CN201448130U - Flow guide device of air cooling exhausting pipeline - Google Patents
Flow guide device of air cooling exhausting pipeline Download PDFInfo
- Publication number
- CN201448130U CN201448130U CN2009200339405U CN200920033940U CN201448130U CN 201448130 U CN201448130 U CN 201448130U CN 2009200339405 U CN2009200339405 U CN 2009200339405U CN 200920033940 U CN200920033940 U CN 200920033940U CN 201448130 U CN201448130 U CN 201448130U
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- CN
- China
- Prior art keywords
- flow guide
- air cooling
- guide device
- guide vane
- cooling blow
- 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.)
- Expired - Lifetime
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Abstract
The utility model belongs to the technical field of steam turbine air cooling exhaust, and more particularly relates to a flow guide device of an air cooling exhausting pipeline. The flow guide device of the air cooling exhausting pipeline comprises a shell, flow guide blades and a support rod piece; and the flow guide device is arranged at the 90-degree elbow part of the air cooling exhausting pipeline, the support rod piece is arranged in the elliptical shell of the glow guide device and is provided with the flow guide blades, and the flow guide blades are arranged with unequal distances. The flow guide device has simple structure, high reliability, less number of the flow guide blades and adoption of the arrangement thereof with unequal distances, and long service life.
Description
Technical field
The utility model belongs to steam turbine air cooling steam discharge technical field, is specifically related to a kind of air cooling blow-off line flow guide device.
Background technique
In Direct Air-cooled Unit, turbine discharge enters into air cooling condenser through the air cooling blow-off line.Because the influence that blow-off line is arranged, each arm flow and resistance deviation are bigger, the resistance size of exhaust passage has influence on the setting of steam turbine exhaust pressure, whether the flow that is assigned in the air cooling condenser evenly can have influence on the operational efficiency of air cooling condenser and the antifreeze maintenance in winter, also is the big problem that is directly connected to generator set economical operation and safety.Therefore, be necessary the flow guide device in the air cooling blow-off line is further studied, propose effective current-sharing drag reduction scheme.
The deficiency of flow guide device mainly contains the following aspects in the prior art: 1. guide vane quantity nearly more than ten, has caused the waste of material and the increase of flow resistance; 2. existing guide vane material selects not consider the erosion corrosion of flowing medium to guide plate that working life is shorter.
Summary of the invention
More at the guide vane quantity that the ducted flow guide device of prior art hollow cold type vapour exists, flow resistance is big, not anti-flowing medium is to the erosion corrosion of guide plate and the technical problem of lacking working life, the utility model provides a kind of air cooling blow-off line flow guide device, comprise shell, guide vane, supporting rod, 90 ° of bend parts at the air cooling blow-off line are provided with flow guide device, in the oval-shaped shell of flow guide device, be provided with supporting rod, supporting rod is provided with guide vane, and guide vane adopts unequal-interval to arrange.
The spacing that described guide vane is provided with greater than inside turn place in the spacing of the setting at the outer turning of blow-off line.
Described guide vane is no less than a slice, and described guide vane has the arc shaped surface of molding, and the segment angle of its arc shaped surface is 72 °.
Described guide vane has the shape of molding.Described guide vane end be shaped as circle.Being shaped as of described guide vane end is streamlined.Described guide vane is made by corrosion-resistant material.
The quantity of described supporting rod is at least one.
The flow guide device of air cooling blow-off line of the present utility model is simple in structure, reliability is high, engineering investment cost is low.Guide vane negligible amounts and adopt unequal-interval to arrange had not only been saved material but also had been reduced the flow resistance of piping.The guide vane form adopts fillet type or streamlined, can play good current-sharing drag-reduction effect.Guide vane adopts stainless steel, and not only wear-resisting, corrosion-resistant also have a good mechanical performance, and long service life can satisfy the engineering usage requirement.
Description of drawings
Fig. 1 is the utility model flow guide device mounting point schematic representation in the air cooling blow-off line.
Fig. 2 is an A-A schematic representation among flow guide device Fig. 1 in the utility model.
Fig. 3 is a B-B schematic representation in the utility model flow guide device structural drawing 2.
Fig. 4 equidistantly is not provided with schematic representation for the utility model guide vane.
Fig. 5 is a guide vane segment angle schematic representation in the utility model flow guide device.
Fig. 6 is a guide vane fillet type schematic representation in the utility model flow guide device.
Fig. 7 is the streamlined schematic representation of guide vane in the utility model flow guide device.
