CN215595662U - Device for preventing water erosion of last-stage blade of steam turbine by high-speed laser cladding stellite - Google Patents
Device for preventing water erosion of last-stage blade of steam turbine by high-speed laser cladding stellite Download PDFInfo
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- CN215595662U CN215595662U CN202121546685.1U CN202121546685U CN215595662U CN 215595662 U CN215595662 U CN 215595662U CN 202121546685 U CN202121546685 U CN 202121546685U CN 215595662 U CN215595662 U CN 215595662U
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Abstract
The utility model discloses a device for preventing water erosion of a last-stage blade of a steam turbine by high-speed laser cladding stellite, which relates to the technical field of high-speed laser cladding. The device for preventing the turbine last-stage blade from water erosion by the high-speed laser cladding stellite has the advantages that the high-speed laser cladding stellite is small in heat input, the blade cannot deform completely, the cladding coating is high in smoothness, the blade can be installed and used without being processed, meanwhile, the cladded blade can be cooled, the use efficiency of the device is improved, and the transmission quality of a laser beam of a high-speed laser cladding machine can be improved through the cooling piece.
Description
Technical Field
The utility model relates to the technical field of high-speed laser cladding, in particular to a device for preventing water erosion of a last-stage blade of a steam turbine by high-speed laser cladding stellite.
Background
The last stage blade of the steam turbine is inevitably corroded by water after being used for a long time, in order to avoid the corrosion of the blade and ensure that the blade is not replaced and maintained in the designed service life of a rotor, after the blade is processed, high-speed laser cladding is carried out on a position which is easy to corrode by water, and a layer of water corrosion resistant alloy is clad.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Aiming at the defects of the prior art, the utility model provides a device for preventing water erosion of a last-stage blade of a steam turbine by high-speed laser cladding stellite, which solves the problems that the existing laser cladding machine needs to dig a pit first when in use, so that the blade is easy to deform and rough and needs to be reprocessed, and the laser beam transmission quality is unstable due to the fact that the device generates large heat when the laser cladding machine is used.
(II) technical scheme
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a high-speed laser cladding stellite is used for preventing device that steam turbine last stage blade water corroded, includes high-speed laser cladding machine organism, the front end of high-speed laser cladding machine organism is installed and is located the blade top and carry out prosthetic cladding head to the blade, the one end that the high-speed laser cladding machine organism kept away from the cladding head is installed the arm that the high-speed laser cladding machine organism removed, the arm is close to one side of blade and is installed the cooling piece that carries out the cooling to the blade after cladding.
Through the technical scheme, the heat input of high-speed laser cladding is small, the blade can not deform completely, the cladding coating has high finish degree, the blade can be installed and used without processing, the cladding blade can be cooled, the service efficiency of the device is improved, and the transmission quality of laser beams of the high-speed laser cladding machine can be improved through the cooling piece.
Preferably, the cooling piece includes the drive box, the bar groove has been seted up to the preceding terminal surface of drive box, the heat dissipation fan is installed to one side that the bar groove is close to the blade, the connecting block is installed to the rear end face of heat dissipation fan, and the connecting block runs through the inside that the bar groove extends to the drive box, the driving groove has been seted up to the inside of drive box, the bar groove link up with the driving groove, the internally mounted of driving groove has the driving piece of drive connecting block reciprocating motion in order to enlarge cooling range.
Through above-mentioned technical scheme, do reciprocating motion through the connecting block in bar inslot portion and can drive the heat dissipation fan and do reciprocating motion, can enlarge the cooling range, can cool down to the blade after cladding through the effect of heat dissipation fan.
