Early De­tec­tion and Preven­tion of Rotor Da­m­age

Con­sis­tent ro­ta­tion­al be­hav­ior - Rel­e­vance

Today, the de­vel­op­ment of gas and steam tur­bines tends more and more to­wards larg­er tur­bines with high­er ef­fi­cien­cy. At the same time, the de­mands placed on in­di­vid­u­al com­po­nents are grow­ing. Since there is enor­mous en­er­gy in the ro­tors of the tur­bines, it is very im­por­tant to en­sure that the ro­tors run smooth­ly. Smooth run­ning is achieved by care­ful bal­anc­ing and also has an in­flu­ence on the ser­vice life and main­te­nance in­ter­vals of the tur­bine. The qui­eter the rotor runs, the lower the me­chan­i­cal load on all com­po­nents.

Rotor Dy­nam­ic Vi­bra­tions

Po­ten­tial dam­age to the rotor

Rotor vi­bra­tions are pri­mar­i­ly caused by im­bal­ances in the ro­tat­ing com­po­nents, which are ei­ther caused by struc­tural or ther­mal ef­fects or are caused by dam­age to the blades.

In ad­di­tion, res­o­nance phe­nom­e­na, the slid­ing bear­ings and the rub­bing ef­fects of the blades on the hous­ing also trig­ger rotor vi­bra­tions.  The re­duced gap di­men­sions due to ef­fi­cien­cy, how­ev­er, leave lit­tle room for changes in the ro­ta­tion­al be­hav­ior of the rotor. Small er­rors can lead to major dam­age.

Ad­di­tion­al ex­ter­nal ex­ci­ta­tions due to fre­quen­cy fluc­tu­a­tions in the power net­work can cause tor­sion­al vi­bra­tions and thus fa­tigue the rotor.

Vi­bra­tion Mea­sure­ment Com­bined with Anal­y­sis and Pro­tec­tion

Our so­lu­tion for rotor dy­nam­ic Phenom­e­na

The in­stal­la­tion of a vi­bra­tion mea­sure­ment sys­tem for com­plete mea­sure­ment, anal­y­sis and, in an emer­gen­cy, pro­tec­tion of the en­tire sys­tem through a pro­tec­tive shut­down. The focus should be on mon­i­tor­ing bear­ing vi­bra­tions by means of ac­cel­er­a­tion sen­sors. Dis­tance mea­sure­ments in the plain bear­ing should be used to mon­i­tor shaft and rotor vi­bra­tions. The speed and rotor po­si­tion are to be mea­sured syn­chronous­ly.

The IfTA Ar­gusOMDS, our all-in-one so­lu­tion in com­bi­na­tion with flex­i­ble input and out­put cards and the anal­y­sis soft­ware IfTA TrendView­er solves ex­act­ly these tasks. The Ar­gusOMDS is used in gas or steam tur­bines for com­mis­sion­ing, bal­anc­ing and con­tin­u­ous mon­i­tor­ing and con­trol. The seam­less long-term stor­age, in­clud­ing the high-res­o­lu­tion raw data from IfTA sys­tems, also en­ables the anal­y­sis of un­fore­seen or spo­radic events. All data streams con­verge 24/7 in the cus­tom­iz­a­ble sys­tem.

Rec­om­mend­ed Prod­ucts

Rotor Dy­nam­ics

Ap­pli­ca­tion so­lu­tion to mea­sure/an­a­lyze rotor-dy­nam­ic vi­bra­tions.


Pro­tec­tion sys­tem with di­ag­nos­tic and mon­i­tor­ing func­tion­al­i­ty.


Di­ag­nos­tic tool for high-speed anal­y­sis & in­tel­li­gent vi­su­al­iza­tion.


Fast & in­­­tu­it­ive on­­line/of­f­­line ana­lys­is soft­­ware for ef­­fi­­cient vi­su­al­iz­a­­tion.