CN211039620U - Tidal current energy power generation gear box - Google Patents
Tidal current energy power generation gear box Download PDFInfo
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- CN211039620U CN211039620U CN201921261630.9U CN201921261630U CN211039620U CN 211039620 U CN211039620 U CN 211039620U CN 201921261630 U CN201921261630 U CN 201921261630U CN 211039620 U CN211039620 U CN 211039620U
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- main shaft
- current energy
- tidal current
- gearbox
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Abstract
The utility model discloses a trend can electricity generation gear box, include: a gearbox comprising a main shaft housing (6); a hub having blades; the main shaft (3) is arranged in the main shaft box body (6), and one end, extending out of the main shaft box body (6), of the main shaft (3) is fixedly connected with the hub; the mechanical sealing device (1) is arranged at one end, extending out of the main shaft box body (6), of the main shaft (3) and is used for sealing the main shaft box body (6) in a two-way mode; the gear transmission structure is arranged in the gear box, the main shaft (3) is an input shaft of the gear transmission structure, and an output end of the gear transmission structure is connected with an input end of the generator. The utility model provides a trend can electricity generation gear box has effectively reduced trend can electricity generation gear box's volume, the cost is reduced.
Description
Technical Field
The utility model relates to a transmission technical field, in particular to trend can electricity generation gear box.
Background
Tidal current energy is increasingly paid attention to all countries in the world as a clean energy, and China has abundant tidal current energy reserves and large exploitable development amount. The tidal current energy power generation gear box is used as a key component in the tidal current power generation device, has great influence on the reliability, the economy and the like of the whole system, and the performance of the tidal current energy power generation gear box reflects the advanced technology of the tidal current energy power generation device.
Most of the existing tidal current energy power generation gear boxes are directly transplanted with land wind power gear systems to serve as tidal current energy power generation gear boxes, and the consideration on the specific application environment of tidal current energy is less. The input shaft of the gear box is rigidly connected with a rotating shaft (main shaft) with a blade structure by adopting couplings such as a locking disc and the like, so that the connecting volume is large and the cost is higher.
Therefore, how to reduce the size and the cost is a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a trend can electricity generation gear box to reduce volume, reduce cost.
In order to achieve the above object, the utility model provides a following technical scheme:
a tidal current energy generating gearbox comprising:
a gearbox including a main shaft case;
a hub having blades;
the main shaft is arranged in the main shaft box body, and one end of the main shaft, which extends out of the main shaft box body, is fixedly connected with the hub;
the mechanical sealing device is arranged at one end of the main shaft extending out of the main shaft box body and is used for sealing the main shaft box body in a two-way mode;
the main shaft is an input shaft of the gear transmission structure, and an output end of the gear transmission structure is connected with an input end of the generator.
Optionally, in the tidal current energy power generation gearbox, the gearbox further comprises a transmission gearbox and a rear box body, wherein the transmission gearbox and the rear box body are sequentially connected with the main shaft box body;
the gear transmission structure comprises a gear variable transmission structure arranged in the transmission gear box and a gear steering transmission structure arranged in the rear box body;
the input shaft of the gear speed-changing transmission structure is the main shaft; the transmission input end of the gear steering transmission structure is connected with the transmission output end of the gear variable transmission structure, and the transmission output end of the gear steering transmission structure is connected with the input end of the generator.
Optionally, in the tidal current energy generation gearbox, the transmission gearbox is a gear ring with a primary meshing tooth part and a secondary meshing tooth part;
the gear change transmission structure further includes:
a primary planet carrier connected with the main shaft, wherein the primary planet carrier is provided with primary planet wheels which are meshed with the primary meshing teeth of the gear ring;
a primary sun gear in mesh with the primary planet gears;
a secondary planet carrier connected with the primary sun gear, the secondary planet carrier having a secondary planet gear thereon, the secondary planet gear meshing with a secondary meshing tooth of the ring gear;
and the secondary sun wheel is meshed with the secondary planet wheel and is connected with the transmission input end of the gear steering transmission structure.
Optionally, in the tidal current energy generation gearbox, the main shaft is connected with the primary planet carrier through a spline;
and/or the primary sun gear is connected with the secondary planet carrier through a spline.
