CN201581934U - Half-speed high-capacity nuclear turbine last-stage movable blade - Google Patents

Half-speed high-capacity nuclear turbine last-stage movable blade Download PDF

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Publication number
CN201581934U
CN201581934U CN 200920213477 CN200920213477U CN201581934U CN 201581934 U CN201581934 U CN 201581934U CN 200920213477 CN200920213477 CN 200920213477 CN 200920213477 U CN200920213477 U CN 200920213477U CN 201581934 U CN201581934 U CN 201581934U
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blade
root
cross
section
height
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CN 200920213477
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Chinese (zh)
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周英
程凯
陆伟
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上海电气电站设备有限公司
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Abstract

The utility model discloses a half-speed high-capacity nuclear turbine last-stage movable blade which comprises a shroud ring, a blade working part, an intermediate and a blade root, wherein the blade working part is provided with a tiepiece boss; the shaped wire of the blade working part is a variable-cross-section twisted blade, and the area of the cross section thereof diminishes gradually along with the rise of the height of the blade, the two adjacent cross sections twist relatively, the height of the blade working part is 1710mm, and the blade root is fir type blade root with a round angle and concentrated low stress. The last-stage movable blade with the height of 1710mm increases the area of the blade, thus effectively reducing the exhaust loss. The shaped wire of the blade working part is the variable-cross-section twisted blade designed in a three-dimensional manner, thus having better running performance with variable working situations in air-powered aspect. By being designed into a fir type structure, the blade root can greatly reduce concentrated stress, decrease the maximum stress of the blade root and a pulley groove, and improve the strength performances of resisting low cycle fatigue and stress corrosion.

Description

半速大容量核电汽轮机末级动叶片 Nuclear Steam half-speed large-capacity final stage moving blade

技术领域 FIELD

[0001] 本实用新型涉及一种汽轮机叶片,特别涉及一种大容量核电汽轮机上用的末级动叶片。 [0001] The present invention relates to a turbine blade, particularly to the final stage moving blade of a high capacity, the Nuclear Steam Turbine.

背景技术 Background technique

[0002] 末级动叶片是大容量核电汽轮机的关键部件,目前已投入运行的末级动叶片大多为排汽面积15_20m2的1400mm高度等级。 [0002] The final stage rotor blade is a key component of the high-capacity Steam Turbine, it has been put into operation last stage moving blades mostly exhaust area of ​​1400mm height level 15_20m2. 而目前的核电汽轮机已开始采用第三代反应堆机组进行发电,由于第三代反应堆机组容量比目前1000MW等级的容量增加20% -80%,这样就使得目前的1400mm高度等级的末级动叶片在气动性和强度等方面不能满足使用要求, 特别是在沿海和中、北部等采用低温冷却水的地区这种现象更为严重,目前市场上也还尚没有一种末级动叶片可以满足第三代反应堆机组的使用要求。 And the current turbine in nuclear reactors has been started by the third generation unit generating electric power, since the third generation reactor unit capacity increased by 20% -80% higher than the current capacity of 1000MW, so that the final stage moving blade height 1400mm current level in terms of aerodynamics and strength can not meet the requirements, particularly in areas of low-temperature cooling water along the coast and in the north and so this phenomenon is more serious, is currently on the market yet still there a third last stage blades meet on behalf of the reactor units of the requirements.

发明内容 SUMMARY

[0003] 针对上述现有技术的不足,本实用新型要解决的技术问题是提供一种1710mm高度等级的汽轮机末级动叶片以满足在第三代反应堆机组上的使用要求。 [0003] The above-described deficiencies of the prior art, the present invention is to solve the technical problem of providing a highly stratified 1710mm turbine final stage rotor blade in order to meet the requirements on the third-generation reactor units.

[0004] 为解决上述技术问题,本实用新型采用如下技术方案: [0004] In order to solve the above problems, the present invention adopts the following technical solution:

[0005] 一种半速大容量核电汽轮机末级动叶片,包括围带、叶片工作部、中间体和叶根, 所述叶片工作部上设有拉筋凸台,所述叶片工作部的型线为变截面扭叶片,随叶片截面高度的升高其截面向积逐渐减小,相邻两截面间有相对扭转,所述叶片工作部的高度为1710mm,将所述叶片工作部十等分取截面,截面号为1-1至11-11,各截面基本参数如下表: [0005] A half-speed large-capacity Nuclear Steam last stage moving blade, comprising a shroud, a blade working portion, and the intermediate blade root, the blade is provided with a boss reinforcement work portion, the working portion of the blade type line twisted blade variable cross-section, with the section height of the blade to increase its cross-sectional volume decreases, there is relative rotation between the two adjacent cross-section, the height of the working portion of the blade is 1710mm, the blade working portion tenths take cross-sectional No. 1-1 to 11-11, each section substantially parameters as follows:

[0006] [0006]

<table>table see original document page 3</column></row> <table><table>table see original document page 4</column></row> <table> <Table> table see original document page 3 </ column> </ row> <table> <table> table see original document page 4 </ column> </ row> <table>

[0007] 所述叶根为大圆角、低应力集中的揪树型叶根。 [0007] The root fillet is large, stress concentration is low pulling tree root.

