CN217055923U - High-strength insulating transmission shaft for high-power wind driven generator - Google Patents
High-strength insulating transmission shaft for high-power wind driven generator Download PDFInfo
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- CN217055923U CN217055923U CN202220184432.2U CN202220184432U CN217055923U CN 217055923 U CN217055923 U CN 217055923U CN 202220184432 U CN202220184432 U CN 202220184432U CN 217055923 U CN217055923 U CN 217055923U
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Abstract
The utility model discloses a high-strength insulation transmission shaft for a high-power wind driven generator, which comprises an insulation shaft and a metal flange; the insulating shaft is formed by winding glass fibers, and the outer layer of the glass fibers is coated with an epoxy resin layer; the metal flange comprises an axial part and a radial part, and the end part of the insulating shaft is matched with the axial part of the metal flange and is fixedly connected through a chemical connecting intermediate; the utility model discloses a verification of qualification nature nondestructive test and the verification of compliance intensity detection not only can guarantee the intensity of transmission shaft, can effectively reduce the harm of axle current moreover to can satisfy bigger intensity requirement and higher insulating degree requirement, be applicable to high-power aerogenerator.
Description
Technical Field
The utility model relates to a wind power generation technical field especially relates to an insulating transmission shaft of high strength for high-power aerogenerator.
Background
Due to the greenhouse effect, the global environment is continuously worsened, the development and the use of clean energy are urgent, wind power comes from natural gas flow caused by solar energy, and the application of the wind energy is more and more emphasized by countries in the world for solving the important clean energy source of the greenhouse effect problem.
The principle of wind power generation is that wind power drives windmill blades to rotate, and then the rotating speed is increased through a speed increaser, so that a generator is promoted to generate electricity. The devices required for wind power generation are called wind generating sets. The wind generating set can be divided into three parts of a wind wheel, a generator and an iron tower. The generator is the core of the wind generating set and has the function of transmitting the constant rotating speed obtained by the wind wheel to the generating mechanism for uniform operation through increasing the speed, so that the mechanical energy is converted into electric energy. And the transmission shaft of the generator is the core component of the generator.
In order to reduce the development cost of wind power generation and improve the efficiency, the development of wind power generation gradually advances to a high-power single machine, and a wind power generator not only needs to be provided with a high-strength insulating transmission shaft, but also needs to solve the isolation problem of harmful shaft current in a transmission chain, so that a reliable, stable and efficient transmission system can be provided.
Harmful shaft current is generated in the generator, harmful high-temperature electric corrosion is generated on the linking parts such as bearings in a transmission chain, and if the isolation problem of the shaft current is not solved, the wind driven generator cannot stably and safely operate for a long time. Usually, a low-power wind driven generator can realize shaft current isolation through insulating chain plates, insulating cushion blocks and the like, but cannot realize high-power high-torque transmission due to the strength limitation of insulating plate parts.
SUMMERY OF THE UTILITY MODEL
The utility model provides a solve above-mentioned problem, provide an insulating transmission shaft of high strength suitable for high-power aerogenerator, can effectively reduce the harm of harmful axle electric current.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a high-strength insulation transmission shaft for a high-power wind driven generator comprises an insulation shaft and a metal flange; the insulating shaft is formed by winding glass fibers, and the outer layer of the glass fibers is coated with an epoxy resin layer; the metal flange comprises an axial part and a radial part, and the end part of the insulating shaft is matched with the axial part of the metal flange and is fixedly connected through a chemical connecting intermediate body.
The utility model discloses an insulating axle forms the insulating transmission shaft of high strength with the combination of metal flange, and insulating axle adopts the glass fiber coiling to form, can enough satisfy the intensity requirement, can effectively reduce the harm of harmful axle electric current again.
The utility model discloses an insulating axle construction need not to use insulating link joint to completely cut off axle current, more is applicable to high-power aerogenerator's transmission shaft.
The utility model discloses an insulating axle adopts the winding mode to make, can also conveniently adjust the wall thickness of insulating axle according to the intensity requirement of product.
Preferably, the insulating shaft is a hollow tubular structure, and the outer surface and/or the hollow inner surface of the insulating shaft are/is matched with the axial part of the metal flange.
The utility model discloses an insulating axle adopts hollow structure, not only can alleviate axis body weight, is convenient for reliably be connected insulating axle and metal flange moreover.
Preferably, the outer surface of the end part of the insulating shaft is provided with a first outer conical surface, the inner surface of the end part of the insulating shaft is provided with a first inner conical surface, the chemical connecting intermediate is coated on the first outer conical surface and the first inner conical surface, and the inner conical surface and the outer conical surface are combined to form a wedge-shaped structure; the axial part of the metal flange is provided with an annular groove extending along the axial direction; the annular groove is a wedge-shaped groove matched with the wedge-shaped structure of the insulating shaft, and the outer end of the wedge-shaped groove is sealed to form a limiting end face so as to axially limit the end part of the insulating shaft.
The utility model discloses an insulating axle adopts two-sided toper structure, carries out the wedge gomphosis with metal flange to combine axial limit structure and chemical hookup, not only simple process makes insulating axle and metal flange's being connected more reliable moreover.
Preferably, the inner surface of the end of the insulating shaft is provided with first circumferential grooves extending in the circumferential direction and arranged at intervals in the axial direction, the outer surface of the axial portion of the metal flange is provided with second circumferential grooves extending in the circumferential direction and arranged at intervals in the axial direction, and the first circumferential grooves and the second circumferential grooves are staggered in the axial direction; the outer end face of the insulating shaft is in axial limit fit with the radial part of the metal flange; the chemical coupling intermediate is filled in the first circumferential groove and the second circumferential groove; and/or the presence of a gas in the atmosphere,
the inner surface of the end part of the insulating shaft is provided with first axial grooves which extend along the axial direction and are arranged at intervals along the circumferential direction, the outer surface of the axial part of the metal flange is provided with second axial grooves which extend along the axial direction and are arranged at intervals along the circumferential direction, and the first axial grooves and the second axial grooves are staggered along the circumferential direction; the outer end face of the insulating shaft is in axial limit fit with the radial part of the metal flange; the chemical coupling intermediate fills in the first axial groove and the second axial groove.
The utility model discloses an axial recess and/or circumference recess fill chemistry hookup midbody, the interlock that makes the fitting surface between insulating axle and the metal flange can go deeper for the intensity of chemistry hookup is better.
Preferably, the outer surface of the end part of the insulating shaft is provided with first axial convex keys which extend along the axial direction and are arranged at intervals along the circumferential direction, the inner surface of the axial part of the metal flange is provided with first axial key grooves which extend along the axial direction and are arranged at intervals along the circumferential direction, and the first axial convex keys are correspondingly matched with the first axial key grooves in position; the chemical coupling intermediate is filled in the first axial key groove or coated on the first axial convex key; and/or the presence of a gas in the gas,
the outer surface of the end part of the insulating shaft is provided with second axial key grooves which extend along the axial direction and are arranged at intervals along the circumferential direction, the inner surface of the axial part of the metal flange is provided with second axial convex keys which extend along the axial direction and are arranged at intervals along the circumferential direction, and the positions of the second axial convex keys are correspondingly matched with the positions of the second axial key grooves; the chemical coupling intermediate body is filled in the second axial key groove or coated on the second axial convex key.
The utility model discloses a keyway complex structural connection combines together with the chemical hookup of chemical hookup midbody for insulating axle is better with metal flange's joint strength.
Preferably, the outer surface of the end part of the insulating shaft is provided with a second outer conical surface, and the inner surface of the axial part of the metal flange is provided with a second inner conical surface matched with the second outer conical surface; the outer end of the second inner conical surface is also provided with a radial blocking edge for axially limiting the end part of the second outer conical surface; the chemical coupling intermediate is coated on the second outer conical surface and/or the second inner conical surface.
The utility model discloses an adopt the cooperation of the internal and external conical surface between insulating axle and the metal flange to assist the bonding effect who radially keeps off the spacing and chemical hookup midbody of axial on edge, not only can guarantee joint strength, it is more convenient to assemble moreover.
Preferably, the insulating shaft is of a net structure, and the glass fibers are wound in a forward direction and wound in a reverse direction and are crossed to form the net structure; the winding directions of the same winding layers are the same, and the winding directions of two adjacent winding layers are opposite; the winding angle ranges from 0 degrees to 180 degrees, preferably 45 degrees; the thickness of the tube wall of the insulating shaft ranges from 4 mm to 10 mm.
The utility model discloses a positive reverse alternately winding mode forms network structure's insulating axle, not only can be according to product strength demand adjustment winding angle, and network structure is more reliable and more stable moreover.
Adopt the utility model discloses the scheme can enough guarantee the bulk strength of transmission shaft, can effectively reduce the harm of axle current again.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:
fig. 1 is a schematic perspective sectional view of a transmission shaft according to a first embodiment of the present invention;
FIG. 2 is a front cross-sectional view of FIG. 1;
FIG. 3 is a perspective view of a metal flange of the drive shaft of FIG. 1;
fig. 4 is a schematic perspective sectional view of a transmission shaft according to a second embodiment of the present invention;
fig. 5 is a schematic perspective exploded view of a transmission shaft according to a second embodiment of the present invention;
FIG. 6 is a sectional structural view of a metal flange of the propeller shaft of FIG. 5 (annular groove);
FIG. 7 is a cross-sectional structural view of a metal flange of the propeller shaft of FIG. 5 (circumferential groove + axial groove);
fig. 8 is a schematic perspective exploded view of a transmission shaft according to a third embodiment of the present invention;
fig. 9 is a schematic perspective sectional view of a transmission shaft according to a fourth embodiment of the present invention;
FIG. 10 is a front cross-sectional view of FIG. 9;
fig. 11 is a schematic view of a manufacturing method of the transmission shaft according to the present invention;
FIG. 12 is a schematic view of the construction of the insulating shaft blank after the rotating mandrel has been withdrawn;
FIG. 13 is a schematic view of a rotary mandrel configuration;
FIG. 14 is a schematic view of an assembly mechanism for assembling the insulated shaft with the metal flange;
FIG. 15 is a schematic view of a testing mechanism for non-destructive testing of the acceptability of the assembly of the transmission shaft having been assembled.
In the figure:
10-an insulated shaft;
20-a metal flange; 21-an axial portion; 22-a radial portion;
11-a first external conical surface; 12-a first inner conical surface; 13-a first circumferential groove; a first axial groove (not shown); 14-a second external conical surface; 15-a first axially projecting key; 16-second axial keyway;
211-annular groove; 212-a limit end face; 213-a second circumferential groove; 214-second axial groove; 215-a second inner conical surface; 216-radial ledge; 217-first axial keyway; 218-second axial stud;
a first axial convex key 15; a first axial keyway 217;
a second axial keyway 16; a second axial tab 218;
30-storage racks; 31-glass fibers; 40-a soaking pool; 50-rotating the mandrel; 60-a separation comb; 70-guide roller.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention to be solved clearer and more obvious, the present invention is further explained in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The utility model relates to a high-strength insulated transmission shaft for a high-power wind driven generator, which comprises an insulated shaft 10 and a metal flange 20; the insulating shaft 10 is formed by winding glass fiber, and the outer layer of the glass fiber is coated with an epoxy resin layer; the metal flange 20 includes an axial portion 21 and a radial portion 22, and an end portion of the insulated shaft 10 is fitted to the axial portion 21 of the metal flange 20 and fixedly connected thereto through a chemical coupling intermediate body. Preferably, the insulating shaft 10 is a hollow tubular structure, and the outer surface and/or the hollow inner surface of the insulating shaft 10 is/are matched with the axial part 21 of the metal flange 20; the radial portion 22 of the metal flange 20 is used for being connected with other components of the wind turbine, which is not regarded as a technical essential of the present invention and is not described herein. In this embodiment, the epoxy resin is made of a high-strength and high-dielectric constant material.
As a preferred embodiment, the insulating shaft 10 is a net structure, and the glass fibers are formed by crossing forward winding and reverse winding to form the net structure; the winding directions of the same winding layers are the same, and the winding directions of two adjacent winding layers are opposite; the winding angle ranges from 0 to 180 degrees, preferably 45 degrees; the thickness of the pipe wall of the insulating shaft 10 is in the range of 4 mm to 10 mm, and the winding thickness can be adjusted according to the strength requirement. The insulating shaft 10 with the net-shaped structure is formed in a forward and reverse cross winding mode, so that the winding angle can be adjusted according to the strength requirement of a product, and the net-shaped structure is more stable and reliable.
The insulating shaft 10 and the metal flange 20 of the utility model adopt a double connection mode of mechanical connection and chemical connection, and can adopt different connection structures according to different strength requirements, for example, a plurality of structures such as grooves, conical surfaces and key grooves are added on the matching surface, and a double-faced groove, double-faced conical and double-faced key groove structure is preferably adopted; the machining of the matching surface can adopt 120 grains
50 PCD/CVD cutter, or internal/external grinding machine; the metal flange 20 can be made by forging/casting/welding + CNC machining, and any one of the following materials can be adopted for the metal flange 20: 45#, Q345, Q355, 40Cr, etc., according to different applicable environmental requirements. The following is a detailed description of preferred embodiments, but not limited thereto.
First embodiment (double-sided taper structure)
As shown in fig. 1 to 3, in this embodiment, the outer surface of the end of the insulating shaft 10 is provided with a first outer conical surface 11, the inner surface of the end of the insulating shaft 10 is provided with a first inner conical surface 12, the chemical coupling intermediate is coated on the first outer conical surface 11 and the first inner conical surface 12, and the inner conical surface and the outer conical surface are combined to form a wedge-shaped structure; the axial portion 21 of the metal flange 20 is provided with an annular groove 211 extending in the axial direction; the annular groove 211 is a wedge-shaped groove matched with the wedge-shaped structure of the insulating shaft 10, and the outer end of the wedge-shaped groove is closed to form a limiting end surface 212 so as to axially limit the end of the insulating shaft 10.
The cross section of the open end of the annular groove 211 of the metal flange 20 gradually decreases towards the closed end, and keeps synchronous with the gradual size of the cross section of the wedge-shaped structure of the insulating shaft 10, so that high matching degree is ensured; the stop end surface 212 of the closed end only has a small wall thickness to ensure that the annular groove 211 is deep enough to fit the insulated shaft 10.
Preferably, in the axial portion 21 of the metal flange 20, the wall thickness of the annular outer wall outside the annular groove 211 and the wall thickness of the annular inner wall inside the annular groove 211 are substantially the same.
The insulating shaft 10 of the embodiment adopts a double-sided conical structure, is embedded with the metal flange 20 in a wedge shape, and combines an axial limiting structure and chemical connection, so that the process is simple, and the connection between the insulating shaft 10 and the metal flange 20 is more reliable.
Second embodiment (double-sided groove: circumferential groove and/or axial groove)
As shown in fig. 4 to 6, in the present embodiment, the inner surface of the end of the insulating shaft 10 is provided with first circumferential grooves 13 extending in the circumferential direction and arranged at intervals in the axial direction, the outer surface of the axial portion 21 of the metal flange 20 is provided with second circumferential grooves 213 extending in the circumferential direction and arranged at intervals in the axial direction, and the first circumferential grooves 13 and the second circumferential grooves 213 are axially staggered; the outer end face of the insulating shaft 10 is in axial limit fit with the radial part 22 of the metal flange 20; the chemical coupling intermediate is filled in the first circumferential groove 13 and the second circumferential groove 213.
As shown in fig. 7, in this embodiment, on the basis of the circumferential groove structure, an axial groove may be added, or only an axial groove may be provided. Specifically, the method comprises the following steps: the inner surface of the end of the insulated shaft 10 is provided with first axial grooves (not shown in the figure) extending along the axial direction and arranged at intervals along the circumferential direction, the outer surface of the axial part 21 of the metal flange 20 is provided with second axial grooves 214 extending along the axial direction and arranged at intervals along the circumferential direction, and the first axial grooves (not shown in the figure) and the second axial grooves 214 are staggered along the circumferential direction; the outer end face of the insulating shaft 10 is in axial limit fit with the radial part 22 of the metal flange 20; the chemical coupling intermediate fills in the first axial groove (not shown) and the second axial groove 214.
The present embodiment uses the axial grooves and/or the circumferential grooves to fill the intermediate chemical coupling body, so that the mating surface between the insulated shaft 10 and the metal flange 20 can be engaged more deeply, and the strength of the chemical coupling is better.
Third embodiment (Key groove structure)
As shown in fig. 8, in the present embodiment, the outer surface of the end portion of the insulating shaft 10 is provided with first axial convex keys 15 extending in the axial direction and arranged at intervals in the circumferential direction, the inner surface of the axial portion 21 of the metal flange 20 is provided with first axial key slots 217 extending in the axial direction and arranged at intervals in the circumferential direction, and the first axial convex keys are correspondingly matched with the first axial key slots; the chemical coupling intermediate is filled in the first axial key groove or coated on the first axial convex key.
Meanwhile, a second axial key groove 16 may be formed on the outer surface of the end of the insulating shaft 10, and may be spaced apart from the first axial key or may be separately formed; and correspondingly a corresponding second axial key 218 is provided on the inner surface of the axial portion 21 of the metal flange 20, which second axial key may be spaced from the first axial key groove or may be provided separately. Specifically, the method comprises the following steps: the outer surface of the end part of the insulating shaft 10 is provided with second axial key grooves which extend along the axial direction and are arranged at intervals along the circumferential direction, the inner surface of the axial part 21 of the metal flange 20 is provided with second axial convex keys which extend along the axial direction and are arranged at intervals along the circumferential direction, and the second axial convex keys are correspondingly matched with the second axial key grooves; the chemical coupling intermediate body is filled in the second axial key groove or coated on the second axial convex key.
The utility model discloses a keyway complex structural connection combines together with the chemical hookup of chemical hookup midbody for insulating axle 10 is better with metal flange 20's joint strength.
Fourth embodiment (taper fitting in combination with the second or third embodiment)
As shown in fig. 9 and 10, in this embodiment, the outer surface of the end portion of the insulating shaft 10 is provided with a second outer tapered surface 14, and the inner surface of the axial portion 21 of the metal flange 20 is provided with a second inner tapered surface 215 matching with the second outer tapered surface 14; the outer end of the second inner conical surface 215 is further provided with a radial stop edge 216 for axially limiting the end of the second outer conical surface 14; the chemical coupling intermediates are applied to the second outer tapered surface 14 and/or the second inner tapered surface 215.
The utility model discloses an adopt the cooperation of the internal and external conical surface between insulating axle 10 and the metal flange 20 to with the combination of second embodiment or third embodiment, the bonding effect of the axial spacing and the chemical hookup midbody that assists radially keeping off the edge again not only can guarantee joint strength, and the equipment is more convenient moreover.
As shown in fig. 11, the method for manufacturing a high strength insulated transmission shaft for a high power wind power generator according to the above embodiments of the present invention includes the following steps:
adding an epoxy resin soak solution into the soaking pool 40;
connecting one end of the glass fiber 31 to a rotary mandrel 50 from a storage rack 30 after passing through a soaking pool 40;
driving the rotating mandrel 50 to rotate so as to drive the soaked glass fiber to be wound on the rotating mandrel 50;
heating the wound cylinder barrel and the rotating mandrel 50 to obtain a solidified molding barrel;
withdrawing or ejecting the rotating mandrel 50 (shown in fig. 13) from the curing and forming cylinder to obtain a blank of the insulated shaft 10 (shown in fig. 12);
grinding the blank of the insulating shaft 10 to a required size, cutting to a required length, and machining to obtain the connecting structure of each embodiment, so as to obtain a finished product of the insulating shaft 10; as a preferred embodiment, the finished product of the insulating shaft 10 is further sprayed with an epoxy resin spraying liquid, and the formula of the epoxy resin spraying liquid is as follows: epoxy resin: curing agent: diluent 4: 1:1 to 2: 1:1, thereby making the insulating effect of the insulating shaft better.
Coating a chemical coupling intermediate on the matching surface of the finished insulating shaft 10 and/or the metal flange 20, and assembling the insulating shaft 10 and the metal flange 20 (assembling the insulating shaft 10 and the metal flange 20 to a required size by a assembling machine shown in fig. 14), thereby completing the solidification coupling;
and taking down the transmission shaft which is assembled from the assembling machine to complete the manufacturing and assembling of the transmission shaft.
Preferably, before the glass fiber 31 enters the soaking pool 40 from the storage rack 30, the glass fiber 31 is further defibered by a defibering comb 60 to be more fully soaked, and a yarn guide roller 70 is disposed before and/or after the soaking process.
In this embodiment, a curing agent is further added into the soaking pool 40 and mixed with the epoxy resin, and the ratio of the epoxy resin to the curing agent is 3: 1 to 1:1, for example, can be 3: 1 or 2:1 or 1: 1; in addition, 1% -5% of accelerator or 30% -70% of filler is added into the soaking pool 40 for reinforced mixing. In this embodiment, the epoxy resin may be a resin such as phenol, the curing agent may be imidazole aldehyde, the accelerator may be a tertiary amine, and the filler may be alumina or silica.
In this embodiment, the soaked glass fiber is wound on the rotating mandrel 50, and the winding method thereof adopts: the glass fiber is firstly wound on the innermost layer of the rotating mandrel 50 by 0 degree, then wound on the second layer of the rotating mandrel 50 by 45 degrees along the positive direction, and then wound on the third layer of the rotating mandrel 50 by 45 degrees along the reverse direction, and then wound on the fourth layer of the rotating mandrel 50 by 45 degrees along the positive direction, and then wound on the fifth layer of the rotating mandrel 50 by 45 degrees along the reverse direction, and the steps are repeated and crossed for winding in such a way until the preset thickness is reached, and finally wound on the outermost layer of the rotating mandrel 50 by 0 degree to form a cylinder barrel with a reticular structure; wherein the innermost layer or the outermost layer comprises a range of 1 to 3 layers.
Adopt the utility model discloses a manufacturing method can enough guarantee the bulk strength of transmission shaft, can effectively reduce the harm of axle current again. The innermost layer of the insulating shaft 10 is formed by winding glass fiber at 0 degree, so that the inner diameter size can be ensured; the outermost layer is formed by winding glass fiber at 0 degree, so that the appearance can be ensured, and the outer diameter machining allowance can be reserved conveniently; the intermediate level adopts alternately winding, can guarantee the reliable stable in structure of intensity.
The transmission shaft of each embodiment meets the qualification nondestructive testing requirement and the strength conformance requirement by using industrial X-ray or ultrasonic nondestructive testing equipment (shown in figure 15) to carry out qualification nondestructive testing on the assembly condition and using a torsion and tension sensor to carry out strength conformance testing on the transmission shaft.
It should be noted that, in this specification, each embodiment is described in a progressive manner, and each embodiment focuses on differences from other embodiments, and portions that are the same as and similar to each other in each embodiment may be referred to.
While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A high-strength insulation transmission shaft for a high-power wind driven generator is characterized by comprising an insulation shaft and a metal flange; the insulating shaft is formed by winding glass fibers, and the outer layer of the glass fibers is further coated with an epoxy resin layer; the metal flange comprises an axial part and a radial part, and the end part of the insulating shaft is matched with the axial part of the metal flange and is fixedly connected through a chemical connecting intermediate body.
2. The high strength insulated drive shaft for high power wind power generator according to claim 1, characterized in that: the insulating shaft is of a hollow tubular structure, and the outer surface and/or the hollow inner surface of the insulating shaft are/is matched with the axial part of the metal flange.
3. The high strength insulated drive shaft for high power wind power generator according to claim 2, characterized in that: the outer surface of the end part of the insulating shaft is provided with a first outer conical surface, the inner surface of the end part of the insulating shaft is provided with a first inner conical surface, the chemical connecting intermediate is coated on the first outer conical surface and the first inner conical surface, and the inner conical surface and the outer conical surface are combined to form a wedge-shaped structure; the axial part of the metal flange is provided with an annular groove extending along the axial direction; the annular groove is a wedge-shaped groove matched with the wedge-shaped structure of the insulating shaft, and the outer end of the wedge-shaped groove is sealed to form a limiting end face so as to axially limit the end part of the insulating shaft.
