A graphene-taikong coating spraying device for a water turbine

Abstract

The application provides a graphene ceramic gold coating spraying device for a water turbine, and relates to the technical field of spraying equipment. The device comprises a first mobile vehicle and a second mobile vehicle. The first mobile vehicle and the second mobile vehicle are respectively attached to the side walls of the same blade of a water turbine and can move along the edge path of the length direction of the blade. A spraying pipe is arranged between the first mobile vehicle and the second mobile vehicle and is located on the other side of the blade. The spraying pipe can automatically adjust its length during the movement along the length direction of the blade with the first mobile vehicle and the second mobile vehicle. The spraying pipe is provided with a plurality of spraying openings along its length direction. The device further comprises a first switch and a second switch. The device can complete the continuous spraying of the whole blade during one movement along the length direction of the blade, and does not need to repeatedly go back and forth or supplementally spray in sections, thereby improving the spraying efficiency, ensuring the stability of the spraying process, and improving the overall spraying quality of the blade and the consistency of the coating.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spraying equipment, in particular to a graphene ceramic gold coating spraying device for a water turbine. BACKGROUND

[0002] A water turbine impeller is usually composed of a lower ring, an upper crown and a plurality of blades, wherein the blades, as the key components directly acting with water flow, have the largest size and the most complex stress, and thus have the highest requirements for the wear resistance, adhesion and film forming quality of the surface coating. Compared with the connecting seat parts such as the lower ring and the upper crown, the spraying quality of the water turbine blade, especially the main body region of the blade, has a more significant influence on the overall performance of the machine, and therefore, in the spraying process of the graphene ceramic gold coating and other functional coatings, the blade becomes the part with the most difficult spraying and the highest quality control requirements.

[0003] In actual spraying operation, due to the large overall size of the water turbine blade and the adjacent structure shielding and narrow spraying space of the connecting region of the two ends of the blade with the lower ring or the upper crown, the whole usually needs to be sprayed multiple times by manual or mechanical hand along the predetermined path. The inventors found in actual construction that under the above spraying mode, the spray gun is easy to pass through the local region repeatedly, the already sprayed region is overlapped, and then the coating is locally accumulated, which is easy to cause phenomena such as sagging, uneven thickness, etc., affecting the overall forming quality and consistency of the blade surface coating. SUMMARY

[0004] The purpose of the present application is to provide a graphene ceramic gold coating spraying device for a water turbine, which can complete the continuous spraying of the whole blade in one movement along the length direction of the blade, without the need for repeated back and forth or segmented supplementary spraying, thereby improving the spraying efficiency, ensuring the stability of the spraying process, and improving the overall spraying quality and coating consistency of the blade.

[0005] The present application is realized by the following technical solutions:

[0006] A graphene ceramic gold coating spraying device for a water turbine, comprising:

[0007] A first mobile vehicle and a second mobile vehicle, which are respectively adsorbed and arranged on one side wall of the same blade of the water turbine, and can move along the edge path of the length direction of the blade;

[0008] A spray pipe, which is arranged across between the first mobile vehicle and the second mobile vehicle and located on the other side of the blade, and can automatically adjust its length in the process of moving along the length direction of the blade with the first mobile vehicle and the second mobile vehicle, and a plurality of spray openings are arranged along the length direction of the spray pipe;

[0009] A first switch element is arranged on the spray pipe and used to gradually open or close the spray nozzle during automatic length adjustment of the spray pipe, so that only the spray nozzle directly opposite the blade is in an open state.

[0010] A second switch element is arranged on the spray pipe and used to gradually close the spray nozzle from the side close to the first moving vehicle to the side close to the second moving vehicle during movement of the second moving vehicle along the long side of the blade after the first moving vehicle completes movement along the short side of the blade and stops.

[0011] Further, the spray pipe has a first state and a second state capable of switching with each other, wherein:

[0012] When the spray pipe is in the first state, the spray pipe is in an initial position, and the spray nozzle is arranged obliquely and faces the root connection area on one side of the length direction of the blade.

[0013] When the spray pipe is in the second state, the first moving vehicle and the second moving vehicle move to the other side of the length direction of the blade, and the spray pipe automatically rotates along the axial direction thereof to make the spray nozzle face the root connection area on the other side of the length direction of the blade.

[0014] Further, the first moving vehicle and the second moving vehicle are each provided with a first driving element connected with the spray pipe, used to drive the spray pipe to move in the same direction or in the opposite direction relative to the moving direction of the first moving vehicle and the second moving vehicle, and to fix the position of the spray pipe after adjustment is completed.

[0015] Further, the first driving element comprises a rodless cylinder, a fixing seat is arranged rotatably on the output seat of the rodless cylinder, the rotation axis of the fixing seat is perpendicular to the moving direction of the first moving vehicle and the second moving vehicle, and the spray pipe is arranged on the fixing seat.

[0016] Further, a rotating motor is arranged between the fixing seat and the output seat of the rodless cylinder, the rotation axis of the rotating motor constitutes the rotation axis of the fixing seat, so as to drive the spray pipe to bend between the first moving vehicle and the second moving vehicle.

[0017] Further, the spray pipe slides through the fixing seat of the first moving vehicle, the first switch element comprises a first shielding pipe, the first shielding pipe is sealingly sleeved on the spray pipe, the first shielding pipe is fixedly arranged on the fixing seat of the first moving vehicle away from the second moving vehicle, and the spray nozzle extends into the first shielding pipe along the length direction of the spray pipe.

[0018] Further, the second switch part comprises a second shielding pipe and a second driving component, the second shielding pipe is rotatably sleeved on the outer periphery of the spray pipe and is arranged at the fixed seat near the first moving trolley, a long strip opening is formed on the second shielding pipe, and the long strip opening comprises a first opening surface and a second opening surface;

[0019] The first opening surface is arranged in the axial direction of the spray pipe, and the second opening surface is arranged in an arc shape so that the long strip opening gradually expands from the side of the first moving trolley to the side near the second moving trolley.

[0020] The second driving component is connected with the second shielding pipe and is used for driving the second shielding pipe to rotate around the axial direction of the spray pipe.

[0021] Further, the second driving component comprises a first gear, a second gear and a driving motor, the first gear is fixedly sleeved on the second shielding pipe, the second gear is engaged with the first gear, the driving motor is arranged on the fixed seat of the first moving trolley, and the second gear is coaxially fixedly arranged on the rotating shaft of the driving motor.

[0022] Further, the spray pipe is rotatably arranged on the fixed seat of the second moving trolley, an end gear is coaxially fixedly arranged at the end of the spray pipe, a bracket is arranged at one end of the cylinder body of the rodless cylinder, and an external gear rack is arranged on the bracket, so that the end gear is gradually engaged with the external gear rack and drives the spray pipe to rotate in the axial direction when the spray pipe is driven by the rodless cylinder to move to the end near the bracket, so that the spray pipe is in the second state.

[0023] The second shielding pipe is further provided with a communication strip opening in the length direction, the communication strip opening is arranged staggered with the long strip opening, and all the spray openings shielded by the second shielding pipe can be opened at the same time when the communication strip opening faces the spray opening.

[0024] Further, the frame of the first moving trolley and the frame of the second moving trolley are both provided with a limiting frame, a movable frame is slidably arranged on the limiting frame, a limiting wheel is rotatably arranged on the movable frame, the limiting wheel is used for rolling and limiting the edge position of the blade, the limiting wheel and the spray opening of the spray pipe are arranged staggered with each other along the moving path of the blade, and a telescopic cylinder is arranged on the limiting frame, the telescopic cylinder is used for driving the movable frame to move away from the edge of the blade.

[0025] And / or, the spray pipe is provided with a limiting ring, the limiting ring is arranged close to the fixed seat position of the first mobile car and located away from the second mobile car side, a reset spring is arranged between the limiting ring and the fixed seat of the first mobile car, one end of the reset spring is fixedly connected with the limiting ring, and the other end is fixedly connected with the first shielding pipe.

[0026] The technical scheme of the present application has at least the following advantages and beneficial effects:

[0027] 1. By respectively adsorbing and synchronously moving along the edge path of the length direction of the water turbine blade of the first mobile car and the second mobile car, the spray pipe is arranged between the two and on the other side of the blade, which can automatically adjust its length during the movement, so that the spray pipe always covers the current corresponding width range of the blade. Thus, during one movement along the length direction of the blade, continuous spraying operation of the whole blade can be completed, without repeated back and forth or segmented supplementary spraying, which not only improves the spraying efficiency, but also makes the spraying path more stable, and the spray opening always faces the blade surface, which is beneficial to form a smooth and continuous graphene ceramic gold coating, thereby effectively ensuring the overall spraying quality and coating consistency of the blade.

[0028] 2. During the spraying process of the connection area between the two ends of the blade and the lower ring or the upper crown, in view of the special connection shape of the blade shape and the lower ring or the upper crown, by stopping the first mobile car and continuing to move the second mobile car along the length direction of the blade, the spray pipe swings around the side of the first mobile car, realizing swing spraying of the connection area, which can fully cover the area with complex structure and limited space. At the same time, since the first mobile car and the second mobile car are adsorbed and arranged on one side wall of the blade, and the spray pipe is located on the other side of the blade, the spraying operation is always carried out on the other side of the blade, which is convenient for continuous and complete spraying of the surface on the other side of the blade, and avoids the generation of missed spraying area due to equipment shielding or limited operation.

[0029] By gradually closing the spray opening with the second switch during the swing of the spray pipe, the spray openings on the side close to the swing center are sequentially closed, which avoids continuous spraying of the same area by the spray pipe during the swing, effectively prevents the generation of flow hanging and uneven thickness, and further improves the uniformity of the overall spraying of the blade and the film forming quality while ensuring complete coverage of the connection area. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 The present application provides a whole structure schematic of a water turbine graphene ceramic gold coating spraying device Figure One ;

[0031] Figure 2 The present application provides a whole structure schematic of a water turbine graphene ceramic gold coating spraying device Figure Two ;

[0032] Figure 3 The structure diagram of the first shielding pipe and the second shielding pipe is shown in the present application;

[0033] Figure 4 The structure diagram of the second driving component, the long strip opening and the communication strip port is shown in the present application;

[0034] Figure 5 The structure diagram of the first switch component is shown in the present application;

[0035] Figure 6 The structure diagram of the first driving component is shown in the present application;

