CN201339038Y - Adjustable swirl pulverized coal air supply device - Google Patents
Adjustable swirl pulverized coal air supply device Download PDFInfo
- Publication number
- CN201339038Y CN201339038Y CNU2009201049842U CN200920104984U CN201339038Y CN 201339038 Y CN201339038 Y CN 201339038Y CN U2009201049842 U CNU2009201049842 U CN U2009201049842U CN 200920104984 U CN200920104984 U CN 200920104984U CN 201339038 Y CN201339038 Y CN 201339038Y
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- sliding sleeve
- wall
- compensation device
- coal dust
- air compensation
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Abstract
The utility model provides an adjustable swirl pulverized coal air supply device, which comprises two flanges; the flanges are parallel and fixedly arranged at an interval; a fixed pipe and an outer ring pipe with a certain annular space are coaxially sleeved between the two flanges; one end of the fixed pipe is fixedly connected with a through hole of one flange; a sliding sleeve which can move along the fixed pipe is closely sleeved at the outer wall of the fixed pipe; one side of the outer ring pipe is hermetically sleeved at the outer wall of the sliding sleeve; the other side of the outer ring pipe forms a tapered inclined contraction part; an air supply port is arranged on the pipe wall of the outer ring pipe; a gap is arranged between the inner wall of the inclined contraction part and the other end of the fixed pipe; the outer end of the inclined contraction part forms a coal injection mouth which is fixedly connected with a through hole of the other flange; and a swirl tank structure is arranged on the sliding sleeve and faces up to one end of the inclined contraction part. The air supply device can realize even and stable mixing of the pulverized coal and the supplied air, and provides basic guarantee for continuous and stable coal injection of the blast furnace.
Description
Technical field
The utility model is the pulverized coal injection in blast furnace air compensation device about a kind of field of metallurgy, especially relates to a kind of adjustable rotational flow coal dust air compensation device that has.
Background technology
Pulverized coal injection in blast furnace has become the important measures that reduce coke ratio, improve the blast furnace operating index; Each steel production enterprise is all being taken measures all the time, improves the pulverized coal injection amount, and wherein regulating and improve injecting coal quantity by the coal dust air compensation device is a kind of main method.As shown in Figure 5, coal dust air compensation device 9 includes coal dust import 91, secondary air compensating mouth 92 and gas-solid mixture outlet 93, and the coal dust air compensation device is by regulating coal dust and winding-up delivering gas ratio, reaching the effect of stablizing the furnace temperature and the working of a furnace when pulverized coal injection.Characteristics such as good coal dust air compensation device has that the injecting coal quantity of adjusting scope is wide, tonifying Qi bleed pressure and flow while are adjustable.
Existing coal dust air compensation device form is a lot, and injection type, circular seam type, rotary-cutting type, fluidisation tubular type or the like are arranged; But existing coal dust air compensation device all exists air compensation and tonifying Qi pressure to regulate many deficiencies such as inconvenience, tonifying Qi bleed pressure and flow matches difficulty, equipment applicable working condition narrow range, parts repeat usage be low jointly.Therefore, be necessary to provide a kind of improved air compensation device to overcome above-mentioned drawback.
The utility model content
The purpose of this utility model is to provide a kind of adjustable rotational flow coal dust air compensation device, and pulverized coal injection in blast furnace flow of air supply and pressure can be regulated arbitrarily, and stably jets according to the variation realization coal dust of operating mode, to be suitable for practicality more.
The purpose of this utility model is to realize like this, a kind of adjustable rotational flow coal dust air compensation device, this air compensation device comprises two flanges parallel and fixed intervals are provided with, between described two flanges, be arranged with the concentric setting and have certain annular space fixed tube and outside endless tube, described fixed tube one end is fixedlyed connected with the through hole of a flange, at tight sheathed one sliding sleeve that can move along this fixed tube of described fixed tube outer wall; Be located on to described outer endless tube one side seal the sliding sleeve outer wall, outer endless tube opposite side forms the inclination contraction flow region of a convergent, the tube wall that is somebody's turn to do outer endless tube is provided with a gas supplementing opening, the inwall of this inclination contraction flow region and the fixed tube the other end remain with certain slit, and the outer end of this inclination contraction flow region forms a pci port and fixedlys connected with the through hole of another flange; This sliding sleeve is provided with eddy flow groove structure in the face of an end of inclination contraction flow region.
In a better embodiment of the present utility model, the structure that described outer endless tube one side and sliding sleeve outer wall ring are established sealing comprises that one is sheathed on a block set of sliding sleeve outer wall, be provided with sealing member between this block set inwall and sliding sleeve outer wall, this block set one side is fixedlyed connected with outer endless tube, and this block set end side and its inwall junction are provided with an annular groove; One rotation body is sheathed on the sliding sleeve outer wall, and an end of rotation body is arranged in this annular groove, and this rotation body inwall is provided with internal thread, and the sliding sleeve outer wall corresponding with the rotation body is provided with outside screw.
In a better embodiment of the present utility model, the cell wall of described annular groove is provided with radial direction through hole, and the card of rotation body is established end position that should through hole is provided with a circle groove, and a fixed pin shaft is located in this through hole, and the fixed pin shaft front end is fastened in the described groove.
In a better embodiment of the present utility model, described rotation body is provided with one handle.
In a better embodiment of the present utility model, the outer wall of described sliding sleeve is provided with scale marks.
In a better embodiment of the present utility model, be provided with the fixed link of a plurality of fixedly connected described two flanges between described two flanges.
In a better embodiment of the present utility model, described sliding sleeve forms with inclination contraction flow region corresponding inclined-plane by inwall to outer wall in the face of an end of inclination contraction flow region.
In a better embodiment of the present utility model, described eddy flow groove structure is a plurality of spiral slots that are obliquely installed on described inclined-plane.
In a better embodiment of the present utility model, described a plurality of spiral slots are to be made of the many raised line bodies that shape in the shape of a spiral is welded on the described inclined-plane.
In a better embodiment of the present utility model, the inwall of described inclination contraction flow region is 10 °～30 ° with the angle of the central axis of outer endless tube.
From the above mentioned, adjustable rotational flow coal dust air compensation device of the present utility model, it is a kind of technical equipment that the pulverized coal injection operating procedure is optimized that is used for, have be suitable for that operation operating mode scope is wide, the coal powder injection solid-gas ratio is easy to adjust, the characteristics such as repeat usage height of detachability and parts neatly, can realize that coal dust mixes uniformly and stably with tonifying Qi gas, be the blast furnace coal powder injection continuously and stably assurance that provides the foundation.
Description of drawings
The following drawings only is intended to the utility model done and schematically illustrates and explain, does not limit scope of the present utility model.Wherein,
Fig. 1: structural representation of the present utility model.
The schematic side view of Fig. 2: Fig. 1.
Fig. 3: structure cross-sectional schematic of the present utility model.
Fig. 4: the synoptic diagram of eddy flow groove structure in the utility model.
Fig. 5: prior art constructions synoptic diagram.
Embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast description of drawings embodiment of the present utility model.
As Fig. 1～shown in Figure 3, a kind of adjustable rotational flow coal dust air compensation device, this air compensation device comprises two flanges 81 and 82 parallel and fixed intervals are provided with, two flange center positions are respectively equipped with through hole 811 and 821, between described two flanges 81 and 82, be arranged with the concentric setting and have mutually certain annular space A fixed tube 1 and outside endless tube 2, described fixed tube 1 one ends are fixedlyed connected with the through hole 811 of flange 81 constituting coal powder entrance 11, tight sheathed one sliding sleeve 3 that can move along this fixed tube 1 on described fixed tube 1 outer wall; Be located on to described outer endless tube 2 one side seals the outer wall of sliding sleeve 3, outer endless tube 2 opposite sides form the inclination contraction flow region 21 of a convergent, the tube wall that is somebody's turn to do outer endless tube 2 is provided with a gas supplementing opening 22, the inwall of this inclination contraction flow region 21 and fixed tube 1 the other end remain with certain slit δ, and the outer end of this inclination contraction flow region 21 forms a pci port 211 and fixedlys connected with the through hole 821 of flange 82; This sliding sleeve 3 is provided with eddy flow groove structure 31 in the face of an end of inclination contraction flow region 21.
From the above mentioned, adjustable rotational flow coal dust air compensation device of the present utility model in use, the center pulverized coal conveying of air compensation device (be coal dust deliver into this air compensation device) by the coal powder entrance 11 of fixed tube 1 one ends, gas supplementing opening 22 delivering gas of outer endless tube 2, after the coal dust process fixed tube 1 of carrying, in the time that air compensation device will being left, be subjected to impact from secondary air compensating gas in the annular space A.The adding of secondary air compensating gas will reduce the solid-gas ratio of pulverized coal conveying, destroy the formation of stock column, reduce deposition, thereby suppress the powder discrete state.Along with the variation of operating mode, coal dust and gas mixture ratio example that the site operation personnel can be are as required adjusted the size of slit δ by the position of mobile sliding sleeve 3, thereby regulate the top hole pressure of secondary air compensating gas, can reach the needs of steady temperature, stable yields.
Because sliding sleeve 3 is provided with eddy flow groove structure 31 in the face of an end of inclination contraction flow region 21, described secondary air compensating gas is when the eddy flow groove structure 31 of installing through slit δ place, to form the spirrillum air-flow, make secondary air compensating gas be eddy flow shape and powder uniform mixing, therefore, can reduce the wearing and tearing of air compensation device spout member, prevent that coal dust to excessive, helping environmental protection all around.
In the present embodiment, described sliding sleeve 3 is in the face of an end of inclination contraction flow region 21, forms the inclined-plane corresponding with inclination contraction flow region 21 by inwall to outer wall, and described eddy flow groove structure 31 is arranged on this inclined-plane.Described eddy flow groove structure 31 is for being obliquely installed a plurality of spiral slots 32 on described inclined-plane, and described a plurality of spiral slots 32 are to constitute (as shown in Figure 4) by the many raised line bodies 321 that shape in the shape of a spiral is welded on the described inclined-plane.During use, tonifying Qi gas flows in a plurality of spiral slots 32, will form the spirrillum air-flow.The number of described raised line body 321 welding can be decided according to practical situation.
Further, as shown in Figure 3, the inwall of described inclination contraction flow region 21 is 10 °～30 ° with the angle theta of the central axis of outer endless tube 2, and optimal selection is 15 °.
In the present embodiment, as shown in Figure 3, the structure that described outer endless tube 2 one sides and sliding sleeve 3 outer wall rings are established sealing comprises that one is sheathed on the block set 23 of sliding sleeve 3 outer walls, be provided with sealing member 7 between these block set 23 inwalls and sliding sleeve 3 outer walls, these block set 23 1 sides are fixedlyed connected with outer endless tube 2, and these block set 23 end side and block set inwall junction are provided with an annular groove 231; One rotation body 4 is sheathed on sliding sleeve 3 outer walls, and an end of rotation body 4 is arranged in this annular groove 231, and these rotation body 4 inwalls are provided with internal thread 41, and sliding sleeve 3 outer walls corresponding with rotating body 4 are provided with outside screw 31.When described rotation body 4 rotates, because the effect of screw thread transmission can make sliding sleeve 3 move along fixed tube 1.
Further, the cell wall of described annular groove 231 is provided with radial direction through hole 232, the card of rotation body 4 is established end position that should through hole 232 is provided with a circle groove 42, one fixed pin shaft 5 is located in this through hole 232, fixed pin shaft 5 front ends are fastened in the described groove 42, so that described rotation body 4 rotates relative to block set 23 only and can not move left and right.
In the present embodiment, described rotation body 4 is provided with one handle 43, with the described rotation body 4 of convenient rotation;
The outer wall of described sliding sleeve 3 is provided with scale marks 32 (as shown in Figure 1).In the present embodiment, according to the production demand, be marked with 0～40mm scale marks at sliding sleeve 3, adjusting by handle 43, according to the scale marks that is provided with on the sliding sleeve 3, can determine the gap width between sliding sleeve 3 ends and inclination contraction flow region 21 inwalls intuitively, reach the blending ratio of needed best coal dust and tonifying Qi gas.In the concentrated phase course of conveying, can rely on the air inlet slit δ that accurately regulates air compensation device, in a big way, regulate powder flow, the stable effect of carrying.
In the present embodiment, for the ease of assembling and maintenance, described inclination contraction flow region 21 can be an independent structure, and it is fixedlyed connected (as shown in Figure 3) with a side of described outer endless tube 2, is provided with the fixed link 6 of a plurality of fixedly connected described two flanges between described two flanges 81 and 82.
The utility model compared with prior art has tangible advantage and beneficial effect.
1. adjustable eddy flow air compensation device of the present utility model, can make the coal spraying process flow process compact practical more, eliminate the drawback that coal dust and gas mixture homogeneity are difficult to realize under different operating modes.
2. adjustable eddy flow air compensation device of the present utility model belongs to detachable mixing capsule tubular type, it organically combines various parts, because its detachability, can finish the replacing of outer endless tube in the short period of time, save the repair time, improve the parts repeating utilization factor, reduce equipment maintenance cost, prolonged the work-ing life of equipment, for blast furnace coal powder injection continuously and stably provides basic guarantee.
3. the structure of adjustable eddy flow air compensation device of the present utility model is the internal and external casing form, the center pulverized coal conveying, outer endless tube is carried tonifying Qi gas, and pci port is certain angle, owing to eddy flow groove structure is installed, make tonifying Qi gas be the eddy flow shape and the center powder reaches uniform mixing at pci port.
4. adjustable eddy flow air compensation device of the present utility model, be marked with scale marks at sliding sleeve, by the adjusting of handle, can determine the gap width between sliding sleeve end and the mixing tube inwall intuitively, reach the blending ratio of needed best coal dust and tonifying Qi gas.
The above only is the schematic embodiment of the utility model, is not in order to limit scope of the present utility model.Any those skilled in the art, equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.
Claims (10)
1, a kind of adjustable rotational flow coal dust air compensation device, it is characterized in that: this air compensation device comprises two flanges parallel and fixed intervals are provided with, between described two flanges, be arranged with the concentric setting and have certain annular space fixed tube and outside endless tube, described fixed tube one end is fixedlyed connected with the through hole of a flange, at tight sheathed one sliding sleeve that can move along this fixed tube of described fixed tube outer wall; Be located on to described outer endless tube one side seal the sliding sleeve outer wall, outer endless tube opposite side forms the inclination contraction flow region of a convergent, the tube wall that is somebody's turn to do outer endless tube is provided with a gas supplementing opening, the inwall of this inclination contraction flow region and the fixed tube the other end remain with certain slit, and the outer end of this inclination contraction flow region forms a pci port and fixedlys connected with the through hole of another flange; This sliding sleeve is provided with eddy flow groove structure in the face of an end of inclination contraction flow region.
2, adjustable rotational flow coal dust air compensation device as claimed in claim 1, it is characterized in that: the structure that described outer endless tube one side and sliding sleeve outer wall ring are established sealing comprises that one is sheathed on the block set of sliding sleeve outer wall, be provided with sealing member between this block set inwall and sliding sleeve outer wall, this block set one side is fixedlyed connected with outer endless tube, and this block set end side and its inwall junction are provided with an annular groove; One rotation body is sheathed on the sliding sleeve outer wall, and an end of rotation body is arranged in this annular groove, and this rotation body inwall is provided with internal thread, and the sliding sleeve outer wall corresponding with the rotation body is provided with outside screw.
3, adjustable rotational flow coal dust air compensation device as claimed in claim 2, it is characterized in that: the cell wall of described annular groove is provided with radial direction through hole, the card of rotation body is established end position that should through hole is provided with a circle groove, and a fixed pin shaft is located in this through hole, and the fixed pin shaft front end is fastened in the described groove.
4, adjustable rotational flow coal dust air compensation device as claimed in claim 2, it is characterized in that: described rotation body is provided with one handle.
5, adjustable rotational flow coal dust air compensation device as claimed in claim 2, it is characterized in that: the outer wall of described sliding sleeve is provided with scale marks.
6, adjustable rotational flow coal dust air compensation device as claimed in claim 1 is characterized in that: the fixed link that is provided with a plurality of fixedly connected described two flanges between described two flanges.
7, adjustable rotational flow coal dust air compensation device as claimed in claim 1 is characterized in that: described sliding sleeve forms with inclination contraction flow region corresponding inclined-plane by inwall to outer wall in the face of an end of inclination contraction flow region.
8, adjustable rotational flow coal dust air compensation device as claimed in claim 7 is characterized in that: described eddy flow groove structure is a plurality of spiral slots that are obliquely installed on described inclined-plane.
9, adjustable rotational flow coal dust air compensation device as claimed in claim 8 is characterized in that: described a plurality of spiral slots are to be made of the many raised line bodies that shape in the shape of a spiral is welded on the described inclined-plane.
10, adjustable rotational flow coal dust air compensation device as claimed in claim 1 is characterized in that: the inwall of described inclination contraction flow region is 10 °～30 ° with the angle of the central axis of outer endless tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201049842U CN201339038Y (en) | 2009-01-14 | 2009-01-14 | Adjustable swirl pulverized coal air supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201049842U CN201339038Y (en) | 2009-01-14 | 2009-01-14 | Adjustable swirl pulverized coal air supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201339038Y true CN201339038Y (en) | 2009-11-04 |
Family
ID=41234583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201049842U Expired - Fee Related CN201339038Y (en) | 2009-01-14 | 2009-01-14 | Adjustable swirl pulverized coal air supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201339038Y (en) |
-
2009
- 2009-01-14 CN CNU2009201049842U patent/CN201339038Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091104 Termination date: 20140114 |