A spraying device for improving the spraying uniformity of turbine blades

Abstract

The present invention discloses a spraying device for improving the uniformity of spraying of turbine blades, which belongs to the technical field of turbine blade processing, and comprises: a frame, wherein blades are placed in the frame, and the ends and surfaces of the blades are respectively connected with blade roots and tie rod bosses; a spraying unit, which is installed on the frame; an intermittent lifting unit, which is slidably connected in the frame, and the ends are connected with a positioning unit; a rotating unit, which is connected to the surface of the intermittent lifting unit; a steering unit, which rotates on the positioning unit, and the ends are connected with a shielding frame; an opening and closing unit, which is opened on the positioning unit and connected to the shielding frame. With the cooperation of the intermittent lifting unit and the rotating unit, the blades will rotate forward or reversely when descending or ascending, thereby improving the uniformity of the spraying of the blades by the spraying unit. By arranging the steering unit and the opening and closing unit to shield the tie rod bosses on the surface of the blades, it is convenient for the spraying unit to spray the wear-resistant coating on the surface of the tie rod bosses, thereby improving the efficiency of the turbine blade spraying.

Description

Technical Field

[0001] The invention relates to the technical field of steam turbine blade processing, and in particular to a spraying device for improving the spraying uniformity of steam turbine blades. Background Art

[0002] A Chinese patent (publication number: CN118357092A) discloses a turbine blade spraying tool, comprising: a base frame; a first positioning body arranged on the base frame for placing and positioning the blade root; a second positioning body arranged on the base frame for placing the blade body; a shielding component arranged above the second positioning body, the shielding component is used to form a receiving cavity between the shielding component and the second positioning body, the receiving cavity is used to receive the blade body, and a hollow area is arranged on the shielding component, the hollow area is used for the extension of the tie rod boss. Compared with the prior art, the turbine blade spraying tool can improve the efficiency of turbine blade spraying, reduce processing costs, and meet the needs of automated mass production.

[0003] Before spraying the turbine blades, a positioning device is required to fix the turbine blades. The turbine blade spraying tooling in the above technical solution also has the following defects when in use: since the positioning device is fixed, the turbine blades on the positioning device are also fixed, so that the surface of the turbine blades to be sprayed is also fixed, which reduces the uniformity of the turbine blades during spraying. Therefore, it is necessary to provide a spraying device that improves the uniformity of the turbine blade spraying, aiming to solve the above problems. Summary of the invention

[0004] In view of the shortcomings of the prior art, an object of an embodiment of the present invention is to provide a spraying device for improving the spraying uniformity of turbine blades, so as to solve the problems in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A spraying device for improving the spraying uniformity of a steam turbine blade, comprising:

[0007] A frame, wherein blades are placed in the frame, and the ends and surfaces of the blades are respectively connected with blade roots and tie rod bosses;

[0008] A spraying unit, mounted on the frame, for spraying the blades;

[0009] An intermittent lifting unit is slidably connected in the frame, and a positioning unit is connected at the end thereof. The positioning unit is used to install and fix the blade root, and the intermittent lifting unit is used to cooperate with the positioning unit to realize intermittent lifting of the blade;

[0010] A rotating unit is connected to the surface of the intermittent lifting unit and is used to cooperate with the intermittent lifting unit to realize the rotation of the positioning unit, thereby realizing the rotation of the blades in the positioning unit;

[0011] A steering unit is rotated on the positioning unit, and a shielding frame is connected to the end thereof, and is used to drive the two sets of shielding frames to turn. A spraying groove is provided on the shielding frame, and the spraying groove is correspondingly connected to the reinforcement boss;

[0012] The opening and closing unit is arranged on the positioning unit and connected to the shielding frame, and is used to cooperate with the steering unit to realize the opening and closing of the two sets of shielding frames, thereby realizing the shielding of the blades by the shielding frames, and the spraying unit sprays the reinforcement bosses through the spraying grooves.

[0013] As a preferred technical solution of the present invention, the spray unit includes: a spray box, connected to the side of the frame, with a spray pump installed inside; a spray pipe, connected to the inner wall of the frame, and the end of which is connected to the output end of the spray pump; a fixed frame, connected to the inner wall of the frame, with at least three groups of nozzles installed on the surface, and the nozzles are connected to the end of the spray pipe away from the spray pump.

[0014] As a preferred technical solution of the present invention, the intermittent lifting unit includes: a support frame, which is connected to the inside of the frame and has a vertical groove on its surface; a lifting frame, which is slidably connected in the vertical groove and is rotatably connected to a rotating shaft inside, and the end of the rotating shaft is connected to a positioning unit; an L-shaped frame, which is fixed to the surface of the support frame and has a driving member installed on the side; a rotating frame, whose end is connected to the driving shaft at the output end of the driving member; a round wheel, which is connected to the side of the lifting frame and has an arc groove and a transverse groove on its surface, and the arc groove and the transverse groove are connected end to end; a sliding column, which is fixed to the end side of the rotating frame, and the end of the sliding column is slidably connected in the arc groove and the transverse groove, and the end of the rotating frame away from the sliding column is located at the center of the circle where the arc groove is located.

