CN107058657A - The central throat tube and its replacing options of a kind of blast furnace roof - Google Patents
The central throat tube and its replacing options of a kind of blast furnace roof Download PDFInfo
- Publication number
- CN107058657A CN107058657A CN201710463652.2A CN201710463652A CN107058657A CN 107058657 A CN107058657 A CN 107058657A CN 201710463652 A CN201710463652 A CN 201710463652A CN 107058657 A CN107058657 A CN 107058657A
- Authority
- CN
- China
- Prior art keywords
- card
- throat tube
- central throat
- boss
- lower clamping
- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
Abstract
The invention discloses a kind of central throat tube of blast furnace roof and its replacing options, card hang lower clamping ring be fixed on distributing device it is suitable for reading on, central throat tube trunnion body is put into relative with distributor chute in distributing device so that card hangs lower clamping ring and card hangs up trim ring and can mutually fixed by boss.Card hangs up the overhanging boss of trim ring can hang the groove gap between the two neighboring boss of lower clamping ring through card；Card, which is hung up, sets hanger on the overhanging boss of trim ring, at least four hangers are set altogether.Whole 2 groups of Renewal process totally 4 hangers handing-over using once.Central throat tube need not be lifted at lower sealing valve maintenance door, directly can be dropped to central throat tube close at distributor chute without the upper trim ring of cutting.Reach that central throat tube changes speed faster, use manpower and material resources sparingly, the high purpose of safety coefficient.
Description
Technical field
The invention belongs to metallurgy high furnace furnace top equipment technical field, the central throat tube of more particularly to a kind of blast furnace roof and its
Replacing options.
Background technology
Central throat tube position in furnace roof gear-box inside center, main function be prevent iron-smelting raw material directly with gear-box
Shell is contacted, and prevents gear-box worn out, causes gas leakage and gear structure inside to damage.Central throat tube is iron-smelting raw material from batch can to stove
Interior unique passage, for a long time by the impact wear of iron-smelting raw material and corroding for furnace roof high temperature, wear extent is larger.Used according to it
Cycle is, it is necessary to take adequate measures and method to safeguard and change central throat tube.
Before present invention proposition, the structure type of central throat tube is mainly welded in outer cylinder body and cylinder using trim ring to be added
The form of abrasion-proof backing block.The central throat tube of design is adopted the structure typically using 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
Removed with tracheae, return dress there is also difficulty, relevant apparatus performance can be reduced, it is therefore desirable to sizable workload, the people of consuming
Power is more, the time is also longer, and potential safety hazard is also more.
Another is Chinese Patent Application Publication CN103571987A《The central throat tube replacing options of blast furnace roof》In
The method used, as shown in figure 1, being first turned on down the close both sides maintenance door of clack box 1, takes out the top abrasion-proof backing block of central throat tube 3,
The vertical centred position of central throat tube 3 welds hanger in close clack box 1 under, is sling central throat tube 3 with chain block 2, will thereon
The trim ring in portion is cut into three sections and taken out, and loosens chain block 2, central throat tube 3 is hoisted to the cloth being vertically arranged out of stove and slipped
At groove 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 3 time mouths of central throat tube with sharing suspension hook, while discharging jack, is progressively slipped to cloth
The lower section of groove 4 is mobile, penetrates steel wire rope and ties central throat tube 3, and using furnace roof driving 5 by chain block 2 by central throat tube 3 from
Hung at the big square hole 6 of furnace roof.The present invention changes speed soon, uses manpower and material resources sparingly, and safety coefficient is high.In the process, it is necessary to enter
Row cutting operation, takes bothersome, in addition, distributor chute length is longer, penetrates steel wire rope and bottles up central throat tube, not easy to operate, such as
If saving cutting takes out retainer ring and the process reeved, it will become more convenient for changing central throat tube, operate
The danger of personnel can also lower.
The content of the invention
The technical problem to be solved in the present invention is to provide the central throat tube and its replacing options of a kind of blast furnace roof, with gram
The defect of prior art is taken, reaches that central throat tube changes speed faster, uses manpower and material resources sparingly, the high purpose of safety coefficient.
In order to solve the above technical problems, the present invention is adopted the following technical scheme that：
A kind of central throat tube of blast furnace roof, mainly including outer cylinder body, support set and abrasion-proof backing block, it is characterised in that：
The abrasion-proof backing block is divided into the first abrasion-proof backing block, the second abrasion-proof backing block, the 3rd abrasion-proof backing block, and three kinds of abrasion-proof backing blocks are hollow convex
Mesa-shaped cylinder and be that major diameter one end is set upward；Stack multiple support sets, multiple three in outer cylinder body successively from the bottom to top
It is overlapping above and below abrasion-proof backing block to be fixed in support set, in addition to the card of mutual cooperation hangs lower clamping ring and card and hangs up trim ring, first is resistance to
Mill lining plate and the second abrasion-proof backing block are from top to bottom stacked and upper limb is all fixed on card and hung up on trim ring；Card hangs up trim ring outer rim and set
Put the multiple overhanging boss stretched out toward center of circle opposite direction, multiple circumferentially spaced distributions of overhanging boss；Card hangs lower clamping ring
Boss along the circumferential direction is stretched toward direction on the inside of the center of circle is uniformly interior, card hangs lower clamping ring and card hangs up both trim rings boss number and arrangement
Angle is consistent so that card hangs lower clamping ring and card hangs up trim ring and can mutually fixed by boss；And to hang up trim ring overhanging convex for card
Platform can hang the groove gap between the two neighboring boss of lower clamping ring through card；Card is hung up sets hanger on the overhanging boss of trim ring,
At least four hangers are set altogether.
Further, card, which hangs lower clamping ring and card and hangs up trim ring diameter dimension, is： So that card hangs lower clamping ring and card
Hanging up trim ring can mutually be fixed by boss；And it is respective two neighboring boss that card extension lower clamping ring and card, which hang up trim ring both of which,
Between groove clearance angle α be more than boss itself angle beta so that card hang up the overhanging boss of trim ring can through card hang lower clamping ring
Groove gap between two neighboring boss.
Further, card hangs up the upright projection of both trim ring and hanger in outer cylinder body so that card hangs up trim ring
Central throat tube body is constituted with outer cylinder body inner part.
Further, card hang lower clamping ring be fixed on distributing device it is suitable for reading on, central throat tube trunnion body is put into distributing device
In it is relative with distributor chute so that card hangs lower clamping ring and card hangs up trim ring and can mutually fixed by boss.
Further, multiple 3rd abrasion-proof backing blocks are overlapping is welded in support set, and uses bayonet lock with hole is made in circumferencial direction
Spot welding after fixation.
Further, when needing to change central throat tube, the turning angle of distributor chute is first adjusted to maximum position, 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 close under successively
The abrasion-proof backing block taken out in the expansion bellows being located above central throat tube body 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 hangers of central throat tube body, somewhat lift central throat tube body, now except card
The central throat tube body hung outside lower clamping ring is all raised；
Central throat tube body is horizontally rotated into set angle and chain sling is reduced so that the overhanging boss that card hangs up trim ring passes through
Card, which is hung in lower clamping ring, stretches the groove gap formed between boss, by the uni-drive gear box of blast furnace by central throat tube body from cloth
It is decreased until and is reached close to distributor chute in device, is 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 body feeding tank deck is hooked
Portion's chain hoist chain sling, loosens batch can top chain hoist chain sling and shortens hanging for the outer chain hoist of burner maintenance door
Chain, burner maintenance door is pulled to by central throat tube, until that can be hooked to two chain slings of chain hoist outside burner maintenance door separately
On outer two axial symmetry hangers；Two chain slings of chain hoist at the top of batch can are unclamped, with the burner maintenance outside burner outdoors
Two chains of chain hoist draw central throat tube, until central throat tube is located at the outside of burner maintenance door, now removes and hang over hanger
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；2 groups of whole process totally 4 hangers handing-over using once.
For prior art, the central throat tube and its replacing options of blast furnace roof of the invention, card hang lower clamping ring
Be fixed on distributing device it is suitable for reading on, central throat tube trunnion body is put into relative with distributor chute in distributing device so that card hang under
Trim ring and card hang up trim ring and can mutually fixed by boss.Card hangs up the overhanging boss of trim ring can be adjacent through card extension lower clamping ring
Groove gap between two boss；Central throat tube need not be lifted at lower sealing valve maintenance door, can be straight without the upper trim ring of cutting
Connect and drop to central throat tube close at distributor chute.Reach that central throat tube changes speed faster, use manpower and material resources sparingly, safety system
The high purpose of number.
Brief description of the drawings
Fig. 1 is prior art accompanying drawing.
The central throat tube front view for the blast furnace roof that Fig. 2 is implemented for the present invention.
Fig. 3 is Fig. 2 top view.
Fig. 4 hangs up the top view of trim ring 8 for present invention card.
Fig. 5 present invention cards hang the top view of lower clamping ring 1.
Fig. 6 is replacing central throat tube schematic diagram of the invention.
Reference correspondence is as follows in accompanying drawing 2-6：
Card hang lower clamping ring 1, it is interior stretch boss 1-1, the first abrasion-proof backing block 2, the second abrasion-proof backing block 3, the 3rd abrasion-proof backing block 4, weldering
Connect outer cylinder body 5., support set, bayonet lock 7, card and hang up trim ring 8, overhanging boss 8-1, hanger 9, central throat tube 10, batch can top chain type
Crane 11, expansion bellows 12, abrasion-proof backing block 13, distributor chute 14, the outer chain hoist 15 of burner maintenance door, burner maintenance
Door 16, lower sealing valve 17, distributing device 18.
Embodiment
The central throat tube for the blast furnace roof implemented according to the present invention, as shown in figures 2-6, hangs lower clamping ring 1, first wear-resisting by card
Liner plate 2, the second abrasion-proof backing block 3, the 3rd abrasion-proof backing block 4, welding outer cylinder body 5, support set, bayonet lock 7, card hang up trim ring 8, hanger 9
Composition.First abrasion-proof backing block 2, the second abrasion-proof backing block 3, the 3rd abrasion-proof backing block 4 are hollow convex mesa-shaped cylinder and are major diameters
One end is set upward.
Support set 6 is stacked successively from the bottom to top in the welding outer cylinder body 5, and multiple 3rd abrasion-proof backing blocks 4 are overlapping to be welded on
In support set 6, and in circumferencial direction with hole is made, with spot welding after the fixation of bayonet lock 7；First abrasion-proof backing block 2 and the second abrasion-proof backing block 3,
Stack successively and upper limb is all fixed on card and hung up on trim ring 8, as shown in Fig. 2 card hangs up trim ring 8 and hanger 9 is included in welding
It is two parts therein in outer cylinder body 5.The body of composition described above central throat tube is positioned over the interior of card extension lower clamping ring 1 and stretches boss
On 1-1.
The card hangs lower clamping ring 1 and card hangs up the processing of the matching design of trim ring 8, and card hangs lower clamping ring 1 along the circumferential direction toward the center of circle
Boss 1-1 is stretched in uniform 6 of inner side direction (but being not limited to 6), card hangs up trim ring and hangs lower clamping ring with blocking along the processing of 8 circumferencial directions
The consistent overhanging boss 8-1 of 1 distribution, i.e. both boss numbers and layout angle is consistent, while ensureing diameter dimensionAnd the bigger about β of angle [alpha] of processing.Enable card to hang lower clamping ring 1 and card hangs up trim ring 8 and consolidates fixing.
The number of hanger 9 is 4, is welded on card and hangs up on the overhanging boss 8-1 of trim ring 8.
In use, as shown in fig. 6, central throat tube 10 is put into distributing device 18 fixed.
When needing to change central throat tube 10, the maintenance door of lower sealing valve 17 is first turned on, distributor chute maintenance door is opened, 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, and the expansion ripple being located above central throat tube is taken out from the maintenance door of lower sealing valve 17
Abrasion-proof backing block 13 (signal arrow step A) in pipe 12, abrasion-proof backing block 13 herein is not to belong to central throat tube, and swollen
What swollen bellows 12 was carried, 11 two chain slings of chain hoist are hung on 10 axisymmetric 2 hangers 9 of central throat tube, somewhat
Lift central throat tube 10, now the remaining part in addition to card hangs lower clamping ring 1 is all raised；Central throat tube 10 is horizontally rotated 30 °
And reducing chain sling so that the overhanging boss 8-1 that card hangs up trim ring 8 can be hung in lower clamping ring 1 to stretch by card and be formed between boss 1-1
Groove, central throat tube 10 is decreased until from distributing device 18 by the uni-drive gear box of blast furnace and reached close to distributor chute 14
(signal arrow step B), is observed by burner maintenance door.Central throat tube 10 need not be lifted to lower sealing valve 17 by being so designed that
At maintenance door, directly central throat tube 10 can be dropped to close at distributor chute 14 without the upper trim ring of cutting；Examined using burner
Repair another chain hoist (the outer chain hoist 15 of burner maintenance door) in the outside of door 16, the outer chain type lifting of the burner maintenance door
The pipe hook of fixing band 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
The chain sling of chain hoist 11 and the chain sling for shortening the outer chain hoist 15 of burner maintenance door, burner maintenance is pulled to by central throat tube 10
Door, until two chain slings of chain hoist 15 outside burner maintenance door can be hooked on two other axial symmetry hanger 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 the burner maintenance outside burner outdoors
15 two chain slings of chain hoist draw central throat tube, until central throat tube is located at outside (the signal arrow D steps of burner maintenance door 16
Suddenly), the chain sling of the top chain hoist 11 hung on hanger 9 is now removed, the outer chain hoist of burner maintenance door is recycled
15 hang central throat tube 10 from burner maintenance door.The handing-over of 2 groups of 4 hangers is used so that Renewal process safety coefficient is higher,
It is more easy.
