ISO MECHANICAL VIBRATION – EVALUATION OF MACHINE VIBRATION BY MEASUREMENTS ON ROTATING SHAFTS – PART 3: COUPLED . Mechanical vibration – Evaluation of machine vibration by measurements on rotating shafts – Part 3: Coupled industrial machines (ISO. Full text of “IS/ISO Mechanical vibration – evaluation of machine vibration by measurements on rotating shafts, Part 3: Coupled Industrial Machines”.
|Published (Last):||15 November 2018|
|PDF File Size:||19.30 Mb|
|ePub File Size:||13.19 Mb|
|Price:||Free* [*Free Regsitration Required]|
BS ISO 机械振动.通过对旋转轴的测量评估机械振动.耦合工业机械 – MBA智库文档
MED 28 1 Revisions British Standards are updated by amendment or revision. 791-93 sets in hydraulic power generating and pumping plants????? Part 3 Coupled industrial machine’ which was identical with ISO 3: A decision on what action can be taken, if any, should then be made after consideration of the maximum value of vibration and whether the machine has stabilized at a new condition.
Therefore, unless stated otherwise, this part of ISO always refers to relative vibration displacement. Evaluation criteria, based on previous 79119-3, are given for use as guidelines for assessing the vibratory conditions of such machines. Users are responsible for its correct application. However, they provide guidelines for ensuring that gross deficiencies or unrealistic requirements are avoided.
Different manufacturers may also have their own guidelines for limits when passing through critical speeds. In such cases, it is normally necessary to explain the reasons for this and, in particular, to confirm that the machine will not be endangered by operating with higher vibration values.
One last thing, ISO specs are copyrighted material and as such should not be attached to posts except in very limited sections. General guidelines  ISOMechanical vibration — Evaluation of machine vibration by measurements on non-rotating parts — Part 3: Membership Required We’re sorry.
Adobe is a trademark of Adobe Systems Incorporated. The values presented are the result of experience with machinery of this type and, if due regard is paid to them, acceptable operation can be expected. ISOMechanical vibration of non-reciprocating machines — Measurements on rotating shafts and evaluation criteria — Part 1: In downloading this file, parties accept therein the respons bility of not infringing Adobe’s licensing policy.
ISO 7919-3 | AMP Maintenance Forums
If only one measuring direction is used, care should be taken to ensure that it provides adequate information see ISO Different operational ALARM settings may then exist for different bearings on the machine, reflecting differences in dynamic loading and bearing support stiffnesses. This second edition cancels and replaces the first edition ISO Certain terminology and conventions are, however, not identical to those used in Indian Standards.
For undated references, the latest edition of the referenced document including any amendments applies. To provide a warning that a defined value of vibration has been reached or a significant change has occurred, at which remedial action may be necessary.
Vibration values within this zone are normally considered to be of sufficient severity to cause damage to the machine. The values chosen will normally be set relative to a baseline value determined from experience for the measurement position or direction for that particular machine.
Hence, the specification of detailed criteria for measurements of this type is beyond the scope of this part of ISO The recommended values illustrated in Figure A. Where there is no established baseline for example, with a new machine the initial ALARM setting should be based either on experience with other similar machines or relative to agreed acceptance values. Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service.
It presents the UK view on standards isp Europe and at the international level. The numerical values specified are not intended to serve as the only basis for vibration evaluation since, in general, the vibratory condition of a machine is assessed by consideration of both iiso shaft vibration and the associated structural vibration. 79193-
Consequently different values can apply for measurements taken at different bearings on the same rotor line. Such changes can be instantaneous or progressive with time and can indicate that damage has occurred or be a warning of an impending failure or some other irregularity. In industrial machines, shaft vibration relative to the bearing is normally measured. This equipment can be more sophisticated than that used for normal supervisory monitoring and its use and application requires specialist knowledge.
Different operational limits, reflecting differences in dynamic loading and support stiffness, may be specified for different measurement positions and directions. John from PA Leader. Quoting “The values given in Tables A.
In certain cases, there can be specific features associated with a particular machine, which would require different zone boundary values lower or higher to be used.
John from PA posted:. Users of British Standards should make sure that they possess the latest amendments or editions. For details of these and other benefits contact Membership Administration. This standard was originally published as IS Part 3: Various BSI electronic information services are 79919-3 available which give details on all its products and services.
Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee.
ISO | AMP Maintenance Forums
Higher values of vibration can be permitted at other measuring positions and under transient conditions, such as start-up and run-down including passage through critical speed ranges. In general, if an ALARM situation occurs, operation can continue for a period whilst investigations are carried out to identify the reason for the change in vibration and define any remedial action.
In certain cases, there can kso specific features associated with a particular machine, which would require different zone boundary values lower or higher isl be used. Consequently different values can apply for measurements taken at different bearings on the same rotor line.
Hence, the specification of detailed criteria for measurements of this type is beyond the scope of this part of ISO Users of Indian Standards should ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of ‘BIS Catalogue’ and ‘Standards: