CN217176718U

CN217176718U - High-strength turbine blade

Info

Publication number: CN217176718U
Application number: CN202121694778.9U
Authority: CN
Inventors: 邱自成; 高杨; 刘鸣
Original assignee: Zhejiang Huaran Power Technology Co ltd
Current assignee: Zhejiang Huaran Power Technology Co ltd
Priority date: 2021-07-24
Filing date: 2021-07-24
Publication date: 2022-08-12
Anticipated expiration: 2031-07-24

Abstract

The utility model discloses a high strength turbine blade relates to engine accessories, aims at solving the comparatively trouble problem of turbine blade's installation, and its technical scheme main points are: including blade and blade root, the both sides of blade root all are formed with a plurality of tenon teeth, and the border of tenon tooth one side is formed with the chamfer, and the chamfer passes through the arc portion with the surperficial junction of tenon tooth and passes through. The utility model discloses because the chamfer has been seted up at the border of tenon tooth to can reduce blade root and the holistic area in tenon tooth one side, thereby make blade root and tenon tooth embedding turbine dish in convenient and fast more, make the equipment turbine lighter, through setting up circular arc portion, can reduce the stress concentration of chamfer and tenon tooth surface connection department, thereby improve the intensity of tenon tooth, make it more durable.

Description

High-strength turbine blade

Technical Field

The utility model relates to an engine accessory, more specifically say, it relates to a high strength turbine blade.

Background

The turbine is a fan in an engine of an automobile or an airplane to improve the performance of the engine by blowing fuel vapor into the engine using exhaust gas. The turbine is a rotary power machine which converts the energy of a flowing working medium into mechanical work. It is one of the main components of aircraft engines, gas turbines and steam turbines

Current turbine blade includes blade body and blade root, and the both sides of blade root all are formed with a plurality of tenons, and when turbine blade and turbine disc equipment formed the turbine, through draw-in groove and blade root and tenon tooth block in need imbedding the draw-in groove on the turbine disc with blade root and tenon tooth to fixed turbine blade.

When the existing turbine blade is installed, the blade root and the tenon tooth are required to be accurately aligned with the clamping groove in the turbine disc, and once the blade root and the tenon tooth are inclined to some extent, the blade root and the tenon tooth cannot be installed in the clamping groove, so that the installation of the turbine blade is troublesome.

Therefore, a new solution is needed to solve this problem.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a high strength turbine blade, blade root and tenon tooth embedding turbine dish in convenient and fast more.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a high strength turbine blade, includes blade body and blade root, the both sides of blade root all are formed with a plurality of tenon teeth, the border of tenon tooth one side is formed with the chamfer, the chamfer passes through the circular arc portion with the surface connection department of tenon tooth, fixedly connected with blade flange between blade body and the blade root, one side fixedly connected with sand grip of blade flange, the draw-in groove that is used for holding the sand grip embedding on the adjacent blade flange is offered to the opposite side of blade flange.

Through adopting the above technical scheme, because the chamfer has been seted up at the border of tenon tooth, thereby can reduce blade root and the holistic area in tenon tooth one side, thereby make blade root and tenon tooth embedding turbine disc convenient and fast more, make the equipment turbine lighter, through setting up circular arc portion, can reduce the stress concentration of chamfer and tenon tooth surface junction, thereby improve the intensity of tenon tooth, it is more durable to make it, through in the sand grip embedding draw-in groove, thereby make two adjacent screw thread blade joint each other, improve joint strength between the two, thereby make turbine blade install more firmly.

The utility model discloses further set up to: the sand grip is in a semi-cylindrical shape, and a guide end in a semi-circular table shape is formed at one end of the sand grip.

Through adopting above-mentioned technical scheme, the terminal surface area of direction end is less for in the sand grip can more conveniently imbed the draw-in groove, and then play the guide effect to sand grip embedding draw-in groove, because the sand grip is the halfcylinder, thereby improve the anti collision ability of sand grip, and then improve the intensity of sand grip, make it more durable.

The utility model discloses further set up to: and an arc surface is formed on the outer side of the tenon tooth.

Through adopting above-mentioned technical scheme, through setting up the arc surface to can reduce the stress concentration in the tenon tooth outside, thereby improve the life of blade.

The utility model discloses further set up to: thermal barrier coatings are arranged outside the blade body and the blade root.

By adopting the technical scheme, the thermal barrier coating plays a thermal insulation role on the blade body and the blade root, the temperature of the blade body and the blade root is reduced, the turbine blade can operate at high temperature, and the thermal efficiency of an engine using the turbine blade can be improved to more than 60%.

The utility model discloses further set up to: the blade body and the blade root are made of nickel-based alloy.

By adopting the technical scheme, the nickel-based alloy has higher strength and certain oxidation and corrosion resistance at the high temperature of 650-1000 ℃, so that a turbine using the turbine blade is more resistant to high temperature, and the service life of the turbine blade is prolonged.

