CN205135722U - A inferior final stage moving vane for making perfect on rotational speed thermoelectricity steam turbine - Google Patents
A inferior final stage moving vane for making perfect on rotational speed thermoelectricity steam turbine Download PDFInfo
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- CN205135722U CN205135722U CN201521003336.XU CN201521003336U CN205135722U CN 205135722 U CN205135722 U CN 205135722U CN 201521003336 U CN201521003336 U CN 201521003336U CN 205135722 U CN205135722 U CN 205135722U
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Abstract
A inferior final stage moving vane for making perfect on rotational speed thermoelectricity steam turbine relates to an inferior final stage moving vane that is used for on the steam turbine, the utility model discloses a solve the problem of the full rotational speed thermoelectricity turbine unit demand of steam extraction type that present blade can not satisfy superhigh pressure, heat then the high humidity, the bleed air flow is big. The utility model discloses the work blade reduces to top cross sectional area from the root gradually, and work blade molded lines be the variable cross section twisted blade, and the blade root is skewed tooth fir shape, and shrcud ring, work blade and blade root die forging from top to bottom are as an organic whole, and the side -mounting is admitted air on the blade upper portion of working has laser solution strengthening to distinguish, the work blade is 435mm from root to top height, and root axial width is 72.51mm, and the leaving area is 2.43m2, blade root axial width is 85mm, highly is 44.62mm, shrcud ring thickness is 10.38mm, and working face axial distance is 50.1mm. The utility model is used for the full rotational speed thermoelectricity turbine unit of 150MW grade.
Description
Technical field
The utility model relates to a kind of secondary final stage moving blade on steam turbine.
Background technique
Along with the continuous expansion in market, need to develop linear leaf in the secondary final stage of more adaptation different type of machines.The extraction steam unit that overseas market is a large amount of, there is ultrahigh pressure, do not heat then high humidity, Machine structural features that rate of air sucked in required is large, and existing blade is difficult to meet the demand in the design of shroud, blade root, and, pneumatic and structure-integrated design, makes the safe and efficient property of unit be difficult to be guaranteed.
Model utility content
The utility model object be can not meet ultrahigh pressure to solve existing blade, not heat then high humidity, the problem of steam-extracting type full rotating speed thermal power steam turbine group demand that rate of air sucked in required is large, provide a kind of secondary final stage moving blade on full rotating speed thermal power steam turbine.
Secondary final stage moving blade on full rotating speed thermal power steam turbine described in the utility model, it comprises working blade, blade root, shroud and laser solution strengthening district, working blade reduces gradually from root to the section area at top, the molded line of working blade is variable cross section twisted blade, blade root is helical teeth fir tree blade root, shroud, working blade and blade root from top to bottom die forging are integrated, and the air inlet side on working blade top is provided with laser solution strengthening district;
The height L of working blade from root to top is 435mm, and root axial width V is 72.51mm, and leaving area is 2.43m
2;
The axial width W of blade root is 85mm, and height K is 44.62mm;
The thickness h of shroud is 10.38mm, and the axial distance B1 of working surface is 50.1mm.
Advantage of the present utility model: 435mm linear leaf of the present utility model have employed the full three dimensional design of bending united forming, movable vane forms distortion long blade stage along leaf high twist, and vane tip adopts and carries shroud, reduce the loss, multi-disc gland sealing gear can be assembled in top, reduces gas leakage, improves unit efficiency; Easy to assembly, make moving vane form round linking by pretwist assembling, be conducive to frequency modulation, safe and reliable to operation.The utility model is mainly used in the full rotating speed thermal power steam turbine group of 150MW grade.
The utility model
Accompanying drawing explanation
Fig. 1 is the structural representation of the secondary final stage moving blade on full rotating speed thermal power steam turbine described in the utility model;
Fig. 2 is tomography superimposed schematic diagram in working blade each cross section in Fig. 1;
Fig. 3 is working blade schematic cross-section;
Fig. 4 is the partial enlarged drawing of in Fig. 3 II;
Fig. 5 is the partial enlarged drawing of in Fig. 3 I.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1 and Fig. 2, secondary final stage moving blade described in present embodiment on full rotating speed thermal power steam turbine, it comprises working blade 1, blade root 2, shroud 3 and laser solution strengthening district 4, working blade 1 reduces gradually from root to the section area at top, the molded line of working blade 1 is variable cross section twisted blade, blade root 2 is helical teeth fir tree blade root, shroud 3, working blade 1 and blade root 2 die forging are from top to bottom integrated, and the air inlet side on working blade 1 top is provided with laser solution strengthening district 4;
The height L of working blade 1 from root to top is 435mm, and root axial width V is 72.51mm, and leaving area is 2.43m
2;
The axial width W of blade root 2 is 85mm, and height K is 44.62mm;
The thickness h of shroud 3 is 10.38mm, and the axial distance B1 of working surface is 50.1mm.
In present embodiment, the molded line of working blade 1 is variable cross section twisted blade, that is: have relative torsion between adjacent two sections.
Embodiment two: present embodiment is described below in conjunction with Fig. 1, present embodiment is described further mode of execution one, and the root diameter (RD) of working blade 1 is 1340mm.
Embodiment three: present embodiment is described below in conjunction with Fig. 1, Fig. 3, Fig. 4 and Fig. 5, present embodiment is described further mode of execution one, working blade 1 root narrows from the width to the axial width at top, the excursion of axial width is 72.51mm-45.62mm, and root is to top established angle β
yscope be 72.84 °-40.12 °, the scope of molded line maximum ga(u)ge T is the scope of 13.48mm ~ 6.83mm, inlet angle α is 41.71 ° ~ 97.5 °, and the scope of exit angle θ is 36.21 ° ~ 21.79 °.
