Track type movable guide vane variable-station thermal spraying device and using method

Abstract

The invention provides a rail type movable guide vane variable-station thermal spraying device and a using method. The rail type movable guide vane variable-station thermal spraying device comprises a base, rails arranged in an array mode, guide vane supporting frames arranged on the rails in a sliding mode, a first connecting frame and a second connecting frame, wherein the first connecting frame and the second connecting frame are connected with the odd-numbered-column supporting frame and the even-numbered-column supporting frame respectively. The guide vane supporting frame is provided with an arc-shaped pillow and a sliding plate with a T-shaped sliding groove, a limiting screw and a limiting screw sleeve are arranged in the sliding groove, and the guide vanes can be switched between the horizontal state and the vertical state by switching the positions of the limiting screw and the limiting screw sleeve. During spraying, the connecting frame is pushed to enable the guide vanes to be unfolded or retracted and aligned in a staggered mode, to-be-sprayed areas are concentrated, and the path of the spray gun is optimized. The device is simple in structure, flexible to adjust, capable of completing efficient spraying of the four faces of the guide vane at a time, capable of remarkably improving coating uniformity and operation efficiency, suitable for abrasion-resistant protection of the water turbine guide vane in the high-sand-content river environment and good in engineering application value.

Description

Technical Field

[0001] This invention relates to the field of spraying equipment, and more specifically to a thermal spraying device with a variable position and a method of use for a track-type movable guide vane. Background Technology

[0002] Against the backdrop of increasing global water resource development and utilization, hydropower, as a crucial component of clean energy, plays a key role in promoting sustainable development. However, hydraulic machinery, especially turbines, faces a severe challenge during operation—sediment abrasion. In China, due to the high sediment content of rivers, particularly the Yellow River, the problem of severe erosion of hydraulic machinery is particularly prominent. The moving guide vanes in turbines are among the most susceptible to wear; these components guide water flow into the runner to generate power and regulate the direction and speed of the flow. Due to prolonged exposure to high-speed, gravelly water, the leading edge, trailing edge, and back of the guide vanes near the inlet edge are especially prone to severe erosion. This erosion not only leads to equipment damage and reduced efficiency but also increases maintenance costs and downtime, seriously affecting the economic benefits and safe operation of hydropower stations.

[0003] To combat this severe abrasion problem, thermal spraying technology is widely used as an effective surface treatment method to enhance the wear resistance of hydraulic machinery components. By spraying a layer of wear-resistant material, such as tungsten carbide or polyurethane composite resin mortar, onto the surface of guide vanes, their wear resistance can be significantly improved, their service life extended, and maintenance frequency reduced. Nevertheless, traditional thermal spraying processes still face some challenges in practical applications: for guide vanes with complex structures, multiple surfaces need to be sprayed, requiring multiple planning of the spraying path to ensure the coating covers all critical areas. This often necessitates frequent reprogramming and repositioning, increasing operational complexity and time costs.

[0004] Faced with the aforementioned challenges, the market urgently needs a spraying solution capable of efficiently handling movable guide vanes. Against this backdrop, this invention proposes a track-mounted, variable-position thermal spraying device for movable guide vanes. This device significantly reduces spraying time and improves work efficiency while ensuring coating quality. It not only solves the problems in existing technologies but also meets the current demand for efficient and reliable equipment in the rapidly developing water conservancy industry, possessing significant practical value and broad application prospects. This innovative design concept enhances the overall efficiency and economic benefits of movable guide vane spraying, providing strong support for the maintenance and protection of water conservancy machinery. Summary of the Invention

[0005] The main objective of this invention is to provide a thermal spraying device and method for using a track-type movable guide vane with variable position, thereby solving the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: it includes a base, on which multiple arrayed tracks are fixedly mounted, and on which sliding guide vane support frames are mounted, with the guide vanes abutting against the guide vane support frames; The guide vane support frame ends on the odd-numbered tracks are connected by a first connecting frame, and the guide vane support frame ends on the even-numbered tracks are connected by a second connecting frame. The guide vane support frames on the odd-numbered tracks and the guide vane support frames on the even-numbered tracks are slidably arranged opposite each other. The guide vane support frame has arc-shaped pillows fixed at both ends of the slide plate. The central shaft of the guide vane rests against the arc-shaped pillows at both ends. The slide plate has sliding grooves on both sides. A vertical through slot is provided in the middle of the sliding groove. The sliding grooves are connected to each other. A sliding limit screw sleeve and a limit screw are provided inside. The limit screw and the limit screw sleeve are used to abut against the guide vane to limit and fix it.

