CN210770165U - Main gearbox of wind driven generator - Google Patents
Main gearbox of wind driven generator Download PDFInfo
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- CN210770165U CN210770165U CN201921789762.9U CN201921789762U CN210770165U CN 210770165 U CN210770165 U CN 210770165U CN 201921789762 U CN201921789762 U CN 201921789762U CN 210770165 U CN210770165 U CN 210770165U
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- main gearbox
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- oil
- cooling system
- lubricating
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Abstract
The utility model relates to a wind power generation technical field discloses a aerogenerator master gearbox, including master gearbox box and lubricated cooling system. An oil inlet and a first oil return opening are formed in the main gearbox body. The lubricating and cooling system is independently arranged outside the main gearbox body and is communicated with an oil inlet of the main gearbox body through a hose. The lubricating and cooling system comprises an oil tank, a cooling assembly and a plurality of branches. And a second oil return port is arranged on the oil tank and is communicated with the first oil return port through a hose. The outlet of the cooling assembly is connected with the oil inlet of the main gearbox body in series. The branch circuits are connected in parallel and comprise temperature control valves, the temperature control valves are connected with the oil tank in series, and the branch circuits are selectively connected with an inlet of the cooling assembly in series or directly connected with an oil inlet of the main gearbox body in series through the temperature control valves. The main gearbox of the wind driven generator can avoid vibration from being transmitted to the lubricating and cooling system, prolong the service life of the lubricating and cooling system and reduce the fault risk.
Description
Technical Field
The utility model relates to a wind power generation technical field especially relates to a aerogenerator master gear box.
Background
The lubricating and cooling system of the main gearbox of the megawatt wind turbine is usually directly arranged on the main gearbox body. However, the arrangement inevitably causes the vibration of the main gearbox to be transmitted to the lubricating and cooling system, so that the service life of each component in the lubricating and cooling system is reduced, and the fault risk of the main gearbox of the wind driven generator is increased.
Therefore, a new main gearbox of a wind turbine is needed to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a wind-driven generator master gearbox, it compares with prior art, can avoid the vibration transmission of master gearbox box to lubricated cooling system, prolongs the life of each part among the lubricated cooling system, reduces the trouble risk of wind-driven generator master gearbox.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a main gearbox for a wind turbine, comprising:
the main gearbox body is provided with an oil inlet and a first oil return port;
the lubricating and cooling system is independently arranged outside the main gearbox box body, the lubricating and cooling system is communicated with an oil inlet of the main gearbox box body through a hose, and the lubricating and cooling system comprises:
the oil tank is provided with a second oil return port, and the second oil return port is communicated with the first oil return port through a hose;
the outlet of the cooling assembly is connected with the oil inlet of the main gearbox body in series;
the branch circuits comprise temperature control valves, the temperature control valves are connected with the oil tank in series, and the branch circuits are selectively connected with the inlet of the cooling assembly in series or directly connected with the oil inlet of the main gearbox body in series through the temperature control valves.
Further, the main gearbox body is arranged at a position higher than the oil tank, so that lubricating oil flows back to the oil tank from the main gearbox body through potential energy.
Further, the cooling assembly comprises a plurality of heat exchangers, and the plurality of heat exchangers are arranged in parallel.
Further, the branch circuit also comprises a filtering assembly, and the filtering assembly is connected in series between the temperature control valve and the oil tank.
Furthermore, the branch circuit also comprises a motor pump set which is connected in series between the filtering assembly and the oil tank.
Further, the branch circuit further comprises a one-way valve, and the one-way valve is connected in series between the motor pump set and the filtering assembly, and/or the one-way valve is connected in series between the filtering assembly and the temperature control valve.
Further, the filtering assembly comprises a first-stage filter, a second-stage filter and a bypass one-way valve, wherein the first-stage filter and the second-stage filter are connected in series, and the bypass one-way valve is connected with the first-stage filter in parallel.
Furthermore, the filtering assembly further comprises a differential pressure signal generator, and the differential pressure signal generator is connected with the first-stage filter and the second-stage filter which are connected in series in parallel.
Further, the lubricating and cooling system further comprises a monitoring assembly, wherein the monitoring assembly comprises a moisture sensor, an acid value sensor, a viscosity sensor, an abrasive particle sensor and/or a cleanliness sensor so as to detect the moisture, the acid value, the viscosity, the abrasive particles and/or the cleanliness of the lubricating oil in the lubricating and cooling system.
Furthermore, the lubricating and cooling system further comprises a first pressure sensor and a one-way overflow valve which are connected in series, the first pressure sensor is connected in series with an outlet of the motor pump set, and the one-way overflow valve is connected in series with the oil tank.
The utility model has the advantages that:
the utility model provides a main gearbox of wind driven generator, through independently setting up the lubrication and cooling system outside the main gearbox box, and adopt the oil inlet of hose intercommunication lubrication and cooling system and main gearbox box, adopt the first oil return mouth of hose intercommunication main gearbox box and the second oil return mouth of oil tank in the lubrication and cooling system simultaneously, thereby can avoid the vibration of main gearbox box to transmit to the lubrication and cooling system, the life of each part in the lubrication and cooling system has been prolonged, the trouble risk of wind driven generator main gearbox has been reduced, the independent lubrication and cooling system still is convenient for maintain and change the part simultaneously, maintainability is improved; in addition, the temperature control valve is arranged on each branch, the flow direction of lubricating oil in each branch can be independently controlled, if the temperature of the lubricating oil in each branch is greater than a preset value, the temperature control valve is connected with an inlet of the cooling assembly in series, the lubricating oil in each branch flows into the main gearbox body after being cooled by the cooling assembly, and if the temperature of the lubricating oil in each branch is less than or equal to the preset value, the temperature control valve is directly connected with an oil inlet of the main gearbox body in series, the lubricating oil in each branch directly flows into the main gearbox body, so that the lubricating oil in each branch can enter the main gearbox body at a better temperature, the cooling effect is ensured, and the working load of the cooling assembly is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and 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 the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic diagram of a main gearbox of a wind turbine according to an embodiment of the present invention.
In the figure:
1-main gearbox body;
2-an oil tank; 21-a heater; 22-a temperature measuring element; 23-a liquid level meter; 24-a liquid level switch; 25-an air filter; 26-oil drain ball valve;
3-a cooling assembly; 31-a heat exchanger;
4-a filtration assembly; 41-first stage filter; 42-a second stage filter; 43-bypass check valve; 44-differential pressure transmitter;
5-a temperature control valve;
6-motor pump group;
7-a one-way valve;
8-a monitoring assembly;
9-a first pressure sensor;
10-one-way overflow valve;
11-a second pressure sensor;
12-a pressure gauge assembly;
13-pressure tap.
Detailed Description
In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only or to distinguish between different structures or components and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment provides a main gearbox of a wind driven generator, which comprises a main gearbox body 1 and a lubricating and cooling system, wherein the lubricating and cooling system is used for lubricating and cooling the main gearbox body 1. Specifically, as shown in fig. 1, an oil inlet and a first oil return port are provided on the main gearbox housing 1. The lubricating and cooling system is independently arranged outside the main gearbox body 1 and is communicated with an oil inlet of the main gearbox body 1 through a hose. The lubricating and cooling system comprises an oil tank 2, a cooling assembly 3 and a plurality of branches. And a second oil return opening is formed in the oil tank 2 and is communicated with the first oil return opening through a hose. The outlet of the cooling assembly 3 is connected with the oil inlet of the main gearbox body 1 in series. The plurality of branches are arranged in parallel, each branch comprises a temperature control valve 5, the temperature control valves 5 are connected with the oil tank 2 in series, and the branches can be selectively connected with an inlet of the cooling assembly 3 in series or directly connected with an oil inlet of the main gear box body 1 in series through the temperature control valves 5. Optionally, the hose is a metal hose or a hose.
According to the main gearbox of the wind driven generator provided by the embodiment, the lubricating and cooling system is independently arranged outside the main gearbox body 1, the hose is adopted to communicate the lubricating and cooling system with the oil inlet of the main gearbox body 1, and the hose is simultaneously adopted to communicate the first oil return port of the main gearbox body 1 and the second oil return port of the oil tank 2 in the lubricating and cooling system, so that the vibration of the main gearbox body 1 can be prevented from being transmitted to the lubricating and cooling system, the service life of each component in the lubricating and cooling system is prolonged, the fault risk of the main gearbox of the wind driven generator is reduced, meanwhile, the independent lubricating and cooling system is convenient to maintain and replace the components, and the maintainability is improved; in addition, the temperature control valve 5 is arranged on each branch, the flow direction of lubricating oil in each branch can be independently controlled, if the temperature of the lubricating oil in each branch is greater than a preset value, the temperature control valve 5 is connected with an inlet of the cooling assembly 3 in series, the lubricating oil in each branch flows into the main gearbox body 1 after being cooled by the cooling assembly 3, and if the temperature of the lubricating oil in each branch is less than or equal to the preset value, the temperature control valve 5 is directly connected with an oil inlet of the main gearbox body 1 in series, the lubricating oil in each branch directly flows into the main gearbox body 1, so that the lubricating oil in each branch can enter the main gearbox body 1 at a better temperature, the cooling effect is ensured, and the reduction of the working load of the cooling assembly 3 is facilitated.
Preferably, the main gearbox housing 1 is arranged at a higher level than the oil tank 2, so that the lubricating oil flows back from the main gearbox housing 1 to the oil tank 2 by means of potential energy. By providing a height difference between the main gearbox housing 1 and the oil tank 2, potential energy can be used to cause the lubricating oil to flow directly from the main gearbox housing 1 back to the oil tank 2. In addition, the oil tank 2 independent of the main gear box body 1 is arranged, so that the main gear box body 1 can not be used as an oil storage tank any more, the oil storage capacity is not limited by the space of the main gear box body 1 any more, lubricating oil can be added, and the requirement for development of the large megawatt half-direct-drive wind driven generator is met.
Preferably, a heater 21 and a temperature measuring element 22 are arranged in the oil tank 2, the heater 21 is used for heating the lubricating oil, and the temperature measuring element 22 is used for detecting the temperature of the lubricating oil. When the temperature of the lubricating oil is lower, the viscosity of the lubricating oil is very high, so that the lubricating and cooling system cannot work normally, the heater 21 can be started to heat the lubricating oil at the moment, when the temperature of the lubricating oil detected by the temperature measuring element 22 reaches the preset temperature, the heater 21 stops heating, and the lubricating and cooling system can be started to lubricate and cool.
Preferably, the oil tank 2 is provided with a liquid level meter 23 and a liquid level switch 24, the liquid level meter 23 is used for detecting the liquid level in the oil tank 2, when the liquid level in the oil tank 2 is higher than or equal to a preset liquid level, the liquid level switch 24 is closed, and when the liquid level in the oil tank 2 is lower than the preset liquid level, the liquid level switch 24 is opened.
Optionally, an air cleaner 25 is further provided on the oil tank 2. The air cleaner 25 can filter air to prevent impurities in the air from entering the oil tank 2.
Optionally, a fuel drain ball valve 26 is further provided on the fuel tank 2. The oil in the oil tank 2 can be discharged through the oil drain ball valve 26.
Optionally, in the present embodiment, the cooling assembly 3 includes a plurality of heat exchangers 31, and the plurality of heat exchangers 31 are arranged in parallel. Of course, in other embodiments, the number of the heat exchangers 31 may be adjusted according to the power of the main gearbox of the wind turbine, and the cooling assembly 3 may also include only one heat exchanger 31. Optionally, the heat exchanger 31 is an oil-water heat exchanger or an oil-air heat exchanger. Specifically, in the present embodiment, the cooling assembly 3 is mounted on the oil tank 2.
Preferably, the branch further comprises a filtering assembly 4, the filtering assembly 4 being connected in series between the thermostatic valve 5 and the tank 2. The filtering assembly 4 can filter the lubricating oil to ensure the quality of the lubricating oil. Specifically, in the present embodiment, the filter assembly 4 is mounted on the fuel tank 2. Specifically, in the present embodiment, the thermo-valve 5 is mounted on the oil tank 2.
Preferably, the branch circuit further comprises a motor-pump set 6, and the motor-pump set 6 is connected in series between the filter assembly 4 and the oil tank 2. The lubricating oil is smoothly and stably flowed in the lubricating and cooling system by the motor-pump unit 6. Specifically, in the present embodiment, the motor-pump unit 6 is mounted on the oil tank 2. Optionally, the motor-pump unit 6 comprises a motor, a coupling, a bell jar and a gear pump.
Preferably, the branch further comprises a one-way valve 7, the one-way valve 7 being connected in series between the motor-pump unit 6 and the filter assembly 4, and/or the one-way valve 7 being connected in series between the filter assembly 4 and the thermo valve 5. In the embodiment, the one-way valves 7 are connected in series between the motor-pump set 6 and the filtering assembly 4 and between the filtering assembly 4 and the temperature control valve 5. When parts or pipelines before the filtering assembly 4 are overhauled, the one-way valve 7 can prevent the filtering assembly 4 and lubricating oil behind the filtering assembly from flowing back, so that the overhauling is convenient, and the overhauling cost is reduced. Specifically, in the present embodiment, the check valve 7 is mounted on the fuel tank 2.
Preferably, the filtering assembly 4 comprises a first filter 41, a second filter 42 and a bypass one-way valve 43, the first filter 41 and the second filter 42 being connected in series, the bypass one-way valve 43 being connected in parallel with the first filter 41. Specifically, in the present embodiment, the first stage filter 41 is a fine filter, and the second stage filter 42 is a coarse filter. When the first filter 41 is clogged, the pressure difference between the inlet and outlet thereof reaches the opening pressure value set by the bypass check valve 43, and the lubricating oil is filtered by the second filter 42.
Preferably, the filtration assembly 4 further comprises a differential pressure signal transmitter 44, the differential pressure signal transmitter 44 being connected in parallel with the first and second filters 41, 42 after being connected in series. When the first filter 41 and/or the second filter 42 is blocked, the pressure difference between the inlet of the first filter 41 and the outlet of the second filter 42 will increase, and when the pressure difference increases to the set value of the pressure difference signal transmitter 44, the pressure difference signal transmitter 44 will send out an alarm signal to prompt the relevant personnel to clean or replace the filter element of the first filter 41 and/or the second filter 42 in time to ensure the normal operation of the lubrication cooling system.
Preferably, the lubrication cooling system further comprises a monitoring assembly 8, and the monitoring assembly 8 comprises a moisture sensor, an acid value sensor, a viscosity sensor, an abrasive grain sensor and/or a cleanliness sensor to detect moisture, an acid value, viscosity, abrasive grains and/or cleanliness of the lubricating oil in the lubrication cooling system. In the embodiment, the monitoring assembly 8 comprises a moisture sensor, an acid value sensor, a viscosity sensor, a wear particle sensor and a cleanliness sensor so as to perform extensive data acquisition on the lubricating oil in the lubricating and cooling system, and monitor the state of the lubricating oil and the running state of the main gearbox of the wind driven generator in real time, thereby being beneficial to fault pre-judgment and maintenance. Specifically, in the present embodiment, the monitor assembly 8 is mounted on the fuel tank 2. Of course, a certain installation space can be reserved so as to add related sensors according to the needs. In addition, in this embodiment, the cooling assembly 3, the filtering assembly 4, the motor pump unit 6 and the monitoring assembly 8 are all in a modular design, so that the material reduction is facilitated, and the use cost is reduced.
Preferably, the lubricating and cooling system further comprises a first pressure sensor 9 and a one-way overflow valve 10 which are connected in series, wherein the first pressure sensor 9 is connected in series with an outlet of the motor-pump set 6, and the one-way overflow valve 10 is connected in series with the oil tank 2. The first pressure sensor 9 is used for detecting the pressure at the outlet of the motor-pump set 6, and when the pressure exceeds a preset value, the one-way overflow valve 10 is opened to enable part of lubricating oil to flow back to the oil tank 2, so that the pressure in the branch is reduced, and accidents caused by overhigh pressure are prevented. Further, the lubrication and cooling system further comprises a pressure tap 13, and the pressure tap 13 is connected with the first pressure sensor 9 in series. Specifically, in the present embodiment, the relief and check valve 10 is mounted on the tank 2.
Preferably, the lubrication cooling system further comprises a second pressure sensor 11 and a pressure gauge assembly 12, and the second pressure sensor 11 and the pressure gauge assembly 12 are arranged at an oil inlet of the main gearbox housing 1. The pressure at the oil inlet of the main gearbox body 1 can be monitored through the matching of the second pressure sensor 11 and the pressure gauge assembly 12, and accidents are avoided.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A main gearbox for a wind turbine, comprising:
the main gearbox body is provided with an oil inlet and a first oil return port;
the lubricating and cooling system is independently arranged outside the main gearbox box body, the lubricating and cooling system is communicated with an oil inlet of the main gearbox box body through a hose, and the lubricating and cooling system comprises:
the oil tank is provided with a second oil return port, and the second oil return port is communicated with the first oil return port through a hose;
the outlet of the cooling assembly is connected with the oil inlet of the main gearbox body in series;
the branch circuits comprise temperature control valves, the temperature control valves are connected with the oil tank in series, and the branch circuits are selectively connected with the inlet of the cooling assembly in series or directly connected with the oil inlet of the main gearbox body in series through the temperature control valves.
2. The main gearbox of wind turbine generator as claimed in claim 1, wherein the main gearbox housing is disposed at a higher position than the oil tank such that the lubricant oil flows from the main gearbox housing back to the oil tank by potential energy.
3. The wind turbine main gearbox of claim 1, wherein the cooling assembly comprises a plurality of heat exchangers, the plurality of heat exchangers being arranged in parallel.
4. The main gearbox of wind turbine generator as claimed in claim 1, wherein said bypass further comprises a filter assembly, said filter assembly being connected in series between said thermo valve and said oil tank.
5. The main gearbox of wind turbine generator according to claim 4, characterized in that said branch further comprises a motor-pump group, said motor-pump group being connected in series between said filtering assembly and said oil tank.
6. The main gearbox of wind driven generator according to claim 5, characterized in that said branch further comprises a one-way valve, said one-way valve being connected in series between said motor-pump set and said filtering assembly, and/or said one-way valve being connected in series between said filtering assembly and said thermo valve.
7. The main gearbox of wind turbine generator as claimed in claim 4, wherein said filtering assembly comprises a first filter, a second filter and a bypass check valve, said first filter and said second filter being connected in series, said bypass check valve being connected in parallel with said first filter.
8. The wind turbine main gearbox of claim 7, wherein the filter assembly further comprises a differential pressure signal transmitter connected in parallel with the first and second filters in series.
9. The main gearbox of wind turbine generator according to claim 1, wherein the lubrication and cooling system further comprises a monitoring assembly comprising a moisture sensor, an acid value sensor, a viscosity sensor, an abrasive particle sensor and/or a cleanliness sensor for detecting moisture, acid value, viscosity, abrasive particles and/or cleanliness of the lubricating oil in the lubrication and cooling system.
10. The main gearbox of wind driven generator according to claim 5, characterized in that the lubricating and cooling system further comprises a first pressure sensor and a one-way overflow valve connected in series, wherein the first pressure sensor is connected in series with the outlet of the motor-pump set, and the one-way overflow valve is connected in series with the oil tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921789762.9U CN210770165U (en) | 2019-10-23 | 2019-10-23 | Main gearbox of wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921789762.9U CN210770165U (en) | 2019-10-23 | 2019-10-23 | Main gearbox of wind driven generator |
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| Publication Number | Publication Date |
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| CN210770165U true CN210770165U (en) | 2020-06-16 |
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| CN201921789762.9U Active CN210770165U (en) | 2019-10-23 | 2019-10-23 | Main gearbox of wind driven generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700837A (en) * | 2020-05-22 | 2021-11-26 | 上海圣克赛斯液压股份有限公司 | Power device and wind generating set |
-
2019
- 2019-10-23 CN CN201921789762.9U patent/CN210770165U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700837A (en) * | 2020-05-22 | 2021-11-26 | 上海圣克赛斯液压股份有限公司 | Power device and wind generating set |
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