Welding equipment for steam turbine blade machining

Abstract

The utility model discloses welding equipment for steam turbine blade machining, which comprises a worktable, a welding power box mounted on the worktable, an automatic welding mechanism electrically connected to one side of the welding power box, a moving plate arranged on one side of the automatic welding mechanism, a positioning frame arranged on the moving plate, and a pressing positioning component arranged at the top of the positioning frame. A clamping seat is installed at the push-out end of the pressing-down positioning assembly through a bearing, symmetrical second air cylinders are arranged at the bottom of the clamping seat, clamping plates are arranged at the push-out ends of the second air cylinders, the blade root of the blade workpiece is fixed between the clamping plates, limiting mechanisms fixed to the movable plate are arranged on the two sides of the blade top of the blade workpiece, and a supporting rotating assembly is installed at the bottom of the blade workpiece; the multi-face automatic rotary clamping device has the advantages that multi-face automatic rotary clamping can be carried out, welding comprehensiveness and flexibility are improved, self-adaptive positioning is carried out according to blade workpieces of different height specifications, dust collection operation in the welding process is guaranteed, and the operation environment is protected.

Description

Technical Field

[0001] This utility model belongs to the field of turbine blade technology, and more specifically, it relates to a welding equipment for turbine blade processing. Background Technology

[0002] Currently, steam turbines, also known as steam turbine engines, are rotary steam power units. High-temperature, high-pressure steam passes through fixed nozzles, becomes an accelerated airflow, and is then injected onto the blades, causing the rotor equipped with rows of blades to rotate and perform work. A steam turbine is an external combustion rotary machine that converts the thermal energy of steam into mechanical work. Blades are key components of a steam turbine, and one of the most delicate and important components. They withstand the combined effects of high temperature, high pressure, enormous centrifugal force, steam force, steam excitation force, corrosion and vibration, and water droplet erosion in the wet steam zone under extremely harsh conditions. Their aerodynamic performance, machining geometry, surface roughness, installation clearance, operating conditions, and scaling all affect the efficiency and output of the steam turbine, while its structural design, vibration intensity, and operating mode have a decisive impact on the safety and reliability of the unit.

[0003] Existing welding equipment has the following problems when welding turbine blades:

[0004] Inconvenient clamping: Traditional clamping methods often require manual operation, which is not only inefficient, but also makes it difficult to guarantee clamping accuracy. This can easily lead to positional deviations of the blades during the welding process, affecting the welding quality.

[0005] Unable to rotate and change sides during welding: Steam turbine blades have complex shapes, and some parts require welding from different angles to ensure the integrity and quality of the weld. Most existing welding equipment can only weld in one fixed direction. For blades that need to be welded at multiple angles, the blade position often needs to be manually readjusted, which is cumbersome, prone to positioning errors, and not flexible enough.

[0006] Poor dust extraction: Welding process generates a lot of fumes, which not only harm the health of operators, but may also adhere to the welding area and affect the welding quality. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a welding device for turbine blade processing, thereby solving the problems mentioned in the background section.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a welding equipment for turbine blade processing, comprising a worktable, a welding power supply box mounted on the worktable, an automatic welding mechanism electrically connected to one side of the welding power supply box, the automatic welding mechanism mounted on a side mounting frame of the worktable, a movable plate disposed on one side of the automatic welding mechanism, the bottom of the movable plate mounted on the worktable via a sliding kit, the sliding kit consisting of a slide rail and a slider, an adjusting cylinder connected to one end of the movable plate, the adjusting cylinder fixed on the worktable, a positioning frame disposed on the movable plate, a pressing positioning component disposed on the top of the positioning frame, a clamping seat mounted on the pushing end of the pressing positioning component via a bearing, a symmetrical second cylinder disposed at the bottom of the clamping seat, a clamping plate disposed at the pushing end of the second cylinder, the blade root of the blade workpiece being fixed between the clamping plates, a limiting mechanism fixed on the movable plate disposed on both sides of the blade tip of the blade workpiece for rapid limiting, a supporting rotation component mounted on the bottom of the blade workpiece, the supporting rotation component being mounted on the movable plate, the supporting rotation component rotating the blade workpiece 180 degrees and 360 degrees.

[0009] As an optional solution of this utility model, the automatic welding mechanism includes a fourth cylinder, which is symmetrically mounted on the side mounting frame. The fourth cylinder has an adjustment seat at its extension end, and a sliding groove is provided in the adjustment seat. A welding seat is slidably fitted in the sliding groove, and multiple bolts are threaded onto the welding seat to fix it in the adjustment seat. A welding gun is mounted on the welding seat, and the welding gun is electrically connected to the welding power supply box via a wire.