Optionally, in the tidal current energy generation gearbox, the gear steering transmission structure comprises:
the bevel gear seat is rotatably arranged in the rear box body and is connected with the secondary sun gear in a matching way;
the large bevel gear is fixedly arranged on the bevel gear seat;
and the small bevel gear shaft is meshed with the large bevel gear and is connected with the input end of the generator.
Optionally, in the tidal current energy generation gearbox, the bevel gear seat is in spline fit connection with the secondary sun gear.
Optionally, the tidal current energy generation gearbox further comprises:
the connecting cover is connected with the rear box body and is used for connecting a generator shell;
the coupler is used for connecting the output end of the small bevel gear shaft with the input end of the generator and is arranged in the connecting cover;
the sealing assembly is arranged at the position, facing the mounting hole of the connecting cover, of the rear box body, and the output end of the small bevel gear shaft is connected with the coupler through the mounting hole.
Optionally, in the tidal current energy generation gearbox, the coupling is an elastic pin coupling with a brake;
the sealing assembly is made of double-lip type sealing;
the connecting cover is provided with a connecting plate, and the connecting plate at least comprises a first mounting hole for the control wire and the power wire to pass through and a second mounting hole for the high-pressure oil pipe for supplying oil to the brake to pass through.
Optionally, the tidal current energy power generation gearbox further comprises a lubricating oil system arranged in the tidal current energy power generation gearbox;
the lubricating oil system includes:
the oil duct is arranged in the tidal current energy power generation gearbox and is provided with an oil pumping hole positioned on the main spindle box;
the pump set is connected in series on the oil passage and used for providing power;
the filter is connected in series with the oil duct and is used for filtering impurities in the lubricating oil in the oil duct;
and the overflow valve is connected in series on the oil duct and used for adjusting oil pressure.
Optionally, in the tidal current energy generation gearbox, an outer wall of the gearbox is a heat exchange surface for directly contacting with water;
and a waterproof coating is arranged on the outer wall of the gear box.
According to the technical scheme, the utility model provides a trend can electricity generation gear box, the one end and the mutual fixed connection of wheel hub that the main shaft stretches out the main shaft box to realize the two way seal of the one end that the main shaft stretches out the main shaft box through mechanical seal device. The tidal current energy is contacted with the blades so as to drive the hub and the main shaft to rotate, and the rotating power is transmitted to the input end of the generator through the gear transmission structure, so that the operation of converting the kinetic energy of the tidal current energy into electric energy is realized. The hub is directly arranged on the main shaft, so that the operation that the rotating shaft with the hub is independently arranged and is connected with the input shaft of the tidal current energy power generation gearbox through the coupler is avoided. Namely, the input shaft (main shaft) of the tidal current energy power generation gearbox is directly used as the rotating shaft of the hub, so that the size of the tidal current energy power generation gearbox is effectively reduced, and the cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic front view of a tidal current energy power generation gearbox in an embodiment of the present invention;
fig. 2 is the utility model discloses a trend can generate electricity gear box's side view schematic diagram.
Detailed Description
The utility model discloses a trend can electricity generation gear box to reduce volume, reduce cost.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 and 2, an embodiment of the present invention provides a tidal current energy power generation gearbox, which includes a gearbox, a hub with blades, a spindle 3 disposed in a spindle box 6, a mechanical sealing device 1 for sealing the spindle box 6 in two directions, and a gear transmission structure disposed in the gearbox. The gear box comprises a main shaft box body 6; one end of the main shaft 3 extending out of the main shaft box body 6 is fixedly connected with the hub; the mechanical sealing device 1 is arranged at one end of the main shaft 3 extending out of the main shaft box body 6, the main shaft 3 is an input shaft of a gear transmission structure, and an output end of the gear transmission structure is connected with an input end of a generator.
The embodiment of the utility model provides a trend can electricity generation gear box, the one end and the mutual fixed connection of wheel hub that main shaft 3 stretches out main shaft box 6 to realize the two way seal of the one end that main shaft 3 stretches out main shaft box 6 through mechanical seal device 1. Tidal current energy is contacted with the blades so as to drive the hub and the main shaft 3 to rotate, and the rotating power is transmitted to the input end of the generator through the gear transmission structure, so that the operation of converting the kinetic energy of the tidal current energy into electric energy is realized. The hub is directly arranged on the main shaft 3, so that the operation that the rotating shaft with the hub is independently arranged and is connected with the input shaft of the tidal current energy power generation gearbox through the coupler is avoided. Namely, the input shaft (main shaft 3) of the tidal current energy power generation gearbox is directly used as the rotating shaft of the hub, so that the size of the tidal current energy power generation gearbox is effectively reduced, and the cost is reduced.
It will be appreciated that the spindle 3 is rotatably disposed within the spindle housing 6. Preferably, both ends of the main spindle 3 are supported on the main spindle housing 6 through a double-row tapered roller bearing 2 and a short cylindrical roller bearing 4, respectively. In this embodiment, the hub is sleeved outside the main shaft 3 and fixed to the main shaft 3 by bolts. The mechanical seal device 1 is a rotary mechanical seal, and preferably is a dynamic and static seal structure.
In this embodiment, the number of blades on the hub is three, but other numbers may be provided.
Furthermore, the gear box also comprises a transmission gear box 8 and a rear box body 12 which are sequentially connected with the main shaft box body 6; the gear transmission structure comprises a gear variable transmission structure arranged in the transmission gear box 8 and a gear steering transmission structure arranged in the rear box body 12; the input shaft of the gear speed-changing transmission structure is a main shaft 3; the transmission input end of the gear steering transmission structure is connected with the transmission output end of the gear variable transmission structure, and the transmission output end of the gear steering transmission structure is connected with the input end of the generator. The gear speed change transmission structure realizes the increase of the rotating speed, and the gear steering transmission structure realizes the change of the transmission direction of the rotating shaft. The gear steering transmission structure is arranged, so that the situation that the generator is arranged at one end, away from the hub, of the tidal current energy power generation gear box is avoided, the flexibility of connection between the generator and the tidal current energy power generation gear box is improved, and convenience is brought to the installation flexibility of the tidal current energy power generation gear box.
In order to reduce the joint surface, the transmission gear box 8 is a ring gear with a primary meshing tooth part and a secondary meshing tooth part; the gear change transmission structure further comprises: a primary planet carrier 7 connected with the main shaft 3, wherein the primary planet carrier 7 is provided with a primary planet wheel which is meshed with a primary meshing tooth part of the gear ring; a primary sun gear 9 meshed with the primary planetary gear; a secondary planet carrier 10 connected with the primary sun gear 9, the secondary planet carrier 10 having a secondary planet gear which meshes with a secondary meshing tooth of the ring gear; and the secondary sun gear 11 is meshed with the secondary planet gear, and the secondary sun gear 11 is connected with the transmission input end of the gear steering transmission structure. With the above arrangement, on the basis of ensuring two-stage speed increase (primary speed increase and secondary speed increase), the primary meshing tooth portion and the secondary meshing tooth portion are provided on the same ring gear, and the ring gear is the transmission gear case 8 provided between the main shaft case 6 and the rear case 12. Through the arrangement, the operation of additionally arranging the gear rings in the gear box is effectively avoided, the operation of arranging two separate and independent gear rings is also avoided, the combination surface is effectively reduced, the primary meshing tooth part and the secondary meshing tooth part are designed into a whole, the number of mounting surfaces is reduced, and the water leakage risk is reduced.
In addition, the primary planet carrier 7 floats on the main shaft 3, and the structure of the floating planet carrier is adopted, so that the load balancing effect of the planet multi-split structure is improved, and the meshing of gears is facilitated.
For stability of the fit, the main shaft 3 is splined to the primary carrier 7. Further, the primary planet carrier 7 is limited on the main shaft 3 through bolts and a pressure plate. The primary sun gear 9 and the secondary carrier 10 are splined.
Further, the gear steering transmission structure includes: a bevel gear seat is rotatably arranged in the rear box body 12 and is connected with the secondary sun gear 11 in a matching way; the large bevel gear 13 and the large bevel gear 13 are fixedly arranged on the bevel gear seat; and a small bevel gear shaft 15 meshed with the large bevel gear 13, wherein the small bevel gear shaft 15 is connected with the input end of the generator. It can be understood that the number of teeth of the large bevel gear 13 is greater than that of the small bevel gear shaft 15, so that the bevel gear set composed of the large bevel gear 13 and the small bevel gear shaft 15 increases the system rotation speed again on the basis of meeting the steering requirement.
Preferably, both ends of the bevel gear seat are supported on the rear case 12 by a double row tapered roller bearing and a short cylindrical roller bearing, respectively.
Likewise, the bevel gear seat is spline-fitted to the secondary sun gear 11 for stability of fitting.
The trend can electricity generation gear box still includes: a connecting cover 22 connected to the rear case 12 and used for connecting a generator case; a coupling 17 for connecting the output end of the pinion shaft 15 with the input end of the generator, the coupling 17 being disposed in the connecting cover 22; and the sealing assembly 14 is arranged at a mounting hole of the rear box body 12 facing the connecting cover 22, and the output end of the small bevel gear shaft 15 is connected with the coupler 17 through the mounting hole. The connecting cover 22 is arranged so as to be convenient for connecting the rear box body and the generator, and has the functions of sealing, protecting and the like. As shown in fig. 2, the side of the connection cover 22 facing the rear case 12 has a connection structure 21 so as to be closely fitted with the outer wall of the cylindrical rear case 12. Wherein the connection cover 22 can be used as a motor base.
Preferably, the seal assembly 14 is a seal assembly made of a double lip type seal, primarily to prevent foreign matter from entering the gearbox therethrough.
In this embodiment, the coupling 17 is an elastic pin coupling with a brake 16; the seal assembly 14 is a seal assembly made of a double lip type seal. Through the arrangement, the braking requirement is met on the basis of ensuring sealing.
In order to facilitate the connection operation, the connection cover 22 is provided with a connection plate 23, and the connection plate 23 at least comprises a first mounting hole for the control wire and the power wire to pass through and a second mounting hole for the high-pressure oil pipe for supplying oil to the brake 16 to pass through.
The tidal current energy power generation gearbox provided by the embodiment of the utility model also comprises a lubricating oil system arranged in the tidal current energy power generation gearbox; the lubricating oil system includes: the oil duct is arranged in the tidal current energy power generation gearbox and is provided with an oil pumping hole 5 positioned on the main shaft box body 6; a pump group 20 connected in series to the oil passage for providing power; a filter 19 connected in series with the oil passage and used for filtering impurities in the lubricating oil in the oil passage; and a relief valve 18 connected in series to the oil passage for regulating oil pressure. Through the arrangement, the lubricating oil flows in the oil duct, and the lubricating and cooling effects are realized.
In this embodiment, the outer wall of the gear box is a heat exchange surface for direct contact with water; and a waterproof coating is arranged on the outer wall of the gear box. The outer wall of the gear box is directly contacted with water, so that a protective cover of the gear box for seawater is removed; and, be provided with the water proof coating (if special paint carries out coating processing) on the outer wall of gear box. The coating is adopted to play a role in preventing corrosion while improving the heat exchange efficiency. Further reducing the production cost.
In this embodiment, the joint surfaces of the main spindle box 6 and the transmission gear box 8, the joint surfaces of the transmission gear box 8 and the rear box 12, the joint cover 22 and the generator, and the like, are designed to be redundant in static sealing by using double O-rings.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A tidal current energy generation gearbox, comprising:
a gearbox comprising a main shaft housing (6);
a hub having blades;
the main shaft (3) is arranged in the main shaft box body (6), and one end, extending out of the main shaft box body (6), of the main shaft (3) is fixedly connected with the hub;
the mechanical sealing device (1) is arranged at one end, extending out of the main shaft box body (6), of the main shaft (3) and is used for sealing the main shaft box body (6) in a two-way mode;
the gear transmission structure is arranged in the gear box, the main shaft (3) is an input shaft of the gear transmission structure, and an output end of the gear transmission structure is connected with an input end of the generator.
