CN115478979A - Impeller installation method and blade auxiliary tool - Google Patents

Impeller installation method and blade auxiliary tool Download PDF

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Publication number
CN115478979A
CN115478979A CN202110600422.2A CN202110600422A CN115478979A CN 115478979 A CN115478979 A CN 115478979A CN 202110600422 A CN202110600422 A CN 202110600422A CN 115478979 A CN115478979 A CN 115478979A
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CN
China
Prior art keywords
impeller
blade
auxiliary tool
blade auxiliary
tool
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Pending
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CN202110600422.2A
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Chinese (zh)
Inventor
李立山
张晓鹏
李志华
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Xinjiang Goldwind Science and Technology Co Ltd
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Xinjiang Goldwind Science and Technology Co Ltd
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Application filed by Xinjiang Goldwind Science and Technology Co Ltd filed Critical Xinjiang Goldwind Science and Technology Co Ltd
Priority to CN202110600422.2A priority Critical patent/CN115478979A/en
Publication of CN115478979A publication Critical patent/CN115478979A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/0608—Rotors characterised by their aerodynamic shape
    • F03D1/0633—Rotors characterised by their aerodynamic shape of the blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/065—Rotors characterised by their construction elements
    • F03D1/0675—Rotors characterised by their construction elements of the blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The impeller installation method comprises an impeller assembling step, an impeller hoisting step, an impeller turning step and a blade installing step, wherein in the impeller assembling step, at least one blade auxiliary tool is installed on a hub flange on the ground until each hub flange is not empty; in the impeller hoisting step, the impeller is hoisted to the engine room, and the gravity center of the blade auxiliary tool can be adjusted along the length direction of the blade auxiliary tool so as to be far away from or close to the hub; in the turning step of the impeller, the gravity center position of at least one blade auxiliary tool is adjusted, so that the impeller can rotate automatically until the impeller is located at a preset position; in the step of blade installation, dismantle blade auxiliary fixtures and install a blade on its corresponding position, can change the focus of impeller through the focus that removes blade auxiliary fixtures to make the impeller can take place the rotation, need not additionally to use barring frock, simplified the installation process of impeller, thereby reduced the installation cost of impeller.

Description

Impeller mounting method and blade auxiliary tool
Technical Field
The disclosure belongs to the technical field of wind power generation, and particularly relates to an impeller installation method and a blade auxiliary tool.
Background
Along with the continuous increase of the power of the wind generating set, the size of the blade is larger and longer, the self weight and the rotational inertia of the whole impeller part are increased, and therefore the impeller hoisting difficulty is increased.
At present, the installation of the impeller can adopt two hoisting modes, namely integral hoisting of the impeller and hoisting of a single blade. Before the impeller is integrally hoisted, the impeller is generally required to be assembled on the ground, and when the ground space is narrow, the hoisting mode is difficult to adopt. Although the installation mode of single-blade hoisting is not limited by the ground assembly space, the hoisting times are increased due to the fact that each blade is hoisted respectively, the installation time of the impeller is prolonged, and therefore the installation cost of the wind generating set is increased. Besides, in the single-blade hoisting process, a barring tool is additionally configured to barring the impeller, so that the blades can be horizontally hoisted. The additional turning tool not only increases the manufacturing cost, but also occupies a limited installation space in the cabin.
Disclosure of Invention
The main purpose of the present disclosure is to provide an impeller installation method to reduce the installation cost of the impeller.
Aiming at the above purpose, the present disclosure provides the following technical solutions:
in one aspect of the present disclosure, an impeller installation method is provided, which is suitable for a wind generating set, the wind generating set includes a tower and a nacelle fixed at the top end of the tower, the impeller installation method includes an impeller assembling step, an impeller hoisting step, an impeller turning step, and a blade installation step, in the impeller assembling step, at least one blade auxiliary tool is installed on a hub flange of a hub on the ground until each hub flange is not empty; when the impeller is hoisted to the cabin, the gravity center of the blade auxiliary tool can be adjusted along the length direction of the blade auxiliary tool so as to be far away from or close to the hub; in the step of turning the impeller, the gravity center position of at least one blade auxiliary tool is adjusted, so that the impeller can rotate automatically until the impeller is located at a preset position; and in the step of blade installation, disassembling the blade auxiliary tool and installing one blade at the corresponding position of the blade auxiliary tool.
According to the impeller mounting method, the blade auxiliary tool is mounted on the hub, the gravity center of the impeller can be changed by moving the gravity center of the blade auxiliary tool, so that the impeller can rotate, the turning tool does not need to be additionally used, the mounting process of the impeller is simplified, and the mounting cost of the impeller is reduced.
In an exemplary embodiment of the present disclosure, after the impeller assembling step, a torque adjusting step is performed: and adjusting the gravity center position of at least one blade auxiliary tool so as to balance the gravity moment of the impeller relative to the axis of one hub flange. So set up, after installing the impeller on the generator output shaft, the impeller keeps moment balance to can avoid leading to unexpected rotatory because moment is uneven.
Optionally, the impeller comprises at least one blade, and in the step of lifting the impeller, the tip of one blade faces downwards and is arranged in the vertical direction, so that the positioning of the impeller can be facilitated.
Further, in the step of turning the impeller, the impeller is unlocked, the center of gravity of the blade auxiliary tool is moved so that the impeller rotates to a position where the flange end surface of the hub flange connected to the blade auxiliary tool faces the horizontal direction, the impeller is locked again, and the blade is mounted. So set up, the flange terminal surface of the wheel hub flange of being connected with blade auxiliary fixtures is towards the horizontal direction, and the blade auxiliary fixtures and the blade of being convenient for carry out the horizontality and lift by crane, have reduced the degree of difficulty of hoist and mount.
In another exemplary embodiment of the present disclosure, the impeller includes 3 blade auxiliary fixtures, and in the impeller hoisting step, one blade auxiliary fixture is hoisted to the nacelle in a state where the blade auxiliary fixture is arranged in a vertical direction.
In another exemplary embodiment of the present disclosure, the impeller includes one blade auxiliary tool and two blades, and in the impeller hoisting step, the blade is hoisted to a nacelle in a state that tips of the blades are arranged downward in a vertical direction; and in the step of turning the impeller, unlocking the impeller, moving the gravity center of the blade auxiliary tool along the direction back to the hub so as to enable the impeller to rotate to the position where the flange end face of a hub flange connected with the blade auxiliary tool faces the horizontal direction, locking the impeller again, disassembling the blade auxiliary tool and performing the blade installation step. So set up, the impeller can rotate, and can rotate to the flange terminal surface horizontal direction setting of the wheel hub flange of being connected with blade auxiliary fixtures.
The impeller comprises two blade auxiliary tools and one blade, the blade auxiliary tools comprise a first blade auxiliary tool and a second blade auxiliary tool, in the step of hoisting the impeller, the tip of the blade is arranged downwards along the vertical direction, in the step of turning the impeller, the impeller is unlocked, the gravity center of the first blade auxiliary tool and/or the second blade auxiliary tool is adjusted, so that the impeller rotates to the position, facing the horizontal direction, of the flange end face of the hub flange connected with the first blade auxiliary tool, the impeller is locked again, and the first blade auxiliary tool is detached and the second blade is installed. So set up, can make the impeller rotatory through the focus position of adjustment impeller, and then simplify impeller barring step.
Further, the impeller mounting method further comprises the following steps: and unlocking the hub, moving the balancing weight of the second blade auxiliary tool along the direction back to the hub so as to enable the hub to rotate to the end face of the flange of the hub connected with the second blade auxiliary tool, facing the horizontal direction, locking the impeller again, and disassembling the second blade auxiliary tool and installing a third blade. The blade auxiliary tool comprises a tool main body and a balancing weight which is arranged on the tool main body in a sliding mode along the length direction of the tool main body. So set up, the blade auxiliary fixtures simple structure that this disclosure provided is convenient for make.
Optionally, the length of the blade auxiliary tool is smaller than that of the blade. So set up, blade auxiliary fixtures volume is less, and area is few, can be in the constrictive equipment occasion in equipment space.
The utility model discloses another aspect provides a blade auxiliary fixtures, is applicable to the blade of equipment wind generating set, blade auxiliary fixtures includes frock main part, balancing weight and drive arrangement, the balancing weight is followed the length direction slidable ground of frock main part sets up in the frock main part, drive arrangement is used for driving the balancing weight removal.
Optionally, the blade auxiliary tool further comprises a signal receiver and a signal transmitter, the signal receiver can receive a signal sent by the signal transmitter, and can control the driving device to start and stop so as to drive the counterweight block to move.
The driving device comprises a screw shaft, a screw nut and a driving motor, the screw shaft is fixed on an output shaft of the driving motor, the screw nut is fixed on the balancing weight, and the balancing weight is driven to move relative to the tool body by the rotation of the screw shaft relative to the screw nut; or, drive arrangement include the sprocket and with the chain that the sprocket matches, the both ends of chain are connected respectively the both ends of the advancing direction of balancing weight, the sprocket rotationally sets up in the frock main part, in order to drive the chain is rotatory.
The impeller mounting method and the blade auxiliary tool provided by the disclosure at least have the following beneficial effects: according to the impeller mounting method, the blade auxiliary tool is mounted on the hub, the gravity center of the impeller can be changed by moving the gravity center of the blade auxiliary tool, so that the impeller can rotate, the turning tool does not need to be additionally used, the mounting process of the impeller is simplified, and the mounting cost of the impeller is reduced. According to the impeller assembling method, the impeller is preassembled on the ground and integrally hoisted by means of the blade auxiliary tool, the preassembled impeller is formed by installing one blade or two blades on the hub, and the defect that the impeller is assembled in a large space before integral hoisting is overcome; compared with single blade hoisting, the pre-assembled impeller disclosed by the invention has the advantages that the hoisting times of the impeller in aerial installation are reduced, and thus the hoisting cost is reduced.
Drawings
The above and/or other objects and advantages of the present disclosure will become more apparent from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:
fig. 1 is a flowchart of an impeller mounting method according to a first exemplary embodiment of the present disclosure.
Fig. 2 is a flowchart of an impeller installation method provided in a second exemplary embodiment of the present disclosure.
FIG. 3 is a block diagram of a blade attachment provided in an exemplary embodiment of the present disclosure.
Fig. 4 is a partially enlarged view of the state of the counterweight block and the lead screw in fig. 3.
FIG. 5 is a block diagram of a blade attachment provided in accordance with another exemplary embodiment of the present disclosure.
Description of reference numerals:
10. a hub; 20. A blade;
20-1, a first blade; 20-2, a second blade;
20-3, a third blade; 30. A blade auxiliary tool;
30-1, a first blade auxiliary tool; 30-2, a second blade auxiliary tool;
31. a tool main body; 32. A counterweight block;
33. a drive device; 331. A screw shaft;
332. a lead screw nut; 333. A drive motor;
35. a guide rail; 36. And a chain.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, it should not be understood that the aspects of the present disclosure are limited to the embodiments set forth herein. The same reference numerals in the drawings denote the same or similar structures, and thus a detailed description thereof will be omitted.
In one aspect of the present disclosure, an impeller installation method is provided, which is particularly suitable for a wind turbine generator system, where the wind turbine generator system includes a tower and a nacelle fixed to a top end of the tower, the impeller installation method may include an impeller assembling step, an impeller hoisting step, an impeller turning step, and a blade installation step, and in particular, refer to fig. 1 and 2.
The impeller assembling step is specifically that at least one blade auxiliary tool 30 can be installed on the hub flange of the hub 10 on the ground until each hub flange is not vacant, and then the impeller can be formed. In the present disclosure, the impeller may include 3 blade auxiliary fixtures 30, 2 blade auxiliary fixtures 30 and 1 blade 20, and 1 blade auxiliary fixture 30 and 2 blades 20.
The impeller hoisting step is specifically to hoist the impeller to the nacelle, wherein the center of gravity of the blade auxiliary tool 30 can be adjusted along the length direction thereof, so that the center of gravity thereof can be far away from or close to the hub 10. Optionally, in the step of lifting the impeller, the gravity torque of the impeller is balanced, so that after the impeller is installed on the output shaft of the generator, the impeller can keep the torque balance, thereby avoiding accidental rotation caused by torque imbalance and improving the operation safety.
The turning step of the impeller is specifically to adjust the gravity center position of at least one blade auxiliary tool 30, so that the impeller can rotate to a preset position by itself, and the impeller is locked at the preset position.
The blade mounting step is specifically to detach the blade auxiliary tool 30 and mount one blade 20 at a corresponding position.
The blade auxiliary tool device provided by the disclosure has the advantages that the gravity center position of the blade auxiliary tool device can move along the extending direction of the blade auxiliary tool device 30, so that the gravity center can be close to or far away from the hub 10, the gravity center of an impeller can be changed by adjusting the gravity center position of the blade auxiliary tool device 30, the impeller can rotate to a preset position without additionally using a turning tool, the installation process of the impeller is simplified, and the installation cost of the impeller is reduced. Further, the impeller is preassembled on the ground and integrally hoisted by means of the blade auxiliary tool 30, the preassembled impeller is formed by installing one blade or two blades on the hub, or the preassembled impeller is formed by installing 3 blade auxiliary tools 30 on the hub, and the defect that the impeller needs a large space to be assembled before integral hoisting is overcome; compared with single blade hoisting, the pre-assembled impeller disclosed by the invention has the advantages that the hoisting times of the impeller in aerial installation are reduced, and thus the hoisting cost is reduced.
As an example, referring to fig. 3 to 5, the blade auxiliary tool 30 provided by the present disclosure may include a tool main body 31 and a weight block 32. The tool main body 31 may be a strip shape as a whole, the length direction of the tool main body 31 may be an extending direction, the weight 32 may be movably disposed on the tool main body 31, and the weight 32 may slide along the length direction, so that the center of gravity of the blade auxiliary tool 30 is changed by changing the position of the weight 32 relative to the tool main body 31, and the center of gravity of the impeller is adjusted.
Further, the length of the tool main body 31 in the extending direction can be smaller than that of the blades 20, so that the occupied space of the impeller is reduced, the tool main body can adapt to the assembly place with narrow ground assembly space, and the universality of integral hoisting of the impeller is improved.
In order to improve the operational safety, a moment adjustment step may be performed after the impeller assembly step, to adjust the position of the center of gravity of the at least one blade attachment 30 so that the impeller is moment-balanced with respect to the axis of one of the hub flanges. After installing the impeller on generator output shaft, can remove the constraint of hoist and mount frock to the impeller, the impeller can the free rotation this moment, because the impeller keeps moment balance to can avoid leading to the unexpected rotation of impeller owing to remove moment imbalance behind the external force constraint.
As an example, in the impeller lifting step, one blade 20 may be disposed in a vertical direction with a tip of the blade facing downward, i.e., a length direction of the blade 20 is disposed perpendicular to a horizontal plane. After the impeller is hoisted, the impeller can be locked, so that potential safety hazards caused by rotation of the impeller are avoided.
Specifically, in the step of turning the impeller, the center of gravity of the blade assist tool 30 is moved, for example, but not limited to, the weight 32 may be moved in a direction toward the hub 10 or in a direction away from the hub 10 along the extending direction of the tool main body 31 to change the center of gravity of the blade assist tool 30.
Before moving the center of gravity of blade auxiliary fixtures 30, can unblock the impeller earlier, then slowly move the center of gravity of blade auxiliary fixtures 30 again, prevent that the impeller from rotating suddenly at the excessive speed and causing the potential safety hazard. In the process of moving the center of gravity of the blade auxiliary tool 30, the moving speed of the center of gravity of the blade auxiliary tool 30 can be controlled, so that the impeller is prevented from rotating too fast. In the present disclosure, since the center of gravity of the blade auxiliary tool 30 moves, the impeller loses moment balance, and thus can rotate by itself.
When the impeller is rotated to a predetermined position, the impeller may be braked to maintain it in the predetermined position, at which point the hub 10 may be locked again. As an example, the predetermined position may be that the flange end face of the hub flange connected with the blade auxiliary tool 30 faces the horizontal direction, but is not limited thereto. Alternatively, at this predetermined position, the corresponding hub flange is in a state where the blade 20 can be hoisted horizontally and mounted horizontally.
When the impeller is in a preset position, the blade auxiliary tool 30 can be disassembled, the blades 20 are installed on the hub flanges corresponding to the blade auxiliary tool 30, the steps are repeated until each hub flange is provided with a blade 20, and the impeller is assembled.
In fact, the blade auxiliary fixtures 30 that this disclosure provided can be through removing the position of balancing weight 32 for frock main part 31, change blade auxiliary fixtures 30's focus, the centrobaric moving direction of impeller is the same with balancing weight 32's moving direction, thereby make the moment of whole impeller lose original balance, under wheel hub 10 unblock state, the rotation will take place for the impeller, and need not additionally to set up barring frock, the quantity of the auxiliary fixtures in the impeller installation process has been reduced, the installation cost of impeller has been reduced. Alternatively, the weight 32 may be moved in a direction toward the hub 10, and the weight 32 may also be moved in a direction away from the hub 10.
As an example, the impeller may include 3 hub flanges, and in the impeller hoisting step, each hub flange is not left empty, that is, the blade auxiliary tool 30 may be installed on one hub flange, and the blades 20 may be installed on the other two hub flanges; or one hub flange is provided with the blade 20, and the other two hub flanges are provided with the blade auxiliary tool 30; blade auxiliary fixtures 30 may also be provided on 3 hub flanges.
Specifically, referring to fig. 1, the impeller may include one blade auxiliary tool 30 and two blades 20, and the two blades 20 may be a first blade 20-1 and a second blade 20-2, respectively. As shown in step a in fig. 1, in the step of lifting the impeller, the second blade 20-2 may be disposed with its tip facing downward and along a vertical direction, and form an angle of 90 ° with a horizontal plane, at this time, the first blade 20-1 and the blade auxiliary tool 30 may be respectively disposed on two sides of a longitudinal axis passing through the center of the hub 10, and both may form an angle of 30 ° with the horizontal plane.
In the step of turning the impeller, as shown in step B of fig. 1, the hub 10 may be unlocked to allow the hub to rotate freely, and then the center of gravity of the impeller may be slowly adjusted to allow the impeller to rotate slowly to a predetermined angle. Alternatively, the weight 32 of the blade assist tool 30 may be moved in the extending direction of the tool main body 31 in a direction away from the hub 10. As shown in fig. 1, the weight 32 moves toward the right side of the hub 10, the center of gravity of the blade attachment 30 moves to the right, and the center of gravity of the impeller also moves to the right, so that the moment of the blade attachment 30 increases. The impeller rotates due to the loss of the original balance, namely clockwise rotation, the impeller rotates clockwise by 30 degrees in the process until the flange end face of the hub flange connected with the blade auxiliary tool 30 faces the horizontal direction, and at the moment, the hub 10 can be locked again to keep the impeller at the position. Further, as shown in step C of fig. 1, the blade auxiliary tool 30 may be disassembled and a blade mounting step may be performed, as shown in step D of fig. 1, to mount the third blade 20-3 to the hub 10, thereby completing the mounting of the impeller.
According to the impeller installation method provided by the disclosure, the impeller can comprise two blades 20 and one blade auxiliary tool 30, the balancing weight 32 can move along the extending direction of the tool main body 31 relatively, the gravity moment of the blade auxiliary tool 30 is adjustable, so that the integral moment of the impeller can be adjusted through the movement of the balancing weight 32, and the impeller rotates under the unlocking state of the hub 10, so that the turning tool does not need to be additionally used, the operation process of impeller assembly is simplified, and the cost of impeller assembly is reduced.
Further, the impeller can integrally keep moment balance in the hoisting step by arranging the blade auxiliary tool 30, so that the integral hoisting is facilitated.
Because the length of the tool main body 31 in the extending direction can be smaller than that of the blades 20, the occupied space of the impeller is reduced, and the impeller can be assembled under the condition that the ground assembling space is narrow.
Further, the impeller may include two blade auxiliary tools 30 and one blade 20, the blade auxiliary tool 30 may include a first blade auxiliary tool 30-1 and a second blade auxiliary tool 30-2, and in the step of lifting the impeller, the tip of the blade 20 is disposed downward in a vertical direction.
In the step of turning the impeller, the impeller is unlocked, the center of gravity of the first blade auxiliary tool 30-1 and/or the second blade auxiliary tool 30-2 is adjusted so that the impeller rotates to a position where the flange end face of the hub flange connected with the first blade auxiliary tool 30-1 faces the horizontal direction, the impeller is locked again, the first blade auxiliary tool 30-1 is disassembled, and the second blade 20-2 is installed.
As an example, referring to fig. 2, in the impeller hoisting step, the blade 20 is hoisted to the nacelle in a state that the tip of the blade is disposed downward in the vertical direction, so that the first blade auxiliary tool 30-1 and the second blade auxiliary tool 30-2 are symmetrically disposed about the longitudinal axis passing through the center of the hub 10, so that the impeller maintains the moment balance, as shown in step a. In order to improve the safety of high-altitude operation, the impeller can be locked after being hoisted to the cabin, so that the impeller is prevented from rotating accidentally.
In the step of turning the impeller, as shown in the step B, the impeller is unlocked first, and the counterweight 32 of the first blade auxiliary tool 30-1 can be slowly moved in the direction away from the hub 10, so that the impeller rotates clockwise. At the moment, the gravity center of the first blade auxiliary tool 30-1 moves to the right, the whole gravity center of the impeller also moves to the right, and the gravity moment on the right side of the impeller is larger than that on the left side of the impeller, so that the moment balance of the impeller is lost. Under the state of unlocking the hub 10, the impeller can rotate automatically, namely rotate clockwise, until the flange end face of the hub flange connected with the first blade auxiliary tool 30-1 faces the horizontal direction, the impeller rotates clockwise by 30 degrees in the process, the impeller can be braked until the impeller is kept at the position, the hub 10 is locked again, and the first blade auxiliary tool 30-1 is arranged horizontally.
Then, as shown in the step C, the first blade auxiliary tool 30-1 may be disassembled, and during the disassembling process, the first blade auxiliary tool 30-1 may be disassembled and lifted in a horizontal state, so that the hub flange connected to the first blade auxiliary tool 30-1 is vacant, and then the second blade 20-2 is lifted horizontally and mounted on the hub flange, as shown in the step D. In this embodiment, the first blade auxiliary tool 30-1 may be detached and the second blade 20-2 may be installed by using an additional hoisting tool, for example, but not limited to, the hoisting tool may be a crane.
After the second blade 20-2 is installed, the weight 32 of the second blade auxiliary tool 30-2 can be moved in a direction away from the hub 10, as shown in step E, at this time, the center of gravity of the second blade auxiliary tool 30-2 will move to the left, and the overall center of gravity of the impeller will also move to the left. Under the state of unlocking the hub 10, the impeller rotates anticlockwise until the flange end face of the hub flange connected with the second blade auxiliary tool 30-2 faces the horizontal direction, namely the second blade auxiliary tool 30-2 is horizontally arranged, in the process, the impeller rotates anticlockwise by 60 degrees, at the moment, the impeller can be braked until the impeller is kept at the position, and the hub 10 is locked again. Then, as shown in the steps of fig. F and G, the second blade auxiliary tool 30-2 can be disassembled and the third blade 20-3 can be installed, so that the installation of the impeller is completed.
In the case where the impeller includes two blade assist tools 30, the impeller mounting method is not limited to the above-described method. In the impeller turning step, in order to make the flange end surface of the hub flange connected to the first blade auxiliary tool 30-1 face the horizontal direction, the weight 32 of the second blade auxiliary tool 30-2 may be moved toward the hub 10, or the weight 32 of the first blade auxiliary tool 30-1 and the weight 32 of the second blade auxiliary tool 30-2 may be adjusted at the same time, as long as the moment of the impeller on the side where the first blade auxiliary tool 30-1 is located is larger than the moment of the impeller on the side where the second blade auxiliary tool 30-2 is located.
The embodiments provided in the present disclosure are all described by taking the blade as an example for horizontal hoisting and horizontal installation, but not limited to this, the blade may also be hoisted and installed in other angle states, for example, 15 °,30 °,45 °,60 °,75 °,90 °, and the like.
Further, the impeller can include 3 blade auxiliary fixtures 30, and in the impeller lift by crane the in-process to the installation step of specific blade is lifted to the cabin along the state that vertical direction set up to a blade auxiliary fixture 30, and it is the embodiment to include 2 blade auxiliary fixtures 30 and 1 blade with reference to the impeller, and no longer the repeated description.
With continued reference to fig. 3 to 5, the vane auxiliary tool of the present disclosure includes a tool main body 31, a weight 32 and a driving device 33 for driving the weight 32 to move, the tool main body 31 may be a strip shape extending along a straight line, and the length of the tool main body 31 may be smaller than the length of the vane 20, so that the volume of the vane auxiliary tool 30 is more flexible, and the vane is convenient to assemble on an occasion with a narrow ground assembly space.
The weight 32 may be slidably provided on the tool body 31 in a length direction of the tool body 31 to adjust the center of gravity of the blade auxiliary tool 30 by moving on the tool body 31.
The driving device 33 may be a screw assembly or a chain.