[0007] Preferably, the bottom sides of the track are fixedly connected to the base by multiple fasteners.

[0008] Preferably, the base has multiple threaded holes on both sides, and the bottom sides of the first connecting bracket and the second connecting bracket are connected to the threaded holes by bolts; The threaded holes are located at the end face spraying station and the surface spraying station, respectively. The sliding first connecting frame and the second connecting frame drive the guide vane support frame to move to the corresponding station for spraying.

[0009] Preferably, the bottom ends of the skateboard are connected to the track via sliders, the arc-shaped pillow is provided with threaded holes, and the first connecting frame and the second connecting frame are connected to the threaded holes via bolts.

[0010] Preferably, the limiting screw sleeve and the bottom of the limiting screw are fixed to the slide plate by double nuts, and the height of the limiting screw sleeve and the limiting screw is adjusted by the double nuts; The outer side of the limiting screw sleeve abuts against both sides of the guide vane to keep the guide vane in a vertical position at the end face spraying station; The end of the limiting screw abuts against both sides of the guide vane to keep the guide vane in a horizontal position, which is the surface spraying station.

[0011] Preferably, a support pad is fixed to the top of the limiting screw. The support pad is made of polytetrafluoroethylene and abuts against the guide vane.

[0012] Preferably, when the limiting screw sleeve enters the slot, it is used to support the guide vane in a vertical state for end face spraying, and the limiting screw slides to the end of the groove to avoid space. When the limiting screw enters the slot, it is used to support the guide vane in a horizontal state for surface spraying. The limiting screw sleeve slides to the end of the slide groove to avoid space.

[0013] Preferably, the slide and the slot are connected in a T-shape so that the limiting screw sleeve and the limiting screw can move alternately into the slot.

[0014] A method for using a track-type movable guide vane variable-position thermal spraying device, the steps of which are as follows: S1. The guide vanes are staggered on each guide vane support frame so that the part of the guide vane to be sprayed is concentrated in the middle area of ​​the device. The support pad at the top of the limiting screw abuts against the guide vane so that the guide vane is in a horizontal state. S2. Spray the upper surface of the guide vane with the spray gun in a vertical direction. After the upper surface is sprayed and dried, flip the guide vane so that the lower surface is facing up, and repeat the spraying and drying process. S3. Remove the limiting screw, rotate the guide vane to a vertical position, and move the limiting screw sleeve into the slot to lock the limiting on both sides of the guide vane; S4. Spray the upper part of both ends of the guide vane with the spray gun from the horizontal direction, flip the guide vane again so that the lower part of both ends of the guide vane is facing upward, and spray it with the spray gun and let it dry to complete the spraying of the guide vane.

[0015] Preferably, before end-face spraying, the second connecting frame is pushed to align the end faces of the guide vanes on the odd-numbered and even-numbered tracks, so that the spray gun has only two spraying paths at both ends of the guide vanes.

[0016] This invention provides a thermal spraying device and method for using a track-type movable guide vane with variable position, which has the following advantages: 1. Through the automatic switching mechanism of horizontal / vertical dual stations, four-sided spraying can be completed without disassembling the guide vanes; avoiding repeated clamping errors and manual intervention, and significantly shortening the spraying cycle of a single part; 2. The guide vanes are automatically aligned at the end face station to ensure that all guide vane end faces are on the same plane and the spray gun trajectory is uniform; the limiting mechanism precisely fixes the guide vane posture to avoid shaking and displacement during the spraying process; the support pad is made of polytetrafluoroethylene, which can fix the substrate without damaging it and ensure the coating adhesion quality. 3. The track spacing can be flexibly adjusted by fasteners; the height of the limit screw can be infinitely adjusted by double nuts; the whole adopts a modular track + carriage design, which is compatible with a variety of guide vane specifications; the processing difficulty is low and it is easy to deploy in small and medium-sized hydropower stations or maintenance workshops. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is an isometric view of the overall structure of the present invention; Figure 2 This is a top view of the overall structure of the invention; Figure 3 This is a circumferential view of the guide vane support frame of the present invention; Figure 4 This is a schematic diagram of the guide vane surface spraying operation of the present invention; Figure 5 This is a schematic diagram of the guide vane end face spraying operation of the present invention; In the diagram: 1. Base; 2. Rail; 3. Fastener; 4. Connecting ear; 5. First connecting frame; 6. Second connecting frame; 7. Guide vane support frame; 701. Slide plate; 702. Arc-shaped pillow; 703. Slider; 704. Slot; 705. Limiting screw sleeve; 706. Limiting screw; 707. Support pad; 708. Threaded hole; 709. Guide vane; 8. Detailed Implementation

