CN111237440A - Split type radiator for lubricating oil of gearbox of wind generating set and working method - Google Patents
Split type radiator for lubricating oil of gearbox of wind generating set and working method Download PDFInfo
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- CN111237440A CN111237440A CN202010167894.9A CN202010167894A CN111237440A CN 111237440 A CN111237440 A CN 111237440A CN 202010167894 A CN202010167894 A CN 202010167894A CN 111237440 A CN111237440 A CN 111237440A
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- radiator
- lubricating oil
- gearbox
- generating set
- wind generating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
- F16H57/0416—Air cooling or ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
- F16H57/0417—Heat exchangers adapted or integrated in the gearing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention discloses a split type radiator for lubricating oil of a gear box of a wind generating set and a working method, and belongs to the technical field of wind power generation. The outlet end radiator and the inlet end radiator form a radiator unit through a connecting piece, and an internal oil chamber of the outlet end radiator and an internal oil chamber of the inlet end radiator are communicated through a middle connecting pipe; the axial flow fan is arranged at the upper part of the radiator unit; the radiator unit is connected to the lubricating oil circulation pipeline of the gear box of the wind generating set by the side. Each split type part of the radiator is convenient to hoist, transport and install; the pipeline connection is simple, leakage points are reduced, and the installation and maintenance are convenient and simple; meanwhile, the size of the split type component can be increased to the maximum extent, so that the whole effective area of the radiator is increased, the circulating air quantity of the fan is increased, the radiating efficiency of the radiator is effectively improved under the condition of limited original hoisting and mounting conditions, the control of the ambient temperature of the engine room is facilitated, and the normal operation of the wind generating set is guaranteed.
Description
Technical Field
The invention belongs to the technical field of wind power generation, and particularly relates to a split type radiator for lubricating oil of a gear box of a wind generating set and a working method.
Background
With the increasing importance of the international society on the problems of guaranteeing energy safety, protecting ecological environment, coping with climate change and the like, renewable energy has become the focus of the development of the global energy industry. According to the method, many countries develop policies and regulations for developing renewable energy sources, domestic energy source structures are promoted to be transformed to clean low carbon, positive effects are achieved, and wind power plays a significant role in the power industry of China.
However, with the development of wind power in China for more than 30 years, the single machine power of the wind turbine generator is continuously increased, especially megawatt wind power in nearly 10 years is subject to the development of introduction, digestion and absorption in China manufacturing, and the current domestic fan which runs for more than 10 years has the phenomena of insufficient digestion and water and soil. The wind power generation set fault rate is high because most wind farms are built in remote and desolate and cool places with severe environments and are mostly located in desertification places, and one problem of high fault rate of the wind power generation set is that the oil temperature of a gear box is increased due to low working efficiency of an air cooling radiator, a fan can only run in a limited power mode, if the temperature is still in an increasing trend, shutdown protection is caused when the shutdown temperature is reached, and the normal operation of the wind farms is influenced due to shutdown operation of the fan. The reason that the working efficiency of the air-cooled radiator is low is mainly that the cabin is compact in design, limited in space and limited in construction conditions, high-power radiating equipment cannot be installed, and in addition, a large number of heating elements are arranged, so that the ambient temperature in the cabin is increased, the heat exchange efficiency is insufficient, and the like.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the lubricating oil split type radiator for the gear box of the wind generating set and the working method, so that the radiating efficiency of the radiator is improved under the condition of limited original hoisting and mounting conditions, and the normal operation of the wind generating set is guaranteed.
The invention is realized by the following technical scheme:
the invention discloses a split type radiator for lubricating oil of a gear box of a wind generating set, which comprises an outlet end radiator, an inlet end radiator, a connecting piece, an axial fan and a middle connecting pipe, wherein the outlet end radiator is connected with the inlet end radiator; the outlet end radiator and the inlet end radiator form a radiator unit through a connecting piece, and an internal oil chamber of the outlet end radiator and an internal oil chamber of the inlet end radiator are communicated through a middle connecting pipe; the axial flow fan is arranged at the upper part of the radiator unit;
when the radiator unit is used, the radiator unit is connected to a lubricating oil circulating pipeline of the gear box of the wind generating set.
Preferably, the radiating fins of the outlet end radiator and the inlet end radiator are corrugated.
Preferably, the tip diameter of the axial fan is equal to the width of the windward side of the radiator unit.
Preferably, the axial fan is vertically aligned with the radiator unit.
Preferably, the lower plane of the radiator unit is provided with a dust screen.
Preferably, the radiator module is horizontally fixed to a bracket above the gearbox.
Preferably, the axial flow fan is externally provided with a wind scooper.
The invention discloses a working method of the split type radiator for lubricating oil of the gear box of the wind generating set, which comprises the following steps:
when the temperature of the lubricating oil in the gear box is less than T1When the motor is started, the axial flow fan is closed, and the lubricating oil of the gear box does not enter the radiator unit; when T is1Oil temperature less than or equal to T2When the cooling device is used, the axial flow fan is closed, and the lubricating oil of the gear box flows back to the lubricating oil circulating pipeline of the gear box after entering the radiator unit and being cooled; when T is2Oil temperature less than or equal to T3When the radiator is used, the axial flow fan is started, and the lubricating oil of the gearbox flows back to the lubricating oil circulating pipeline of the gearbox after entering the radiator unit and being cooled; when T is3Oil temperature less than or equal to T4When the radiator is started, the axial flow fan is started, and the lubricating oil of the gear box flows back to the lubricating oil circulation pipeline of the gear box after all the lubricating oil of the gear box enters the radiator unit and is cooled; wherein T is1＜T2＜T3＜T4。
Preferably, T1At 45 ℃ and T2At 55 ℃ and T3At 60 ℃ and T4The temperature was 75 ℃.
Further preferably, when the temperature of the gearbox lubricating oil is less than 45 ℃, the oil flow in the gearbox lubricating oil circulating pipeline is 40L/min, and when the temperature of the gearbox lubricating oil is more than or equal to 45 ℃, the oil flow in the gearbox lubricating oil circulating pipeline is 80L/min.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention discloses a split type radiator for lubricating oil of a gearbox of a wind generating set.A radiator unit consists of an outlet end radiator and an inlet end radiator through a connecting piece, and each split type part is convenient to hoist, transport and install; the radiator is arranged in the engine room, so that the influence on the engine room is small, the construction is easy, and the influence of the external environment of the engine room is avoided; the pipeline connection is simple, leakage points are reduced, and the installation and maintenance are convenient and simple; meanwhile, the radiator adopts split type components, so that the size of the split type components can be increased to the maximum extent, the whole effective area of the radiator is increased, the circulating air quantity of the fan is increased, the radiating efficiency of the radiator is effectively improved under the condition of limited original hoisting and mounting conditions, the control of the cabin environment temperature is facilitated, and the normal operation of the wind generating set is guaranteed. Compared with the method of connecting a plurality of radiating systems in series and in parallel on the basis of the original radiator, the method can save a large amount of reconstruction and maintenance cost and save precious space in the engine room.
Further, the radiating fins of the outlet end radiator and the inlet end radiator are corrugated, so that the heat exchange area can be increased, and blockage can be effectively prevented.
Furthermore, the diameter of the blade top of the axial flow fan is equal to the width of the windward side of the radiator unit, so that the utilization rate of the air outlet of the axial flow fan can be effectively improved, and the heat dissipation efficiency is improved.
Furthermore, the axial flow fan is vertically aligned with the radiator unit, so that forced airflow of the axial flow fan can be efficiently utilized, and the radiating efficiency is improved.
Furthermore, a dustproof net can be arranged on the lower plane of the radiator unit according to the surrounding actual environment condition, so that the entering of large particles such as catkin is reduced.
Furthermore, the air guide cover is arranged outside the axial flow fan, so that air flow is prevented from overflowing and dispersing, and the heat dissipation effect is further improved.
