MANUFACTURING METHOD FOR STRUT SHIELD COLLAR OF GAS TURBINE EXHAUST DIFFUSER
    1.
    发明申请
    MANUFACTURING METHOD FOR STRUT SHIELD COLLAR OF GAS TURBINE EXHAUST DIFFUSER 审中-公开
    燃气轮机排气歧管机构的制造方法

    公开(公告)号:US20150044046A1

    公开(公告)日:2015-02-12

    申请号:US13961029

    申请日:2013-08-07

    IPC分类号: F01D25/08 B22D31/00 B22D25/02

    摘要: A method for casting a collar (44, 46) for a heat shield (36) of a strut (32) in a gas turbine exhaust section (20). A casting geometry (60, 70) is defined with extra wall thickness (56, 68) in an area of wall curvature (53, 54), which provides a flow path beyond a final geometry of the collar to facilitate a flow of molten metal in the mold (63, 64). The extra thickness is removed after casting, leaving the collar in its final geometry, which may have uniform wall thickness (T, T2). The extra thickness in the casting geometry may be provided by increased radius (R3) in the wall curvature and/or by casting feed portals (66, 68) that span the wall curvature between a tubular portion (50) and a flange (52) of the collar.

    摘要翻译: 一种用于铸造用于燃气轮机排气部分(20)中的支柱(32)的隔热罩(36)的轴环(44,46)的方法。 铸造几何形状(60,70)在壁曲率(53,54)的区域中被限定为额外的壁厚(56,68),其提供超过套环的最终几何形状的流动路径,以促进熔融金属的流动 在模具(63,64)中。 在铸造之后移除额外的厚度,使套环处于其最终几何形状,其可具有均匀的壁厚(T,T2)。 铸造几何形状中的额外厚度可以通过在壁曲率上增加的半径(R3)和/或通过跨越管状部分(50)和凸缘(52)之间的壁曲率的浇铸进料口(66,68)来提供, 的衣领。

    MANUFACTURING METHOD FOR EXHAUST DIFFUSER SHELL WITH STRUT SHIELD COLLAR AND JOINT FLANGE
    2.
    发明申请
    MANUFACTURING METHOD FOR EXHAUST DIFFUSER SHELL WITH STRUT SHIELD COLLAR AND JOINT FLANGE 审中-公开
    排气罩和连接法兰排风机的制造方法

    公开(公告)号:US20150040393A1

    公开(公告)日:2015-02-12

    申请号:US13961186

    申请日:2013-08-07

    IPC分类号: B23P15/00 F01D25/30

    摘要: Manufacture of a gas turbine exhaust diffuser shell (40A/40B) to achieve a final cross-sectional shell geometry by forming an opening (76) in the shell to receive a strut shield collar (46); forming a compensating outward bowing (78) of the shell around the opening that departs from a desired final shell geometry in an amount and shape that compensates for a welding shrinkage when welding the collar in the opening; and welding the collar in the opening. This produces the desired shell geometry after the welding. The collar may be welded proximate an edge (74) of the diffuser shell, such as along an intersection of an axial plane with the diffuser shell. A multi-bolt flange (68) may be welded to or otherwise formed along this edge for assembling an annular exhaust diffuser duct (38A-B, 40A/B) in an exhaust section (20) of a gas turbine engine.

    摘要翻译: 制造燃气轮机排气扩散器壳体(40A / 40B),以通过在壳体中形成开口(76)以接收支柱屏蔽套环(46)来实现最终横截面壳体几何形状; 形成围绕开口的壳体的补偿向外弯曲(78),该弯曲部分以一定量和形状偏离期望的最终壳体几何形状,该量和形状在焊接开口中的套环时补偿焊接收缩; 并将套环焊接在开口中。 这在焊接后产生所需的外壳几何形状。 套管可以在扩散器壳体的边缘(74)附近焊接,例如沿着与扩散器壳体的轴向平面的交点。 多个螺栓法兰(68)可以沿着该边缘焊接或以其他方式形成,用于在燃气涡轮发动机的排气部分(20)中组装环形排气扩散器管道(38A-B,40A / B)。

    EXHAUST DIFFUSER SHELL WITH FLANGE AND MANUFACTURING METHOD
    3.
    发明申请
    EXHAUST DIFFUSER SHELL WITH FLANGE AND MANUFACTURING METHOD 审中-公开
    带法兰和制造方法的排气扩散器壳

    公开(公告)号:US20150044039A1

    公开(公告)日:2015-02-12

    申请号:US13961920

    申请日:2013-08-08

    IPC分类号: F01D25/30

    摘要: Manufacture of an arcuate diffuser shell (38A/38B) assembled from an axially forward portion (38A) and an axially aft portion (38B), the two portions welded to respective sides of an arcuate flange (58A) via two respective pairs of circumferential welds (70A/70B and 72A/72B or 80/84 and 82/86 or 80/88 and 82/90). Each pair of welds comprises first and second welds on opposed surfaces (58, 74) of the shell. The first and second welds compensate each other with respect to welding process shrinkage, eliminating weld warping (68) of the shell. The first and second welds may have equal cross sectional areas or equal masses over a circumferential span of the flange.

    摘要翻译: 制造从轴向前部(38A)和轴向后部(38B)组装的弧形扩散器外壳(38A / 38B),两个部分通过两对相应的圆周焊接焊接到弓形凸缘(58A)的相应侧面 (70A / 70B和72A / 72B或80/84和82/86或80/88和82/90)。 每对焊缝包括在壳的相对表面(58,74)上的第一和第二焊缝。 第一和第二焊缝相对于焊接工艺收缩相互补偿,消除了外壳的焊缝翘曲(68)。 第一和第二焊缝在凸缘的圆周跨度上可以具有相等的横截面面积或相等的质量。