[0008] 优选的,所述叶根的轴向宽度为440mm。 [0008] Preferably, the axial width of the blade root is 440mm.

[0009] 优选的,所述叶根底部的两侧开有凹槽。 [0009] Preferably, the bottom sides of the blade root are grooved.

[0010] 优选的,所述拉筋凸台为椭圆状。 [0010] Preferably, the reinforcement boss elliptical.

[0011] 上述技术方案具有如下有益效果:本实用新型的末级动叶片工作部的高度为1710mm,增加了叶片的面积,使排气损失量得到有效的降低。 [0011] The solution has the following advantages: the present invention novel height of the working part of the final stage moving blade 1710mm, increasing the area of ​​the blades, the exhaust gas loss is effectively reduced. 叶片工作部的型线为三维设计的变截面扭叶片,在气动性能方面具有更好的变工况运行性能。 Working blade profile portion of variable cross-section three-dimensionally designed twisted blade, having better performance Variable operating conditions in the aerodynamic performance. 叶根设计成揪树型结构,可大幅度的减少应力集中,降低叶根和轮槽的最大应力,提高抗低周疲劳及抗应力腐蚀的强度性能。 Designed pulling blade root tree structure, stress concentration can be greatly reduced, reducing the maximum stress in the blade root and groove wheel, improved low cycle fatigue stress corrosion resistance and resistance to strength.

附图说明 BRIEF DESCRIPTION

[0012] 图1为本实用新型实施例的主视图。 [0012] Figure 1 is an embodiment of the invention a front view.

[0013] 图2为本实用新型实施例的侧视图。 [0013] FIG. 2 is a side view of an embodiment of the invention.

[0014] 图3为本实用新型实施例的俯视图。 [0014] FIG. 3 is a plan view of an embodiment of the invention.

[0015] 图4为本实用新型实施例工作部的型线积叠示意图。 Profile [0015] FIG. 4 embodiment of the present invention of stacking a schematic view of the working portion.

[0016] 图5为本实用新型实施例在工作转速下围带的俯视图。 [0016] FIG. 5 is a plan view of the invention embodiment the working speed shroud.

[0017] 图6为本实用新型实施例在工作转速下拉筋凸台的俯视图。 [0017] FIG. 6 embodiment of the present invention a plan view of the boss tie bar at the operating speed.

具体实施方式 detailed description

[0018] 下面结合附图对本实用新型的优选实施例进行详细的介绍。 [0018] Hereinafter, preferred embodiments of the present invention embodiments described in detail in conjunction with the accompanying drawings.

[0019] 如图1、2、3所示,该半速大容量核电汽轮机末级动叶片自上而下包括围带3、叶片工作部1、中间体5和叶根2,叶片工作部1的中部设有拉筋凸台4,拉筋凸台4呈椭圆状。 [0019] As shown, the half-speed large-capacity Steam Turbine blade last stage 2,3 comprises a shroud 3 from top to bottom, the blade working portion 1, the intermediate 2 and a root 5, the blade working portion 1 the central projection 4 is provided with reinforcement, reinforcement bosses 4 oval shape. 叶片工作部1的型线为变截面扭叶片,该种叶片的截面形状沿截面高度的变化而变化,随叶片截面高度的升高其截面面积逐渐减小,而且相邻两截面间有相对扭转。 Working blade profile portion 1 is twisted blade variable cross-section, the sectional shape changes along the height of the cross section of the blade varies species, with the blade section height is increased cross-sectional area thereof is gradually decreased, and there is relative rotation between two adjacent sectional . 叶片工作部1 的高度H为1710mm,将叶片工作部1十等分取截面,截面号为1_1至11_11 (如图4所示), Working blade height H 1 is 1710mm, the work of the blade portion 1 taken decile cross-sectional numbers 1_1 to 11_11 (FIG. 4),

其各截面基本参数如下表所示: The basic parameters of each cross-section thereof shown in the following table:

