CN207161148U - A kind of 350mm final stage moving blades on full speed thermal power steam turbine - Google Patents
A kind of 350mm final stage moving blades on full speed thermal power steam turbine Download PDFInfo
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- CN207161148U CN207161148U CN201721230034.5U CN201721230034U CN207161148U CN 207161148 U CN207161148 U CN 207161148U CN 201721230034 U CN201721230034 U CN 201721230034U CN 207161148 U CN207161148 U CN 207161148U
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Abstract
A kind of 350mm final stage moving blades on full speed thermal power steam turbine, it is related to a kind of 350mm final stage moving blades, and in particular to a kind of 350mm final stage moving blades on full speed thermal power steam turbine.The utility model is larger in order to solve existing full speed thermal power steam turbine final stage moving blade energy loss, the problem of causing unit efficiency to reduce.The utility model is made up of blade working part, blade root and shroud, from top to bottom die forging is integral for shroud, blade working part and blade root, the molded line of blade working part is variable cross-section twisted blade, there is relative torsion between i.e. adjacent two sections, the area of section at blade working part from root to top is gradually reduced, the height of blade working part is 350mm, the root axial width of blade working part is 100.12mm, the root diameter (RD) of blade working part is 1750mm, and the leaving area of blade working part is 2.31m2, blade root is fork type blade root, and the axial width of blade root is 110mm, and the thickness of shroud is 20mm, and shroud working face axial distance is 76.78mm.The utility model belongs to steam turbine field.
Description
Technical field
It the utility model is related to a kind of 350mm final stage moving blades, and in particular to a kind of to be used on full speed thermal power steam turbine
350mm final stage moving blades, belong to steam turbine field.
Background technology
2001, State Economic and Trade Commission, national development plan committee, the Ministry of Construction issued《Cogeneration Project feasibility study
Science and technology regulation》1.6.7 bar：" in conditional area, in heating period it is contemplated that extraction and condensing unit low-vacuum-operating, recirculated water supply
The scheme of heating, recover conventional operation in non-heating period ".Meeting country using low vacuum circulating water heating at this stage existing has
Close regulation.Therefore developing a kind of new exhaust stage blade for present 300MW fired power generating units low vacuum modification just becomes certainty.
Utility model content
The utility model is larger to solve existing full speed thermal power steam turbine final stage moving blade energy loss, causes unit efficiency
The problem of reduction, and then propose a kind of 350mm final stage moving blades on full speed thermal power steam turbine.
The utility model adopts the technical scheme that to solve the above problems：The utility model is by blade working part, leaf
Root and shroud composition, from top to bottom die forging is integral for shroud, blade working part and blade root, and the molded line of blade working part is change
Section twisted blade, i.e., there is relative torsion between adjacent two sections, blade working part gradually subtracts from the area of section at root to top
Small, the height of blade working part is 350mm, and the root axial width of blade working part is 100.12mm, blade working portion
The root diameter (RD) divided is 1750mm, and the leaving area of blade working part is 2.31m2, blade root is fork type blade root, the axial direction of blade root
Width is 110mm, and the thickness of shroud is 20mm, and shroud working face axial distance is 76.78mm.
Further, the root axial width of the blade working part to blade working part top axial width
Excursion is 100.12mm~74.65mm, the excursion of chord length is 110.74mm~126.65mm, the change model of established angle
The excursion enclosed for 65.13 °~36.16 °, molded line maximum gauge is 17.07mm~10.30mm, the excursion of inlet angle
For 56.19 °~105.60 °, the excursion of the angle of outlet is 28.51 °~22.08 °.
