CN205851124U - Turbine central tube structure in the bitubular of a kind of cyclone separator - Google Patents
Turbine central tube structure in the bitubular of a kind of cyclone separator Download PDFInfo
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- CN205851124U CN205851124U CN201620554507.6U CN201620554507U CN205851124U CN 205851124 U CN205851124 U CN 205851124U CN 201620554507 U CN201620554507 U CN 201620554507U CN 205851124 U CN205851124 U CN 205851124U
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- central tube
- cylinder
- turbine
- urceolus
- central cylinder
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- 238000000926 separation method Methods 0.000 claims abstract description 9
- 239000012528 membrane Substances 0.000 claims description 20
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 2
- 238000003780 insertion Methods 0.000 abstract description 2
- 230000037431 insertion Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
本实用新型公开了一种旋风分离器的双筒内涡轮中心筒结构，包括插入分离器筒体顶部的中心筒外筒，设置在中心筒外筒内的中心筒内筒，设置在中心筒外筒和中心筒内筒间的中心筒内涡轮，设置在中心筒内底部的中心筒导流罩；所述中心筒内涡轮采用螺旋流线型结构，中心筒内涡轮的叶片旋向与气流旋转方向相异，中心筒内涡轮的叶片数目为1‑8片，叶片切线与圆周方向的夹角即“叶片安放角”为10°～100°；所述中心筒导流罩为弹头状；通过上述设计缩短中心筒插入深度，降低旋风分离器整体阻力，优化分离器内流场，减轻气流摆尾，避免扬尘，提高分离效率；相关方案可用于旋风分离器提效改造和高效低阻力旋风分离器设计。
The utility model discloses a double-tube inner turbine central cylinder structure of a cyclone separator, which comprises a central cylinder outer cylinder inserted into the top of the separator cylinder, a central cylinder inner cylinder arranged in the central cylinder outer cylinder, and a central cylinder inner cylinder arranged outside the central cylinder The turbine in the central cylinder between the central cylinder and the inner cylinder of the central cylinder is arranged on the center cylinder shroud at the bottom of the central cylinder; the turbine in the central cylinder adopts a spiral streamlined structure, and the blades of the turbine in the central cylinder rotate in the same direction as the airflow rotation direction. The number of blades of the turbine in the central cylinder is 1‑8, and the angle between the blade tangent and the circumferential direction, that is, the "blade placement angle" is 10° to 100°; the central cylinder shroud is bullet-shaped; through the above design Shorten the insertion depth of the central cylinder, reduce the overall resistance of the cyclone separator, optimize the flow field in the separator, reduce the tail of the airflow, avoid dust, and improve the separation efficiency; related schemes can be used for the efficiency improvement of the cyclone separator and the design of a high-efficiency and low-resistance cyclone separator .
Description
Technical field
This utility model belongs to Sector of Cfb Boilers, relates in the bitubular of a kind of cyclone separator in turbine
Heart barrel structure.
Technical background
Cyclone separator is the vitals of CFBB, and the gas flowing within cyclone separator is a kind of multiple
Miscellaneous three-dimensional swirl flow, carry the gas of solid particle tangentially into Membrane Separator Cylinder for CFB Boiler after, will produce by force at separated space
Strong swirling motion.This swirling motion can regard as Rankine combined vortex, and its contour stealth is a kind of semi-free vortex, and inward eddy
Vortex core is then similar to the vortex core that rigid body rotates.In the outside of eddy flow, gas moves from the top down, then in center from bottom to top
Motion.Wherein, the gas of eddy flow perimeter moves downward for taking the solid particle being separated to wall to cyclone separator
The dust-exhausting port of bottom has important effect.For entering the granule of separated space, will be by radially inner resistance and radial direction
The common effect of outside centrifugal force.Dusty gas produces rotational flow from once entrance cyclone separator, and carries in gas
Solid particle due to subject to centrifugal forces, from one enter separator gas-solid begin to separate.
Along with the increase of CFBB capacity, the barrel diameter of cyclone separator arrangement size, particularly separator shows
Writing and improve, the big type of furnace typically uses multiple separator to be arranged in parallel, the optimization design aspect different designs factory to single separator
The processing mode of family is slightly different, but total starting point is all desirable to subtract less granular volume by the flow field improving in separator
Inhale and carry secretly.But from the point of view of practical situations, generally there is the problem that separation efficiency is low.Therefore improve separator and separate effect
Rate, strengthens the capturing ability to fine particle, significant for improving the operation level of CFBB.
Summary of the invention
The purpose of this utility model is to provide turbine central tube structure in the bitubular of a kind of cyclone separator, improves whirlwind and divides
From the separation efficiency of device, improve the feature of environmental protection and performance driving economy that CFBB runs.
