RU96123468A - DEVICE FOR MEASURING AMPLITUDES OF VIBRATIONS OF BANDED SHOVELS OF TURBINE BY DISCRETE-PHASE METHOD - Google Patents

DEVICE FOR MEASURING AMPLITUDES OF VIBRATIONS OF BANDED SHOVELS OF TURBINE BY DISCRETE-PHASE METHOD

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Publication number
RU96123468A
RU96123468A RU96123468/28A RU96123468A RU96123468A RU 96123468 A RU96123468 A RU 96123468A RU 96123468/28 A RU96123468/28 A RU 96123468/28A RU 96123468 A RU96123468 A RU 96123468A RU 96123468 A RU96123468 A RU 96123468A
Authority
RU
Russia
Prior art keywords
blades
shelves
sensor
core
sensors
Prior art date
Application number
RU96123468/28A
Other languages
Russian (ru)
Other versions
RU2143103C1 (en
Inventor
К.Н. Боришанский
Б.Е. Григорьев
С.Ю. Григорьев
Н.Н. Гудков
А.Ю. Кондаков
А.В. Наумов
А.В. Груздев
Original Assignee
Акционерное общество открытого типа "Ленинградский Металлический завод"
Filing date
Publication date
Application filed by Акционерное общество открытого типа "Ленинградский Металлический завод" filed Critical Акционерное общество открытого типа "Ленинградский Металлический завод"
Priority to RU96123468/28A priority Critical patent/RU2143103C1/en
Priority claimed from RU96123468/28A external-priority patent/RU2143103C1/en
Publication of RU96123468A publication Critical patent/RU96123468A/en
Application granted granted Critical
Publication of RU2143103C1 publication Critical patent/RU2143103C1/en

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Claims (3)

1. Устройство для замера амплитуд колебаний бандажированных лопаток дискретно-фазовым методом, содержащее связанные с регистрирующей аппаратурой три неподвижных индукционных датчика, один из которых - периферийный датчик, другой - оборотный датчик, а также магниты, расположенные в пределах бандажных полок, причем сердечник установленного над бандажными полками лопаток периферийного датчика имеет форму вытянутого прямоугольника с отношением сторон 10 ≥ b/a ≥ 3, где a и b - соответственно ширина и длина поперечного сечения сердечника, а угол между минимальной осью инерции сердечника периферийного датчика и осью турбомашины заключен в диапазоне 30o ≤ α ≤ 60o, отличающееся тем, что третий индукционный датчик размещен над бандажными полками, выполнен по конструкции аналогично указанному периферийному датчику, причем минимальная ось инерции сердечника третьего датчика расположена под углом α к оси турбины, а окружное расстояние между последними меньше шага рабочих лопаток.1. A device for measuring the oscillation amplitudes of bandaged blades by a discrete-phase method, containing three stationary induction sensors connected to the recording equipment, one of which is a peripheral sensor, the other is a rotary sensor, as well as magnets located within the retaining shelves, with the core installed above the banding shelves of the blades of the peripheral sensor has the shape of an elongated rectangle with an aspect ratio of 10 ≥ b / a ≥ 3, where a and b are respectively the width and length of the cross section of the core, and the angle between the minimum axis of inertia of the core of the peripheral sensor and the axis of the turbomachine is in the range of 30 o ≤ α ≤ 60 o , characterized in that the third induction sensor is located above the retaining shelves, is designed in a similar manner to the specified peripheral sensor, and the minimum axis of inertia of the core of the third sensor is located under angle α to the axis of the turbine, and the circumferential distance between the latter is less than the pitch of the blades. 2. Устройство по п. 1, отличающееся тем, что над бандажными полками лопаток установлены дополнительные две пары датчиков, аналогичных по конструкции первой паре датчиков над бандажными полками, причем окружное расстояние между соседними парами датчиков составляет I/3K длины окружности, где K - число колебаний лопатки за оборот. 2. The device according to claim 1, characterized in that there are two additional pairs of sensors above the shroud shelves of blades, similar in design to the first pair of gauges above the shroud shelves, and the circumferential distance between adjacent pairs of gauges is I / 3K circumference, where K is the number scapular vibrations per revolution. 3. Устройство по пп. 1 и 2, отличающееся тем, что над бандажными полками лопаток установлены дополнительно две пары датчиков, аналогичных по конструкции с остальными, на расстоянии I/K и 2/K длины окружности от первой пары датчиков при K ≥ 3. 3. The device according to paragraphs. 1 and 2, characterized in that over the retaining shelves of the blades there are additionally two pairs of sensors, similar in design to the others, at a distance of I / K and 2 / K of the circumference from the first pair of sensors at K ≥ 3.
RU96123468/28A 1996-12-15 1996-12-15 Gear measuring vibration amplitudes of shrouded blades of turbine by discrete-phase method RU2143103C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU96123468/28A RU2143103C1 (en) 1996-12-15 1996-12-15 Gear measuring vibration amplitudes of shrouded blades of turbine by discrete-phase method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU96123468/28A RU2143103C1 (en) 1996-12-15 1996-12-15 Gear measuring vibration amplitudes of shrouded blades of turbine by discrete-phase method

Publications (2)

Publication Number Publication Date
RU96123468A true RU96123468A (en) 1999-02-10
RU2143103C1 RU2143103C1 (en) 1999-12-20

Family

ID=20188053

Family Applications (1)

Application Number Title Priority Date Filing Date
RU96123468/28A RU2143103C1 (en) 1996-12-15 1996-12-15 Gear measuring vibration amplitudes of shrouded blades of turbine by discrete-phase method

Country Status (1)

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RU (1) RU2143103C1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006060650A1 (en) * 2006-12-21 2008-06-26 Mtu Aero Engines Gmbh Device and method for contactless blade vibration measurement
RU2538427C1 (en) * 2013-07-31 2015-01-10 Федеральное государственное унитарное предприятие "Центральный институт авциаионного моторостроения им. П.И. Баранова" Method to determine characteristic of oscillating motion of turbomachine element
FR3015671B1 (en) * 2013-12-23 2020-03-20 Safran Helicopter Engines ASSEMBLY FOR A TURBOMACHINE FOR MEASURING VIBRATIONS SUBJECT TO A ROTATING BLADE
RU2591477C1 (en) * 2015-05-20 2016-07-20 Открытое акционерное общество "Научно-производственное объединение по исследованию и проектированию энергетического оборудования им. И.И. Ползунова" (ОАО "НПО ЦКТИ") Method of controlling integrity of steam turbine blading platforms

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