CN107058657B - A kind of central throat tube and its replacing options of blast furnace roof - Google Patents
A kind of central throat tube and its replacing options of blast furnace roof Download PDFInfo
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- CN107058657B CN107058657B CN201710463652.2A CN201710463652A CN107058657B CN 107058657 B CN107058657 B CN 107058657B CN 201710463652 A CN201710463652 A CN 201710463652A CN 107058657 B CN107058657 B CN 107058657B
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- jam
- central throat
- throat tube
- boss
- lower clamping
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Blast Furnaces (AREA)
Abstract
The invention discloses a kind of central throat tube of blast furnace roof and its replacing options, jam lower clamping ring be fixed on distributing device it is suitable for reading on, central throat tube trunnion ontology is put into opposite with distributor chute in distributing device, pressing ring in jam lower clamping ring and jam is mutually fixed by boss.The overhanging boss of pressing ring can pass through the groove gap between the two neighboring boss of jam lower clamping ring in jam；Lifting lug is set on the overhanging boss of pressing ring in jam, amounts at least four lifting lugs of setting.It is used in the handover of 2 groups of entire replacement process totally 4 lifting lugs primary.Without promoting central throat tube at lower sealing valve maintenance door, directly central throat tube can be dropped to close at distributor chute without cutting upper pressing ring.Reach central throat tube replacement speed faster, saves human and material resources, the high purpose of safety coefficient.
Description
Technical field
The invention belongs to metallurgy high furnace furnace top equipment technical field, in particular to the central throat tube of a kind of blast furnace roof and its
Replacing options.
Background technique
In furnace roof gear-box inside center, main function is to prevent iron-smelting raw material directly and in gear-box for central throat tube position
Shell contact, prevents gear-box worn out, and gas leakage and gear structure inside is caused to damage.Central throat tube is iron-smelting raw material from batch can to furnace
Interior unique passage, the erosion by the impact wear of iron-smelting raw material and furnace roof high temperature, abrasion loss are larger for a long time.According to its use
Period needs that adequate measures and method is taken to safeguard and replace central throat tube.
Before of the invention propose, the structure type of central throat tube mainly uses to be added in pressing ring welding outer barrel and cylinder
The form of wear-resistant liner.The central throat tube for adopting the structure design generally uses two kinds of replacing options: one is, remove center
Lower clack box above trunnion hangs out central throat tube, and it is bothersome laborious to remove lower clack box, it is also desirable to by related hydraulic tube, lubrication management
It is removed with tracheae, returning dress, there is also difficulty, can reduce relevant apparatus performance, it is therefore desirable to sizable workload, the people of consuming
Power is more, the time is also longer, and security risk is also more.
Another is in Chinese public patent application CN103571987A " the central throat tube replacing options of blast furnace roof "
Used method takes out 3 top wear-resistant liner of central throat tube as shown in Figure 1, being first turned on down close 1 two sides maintenance door of clack box,
3 vertical centred position of central throat tube welds lifting lug in close clack box 1 under, is sling central throat tube 3 with chain block 2, will thereon
The pressing ring in portion is cut into three sections and takes out, and loosens chain block 2, central throat tube 3 is hoisted to the cloth being vertically arranged out of furnace and is slipped
At slot 4, then notify operative employee change distributor chute 4 turning angle to 75 degree (i.e. change distributor chute turning angle extremely
At the big square hole of furnace roof), furnace roof driving 5 hooks mouth under central throat tube 3 with sharing suspension hook, discharges jack on one side, gradually slips to cloth
Moved below slot 4, penetrate wirerope and tie central throat tube 3, and using furnace roof driving 5 by chain block 2 by central throat tube 3 from
It is hung at the big square hole 6 of furnace roof.Present invention replacement speed is fast, uses manpower and material resources sparingly, and safety coefficient is high.In the process, need into
Row cutting operation, it is time-consuming bothersome, in addition, distributor chute length is longer, penetrates wirerope and bottle up central throat tube, it is not easy to operate, such as
If saving the process that cutting is taken out fixed ring and reeved, it will become more convenient for replacement central throat tube, operate
The danger of personnel can also lower.
