Three-dimensional scanning device for steam turbine blade detection

Abstract

The utility model relates to a three-dimensional scanning device for steam turbine blade detection, which comprises a working table and a scanning assembly arranged on the working table, the scanning assembly comprises a turntable, a fixed table and a functional block, the fixed table is fixedly arranged on the working table, the turntable is sleeved outside the edge of the fixed table, and the functional block is sleeved outside the fixed table. The rotating disc is rotatably installed on the table top of the workbench, a fixing rod is fixedly installed on the outer wall of the upper portion of the rotating disc, one end of the functional block is installed on the fixing rod in a sleeving mode, a sleeve is fixedly installed on one side of the functional block, and a notch is formed in the outer wall of one side of the sleeve in a penetrating mode. The sleeve sleeves the grip of the three-dimensional scanner through the notch, the position height of the three-dimensional scanner can be adjusted for turbine blades of different sizes, the best shooting position is achieved, the turntable is driven to rotate at a constant speed through gear transmission, the scanner can scan the whole blade at a constant speed, and the scanning precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of steam turbine blade technology, and in particular to a three-dimensional scanning device for steam turbine blade inspection. Background Technology

[0002] During turbine operation, a large number of water droplets separate from the steam. These droplets impact the surface of the turbine blades, causing water erosion. This erosion is particularly severe on the last-stage blades of the low-pressure cylinder due to the higher humidity of the steam.

[0003] Therefore, turbine blades require frequent maintenance. To study water erosion on turbine blades, operators use handheld 3D scanners to scan the entire blade, inputting the data into a computer to create a 3D model for observing water erosion on the blade surface. However, handheld scanning makes it difficult to precisely control the scanning time and angle. If the model input into the computer shows significant deviations, a rescan is necessary, impacting work efficiency. Utility Model Content

[0004] The purpose of this application is to provide a three-dimensional scanning device for turbine blade inspection, so as to solve the problems mentioned in the background art.

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

[0006] A three-dimensional scanning device for inspecting steam turbine blades includes a worktable and a scanning assembly mounted on the worktable. The scanning assembly includes a turntable, a fixed platform, and a functional block. The fixed platform is fixedly mounted on the worktable. The turntable is fitted around the edge of the fixed platform and rotatably mounted on the worktable surface. A fixing rod is fixedly mounted on the upper outer wall of the turntable. One end of the functional block is fitted onto the fixing rod. A sleeve is fixedly mounted on one side of the functional block. A slot is formed through one side of the outer wall of the sleeve, and the sleeve is fitted onto the handle of the three-dimensional scanner through the slot.

[0007] Preferably, a groove is provided on one side of the functional block, and the functional block is sleeved on the outer wall of the fixing rod through the groove. A threaded tube is fixedly installed on the outer wall of the functional block, and the threaded tube communicates with the groove. A screw is threaded into the threaded tube of the functional block. Two cylinders are symmetrically installed on the platform of the fixing table, and a gap is left between the two cylinders.

[0008] Preferably, a fixing plate is fixedly installed on one outer wall of the workbench, the fixing plate being parallel to the workbench surface. A drive wheel is positioned between the fixing plate and the workbench. A motor is fixedly installed above the fixing plate, and the output end of the motor passes through the fixing plate and is fixedly connected to the center of the drive wheel. A driven wheel is mounted on the workbench surface via bearings. Both the driven wheel and the drive wheel are gears, and their teeth mesh. A turntable is mounted above the driven wheel, and the upper outer wall of the driven wheel is fixedly connected to the turntable. A baffle is fixedly installed on the outer wall of the turntable on the side away from the fixing rod.

[0009] The beneficial effects of this utility model are: by setting up a scanning component, the functional block uses a sleeve to connect with the handle of the 3D scanner. When facing turbine blades of different sizes, the position and height of the 3D scanner can be adjusted to achieve the best shooting position. Through gear transmission, the turntable is driven to rotate at a uniform speed, so that the scanner can scan the entire blade at a uniform speed, increasing the scanning accuracy. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the connection structure between the turntable and the fixed platform in this utility model;

[0012] Figure 3 This is a schematic diagram of the connection structure between the functional block and the fixing rod in this utility model.

[0013] In the diagram: 1. Workbench; 2. Fixed plate; 3. Motor; 4. Drive wheel; 5. Driven wheel; 6. Turntable; 7. Fixed platform; 8. Fixed rod; 9. Functional block; 10. Cylinder; 11. Baffle; 12. Sleeve; 13. Screw. Detailed Implementation

[0014] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings, so that the advantages and features of this utility model can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of this utility model. The directional terms mentioned in this utility model, such as "up," "down," "front," "back," "left," "right," "top," and "bottom," are only for reference to the accompanying drawings. Therefore, the directional terms used are for the purpose of explaining and understanding this utility model, and not for limiting this utility model.

[0015] like Figure 1-3The three-dimensional scanning device for turbine blade inspection shown includes a worktable 1 and a scanning assembly mounted on the worktable 1. The scanning assembly includes a turntable 6, a fixed platform 7, and a functional block 9. The fixed platform 7 is fixedly mounted on the worktable 1. The turntable 6 is sleeved on the outer edge of the fixed platform 7 and is rotatably mounted on the table surface of the worktable 1. A fixing rod 8 is fixedly mounted on the upper outer wall of the turntable 6. One end of the functional block 9 is sleeved on the fixing rod 8. A sleeve 12 is fixedly mounted on one side of the functional block 9. A slot is opened through one side of the outer wall of the sleeve 12, and the sleeve 12 is sleeved on the handle of the three-dimensional scanner through the slot.

