Device and method for securing cover bands to stator blades

A technology for installing a stator and a fixed cover, which is applied to the supporting elements of the blades, stators, engine elements, etc., can solve the problems of high labor consumption, small tolerances of holes and rivets, and different heights of rivet heads, and achieves high accuracy and avoidance. deformation effect

Inactive Publication Date: 2013-02-13
弗拉斯季米尔·塞德拉切克
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hole and rivet tolerances were so tight that some rivets had to be pressed into the holes with such force that both the set rivet and the actual set vane were damaged
When all the covers are fastened to the ends of the fixed blades by means of raised rivets, the required artificial factors and external forces have the following consequences: uncontrollable artificial character in terms of their high labor consumption, strong shocks that negatively affect human organs and Mainly due to the inability to apply the proper force on the rivet, causing the overload of rivets that need to be driven down to the same height and the height of the rivet head is different

Method used

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  • Device and method for securing cover bands to stator blades

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0009] The method of installing the stator blade fixing cover is to insert the blade 5 into the blade wheel 4 freely without any fixation. The actual blade wheel 4 is located on the side of the rotating part 6 and fixed by the side of the top 7, and at the same time, its bottom is supported on a solid surface 2. While the blade 5 is inserted into the blade wheel 4, the rivet 8 of the blade 5 is inserted into the cover 3 so that the blade is supported on the solid surface 2. By using the rivet head 1 to move the rivet 8, the blade is fixed in the cover 3. When the task is completed, the entire blade wheel 4 is rotated by the rotating part 6 to install the next rivet 8. Apply this method until all the blades 5 are fixed in the cover 3.

example 2

[0011] The device for implementing the method of installing the stator blade fixing cover includes a non-indicating frame with a rotating part 6 and a top 7 mounted on the cover, which is used to fix the blade wheel 4 so that its bottom is always perpendicular to the insert blade 5 on the solid surface 2 . The riveting joint 1 is located in the inner annular cover area 3.

example 3

[0013] The blade wheel 4 is placed on the rotating part 6 and the solid surface 2. Make sure it moves sideways through the top 7. The blade 5 is inserted into the blade wheel so that the rivet 8 faces the center of the wheel. The prepared blade 5 rivet 8 is put into the hole of the cover 3 prepared in advance in this way. The riveting joint 1 is located in the inner area of ​​the blade wheel 4 and actually in the inner area of ​​the cover 3, moving the rivet 8 causes deformation to fix the cover to the blade 5. In this application, the blade 5 and the blade wheel 4 are located on the solid surface 2 together, and the blade wheel 4 sits directly on the solid surface. In this way, the least dissipated energy transmission is used. In addition, the entire blade wheel is rotated by the rotating part 6, in this way the next blade is installed. Apply this way until all blades are fixed. When this process is completed, the blade wheel 4 is removed, and many blades 5 are installed ...

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PUM

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Abstract

A method for securing stator blade fixing covers is performed by the stator blades being fixed in such a way that the blades (5) are inserted into the blade wheel (4) freely without securing, while the blade wheel (4) is placed on the rotating segments (6) and side- secured by the top segments (7) where the blade (5) rivets (8) are inserted into the cover (3) with the blade (5) inserted in the blade wheel (4) standing on the solid surface (2) and being secured in the cover (3) by removing the rivets (8) using the riveting head (1) while the rotating segments (6) perform the entire blade wheel (4) rotation to secure the next rivet (8) and such procedure is applied until all the blades (5) are fixed in the cover (3). A device for implementing the method for securing the stator blade fixing covers is composed of the non - indicated frame with the rotating segments (6) and top segments (7) being placed on it for fixing the blade wheel (4) that always stands with the bottom perpendicularly inserted blade (5) on a solid surface (2) while the riveting head (1) is located in the internal circular cover (3) area.

Description

Technical field [0001] The invention relates to a method for installing a stator blade fixing cover and a device for implementing the method. Background technique [0002] The fixed wheel blades and the cover are fixed along its inner diameter. During the machining process, the cover is not attached to the blade, and only after the fixed wheel is inserted and installed in the turbine support on which the fixed wheel is firmly fixed, the cover is fixed to the blade. According to the actual situation of the blade installation, the protruding rivets on the fixed blade must be manually extended on a separate small covering member, so as to realize the drilling of the covering member on the specified number of rivets. The holes drilled in this way are used to insert rivets at the ends of the fixed blades. However, the tolerances of the holes and rivets are so small that some rivets have to be forced into the holes with force, and the fixed rivets and the actual fixed blades are dama...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D5/22F01D9/04F01D25/28
CPCF05B2250/35F05D2260/30F05D2250/35F05D2230/50F05B2230/50F01D9/044F01D25/285F05B2260/30F05B2240/916F05D2250/313F01D5/225F05D2230/68F05B2250/313F05B2230/61
Inventor 弗拉斯季米尔·塞德拉切克
Owner 弗拉斯季米尔·塞德拉切克
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