Embodiment:
As shown in the figure, flow guide device of the present utility model, be arranged on 90 ° of bend parts of air cooling blow-off line, in the oval-shaped shell 1 of flow guide device, be provided with supporting rod 3, supporting rod 3 is provided with guide vane 2, and strut 3 passes guide vane 2, and guide vane 2 connects by eyelet welding disposed thereon and is fixed on the supporting rod 3, described guide vane 2 is provided with eight, and guide vane 2 adopts unequal-interval to arrange.Want big in the outer turning of blow-off line blade pitgh with respect to inside turn place blade pitgh, little for inside turn place blade pitgh with respect to outer turning blade pitgh, the layout of guide vane 2 such as Fig. 2-shown in Figure 4, the length dimension of each part guide vane 2 determines according to the position at oval-shaped shell 1.Supporting rod 3 is provided with 9 altogether, and the form of employing 3 * 3 is welded on the circumference of oval-shaped shell 1.Guide vane 2 and inner support rod member 3 material selection stainless steels, perhaps other resistant materials are made.
The segment angle of the arc shaped surface of guide vane 2 is 72 °, sees Fig. 5.The end shape of guide vane 2 adopts fillet type or streamlined, sees Fig. 6-Fig. 7.
The oval-shaped shell 1 of flow guide device is carbon steel (Q235B) manufacturing.Adopt welding processing, attachment weld and the compactness of solder joint maintenance longitudinally.The requirement among the GB/T12604 is satisfied in welding inspection, and manufacturer's standard satisfies the requirement among the GB150 " Steel Pressure Vessels ".Guide vane 2 and supporting structure will have enough rigidity and intensity, guide vane 2 moldings.Pretreatment: all inner and outer surface must carry out derusting by sandblasting to be handled, according to GB8923 " steel surface rusting grade and derusting grade before the application ", derusting grade Sa2.5.Fillet welding is adopted in all welding, welds tightly with corrosion protection from the back side.Priming paint is brushed 2 layers, and layer minimum dry film thickness is 40 μ m (look optional), and priming paint adopts epoxy zinc rich primer.
The characteristics such as that the utility model guiding device has is easy to process, long service life, erosion resistant can be used in engineering and provide a preferably solution for air cooling blow-off line current-sharing drag reduction.
Claims (8)
1. air cooling blow-off line flow guide device, comprise shell (1), guide vane (2), supporting rod (3), it is characterized in that: 90 ° of bend parts at the air cooling blow-off line are provided with flow guide device, in the oval-shaped shell (1) of flow guide device, be provided with supporting rod (3), supporting rod (3) is provided with guide vane (2), and guide vane (2) adopts unequal-interval to arrange.
2. air cooling blow-off line flow guide device according to claim 1 is characterized in that: the spacing that described guide vane (2) is provided with greater than inside turn place in the spacing of the setting at the outer turning of blow-off line.
3. air cooling blow-off line flow guide device according to claim 1 is characterized in that: described guide vane (2) is no less than a slice.
4. air cooling blow-off line flow guide device according to claim 1 is characterized in that: described guide vane (2) has the arc shaped surface of molding, and the segment angle of its arc shaped surface is 72 °.
5. air cooling blow-off line flow guide device according to claim 4 is characterized in that: described guide vane (2) end be shaped as circle.
6. air cooling blow-off line flow guide device according to claim 4 is characterized in that: being shaped as of described guide vane (2) end is streamlined.
7. according to each described air cooling blow-off line flow guide device of claim 1-6, it is characterized in that: described guide vane (2) is made by corrosion-resistant material.
8. air cooling blow-off line flow guide device according to claim 1 is characterized in that: the quantity of described supporting rod (3) is at least one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200339405U CN201448130U (en) | 2009-07-17 | 2009-07-17 | Flow guide device of air cooling exhausting pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200339405U CN201448130U (en) | 2009-07-17 | 2009-07-17 | Flow guide device of air cooling exhausting pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201448130U true CN201448130U (en) | 2010-05-05 |
Family
ID=42552845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200339405U Expired - Lifetime CN201448130U (en) | 2009-07-17 | 2009-07-17 | Flow guide device of air cooling exhausting pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201448130U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900481A (en) * | 2012-11-08 | 2013-01-30 | 北京东方东楼电力科技有限公司 | Diversion tile |
| CN108590785A (en) * | 2018-03-05 | 2018-09-28 | 杭州国能汽轮工程有限公司 | A kind of design method of constant-current stabilizer and constant-current stabilizer |
-
2009
- 2009-07-17 CN CN2009200339405U patent/CN201448130U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900481A (en) * | 2012-11-08 | 2013-01-30 | 北京东方东楼电力科技有限公司 | Diversion tile |
| CN108590785A (en) * | 2018-03-05 | 2018-09-28 | 杭州国能汽轮工程有限公司 | A kind of design method of constant-current stabilizer and constant-current stabilizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE OF CHINA Free format text: FORMER NAME: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE, CHINA POWER ENGINEERING CONSULTING GROUP CORPORATION |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 710075 Xi'an province high tech Development Zone, unity South Road, No. 22, No. Patentee after: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING GROUP Address before: 710075 Xi'an province high tech Development Zone, unity South Road, No. 22, No. Patentee before: Northwest Electric Power Design Institute, China Power Engineering Consulting Group Corporation |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100505 |
|
| CX01 | Expiry of patent term |