CN215486396U - Wind turbine generator system self-adaptation clearance seal structure and wind turbine generator system - Google Patents
Wind turbine generator system self-adaptation clearance seal structure and wind turbine generator system Download PDFInfo
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- CN215486396U CN215486396U CN202120902345.1U CN202120902345U CN215486396U CN 215486396 U CN215486396 U CN 215486396U CN 202120902345 U CN202120902345 U CN 202120902345U CN 215486396 U CN215486396 U CN 215486396U
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Abstract
The utility model provides a self-adaptive gap sealing structure of a wind turbine generator and the wind turbine generator. The utility model solves the problem that external impurities such as rain, snow, sand, dust or salt fog and the like easily enter the wind turbine generator through the gap between the rotating part and the non-rotating part to influence the performance and the service life of the wind turbine generator in the prior art.
Description
Technical Field
The utility model relates to the technical field of wind power generation devices, in particular to a self-adaptive gap sealing structure of a wind turbine generator and the wind turbine generator.
Background
Wind energy will play an increasingly important role in future energy structures as a clean renewable energy source. Usually, the natural conditions of places with rich wind resources are severe, such as sand and dust environment, rain and snow environment or strong salt fog environment. If the wind power generation set enters the wind power generation set, the damage influence can be caused to electrical and mechanical metal parts in the wind power generation set.
The principle of wind energy capture of the wind turbine generator system is that wind is utilized to push a wind wheel to rotate so as to convert wind energy into electric energy, and therefore, the relationship between a rotating part and a non-rotating part is necessarily existed. The relative rotation inevitably causes gaps, so that impurities in the external environment, which affect the performance and the service life of the wind turbine, can enter the wind turbine from the gaps. Particularly, the outer ring rotating permanent magnet direct drive unit and the double-fed unit are adopted, a wider gap is required at the matching position of the cabin cover and the generator of the outer ring rotating permanent magnet direct drive unit, the cabin cover made of glass fiber reinforced plastics is poor in precision, the assembling precision is not good, in addition, the matching gap is also required inevitably when the cabin and the generator are in butt joint, and the matching condition is the same as that of the double-fed unit air guide sleeve and the cabin cover. When a gap exists, due to the turbulent flow effect of external air, the static pressures of air at different positions have difference values, external wind can easily enter the wind turbine, so that external impurities such as rain, snow, sand, dust or salt mist and the like can inevitably enter the wind turbine, the external impurities are very unfavorable for the safe and stable operation of the wind turbine, measures are needed to shield the external impurities from various influences on the inside, and therefore the gap must be blocked in an effective and reliable mode. In the prior art, obstacles such as brushes and the like are often arranged at the gaps to fill the gaps, but the gaps are not always fixed and not changed, so that the effect is poor, and the technical problem is not effectively solved.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a self-adaptive gap sealing structure of a wind turbine generator and the wind turbine generator, and solves the problem that external impurities such as rain, snow, sand, dust or salt mist easily enter the wind turbine generator through a gap between a rotating part and a non-rotating part to influence the performance and the service life of the wind turbine generator in the prior art.
The technical scheme adopted by the utility model for solving the problems is as follows:
the utility model provides a wind turbine generator system self-adaptation clearance seal structure, includes the mounting, rotates the piece, rotate the piece and can rotate for the mounting, still including locating the mounting, rotate the flexible piece between the piece, the one end of flexible piece links to each other with the mounting, the other end of flexible piece with it has the clearance to rotate the piece.
The fixed part is as non-rotating member, rotates the piece as rotating member, and the setting of flexible piece is convenient for reduce the clearance between fixed part and the rotation piece by a wide margin. The flexible piece has certain elasticity, and it can stretch out and draw back under the effect of external force to the other end of self-adaptation dynamic adjustment flexible piece with the size in clearance between the rotation piece, so that can reduce the mounting by a wide margin and rotate the clearance between the piece, do not block moreover and rotate the piece and rotate normal work for the mounting.
As a preferred technical solution, a contact element is connected to one end of the flexible element close to the rotating element, and the contact element has a gap with the rotating element.
The contact element plays a role of pulling the flexible element close to the rotating element, so that the gap between the fixed element and the rotating element is reduced more effectively.