[0018] Example 1 like Figures 1-5 As shown, a track-type movable guide vane variable station thermal spraying device includes a base 1, an array of multiple tracks 2 fixed on the base 1, a sliding guide vane support frame 7 on the track 2, and a guide vane 8 abutting against the guide vane support frame 7. The guide vane support frame 7 on the odd-numbered track 2 is connected at its end by the first connecting frame 5, and the guide vane support frame 7 on the even-numbered track 2 is connected at its end by the second connecting frame 6. The guide vane support frame 7 on the odd-numbered track 2 and the guide vane support frame 7 on the even-numbered track 2 are arranged to slide relative to each other. The guide vane support frame 7 has arc-shaped pillows 702 fixed at both ends of the slide plate 701. The central shaft of the guide vane 8 rests against the arc-shaped pillows 702 at both ends. The slide plate 701 has sliding grooves 704 on both sides. The middle of the sliding groove 704 has a vertical through slot 705. The sliding grooves 704 are connected to each other. The sliding limit screw sleeve 706 and the limit screw 707 are provided inside. The limit screw 707 and the limit screw sleeve 706 are used to abut against the guide vane 8 to limit and fix it.

[0019] The base 1 is fixed to the ground on both sides of its bottom via connecting ears 4. The two ends of the central axis of the guide vane 8 abut against the arc-shaped pillows 702 at both ends of the slide plate 701. The guide vane 8 is fixed to the guide vane support frame 7 via limiting screws 707 or limiting screw sleeves 706, keeping it in a horizontal or vertical state, which facilitates the spray gun to spray the upper and lower surfaces and two end faces of the guide vane 8. In this example, there are 8 tracks 2 on the base 1. The guide vane support frames 7 on the 8 tracks 2 are arranged alternately. The ends of the guide vane support frames 7 on the odd-numbered 4 tracks 2 are connected by the first connecting frame 5, and the ends of the guide vane support frames 7 on the even-numbered 4 tracks 2 are connected by the second connecting frame 6. By pushing the first connecting frame 5 and the second connecting frame 6 to move, the guide vane support frames 7 on the tracks 2 are moved. The guide vanes 8 are placed alternately on the guide vane support frames 7 so that the area to be sprayed is concentrated in the middle area of ​​the device, shortening the spray gun movement trajectory and facilitating the planning of the spraying path.

[0020] Preferably, the bottom sides of the track 2 are fixedly connected to the base 1 by multiple fasteners 3. The spacing between each track 2 can be adjusted according to the size of the guide vane 8 to ensure that the gap between two adjacent guide vanes 8 is small when the guide vane 8 is in a horizontal state, thus ensuring spraying efficiency; the fasteners 3 can fix the track 2 and make adjustment relatively convenient.

[0021] Preferably, the base 1 has multiple threaded holes on both sides, and the bottom sides of the first connecting bracket 5 and the second connecting bracket 6 are connected to the threaded holes by bolts; The threaded holes are located at the end face spraying station and the surface spraying station, respectively. The sliding first connecting frame 5 and the second connecting frame 6 drive the guide vane support frame 7 to move to the corresponding station for spraying.

[0022] The first connecting frame 5 and the second connecting frame 6 can drive the guide vane support frame 7 to slide against the track 2. To ensure the spraying operation of the guide vane 8, the first connecting frame 5 and the second connecting frame 6 are connected and fixed to the base 1 by bolts. During surface spraying, the staggered guide vane support frames 7 need to be unfolded so that the guide vane 8 can be spread out to facilitate spraying by the spray gun. During end face spraying, the staggered guide vane support frames 7 need to be retracted so that the guide vanes 8 are stacked together and the two end faces of the guide vane 8 are aligned to facilitate the planning of the spray gun's movement trajectory.

[0023] Preferably, the bottom ends of the slide plate 701 are connected to the track 2 via sliders 703, and the arc-shaped pillow 702 is provided with threaded holes 709. The first connecting frame 5 and the second connecting frame 6 are connected to the threaded holes 709 by bolts. Multiple guide vane support frames 7 are connected by the first connecting frame 5 and the second connecting frame 6, dividing them into left and right parts according to odd and even numbers. The guide vane support frames 7 on the first connecting frame 5 and the second connecting frame 6 can be staggered to retract or expand, and are toothed in engagement.

[0024] Preferably, the bottom of the limiting screw sleeve 706 and the limiting screw 707 are fixed to the slide plate 701 by double nuts, and the height of the limiting screw sleeve 706 and the limiting screw 707 is adjusted by the double nuts; The outer side of the limiting screw sleeve 706 abuts against both sides of the guide vane 8 so that the guide vane 8 is in a vertical state and located at the end face spraying station; The end of the limiting screw 707 abuts against both sides of the guide vane 8 to keep the guide vane 8 in a horizontal state, which is the surface spraying station.

