CN207760365U - Central throat tube component - Google Patents
Central throat tube component Download PDFInfo
- Publication number
- CN207760365U CN207760365U CN201721667669.1U CN201721667669U CN207760365U CN 207760365 U CN207760365 U CN 207760365U CN 201721667669 U CN201721667669 U CN 201721667669U CN 207760365 U CN207760365 U CN 207760365U
- Authority
- CN
- China
- Prior art keywords
- trunnion
- primary venturi
- furnace
- tube component
- utility
- 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.)
- Withdrawn - After Issue
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- Blast Furnaces (AREA)
Abstract
The utility model proposes a kind of central throat tube components, are used for blast furnace, including：Primary venturi is fixed on blast-furnace distributor；Secondary trunnion, coaxial sleeve are set in primary venturi.By the technical solution of the utility model, stream has effectively been fettered, has reduced the possibility of furnace charge snake, has reduced the difficulty of control air-flow, has reduced the possibility of the warm promotion in top, extends the service life of distributing device, also reduce the possibility that furnace charge is thrown away from chute side wall.
Description
Technical field
The utility model is related to blast-furnace technique fields, in particular to a kind of central throat tube component.
Background technology
Large blast furnace has throat diameter big, the more difficult feature of furnace throat charge level control.And the center larynx of current DN750
For pipe during distributing device, furnace charge snake is more serious, and it is uneven to cause furnace throat charge level cloth, has both increased technology controlling and process gas
The difficulty of stream, and cause fraction using bad causes to push up temperature increasing or even endangering the distributing device service life.In addition, former trunnion
During cloth, the phenomenon that a large amount of furnace charges are thrown away from chute side wall is had, causes cloth chaotic, operating difficulties.
Utility model content
The utility model aims to solve at least one of technical problems existing in the prior art or related technologies.
In view of this, the purpose of this utility model is to provide a kind of central throat tube component, to shrink stream, furnace charge is reduced
The possibility of snake and possibility to chute sides flash.
To achieve the goals above, the technical solution of the utility model provides a kind of central throat tube component, is used for blast furnace,
Including：Primary venturi is fixed on blast-furnace distributor；Secondary trunnion, coaxial sleeve are set in primary venturi.
By being coaxially arranged a secondary trunnion in primary venturi, make furnace charge that can only enter blast-furnace distributor from secondary trunnion, from
And feeding-passage is reduced, and then stream is fettered, reduced the possibility of furnace charge snake, reducing that furnace charge cloth is non-uniform can
Can, the difficulty of control air-flow is reduced, reduces the possibility of the warm promotion in top, extends the service life of distributing device.And due to charging
Channel reduces, and furnace charge concentrates on trunnion center, it is easier to be directed at chute center, reduce what furnace charge was thrown away from chute side wall
May, simplify operation.
Further, secondary trunnion includes：Stop flange is set to outside primary venturi, is fixedly connected with one end of secondary trunnion, limits
The outer diameter of flange is more than the internal diameter of primary venturi, the unidirectional movement with the secondary trunnion of limitation relative to primary venturi in an axial direction.
Further, secondary trunnion further includes：Wearing layer, is set to secondary trunnion inner wall, and thickness range is 15~20mm.
Further, secondary throat inner radius is 630~650mm.
The additional aspect and advantage of the utility model will become apparent in following description section, or new by this practicality
The practice of type is recognized.
Description of the drawings
Fig. 1 shows the sectional view of embodiment according to the present utility model.
Wherein, the correspondence in Fig. 1 between reference numeral and component names is：
10 primary venturis, 12 stop flanges, 14 secondary trunnions.
Specific implementation mode
In order to be more clearly understood that the above objects, features, and advantages of the utility model, below in conjunction with the accompanying drawings and have
The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen
The feature in embodiment and embodiment please can be combined with each other.
Many details are elaborated in the following description in order to fully understand the utility model, still, this practicality
Novel to be implemented different from other modes described here using other, therefore, the scope of protection of the utility model is simultaneously
It is not limited by following public specific embodiment.
Some embodiments according to the present utility model are described referring to Fig. 1.
As shown in Figure 1, the central throat tube component of one embodiment according to the present utility model, including：It is fixed on blast furnace cloth
Primary venturi 10 and coaxial sleeve on glassware are set to the secondary trunnion 14 in primary venturi 10, and the upper end of secondary trunnion 14 is welded with limit
Flange 12, stop flange 12 is outside primary venturi 10 and its outer diameter is more than the internal diameter of primary venturi 10.
By being coaxially arranged a secondary trunnion 14 in primary venturi 10, make furnace charge that can only enter blast furnace material distribution from secondary trunnion 14
Device to reduce feeding-passage, and then has fettered stream, reduces the possibility of furnace charge snake, and it is uneven to reduce furnace charge cloth
Even possibility reduces the difficulty of control air-flow, reduces the possibility of the warm promotion in top, extends the service life of distributing device.And by
It is reduced in feeding-passage, furnace charge concentrates on trunnion center, it is easier to be directed at chute center, reduce furnace charge from chute side wall
It throws away and the possibility of flash, spreading, reduces the confusion of cloth, simplify operation.