[0015] As a preferred technical solution of the present invention, the rotating unit includes: a sliding rod, which is horizontally slidably connected in the lifting frame and has a rack installed on the side; a gear, which is installed on the surface of the rotating shaft and meshingly connected with the rack; an inclined groove, which is opened on the supporting frame; and a sliding pin, which is connected to the side of the sliding rod and is slidably connected to the inclined groove on the surface.

[0016] As a preferred technical solution of the present invention, the positioning unit includes: a support, fixed at the end of the rotating shaft, with a placement groove opened inside; a clamping groove, opened on the side of the placement groove, with a rotating shaft rotatably connected inside; a positioning frame, installed on the rotating shaft, with a rubber pad connected to the side; a tilting frame connected to the end of the positioning frame, with a sliding connection between the surface and the blade root.

[0017] As a preferred technical solution of the present invention, the steering unit includes: a driving rod rotatably connected to a support; a rotating frame, one end of which is connected to the surface of the driving rod and the other end of which is rotatably connected to an end of a shielding frame.

[0018] As a preferred technical solution of the present invention, the opening and closing unit includes: an arc-shaped slide groove, which is opened on the support; a positioning groove, which is opened on the support and connected to the end of the arc-shaped slide groove, and the distance between the end of the arc-shaped slide groove away from the positioning groove and the driving rod and the distance between the end of the arc-shaped slide groove close to the positioning groove and the driving rod gradually increase; a slider, which is slidably connected to the surface of the rotating frame, and the side of the slider is rotatably connected to a rolling rod, and the surface of the rolling rod is slidably connected to the inside of the arc-shaped slide groove and the positioning groove; an arc frame, one end of which is hinged to the surface of the slider, and the other end is hinged to the side of the shielding frame.

[0019] When spraying the blades of the steam turbine, the present invention first places the root of the blade in the positioning unit so that the positioning unit can fix the root of the blade. Compared with the prior art, since the positioning device is fixed, the surface of the steam turbine blade to be sprayed is also fixed. By setting an intermittent lifting unit and a rotating unit, the blades can rotate forward or reverse when descending or ascending under the cooperation of the intermittent lifting unit and the rotating unit, thereby improving the uniformity of the spraying of the blades by the spraying unit. And under the action of the intermittent lifting unit, when the positioning unit drives the blades to rise to the highest point, it will stay for a period of time. During the process of the blades staying, the sprayed blades can be replaced, so that multiple groups of blades can be continuously sprayed, thereby improving the efficiency of the steam turbine blade spraying and reducing the processing cost.

[0020] Compared with the prior art which uses manually wrapped and hand-customized shielding copper plates to shield the tie rod bosses on the blade surface, the embodiments of the present invention provide a steering unit and an opening and closing unit to shield the tie rod bosses on the blade surface. When the tie rod bosses on the blade surface are shielded, it is only necessary to rotate the steering unit so that the steering unit can drive the shielding frame to rotate clockwise from a horizontal state to a vertical state. When the shielding frame rotates to the vertical state, the two groups of shielding frames will move closer to each other under the action of the opening and closing unit until the two groups of shielding frames are tightly fitted. At this time, the shielding frame can shield and cover other parts of the blade, and the tie rod bosses extend out of the spray tank, which is convenient for the spray unit to spray the wear-resistant coating on the surface of the tie rod bosses, thereby improving the efficiency of the turbine blade spraying.

[0021] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the overall structure of a spraying device for improving the spraying uniformity of turbine blades provided in an embodiment of the present invention.

[0023] Figure 2 A bottom view of a spraying device for improving the spraying uniformity of turbine blades provided by an embodiment of the present invention.

[0024] Figure 3 It is a schematic structural diagram of the intermittent lifting unit provided in an embodiment of the present invention.

[0025] Figure 4 It is a schematic diagram of the structure of the opening and closing unit provided in an embodiment of the present invention.

[0026] Figure 5 It is a schematic structural diagram of two sets of shielding frames provided in an embodiment of the present invention in a closed state.

[0027] Figure 6 It is a schematic structural diagram of two sets of shielding frames provided in an embodiment of the present invention in an open state.

[0028] Figure 7 It is a schematic diagram of the structure of a positioning unit provided in an embodiment of the present invention.

[0029] Figure 8 It is a schematic diagram of the structure of the positioning frame provided in an embodiment of the present invention.