[0016] A sliding groove is provided on one side of the functional block 9. The functional block 9 is sleeved on the outer wall of the fixed rod 8 through the sliding groove. A threaded tube is fixedly installed on the outer wall of the functional block 9. The threaded tube communicates with the sliding groove. A screw 13 is installed in the threaded tube of the functional block 9. Two cylinders 10 are symmetrically installed on the platform of the fixed table 7, with a gap between the two cylinders 10.

[0017] A fixed plate 2 is fixedly installed on one outer wall of the workbench 1. The fixed plate 2 is parallel to the table surface of the workbench 1. A drive wheel 4 is provided between the fixed plate 2 and the workbench 1. A motor 3 is fixedly installed above the fixed plate 2. The output end of the motor 3 passes through the fixed plate 2 and is fixedly connected to the center of the drive wheel 4. A driven wheel 5 is installed on the table surface of the workbench 1 via bearings. Both the driven wheel 5 and the drive wheel 4 are gears, and the driven wheel 5 and the drive wheel 4 mesh with each other. A turntable 6 is installed above the driven wheel 5. The upper outer wall of the driven wheel 5 is fixedly connected to the turntable 6. A baffle 11 is fixedly installed on the outer wall of the turntable 6 away from the fixed rod 8.

[0018] Example: The end of the turbine blade is placed on the platform of the fixed table 7, with the bottom of the blade located between two cylinders 10. When the cylinders 10 are started, the output ends of the two cylinders 10 clamp the bottom of the turbine blade. The motor 3 on the fixed plate 2 is started, driving the drive wheel 4 to rotate. The drive wheel 4 drives the driven wheel 5 on the worktable 1 to rotate. The driven wheel 5 drives the turntable 6 to rotate at the edge of the fixed table 7. The turntable 6 drives the 3D scanner on the functional block 9 to scan the turbine blade on the fixed table 7. The baffle 11 corresponds to the position of the 3D scanner. The baffle 11 serves as the background of the turbine blade, ensuring that the lens of the scanner only scans the turbine blade.

[0019] Tighten screw 13 so that its end abuts against the outer wall of fixing rod 8 to fix functional block 9. Loosen screw 13 so that functional block 9 can slide up and down on the outer wall of fixing rod 8. Adjust to a suitable position and then tighten screw 13 to achieve the effect of adjustable height of functional block 9. Functional block 9 uses sleeve 12 to connect with the handle of 3D scanner. When facing turbine blades of different sizes, the position and height of 3D scanner can be adjusted to achieve the best shooting position.

[0020] It should be noted that the parts not covered in this utility model are the same as or can be implemented using existing technology; the various drives in this utility model can be implemented by corresponding power structures such as cylinders, oil cylinders, electric cylinders, and motors in conjunction with connecting rods, guide rods, etc., and are not limited to the structures described in the specification and the drawings.

[0021] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A three-dimensional scanning device for inspecting steam turbine blades, comprising a worktable (1) and a scanning assembly mounted on the worktable (1), characterized in that: The scanning assembly includes a turntable (6), a fixed stage (7), and a functional block (9). The fixed stage (7) is fixedly installed on the worktable (1). The turntable (6) is fitted around the edge of the fixed stage (7). The turntable (6) is rotatably installed on the table surface of the worktable (1). A fixing rod (8) is fixedly installed on the upper outer wall of the turntable (6). One end of the functional block (9) is fitted onto the fixing rod (8). A sleeve (12) is fixedly installed on one side of the functional block (9). A slot is opened through one side of the outer wall of the sleeve (12). The sleeve (12) is fitted onto the handle of the 3D scanner through the slot.

2. The three-dimensional scanning device for turbine blade inspection according to claim 1, characterized in that: A fixing plate (2) is fixedly installed on one side of the outer wall of the workbench (1). The fixing plate (2) is parallel to the table surface of the workbench (1). A drive wheel (4) is provided between the fixing plate (2) and the workbench (1). A motor (3) is fixedly installed above the fixing plate (2). The output end of the motor (3) passes through the fixing plate (2) and is fixedly connected to the center of the drive wheel (4).

3. The three-dimensional scanning device for turbine blade inspection according to claim 2, characterized in that: A driven wheel (5) is mounted on the table surface of the workbench (1) via a bearing. Both the driven wheel (5) and the driving wheel (4) are gears. The driven wheel (5) and the driving wheel (4) are engaged by their teeth. The turntable (6) is mounted above the driven wheel (5). The upper outer wall of the driven wheel (5) is fixedly connected to the turntable (6). A baffle (11) is fixedly mounted on the outer wall of the turntable (6) away from the fixed rod (8).

4. The three-dimensional scanning device for turbine blade inspection according to claim 1, characterized in that: A groove is provided on one side of the functional block (9). The functional block (9) is sleeved on the outer wall of the fixed rod (8) through the groove. A threaded tube is fixedly installed on the outer wall of the functional block (9). The threaded tube is connected to the groove. A screw (13) is installed in the threaded tube of the functional block (9).

5. The three-dimensional scanning device for turbine blade inspection according to claim 1, characterized in that: Two cylinders (10) are symmetrically installed on the platform of the fixed platform (7), with a gap between the two cylinders (10).

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