RU1367601C - Housing of gas-turbine engine - Google Patents

Housing of gas-turbine engine Download PDF

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Publication number
RU1367601C
RU1367601C SU3859721A RU1367601C RU 1367601 C RU1367601 C RU 1367601C SU 3859721 A SU3859721 A SU 3859721A RU 1367601 C RU1367601 C RU 1367601C
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RU
Russia
Prior art keywords
layers
stresses
turbine engine
layer
gas
Prior art date
Application number
Other languages
Russian (ru)
Inventor
С.В. Николаевский
Ю.В. Тельнов
Ю.В. Вигант
Original Assignee
Запорожское машиностроительное конструкторское бюро "Прогресс"
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Application filed by Запорожское машиностроительное конструкторское бюро "Прогресс" filed Critical Запорожское машиностроительное конструкторское бюро "Прогресс"
Priority to SU3859721 priority Critical patent/RU1367601C/en
Application granted granted Critical
Publication of RU1367601C publication Critical patent/RU1367601C/en

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Abstract

FIELD: gas-turbine engine engineering. SUBSTANCE: layers 4 are provided with longitudinal corrugations 5 positioned equidistantly with respect to each other. Layers 4 made of a fibre material are interconnected through layers 6 made of a binding material. When breaking down of, e.g. working blade occurs, its piece punches ring shell 1 and breaks down layers 4 and 6. Stresses caused by the shock are distributed among several directions in each of the layer The grates stresses are directed along the fibres of layer 4. The greatest portion of the shock energy is damped due to longitudinal flexibility of fibres of layers 4. There is no shear between the layers. As the piece moves inside layers 4 and 6 stresses are spread, the stresses being decreased in each subsequent layer 4 up to the full damping of the shock energy. EFFECT: enhanced reliability. 1 dwg

Description

Изобретение относится к газотурбостроению, в частности к корпусам газотурбинных двигателей. The invention relates to gas turbine construction, in particular to the bodies of gas turbine engines.

Целью изобретения является повышение надежности путем увеличения сопротивления продольному сдвигу слоев. The aim of the invention is to increase reliability by increasing the resistance to longitudinal shear of the layers.

На чертеже схематически изображен корпус газотурбинного двигателя, продольное сечение. The drawing schematically shows the casing of a gas turbine engine, a longitudinal section.

Корпус газотурбинного двигателя содержит кольцевую обечайку 1 с чередующимися цилиндрическими 2 и коническими 3 участками и расположенные на наружной поверхности обечайки 1 параллельно ее оси слои 4 волокнистого материала, связанные между собой. При этом слои 4 выполнены с продольными гофрами 5, расположенными эквидистантно относительно друг друга. Слои 4 связаны между собой слоями 6 связующего материала. The gas turbine engine housing contains an annular shell 1 with alternating cylindrical 2 and conical 3 sections and layers 4 of fibrous material connected to each other located on the outer surface of the shell 1 parallel to its axis. Moreover, the layers 4 are made with longitudinal corrugations 5 located equidistantly relative to each other. Layers 4 are interconnected by layers 6 of a binder material.

Во время работы при разрушении, например, рабочей лопатки (на чертеже не показана) ее осколок локально пробивает кольцевую обечайку 1, при этом в начале удара поглощается часть кинетической энергии осколка. При встрече со слоями 4 волокнистого материала и слоями 6 связующего материала осколок локально разрушает их. Усилия напряжений от удара в каждом из слоев 4 и 6 раскладываются на составляющие, одни из которых направлены поперек волокон в слоях 4, а другие вдоль них. За счет выполнения слоев 4 с продольными гофрами 5, наибольшие по величине усилия напряжений будут направлены вдоль волокон слоев 4. Вследствие этого большая часть энергии удара будет поглощаться за счет сопротивления упругих свойств вдоль волокна слоев 4, а межслойного сдвига происходить не будет. По мере продвижения осколка в слоях 4 и 6 будет происходить последовательное рассредоточение усилий напряжений в каждом последующем слое 4 с уменьшением их значений до полного поглощения энергии удара, при котором осколок будет зафиксирован в слоях 4 корпуса двигателя. During operation, when, for example, a working blade is destroyed (not shown in the drawing), its fragment locally breaks through the annular shell 1, and at the beginning of the impact, part of the kinetic energy of the fragment is absorbed. When meeting with layers 4 of fibrous material and layers 6 of binder material, a fragment locally destroys them. The stress forces from impact in each of the layers 4 and 6 are decomposed into components, some of which are directed across the fibers in layers 4, and others along them. Due to the implementation of layers 4 with longitudinal corrugations 5, the largest stress forces will be directed along the fibers of layers 4. As a result, most of the impact energy will be absorbed due to the resistance of elastic properties along the fibers of layers 4, and interlayer shear will not occur. As the fragment moves in layers 4 and 6, successive dispersal of stress forces in each subsequent layer 4 will occur with a decrease in their values until the shock energy is completely absorbed, at which the fragment will be fixed in layers 4 of the engine casing.

Claims (1)

КОРПУС ГАЗОТУРБИННОГО ДВИГАТЕЛЯ, содержащий кольцевую обечайку с чередующимися цилиндрическими и коническими участками и расположенные на наружной поверхности обечайки параллельно ее оси слои волокнистого материала, связанные между собой, отличающийся тем, что, с целью повышения надежности путем увеличения сопротивления продольному сдвигу слоев, последние выполнены с продольными гофрами, расположенными эквидистантно относительно друг друга. GAS-TURBINE ENGINE HOUSING, containing an annular shell with alternating cylindrical and conical sections and layers of fibrous material connected to each other located on the outer surface of the shell parallel to its axis, characterized in that, in order to increase reliability by increasing the resistance to longitudinal shear of the layers, the latter are made with longitudinal corrugations located equidistant relative to each other.
SU3859721 1985-02-25 1985-02-25 Housing of gas-turbine engine RU1367601C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU3859721 RU1367601C (en) 1985-02-25 1985-02-25 Housing of gas-turbine engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU3859721 RU1367601C (en) 1985-02-25 1985-02-25 Housing of gas-turbine engine

Publications (1)

Publication Number Publication Date
RU1367601C true RU1367601C (en) 1995-07-20

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ID=30440221

Family Applications (1)

Application Number Title Priority Date Filing Date
SU3859721 RU1367601C (en) 1985-02-25 1985-02-25 Housing of gas-turbine engine

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RU (1) RU1367601C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2669123C2 (en) * 2013-10-08 2018-10-08 Нуово Пиньоне СРЛ Casing for rotating machine and rotating machine including such casing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Патент США 4377370, кл. 415-9, 1983. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2669123C2 (en) * 2013-10-08 2018-10-08 Нуово Пиньоне СРЛ Casing for rotating machine and rotating machine including such casing
US10563540B2 (en) 2013-10-08 2020-02-18 Nuovo Pignone Srl Casing for a rotating machine and rotating machine including such casing

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MM4A The patent is invalid due to non-payment of fees

Effective date: 20030226