[0030] Fig. 9 It is a schematic structural diagram of a steering unit provided in an embodiment of the present invention.

[0031] Reference numerals: 1, frame; 11, blade; 12, blade root; 13, tie rod boss; 14, shielding frame; 141, spraying tank; 2, spraying unit; 21, spraying box; 211, feed port; 22, spraying pipe; 23, fixed frame; 24, spray head; 3, intermittent lifting unit; 31, support frame; 32, vertical slot; 33, lifting frame; 34, rotating shaft; 35, L-shaped frame; 36, driving member; 37, rotating frame; 38, sliding column; 39, round wheel; 391, arc slot; 3 92. transverse groove; 4. rotating unit; 41. sliding rod; 411. rack; 42. gear; 43. sliding pin; 44. inclined groove; 5. positioning unit; 51. support; 52. placement groove; 521. card slot; 53. rotating shaft; 54. positioning frame; 541. tilting frame; 542. rubber pad; 6. steering unit; 61. driving rod; 62. rotating frame; 7. opening and closing unit; 71. arc-shaped slide groove; 72. positioning groove; 73. slider; 74. arc-shaped frame; 75. rolling rod. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0034] See also Figures 1 to 9 , a spraying device for improving the spraying uniformity of a turbine blade, comprising:

[0035] A frame 1, wherein a blade 11 is placed in the frame 1, and the end and surface of the blade 11 are respectively connected with a blade root 12 and a tie rod boss 13;

[0036] A spraying unit 2, mounted on the frame 1, for spraying the blade 11;

[0037] An intermittent lifting unit 3 is slidably connected in the frame 1, and a positioning unit 5 is connected to the end thereof. The positioning unit 5 is used to install and fix the blade root 12, and the intermittent lifting unit 3 is used to cooperate with the positioning unit 5 to realize intermittent lifting of the blade 11;

[0038] The rotating unit 4 is connected to the surface of the intermittent lifting unit 3 and is used to cooperate with the intermittent lifting unit 3 to realize the rotation of the positioning unit 5, thereby realizing the rotation of the blade 11 in the positioning unit 5;

[0039] The steering unit 6 is rotated on the positioning unit 5, and the end thereof is connected with a shielding frame 14, and is used to drive the two sets of shielding frames 14 to turn. The shielding frame 14 is provided with a spraying groove 141, and the spraying groove 141 is correspondingly connected to the reinforcement boss 13;

[0040] The opening and closing unit 7 is provided on the positioning unit 5 and connected to the shielding frame 14, and is used to cooperate with the steering unit 6 to realize the opening and closing of the two sets of shielding frames 14, thereby realizing the shielding of the blades 11 by the shielding frames 14, and the spraying unit 2 sprays the tensioning boss 13 through the spraying groove 141.

[0041] In an embodiment of the present invention, when spraying the blade 11 of the steam turbine, the blade root 12 of the blade 11 is first placed in the positioning unit 5, so that the positioning unit 5 can fix the blade root 12. Under the action of the rotating unit 4, the blade 11 will rotate forward or reverse when descending or ascending, so the uniformity of the spraying of the blade 11 by the spraying unit 2 is effectively improved. And under the action of the intermittent lifting unit 3, when the positioning unit 5 drives the blade 11 to rise to the highest point, it will stay for a period of time. During the stay of the blade 11, the sprayed blade 11 can be replaced, so that multiple groups of blades 11 can be continuously sprayed, which improves the efficiency of the steam turbine blade spraying and reduces the processing cost.

[0042] When the blade 11 is sprayed as a whole, the steering unit 6 is rotated 90 degrees counterclockwise so that the steering unit 6 can drive the shielding frame 14 to rotate to a horizontal state, and the shielding frame 14 will also rotate at the end of the steering unit 6 to a direction perpendicular to the steering unit 6 under the action of the opening and closing unit 7, so that the two groups of shielding frames 14 will open to each other, so that the blade 11 is exposed as a whole. At this time, the spraying unit 2 can spray the blade 11 as a whole.

[0043] When shielding the tie rod boss 13 on the surface of the blade 11, just rotate the steering unit 6 clockwise so that the steering unit 6 can drive the shielding frame 14 to rotate clockwise from the horizontal state to the vertical state. When the shielding frame 14 rotates to the vertical state, the two groups of shielding frames 14 will move closer to each other under the action of the opening and closing unit 7 until the two groups of shielding frames 14 are tightly fitted. At this time, the shielding frame 14 can shield and cover other parts of the blade 11, and the tie rod boss 13 extends out from the spraying groove 141, which is convenient for the spraying unit 2 to spray the wear-resistant coating on the surface of the tie rod boss 13, thereby improving the efficiency of the turbine blade spraying and reducing the processing cost.

