CN202520486U - Engine room cover used for offshore wind driven generator - Google Patents
Engine room cover used for offshore wind driven generator Download PDFInfo
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Abstract
本实用新型的海上风力发电机用机舱罩,包括主机舱、散热舱和控制电路,主机舱和散热舱上分别设置有进风风扇和进气通道,其特征在于:主机舱与散热舱通过通风风扇相连通,进风风扇处设有除尘除盐过滤器;主机舱内设置有与控制电路相连接的温度传感器,控制电路可对进风风扇、通风风扇的运行状态以及百叶窗的开闭状态进行控制;在使用状态下,主机舱在进风风扇的作用下舱内气压始终大于外界气压。本实用新型在保证了主机舱内齿轮箱、发电机和变流器主要发热部件有效散热的同时,也有效避免了主机舱内部件的盐雾腐蚀,解决了现有机舱罩散热、防腐蚀功能不能同时完善的问题。具有防腐蚀能力强、维修成本低、通风散热性以及机组运行稳定的优点。
The nacelle cover for offshore wind power generators of the present invention includes a main engine cabin, a heat dissipation cabin and a control circuit. The main engine cabin and the heat dissipation cabin are respectively provided with an air intake fan and an air intake channel. It is characterized in that: the main engine cabin and the heat dissipation cabin are ventilated The fans are connected, and a dust removal and desalination filter is installed at the air intake fan; a temperature sensor connected to the control circuit is installed in the main engine compartment, and the control circuit can monitor the operating status of the intake fan and ventilation fan and the opening and closing status of the shutters. Control; in the state of use, the air pressure in the main cabin is always greater than the external air pressure under the action of the air intake fan. The utility model not only ensures the effective heat dissipation of the main heating parts of the gearbox, generator and converter in the main engine cabin, but also effectively avoids the salt spray corrosion of the components in the main engine cabin, and solves the heat dissipation and anti-corrosion functions of the existing engine room cover problems that cannot be perfected at the same time. It has the advantages of strong anti-corrosion ability, low maintenance cost, ventilation and heat dissipation, and stable operation of the unit.
Description
技术领域 technical field
本实用新型属于风力发电机设备领域,更具体的说,尤其涉及一种散热性能良好且可有效防盐雾腐蚀的海上风力发电机用机舱罩。 The utility model belongs to the field of wind power generator equipment, and more specifically relates to a nacelle cover for offshore wind power generators which has good heat dissipation performance and can effectively prevent salt spray corrosion.
背景技术 Background technique
随着社会的发展、经济的增长,能源消耗持续增加,面对日益严峻的能源环境问题,各国不得加大新能源的开发力度。在各种绿色能源中,风力发电逐渐成为最值得考虑的选择。风能是清洁的可再生能源之一,风力发电是新能源中技术成熟、具有规模开发条件和商业化发展前景的可再生能源技术,因此日益受到世界各国的重视。 With the development of society and economic growth, energy consumption continues to increase. Faced with increasingly severe energy and environmental problems, countries must not increase the development of new energy. Among all kinds of green energy, wind power has gradually become the most worthy of consideration. Wind energy is one of the clean renewable energy sources. Wind power generation is a renewable energy technology with mature technology, large-scale development conditions and commercial development prospects in new energy sources. Therefore, it is increasingly valued by countries all over the world.
海上风力发电机组一般矗立在偏远的近海及深海区域,交通较为不方便,维修维护成本极高,而机组在20年的使用寿命里,要经受各种复杂工况的考验,这就要求机组运行要有极高的可靠性和稳定性。风力发电机组在正常运转过程中,各转动摩擦的机械部件(如齿轮箱、发电机)和电器元件(如变流器)会产生大量的热量。如不能将产生的热量及时散发出去,将会使机舱内部温度过高,影响机组各部件的正常运行。此外,海上风力发电机组均安装于近海区域及深海区域,空气中含有大量随海水蒸发的盐分,形成浓度很高的盐雾,盐雾随空气流通进入机组内部,腐蚀机组内部设备及器件,使风力发电机组的承载能力大大降低,给设备正常安全运行带来严重后果;同时盐雾会与电器元件的金属物发生化学反应,使原有的载流面积减小,生成氧化合物使电气触点接触不良,它们将导致电气设备故障或毁坏。这就要求大功率、海上风力发电机组不仅要考虑自身的散热问题,同时必须充分考虑机组的防盐雾及密封问题。 Offshore wind turbines generally stand in remote offshore and deep sea areas, the traffic is inconvenient, and the maintenance cost is extremely high. In the 20-year service life of the unit, it has to withstand the test of various complex working conditions, which requires the unit to operate It must have high reliability and stability. During the normal operation of wind turbines, mechanical components (such as gearboxes and generators) and electrical components (such as converters) that rotate and rub will generate a lot of heat. If the heat generated cannot be dissipated in time, the internal temperature of the engine room will be too high, which will affect the normal operation of the various components of the unit. In addition, offshore wind turbines are installed in offshore areas and deep sea areas. The air contains a large amount of salt that evaporates with seawater, forming a high concentration of salt mist. The salt mist enters the unit with the air circulation, corroding the internal equipment and components of the unit. The carrying capacity of wind turbines is greatly reduced, which will bring serious consequences to the normal and safe operation of the equipment; at the same time, the salt spray will chemically react with the metal objects of the electrical components, reducing the original current-carrying area and generating oxygen compounds to make the electrical contacts Poor contact, they will cause malfunction or destruction of electrical equipment. This requires high-power and offshore wind turbines not only to consider their own heat dissipation, but also to fully consider the salt spray and sealing issues of the unit.
中国专利《200920162912》公开了一种机舱罩设计及具有这种机舱罩设计的机舱。该方案提供的机舱罩及机舱结构如图1所示,机舱罩在通风口设置过滤网5,防止灰尘进入机舱罩内部,并且将安装有大部分零部件的前舱设置成密闭式,保证了零部件不被盐雾腐蚀,降低了机组的维护成本。
Chinese patent "200920162912" discloses a nacelle cover design and a nacelle with such a nacelle cover design. The nacelle cover and the nacelle structure provided by this scheme are shown in Figure 1. The nacelle cover is provided with a
该项技术从理论上讲可以起到预期的防尘、防盐雾腐蚀的效果,提高机组运行稳定性的作用,但其也有本身设计的缺陷,首先,机舱罩是玻璃钢制品,均采用分开拼装方式,前舱的完全密封难以实现;其次,前舱设计为独立封闭空间,内部部件壳体散发与前舱内部的热量无法排出,不利于机组的稳定运行;再次,后舱散热采用空气强制吸入,从尾部自然流出方式,会导致后舱形成正压区域,带有盐雾的外部空气会在正压力的作用下扩散到前舱,不利于前舱内部部件的防护。 Theoretically speaking, this technology can play the expected anti-dust, anti-salt spray corrosion effect, and improve the operation stability of the unit, but it also has its own design defects. First, the nacelle cover is made of glass fiber reinforced plastics, which are assembled separately. In this way, the complete sealing of the front cabin is difficult to achieve; secondly, the front cabin is designed as an independent closed space, and the heat emitted by the internal component shell and the inside of the front cabin cannot be discharged, which is not conducive to the stable operation of the unit; thirdly, the rear cabin uses forced inhalation of air for heat dissipation , The way of natural outflow from the tail will lead to the formation of a positive pressure area in the rear cabin, and the external air with salt spray will diffuse to the front cabin under the effect of positive pressure, which is not conducive to the protection of the internal components of the front cabin.
发明内容 Contents of the invention
本实用新型为了克服上述技术问题的缺点,提供了一种散热性能良好且可有效防盐雾腐蚀的海上风力发电机用机舱罩。 In order to overcome the shortcomings of the above-mentioned technical problems, the utility model provides a nacelle cover for offshore wind power generators with good heat dissipation performance and effective salt spray corrosion resistance.
本实用新型的海上风力发电机用机舱罩,包括内部为空腔的主机舱、设置有散热部件的散热舱以及控制电路,主机舱的空腔内设置有齿轮箱、发电机和变流器;所述主机舱和散热舱上分别设置有进风风扇和进气通道,散热舱上设置有排气通道;其特别之处在于:所述主机舱与散热舱通过通风风扇相连通,进风风扇处设置有除尘除盐过滤器,通风风扇处设置有可进行开闭的百叶窗;主机舱内设置有与控制电路相连接的温度传感器,控制电路可对进风风扇、通风风扇的运行状态以及百叶窗的开闭状态进行控制;在使用状态下,主机舱在进风风扇的作用下舱内气压始终大于外界气压。 The nacelle cover for offshore wind power generators of the present utility model includes a main engine cabin with a cavity inside, a heat dissipation cabin provided with heat dissipation components and a control circuit, and a gear box, a generator and a converter are arranged in the cavity of the main engine cabin; The main engine compartment and the heat dissipation compartment are respectively provided with an air intake fan and an air intake channel, and the heat dissipation compartment is provided with an exhaust channel; the special feature is that: the main engine compartment and the heat dissipation compartment are connected through a ventilation fan, and the air intake fan A dust and desalination filter is installed at the ventilation fan, and shutters that can be opened and closed are installed at the ventilation fan; a temperature sensor connected to the control circuit is installed in the main engine compartment, and the control circuit can monitor the operating status of the air intake fan, the ventilation fan, and the shutters. The opening and closing state of the main engine compartment is controlled; in the operating state, the air pressure in the main cabin is always greater than the external air pressure under the action of the air intake fan.
主机舱内用于设置风力发电机组的机械和电器元件,其中的齿轮箱、发电机和变流器为主要发热部件;散热舱内设置有散热装置,主要实现散热功能。进风风扇用于向主机舱内排风,进气通道实现散热舱的进风,散热舱内的气体通过排气通道排出。通风风扇用于实现主机舱与散热舱的连通,改变了现有两舱室不连通的结构形式。通过除尘除盐过滤器的处理,可有效避免了盐雾进入到主机舱内,起到防腐蚀效果。只有主机舱内的温度升高到一定温度时,通风风扇和百叶窗才处于打开状态。进风风扇、通风风扇的运行状态以及百叶窗的开闭状态均由控制电路控制。 The main engine compartment is used to install the mechanical and electrical components of the wind power generating set, among which the gear box, generator and converter are the main heating components; the heat dissipation compartment is equipped with a heat dissipation device, which mainly realizes the heat dissipation function. The air intake fan is used to exhaust air into the main engine compartment, the air intake channel realizes the air intake of the cooling cabin, and the gas in the cooling cabin is discharged through the exhaust channel. The ventilation fan is used to realize the communication between the main cabin and the heat dissipation cabin, which changes the existing structural form that the two cabins are not connected. Through the treatment of dust removal and desalination filter, it can effectively prevent the salt mist from entering the main engine compartment and play an anti-corrosion effect. Only when the temperature in the main engine compartment rises to a certain temperature, the ventilation fan and the shutters are opened. The operating states of the air intake fan and the ventilation fan and the opening and closing states of the louvers are all controlled by the control circuit.
本实用新型的海上风力发电机用机舱罩,所述散热舱内设置有排风散热器,主机舱内设置有对齿轮箱、发电机和变流器降温的水冷管路,该水冷管路与排风散热器相连通。排风散热器为具有排风功能的散热器,通过冷却散热器,可实现对水冷管路的降温。 In the nacelle cover for offshore wind power generators of the utility model, an exhaust radiator is arranged in the heat dissipation cabin, and a water-cooling pipeline for cooling the gearbox, generator and converter is arranged in the main engine cabin, and the water-cooling pipeline and the The exhaust air radiator is connected. The exhaust radiator is a radiator with an exhaust function. By cooling the radiator, the temperature of the water-cooling pipeline can be reduced.
本实用新型的海上风力发电机用机舱罩,所述排风散热器与排风通道之间设置有导风装置。设置排风装置可确保热空气被排除舱外,避免热空气在散热舱内部的循环。 In the nacelle cover for offshore wind power generators of the utility model, an air guiding device is arranged between the exhaust radiator and the exhaust channel. Setting the exhaust device can ensure that the hot air is excluded from the cabin, avoiding the circulation of the hot air inside the cooling cabin.
本实用新型的海上风力发电机用机舱罩,所述进气通道处设置有过滤装置。设置过滤器可避免空气中的灰尘等杂质进入到散热舱内。 In the nacelle cover for offshore wind power generators of the utility model, a filtering device is arranged at the air intake passage. A filter is provided to prevent impurities such as dust in the air from entering the heat dissipation compartment.
