CN111734500A

CN111734500A - Sealing ring

Info

Publication number: CN111734500A
Application number: CN202010524544.3A
Authority: CN
Inventors: 杨晓辉; 贺子淼
Original assignee: Shandong Xinjulong Power Technology Group Co ltd
Current assignee: Shandong Xinjulong Power Technology Group Co ltd
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2020-10-02

Abstract

The invention relates to the technical field of aero-engines, in particular to a sealing ring which is installed between a casing and a turbine blade of an aero-engine or a gas turbine and is formed by splicing a plurality of arc-shaped single bodies end to end, wherein a sealing piece is arranged at the joint between every two adjacent arc-shaped single bodies and seals a gap between every two arc-shaped single bodies. According to the invention, the sealing ring is decomposed into a plurality of arc-shaped single bodies, and the arc-shaped single bodies are processed independently, so that the manufacturing difficulty is reduced, the processing precision is improved, during assembly, the installation allowance of the sealing ring formed by splicing the plurality of arc-shaped single bodies is controllable, the installation precision is high, and the sealing effect is good; when the maintenance is carried out, only the damaged arc monomer is required to be replaced, the sealing ring is not required to be integrally cast, the cost of machining and manufacturing the replacement part is low, and the repair cost is reduced.

Description

Sealing ring

Technical Field

The invention relates to the technical field of aero-engines, in particular to a sealing ring.

Background

The sealing ring is used for sealing high-temperature and high-pressure gas at turbine ends of aero-engines and gas turbines, and the existing sealing ring is generally machined and cut into a plurality of sections after being integrally forged and assembled on the engines. This approach has the following disadvantages:

1. the difficulty of integral forging is high, the machining allowance after forging is large, the deformation of the whole ring is large and cannot be well controlled, the sealing effect is even influenced, and the assembly difficulty is high;

2. the replacement difficulty is high, the whole disc needs to be replaced every time, and the replacement cost is high.

Disclosure of Invention

The invention aims to solve the technical problem of providing a sealing ring which is convenient to process, small in deformation and convenient to replace.

In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a ring of obturating, the ring of obturating is installed between aeroengine or gas turbine's quick-witted casket and turbine blade, the ring of obturating is formed by the concatenation of a plurality of arc monomer end to end, and the junction between two adjacent arc monomers is equipped with the piece of obturating, the piece of obturating is with the gap seal between two arc monomers.

As a preferable technical scheme, the inner side edge part of the arc-shaped single body is provided with a retaining wall.

As an optimal technical scheme, the outer side of the arc monomer is provided with two first clamping grooves and two second clamping grooves which extend radially, openings of the first clamping grooves and the second clamping grooves are arranged in a back-to-back mode, and the sealing ring is connected with a rotating shaft of the aero-engine and a turbine of the gas turbine through the first clamping grooves and the second clamping grooves respectively.

As a preferred technical scheme, the first clamping groove and the second clamping groove both comprise an L-shaped side wall integrally arranged on the outer surface of the arc-shaped single body.

As a preferred technical solution, a third groove is formed between the first card slot and the second card slot.

Due to the adoption of the technical scheme, the invention has the beneficial effects that: according to the invention, the sealing ring is decomposed into a plurality of arc-shaped single bodies, and the arc-shaped single bodies are processed independently, so that the manufacturing difficulty is reduced, the processing precision is improved, during assembly, the installation allowance of the sealing ring formed by splicing the plurality of arc-shaped single bodies is controllable, the installation precision is high, and the sealing effect is good; when the maintenance is carried out, only the damaged arc monomer is required to be replaced, the sealing ring is not required to be integrally cast, the cost of machining and manufacturing the replacement part is low, and the repair cost is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of A-A of FIG. 1;

FIG. 3 is an enlarged schematic view at B in FIG. 2;

in the figure: 1-an arc-shaped monomer; 101-a first card slot; 102-a second card slot; 103-a third groove; 11-barrier wall.

Detailed Description

As shown in figures 1 to 3, the sealing ring is installed between a casing and a turbine blade of an aeroengine or a gas turbine and is a key hot end component at the turbine end, the sealing ring is formed by splicing a plurality of arc monomers 1 end to end, a sealing piece is arranged at the joint between every two adjacent arc monomers 1, and the sealing piece seals a gap between every two arc monomers 1.

In fig. 1 and 2, only the splicing schematic diagram of the arc-shaped single body 1 is shown, and the sealing sheet is not installed.

The edge part of the inner side of the arc monomer 1 is provided with a baffle wall 11, and the arrangement of the baffle wall 11 increases the contact area between two adjacent arc monomers, thereby being beneficial to installing a sealing sheet and realizing sealing.

The outer side of the arc monomer 1 is provided with two first clamping grooves 101 and two second clamping grooves 102 which extend along the radial direction of the arc monomer 1, each of the first clamping grooves 101 and the second clamping grooves 102 comprises an L-shaped side wall integrally arranged on the outer surface of the arc monomer 1, the L-shaped side wall and the arc monomer 1 form the first clamping groove 101 or the second clamping groove 102, openings of the first clamping groove 101 and the second clamping groove 102 are arranged in a back-to-back mode and are opposite to aero-engines and gas turbine turbines on two sides, and the sealing ring is connected with a rotating shaft of the aero-engine and the gas turbine turbines through the first clamping groove 101 and the second clamping groove 102 respectively.

A third recess 103 is formed between the first card slot 101 and the second card slot 102.

When the sealing ring is processed, a plurality of arc monomers are processed firstly, the arc monomers are spliced to form a ring, if N arc monomers are required to be spliced to form the ring, the radian of each arc monomer is slightly less than 2 pi/N, and a certain mounting allowance is reserved.

The conventional sealing ring is manufactured by adopting a whole ring, the size of a die is large and the manufacturing precision is low during casting, the difficulty for manufacturing the arc monomers is low, a plurality of arc monomers are cast by manufacturing the die for manufacturing the arc monomers, the number of the manufactured arc monomers can be larger than the number actually required, the extra arc monomers can be used for later maintenance, the cost of one-step processing and manufacturing is low, and the time is saved for later maintenance and replacement.

After the arc-shaped single body is processed, the arc-shaped single body is spliced between a rotating shaft of the aeroengine and a turbine of the gas turbine, so that the assembling difficulty is reduced.

In the invention, the assembly technology of the sealing ring and the structure and material of the sealing sheet belong to the prior art, and are not described in detail in the invention.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A seal ring, seal ring installs between aeroengine or gas turbine's quick-witted casket and turbine blade, its characterized in that: the sealing ring is formed by splicing a plurality of arc monomers end to end, a sealing sheet is arranged at the joint between every two adjacent arc monomers, and the sealing sheet seals the gap between the two arc monomers.

2. A seal ring as claimed in claim 1, wherein: and a blocking wall is arranged at the edge part of the inner side of the arc-shaped single body.

3. The seal ring of claim, wherein: the arc monomer outside is equipped with two edges first draw-in groove and second draw-in groove that the arc monomer radially extended, the opening of first draw-in groove and second draw-in groove sets up mutually, the ring of obturating passes through first draw-in groove and second draw-in groove respectively with aeroengine's pivot and gas turbine connects.

4. A seal ring as claimed in claim 3, wherein: the first clamping groove and the second clamping groove respectively comprise L-shaped side walls integrally arranged on the outer surfaces of the arc-shaped single bodies.

5. The seal ring of claim 4, wherein: and a third groove is formed between the first clamping groove and the second clamping groove.