A new type of prefabricated nacelle cover for wind power generation

Abstract

The present invention discloses a novel assembled nacelle for wind power generation, which comprises a mold outer shell, a hub outer cover, and a pressing and rotating assembly mechanism; in the present invention, a pressing ring body is used as an intermediate carrier between the mold outer shell and the hub outer cover, so that a non-contact rotating seal assembly is realized between the hub outer cover and the mold outer shell. The hub outer cover and the pressing ring body are rotationally assembled, and the pressing ring body and the mold outer shell are hermetically assembled, realizing a rotating seal assembly, achieving rapid disassembly and installation, and at the same time, the sealing performance is more durable.

Description

Technical Field

[0001] The present invention relates to a new type of prefabricated nacelle for wind power generation. Background Art

[0002] Wind power generation refers to converting the kinetic energy of wind into mechanical kinetic energy and then into electrical kinetic energy, which is wind power generation. The specific principle of wind power generation is to use the wind to drive the rotation of the windmill blades, and then increase the rotation speed through a speed increaser to prompt the generator to generate electricity. According to the current windmill technology, a breeze speed of about three meters per second can start generating electricity. Wind power generation is forming a boom in the world. The existing nacelle structure for wind power generation generally includes a mold outer shell and a hub outer cover. Generally, multiple wind power blades are installed around the hub outer cover, and the end of the hub outer cover is rotatably connected to one end of the mold outer shell. The hub outer cover not only needs to be rotatably connected to one end of the mold outer shell, but also needs to ensure sealing. The general structure is to directly rotatably snap the hub outer cover and the mold outer shell, and the disassembly and assembly are relatively cumbersome. And a sealing ring is provided between the hub outer cover and the mold outer shell. After a period of operation, the sealing ring between the hub outer cover and the mold outer shell is deformed due to rotational friction, resulting in poor sealing performance, and the replacement and maintenance are very difficult. Summary of the Invention

[0003] Aiming at the deficiencies of the above-mentioned prior art, the problem solved by the present invention is to provide a new type of prefabricated nacelle for wind power generation that is convenient for assembly and disassembly, has a good sealing effect, and has a long-lasting sealing performance.

[0004] To solve the above problems, the technical solutions adopted by the present invention are as follows:

[0005] A novel assembled wind turbine nacelle cover comprises a mold outer shell, a hub outer shell, and a pressing and rotating assembly mechanism; the pressing and rotating assembly mechanism is installed between the mold outer shell and the hub outer shell; the pressing and rotating assembly mechanism comprises an outer rotating ring body, a pressing ring body, a positioning convex ring, a rotating stud, and an annular sealing ring; the outer rotating ring body is installed around the end of the hub outer shell; the pressing ring body is installed on the inner side of the outer rotating ring body, and the outer rotating ring body is rotatably engaged with the pressing ring body; a plurality of threaded channels are arranged around the pressing ring body; a positioning convex ring is installed around one end of the mold outer shell; the pressing ring body is axially slidably engaged with the outer side of the positioning convex ring; the pressing ring An annular sealing ring is respectively installed on the outer side and the inner side of the outer end face; an annular driving groove is opened on the outer side of the outer mold shell, and a plurality of connection channels are arranged at one end of the annular driving groove, and the connection channels extend to the edge of one end of the outer mold shell; a rotating stud is respectively rotatably installed in the connection channels, and the outer end of the rotating stud extends to the outside of one end of the outer mold shell, and the inner end of the rotating stud is located on the annular driving groove; the outer ends of the rotating studs are respectively threadedly screwed with the threaded channels of the pressure ring body, and the rotating studs rotate to drive the pressure ring body to slide axially on the outer side around the positioning convex ring, and the pressure ring body drives the annular sealing ring to press against the end face of the outer mold shell to form a sealing structure.

[0006] Furthermore, it also includes a synchronous drive mechanism; the synchronous drive mechanism includes a gear block, an internal gear ring body, a positioning screw, a locking threaded ring, and a rotation limit ring body; a gear block is respectively installed on the inner end of the rotating stud, and the outer sides of the multiple gear blocks are engaged with an internal gear ring body, multiple positioning screws are evenly installed on one end of the internal gear ring body, and a rotation limit ring body is jointly installed on the outer ends of the multiple positioning screws, and a locking threaded ring is threadedly screwed on the positioning screws, and limit ring grooves are provided around the inner side of the annular drive groove, the rotation limit ring body is rotatably clamped on the limit ring groove, and the locking thread ring is rotatably pressed or separated on the positioning screw to be connected to the side wall of the annular drive groove.