Further, the height of the blade working part is respectively corresponding to 70mm, 140mm, 210mm, 280mm place
The axial width of blade working part respectively is：94.44mm, 89.01mm, 83.85mm, 79.12mm, corresponding chord length
It respectively is：107.75mm, 107.35mm, 110.49mm, 117.49mm, corresponding established angle respectively are：
61.64 °, 56.34 °, 49.54 °, 42.41 °, corresponding molded line maximum gauge respectively is：18.01mm、17.35mm、
14.91mm, 12.48mm, corresponding inlet angle respectively are：It is 50.91 °, 53.56 °, 68.12 °, 92.32 °, corresponding
The angle of outlet respectively is：26.84°、25.22°、23.90°、22.91°.
Further, the total height of the blade root is 72.13mm.
The beneficial effects of the utility model are：First, 350mm linear leafs of the present invention with one-dimensional/accurate three-dimensional/full three-dimensional pneumatic,
Based on thermodynamic analysis calculates, the full three dimensional design of bending united forming is employed, movable vane forms distortion linear leaf along leaf high twist
Level, vane tip reduce loss using shroud is carried, improve unit efficiency；The present invention applies the full rotating speed fire in 300MW grades
In electric Steam Turbine, it is easy to ad eundem unit to carry out low vacuum modification use.2nd, the present invention uses fluid dynamic and structural strength
Complex optimum, solve the problems, such as pneumatic/structure-integrated design optimization, make the flow efficiency of 350mm blades and strength vibration special
Property has all reached optimal.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the top view of shroud 3；
Fig. 3 is each section tomography overlapping schematic diagram in blade working part 1；
Fig. 4 is the typical cross section schematic diagram of blade working part 1；
Fig. 5 is Fig. 4 II partial enlarged drawing；
Fig. 6 is Fig. 4 I partial enlarged drawing.
Embodiment
Embodiment one：Illustrate present embodiment with reference to Fig. 1 to Fig. 4, one kind described in present embodiment is used at full speed
350mm final stage moving blades on thermal power steam turbine, it is made up of blade working part 1, blade root 2 and shroud 3, shroud 3, blade work
Making part 1 and blade root 2, from top to bottom die forging is integral, and the molded line of blade working part 1 is variable cross-section twisted blade, i.e., adjacent two-section
There is relative torsion between face, the height for the blade working part 1 that the area of section at blade working part 1 from root to top is gradually reduced
Degree L is 350mm, and the root axial width V of blade working part 1 is 100.12mm, and the root diameter (RD) of blade working part 1 is
1750mm, the leaving area of blade working part 1 is 2.31m2, blade root 2 is fork type blade root, and the axial width W of blade root 2 is
110mm, the thickness h of shroud 3 is 20mm, and the working face axial distance B1 of shroud 3 is 76.78mm.
Embodiment two：Illustrate present embodiment, a kind of use described in present embodiment with reference to Fig. 1, Fig. 4, Fig. 5, Fig. 6
In the blade working part 1 of the 350mm final stage moving blades on full speed thermal power steam turbine root axial width V to blade working portion
Point 1 top axial width V1 excursion is 100.12mm~74.65mm, chord length b excursion be 110.74mm~
126.65mm, established angle βyExcursion be 65.13 °~36.16 °, molded line maximum gauge T excursion be 17.07mm
~10.30mm, inlet angle α excursion are 56.19 °~105.60 °, angle of outlet θ excursion for 28.51 °~
22.08°.Other compositions and annexation are identical with embodiment one.
Embodiment three：Illustrate present embodiment, a kind of use described in present embodiment with reference to Fig. 1, Fig. 4, Fig. 5, Fig. 6
Height L in the blade working part 1 of the 350mm final stage moving blades on full speed thermal power steam turbine be respectively 70mm, 140mm,
The axial width V of blade working part 1 corresponding to 210mm, 280mm place respectively is：94.44mm、89.01mm、
83.85mm, 79.12mm, corresponding chord length b respectively are：107.75mm, 107.35mm, 110.49mm, 117.49mm,
Corresponding established angle βyIt respectively is：61.64 °, 56.34 °, 49.54 °, 42.41 °, corresponding molded line maximum gauge T
It respectively is：18.01mm, 17.35mm, 14.91mm, 12.48mm, corresponding inlet angle α respectively are：50.91°、
53.56 °, 68.12 °, 92.32 °, corresponding angle of outlet θ respectively is：26.84°、25.22°、23.90°、22.91°.Its
It is formed and annexation is identical with embodiment two.