Summary of the invention
The technical problem to be solved by the present invention is to, the central throat tube and its replacing options of a kind of blast furnace roof are provided, with gram
The defect for taking the prior art reaches central throat tube replacement speed faster, saves human and material resources, the high purpose of safety coefficient.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
A kind of central throat tube of blast furnace roof mainly includes outer barrel, support sleeve and wear-resistant liner, it is characterised in that:
The wear-resistant liner is divided into the first wear-resistant liner, the second wear-resistant liner, third wear-resistant liner, and three kinds of wear-resistant liners are hollow convex
Mesa-shaped cylinder and be that major diameter one end is arranged upward；Multiple support sleeves, multiple thirds are successively stacked in outer barrel from the bottom to top
Wear-resistant liner is overlapped is fixed in support sleeve up and down, further includes pressing ring in mutually matched jam lower clamping ring and jam, first is resistance to
Mill lining plate and the second wear-resistant liner are from top to bottom stacked and upper limb is all fixed in jam on pressing ring；Pressing ring outer rim is set in jam
Set the multiple overhanging boss stretched out toward center of circle opposite direction, multiple overhanging circumferentially spaced distributions of boss；Jam lower clamping ring
Along the circumferential direction toward center of circle interior direction it is uniformly distributed in stretch boss, both pressing rings boss number and arrangement on jam lower clamping ring and jam
Angle is consistent, and pressing ring in jam lower clamping ring and jam is mutually fixed by boss；And pressing ring is overhanging convex in jam
Platform can pass through the groove gap between the two neighboring boss of jam lower clamping ring；Lifting lug is set on the overhanging boss of pressing ring in jam,
At least four lifting lugs of total setting.
Further, pressing ring diameter dimension in jam lower clamping ring and jam are as follows: So that jam lower clamping ring and card
Hanging up pressing ring can mutually be fixed by boss；And pressing ring is both respective two neighboring boss in jam lower clamping ring and jam
Between groove gap angle [alpha] be greater than the angle beta of boss itself, enable the overhanging boss of pressing ring in jam to pass through jam lower clamping ring
Groove gap between two neighboring boss.
Further, the upright projection of both pressing ring and lifting lug is included in outer barrel in jam, so that pressing ring in jam
Central throat tube ontology is constituted with outer barrel inner part.
Further, jam lower clamping ring be fixed on distributing device it is suitable for reading on, central throat tube trunnion ontology is put into distributing device
In it is opposite with distributor chute, pressing ring in jam lower clamping ring and jam is mutually fixed by boss.
Further, multiple third wear-resistant liner overlappings are welded in support sleeve, and use bayonet lock with hole is made in circumferencial direction
Spot welding after fixation.
Further, when needing replacing central throat tube, the turning angle of distributor chute is first adjusted to maximum position, is rotated
Distributor chute makes it just towards burner maintenance door；Then chain hoist at the top of batch can is installed at the top of batch can, it is successively close under
The wear-resistant liner taken out in the expansion bellows being located above central throat tube ontology is sealed in valve maintenance door；Chain type at the top of batch can is risen
Two chain slings of heavy-duty machine are hung on axisymmetric 2 lifting lugs of central throat tube ontology, slightly lift central throat tube ontology, at this time except card
The central throat tube ontology hung outside lower clamping ring is all raised；
Central throat tube ontology is rotated horizontally into set angle and reduces chain sling, so that the overhanging boss of pressing ring passes through in jam
The groove gap formed between boss is stretched in jam lower clamping ring, by the uni-drive gear box of blast furnace by central throat tube ontology from cloth
It is decreased until and reaches close to distributor chute in device, observed by burner maintenance door；
The outer chain hoist of burner maintenance door on the outside of burner maintenance door is reused, central throat tube ontology feeding tank deck is hooked
Portion's chain hoist chain sling loosens chain hoist chain sling at the top of batch can and shortens hanging for the outer chain hoist of burner maintenance door
Central throat tube is pulled to burner maintenance door by chain, until that can be hooked to two chain slings of chain hoist outside burner maintenance door separately
On outer two axial symmetry lifting lugs；Two chain slings of chain hoist at the top of batch can are unclamped, with outside the burner maintenance door outside burner
Two chains of chain hoist draw central throat tubes, until central throat tube is located at the outside of burner maintenance door, removes hang over lifting lug at this time
On batch can at the top of chain hoist chain sling, using chain hoist outside the burner maintenance door on the outside of burner maintenance door by center
Trunnion is hung from burner maintenance door；It is used in the handover of 2 groups of whole process totally 4 lifting lugs primary.
