CN202851090U - 900-millimeter last-stage moving blades for combined cycle steam turbine - Google Patents
900-millimeter last-stage moving blades for combined cycle steam turbine Download PDFInfo
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- CN202851090U CN202851090U CN 201220583553 CN201220583553U CN202851090U CN 202851090 U CN202851090 U CN 202851090U CN 201220583553 CN201220583553 CN 201220583553 CN 201220583553 U CN201220583553 U CN 201220583553U CN 202851090 U CN202851090 U CN 202851090U
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- working part
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- blade working
- steam turbine
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Abstract
The utility model relates to 900-millimeter last-stage moving blades, in particular to the 900 millimeters last-stage moving blades for a combined cycle steam turbine. The 900-millimeter last-stage moving blades for the combined cycle steam turbine aims to solve the problems that the blades of the existing combined cycle steam turbine are shorter and the last-stage moving blades of the conventional condensing steam turbine lack security. According to the 900 millimeters last-stage moving blades for the combined cycle steam turbine, a shroud, blade working parts and blade roots are forged into a whole from the top to the bottom, a boss tie piece is located in the middle of the blade working parts and is formed with the blade working parts into a whole, the stellite alloy sheets are attached to the intake side of the upper portion of the blade working parts, the height of the blade working parts is 900 millimeters, the axial width of the blade roots is 186 millimeters, the diameter of the blade roots is 1375 millimeters, the exhaust area of the blade working parts is 6.43 square meters, and the axial width of the blade roots is 205 millimeters. The 900-millimeter last-stage moving blades for the combined cycle steam turbine is used for the combined cycle steam turbine.
Description
Technical field
The utility model relates to a kind of 900mm final stage moving blade, is specifically related to a kind of for the 900mm final stage moving blade on the combination circulation steam turbine.
Background technique
The characteristics such as combined cycle generating unit is efficient with it, environmental protection, flexible operation become the general orientation that present power industry develops.Along with the Combined Cycle Unit single-machine capacity increases, in the urgent need to longer final stage moving blade.Simultaneously, compare with conventional condensation steamer, the Combined Cycle Unit back pressure is high, start and stop are frequent, strength vibration and Safety performance to final stage moving blade require more harsh, the blade requirement is longer, Security is higher, so that combination circulation steam turbine linear leaf design difficulty is far above the linear leaf design of conventional condensing turbine.
The model utility content
The utility model is shorter for solving existing combination circulation steam turbine final stage moving blade, and uses the problem of conventional condensing turbine final stage moving blade Security deficiency, and then proposes a kind of for the 900mm final stage moving blade on the combination circulation steam turbine.
The utility model is to address the above problem the technological scheme of taking to be: the utility model comprises the blade working part, blade root, shroud, boss tie pieces and stellite alloy film, shroud, blade working part and blade root die forging from top to bottom are integral, boss tie pieces is positioned at the middle part of blade working part, and partly make one with blade working, the molded line of blade working part is the variable cross section twisted blade, the section area of blade working part from root to the top reduces gradually, the air inlet side on blade working part top is posted stellite alloy film, it is characterized in that: the height of blade working part is 900mm, the root axial width of blade working part is 186mm, the root diameter (RD) of blade working part is 1375mm, and the leaving area of blade working part is 6.43m
2, blade root is the vertical tree-like blade root of helical teeth, and the axial width of blade root is 205mm, and the thickness of shroud (h) is 25mm, and shroud working surface axial distance is 42.47m.
The beneficial effects of the utility model are: one, the utility model 900mm linear leaf is calculated as the basis with one dimension/standard three-dimensional/full three-dimensional pneumatic, thermodynamic analysis, adopted the full three dimensional design of bending united forming, movable vane forms the distortion long blade stage along the leaf high twist, its blade leaving area is large, can adapt to the demand of high-power combination circulation steam turbine, and vane tip adopts and carries shroud, reduce the loss, multi-disc sealing gland tooth can be assembled in the top, reduces gas leakage, improves unit efficiency; Easy to assembly, make moving vane form round linking by giving turning round to assemble, be conducive to frequency modulation, safe and reliable to operation.Two, the utility model 900mm linear leaf adopts full three-dimensional non-steady Aerodynamic Characteristic Calculation Methods, in more wide in range back pressure ranges, can keep higher pneumatic efficiency, and off design performance is good.Three, the utility model adopts fluid dynamic and structural strength complex optimum, has solved pneumatic/structure-integrated design optimization problem, makes the flow efficiency of 900mm blade and strength vibration characteristic all reach optimum.Four, the moving vane of the equal length grade of the complete alternative conventional condensing turbine of this model utility, and Security is higher, no matter is in Economy, and the safety reliability aspect of strength vibration characteristic, static strength and assurance unit all reaches advanced level.
Description of drawings
Fig. 1 is overall structure schematic representation of the present utility model, Fig. 2 is the plan view of shroud, Fig. 3 is the superimposed schematic representation of blade working each cross section tomography of part, Fig. 4 is the plan view of boss tie pieces, X ' expression boss tie pieces X-axis direction among the figure, Y ' expression boss tie pieces Y direction, Fig. 5 is blade working part typical cross section schematic representation, Fig. 6 is the II partial enlarged drawing of Fig. 5, and Fig. 7 is the I partial enlarged drawing of Fig. 5.
Embodiment
Embodiment one: present embodiment is described in conjunction with Fig. 1 to Fig. 5, present embodiment is described a kind ofly to comprise blade working part 1 for the 900mm final stage moving blade on the combination circulation steam turbine, blade root 2, shroud 3, boss tie pieces 4 and stellite alloy film 5, shroud 3, blade working part 1 and blade root 2 die forging from top to bottom are integral, boss tie pieces 4 is positioned at the middle part of blade working part 1, and make one with blade working part 1, the molded line of blade working part 1 is the variable cross section twisted blade, the section area of blade working part 1 from root to the top reduces gradually, the air inlet side on blade working part 1 top is posted stellite alloy film 5, the height L of blade working part 1 is 900mm, the root axial width V of blade working part 1 is 186mm, the root diameter (RD) of blade working part 1 is 1375mm, and the leaving area of blade working part 1 is 6.43m
2, blade root 2 is the vertical tree-like blade root of helical teeth, and the axial width W of blade root 2 is 205mm, and the thickness h of shroud 3 is 25mm, and shroud 3 working surface axial distance B1 are 42.47mm.
In assembling during whole blade, the blade root place lock sheet of packing into is avoided the blade axial jump in the present embodiment; The leaf top is self-crown damping shroud; Whole blade pine assembling (not contacting between the shroud that loose assembling is exactly adjacent blades and shroud, lacing wire and the lacing wire), by twist recovery, the shroud of adjacent blades contacts with shroud, lacing wire contacts with lacing wire during operation, makes moving vane form round linking.
Embodiment two: present embodiment is described in conjunction with Fig. 1, Fig. 5, Fig. 6 and Fig. 7, the root axial width V of the described a kind of blade working part 1 for the 900mm final stage moving blade on the combination circulation steam turbine of present embodiment is 186mm～40.14mm to the excursion of the top axial width V1 of blade working part 1, and the excursion of chord length b is 188.09mm～144.57mm, established angle β
yExcursion be that 82 °～15.82 °, the excursion of molded line maximum ga(u)ge T are that the excursion of 20.88mm～6.68mm, inlet angle α is 61.46 °～147.37 °, the excursion of exit angle θ is 39.74 °～32.91 °.
The technique effect of present embodiment is: adopt the said structure parameter, when the contour structure size that guarantees blade meets design requirement, blade is assembled easily.
Other composition and annexation are identical with embodiment one.
Embodiment three: present embodiment is described in conjunction with Fig. 1, Fig. 5, Fig. 6 and Fig. 7, when the described a kind of blade working part 1 for the 900mm final stage moving blade on the combination circulation steam turbine of present embodiment is 90mm by root to overhead height, corresponding axial width is 164.13mm, corresponding chord length b is 166.60mm, corresponding established angle β
yBe 80.59 °, corresponding molded line maximum ga(u)ge T is 20.98mm, and corresponding inlet angle α is 53.61 °, and corresponding exit angle θ is 39.32 °; When blade working part 1 was 270mm by root to overhead height, corresponding axial width was 132.67mm, and corresponding chord length b is 145.86mm, corresponding established angle β
yBe 70.69 °, corresponding molded line maximum ga(u)ge T is 19.99mm, and corresponding inlet angle α is 55.55 °, and corresponding exit angle θ is 35.25 °; When blade working part 1 was 450mm by root to overhead height, corresponding axial width was 105.84mm, and corresponding chord length b is 134.62mm, corresponding established angle β
yBe 51.89 °, corresponding molded line maximum ga(u)ge T is 14.77mm, and corresponding inlet angle α is 73.64 °, and corresponding exit angle θ is 29.96 °; When blade working part 1 was 630mm by root to overhead height, corresponding axial width was 72.24mm, and corresponding chord length b is 142.73mm, corresponding established angle β
yBe 30.20 °, corresponding molded line maximum ga(u)ge T is 10.03mm, and corresponding inlet angle α is 117.70 °, and corresponding exit angle θ is 34.36 °; When blade working part 1 was 810mm by root to overhead height, corresponding axial width was 43.57mm, and corresponding chord length b is 142.73mm, corresponding established angle β
yBe 17.03 °, corresponding molded line maximum ga(u)ge T is 6.86mm, and corresponding inlet angle α is 143.14 °, and corresponding exit angle θ is 33.16 °.
The technique effect of present embodiment is: adopt the said structure parameter, when the contour structure size that guarantees blade meets design requirement, blade is assembled easily.
Other composition and annexation are identical with embodiment two.
Embodiment four: in conjunction with Fig. 1 present embodiment is described, the total height K of the described a kind of blade root 2 for the 900mm final stage moving blade on the combination circulation steam turbine of present embodiment is 59.7mm.
The technique effect of present embodiment is: this structure makes the blade wheel rim of packing into securely, and assembling is stable, safe and reliable.
Other composition and annexation are identical with embodiment three.
Embodiment five: in conjunction with Fig. 4 present embodiment is described, the cross section of the described a kind of boss tie pieces 4 for the 900mm final stage moving blade on the combination circulation steam turbine of present embodiment is oval, and its major axis f is 25mm, and minor axis t is 10mm.Other composition and annexation are identical with embodiment one.
All circles' mask body parameter such as following table:
Claims (5)
1. 900mm final stage moving blade that is used on the combination circulation steam turbine, it comprises blade working part (1), blade root (2), shroud (3), boss tie pieces (4) and stellite alloy film (5), shroud (3), blade working part (1) and blade root (2) die forging from top to bottom are integral, boss tie pieces (4) is positioned at the middle part of blade working part (1), and make one with blade working part (1), the molded line of blade working part (1) is the variable cross section twisted blade, blade working part (1) section area from root to the top reduces gradually, the air inlet side on blade working part (1) top is posted stellite alloy film (5), it is characterized in that: the height (L) of blade working part (1) is 900mm, the root axial width (V) of blade working part (1) is 186mm, the root diameter (RD) of blade working part (1) is 1375mm, and the leaving area of blade working part (1) is 6.43m
2, blade root (2) is the vertical tree-like blade root of helical teeth, and the axial width (W) of blade root (2) is 205mm, and the thickness (h) of shroud (3) is 25mm, and shroud (3) working surface axial distance (B1) is 42.47mm.
2. described a kind of for the 900mm final stage moving blade on the combination circulation steam turbine according to claim 1, it is characterized in that: blade working part (1) root to the excursion of the axial width at blade working part (1) top is 186mm～40.14mm, the excursion of chord length (b) is 188.09mm～144.57mm, established angle (β
y) excursion be 82 °～15.82 °, the excursion of molded line maximum ga(u)ge (T) is 20.88mm～6.68mm, the excursion of inlet angle (α) is 61.46 °～147.37 °, and the excursion of exit angle (θ) is 39.74 °～32.91 °.
3. described a kind of for the 900mm final stage moving blade on the combination circulation steam turbine according to claim 2, it is characterized in that: when blade working part (1) is 90mm by root to overhead height, corresponding axial width is 164.13mm, corresponding chord length (b) is 166.60mm, corresponding established angle (β
y) be 80.59 °, corresponding molded line maximum ga(u)ge (T) is 20.98mm, and corresponding inlet angle (α) is 53.61 °, and corresponding exit angle (θ) is 39.32 °; When blade working part (1) was 270mm by root to overhead height, corresponding axial width was 132.67mm, and corresponding chord length (b) is 145.86mm, corresponding established angle (β
y) be 70.69 °, corresponding molded line maximum ga(u)ge (T) is 19.99mm, and corresponding inlet angle (α) is 55.55 °, and corresponding exit angle (θ) is 35.25 °; When blade working part (1) was 450mm by root to overhead height, corresponding axial width was 105.84mm, and corresponding chord length (b) is 134.62mm, corresponding established angle (β
y) be 51.89 °, corresponding molded line maximum ga(u)ge (T) is 14.77mm, and corresponding inlet angle (α) is 73.64 °, and corresponding exit angle (θ) is 29.96 °; When blade working part (1) was 630mm by root to overhead height, corresponding axial width was 72.24mm, and corresponding chord length (b) is 142.73mm, corresponding established angle (β
y) be 30.20 °, corresponding molded line maximum ga(u)ge (T) is 10.03mm, and corresponding inlet angle (α) is 117.70 °, and corresponding exit angle (θ) is 34.36 °; When blade working part (1) was 810mm by root to overhead height, corresponding axial width was 43.57mm, and corresponding chord length (b) is 142.73mm, corresponding established angle (β
y) be 17.03 °, corresponding molded line maximum ga(u)ge (T) is 6.86mm, and corresponding inlet angle (α) is 143.14 °, and corresponding exit angle (θ) is 33.16 °.
4. described a kind of for the 900mm final stage moving blade on the combination circulation steam turbine according to claim 3, it is characterized in that: the total height (K) of blade root (2) is 59.7mm.
5. described a kind of for the 900mm final stage moving blade on the combination circulation steam turbine according to claim 1, it is characterized in that: the cross section of boss tie pieces (4) is for oval, and its major axis (f) is 25mm, and minor axis (t) is 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220583553 CN202851090U (en) | 2012-11-07 | 2012-11-07 | 900-millimeter last-stage moving blades for combined cycle steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220583553 CN202851090U (en) | 2012-11-07 | 2012-11-07 | 900-millimeter last-stage moving blades for combined cycle steam turbine |
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| Publication Number | Publication Date |
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| CN202851090U true CN202851090U (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220583553 Expired - Lifetime CN202851090U (en) | 2012-11-07 | 2012-11-07 | 900-millimeter last-stage moving blades for combined cycle steam turbine |
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| CN (1) | CN202851090U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926821A (en) * | 2012-11-07 | 2013-02-13 | 哈尔滨汽轮机厂有限责任公司 | 900mm last stage moving blade for combined cycle steam turbine |
| CN103806947A (en) * | 2013-10-30 | 2014-05-21 | 杭州汽轮机股份有限公司 | Large-load last stage blade with steam exhaust area of 5.0 m<2> |
-
2012
- 2012-11-07 CN CN 201220583553 patent/CN202851090U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926821A (en) * | 2012-11-07 | 2013-02-13 | 哈尔滨汽轮机厂有限责任公司 | 900mm last stage moving blade for combined cycle steam turbine |
| CN103806947A (en) * | 2013-10-30 | 2014-05-21 | 杭州汽轮机股份有限公司 | Large-load last stage blade with steam exhaust area of 5.0 m<2> |
| CN103806947B (en) * | 2013-10-30 | 2015-08-26 | 杭州汽轮机股份有限公司 | Leaving area 5.0m 2large load exhaust stage blade |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |
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| CX01 | Expiry of patent term |