[0010] As an optional solution of this utility model, a dust collection seat is also installed on the top of the welding power box, and a dust collection hood is connected to the bottom of the dust collection seat. The dust collection hood is located directly above the welding. A vacuum cleaner is installed on the dust collection seat to vacuum up the flying slag generated during welding. A dust collection box is connected to one side of the dust collection seat for centralized storage and processing.

[0011] As an optional solution of this utility model, the pressing positioning component includes a first cylinder, which is installed on the top of the positioning frame. The first cylinder is connected to a positioning plate at its extension end, and a guide rod is fixed on the top of the positioning plate. The guide rod is slidably engaged within the positioning frame.

[0012] As an optional solution of this utility model, the limiting mechanism includes a third cylinder, which is vertically mounted on the moving plate. The pushing end of the third cylinder is connected to a lifting seat, and a sliding seat is connected to one side of the lifting seat. A guide post is slidably fitted inside the sliding seat, and the guide post is fixed on the worktable. A double-rod cylinder is installed on the top of the sliding seat, and the pushing end of the double-rod cylinder is connected to a limiting base plate. One end of the limiting base plate is provided with a right-angle slot, which is used to fix the tip part of the blade workpiece.

[0013] As an optional solution of this utility model, the supporting rotation assembly includes a positioning turntable, a rotating shaft connected to the bottom of the positioning turntable, the rotating shaft being fixed in the moving plate by a bearing seat, a driven pulley being mounted on the rotating shaft, a driving pulley being provided on one side of the driven pulley, the driving pulley being installed on the driving end of the driver, and the driving pulley and the driven pulley being driven by a transmission belt.

[0014] As an optional solution of this utility model, the positioning turntable is also provided with an assembly groove, and a positive and negative threaded screw is installed in the assembly groove through a bearing. The positive thread surface and the negative thread surface of the positive and negative threaded screw are threaded with symmetrical limiting blocks. One end of the positive and negative threaded screw is connected to an adjusting head, and the spacing of the limiting blocks on the positive and negative threaded screw is adjusted by adjusting the adjusting head.

[0015] This utility model provides a welding equipment for processing steam turbine blades, which has the following advantages:

[0016] By using the third cylinder and the double-rod cylinder, the limiting base plate can automatically clamp and position the blade tip distribution of the blade workpiece. At the same time, the limiting blocks on the positive and negative thread screws are adjusted to fix the blade tip in all directions. The second cylinder, which is symmetrical at the bottom of the clamping seat, drives the clamping block to quickly clamp the blade root. Combined with the first cylinder, the blade workpiece is driven to descend stably, so that the bottom of the blade workpiece presses against the blade tip.

[0017] The fourth cylinder drives the welding gun close to the blade workpiece to continuously weld the blade root or blade tip. The set driver performs rotational welding, which is flexible. The set dust collector performs dust removal on the welded blade workpiece to prevent dust from sticking to the surface at high temperature. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a partial enlarged view of the present invention;

[0020] Figure 3 This is a front view of the present invention;

[0021] Figure 4This is a cross-sectional view (AA) of the present invention;

[0022] Figure 5 This is a BB cross-sectional view of the present invention.

[0023] In the diagram: 1. Workbench; 101. Sliding assembly; 102. Moving plate; 103. Side mounting bracket; 2. Welding power supply box; 3. Dust collection seat; 301. Dust collector; 302. Dust collection hood; 4. Dust collection box; 5. Positioning frame; 6. First cylinder; 601. Positioning plate; 602. Guide rod; 7. Clamping seat; 8. Second cylinder; 801. Clamping plate; 9. Blade workpiece; 10. Third cylinder; 11. Lifting seat ; 111, Guide post; 112, Slide block; 113, Double-rod cylinder; 114, Limiting base plate; 12, Driven pulley; 121, Transmission belt; 122, Drive pulley; 123, Driver; 13, Positioning turntable; 131, Rotating shaft; 14, Positive and negative thread screw; 141, Limiting block; 15, Adjusting cylinder; 16, Fourth cylinder; 161, Welding seat; 162, Welding gun; 163, Adjusting seat. Detailed Implementation

[0024] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0025] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship 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 addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Please see Figures 1 to 5This utility model provides a technical solution: a welding equipment for turbine blade processing, including a workbench 1, a welding power supply box 2 installed on the workbench 1, an automatic welding mechanism electrically connected to one side of the welding power supply box 2, the automatic welding mechanism being installed on a side mounting frame 103 of the workbench 1, a movable plate 102 being provided on one side of the automatic welding mechanism, the automatic welding mechanism including a fourth cylinder 16, the fourth cylinder 16 being symmetrically installed on the side mounting frame 103, an adjusting seat 163 being provided at the pushing end of the fourth cylinder 16, a sliding groove being provided in the adjusting seat 163, a welding seat 161 being slidably fitted in the sliding groove, and multiple bolts being threadedly connected to the welding seat 161, the welding seat 161 being fixed in the adjusting seat 163 by the multiple bolts, thereby realizing height adjustment, a welding gun 162 being installed on the welding seat 161, the welding gun 162 being electrically connected to the welding power supply box 2 through wires, continuously providing welding power.

[0028] The top of the welding power supply box 2 is also equipped with a dust collection seat 3. The bottom of the dust collection seat 3 is connected to a dust collection hood 302, which is located directly above the welding. A vacuum cleaner 301 is installed on the dust collection seat 3 to vacuum up the flying slag generated during welding. A dust collection box 4 is connected to one side of the dust collection seat 3 for centralized storage.

[0029] The bottom of the movable plate 102 is mounted on the worktable 1 via a sliding kit 101. The sliding kit 101 consists of a slide rail and a slider, which are common components. One end of the movable plate 102 is connected to an adjusting cylinder 15, which is fixed on the worktable 1. The adjusting cylinder 15 drives the movable plate 102 to move horizontally as a whole. A positioning frame 5 is provided on the movable plate 102. A pressing positioning component is provided on the top of the positioning frame 5. A clamping seat 7 is installed on the push-out end of the pressing positioning component via a bearing.

[0030] The downward positioning assembly includes a first cylinder 6, which is mounted on the top of the positioning frame 5. The first cylinder 6 has a positioning plate 601 connected to its extension end. A guide rod 602 is fixed to the top of the positioning plate 601. The guide rod 602 slides within the positioning frame 5 to ensure the stable lifting and lowering of the positioning plate 601. A symmetrical second cylinder 8 is provided at the bottom of the clamping seat 7. A clamping plate 801 is provided at the extension end of the second cylinder 8. The blade root of the blade workpiece 9 is fixed between the clamping plates 801. Limiting mechanisms are provided on both sides of the blade tip of the blade workpiece 9 and fixed on the moving plate 102. The limiting mechanisms are used for rapid limiting to ensure the welding stability of the blade workpiece 9.

[0031] The limiting mechanism includes a third cylinder 10, which is vertically mounted on a moving plate 102. The extension end of the third cylinder 10 is connected to a lifting seat 11, and a slide 112 is connected to one side of the lifting seat 11. A guide post 111 is slidably fitted inside the slide 112 and is fixed on the worktable 1. A double-rod cylinder 113 is mounted on the top of the slide 112. The extension end of the double-rod cylinder 113 is connected to a limiting base plate 114. A right-angle slot is provided at one end of the limiting base plate 114 to further fix the tip of the blade workpiece 9. A support rotation assembly is mounted on the bottom of the blade workpiece 9 and is mounted on the moving plate 102. The support rotation assembly rotates the blade workpiece 9 180 degrees and 360 degrees to improve the overall welding performance.

[0032] The supporting rotating assembly includes a positioning turntable 13. A rotating shaft 131 is connected to the bottom of the positioning turntable 13. The rotating shaft 131 is fixed in the moving plate 102 by a bearing seat. A driven pulley 12 is mounted on the rotating shaft 131. A driving pulley 122 is provided on one side of the driven pulley 12. The driving pulley 122 is installed at the driving end of the driver 123. The driving pulley 122 and the driven pulley 12 are driven by a transmission belt 121, thereby realizing the rotation operation of the positioning turntable 13. An assembly groove is also provided in the positioning turntable. A positive and negative thread screw 14 is installed in the assembly groove by a bearing. The positive and negative thread surfaces of the positive and negative thread screw 14 are threaded with symmetrical limit blocks 141. An adjusting head is connected to one end of the positive and negative thread screw 14. The spacing of the limit blocks 141 on the positive and negative thread screw 14 is adjusted by the adjusting head to ensure the rapid positioning of the blade workpiece 9.

[0033] The specific usage and function of this embodiment are as follows: First, the blade tip or blade root to be welded is fixed. When fixing the blade tip, the third cylinder 10 and the double-rod cylinder 113 are activated to drive the limiting base plate 114 to automatically clamp and position. At the same time, the positive and negative thread screws 14 are adjusted to fix the blade tip in all directions, fixing the blade workpiece 9 in the clamping seat 7. The second cylinder 8 is activated to drive the clamping block to quickly clamp the blade root. After positioning is completed, the first cylinder 6 is activated to drive the clamping seat 7 below the positioning plate 601 to descend stably, so that the bottom of the blade workpiece 9 presses against the blade tip to ensure stability. After setting, start the fourth cylinder 16 to drive the welding gun 162 close to the blade workpiece 9 and continuously weld the blade root or blade tip that needs to be welded. After completing the welding on one side, release the limiting base plate 114, start the driver 123 to rotate and change the surface, and then clamp the blade tip again to ensure overall stability. After the welding is completed, start the vacuum cleaner 301 to vacuum the blade workpiece 9 to prevent dust from sticking to the surface at high temperature. After the vacuuming is completed, start the adjusting cylinder 15 to drive the moving plate 102 to move and take out the welded blade workpiece 9 to proceed to the next stage of operation.

