Inorganic coating spraying production device for gas turbine blade

Abstract

The utility model discloses a gas turbine blade inorganic coating spraying production device which comprises a plasma spraying machine body, a spraying table and a spraying gun, the spraying table is provided with a pair of positioning blocks used for clamping a blade, and the spraying table is further provided with a profiling track located on the periphery of the positioning blocks. A sliding seat moving along the profiling track is installed on the profiling track, a bracket is installed on the sliding seat through a lifting frame, the axis of the bracket is perpendicular to the track line of the profiling track, and the spray gun is installed on the bracket. The blade is clamped and fixed on the spraying table, the spray gun can be driven by the sliding seat to move along the profiling track, and the profiling track is formed by outwards deviating and expanding the arc line of the edge of the cross section of the blade, so that the spray gun can be always vertical to the surface of the blade in the moving process; and the spraying distances between the spraying gun and different positions of the surface of the blade tend to be consistent, so that the uniformity of the thickness of the coating is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of coating and plating technology, and in particular to a production device for inorganic coating spraying of gas turbine blades. Background Technology

[0002] Thermal barrier coatings on the surface of gas turbine blades are typically applied using plasma spraying equipment. In existing plasma spraying equipment, the regular parts to be processed are usually clamped on a rotatable spraying table, and the distance between the spray gun and the spraying table is fixed. When the regular parts rotate, the spraying distance remains unchanged, ensuring the uniformity of the coating. However, for gas turbine blades with complex curved surfaces, the blades are irregularly shaped. Rotation spraying will cause the spraying distance between the blade and the spray gun to change, which can easily lead to uneven coating thickness.

[0003] To address these issues, we propose an inorganic coating spraying production device for gas turbine blades. Utility Model Content

[0004] The purpose of this invention is to provide a production device for inorganic coating spraying of gas turbine blades to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An inorganic coating production device for gas turbine blades includes a plasma spraying machine body, a spraying table, and a spray gun. A pair of positioning blocks for clamping the blades are installed on the spraying table, and a contour track is also installed on the spraying table around the positioning blocks. The contour track is formed by offsetting and extending outward along the arc of the blade's cross-section edge. A slide is installed on the contour track and moves along the contour track. A support is installed on the slide via a lifting frame. The axis of the support is perpendicular to the contour track line, and the spray gun is installed on the support. The spray gun is connected to the plasma spraying machine body via a rigid pipe and a flexible pipe.

[0007] In a further embodiment, the lower end of the positioning block slides through the lower surface of the spraying station and is connected to a screw block. A double-ended screw is rotatably mounted on the lower surface of the spraying station through two bearing seats, and the two screw blocks are respectively threaded to the two threaded sections of the double-ended screw with opposite thread directions. A motor is also installed at one end of the double-ended screw.

[0008] In a further embodiment, a roller is rotatably mounted inside the slide block, the roller being in contact with the upper surface of the contour track, and a second motor for driving the roller to rotate is mounted outside the slide block. Ball bearings are symmetrically rotatably embedded on the lower edge of the outer shell of the slide block, and the ball bearings are in contact with the lower surface of the convex edge formed on the inner and outer rings of the contour track.

[0009] In a further embodiment, the lifting frame is internally rotatably connected to a lead screw, and a motor is installed on the lifting frame to drive the lead screw to rotate. The lifting frame is also internally installed with a smooth rod parallel to the lead screw, and both the lead screw and the smooth rod pass through the support. The lead screw is threadedly connected to the support, and the smooth rod is slidably connected to the support.

[0010] In a further embodiment, an arc-shaped pressure cap is hinged to the support, and an adjusting bolt passes through the other end of the pressure cap. The adjusting bolt is threadedly connected to the support.

[0011] In a further embodiment, a ring frame is installed above the center of the contour track on the spraying platform, and a rotating ring is rotatably installed inside the ring frame, with a flexible hose passing through the inside of the rotating ring.

[0012] In a further embodiment, a retaining ring is installed on the upper side of the lifting frame, and a rigid tube passes through the interior of the retaining ring.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention features a blade that is clamped and fixed on a spraying table, while the spray gun can move along a contour track driven by a slide. Since the contour track is formed by the outward offset and expansion of the cross-sectional edge arc of the blade, the spray gun can always remain perpendicular to the blade surface during movement. The spraying distance between different positions of the spray gun and the blade surface tends to be consistent, thereby effectively improving the uniformity of the coating thickness. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the right front view structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the right rear view structure of this utility model;

[0017] Figure 3 This is a bottom view of the spraying table structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the installation structure of the contour track and lifting frame of this utility model;

[0019] Figure 5 This is a schematic diagram of the cross-sectional structure at the connection between the contoured track and the slide block of this utility model.

[0020] In the diagram: 1. Plasma spraying machine body; 2. Spraying table; 3. Positioning block; 31. Screw block; 32. Double-ended screw; 33. Motor 1; 4. Contour track; 41. Protruding edge; 5. Slide; 51. Roller; 52. Motor 2; 53. Ball bearing; 6. Lifting frame; 61. Lead screw; 62. Motor 3; 63. Smooth rod; 7. Support; 71. Pressure cap; 72. Adjusting bolt; 8. Spray gun; 9. Rigid pipe; 10. Flexible hose; 11. Ring frame; 12. Rotary ring; 13. Clamping ring. Detailed Implementation

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-2A production apparatus for inorganic coating spraying of gas turbine blades includes a plasma spraying machine body 1, a spraying table 2, and a spray gun 8. The plasma spraying machine body 1 and the spraying table 2 are arranged side-by-side. A pair of positioning blocks 3 for clamping the blades are installed at the center of the spraying table 2. A contouring track 4 is also installed on the spraying table 2 around the positioning blocks 3. The contouring track 4 is formed by extending outwards along the arc of the blade's cross-sectional edge. A slide 5 that moves along the track is installed on the contouring track 4, and a support 7 is installed on the slide 5 via a vertical lifting frame 6. The spray gun 8 is mounted on the support 7, the axis of which is perpendicular to the trajectory line of the contour track 4, so that the spray line of the spray gun 8 is always perpendicular to the blade surface, and the spraying distance is almost the same when spraying different surfaces of the blade, thus improving the uniformity of the coating thickness. The tail end of the spray gun 8 is connected to the rigid tube 9, which extends upward. Specifically, a retaining ring 13 is installed on the side of the lifting frame 6, and the rigid tube 9 passes through the interior of the retaining ring 13. The retaining ring 13 supports the rigid tube 9, and the rigid tube 9 is connected to the plasma spraying machine body 1 through the flexible hose 10.

[0025] For further details, please refer to Figure 3 To facilitate blade positioning, two positioning blocks 3 are provided, each with its lower end sliding through the lower surface of the spraying station 2 and connected to a screw block 31. A double-ended screw 32 is rotatably mounted on the lower surface of the spraying station 2 via two bearing seats, and the two screw blocks 31 are threadedly connected to the two threaded sections of the double-ended screw 32 with opposite thread directions. A motor 33 is also installed at one end of the double-ended screw 32, so that when the double-ended screw 32 rotates, the two positioning blocks 3 move closer or further apart to clamp or release the blade. Specifically, a recessed positioning groove is provided on the upper surface of the spraying station 2, which matches the bottom surface of the blade tenon, allowing the blade tenon to be directly inserted into the positioning groove, thereby achieving limiting and preventing its displacement, and playing an auxiliary positioning role.

[0026] Please see Figure 5 Inside the slide block 5, a roller 51 is rotatably mounted. The roller 51 is in contact with the upper surface of the contour track 4 and can roll along the upper surface of the contour track 4. A motor 52 is mounted outside the slide block 5 to drive the roller 51 to rotate. Ball bearings 53 are symmetrically rotatably embedded on the lower edge of the outer shell of the slide block 5, and the ball bearings 53 are in contact with the lower surface of the protrusion 41 formed on the inner and outer rings of the contour track 4, so that the roller 51 and the ball bearings 53 limit each other at the upper and lower levels, thereby improving the stability of the slide block 5 movement.

[0027] Please see Figure 3-4Considering that the blades have a certain length and the spraying area of ​​the spray gun 8 is limited, a lead screw 61 is rotatably connected inside the lifting frame 6, and a motor 62 is installed on the lifting frame 6 to drive the lead screw 61 to rotate. A smooth rod 63 parallel to the lead screw 61 is also installed inside the lifting frame 6, and both the lead screw 61 and the smooth rod 63 pass through the support 7. The lead screw 61 is threaded to the support 7, and the smooth rod 63 is slidably connected to the support 7. The lead screw 61 can drive the support 7 to move up and down, so as to spray the blades sequentially along their length.

[0028] Please see Figure 4 To facilitate the maintenance of the spray gun 8, an arc-shaped pressure cap 71 is installed on the support 7 to fasten onto the upper surface of the spray gun 8. One end of the pressure cap 71 is hinged to the support 7, and an adjusting bolt 72 runs vertically through the other end. After the pressure cap 71 is on, turning the adjusting bolt 72 can screw it into the support 7, thereby pressing the pressure cap 71 tightly against the outer shell of the spray gun 8.

[0029] Please see Figure 1-2 Considering that the spray gun 8 rotates during use and will pull the hose 10 during the process, a ring frame 11 is installed on the spray table 2 above the center of the contour track 4. A rotating ring 12 is rotatably installed inside the ring frame 11, and the hose 10 passes through the inside of the rotating ring 12, thereby constraining the hose 10 and preventing it from contacting the blades and damaging the coating.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A production apparatus for inorganic coating spraying of gas turbine blades, comprising a plasma spraying machine body (1), a spraying table (2), and a spray gun (8), characterized in that: A pair of positioning blocks (3) for clamping the blades are installed on the spraying table (2), and a contour track (4) is also installed on the spraying table (2) around the positioning blocks (3). The contour track (4) is formed by the outward extension of the cross-sectional edge arc of the blade. A slide (5) that moves along the contour track (4) is installed on the contour track (4), and a support (7) is installed on the slide (5) through a lifting frame (6). The axis of the support (7) is perpendicular to the trajectory line of the contour track (4), and the spray gun (8) is installed on the support (7). The spray gun (8) is connected to the plasma spraying machine body (1) through a rigid pipe (9) and a flexible pipe (10).

2. The inorganic coating spraying production device for gas turbine blades according to claim 1, characterized in that: The lower end of the positioning block (3) slides through the lower surface of the spraying station (2) and is connected to a screw block (31). The lower surface of the spraying station (2) is rotatably mounted with a double-headed screw (32) through two bearing seats. The two screw blocks (31) are respectively threaded to the two threaded sections of the double-headed screw (32) with opposite thread directions. A motor (33) is also installed at one end of the double-headed screw (32).

3. The inorganic coating spraying production device for gas turbine blades according to claim 1, characterized in that: The slide (5) is rotatably mounted with a roller (51) inside. The roller (51) is in contact with the upper surface of the contour track (4). The slide (5) is also mounted with a motor (52) that drives the roller (51) to rotate. The lower edge of the slide (5) is symmetrically inlaid with balls (53), and the balls (53) are in contact with the lower surface of the protrusion (41) formed on the inner and outer rings of the contour track (4).

4. The inorganic coating spraying production device for gas turbine blades according to claim 1, characterized in that: The lifting frame (6) is internally connected to a lead screw (61), and a motor (62) is installed on the lifting frame (6) to drive the lead screw (61) to rotate. The lifting frame (6) is also internally connected to a smooth rod (63) parallel to the lead screw (61), and both the lead screw (61) and the smooth rod (63) pass through the support (7). The lead screw (61) is threaded to the support (7), and the smooth rod (63) is slidably connected to the support (7).

5. The inorganic coating spraying production device for gas turbine blades according to claim 1, characterized in that: An arc-shaped pressure cap (71) is hinged to the support (7), and an adjusting bolt (72) passes through the other end of the pressure cap (71). The adjusting bolt (72) is threadedly connected to the support (7).

6. The inorganic coating spraying production device for gas turbine blades according to claim 1, characterized in that: A ring frame (11) is installed above the center of the contour track (4) on the spraying station (2). A rotating ring (12) is rotatably installed inside the ring frame (11), and a hose (10) passes through the inside of the rotating ring (12).

7. The inorganic coating spraying production device for gas turbine blades according to claim 1, characterized in that: The lifting frame (6) is equipped with a retaining ring (13) on its upper side, and the rigid tube (9) passes through the inside of the retaining ring (13).

Images