According to the working method of the split type radiator for the lubricating oil of the gearbox of the wind generating set, disclosed by the invention, the working mode temperature points of a plurality of radiators are divided according to the working oil temperature requirement of the lubricating oil of the gearbox, when the oil temperature is lower, a radiator system is not started, and the lubricating oil is prevented from being viscous due to too low oil temperature to influence the normal operation of the gearbox; when the oil temperature gradually rises, the axial flow fan and the radiator unit are gradually started in stages, so that the lubricating oil of the gear box is radiated, the energy consumption is reduced, and the cost is saved.
Furthermore, the specific numerical value of each temperature point can meet the heat dissipation requirement in the actual work of the gearbox.
Furthermore, when the oil temperature is higher, the oil flow in the lubricating oil circulation pipeline of the gearbox is increased, and the heat dissipation efficiency is improved.
Drawings
FIG. 1 is a schematic front view of the overall structure of the present invention;
fig. 2 is a side view of the overall structure of the present invention.
In the figure: 1-outlet end radiator, 2-inlet end radiator, 3-connecting piece, 4-axial flow fan and 5-middle connecting pipe.
Detailed Description
The invention will now be described in further detail with reference to the following drawings and specific examples, which are intended to be illustrative and not limiting:
referring to fig. 1, the lubricating oil split type radiator for the gear box of the wind generating set comprises an outlet end radiator 1, an inlet end radiator 2, a connecting piece 3, an axial flow fan 4 and a middle connecting pipe 5; the outlet end radiator 1 and the inlet end radiator 2 form a radiator unit through the connecting piece 3, and the radiating fins of the outlet end radiator 1 and the inlet end radiator 2 are corrugated, so that the heat exchange area can be increased, and the blockage can be effectively prevented.
The internal oil chamber of the outlet end radiator 1 is communicated with the internal oil chamber of the inlet end radiator 2 through a middle connecting pipe 5 to form a sealed channel; the axial flow fan 4 is arranged on the upper portion of the radiator unit, the axial flow fan 4 is connected with the motor, and the motor is connected with the master control PLC of the wind turbine generator set and used for controlling the opening and closing of the axial flow fan 4. The size of the axial flow fan 4 covers the whole radiator unit as much as possible, the diameter of the blade top is designed to be equal to the width of the windward side of the radiator unit, the axial flow fan 4 is vertically aligned with the radiator unit, and an air guide cover is arranged outside the axial flow fan 4, so that air flow overflow and dispersion are reduced, and the energy utilization rate is improved.
According to the surrounding environment condition, the lower plane of the radiator unit is provided with the dustproof net, and the dustproof net is mainly used for preventing large particles such as catkin from entering and silting to influence the radiating efficiency.
An oil outlet pipe of the outlet end radiator 1 and an oil inlet pipe of the inlet end radiator 2 are respectively connected with a lubricating oil circulating pipeline of a gear box of the wind generating set, so that the radiator unit is connected to the lubricating oil circulating pipeline of the gear box of the wind generating set in a bypassing manner, and the radiator unit is horizontally fixed on a support above the gear box.
The invention is further explained by the working method of the lubricating oil split type radiator of the gear box of the wind generating set in the 1.5MW double-fed wind generating set:
when the oil temperature is lower than 45 ℃, a low-speed pump is adopted to keep the oil flow of 40L/min, and if the pressure in the system is higher than 10bar at the moment, the gear lubricating oil directly flows back to the gearbox through an overflow valve; the pressure in the pipeline is gradually reduced along with the rise of the oil temperature, when the pressure is between 3bar and 10bar, the 10bar overflow valve is automatically closed, the 3bar overflow valve is automatically opened, and the gear lubricating oil flows back to the gear box through the coarse filter screen through the temperature control valve to form a loop; along with the circulation of the gear box, the oil temperature further rises, when the pressure in a pipeline is reduced to be below 3bar, the overflow valves of 3bar and 10bar are closed, gear lubricating oil flows back to the gear box through the two layers of filter screens through the temperature control valve to form a loop, and at the moment, the circulation path of the gear lubricating oil is in a bypass mode, namely the split type radiator bypass of the gear box lubricating oil of the wind generating set is adopted.