For compared with the existing technology, the central throat tube and its replacing options of blast furnace roof of the invention, jam lower clamping ring
Be fixed on distributing device it is suitable for reading on, central throat tube trunnion ontology is put into it is opposite with distributor chute in distributing device so that under jam
Pressing ring can mutually be fixed by boss on pressing ring and jam.It is adjacent can to pass through jam lower clamping ring for the overhanging boss of pressing ring in jam
Groove gap between two boss；It, can be straight without cutting upper pressing ring without promoting central throat tube at lower sealing valve maintenance door
It connects and drops to central throat tube close at distributor chute.Reach central throat tube replacement speed faster, save human and material resources, safety is
The high purpose of number.
Detailed description of the invention
Fig. 1 is prior art attached drawing.
Fig. 2 is the central throat tube main view for the blast furnace roof that the present invention is implemented.
Fig. 3 is the top view of Fig. 2.
Fig. 4 is 8 top view of pressing ring in jam of the present invention.
Fig. 51 top view of jam lower clamping ring of the present invention.
Fig. 6 is replacement central throat tube schematic diagram of the invention.
Appended drawing reference correspondence is as follows in attached drawing 2-6:
Jam lower clamping ring 1, it is interior stretch boss 1-1, the first wear-resistant liner 2, the second wear-resistant liner 3, third wear-resistant liner 4, weldering
Connect outer barrel 5., support sleeve, bayonet lock 7, pressing ring 8 in jam, overhanging boss 8-1, lifting lug 9, central throat tube 10, chain type at the top of batch can
Crane 11, expansion bellows 12, wear-resistant liner 13, distributor chute 14, the outer chain hoist 15 of burner maintenance door, burner maintenance
Door 16, lower sealing valve 17, distributing device 18.
Specific embodiment
The central throat tube for the blast furnace roof implemented according to the present invention is as shown in figures 2-6, wear-resisting by jam lower clamping ring 1, first
Liner plate 2, the second wear-resistant liner 3, third wear-resistant liner 4, welding outer barrel 5, support sleeve, bayonet lock 7, pressing ring 8, lifting lug 9 in jam
Composition.First wear-resistant liner 2, the second wear-resistant liner 3, third wear-resistant liner 4 are hollow convex mesa-shaped cylinder and are major diameters
One end is arranged upward.
Support sleeve 6 is successively stacked in the welding outer barrel 5 from the bottom to top, multiple overlappings of third wear-resistant liner 4 are welded on
In support sleeve 6, and matches in circumferencial direction and make hole, spot welding after being fixed with bayonet lock 7；First wear-resistant liner 2 and the second wear-resistant liner 3,
It successively stacks and upper limb is all fixed in jam on pressing ring 8, as shown in Fig. 2, pressing ring 8 and lifting lug 9 are included in welding in jam
It is two parts therein in outer barrel 5.The ontology of composition described above central throat tube is placed in the interior of jam lower clamping ring 1 and stretches boss
On 1-1.
