石油、石化和天然气工业.机械动力传输用软管.通用设备

[中文适用范围]： 本国际标准规定了石油、石化和天然气工业中通用应用场合下，用于在两台机器的旋转轴之间传递动力的联轴器要求。此类应用通常要求联轴器在转速不超过 4000 r/min 的条件下传递动力，且适用于第一阶横向临界转速高于运行速度范围的刚性轴机器。经协议，也可用于超出这些限制的应用。本国际标准适用于设计用于在不给耦合机器施加过大机械载荷的情况下，适应轴的平行（或横向）偏移、角度不对中和轴向位移的联轴器。本国际标准涵盖的联轴器包括齿轮（及其他机械接触类型）、金属挠性元件和各种弹性体类型。此类联轴器可以是全金属结构，也可以包含非金属材料（如复合材料）部件。本国际标准涵盖联轴器的设计、材料、检验和测试，以及联轴器与轴的连接方法（包括锥形衬套和其他专有装置）。本国际标准不适用于特殊类型的联轴器，如离合器、液压、涡流、刚性及径向花键类型。本国际标准未定义特定应用场合下联轴器类型选择的标准。 [外文原描述]： ISO 14691:2008 specifies the requirements for couplings for the transmission of power between the rotating shafts of two machines for general-purpose applications in the petroleum, petrochemical and natural gas industries. Such applications typically require couplings to transmit power at speeds not exceeding 4 000 r/min, between machines in which the first lateral critical speed is above the running speed range (stiff-shaft machines). ISO 14691:2008 can, by agreement, be used for applications outside these limits. ISO 14691:2008 is applicable to couplings designed to accommodate parallel (or lateral) offset, angular misalignment and axial displacement of the shafts without imposing excessive mechanical loading on the coupled machines. Couplings covered by ISO 14691:2008 include gear (and other mechanical contact types), metallic flexible-element and various elastomeric types. Such couplings can be of all metal construction or can include components of non-metallic materials, such as composites. ISO 14691:2008 covers design, materials of construction, inspection and testing of couplings and methods of attachment of the coupling to the shafts (including tapered sleeve and other proprietary devices). ISO 14691:2008 does not apply to special types of couplings, such as clutch, hydraulic, eddy-current, rigid and radial-spline types. ISO 14691:2008 does not define criteria for the selection of coupling types for specific applications.