Turbine rotor blade shot blasting protection device

Abstract

The utility model relates to the technical field of aero-engine turbine rotor blade manufacturing, in particular to a turbine rotor blade shot blasting protection device which comprises a cover body and an installation assembly, a cavity used for embedding a blade body of a blade is formed in the cover body, the installation assembly is connected with the cover body, and the installation assembly is used for connecting the protection device with shot blasting equipment. The cover body comprises a front cover plate and a rear cover plate, a left cover plate and a right cover plate are arranged on the left side and the right side between the front cover plate and the rear cover plate, and a cavity of the cover body is defined by the front cover plate, the rear cover plate, the left cover plate and the right cover plate. And the non-shot blasting area of the turbine blade can be simply, conveniently and efficiently protected in the shot blasting machining process.

Description

Technical Field

[0001] This utility model relates to the field of aero-engine turbine rotor blade manufacturing technology, specifically to a turbine rotor blade shot peening protection device. Background Technology

[0002] The turbine rotor blades of an aero-engine are crucial components that convert the energy of high-temperature combustion gases into rotor mechanical work. The turbine rotor blades are connected to the turbine disk by tenons, which bear significant loads; the centrifugal force at the root of a single blade can reach 100–150 kN. Furthermore, the tenons operate at high temperatures, reaching 600–700°C. Therefore, shot peening is necessary to strengthen the tenons. High-temperature alloy shot is injected at high speed onto the tenon surface using compressed air. The impact force of the high-temperature alloy shot creates residual stress on the tenon surface, thereby improving the fatigue strength and wear resistance of the tenon.

[0003] Since turbine blades are typically designed with heat-insulating coatings and film pores, shot peening can damage the coating structure or block the film pores. Therefore, it is necessary to protect the non-shot-peened areas of the blades, except for the tenons.

[0004] This utility model relates to the field of aero-engine turbine rotor blade manufacturing, and in particular to a turbine rotor blade shot peening protection and clamping device. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a turbine rotor blade shot peening protection device, which can easily and efficiently protect the non-shot peening area of ​​the turbine blade during the shot peening process.

[0006] This utility model is achieved through the following technical solution:

[0007] A shot peening protection device for turbine rotor blades includes a cover and an mounting assembly. The cover has a cavity for embedding the blade body. The mounting assembly is connected to the cover and is used to connect the protection device to a shot peening device. The cover includes a front cover plate and a rear cover plate. A left cover plate and a right cover plate are provided on the left and right sides between the front cover plate and the rear cover plate. The front cover plate, the rear cover plate, the left cover plate, and the right cover plate enclose the cavity of the cover.

[0008] More preferably, the front cover is detachably connected to the left and right cover plates, and the rear cover is detachably connected to the left and right cover plates.

[0009] In a further preferred embodiment, bushings are respectively provided between the front cover plate, the left cover plate and the rear cover plate, and between the front cover plate, the right cover plate and the rear cover plate, and wing screws are provided in the bushings, with the wing screws passing through the bushings on the front cover plate.

[0010] A further preferred embodiment has a slotted tapered set screw on one side of the rear cover plate corresponding to the bushing, for fastening the bushing.

[0011] In a further preferred embodiment, the left cover plate and the right cover plate are respectively bolted to the rear cover plate.

[0012] More preferably, the mounting components include upright legs and flat legs, with the upright legs bolted to the rear cover plate and the flat legs bolted to the upright legs.

[0013] A further preferred embodiment has a U-shaped groove on the flat support leg for adjusting the position of the protective device on the chassis of the shot peening equipment.

[0014] In a further preferred embodiment, the end of the cover away from the flat support foot has a through hole for embedding the blade, and the through hole has a groove.

[0015] The beneficial effects of this utility model are:

[0016] This invention utilizes a detachable cover formed by a front cover plate, a rear cover plate, a left cover plate, and a right cover plate. The blade body is embedded in the cavity of the cover, with only the tenon portion to be shot-peened exposed outside the cover. Flat supports are then bolted to the base of the shot-peening equipment for shot peening. This provides protection for non-shot-peened areas such as the blade body, and is simple, convenient, and provides excellent protection.

[0017] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of a shot peening protection device for turbine rotor blades according to the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of a turbine rotor blade shot peening protection device of this utility model when the front cover is opened and the blade is inserted.

[0021] 1-Front cover plate, 2-Left cover plate, 3-Rear cover plate, 4-Right cover plate, 5-Upright support foot, 6-Flat support foot, 7-Bushing, 8-Wing screw, 9-Slotted cone-end set screw, 10-U-groove, 11-Groove, 12-Cavity, 13-Blade body, 14-Tongue. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] like Figure 1 and Figure 2 As shown, a shot peening protection device for turbine rotor blades includes a cover body with a cavity 12 for embedding the blade body 13 portion of the blade. A tenon 14 portion is outside the cover body. The cover body seals the blade body 13 portion of the blade. During shot peening, only the exposed tenon 14 is shot peened, thereby achieving the function of protecting the blade body 13 during shot peening.

[0024] In this embodiment, the cover includes a front cover plate 1 and a rear cover plate 3. A left cover plate 2 and a right cover plate 4 are provided on the left and right sides between the front cover plate 1 and the rear cover plate 3. The front cover plate 1, the rear cover plate 3, the left cover plate 2 and the right cover plate 4 enclose and form a cavity 12 of the cover for the blade body 13 to be embedded. One end of the cover can be open, that is, the cavity 12 communicates with the outside, and the other end has a through hole for embedding the blade.