8 matching design of pressing ring is processed on the jam lower clamping ring 1 and jam, and jam lower clamping ring 1 is along the circumferential direction toward the center of circle
Boss 1-1 is stretched in interior direction is 6 (but being not limited to 6) uniformly distributed, pressing ring is along the processing of 8 circumferencial directions and jam lower clamping ring in jam
The 1 consistent overhanging boss 8-1 of distribution, i.e., the two boss number and layout angle are consistent, while guaranteeing diameter dimensionAnd the bigger about β of angle [alpha] of processing.Pressing ring 8 in jam lower clamping ring 1 and jam is enabled to consolidate fixing.
9 numbers of the lifting lug are 4, are welded in jam on the overhanging boss 8-1 of pressing ring 8.
In use, as shown in fig. 6, central throat tube 10 is put into distributing device 18 fixed.
When needing replacing central throat tube 10, it is first turned on 17 maintenance door of lower sealing valve, opens distributor chute maintenance door, it will
The turning angle of distributor chute 14 is adjusted to maximum position, and rotating cloth chute makes it just towards burner maintenance door 16；On batch can top
Chain hoist 11 at the top of batch can is installed in portion, from the expansion ripple taken out above central throat tube in 17 maintenance door of lower sealing valve
Wear-resistant liner 13 (signal arrow step A) in pipe 12, wear-resistant liner 13 herein is not to belong to central throat tube, and swollen
What swollen bellows 12 carried, 11 two chain slings of chain hoist are hung on 10 axisymmetric 2 lifting lugs 9 of central throat tube, slightly
Lift central throat tube 10, the remaining part in addition to jam lower clamping ring 1 is all raised at this time；Central throat tube 10 is rotated horizontally 30 °
And chain sling is reduced, the overhanging boss 8-1 of pressing ring 8 in jam is formed by being stretched between boss 1-1 in jam lower clamping ring 1
Groove, central throat tube 10 is decreased until from distributing device 18 by the uni-drive gear box of blast furnace and is reached close to distributor chute 14
(signal arrow step B), is observed by burner maintenance door.It is designed in this way without promoting central throat tube 10 to lower sealing valve 17
At maintenance door, directly central throat tube 10 can be dropped to close at distributor chute 14 without cutting upper pressing ring；It is examined using burner
Repair another chain hoist (the outer chain hoist 15 of burner maintenance door) in 16 outside of door, the outer chain type lifting of the burner maintenance door
The pipe hook of fixing belt suspension hook lives the chain sling of chain hoist 11 at the top of the material feeding jar of central throat tube 10 on machine 15, loosens at the top of batch can
Central throat tube 10 is pulled to burner maintenance by 11 chain sling of chain hoist and the chain sling for shortening the outer chain hoist 15 of burner maintenance door
Door, until two chain slings of chain hoist 15 outside burner maintenance door can be hooked on other two axial symmetry lifting lug 9 to (signal
Arrow step C)；Two chain slings of chain hoist 11 at the top of batch can in batch can are unclamped, with outside the burner maintenance door outside burner
15 two chain slings of chain hoist draw central throat tube, until central throat tube is located at outside (the signal arrow D step of burner maintenance door 16
Suddenly), the chain sling for hanging over the chain hoist of the top on lifting lug 9 11 is removed at this time, recycles the outer chain hoist of burner maintenance door
15 hang central throat tube 10 from burner maintenance door.The handover of 2 groups of 4 lifting lugs uses so that replacement process safety coefficient is higher,
It is more easy.
The central throat tube of blast furnace roof of the present invention, structure is simple, easily facilitates repair and replacement, saves human and material resources,
Safety coefficient is high.