[0036] Figure 7 The structure diagram of the water turbine impeller is shown in the present application;

[0037] Figure 8 The moving state diagram of the first moving vehicle and the second moving vehicle is shown in the present application;

[0038] Figure 9 The structure diagram of the spraying pipe driven to the top by the rodless cylinder is shown in the present application;

[0039] Figure 10 The structure diagram of the spraying pipe bent by the rotating motor is shown in the present application;

[0040] The structure diagram of the spraying pipe driven to the top by the rodless cylinder is shown in the present application; DETAILED DESCRIPTION

[0041] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0043] The following refers to Figures 1-10 As shown in the drawings, further illustrated in conjunction with specific embodiments, the present embodiment provides a graphene ceramic coating spraying device for a water turbine, which includes a first mobile vehicle 100 and a second mobile vehicle 200. The first mobile vehicle 100 and the second mobile vehicle 200 can have the same vehicle structure in structure. In order to distinguish the respective motion states and functions, the first mobile vehicle 100 and the second mobile vehicle 200 are described as two mobile vehicles in the present embodiment. The first mobile vehicle 100 and the second mobile vehicle 200 can be provided as track 210 type belt surface vehicles. The track 210 belt surface can be provided with a negative pressure device, such as a negative pressure hole or a negative pressure cavity. The adsorption force is generated by an external negative pressure source, so that the first mobile vehicle 100 and the second mobile vehicle 200 can be stably adsorbed on the surface of the blade 820 and move along the blade 820.

[0044] It should be understood that the first mobile vehicle 100 and the second mobile vehicle 200 are only relatively distinguished for the purpose of describing the technical solutions of the present application. The positional relationship is a relative description, and does not constitute a limitation on the specific installation position or the motion direction. In the actual application, the first mobile vehicle 100 and the second mobile vehicle 200 can be alternatively arranged, and the corresponding functions and effects can also be realized by the other party without departing from the overall concept of the technical solutions of the present application.

[0045] In different embodiments, the first mobile vehicle 100 and the second mobile vehicle 200 can be provided with sensors for sensing the edge position of the blade 820. The sensors can be contact sensors, photoelectric sensors, laser ranging sensors, or visual recognition sensors, etc., for obtaining the distance, attitude, or offset information of the mobile vehicle relative to the edge of the blade 820 in real time. Based on the signals fed back by the sensors, the control system can automatically adjust the traveling direction, traveling speed, and adsorption position of the first mobile vehicle 100 and the second mobile vehicle 200, so that they can be stably attached to the edge of the blade 820 and continuously move along the edge path of the blade 820, thereby avoiding problems such as deviation and jamming caused by size changes of the blade 820, irregular edge curves, or installation errors, and improving the reliability and adaptability of the entire spraying device for automatic movement along the edge of the blade 820.

[0046] In other embodiments, the track 210 can also be provided in a magnetic attraction structure, for example, a magnetic attraction strip is attached to the edge of the blade 820 in advance, and the track surface of the track 210 is attracted to the magnetic attraction strip, thereby ensuring the stable movement of the first mobile vehicle 100 and the second mobile vehicle 200 on the blade 820. The above-mentioned adsorption mode can be selected or combined according to the material of the blade 820, the construction environment, and other factors. The first mobile vehicle 100 and the second mobile vehicle 200 are respectively adsorbed and arranged on one side wall of the same blade 820 of the water turbine, and can stably move along the edge path in the length direction of the blade 820.

[0047] The spraying pipe 300 is arranged between the first mobile vehicle 100 and the second mobile vehicle 200, and is arranged as a whole on the other side of the blade 820, so that the spraying pipe 300 is always located on the opposite side of the surface of the blade 820 to be sprayed during the spraying operation, thereby avoiding the influence of the blocking of the first mobile vehicle 100 and the second mobile vehicle 200 on the spraying process, and facilitating the maintenance of a stable and uniform spraying distance between the spraying port 310 and the surface of the blade 820. Through the above-mentioned cross arrangement, the spraying pipe 300 can move synchronously with the two mobile vehicles, forming a continuous and parallel spraying track along the length direction of the blade 820, thereby providing a structural basis for one-time continuous spraying of the entire blade 820.

[0048] During the synchronous movement of the spraying pipe 300 along the length direction of the blade 820 with the first mobile vehicle 100 and the second mobile vehicle 200, the spraying pipe 300 can automatically adjust its length according to the relative distance between the two mobile vehicles, thereby adapting to the width changes or local contour changes of the blade 820 in the length direction.

[0049] Specifically, when the width of the blade 820 increases, the spray pipe 300 is correspondingly elongated to ensure that the spray port 310 always covers the effective spraying area of the blade 820; when the width of the blade 820 decreases, the spray pipe 300 is correspondingly shortened to avoid the spray port 310 exceeding the edge of the blade 820, causing waste or pollution of the paint. Through the adaptive adjustment of the length of the spray pipe 300, the spraying process has stronger universality and adaptability for different specifications and sizes of the turbine blade 820.

[0050] The spray pipe 300 is provided with a plurality of spray ports 310 along the length direction thereof. The spray port 310 can adopt a long strip micro-hole structure extending along the length direction of the spray pipe 300, so that the paint forms a continuous and uniform spraying belt in the length direction; or it can also be composed of a plurality of independent spray holes arranged at intervals along the length direction of the spray pipe 300, and the covering spraying of the surface of the blade 820 is realized through the combination of a plurality of spray holes.

[0051] The above different forms of the spray port 310 can be selected or replaced according to the characteristics of the coating material, the spraying thickness requirement and the surface morphology of the blade 820, so as to improve the spraying uniformity and film forming quality. The spray pipe 300 is used to be connected with the spraying box, and the paint is sucked by a negative pressure pump and then sprayed out through the spray port 310, so as to form stable spraying. This feeding mode can be realized by using existing mature technology.

[0052] The first switch member 400 is arranged on the spray pipe 300 and is used to correspondingly control the spray port 310 during the automatic length adjustment of the spray pipe 300, so that only the spray port 310 on the spray pipe 300 which directly faces the surface of the blade 820 is in an open state, and the spray port 310 which is located outside the effective spraying range of the blade 820 is in a closed state. In this way, the spray pipe 300 can always maintain "on-demand spraying" during the stretching and contracting process, avoiding ineffective spraying in the non-spraying area caused by the length change of the spray pipe 300.

[0053] In different embodiments, the first switch member 400 can divide the spray port 310 into a plurality of independent control areas along the length direction, and segmentally control the spray port 310 through electromagnetic switches, pneumatic valves or mechanical linkage structures, so that the opening or closing of the spray port 310 matches the length change process of the spray pipe 300, thereby further improving the precision of the spraying process and the utilization rate of the paint.

[0054] The second switch 500 is also arranged on the spraying pipe 300, which is mainly used for spraying control of the spraying pipe 300 in the swing spraying working condition. When the first moving trolley 100 completes the movement along the short side path of the blade 820 and stops, the second moving trolley 200 continues to move along the long side path of the blade 820, at this time, the spraying pipe 300 swings around the side close to the first moving trolley 100. Through the action of the second switch 500, the spraying port 310 is gradually closed from the side close to the first moving trolley 100 to the side close to the second moving trolley 200, so that the spraying area of the spraying pipe 300 gradually moves away from the side of the swing center in the swing process.

[0055] Through the above control mode, the same area close to the swing center can be effectively avoided from being continuously sprayed in the swing process of the spraying pipe 300, and local accumulation of the coating is prevented. In different embodiments, the second switch 500 can be realized in a mode that multiple spraying ports 310 cooperate with electromagnetic switches to be closed in turn, or can be realized through mechanical shielding structures such as rotating shielding members and sliding shielding members, so as to ensure the stability of the spraying process and the uniformity of the coating thickness.

[0056] Optionally, in order to spray the root connection positions at both ends of the blade 820 and realize complete spraying of the blade 820 in one operation, the spraying pipe 300 is arranged to have a first state and a second state that can be switched to each other. Specifically, in the case that the spraying pipe 300 is in the first state, the spraying pipe 300 is in the initial installation position, the spraying port 310 is inclined to the root connection area of the length direction side of the blade 820, so that the spraying direction of the spraying can cover the connection transition area between the blade 820 and the upper crown 810 (as shown in Figure 7

[0057] It is worth noting that the moving direction of the first moving trolley 100 and the second moving trolley 200 is generally from the connection transition area between the blade 820 and the upper crown 810 to the connection area between the blade 820 and the lower ring 800.

[0058] When the first moving trolley 100 and the second moving trolley 200 move to the other side along the length direction of the blade 820, the spraying pipe 300 is automatically switched to the second state, the spraying pipe 300 is automatically rotated along the axial direction, so that the spraying port 310 is directed to the root connection area of the other side of the length direction of the blade 820 (the connection area between the blade 820 and the lower ring 800), thereby realizing the sequential spraying of the root connection areas at both ends of the blade 820 without changing the spraying path, and avoiding additional independent spraying procedures.

[0059] ​As an optional embodiment, the first mobile vehicle 100 and the second mobile vehicle 200 are each provided with a first driving member 600, and the first driving member 600 is connected with the spraying pipe 300, so as to drive the spraying pipe 300 to move relatively along the moving direction of the first mobile vehicle 100 and the second mobile vehicle 200 in the same direction or in the opposite direction when the first mobile vehicle 100 and the second mobile vehicle 200 are limited by the occupied space of the mobile vehicle body structure to move to the both ends of the vane 820 along the edge path of the vane 820, and to limit and fix the spraying pipe 300 after the position adjustment is completed.

[0060] Through the above setting, when the first mobile vehicle 100 and the second mobile vehicle 200 move to the both ends of the vane 820 along the length direction, and the space near the lower ring 800 or the upper crown 810 is limited, even if the mobile vehicle body cannot continue to approach the connecting position of the root of the vane 820, the first driving member 600 can drive the spraying pipe 300 to move relatively to the mobile vehicle to compensate, so that the spraying port 310 of the spraying pipe 300 is further close to or aligned with the end of the vane 820 and the connecting area thereof, thereby avoiding the problems of insufficient spraying pipe 300, spraying blind area or incomplete end coverage caused by the occupied space of the mobile vehicle. Therefore, under the premise of not changing the moving path of the mobile vehicle, the effective spraying of the both ends of the vane 820 along the length direction is realized, and the continuity and integrity of the spraying of the whole vane 820 and the connecting area of the root are ensured.

[0061] Specifically, the first driving member 600 includes a rodless cylinder 610, and a fixed seat 620 is rotationally arranged on an output seat 611 of the rodless cylinder 610, and the rotation axis of the fixed seat 620 is perpendicular to the moving direction of the first mobile vehicle 100 and the second mobile vehicle 200, and one end of the spraying pipe 300 is rotationally connected with the fixed seat 620. Through the linear driving of the rodless cylinder 610, the axial position adjustment of the spraying pipe 300 between the first mobile vehicle 100 and the second mobile vehicle 200 can be realized, and through the rotational connection mode of the fixed seat 620, the necessary rotational freedom of the spraying pipe 300 is provided.

[0062] Further, a rotating motor 630 is installed between the fixed seat 620 and the output seat 611 of the rodless cylinder 610, the rotating axis of the rotating motor 630 coincides with the rotating axis of the fixed seat 620, and the rotating motor 630 is used to drive the fixed seat 620 to rotate relative to the output seat 611 of the rodless cylinder 610, so as to drive the spraying pipe 300 to produce controllable rotation or bending adjustment between the first mobile vehicle 100 and the second mobile vehicle 200.

[0063] Through the above setting, the spray pipe 300 can actively adjust the spray posture and spatial direction according to the curved surface changes of the blade 820 along the length direction and the width direction, and the local space structure characteristics at the connection area of the blade 820 and the lower ring 800 or the upper crown 810 during the spraying process, instead of relying on the passive deformation of the spray pipe 300.

[0064] It should be noted that in order to cooperate with the above rotation and bending adjustment actions, the spray pipe 300 should be made of elastic pipe and have a certain flexibility and the ability to restore the original shape after the external force is removed, such as metal pipe, corrugated pipe or reinforced composite material pipe with elastic recovery ability. Through the combination of the elastic deformation ability of the material itself and the active driving of the rotating motor 630, the spray pipe 300 can still maintain the stability of the spraying channel while realizing multi-station and multi-posture spraying, avoid the change of channel cross section or unstable spraying caused by excessive bending, and ensure the repeatability and consistency of the spray posture in different spraying cycles.

[0065] Referring to Figure 1 and Figure 2 , the spray pipe 300 slides through the fixed seat 620 of the first moving trolley 100, the first switch member 400 includes a first shielding pipe 410, the first shielding pipe 410 is sealingly sleeved on the spray pipe 300 and is fixedly arranged on the side of the fixed seat 620 of the first moving trolley 100 away from the second moving trolley 200. The spray port 310 extends along the length direction of the spray pipe 300 and extends to the inside of the first shielding pipe 410. By moving the spray pipe 300 relative to the first shielding pipe 410, the gradual opening or closing of the spray port 310 can be realized, which is simple and reliable in structure.

[0066] Referring to Figure 3 and Figure 5 , in the specific installation of the first shielding pipe 410, the first shielding pipe 410 is sleeved and rotated on the fixed seat 620 of the first moving trolley 100 to increase the connection stability of the first shielding pipe 410, ensure the continuity of the blocking of the spray port 310, and enable the spray pipe 300 to normally rotate in the axial direction.

[0067] Referring to Figure 3 and Figure 4As shown, the second switch part 500 comprises a second shielding pipe 510 and a second driving component 520. The second shielding pipe 510 is made of a metal or non-metal material with certain flexibility, so as to adapt to the deformation of the spray pipe 300 during bending, axial rotation or swinging, while ensuring that the shielding pipe can maintain stable shielding effect after deformation. The second shielding pipe 510 is rotatably sleeved on the outer periphery of the spray pipe 300 and is arranged at the fixed seat 620 close to the first moving vehicle 100, so as to realize synchronous adjustment of the shielding opening when the spray pipe 300 moves along the length direction of the blade 820 and bends with the moving vehicle.

[0068] The second shielding pipe 510 is provided with a long opening 511, which comprises a first opening surface 5111 and a second opening surface 5112. The first opening surface 5111 extends along the axial direction of the spray pipe 300, and the second opening surface 5112 is arranged in an arc shape, so that the long opening 511 gradually expands from the side close to the first moving vehicle 100 to the side close to the second moving vehicle 200.

[0069] It should be noted that the curvature of the second opening surface 5112 can be designed according to the specific spatial form of the connection region between the blade 820 and the lower ring 800 or the upper crown 810, for example, using a gradually changing curve, a combination of linear and curved lines, or a segmented curve, so as to realize gradual closing of the spray opening 310 during rotation of the second shielding pipe 510, avoid overspraying on the side close to the swinging center, and ensure uniform spraying coverage at the end region. The specific selection is based on the connection region between the blade 820 and the lower ring 800.

[0070] In the embodiment as shown in the figure, Figure 3 In other embodiments, the length of the second shielding pipe 510 can be adjusted according to the specific requirements of the spraying range and the width of the blade 820 to meet the spraying requirements of blades 820 of different sizes. The second driving component 520 is connected with the second shielding pipe 510 and is used to drive the second shielding pipe 510 to rotate around the axial direction of the spray pipe 300, so as to accurately open and close the long opening 511.