2. The tidal current energy generation gearbox as set forth in claim 1, further comprising a transmission gearbox (8) and a rear box (12) which are sequentially connected with the main shaft box (6);
the gear transmission structure comprises a gear variable transmission structure arranged in the transmission gear box (8) and a gear steering transmission structure arranged in the rear box body (12);
the input shaft of the gear speed-changing transmission structure is the main shaft (3); the transmission input end of the gear steering transmission structure is connected with the transmission output end of the gear variable transmission structure, and the transmission output end of the gear steering transmission structure is connected with the input end of the generator.
3. Tidal current energy generating gearbox according to claim 2, characterized in that the transmission gearbox (8) is a ring gear with primary and secondary meshing teeth;
the gear change transmission structure further includes:
a primary planet carrier (7) connected with the main shaft (3), wherein the primary planet carrier (7) is provided with primary planet wheels which are meshed with the primary meshing teeth of the gear ring;
a primary sun gear (9) meshing with the primary planet gears;
a secondary planet carrier (10) connected to the primary sun gear (9), the secondary planet carrier (10) having secondary planet gears thereon, the secondary planet gears meshing with a secondary meshing tooth of the ring gear;
and the secondary sun wheel (11) is meshed with the secondary planet wheel, and the secondary sun wheel (11) is connected with the transmission input end of the gear steering transmission structure.
4. Tidal current energy generating gearbox according to claim 3, characterized in that the main shaft (3) is splined to the primary planet carrier (7);
and/or the primary sun gear (9) is connected with the secondary planet carrier (10) through a spline.
5. The tidal current energy generating gearbox of claim 3, wherein the geared steering drive comprises:
a bevel gear seat rotatably arranged in the rear box body (12), and the bevel gear seat is connected with the secondary sun gear (11) in a matching way;
the large bevel gear (13), the said large bevel gear (13) is fixedly arranged on the said bevel gear seat;
and the small bevel gear shaft (15) is meshed with the large bevel gear (13), and the small bevel gear shaft (15) is connected with the input end of the generator.
6. Tidal current energy generation gearbox according to claim 5, characterized in that the bevel gear seat is spline-fitted connected with the secondary sun gear (11).
7. The tidal current energy generating gearbox of claim 5, further comprising:
a connecting cover (22) connected with the rear box body (12) and used for connecting a generator shell;
a coupling (17) for connecting the output of the bevel pinion shaft (15) with the input of the generator, the coupling (17) being arranged in the connecting hood (22);
the sealing assembly (14) is arranged at the position, facing the mounting hole of the connecting cover (22), of the rear box body (12), and the output end of the small bevel gear shaft (15) is connected with the coupler (17) through the mounting hole.
8. Tidal current energy generating gearbox according to claim 7, characterized in that the coupling (17) is a resilient pin coupling with a brake (16);
the sealing assembly (14) is a sealing assembly made of a double-lip type seal;
the connecting cover (22) is provided with a connecting plate (23), and the connecting plate (23) at least comprises a first mounting hole for a control line and a power line to pass through and a second mounting hole for a high-pressure oil pipe for supplying oil to the brake (16) to pass through.
9. The tidal current energy generating gearbox of claim 1, further comprising a lubricating oil system disposed within the tidal current energy generating gearbox;
the lubricating oil system includes:
the oil duct is arranged in the tidal current energy power generation gearbox and is provided with an oil pumping hole (5) positioned on the main shaft box body (6);
a pump group (20) connected in series on the oil passage and used for providing power;
the filter (19) is connected in series with the oil duct and is used for filtering impurities in the lubricating oil in the oil duct;
and the overflow valve (18) is connected in series with the oil passage and is used for adjusting oil pressure.
10. The tidal current energy generation gearbox of any one of claims 1 to 9, wherein the outer wall of the gearbox is a heat exchange surface for direct contact with water;
and a waterproof coating is arranged on the outer wall of the gear box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921261630.9U CN211039620U (en) | 2019-08-06 | 2019-08-06 | Tidal current energy power generation gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921261630.9U CN211039620U (en) | 2019-08-06 | 2019-08-06 | Tidal current energy power generation gear box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211039620U true CN211039620U (en) | 2020-07-17 |
Family
ID=71559923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921261630.9U Active CN211039620U (en) | 2019-08-06 | 2019-08-06 | Tidal current energy power generation gear box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211039620U (en) |
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2019
- 2019-08-06 CN CN201921261630.9U patent/CN211039620U/en active Active
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