[0020]<table>table see original document page 5</column></row> <table> [0020] <table> table see original document page 5 </ column> </ row> <table>

[0022] 叶根2是在有限元应力场优化基础上开发的大圆角、低应力集中的揪树型结构, 采用这种揪树型结构可大幅减少应力集中,降低叶根和轮槽之间的最大应力,提高提高抗低周疲劳及抗应力腐蚀的强度性能。 [0022] Optimizing the root fillet 2 are developed on the basis of the finite element stress field, low stress concentration pulling the tree structure, the tree structure using between such pulling can significantly reduce stress concentration, reducing the blade root and groove wheel the maximum stress and improve low cycle fatigue improve stress corrosion resistance and resistance to strength. 叶根2轴向宽度B为440mm。 The axial root width B 2 of 440mm. 叶根2底部两侧开有凹槽6,凹槽6可在装配时装入撑条来避免叶片轴向窜动。 2 on both sides of the root groove bottom 6 is opened, the recess 6 may be fitted into the fashion to avoid the blade stays axial movement.

[0023] 上述末级动叶片为静态单片结构,在进行汽轮机组装时,可在相邻两个末级动叶片的围带3的工作而31之间留l-2mm的间隙(如图5所示),在相邻两个末级动叶片的拉筋凸台4的工作面41之间留l-2mm的间隙(如图6所示),这样当汽轮机工作时,在工作转速作用下相邻围带3、拉筋凸台4产生扭转恢复,在离心力的作用下相互耦合,相邻工作面重合,使叶片整圈成组从而可有效提高叶片的动频率,提高叶片的刚度,使叶片具有较小调频阶数要求,大幅度降低叶片的动应力。 [0023] The final stage rotor blade static monolithic structure, during assembly of the steam turbine, the tape 3 can work in two adjacent final stage moving blade of the circumference l 2mm-gap 31 between the left (FIG. 5 shown), two adjacent final stage moving blade reinforcement bosses left l-2mm gap (FIG. 6) between the working face 4 of 41, so that when the turbine work, the role of working speed at 3 adjacent shrouds, stretch recovery boss 4 torsionally coupled to each other under the action of centrifugal force, the adjacent face overlap, the entire blade ring group which can effectively increase the frequency of the movable blade, to improve the stiffness of the blade, so that blades having a small FM order requirements, significantly reduce the dynamic stresses in the blade.

[0024] 综上所述,该半速大容量核电汽轮机末级动叶片具有如下优点:1)叶片工作部的高度增加为1710mm,增加了叶片的面积,使排气损失得到有效的降低;2)叶片工作部的型线为三维设计的变截面扭叶片,在气动性能方面具有更好的变工况运行性能;3)叶根设计成揪树型结构,可大幅度的减少应力集中,降低叶根和轮槽的最大应力,提高抗低周疲劳及抗应力腐蚀的强度性能;4)叶片采用先进的自带围带整圈自锁结构形式,具有调频振型少,频率稳定性好,抗颤振性能好等特点,能够满足在恶劣强度环境下的安全性,5)装配方便,利用离心力的反扭矩形成整圈自锁阻尼,比由机械结构形成的整圈效应更为可靠,有利于调整和调频。 [0024] In summary, the half-speed large-capacity Nuclear Steam final stage moving blades has the following advantages: 1) increasing the height of the working portion of the blade is 1710mm, increasing the area of ​​the blades, the exhaust gas loss is effectively reduced; 2 ) blade profile for the working part of the three-dimensional design variable cross-section twisted blade, having better operating performance in variable conditions aerodynamic performance; 3) is designed to pull the root tree structure, stress concentration can be greatly reduced, reducing blade root and the maximum stress of the wheel groove, low cycle fatigue and improve the anti-stress corrosion resistance of the strength properties; 4) carrying the blade shroud advanced self-locking structure in the form of full circle, having less vibration mode FM, frequency stability, performance and good anti-chatter characteristics to meet the security strength in harsh environments, 5) easy assembly, full circle is formed by the centrifugal force of the self-locking anti-damping torque effect more reliable than the full circle is formed by the mechanical structure, help adjust and FM. 本叶片可适用于AP1000及今后CAP+核电汽轮发电机组,无论是在经济性、 安全可靠性方面均达到国际先进水平。 This blade can be applied to future CAP + and AP1000 nuclear power turbine generator, both in the economy, security and reliability have reached the international advanced level.