[0071] In a specific implementation, the second driving component 520 comprises a first gear 521, a second gear 522 and a driving motor 523. The first gear 521 is fixedly sleeved on the second shielding pipe 510, the second gear 522 is engaged with the first gear 521, the driving motor 523 is fixedly installed outside the protective cover 524, and the second gear 522 is coaxially fixed on the rotating shaft of the driving motor 523. In order to improve reliability and protection performance, the first gear 521 and the second gear 522 can be covered in the protective cover 524, and the gears can be made of wear-resistant materials to ensure smooth rotation of the second shielding pipe 510 during long-term use.

[0072] In addition, in an optional embodiment, the second driving component 520 can also adopt a synchronous belt, a chain wheel or a screw drive structure instead of a gear meshing mode to achieve the same rotation control effect, while the transmission ratio and the rotation angle can be adjusted according to the spraying precision requirements to realize the flexibility of spraying the end portions and the connecting regions of the blades 820.

[0073] Referring to Figure 2 To realize the automatic switching of the spray pipe 300 to the second state, the other end of the spray pipe 300 is rotationally arranged on the fixed seat 620 of the second moving vehicle 200, and the end gear 320 is coaxially and fixedly arranged at the end portion of the spray pipe 300. One end of the rodless cylinder 610 is provided with a bracket 640, the bracket 640 is L-shaped, and an external gear rack 650 is fixedly installed on the bracket 640. When the rodless cylinder 610 drives the spray pipe 300 to move along the axial direction and approaches one end of the bracket 640, the end gear 320 gradually meshes with the external gear rack 650, and drives the spray pipe 300 to rotate along the axial direction, so as to realize the switching of the spray pipe 300 from the first state to the second state. In this process, through the gradual meshing of the end gear 320 and the external gear rack 650, the rotation action of the spray pipe 300 can realize smooth and controllable angle adjustment, avoiding the sudden change or uneven spraying of the spray port 310 in the switching process.

[0074] As to the installation mode of the external gear rack 650, since the fixed seat 620 will rotate under the action of the rotating motor 630 in the working process, the external gear rack 650 is fixedly installed on the bracket 640 through a hard rubber block 651. The hard rubber block 651 has a certain elastic deformation capacity, when the fixed seat 620 rotates and drives the end gear 320 to move to the position close to the external gear rack 650, the external gear rack 650 can be deflected adaptively under the elastic action of the hard rubber block 651 after being abutted by the fixed seat 620, so as to realize the smooth meshing between the external gear rack 650 and the end gear 320, and further drive the spray pipe 300 to rotate along the axial direction.

[0075] In other optional embodiments, a motor can also be used to directly drive the spray pipe 300 for rotation control. However, compared with the above-mentioned rotation mode realized by the self-adaptive meshing of the gear and the gear rack, this mode usually needs to be matched with an additional control unit or a sensor to realize synchronous control, which is easy to increase the system cost and the structural complexity.

[0076] Further, the second shielding pipe 510 is also provided with a communication slot along the length direction, and the communication slot is arranged staggered with the long slot 511. When the communication slot is opposite to the spray port 310, multiple spray ports 310 shielded by the second shielding pipe 510 can be opened at the same time, so as to expand the spraying coverage. The communication slot is arranged to, after the spray pipe 300 moves to the root area of the blade 820, enable the spray pipe 300 to open multiple spray ports 310 at the end during the rotation by continuously driving the second shielding pipe 510 to rotate, so as to realize the overall spraying of the root and the connecting area of the blade 820.

[0077] It should be noted that the design is mainly aimed at the water turbine impeller blade 820 as shown in the drawings, and is especially suitable for the curved area connecting the root of the blade 820 with the lower ring 800 or the upper crown 810. Of course, it is also suitable for other relatively flat and regular structure blades 820. By arranging the second shielding pipe 510 and the rotation control structure thereof, the spray pipe 300 can fully cover the root area of the blade 820, realize the uniformity of spraying, avoid the local accumulation or sagging of the coating, and thus ensure the thickness consistency and overall film forming quality of the coating. Figure 7 Meanwhile, the design allows the length, position and opening angle of the communication slot to be adjusted according to the width change of the blade 820, the space limitation of the connecting part of the root with the lower ring 800 or the upper crown 810, and the installation error of the blade 820, so as to adapt to different blade 820 specifications and spraying working conditions, and improve the applicability and flexibility of the device.

[0078] Referring to

[0079] and Figure 1 , in order to ensure the stable movement of the first mobile vehicle 100 and the second mobile vehicle 200 along the edge path of the blade 820, a limiting frame 700 is arranged on the frame of the first mobile vehicle 100 and the second mobile vehicle 200, multiple movable frames 710 are arranged on the limiting frame 700 in a sliding manner, and a limiting wheel 720 is arranged on the movable frame 710 in a rotating manner. The limiting wheel 720 is used for rolling contact and guiding along the edge of the blade 820, so as to constrain the deviation of the first mobile vehicle 100 and the second mobile vehicle 200 along the predetermined path. Figure 6 The limiting wheel 720 and the spray port 310 of the spray pipe 300 are arranged staggered along the movement path of the blade 820, so as to ensure that the limiting structure does not interfere with the spraying operation. A telescopic air cylinder 730 is arranged on the limiting frame 700, and the telescopic air cylinder 730 is used to drive the movable frame 710 to move away from the edge of the blade 820, so that when the spraying reaches the edge of the blade 820 or the end of the blade 820, the limiting wheel 720 can be automatically retracted, avoiding the shielding or dead angle of spraying on the whole surface of the blade 820, and ensuring the continuity and integrity of the spraying.