In present embodiment, adopt said structure parameter, while ensureing that the contour structure size of blade meets design requirement, blade also can be made easily to assemble.
In present embodiment, the axial width V that the height L of working blade 1 is respectively 58mm, 145mm, 232mm, 319mm, 406mm place corresponding respectively is: 70.52mm, 66.47mm, 61.61mm, 56.11mm, 48.60mm, corresponding chord length b respectively is: 76.05mm, 75.43mm, 74.82mm, 74.27mm, 72.25mm, corresponding established angle β
yrespectively be: 68.62 °, 62.28 °, 55.86 °, 49.41 °, 42.63 °, corresponding molded line maximum ga(u)ge T respectively is: 12.21mm, 10.37mm, 9.08mm, 7.95mm, 7.03mm, corresponding inlet angle α respectively is: 42.24 °, 57.51 °, 61.66 °, 79.38 °, 92.05 °, corresponding exit angle θ respectively is: 33.43 °, 31.35 °, 29.40 °, 25.76 °, 22.51 °.Adopt said structure parameter, while ensureing that the contour structure size of blade meets design requirement, blade also can be made easily to assemble.
In the utility model, when assembling this final stage moving blade, blade root 2 place loads lock sheet and avoids blade axial jump; Leaf top is the shroud 3 of self-crown damping; By twist recovery when the assembling of blade pine, operation, the shroud of adjacent blades contacts with shroud, makes moving vane form round linking.Pine assembling refers to and does not contact between the shroud of adjacent blades and shroud.
In the utility model, adopt fluid dynamic and structural strength complex optimum, solve pneumatic and structure-integrated design optimization problem, make the flow efficiency of 435mm blade and strength vibration characteristic all reach optimum.
In the utility model, on steam turbine time impeller, a circle comprises 124 moving vanes, in the safety reliability of strength vibration characteristic, static strength and guarantee unit, all can reach advanced level.
Claims (3)
1. the secondary final stage moving blade on full rotating speed thermal power steam turbine, it is characterized in that, it comprises working blade (1), blade root (2), shroud (3) and laser solution strengthening district (4), working blade (1) reduces gradually from root to the section area at top, the molded line of working blade (1) is variable cross section twisted blade, blade root (2) is helical teeth fir tree blade root, shroud (3), working blade (1) and blade root (2) die forging are from top to bottom integrated, the air inlet side on working blade (1) top is provided with laser solution strengthening district (4),
The height L of working blade (1) from root to top is 435mm, and root axial width V is 72.51mm, and leaving area is 2.43m
2;
The axial width W of blade root (2) is 85mm, and height K is 44.62mm;
The thickness h of shroud (3) is 10.38mm, and the axial distance B1 of working surface is 50.1mm.
2. the secondary final stage moving blade according to claim 1 on full rotating speed thermal power steam turbine, is characterized in that, the root diameter (RD) of working blade (1) is 1340mm.
3. the secondary final stage moving blade according to claim 1 on full rotating speed thermal power steam turbine, it is characterized in that, working blade (1) root narrows from the width to the axial width at top, top axial width V1 is 45.62mm, the excursion of axial width is 72.51mm-45.62mm, and root is to top established angle β
yscope be 72.84 °-40.12 °, the scope of molded line maximum ga(u)ge T is the scope of 13.48mm ~ 6.83mm, inlet angle α is 41.71 ° ~ 97.53 °, and the scope of exit angle θ is 36.21 ° ~ 21.79 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521003336.XU CN205135722U (en) | 2015-12-04 | 2015-12-04 | A inferior final stage moving vane for making perfect on rotational speed thermoelectricity steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521003336.XU CN205135722U (en) | 2015-12-04 | 2015-12-04 | A inferior final stage moving vane for making perfect on rotational speed thermoelectricity steam turbine |
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| CN205135722U true CN205135722U (en) | 2016-04-06 |
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| CN201521003336.XU Active CN205135722U (en) | 2015-12-04 | 2015-12-04 | A inferior final stage moving vane for making perfect on rotational speed thermoelectricity steam turbine |
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Cited By (3)
| 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 |
| CN111963253A (en) * | 2020-09-03 | 2020-11-20 | 杭州汽轮机股份有限公司 | Penultimate-stage moving blade of steam turbine of full-capacity feed pump of power station |
| CN112879102A (en) * | 2021-04-01 | 2021-06-01 | 哈尔滨汽轮机厂有限责任公司 | 1000mm final-stage moving blade for 3000rpm full-speed steam turbine |
-
2015
- 2015-12-04 CN CN201521003336.XU patent/CN205135722U/en active Active
Cited By (4)
| 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 |
| CN111963253A (en) * | 2020-09-03 | 2020-11-20 | 杭州汽轮机股份有限公司 | Penultimate-stage moving blade of steam turbine of full-capacity feed pump of power station |
| CN111963253B (en) * | 2020-09-03 | 2022-12-16 | 杭州汽轮动力集团股份有限公司 | Penultimate-stage moving blade of steam turbine of full-capacity feed pump of power station |
| CN112879102A (en) * | 2021-04-01 | 2021-06-01 | 哈尔滨汽轮机厂有限责任公司 | 1000mm final-stage moving blade for 3000rpm full-speed steam turbine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |