CN211650213U - Adjustable secondary air expands awl device among whirl pulverized coal burner - Google Patents
Adjustable secondary air expands awl device among whirl pulverized coal burner Download PDFInfo
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- CN211650213U CN211650213U CN201922411372.4U CN201922411372U CN211650213U CN 211650213 U CN211650213 U CN 211650213U CN 201922411372 U CN201922411372 U CN 201922411372U CN 211650213 U CN211650213 U CN 211650213U
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Abstract
An adjustable secondary air cone expanding device in a cyclone pulverized coal burner, which belongs to the manufacturing field of cyclone pulverized coal burners and aims to solve the problem that the combustion of a boiler is insufficient due to the fact that the inner secondary air cone expanding of the cyclone pulverized coal burner is not adjustable and the mixing time of primary air and secondary air cannot be reasonably controlled by the cyclone pulverized coal burner, the adjustable inner secondary air expanding cone is hinged at the port of the inner secondary air duct, the stretching end of the inner secondary air expanding cone extends to the outside of the swirling pulverized coal burner, the adjustable perimeter air expanding cone assembly is sleeved on the outer circular surface of the outlet end of the perimeter air cylinder, the adjustable perimeter air expanding cone is connected with the perimeter air cylinder in a sliding mode, and the stretching end of the adjustable perimeter air expanding cone extends to the outside of the cyclone pulverized coal burner. The utility model discloses mainly used whirl pulverized coal burner's improvement and manufacturing.
Description
Technical Field
The utility model belongs to whirl pulverized coal burner makes the field, concretely relates to adjustable overgrate air expands awl device among whirl pulverized coal burner.
Background
The cyclone pulverized coal burner is a pulverized coal burner with an outlet gas flow containing rotary jet flow. In this case, the burner outlet flow may be a combination of several coaxial swirling jets, or a combination of swirling jets and straight jets.
Because the inner secondary air expanding cone of the traditional cyclone pulverized coal burner is fixed and can not be adjusted, when a boiler burns coal with strong coking performance, the cyclone pulverized coal burner can not reasonably control the mixing time of primary air and secondary air, so that the boiler burns insufficiently, a hearth is easy to generate coking phenomenon, and particularly when the boiler burns easily-slagging coal with low melting point, high alkali metal content, high sulfur, high ash and the like, slagging of a burner and a boiler heating surface is difficult to control, the safe operation of a unit is seriously influenced, and the economical efficiency of the unit operation is reduced. Therefore, the development of the adjustable secondary air cone expanding device in the cyclone pulverized coal burner is very in line with the actual requirement.
SUMMERY OF THE UTILITY MODEL
The utility model provides an adjustable secondary air cone expanding device in a cyclone pulverized coal burner, which aims to solve the problem that the boiler is not combusted sufficiently due to the fact that the inner secondary air cone expanding of the cyclone pulverized coal burner is not adjustable and the mixing time of primary air and secondary air cannot be reasonably controlled;
an adjustable secondary air cone expanding device in a cyclone pulverized coal burner comprises an adjustable inner secondary air cone expanding and an adjustable peripheral air cone expanding, wherein the adjustable inner secondary air cone expanding is hinged to a port of an inner secondary air barrel, a stretching end of the adjustable inner secondary air cone expanding extends to the outside of the cyclone pulverized coal burner, the adjustable peripheral air cone expanding is sleeved on an outer circular surface of an outlet end of the peripheral air barrel and is in sliding connection with the peripheral air barrel, and the stretching end of the adjustable peripheral air cone expanding extends to the outside of the cyclone pulverized coal burner;
further: the adjustable inner secondary air cone expander comprises N inner secondary air cone expanding assemblies and a synchronous pulling assembly, N is a positive integer, the N inner secondary air cone expanding assemblies are arranged at equal intervals along the circumferential direction at the outlet end of an inner secondary air cylinder to form an inner secondary air cone expanding main body, each inner secondary air cone expanding assembly is hinged with the outlet end of the inner secondary air cylinder, the stretching end of each inner secondary air cone expanding assembly is fixedly connected with the synchronous pulling assembly, and the stretching end of the synchronous pulling assembly extends to the outside of the cyclone pulverized coal burner;
further: the inner secondary air cone expanding assembly comprises an inner secondary air cone expanding plate, a first connecting block and a first stretching straight rod, the inner secondary air cone expanding plate is hinged with the outlet end of the inner secondary air cylinder, the outer side wall of the inner secondary air cone expanding plate is fixedly connected with the first connecting block, one end of the first stretching straight rod is hinged with the first connecting block, and the other end of the first stretching straight rod is in floating connection with the synchronous pulling assembly;
further: the synchronous pulling assembly comprises an inner sleeve, an outer ring, two second stretching straight rods, two fixed blocks and N connecting cylinders, the outer ring is sleeved on the inner sleeve, the N connecting cylinders are arranged between the inner sleeve and the outer ring at equal intervals along the circumferential direction, one end of each connecting cylinder is fixedly connected with the inner sleeve, the other end of each connecting cylinder is fixedly connected with the outer ring, the inner sleeve is sleeved on the outer circumferential surface of the inner secondary air duct and is in sliding connection with the inner secondary air duct, the two fixed blocks are arranged on the outer circumferential surface of the inner sleeve at equal intervals along the circumferential direction, each fixed block is fixedly connected with the outer wall of the inner sleeve, one end of each second stretching straight rod is fixedly connected with one fixed block, and the other end of each second stretching straight rod extends to the outside of the cyclone;
further: the other end of each first stretching straight rod is provided with a sliding sleeve, the other end of each first stretching straight rod is fixedly connected with the outer wall of one sliding sleeve, and each sliding sleeve is sleeved on one connecting cylinder;
further: the adjustable perimeter air expanding cone comprises an adjustable perimeter air expanding cone main body, a connecting sleeve, two second connecting blocks and two third stretching straight bars, wherein the small opening end of the adjustable perimeter air expanding cone main body is fixedly connected with one end of the connecting sleeve, the connecting sleeve is sleeved on the outer circular surface of a perimeter air cylinder and is in sliding connection with the perimeter air cylinder, the two second connecting blocks are equidistantly arranged on the outer circular surface of the connecting sleeve along the circumferential direction, each second connecting block is fixedly connected with the connecting sleeve, and each second connecting block is fixedly connected with one end of one third stretching straight bar;
further: the adjustable secondary air cone expanding device in the rotational flow pulverized coal burner further comprises N leakage-proof air devices, each leakage-proof air device is arranged at the hinged position of one inner secondary air cone expanding assembly and an inner secondary air cylinder, and each leakage-proof air device is fixedly connected to the outer wall of the inner secondary air cylinder;
further: each anti-leakage air device comprises a third connecting block and an anti-leakage air baffle plate, the third connecting block is fixedly connected to the outer wall of the inner secondary air duct, one end of the anti-leakage air baffle plate is hinged to the third connecting block, and the other end of the anti-leakage air baffle plate is in contact with the outer wall of an inner secondary air expanding cone plate;
compared with the prior art, the utility model following beneficial effect has:
the utility model provides a pair of adjustable overgrate air expands awl device can realize that internal overgrate air expands the pivot angle of awl and expands the axial position control of awl to perimeter wind among the whirl pulverized coal burner, can effectual reduction furnace coking phenomenon, guarantees that the burning is abundant, improves coal type adaptability, improves unit operation economic nature.
Drawings
FIG. 1 is a schematic main sectional view of the present invention;
FIG. 2 is a schematic structural view of the secondary air cone expander assembly of the present invention;
FIG. 3 is a schematic structural view of the synchronous pulling assembly of the present invention;
FIG. 4 is a schematic structural view of the adjustable perimeter wind-expanding cone of the present invention;
fig. 5 is a schematic structural view of the middle leakage wind preventing device of the present invention.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1, and provides an adjustable secondary air cone expanding device in a cyclone pulverized coal burner, wherein the adjustable secondary air cone expanding device comprises an adjustable inner secondary air cone expanding 1 and an adjustable perimeter air cone expanding 2, the adjustable inner secondary air cone expanding 1 is hinged to a port of an inner secondary air duct, a stretching end of the adjustable inner secondary air cone expanding 1 extends to the outside of the cyclone pulverized coal burner, the adjustable perimeter air cone expanding 2 is sleeved on an outer circular surface of an outlet end of the perimeter air duct, the adjustable perimeter air cone expanding 2 is connected with the perimeter air duct in a sliding manner, and the stretching end of the adjustable perimeter air cone expanding 2 extends to the outside of the cyclone pulverized coal burner.
The adjustable secondary air cone expanding device in the cyclone pulverized coal burner can realize the swing angle adjustment of an inner secondary air cone expanding and the axial position adjustment of a peripheral air cone expanding, can effectively reduce the coking phenomenon of a hearth, ensures full combustion, improves the adaptability of coal types and improves the running economy of a unit.
The second embodiment is as follows: referring to fig. 1, this embodiment is described, and the adjustable inner secondary air cone expander 1 according to the first embodiment is further defined, in this embodiment, the adjustable inner secondary air cone expander 1 includes N inner secondary air cone expanding assemblies 11 and a synchronous pulling assembly 12, where N is a positive integer, the N inner secondary air cone expanding assemblies 11 are circumferentially and equidistantly arranged at an outlet end of an inner secondary air duct to form an inner secondary air cone expander main body, each inner secondary air cone expanding assembly 11 is hinged to the outlet end of the inner secondary air duct, a stretching end of each inner secondary air cone expanding assembly 11 is fixedly connected to the synchronous pulling assembly 12, and a stretching end of the synchronous pulling assembly 12 extends to the outside of the swirling pulverized coal burner. Other components and connection modes are the same as those of the first embodiment.
In this embodiment, the adjustable interior overgrate air expands awl 1 becomes different subassemblies with current interior overgrate air expands awl overall structure, every subassembly with including the articulated regulation that can realize single subassembly angle of secondary dryer, synchronous pulling subassembly 12 is the mechanism that guarantees that a plurality of subassemblies can realize synchronous regulation, for make adjustable interior overgrate air expand awl 1 possess more completely and the synchronism when using and adjusting.
The third concrete implementation mode: referring to fig. 2, this embodiment is described, and the inner overfire air cone expanding assembly 11 according to the second embodiment is further limited, in this embodiment, the inner overfire air cone expanding assembly 11 includes an inner overfire air cone expanding plate 111, a first connecting block 112, and a first stretching straight rod 113, the inner overfire air cone expanding plate 111 is hinged to an outlet end of the inner overfire air duct, the first connecting block 112 is fixedly connected to an outer side wall of the inner overfire air cone expanding plate 111, one end of the first stretching straight rod 113 is hinged to the first connecting block 112, and the other end of the first stretching straight rod 113 is connected to the synchronous pulling assembly 12 in a floating manner. The other components and the connection mode are the same as those of the second embodiment.
In this embodiment, the single inner secondary air cone expanding assembly 11 itself may have a function of adjusting the single inner secondary air cone expanding plate 111, so that the secondary air cone expanding plates 111 in each block may be adjusted individually.
The fourth concrete implementation mode: referring to fig. 3 to illustrate the present embodiment, the present embodiment is further limited to the synchronous pulling assembly 12 described in the second embodiment, in the present embodiment, the synchronous pulling assembly 12 includes an inner sleeve 4, an outer ring 5, two second stretching straight rods 6, two fixing blocks 8, N connecting cylinders 7, wherein the outer ring 5 is sleeved on the inner sleeve 4, the N connecting cylinders 7 are circumferentially equidistantly disposed between the inner sleeve 4 and the outer ring 5, one end of each connecting cylinder 7 is fixedly connected to the inner sleeve 4, the other end of each connecting cylinder 7 is fixedly connected to the outer ring 5, the inner sleeve 4 is sleeved on the outer circumferential surface of the inner secondary air duct, the inner sleeve 4 is slidably connected to the inner secondary air duct, the two fixing blocks 8 are circumferentially equidistantly disposed on the outer circumferential surface of the inner sleeve 4, each fixing block 8 is fixedly connected to the outer wall of the inner sleeve 4, one end of each second stretching straight rod 6 is fixedly connected to one fixing block 8, the other end of each second stretching straight rod 6 extends to the outside of the swirling pulverized coal burner. The other components and the connection mode are the same as those of the second embodiment.
In this embodiment, the sliding connection between the synchronous pulling assembly 12 and the inner secondary air duct is that a plurality of pulleys are arranged on the inner sleeve 4 along the circumferential direction at equal intervals, the outer circumferential surface of each pulley is attached to the outer wall of the inner secondary air duct, the synchronous pulling assembly 12 can be fixed at a fixed position in order to ensure that the synchronous pulling assembly works, a friction glue layer can be attached to the inner wall of the inner sleeve 4, the inner sleeve 4 can slide on the inner secondary air duct when an operator pulls the second stretching straight rod 6, and the inner sleeve 4 is static relative to the inner secondary air duct when the operator does not pull the second stretching straight rod 6.
The fifth concrete implementation mode: referring to fig. 3, this embodiment is further limited to the first stretching straight rod 113 described in the third embodiment, in this embodiment, a sliding sleeve 9 is provided at the other end of each first stretching straight rod 113, the other end of each first stretching straight rod 113 is fixedly connected to the outer wall of one sliding sleeve 9, and each sliding sleeve 9 is sleeved on one connecting cylinder 7. Other components and connection modes are the same as those of the third embodiment.
With such an arrangement, it is ensured that the first stretching straight rod 113 and the connecting cylinder 7 can be connected in a floating manner, and the adjustment of the inner secondary air taper angle actually converts the linear motion of the first stretching straight rod 113 into the swing of the inner secondary air taper plate 111, but when the first stretching straight rod 113 does the linear motion of the same type, the first stretching straight rod 113 is not always in a horizontal position, and the horizontal height of the first stretching straight rod 113 can be lifted along with the swing angle of the inner secondary air taper plate 111, so that the sliding sleeve is arranged to ensure that the position of the first stretching straight rod 113 can be changed along with the swing of the inner secondary air taper plate 111.
The sixth specific implementation mode: referring to fig. 4 to illustrate this embodiment, this embodiment is to further define the adjustable perimeter wind-expanding cone 2 according to the first embodiment, in this embodiment, the adjustable perimeter wind-expanding cone 2 includes an adjustable perimeter wind-expanding cone main body 21, a connecting sleeve 22, two second connecting blocks 23 and two third stretching straight rods 24, a small opening end of the adjustable perimeter wind-expanding cone main body 21 is fixedly connected with one end of the connecting sleeve 22, the connecting sleeve 22 is sleeved on an outer circumferential surface of the perimeter wind barrel, and the connecting sleeve 22 is slidably connected with the perimeter wind barrel, the two second connecting blocks 23 are equidistantly disposed on the outer circumferential surface of the connecting sleeve 22 along the circumferential direction, each second connecting block 23 is fixedly connected with the connecting sleeve 22, and each second connecting block 23 is fixedly connected with one end of one third stretching straight rod 24. Other components and connection modes are the same as those of the first embodiment.
In this embodiment, be equipped with a plurality of pulleys along circumference equidistance on the connecting sleeve 22 in adjustable perimeter wind expands awl 2, the outer disc of every pulley and the outer wall laminating of perimeter dryer, connecting sleeve 22 can fix in fixed position for guaranteeing the during operation, can adhere to on its connecting sleeve 22's the inner wall and increase the frictional force glue film, it can slide on the perimeter dryer to guarantee connecting sleeve 22 when operator pulling No. three tensile straight-bars 24, the operator is not pulling No. three tensile straight-bars 24 time endotheca 4 static for interior secondary dryer.
The seventh embodiment: referring to fig. 1, this embodiment is described, and the present embodiment further defines the adjustable secondary air cone expanding device in the cyclone pulverized coal burner according to the first embodiment, in this embodiment, the adjustable secondary air cone expanding device in the cyclone pulverized coal burner further includes N leakage-proof air devices 3, each leakage-proof air device 3 is disposed at a hinge joint of an inner secondary air cone expanding assembly 11 and an inner secondary air duct, and each leakage-proof air device 3 is fixedly connected to an outer wall of the inner secondary air duct. Other components and connection modes are the same as those of the first embodiment.
In this embodiment, the leakage-proof wind device 3 is added to prevent the wind from leaking at the hinged position of the inner secondary wind cone expanding plate 111 and the inner secondary wind tube.
The specific implementation mode is eight: referring to fig. 5, this embodiment is described, and the present embodiment further defines the leakage-proof wind devices 3 according to the seventh embodiment, in this embodiment, each leakage-proof wind device 3 includes a third connecting block 31 and a leakage-proof blocking piece 32, the third connecting block 31 is fixedly connected to the outer wall of the inner secondary wind tube, one end of the leakage-proof blocking piece 32 is hinged to the third connecting block 31, and the other end of the leakage-proof blocking piece 32 is in contact with the outer wall of one inner secondary wind expanding conical plate 111. The other components and the connection mode are the same as those of the seventh embodiment.
The present invention has been disclosed in the above embodiments, but not limited to the present invention, and any person skilled in the art can make some changes or modifications to the equivalent embodiments without departing from the technical scope of the present invention, and any simple modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments will still belong to the technical scope of the present invention.
Principle of operation
The utility model discloses need carry out two steps of operations when using, the pendulum angle regulation of internal overgrate air awl of expanding and to the axial position control of perimeter wind awl of expanding respectively, at first tensile straight-bar 6 of operator pulling No. two, make tensile straight-bar 6 drive including endotheca 4 slide on the secondary dryer, connect cylinder 7 simultaneously and can drive tensile straight-bar 113 through sliding sleeve 9 and do class rectilinear motion, the swing change of overgrate air awl board 111 in single has been decided in advancing or retreating of tensile straight-bar 113, because the relation of synchronous pulling subassembly 12, synchronous swing change can be realized to all interior overgrate air awl boards 111, the second step is that the operator pulls a No. three tensile straight-bar 24, make connecting sleeve 22 slide on the perimeter dryer under the drive of No. three tensile straight-bar 24, drive adjustable perimeter wind awl main part 21 axial displacement simultaneously.
Claims (8)
1. The utility model provides an adjustable overgrate air expands awl device among whirl pulverized coal burner which characterized in that: adjustable overgrate air expands awl device expands awl (1) and adjustable perimeter wind and expands awl (2) including overgrate air in adjustable, port department of overgrate air dryer including overgrate air expands awl (1) is articulated in adjustable, the outside that the tensile end of overgrate air expands awl (1) extends to whirl pulverized coal burner in adjustable, adjustable perimeter wind expands awl (2) cover and establishes on the outer disc of the exit end of perimeter dryer, and adjustable perimeter wind expands awl (2) and perimeter dryer sliding connection, the tensile end of adjustable perimeter wind expands awl (2) extends to the outside of whirl pulverized coal burner.
2. The adjustable secondary air cone expanding device in the cyclone pulverized coal burner as claimed in claim 1, wherein: overgrate air expands awl (1) and expands awl subassembly (11) and synchronous pulling subassembly (12) including N interior overgrate air in adjustable, N is the positive integer, overgrate air expands awl subassembly (11) in N is arranged along circumference equidistance in the export end of secondary dryer including expands the awl main part, overgrate air expands awl subassembly (11) and the articulated setting of export end of interior secondary dryer in every, the extension end and the synchronous pulling subassembly (12) fixed connection of overgrate air expand awl subassembly (11) in every, the extension end of synchronous pulling subassembly (12) extends to the outside of whirl pulverized coal burner.
3. The adjustable secondary air cone expanding device in the cyclone pulverized coal burner as claimed in claim 2, wherein: interior overgrate air expands awl subassembly (11) and includes interior overgrate air and expands awl board (111), a connecting block (112) and tensile straight-bar (113), interior overgrate air expands the export end of awl board (111) and interior secondary dryer articulated, and the rigid coupling has a connecting block (112) on the lateral wall of interior overgrate air expands awl board (111), and the one end of a tensile straight-bar (113) is articulated with a connecting block (112), and the other end and the synchronous pulling subassembly (12) of a tensile straight-bar (113) float and be connected.