[0080]

[0081] ​In different embodiments, the limiting frame 700 can be designed as a telescopic frame structure, or a multi-stage adjusting mechanism can be provided to adapt to changes in the thickness of the blade 820, the bending amplitude of the blade 820, or the shape of the end of the blade 820, so as to ensure that the limiting wheel 720 can always stably fit the edge of the blade 820 during the entire spraying process. At the same time, the limiting wheel 720 can use replaceable wheel surface materials such as rubber or high-friction coefficient plastics to enhance the grip with the edge of the blade 820 and reduce damage to the surface of the blade 820. The limiting frame 700 and the movable frame 710 can also be made of lightweight aluminum alloys or high-strength composite materials to reduce the overall weight of the device and improve the motion flexibility and response speed of the mobile vehicle.

[0082] As an optional embodiment, a limiting ring 330 is provided on the spraying pipe 300, which is arranged close to the fixed seat 620 of the first mobile vehicle 100 and located away from one side of the second mobile vehicle 200. A return spring 340 is arranged between the limiting ring 330 and the fixed seat 620 of the first mobile vehicle 100, one end of the return spring 340 is fixedly connected to the limiting ring 330, and the other end is fixed to the first shielding pipe 410, providing a mutual approaching tension between the first mobile vehicle 100 and the second mobile vehicle 200, so that they can be more closely fitted to the edge of the blade 820 during movement, thereby ensuring the stability of the relative position relationship between the spraying pipe 300 and the blade 820.

[0083] The first shielding pipe 410 is provided with a limiting slot 411 along the length direction, and a limiting block is fixedly arranged on the limiting ring 330, the limiting block is fixedly connected with the spraying pipe 300, and the limiting block is slidingly connected in the limiting slot 411, so as to realize accurate guidance of the spraying pipe 300. In addition, under the action of the torsion of the return spring 340, the spraying pipe 300 can also be automatically reset to the first state, i.e. the initial state, so as to ensure that the spraying pipe 300 always maintains a reasonable position and spraying angle during continuous spraying and state switching, thereby improving the spraying uniformity and process reliability.

[0084] Optionally, to further improve adaptability and precision, a fine adjustment mechanism or a buffer device can be added to the structure of the return spring 340 and the limiting ring 330 to adapt to small deviations or vibrations of the edge of the blade 820, so as to ensure that the spraying pipe 300 can still maintain stability during high-speed movement or complex curved surface spraying, thereby preventing spraying deviation, uneven thickness of the sprayed layer, or local spraying omission. Through the above multiple structures and design combinations, the present embodiment can consider the edge guiding of the blade 820, the spraying precision, and the stability of the device, and realize high-quality, continuous, and uniform spraying of the turbine blade 820.

[0085] The above merely describes the preferred embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A water turbine graphene-taokon coating spraying device, characterized in that, The utility model relates to a kind of water turbine blade cleaning device, including: First mobile vehicle (100) and second mobile vehicle (200), the first mobile vehicle (100) and the second mobile vehicle (200) are respectively adsorbed and arranged on the side wall of the same blade (820) of water turbine, and can move along the edge path of the length direction of blade (820); Spray pipe (300), the spray pipe (300) is elastic pipe, the spray pipe (300) is straddled between the first mobile vehicle (100) and the second mobile vehicle (200), and is located on the other side of blade (820), the spray pipe (300) can automatically adjust its length in the process of moving along the length direction of blade (820) with the first mobile vehicle (100) and the second mobile vehicle (200), and the spray pipe (300) is provided with multiple spray openings (310) along its length direction; First switching part (400), the first switching part (400) is arranged on the spray pipe (300), for gradually opening or closing the spray opening (310) in the process of automatically adjusting the length of the spray pipe (300), so that only the spray opening (310) of the spray pipe (300) is in the opening state, which is directly opposite blade (820); Second switching part (500), the second switching part (500) is arranged on the spray pipe (300), for gradually closing the spray opening (310) from the side close to the first mobile vehicle (100) to the side close to the second mobile vehicle (200) in the process of the second mobile vehicle (200) continuing to move along the long edge path of blade (820) after the first mobile vehicle (100) completes the movement along the short edge path of blade (820) and stops; The second switching part (500) includes second shielding pipe (510) and second driving component (520), the second shielding pipe (510) is rotationally sleeved on the outer periphery of the spray pipe (300), the second shielding pipe (510) is provided with long strip opening (511), and the long strip opening (511) includes first opening face (5111) and second opening face (5112); Wherein, the first opening face (5111) is arranged along the axial direction of the spray pipe (300), and the second opening face (5112) is arranged in arc shape, so that the long strip opening (511) gradually expands from the side of the first mobile vehicle (100) to the side close to the second mobile vehicle (200); The second driving component (520) is connected with the second shielding pipe (510), for driving the second shielding pipe (510) to rotate around the axial direction of the spray pipe (300).