To sum up, the utility model discloses following beneficial effect has: because the chamfer has been seted up at the border of tenon tooth to can reduce the holistic area in blade root and tenon tooth one side, thereby make blade root and tenon tooth embedding turbine dish in convenient and fast more, make the equipment turbine lighter, through setting up circular arc portion, can reduce the stress concentration of chamfer and tenon tooth surface connection department, thereby improve the intensity of tenon tooth, make it more durable.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is an enlarged schematic view of a portion a in fig. 1.

In the figure: 1. a leaf body; 2. a blade root; 3. tenon teeth; 4. chamfering; 5. a circular arc portion; 6. a blade platform; 7. A convex strip; 8. a card slot; 9. a guide end; 10. a circular arc surface.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

The utility model provides a high strength turbine blade, as shown in fig. 1-2, including blade 1 and blade root 2, blade 1 and blade root 2 all adopt nickel base alloy, blade 1 and blade root 2 all are equipped with the thermal barrier coating outward, the both sides of blade root 2 all are formed with a plurality of tenon teeth 3, the border of 3 one sides of tenon tooth is formed with chamfer 4 through the grinding, chamfer 4 passes through circular arc portion 5 with the surface junction of tenon tooth 3, integrated into one piece has blade flange 6 between blade 1 and the blade root 2, one side integrated into one piece of blade flange 6 has sand grip 7, sand grip 7 sets up along the length direction of blade flange 6, the draw-in groove 8 that is used for holding sand grip 7 embedding on the adjacent blade flange 6 is offered to the opposite side of blade flange 6, sand grip 7 is the semicolumn, the one end of sand grip 7 is formed with the direction end 9 that is the semicircle platform form, the outside of tenon tooth 3 is formed with arc surface 10.

The working principle is as follows: when the turbine blades are installed, because the edges of the tenon teeth 3 are provided with the chamfers 4, the whole area of one side of the blade root 2 and the tenon teeth 3 can be reduced, so that the blade root 2 and the tenon teeth 3 can be embedded into a turbine disc more conveniently and quickly, the turbine can be assembled more easily, by arranging the arc part 5, the stress concentration of the surface connection part of the chamfers 4 and the tenon teeth 3 can be reduced, so that the strength of the tenon teeth 3 is improved, the tenon teeth are more durable, in addition, when the adjacent turbine blades are installed, the raised lines 7 on the after-installed turbine blades are embedded into the clamping grooves 8 on the installed turbine blades, because the end surface area of the guide end 9 is smaller, the raised lines 7 can be more conveniently embedded into the clamping grooves 8, further, the guide effect is realized on the embedding of the raised lines 7 into the clamping grooves 8, so that the two adjacent threaded blades are mutually clamped, and the connection strength between the two threaded blades is improved, thereby making the turbine blade more securely mounted.

Because sand grip 7 is the semi-cylinder, thereby improve sand grip 7's anti-collision ability, and then improve sand grip 7's intensity, make it more durable, through setting up arc surface 10, thereby can reduce the stress concentration in the tenon tooth 3 outside, thereby improve the life of blade, the thermal barrier coating plays thermal-insulated effect to blade 1 and blade root 2, reduce the temperature of blade 1 and blade root 2, make turbine blade can move under high temperature, and can improve the thermal efficiency of the engine that uses this turbine blade and reach more than 60%, and because blade 1 and blade root 2 all adopt nickel base alloy, and nickel base alloy has higher intensity and certain anti-oxidant corrosion ability under 650 ~ 1000 ℃ high temperature, thereby can make the turbine that uses this turbine blade more high temperature resistant, the life of turbine blade has been improved.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A high strength turbine blade characterized by: including blade (1) and blade root (2), the both sides of blade root (2) all are formed with a plurality of tenon tooth (3), the border of tenon tooth (3) one side is formed with chamfer (4), chamfer (4) pass through circular arc portion (5) with the surperficial junction of tenon tooth (3) transition, fixedly connected with blade flange (6) between blade (1) and blade root (2), one side fixedly connected with sand grip (7) of blade flange (6), draw-in groove (8) that are used for holding sand grip (7) embedding on adjacent blade flange (6) are seted up to the opposite side of blade flange (6).

2. The high strength turbine blade of claim 1, wherein: the convex strip (7) is in a semi-cylindrical shape, and a guide end (9) in a semi-circular table shape is formed at one end of the convex strip (7).

3. A high strength turbine blade according to claim 1, wherein: and an arc surface (10) is formed on the outer side of the tenon tooth (3).

4. A high strength turbine blade according to claim 1, wherein: thermal barrier coatings are arranged outside the blade body (1) and the blade root (2).

5. A high strength turbine blade according to claim 1, wherein: the blade body (1) and the blade root (2) are made of nickel-based alloy.