Wind generating set and cabin thereof

Abstract

The invention relates to a wind generating set and a cabin thereof. The cabin comprises a cabin body, a main shaft and an isolation assembly. Wherein the cabin is provided with a containing space, a through hole is formed in the side wall of the cabin, one end of the spindle is in transmission connection with the impeller, and the other end of the spindle penetrates through the through hole to be in transmission connection with the speed increasing box. The isolation assembly comprises an isolation body and an isolation end cover, the isolation body is arranged on the side wall around the through hole in a surrounding mode so that the containing space can be divided into a first containing cavity and a second containing cavity, the speed increasing box is arranged in the second containing cavity, at least part of the main shaft is located in the first containing cavity, and the isolation end cover is buckled to the end, away from the through hole, of the isolation body. And the first accommodating cavity is isolated from the second accommodating cavity. By means of the arrangement, impurities such as water and dust can enter the first containing cavity isolated from the second containing cavity after passing through the through hole, the impurities such as water and dust are prevented from directly entering the second containing cavity after passing through the through hole to make contact with the speed increasing box, and protection of the speed increasing box is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of wind power generation equipment, and in particular to a wind power generator set and a nacelle thereof. Background Art

[0002] The wind turbine generator set includes a wind rotor and a nacelle, and the nacelle includes a nacelle and a transmission system arranged in the nacelle. The transmission system includes a main shaft, a speed increaser and a generator. The speed increaser drives the generator to operate, and the main shaft is used for power transmission between the wind rotor and the speed increaser. The impeller is located outside the nacelle, and the main shaft is arranged in the nacelle and one end thereof extends to the outside of the nacelle through a through hole on the side wall of the nacelle to facilitate connection with the impeller. In the related art, a seal is usually provided at the through hole to prevent impurities such as water and sand from entering the nacelle through the through hole and damaging the speed increaser. However, the rotation of the main shaft will wear the seal, reduce the sealing performance of the seal, and easily cause impurities such as water and sand to pass through the seal and directly contact the speed increaser, causing damage to the speed increaser and the generator. Summary of the invention

[0003] The purpose of the present disclosure is to provide a wind turbine generator set and a nacelle thereof, wherein the nacelle of the wind turbine generator can prevent impurities such as water and dust from directly contacting a speed increasing gearbox in the nacelle through a through hole, thereby improving the protection of the speed increasing gearbox.

[0004] In order to achieve the above-mentioned object, the present disclosure provides a wind turbine generator set in a first aspect, comprising: A cabin body has a containing space, and a through hole is opened on the side wall of the cabin body; A main shaft, one end of which is used for transmission connection with the impeller, and the other end of which is used for transmission connection with the speed increaser through the through hole; and The isolation assembly includes an isolation body and an isolation end cover. The isolation body is arranged on the side wall around the through hole to divide the accommodating space into a first accommodating chamber and a second accommodating chamber. The speed increaser is arranged in the second accommodating chamber. The main shaft is at least partially located in the first accommodating chamber. The isolation end cover is buckled on the end of the isolation body away from the through hole to isolate the first accommodating chamber from the second accommodating chamber.

[0005] Optionally, the nacelle further comprises a first seal located at the through hole and extending circumferentially around the main shaft, the first seal being sealedly connected to the nacelle body, and the first seal being slidably sealedly connected to the main shaft.

[0006] Optionally, the isolation end cover is detachably buckled onto an end of the isolation body away from the through hole.

[0007] Optionally, one end of the main shaft away from the impeller extends through the through hole to the first accommodating chamber, and the cabin also includes a magnetic transmission mechanism, which includes an active transmission component arranged in the first accommodating chamber and connected to the main shaft, and a driven transmission component arranged in the second accommodating chamber and connected to the input shaft of the speed increaser, and magnetic transmission is performed between the main shaft and the speed increaser through the active transmission component and the driven transmission component.

[0008] Optionally, the active transmission component includes a plurality of active magnets fixedly connected to the main shaft, and the driven transmission component includes a plurality of driven magnets fixedly connected to the input shaft and magnetically matched with the active magnets in a one-to-one manner. The main shaft drives the plurality of active magnets to rotate around the axis of the main shaft to drive the plurality of driven magnets and the input shaft fixedly connected to the driven magnets to rotate.

[0009] Optionally, a plurality of active magnets are arranged at circumferential intervals around the main shaft, and each of the active magnets extends axially along the main shaft, a plurality of driven magnets are arranged at circumferential intervals around the isolation body, and each of the driven magnets extends axially along the main shaft, and the active magnets and driven magnets that cooperate with each other are arranged radially at intervals along the main shaft.

[0010] Optionally, the active transmission assembly further comprises a first mounting seat fixedly sleeved on the main shaft, the first mounting seat is formed with a first accommodating groove extending along the circumference of the first mounting seat, and a plurality of active magnets are fixedly arranged in the first accommodating groove at intervals along the circumference of the first mounting seat; and The driven transmission assembly also includes a second mounting seat that can be movably mounted on the isolation body and fixedly connected to the input shaft, the second mounting seat is formed with a second accommodating groove extending along the circumference of the second mounting seat, and a plurality of driven magnets are fixed in the second accommodating groove at intervals along the circumference of the second mounting seat.

[0011] Optionally, the magnetic transmission mechanism also includes a first bearing, a second bearing and a third bearing fixed to the cabin, the second mounting seat is inserted into the third bearing, the first bearing is arranged between the second mounting seat and the isolation body, so that the second mounting seat is rotatably connected to the isolation body through the first bearing, and the second bearing is arranged between the main shaft and the isolation body, so that the main shaft is rotatably connected to the isolation body through the second bearing.

[0012] Optionally, the number of the first bearing, the second bearing and the third bearing is two respectively, and the two first bearings, the two second bearings and the two third bearings are arranged at intervals along the axial direction of the main shaft.

[0013] A second aspect of the present disclosure provides a generator set, comprising a nacelle of the generator set provided by the first aspect of the present disclosure.

[0014] Through the above technical solution, the isolation assembly includes an isolation body and an isolation end cover. The isolation body is arranged on the side wall around the through hole so that the accommodation space is divided into a first accommodation chamber and a second accommodation chamber. The speed increaser is arranged in the second accommodation chamber, and the main shaft is at least partially located in the first accommodation chamber. The isolation end cover is buckled on the end of the isolation body away from the through hole to isolate the first accommodation chamber from the second accommodation chamber. Through the above essence, impurities such as water, sand and dust can enter the first accommodation chamber isolated from the second accommodation chamber after passing through the through hole, so as to avoid impurities such as water, sand and dust from directly entering the second accommodation chamber after passing through the through hole and directly contacting the speed increaser, thereby improving the protection of the speed increaser.

[0015] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 is a schematic structural diagram of a nacelle and an impeller provided in an exemplary embodiment of the present disclosure, wherein only a portion of the impeller blades are shown; Figure 2 yes Figure 1 AA section view in; Figure 3 yes Figure 2 A detailed enlarged view of the B area; Figure 4 is a structural schematic diagram of a cabin provided in an exemplary embodiment of the present disclosure; Figure 5 yes Figure 4 CC section view in; Figure 6 is a schematic structural diagram of a first sealing member provided in an exemplary embodiment of the present disclosure; Figure 7 is a schematic structural diagram of a transmission system and an impeller provided in an exemplary embodiment of the present disclosure; Figure 8 is a schematic structural diagram of a portion of a cabin provided in an exemplary embodiment of the present disclosure; Fig. 9 Schematic diagram of the structure of a wind turbine generator set provided in an exemplary embodiment of the present disclosure.

[0017] Description of Reference Numerals 1-impeller; 2-cabin; 3-tower; 4-base; 10-main shaft; 20-magnetic transmission mechanism; 21-active transmission assembly; 211-active magnet; 212-first mounting seat; 213-second bearing; 23-left end cover of second mounting seat; 24-first bearing; 25-third bearing; 26-bearing seat; 261-bearing seat end cover; 262-bearing seat body; 27-driven transmission assembly; 271-driven magnet; 272-second mounting seat; 28-right end cover of second mounting seat; 30-speed increaser; 31-input shaft; 40-generator; 50-cabin; 51-through hole; 60-accommodation space; 61-second accommodating chamber; 70-isolating assembly; 71-isolating body; 71a-flange; 72-isolating end cover; 73-first accommodating chamber; 80-first sealing member. DETAILED DESCRIPTION

[0018] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0019] In the present disclosure, unless otherwise stated, directional words such as "inside" and "outside" refer to the inside and outside of the outline of a component or structure itself. "First" and "second" are used to distinguish one element from another and do not have order or importance. In addition, in the description with reference to the drawings, the same mark in different drawings represents the same element.

[0020] like Figures 1 to 9 As shown, the first aspect of the present disclosure provides a nacelle 2 of a wind turbine generator set, comprising a nacelle 50, a main shaft 10 and an isolation assembly 70. The nacelle 50 has a accommodating space 60, a through hole 51 is provided on the side wall of the nacelle 50, one end of the main shaft 10 is used for transmission connection with the impeller 1, and the other end passes through the through hole 51 to be transmission connected with the speed increaser 30. The isolation assembly 70 comprises an isolation body 71 and an isolation end cover 72, the isolation body 71 is arranged on the side wall around the through hole 51, so that the accommodating space 60 is divided into a first accommodating chamber 73 and a second accommodating chamber 61, the speed increaser 30 is arranged in the second accommodating chamber 61, the main shaft 10 is at least partially located in the first accommodating chamber 73, and the isolation end cover 72 is buckled on the end of the isolation body 71 away from the through hole 51 to isolate the first accommodating chamber 73 from the second accommodating chamber 61. Through the above-mentioned arrangement, impurities such as water, sand and dust can enter the first accommodating chamber 73 isolated from the second accommodating chamber 61 after passing through the through hole 51, thereby preventing impurities such as water, sand and dust from directly entering the second accommodating chamber 61 after passing through the through hole 51 and contacting the speed increaser 30, thereby improving the protection of the speed increaser 30.

[0021] In the above-mentioned embodiment, the setting of the isolation component 70 divides the accommodating space 60 in the cabin 50 into a first accommodating chamber 73 and a second accommodating chamber 61 which are isolated from each other. The speed increasing box 30 is arranged in the second accommodating chamber 61. The first accommodating chamber 73 is connected with the through hole 51. After impurities such as water and sand pass through the through hole 51, they first enter the first accommodating chamber 73 instead of directly entering the second accommodating chamber 61, thereby preventing impurities such as water and sand from directly contacting the speed increasing box 30 after passing through the through hole 51, thereby improving the protection of the speed increasing box 30.

[0022] In some embodiments, the nacelle 2 further includes a first sealing member 80 located at the through hole 51 and extending around the circumference of the main shaft 10, the first sealing member 80 is sealedly connected to the nacelle body 50, and the first sealing member 80 is slidably sealedly connected to the main shaft 10. By providing the first sealing member 80, the through hole 51 can be sealed to prevent impurities such as water, sand and dust from entering the first accommodating chamber 73 through the through hole 51.

[0023] As described above, the isolation assembly 70 separates the accommodating space 60 of the cabin 50 into a first accommodating chamber 73 and a second accommodating chamber 61 that are isolated from each other. The first accommodating chamber 73 is equivalent to setting a barrier for impurities such as water and sand to enter the second accommodating chamber 61, so that impurities such as water and sand are intercepted in the first accommodating chamber 73 after passing through the through hole 51. The first sealing member 80 seals the through hole 51, which can prevent impurities such as water and sand from entering the first accommodating chamber 73. Therefore, the provision of the first sealing member 80 and the isolation assembly 70 is equivalent to providing two layers of protection for the speed increasing box 30 disposed in the second accommodating chamber 61, thereby providing better protection for the speed increasing box 30.

[0024] In some specific embodiments, a flange 71a is formed at one end of the isolation body 71 away from the isolation end cover 72, and one end of the isolation body 71 with the flange 71a passes through the through hole 51 on the side wall of the cabin 50, and the flange 71a of the isolation body 71 is attached to the outer side wall of the cabin 50, and the flange 71a of the isolation body 71 can be pressed against the outer side wall of the cabin 50 through the first sealing member 80. Specifically, screws can be used to pass through the first sealing member 80 and the flange 71a of the isolation body 71 in sequence to connect to the outer side wall of the cabin 50, so as to fix the flange 71a of the isolation body and the first sealing member 80 on the outer side wall of the cabin 50, and the flange 71a of the isolation body 71 is clamped between the outer side wall of the cabin 50 and the first sealing member 80.