2. The graphene-taught coating spraying device of claim 1, wherein, The spray pipe (300) has first state and second state that can be switched with each other, wherein: In the case that the spray pipe (300) is in first state, the spray pipe (300) is in initial position, and the spray opening (310) is arranged in inclination and towards the root connecting area of one side of the length direction of blade (820); In the case that the spray pipe (300) is in second state, the spray pipe (300) is in the position of moving along the length direction of blade (820) with the first mobile vehicle (100) and the second mobile vehicle (200), and the spray opening (310) is arranged in parallel with the length direction of blade (820). When the spray pipe (300) is in the second state, the first mobile vehicle (100) and the second mobile vehicle (200) move to the other side of the length direction of the blade (820), and the spray pipe (300) automatically rotates along the axial direction thereof to make the spray opening (310) face the root connecting area on the other side of the length direction of the blade (820).

3. The water turbine graphene-taokon coating spraying device according to claim 2, characterized in that, The first mobile vehicle (100) and the second mobile vehicle (200) are provided with a first driving member (600) on the frame thereof, the first driving member (600) is connected with the spray pipe (300), and is used for driving the spray pipe (300) to move in the same direction or in the opposite direction along the running direction of the first mobile vehicle (100) and the second mobile vehicle (200), and fixing the position of the spray pipe (300) after adjustment.

4. The water turbine graphene-taokon coating spraying device according to claim 3, characterized in that, The first driving member (600) comprises a rodless cylinder (610), a fixed seat (620) is rotationally arranged on the output seat (611) of the rodless cylinder (610), the rotation axis of the fixed seat (620) is perpendicular to the running direction of the first mobile vehicle (100) and the second mobile vehicle (200), and the spray pipe (300) is arranged on the fixed seat (620).

5. The water turbine graphene-taokine coating spraying device according to claim 4, characterized in that, A rotating motor (630) is arranged between the fixed seat (620) and the output seat (611) of the rodless cylinder (610), the rotation axis of the rotating motor (630) constitutes the rotation axis of the fixed seat (620), so as to drive the spray pipe (300) to bend between the first mobile vehicle (100) and the second mobile vehicle (200).

6. The water turbine graphene-taokine coating spraying device according to claim 4 or 5, characterized in that, The spray pipe (300) slides through the fixed seat (620) of the first mobile vehicle (100), the first shielding pipe (410) is sealingly arranged on the spray pipe (300), the first shielding pipe (410) is fixedly arranged on the side of the fixed seat (620) of the first mobile vehicle (100) away from the second mobile vehicle (200), and the spray opening (310) extends into the first shielding pipe (410) along the length direction of the spray pipe (300).

7. The water turbine graphene-taokon coating spraying device according to claim 6, characterized in that, The second shielding pipe (510) is arranged on the fixed seat (620) close to the first mobile vehicle (100).

8. The water turbine graphene-taokon coating spraying device according to claim 7, characterized in that, The second driving member (520) comprises a first gear (521), a second gear (522) and a driving motor (523), the first gear (521) is sealingly arranged on the second shielding pipe (510), the second gear (522) is in mesh with the first gear (521), the driving motor (523) is arranged on the fixed seat (620) of the first mobile vehicle (100), and the second gear (522) is coaxially and fixedly arranged on the rotating shaft of the driving motor (523).

9. The graphene-taught coating spraying device of claim 7, wherein, The spray pipe (300) is rotationally arranged on the fixed seat (620) of the second moving vehicle (200), and the end of the spray pipe (300) is coaxially fixedly provided with an end gear (320). One end of the cylinder body of the rodless cylinder (610) is provided with a support (640), and the support (640) is provided with an external gear rack (650). When the rodless cylinder (610) drives the spray pipe (300) to move to the end close to the support (640), the end gear (320) gradually meshes with the external gear rack (650) and drives the spray pipe (300) to rotate in the axial direction, so that the spray pipe (300) is in the second state. The second shielding pipe (510) is also provided with a communication slot (512) along the length direction, and the communication slot (512) is arranged staggered with the long slot (511). When the communication slot (512) faces the spray port (310), all the spray ports (310) shielded by the second shielding pipe (510) can be opened at the same time.

10. The graphene-taught coating spraying device of claim 6, wherein, The first moving vehicle (100) and the second moving vehicle (200) are both provided with a limiting frame (700), and the limiting frame (700) is slidably provided with a movable frame (710). The movable frame (710) is rotationally provided with a limiting wheel (720), which is used to roll and limit the edge position of the blade (820). The limiting wheel (720) and the spray port (310) of the spray pipe (300) are arranged staggered along the moving path of the blade (820). The limiting frame (700) is provided with a telescopic cylinder (730), which is used to drive the movable frame (710) to move away from the edge of the blade (820). And / or, the spray pipe (300) is provided with a limiting ring (330), which is arranged close to the fixed seat (620) of the first moving vehicle (100) and away from the second moving vehicle (200). The limiting ring (330) and the fixed seat (620) of the first moving vehicle (100) are provided with a return spring (340), one end of which is fixedly connected with the limiting ring (330), and the other end is fixedly connected with the first shielding pipe (410).

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