[0007] Furthermore, the outer ends of the gear blocks are respectively provided with rotation positioning rods, and the ends of the rotation positioning rods are respectively rotationally engaged with the side walls of the annular driving groove.

[0008] Furthermore, a pressing groove is provided at the other end of the inner gear ring body, and a pressing elastic body is installed in the pressing groove. The two ends of the pressing elastic body are elastically pressed against the pressing groove of the inner gear ring body and the side wall of the annular driving groove.

[0009] Furthermore, the pressing and rotating assembly mechanism also includes a positioning snap-fit ​​ring convex; a positioning snap-fit ​​ring convex is installed on the outer side of the pressing ring body; an annular snap-fit ​​groove is provided on the inner side of the outer rotating ring body; the annular snap-fit ​​groove on the inner side of the outer rotating ring body is rotatably snap-fitted to the positioning snap-fit ​​ring convex; the longitudinal cross-sections of the positioning snap-fit ​​ring convex and the annular snap-fit ​​groove are both T-shaped structures.

[0010] Furthermore, an annular intermediate baffle is provided on the outer sides of the four circumferences of the pressing ring body; the annular intermediate baffle is located on the outer sides of the four circumferences of the positioning clamping ring protrusion.

[0011] Furthermore, a plurality of sliding teeth are provided on the inner sides of the four circumferences of the pressing ring body; a plurality of axial strip-shaped sliding grooves are provided on the outer sides of the four circumferences of the positioning convex ring; the sliding teeth are respectively slidably clamped on the axial strip-shaped sliding grooves.

[0012] Furthermore, the mold outer shell body has an annular structure.

[0013] Furthermore, a sliding ring groove is provided on the outer sides of the four circumferences of the mold outer shell body. The sliding ring groove is arranged on one side of the annular driving groove. Sliding positioning grooves are opened vertically on the sliding ring groove. An annular closed cylinder is sleeved on the sliding ring groove. Positioning protrusions are respectively provided on the upper and lower inner sides of the annular closed cylinder; the positioning protrusions are slidably inserted into the sliding positioning grooves, and pressing springs are respectively arranged in the sliding positioning grooves, and the pressing springs press against one side of the positioning protrusions; a telescopic ring body is provided between the inner end of the sliding ring groove and one end of the annular closed cylinder; a sealing pressing ring is provided at the other end of the annular closed cylinder; the pressing springs press against the positioning protrusions, and the positioning protrusions drive the other end of the annular closed cylinder to move and seal and abut against the outer sides of the four circumferences of one side of the annular driving groove.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. In the present invention, the pressing ring body is used as an intermediate carrier between the mold outer shell body and the hub outer cover, so that a non-contact rotary seal assembly is realized between the hub outer cover and the mold outer shell body. The hub outer cover is rotatably assembled with the pressing ring body, and the pressing ring body is hermetically assembled with the mold outer shell body, realizing a rotary seal assembly, achieving quick disassembly and installation, and at the same time, the sealing performance is more durable.

[0016] 2. During the assembly of the present invention, the hub outer cover is butted and pressed against one end of the mold outer shell body, so that the pressing ring body axially slides on the positioning convex ring. At the same time, the outer end of the rotating stud is butted against the outer end of the threaded channel of the pressing ring body. Then, through the rotation of a plurality of rotating studs, the screw teeth are engaged, so that the rotating studs rotate to drive the pressing ring body to axially slide on the outer sides of the four circumferences of the positioning convex ring. Then, the pressing ring body drives the annular sealing ring at the end to press against the end face of the mold outer shell body, thus forming a sealing structure. An inner annular water retaining groove is formed between the positioning clamping ring protrusion and the annular intermediate baffle, and an outer annular water retaining groove is formed between the annular intermediate baffle and the outer surface of the mold outer shell body. Thus, multiple drainage grooves are formed, and the sealing performance is good.

[0017] 3. The present invention can synchronously drive multiple gear blocks to rotate through the internal tooth ring body in the synchronous drive mechanism, thereby driving multiple rotating studs to rotate, which is convenient and fast for driving. Moreover, by rotating and pressing or separating the locking thread ring on the positioning screw against the side wall of the annular drive groove, the locking and unlocking of the entire structure are realized, and the structural stability is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic cross-sectional structure diagram of the present invention.

[0019] Figure 2 It is a schematic structure diagram of the mold housing and the pressing and rotating assembly mechanism of the present invention.

[0020] Figure 3 For the present invention Figure 2 It is a schematic structure diagram of one side.

[0021] Figure 4 For the present invention Figure 2 It is a schematic structure diagram of the other side.

