| 发明名称 |
Method for determining the fatigue of a pump rotor of a gas turbopump |
| 摘要 |
A method for determining the fatigue of the pump rotor of a gas turbopump comprises the following method steps:
continuous determination of the rotational speed (n) of the pump rotor,determination of the local rotational speed maxima and minima of a temporal rotational speed profile under consideration,association of the rotational speed maxima and minima with each other to form pairs,determination of a pair fatigue value (L) for each of the rotational speed pairs, andaccumulation of all pair fatigue values (L) to form a total fatigue value (Ltot).
In this manner it is possible to determine the cyclic stress for the pump rotor of a vacuum pump and to include it in the calculation of a total fatigue value. |
| 申请公布号 |
US8751170(B2) |
申请公布日期 |
2014.06.10 |
| 申请号 |
US20080528210 |
申请日期 |
2008.01.16 |
| 申请人 |
Oerlikon Leybold Vacuum GmbH |
发明人 |
Blumenthal Roland;Froitzheim Michael;Palten Thomas;Bohry Dieter;Kiefer Manfred |
| 分类号 |
G01M5/00;F04B23/00;G06F17/40;G06F19/00 |
主分类号 |
G01M5/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for determining the fatigue of the pump rotor of a gas turbopump, comprising the following method steps:
continuously determining a rotational speed of the pump rotor, determining local rotational speed maxima and minima of a temporal rotational speed profile under consideration, associating the rotational speed maxima and minima with each other to form pairs, determining a pair fatigue value for each of the rotational speed pairs, accumulating the pair fatigue values to form a total fatigue value, and outputting a fatigue signal in response to the total fatigue value exceeding a total fatigue limit value in order to determine a fatigue state.
|
| 地址 |
Cologne DE |