Preferably, a rolling member is connected to the contact member, and the rolling member is in contact with the rotating member.
The rolling member is protruding outside the contact, and with rotate the piece contact, when rotating the piece and rotate, the contact is followed and is rotated, and this makes and more is favorable to adaptive control the contact with clearance size between the piece rotates is the constant value, is favorable to reducing more that outside impurity such as sleet, sand and dust or salt fog passes through the mounting and rotates the clearance between the piece and gets into wind turbine generator system's risk.
As a preferred technical scheme, the rolling member is a sliding roller, one surface of the contact member, which is close to the fixing member, is connected with a roller seat, the rolling member is connected with the roller seat, and the rolling member penetrates through the contact member and contacts with the rotating member.
When rotating the piece and rotating, the rolling member is followed and is rolled to convenient adaptive control the contact with clearance size between the piece rotates is the constant value, is favorable to having reduced external impurities such as sleet, sand and dust or salt fog more and has got into wind turbine generator's risk through the fixed part and the clearance between the piece that rotates.
As a preferred technical scheme, the contact member is connected with a telescopic device, and the telescopic device can drive the contact member to move in a gap between the fixed member and the rotating member.
The telescoping device is because can drive the contact at the mounting, rotate the clearance removal between the piece, then the adaptive control of being convenient for more the contact with the clearance size between the piece that rotates is the constant value, is favorable to having reduced external impurity such as sleet, sand and dust or salt fog more and has got into wind turbine generator's risk through the mounting and the clearance between the piece that rotates.
As a preferred technical scheme, the telescoping device includes spliced pole, connecting pipe, the spliced pole can slide in the connecting pipe, the one end and the mounting of spliced pole are connected, the other end quilt of spliced pole the pot head of connecting pipe is located in, the other end and the contact of connecting pipe are connected.
The connecting column and the connecting pipe limit the contact piece together, so that a guiding effect is achieved, and the contact piece is ensured to move on one straight line; the connecting column can slide in the connecting pipe, so that the contact element can be driven to move conveniently according to the rotation condition of the rotating element, and the size of a gap between the contact element and the rotating element is controlled to be a constant value in a self-adaptive mode; in addition, the connecting column and the connecting pipe also play a role in damping and absorb kinetic energy transmitted by the rotation of the rotating part.
As a preferred technical scheme, the telescopic device further comprises a spring, and the spring is sleeved outside the connecting column and/or the connecting pipe.
The spring further plays a role in shock absorption and further absorbs kinetic energy transferred by the rotation of the rotating part.
Preferably, a filling member is connected to a surface of the contact member adjacent to the rotating member.
The filler is used for filling the contact and rotates the clearance between the piece, is convenient for further reduce outside impurity such as sleet, sand and dust or salt fog through the mounting and rotate the clearance between the piece and get into wind turbine generator system's risk.
As a preferred technical solution, the fixed part is a nacelle cover, and the rotating part is a generator outer ring.
The cabin cover and the outer ring of the generator are structures which can easily enable external impurities such as rain, snow, sand, dust or salt mist to enter the wind turbine generator set through the gap between the cabin cover and the outer ring of the generator, so that the wind turbine generator set is effectively suitable for scenes in urgent need, is particularly suitable for the permanent magnet direct drive set with the rotating outer ring, and has a wider gap at the matching part of the cabin cover and the generator of the permanent magnet direct drive set with the rotating outer ring (because the cabin cover made of glass fiber reinforced plastics has poor precision and meanwhile the assembling precision is not good too much). The utility model can obtain better effect in the application scene of the butt joint of the engine room and the generator and the application scene of the double-fed unit dome and the engine room cover. Preferably, the fixed part, the rotating part, the flexible part and the contact part are all circular rings, and such a structure is common in wind turbines.
A wind turbine generator comprises the self-adaptive gap sealing structure of the wind turbine generator.
