-06-05 | 2010-12-06 | Wurth Paul | Device for distributing charge material in a shaftfurnace. |
LU91645B1 (en) * | 2010-01-27 | 2011-07-28 | Wurth Paul Sa | A charging device for a metallurgical reactor |
-
2014
- 2014-10-22 LU LU92581A patent/LU92581B1/fr active
-
2015
- 2015-10-08 TW TW104133177A patent/TWI656315B/zh active
- 2015-10-21 CN CN201580057285.5A patent/CN107076516B/zh active Active
- 2015-10-21 EP EP15790049.9A patent/EP3209962B1/fr active Active
- 2015-10-21 KR KR1020177011487A patent/KR101760660B1/ko active IP Right Grant
- 2015-10-21 JP JP2017522154A patent/JP6634079B2/ja active Active
- 2015-10-21 US US15/521,491 patent/US10670339B2/en active Active
- 2015-10-21 WO PCT/EP2015/074302 patent/WO2016062740A1/fr active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4216166A1 (de) | 1991-06-12 | 1992-12-17 | Wurth Paul Sa | Vorrichtung zur kuehlung einer verteilerschurre einer schachtofen-beschickungsanlage |
WO2013107078A1 (fr) * | 2012-01-19 | 2013-07-25 | 秦皇岛秦冶重工有限公司 | Dispositif d'alimentation de goulotte supérieure de four pour haut-fourneau |
Also Published As
Publication number | Publication date |
---|---|
EP3209962B1 (fr) | 2018-04-04 |
US20170307293A1 (en) | 2017-10-26 |
TW201629417A (zh) | 2016-08-16 |
JP6634079B2 (ja) | 2020-01-22 |
KR20170057442A (ko) | 2017-05-24 |
TWI656315B (zh) | 2019-04-11 |
KR101760660B1 (ko) | 2017-07-24 |
EP3209962A1 (fr) | 2017-08-30 |
LU92581B1 (fr) | 2016-04-25 |
CN107076516B (zh) | 2018-08-24 |
JP2017538088A (ja) | 2017-12-21 |
CN107076516A (zh) | 2017-08-18 |
US10670339B2 (en) | 2020-06-02 |
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