[0025] The bottom of the limiting screw sleeve 706 and the limiting screw 707 are screws that are locked to the slide plate 701 by double nuts. The height of the limiting screw 707 can also be adjusted by the double nuts to accommodate the support and fixation of guide vanes 8 of different sizes; for example... Figure 5As shown, during end face spraying, the outer side of the limiting screw sleeve 706 abuts against both sides of the guide vane 8 to keep the guide vane 8 in a vertical state; during surface spraying, the end of the limiting screw 707 abuts against both sides of the guide vane 8 to keep the guide vane 8 in a horizontal state.

[0026] Preferably, a support pad 708 is fixed to the top of the limiting screw 707. The support pad 708 is made of polytetrafluoroethylene and rests against the guide vane 8. The support pad 708 can prevent damage to the guide vane 8.

[0027] Preferably, when the limiting screw sleeve 706 enters the slot 705, it is used to support the guide vane 8 in a vertical state for end face spraying, and the limiting screw 707 slides to the end of the slide groove 704 to avoid space. When the limiting screw 707 enters the slot 705, it is used to support the guide vane 8 in a horizontal state for surface spraying. The limiting screw sleeve 706 slides to the end of the slide groove 704 to avoid space.

[0028] The slide groove 704 and the slot 705 are connected in a T-shape so that the limiting screw sleeve 706 and the limiting screw 707 can move alternately into the slot 705.

[0029] The limiting screw 707 and the limiting screw sleeve 706 are used to fix the guide vane 8 for end face spraying and surface spraying, respectively. The limiting screw 707 and the limiting screw sleeve 706 can move freely within the T-shaped through groove formed by the sliding groove 704 and the retaining groove 705 to adjust their positions, facilitating timely deployment during use. The length of the sliding groove 704 is greater than the length of the guide vane 8 blade, so that the limiting screw sleeve 706 and the limiting screw 707 avoid the spraying area of ​​the guide vane 8 when not in use, thus preventing interference with the movement trajectory of the spray gun.

[0030] A method for using a track-type movable guide vane variable-position thermal spraying device, the steps of which are as follows: S1. Guide vanes 8 are staggered on each guide vane support frame 7 so that the part of the guide vane 8 to be sprayed is concentrated in the middle area of ​​the device. The support pad 708 at the top of the limiting screw 707 abuts against the guide vane 8 so that the guide vane 8 is in a horizontal state. S2. The spray gun sprays the upper surface of the guide vane 8 from the vertical direction. After the upper surface is sprayed and dried, the guide vane 8 is flipped so that the lower surface is facing up. The spray gun is then used to spray and dry the guide vane 8 repeatedly. S3. Remove the limiting screw 707, rotate the guide vane 8 to a vertical position, and move the limiting screw sleeve 706 into the slot 705 to lock the two sides of the guide vane 8. S4. Spray the upper part of both ends of the guide vane 8 with the spray gun from the horizontal direction, flip the guide vane 8 again so that the lower part of both ends of the guide vane 8 is facing upward, and spray it with the spray gun and let it dry, thus completing the spraying of the guide vane 8.

[0031] Preferably, before end-face spraying, the second connecting frame 6 is pushed to align the end faces of the guide vanes 8 on the odd-numbered and even-numbered tracks 2, so that the spray gun has only two spraying paths at both ends of the guide vanes 8. The spray gun only needs to follow two horizontal paths to complete the spraying of all guide vane end faces; reducing the idle stroke and number of start-stop cycles of the spray gun, improving the spraying cycle time; and ensuring consistent spraying distance and angle, resulting in a more uniform coating thickness.

[0032] The device is easy to manufacture and connect, and its track-based movement system allows for flexible changes in workstations, maximizing the use of the spray booth space. The multi-station, variable-station design allows for simultaneous, efficient spraying of multiple guide vanes, effectively improving overall spraying efficiency.

