CN210371945U - Wind-powered electricity generation gear box input seal structure - Google Patents
Wind-powered electricity generation gear box input seal structure Download PDFInfo
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- CN210371945U CN210371945U CN201920965254.5U CN201920965254U CN210371945U CN 210371945 U CN210371945 U CN 210371945U CN 201920965254 U CN201920965254 U CN 201920965254U CN 210371945 U CN210371945 U CN 210371945U
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Abstract
The utility model discloses a better wind-powered electricity generation gear box input seal structure of leakproofness, planet carrier labyrinth seal's right-hand member is equipped with the radial outside annular radial seal portion that extends, planet carrier labyrinth seal's whole is located between front box end cover and the planet carrier, fixed assembly is on the planet carrier and there is small clearance between the inner wall of periphery and front box end cover, its annular radial seal portion is located the mounting groove on front box end cover right side, be close to with the inlet port on the preceding box, and there is the clearance between the left end face of annular radial seal portion and the front box end cover, its characterized in that: the annular radial sealing part of the planet carrier labyrinth seal is provided with at least one annular axial sealing part which extends leftwards from the left end of the annular radial sealing part, the mounting groove on the front box body end cover is correspondingly matched with the annular radial sealing part and the annular axial sealing part on the planet carrier labyrinth seal in shape, and the annular radial sealing part and the annular axial sealing part are positioned in the mounting groove and have a small gap with the front box body end cover.
Description
Technical Field
The utility model relates to a wind-powered electricity generation gear box seal structure, especially a wind-powered electricity generation gear box input seal structure.
Background
Referring to fig. 1, a common wind power gear box input sealing structure on the market comprises a front box body end cover 1 with a mounting groove 1-1 on the right side, a planet carrier labyrinth seal 2, a planet carrier angle sealing pressure plate 3, a planet carrier 4, a V-shaped ring seal 5, an O-shaped sealing ring 6 and an oil inlet hole 7 arranged on the right side of a front box body 11; the right end of the planet carrier labyrinth seal 2 is provided with an annular radial seal part 2-1 which extends radially outwards, the left end face of the annular radial seal part 2-1 is of a plane structure, the whole planet carrier labyrinth seal 2 is positioned between the front box body end cover 1 and the planet carrier 4, is fixedly assembled on the planet carrier 4, and a tiny gap is formed between the periphery of the planet carrier labyrinth seal 2 and the inner wall of the front box body end cover 1, the annular radial seal part 2-1 is positioned in an installation groove 1-1 on the right side of the front box body end cover 1 and is adjacent to an oil inlet hole 7 on the front box body 11, a gap is formed between the left end face of the annular radial seal part 2-1 and the front box body end cover 1, the gap is larger than 2mm, and the right end of the planet carrier corner seal pressing plate 3 and the left end of; the V-shaped ring seal 5 is sleeved on the planet carrier angle sealing pressure plate 3; the O-shaped sealing ring 6 is sleeved on the planet carrier 4 and is positioned between the inner end of the right end of the planet carrier angle sealing pressure plate 3 and the inner end of the left end of the planet carrier angle sealing pressure plate 3.
In the wind power gear box input sealing structure in the prior art, a small gap exists between the front box body end cover 1 and the planet carrier labyrinth seal 2, namely, a gap rotary seal is adopted between the front box body end cover 1 and the planet carrier labyrinth seal 2, the front box body end cover and the planet carrier labyrinth seal are not in contact with each other, and the service life is long. However, the disadvantage of the wind power gearbox input sealing structure of the prior art is also obvious, as can be seen from fig. 1, the lubricating oil coming from the oil inlet hole 7 directly enters the mounting groove 1-1 on the left side of the front box body end cover 1 from the outside, and a part of the lubricating oil flows in from the gap between the left end surface of the annular radial sealing part 2-1 and the front box body end cover 1, and as the left end surface of the annular radial sealing part 2-1 is of a plane structure and the gap between the left end surface of the annular radial sealing part 2-1 and the front box body end cover 1 is larger, more lubricating oil flows in from the gap. Therefore, when the wind power gear box runs at a low speed, lubricating oil cannot be thrown out, the lubricating oil is adhered to the surface of the planet carrier labyrinth seal 2 and slowly seeps out of the gear box along the surface of the planet carrier labyrinth seal 2, and therefore trace oil seepage is caused. In addition, lubricating oil can generate a large amount of bubbles due to the stirring of the gears when the gear box runs, the diffusion of the bubbles can cause the internal pressure of the gear box, the oil mist generated by the lubricating oil bubbles can seep out along the tiny gap between the front box body end cover 1 and the planet carrier labyrinth seal 2 under the action of the internal pressure, oil drops can seep out when the oil mist meets cold air, and the risk of oil leakage exists. In conclusion, the input sealing structure of the wind power gear box in the prior art has poor sealing performance.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a better wind-powered electricity generation gear box input seal structure of leakproofness.
In order to solve the technical problem, the input sealing structure of the wind power gear box comprises a front box body end cover, a planet carrier labyrinth seal, a planet carrier angle sealing pressing plate, a planet carrier, a V-shaped ring seal, an O-shaped sealing ring and an oil inlet hole, wherein the right side of the front box body end cover is provided with a mounting groove; the right end of the planet carrier labyrinth seal is provided with an annular radial seal part which extends radially outwards, the whole planet carrier labyrinth seal is positioned between the front box body end cover and the planet carrier and fixedly assembled on the planet carrier, a small gap is formed between the periphery of the planet carrier labyrinth seal and the inner wall of the front box body end cover, the annular radial seal part of the planet carrier labyrinth seal is positioned in the mounting groove on the right side of the front box body end cover and is adjacent to an oil inlet hole on the front box body, a gap is formed between the left end surface of the annular radial seal part and the front box body end cover, and the right end of the planet carrier angle seal pressing plate and the left end of the planet carrier; the V-shaped ring is hermetically sleeved on the planet carrier angle sealing pressure plate; o type sealing washer suit is on the planet carrier and lie in between the inner of the right-hand member of planet carrier angle seal clamp plate and the inner of planet carrier angle seal clamp plate left end, its characterized in that: be equipped with at least one by its left end annular axial seal portion that extends left on the sealed cyclic annular radial seal portion of planet carrier labyrinth, the corresponding cooperation of the sealed cyclic annular radial seal portion of mounting groove on the front box end cover and the sealed cyclic annular axial seal portion shape of planet carrier labyrinth, cyclic annular radial seal portion and cyclic annular axial seal portion be arranged in the mounting groove and with the front box end cover between have small clearance.
Preferably, the annular radial sealing part of the planet carrier labyrinth seal is provided with two annular axial sealing parts which extend leftwards from the left end of the annular radial sealing part at intervals.
Preferably, the cross-sectional shape of the annular axial sealing part on the annular radial sealing part of the planet carrier labyrinth seal is rectangular or trapezoidal or zigzag or semicircular or elliptical or parabolic or wavy.
Preferably, be equipped with the inside and outside first oil return groove of intercommunication on the mounting groove on preceding box end cover, first oil return groove be located the mounting groove with the inner corner department of the left end of the cyclic annular axial seal portion of two cyclic annular axial seal portion outer ends.
Preferably, the radial cross-sectional shape of the first oil return groove is a semicircle or a semi-ellipse or a parabola or a trapezoid or a rectangle.
Preferably, a second oil return groove communicated with the inside and the outside is further formed in the mounting groove in the front box body end cover, and the second oil return groove is located at an inner end angle of the left end of the annular axial sealing part between the mounting groove and the two annular axial sealing parts.
Preferably, the radial cross-sectional shape of the second oil return groove is a semicircle or a semi-ellipse or a parabola or a trapezoid or a rectangle.
Preferably, the labyrinth seal further comprises a sealing ring, the shape and the size of the sealing ring correspond to those of the mounting groove on the front box body end cover, the sealing ring is assembled in the mounting groove, and a small gap of 0.1mm exists between one side of the sealing ring facing the annular radial sealing part and the annular axial sealing part on the labyrinth seal of the planet carrier and the annular radial sealing part and the annular axial sealing part.
Preferably, the seal ring is made of a metal material.
Preferably, the seal ring is made of manganese steel.
The utility model has the following advantages;
because the utility model discloses in, be equipped with at least one by its left end annular axial seal portion that extends left on the sealed cyclic annular radial seal portion of planet carrier labyrinth, the corresponding cooperation of mounting groove on the front box end cover and the sealed cyclic annular radial seal portion of last and cyclic annular axial seal portion shape of planet carrier labyrinth, cyclic annular radial seal portion and cyclic annular axial seal portion be located the mounting groove and with the front box end cover between there is small clearance. Therefore, the lubricating oil entering from the oil inlet hole does not directly enter between the front box body end cover and the planet carrier labyrinth seal from the outside, but enters along the small gaps among the annular radial sealing part, the annular axial sealing part and the mounting groove after being radially and axially blocked by the annular axial sealing part and the mounting groove. Therefore, when the wind power gear box runs at a low speed, only a trace amount of lubricating oil is adhered to the labyrinth seal surface of the planet carrier, even if the rotating speed is low, the trace amount of lubricating oil does not need to be thrown away, the trace amount of lubricating oil does not slowly seep out of the gear box along the labyrinth seal surface of the planet carrier, and the trace amount of oil seepage is avoided. In addition, lubricating oil can generate a large amount of bubbles due to the stirring of the gears when the gear box runs, the diffusion of the bubbles can cause the internal pressure of the gear box, the oil mist generated by the lubricating oil bubbles can not seep out along the tiny gap between the end cover of the front box body and the labyrinth seal of the planet carrier under the action of the internal pressure, oil drops can not seep out when meeting cold air, and the risk of oil seepage is avoided. Therefore, the utility model discloses a leakproofness is better.
Drawings
FIG. 1 is a schematic view of a prior art wind turbine gearbox input seal arrangement, which, because of its symmetrical construction, is shown in its upper half only for simplicity;
fig. 2 is a schematic diagram of the input sealing structure of the wind power gear box of the present invention, which is a symmetrical structure, and the schematic diagram only shows the upper half of the input sealing structure for the sake of simplicity.
Detailed Description
The following describes in detail preferred embodiments of the present invention with reference to the accompanying drawings.
Referring to fig. 2, the wind power gear box input sealing structure of the present invention comprises a front box end cover 1 with a mounting groove 1-1 on the right side, a planet carrier labyrinth seal 2, a planet carrier corner seal pressing plate 3, a planet carrier 4, a V-shaped ring seal 5, an O-shaped seal ring 6, and an oil inlet 7 arranged on the right side of a front box 11; the right end of the planet carrier labyrinth seal 2 is provided with an annular radial seal part 2-1 which extends radially outwards, the whole planet carrier labyrinth seal 2 is positioned between the front box body end cover 1 and the planet carrier 4 and fixedly assembled on the planet carrier 4, a small gap is formed between the periphery of the planet carrier labyrinth seal 2 and the inner wall of the front box body end cover 1, the annular radial seal part 2-1 is positioned in the installation groove 1-1 on the right side of the front box body end cover 1 and is adjacent to an oil inlet hole 7 on the front box body 11, a gap is formed between the left end surface of the annular radial seal part 2-1 and the front box body end cover 1, and the right end of the planet carrier corner seal pressing plate 3 and the left end of the planet carrier labyrinth seal 2 are arranged on the; the V-shaped ring seal 5 is sleeved on the planet carrier angle sealing pressure plate 3; the O-shaped sealing ring 6 is sleeved on the planet carrier 4 and is positioned between the inner end of the right end of the planet carrier angle sealing pressure plate 3 and the inner end of the left end of the planet carrier angle sealing pressure plate 3. As can be seen from FIG. 2, at least one annular axial sealing part 2-2 extending leftwards from the left end of the annular radial sealing part 2-1 of the planet carrier labyrinth seal 2 is arranged on the annular radial sealing part 2-1 of the front box body end cover 1, the mounting groove 1-1 on the front box body end cover 1 is correspondingly matched with the annular radial sealing part 2-1 and the annular axial sealing part 2-2 on the planet carrier labyrinth seal 2 in shape, and the annular radial sealing part 2-1 and the annular axial sealing part 2-2 are positioned in the mounting groove 1-1 and have a small gap with the front box body end cover 1. Therefore, the lubricating oil entering from the oil inlet hole 7 does not directly enter between the front box body end cover 1 and the planet carrier labyrinth seal 2 from the outside, but enters along the small gaps among the annular radial seal part 2-1, the annular axial seal part 2-2 and the mounting groove 1-1 after being radially and axially blocked by the annular axial seal part 2-2 and the mounting groove 1-1. Therefore, when the wind power gear box runs at a low speed, only a trace of lubricating oil is adhered to the surface of the planet carrier labyrinth seal 2, even if the rotating speed is low, the trace of lubricating oil does not need to be thrown away, and the trace of lubricating oil can not slowly seep out of the gear box along the surface of the planet carrier labyrinth seal 2, so that the trace of oil seepage is avoided. In addition, lubricating oil can generate a large amount of bubbles due to the stirring of the gears when the gear box runs, the diffusion of the bubbles can cause the internal pressure of the gear box, the oil mist generated by the lubricating oil bubbles can not seep out along the tiny gap between the front box body end cover 1 and the planet carrier labyrinth seal 2 under the action of the internal pressure, oil drops can not seep out when meeting cold air, and the risk of oil seepage is avoided. Therefore, the utility model discloses a leakproofness is better.
Referring to fig. 2, the annular radial sealing part 2-1 of the planet carrier labyrinth seal 2 is preferably provided with two annular axial sealing parts 2-2 which extend leftwards from the left end of the annular radial sealing part. Thus, the lubricating oil entering from the oil inlet hole 7 does not directly enter between the front box body end cover 1 and the planet carrier labyrinth seal 2 from the outside, but enters along the small gaps among the annular radial seal part 2-1, the two annular axial seal parts 2-2 and the mounting groove 1-1 after being radially and axially blocked by the two annular axial seal parts 2-2 and the mounting groove 1-1 at intervals. Therefore, when the wind power gear box runs at a low speed, only a very small amount of lubricating oil is adhered to the surface of the planet carrier labyrinth seal 2, even if the rotating speed is low, the very small amount of lubricating oil does not need to be thrown away, the very small amount of lubricating oil does not slowly seep out of the gear box along the surface of the planet carrier labyrinth seal 2, and the leakage of the lubricating oil is better avoided. In addition, when the gear box runs, a large amount of bubbles are generated by stirring of the gears by lubricating oil, the diffusion of the bubbles causes internal pressure generated inside the gear box, oil mist generated by the lubricating oil bubbles due to the internal pressure cannot seep out along a tiny gap between the front box body end cover 1 and the planet carrier labyrinth seal 2, oil drops cannot seep out when meeting cold air, and the risk of oil seepage is avoided. This makes the utility model discloses a leakproofness is better.
Referring to fig. 2, the cross-sectional shape of the annular axial seal portion 2-2 on the annular radial seal portion 2-1 of the planet carrier labyrinth seal 2 is rectangular. This makes the structure of the annular axial seal portion 2-2 relatively simple and easy to manufacture. The cross-sectional shape of the annular axial seal 2-2 on the annular radial seal 2-1 of the planet carrier labyrinth seal 2 may also preferably be trapezoidal or saw-toothed or semicircular or elliptical or parabolic or wavy. This also makes the construction of the annular axial seal 2-2 relatively simple and easy to manufacture.
