CN105755211B - A kind of RH vacuum slot devices - Google Patents
A kind of RH vacuum slot devices Download PDFInfo
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- CN105755211B CN105755211B CN201610253607.XA CN201610253607A CN105755211B CN 105755211 B CN105755211 B CN 105755211B CN 201610253607 A CN201610253607 A CN 201610253607A CN 105755211 B CN105755211 B CN 105755211B
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- tank body
- vacuum tank
- vacuum
- splashproof cover
- blanking funnel
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- 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention provides a kind of RH vacuum slot devices, including vacuum tank body, the inner chamber of vacuum tank body is installed with the Splashproof cover of taper, the top of Splashproof cover offers through hole, the inner chamber of vacuum tank body is further fixed on blanking funnel, and the bottom of blanking funnel offers through hole, alloy chute is connected with the outer wall of vacuum tank body, alloy chute is located at the top of blanking funnel, and is connected with the inner chamber of vacuum tank body.This RH vacuum slot devices provided by the invention, prevent molten steel from splashing by setting up Splashproof cover, help avoid molten steel splashing, cause the damage of follow-up air-extractor, and the height of vacuum tank body is further greatly reduced, by setting up blanking funnel, impact when helping to reduce addition alloy slag charge to vacuum cell wall, further improve the service life of vacuum tank body, the present invention helps to reduce the height of RH vacuum tanks and its corollary equipment, manufacturing cost is reduced, RH refining plants integral device absolute altitude is further reduced, reduces cost of investment.
Description
Technical field
The invention belongs to RH furnace outer refining technologies field, and in particular to a kind of RH vacuum slot devices.
Background technology
At present, RH refining furnaces are the Main Means of molten steel vacuum refining, and at home and abroad iron and steel enterprise is widely used.So
And RH refining plants crane rail level absolute altitude is too high in the design and application process of reality, cause its construction cost too high, construct
Difficulty is big, especially old plant area's transformation project.So the RH refining plants design for seeking low rail level absolute altitude is external refining design
One of the problem of person pays close attention to always.
Under vacuum during RH vacuum refinings molten steel splash height, depending on the deoxidation situation of molten steel, typically about 6 ~
10m.In order to avoid the splashing of molten steel during refining, the damage of follow-up air-extractor is caused, vacuum groove height is typically designed and takes 8m left
It is right.It key device of the vacuum tank as RH refining furnaces, its own height, will determine that auxiliary facility absolute altitude is integrally increased, be RH essences
Refine one of the main reason for workshop rail level absolute altitude is too high.
It can be seen that as long as molten steel splash can be controlled effectively, vacuum groove height is reduced, it becomes possible to substantially reduce itself of RH stoves
Highly.
The content of the invention
The purpose of the present invention is to cause RH refining plants rail level absolute altitude too high for vacuum tank excessive height, causes to be built into
This height, difficulty of construction it is big the problem of.
Therefore, the invention provides a kind of RH vacuum slot devices, including vacuum tank body, the top of vacuum tank body connects
Lead to hot-bending pipe, top gun passage is offered on hot-bending pipe, the bottom of vacuum tank body is dip pipe, and the inner chamber of vacuum tank body is consolidated
Dingan County is equipped with the Splashproof cover of taper, and the bottom of Splashproof cover is circumferentially welded on the inwall of vacuum tank body, and top center opens up
There is through hole, the central axis of the through hole overlaps with the center line axis of top gun passage；
The inner chamber of the vacuum tank body is further fixed on blanking funnel, and blanking funnel is located at the top of Splashproof cover, blanking leakage
The top of bucket is circumferentially welded on the inwall of vacuum tank body, and bottom center offers through hole, the through hole and Splashproof cover top
Through hole it is coaxial and diameter is identical, the bottom of blanking funnel and the top of Splashproof cover are welded to connect；
Alloy chute is connected with the outer wall of vacuum tank body, alloy chute is located at the top of blanking funnel, and and vacuum
The inner chamber connection of groove body.