[0034] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A welding equipment for processing steam turbine blades, characterized in that: The system includes a workbench (1), on which a welding power supply box (2) is mounted. An automatic welding mechanism is electrically connected to one side of the welding power supply box (2). The automatic welding mechanism is mounted on a side mounting bracket (103) of the workbench (1). A movable plate (102) is provided on one side of the automatic welding mechanism. The bottom of the movable plate (102) is mounted on the workbench (1) via a sliding assembly (101), which consists of a slide rail and a slider. One end of the movable plate (102) is connected to an adjusting cylinder (15), which is fixed to the workbench (1). A positioning frame (5) is provided on the movable plate (102). A pressing positioning component is provided at the top. The pressing positioning component has a clamping seat (7) installed at the push-out end via a bearing. A symmetrical second cylinder (8) is provided at the bottom of the clamping seat (7). A clamping plate (801) is provided at the push-out end of the second cylinder (8). The blade root of the blade workpiece (9) is fixed between the clamping plates (801). Limiting mechanisms are provided on both sides of the blade tip of the blade workpiece (9) and fixed on the moving plate (102). The limiting mechanism is used for rapid limiting. A supporting rotation component is installed at the bottom of the blade workpiece (9). The supporting rotation component is installed on the moving plate (102). The supporting rotation component rotates the blade workpiece (9) by 180 degrees and 360 degrees.

2. The welding equipment for turbine blade processing according to claim 1, characterized in that: The automatic welding mechanism includes a fourth cylinder (16), which is symmetrically mounted on the side mounting bracket (103). The fourth cylinder (16) has an adjustment seat (163) at its push-out end. The adjustment seat (163) has a sliding groove, and a welding seat (161) is slidably fitted in the sliding groove. The welding seat (161) is threaded with multiple bolts, which fix the welding seat (161) in the adjustment seat (163). A welding gun (162) is mounted on the welding seat (161), and the welding gun (162) is electrically connected to the welding power supply box (2) through a wire.

3. The welding equipment for turbine blade processing according to claim 2, characterized in that: The welding power supply box (2) is also equipped with a dust collection seat (3) on top. The bottom of the dust collection seat (3) is connected to a dust collection hood (302). The dust collection hood (302) is located directly above the welding. A vacuum cleaner (301) is installed on the dust collection seat (3). The vacuum cleaner (301) is used to vacuum the flying slag generated during welding. A dust collection box (4) is connected to one side of the dust collection seat (3). The dust collection box (4) is used for centralized storage and processing.

4. The welding equipment for turbine blade processing according to claim 1, characterized in that: The pressing positioning assembly includes a first cylinder (6), which is mounted on the top of the positioning frame (5). The first cylinder (6) is connected to a positioning plate (601) at its push-out end. A guide rod (602) is fixed on the top of the positioning plate (601), and the guide rod (602) is slidably fitted inside the positioning frame (5).

5. The welding equipment for turbine blade processing according to claim 1, characterized in that: The limiting mechanism includes a third cylinder (10), which is vertically mounted on a moving plate (102). The third cylinder (10) is connected to a lifting seat (11) at its push-out end. A slide (112) is connected to one side of the lifting seat (11). A guide post (111) is slidably fitted inside the slide (112). The guide post (111) is fixed on the worktable (1). A double-rod cylinder (113) is installed on the top of the slide (112). The push-out end of the double-rod cylinder (113) is connected to a limiting base plate (114). A right-angle slot is provided at one end of the limiting base plate (114) to fix the tip of the blade workpiece (9).

6. The welding equipment for turbine blade processing according to claim 1, characterized in that: The supporting rotating assembly includes a positioning turntable (13), the bottom of which is connected to a rotating shaft (131). The rotating shaft (131) is fixed inside the moving plate (102) by a bearing seat. A driven pulley (12) is mounted on the rotating shaft (131). A driving pulley (122) is provided on one side of the driven pulley (12). The driving pulley (122) is installed on the driving end of the driver (123). The driving pulley (122) and the driven pulley (12) are driven and cooperated by a transmission belt (121).

7. The welding equipment for turbine blade processing according to claim 6, characterized in that: The positioning turntable is also provided with an assembly groove, in which a forward and reverse threaded screw (14) is installed by bearings. The forward and reverse threaded surfaces of the forward and reverse threaded screw (14) are threaded with symmetrical limit blocks (141). One end of the forward and reverse threaded screw (14) is connected to an adjustment head, and the spacing of the limit blocks (141) on the forward and reverse threaded screw (14) is adjusted by the adjustment head.

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