4. The adjustable secondary air cone expanding device in the cyclone pulverized coal burner as claimed in claim 3, wherein: the synchronous pulling assembly (12) comprises an inner sleeve (4), an outer ring (5), two second stretching straight rods (6), two fixed blocks (8) and N connecting cylinders (7), wherein the outer ring (5) is sleeved on the inner sleeve (4), the N connecting cylinders (7) are arranged between the inner sleeve (4) and the outer ring (5) along the circumferential equal distance, one end of each connecting cylinder (7) is fixedly connected with the inner sleeve (4), the other end of each connecting cylinder (7) is fixedly connected with the outer ring (5), the inner sleeve (4) is sleeved on the outer circular surface of the inner secondary air duct, the inner sleeve (4) is connected with the inner secondary air duct in a sliding manner, the two fixed blocks (8) are arranged on the outer circular surface of the inner sleeve (4) along the circumferential equal distance, each fixed block (8) is fixedly connected with the outer wall of the inner sleeve (4), one end of each second stretching straight rod (6) is fixedly connected with one fixed block (8), the other end of each second stretching straight rod (6) extends to the outside of the swirling pulverized coal burner.
5. The adjustable secondary air cone expanding device in the cyclone pulverized coal burner as claimed in claim 4, wherein: the other end of each first stretching straight rod (113) is provided with a sliding sleeve (9), the other end of each first stretching straight rod (113) is fixedly connected with the outer wall of one sliding sleeve (9), and each sliding sleeve (9) is sleeved on one connecting cylinder (7).
6. The adjustable secondary air cone expanding device in the cyclone pulverized coal burner as claimed in claim 1, wherein: adjustable perimeter wind expands awl (2) is including adjustable perimeter wind expands awl main part (21), connecting sleeve (22), two No. two connecting blocks (23) and two No. three tensile straight-bars (24), the osculum end of adjustable perimeter wind expands awl main part (21) and the one end fixed connection of connecting sleeve (22), and connecting sleeve (22) cover is established on the outer disc of perimeter dryer, and connecting sleeve (22) and perimeter dryer sliding connection, and two No. two connecting blocks (23) set up on the outer disc of connecting sleeve (22) along circumference equidistance, and every No. two connecting blocks (23) and connecting sleeve (22) fixed connection, the one end fixed connection of every No. two connecting blocks (23) and a No. three tensile straight-bars (24).
7. The adjustable secondary air cone expanding device in the cyclone pulverized coal burner as claimed in claim 3, wherein: the adjustable secondary air cone expanding device in the cyclone pulverized coal burner further comprises N leakage-proof air devices (3), each leakage-proof air device (3) is arranged at the hinged position of an inner secondary air cone expanding assembly (11) and an inner secondary air cylinder, and each leakage-proof air device (3) is fixedly connected to the outer wall of the inner secondary air cylinder.
8. The adjustable secondary air cone expanding device in the cyclone pulverized coal burner as claimed in claim 7, wherein: every prevents that air leakage device (3) includes No. three connecting blocks (31) and prevents air leakage separation blade (32), on the outer wall of secondary dryer including No. three connecting blocks (31) rigid coupling, the one end of preventing air leakage separation blade (32) is articulated with No. three connecting blocks (31), and the other end and the interior overgrate air of preventing air leakage separation blade (32) expand conical plate (111) outer wall contact.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922411372.4U CN211650213U (en) | 2019-12-28 | 2019-12-28 | Adjustable secondary air expands awl device among whirl pulverized coal burner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922411372.4U CN211650213U (en) | 2019-12-28 | 2019-12-28 | Adjustable secondary air expands awl device among whirl pulverized coal burner |
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| CN211650213U true CN211650213U (en) | 2020-10-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113188119A (en) * | 2021-02-07 | 2021-07-30 | 哈尔滨工业大学 | Swirl pulverized coal burner with variable flaring |
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2019
- 2019-12-28 CN CN201922411372.4U patent/CN211650213U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113188119A (en) * | 2021-02-07 | 2021-07-30 | 哈尔滨工业大学 | Swirl pulverized coal burner with variable flaring |
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