The bottom of the Splashproof cover is reserved head room apart from the height of vacuum tank body bottom plate, reserves head room
For 1~3m.
The lower surface of the Splashproof cover and the angle of vertical direction are 30 °~45 °.
The lower surface of the blanking funnel and the angle of horizontal direction are 30 °~45 °.
The lower surface of the Splashproof cover is curved surface.
The lower surface of the Splashproof cover is hemispherical.
The Splashproof cover is made of refractory material.
The blanking funnel is made of wear-resisting steel plate.
Beneficial effects of the present invention：This RH vacuum slot devices provided by the invention, steel is prevented by setting up Splashproof cover
Liquid splashes, and helps avoid molten steel splashing, causes the damage of follow-up air-extractor, and vacuum tank body is further greatly reduced
Highly, by setting up blanking funnel, impact when helping to reduce addition alloy slag charge to vacuum cell wall, vacuum is further improved
The service life of groove body, the present invention help to reduce the height of RH vacuum tanks and its corollary equipment, reduce manufacturing cost, enter one
Step reduces RH refining plants integral device absolute altitude, reduces cost of investment, and many convenience are brought to manufacture and application.
The present invention is described in further details below with reference to accompanying drawing.
Brief description of the drawings
Fig. 1 is structural representations of the RH with vacuum slot device.
Description of reference numerals：1st, dip pipe；2nd, vacuum tank body；3rd, hot-bending pipe；4th, top gun passage；5th, alloy chute；6、
Splashproof cover；7th, blanking funnel.
Embodiment
Embodiment 1：
Cause RH refining plants rail level absolute altitude too high to solve vacuum tank excessive height, cause construction cost height, construction
Difficulty it is big the problem of, present embodiments provide a kind of RH vacuum slot devices as shown in Figure 1, including vacuum tank body 2, very
The top of dead slot body 2 connects hot-bending pipe 3, top gun passage 4 is offered on hot-bending pipe 3, the bottom of vacuum tank body 2 is dipping
Pipe 1, the inner chamber of vacuum tank body 2 are installed with the Splashproof cover 6 of taper, and the bottom of Splashproof cover 6 is circumferentially welded on vacuum tank
On the inwall of body 2, top center offers through hole, and the central axis of the through hole overlaps with the center line axis of top gun passage 4；
The inner chamber of the vacuum tank body 2 is further fixed on blanking funnel 7, and blanking funnel 7 is located at the top of Splashproof cover 6, under
The top of funnel 7 is circumferentially welded on the inwall of vacuum tank body 2, and bottom, which opens up center, through hole, the through hole and splashproof
The through hole of the bottom of lid 6 is coaxial and diameter is identical, and the bottom and the top of Splashproof cover 6 of blanking funnel 7 are welded to connect；
It is connected with alloy chute 5 on the outer wall of vacuum tank body 2, alloy chute 5 is located at the top of blanking funnel 7, and with
The inner chamber connection of vacuum tank body 2.
The present embodiment provide RH be with the course of work of vacuum slot device：
Under vacuum, molten steel enters in vacuum tank body 2, and the molten steel of splashing is blocked by Splashproof cover 6, adds alloy
When, alloy slag charge can be entered in vacuum tank body 2 by alloy chute 5, and by the buffering of blanking funnel 7, into molten steel, be had
Help reduce impact of the alloy slag charge to the inwall of vacuum tank body 2, extend the service life of vacuum tank body 2；Need to carry out oxygen blast
When refining or slagging operation, top gun first passes through top gun passage 4, right then by blanking funnel 7 and the central through hole of Splashproof cover 6
Molten steel carries out oxygen blast refining or slagging operation.
This RH vacuum slot devices provided by the invention, prevent molten steel from splashing, help avoid by setting up Splashproof cover
Molten steel splashes, and causes the damage of follow-up air-extractor, and the height of vacuum tank body is further greatly reduced, by setting up blanking
Funnel, the service life of impact when helping to reduce addition alloy slag charge to vacuum cell wall, further raising vacuum tank body,
The present invention helps to reduce the height of RH vacuum tanks and its corollary equipment, reduces manufacturing cost, further reduces RH refining plants
Integral device absolute altitude, cost of investment is reduced, many convenience are brought to manufacture and application.
Embodiment 2：
Present embodiments provide a kind of RH vacuum slot devices as shown in Figure 1, including vacuum tank body 2, vacuum tank sheet
The top of body 2 connects hot-bending pipe 3, top gun passage 4 is offered on hot-bending pipe 3, the bottom of vacuum tank body 2 is dip pipe 1, very
The inner chamber of dead slot body 2 is installed with the Splashproof cover 6 of taper, and the bottom of Splashproof cover 6 is circumferentially welded on vacuum tank body 2
On inwall, top offers through hole, and the central axis of the through hole overlaps with the center line axis of top gun passage 4；
The inner chamber of the vacuum tank body 2 is further fixed on blanking funnel 7, and the top of blanking funnel 7 is circumferentially welded on very
On the inwall of dead slot body 2, bottom offers through hole, and the through hole is identical with the through hole shaft diameter of the bottom of Splashproof cover 6, blanking leakage
The bottom and the bottom of Splashproof cover 6 of bucket 7 are welded to connect；
It is connected with alloy chute 5 on the outer wall of vacuum tank body 2, alloy chute 5 is located at the top of blanking funnel 7, and with
The inner chamber connection of vacuum tank body 2.
The bottom of the Splashproof cover 6 is reserved head room apart from the height of the bottom plate of vacuum tank body 2, reserves free height
Spend for 1~3m.
In actual design, using vacuum in vacuum tank body 2 as 67Pa, the maximum height about 500m of molten steel is foundation,
When preventing molten steel splashing using Splashproof cover 6, drawn by test of many times, reserve head room in 1~3m, be optimum height,
And RH refining plants integral device absolute altitude is reduced, reduce cost of investment.
Embodiment 3：
Present embodiments provide a kind of RH vacuum slot devices as shown in Figure 1, including vacuum tank body 2, vacuum tank sheet
The top of body 2 connects hot-bending pipe 3, top gun passage 4 is offered on hot-bending pipe 3, the bottom of vacuum tank body 2 is dip pipe 1, very
The inner chamber of dead slot body 2 is installed with the Splashproof cover 6 of taper, and the bottom of Splashproof cover 6 is circumferentially welded on vacuum tank body 2
On inwall, top offers through hole, and the central axis of the through hole overlaps with the center line axis of top gun passage 4；
The inner chamber of the vacuum tank body 2 is further fixed on blanking funnel 7, and the top of blanking funnel 7 is circumferentially welded on very
On the inwall of dead slot body 2, bottom offers through hole, and the through hole is identical with the through hole shaft diameter of the bottom of Splashproof cover 6, blanking leakage
The bottom and the bottom of Splashproof cover 6 of bucket 7 are welded to connect；
It is connected with alloy chute 5 on the outer wall of vacuum tank body 2, alloy chute 5 is located at the top of blanking funnel 7, and with
The inner chamber connection of vacuum tank body 2.
The lower surface of the Splashproof cover 6 and the angle of vertical direction are 30 °~45 °.
In actual design, using vacuum in vacuum tank body 2 as 67Pa, the maximum height about 500m of molten steel is foundation,
When preventing molten steel splashing using Splashproof cover 6, Splashproof cover taper is unsuitable excessive, draws, preferably 45 °, can drop by test of many times
Low RH refining plants integral device absolute altitude.