[0044] In one embodiment of the present invention, Figure 1 and Figure 2 As shown, the spraying unit 2 includes:

[0045] A spray box 21 is connected to the side of the frame 1 and has a spray pump installed inside;

[0046] The spray pipe 22 is connected to the inner wall of the frame 1, and the end thereof is connected to the output end of the spray pump;

[0047] The fixing frame 23 is connected to the inner wall of the frame 1 , and at least three groups of spray heads 24 are installed on the surface. The spray heads 24 are connected to the end of the spray pipe 22 away from the spray pump.

[0048] In this embodiment, a feed port 211 is installed on the spray box 21 . When spraying the blade 11 of the steam turbine, the blade root 12 of the blade 11 is first placed in the positioning unit 5 so that the positioning unit 5 can fix the blade root 12 .

[0049] The coating material is added into the spray box 21 through the feed port 211, and the spray pump in the spray box 21 is turned on. Thus, the coating material in the spray box 21 can be introduced into the spray pipe 22 under the action of the output end of the spray pump, and sprayed out from the nozzle 24 at the end of the spray pipe 22, thereby achieving spraying on the surface of the turbine blade 11.

[0050] In one embodiment of the present invention, Figure 1 and Figure 3 As shown, the intermittent lifting unit 3 includes:

[0051] The support frame 31 is connected to the inside of the frame 1 and has a vertical groove 32 on its surface;

[0052] The lifting frame 33 is slidably connected in the vertical slot 32, and is internally rotatably connected with a rotating shaft 34, and the end of the rotating shaft 34 is connected to the positioning unit 5;

[0053] An L-shaped frame 35 is fixed to the surface of the support frame 31, and a driving member 36 is installed on the side;

[0054] A rotating frame 37, the end of which is connected to the driving shaft at the output end of the driving member 36;

[0055] The round wheel 39 is connected to the side of the lifting frame 33, and has an arc groove 391 and a transverse groove 392 on its surface, and the arc groove 391 and the transverse groove 392 are connected end to end;

[0056] The sliding column 38 is fixed to the end side of the rotating frame 37, and the end of the sliding column 38 is slidably connected in the arc groove 391 and the transverse groove 392. The end of the rotating frame 37 away from the sliding column 38 is located at the center of the circle where the arc groove 391 is located.

[0057] In this embodiment, the driving member 36 is turned on, and the output end of the driving member 36 can drive the rotating frame 37 to rotate via the driving shaft. Figure 3 As shown, when the rotating frame 37 rotates clockwise, the rotating frame 37 can drive the sliding post 38 to slide clockwise in the arc groove 391 until the sliding post 38 slides to the right end of the arc groove 391, that is, Figure 3 or Figure 6 The rightmost end of the middle transverse groove 392.

[0058] When the rotating frame 37 continues to drive the sliding column 38 to rotate clockwise, the round wheel 39 will drive the lifting frame 33 to descend in the vertical groove 32 under the action of the transverse groove 392 and the sliding column 38, until the sliding column 38 rotates to the lowest point, at which time the round wheel 39 slides downward to the lowest point, and the sliding column 38 is located at the midpoint of the transverse groove 392. When the rotating frame 37 continues to drive the sliding column 38 to rotate, the sliding column 38 will drive the round wheel 39 to rise through the transverse groove 392, so that the round wheel 39 drives the lifting frame 33 to rise in the vertical groove 32 until the sliding column 38 slides to the leftmost end of the transverse groove 392.

[0059] When the sliding post 38 slides to the leftmost end of the transverse groove 392, the round wheel 39 rises to the highest point, and at the same time, the end of the rotating frame 37 away from the sliding post 38 is located at the center of the circle where the arc groove 391 is located. Therefore, when the rotating frame 37 rotates clockwise, the rotating frame 37 will drive the end of the sliding post 38 to slide clockwise in the arc groove 391 until the end of the sliding post 38 slides to the right end of the arc groove 391 again. During the process of the sliding post 38 sliding clockwise in the arc groove 391, since the end of the rotating frame 37 away from the sliding post 38 is located at the center of the circle where the arc groove 391 is located, the position of the round wheel 39 will not change, that is, the round wheel 39 will not rise or fall during this process. When the sliding post 38 slides into the transverse groove 392 again, the working process is the same as the above, and the round wheel 39 will first descend and then rise under the action of the transverse groove 392 and the sliding post 38.

[0060] To sum up, with the cooperation of the sliding column 38, the arc groove 391, and the transverse groove 392, the circular wheel 39 will first descend, then rise, and make intermittent stops after rising. Because the circular wheel 39 is connected to the lifting frame 33, the circular wheel 39 will drive the positioning unit 5 to move synchronously through the lifting frame 33 and the rotating shaft 34, so that the positioning unit 5 drives the blades 11 inside it to first descend, then rise, and make intermittent stops after rising.

[0061] Since the blade 11 is reciprocatingly intermittently lifted and lowered, the uniformity of the coating material sprayed by the spray unit 2 on the blade 11 is increased relative to the blade 11 being stationary. The driving member 36 can be an electric motor or a pneumatic motor to drive the rotating frame 37 to rotate stably.

[0062] In one embodiment of the present invention, Figure 2 and Figure 3 As shown, the rotating unit 4 includes:

[0063] The sliding rod 41 is horizontally slidably connected in the lifting frame 33, and a rack 411 is installed on the side;

[0064] The gear 42 is mounted on the surface of the rotating shaft 34 and is meshed with the rack 411;

[0065] An inclined slot 44 is provided on the support frame 31;

[0066] The sliding pin 43 is connected to the side surface of the sliding rod 41 and is slidably connected in the inclined groove 44 .

[0067] In this embodiment, when the lifting frame 33 is being lifted or lowered, the lifting frame 33 can drive the sliding rod 41 inside thereof to be lifted or lowered synchronously, so that the sliding rod 41 can drive the sliding pin 43 to be lifted or lowered.

[0068] When the lifting frame 33 descends, the sliding rod 41 can drive the sliding pin 43 to descend synchronously. Since the end of the sliding pin 43 is slidably connected in the inclined groove 44, the sliding rod 41 will slide to the right in the lifting frame 33 under the action of the sliding pin 43 and the inclined groove 44. When sliding to the right, the sliding rod 41 can drive the rack 411 to slide synchronously. Since the rack 411 and the gear 42 are meshed and connected, the gear 42 will drive the rotating shaft 34 to rotate forward in the lifting frame 33 under the action of the rack 411, so that the rotating shaft 34 can drive the blade 11 to rotate forward through the positioning unit 5. That is to say, the blade 11 will also rotate forward while descending.

[0069] When the lifting frame 33 ascends, contrary to the above working process, the sliding pin 43 will also ascend. Similarly, the sliding rod 41 will slide to the left in the lifting frame 33 under the action of the sliding pin 43 and the inclined groove 44. At this time, the gear 42 will drive the rotating shaft 34 to rotate in the opposite direction in the lifting frame 33 under the action of the rack 411, so that the rotating shaft 34 can drive the blade 11 to rotate in the opposite direction through the positioning unit 5. That is to say, the blade 11 will also rotate in the opposite direction while ascending.

[0070] To sum up, when the intermittent lifting unit 3 drives the blade 11 to descend through the positioning unit 5, under the action of the rotating unit 4, the blade 11 will rotate forward while descending; conversely, when the intermittent lifting unit 3 drives the blade 11 to ascend through the positioning unit 5, the blade 11 will rotate reversely while ascending.

[0071] Since the blades 11 rotate forward or backward when they are descending or ascending, the uniformity of the spraying of the blades 11 by the spraying unit 2 is effectively improved. And under the action of the intermittent lifting unit 3, when the positioning unit 5 drives the blades 11 to rise to the highest point, it will stay for a period of time. During the stay of the blades 11, the spraying pump can be turned off and the sprayed blades 11 can be replaced, so that multiple groups of blades 11 can be continuously sprayed, which improves the efficiency of the turbine blade spraying and reduces the processing cost.

[0072] In one embodiment of the present invention, Figure 7 and Figure 8 As shown, the positioning unit 5 includes:

[0073] The support 51 is fixed to the end of the rotating shaft 34 and has a placement groove 52 formed therein;

[0074] The card slot 521 is provided on the side of the placement slot 52, and is rotatably connected to the rotation shaft 53;

[0075] A positioning frame 54 is mounted on the rotating shaft 53 and has a rubber pad 542 connected to the side thereof;

[0076] The tilting frame 541 is connected to the end of the positioning frame 54 , and is slidably connected between the surface and the blade root 12 .

[0077] In this embodiment, if Figure 6 As shown, when fixing the blade 11, the blade root 12 of the blade 11 is inserted into the placement groove 52 on the support 51 until the blade root 12 contacts the surface of the tilting frame 541, so that the tilting frame 541 will drive the rotating shaft 53 to rotate in the slot 521 under the squeezing of the end of the blade root 12, and then the rotating shaft 53 can drive the positioning frame 54 on its surface to rotate, so that the positioning frame 54 drives the rubber pad 542 on the side to move inward until the rubber pad 542 is in close contact with the surface of the blade root 12, so the blade root 12 can be limited and fixed under the action of multiple groups of positioning frames 54 and rubber pads 542.