By welding a stop flange 12 on secondary trunnion 14, and the outer diameter of stop flange 12 is more than the interior of primary venturi 10
Diameter, when installation, it is only necessary to sink to one end of 14 no stop flange 12 of secondary trunnion in primary venturi 10, in the limit of stop flange 12
The lower installation that secondary trunnion 14 can be rapidly completed of effect, simplifies installation process, improves installation speed, reduce primary venturi
The possibility reequiped after 10 dismountings, greatly reduces cost, improves efficiency.
It should also be noted that, central throat tube component through this embodiment only needs letter in secondary 14 serious wear of trunnion
Single sinks to secondary trunnion 14 new secondary trunnion 14 using crane after being hung out in primary venturi 10, is not necessarily to complicated dismounting,
Replacement, maintenance efficiency are improved, maintenance cost is saved.
Using the particular technique effect after central throat tube component, following table may refer to：
It can be seen that by upper table, after central throat tube is changed to central throat tube component, the uniformity of charge level is improved, coal gas
Utilization rate fluctuation obviously becomes smaller, and average gas utilization rate improves.In addition, the fluctuating range and mean temperature of furnace roof central point temperature
It is substantially reduced.
Further, primary venturi 10 is made of wear-resisting steel plate, to improve wear-resisting property；Secondary trunnion 14 further includes in secondary larynx
Wearing layer on 14 inner wall of pipe, using hard alloy overlay welding or installation wear sleeve, thickness range is 15~20mm, to improve pair
The wear-resisting property of trunnion 14 extends the service life of secondary trunnion 14.
Further, 14 internal diameter of secondary trunnion is 630~650mm, and preferably internal diameter is 650mm, to promote central throat tube component
To the constraint ability of furnace charge, the segregation of furnace charge is reduced.
The technical solution of the utility model is described in detail above in association with attached drawing, by the technical solution of the utility model,
Stream effectively has been fettered, has reduced the possibility of furnace charge snake, has reduced the difficulty of control air-flow, reduce the warm promotion in top can
Can, the service life of distributing device is extended, the possibility that furnace charge is thrown away from chute side wall is also reduced.
In the present invention, term " first ", " second ", " third " are only used for the purpose of description, and should not be understood as
Instruction implies relative importance；Term " multiple " then refers to two or more, unless otherwise restricted clearly.Term " peace
The terms such as dress ", " connected ", " connection ", " fixation " shall be understood in a broad sense, for example, " connection " may be a fixed connection, it can also
It is to be detachably connected, or be integrally connected；" connected " can be directly connected, can also be indirectly connected through an intermediary.It is right
For those skilled in the art, it can understand that above-mentioned term in the present invention specific contains as the case may be
Justice.
In the description of the utility model, it is to be understood that the fingers such as term "upper", "lower", "left", "right", "front", "rear"
The orientation or positional relationship shown be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the utility model and
Simplify description, specific direction must be had, with specific azimuth configuration by not indicating or implying the indicated device or unit
And operation, it is thus impossible to be construed as a limitation of the present invention.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least the one of the utility model
In a embodiment or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment
Or example.Moreover, the particular features, structures, materials, or characteristics of description can be in any one or more embodiments or example
In can be combined in any suitable manner.
The preferred embodiment that these are only the utility model, is not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (4)
1. a kind of central throat tube component is used for blast furnace, which is characterized in that including：
Primary venturi is fixed on the blast-furnace distributor；
Secondary trunnion, coaxial sleeve are set in the primary venturi.
2. central throat tube component according to claim 1, which is characterized in that it is described pair trunnion include：
Stop flange is set to outside the primary venturi, is fixedly connected with one end of the secondary trunnion, the outer diameter of the stop flange is big
In the internal diameter of the primary venturi, to limit unidirectional movement of the secondary trunnion relative to the primary venturi in an axial direction.
3. central throat tube component according to claim 2, which is characterized in that it is described pair trunnion further include：
Wearing layer, is set to the secondary trunnion inner wall, and thickness range is 15~20mm.
4. central throat tube component according to claim 3, which is characterized in that the pair throat inner radius is 630~650mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721667669.1U CN207760365U (en) | 2017-12-05 | 2017-12-05 | Central throat tube component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721667669.1U CN207760365U (en) | 2017-12-05 | 2017-12-05 | Central throat tube component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207760365U true CN207760365U (en) | 2018-08-24 |
Family
ID=63189379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721667669.1U Withdrawn - After Issue CN207760365U (en) | 2017-12-05 | 2017-12-05 | Central throat tube component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207760365U (en) |
-
2017
- 2017-12-05 CN CN201721667669.1U patent/CN207760365U/en not_active Withdrawn - After Issue
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200327 Address after: 014015 new system office building in burhantu Town, Kundulun District, Baotou City, Inner Mongolia Autonomous Region Patentee after: Inner Mongolia Baogang Metal Manufacturing Co., Ltd Address before: Hexi Industrial Zone 014010 the Inner Mongolia Autonomous Region Queensland District in Baotou City Patentee before: BAOTOU IRON & STEEL (GROUP) Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 014015 new system office building, buerhantu Town, Kundulun District, Baotou City, Inner Mongolia Autonomous Region Patentee after: Inner Mongolia Baotou Steel Rare Earth steel plate Co.,Ltd. Address before: 014015 new system office building, buerhantu Town, Kundulun District, Baotou City, Inner Mongolia Autonomous Region Patentee before: Inner Mongolia Baogang Metal Manufacturing Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180824 Effective date of abandoning: 20220324 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180824 Effective date of abandoning: 20220324 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |