CN115992336A - Surface treatment method of large-caliber flange for wind power - Google Patents
Surface treatment method of large-caliber flange for wind power Download PDFInfo
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- CN115992336A CN115992336A CN202310279976.6A CN202310279976A CN115992336A CN 115992336 A CN115992336 A CN 115992336A CN 202310279976 A CN202310279976 A CN 202310279976A CN 115992336 A CN115992336 A CN 115992336A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention discloses a surface treatment method of a large-caliber flange for wind power, which comprises the steps of equipment setting, flange mounting, machine testing, surface treatment, drying, other operation, shutdown unloading and the like. According to the invention, the wind power flange with a large caliber is vertically supported by the supporting roller, so that the driving shaft drives the wind power flange to rotate, and the gradual soaking-lifting high-frequency intermittent surface treatment method is realized; the method is easy to control, the consumption and occupied space of the treatment liquid are greatly reduced, the operation difficulty of the wind power flange is reduced, and the uniformity of the surface treatment of each section of the obtained wind power flange is good.
Description
Technical Field
The invention relates to the technical field of flange surface treatment, in particular to a surface treatment method of a large-caliber flange for wind power.
Background
The wind power flange is a component special for the wind power generator set and is a structural member for connecting the tower barrel with the hub and blades, and the quality of the wind power flange directly influences whether the wind power generator set runs reliably or not because the running environment of the wind power generator set is always subjected to severe weather and climate such as high temperature, high cold, high humidity, wind sand, salt corrosion and the like. Therefore, the wind power flange needs to be subjected to corrosion prevention treatment besides heat treatment to ensure the quality of the wind power flange.
The surface treatment of the flange in the existing workshop comprises the treatment methods of electrogalvanizing, hot galvanizing, blackening, spray painting or plastic spraying, anticorrosive paste smearing, external protective tape winding, anticorrosive tape winding and the like.
Electrogalvanizing: the surface treatment technology is to plate a layer of zinc on the surface of metal, alloy or other materials to play roles of beautiful appearance, rust prevention and the like; hot galvanizing: immersing the derusted steel part into molten zinc liquid at about 500 ℃ to enable a zinc layer to be attached to the surface of the steel part, thereby achieving the aim of corrosion prevention; blackening: the principle is that a layer of oxide film is generated on the surface of the metal to isolate air, thereby achieving the aim of rust prevention; painting or spraying plastics: the method is to spray paint and spray plastic on the surface of the material to perform rust prevention measures; and (3) smearing anti-corrosion paste: before installing the flange, cutting the flange anti-corrosion paste into narrow strips at the width of a flange gap, and then directly filling the narrow strips into the flange gap by hands, wherein the narrow strips are compressed during filling; winding an outer protective tape and an anti-corrosion tape: it means that no axial displacement is wound on the upper part of the flange clearance for a whole circle of anti-corrosion adhesive tape, 1 circle of external protection belt is wound outside the anti-corrosion adhesive tape, and the anti-corrosion adhesive tape with the width of 2-3mm is left on two sides of the external belt during winding and is not covered.