[0025] In some embodiments, the generator 40 drivingly connected to the speed increasing box 30 is also disposed in the second accommodating chamber 61, and the generator 40 can be protected by the above-mentioned isolation assembly 70 and the first sealing member 80. Of course, other equipment in the second accommodating chamber 61 can also be protected, which will not be described in detail here.

[0026] In the above-mentioned embodiment, it is mentioned that the isolation end cover 72 is buckled on the end of the isolation body 71 away from the through hole 51 to isolate the first accommodating cavity 73 from the second accommodating cavity 61. The isolation end cover 72 can be constructed in different forms, and the transmission connection between the main shaft 10 and the speed increaser 30 can also adopt different transmission connection modes according to the different isolation end covers 72.

[0027] In some embodiments not shown in the figure, the isolation end cover 72 is provided with a through hole for the main shaft 10 to pass through, and the end of the main shaft 10 away from the impeller 1 can pass through the through hole on the isolation end cover 72 and be transmission-connected with the speed increaser 30. Among them, the through hole of the isolation end cover 72 can be sealed to isolate the first accommodating chamber 73 from the second accommodating chamber 61. Specifically, a sealing member can be provided at the through hole of the isolation end cover 72, and the sealing member and the isolation end cover 72 are sealedly connected, and the sealing member and the main shaft 10 can be slidably sealedly connected, so that the isolation end cover 72 is buckled on the isolation end cover 72 body to isolate the first accommodating chamber 73 from the second accommodating chamber 61.

[0028] In other embodiments, Figure 3 As shown, the isolation end cover 72 is buckled on the end of the isolation body 71 away from the through hole 51, so as to be closed by buckling the isolation end cover 72 on the end of the isolation body 71 away from the through hole 51, so as to isolate the first accommodating chamber 73 from the second accommodating chamber 61. In this embodiment, the end of the main shaft 10 away from the impeller 1 passes through the through hole 51 and extends to the first accommodating chamber 73.

[0029] It should be understood that the isolation end cover 72 is detachably fastened to the end of the isolation body 71 away from the through hole 51, which facilitates the replacement and disassembly of the isolation end cover 72 and also facilitates the installation of the isolation body 71 on the cabin 50, which will not be repeated here.

[0030] In addition, in order to adapt to the form that the isolation end cover 72 is buckled on the end of the isolation body 71 away from the through hole 51 to close the end of the isolation body 71 away from the through hole 51, the transmission between the main shaft 10 and the speed increaser 30 can be realized by magnetic transmission. The magnetic transmission between the main shaft 10 and the speed increaser 30 is described below.

[0031] In some embodiments, the cabin 2 also includes a magnetic transmission mechanism 20, which includes an active transmission component 21 disposed in the first accommodating cavity 73 and connected to the main shaft 10, and a driven transmission component 27 disposed in the second accommodating cavity 61 and connected to the input shaft 31 of the speed increaser 30. Magnetic transmission is performed between the main shaft 10 and the speed increaser 30 through the active transmission component 21 and the driven transmission component 27.

[0032] In the above-mentioned embodiment, non-contact magnetic transmission is realized between the main shaft 10 and the input shaft 31 of the speed increaser 30 through the active transmission component 21 and the driven transmission component 27, and the transmission between the main shaft 10 and the speed increaser 30 can be realized when the end of the isolation body 71 away from the through hole 51 is closed by the isolation end cover 72.

[0033] In some embodiments, the active transmission component 21 includes a plurality of active magnets 211 fixedly connected to the main shaft 10, and the driven transmission component 27 includes a plurality of driven magnets 271 fixedly connected to the input shaft 31 of the speed increaser 30 and magnetically matched with the active magnets 211 one by one. The main shaft 10 drives the plurality of active magnets 211 to rotate around the axis of the main shaft 10 to drive the plurality of driven magnets 271 and the input shaft 31 fixedly connected to the driven magnets 271 to rotate.

[0034] The arrangement of multiple active magnets 211 and multiple driven magnets 271 can also improve the reliability of transmission between the main shaft 10 and the input shaft 31 of the speed increaser 30. That is, when a pair of active magnets 211 and driven magnets 271 fail, the other active magnets 211 and driven magnets 271 can still be used normally, thereby ensuring normal transmission between the main shaft 10 and the input shaft 31 of the speed increaser 30 without affecting the normal operation of the equipment.

[0035] In addition, contactless magnetic transmission between the main shaft 10 and the input shaft 31 of the speed increaser 30 is achieved through the active magnet 211 and the driven magnet 271, which has an overload protection function. When the load is too large and exceeds the carrying capacity of the active magnet 211 and the driven magnet 271 during transmission, the active magnet 211 and the driven magnet 271 will automatically slip off, thereby avoiding damage to the magnetic transmission mechanism 20, the main shaft 10 and the speed increaser 30 due to excessive load.

[0036] It should be noted that the active magnet 211 and the driven magnet 271 can be arranged in any appropriate form so that the active magnet 211 can drive the driven magnet 271 to rotate. For example, the polarities of the surfaces facing each other between the active magnet 211 and the driven magnet 271 can be opposite, so that there is an attractive force between the active magnet 211 and the driven magnet 271. When the active magnet 211 rotates, the driven magnet 271 is attracted to the driven magnet 271 and drives the driven magnet 271 to rotate along with the active magnet 211.

[0037] In some embodiments, a plurality of active magnets 211 are arranged at circumferential intervals around the main shaft 10, and each active magnet 211 extends axially along the main shaft 10; a plurality of driven magnets 271 are arranged at circumferential intervals around the isolation body 71, and each driven magnet 271 extends axially along the main shaft 10; and the active magnets 211 and driven magnets 271 that are magnetically matched are arranged at radial intervals along the main shaft 10.

[0038] In the above embodiment, the active magnet 211 and the driven magnet 271 both extend radially of the main shaft 10 so that the area of ​​the opposing surfaces of the active magnet 211 and the driven magnet 271 is larger to improve the bearing capacity during transmission between the active magnet 211 and the driven magnet 271 .

[0039] In some embodiments, the active transmission assembly 21 further includes a first mounting seat 212 fixedly sleeved on the main shaft 10, the first mounting seat 212 is formed with a first receiving groove extending along the circumference of the first mounting seat 212, and a plurality of active magnets 211 are arranged in the first receiving groove at intervals along the circumference of the first mounting seat 212. Each active magnet 211 is fixedly connected to the first mounting seat 212.

[0040] In the above-mentioned embodiment, the plurality of active magnets 211 can be first fixedly mounted in the first receiving groove of the first mounting seat 212, and then the first mounting seat 212 can be fixedly sleeved on the main shaft 10, so that the plurality of active magnets 211 are fixedly connected to the main shaft 10 through the first mounting seat 212, which can facilitate the installation of the plurality of active magnets 211. In addition, the plurality of active magnets 211 are arranged in the first receiving groove of the first mounting seat 212, so that the plurality of active magnets 211 can be protected.

[0041] In some embodiments, multiple active magnets 211 can be installed in the first receiving groove of the first mounting seat 212 by screws, and the first mounting seat 212 can be installed on the main shaft 10 by screws. The multiple active magnets 211 are first installed on the first mounting seat 212, and then the first mounting seat 212 is fixed to the main shaft 10 by screws. This can reduce the number of holes opened on the main shaft 10, reduce damage to the structure of the main shaft 10, and ensure the structural strength of the main shaft 10.

[0042] In some embodiments, the driven transmission assembly 27 further includes a second mounting seat 272 that is movably sleeved on the isolation body 71 and fixedly connected to the input shaft 31, the second mounting seat 272 is formed with a second accommodating groove extending along the circumference of the second mounting seat 272, and a plurality of driven magnets 271 are fixedly arranged in the second accommodating groove at intervals along the circumference of the second mounting seat 272. The second mounting seat 272 is provided to support the plurality of driven magnets 271 to ensure the smooth operation of the plurality of driven magnets 271. In addition, the plurality of driven magnets 271 are provided in the second groove to protect the plurality of driven magnets 271.

[0043] In the above-mentioned embodiment, when a plurality of driven magnets 271 are installed on the second mounting seat 272, one end of the side wall of the second mounting seat 272 away from the through hole 51 is fixedly connected to the second mounting seat left end cover 23, and the second mounting seat 272 can be fixedly connected to the input shaft 31 of the speed increaser 30 through the second mounting seat left end cover 23, so that when the plurality of driven magnets 271 rotate around the isolation body 71, the second mounting seat 272 is driven to rotate, and the second mounting seat 272 drives the input shaft 31 of the speed increaser 30 to rotate through the second mounting seat left end cover 23.

[0044] In some embodiments, the magnetic transmission mechanism 20 further includes a first bearing 24, a second bearing 213, and a third bearing 25 fixed to the cabin 50, and the second mounting seat 272 is plugged into the third bearing 25, so that the third bearing 25 can support the second mounting seat 272, and is used to support the pivot rotation of the second mounting seat 272. In addition, the first bearing 24 is arranged between the second mounting seat 272 and the isolation body 71, so that the second mounting seat 272 is rotatably connected to the isolation body 71 through the first bearing 24, and through the arrangement of the first bearing 24 and the third bearing 25, the second mounting seat 272 can be rotated relative to the isolation body 71.

[0045] In addition, the second bearing 213 is disposed between the main shaft 10 and the isolation body 71, so that the main shaft 10 is rotatably connected to the isolation body 71 through the second bearing 213. The second bearing 213 can be fixedly sleeved on the main shaft 10, and the outer ring of the second bearing 213 can be fixedly connected to the isolation body 71.

[0046] The first bearing 24, the second bearing 213 and the third bearing 25 can be arranged correspondingly. The second bearing 213 is sleeved on the main shaft 10, the outer ring of the second bearing 213 is fixedly connected to the isolation body 71, the first bearing 24 is sleeved on the isolation body 71 and corresponds to the second bearing 213, and then the second mounting seat 272 is sleeved on the first bearing 24, and the third bearing 25 is sleeved on the second mounting seat 272. The third bearing 25 corresponds to the second bearing 213 and the first bearing 24 in the radial direction of the main shaft 10, and can support the isolation body 71 to prevent the isolation body from flexural deformation when supporting the second bearing 213 and the main shaft 10, so as to avoid affecting the normal operation of the main shaft 10.

[0047] In some embodiments, the number of the first bearing 24, the second bearing 213, and the third bearing 25 can be set according to actual needs. Figure 3As shown, the number of the first bearing 24, the second bearing 213 and the third bearing 25 is two respectively, and the two first bearings 24, the two second bearings 213 and the two third bearings 25 are arranged at intervals along the axial direction of the main shaft 10. By setting the two third bearings 25 on the cabin body 50 of the cabin 2 and the two first bearings 24 arranged between the second mounting seat 272 and the isolation body 71, a more stable support can be formed for the second mounting seat 272, so that the second mounting seat 272 can rotate more stably. And by setting the two second bearings 213 between the main shaft 10 and the isolation body 71, the main shaft 10 can rotate more stably. In addition, by setting the above-mentioned two first bearings 24, the two second bearings 213 and the two third bearings 25, a more stable support can be formed for the isolation assembly 70, which will not be repeated here.

[0048] In some specific embodiments, the outer rings of the two second bearings 213 are fixedly connected to the isolation body 71, and the two second bearings 213 are fixedly sleeved on the main shaft 10, and any suitable structure can be used to limit the position of the two second bearings 213. For example, one of the two second bearings 213 can be limited by the isolation end cover 72 and the shaft member of the main shaft 10 to limit the axial position of the second bearing 213 in the main shaft 10; the other can be limited by the first seal 80 and the shaft shoulder of the main shaft 10 to limit the axial position of the second bearing 213 in the main shaft 10.

[0049] like Figure 3 As shown, for the two first bearings 24 disposed between the second mounting seat 272 and the isolation body 71, each first bearing 24 is fixedly sleeved on the isolation body 71, and the outer ring of each first bearing 24 is fixedly connected to the second mounting seat 272. Among them, the isolation body 71 is fixedly connected to the side wall of the cabin 50, the isolation body 71 does not rotate, the first bearing 24 is fixedly sleeved on the isolation body 71, then the inner ring of the first bearing 24 does not rotate, the outer ring of the first bearing 24 is fixedly connected to the second mounting seat 272, the second mounting seat 272 is clamped between the first bearing 24 and the third bearing 25, and the second mounting seat 272 can rotate relative to the isolation member.

