SU94655A1 - Installation for experimental research purge lattices of turbomachine blades - Google Patents

Installation for experimental research purge lattices of turbomachine blades

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Publication number
SU94655A1
SU94655A1 SU445068A SU445068A SU94655A1 SU 94655 A1 SU94655 A1 SU 94655A1 SU 445068 A SU445068 A SU 445068A SU 445068 A SU445068 A SU 445068A SU 94655 A1 SU94655 A1 SU 94655A1
Authority
SU
USSR - Soviet Union
Prior art keywords
installation
lattices
purge
blades
experimental research
Prior art date
Application number
SU445068A
Other languages
Russian (ru)
Inventor
А.М. Завадовский
Н.М. Марков
Original Assignee
А.М. Завадовский
Н.М. Марков
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by А.М. Завадовский, Н.М. Марков filed Critical А.М. Завадовский
Priority to SU445068A priority Critical patent/SU94655A1/en
Application granted granted Critical
Publication of SU94655A1 publication Critical patent/SU94655A1/en

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Description

В насто щее врем  продувка ретиеток лопаток турбомашин в аэродинамической трубе производитс  обычпо без возмущени  потока на входе, что не соответствует действительным услови м в турбомащинах.At present, the blowing of the retiki of the blades of turbomachines in the wind tunnel is carried out normally without disturbing the flow at the inlet, which does not correspond to the actual conditions in the turbo masses.

Предлагаема  установка, в отлнчие от суплествующих условий продувки лопаток, создает возмущение потока на входе и тем самым приближает экспериментальные услови  продувки к действительным на турбомашинах. Это достигаетс  применением рещетки, двнжущепс  на бесконечных цеп х.The proposed installation, in otlnchy of supplanting conditions of the blowing of the blades, creates a disturbance of the flow at the entrance and thereby brings the experimental conditions of blowing to the actual on the turbomachines. This is achieved by applying a lattice dvuchsheps on endless chains.

На чертеже изображена схема установки.The drawing shows the installation diagram.

Установка предназначена дл  исследовани  в неподвижном состо нии решеток .гопаток турбомащин. В ней создаютс  услови  поступаюН1 ,ему на реигетку потоку, близкие к действительным услови м на машине . Дл  этого перед испытуемой рещеткой / лопаток устанавливаетс  движуща с  рещетка 2 из стержней 3, прикрепленна  к двум замкнутым цеп м 4. Последние нат нуты на звездочки 5, из которых одна пара звездочек  вл етс  ведущей , а остальные - ведомыми. Стержни 3 решетки имеют круглое сечение, диаметр которого равен сумме толщины выходных кромок .юпаток предшествующего венца и толщины вытеснени  пограничного сло , а шаг стержне в решетке выбираетс  равным шагу лопаток в предц1ествующ,ем венце.The facility is designed to examine the immobile gratings of the turbo slopes. It creates conditions for H1; it is for him to re-flow, close to the actual conditions on the machine. To do this, a moving grid 2 of rods 3 attached to two closed chains 4 is placed in front of the test crib / blades. The latter are tensioned on sprockets 5, of which one pair of sprockets is leading and the others driven. The lattice rods 3 have a circular cross-section, the diameter of which is equal to the sum of the thickness of the output edges of the previous crown and the displacement thickness of the boundary layer, and the pitch of the rod in the lattice is chosen equal to the blade pitch in the previous crown.

В процессе работы установки движуп.а с  на бесконечных цеп х 4 решетка 2 создает перед испытуемой рещеткой 1 возмущенный (турбулентный) поток, что соответствует действительным услови м в турбомащинах. Скорость перемещени  решеток 2 определ етс  отношением окружной скорости вращени  рабочих лопаток к абсолютной скорости рабочей среды на выходе из направл юндего аппарата, характеризующим режим работы исследуемых лопаток в машине.In the course of operation of the installation, moving on with endless chains x 4, lattice 2 creates a disturbed (turbulent) flow in front of the tested grid 1, which corresponds to the actual conditions in the turbo masks. The speed of movement of the grids 2 is determined by the ratio of the circumferential speed of rotation of the blades to the absolute velocity of the working medium at the exit from the machine direction, which characterizes the mode of operation of the blades under study in the machine.

Предмет изобретени Subject invention

cтaиoвкa дл  экснериментальноисследовательской продувки решеток лопаток турбомашин, выполненна  в виде аэродинамической трубы , В которой установлена решетка испытуемых лопаток, отличающа с  тем, что, с целью создании возмущени  потока на входе, она снабжена движущейс  на бесконечных цеп х решеткой из стержнег круглого сечени , диаметр которыхThe design for the exploratory research of the scraps of turbomachine blades, made in the form of a wind tunnel, in which is installed a grid of test blades, characterized by the fact that, in order to create a disturbance of the flow at the inlet, it is equipped with a grid of circular rods moving on endless chains with a rod made of circular cross section.

равен сумме тольчины выходных кромок лопаток предшествующего венца и толщины вытеснени  погранично -о сло , а шаг стержней в решетке выбираетс  равным niaгу лопаток в пред1иествуюп1ем венде .is equal to the sum of the output edges of the blades of the preceding crown and the thickness of the displacement of the boundary-o layer, and the pitch of the rods in the lattice is chosen equal to the nia of the blades in the preceding Vendian.

18 и.ч ЗсЖгС 18 and.h ZsZhgS

SS

SU445068A 1951-05-31 1951-05-31 Installation for experimental research purge lattices of turbomachine blades SU94655A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU445068A SU94655A1 (en) 1951-05-31 1951-05-31 Installation for experimental research purge lattices of turbomachine blades

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU445068A SU94655A1 (en) 1951-05-31 1951-05-31 Installation for experimental research purge lattices of turbomachine blades

Publications (1)

Publication Number Publication Date
SU94655A1 true SU94655A1 (en) 1951-11-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU445068A SU94655A1 (en) 1951-05-31 1951-05-31 Installation for experimental research purge lattices of turbomachine blades

Country Status (1)

Country Link
SU (1) SU94655A1 (en)

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