Wind driven generator impeller main shaft structure with flywheel

Abstract

The utility model discloses a wind driven generator impeller main shaft structure with a flywheel, which comprises a shaft body with one end being a flange connecting end; the flywheel is arranged on the shaft body in a sleeving mode and is arranged close to the flange connecting end of the shaft body, through the arrangement of the flywheel, energy storage can be conducted on the speed generated by the shaft body rotating at a high speed, when the rotating speed of the shaft body is low, the speed is released through the flywheel, and therefore the rotating efficiency of the shaft body is improved; each limiting assembly is composed of a limiting piece and a locking piece, and the limiting pieces are arranged on the shaft body in a rotating mode and attached to the end face of the flywheel; according to the utility model, the flywheel is additionally arranged on the main shaft, and the flywheel is used as an efficient energy storage element, so that the rotating speed of the wind driven generator can be increased under the assistance of the rotating inertia of the flywheel when the wind power condition is not good enough, and the rotating speed of the generator can be effectively increased to meet the standard of grid connection requirements even if the wind speed is slightly lower than the cut-in wind speed; therefore, grid-connected power generation is smoothly realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of wind driven generators, and particularly relates to a wind driven generator impeller main shaft structure with a flywheel. BACKGROUND

[0002] As an important part of the renewable energy field, the performance optimization of a wind driven generator set has always been the focus of technological innovation. Generally speaking, the cut-in wind speed of the wind driven generator set design is set to 3 meters per second, which is the basic threshold for starting the power generation process. However, in actual operation, especially in light wind weather, the wind speed often hovers around 3 meters per second. In this case, the grid-connected power generation effect of the wind driven generator set is not satisfactory, and the power generation efficiency is low, which affects the effective collection and utilization of energy. SUMMARY

[0003] The utility model aims at providing a wind driven generator impeller main shaft structure with a flywheel to solve the problem of poor power generation effect of the existing wind driven generator set in light wind weather as proposed in the background.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a wind driven generator impeller main shaft structure with a flywheel, comprising a shaft body, one end of which is a flange connection end; further comprising a flywheel, which is sleeved on the shaft body and is arranged adjacent to the flange connection end of the shaft body. Through the arrangement of the flywheel, the speed generated by the high-speed rotating shaft body can be stored, and when the rotating speed of the shaft body is low, the flywheel is released, thereby improving the rotating efficiency of the shaft body and achieving the purpose of improving the power generation efficiency; two sets of limiting assemblies are composed of a limiting piece and a locking piece, wherein the limiting piece is rotatably arranged on the shaft body and is in contact with the end face of the flywheel; the locking piece is sleeved on one end of the limiting piece away from the shaft body, and the end portion of the locking piece gradually approaches the end portion of the limiting piece to deform the end of the limiting piece and tightly contact the surface of the shaft body, thereby realizing the stable installation of the entire limiting assembly and the shaft body and achieving the limiting effect of the flywheel.

[0005] Preferably, the limiting piece is a limiting ring, a threaded portion is formed in the inner wall of one end of the limiting ring, a thread is formed in the outer surface of the connection area of the shaft body and the flywheel, and the threaded portion is connected with the thread at the outer surface of the shaft body, thereby realizing the connection of the shaft body and the limiting ring and achieving the tight limiting of the flywheel, ensuring that the position of the flywheel on the shaft body does not change and realizing the synchronous rotation of the flywheel and the shaft body.

[0006] Preferably, the other end of the limiting ring is fixedly provided with an integrated fitting ring, a plurality of deformation grooves are formed in the end portion of the fitting ring at equal angles, and the locking piece is sleeved outside the fitting ring. Through the locking of the locking piece itself, the fitting ring is deformed and tightly contacts the outer surface of the shaft body, thereby realizing the stable installation of the shaft body and the limiting ring.

[0007] Preferably, the outer surface of the fitting ring is also provided with a ring groove, and the locking member is arranged in the ring groove, so that the locking member is prevented from moving slightly.

[0008] Preferably, the locking member is a locking ring, the locking ring has an opening, and the opening region extends horizontally towards the outside of the limiting ring, a locking screw is arranged through the horizontal extension region of the locking ring, and locking nuts are arranged at both ends of the locking screw, the locking nuts abut against the outer surface of the horizontal extension region of the locking ring, and in the locking, the opening distance of the locking ring is reduced by rotating the locking nuts, so that the locking ring is pressed against the fitting ring, the fitting ring is tightly connected with the outer surface of the shaft body, and the installation stability of the limiting ring and the shaft body is improved.

[0009] Preferably, the outer diameter of the flywheel is greater than the diameter of the end face of the flange connecting end of the shaft body, and the flywheel and the shaft body are coaxially arranged.

[0010] Preferably, the fitting ring is in the shape of a neck, so that the fitting ring can be better fitted with the surface of the shaft body, and the longitudinal section of the whole is in the shape of an inclination, the inner side depth of the ring groove is equal to the thickness of the locking ring.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] In the utility model, the flywheel is additionally arranged on the main shaft, the flywheel is used as a kind of high-efficiency energy storage element, can utilize its rotational inertia to assist to improve the rotating speed of wind driven generator when wind force condition is poor, so that even in the case where wind speed is slightly lower than cut-in wind speed, the rotating speed of generator can be effectively improved to meet the standard of grid connection, to smoothly realize grid connection power generation, this technical improvement not only significantly reduces the actual cut-in wind speed threshold of wind driven generator set, but also promotes the corresponding reduction of fan rated wind speed, so that wind driven generator can efficiently operate in a wider wind speed range, even in the scene where wind power resource is relatively scarce, wind driven generator set can also maintain high power generation efficiency, effectively broadens the application scene of wind power generation, and enhances its adaptability to different climate conditions. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the utility model;

[0014] Figure 2 It is a rear view of the utility model;

[0015] Figure 3 It is a structural schematic view of the limiting assembly of the utility model;

[0016] Figure 4 It is a structural schematic view of the limiting ring of the utility model;

[0017] Figure 5 Figure is a structure diagram of the locking ring of the utility model.

[0018] In the figure,

[0019] 100, shaft body; 101, limiting ring; 102, locking ring; 103, locking screw; 104, locking nut; 105, deformation groove; 106, threaded portion; 107, abutting ring; 108, ring groove;

[0020] 200, flywheel. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be apparently and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figures 1 to 5 The utility model provides a kind of technical solutions: a wind driven generator impeller main shaft structure with flywheel, comprising

[0023] Shaft body 100, one end is flange connection end;

[0024] Further comprising

[0025] Flywheel 200, the flywheel 200 is set on shaft body 100, and is close to the flange connection end of shaft body 100, by the setting of flywheel 200, the speed generated by high-speed rotating shaft body 100 can be stored energy, and when the rotating speed of shaft body 100 is lower, it is released by flywheel 200, so as to improve the rotating efficiency of shaft body 100, to improve the purpose of power generation efficiency;

[0026] Two groups of limiting components are formed by limiting member and locking member, wherein

[0027] Limiting member is rotatably arranged on shaft body 100, and is abutted with the end surface of flywheel 200;

[0028] Locking member is set on the end of limiting member away from shaft body 100, and the end of the locking member is gradually extruded to the end of limiting member, so that the end of limiting member is deformed, and is abutted with the surface of shaft body 100, so as to realize the stable installation of the whole limiting component and shaft body 100, and achieve the limiting effect of flywheel 200.

[0029] In the embodiment, preferably, the limiting part is a limiting ring 101, a threaded part 106 is formed on the inner wall of one end of the limiting ring 101, and a thread is formed on the outer surface of the connecting area of the shaft body 100 and the flywheel 200; the threaded part 106 is connected with the thread on the outer surface of the shaft body 100, thereby realizing the connection of the shaft body 100 and the limiting ring 101, and realizing the abutting limiting of the flywheel 200, so as to ensure that the position of the flywheel 200 on the shaft body 100 does not change, and realize the synchronous rotation of the flywheel 200 and the shaft body 100.

[0030] In the embodiment, preferably, the other end of the limiting ring 101 is fixedly provided with an integrated fitting ring 107, a plurality of deformation grooves 105 are formed at equal angles on the end of the fitting ring 107, and a locking part is sleeved outside the fitting ring 107; the fitting ring 107 is forced to deform by the locking of the locking part itself, and abuts on the outer surface of the shaft body 100, so as to realize the stable installation of the shaft body 100 and the limiting ring 101.

[0031] In the embodiment, preferably, the outer surface of the fitting ring 107 is also provided with a ring groove 108, and the locking part is arranged in the ring groove 108, so as to avoid the displacement of the locking part.

[0032] In the embodiment, preferably, the locking part is a locking ring 102, the locking ring 102 has an opening, and the opening area extends horizontally towards the outside of the limiting ring 101; a locking screw 103 penetrates through the horizontally extending area of the locking ring 102, and locking nuts 104 are arranged at the two ends of the locking screw 103; the locking nuts 104 abut on the outer surface of the horizontally extending area of the locking ring 102; in the locking, the opening distance of the locking ring 102 is reduced by rotating the locking nuts 104, so that the fitting ring 107 is pressed by the locking ring 102, and the outer surface of the shaft body 100 is tightly connected with the fitting ring 107, thereby improving the installation stability of the limiting ring 101 and the shaft body 100.

[0033] In the embodiment, preferably, the outer diameter of the flywheel 200 is greater than the diameter of the end face of the flange connecting end of the shaft body 100, and the flywheel 200 and the shaft body 100 are coaxially arranged.

[0034] In the embodiment, preferably, the fitting ring 107 is in the shape of a neck, so as to better fit the surface of the shaft body 100, and the overall longitudinal section is in the shape of an inclination; the inner side depth of the ring groove 108 is equal to the thickness of the locking ring 102.

[0035] Although the embodiments of the utility model have been shown and described (see the above detailed description), it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A wind turbine impeller main shaft structure with a flywheel, comprising a shaft body (100) with a flange connection end; characterized in that further comprising a flywheel (200) sleeved on the shaft body (100) and arranged adjacent to the flange connection end of the shaft body (100); two sets of limiting assemblies composed of a limiting piece and a locking piece, wherein the limiting piece is rotatably arranged on the shaft body (100) and abuts against the end face of the flywheel (200); the locking piece is sleeved on one end of the limiting piece away from the shaft body (100), and the end portion of the locking piece gradually approaches and extrudes the end portion of the limiting piece.

2. A wind turbine with flywheel rotor shaft structure according to claim 1, characterized in that: the limiting piece is a limiting ring (101), one end of which is provided with a threaded portion (106) on the inner wall, the outer surface of the connection area of the shaft body (100) and the flywheel (200) is provided with a thread, and the threaded portion (106) is connected with the thread on the outer surface of the shaft body (100).

3. The wind turbine generator wheel shaft structure with a flywheel according to claim 2, characterized in that: the other end of the limiting ring (101) is fixedly provided with an integral abutting ring (107), the end portion of the abutting ring (107) is provided with a plurality of deformation grooves (105) at equal angles, and the locking piece is sleeved on the outside of the abutting ring (107).

4. The wind turbine generator wheel shaft structure with a flywheel according to claim 3, characterized in that: the outer surface of the abutting ring (107) is further provided with a ring groove (108), and the locking piece is arranged in the ring groove (108).

5. A wind turbine generator wheel shaft structure with a flywheel according to claim 4, characterized in that: the locking piece is a locking ring (102), the locking ring (102) itself has an opening, and the opening area extends horizontally towards the outside of the limiting ring (101), a locking screw (103) penetrates the horizontally extending area of the locking ring (102), and the two ends of the locking screw (103) are rotatably provided with locking nuts (104) which abut against the outer surface of the horizontally extending area of the locking ring (102).

6. The wind turbine generator wheel shaft structure with a flywheel according to claim 1, characterized in that: the outer diameter of the flywheel (200) is greater than the end face diameter of the flange connection end of the shaft body (100), and the flywheel (200) and the shaft body (100) are coaxially arranged.

7. The wind turbine generator wheel shaft structure with a flywheel according to claim 5, characterized in that: the abutting ring (107) is in the shape of a necked opening, and the overall longitudinal section is in the shape of an inclination, the inner side depth of the ring groove (108) is equal to the thickness of the locking ring (102).

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