Preferably, the driving part comprises a stepping motor, a first connecting rod is hinged to the front end face of the stepping motor, a second connecting rod is hinged to one end, away from the stepping motor, of the first connecting rod, a gear is hinged to one end, away from the first connecting rod, of the second connecting rod, a sliding block is movably connected to one side, away from the second connecting rod, of the gear, the gear is connected with the sliding block through a roller bearing, a sliding groove is formed in the outer side of the sliding block, the sliding block is connected with the driving box through the sliding groove, a first rack located at the bottom end of the inner wall of the driving box is installed below the gear, a second rack is installed above the gear, the second rack and the connecting block are of an integrated structure, the gear is meshed with the first rack, the gear is meshed with the second rack, a moving block is fixedly installed on one side, close to the inner wall of the driving box, of the second rack, and the moving block is connected with the driving box through a sliding way, the second rack and the connecting block are of an integrated structure, and the connecting block is connected with the heat dissipation fan through a screw.
Through the technical scheme, the connecting rod can be driven to rotate under the action of the stepping motor, the connecting rod can be driven to rotate under the action of the connecting rod, the connecting rod can be driven to move through the rotation of the connecting rod, the gear can rotate in the moving process under the action of the rack, the rack and the connecting block can be driven to move through the rotation of the gear, and the limiting effect can be achieved on the movement of the rack through the matching of the moving block and the slide way.
Preferably, the outer surface of the heat dissipation fan is connected with a protective cover through a screw, and the outer surface of the protective cover is provided with a high-temperature-resistant coating.
Through above-mentioned technical scheme, through the cooperation of heat dissipation fan and protection casing, can make the life of heat dissipation fan effectively improve.
Preferably, the side of the driving box far away from the blade is connected with the mechanical arm through a connecting piece.
Through the technical scheme, the driving box is convenient to mount and dismount under the action of the connecting piece, and the driving box is convenient to replace and overhaul.
Preferably, the connecting piece includes two arc mounting panels, one of them arc mounting panel and arm structure as an organic whole, another the arc mounting panel passes through welded connection with the drive box, the through-hole has all been seted up to the both sides of arc mounting panel, and the inside of every through-hole all is pegged graft and has been had the bolt, there is the spacing ring that is located the arc mounting panel outside in the outside of bolt through threaded connection, the internal surface of arc mounting panel is connected with the rubber antiskid ribbed tile through the grafted rubber.
Through the technical scheme, through the cooperation of bolt and spacing ring, the fixed connection of drive box and arm of can being convenient for can improve the leakproofness that two arc mounting panels and the device are connected through the effect of rubber antiskid sheets.
Preferably, one end of the connecting block, far away from the second rack, is fixedly provided with an electric push rod, the electric push rod is in screw connection with the connecting block push rod, and one end of the electric push rod, far away from the connecting block, is in screw connection with the inner wall of the driving box.
Through above-mentioned technical scheme, through the cooperation of electric putter and connecting block, can play the impetus to the connecting block, the removal of the connecting block of being convenient for, and then the position of the fan that dispels the heat of being convenient for adjust.
(III) advantageous effects
The utility model provides a device for preventing water erosion of a last-stage blade of a steam turbine by high-speed laser cladding stellite. The method has the following beneficial effects:
(1) the high-speed laser cladding stellite alloy is used for preventing the water erosion of the last-stage blade of the steam turbine, and the high-speed laser cladding machine is used for the blade, so that the heat input of high-speed laser cladding is small, and the blade cannot deform completely.
(2) The high-speed laser cladding stellite alloy is used for preventing the water erosion of the last-stage blade of the steam turbine, and the blade is used by the high-speed laser cladding machine, so that the cladding coating has high smoothness, and can be installed and used without processing the blade.
(3) The high-speed laser cladding stellite alloy is used for preventing the water erosion of the last-stage blade of the steam turbine, and the blade is metallurgically bonded through the coating, so that the blade cannot be peeled off after long-term service.
(4) The high-speed laser cladding stellite alloy is used for preventing the water erosion of the last-stage blade of the steam turbine, and through the action of the high-speed laser cladding machine, a cladding coating is thin, generally 0.3mm, is very uniform, and cannot cause the unbalance of a rotor.
(5) The device for preventing the water erosion of the last-stage blade of the steam turbine by high-speed laser cladding stellite alloy adopts the stellite 6 alloy, and ensures that the service life of the blade exceeds the design life of the rotor due to the good high-temperature water erosion resistance of the stellite 6 coating.
(6) The device for preventing the turbine last-stage blade from water erosion by the high-speed laser cladding stellite alloy adopts the high-speed laser cladding technology, can realize flow line production, has standardized program and high blade treatment efficiency.
(7) This high-speed laser cladding department taili alloy is used for preventing the device that steam turbine last stage blade water from corroding, and the fixed connection of arm and drive box is convenient for in the cooperation of two arc mounting panels, and the fixed locking of two arc mounting panels of being convenient for through the cooperation of bolt and spacing ring, the drive box of being convenient for is overhauld with the dismantlement, the drive box of being convenient for.
(8) The device for preventing the water erosion of the last-stage blade of the steam turbine by the high-speed laser cladding stellite alloy, the first connecting rod can be driven to rotate under the action of the stepping motor, the second connecting rod can be driven to rotate under the action of the first connecting rod, the gear can be driven to move under the action of the second connecting rod, the gear can rotate in the moving process under the action of the first rack, the second rack and the connecting block can be driven to move through the rotation of the gear, the movement of the second rack can be limited by the matching of the moving block and the slideway, the movement of the connecting block can drive the movement of the heat radiation fan, the cooling range can be expanded by the reciprocating movement of the heat radiation fan, meanwhile, in the cooling process, redundant stellite powder can be blown off, the utilization rate of the device is effectively improved, and the transmission quality of laser beams of the high-speed laser cladding machine can be improved through the cooling piece.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic top view of the present invention;
fig. 4 is a schematic sectional structure view of the drive cassette of the present invention.
In the figure: 1. a high-speed laser cladding machine body; 2. cladding head; 3. a mechanical arm; 4. an arc-shaped mounting plate; 5. a bolt; 6. a limiting ring; 7. a drive cartridge; 8. a strip-shaped groove; 9. a heat dissipation fan; 10. a drive slot; 11. a stepping motor; 12. a first connecting rod; 13. a second connecting rod; 14. a gear; 15. a slider; 16. a chute; 17. a second rack; 18. a slideway; 19. connecting blocks; 20. a first rack; 21. an electric push rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, the present invention provides a technical solution: a high-speed laser cladding stellite alloy is used for preventing the water erosion of the last-stage blade of the steam turbine, including the high-speed laser cladding machine organism 1, and the high-speed laser cladding machine organism 1 adopts stellite 6 alloy to clad, the front end of the high-speed laser cladding machine organism 1 is fitted with and located above the blade and carries on the renovation head 2 to the blade, the end far away from cladding head 2 of the high-speed laser cladding machine organism 1 is fitted with the mechanical arm 3 driving the high-speed laser cladding machine organism 1 to move, one side of the mechanical arm 3 close to blade is fitted with the cooling piece to cool down the blade after cladding, has raised the service efficiency of the apparatus, can raise the transmission quality of the laser beam of the high-speed laser cladding machine through the cooling piece at the same time;
as shown in fig. 2 and 4, the cooling member includes a driving box 7, a strip-shaped groove 8 is formed in the front end surface of the driving box 7, a heat dissipation fan 9 is installed on one side, close to the blade, of the strip-shaped groove 8, a connecting block 19 is installed on the rear end surface of the heat dissipation fan 9, the connecting block 19 penetrates through the strip-shaped groove 8 and extends into the driving box 7, a driving groove 10 is formed in the driving box 7, the strip-shaped groove 8 is communicated with the driving groove 10, a driving member for driving the connecting block 19 to reciprocate in order to expand the cooling range is installed in the driving groove 10, the connecting block 19 reciprocates in the strip-shaped groove 8 to drive the heat dissipation fan 9 to reciprocate, the cooling range can be expanded, and the cladded blade can be cooled under the action of the heat dissipation fan 9;