[0078] like Figure 7 As shown, at least eight groups of positioning frames 54 are provided, and the positioning frames 54 and the blade root 12 can be more closely fitted through the cooperation of multiple groups of positioning frames 54. When the blade 11 needs to be taken out, the blade 11 can be pulled upward, and the blade 11 can drive the blade root 12 to move upward, so the blade root 12 will reduce the pressure on the surface of the tilting frame 541, and then the positioning frame 54 will also reduce the pressure on the surface of the blade root 12, so the blade root 12 of the blade 11 can be easily taken out from the placement groove 52.

[0079] In one embodiment of the present invention, Figure 4 and Fig. 9 As shown, the steering unit 6 includes:

[0080] A driving rod 61 is rotatably connected to the support 51;

[0081] The rotating frame 62 has one end connected to the surface of the driving rod 61 and the other end rotatably connected to the end of the shielding frame 14 .

[0082] In this embodiment, during the spraying process of the blade 11, the inconsistency between the mating surface of the tie rod boss 13 and the spraying material of the blade 11 often requires step-by-step spraying. The surface of the tie rod boss 13 is sprayed with a wear-resistant coating, which serves to reduce the friction and wear caused by the relative movement between the assembly surfaces of the blade 11. During this process, the non-sprayed parts of the blade 11 need to be masked, exposing only the mating surface of the tie rod boss 13 that needs to be sprayed.

[0083] like Figure 4As shown, when shielding the rib boss 13 on the surface of the blade 11, the driving rod 61 is rotated clockwise so that the driving rod 61 drives the rotating frame 62 to rotate 90 degrees clockwise, that is, the rotating frame 62 rotates clockwise from the horizontal state to the vertical state. When the rotating frame 62 rotates, it can drive the shielding frame 14 at its end to rotate synchronously. When the shielding frame 14 rotates to the vertical state, the two sets of shielding frames 14 will move closer to each other under the action of the opening and closing unit 7 until the two sets of shielding frames 14 are tightly fitted (such as Figure 5 The state of the reinforcing bar boss 13 on the surface of the blade 11 is shown in FIG. 1 ), at this time, the reinforcing bar boss 13 on the surface of the blade 11 will extend out of the spraying slot 141. The shielding frame 14 can be used to shield and cover other parts of the blade 11, and the reinforcing bar boss 13 extends out of the spraying slot 141, so that the spraying unit 2 can spray the wear-resistant coating on the surface of the reinforcing bar boss 13.

[0084] Furthermore, the driving rod 61 may be connected to a handle or an output end of a servo motor that drives the driving rod 61 to rotate, so as to drive the driving rod 61 to rotate stably.

[0085] In one embodiment of the present invention, Figure 5 and Figure 6 As shown, the opening and closing unit 7 includes:

[0086] An arc-shaped slide groove 71 is provided on the support 51;

[0087] The positioning groove 72 is formed on the support 51 and communicates with the end of the arc-shaped slide groove 71. The distance between the end of the arc-shaped slide groove 71 away from the positioning groove 72 and the driving rod 61 and the distance between the end of the arc-shaped slide groove 71 close to the positioning groove 72 and the driving rod 61 gradually increase.

[0088] The slider 73 is slidably connected to the surface of the rotating frame 62, and the side of the slider 73 is rotatably connected to a rolling rod 75, and the surface of the rolling rod 75 is slidably connected to the inside of the arc-shaped sliding groove 71 and the positioning groove 72;

[0089] The arc frame 74 has one end hinged on the surface of the slider 73 and the other end hinged on the side of the shielding frame 14 .

[0090] In this embodiment, when shielding the tie rod boss 13 on the surface of the blade 11, the driving rod 61 is rotated clockwise, and the driving rod 61 can drive the shielding frame 14 to rotate 90 degrees through the rotating frame 62 until the shielding frame 14 rotates to a vertical state.

[0091] During the process of the driving rod 61 rotating 90 degrees clockwise, the driving rod 61 can drive the slider 73 on its surface to rotate synchronously. Since the rolling rod 75 connected to the side of the slider 73 is slidably connected in the arc-shaped slide groove 71 and the positioning groove 72, the slider 73 can drive the rolling rod 75 to slide clockwise in the arc-shaped slide groove 71. Since the distance between the end of the arc-shaped slide groove 71 away from the positioning groove 72 and the driving rod 61 and the distance between the end of the arc-shaped slide groove 71 close to the positioning groove 72 and the driving rod 61 gradually increase, during the process of the rolling rod 75 sliding clockwise in the arc-shaped slide groove 71, the slider 73 will slide on the surface of the rotating frame 62 toward the end of the shielding frame 14 under the action of the rolling rod 75 and the arc-shaped slide groove 71. Therefore, the slider 73 can drive the shielding frame 14 to rotate at the end of the rotating frame 62 through the arc-shaped frame 74 until the rolling rod 75 slides into the positioning groove 72 at the end of the arc-shaped slide groove 71, and at this time, the shielding frame 14 rotates to the same direction as the rotating frame 62 (such as Figure 5 status).