The central throat tube of blast furnace roof of the present invention, it is simple in construction, repair and replacement are easily facilitated, are used manpower and material resources sparingly,
Safety coefficient is high.
Claims (6)
1. a kind of central throat tube of blast furnace roof, mainly including outer cylinder body, support set and abrasion-proof backing block, it is characterised in that：Institute
State abrasion-proof backing block and be divided into the first abrasion-proof backing block, the second abrasion-proof backing block, the 3rd abrasion-proof backing block, three kinds of abrasion-proof backing blocks are cannular boss
Shape cylinder and be that major diameter one end is set upward；Stack multiple support sets in outer cylinder body successively from the bottom to top, multiple three is resistance to
It is overlapping above and below mill lining plate to be fixed in support set, in addition to the card of mutual cooperation hangs lower clamping ring and card and hangs up trim ring, first is wear-resisting
Liner plate and the second abrasion-proof backing block are from top to bottom stacked and upper limb is all fixed on card and hung up on trim ring；Card hangs up the setting of trim ring outer rim
The multiple overhanging boss stretched out toward center of circle opposite direction, multiple circumferentially spaced distributions of overhanging boss；Card hangs lower clamping ring edge
Circumferencial direction stretches boss toward direction on the inside of the center of circle is uniformly interior, and card hangs lower clamping ring and card hangs up both trim rings boss number and cloth angle setting
Degree is consistent so that card hangs lower clamping ring and card hangs up trim ring and can mutually fixed by boss；And card hangs up the overhanging boss of trim ring
The groove gap between the two neighboring boss of lower clamping ring can be hung through card；Card is hung up sets hanger on the overhanging boss of trim ring, altogether
Meter sets at least four hangers.
2. the central throat tube of blast furnace roof according to claim 1, it is characterised in that：
Card extension lower clamping ring and card hang up trim ring diameter dimension and are： Enable card to hang lower clamping ring and card hangs up trim ring and passes through boss phase
Mutually fix；And it is that the groove clearance angle α between respective two neighboring boss is more than that card extension lower clamping ring and card, which hang up trim ring both of which,
The angle beta of boss itself so that card hangs up the overhanging boss of trim ring can hang the groove between the two neighboring boss of lower clamping ring through card
Gap.
3. the central throat tube of blast furnace roof according to claim 1, it is characterised in that：
The upright projection that card hangs up both trim ring and hanger is included in outer cylinder body so that card hangs up trim ring and outer cylinder body inner part
Constitute central throat tube body.
4. the central throat tube of blast furnace roof according to claim 1, it is characterised in that：
Card hang lower clamping ring be fixed on distributing device it is suitable for reading on, central throat tube trunnion body is put into distributing device and distributor chute phase
It is right so that card hangs lower clamping ring and card hangs up trim ring and can mutually fixed by boss.
5. the central throat tube of blast furnace roof according to claim 1, it is characterised in that：
Multiple 3rd abrasion-proof backing blocks are overlapping to be welded in support set, and rear spot welding is fixed with bayonet lock with hole is made in circumferencial direction.
6. the replacing options of the central throat tube of the blast furnace roof according to one of claim 1-5, it is characterised in that：
When needing to change 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 abrasion-proof backing block in the expansion bellows being located above central throat tube body；By two chain slings of chain hoist at the top of batch can
Hang on axisymmetric 2 hangers of central throat tube body, somewhat lift central throat tube body, now in addition to card hangs lower clamping ring
Central throat tube body is all raised；
Central throat tube body is horizontally rotated into set angle and chain sling is reduced so that the overhanging boss that card hangs up trim ring is hung by card
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 body from distributing device
It is decreased until and reaches close to distributor chute, is observed 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 body 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 into two other
On axial symmetry hanger；Two chain slings of chain hoist at the top of batch can are unclamped, risen with chain type outside the burner maintenance door outside burner
Two chains of heavy-duty machine draw central throat tube, until central throat tube is located at the outside of burner maintenance door, now remove the material hung on hanger
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 hangers handing-over using once.
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 |
|---|---|
| CN107058657A true CN107058657A (en) | 2017-08-18 |
| CN107058657B CN107058657B (en) | 2019-04-19 |
Family
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Family Applications (1)
| 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) |
Cited By (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 |
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|---|---|---|---|---|
| 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 |
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2017
- 2017-06-19 CN CN201710463652.2A patent/CN107058657B/en active Active
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|---|---|---|---|---|
| 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 |
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| 芦涛: "PW炉顶系统（并罐）中心喉管快速更换方法研究", 《企业技术开发》 * |
Cited By (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 |
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| Publication number | Publication date |
|---|---|
| CN107058657B (en) | 2019-04-19 |
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