Embodiment 4：
Present embodiments provide a kind of RH vacuum slot devices as shown in Figure 1, including vacuum tank body 2, vacuum tank sheet
The top of body 2 connects hot-bending pipe 3, top gun passage 4 is offered on hot-bending pipe 3, the bottom of vacuum tank body 2 is dip pipe 1, very
The inner chamber of dead slot body 2 is installed with the Splashproof cover 6 of taper, and the bottom of Splashproof cover 6 is circumferentially welded on vacuum tank body 2
On inwall, top offers through hole, and the central axis of the through hole overlaps with the center line axis of top gun passage 4；
The inner chamber of the vacuum tank body 2 is further fixed on blanking funnel 7, and the top of blanking funnel 7 is circumferentially welded on very
On the inwall of dead slot body 2, bottom offers through hole, and the through hole is identical with the through hole shaft diameter of the bottom of Splashproof cover 6, blanking leakage
The bottom and the bottom of Splashproof cover 6 of bucket 7 are welded to connect；
It is connected with alloy chute 5 on the outer wall of vacuum tank body 2, alloy chute 5 is located at the top of blanking funnel 7, and with
The inner chamber connection of vacuum tank body 2.
The lower surface of the blanking funnel 7 and the angle of horizontal direction are 30 °~45 °.
In actual design, using vacuum in vacuum tank body 2 as 67Pa, the maximum height about 500m of molten steel is foundation,
Charging hopper is installed in vacuum tank, about 45 ° of its taper is advisable, and such vacuum tank whole height at least reduces about 25%.
Embodiment 5：
Present embodiments provide a kind of RH vacuum slot devices as shown in Figure 1, including vacuum tank body 2, vacuum tank sheet
The top of body 2 connects hot-bending pipe 3, top gun passage 4 is offered on hot-bending pipe 3, the bottom of vacuum tank body 2 is dip pipe 1, very
The inner chamber of dead slot body 2 is installed with the Splashproof cover 6 of taper, and the bottom of Splashproof cover 6 is circumferentially welded on vacuum tank body 2
On inwall, top offers through hole, and the central axis of the through hole overlaps with the center line axis of top gun passage 4；
The inner chamber of the vacuum tank body 2 is further fixed on blanking funnel 7, and the top of blanking funnel 7 is circumferentially welded on very
On the inwall of dead slot body 2, bottom offers through hole, and the through hole is identical with the through hole shaft diameter of the bottom of Splashproof cover 6, blanking leakage
The bottom and the bottom of Splashproof cover 6 of bucket 7 are welded to connect；
It is connected with alloy chute 5 on the outer wall of vacuum tank body 2, alloy chute 5 is located at the top of blanking funnel 7, and with
The inner chamber connection of vacuum tank body 2.
The lower surface of the Splashproof cover 6 is curved surface.
The effect of Splashproof cover 6 is to prevent from avoiding the splashing of molten steel, causes the damage of follow-up air-extractor, under Splashproof cover 6
Surface is the design of curved surface, can make molten steel when being contacted with lower surface, rapid to slide, it is necessary to illustrate, under Splashproof cover 6
Surface can also be smooth structure.
Embodiment 6：
On the basis of embodiment 5, the lower surface of the Splashproof cover 6 is hemispherical, and molten steel can be made to be connect with lower surface
It is rapid to slide when touching, also reduce the splashing height of molten steel.
Embodiment 7：
Present embodiments provide a kind of RH vacuum slot devices as shown in Figure 1, including vacuum tank body 2, vacuum tank sheet
The top of body 2 connects hot-bending pipe 3, top gun passage 4 is offered on hot-bending pipe 3, the bottom of vacuum tank body 2 is dip pipe 1, very
The inner chamber of dead slot body 2 is installed with the Splashproof cover 6 of taper, and the bottom of Splashproof cover 6 is circumferentially welded on vacuum tank body 2
On inwall, top offers through hole, and the central axis of the through hole overlaps with the center line axis of top gun passage 4；
The inner chamber of the vacuum tank body 2 is further fixed on blanking funnel 7, and the top of blanking funnel 7 is circumferentially welded on very
On the inwall of dead slot body 2, bottom offers through hole, and the through hole is identical with the through hole shaft diameter of the bottom of Splashproof cover 6, blanking leakage
The bottom and the bottom of Splashproof cover 6 of bucket 7 are welded to connect；
It is connected with alloy chute 5 on the outer wall of vacuum tank body 2, alloy chute 5 is located at the top of blanking funnel 7, and with
The inner chamber connection of vacuum tank body 2.
