Automatic blow-drying device for steam turbine blades

Abstract

The present application relates to a kind of automatic blow washing and drying device of steam turbine blade, including blow washing box, blow washing box includes the water collecting tank of bottom and the horizontal annularly arranged conveying channel of upper portion, the upper side of water collecting tank is fixedly connected with water leakage pedal, one side of water leakage pedal is fixed with cleaning water tank, the conveying channel of cleaning water tank is formed with the cleaning channel of isohypso-trapezoidal shape and is concave downwards above it;The conveying channel is inserted with several groups of blade hanger, blade hanger is connected in horizontal annular conveying chain belt, and conveying chain belt is arranged in conveying channel;Water leakage pedal on the side of cleaning water tank is fixed with several groups of water blowing mechanism opposite to blade hanger.This automatic blow washing and drying device can realize the automatic cleaning and water blowing of steam turbine blade, can effectively improve production efficiency, reduce the labor intensity of worker.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of blowing and drying equipment, more particularly to an automatic blowing and drying device for turbine blades. BACKGROUND

[0002] At present, a steam turbine can convert thermal energy into mechanical energy, and a steam turbine system comprises a steam turbine shell, a plurality of sets of impellers arranged longitudinally along the shell axis, etc. Some of the impellers are composed of a plurality of sets of annularly arranged blades, the blades are provided with tapered blade roots, and the blade roots are connected based on the blade roots. During the production of the blade roots, milling processing is required. After the milling processing, cutting chips or cutting chip liquid will be left on the blades. The blades need to be immersed in a water tank for cleaning, and then air blowing is performed to blow away the remaining cutting chips or water droplets, etc. This operation is called water blowing operation. At present, the air blowing work of the water blowing operation is generally manually operated by workers. Manual air blowing has the problem of omissions, and the workers also have to repeatedly blow air, which is labor-intensive. Therefore, an automatic water blowing operation device needs to be designed. SUMMARY

[0003] The purpose of the present application is to overcome the deficiencies of the prior art and provide an automatic blowing and drying device for turbine blades. The automatic blowing and drying device can automatically clean and blow water for turbine blades, effectively improve production efficiency, and reduce the labor intensity of workers.

[0004] An automatic blowing and drying device for turbine blades comprises a blowing and washing tank, which comprises a water receiving groove at the bottom and a horizontal annular conveying groove at the upper part. A water leakage pedal is fixedly connected to the upper side of the water receiving groove. A cleaning water tank is fixed to one side of the water leakage pedal. A cleaning groove in the shape of an isosceles trapezoid is formed in the conveying groove directly above the cleaning water tank. A plurality of sets of blade hangers are inserted into the conveying groove. The blade hangers are connected to a horizontal annular conveying chain belt. The conveying chain belt is arranged in the conveying groove. A plurality of sets of water blowing mechanisms opposite to the blade hangers are fixed to the water leakage pedal on one side of the cleaning water tank.

[0005] The blade hanger comprises a T-shaped hanger seat. A plug-in buckle groove is formed at the bottom of the hanger seat. Two vertical water blowing pipes are arranged on both sides of the hanger seat. The upper ends of the water blowing pipes are fixed to both ends of a hinge shaft. The hinge shaft is inserted into the upper end of the hanger seat. A limiting and tensioning assembly opposite to the plug-in buckle groove is inserted into the upper part of the water blowing pipe. The limiting and tensioning assembly comprises a horizontal T-shaped tensioning rod. A spherical pressure head is fixed to the end of the tensioning rod and passes through the water blowing pipe. A retaining ring is inserted and fixed to the tensioning rod close to the pressure head. A tensioning spring is inserted into the tensioning rod. The two ends of the tensioning spring are pressed against the retaining ring and the water blowing pipe. A plurality of obliquely arranged and horn-shaped air blowing openings are formed in the opposite outer walls of the water blowing pipe.