[0092] To sum up, when the rotating frame 62 rotates 90 degrees clockwise, the shielding frame 14 will not only rotate 90 degrees synchronously, but the shielding frame 14 will also rotate at the end of the rotating frame 62 to the same direction as the rotating frame 62 under the action of the opening and closing unit 7, so that the two groups of shielding frames 14 will fit tightly, so other parts of the blade 11 can be shielded and covered by the two groups of shielding frames 14, and the tie rod boss 13 will extend out of the spray groove 141, so that the spray unit 2 can spray the wear-resistant coating on the surface of the tie rod boss 13.

[0093] Similarly, when the entire blade 11 is sprayed, the driving rod 61 is rotated 90 degrees counterclockwise so that the driving rod 61, the rotating frame 62 and the shielding frame 14 are all rotated to a horizontal state (such as Figure 6 Similarly, in contrast to the above working process, when the rotating frame 62 rotates 90 degrees counterclockwise, the shielding frame 14 will not only rotate 90 degrees synchronously, but also the shielding frame 14 will rotate at the end of the rotating frame 62 to a direction perpendicular to the rotating frame 62 under the action of the opening and closing unit 7, so that the two sets of shielding frames 14 will open to each other, so that the blades 11 are exposed as a whole (such as Figure 6 state), at this time, the spraying unit 2 can spray the entire blade 11, thereby improving the efficiency of the turbine blade spraying and reducing the processing cost.

[0094] The working principle of the present invention is: when spraying the blade 11 of the steam turbine, the blade root 12 of the blade 11 is first placed in the positioning unit 5, so that the positioning unit 5 can fix the blade root 12. When the intermittent lifting unit 3 drives the blade 11 to descend through the positioning unit 5, under the action of the rotating unit 4, the blade 11 will rotate forward while descending; conversely, when the intermittent lifting unit 3 drives the blade 11 to rise through the positioning unit 5, the blade 11 will rotate in the opposite direction while rising. Since the blade 11 will rotate forward or reverse when descending or ascending, the uniformity of the spraying of the blade 11 by the spraying unit 2 is effectively improved. And under the action of the intermittent lifting unit 3, when the positioning unit 5 drives the blade 11 to rise to the highest point, it will stay for a period of time. During the stay of the blade 11, the spraying pump can be turned off, and the blade 11 after spraying can be replaced, so that multiple groups of blades 11 can be continuously sprayed, which improves the efficiency of the turbine blade spraying and reduces the processing cost.

[0095] When the blade 11 is sprayed as a whole, the driving rod 61 is rotated 90 degrees counterclockwise so that the driving rod 61, the rotating frame 62 and the shielding frame 14 are all rotated to a horizontal state (such as Figure 6 When the rotating frame 62 rotates 90 degrees counterclockwise, the shielding frame 14 will not only rotate 90 degrees synchronously, but also rotate at the end of the rotating frame 62 to a direction perpendicular to the rotating frame 62 under the action of the opening and closing unit 7, so that the two sets of shielding frames 14 will open to each other, so that the blades 11 are exposed as a whole (such as Figure 6 state), at this time, the spraying unit 2 can spray the entire blade 11.

[0096] When shielding the rib boss 13 on the surface of the blade 11, the driving rod 61 is rotated clockwise so that the driving rod 61 drives the rotating frame 62 to rotate 90 degrees clockwise, that is, the rotating frame 62 rotates clockwise from the horizontal state to the vertical state. When the rotating frame 62 rotates, it can drive the shielding frame 14 at its end to rotate synchronously. When the shielding frame 14 rotates to the vertical state, the two sets of shielding frames 14 will move closer to each other under the action of the opening and closing unit 7 until the two sets of shielding frames 14 are tightly fitted (such as Figure 5 The state of the reinforcing bar boss 13 on the surface of the blade 11 is shown in FIG. 1 ), at which time the reinforcing bar boss 13 on the surface of the blade 11 will extend out of the spraying slot 141. The shielding frame 14 can shield and cover other parts of the blade 11, and the reinforcing bar boss 13 extends out of the spraying slot 141, which makes it easier for the spraying unit 2 to spray the wear-resistant coating on the surface of the reinforcing bar boss 13, thereby improving the efficiency of the turbine blade spraying and reducing the processing cost.