With continued reference to fig. 3 and 4, in particular, the driving device 33 may include a screw shaft 331, a screw nut 332, and a driving motor 333, the screw shaft 331 may be fixed on an output shaft of the driving motor 333, the screw nut 332 may be fixed on the weight 32, and the weight 32 may be driven to move relative to the tool body 31 by the rotation of the screw shaft 331 relative to the screw nut 332. Alternatively, a lead screw nut 332 may be embedded in the weight 32, the lead screw shaft 331 may be matched with the lead screw nut 332, the lead screw shaft 331 may extend in the first direction, and the weight 32 may be reciprocated in the first direction by rotating the lead screw shaft 331 with respect to the lead screw nut 332. In this embodiment, the tool main body 31 may be a truss structure to reduce the weight of the blade auxiliary tool 30, or may be a solid column structure.
In addition, as shown in fig. 5, the driving device 33 may further include a chain 36, two ends of the chain 36 are respectively connected to two ends of the weight 32 in the first direction, so that the chain 36 and the weight 32 form a closed loop, and the weight 32 is driven to move in the loop by driving the chain 36, so as to drive the weight 32 to move back and forth in the first direction.
Further, in order to improve the removal precision of balancing weight 32, prevent that balancing weight 32 from removing the in-process deviation that appears, blade auxiliary fixtures 30 can also include guide rail 35, and guide rail 35 can be followed the first direction and extended, can be provided with the through-hole that matches with guide rail 35 on the balancing weight 32, so set up and can pass through guide rail 35 guide balancing weight 32 and remove, can accurately control balancing weight 32's moving direction.
The blade auxiliary tool 30 may further include a signal receiver and a signal transmitter (not shown), the signal receiver may receive a signal sent by the signal transmitter, and may control the driving device to start and stop to drive the counterweight 32 to move, for example, but not limited to, the signal receiver may be fixed on the blade auxiliary tool 30, and the signal transmitter may be disposed in a remote controller, and an operator may control the counterweight 32 to move in the air through the remote controller. In this embodiment, the blade auxiliary tool 30 may further include a generator or a storage battery, and the generator or the storage battery may be electrically connected to the signal receiver to serve as a power source of the signal receiver.
According to the impeller installation method provided by the disclosure, the impeller can comprise two blades 20 and one blade auxiliary tool 30, the balancing weight 32 can move along the extending direction of the tool main body 31 relatively, the gravity moment of the blade auxiliary tool 30 is adjustable, so that the integral moment of the impeller can be adjusted through the movement of the balancing weight 32, and the impeller rotates under the unlocking state of the hub 10, so that the turning tool does not need to be additionally used, the operation process of impeller assembly is simplified, and the cost of impeller assembly is reduced.
In the description of the present disclosure, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the disclosure, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the disclosure.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present disclosure, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the present disclosure, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present disclosure can be understood in specific instances by those of ordinary skill in the art.
The described features, structures, or characteristics of the disclosure may be combined in any suitable manner in one or more embodiments. In the above description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the embodiments of the disclosure may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.

Claims (12)

1. A method for mounting an impeller, which is suitable for a wind generating set, the wind generating set comprises a tower and a cabin fixed at the top end of the tower, and the method for mounting the impeller comprises the following steps:
assembling an impeller: mounting at least one blade auxiliary tool (30) on a hub flange of a hub (10) on the ground until each hub flange is not empty;
hoisting the impeller: hoisting the impeller to the nacelle, wherein the center of gravity of the blade auxiliary tool (30) can be adjusted along the length direction of the blade auxiliary tool to be far away from or close to the hub (10);
turning an impeller: adjusting the gravity center position of at least one blade auxiliary tool (30) to enable the impeller to rotate by itself until the impeller is located at a preset position;
blade installation: and disassembling the blade auxiliary tool (30) and installing a blade (20) at the corresponding position of the blade auxiliary tool.
2. The method of installing an impeller according to claim 1, wherein after the impeller assembling step, a torque adjusting step is performed: and adjusting the gravity center position of at least one blade auxiliary tool (30) so as to balance the gravity moment of the impeller relative to the axis of one hub flange.
3. The method of mounting an impeller according to claim 1, wherein the impeller comprises at least one blade (20), and in the impeller lifting step, a tip of one of the blades (20) is disposed in a vertical direction with a downward tip.