[0025] 以上对本实用新型实施例所提供的半速大容量核电汽轮机末级动叶片进行了详细介绍,对于本领域的一般技术人员,依据本实用新型实施例的思想,在具体实施方式及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本实用新型的限制,凡依本实用新型设计思想所做的任何改变都在本实用新型的保护范围之内。 [0025] or more of the half-speed large-capacity Nuclear Steam final stage moving blade of the present invention is provided by the embodiments were described in detail, those of ordinary skill in the art based on the idea of ​​the present invention embodiment, specific embodiments and applications may make modifications to the range at the conclusion, the specification shall not be construed as limitations of this new utility, where any changes made under this utility model design ideas are within the scope of protection of the present invention.

Claims (4)

  1. 一种半速大容量核电汽轮机末级动叶片,其包括围带、叶片工作部、中间体和叶根,所述叶片工作部上设有拉筋凸台,其特征在于,所述叶片工作部的型线为变截面扭叶片,随叶片截面高度的升高其截面面积逐渐减小,相邻两截面间有相对扭转,所述叶片工作部的高度为1710mm,将所述叶片工作部十等分取截面,截面号为1-1至11-11,各截面基本参数如下表: 截面号 轴向宽度 mm 弦长 mm 出汽边厚度 mm 安装角 ° 最大厚度 mm 截面高度 mm 截面面积 cm2 1-1 419.38 427.27 4.18 11.00 45.75 0 145.61 2-2 393.26 408.66 2.48 15.67 46.32 171 132.95 3-3 364.45 390.03 2.26 20.77 44.69 342 116.73 4-4 333.76 373.90 2.24 26.74 41.33 513 97.28 5-5 297.38 358.03 2.24 33.82 36.83 684 76.75 6-6 257.87 346.33 2.15 41.89 30.93 855 60.10 7-7 226.60 339.43 2.18 48.18 25.83 1026 47.66 8-8 194.57 335 A semi-speed large-capacity Nuclear Steam final stage moving blade comprising a shroud, a blade working portion, and the intermediate blade root, the blade is provided with a boss reinforcement work portion, characterized in that the working portion of the blade variable cross-section profile of the twisted blade, with the blade section height is increased cross-sectional area thereof is gradually decreased, there is relative rotation between the two adjacent cross-section, the height of the working portion of the blade is 1710mm, the blade working portion decile dispensing a cross-sectional sectional No. 1-1 to 11-11, basic parameters of each cross section as follows: number width mm axial section of a chord length mm height mm mm thickness sectional area of ​​the vapor side installation angle ° mm maximum thickness sectional cm2 1- 1 4.18 11.00 45.75 419.38 427.27 393.26 408.66 0 145.61 2.48 15.67 2-2 46.32 3-3 364.45 171 132.95 342 116.73 390.03 2.26 20.77 44.69 333.76 373.90 2.24 26.74 41.33 4-4 513 97.28 5-5 684 36.83 33.82 297.38 358.03 2.24 76.75 6- 6 257.87 346.33 41.89 2.15 30.93 855 60.10 2.18 7-7 226.60 339.43 194.57 48.18 25.83 1026 47.66 8-8 335 .13 2.11 54.59 21.49 1197 38.35 9-9 152.47 325.48 2.07 62.20 17.31 1368 30.07 10-10 116.73 321.92 2.08 68.93 13.97 1539 28.67 11-11 84.22 319.37 1.98 74.94 9.63 1710 24.57所述叶根为大圆角、低应力集中的枞树型叶根。 .13 2.11 54.59 21.49 1197 38.35 62.20 2.07 9-9 17.31 1368 152.47 325.48 116.73 321.92 30.07 10-10 28.67 11-11 2.08 68.93 13.97 84.22 1539 74.94 9.63 1710 24.57 1.98 319.37 The root fillet is large, stress concentration is low fir tree root.
  2. 2.根据权利要求1所述的半速大容量核电汽轮机末级动叶片,其特征在于:所述叶根的轴向宽度为440mm。 The half-speed large-capacity turbine final stage rotor blade Nuclear according to claim 1, wherein: the axial width of the blade root is 440mm.
  3. 3.根据权利要求1所述的半速大容量核电汽轮机末级动叶片,其特征在于:所述叶根底部的两侧开有凹槽。 3. The half-speed large-capacity Nuclear Steam final stage rotor blade according to claim 1, characterized in that: both sides of the blade root of the groove opening.
  4. 4.根据权利要求1所述的半速大容量核电汽轮机末级动叶片,其特征在于:所述拉筋凸台为椭圆状。 The half-speed large-capacity Nuclear Steam final stage moving blade according to claim 1, wherein: said elliptical boss tie bar.
CN 200920213477 2009-12-21 2009-12-21 Half-speed high-capacity nuclear turbine last-stage movable blade CN201581934U (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102102545A (en) * 2011-03-22 2011-06-22 东方电气集团东方汽轮机有限公司 Half-rotation speed nuclear power high-bearing-capacity fir-shaped blade root and sheave groove structure
CN102108881A (en) * 2011-03-22 2011-06-29 东方电气集团东方汽轮机有限公司 Secondary final stage blade for half-RPM (Revolution per Minute) nuclear turbine
CN102108883A (en) * 2011-03-29 2011-06-29 东方电气集团东方汽轮机有限公司 Semi-rotation speed nuclear turbine final stage moving blade
CN102108882A (en) * 2011-03-22 2011-06-29 东方电气集团东方汽轮机有限公司 Last stage blade for half speed nuclear power steam turbine
CN102251812A (en) * 2011-06-23 2011-11-23 哈尔滨汽轮机厂有限责任公司 1800mm last-stage movable blade used on half-revolving speed nuclear turbine
CN102979582A (en) * 2012-11-09 2013-03-20 哈尔滨汽轮机厂有限责任公司 712.5 mm last-stage moving blade used for high power combined-cycle steam turbine
GB2498259A (en) * 2012-01-04 2013-07-10 Gen Electric Last stage turbine blade design to reduce turndown vibration
CN103742203A (en) * 2014-02-11 2014-04-23 上海电气电站设备有限公司 Final-stage long blade of steam turbine
CN105240054A (en) * 2014-07-07 2016-01-13 上海电气电站设备有限公司 Penultimate-stage moving blade for half-speed high-capacity nuclear turbine
CN105317466B (en) * 2014-07-07 2017-03-22 上海电气电站设备有限公司 Times and the final stage moving blade half speed for a large capacity of the Nuclear Steam Turbine