Claims (6)
1. a kind of central throat tube of blast furnace roof mainly includes outer barrel, support sleeve and wear-resistant liner, it is characterised in that: institute
It states wear-resistant liner and is divided into the first wear-resistant liner, the second wear-resistant liner, third wear-resistant liner, three kinds of wear-resistant liners are cannular boss
Shape cylinder and be that major diameter one end is arranged upward；Multiple support sleeves are successively stacked in outer barrel from the bottom to top, multiple thirds are resistance to
Mill lining plate is overlapped is fixed in support sleeve up and down, further includes pressing ring in mutually matched jam lower clamping ring and jam, first is wear-resisting
Liner plate and the second wear-resistant liner are from top to bottom stacked and upper limb is all fixed in jam on pressing ring；Pressing ring outer rim is arranged in jam
The multiple overhanging boss stretched out toward center of circle opposite direction, multiple overhanging circumferentially spaced distributions of boss；Jam lower clamping ring edge
Circumferencial direction toward center of circle interior direction it is uniformly distributed in stretch boss, both pressing rings boss number and cloth angle setting on jam lower clamping ring and jam
Degree is consistent, and pressing ring in jam lower clamping ring and jam is mutually fixed by boss；And the overhanging boss of pressing ring in jam
The groove gap between the two neighboring boss of jam lower clamping ring can be passed through；Lifting lug is set on the overhanging boss of pressing ring in jam, altogether
Meter at least four lifting lugs of setting.
2. the central throat tube of blast furnace roof according to claim 1, it is characterised in that:
Pressing ring diameter dimension on jam lower clamping ring and jam are as follows: pressing ring outer diameter A < jam lower clamping ring boss internal diameter B < card in jam
Hang up pressing ring boss outer diameter C < jam lower clamping ring internal diameter D so that pressing ring can pass through boss phase on jam lower clamping ring and jam
Mutually fix；And pressing ring is both that the groove gap angle [alpha] between respective two neighboring boss is greater than in jam lower clamping ring and jam
The angle beta of boss itself enables the overhanging boss of pressing ring in jam to pass through the groove between the two neighboring boss of jam lower clamping ring
Gap.
3. the central throat tube of blast furnace roof according to claim 1, it is characterised in that:
The upright projection of both pressing ring and lifting lug is included in outer barrel in jam, so that pressing ring and outer barrel inner part in jam
Constitute central throat tube ontology.
4. the central throat tube of blast furnace roof according to claim 1, it is characterised in that:
Jam lower clamping ring be fixed on distributing device it is suitable for reading on, central throat tube trunnion ontology is put into distributing device and distributor chute phase
It is right, pressing ring in jam lower clamping ring and jam is mutually fixed by boss.
5. the central throat tube of blast furnace roof according to claim 1, it is characterised in that:
Multiple third wear-resistant liner overlappings are welded in support sleeve, and fix rear spot welding with bayonet lock with hole is made in circumferencial direction.
6. the replacing options of the central throat tube of blast furnace roof described in one of -5 according to claim 1, it is characterised in that:
When needing replacing central throat tube, the turning angle of distributor chute is first adjusted to maximum position, rotating cloth chute makes it
Just towards burner maintenance door；Then chain hoist at the top of batch can is installed at the top of batch can, successively from lower sealing valve maintenance door
Take out the wear-resistant liner in the expansion bellows being located above central throat tube ontology；By two chain slings of chain hoist at the top of batch can
It hangs on axisymmetric 2 lifting lugs of central throat tube ontology, slightly lifts central throat tube ontology, at this time in addition to jam lower clamping ring
Central throat tube ontology is all raised；
Central throat tube ontology is rotated horizontally into set angle and reduces chain sling, so that the overhanging boss of pressing ring passes through jam in jam
The groove gap formed between boss is stretched in lower clamping ring, by the uni-drive gear box of blast furnace by central throat tube ontology from distributing device
Decline is observed close to distributor chute by burner maintenance door；
The outer chain hoist of burner maintenance door on the outside of burner maintenance door is reused, chain at the top of central throat tube ontology material feeding jar is hooked
Formula crane chain sling loosens batch can top chain hoist chain sling and shortens the chain sling of the outer chain hoist of burner maintenance door, will
Central throat tube pulls to burner maintenance door, until that two chain slings of chain hoist outside burner maintenance door can be hooked to other two
On axial symmetry lifting lug；Two chain slings of chain hoist at the top of batch can are unclamped, are risen with chain type outside the burner maintenance door outside burner
Two chains of heavy-duty machine draw central throat tubes, until central throat tube is located at the outside of burner maintenance door, remove the material hung on lifting lug at this time
The chain sling of tank top chain hoist, using chain hoist outside the burner maintenance door on the outside of burner maintenance door by central throat tube from
Burner maintenance door is hung；2 groups of whole process totally 4 lifting lugs handover use it is primary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710463652.2A CN107058657B (en) | 2017-06-19 | 2017-06-19 | A kind of central throat tube and its replacing options of blast furnace roof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710463652.2A CN107058657B (en) | 2017-06-19 | 2017-06-19 | A kind of central throat tube and its replacing options of blast furnace roof |
Publications (2)
| Publication Number | Publication Date |
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| CN107058657A CN107058657A (en) | 2017-08-18 |
| CN107058657B true CN107058657B (en) | 2019-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710463652.2A Active CN107058657B (en) | 2017-06-19 | 2017-06-19 | A kind of central throat tube and its replacing options of blast furnace roof |
Country Status (1)
| Country | Link |
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| CN (1) | CN107058657B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109576426A (en) * | 2018-12-18 | 2019-04-05 | 山东钢铁股份有限公司 | A kind of replacing options of blast furnace roof central throat tube |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1013482A1 (en) * | 1981-12-25 | 1983-04-23 | Ленинградский государственный институт по проектированию металлургических заводов | Blast furnace grate |
| SU1113414A1 (en) * | 1982-08-11 | 1984-09-15 | Днепропетровский Завод Металлургического Оборудования | Charge distributor for blast furnace charging apparatus |
| SU1671702A1 (en) * | 1989-08-07 | 1991-08-23 | Производственное объединение "Азовмаш" | Device for preparation of cone and cup for work |
| CN2518868Y (en) * | 2001-05-24 | 2002-10-30 | 攀枝花钢铁有限责任公司机械制造公司 | Quick-changing combined central throat tube |
| CN201670847U (en) * | 2010-04-30 | 2010-12-15 | 武汉钢铁(集团)公司 | Central throat at central part of bell-less top gearbox of blast furnace |
| CN103571987A (en) * | 2012-07-30 | 2014-02-12 | 上海宝冶集团有限公司 | Method for replacing central throat pipe at blast furnace roof |
| CN106148622A (en) * | 2015-04-24 | 2016-11-23 | 周南夫 | A kind of blast-furnace distributor of Novel chute hang |
-
2017
- 2017-06-19 CN CN201710463652.2A patent/CN107058657B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1013482A1 (en) * | 1981-12-25 | 1983-04-23 | Ленинградский государственный институт по проектированию металлургических заводов | Blast furnace grate |
| SU1113414A1 (en) * | 1982-08-11 | 1984-09-15 | Днепропетровский Завод Металлургического Оборудования | Charge distributor for blast furnace charging apparatus |
| SU1671702A1 (en) * | 1989-08-07 | 1991-08-23 | Производственное объединение "Азовмаш" | Device for preparation of cone and cup for work |
| CN2518868Y (en) * | 2001-05-24 | 2002-10-30 | 攀枝花钢铁有限责任公司机械制造公司 | Quick-changing combined central throat tube |
| CN201670847U (en) * | 2010-04-30 | 2010-12-15 | 武汉钢铁(集团)公司 | Central throat at central part of bell-less top gearbox of blast furnace |
| CN103571987A (en) * | 2012-07-30 | 2014-02-12 | 上海宝冶集团有限公司 | Method for replacing central throat pipe at blast furnace roof |
| CN106148622A (en) * | 2015-04-24 | 2016-11-23 | 周南夫 | A kind of blast-furnace distributor of Novel chute hang |
Non-Patent Citations (1)
| Title |
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| PW炉顶系统（并罐）中心喉管快速更换方法研究;芦涛;《企业技术开发》;20150430;第34卷(第12期);第20-23页 * |
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