本实用新型的有益效果是:本实用新型的机舱罩将主机舱与散热舱通过带有百叶窗的通风风扇相连通,并在主机舱的进风风扇设置除尘除盐过滤器,在保证了主机舱内齿轮箱、发电机和变流器主要发热部件有效散热的同时,也有效避免了主机舱内部件的盐雾腐蚀,解决了现有机舱罩散热、防腐蚀功能不能同时完善的问题。同时在工作的过程中,通过控制电路对进风风扇的控制,使主机舱内气压始终大于外界气压,进一步避免了外界以及散热舱内的盐雾进入到主机舱内,杜绝了盐雾腐蚀。 The beneficial effects of the utility model are: the engine room cover of the utility model communicates the main engine cabin with the heat dissipation cabin through a ventilation fan with a louver, and a dust removal and desalination filter is arranged on the air intake fan of the main engine cabin, ensuring that the main engine cabin While the main heat-generating parts of the internal gear box, generator and converter can effectively dissipate heat, it also effectively avoids the salt spray corrosion of the components in the main engine cabin, and solves the problem that the existing engine room cover cannot improve the heat dissipation and anti-corrosion functions at the same time. At the same time, during the working process, through the control of the air intake fan by the control circuit, the air pressure in the main engine compartment is always greater than the external air pressure, which further prevents the salt mist from the outside and the heat dissipation compartment from entering the main engine compartment, and prevents salt spray corrosion.
具体表现在:(1)在主机舱前安装进气风扇并辅以除尘除盐过滤装置,保持主机舱内部微正压,避免了含盐雾空气进入机舱内部,保护内部元器件,降低维修成本;(2)在主机舱和散热舱间加通风装置,通风装置辅以可控开合的百叶窗,既能实现主机舱的通风散热,又能保证主机舱的相对密封;(3)在散热舱的冷却风扇和排风通道间加导风筒,实现风扇吹出的热空气直接排出舱外,有效避免热流循环;(4)冷却风扇在将散热舱中空气排出过程中,造成散热舱中的负压,避免了含盐雾的温湿空气进入主机舱,提高机组运行稳定性。 The specific performance is as follows: (1) Install an intake fan in front of the main engine compartment and supplement it with a dust removal and desalination filter device to maintain a slight positive pressure inside the main engine compartment, avoiding the air containing salt mist entering the engine compartment, protecting internal components and reducing maintenance costs ; (2) Add ventilation devices between the main engine compartment and the heat dissipation compartment, supplemented by controllable opening and closing shutters, which can not only realize the ventilation and heat dissipation of the main engine compartment, but also ensure the relative sealing of the main engine compartment; (3) In the heat dissipation compartment An air guide tube is installed between the cooling fan and the exhaust channel, so that the hot air blown by the fan can be directly discharged out of the cabin, effectively avoiding heat flow circulation; pressure, which prevents the warm and humid air containing salt mist from entering the main engine compartment, and improves the operating stability of the unit.
附图说明 Description of drawings
图1为现有风力发电机用机舱罩的结构示意图; Fig. 1 is the structural representation of existing wind power generator nacelle cover;
图中:1前舱,2后舱,3热交换器,4散热器,5过滤网,6塔筒,7密封圈,8隔板,9冷却器。 In the figure: 1 front compartment, 2 rear compartment, 3 heat exchanger, 4 radiator, 5 filter screen, 6 tower tube, 7 sealing ring, 8 clapboard, 9 cooler.
图2为本实用新型的海上风力发电机用机舱罩的结构示意图。 Fig. 2 is a structural schematic diagram of the nacelle cover for the offshore wind power generator of the present invention.
图中:1进风风扇,2齿轮箱,3发电机,4变流器,5通风风扇,6进气通道,7排风散热器,8导风装置,9排气通道,10主机舱,11散热舱。 In the figure: 1 air intake fan, 2 gear box, 3 generator, 4 converter, 5 ventilation fan, 6 air intake channel, 7 exhaust radiator, 8 air guiding device, 9 exhaust channel, 10 main cabin, 11 cooling compartments.
具体实施方式 Detailed ways
下面结合附图与实施例对本实用新型作进一步说明。 Below in conjunction with accompanying drawing and embodiment the utility model is further described.
如图1所示,为专利号为CN200920162912的实用新型专利中公开的机舱罩的结构示意图,可见前舱1与后舱2通过隔板8隔开,处于不相通的状态;前舱1上设置有塔筒6和密封圈7,使得前舱1基本处于密封的状态,这种结构形式存在设计缺陷,首先,机舱罩一般为玻璃钢制品,采用分开拼装方式,前舱的完全密封难以实现,杜绝不了盐雾的进入;其次,前舱设计为独立封闭空间,内部部件壳体散发与前舱内部的热量无法排出,不利于机组的稳定运行;再次,后舱散热采用空气强制吸入,从尾部自然流出方式,会导致后舱形成正压区域,带有盐雾的外部空气会在正压力的作用下扩散到前舱,不利于前舱内部部件的防护。
As shown in Figure 1, it is a structural schematic diagram of the nacelle cover disclosed in the utility model patent whose patent number is CN200920162912. It can be seen that the front cabin 1 and the rear cabin 2 are separated by a
为了克服现有机舱罩存在的缺陷,如图2所示,给出了本实用新型的海上风力发电机用机舱罩的结构示意图,其包括主机舱10、散热舱11、进风风扇1、齿轮箱2、发电机3、变流器4、通风风扇5、进气通道6、排风散热器7、导风装置8、排气通道9;齿轮箱2、发电机3、变流器4均设置在主机舱10的内部,且为主要的发热部件。进风风扇1设置在主机舱10上,在进风风扇1处设置有除尘除盐过滤器,以便将进入到主机舱的空气中的杂质和盐分除去,避免盐雾对主机舱中的部件产生电化学腐蚀。通风风扇5设置在主机舱10与散热舱11的舱壁上,实现主机舱10与散热舱11的连通;还设置有与通风风扇5相配合的百叶窗,用于对主机舱10与散热舱11的连通状态进行控制,能够实现主机舱和散热舱的通风和隔离。
In order to overcome the defects existing in the existing nacelle cover, as shown in Figure 2, a structural schematic diagram of the nacelle cover for the offshore wind power generator of the present invention is provided, which includes the
进气通道6设置在散热舱11上,实现外界空气的顺利进入;使用时增加一定的过滤装置,以便滤除空气中的杂质。排风散热器7、导风装置8和排气通道9均设置在散热舱11的内部,排风散热器7为具有排风功能的散热器7。在主机舱内,设置有用对齿轮箱2、发电机3和变流器4进行降温的水冷管路,该水冷却管路与排风散热器7相连通,以便通过排风散热器7带走水冷管路中的大部分热量。排风散热器7通过导风装置8与排气通道相连通,导风装置8实现从排风散热器7吹出的热空气直接通过排气通道9排出散热舱11,以免热流循环。
The
当风力发电机组正常运转时,主要产热部件齿轮箱2、发电机3、变流器4产生的大部分热量通过水冷管路循环至排风散热器7,并进行冷却,带走其中大部分的热量,从而产生的热空气又通过导风装置8和排气通道9直接排出散热舱11的外部。这个过程中,散热舱11中空气的排出,造成其内部为负压,于是从进气通道6中吸入大量空气,并进行了过滤。导风装置8将排风散热器7和排气通道9直接相连,确保了热空气直接排出舱外,又从进气通道6吸入冷空气从而实现冷却的目的,避免了热空气在散热舱内部的循环。
When the wind turbine is in normal operation, most of the heat generated by the main heat-generating components gearbox 2,
与此同时齿轮箱2、发电机3和变流器4产生的热量另一部分直接排入主机舱10,如不采取措施将会使主机舱10内部温度持续上升,最终对机组运行造成障碍。为此在主机舱10和散热舱11间加通风风扇5,通风风扇5与可控开合的百叶窗结合,平时均关闭,主机舱10和散热舱11分离;当主机舱内部温度超标时开始工作,百叶窗打开,使主机舱10和散热舱11连通,通风风扇5将主机舱10内热空气排入散热舱11,直至降到合适温度通风风扇5重新关闭,整个过程是在控制电路的控制下完成的。主机舱10的进气来自进风风扇1,当通风风扇5关闭时,进风风扇1将少量过滤空气送入主机舱10,保持主机舱10内部的微正压,以防舱外含盐雾的湿热空气通过机舱罩不完全密封的空隙进入主机舱,腐蚀机舱内部元器件;当通风风扇5开启时,进风风扇1将较多的过滤空气送入主机舱10,冷却舱内温度。
At the same time, another part of the heat generated by the gearbox 2, the
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