The Splashproof cover 6 is made of refractory material, and Splashproof cover 6 can also be water-cooling structure, help to prevent molten steel from flying
Splash.Due to the extreme temperatures of molten steel, in general material can not bear high temperature, and Splashproof cover 6 can extend it from refractory material to be made
Use the life-span.
Embodiment 8：
Present embodiments provide a kind of RH vacuum slot devices as shown in Figure 1, including vacuum tank body 2, vacuum tank sheet
The top of body 2 connects hot-bending pipe 3, top gun passage 4 is offered on hot-bending pipe 3, the bottom of vacuum tank body 2 is dip pipe 1, very
The inner chamber of dead slot body 2 is installed with the Splashproof cover 6 of taper, and the bottom of Splashproof cover 6 is circumferentially welded on vacuum tank body 2
On inwall, top offers through hole, and the central axis of the through hole overlaps with the center line axis of top gun passage 4；
The inner chamber of the vacuum tank body 2 is further fixed on blanking funnel 7, and the top of blanking funnel 7 is circumferentially welded on very
On the inwall of dead slot body 2, bottom offers through hole, and the through hole is identical with the through hole shaft diameter of the bottom of Splashproof cover 6, blanking leakage
The bottom and the bottom of Splashproof cover 6 of bucket 7 are welded to connect；
It is connected with alloy chute 5 on the outer wall of vacuum tank body 2, alloy chute 5 is located at the top of blanking funnel 7, and with
The inner chamber connection of vacuum tank body 2.
The blanking funnel 7 is made of wear-resisting steel plate.Due to alloy slag charge need to along blanking funnel 7 descending, Fe alloy slag
Material has very big friction with the upper surface of blanking funnel 7, thus need to select high-abrasive material with ensure the life-span of blanking funnel 7 and
Normal use, in the present embodiment, preferred wear-resisting steel plate.
This RH vacuum slot devices provided by the invention, prevent molten steel from splashing, help avoid by setting up Splashproof cover
Molten steel splashes, and causes the damage of follow-up air-extractor, and the height of vacuum tank body is further greatly reduced, by setting up blanking
Funnel, the service life of impact when helping to reduce addition alloy slag charge to vacuum cell wall, further raising vacuum tank body,
The present invention helps to reduce the height of RH vacuum tanks and its corollary equipment, reduces manufacturing cost, further reduces RH refining plants
Integral device absolute altitude, cost of investment is reduced, many convenience are brought to manufacture and application.
It is exemplified as above be only to the present invention for example, do not form the limitation to protection scope of the present invention, it is all
It is to be belonged to the same or analogous design of the present invention within protection scope of the present invention.The portion that the present embodiment does not describe in detail
The well-known components and common structure or conventional means of part and the structure category industry, are not described one by one here.
Claims (8)
1. a kind of RH vacuum slot devices, including vacuum tank body（2）, vacuum tank body（2）Top connect hot-bending pipe
（3）, hot-bending pipe（3）On offer top gun passage（4）, vacuum tank body（2）Bottom be dip pipe（1）, it is characterised in that：Very
Dead slot body（2）Inner chamber be installed with the Splashproof cover of taper（6）, Splashproof cover（6）Bottom be circumferentially welded on vacuum tank
Body（2）Inwall on, top center offers through hole, the central axis of the through hole and top gun passage（4）Center line axis weight
Close；
The vacuum tank body（2）Inner chamber be further fixed on blanking funnel（7）, blanking funnel（7）Positioned at Splashproof cover（6）It is upper
Side, blanking funnel（7）Top be circumferentially welded on vacuum tank body（2）Inwall on, bottom center offers through hole, and this is logical
Hole and Splashproof cover（6）The through hole on top is coaxial and diameter is identical, blanking funnel（7）Bottom and Splashproof cover（6）Top welding
Connection；
Vacuum tank body（2）Outer wall on be connected with alloy chute（5）, alloy chute（5）Positioned at blanking funnel（7）Top,
And with vacuum tank body（2）Inner chamber connection.
2. RH as claimed in claim 1 vacuum slot devices, it is characterised in that：The Splashproof cover（6）Bottom distance it is true
Dead slot body（2）The height of bottom plate is reserved head room, and it is 1~3m to reserve head room.
3. RH as claimed in claim 1 vacuum slot devices, it is characterised in that：The Splashproof cover（6）Lower surface with it is vertical
The angle in direction is 30 °~45 °.
4. RH as claimed in claim 1 vacuum slot devices, it is characterised in that：The blanking funnel（7）Lower surface and water
Square to angle be 30 °~45 °.
5. RH as claimed in claim 1 vacuum slot devices, it is characterised in that：The Splashproof cover（6）Lower surface be curved surface.
6. RH as claimed in claim 5 vacuum slot devices, it is characterised in that：The Splashproof cover（6）Lower surface be hemisphere
Shape.
7. RH as claimed in claim 1 vacuum slot devices, it is characterised in that：The Splashproof cover（6）Using refractory material system
Into.
8. RH as claimed in claim 2 vacuum slot devices, it is characterised in that：The blanking funnel（7）Using wear-resisting steel plate
It is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610253607.XA CN105755211B (en) | 2016-04-22 | 2016-04-22 | A kind of RH vacuum slot devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610253607.XA CN105755211B (en) | 2016-04-22 | 2016-04-22 | A kind of RH vacuum slot devices |
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| Publication Number | Publication Date |
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| CN105755211A CN105755211A (en) | 2016-07-13 |
| CN105755211B true CN105755211B (en) | 2017-12-26 |
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ID=56324759
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610253607.XA Active CN105755211B (en) | 2016-04-22 | 2016-04-22 | A kind of RH vacuum slot devices |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019173064A (en) * | 2018-03-27 | 2019-10-10 | 日本製鉄株式会社 | Vacuum degassing device |
| CN108866277B (en) * | 2018-08-27 | 2023-10-17 | 北京科技大学 | Single-nozzle refining furnace and refining process for smelting ultra-low carbon stainless steel |
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| CN202808868U (en) * | 2012-07-20 | 2013-03-20 | 宝钢不锈钢有限公司 | RH vacuum refined hot-bent pipe |
| CN103184316A (en) * | 2013-04-15 | 2013-07-03 | 中国重型机械研究院股份公司 | Novel vacuum tank device and method |
| CN203065512U (en) * | 2013-01-08 | 2013-07-17 | 宝山钢铁股份有限公司 | RH vacuum tank device |
| CN203229549U (en) * | 2013-04-15 | 2013-10-09 | 中国重型机械研究院股份公司 | Novel vacuum tank device |
| CN205576205U (en) * | 2016-04-22 | 2016-09-14 | 中国重型机械研究院股份公司 | Vacuum tank structure for RH |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100879739B1 (en) * | 2007-11-06 | 2009-01-20 | 주식회사 포스코 | Vaccum degassing apparatus and method for vaccum degassing using the same |
| JP5487606B2 (en) * | 2008-12-05 | 2014-05-07 | Ｊｆｅスチール株式会社 | Method for suppressing adhesion of metal to the RH vacuum degassing tank canopy |
| JP5983270B2 (en) * | 2012-10-04 | 2016-08-31 | 新日鐵住金株式会社 | Canopy for vacuum degassing tank |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202808868U (en) * | 2012-07-20 | 2013-03-20 | 宝钢不锈钢有限公司 | RH vacuum refined hot-bent pipe |
| CN203065512U (en) * | 2013-01-08 | 2013-07-17 | 宝山钢铁股份有限公司 | RH vacuum tank device |
| CN103184316A (en) * | 2013-04-15 | 2013-07-03 | 中国重型机械研究院股份公司 | Novel vacuum tank device and method |
| CN203229549U (en) * | 2013-04-15 | 2013-10-09 | 中国重型机械研究院股份公司 | Novel vacuum tank device |
| CN205576205U (en) * | 2016-04-22 | 2016-09-14 | 中国重型机械研究院股份公司 | Vacuum tank structure for RH |
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| CN105755211A (en) | 2016-07-13 |
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