[0033] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A thermal spraying device with a track-type movable guide vane and variable position, characterized in that: Includes a base (1), on which multiple tracks (2) in an array are fixedly mounted, and on which a sliding guide vane support frame (7) is mounted, and the guide vane (8) abuts against the guide vane support frame (7); The guide vane support frame (7) on the odd-numbered track (2) is connected at the end by the first connecting frame (5), and the guide vane support frame (7) on the even-numbered track (2) is connected at the end by the second connecting frame (6). The guide vane support frame (7) on the odd-numbered track (2) and the guide vane support frame (7) on the even-numbered track (2) are slidably arranged opposite to each other. The guide vane support frame (7) has arc-shaped pillows (702) fixed at both ends of the slide plate (701). The central axis of the guide vane (8) rests against the arc-shaped pillows (702). The slide plate (701) has sliding grooves (704) on both sides. The middle of the sliding groove (704) has a vertical through slot (705). The sliding groove (704) is connected to the sliding groove (704). The sliding groove (704) has a sliding limit screw sleeve (706) and a limit screw (707) inside. The limit screw (707) and the limit screw sleeve (706) are used to rest against the guide vane (8) to limit and fix it.

2. The thermal spraying device with variable position for track-type movable guide vanes according to claim 1, characterized in that: The bottom sides of the track (2) are fixedly connected to the base (1) by multiple fasteners (3).

3. The thermal spraying device with variable position for track-type movable guide vanes according to claim 1, characterized in that: The base (1) has multiple threaded holes on both sides, and the bottom sides of the first connecting bracket (5) and the second connecting bracket (6) are connected to the threaded holes by bolts. The threaded holes are located at the end face spraying station and the surface spraying station, respectively. The sliding first connecting frame (5) and the second connecting frame (6) drive the guide vane support frame (7) to move to the corresponding station for spraying.

4. The thermal spraying device with variable position for track-type movable guide vanes according to claim 1, characterized in that: The bottom ends of the skateboard (701) are connected to the track (2) via sliders (703), and the arc-shaped pillow (702) is provided with threaded holes (709). The first connecting frame (5) and the second connecting frame (6) are connected to the threaded holes (709) by bolts.

5. The thermal spraying device with variable position for track-type movable guide vanes according to claim 1, characterized in that: The bottom of the limiting screw sleeve (706) and the limiting screw (707) are fixed to the slide plate (701) by double nuts, and the height of the limiting screw sleeve (706) and the limiting screw (707) can be adjusted by the double nuts; The outer side of the limiting screw sleeve (706) abuts against both sides of the guide vane (8) so that the guide vane (8) is in a vertical state and located at the end face spraying station; The end of the limiting screw (707) abuts against both sides of the guide vane (8) so that the guide vane (8) is in a horizontal state, and the surface is sprayed.

6. The thermal spraying device with variable position for track-type movable guide vanes according to claim 5, characterized in that: A support pad (708) is fixed on the top of the limiting screw (707). The support pad (708) is made of polytetrafluoroethylene and rests against the guide vane (8).

7. The thermal spraying device with variable position for track-type movable guide vanes according to claim 1, characterized in that: When the limiting screw sleeve (706) enters the slot (705), it is used to support the guide vane (8) in a vertical state for end face spraying. The limiting screw (707) slides to the end of the slide groove (704) to avoid space. When the limiting screw (707) enters the slot (705), it is used to support the guide vane (8) in a horizontal state for surface spraying. The limiting screw sleeve (706) slides to the end of the slide groove (704) to avoid space.

8. The thermal spraying device with variable position for track-type movable guide vanes according to claim 1, characterized in that: The slide (704) and the slot (705) are connected in a T-shape so that the limiting screw sleeve (706) and the limiting screw (707) can move alternately into the slot (705).

9. A method of using a track-type movable guide vane variable position thermal spraying device according to any one of claims 1 to 8, comprising the following steps: S1. Guide vanes (8) are staggered on each guide vane support frame (7) so that the part of the guide vane (8) to be sprayed is concentrated in the middle area of ​​the device. The support pad (708) at the top of the limiting screw (707) abuts against the guide vane (8) so that the guide vane (8) is in a horizontal state. S2. Spray the upper surface of the guide vane (8) from the vertical direction with the spray gun. After the upper surface is sprayed and dried, flip the guide vane (8) so that the lower surface is facing up, and repeat the spraying and drying process with the spray gun. S3. Remove the limiting screw (707), rotate the guide vane (8) to a vertical position, and move the limiting screw sleeve (706) into the slot (705) to lock the limiting on both sides of the guide vane (8); S4. Spray the upper part of both ends of the guide vane (8) from the horizontal direction with the spray gun, flip the guide vane (8) again so that the lower part of both ends of the guide vane (8) faces upward, and spray it with the spray gun and let it dry, thus completing the spraying of the guide vane (8).

10. The method of using a track-type movable guide vane variable position thermal spraying device according to claim 9, characterized in that: in Before end face spraying, push the second connecting frame (6) to align the end faces of the guide vanes (8) on the odd and even columns of the track (2), so that the spray gun has only two spraying tracks at both ends of the guide vanes (8).

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