as shown in fig. 4, the driving member includes a stepping motor 11, a first connecting rod 12 is hinged on the front end surface of the stepping motor 11, a second connecting rod 13 is hinged on one end of the first connecting rod 12 away from the stepping motor 11, a gear 14 is hinged on one end of the second connecting rod 13 away from the first connecting rod 12, a slider 15 is movably connected on one side of the gear 14 away from the second connecting rod 13, the gear 14 is connected with the slider 15 through a roller bearing, a chute 16 is arranged on the outer side of the slider 15, the slider 15 is connected with the driving box 7 through the chute 16, a first rack 20 located at the bottom end of the inner wall of the driving box 7 is arranged below the gear 14, a second rack 17 is arranged above the gear 14, the second rack 17 and the connecting block 19 are of an integrated structure, the gear 14 is meshed with the first rack 20, the gear 14 is meshed with the second rack 17, and a moving block is fixedly arranged on one side of the second rack 17 close to the inner wall of the driving box 7, the moving block is connected with the driving box 7 through a slide way 18, the second rack 17 and the connecting block 19 are of an integrated structure, the connecting block 19 is connected with the heat dissipation fan 9 through a screw, the first connecting rod 12 can be driven to rotate under the action of the stepping motor 11, the second connecting rod 13 can be driven to rotate under the action of the first connecting rod 12, the second connecting rod 13 can drive the gear 14 to move under the action of the second connecting rod 13, the gear 14 can rotate in the moving process under the action of the first rack 20, the second rack 17 and the connecting block 19 can be driven to move under the action of the gear 14, and the moving block can limit the movement of the second rack 17 through the matching of the moving block and the slide way 18;
as shown in fig. 2, the outer surface of the heat dissipation fan 9 is connected with a protective cover through a screw, and the outer surface of the protective cover is provided with a high temperature resistant coating, so that the service life of the heat dissipation fan 9 can be effectively prolonged through the matching of the heat dissipation fan 9 and the protective cover;
as shown in fig. 3, one side of the driving box 7, which is far away from the blade, is connected with the mechanical arm 3 through a connecting piece, so that the driving box 7 is convenient to mount and dismount through the action of the connecting piece, and the driving box 7 is convenient to replace and overhaul;
as shown in fig. 3, the connecting piece comprises two arc-shaped mounting plates 4, one of the arc-shaped mounting plates 4 and the mechanical arm 3 is of an integrated structure, the other arc-shaped mounting plate 4 is connected with the driving box 7 through welding, through holes are formed in both sides of the arc-shaped mounting plate 4, a bolt 5 is inserted into each through hole, the outer side of each bolt 5 is connected with a limiting ring 6 positioned on the outer side of the arc-shaped mounting plate 4 through threads, the inner surface of the arc-shaped mounting plate 4 is connected with a rubber anti-slip sheet through graft glue, the driving box 7 and the mechanical arm 3 can be conveniently and fixedly connected through the matching of the bolts 5 and the limiting rings 6, and the sealing performance of the connection of the two arc-shaped mounting plates 4 and the device can be improved through the action of the rubber anti-slip sheets;
as shown in fig. 4, one end of the connecting block 19, which is far away from the second rack 17, is fixedly provided with an electric push rod 21, the electric push rod 21 is in screw connection with the connecting block 19 push rod, one end of the electric push rod 21, which is far away from the connecting block 19, is in screw connection with the inner wall of the driving box 7, and the electric push rod 21 and the connecting block 19 are matched to push the connecting block 19, so that the connecting block 19 can be moved conveniently, and further the position of the heat dissipation fan 9 can be adjusted conveniently.