[0050] like Figure 5 As described above, one of the two first bearings 24 can be limited in the axial direction of the main shaft 10 by the second mounting seat left end cover 23 and the second mounting seat 272; the other of the two first bearings 24 can be limited in the axial direction of the main shaft 10 by the second mounting seat right end cover 28 and the second mounting seat 272, which will not be repeated here.

[0051] In some embodiments, the magnetic transmission mechanism 20 also includes a bearing seat 26, and the third bearing 25 is installed on the bearing seat 26. The bearing seat 26 may include a bearing seat body 262 and a bearing seat end cover 261. The outer ring of the third bearing 25 abuts against the bearing seat body 262 in the radial direction, and the bearing seat end cover 261 and the bearing seat body 262 are clamped on the third bearing 25 in the axial direction of the third bearing 25, so as to limit the third bearing 25 in the axial direction.

[0052] For ease of understanding, please refer to the attached Figure 1 To Attachment Figure 8 , the transmission process between the main shaft 10 and the speed increaser 30 is described.

[0053] One end of the main shaft 10 is connected to the impeller 1, and the other end of the main shaft 10 extends through the through hole 51 to the first accommodating chamber 73. The first mounting seat 212 is fixedly sleeved on the side wall of the main shaft 10, and a plurality of active magnets 211 are arranged in the first accommodating groove of the first mounting seat 212 at intervals along the circumference of the first mounting seat 212. In addition, two second bearings 213 are arranged in the first accommodating chamber 73, and the outer rings of the two second bearings 213 are fixedly connected to the isolation body 71, and the main shaft 10 is plugged into the two second bearings 213. A second mounting seat 272 is provided on the outer sleeve of the isolation body 71, and a plurality of driven magnets 271 are arranged in the second groove of the second mounting seat 272 at intervals along the circumference of the second mounting seat 272, and the plurality of driven magnets 271 and the plurality of active magnets 211 are arranged one by one. A first bearing 24 is arranged between the second mounting seat 272 and the isolation body 71. There are two first bearings 24. The two first bearings 24 are respectively fixedly sleeved on the isolation body 71. The outer rings of the two first bearings 24 are fixedly connected to the second mounting seat 272. The second mounting seat 272 is inserted into two third bearings 25. The two third bearings 25 are respectively arranged on two bearing seats 26 arranged in the cabin 50. The second mounting seat 272 is fixedly connected to the input shaft 31 of the speed increasing box 30 through the left end cover 23 of the second mounting seat.

[0054] When the impeller 1 rotates, the main shaft 10 is driven to rotate, and the main shaft 10 rotates with the main shaft 10 with the first mounting seat 212 fixedly connected to its side wall and the multiple active magnets 211 arranged on the first mounting seat 212; when the active magnet 211 rotates, the driven magnet 271 is attracted to rotate with the active magnet 211; when the driven magnet 271 rotates, the second mounting seat 272 fixedly connected to the driven magnet 271 rotates, and the second mounting seat 272 drives the input shaft 31 of the speed increaser 30 to rotate through the left end cover 23 of the second mounting seat, so as to transmit the power of the main shaft 10 to the speed increaser 30. In addition, the output shaft of the speed increaser 30 can be connected to the generator 40 arranged in the second accommodating chamber 61 to drive the generator 40 to rotate, thereby converting mechanical energy into electrical energy.

[0055] A second aspect of the present disclosure provides a wind turbine generator set, such as Figure 1 system Fig. 9 As shown, the wind turbine generator set includes an impeller 1 and a nacelle 2 of the wind turbine generator set provided by the first aspect of the present disclosure, the nacelle 2 also includes a generator 40, one end of the main shaft 10 is connected to the impeller 1, the other end of the main shaft 10 is transmission-connected to the input shaft 31 of the speed increaser 30 through the magnetic transmission mechanism 20, and the output shaft of the speed increaser 30 is transmission-connected to the generator 40. The impeller 1 drives the generator 40 to rotate through the main shaft 10, the magnetic transmission mechanism 20 and the speed increaser 30, so that the generator 40 generates electricity.

[0056] In addition, if Fig. 9 As shown, the wind turbine generator 40 group further includes a base 4 and a tower 3 . The tower 3 stands on the base 4 , and a nacelle 2 is arranged on the top of the tower 3 . The tower 3 is used to support the nacelle 2 .

[0057] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0058] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0059] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A nacelle of a wind turbine generator set, characterized in that: include: A cabin body has a containing space, and a through hole is opened on the side wall of the cabin body; A main shaft, one end of which is used for transmission connection with the impeller, and the other end of which is used for transmission connection with the speed increaser through the through hole; and The isolation assembly includes an isolation body and an isolation end cover. The isolation body is arranged on the side wall around the through hole to divide the accommodating space into a first accommodating chamber and a second accommodating chamber. The speed increaser is arranged in the second accommodating chamber. The main shaft is at least partially located in the first accommodating chamber. The isolation end cover is buckled on the end of the isolation body away from the through hole to isolate the first accommodating chamber from the second accommodating chamber.

2. The nacelle according to claim 1, characterized in that The nacelle further comprises a first sealing member located at the through hole and extending around the circumference of the main shaft, wherein the first sealing member is sealingly connected to the nacelle body, and the first sealing member is slidably sealingly connected to the main shaft.

3. The nacelle according to claim 1, characterized in that The isolation end cover is detachably buckled on an end of the isolation body away from the through hole.

4. The nacelle according to any one of claims 1 to 3, characterized in that: One end of the main shaft away from the impeller extends through the through hole to the first accommodating chamber, and the nacelle also includes a magnetic transmission mechanism, which includes an active transmission component arranged in the first accommodating chamber and connected to the main shaft, and a driven transmission component arranged in the second accommodating chamber and connected to the input shaft of the speed increaser, and magnetic transmission is transmitted between the main shaft and the speed increaser through the active transmission component and the driven transmission component.

5. The nacelle according to claim 4, characterized in that The active transmission component includes a plurality of active magnets fixedly connected to the main shaft, and the driven transmission component includes a plurality of driven magnets fixedly connected to the input shaft and magnetically matched with the active magnets in a one-to-one manner. The main shaft drives the plurality of active magnets to pivot around the axis of the main shaft to drive the plurality of driven magnets and the input shaft fixedly connected to the driven magnets to rotate.

6. The nacelle according to claim 5, characterized in that A plurality of active magnets are arranged at circumferential intervals around the main shaft, and each of the active magnets extends axially along the main shaft. A plurality of driven magnets are arranged at circumferential intervals around the isolation body, and each of the driven magnets extends axially along the main shaft. The active magnets and driven magnets that cooperate with each other are arranged at radial intervals along the main shaft.

7. The nacelle according to claim 6, characterized in that The active transmission assembly further comprises a first mounting seat fixedly sleeved on the main shaft, the first mounting seat being formed with a first receiving groove extending along the circumference of the first mounting seat, and a plurality of active magnets being fixedly arranged in the first receiving groove at intervals along the circumference of the first mounting seat; and The driven transmission assembly also includes a second mounting seat that can be movably mounted on the isolation body and fixedly connected to the input shaft, the second mounting seat is formed with a second accommodating groove extending along the circumference of the second mounting seat, and a plurality of driven magnets are fixed in the second accommodating groove at intervals along the circumference of the second mounting seat.

8. The nacelle according to claim 7, characterized in that The magnetic transmission mechanism also includes a first bearing, a second bearing and a third bearing fixed to the cabin body, the second mounting seat is inserted into the third bearing, the first bearing is arranged between the second mounting seat and the isolation body, so that the second mounting seat is rotatably connected to the isolation body through the first bearing, and the second bearing is arranged between the main shaft and the isolation body, so that the main shaft is rotatably connected to the isolation body through the second bearing.

9. The nacelle according to claim 8, characterized in that The number of the first bearing, the second bearing and the third bearing is two respectively, and the two first bearings, the two second bearings and the two third bearings are arranged at intervals along the axial direction of the main shaft.

10. A generator set, characterized in that: A nacelle comprising a generator set as claimed in any one of claims 1 to 9.

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