4. The impeller mounting method according to claim 1, wherein in the impeller turning step, the impeller is unlocked, the center of gravity of the blade assist tool (30) is moved so that the impeller is rotated until the flange end surface of the hub flange connected to the blade assist tool (30) faces in the horizontal direction, the impeller is locked again, and the blade mounting step is performed.
5. The method of mounting an impeller according to claim 1, wherein the impeller comprises one said blade attachment (30) and two said blades (20),
in the impeller hoisting step, hoisting the two blades (20) to the engine room in a state that one blade tip of the two blades faces downwards and is arranged along the vertical direction;
in the step of turning the impeller, unlocking the impeller, moving the gravity center of the blade auxiliary tool (30) in the direction far away from the hub (10) so that the impeller rotates to the horizontal direction of the flange end face of a hub flange connected with the blade auxiliary tool (30), locking the impeller again, detaching the blade auxiliary tool (30), and performing the step of installing the blades.
6. The method for mounting an impeller according to claim 1, wherein the impeller comprises two blade auxiliary tools (30) and one blade (20), the blade auxiliary tools (30) comprise a first blade auxiliary tool (30-1) and a second blade auxiliary tool (30-2),
in the step of lifting the impeller, the tip of the blade (20) faces downwards and is arranged along the vertical direction,
in the step of turning the impeller, unlocking the impeller, adjusting the gravity center of the first blade auxiliary tool (30-1) and/or the second blade auxiliary tool (30-2) so that the impeller rotates until the flange end face of a hub flange connected with the first blade auxiliary tool (30-1) faces the horizontal direction, locking the impeller again, disassembling the first blade auxiliary tool (30-1) and installing a second blade (20-2).
7. The method of installing an impeller of claim 6, further comprising the steps of: unlocking a hub (10), moving a balancing weight (32) of the second blade auxiliary tool (30-2) along the direction far away from the hub (10), so that the hub (10) rotates to the position, facing the horizontal direction, of the flange end face of a hub flange connected with the second blade auxiliary tool (30-2), locking the impeller again, and detaching the second blade auxiliary tool (30-2) and installing a third blade (20-3).
8. The impeller mounting method according to any one of claims 1 to 7, wherein the blade auxiliary tool (30) comprises a tool main body (31) and a weight block (32) slidably disposed on the tool main body (31) in a length direction of the tool main body (31).
9. The method for mounting an impeller according to any one of claims 1-7, characterized in that the length of the blade auxiliary tool (30) is smaller than the length of the blade (20).
10. The utility model provides a blade auxiliary fixtures, is applicable to equipment wind generating set's blade, its characterized in that, blade auxiliary fixtures includes:
a tool body (31);
the balancing weight (32) is arranged on the tool main body (31) in a sliding manner along the length direction of the tool main body (31);
and the driving device (33) is used for driving the balancing weight (32) to move.
11. The blade auxiliary tool according to claim 10, further comprising a signal receiver and a signal transmitter, wherein the signal receiver can receive a signal sent by the signal transmitter, and can control the driving device to start and stop to drive the counterweight (32) to move.
12. The blade auxiliary tool according to claim 10 or 11, wherein the driving device (33) comprises a screw shaft (331), a screw nut (332), and a driving motor (333), the screw shaft (331) is fixed to an output shaft of the driving motor (333), the screw nut (332) is fixed to the weight block (32), and the weight block (32) is driven to move relative to the tool body (31) by the rotation of the screw shaft (331) relative to the screw nut (332); or,
drive arrangement (33) including the sprocket with chain (36) that the sprocket matches, the both ends of chain (36) are connected respectively the direction of advance's of balancing weight (32) both ends, the sprocket rotationally sets up on frock main part (31), in order to drive chain (36) are rotatory.
CN202110600422.2A 2021-05-31 2021-05-31 Impeller installation method and blade auxiliary tool Pending CN115478979A (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117432574A (en) * 2023-12-20 2024-01-23 苏州天顺复合材料科技有限公司 Wind-powered electricity generation blade is with exempting from to stand up installation fastener

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117432574A (en) * 2023-12-20 2024-01-23 苏州天顺复合材料科技有限公司 Wind-powered electricity generation blade is with exempting from to stand up installation fastener
CN117432574B (en) * 2023-12-20 2024-04-19 苏州天顺复合材料科技有限公司 Wind-powered electricity generation blade is with exempting from to stand up installation fastener

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