When the oil temperature is 45-60 ℃, the system adopts a high-speed pump through PLC control, and the oil flow of 80L/min is kept. After passing through the two layers of filter screens, part of gear lubricating oil enters the radiator unit for cooling and flows back to the gear box to form a loop, and part of gear lubricating oil flows back to the gear box through the temperature control valve to form a loop, when the oil temperature reaches 55 ℃, the system starts the axial flow fan through the control of the PLC, and a circulating path in the oil temperature range is a mixed mode. The heat radiator unit in the mode effectively increases the windward area, the corrugated air duct fins can effectively prevent the fins from being blocked, the heat exchange area of the oil side and the air side is increased, and the heat radiation effect is good.
When the oil temperature is between 60 ℃ and 75 ℃, the temperature control valve is completely closed, the system adopts a high-speed pump through PLC control, the axial flow fan is started, gear lubricating oil passes through two layers of filter screens, then the gear lubricating oil completely enters the radiator unit for cooling, and finally flows back to the gear box to form a loop, and a circulating path in the oil temperature range is in a full cooling mode. The radiator unit in the mode is matched with the axial flow fan for forced air cooling, so that the cooling effect is better.
GB/T19073 plus 2008 stipulates that the maximum temperature of an oil pool of the gearbox is not higher than 85 ℃, the difference between the general oil inlet temperature and the oil temperature of the oil pool is 10 ℃, therefore, the maximum oil inlet temperature is set to be 75 ℃, namely T4Set at 75 ℃ T1、T2And T3Setting according to actual needs.
It should be noted that the above description is only one embodiment of the present invention, and all equivalent changes of the system described in the present invention are included in the protection scope of the present invention. Persons skilled in the art to which this invention pertains may substitute similar alternatives for the specific embodiments described, all without departing from the scope of the invention as defined by the claims.
Claims (10)
1. A split type radiator for lubricating oil of a gear box of a wind generating set is characterized by comprising an outlet end radiator (1), an inlet end radiator (2), a connecting piece (3), an axial flow fan (4) and a middle connecting pipe (5); the outlet end radiator (1) and the inlet end radiator (2) form a radiator unit through a connecting piece (3), and an internal oil chamber of the outlet end radiator (1) is communicated with an internal oil chamber of the inlet end radiator (2) through a middle connecting pipe (5); an axial flow fan (4) is arranged at the upper part of the radiator unit;
when the radiator unit is used, the radiator unit is connected to a lubricating oil circulating pipeline of the gear box of the wind generating set.
2. The split type radiator for lubricating oil of the gearbox of the wind generating set according to claim 1, wherein the radiating fins of the outlet end radiator (1) and the inlet end radiator (2) are corrugated.
3. The split type lubricating oil radiator for the gearbox of the wind generating set according to claim 1, wherein the diameter of the blade top of the axial flow fan (4) is equal to the width of the windward side of the radiator unit.
4. The split type radiator for lubricating oil of the gearbox of the wind generating set according to claim 1, wherein the axial flow fan (4) is vertically aligned with the radiator unit.
5. The split type lubricating oil radiator for the gearbox of the wind generating set according to claim 1, wherein a dustproof net is arranged on the lower plane of the radiator unit.
6. The split type lubricating oil radiator for the gearbox of the wind generating set according to claim 1, wherein the radiator unit is horizontally fixed on a bracket above the gearbox.
7. The split type radiator for lubricating oil of the gearbox of the wind generating set according to claim 1, wherein an air guide cover is arranged outside the axial flow fan (4).