When the mechanical arm is used, a power supply is switched on, a switch is switched on, one arc-shaped mounting plate 4 is fixedly connected with the mechanical arm 3, the other arc-shaped mounting plate 4 can be attached to the arc-shaped mounting plate 4, the four bolts 5 penetrate through the two arc-shaped mounting plates 4 through the through holes, then the limiting ring 6 can be rotated under the action of threads, the limiting ring 6 is sleeved on the outer side of each bolt 5, the two arc-shaped mounting plates 4 can be limited and locked under the action of the limiting ring 6, and the driving box 7 can be fixedly connected with the mechanical arm 3;
then the stepping motor 11 is opened, the first connecting rod 12 can be driven to rotate through the action of the stepping motor 11, the second connecting rod 13 can be driven to rotate through the rotation of the first connecting rod 12, the gear 14 can be driven to move through the rotation of the second connecting rod 13, the guide limiting effect can be realized on the movement of the gear 14 through the matching of the sliding block 15 and the sliding groove 16, then the first rack 20 is meshed with the gear 14, the gear 14 can rotate in the movement process after being contacted with the first rack 20, meanwhile, the second rack 17 is meshed with the gear 14, the rotation of the gear 14 can drive the second rack 17 to move, the guide effect can be realized on the movement of the second rack 17 through the action of the sliding groove 18, the movement of the second rack 17 can drive the connecting block 19 to move in the strip-shaped groove 8, the movement of the connecting block 19 can drive the movement of the heat dissipation fan 9, and the cooling range can be expanded through the reciprocating movement of the heat dissipation fan 9, meanwhile, in the cooling process, redundant stellite powder can be blown off, the transmission quality of laser beams of the high-speed laser cladding machine can be improved through the cooling piece, the utilization rate of the device is effectively improved, the high-speed laser cladding stellite is used for preventing the water erosion of the last-stage blade of the steam turbine in the using process, and the content which is not described in detail in the specification belongs to the prior art which is known by professional technicians in the field.
In conclusion, the device for preventing the water erosion of the last-stage blade of the steam turbine by high-speed laser cladding stellite is convenient for the fixed connection of the mechanical arm 3 and the driving box 7 through the matching of the two arc-shaped mounting plates 4 in the use process, is convenient for the fixed locking of the two arc-shaped mounting plates 4 through the matching of the bolt 5 and the limiting ring 6, is convenient for the installation and the disassembly of the driving box 7, is convenient for the maintenance of the driving box 7, can drive the first connecting rod 12 to rotate through the action of the stepping motor 11, can drive the second connecting rod 13 to rotate through the rotation of the first connecting rod 12, can drive the gear 14 to move through the rotation of the second connecting rod 13, can enable the gear 14 to rotate in the moving process through the action of the first rack 20, can drive the second rack 17 and the connecting block 19 to move through the rotation of the gear 14, and can play a limiting role on the movement of the second rack 17 through the matching of the moving block and the slideway 18, the movement of the heat dissipation fan 9 can be driven by the movement of the connecting block 19, the cooling range can be enlarged by the reciprocating movement of the heat dissipation fan 9, and meanwhile, redundant stellite powder can be blown off in the cooling process, so that the utilization rate of the device is effectively improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a high-speed laser cladding stellite is used for preventing device of steam turbine last stage blade water erosion, includes high-speed laser cladding machine organism (1), its characterized in that: the high-speed laser cladding machine is characterized in that a cladding head (2) which is located above a blade and used for repairing the blade is installed at the front end of the high-speed laser cladding machine body (1), one end, away from the cladding head (2), of the high-speed laser cladding machine body (1) is provided with a mechanical arm (3) for driving the high-speed laser cladding machine body (1) to move, and one side, close to the blade, of the mechanical arm (3) is provided with a cooling piece for cooling the blade after cladding.
2. The apparatus of claim 1 for preventing turbine last stage blade water erosion by high speed laser cladding stellite, wherein: the cooling piece includes drive box (7), bar groove (8) have been seted up to the preceding terminal surface of drive box (7), bar groove (8) are close to one side of blade and install heat dissipation fan (9), connecting block (19) are installed to the rear end face of heat dissipation fan (9), and connecting block (19) run through bar groove (8) and extend to the inside of drive box (7), drive groove (10) have been seted up to the inside of drive box (7), bar groove (8) link up with drive groove (10), the internally mounted of drive groove (10) has drive connecting block (19) reciprocating motion to enlarge the driving piece of cooling range.
3. The apparatus for preventing turbine last stage blade water erosion by high speed laser cladding stellite alloy according to claim 2, wherein: the driving piece comprises a stepping motor (11), a first connecting rod (12) is hinged to the front end face of the stepping motor (11), a second connecting rod (13) is hinged to one end, away from the stepping motor (11), of the first connecting rod (12), a gear (14) is hinged to one end, away from the first connecting rod (12), of the second connecting rod (13), a sliding block (15) is movably connected to one side, away from the second connecting rod (13), of the gear (14), the gear (14) is connected with the sliding block (15) through a roller bearing, a sliding groove (16) is formed in the outer side of the sliding block (15), the sliding block (15) is connected with a driving box (7) through the sliding groove (16), a first rack (20) located at the bottom end of the inner wall of the driving box (7) is installed below the gear (14), a second rack (17) is installed above the gear (14), the second rack (17) and the connecting block (19) are of an integrated structure, the gear (14) is meshed with the first rack (20), the gear (14) is meshed with the second rack (17), a moving block is fixedly mounted on one side, close to the inner wall of the driving box (7), of the second rack (17), the moving block is connected with the driving box (7) through a slide way (18), the second rack (17) and the connecting block (19) are of an integrated structure, and the connecting block (19) is connected with the heat dissipation fan (9) through screws.
4. The apparatus for preventing turbine last stage blade water erosion by high speed laser cladding stellite alloy according to claim 2, wherein: the outer surface of the heat dissipation fan (9) is connected with a protective cover through a screw, and the outer surface of the protective cover is provided with a high-temperature-resistant coating.
5. The apparatus of claim 3 for preventing turbine last stage blade water erosion by high speed laser cladding stellite, wherein: one side of the driving box (7) far away from the blade is connected with the mechanical arm (3) through a connecting piece.
6. The apparatus of claim 5 for preventing turbine last stage blade water erosion by high speed laser cladding stellite, wherein: the connecting piece includes two arc mounting panels (4), one of them arc mounting panel (4) and arm (3) structure as an organic whole, another arc mounting panel (4) pass through welded connection with drive box (7), the through-hole has all been seted up to the both sides of arc mounting panel (4), and the inside of every through-hole all pegs graft and have bolt (5), there is spacing ring (6) that are located arc mounting panel (4) outside in the outside of bolt (5) through threaded connection, the internal surface of arc mounting panel (4) is connected with the rubber antiskid ribbed tile through grafting glue.
7. The apparatus of claim 6 for preventing turbine last stage blade water erosion by high speed laser cladding stellite, wherein: one end fixed mounting that No. two racks (17) were kept away from in connecting block (19) has electric putter (21), electric putter (21) and connecting block (19) push rod screw connection, electric putter (21) are kept away from the one end of connecting block (19) and are passed through screw connection with the inner wall of drive box (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121546685.1U CN215595662U (en) | 2021-07-08 | 2021-07-08 | Device for preventing water erosion of last-stage blade of steam turbine by high-speed laser cladding stellite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121546685.1U CN215595662U (en) | 2021-07-08 | 2021-07-08 | Device for preventing water erosion of last-stage blade of steam turbine by high-speed laser cladding stellite |
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| Publication Number | Publication Date |
|---|---|
| CN215595662U true CN215595662U (en) | 2022-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121546685.1U Active CN215595662U (en) | 2021-07-08 | 2021-07-08 | Device for preventing water erosion of last-stage blade of steam turbine by high-speed laser cladding stellite |
Country Status (1)
| Country | Link |
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| CN (1) | CN215595662U (en) |
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2021
- 2021-07-08 CN CN202121546685.1U patent/CN215595662U/en active Active
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