SU896242A1

SU896242A1 - Mechanism for adjusting the stator blades of axial turbomachine

Info

Publication number: SU896242A1
Application number: SU792828947A
Authority: SU
Inventors: Борис Александрович Рябинин
Original assignee: Производственное объединение "Турбомоторный завод"
Priority date: 1979-10-10
Filing date: 1979-10-10
Publication date: 1982-01-07

Description

Изобретение относится к турбомашиностроению, а именно к механизмам поворота направляющих лопаток осевой турбомашины.The invention relates to turbomachinery, and in particular to mechanisms for turning the guide vanes of an axial turbomachine.

Наиболее близким к предлагаемому по технической сущности и достигаемому ⁵результату является механизм поворота направляющих лопаток осевой турбомаши-, ны, содержащий рычаги, жестко закрепленные на цапфах лопаток и шарнирно соединенные с. поворотным приводным кольцом с помощью штифтов fl).Closest to the proposed technical essence and achieved ⁵ result is the rotation mechanism of the guide vanes of the axial turbomachine, containing levers rigidly mounted on the trunnion pins of the blades and pivotally connected to. swivel drive ring with pins fl).

Однако при использовании известного механизма для разных ступеней турбомашины необходимо изготавливать рычаги ¹⁵разной длины, что приводит к усложнению технологии изготовления всего механизма.However, when using the known mechanism for different stages of the turbomachine, it is necessary to produce levers ^{15 of} different lengths, which complicates the manufacturing technology of the entire mechanism.

Цепь изобретения - упрощение технологии изготовления.The chain of invention is the simplification of manufacturing technology.

Указанная цель достигается тем, что в каждом рычаге выполнен осевой паз с установленным в нем с возможностью пе^.This goal is achieved by the fact that in each lever an axial groove is made with it installed in it with the possibility of ne ^.

ремещения штоком, связанньЬл со штифтом.rod movements connected with a pin.

На чертеже изображен механизм поворота направляющих лопаток, продольный разрез.The drawing shows the rotation mechanism of the guide vanes, a longitudinal section.

Механизм поворота содержит рычаги 1, жестко закрепленные на цапфах 2 лопаток 3 и шарнирно соединенные с поворотным приводным кольцом 4 с помощью штифтов 5. В каждом рычаге 1 выполнен осевой паз 6 с установленным в нем с возможностью перемещения штоком 7, связанным со штифтом 5.The rotation mechanism contains levers 1, rigidly mounted on the pins 2 of the blades 3 and pivotally connected to the rotary drive ring 4 using pins 5. In each lever 1, an axial groove 6 is made with a rod 7 mounted therein with the possibility of movement and connected to the pin 5.

При работе механизма поворота приводное кольцо 4 поворачивается вокруг своей оси, при этом штифт 5 движется по . по дуговой траектории и поворачивает соединенный с ним шток 7, который с помощью рычага 1 поворачивает лопатку 3. Выдвигая или задвигая шток 7 в паз 6 рычага 1, можно в значительных предепах изменять кинематическое плечо рычага 1 от^у^оК^ах.что позволяет использовать механизм для разных ступеней с разны3 ми углами поворота лопаток в пределах од-г ной турбомашины, что приводит к упрощению технологии изготовления.When the rotation mechanism is operating, the drive ring 4 rotates around its axis, while the pin 5 moves along. along the arc trajectory and rotates the rod 7 connected to it, which with the help of lever 1 rotates the blade 3. By pushing or pushing the rod 7 into the groove 6 of lever 1, it is possible to significantly change the kinematic shoulder of lever 1 from ^ y ^ oK ^ ax. use the mechanism for different stages with different angles of rotation of the blades within one turbomachine, which leads to a simplification of manufacturing technology.

Claims

(54) TURNING MECHANISM OF GUIDES OF AXIAL TURBO-DRIVES The invention relates to a turbomachine structure, namely, to the mechanisms of rotation of the guide vanes of an axial turbomachine. The closest to the proposed technical essence and the achieved result is the mechanism of rotation of the guide vanes of the axial turbomachine, which contains levers rigidly mounted on the axles of the blades and hinged with. pivoting the drive ring with pins 1, However, when using a known mechanism for different stages of the turbomachine, it is necessary to manufacture levers of different lengths, which complicates the technology of manufacturing the entire mechanism. The purpose of the invention is to simplify the manufacturing technology. This goal is achieved by the fact that in each lever an axial slot is made with a rod installed in it that can be moved, connected with a piece (volume. The drawing shows a mechanism for turning guide vanes, a longitudinal section. The mechanism of rotation contains levers 1 rigidly fixed on the pins 2 of the blades 3 and pivotally connected to the rotary driving ring 4 by means of pins 5. Each lever 1 has an axial groove 6 with a rod 7 connected to the pin 5 that is connected with the possibility of movement of the turning mechanism The new ring 4 rotates around its axis, while the pin 5 moves along an arc path and rotates the rod 7 connected to it, which with the help of lever 1 rotates the blade 3. The rod 7 can be pulled out or moved into the groove 6 of the lever 1, change the kinematic lever arm 1 oTR | j | EioRj gx, 4To allows the use of the mechanism for different stages with different angles of rotation of the blades within one turbomachine, which leads to a simplified manufacturing technology. Claims The mechanism for turning the guides along the molasses of an axial turbomachine, which contains levers rigidly mounted on the axles of the podatok and hinged to the pivotal driving ring with pin pins, characterized in that, in order to simplify the production technology, each lever is equipped with an axle fitted with a movable rod associated with the pin. Sources of information taken into account in the examination 1. Swiss patent number 374143, cl. 27 C 13, published. 1964.