CN113757346A

CN113757346A - Aerogenerator gear box with heat radiation structure

Info

Publication number: CN113757346A
Application number: CN202110931445.1A
Authority: CN
Inventors: 梁小倩
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2021-12-07

Abstract

The invention discloses a wind driven generator gearbox with a heat dissipation structure. Relates to the technical field of wind power generation equipment. The driving shaft drives the driven shaft to rotate through a transmission gear set arranged in the cavity of the shell; one end of the driven shaft penetrates through the shell and extends to the outside of the shell, an air inlet portion is fixed on the driven shaft located outside the shell, a heat exchange portion is installed on the outer side of the air inlet portion, and the heat exchange portion is communicated with the cavity of the shell through a liquid inlet channel and a liquid outlet channel. The driven shaft is driven to rotate through the transmission gear set, the air inlet portion rotates along with the driven shaft in the rotating process of the driven shaft, air enters the air inlet portion along the inclined plate, and external cold air penetrates through the inside of the heat exchanging portion to complete cooling of oil.

Description

Aerogenerator gear box with heat radiation structure

Technical Field

The invention belongs to the technical field of wind power generation equipment, and particularly relates to a wind driven generator gear box with a heat dissipation structure.

Background

The wind driven generator is an electric device which converts wind energy into mechanical work, the mechanical work drives a rotor to rotate, and alternating current is finally output. Its main function is that the power that produces the wind wheel under wind-force effect transmits for the generator and makes it obtain corresponding rotational speed, but, current aerogenerator gear box is after long-time work, and the gear of gear box crescent rotates and produces a large amount of heat energy to influence the working property of gear box, long-time high temperature leads to gear box inner structure to damage the life who influences the gear box, consequently need dispel the heat fast in order to improve the working property and the life of gear box to the gear box. The existing wind driven generator gearbox heat dissipation assembly comprises an oil liquid pump, a heat dissipation fan and the like, a large amount of heat can be generated in the working process, and the heat dissipation difficulty is improved.

Disclosure of Invention

The invention aims to provide a wind driven generator gear box with a heat dissipation structure, wherein a driven shaft is driven to rotate through a transmission gear set, an air inlet part rotates along with the driven shaft in the rotating process of the driven shaft, air enters the air inlet part along an inclined plate, and external cold air passes through the inside of a heat exchange part to cool oil, so that the related problems in the background art are solved.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a wind driven generator gear box with a heat dissipation structure, which comprises a shell and a driving shaft, wherein the shell is provided with a cavity, one end of the driving shaft extends into the cavity of the shell, and the driving shaft drives a driven shaft to rotate through a transmission gear set arranged in the cavity of the shell; one end of the driven shaft penetrates through the shell to extend to the outside of the shell, an air inlet portion is fixed on the driven shaft located outside the shell, a heat exchange portion is installed on the outer side of the air inlet portion, and the heat exchange portion is communicated with the cavity of the shell through a liquid inlet channel and a liquid outlet channel.

Furthermore, the shell is of an L-shaped structure, and the air inlet part and the heat exchange part are arranged in a right-angle groove formed by the shell; the bottom surface of the shell is also uniformly distributed with a plurality of fins.

Further, the air inlet portion comprises an air guide pipe, a disc body, inclined plates and spiral blades, the air guide pipe is sleeved on the outer side of the driven shaft, the spiral blades are arranged in a gap formed between the air guide pipe and the driven shaft, the disc body is compounded at the end portion, close to the shell, of the air guide pipe, a gap is formed between the disc body and the end face of the shell, and the inclined plates which are annularly distributed on the disc body are located in the gap.

Further, the heat exchange part comprises an inner pipe body, an outer pipe body, a liquid inlet channel and a liquid outlet channel, the outer side of the inner pipe body is sleeved with the outer pipe body which is distributed coaxially, a liquid inlet cavity is formed between the inner pipe body and the outer pipe body, ports formed at two ends of the inner pipe body and two ends of the outer pipe body are connected in a sealing mode through a cover body, and the cover body is sleeved on the outer side of the air guide pipe; the inner pipe body is sleeved on the outer side of the air guide pipe and forms a heat exchange cavity, wherein the inner pipe body and the air guide pipe are distributed coaxially, a first sliding groove and a second sliding groove which are communicated with the heat exchange cavity are formed in the inner pipe body, sliding plates are arranged in the first sliding groove and the second sliding groove in a sliding mode, an arc-shaped plate is arranged on the outer side of the inner pipe body, and one end portion of the arc-shaped plate is connected with one sliding plate; a plurality of convex edges are uniformly distributed on the circumferential side surface of the air guide pipe positioned at the inner side of the inner pipe body; the feed liquor cavity is communicated with the inside of the shell through a feed liquor channel, a valve body is installed in the feed liquor channel, and the heat exchange cavity is communicated with the inside of the shell through a feed liquor channel.

Furthermore, a through groove penetrates through the sliding plate, the inlet end of the through groove is communicated with the liquid inlet cavity, and the outlet end of the through groove is communicated with the heat exchange cavity; and a spring is arranged on the upper side of the sliding plate, and the other end of the spring is fixed on a baffle plate arranged at the top end of the liquid inlet cavity.

Further, the cross section of the inner pipe body is oval, the short axis of the inner pipe body is horizontally distributed, and the long axis of the inner pipe body is vertically distributed.

The invention has the following beneficial effects:

1. the fan blades of the wind driven generator are arranged on the driving shaft, the fan blades drive the driving shaft to rotate under the blowing of wind power, the driven shaft is driven to rotate through the transmission gear set, the air inlet portion rotates along with the driven shaft in the rotating process of the driven shaft, air enters the air inlet portion along the inclined plate, and external cold air penetrates through the inside of the heat exchange portion to complete the cooling of oil.

2. According to the invention, in the rotating process, the gathered air enters the air inlet part along the inclined plate, and the helical blades are arranged in the gap formed by the air guide pipe and the driven shaft, so that the air pumping effect in the gap formed by the air guide pipe and the driven shaft is improved, the air discharging effect is improved, the flow quantity of the air is increased, and the heat dissipation of the surface of the heat exchanging part is further improved.

3. The cross section of the inner pipe body is oval, the distance between the two sliding plates which are horizontally distributed and the side surface of the air guide pipe is small, in the rotating process of the air guide pipe, a convex edge arranged on the side surface of the air guide pipe pushes one sliding plate to rotate downwards, the other sliding plate rotates upwards, the downward rotating sliding plate completes compression on a formed liquid inlet cavity, oil enters the heat exchange cavity through the sliding plate and is subjected to heat exchange with the low-temperature air guide pipe; the sliding plates moving upwards finish increasing the formed liquid inlet cavity to form a negative pressure swordsman entering the liquid inlet cavity through the valve body, and when the sliding plates move to the long shaft, the sliding plates are not reset by the thrust of the convex ribs, and the two sliding plates have opposite movement modes.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic overall front view of the present invention;

FIG. 3 is a schematic cross-sectional view of the connection between the air inlet and the heat exchange unit;

FIG. 4 is a schematic view of an air inlet installation structure of the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1-shell, 11-fin, 2-driving shaft, 3-transmission gear set, 4-driven shaft, 5-air inlet part, 51-air guide pipe, 52-convex edge, 53-disk body, 54-inclined plate, 55-helical blade, 6-heat exchange part, 61-inner tube body, 611-first chute, 612-second chute, 613-arc plate, 62-outer tube body, 63-liquid inlet channel, 631-valve body, 64-liquid outlet channel and 65-sliding plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

Referring to fig. 1-4, the invention relates to a wind driven generator gearbox with a heat dissipation structure, which comprises a housing 1 and a driving shaft 2, wherein the housing 1 is provided with a cavity, one end of the driving shaft 2 extends into the cavity of the housing 1, and the driving shaft 2 drives a driven shaft 4 to rotate through a transmission gear set 3 arranged in the cavity of the housing 1; one end part of the driven shaft 4 penetrates through the shell 1 and extends to the outside of the shell 1, an air inlet part 5 is fixed on the driven shaft 4 positioned outside the shell 1, a heat exchange part 6 is installed on the outer side of the air inlet part 5, and the heat exchange part 6 is communicated with the cavity of the shell 1 through a liquid inlet channel 63 and a liquid outlet channel 64.