[0022] Figure 5 It is a schematic cross-sectional structure diagram of the pressing ring body and the positioning convex ring of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following further details the content of the present invention with reference to the drawings.

[0024] As Figures 1 to 5As shown in the figure, a new type of prefabricated nacelle for wind power generation includes a mold outer shell 2, a hub outer cover 1, and a pressing and rotating assembly mechanism 3. The pressing and rotating assembly mechanism 3 is installed between the mold outer shell 2 and the hub outer cover 1. The pressing and rotating assembly mechanism 3 includes an outer rotating ring body 31, a pressing ring body 32, a positioning convex ring 33, a rotating stud 34, and an annular sealing ring 35. The outer rotating ring body 31 is installed around the end of the hub outer cover 1. The pressing ring body 32 is installed on the inner side of the outer rotating ring body 31, and the outer rotating ring body 31 is rotationally clamped with the pressing ring body 32. A plurality of threaded channels 321 are provided around the pressing ring body 32. The positioning convex ring 33 is installed around one end of the mold outer shell 2. The pressing ring body 32 is axially slidably clamped on the outer side of the positioning convex ring 33. An annular sealing ring 35 is installed on the outer side and the inner side of the outer end face of the pressing ring body 32 respectively. An annular driving groove 21 is provided on the outer side of the mold outer shell 2, and a plurality of through channels 22 are provided at one end of the annular driving groove 21. The through channels 22 extend to the edge of one end of the mold outer shell 2. A rotating stud 34 is rotationally clamped and installed in each of the through channels 22. The outer end of the rotating stud 34 extends to the outside of one end of the mold outer shell 2, and the inner end of the rotating stud 34 is located on the annular driving groove 21. The outer end of the rotating stud 34 is threadedly screwed with the threaded channel 321 of the pressing ring body 32. The rotating stud 34 rotates to drive the pressing ring body 32 to axially slide on the outer side of the positioning convex ring 33. The pressing ring body 32 drives the annular sealing ring 35 to press against the end face of the mold outer shell 2 to form a sealing structure. The outer rotating ring body 31, the pressing ring body 32, and the positioning convex ring 33 are all circular ring structures.

[0025] As Figures 1 to 5 shown, in order to improve the convenience of driving, further preferably, a synchronous driving mechanism 4 is further included. The synchronous driving mechanism 4 includes a gear block 41, an internal gear ring body 42, a positioning screw 43, a locking threaded ring 44, and a rotating limiting ring body 45. A gear block 41 is installed at the inner end of each of the rotating studs 34. An internal gear ring body 42 is engaged and connected to the outer sides of the plurality of gear blocks 41. A plurality of positioning screws 43 are evenly installed at one end of the internal gear ring body 42. A rotating limiting ring body 45 is installed at the outer ends of the plurality of positioning screws 43 together. A locking threaded ring 44 is threadedly screwed on each of the positioning screws 43. A limiting ring groove 28 is provided on the inner side around the annular driving groove 21. The rotating limiting ring body 45 is rotationally clamped in the limiting ring groove 28. The locking threaded ring 44 rotates and presses against or separates from the side wall of the annular driving groove 21 on the positioning screw 43.

[0026] As Figures 1 to 5As shown, in order to improve the rotational stability of the gear block 41, further, rotary positioning rods 411 are respectively provided at the outer ends of the gear block 41, and the end portions of the rotary positioning rods 411 are respectively rotatably clamped to the side walls of the annular drive groove 21. Further, a pressing groove is provided at the other end of the internal tooth ring body 42, and a pressing elastic body 421 is respectively installed in the pressing groove. The two ends of the pressing elastic body 421 are respectively elastically pressed against the pressing groove of the internal tooth ring body 42 and the side wall of the annular drive groove 21.

[0027] As Figures 1 to 5 As shown, in order to implement the rotational structure of the outer rotating ring body 31 and the pressing ring body 32, and improve the sealing and drainage performance, further, the pressing and rotating assembly mechanism 3 further includes a positioning and clamping ring protrusion 322; the positioning and clamping ring protrusion 322 is installed on the outer sides of the four circumferences of the pressing ring body 32; an annular clamping groove 311 is provided on the inner sides of the four circumferences of the outer rotating ring body 31; the annular clamping groove 311 on the inner sides of the four circumferences of the outer rotating ring body 31 is rotatably clamped to the positioning and clamping ring protrusion 322; the longitudinal cross-sections of the positioning and clamping ring protrusion 322 and the annular clamping groove 311 are both T-shaped structures. Further, an annular intermediate baffle 323 is provided on the outer sides of the four circumferences of the pressing ring body 32; the annular intermediate baffle 323 is located on the outer sides of the four circumferences of the positioning and clamping ring protrusion 322. An inner annular water retaining groove 91 is formed between the positioning and clamping ring protrusion 322 and the annular intermediate baffle 323, and an outer annular water retaining groove 92 is formed between the annular intermediate baffle 323 and the outer surface of the mold outer shell 2, thus forming multiple drainage grooves with good sealing performance.

[0028] As Figures 1 to 5 As shown, in order to implement the axial sliding fit between the pressing ring body 32 and the positioning convex ring 33, further preferably, a plurality of sliding teeth 324 are provided on the inner sides of the four circumferences of the pressing ring body 32; a plurality of axial strip-shaped sliding grooves 331 are provided on the outer sides of the four circumferences of the positioning convex ring 33; the sliding teeth 324 are respectively slidably clamped to the axial strip-shaped sliding grooves 331. Further, the mold outer shell 2 has an annular structure.

[0029] As Figures 1 to 5As shown, in order to achieve the automatic closing of the annular drive groove 21, further preferably, a sliding ring groove 219 is provided on the outer sides of the four circumferences of the mold outer casing 2. The sliding ring groove 219 is provided on one side of the annular drive groove 21. Sliding positioning grooves 27 are opened on the upper and lower sides of the sliding ring groove 219. An annular closing cylinder 5 is sleeved on the sliding ring groove 219. Positioning protrusions 52 are respectively provided on the upper and lower inner sides of the annular closing cylinder 5; the positioning protrusions 52 are slidably inserted into the sliding positioning grooves 27, and pressing springs 53 are respectively arranged in the sliding positioning grooves 27. The pressing springs 53 press against one side of the positioning protrusions 52; a telescopic ring body 54 is arranged between the inner end of the sliding ring groove 219 and one end of the annular closing cylinder 5; a sealing pressing ring 51 is arranged at the other end of the annular closing cylinder 5; the pressing springs 53 press against the positioning protrusions 52, and the positioning protrusions 52 drive the other end of the annular closing cylinder 5 to move and close and abut against the circumferences on one side of the annular drive groove 21; a driving handle 55 can be arranged on the outer side of the annular closing cylinder 5 for pulling.

[0030] In the present invention, a pressing ring body 32 is used as an intermediate carrier between the mold outer casing 2 and the hub outer cover 1, so that a non-contact rotational sealing assembly is achieved between the hub outer cover 1 and the mold outer casing 2. The hub outer cover 1 and the pressing ring body 32 are rotationally assembled, and the pressing ring body 32 and the mold outer casing 2 are hermetically assembled, achieving a rotational sealing assembly, enabling quick disassembly and installation, and at the same time, the sealing performance is more durable.

[0031] During the assembly of the present invention, the hub outer cover 1 is butted and pressed against one end of the mold outer casing 2, so that the pressing ring body 32 axially slides on the positioning convex ring 33. At the same time, the outer end of the rotating stud 34 is butted against the outer end of the threaded channel 321 of the pressing ring body 32. Then, by rotating a plurality of rotating studs 34, the screw teeth are engaged, so that the rotating studs 34 rotate to drive the pressing ring body 32 to axially slide on the outer sides of the circumferences of the positioning convex ring 33. Then, the pressing ring body 32 drives the annular sealing ring 35 at the end to press against the end face of the mold outer casing 2, thus forming a sealing structure. An inner annular water retaining groove 91 is formed between the positioning clamping ring convex 322 and the annular intermediate baffle 323, and an outer annular water retaining groove 92 is formed between the annular intermediate baffle 323 and the outer surface of the mold outer casing 2. Thus, multiple drainage grooves are formed, and the sealing performance is good.

[0032] The present invention can synchronously drive a plurality of gear blocks 41 to rotate through the internal gear ring body 42 in the synchronous driving mechanism 4, thereby driving a plurality of rotating studs 34 to rotate. The driving is convenient and fast, and by rotating and pressing or separating and connecting the locking threaded ring 44 on the positioning screw rod 43 against the side wall of the annular drive groove 21, the locking and unlocking of the whole structure are realized, and the structural stability is good.

[0033] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A new type of prefabricated nacelle cover for wind power generation, characterized in that, It comprises a mold outer shell, a wheel hub outer cover, and a pressing and rotating assembly mechanism; a pressing and rotating assembly mechanism is installed between the mold outer shell and the wheel hub outer cover; the pressing and rotating assembly mechanism comprises an outer rotating ring body, a pressing ring body, a positioning convex ring, a rotating stud, and an annular sealing ring; an outer rotating ring body is installed around the end of the wheel hub outer cover; a pressing ring body is installed on the inner side around the outer rotating ring body, and the outer rotating ring body is rotatably engaged with the pressing ring body; a plurality of threaded channels are arranged around the pressing ring body; a positioning convex ring is installed around one end of the mold outer shell; the pressing ring body is axially slidably engaged with the outer side around the positioning convex ring; an annular sealing ring is respectively installed around the outer side and the inner side of the outer end surface of the pressing ring body; an annular driving groove is opened around the outer side of the mold outer shell, and a plurality of through-connection channels are arranged at one end of the annular driving groove, and the through-connection channels extend to one end edge of the mold outer shell; the through-connection channels A rotating stud is rotatably installed in the channel, the outer end of the rotating stud extends to the outside of one end of the mold outer shell, and the inner end of the rotating stud is located on the annular driving groove; the outer ends of the rotating stud are threadedly screwed with the threaded channels of the pressure ring body, and the rotating stud rotates to drive the pressure ring body to slide axially around the outside of the positioning convex ring, and the pressure ring body drives the annular sealing ring to press against the end surface of the mold outer shell to form a sealing structure; the pressure rotation assembly mechanism also includes a positioning clamping ring convex; a positioning clamping ring convex is installed on the outside of the pressure ring body; an annular clamping groove is provided on the inner side of the outer rotating ring body; the annular clamping groove on the inner side of the outer rotating ring body is rotatably clamped on the positioning clamping ring convex; the longitudinal cross-sections of the positioning clamping ring convex and the annular clamping groove are both T-shaped structures; an annular intermediate baffle is provided on the outer side of the pressure ring body; the annular intermediate baffle is located on the outer side of the positioning clamping ring convex.

2. The novel prefabricated nacelle for wind power generation according to claim 1, wherein, It also includes a synchronous drive mechanism; the synchronous drive mechanism includes a gear block, an internal gear ring body, a positioning screw, a locking threaded ring, and a rotation limit ring body; a gear block is installed on the inner end of each rotating stud, and multiple gear blocks are engaged with an internal gear ring body on the outer sides thereof, multiple positioning screws are evenly installed on one end of the internal gear ring body, and a rotation limit ring body is commonly installed on the outer ends of multiple positioning screws, and a locking threaded ring is threadedly screwed on each positioning screw, and limit ring grooves are provided around the inner side of the annular drive groove, and the rotation limit ring body is rotatably clamped on the limit ring groove, and the locking thread ring is rotatably pressed or separated on the positioning screw to be connected to the side wall of the annular drive groove.

3. The novel prefabricated nacelle for wind power generation according to claim 2, characterized in that, The outer ends of the gear blocks are respectively provided with rotation positioning rods, and the ends of the rotation positioning rods are respectively rotationally clamped on the side walls of the annular driving grooves.

4. The novel prefabricated nacelle for wind power generation according to claim 2, wherein, The other end of the inner gear ring body is provided with a pressing groove, in which a pressing elastic body is respectively installed, and the two ends of the pressing elastic body are respectively elastically pressed against the pressing groove of the inner gear ring body and the side wall of the annular driving groove.

5. The novel prefabricated nacelle for wind power generation according to claim 1, characterized in that, A plurality of sliding clamping teeth are arranged around the inner side of the pressing ring body; a plurality of axial strip sliding grooves are arranged around the outer side of the positioning convex ring; and the sliding clamping teeth are respectively slidably clamped on the axial strip sliding grooves.

6. The novel prefabricated nacelle for wind power generation according to claim 1, characterized in that, The outer mold shell is in a circular ring structure.

7. The novel prefabricated nacelle for wind power generation according to claim 1, characterized in that, Sliding ring grooves are provided on the outer sides around the mold outer shell body. The sliding ring grooves are arranged on one side of the annular driving groove. Sliding positioning grooves are opened vertically on the sliding ring grooves. An annular closed cylinder is sleeved on the sliding ring grooves. Positioning protrusions are respectively provided on the upper and lower sides inside the annular closed cylinder; the positioning protrusions are slidably inserted into the sliding positioning grooves, and pressing springs are respectively arranged in the sliding positioning grooves, and the pressing springs press against one side of the positioning protrusions; a telescopic ring body is arranged between the inner end of the sliding ring groove and one end of the annular closed cylinder; a sealing pressing ring is arranged at the other end of the annular closed cylinder; the pressing springs press against the positioning protrusions, and the positioning protrusions drive the other end of the annular closed cylinder to move and be hermetically abutted against the periphery on one side of the annular driving groove.

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