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    • 5. 发明授权
    • 터보기계
    • 涡轮机
    • KR100263646B1
    • 2000-09-01
    • KR1019980029066
    • 1998-07-20
    • 가부시끼가이샤 히다치 세이사꾸쇼가부시키가이샤 히다치 인더스트리즈
    • 우에야마요시하루다까기미찌유끼다까노야스시이와세유끼지이다미찌아끼다나까사다시나가오까요시히로요시다데쯔야
    • F04D1/06
    • PURPOSE: To reduce radiation sounds from a body surface, piping, cover or the like by constructing integrally a diffuser side plate, diffuser blade and backboard blade, providing separately a stage and transmitting a vibrational force from the diffuser blade and backboard blade through a fitting part of the diffuser side plate and stage to the stage without transmitting the vibrational force directly to the stage. CONSTITUTION: A casing 5 receives a blade 4a of a diffuser 4, side plates 4b and back board blade 2 of both sides thereof made integrally and an annular stage 3 separately attached, so that the fitting part of the casing and stage through which a vibrational force is transmitted is reduced to a portion of the diffuser side plate 4b and stage 3. While the vibrating force of fluid discharged from a blade 7a of an impeller 7 to act on the blade 4a of the diffuser 4 is transmitted from the diffuser side plate 4b to the stage 3, the vibrational force is damped at the fitting part. Thus, the fluid performance is not little affected and radiation sounds from the body surface, piping, coupling cover or the like of a turbo-fluid machine body can be economically effectively reduced.
    • 目的:通过一体地构造扩散器侧板,扩散器叶片和背板叶片来减少身体表面,管道,盖板等的辐射声音,分别提供一个台架,并通过一个配件从扩散器叶片和背板叶片传递振动力 扩散器侧板的一部分和舞台到舞台,而不将振动力直接传递到舞台。 构成:壳体5接收扩散器4的叶片4a,其两侧的侧板4b和后板叶片2整体制成,并且环形台3分开地附接,使得壳体和台架的嵌合部分通过其振动 力被传递到扩散器侧板4b和阶段3的一部分。当从叶轮7的叶片7a排出的作用在扩散器4的叶片4a上的流体的振动力从扩散器侧板 4b到阶段3,振动力在配合部分被阻尼。 因此,可以有效地降低流体性能受影响,并且能够有效地减少来自涡轮流体机体的体表,管道,联轴器盖等的辐射声。