CN204225928U

CN204225928U - Turbine movable vane and wheel disc fixed structure

Info

Publication number: CN204225928U
Application number: CN201420728219.9U
Authority: CN
Inventors: 舒春英; 郁顺旺; 梁晨; 彭涛; 牛夕莹; 王慧杰; 卫嘉
Original assignee: HARBIN GUANGHAN GAS TURBINE Co Ltd
Current assignee: HARBIN GUANGHAN GAS TURBINE Co Ltd
Priority date: 2014-11-28
Filing date: 2014-11-28
Publication date: 2015-03-25
Anticipated expiration: 2024-11-28

Abstract

The utility model proposes turbine movable vane and wheel disc fixed structure.Turbine rotor blade adopts tenon to be connected with wheel disc, turbine rotor blade structure adopts a point half tenon root form, it with to use the another blade of symmetrical half tenon root to merge to be arranged on wheel disc in same tongue-and-groove, turbine wheel tray bottom is fluted, bolt is had to pass in groove, the part that bolt two ends are stretched out is bent downwardly and is attached to wheel disc side, another part is bent upwards after extending to the groove of long jam plate and is attached on long jam plate, groove on the downside of long jam plate withstands on bolt, and anchor ring is above stuck in the outstanding shoulder of turbine rotor blade.The utility model passes through said structure, realize the axial limiting of turbine rotor blade with this, bolt contacts with turbine rotor blade tenon root, and the effect of damping vibration attenuation is played in the friction of generation, said structure is replaceable and structure simple, be convenient to dismounting, can be applicable to the fixing of point half tenon root moving vane.

Description

Turbine movable vane and wheel disc fixed structure

technical field:

The utility model relates to field of energy source power, specifically turbine movable vane and wheel disc fixed structure.

background technique:

The rotor blade of turbo machine is at high temperature, work under high-revolving rugged environment, bear the centrifugal force of blade self when rotor high-speed rotates, aerodynamic force, thermal stress and vibrational loading, blade tenon is connected with the turbine disk, it is the part that in motor, load is larger, the centrifugal force that the root of general turbine rotor blade bears is higher, tenon at high temperature works again, the mechanical property of material will reduce greatly, very easily break down, therefore the design being connected and fixed structure is very important, in addition, the blade structure applying this structure turbine rotor is special---adopt a point half tenon root form, half tenon root architecture is divided to be that a blade only has half tenon root, it with to use the another blade of symmetrical half tenon root to merge to be arranged on wheel disc in same tongue-and-groove, owing to being a point half tenon root architecture, therefore assembly problem is more complicated than overall tenon root architecture, adopt this novel movable vane more can be suitable for this special point half tenon root form blade structure with wheel disc fixed structure than other fixed structure.

model utility content:

For the problems referred to above, the utility model especially by the moving vane of effectively locking point half tenon root, effectively stops blade to move axially on turbine rotor, and root produces frictional damping minimizing blade vibration and avoids blade fault, ensures the Security of unit.

The technical solution of the utility model is: turbine movable vane and wheel disc fixed structure, comprise wheel disc and turbine rotor blade, turbine rotor blade adopts fir or swallow-tail form tenon to be connected with wheel disc, turbine rotor blade structure adopts a point half tenon root form, half tenon root architecture is divided to be that a blade only has half tenon root, it with to use the another blade of symmetrical half tenon root to merge to be arranged on wheel disc in same tongue-and-groove, turbine wheel tray bottom is fluted, bolt is had to pass in groove, the part that bolt two ends are stretched out is bent downwardly and is attached to wheel disc side, another part is bent upwards after extending to the groove of long jam plate and is attached on long jam plate, groove on the downside of long jam plate withstands on bolt, anchor ring is above stuck in the outstanding shoulder of turbine rotor blade.

The utility model has following beneficial effect: the utility model passes through said structure, the axial limiting of turbine rotor blade is realized with this, bolt contacts with turbine rotor blade tenon root, the effect of damping vibration attenuation is played in the friction produced, said structure is replaceable and structure simple, be convenient to dismounting, can be applicable to the fixing of point half tenon root moving vane.

accompanying drawing illustrates:

Fig. 1 is structural representation of the present utility model;

Accompanying drawing 2 is side views of accompanying drawing 1.

The long jam plate of 1-in figure; 2-turbine rotor blade; 3-wheel disc; 4-bolt.

embodiment:

Below in conjunction with accompanying drawing, the utility model is described in further detail:

Shown in Fig. 1 composition graphs 2, turbine movable vane and wheel disc fixed structure, comprise wheel disc 3 and turbine rotor blade 2, turbine rotor blade 2 adopts fir or swallow-tail form tenon to be connected with wheel disc 3, turbine rotor blade 2 structure adopts a point half tenon root form, half tenon root architecture is divided to be that a blade only has half tenon root, it with to use the another blade of symmetrical half tenon root to merge to be arranged on wheel disc in same tongue-and-groove, fluted bottom turbine disk 3, bolt 4 is had to pass in groove, the part that bolt 4 two ends are stretched out is bent downwardly and is attached to wheel disc 3 side, another part is bent upwards after extending to the groove of long jam plate 1 and is attached on long jam plate 1, groove on the downside of long jam plate 1 withstands on bolt 4, anchor ring is above stuck in the outstanding shoulder of turbine rotor blade 2.

Bolt 4 is arranged in the tongue-and-groove of wheel disc 3, the part two ends of stretching out tongue-and-groove are equal, turbine rotor blade 2 tenon root is fixed in wheel disc 3 tongue-and-groove, long jam plate 1 is inserted in turbine rotor blade 2 body root groove, upwards break curved bolt, long jam plate 1 is fixed, the axial limiting of turbine rotor blade 2 is realized with this, bolt 4 contacts with turbine rotor blade 2 tenon root, the effect of damping vibration attenuation is played in the friction produced, said structure is replaceable and structure simple, be convenient to dismounting, can be applicable to the fixing of point half tenon root moving vane.

Claims

1. a turbine movable vane and wheel disc fixed structure, comprise wheel disc (3) and turbine rotor blade (2), it is characterized in that: turbine rotor blade (2) adopts fir or swallow-tail form tenon to be connected with wheel disc (3), turbine rotor blade (2) structure adopts a point half tenon root form, half tenon root architecture is divided to be that a blade only has half tenon root, it with to use the another blade of symmetrical half tenon root to merge to be arranged on wheel disc in same tongue-and-groove, the bottom of turbine disk (3) is fluted, bolt (4) is had to pass in groove, the part that bolt (4) two ends are stretched out is bent downwardly and is attached to wheel disc (3) side, another part is bent upwards after extending to the groove of long jam plate (1) and is attached on long jam plate (1), the groove of long jam plate (1) downside withstands on bolt (4), anchor ring is above stuck in the outstanding shoulder of turbine rotor blade (2).