[0097] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0098] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spraying device for improving the uniformity of spraying of steam turbine blades, characterized in that: The spraying device for improving the spraying uniformity of steam turbine blades comprises: A frame (1), wherein a blade (11) is placed in the frame (1), and the end and surface of the blade (11) are respectively connected to a blade root (12) and a tie rod boss (13); A spraying unit (2), mounted on the frame (1), and used for spraying the blade (11); An intermittent lifting unit (3) is slidably connected in the frame (1), and is connected to a positioning unit (5) at its end. The positioning unit (5) is used to install and fix the blade root (12). The intermittent lifting unit (3) is used to cooperate with the positioning unit (5) to achieve intermittent lifting of the blade (11). The positioning unit (5) comprises: a support (51) fixed to the end of the rotating shaft (34), and having a placement groove (52) inside; a clamping groove (521) opened on the side of the placement groove (52), and having a rotating shaft (53) rotatably connected inside; a positioning frame (54) installed on the rotating shaft (53), and having a rubber pad (542) connected to the side; and a tilting frame (541) connected to the end of the positioning frame (54), and having a surface slidably connected to the blade root (12). A rotating unit (4) is connected to the surface of the intermittent lifting unit (3) and is used to cooperate with the intermittent lifting unit (3) to realize the rotation of the positioning unit (5), thereby realizing the rotation of the blade (11) in the positioning unit (5); A steering unit (6) is rotatable on the positioning unit (5), and an end portion is connected to a shielding frame (14) for driving two groups of shielding frames (14) to steer. The shielding frame (14) is provided with a spraying groove (141), and the spraying groove (141) and the reinforcing bar boss (13) are correspondingly connected. The steering unit (6) comprises: a driving rod (61) rotatably connected to a support (51); and a rotating frame (62) having an end portion connected to a surface of the driving rod (61) and the other end portion rotatably connected to an end portion of the shielding frame (14). The opening and closing unit (7) is provided on the positioning unit (5) and connected to the shielding frame (14), and is used to cooperate with the steering unit (6) to realize the opening and closing of the two sets of shielding frames (14), thereby realizing the shielding of the blades (11) by the shielding frames (14), and the spraying unit (2) spraying the reinforcing bar boss (13) through the spraying groove (141). The opening and closing unit (7) comprises: an arc-shaped slide groove (71) provided on the support (51); a positioning groove (72) provided on the support (51) and connected to the end of the arc-shaped slide groove (71), and the arc-shaped slide groove (71) is far away from the support (51). The distance between the end of the positioning groove (72) and the driving rod (61) and the distance between the end of the arc-shaped slide groove (71) close to the positioning groove (72) and the driving rod (61) gradually increase; the slider (73) is slidably connected to the surface of the rotating frame (62), and the side of the slider (73) is rotatably connected to a rolling rod (75), and the surface of the rolling rod (75) is slidably connected to the inside of the arc-shaped slide groove (71) and the positioning groove (72); the arc-shaped frame (74) has one end hinged to the surface of the slider (73) and the other end hinged to the side of the shielding frame (14).

2. The spraying device for improving the spraying uniformity of steam turbine blades according to claim 1 is characterized in that: The spraying unit (2) comprises: A spray box (21) is connected to the side of the frame (1) and has a spray pump installed inside; A spray pipe (22) is connected to the inner wall of the frame (1), and its end is connected to the output end of the spray pump; The fixed frame (23) is connected to the inner wall of the frame (1), and at least three groups of spray heads (24) are installed on the surface. The spray heads (24) are connected to the end of the spray pipe (22) away from the spray pump.

3. The spraying device for improving the spraying uniformity of turbine blades according to claim 1, characterized in that: The intermittent lifting unit (3) comprises: A support frame (31) is connected to the inside of the frame (1) and has a vertical groove (32) on its surface; A lifting frame (33) is slidably connected in the vertical slot (32), and is internally rotatably connected to a rotating shaft (34), wherein the end of the rotating shaft (34) is connected to a positioning unit (5); An L-shaped frame (35) is fixed on the surface of the support frame (31) and a driving member (36) is installed on the side thereof; A rotating frame (37), the end of which is connected to the driving shaft at the output end of the driving member (36); The round wheel (39) is connected to the side of the lifting frame (33), and has an arc groove (391) and a transverse groove (392) on its surface, wherein the arc groove (391) and the transverse groove (392) are connected end to end; The sliding column (38) is fixed on the end side of the rotating frame (37), and the end of the sliding column (38) is slidably connected in the arc groove (391) and the transverse groove (392), and the end of the rotating frame (37) away from the sliding column (38) is located at the center of the circle where the arc groove (391) is located.

4. The spraying device for improving the spraying uniformity of turbine blades according to claim 3 is characterized in that: The rotating unit (4) comprises: A sliding rod (41) is horizontally slidably connected in the lifting frame (33) and has a rack (411) installed on the side thereof; A gear (42) is mounted on the surface of the rotating shaft (34) and is meshedly connected with the rack (411); An inclined slot (44) is provided on the support frame (31); The sliding pin (43) is connected to the side surface of the sliding rod (41) and is slidably connected in the inclined groove (44).

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