However, unlike small-caliber flanges, wind power flanges generally have the structural characteristic of large cross-section size, wind power flanges are generally lifted by a crane and then placed into a treatment tank, and if an anti-corrosion paste is required to be smeared or an external protection belt and an anti-corrosion adhesive tape are required to be wound before installation, the wind power flanges are required to be supported by a special support frame and then operated section by section along the circumferential direction, so that the large area of the treatment tank is generally required, the depth and the consumption of the treatment liquid are large, and the operation is very inconvenient when the flanges are lifted, rotated or treated, so that improvement is needed.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a surface treatment method of a large-caliber flange for wind power.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a surface treatment method of a large-caliber flange for wind power comprises the following steps:
1) Equipment setting:
according to the invention, the wind power flange is provided with the annular distributed flange holes, the surface treatment equipment comprises at least three support rollers arranged around the outer cambered surface of the wind power flange, wherein two support rollers are arranged at two sides lower than the height of the center of the wind power flange and used for supporting the gravity of the wind power flange, and the other support rollers are arranged at positions higher than the height of the center of the wind power flange and used for maintaining the wind power flange in a standing state, and the diameter of an circumscribed cylindrical surface tangent to all the support rollers is 0.5-1.5cm larger than the diameter of the wind power flange, so that the wind power flange can be conveniently placed in the wind power flange and can slide on the two support rollers at the bottom;
the two ends of the supporting roller are respectively connected with a portal frame in a penetrating way, the two ends of the supporting roller are provided with smooth shaft sections, the portal frame is provided with bearing holes for the smooth shaft sections to be connected in a penetrating way, and the smooth shaft sections are provided with end-capped nuts I, so that the supporting roller can rotate in a driven way;
a positioning rod is connected in the plurality of annularly distributed flange holes in a penetrating way, one end of the positioning rod is fixedly connected with a positioning cylinder, and one end of the positioning cylinder, which is far away from the connected positioning rod, is provided with a sliding groove for the movable sleeving of the other positioning rod, so that a plurality of wind power flanges can be connected together;
the outer wall of the positioning cylinder is connected with a supporting plate, one side of the supporting plate, which is far away from the positioning cylinder, is fixedly connected with a shaft sleeve, the shaft sleeve is movably sleeved with a driving shaft, one end of the driving shaft is connected with a low-speed motor, and the bottom of the low-speed motor is provided with a motor seat;
the middle part of the driving shaft is embedded with a flat key bar, the shaft sleeve is provided with a through hole for the driving shaft and the flat key bar to be in sliding fit, the position of the driving shaft, which is close to one end part of the flat key bar, is provided with a limiting shaft shoulder, one end of the driving shaft, which is far away from the low-speed motor, is provided with a blocking nut II, the blocking nut II can be replaced by a positioning ring with a moving mechanism and a locking mechanism, namely, after the wind power flange is installed in place, the positioning ring is movably sleeved on the driving shaft, so that the wind power flange can be limited and supported at the same time, and the limiting shaft shoulder and the blocking nut II are respectively positioned at two ends of the flat key bar and are used for limiting the wind power flange to slip;
a pit is excavated on the ground right below Ping Jiantiao, a hydraulic rod is arranged on the bottom wall of the pit, a treatment liquid groove is fixedly connected to the top end of the hydraulic rod, the treatment liquid groove cannot exceed the ground when being positioned at a low position, the installation process of a wind power flange is prevented from being blocked, and when the treatment liquid groove is lifted to a high position, the liquid level of the treatment liquid needs to submerge a section of circumference of the wind power flange positioned at the lowest position, so that the wind power flange can be driven to rotate through a driving shaft to realize section-by-section surface treatment;
2) And (3) flange installation:
the hydraulic rod is used for lowering the treatment liquid tank to the lowest position, a wind power flange is hung at the ground position at the front end of the supporting roller through the electric hoist, the wind power flange is erected, the positioning rod is inserted into the flange hole, the chute opening of the positioning cylinder faces one side of the low-speed motor, the end-capped nut II is screwed off, the wind power flange is pushed into the inscribed circle parts of the supporting rollers through the trolley, the low-speed motor is started to enable the driving shaft to rotate at a low speed, and when the flat key bar is aligned with the groove part of the through hole of the shaft sleeve, the shaft sleeve is automatically sleeved with the flat key bar under the thrust action of the trolley;
when the shaft sleeve is propped against the shoulder of the limiting shaft, the trolley is driven reversely to carry out the operation of the next wind power flange, the positioning cylinder of the wind power flange is aligned with the positioning rod of the previous wind power flange, the two wind power flanges are assembled into a whole, and after all the wind power flanges are installed in place, the end cap nut II is screwed;
3) And (3) testing:
starting a low-speed motor test machine, gradually adjusting the rotating speed of a driving shaft, and observing whether the outer cambered surface of the wind power flange and a supporting roller at the bottom rotate at a normal constant speed or not and whether the wind power flange has the phenomena of twisting and sliding or not when the driving shaft rotates;
4) Surface treatment:
after the test machine is qualified, the processing liquid tank is lifted to be positioned at the highest position by the hydraulic rod, and the rotating speed value of the driving shaft and the liquid level height in the processing liquid tank are determined according to the processing time required by the wind power flange, if the instantaneous soaking volume accounts for 20% of the total volume of the wind power flange, the rotating speed of the driving shaft is 1r/min, 60s is needed after the rotation, the soaking time of each section is 60.20% = 12s, the intermittent time is 48s, the total rotating number of the driving shaft can be calculated according to the determination of the total soaking time, the soaking-lifting frequency of the wind power flange is concerned, the optimal soaking parameters are controlled, so that the uniformity of the surface processing can be greatly improved, and the surface processing of the large-caliber flange can only need to be processed through multiple soaking-lifting treatments, for example, the intermittent time is too short, the surface of the part on the liquid level of the wind power flange can not be rotated and drained in the intermittent time, the multiple soaking-lifting effects of the uniform processing can not be achieved, but if the intermittent time is too long, the processed through the drying of the processing liquid is easy to form multiple layers, and the surface processing is not uniform;
therefore, the optimal parameters are finally determined that the instantaneous soaking volume accounts for 15-17% of the wind power flange, the rotating speed of the driving shaft is 2.2-3.5r/min, 17.1-27.3s are needed after the wind power flange is turned over, the soaking time of each section is 2.57-4.64s, the intermittent time is 14.53-23.75s, the total treatment time is 15-20min, and the surface treatment uniformity of each section of the wind power flange is better under the technological parameters, so that the inconvenience and the dangerousness of the conventional integral soaking-lifting operation are avoided, and the defect that the drip liquid cannot be uniformly treated in the conventional integral soaking-lifting process is avoided;
5) Drying and other operations:
after the surface treatment of the wind power flange is finished, the treatment liquid tank is lowered by the hydraulic rod to be positioned at the lowest position, and after the wind power flange is drained, the treatment liquid tank can be covered by the cover plate, and the wind power flange is blown and dried;
under the condition that the driving shaft rotates at a low speed, anticorrosive paste or chemical antirust protective agent can be smeared on the surface of the wind power flange;
under the condition that the driving shaft rotates at a low speed, the wind power flange is externally coated with the static film, so that the wind power flange is convenient to prevent dust and water in the transportation process after being packaged in whole circle;
the external protection belt and the anti-corrosion adhesive tape can be wound at the edges of the inner arc surface and the outer arc surface of the wind power flange and the end surface of the wind power flange under the condition that the driving shaft rotates at a low speed, and the part affecting the sealing surface can be cut off by a blade before the wind power generator is installed, so that the on-site anti-corrosion work is greatly reduced;
6) And (5) stopping and unloading:
closing the low-speed motor, tying hanging strips at the tops of the wind power flanges, enabling the hanging strips to penetrate through the inner frame of the portal frame to be connected with a crane or an electric hoist, unscrewing end-sealing nuts II, integrally supporting a plurality of wind power flanges by using a forklift, slowly moving the forklift and pulling the hanging strips, enabling the wind power flanges to be integrally separated from the inscribed circle area of the supporting roller, and hoisting the wind power flanges one by one to a transport vehicle, so that unloading is completed.
Preferably, the bottom of the portal frame is installed on the ground through the angle iron plates and the ground bolts, and in actual operation, a supporting cross rod can be further arranged between the two groups of portal frames, so that the structural stability is improved, and the supporting roller always keeps in a stable horizontal direction in the operation process.
Preferably, the inner wall of the shaft sleeve is smeared with lubricating oil, so that friction damage during axial sliding of the shaft sleeve is avoided.
Preferably, the end faces of the limiting shaft shoulder and the end cap nut II, which are opposite, are respectively provided with a gasket, so that impact damage during axial sliding of the shaft sleeve is avoided.
Preferably, the top of the groove wall of the treatment liquid groove is provided with a semicircular smooth groove for two supporting rollers positioned below to share the load for the supporting rollers.
Preferably, the treatment liquid tank is filled with zinc electroplating liquid, molten zinc liquid, black liquor, chemical antirust agent or paint liquid, so that the treatment such as electrogalvanizing, hot galvanizing, blackening treatment, antirust treatment, paint liquid dipping and the like can be finished, and the hydraulic rod can enable the treatment liquid to actively dip the wind power flange, so that the inconvenience of suspending the wind power flange is avoided.
Preferably, the front end of the trolley is provided with a vertical plate frame, the outer diameter of the vertical plate frame is smaller than the inner frame of the portal frame, the vertical plate frame is intersected with the end face of the wind power flange, a space for a driving shaft to pass through is reserved inside the vertical plate frame, the vertical plate frame is enabled to be in contact with the end face of the wind power flange, the wind power flange is horizontally pushed to an inscribed circle area of the supporting roller, after all the wind power flanges are horizontally moved in place one by one, the end-capped nuts II are screwed down again, and the sliding area of the wind power flange is located right above the processing liquid tank, so that batch processing is achieved.
Preferably, two forklift rods of the forklift are wrapped with rubber belts, the surface of the wind power flange is protected, friction force between the forklift rods and the wind power flange is increased, and the forklift rods can drive the bottom of the wind power flange to move.
It should be noted that, for avoiding ambiguity, the term "front end" in the present invention refers to the feed end of the wind power flange before surface treatment.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, a special surface treatment device is used for vertically supporting the large-caliber wind power flange through the supporting roller, the clutch mechanism of the positioning rod, the positioning cylinder, the supporting plate and the shaft sleeve is sleeved with the driving shaft, and the partial soaking treatment liquid tank is arranged below the wind power flange, so that the driving shaft drives the wind power flange to rotate, and the sectional soaking-lifting high-frequency intermittent surface treatment method is realized.
2. The high-frequency intermittent surface treatment method can control the effect of surface treatment only by the soaking liquid level, the rotating speed of the driving shaft and the total soaking time, and can easily control the intermittent frequency to obtain the optimal technological parameters, thereby improving the uniformity of large-caliber surface treatment.
3. The invention can carry out the same batch surface treatment on a plurality of wind power flanges with the same size, and reduce the quality difference of products.
4. The method greatly reduces the consumption and the occupied space of the treatment liquid, reduces the operation difficulty of the wind power flange, avoids the inconvenience and the danger of the conventional integral soaking-lifting operation, and avoids the defect that the conventional integral soaking-lifting process cannot uniformly treat the surface of each section of the obtained wind power flange due to the dripping problem, and the uniformity of the surface treatment of each section of the obtained wind power flange is good.
Drawings
FIG. 1 is a side view of a surface treatment device used in a surface treatment method of a large-caliber flange for wind power;
fig. 2 is a front view of a surface treatment device used in a surface treatment method of a large-caliber flange for wind power.
In the figure: wind power flange 1, flange hole 2, backing roll 3, portal frame 4, end cap nut I5, locating lever 6, positioning cylinder 7, backup pad 8, axle sleeve 9, drive shaft 10, low-speed motor 11, motor cabinet 12, flat key 13, spacing axle shoulder 14, end cap nut II15, pit 16, hydraulic rod 17, processing cistern 18.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In this embodiment, taking hot galvanizing treatment of the wind power flange 1 as an example, hot galvanizing process parameters are as follows: the instantaneous soaking volume accounts for 16% of the wind power flange 1, the rotating speed of the driving shaft 10 is 2.5r/min, 24s are needed after one turn, the soaking time of each stage is 3.84s, the intermittent time is 20.16s, and the total treatment time is 15min; the treatment liquid tank 18 is filled with molten zinc liquid at 600 ℃, the wind power flange 1 is driven to rotate by the driving shaft 10, so that the intermittent operation process of zinc dipping-lifting is realized, in the traditional lifting zinc dipping-lifting process, the large-caliber flange rotates obviously, the zinc dipping tank is required to be huge in volume and difficult to insulate heat, the volume of the treatment liquid tank 18 is only less than 15% of the volume of the traditional full-dipping zinc dipping tank through the design of the invention, the control condition of the zinc dipping process can be controlled simply through the rotating speed and the soaking volume, and the large crane in the traditional lifting flange dipping-lifting method is dangerous to use.
Referring to fig. 1-2, a surface treatment method of a large-caliber flange for wind power comprises the following steps:
1) And (3) flange installation:
lowering a treatment liquid tank 18 through a hydraulic rod 17 to enable the treatment liquid tank 18 to be located at the lowest position, hanging a wind power flange 1 at the ground position at the front end of a supporting roller 3 through an electric hoist, enabling the wind power flange 1 to stand up, inserting a positioning rod 6 into a flange hole 2, enabling a sliding groove of a positioning cylinder 7 to face one side of a low-speed motor 11, screwing off a blocking nut II15, pushing the wind power flange 1 into internal circle parts of a plurality of supporting rollers 3 by adopting a trolley, enabling the front end of the trolley to be provided with a vertical plate frame, enabling the outer diameter of the vertical plate frame to be smaller than the inner frame of a portal frame 4, enabling the vertical plate frame to intersect with the end face of the wind power flange 1 and to form a space for a driving shaft 10 to pass through, enabling the vertical plate frame to contact with the end face of the wind power flange 1, enabling the wind power flange 1 to be horizontally pushed to the internal circle parts of the supporting roller 3, screwing down blocking nuts II15 after all wind power flanges 1 are horizontally located one by one, enabling sliding parts of the wind power flange 1 to be located right above the treatment liquid tank 18, and so that are processed in batches are processed;
starting a low-speed motor 11 to enable a driving shaft 10 to rotate at a low speed, and automatically sleeving the shaft sleeve 9 with the flat key bar 13 under the thrust action of the cart when the flat key bar 13 is aligned with the groove part of the through hole of the shaft sleeve 9;
when the shaft sleeve 9 abuts against the limiting shaft shoulder 14, the trolley is driven reversely to perform the operation of the next wind power flange 1, the positioning barrel 7 of the wind power flange 1 is aligned with the positioning rod 6 of the previous wind power flange 1, the two wind power flanges 1 are assembled into a whole, and after all the wind power flanges 1 are installed in place, the end cap nuts II15 are screwed;
2) And (3) testing:
starting a low-speed motor 11 to test, gradually adjusting the rotating speed of a driving shaft 10, and observing whether the outer cambered surface of the wind power flange 1 and the supporting roller 3 at the bottom rotate at a constant speed in a positive center or not and whether the wind power flange 1 has the phenomena of torsion and slipping or not when the driving shaft 10 rotates;
3) Surface treatment:
after the test machine is qualified, the processing liquid tank 18 is lifted by the hydraulic rod 17 to be positioned at the highest position, the liquid level height in the processing liquid tank 18 is calculated and determined according to the required processing time of the wind power flange 1 for 15min, the low-speed motor 11 is started to carry out hot dip zinc processing, and the surface processing uniformity of each section of the wind power flange 1 is better under the process parameters, so that the inconvenience and the danger of the conventional integral soaking-lifting operation are avoided, and the defect that the conventional integral soaking-lifting process cannot uniformly process due to dripping is overcome;
4) Drying and other operations:
after the surface of the wind power flange 1 is treated, the treatment liquid tank 18 is lowered by the hydraulic rod 17 to be positioned at the lowest position, and after the wind power flange 1 is drained, the treatment liquid tank 18 can be covered by a cover plate, and the wind power flange 1 is blown and dried;
the thickness of the galvanized layer is tested, compared with a full-immersion type lifting hot-dip galvanizing process with the same soaking-lifting frequency and total soaking time, the galvanized layer obtained by the invention has no obvious defect, and the surface roughness Ra is less than 0.1, so that the improved intermittent surface treatment is simple and convenient to operate, the quality of the obtained product is improved, the zinc liquid is subjected to draining and cooling film forming processes in the lifting process, and meanwhile, the supporting roller 3 is subjected to scraping and smearing processes on the outer cambered surface of the wind power flange 1, so that the wind power flange 1 is more uniform.
The invention realizes coating of a layer-by-layer liquid film by pulling cooling-zinc dipping for a plurality of times Gao Pindi, and the zinc liquid with poor adhesion is easy to get rid of in the rotating process, thus obtaining the zinc plating layer with uniform surface and controllable thickness.
Under the condition that the driving shaft 10 rotates at a low speed, anticorrosive paste or chemical antirust protective agent can be smeared on the surface of the wind power flange 1;
under the condition that the driving shaft 10 rotates at a low speed, the wind power flange 1 is externally coated with a static film, so that the wind power flange 1 is packaged for a whole circle, and dust and water prevention in the transportation process are facilitated;
under the condition that the driving shaft 10 rotates at a low speed, an external protection belt and an anti-corrosion adhesive tape are wound on the edges of the inner arc surface and the outer arc surface of the wind power flange 1 and the end surface of the wind power flange, and a part affecting the sealing surface can be cut off by a blade before the wind power unit is installed, so that the on-site anti-corrosion work is greatly reduced;
6) And (5) stopping and unloading:
closing a low-speed motor 11, tying hanging strips on the tops of the wind power flanges 1, enabling the hanging strips to penetrate through an inner frame of a portal frame 4 to be connected with a crane or an electric hoist, unscrewing end-capped nuts II15, integrally supporting the wind power flanges 1 by using a forklift, and wrapping two forklift rods of the forklift with rubber belts, wherein the two forklift rods are used for protecting the surfaces of the wind power flanges 1, and the friction force between the forklift rods and the wind power flanges 1 is increased to enable the forklift rods to move so as to drive the bottoms of the wind power flanges 1 to move;
and slowly moving the forklift and pulling the hanging belt to enable the wind power flange 1 to be integrally separated from the inscribed circle area of the supporting roller 3, and hoisting the wind power flanges 1 to the transport vehicle one by one, so that unloading is completed.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (9)
1. The surface treatment method of the large-caliber flange for wind power is characterized by comprising the following steps of:
1) Equipment setting:
the surface treatment equipment comprises at least three support rollers (3) arranged on the periphery of the outer cambered surface of the wind power flange (1), the wind power flange (1) is provided with annular distributed flange holes (2), two support rollers (3) are arranged at two sides lower than the height of the center of the wind power flange (1), and the rest support rollers (3) are arranged at positions higher than the height of the center of the wind power flange (1);
the two ends of the supporting roller (3) are respectively connected with a portal frame (4) in a penetrating way, the two ends of the supporting roller (3) are provided with smooth shaft sections, the portal frame (4) is provided with bearing holes for the smooth shaft sections to be connected in a penetrating way, and the smooth shaft sections are provided with end-capped nuts I (5) so that the supporting roller (3) rotates in a driven way;
a positioning rod (6) is connected in the plurality of annularly distributed flange holes (2) in a penetrating way, one end of the positioning rod (6) is fixedly connected with a positioning cylinder (7), and one end of the positioning cylinder (7) far away from the connected positioning rod (6) is provided with a chute for the movable sleeving of the other positioning rod (6);
the outer wall of the positioning cylinder (7) is connected with a supporting plate (8), one side, far away from the positioning cylinder (7), of the supporting plate (8) is fixedly connected with a shaft sleeve (9), the shaft sleeve (9) is movably sleeved with a driving shaft (10), one end of the driving shaft (10) is connected with a low-speed motor (11), and the bottom of the low-speed motor (11) is provided with a motor seat (12);
the wind power flange is characterized in that a flat key bar (13) is embedded in the middle of the driving shaft (10), a through hole for the driving shaft (10) and the flat key bar (13) to be in sliding fit is formed in the shaft sleeve (9), a limiting shaft shoulder (14) is arranged at a position, close to one end part of the flat key bar (13), of the driving shaft (10), a blocking nut II (15) is arranged at one end, far away from the low-speed motor (11), of the driving shaft (10), and the limiting shaft shoulder (14) and the blocking nut II (15) are respectively positioned at two ends of the flat key bar (13) and used for limiting the wind power flange (1) from slipping;
a pit (16) is excavated on the ground right below the flat key bar (13), a hydraulic rod (17) is arranged on the bottom wall of the pit (16), and a treatment liquid tank (18) is fixedly connected to the top end of the hydraulic rod (17);
2) And (3) flange installation:
lowering a treatment liquid tank (18) through a hydraulic rod (17) to enable the treatment liquid tank to be at the lowest position, hanging a wind power flange (1) at the front end ground position of a supporting roller (3) through an electric hoist, enabling the wind power flange (1) to stand up, inserting a positioning rod (6) into a flange hole (2) and enabling a chute opening of a positioning cylinder (7) to face one side of a low-speed motor (11), screwing off a blocking nut II (15), pushing the wind power flange (1) into inscribed circle parts of a plurality of supporting rollers (3) through a trolley, starting the low-speed motor (11) to enable a driving shaft (10) to rotate at a low speed, and automatically sleeving the shaft sleeve (9) with the flat key bar (13) under the thrust action of the trolley when the flat key bar (13) is aligned with the groove part of a through hole of the shaft sleeve (9);
when the shaft sleeve (9) props against the limiting shaft shoulder (14), the trolley is driven reversely to perform the operation of the next wind power flange (1), the positioning cylinder (7) of the wind power flange (1) is aligned with the positioning rod (6) of the previous wind power flange (1), the two wind power flanges (1) are assembled into a whole, and after all the wind power flanges (1) are installed in place, the end cap nut II (15) is screwed;
3) And (3) testing:
starting a low-speed motor (11) for testing, gradually adjusting the rotating speed of a driving shaft (10), and observing whether the outer cambered surface of the wind power flange (1) and the supporting roller (3) at the bottom rotate at a constant speed in a positive center or not and whether the wind power flange (1) has the phenomena of torsion and slipping or not when the driving shaft (10) rotates;
4) Surface treatment:
after the test machine is qualified, the processing liquid tank (18) is lifted by the hydraulic rod (17) to be positioned at the highest position, and the rotating speed value of the driving shaft (10) and the liquid level height in the processing liquid tank (18) are determined according to the processing time required by the wind power flange (1);
the optimal parameters are that the instantaneous soaking volume accounts for 15-17% of the volume of the wind power flange (1), the rotating speed of the driving shaft (10) is 2.2-3.5r/min, and the total treatment time is 15-20min;
5) Drying and other operations:
after the surface treatment of the wind power flange (1) is finished, the treatment liquid tank (18) is lowered through the hydraulic rod (17), the treatment liquid tank (18) is located at the lowest position, after the wind power flange (1) is drained, the treatment liquid tank (18) is covered by the cover plate, and the wind power flange (1) is blown and dried;
under the condition that the driving shaft (10) rotates at a low speed, anticorrosive paste or chemical antirust protective agent is smeared on the surface of the wind power flange (1);
under the condition that the driving shaft (10) rotates at a low speed, the wind power flange (1) is externally coated with a static film, so that the wind power flange (1) is convenient to prevent dust and water in the transportation process after being packaged in a whole circle;
under the condition that the driving shaft (10) rotates at a low speed, an external protection belt and an anti-corrosion adhesive tape are wound at the edges of the inner arc surface and the outer arc surface of the wind power flange (1) and the end surface of the wind power flange;
6) And (5) stopping and unloading:
closing the low-speed motor (11), tying hanging strips at the tops of the wind power flanges (1) and enabling the hanging strips to penetrate through the inner frame of the portal frame (4) to be connected with a crane or an electric hoist, unscrewing the end-capped nuts II (15), integrally supporting the wind power flanges (1) by a forklift, slowly moving the forklift and pulling the hanging strips, enabling the wind power flanges (1) to be integrally separated from the inscribed circle area of the supporting roller (3), and hoisting the wind power flanges (1) to transport vehicles one by one, namely unloading is completed.
2. The surface treatment method of the large-caliber flange for wind power according to claim 1, wherein the diameter of the circumscribed cylindrical surface tangent to the inner sides of all the supporting rollers (3) is 0.5-1.5cm larger than the diameter of the wind power flange (1).
3. The surface treatment method of the large-caliber flange for wind power according to claim 1, wherein the bottom of the portal frame (4) is installed on the ground through a corner iron plate and a ground bolt.
4. The surface treatment method of the large-caliber flange for wind power according to claim 1, wherein the inner wall of the shaft sleeve (9) is smeared with lubricating oil.
5. The surface treatment method of the large-caliber flange for wind power according to claim 1, wherein gaskets are respectively arranged on the opposite end surfaces of the limiting shaft shoulder (14) and the end cap nut II (15).
6. The surface treatment method of the large-caliber flange for wind power according to claim 1, wherein a semicircular smooth groove is formed in the top of the groove wall of the treatment liquid groove (18) and is in contact with the two support rollers (3) positioned below, and load is shared by the support rollers (3).
7. The surface treatment method of the large-caliber flange for wind power according to claim 1, wherein the treatment liquid tank (18) is filled with zinc electroplating liquid, molten zinc liquid, black liquor, chemical antirust agent or paint liquid.
8. The surface treatment method of the large-caliber flange for wind power according to claim 1, wherein the front end of the trolley is provided with a vertical plate frame, the outer diameter of the vertical plate frame is smaller than the inner frame of the portal frame (4), and the vertical plate frame is intersected with the end face of the wind power flange (1) and a space for a driving shaft (10) to pass through is reserved inside the vertical plate frame.
9. The surface treatment method of the large-caliber flange for wind power according to claim 1, wherein two forklift rods of the forklift are wrapped with rubber belts.
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| CN202310279976.6A CN115992336B (en) | 2023-03-22 | 2023-03-22 | Surface treatment method of large-caliber flange for wind power |
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| CN115992336B CN115992336B (en) | 2023-06-09 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111004988A (en) * | 2018-10-05 | 2020-04-14 | 扬州市龙洋法兰管业制造有限公司 | Flange surface treatment method |
| CN112080774A (en) * | 2020-07-12 | 2020-12-15 | 江苏华江科技有限公司 | Surface treatment method for aluminum alloy rotor flange shell of offshore wind plant |
| CN212316219U (en) * | 2020-04-26 | 2021-01-08 | 江苏佳杰特种螺钉有限公司 | Hot-dip galvanizing device for processing flange nut for pipeline connection |
| WO2022047911A1 (en) * | 2020-09-07 | 2022-03-10 | 李翠萍 | Metal plate galvanizing device and machining method therefor |
| CN114704697A (en) * | 2022-03-08 | 2022-07-05 | 张家港华日法兰有限公司 | Wear-resistant corrosion-resistant pipeline flange and machining method thereof |
| CN217202913U (en) * | 2022-04-14 | 2022-08-16 | 嘉兴康柏特表面科技股份有限公司 | Long-life corrosion-resistant continuous hot-dip galvanizing device for flange nut |
-
2023
- 2023-03-22 CN CN202310279976.6A patent/CN115992336B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111004988A (en) * | 2018-10-05 | 2020-04-14 | 扬州市龙洋法兰管业制造有限公司 | Flange surface treatment method |
| CN212316219U (en) * | 2020-04-26 | 2021-01-08 | 江苏佳杰特种螺钉有限公司 | Hot-dip galvanizing device for processing flange nut for pipeline connection |
| CN112080774A (en) * | 2020-07-12 | 2020-12-15 | 江苏华江科技有限公司 | Surface treatment method for aluminum alloy rotor flange shell of offshore wind plant |
| WO2022047911A1 (en) * | 2020-09-07 | 2022-03-10 | 李翠萍 | Metal plate galvanizing device and machining method therefor |
| CN114704697A (en) * | 2022-03-08 | 2022-07-05 | 张家港华日法兰有限公司 | Wear-resistant corrosion-resistant pipeline flange and machining method thereof |
| CN217202913U (en) * | 2022-04-14 | 2022-08-16 | 嘉兴康柏特表面科技股份有限公司 | Long-life corrosion-resistant continuous hot-dip galvanizing device for flange nut |
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| CN115992336B (en) | 2023-06-09 |
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