Embodiment four：Illustrate present embodiment with reference to Fig. 1, one kind described in present embodiment is used for full speed thermoelectricity vapour
The total height K of the blade root 2 of 350mm final stage moving blades on turbine is 72.13mm.Other compositions and annexation and specific implementation
Mode three is identical.
Each section design parameter such as following table：
Claims (4)
1. a kind of 350mm final stage moving blades on full speed thermal power steam turbine, it by blade working part (1), blade root (2) and
Shroud (3) forms, and shroud (3), blade working part (1) and blade root (2) die forging from top to bottom are integral, blade working part
(1) molded line is variable cross-section twisted blade, i.e., has relative torsion between adjacent two sections, and blade working part (1) is from root to top
Area of section be gradually reduced, the height (L) of blade working part (1) is 350mm, the root axial direction of blade working part (1)
Width (V) is 100.12mm, and the root diameter (RD) of blade working part (1) is 1750mm, the leaving area of blade working part (1)
For 2.31m2, blade root (2) is fork type blade root, and the axial width (W) of blade root (2) is 110mm, and the thickness (h) of shroud (3) is
20mm, shroud (3) working face axial distance (B1) are 76.78mm.
A kind of 2. 350mm final stage moving blades on full speed thermal power steam turbine according to claim 1, it is characterised in that：
The root axial width (V) of the blade working part (1) to the top axial width (V1) of blade working part (1) change
Scope is 100.12mm~74.65mm, the excursion of chord length (b) is 110.74mm~126.65mm, established angle (βy) change
Change scope is 65.13 °~36.16 °, the excursion of molded line maximum gauge (T) is 17.07mm~10.30mm, inlet angle (α)
Excursion be 56.19 °~105.60 °, the excursion of the angle of outlet (θ) is 28.51 °~22.08 °.
A kind of 3. 350mm final stage moving blades on full speed thermal power steam turbine according to claim 2, it is characterised in that：
The height (L) of the blade working part (1) is respectively blade working portion corresponding to 70mm, 140mm, 210mm, 280mm place
The axial width (V) of (1) is divided respectively to be：94.44mm, 89.01mm, 83.85mm, 79.12mm, corresponding chord length (b)
It respectively is：107.75mm, 107.35mm, 110.49mm, 117.49mm, corresponding established angle (βy) respectively be：
61.64 °, 56.34 °, 49.54 °, 42.41 °, corresponding molded line maximum gauge (T) respectively is：18.01mm、
17.35mm, 14.91mm, 12.48mm, corresponding inlet angle (α) respectively are：50.91°、53.56°、68.12°、
92.32 °, the corresponding angle of outlet (θ) respectively is：26.84°、25.22°、23.90°、22.91°.
A kind of 4. 350mm final stage moving blades on full speed thermal power steam turbine according to claim 3, it is characterised in that：
The total height (K) of the blade root (2) is 72.13mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721230034.5U CN207161148U (en) | 2017-09-22 | 2017-09-22 | A kind of 350mm final stage moving blades on full speed thermal power steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721230034.5U CN207161148U (en) | 2017-09-22 | 2017-09-22 | A kind of 350mm final stage moving blades on full speed thermal power steam turbine |
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| CN207161148U true CN207161148U (en) | 2018-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989792A (en) * | 2019-05-24 | 2019-07-09 | 哈尔滨汽轮机厂有限责任公司 | Full rotary speed steam turbine final stage moving blade |
-
2017
- 2017-09-22 CN CN201721230034.5U patent/CN207161148U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989792A (en) * | 2019-05-24 | 2019-07-09 | 哈尔滨汽轮机厂有限责任公司 | Full rotary speed steam turbine final stage moving blade |
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