[0025] In this embodiment, the left cover plate 2 and the right cover plate 4 are respectively connected to the rear cover plate 3 by bolts. A bushing 7 is provided in the area between the front cover plate 1 and the rear cover plate 3 corresponding to the left cover plate 2 and the right cover plate 4. A wing screw 8 is provided in the bushing 7. Preferably, two wing screws 8 and two bushings 7 are provided at the corresponding left cover plate 2 and two at the corresponding right cover plate 4. The wing screw 8 is inserted from the front cover plate 1, and the bushing 7 is installed upward from the rear cover plate 3. That is, after the wing screw 8 is inserted from the front cover plate 1 into the bushing 7, the front cover plate 1 and the rear cover plate 3 are detachably connected, and the left cover plate 2 and the right cover plate 4 are further fixed. A slotted conical set screw 9 is also provided on one side of the rear cover plate 3 at the position corresponding to the bushing 7. After the front cover plate 1 is connected to the rear cover plate 3 through the bushing 7 and the wing screw 8, the bushing 7 is locked by the slotted conical set screw 9 to fix the bushing 7.

[0026] In this embodiment, the protective device also includes a mounting assembly, which includes a vertical support 5 and a horizontal support 6. The vertical support 5 is connected to the rear cover plate 3 by bolts, and the horizontal support 6 is connected to the vertical support 5 by bolts. The horizontal support 6 is used to connect the entire protective device to the chassis of the shot peening equipment. Preferably, a U-shaped groove 10 is provided on the horizontal support 6, which allows for flexible adjustment of the fixed position of the protective device on the chassis according to the size of the shot peening equipment chassis. This enables rapid fixing and clamping of the blades. Multiple protective devices can also be installed simultaneously on the chassis of the shot peening equipment, allowing for the processing of multiple parts in a single shot peening operation, thereby improving production efficiency.

[0027] Preferably, a groove 11 is provided on the through hole between the left cover plate 2 and the right cover plate 4 at the same end. The shape of the groove 11 is adapted to the shape of the turbine working blade edge plate. The tenon 14 for the turbine blade is placed into the groove 11 of the cover plate, so that the blade and the cover are tightly joined, which facilitates shot peening.

[0028] Preferably, the front cover plate 1, rear cover plate 3, left cover plate 2, and right cover plate 4 are all made of nylon material. The front cover plate 1, rear cover plate 3, left cover plate 2, and right cover plate 4 have the same length, ranging from 100mm to 250mm. The front cover plate 1 and rear cover plate 3 have the same width, ranging from 100mm to 200mm. The thickness of the front cover plate 1, rear cover plate 3, left cover plate 2, and right cover plate 4 is 20mm to 80mm. The specific dimensions can be adjusted according to the outer contour of the blade.

[0029] Preferably, the length of the upright support 5 and the flat support 6 is 150mm to 300mm, the width is 50mm to 100mm, and the thickness is 10mm. They are made of galvanized 45# steel. Their dimensions can be adjusted according to the size of the shot peening equipment chassis to ensure that there is no interference when the device is clamped on the shot peening equipment chassis.

[0030] The working principle of this utility model is as follows:

[0031] Unscrew the wing screw 8, open the front cover plate 1, and insert the turbine working blade tenon 14 upwards into the groove 11 between the left cover plate 2 and the right cover plate 4. Install the blade, with the blade body 13 embedded in the cavity 12 of the cover. Replace the front cover plate 1 and tighten the wing screw 8 to fix the turbine blade within the cavity 12 of the cover. Only the tenon 14 portion to be shot-peened should be exposed outside the cover. Secure the flat support leg 6 to the shot-peening equipment chassis with bolts for shot peening. This method can protect non-shot-peened areas such as the blade body 13. It is simple, convenient, and provides good protection.

[0032] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. A shot peening protection device for turbine rotor blades, characterized in that: The device includes a cover and an installation assembly. The cover has a cavity (12) for embedding the blade (13) of the blade. The installation assembly is connected to the cover and is used to connect the protective device to the shot peening equipment. The cover includes a front cover plate (1) and a rear cover plate (3). A left cover plate (2) and a right cover plate (4) are provided on the left and right sides between the front cover plate (1) and the rear cover plate (3). The front cover plate (1), the rear cover plate (3), the left cover plate (2) and the right cover plate (4) enclose the cavity (12) of the cover.

2. The turbine rotor blade shot peening protection device according to claim 1, characterized in that: The front cover plate (1) is detachably connected to the left cover plate (2) and the right cover plate (4), and the rear cover plate (3) is detachably connected to the left cover plate (2) and the right cover plate (4).

3. The turbine rotor blade shot peening protection device according to claim 2, characterized in that: Bushings (7) are provided between the front cover plate (1), the left cover plate (2) and the rear cover plate (3), and between the front cover plate (1), the right cover plate (4) and the rear cover plate (3). A wing screw (8) is provided in the bushing (7), and the wing screw (8) passes through the bushing (7) on the front cover plate (1).

4. The turbine rotor blade shot peening protection device according to claim 3, characterized in that: A slotted tapered set screw (9) is provided on one side of the rear cover plate (3) corresponding to the bushing (7) for fastening the bushing (7).

5. A shot peening protection device for turbine rotor blades according to claim 2, characterized in that: The left cover plate (2) and the right cover plate (4) are respectively bolted to the rear cover plate (3).

6. The turbine rotor blade shot peening protection device according to claim 1, characterized in that: The mounting components include a vertical support (5) and a horizontal support (6), wherein the vertical support (5) is bolted to the rear cover plate (3) and the horizontal support (6) is bolted to the vertical support (5).

7. A shot peening protection device for turbine rotor blades according to claim 6, characterized in that: The flat support (6) is provided with a U-shaped groove (10) for adjusting the position of the protective device on the shot peening equipment.

8. The turbine rotor blade shot peening protection device according to claim 1, characterized in that: One end of the cover has a through hole for inserting the blade, and the through hole has a groove (11).

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