4. The high strength insulated drive shaft for high power wind power generator according to claim 2, characterized in that: the inner surface of the end part of the insulating shaft is provided with first circumferential grooves which extend along the circumferential direction and are arranged at intervals along the axial direction, the outer surface of the axial part of the metal flange is provided with second circumferential grooves which extend along the circumferential direction and are arranged at intervals along the axial direction, and the first circumferential grooves and the second circumferential grooves are staggered along the axial direction; the outer end face of the insulating shaft is in axial limit fit with the radial part of the metal flange; the chemical coupling intermediate is filled in the first circumferential groove and the second circumferential groove; and/or the presence of a gas in the atmosphere,
the inner surface of the end part of the insulating shaft is provided with first axial grooves which extend along the axial direction and are arranged at intervals along the circumferential direction, the outer surface of the axial part of the metal flange is provided with second axial grooves which extend along the axial direction and are arranged at intervals along the circumferential direction, and the first axial grooves and the second axial grooves are staggered along the circumferential direction; the outer end face of the insulating shaft is in axial limit fit with the radial part of the metal flange; the chemical coupling intermediate is filled in the first axial groove and the second axial groove.
5. The high strength insulated drive shaft for high power wind power generator according to claim 2, characterized in that: the outer surface of the end part of the insulating shaft is provided with first axial convex keys which extend along the axial direction and are arranged at intervals along the circumferential direction, the inner surface of the axial part of the metal flange is provided with first axial key grooves which extend along the axial direction and are arranged at intervals along the circumferential direction, and the first axial convex keys are correspondingly matched with the first axial key grooves in position; the chemical coupling intermediate is filled in the first axial key groove or coated on the first axial convex key; and/or the presence of a gas in the gas,
the outer surface of the end part of the insulating shaft is provided with second axial key grooves which extend along the axial direction and are arranged at intervals along the circumferential direction, the inner surface of the axial part of the metal flange is provided with second axial convex keys which extend along the axial direction and are arranged at intervals along the circumferential direction, and the second axial convex keys are correspondingly matched with the second axial key grooves; the chemical coupling intermediate is filled in the second axial key groove or coated on the second axial convex key.
6. The high strength insulated drive shaft for high power wind power generator according to claim 2, characterized in that: the outer surface of the end part of the insulating shaft is provided with a second outer conical surface, and the inner surface of the axial part of the metal flange is provided with a second inner conical surface matched with the second outer conical surface; the outer end of the second inner conical surface is also provided with a radial blocking edge for axially limiting the end part of the second outer conical surface; the chemical coupling intermediate is coated on the second outer conical surface and/or the second inner conical surface.
7. The high strength insulated transmission shaft for a high power wind power generator according to any one of claims 1 to 6, wherein: the insulating shaft is of a net structure, and the glass fibers are wound in a forward direction and wound in a reverse direction and are crossed to form the net structure; the winding directions of the same winding layers are the same, and the winding directions of two adjacent winding layers are opposite; the winding angle ranges from 0 degree to 180 degrees; the insulating shaft has a wall thickness in the range of 4 mm to 10 mm.
8. The high strength insulated drive shaft for high power wind power generator according to claim 7, characterized in that: the winding angle is 45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220184432.2U CN217055923U (en) | 2022-01-24 | 2022-01-24 | High-strength insulating transmission shaft for high-power wind driven generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220184432.2U CN217055923U (en) | 2022-01-24 | 2022-01-24 | High-strength insulating transmission shaft for high-power wind driven generator |
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| CN217055923U true CN217055923U (en) | 2022-07-26 |
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| CN202220184432.2U Active CN217055923U (en) | 2022-01-24 | 2022-01-24 | High-strength insulating transmission shaft for high-power wind driven generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114439842A (en) * | 2022-01-24 | 2022-05-06 | 厦门牢力实业有限公司 | High-strength insulating transmission shaft for high-power wind driven generator and manufacturing method thereof |
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2022
- 2022-01-24 CN CN202220184432.2U patent/CN217055923U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114439842A (en) * | 2022-01-24 | 2022-05-06 | 厦门牢力实业有限公司 | High-strength insulating transmission shaft for high-power wind driven generator and manufacturing method thereof |
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