Referring to fig. 2, a first oil return groove 8 communicating the inside and the outside is preferably arranged on the mounting groove 1-1 of the front case end cover 1, and the first oil return groove 8 is located at an inner end angle of the mounting groove 1-1 and the left end of the annular axial sealing part 2-2 at the outer end of the two annular axial sealing parts 2-2. So, at the during operation, the whole department that is located planet carrier labyrinth seal 2 between front box end cover 1 and the planet carrier 4 meets cold air, directly forms oil to drip, adsorbs when planet carrier labyrinth seal 2 is whole, and oil drips just can get back to the oil tank through first oil return groove 8 to can prevent the oil mist betterly, avoid the oil mist to ooze too much, form oil and leak oil.
Referring to fig. 2, the radial cross-sectional shape of the first oil return groove 8 is preferably semicircular. This makes the structure of the first oil return groove 8 relatively simple and easy to manufacture. The radial cross-sectional shape of the first oil return groove 8 is also preferably semi-elliptical or parabolic or trapezoidal or rectangular. This also makes the first oil return groove 8 relatively simple in structure and relatively easy to manufacture.
Referring to fig. 2, a second oil return groove 9 communicating the inside and the outside is further arranged on the mounting groove 1-1 on the front box end cover 1, and the second oil return groove 9 is located at an inner end angle of the left end of the annular axial sealing part 2-2 between the mounting groove 1-1 and the two annular axial sealing parts 2-2. So, at the during operation, the whole department that lies in planet carrier labyrinth seal 2 between front box end cover 1 and the planet carrier 4 meets cold air, directly forms oil and drips, adsorbs when planet carrier labyrinth seal 2 is whole, and oil drips just can not only get back to the oil tank through first oil gallery 8, still can get back to the oil tank through second oil gallery 9 simultaneously to can prevent the oil mist better and avoid the oil mist to ooze too much, form oil and drip and the oil seepage leak.
Referring to fig. 2, the radial cross-sectional shape of the second oil return groove 9 is preferably semicircular. This makes the second oil gallery 9 relatively simple in construction and relatively easy to manufacture. The radial cross-sectional shape of the second oil return groove 9 can also be preferably semi-elliptical or parabolic or trapezoidal or rectangular. This also makes the second oil gallery 9 relatively simple in construction and relatively easy to manufacture.
Referring to fig. 2, the present invention further includes a sealing ring 10, wherein the shape and size of the sealing ring 10 corresponds to the shape and size of the mounting groove 1-1 on the front case end cover 1 and is assembled in the mounting groove 1-1, and a small gap of 0.1mm exists between one side of the sealing ring facing the annular radial sealing portion 2-1 and the annular axial sealing portion 2-2 on the planet carrier labyrinth 2 and the annular radial sealing portion 2-1 and the annular axial sealing portion 2-2. The oil leakage can be better prevented through the sealing ring 10, so that the sealing performance of the utility model is better.
The seal ring 10 is made of a metal material. This makes the seal ring 10 easier to manufacture and more corrosion resistant, with better sealing effect. This makes the seal ring 10 easier to manufacture and more corrosion resistant, with better sealing.
The seal ring 10 is preferably made of manganese steel, for example, preferably 42 manganese steel. This also makes the seal ring 10 easier to manufacture and more corrosion resistant and provides a better seal.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. An input sealing structure of a wind power gear box comprises a front box body end cover, a planet carrier labyrinth seal, a planet carrier angle sealing pressing plate, a planet carrier, a V-shaped ring seal, an O-shaped sealing ring and an oil inlet hole, wherein the right side of the front box body end cover is provided with a mounting groove; the right end of the planet carrier labyrinth seal is provided with an annular radial seal part which extends radially outwards, the whole planet carrier labyrinth seal is positioned between the front box body end cover and the planet carrier and fixedly assembled on the planet carrier, a small gap is formed between the periphery of the planet carrier labyrinth seal and the inner wall of the front box body end cover, the annular radial seal part of the planet carrier labyrinth seal is positioned in the mounting groove on the right side of the front box body end cover and is adjacent to an oil inlet hole on the front box body, a gap is formed between the left end surface of the annular radial seal part and the front box body end cover, and the right end of the planet carrier angle seal pressing plate and the left end of the planet carrier; the V-shaped ring is hermetically sleeved on the planet carrier angle sealing pressure plate; o type sealing washer suit is on the planet carrier and lie in between the inner of the right-hand member of planet carrier angle seal clamp plate and the inner of planet carrier angle seal clamp plate left end, its characterized in that: be equipped with at least one by its left end annular axial seal portion that extends left on planet carrier labyrinth's the annular radial seal portion, the corresponding cooperation of the shape of annular radial seal portion and the annular axial seal portion on mounting groove and the planet carrier labyrinth on the front box end cover, annular radial seal portion and annular axial seal portion be arranged in the mounting groove and with the front box end cover between have small clearance.
2. The wind power gearbox input seal structure of claim 1, wherein: the annular radial sealing part of the labyrinth seal of the planet carrier is provided with two annular axial sealing parts which extend leftwards from the left end of the annular radial sealing part.
3. The wind turbine gearbox input seal structure of claim 2, wherein: the section shape of the annular axial sealing part on the annular radial sealing part of the labyrinth seal of the planet carrier is rectangular or trapezoidal or zigzag or semicircular or elliptic or parabolic or wavy.
4. The wind turbine gearbox input seal structure of claim 3, wherein: the mounting groove on the front box end cover is provided with a first oil return groove communicated with the inside and the outside, and the first oil return groove is positioned at the inner end angle of the left end of the annular axial sealing part at the outer end of the two annular axial sealing parts on the mounting groove.
5. The wind turbine gearbox input seal structure of claim 4, wherein: the radial cross section of the first oil return groove is semicircular or semi-elliptical or parabolic or trapezoidal or rectangular.
6. The wind turbine gearbox input seal structure of claim 5, wherein: and a second oil return groove communicated with the inside and the outside is also formed in the mounting groove in the front box body end cover, and the second oil return groove is positioned at the inner end angle of the left end of the annular axial sealing part between the mounting groove and the two annular axial sealing parts.
7. The wind turbine gearbox input seal structure of claim 6, wherein: the radial cross section of the second oil return groove is semicircular, semi-elliptic, parabolic, trapezoidal or rectangular.
8. The wind turbine gearbox input seal structure of claim 7, wherein: the sealing ring is matched with the mounting groove in the front box body end cover in shape and size and is assembled in the mounting groove, and a small gap of 0.1mm exists between one side of the sealing ring, which faces the annular radial sealing part and the annular axial sealing part on the planet carrier labyrinth seal, and the annular radial sealing part and the annular axial sealing part.
9. The wind turbine gearbox input seal structure of claim 8, wherein: the seal ring is made of a metal material.
10. The wind turbine gearbox input seal structure of claim 9, wherein: the seal ring is made of manganese steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920965254.5U CN210371945U (en) | 2019-06-25 | 2019-06-25 | Wind-powered electricity generation gear box input seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920965254.5U CN210371945U (en) | 2019-06-25 | 2019-06-25 | Wind-powered electricity generation gear box input seal structure |
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| CN210371945U true CN210371945U (en) | 2020-04-21 |
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| CN201920965254.5U Active CN210371945U (en) | 2019-06-25 | 2019-06-25 | Wind-powered electricity generation gear box input seal structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159738A (en) * | 2019-06-25 | 2019-08-23 | 重庆望江工业有限公司 | A kind of wind turbine gearbox input sealing structure |
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- 2019-06-25 CN CN201920965254.5U patent/CN210371945U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159738A (en) * | 2019-06-25 | 2019-08-23 | 重庆望江工业有限公司 | A kind of wind turbine gearbox input sealing structure |
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