[0006] The blowing mechanism comprises a "N" shaped air inlet pipe, a vertical connecting rod is fixedly connected to the middle part of the air inlet pipe, a T shaped positioning pin is fixedly connected to the lower end of the connecting rod, the positioning pin is fixedly connected to a cam, an L shaped lifting seat is arranged below the cam, a vertical motor mounting plate is formed on the lifting seat, a horizontal swing motor is fixedly connected to the motor mounting plate, and the cam is sleeved on the rotating shaft of the swing motor;

[0007] Two ends of the upper part of the air inlet pipe are respectively inserted into two blowing pipes of a blade hanger, a horizontal air inlet pipe is fixedly connected to one side of the air inlet pipe, a vertical support plate is arranged below the air inlet pipe, a vertical positioning guide groove is formed on the upper end surface of the support plate and opposite to the air inlet pipe, vertical guide rails are fixedly connected to the side walls of the support plate on both sides of the positioning guide groove, a sliding block is sleeved on the guide rails, the sliding block is fixedly connected to the side wall of the lifting seat, a horizontal connecting plate is formed on the lower end of the support plate, a vertical lifting cylinder is fixedly connected to the connecting plate, and a piston rod of the lifting cylinder is fixedly connected to the lifting seat.

[0008] Preferably, a longitudinal T shaped connecting shaft is inserted into the upper end of the hanger, a roller is sleeved on the connecting shaft, the roller is inserted into a conveying groove, one end of the connecting shaft is fixedly connected to a chain link of a conveying chain, a driving wheel is connected to the conveying chain, a rotating shaft of a rotary motor is fixedly connected to the driving wheel, and the rotary motor is fixedly connected to the blowing box.

[0009] Preferably, the blowing ports are linearly and vertically and uniformly distributed on the blowing pipe, a plug is inserted into the upper end of the blowing pipe, both ends of the hinge shaft are fixedly connected to the plug, a supporting spacer is sleeved on the hinge shaft between the blowing pipe and the hanger, and one end of the supporting spacer is fixedly connected to the hanger.

[0010] Preferably, the insertion buckle groove on the hanger is conical, the insertion buckle groove penetrates through the lower bottom surface and one side wall of the hanger, a spherical positioning recess is formed on the other side wall of the hanger, and a plurality of clamping grooves are formed on the opposite inner walls of the insertion buckle groove,

[0011] The pressing head of the limiting and tensioning assembly on one side of the hanger is inserted into the insertion buckle groove of the hanger, and the pressing head of the limiting and tensioning assembly on the other side of the hanger is inserted into and abuts against the positioning recess of the hanger.

[0012] Preferably, the groove width of the positioning guide groove on the support plate is equal to the outer diameter of the air inlet pipe, the vertical distance from the air inlet pipe to the upper end surface of the support plate is less than the length of the air inlet pipe inserted into the blowing pipe, and the length of the positioning guide groove is greater than the length of the air inlet pipe inserted into the blowing pipe.

[0013] Preferably, a gas pipe quick connector is fixedly connected to the end of the air inlet pipe, and a plastic air pipe is inserted into the gas pipe quick connector.

[0014] Triangular reinforcing plates are arranged on both sides of the lifting cylinder and fixedly connected to the lifting seat.

[0015] Preferably, the outer diameter of the air inlet pipe is equal to the inner diameter of the blow pipe, a plurality of mounting holes are formed on the connecting plate, bolts are inserted into the mounting holes, the bolts are screwed and fixed on the water leakage pedal, and a plurality of water leakage grooves are formed on the water leakage pedal and communicate with the water collecting groove.

[0016] The automatic blow washing and drying device has the advantages that:

[0017] The automatic blow washing and drying device can realize automatic cleaning and water blowing of the steam turbine blade, effectively improve production efficiency, and reduce labor intensity of workers. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a front view of the structure of the present application;

[0019] Figure 2 is a perspective view of the inner blade hanger of the present application;

[0020] Figure 3 is a front view of the structure of the inner blade hanger of the present application;

[0021] Figure 4 is a front view of the structure of the inner water blowing mechanism of the present application;

[0022] Figure 5 is a perspective view of the connection between the inner water blowing mechanism and the blade hanger of the present application.

[0023] In the figure: 1, water collecting groove; 2, water leakage pedal; 3, cleaning water tank; 4, blade hanger; 5, conveying channel; 6, water blowing mechanism. DETAILED DESCRIPTION

[0024] Embodiment: see Figures 1 to 5 As shown in the figure, an automatic blow washing and drying device for a steam turbine blade comprises a blow washing tank, the blow washing tank comprises a water collecting groove 1 at the bottom and a conveying channel 5 arranged horizontally and annularly at the upper part, one end of the conveying channel 5 extends out of the blow washing tank; the water collecting groove 1 is fixedly connected with a water leakage pedal 2 at the upper side, the water leakage pedal 2 is fixedly connected with a cleaning water tank 3 at one side, and a cleaning channel 51 recessed downward and in the shape of an isosceles trapezoid is formed on the conveying channel 5 directly above the cleaning water tank 3; a plurality of groups of blade hangers 4 are inserted into the conveying channel 5, the blade hangers 4 are connected with a conveying chain belt arranged in the conveying channel 5; the water leakage pedal 2 at one side of the cleaning water tank 3 is fixedly connected with a plurality of groups of water blowing mechanisms 6 opposite to the blade hangers 4;

[0025] The blade hanger 4 comprises a T-shaped hanger seat 41, the bottom of the hanger seat 41 is formed with a plug-in slot 411, both sides of the hanger seat 41 are respectively provided with vertical water blowing pipes 44, the upper ends of the water blowing pipes 44 are respectively fixed at both ends of a hinge shaft 45, the hinge shaft 45 is inserted into the upper end of the hanger seat 41; the upper part of the water blowing pipe 44 is inserted with a limiting tension assembly 46 opposite to the plug-in slot 411, the limiting tension assembly 46 comprises a transverse T-shaped tension rod 461, the end of the tension rod 461 is fixed with a spherical pressure head 462 penetrating through the water blowing pipe 44, a retaining ring 463 is inserted and fixed on the tension rod 461 close to the pressure head 462, a tension spring 464 is inserted on the tension rod 461, both ends of the tension spring 464 are respectively pressed against the retaining ring 463 and the water blowing pipe 44, the opposite outer walls of the middle and lower part of the water blowing pipe 44 are formed with a plurality of obliquely arranged and trumpet-shaped air blowing ports 441; the head of the tension rod 461 is fixed with a pull ring 465;

[0026] The plug-in slot 411 on the hanger seat 41 is conical, the plug-in slot 411 penetrates through the lower bottom surface and one side wall of the hanger seat 41, the other side wall of the hanger seat 41 is formed with a spherical positioning recess 412, a plurality of clamping grooves are formed on the opposite inner walls of the plug-in slot 411, the structure of the plug-in slot 411 is matched with the shape of the blade root of the steam turbine blade;

[0027] The pressure head 462 of the limiting tension assembly 46 on one side of the hanger seat 41 is inserted into the plug-in slot 411 of the hanger seat 41, the pressure head 462 of the limiting tension assembly 46 on the other side of the hanger seat 41 is inserted into and pressed against the positioning recess 412 of the hanger seat 41, the positioning recess 412 can ensure that the water blowing pipe 44 is vertically arranged;

[0028] The water blowing mechanism 6 comprises a "N" shaped air inlet pipe 61, a vertical connecting rod 62 is fixedly inserted into the middle part of the air inlet pipe 61, a T-shaped positioning pin 66 is inserted into the lower end of the connecting rod 62, the positioning pin 66 is fixedly inserted into a cam 64, an L-shaped lifting seat 65 is arranged below the cam 64, a vertical motor mounting plate 651 is formed on the lifting seat 65, a horizontal swing motor 67 is fixed on the motor mounting plate 651, the cam 64 is fixedly inserted into the rotating shaft of the swing motor 67;

[0029] The upper end of the air inlet pipe 61 is inserted into the two blow pipes 44 of the blade hanger 4, and the side of the air inlet pipe 61 is fixed with a horizontal transverse air inlet pipe 612. The air inlet pipe 612 is fixedly connected with a plastic air pipe. The lower side of the air inlet pipe 612 is provided with a vertical support plate 68. The upper end surface of the support plate 68 is formed with a vertical positioning guide groove 681 opposite to the air inlet pipe 612. The side walls of the support plate 68 on both sides of the positioning guide groove 681 are fixedly provided with vertical guide rails 69. The guide rails 69 are inserted with sliding blocks 610. The sliding blocks 610 are fixed on the side walls of the lifting seat 65. The lower end of the support plate 68 is formed with a horizontal connecting plate 682. The connecting plate 682 is fixedly provided with a vertical lifting cylinder 611. The piston rod of the lifting cylinder 611 is fixed on the lifting seat 65.

[0030] The upper end of the hanger seat 41 is inserted with a longitudinal T-shaped connecting shaft 42. The connecting shaft 42 is inserted with a roller 43. The roller 43 is inserted into the conveying groove 5. One end of the connecting shaft 42 is fixed on the link of the conveying chain belt. The conveying chain belt is connected with a driving wheel. The driving wheel is fixedly provided with the rotating shaft of a rotary motor. The rotary motor is fixed in the blow washing box.

[0031] The air blowing port 441 is linearly and vertically uniformly distributed on the blow pipe 44. The upper end of the blow pipe 44 is inserted with a plug 48. The both ends of the hinged shaft 45 are inserted and fixed in the plug 48. The blow pipe 44 and the hanger seat 41 are hingedly connected with the support spacer 47 inserted on the hinged shaft 45. One end of the support spacer 47 is inserted and fixed on the hanger seat 41.

[0032] The groove width of the positioning guide groove 681 on the support plate 68 is equal to the outer diameter of the air inlet pipe 612. The vertical distance from the air inlet pipe 612 to the upper end surface of the support plate 68 is less than the length of the air inlet pipe 61 inserted into the blow pipe 44. The length of the positioning guide groove 681 is greater than the length of the air inlet pipe 61 inserted into the blow pipe 44. Therefore, when the air inlet pipe 61 is inserted into the blow pipe 44, the air inlet pipe 612 will be separated from the support plate 68. The positioning guide groove 681 can limit the vertical arrangement of the air inlet pipe 61, and realize the positioning between the blow pipe 44 and the air inlet pipe 61.

[0033] The end of the air inlet pipe 612 is fixedly connected with an air pipe quick connector 613. The air pipe quick connector 613 is inserted with a plastic air pipe. The connection of the plastic air pipe is facilitated.

[0034] The both sides of the lifting cylinder 611 are provided with triangular reinforcing plates 614. The reinforcing plates 614 are fixed on the lifting seat 65.

[0035] The outer diameter of the air inlet pipe 61 is equal to the inner diameter of the blow pipe 44. A plurality of mounting holes are formed on the connecting plate 682. The mounting holes are inserted with bolts. The bolts are screw-connected and fixed on the water leakage pedal 2. A plurality of water leakage grooves are formed on the water leakage pedal 2 and are communicated with the water collecting groove 1.

[0036] Working principle: the automatic blowing and drying device of the steam turbine blade, the structure of the automatic blowing and drying device is as Figure 1 described, a plurality of blade hangers 4 are connected on the conveying channel 5 of the device, and the blade hangers 4 move circularly along the conveying channel 5 under the action of the conveying chain; the blade hangers 4 can hang the steam turbine blade, and then the steam turbine blade also enters the cleaning water tank 3 for cleaning, and then moves to the water blowing mechanism 6 for automatic water blowing;

[0037] The specific hanging mode of the steam turbine blade is as follows:

[0038] The hand-pulling tensioning assembly 46 is used to realize the disengagement of the tensioning assembly 46 from the hanger seat 41, then the water blowing pipe 44 is rotated, the opening of the insertion buckle groove 411 of the hanger seat 41 is realized, then the blade root is inserted into the insertion buckle groove 411 of the hanger seat 41, the water blowing pipe 44 is moved, and the tensioning assembly 46 is pressed and held on the blade root to prevent the blade from being separated from the hanger seat 41;

[0039] The specific water blowing process of the steam turbine blade is as follows:

[0040] When the blade hanger 4 moves to the position directly above the water blowing mechanism 6, the lifting cylinder 611 on the water blowing mechanism 6 is driven to drive the air inlet plug pipe 61 to be inserted into the water blowing pipe 44 of the blade hanger 4, then the air inlet plug pipe 61 is ventilated, the air outlet 441 of the water blowing pipe 44 can blow air to the surface of the steam turbine blade, then the swing motor 67 is started, through the cam connecting rod structure, the water blowing pipe 44 can be rotated forward and backward around the hinge shaft 45, so that the airflow can blow to all parts of the surface of the steam turbine blade.

[0041] The embodiments are used to illustrate the present application, but not to limit the present application. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the present application, therefore the protection scope of the present application should be subject to the claims of the present application.

Claims

1. A steam turbine blade automatic blow washing and drying device, comprising a blow washing box, the blow washing box comprising a bottom water collecting groove (1) and an upper horizontal annular arranged conveying groove (5), the upper side of the water collecting groove (1) is fixedly connected with a water leakage pedal (2), characterized in that: The water leakage pedal (2) is fixed with a cleaning water tank (3) on one side, and a cleaning groove (51) in the shape of an isosceles trapezoid is formed on the upper side of the conveying groove (5) above the cleaning water tank (3); a plurality of groups of blade hangers (4) are inserted on the conveying groove (5), the blade hangers (4) are connected to a horizontal annular conveying chain belt, and the conveying chain belt is arranged in the conveying groove (5); a plurality of groups of water blowing mechanisms (6) opposite to the blade hangers (4) are fixed on the water leakage pedal (2) on one side of the cleaning water tank (3); The blade hanger (4) comprises a T-shaped hanger seat (41), a plug buckle groove (411) is formed at the bottom of the hanger seat (41), vertical water blowing pipes (44) are arranged on the two sides of the hanger seat (41), the upper ends of the water blowing pipes (44) are respectively fixed on the two ends of a hinge shaft (45), the hinge shaft (45) is inserted into the upper end of the hanger seat (41), a limiting tension assembly (46) opposite to the plug buckle groove (411) is inserted into the upper part of the water blowing pipe (44), the limiting tension assembly (46) comprises a transverse T-shaped tension rod (461), a spherical pressure head (462) is fixed on the end of the tension rod (461) penetrating through the water blowing pipe (44), a check ring (463) is inserted and fixed on the tension rod (461) close to the pressure head (462), a tension spring (464) is inserted on the tension rod (461), the two ends of the tension spring (464) are respectively pressed against the check ring (463) and the water blowing pipe (44), a plurality of obliquely arranged and horn-shaped air blowing mouths (441) are formed on the opposite outer walls of the middle and lower parts of the water blowing pipe (44); The water blowing mechanism (6) comprises a "n" shaped air inlet pipe (61), a vertical connecting rod (62) is inserted and fixed in the middle part of the air inlet pipe (61), a T-shaped positioning pin (66) is inserted into the lower end of the connecting rod (62), the positioning pin (66) is inserted and fixed in a cam (64), an L-shaped lifting seat (65) is arranged below the cam (64), a vertical motor mounting plate (651) is formed on the lifting seat (65), a horizontal swing motor (67) is fixed on the motor mounting plate (651), and the cam (64) is inserted and fixed on the rotating shaft of the swing motor (67); The upper ends of the air inlet pipe (61) are respectively inserted into the two water blowing pipes (44) of the blade hanger (4), a horizontal transverse air inlet pipe (612) is fixed on one side of the air inlet pipe (61), a vertical support plate (68) is arranged below the air inlet pipe (612), a vertical positioning guide groove (681) opposite to the air inlet pipe (612) is formed on the upper end surface of the support plate (68), vertical guide rails (69) are fixed on the side walls of the support plate (68) on the two sides of the positioning guide groove (681), a sliding block (610) is inserted into the guide rail (69), the sliding block (610) is fixed on the side wall of the lifting seat (65), a horizontal connecting plate (682) is formed on the lower end of the support plate (68), a vertical lifting cylinder (611) is fixed on the connecting plate (682), and the piston rod of the lifting cylinder (611) is fixed on the lifting seat (65).

2. An apparatus for automatic washing and drying of turbine blades as claimed in claim 1, wherein: The upper end of the hanging seat (41) is inserted with a longitudinal T-shaped connecting shaft (42), a roller (43) is inserted on the connecting shaft (42), the roller (43) is inserted in the conveying channel (5), one end of the connecting shaft (42) is fixed on the chain link of the conveying chain belt, a driving wheel is connected on the conveying chain belt, a rotating shaft of a rotary motor is fixed on the driving wheel, and the rotary motor is fixed in the blow washing box.

3. An apparatus for automatic washing and drying of turbine blades as claimed in claim 1, wherein: The blowing port (441) is linearly and vertically uniformly distributed on the water blowing pipe (44), the upper end of the water blowing pipe (44) is inserted with a plug (48), both ends of the hinged shaft (45) are inserted and fixed in the plug (48), a supporting sleeve (47) is inserted on the hinged shaft (45) between the water blowing pipe (44) and the hanging seat (41), and one end of the supporting sleeve (47) is inserted and fixed on the hanging seat (41).

4. An apparatus for automatic washing and drying of turbine blades as claimed in claim 1, wherein: The insertion buckle groove (411) on the hanging seat (41) is conical, the insertion buckle groove (411) penetrates through the lower bottom surface and one side wall of the hanging seat (41), a spherical positioning recess (412) is formed on the other side wall of the hanging seat (41), a plurality of clamping grooves are formed on the opposite inner walls of the insertion buckle groove (411), The pressing head (462) of the limiting and tensioning assembly (46) on one side of the hanging seat (41) is inserted in the insertion buckle groove (411) of the hanging seat (41), and the pressing head (462) of the limiting and tensioning assembly (46) on the other side of the hanging seat (41) is inserted and pressed against the positioning recess (412) of the hanging seat (41).

5. An apparatus for automatic washing and drying of turbine blades as claimed in claim 1, wherein: The width of the positioning guide groove (681) on the supporting plate (68) is equal to the outer diameter of the air inlet pipe (612), the vertical distance from the air inlet pipe (612) to the upper end surface of the supporting plate (68) is less than the length of the air inlet pipe (61) inserted in the water blowing pipe (44), and the length of the positioning guide groove (681) is greater than the length of the air inlet pipe (61) inserted in the water blowing pipe (44).

6. An automatic blow drying device for a steam turbine blade according to claim 5, characterized in that: The distal end of the air inlet pipe (612) is fixedly connected with an air pipe quick connector (613), and the air pipe quick connector (613) is inserted with a plastic air pipe; The two sides of the lifting air cylinder (611) are provided with triangular reinforcing plates (614), and the reinforcing plates (614) are fixed on the lifting seat (65).

7. An automatic blow drying device for a steam turbine blade according to claim 6, characterized in that: The outer diameter of the air inlet pipe (61) is equal to the inner diameter of the water blowing pipe (44), a plurality of mounting holes are formed on the connecting plate (682), bolts are inserted in the mounting holes, and the bolts are screw-connected and fixed on the water leakage pedal (2), and a plurality of water leakage grooves are formed on the water leakage pedal (2) and are in communication with the water collecting groove (1).

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