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102108882B (en) 2011-03-22 2013-11-27 东方电气集团东方汽轮机有限公司 Last stage blade for half speed nuclear power steam turbine
CN102108881A (en) * 2011-03-22 2011-06-29 东方电气集团东方汽轮机有限公司 Secondary final stage blade for half-RPM (Revolution per Minute) nuclear turbine
CN102102545B (en) 2011-03-22 2013-11-27 东方电气集团东方汽轮机有限公司 Half-rotation speed nuclear power high-bearing-capacity fir-shaped blade root and sheave groove structure
CN102108882A (en) * 2011-03-22 2011-06-29 东方电气集团东方汽轮机有限公司 Last stage blade for half speed nuclear power steam turbine
CN102108881B (en) 2011-03-22 2013-11-27 东方电气集团东方汽轮机有限公司 Secondary final stage blade for half-RPM (Revolution per Minute) nuclear turbine
CN102102545A (en) * 2011-03-22 2011-06-22 东方电气集团东方汽轮机有限公司 Half-rotation speed nuclear power high-bearing-capacity fir-shaped blade root and sheave groove structure
CN102108883A (en) * 2011-03-29 2011-06-29 东方电气集团东方汽轮机有限公司 Semi-rotation speed nuclear turbine final stage moving blade
CN102108883B (en) 2011-03-29 2014-01-01 东方电气集团东方汽轮机有限公司 Semi-rotation speed nuclear turbine final stage moving blade
CN102251812A (en) * 2011-06-23 2011-11-23 哈尔滨汽轮机厂有限责任公司 1800mm last-stage movable blade used on half-revolving speed nuclear turbine
GB2498259A (en) * 2012-01-04 2013-07-10 Gen Electric Last stage turbine blade design to reduce turndown vibration
CN102979582A (en) * 2012-11-09 2013-03-20 哈尔滨汽轮机厂有限责任公司 712.5 mm last-stage moving blade used for high power combined-cycle steam turbine
CN103742203A (en) * 2014-02-11 2014-04-23 上海电气电站设备有限公司 Final-stage long blade of steam turbine
CN103742203B (en) * 2014-02-11 2016-04-27 上海电气电站设备有限公司 Turbine Last Stage Blade
CN105240054A (en) * 2014-07-07 2016-01-13 上海电气电站设备有限公司 Penultimate-stage moving blade for half-speed high-capacity nuclear turbine
CN105317466B (en) * 2014-07-07 2017-03-22 上海电气电站设备有限公司 Times and the final stage moving blade half speed for a large capacity of the Nuclear Steam Turbine
CN105240054B (en) * 2014-07-07 2017-03-22 上海电气电站设备有限公司 For half-speed large-capacity secondary Steam Turbine final stage moving blade

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