The wind turbine generator comprises the self-adaptive gap sealing structure of the wind turbine generator. The fixed part is as non-rotating member, rotates the piece as rotating member, and the setting of flexible piece is convenient for reduce the clearance between fixed part and the rotation piece by a wide margin. The flexible piece has certain elasticity, and it can stretch out and draw back under the effect of external force to the other end of self-adaptation dynamic adjustment flexible piece with the size in clearance between the rotation piece, so that can reduce the mounting by a wide margin and rotate the clearance between the piece, do not block moreover and rotate the piece and rotate normal work for the mounting. Preferably, the position of the fixing member is not changed. The utility model effectively reduces the risk that external impurities such as rain, snow, sand, dust or salt mist enter the wind turbine through the gap between the fixed part and the rotating part, thereby effectively improving the performance and the service life of the wind turbine.
Compared with the prior art, the utility model has the following beneficial effects:
(1) the fixed part is used as a non-rotating part, the rotating part is used as a rotating part, and the flexible part is arranged, so that the gap between the fixed part and the rotating part is greatly reduced. The flexible part has certain elasticity and can stretch out and draw back under the action of external force, so that the size of a gap between the other end of the flexible part and the rotating part is self-adaptively and dynamically adjusted, the gap between the fixed part and the rotating part can be greatly reduced, and the rotating part is not prevented from rotating relative to the fixed part to normally work;
(2) the contact element plays a role in pulling the flexible element to be close to the rotating element, so that the gap between the fixed element and the rotating element is effectively reduced;
(3) the rolling part protrudes out of the contact part and is contacted with the rotating part, and the contact part rotates along with the rotating part when the rotating part rotates, so that the size of a gap between the contact part and the rotating part is controlled to be a constant value in a self-adaptive mode, and the risk that external impurities such as rain, snow, sand, dust or salt mist enter the wind turbine through the gap between the fixed part and the rotating part is reduced;
(4) according to the arrangement of the sliding roller, the roller seat and the telescopic device, the size of the gap between the contact element and the rotating element can be controlled to be a constant value in a self-adaptive manner, and the risk that external impurities such as rain, snow, sand, dust or salt mist enter the wind turbine through the gap between the fixed element and the rotating element can be reduced;
(5) the connecting column and the connecting pipe limit the contact piece together, so that a guiding effect is achieved, and the contact piece is ensured to move on one straight line; the connecting column can slide in the connecting pipe, so that the contact element can be driven to move conveniently according to the rotation condition of the rotating element, and the size of a gap between the contact element and the rotating element is controlled to be a constant value in a self-adaptive mode; in addition, the connecting column and the connecting pipe also play a role in damping and absorb kinetic energy transferred by the rotation of the rotating part;
(6) the telescopic device also comprises a spring, wherein the spring is sleeved outside the connecting column and/or the connecting pipe, so that the damping effect is further realized, and the kinetic energy transmitted by the rotation of the rotating part is further absorbed;
(7) the filling piece is used for filling the gap between the contact piece and the rotating piece, so that the risk that external impurities such as rain, snow, sand, dust or salt mist enter the wind turbine generator through the gap between the fixed piece and the rotating piece is further reduced;
(8) the fixed part is the engine room cover, the rotating part is the outer ring of the generator, and the engine room cover and the outer ring of the generator are structures which can easily enable external impurities such as rain, snow, sand, dust or salt mist to enter the wind generator set through gaps between the engine room cover and the outer ring of the generator, so that the wind generator set is effectively applicable to scenes in urgent need.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view taken along plane A-A of FIG. 1;
fig. 3 is a partially enlarged view of the region S of fig. 2.
Reference numbers and corresponding part names in the drawings: 1. the device comprises a fixed piece, 2, a rotating piece, 3, a flexible piece, 4, a spring, 5, a contact piece, 6, a rolling piece, 7, a connecting column, 8, a filling piece, 9, a roller seat, 10, a connecting pipe, 11 and a telescopic device.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited to these examples.
Example 1
As shown in fig. 1 to 3, a wind turbine generator system self-adaptation clearance seal structure, includes mounting 1, rotates piece 2, it can rotate for mounting 1 to rotate piece 2, still including locating mounting 1, rotate the flexible piece 3 between piece 2, the one end of flexible piece 3 links to each other with mounting 1, the other end of flexible piece 3 with it has the clearance to rotate piece 2.
The fixed part 1 is as non-rotating part, rotates the piece 2 as rotating part, and the setting of flexible piece 3 is convenient for reduce the clearance between fixed part 1 and the piece 2 of rotating by a wide margin. The flexible part 3 has certain elasticity, and it can stretch out and draw back under the effect of external force to the other end of self-adaptation dynamic adjustment flexible part 3 with the size in clearance between the rotation piece 2, so that can reduce the clearance between fixed part 1 and the rotation piece 2 by a wide margin, do not block moreover to rotate the piece 2 and rotate normal work for fixed part 1. Preferably, the position of the fixing member 1 is not changed. The utility model effectively reduces the risk that external impurities such as rain, snow, sand, dust or salt mist enter the wind turbine through the gap between the fixed part 1 and the rotating part 2, thereby effectively improving the performance and the service life of the wind turbine.
As a preferred technical solution, a contact piece 5 is connected to one end of the flexible piece 3 close to the rotating piece 2, and the contact piece 5 has a gap with the rotating piece 2.
The contact member 5 serves to pull the flexible member 3 in a direction close to the rotating member 2, thereby more effectively reducing the gap between the fixed member 1 and the rotating member 2.
As a preferred solution, a rolling element 6 is connected to the contact element 5, and the rolling element 6 is in contact with the rotor 2.
Rolling member 6 is protruding outside contact 5, and with rotate 2 contacts, when rotating 2 rotations, contact 5 follows the rotation, and this makes more favorable to adaptive control contact 5 with it is the constant value to rotate the clearance size between 2, is favorable to more having reduced outside impurity such as sleet, sand and dust or salt fog through fixed part 1 and the risk that the clearance between the rotation piece 2 got into wind turbine generator system.
As a preferable technical scheme, the rolling element 6 is a sliding roller, one surface of the contact element 5 close to the fixed element 1 is connected with a roller seat 9, the rolling element 6 is connected with the roller seat 9, and the rolling element 6 penetrates through the contact element 5 to be in contact with the rotating element 2.
When rotating piece 2 and rotating, rolling member 6 follows the roll to convenient adaptive control contact 5 with the clearance size of rotating between the piece 2 is the constant value, is favorable to having reduced external impurities such as sleet, sand and dust or salt fog more and has got into wind turbine generator's risk through the fixed part 1 and the clearance that rotates between the piece 2.
Example 2
As shown in fig. 1 to fig. 3, as a further optimization of embodiment 1, this embodiment includes all the technical features of embodiment 1, and in addition, this embodiment further includes the following technical features:
as a preferred solution, a telescopic device 11 is connected to the contact piece 5, and the telescopic device 11 can drive the contact piece 5 to move in the gap between the fixed member 1 and the rotating member 2.
As a preferred technical scheme, telescoping device 11 includes spliced pole 7, connecting pipe 10, spliced pole 7 can slide in connecting pipe 10, the one end and the mounting 1 of spliced pole 7 are connected, the other end quilt of spliced pole 7 the one end cover of connecting pipe 10 is located in, the other end and the contact 5 of connecting pipe 10 are connected.
The connecting column 7 and the connecting pipe 10 limit the contact element 5 together, so that a guiding effect is achieved, and the contact element 5 is ensured to move on one straight line; the connecting column 7 can slide in the connecting tube 10, so that the contact element 5 can be driven to move according to the rotation condition of the rotating element 2, and the size of the gap between the contact element 5 and the rotating element 2 is controlled to be a constant value in a self-adaptive manner; in addition, the connecting column 7 and the connecting tube 10 also play a role of damping and absorb the kinetic energy transferred by the rotation of the rotating member 2.
As a preferred technical solution, the telescopic device 11 further comprises a spring 4, and the spring 4 is sleeved outside the connecting column 7 and/or the connecting tube 10.
The spring 4 further acts as a shock absorber, further absorbing the kinetic energy transferred from the rotation of the rotation member 2. The two ends of the spring 4 are respectively contacted with or fixedly connected with the fixed part 1 and the rotating part 2.
As a preferred solution, a filler 8 is connected to one surface of the contact piece 5 close to the rotor 2.
The filling piece 8 is used for filling the gap between the contact piece 5 and the rotating piece 2, so that the risk that external impurities such as rain, snow, sand, dust or salt fog enter the wind turbine through the gap between the fixing piece 1 and the rotating piece 2 is further reduced. Preferably a wear resistant material; preferably a filler having elasticity, so as to allow the filler to adapt to the gap space; the sealing felt strip is preferred, and has better abrasion resistance and elastic property.
As a preferred technical solution, the fixed part 1 is a nacelle cover, and the rotating part 2 is a generator outer ring.
The cabin cover and the outer ring of the generator are structures which can easily enable external impurities such as rain, snow, sand, dust or salt mist to enter the wind turbine generator set through the gap between the cabin cover and the outer ring of the generator, so that the wind turbine generator set is effectively suitable for scenes in urgent need, is particularly suitable for the permanent magnet direct drive set with the rotating outer ring, and has a wider gap at the matching part of the cabin cover and the generator of the permanent magnet direct drive set with the rotating outer ring (because the cabin cover made of glass fiber reinforced plastics has poor precision and meanwhile the assembling precision is not good too much). The utility model can obtain better effect in the application scene of the butt joint of the engine room and the generator and the application scene of the double-fed unit dome and the engine room cover. Preferably, the fixed member 1, the rotating member 2, the flexible member 3, and the contact member 5 are all circular rings, which is common in wind turbines.
Example 3
As shown in fig. 1 to 3, a wind turbine generator includes the adaptive gap sealing structure of the wind turbine generator.
The wind turbine generator comprises the self-adaptive gap sealing structure of the wind turbine generator. The fixed part 1 is as non-rotating part, rotates the piece 2 as rotating part, and the setting of flexible piece 3 is convenient for reduce the clearance between fixed part 1 and the piece 2 of rotating by a wide margin. The flexible part 3 has certain elasticity, and it can stretch out and draw back under the effect of external force to the other end of self-adaptation dynamic adjustment flexible part 3 with the size in clearance between the rotation piece 2, so that can reduce the clearance between fixed part 1 and the rotation piece 2 by a wide margin, do not block moreover to rotate the piece 2 and rotate normal work for fixed part 1. Preferably, the position of the fixing member 1 is not changed. The utility model effectively reduces the risk that external impurities such as rain, snow, sand, dust or salt mist enter the wind turbine through the gap between the fixed part 1 and the rotating part 2, thereby effectively improving the performance and the service life of the wind turbine.
Example 4
As shown in fig. 1 to 3, on the basis of embodiments 1 to 3, the present embodiment provides a more detailed technical solution to illustrate the present invention.
Taking a direct-drive wind turbine generator with a rotating outer ring as an example, the fixed part 1 is a front-end local structure of the engine room cover, the rotating part 2 is a reinforcing disc of a direct-drive generator rotor, and a design gap exists between the fixed part and the reinforcing disc. The flexible part 3 is an annular flexible connection structure, the front end of the cabin cover is connected with the contact part 5 (the contact part 5 is annular), the fixed part 1 is static, and when the contact part 5 moves in the direction of the rotation axis of the wind wheel, the annular flexible connection can be deformed and adapted. The contact element 5 is provided with a rolling element 6 (the rolling element 6 is a roller) and a connecting pipe 10, the rolling element 6 is arranged on the contact element 5 through a roller seat 9, the rolling element 6 protrudes out of the contact element 5 to a certain height towards the end face of the generator rotor rotating piece 2, the rolling element 6 is in contact with the end face of the generator rotor rotating piece 2, when the generator rotor rotating piece 2 rotates, the rolling element 6 rotates, and the contact element 5 and the generator rotor rotating piece 2 are guaranteed to have a constant value gap in the circumferential direction. The spring 4 is used for applying an acting force between the contact disc and the nacelle cover to ensure that the contact wheel is always in contact with the end face of the generator rotor. The connecting column 7 and the connecting pipe 10 act together to limit the contact piece 5, and ensure that the contact piece only moves towards the direction of the rotating axis of the wind wheel. The filling member 8 is a sealing felt strip, is arranged on the contact member 5, is used for filling a reserved gap between the filling member and the generator rotor, and can be worn to a certain height so as to be in full contact with the surface of the generator rotor, so that the designed gap between the cabin cover and the generator can realize air full sealing and is adaptive to the gap space.