The driving shaft 2 is provided with a fan blade of a wind driven generator, the fan blade drives the driving shaft 2 to rotate under the blowing of wind power, the driven shaft 4 is driven to rotate through the transmission gear set 3, the air inlet portion 5 rotates along with the driven shaft 4, air enters the air inlet portion 5 along the inclined plate 54 arranged, and external cold air passes through the inside of the heat exchanging portion 6 to cool oil and improve the lubricating effect.

The shell 1 is of an L-shaped structure, and the air inlet part 5 and the heat exchange part 6 are arranged in a right-angle groove formed in the shell 1; the bottom surface of the shell 1 is also evenly distributed with a plurality of fins 11.

The air inlet portion 5 and the heat exchange portion 6 are installed in the right-angle groove formed in the shell 1, the size of the device is effectively reduced, meanwhile, a plurality of fins 11 are evenly distributed on the bottom surface of the shell 1, and the heat dissipation effect is improved when air outside the shell 1 flows through the surface of the shell 1.

The air inlet part 5 comprises an air guide pipe 51, a disc body 53, inclined plates 54 and spiral blades 55, the air guide pipe 51 is sleeved on the outer side of the driven shaft 4, the spiral blades 55 are arranged in a gap formed between the air guide pipe 51 and the driven shaft 4, the disc body 53 is compounded at the end part of the air guide pipe 51 close to the shell 1, a gap is formed between the disc body 53 and the end surface of the shell 1, and the inclined plates 54 which are annularly distributed on the disc body 53 are positioned in the gap.

The air gathered in the rotating process enters the air inlet part 5 along the inclined plate 54, and meanwhile, the spiral blades 55 are arranged in the gap formed by the air guide pipe 51 and the driven shaft 4, so that the air pumping-out effect in the gap formed by the air guide pipe 51 and the driven shaft 4 is improved, the air discharging effect is improved, the air flow quantity is increased, and the heat dissipation is further improved on the surface of the heat exchanging part 6.

The heat exchanging part 6 comprises an inner pipe body 61, an outer pipe body 62, a liquid inlet channel 63 and a liquid outlet channel 64, wherein the outer pipe body 62 which is coaxially distributed is sleeved on the outer side of the inner pipe body 61, a liquid inlet cavity is formed between the inner pipe body 61 and the outer pipe body 62, ports formed at two ends of the inner pipe body 61 and the outer pipe body 62 are hermetically connected through a cover body, and the cover body is sleeved on the outer side of the air guide pipe 51; the inner pipe body 61 is sleeved on the outer side of the air guide pipe 51 and forms a heat exchange cavity, wherein the inner pipe body 61 and the air guide pipe 51 are distributed coaxially, a first sliding groove 611 and a second sliding groove 612 which are communicated with the heat exchange cavity are formed in the inner pipe body 61, sliding plates 65 are slidably mounted in the first sliding groove 611 and the second sliding groove 612, an arc-shaped plate 613 is arranged on the outer side of the inner pipe body 61, and one end of the arc-shaped plate 613 is connected with one sliding plate 65;

a plurality of convex ribs 52 are uniformly distributed on the circumferential side surface of the air guide pipe 51 positioned at the inner side of the inner pipe body 61; the liquid inlet cavity is communicated with the inside of the shell 1 through a liquid inlet channel 63, a valve body 631 is arranged in the liquid inlet channel 63, and the heat exchange cavity and the inside of the shell 1 are communicated through a liquid outlet channel 64.

A through groove penetrates through the sliding plate 65, the inlet end of the through groove is communicated with the liquid inlet cavity, and the outlet end of the through groove is communicated with the heat exchange cavity; the upper side of the sliding plate 65 is provided with a spring, and the other end of the spring is fixed on a baffle plate arranged at the top end of the liquid inlet cavity.

The cross section of the inner tube body 61 is oval, the short axis of the inner tube body 61 is horizontally distributed, and the long axis of the inner tube body 61 is vertically distributed.

Because the cross section of the inner pipe body 61 is oval, the distance between the two sliding plates 65 which are horizontally distributed and the side surface of the air guide pipe 51 is small, in the rotating process of the air guide pipe 51, the convex edge 52 arranged on the side surface of the air guide pipe 51 pushes one sliding plate 65 to rotate downwards, the other sliding plate 65 rotates upwards, the sliding plate 65 rotating downwards completes compression on the formed liquid inlet cavity, and oil enters the heat exchange cavity through the sliding plate 65 and is subjected to heat exchange interaction with the low-temperature air guide pipe 51; the sliding plate 65 moving upwards completes the enlargement of the formed liquid inlet cavity, so that the negative pressure swordmen enter the liquid inlet cavity through the valve body 631, and when the sliding plate 65 moves to the long axis position, the sliding plate is not reset by the thrust of the convex ribs 52, and the moving modes of the two sliding plates 65 are opposite.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a aerogenerator gear box with heat radiation structure, includes casing (1) and driving shaft (2), its characterized in that:

the driving shaft (2) drives the driven shaft (4) to rotate through a transmission gear set (3) arranged in the cavity of the shell (1);

one end of the driven shaft (4) penetrates through the shell (1) and extends to the outside of the shell (1), an air inlet portion (5) is fixed on the driven shaft (4) located outside the shell (1), a heat exchanging portion (6) is installed on the outer side of the air inlet portion (5), and the heat exchanging portion (6) is communicated with the cavity of the shell (1) through a liquid inlet channel (63) and a liquid outlet channel (64).

2. The wind driven generator gearbox with the heat dissipation structure as recited in claim 1, wherein the housing (1) is of an L-shaped structure, and the air inlet part (5) and the heat exchange part (6) are arranged in a right-angle groove formed by the housing (1);

the bottom surface of the shell (1) is evenly distributed with a plurality of fins (11).

3. The wind driven generator gearbox with the heat dissipation structure as recited in claim 1, wherein the air inlet portion (5) comprises an air guide pipe (51), a disc body (53), inclined plates (54) and helical blades (55), the air guide pipe (51) is sleeved on the outer side of the driven shaft (4), the helical blades (55) are arranged in a gap formed between the air guide pipe (51) and the driven shaft (4), the disc body (53) is compounded at the end portion, close to the casing (1), of the air guide pipe (51), a gap is formed between the disc body (53) and the end face of the casing (1), and the plurality of inclined plates (54) which are annularly distributed on the disc body (53) are located in the gap.

4. The wind driven generator gearbox with the heat dissipation structure as recited in claim 1, wherein the heat exchange portion (6) comprises an inner pipe (61), an outer pipe (62), a liquid inlet channel (63) and a liquid outlet channel (64), the outer pipe (62) distributed coaxially is sleeved on the outer side of the inner pipe (61), a liquid inlet cavity is formed between the inner pipe (61) and the outer pipe (62), ports formed at two ends of the inner pipe (61) and the outer pipe (62) are connected in a sealing manner through a cover body, and the cover body is sleeved on the outer side of the air guide pipe (51);

the inner pipe body (61) is sleeved on the outer side of the air guide pipe (51) to form a heat exchange cavity, wherein the inner pipe body (61) and the air guide pipe (51) are distributed coaxially, a first sliding groove (611) and a second sliding groove (612) communicated with the heat exchange cavity are formed in the inner pipe body (61), sliding plates (65) are installed in the first sliding groove (611) and the second sliding groove (612) in a sliding mode, an arc-shaped plate (613) is arranged on the outer side of the inner pipe body (61), and one end portion of the arc-shaped plate (613) is connected with one sliding plate (65);

a plurality of convex ribs (52) are uniformly distributed on the circumferential side surface of the air guide pipe (51) positioned at the inner side of the inner pipe body (61);

the liquid inlet cavity is communicated with the inside of the shell (1) through a liquid inlet channel (63), a valve body (631) is installed in the liquid inlet channel (63), and the liquid outlet channel (64) is arranged between the heat exchange cavity and the inside of the shell (1).

5. The wind turbine gearbox with the heat dissipation structure as recited in claim 4, wherein a through groove penetrates through the sliding plate (65), the inlet end of the through groove is communicated with the liquid inlet cavity, and the outlet end of the through groove is communicated with the heat exchange cavity;

and a spring is arranged on the upper side of the sliding plate (65), and the other end of the spring is fixed on a baffle plate arranged at the top end of the liquid inlet cavity.

6. The wind turbine gearbox with the heat dissipation structure as recited in claim 4, wherein the cross section of the inner pipe body (61) is elliptical, the short axis of the inner pipe body (61) is horizontally distributed, and the long axis of the inner pipe body (61) is vertically distributed.