8. The working method of the split type radiator for the lubricating oil of the gearbox of the wind generating set according to any one of claims 1 to 7 is characterized by comprising the following steps:
when the temperature of the lubricating oil in the gear box is less than T1When the motor is started, the axial flow fan (4) is turned off, and lubricating oil of the gear box does not enter the radiator unit; when T is1Oil temperature less than or equal to T2When the radiator is used, the axial flow fan (4) is closed, and the lubricating oil of the gear box flows back to the lubricating oil circulating pipeline of the gear box after entering the radiator unit to be cooled; when T is2Oil temperature less than or equal to T3When the radiator is used, the axial flow fan (4) is started, and the lubricating oil of the gearbox flows back to the lubricating oil circulating pipeline of the gearbox after entering the radiator unit and being cooled; when T is3Oil temperature less than or equal to T4When the radiator is used, the axial flow fan (4) is started, and the lubricating oil of the gear box flows back to the lubricating oil circulating pipeline of the gear box after all the lubricating oil of the gear box enters the radiator unit to be cooled; wherein T is1＜T2＜T3＜T4。
9. The working method of the split type radiator for lubricating oil of the gearbox of the wind generating set according to claim 8, wherein T is T1At 45 ℃ and T2At 55 ℃ and T3At 60 ℃ and T4The temperature was 75 ℃.
10. The working method of the split type radiator for the lubricating oil of the gearbox of the wind generating set according to claim 9, wherein when the temperature of the lubricating oil of the gearbox is less than 45 ℃, the oil flow in the lubricating oil circulating pipeline of the gearbox is 40L/min, and when the temperature of the lubricating oil of the gearbox is more than or equal to 45 ℃, the oil flow in the lubricating oil circulating pipeline of the gearbox is 80L/min.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010167894.9A CN111237440A (en) | 2020-03-11 | 2020-03-11 | Split type radiator for lubricating oil of gearbox of wind generating set and working method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010167894.9A CN111237440A (en) | 2020-03-11 | 2020-03-11 | Split type radiator for lubricating oil of gearbox of wind generating set and working method |
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| CN111237440A true CN111237440A (en) | 2020-06-05 |
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| CN202010167894.9A Pending CN111237440A (en) | 2020-03-11 | 2020-03-11 | Split type radiator for lubricating oil of gearbox of wind generating set and working method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100026866A (en) * | 2008-09-01 | 2010-03-10 | 두산중공업 주식회사 | Cooling lubrication system of wind generating gearbox |
| CN104806743A (en) * | 2015-03-27 | 2015-07-29 | 龙源内蒙古风力发电有限公司 | Wind driven generator and method for controlling gear box lubricating and cooling system thereof |
| CN106151477A (en) * | 2016-08-17 | 2016-11-23 | 无锡市鑫盛换热器制造有限公司 | Gearbox lubrication cooling system and method for work thereof |
| CN110425905A (en) * | 2019-09-04 | 2019-11-08 | 常州安迪维换热器有限公司 | Heat radiator assembly |
| CN211693478U (en) * | 2020-03-11 | 2020-10-16 | 中国华能集团清洁能源技术研究院有限公司 | Split type radiator of wind generating set gear box lubricating oil |
-
2020
- 2020-03-11 CN CN202010167894.9A patent/CN111237440A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100026866A (en) * | 2008-09-01 | 2010-03-10 | 두산중공업 주식회사 | Cooling lubrication system of wind generating gearbox |
| CN104806743A (en) * | 2015-03-27 | 2015-07-29 | 龙源内蒙古风力发电有限公司 | Wind driven generator and method for controlling gear box lubricating and cooling system thereof |
| CN106151477A (en) * | 2016-08-17 | 2016-11-23 | 无锡市鑫盛换热器制造有限公司 | Gearbox lubrication cooling system and method for work thereof |
| CN110425905A (en) * | 2019-09-04 | 2019-11-08 | 常州安迪维换热器有限公司 | Heat radiator assembly |
| CN211693478U (en) * | 2020-03-11 | 2020-10-16 | 中国华能集团清洁能源技术研究院有限公司 | Split type radiator of wind generating set gear box lubricating oil |
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