The self-adaptive gap sealing structure can carry out air sealing on the gap between two mutually rotating components. The front end of the fixed part 1 is provided with a certain number of pairs of connecting columns 7 and springs 4, the contact element 5 is connected with the front end fixed part 1 of the cabin cover through an annular flexible connection flexible part 3, the contact element 5 is provided with a pair of rolling parts 6 with the same number as the springs 4, the rolling parts 6 are higher than the surface of the contact element 5 by a proper distance, the rolling parts 6 on the contact element 5 are contacted with the outer rotor end face rotating part 2 of the generator through the stretching action of the springs 4, the end face of the contact disc and the rotor end face have a constant interval in the annular direction, and then the sealing felt strips are used for filling small gaps between the contact disc and the generator, so that the felt strips are allowed to be worn to a certain height, and the designed gap between the cabin cover and the generator can realize air full sealing.
As described above, the present invention can be preferably realized.
The foregoing is only a preferred embodiment of the present invention, and the present invention is not limited thereto in any way, and any simple modification, equivalent replacement and improvement made to the above embodiment within the spirit and principle of the present invention still fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a wind turbine generator system self-adaptation clearance seal structure, includes mounting (1), rotates piece (2), it can rotate for mounting (1) to rotate piece (2), its characterized in that still including locating mounting (1), rotate flexible piece (3) between piece (2), the one end of flexible piece (3) links to each other with mounting (1), the other end of flexible piece (3) with it has the clearance to rotate piece (2).
2. The wind turbine generator system self-adaptive gap sealing structure according to claim 1, wherein a contact member (5) is connected to one end of the flexible member (3) close to the rotating member (2), and the contact member (5) has a gap with the rotating member (2).
3. The wind turbine generator system self-adaptive gap sealing structure according to claim 2, wherein a rolling member (6) is connected to the contact member (5), and the rolling member (6) is in contact with the rotating member (2).
4. The self-adaptive gap sealing structure of the wind turbine generator set according to claim 3, wherein the rolling element (6) is a sliding roller, one surface of the contact element (5) close to the fixing element (1) is connected with a roller seat (9), the rolling element (6) is connected with the roller seat (9), and the rolling element (6) penetrates through the contact element (5) to be in contact with the rotating element (2).
5. The wind turbine generator system self-adaptive gap sealing structure according to claim 4, wherein a telescopic device (11) is connected to the contact piece (5), and the telescopic device (11) can drive the contact piece (5) to move in a gap between the fixed part (1) and the rotating part (2).
6. The wind turbine generator self-adaptive gap sealing structure according to claim 5, wherein the telescopic device (11) comprises a connecting column (7) and a connecting pipe (10), the connecting column (7) can slide in the connecting pipe (10), one end of the connecting column (7) is connected with the fixing piece (1), the other end of the connecting column (7) is sleeved with one end of the connecting pipe (10), and the other end of the connecting pipe (10) is connected with the contact piece (5).
7. The wind turbine generator system self-adaptive gap sealing structure according to claim 6, wherein the expansion device (11) further comprises a spring (4), and the spring (4) is sleeved outside the connecting column (7) and/or the connecting pipe (10).
8. The wind turbine generator system self-adaptive gap sealing structure according to claim 7, wherein a filler (8) is connected to one surface of the contact member (5) close to the rotating member (2).
9. The wind turbine generator system self-adaptive gap sealing structure according to any one of claims 1 to 8, wherein the fixed member (1) is a nacelle cover, and the rotating member (2) is a generator outer ring.
10. A wind turbine comprising a wind turbine adaptive gap seal according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120902345.1U CN215486396U (en) | 2021-04-28 | 2021-04-28 | Wind turbine generator system self-adaptation clearance seal structure and wind turbine generator system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120902345.1U CN215486396U (en) | 2021-04-28 | 2021-04-28 | Wind turbine generator system self-adaptation clearance seal structure and wind turbine generator system |
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| CN215486396U true CN215486396U (en) | 2022-01-11 |
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| CN202120902345.1U Active CN215486396U (en) | 2021-04-28 | 2021-04-28 | Wind turbine generator system self-adaptation clearance seal structure and wind turbine generator system |
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2021
- 2021-04-28 CN CN202120902345.1U patent/CN215486396U/en active Active
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