For reaching above-mentioned purpose, this utility model is achieved through the following technical solutions:
Turbine central tube structure in the bitubular of a kind of cyclone separator, including the central tube inserting Membrane Separator Cylinder for CFB Boiler 2 top
Urceolus 5, the central tube inner core 6 in centrally disposed cylinder urceolus 5, the center between centrally disposed cylinder urceolus 5 and central tube inner core 6
Turbine 7 in cylinder, the central tube kuppe 8 of centrally disposed cylinder inner core 6 inner bottom part；
In described central tube, turbine 7 uses spiral flow linear structure, the blade rotation direction of turbine 7 and flow rotation in central tube
Direction is different, and in central tube, the lobe numbers of turbine 7 is 1-8 sheet, and blade tangent line is that " blade is laid with the angle of circumferencial direction
Angle " it is 10 °～100 °；Described central tube kuppe 8 is warhead shape.
It is the 5%～20% of Membrane Separator Cylinder for CFB Boiler 2 height that described central tube urceolus 5 inserts degree of depth h of Membrane Separator Cylinder for CFB Boiler 2,
The diameter of central tube urceolus 5 is the 40～70% of Membrane Separator Cylinder for CFB Boiler 2 diameter, and central tube inner core 6 is central tube urceolus 5 diameter 10%
～60%.
In described central tube urceolus 5, central tube inner core 6, central tube, turbine 7, central tube kuppe 8 are heat-resistance stainless steel
Being integrally cast, heat-resistance stainless steel material is Cr25Ni20MoMnSiNRe, wall thickness 8～20mm.
Described central tube urceolus 5 top fixed form is fixed for free suspension type, central tube urceolus 5 and Membrane Separator Cylinder for CFB Boiler 2
Between be freely to coordinate, it is possible to relatively slide.
The warhead shape of described central tube kuppe 8 is shaped as tack, round end or oval head.
Described cyclone separator overall resistance is 0.5～1.5kPa, and separation efficiency is more than 99.9%.
Compared with prior art, this utility model has the advantage that
1. in the bitubular, turbine central tube slow down the periodicity of air-flow and wags the tail, and alleviates reentrainment of dust, improves whirlwind and divide
Flow Field Distribution in device, significantly improves separation efficiency.
2. in central tube, the design principle of aero-engine used for reference by turbine, and separator running resistance is low, and separation efficiency is high；
In central tube, the blade rotation direction of turbine is different with flow rotation direction, and air-flow so can carry out effective rectification, reduces resistance
Stream and secondary vortex flow.
3. central tube barrel lenght is only the half of conventional design, low cost of manufacture, and central tube is unlikely to deform, integral inclined
Central tube is long for service life, free of replacement, non-maintaining.
4. processing and manufacturing and in-site installation difficulty are low, and new-built unit and in-service unit are easy to realize.
Accompanying drawing illustrates:
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is overall structure schematic diagram (top view) of the present utility model.
Fig. 3 is turbine schematic diagram in central tube of the present utility model, and wherein, Fig. 3 a is 4 blades, and Fig. 3 a is 6 blades, Fig. 3 a
It is 8 blades.
Fig. 4 is central tube kuppe schematic diagram of the present utility model, and wherein, Fig. 4 a is oval head, and Fig. 4 a is tack, Fig. 4 a
For round end.
Fig. 5 is integral inclined central tube of the present utility model free suspension type fixed form schematic diagram.
Fig. 6 is turbine schematic diagram in central tube of the present utility model.
Fig. 7 is that this utility model and conventional center cylinder air-flow are wagged the tail the comparison of scope, and wherein, Fig. 7 a is in this utility model
Heart cylinder air-flow is wagged the tail scope, and Fig. 7 b is that conventional center cylinder air-flow is wagged the tail scope.
In figure:
1 separator inlet flue 2 Membrane Separator Cylinder for CFB Boiler 3 separator vertebral body
4 separator standpipe 5 central tube urceolus 6 central tube inner cores
Turbine 8 central tube kuppe in 7 central tubes
Detailed description of the invention:
Below in conjunction with accompanying drawing, the utility model is described in further detail.It will be appreciated by those skilled in the art that this utility model
Not being only limited to these detailed description of the invention, any improvement made on the basis of this utility model and change, all in this practicality
Within novel protection domain.
Detailed description of the invention one:
Certain newly-built 480t/h CFBB, sees Fig. 1 to Fig. 7, and 2 center cylinder of cyclone separators of this boiler use
Turbine central tube in the bitubular.Membrane Separator Cylinder for CFB Boiler 2 is connected with gas approach 1 and separator cone 3 respectively, and separator standpipe 4 sets
Putting in separator cone 3 bottom, central tube urceolus 5 is inserted from above in Membrane Separator Cylinder for CFB Boiler 2, fixing side, central tube urceolus 5 top
Formula is fixed for free suspension type, and is freely to coordinate between Membrane Separator Cylinder for CFB Boiler 2, can relatively slide time hot, without expanding dead point.
For improving separation efficiency, in the central tube within central tube urceolus 5 and central tube inner core 6, turbine 7 uses 4 blades.
It is the 10% of Membrane Separator Cylinder for CFB Boiler 2 height that central tube urceolus 5 inserts the degree of depth of separator, and central tube urceolus 5 diameter is separator cylinder
The 60% of body 2 diameter.
For improving intensity and service life, in central tube urceolus 5, central tube inner core 6 and central tube turbine 7 use heat-resisting not
Rust steel is integrally cast, and heat-resistance stainless steel material is Cr25Ni20MoMnSiNRe, wall thickness 15mm.
Above-mentioned cyclone separator overall resistance is 1.2kPa, separation efficiency 99.9%.
Detailed description of the invention two:
Certain in-service 240t/h CFBB, 2 center cylinder of cyclone separators of this boiler use conventional design.Run
Period on-load scarce capacity, former central tube insertion depth is the 30% of Membrane Separator Cylinder for CFB Boiler 2 height, and diameter is Membrane Separator Cylinder for CFB Boiler 2
The 40% of diameter.
In using the bitubular, boiler center cylinder of cyclone separator has been carried out changing transformation, outside central tube by turbine central tube mode
The degree of depth that cylinder 5 inserts separator is the 12% of Membrane Separator Cylinder for CFB Boiler 2 height, and central tube urceolus 5 diameter is Membrane Separator Cylinder for CFB Boiler 2 diameter
50%, central tube urceolus 5 top fixed form is fixed for free suspension type.
By above-mentioned transformation, boiler can realize oepration at full load, operation conditions and environmental protection characteristic and significantly improve.
Claims (6)
1. turbine central tube structure in the bitubular of a cyclone separator, it is characterised in that: include inserting Membrane Separator Cylinder for CFB Boiler (2) top
The central tube urceolus (5) in portion, the central tube inner core (6) in centrally disposed cylinder urceolus (5), centrally disposed cylinder urceolus (5) and
Turbine (7) in central tube between central tube inner core (6), the central tube kuppe (8) of centrally disposed cylinder inner core (6) inner bottom part；
In described central tube, turbine (7) uses spiral flow linear structure, the blade rotation direction of turbine (7) and flow rotation in central tube
Direction is different, and in central tube, the lobe numbers of turbine (7) is 1-8 sheet, and blade tangent line is that " blade is laid with the angle of circumferencial direction
Angle " it is 10 °～100 °；Described central tube kuppe (8) is warhead shape.
Turbine central tube structure in the bitubular of cyclone separator the most according to claim 1, it is characterised in that: in described
It is the 5%～20% of Membrane Separator Cylinder for CFB Boiler (2) height that heart cylinder urceolus (5) inserts degree of depth h of Membrane Separator Cylinder for CFB Boiler (2), central tube urceolus
(5) diameter is the 40～70% of Membrane Separator Cylinder for CFB Boiler (2) diameter, central tube inner core (6) be central tube urceolus (5) diameter 10%～
60%.
Turbine central tube structure in the bitubular of cyclone separator the most according to claim 1, it is characterised in that: in described
In heart cylinder urceolus (5), central tube inner core (6), central tube, turbine (7), central tube kuppe (8) are heat-resistance stainless steel one piece casting
Forming, heat-resistance stainless steel material is Cr25Ni20MoMnSiNRe, wall thickness 8～20mm.
Turbine central tube structure in the bitubular of cyclone separator the most according to claim 1, it is characterised in that: described center
Cylinder urceolus (5) top fixed form is fixed for free suspension type, is freely between central tube urceolus (5) and Membrane Separator Cylinder for CFB Boiler (2)
Coordinate, it is possible to relatively slide.
Turbine central tube structure in the bitubular of cyclone separator the most according to claim 1, it is characterised in that: described center
The warhead shape of cylinder kuppe (8) is shaped as tack, round end or oval head.
Turbine central tube structure in the bitubular of cyclone separator the most according to claim 1, it is characterised in that: described rotation
Wind separator overall resistance is 0.5～1.5kPa, and separation efficiency is more than 99.9%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620554507.6U CN205851124U (en) | 2016-06-07 | 2016-06-07 | Turbine central tube structure in the bitubular of a kind of cyclone separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620554507.6U CN205851124U (en) | 2016-06-07 | 2016-06-07 | Turbine central tube structure in the bitubular of a kind of cyclone separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205851124U true CN205851124U (en) | 2017-01-04 |
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ID=57638831
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620554507.6U Active CN205851124U (en) | 2016-06-07 | 2016-06-07 | Turbine central tube structure in the bitubular of a kind of cyclone separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205851124U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106000667A (en) * | 2016-06-07 | 2016-10-12 | 中国华能集团清洁能源技术研究院有限公司 | Double-barrel inner turbine central cylinder of cyclone separator |
-
2016
- 2016-06-07 CN CN201620554507.6U patent/CN205851124U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106000667A (en) * | 2016-06-07 | 2016-10-12 | 中国华能集团清洁能源技术研究院有限公司 | Double-barrel inner turbine central cylinder of cyclone separator |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |