阅读说明：本技术 一种采用直冷散热装置的ip23风力发电机 (IP23 wind driven generator adopting direct cooling heat dissipation device ) 是由 项峰 陈中亚 张伟 林鸿辉 陈宏钢 于 2019-09-17 设计创作，主要内容包括：本发明公开了一种风力发电机,旨在提供一种结构简单、散热效果好的采用直冷散热装置的IP23风力发电机。它包括发电机本体和散热装置,发电机本体的首端和尾端分别设有第一进气口和第二进气口,发电机中部设有出气口,散热装置布置在发电机本体上方,散热装置包括壳体、冷却风机和出风口,壳体底部设有两个分别与第一进气口、第二进气口对应且连通的第一进风口、第二进风口,壳体侧壁设有若干吸气口,吸气口与第一进风口和第二进风口之间形成第一气道、壳体上设有与所述出气口适配的通气口,通气口与出风口之间形成帮助发电机内气体向外排的第二气道。本发明节省了制造散热装置的成本,提升发电机的功率,降低度电成本。(The invention discloses a wind driven generator, and aims to provide an IP23 wind driven generator which is simple in structure and good in heat dissipation effect and adopts a direct cooling heat dissipation device. It includes generator body and heat abstractor, the head end and the tail end of generator body are equipped with first air inlet and second air inlet respectively, the generator middle part is equipped with the gas outlet, heat abstractor arranges in generator body top, heat abstractor includes the casing, cooling blower and air outlet, the casing bottom is equipped with two first air intakes that correspond and communicate with first air inlet, second air inlet respectively, the second air intake, the casing lateral wall is equipped with a plurality of induction ports, form first air flue between induction port and first air intake and the second air intake, be equipped with on the casing with the blow vent of gas outlet adaptation, form the inside gas of help generator to the second air flue of arranging outward between blow vent and the air outlet. The invention saves the cost for manufacturing the heat dissipation device, improves the power of the generator and reduces the cost of power consumption.)

1. An IP23 wind driven generator adopting a direct cooling heat dissipation device is characterized by comprising a generator body and the heat dissipation device, wherein the head end and the tail end of the generator body are provided with air inlets which are respectively a first air inlet and a second air inlet, the middle part of the generator is provided with an air outlet, the heat dissipation device is arranged above the generator body and comprises a shell, a cooling fan and an air outlet, wherein the bottom of the shell is provided with two first air inlets and two second air inlets which correspond to and are communicated with the first air inlets and the second air inlets respectively, the side wall of the shell is provided with a plurality of air suction ports, a first air passage is formed between the air suction ports and the first air inlets and between the air suction ports and the second air inlets, the shell is provided with air vents matched with the air outlets of the generator, a second air passage allowing the generator to exhaust air outwards is formed between the air vents and the air outlet, and the cooling fan is arranged near the air.

2. The IP23 wind driven generator using direct cooling heat sink as claimed in claim 1, wherein the air inlet is provided with filter cotton.

3. The IP23 wind generator with direct cooling heat sink as claimed in claim 2, wherein the filter cotton is provided with a wind pressure sensor on its side facing the inside of the housing, the wind pressure sensor is in communication with an external control system.

4. The IP23 wind driven generator adopting the direct cooling heat dissipation device according to claim 1, wherein the air outlet is provided with sound deadening cotton.

5. The IP23 wind driven generator using direct cooling heat dissipation device according to claim 2, wherein the top of the housing has an opening as large as the air suction opening, and the opening has filter cotton.

6. The IP23 wind driven generator using direct cooling heat dissipation device according to claim 1, wherein the air outlet channel formed between the cooling fan and the air outlet is of a frustum pyramid structure, and the cross-sectional area of the air outlet channel gradually decreases from the end far away from the air outlet to the end near the air outlet.

7. The IP23 wind driven generator adopting the direct cooling heat dissipation device as claimed in claim 1, wherein a retainer is embedded at the air outlet, and the outer edge of the retainer is tightly attached to the air outlet in the circumferential direction.

Technical Field

The invention relates to the field of wind power generation and heat dissipation, in particular to an IP23 wind driven generator adopting a direct cooling heat dissipation device.

Background

The mainstream aerogenerator on the market at present adopts the cooling method: an externally mounted air cooling system with internal drive (IC616), an externally mounted air cooling system without internal drive (IC 666), and an externally mounted air cooling (IC 86W). The above cooling method is to ensure the IP grade (IP 54) of the generator, and both the primary cooling medium (gas or liquid medium with temperature lower than that of a certain part of the motor, which will contact with the part of the motor and take away the heat released by the part) and the secondary cooling medium (gas or liquid with temperature lower than that of the primary cooling medium, which takes away the heat released by the primary cooling medium through the outer surface of the motor or a cooler) are heat exchanged by the cooling device, and then the interior of the generator is cooled. The heat dissipation effect of the primary and secondary heat exchangers is limited due to the limitation of their efficiency.

The motor housing protection grade consists of letters IP and two-digit characteristic numbers, wherein the first-digit characteristic number represents solid resistance, and the second-digit characteristic number represents liquid resistance. For example, the IP23 wind driven generator is related to the invention, the first characteristic number represents that the solid with the thickness of more than 12mm enters the motor, and the second characteristic number represents that the drip-proof motor, namely the water drenching within the 60-degree angle range with the vertical line has no harmful effect. The larger the IP characteristic number, the higher the motor casing protection level.

In the aspect of motor selection, the protection grade of a motor is generally considered in priority in China, the grade of the selected motor is higher and higher, the price is higher, actual conditions are not considered, and a heat dissipation device additionally arranged on the motor is higher and higher, so that the motor is excessive in function, low in efficiency and energy waste.

For the application occasions of the generator without high IP level, the heat dissipation device can be changed, a direct cooling mode is adopted, and the heat dissipation effect is greatly improved due to the fact that heat exchange between primary and secondary cooling media is avoided. In addition, the cost for manufacturing the heat dissipation device is saved, the power of the generator is improved, and the electricity consumption cost is reduced. For wind power plants, this cooling method is fully applicable since the generator is operated inside the nacelle.

The invention discloses a heat dissipation device of a generator in a fan and a fan applying the heat dissipation device, relates to the technical field of wind power generation, and aims to solve the problems that the heat dissipation device of the generator in the fan is high in cost and large in occupied space. The heat dissipation device of the generator in the fan comprises a ventilation pipe with heat conductivity, wherein one end of the ventilation pipe is communicated with a radiator, the other end of the ventilation pipe is communicated with a shell of the generator in the fan, and a pipe body of the ventilation pipe is located outside a cabin in the fan. The utility model discloses a be applicable to the heat dissipation of directly driving generator among the wind generating set. According to the utility model provides a scheme is gone to give the generator heat dissipation, and the effect is afraid of unobviously, because it solves the problem that heat abstractor manufacturing cost is high, the ventilation pipe that the volume ratio is less is provided, and the gas that the ventilation pipe can hold is very limited, dispels the heat as heat transfer medium through gas, and efficiency is not high.

Disclosure of Invention

The invention overcomes the defects of poor heat dissipation effect, complex structure and high manufacturing cost of the heat dissipation device in the existing heat dissipation device of the IP23 wind driven generator, and provides the IP23 wind driven generator which adopts the direct cooling heat dissipation device and has simple structure and good heat dissipation effect.

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

the utility model provides an adopt direct cooling heat abstractor's IP23 aerogenerator, includes generator body and heat abstractor, and the head end and the tail end of generator body are equipped with the air inlet, are first air inlet and second air inlet respectively, and the generator middle part is equipped with the gas outlet, heat abstractor arranges in generator body top, and heat abstractor includes casing, cooling blower and air outlet, and the casing bottom is equipped with two first air intakes, the second air intake that correspond and communicate with first air inlet, second air inlet respectively, and the casing lateral wall is equipped with a plurality of induction ports, form first air flue between induction port and first air intake and the second air intake, be equipped with on the casing with the blow vent of the gas outlet adaptation of generator, form between blow vent and the air outlet and allow the outside carminative second air flue of generator gas, cooling blower arranges near.

In order to reduce the cost of the heat dissipation device, the invention adopts a mode of taking away the heat inside the generator by flowing air, only one primary cooling medium is involved, the air can be in direct contact with the internal parts of the generator, and the heat exchange rate is higher. The reason that the heat dissipation device is arranged above the generator is that hot air is light and rises upwards, and the air temperature inside the generator is high (the air temperature in the inner cavity of the generator is high due to the fact that a generator unit generates heat when running), so that the heat dissipation device above the generator can be conveniently discharged to the outside.

After the cooling fan is started, air in the second air passage is firstly pumped out of the heat dissipation device, hot air in the generator is guided to move outwards from the air outlet and the second air passage, and the hot air in the generator flows through the air outlet, the air vent, the second air passage and the air outlet successively and then is discharged into the atmosphere. At the moment, the air in the generator is drawn out, the air pressure is low, cold air with high external air pressure of the heat dissipation device can enter the first air passage in the shell from the air suction port in the shell, then enters the generator through the air inlets at the head end and the tail end of the generator, and is subjected to heat transfer with the internal heating part of the generator, so that cooling is realized. As long as the cooling fan is operated all the time, the heat dissipation device can play a role of heat dissipation all the time.

Preferably, the air suction port is provided with filter cotton. Because the cold air entering the generator from the air inlet for cooling can be in direct contact with internal parts of the generator, in order to avoid the abrasion of the internal parts of the generator caused by impurities in the cold air, the air inlet is provided with filter cotton for adsorbing and filtering impurity particles.

Preferably, a wind pressure sensor is arranged on one side, facing the inside of the shell, of the filter cotton, and the wind pressure sensor is communicated with an external control system. After the filter cotton adsorbs a certain amount of impurities, the performance of adsorption and filtration can be obviously reduced, the performance reduction can cause the air pressure entering the shell to obviously change, the air pressure sensor arranged on the inner side of the filter cotton can capture information in time and inform workers that the air pressure obviously changes and possibly caused by the performance reduction of the filter cotton, and the filter cotton is reminded to be replaced.

Preferably, the air outlet is provided with silencing cotton. Because the heat radiating device is only provided with one air outlet exhausting outwards, and a plurality of air outlets sucking inwards are formed, the air quantity at the air outlet is very large, the air speed is very high, and the noise at the air outlet is also very large, the abnormal sound generated at the air outlet can be effectively reduced by the device provided with the silencing cotton, and the noise pollution is reduced.

Preferably, the top of the shell is provided with an opening with the same size as the air suction port, and the opening is provided with filter cotton. The opening is newly established at the casing top, can reduce the pressure of original each induction port on the casing, improves the efficiency of admitting air of casing for inside outside cold air can supply the generator more fast, has alleviateed whole heat abstractor's weight simultaneously, offers convenience for heat abstractor's installation.

Preferably, an air outlet channel formed between the cooling fan and the air outlet is of a frustum pyramid structure, and the cross section area of the air outlet channel is gradually reduced from one end far away from the air outlet to one end close to the air outlet. The air outlet channel near the air outlet is narrower and narrower when being closer to the air outlet, so that the air outlet speed can be quicker, hot air in the generator can also enter the air outlet channel more quickly, and the heat dissipation efficiency of the whole heat dissipation device is improved.

Preferably, a guard ring is embedded at the air outlet, and the outer edge of the guard ring is tightly attached to the air outlet in the circumferential direction. Because the air flow rate at the air outlet is faster, the stress at the local position on the originally designed square air outlet is larger. After the guard ring is additionally arranged, the shape of the air outlet is changed into a circular shape, the impact of air on the air outlet is reduced, and the air outlet is not easy to deform.

Compared with the prior art, the invention has the advantages that:

the heat dissipation device is arranged above the generator body, so that hot air in the generator body is allowed to be discharged upwards according to a natural rule, the cooling fan can work at low power to realize air heat dissipation, and energy is saved;

the heat dissipation device is provided with a plurality of airflow channels for the cool air for heat dissipation to enter the generator, so that the heat dissipation efficiency in the generator is improved;

the air inlet channel (the external cold air is supplemented to the generator) and the air outlet channel (the hot air which completes heat exchange in the generator is discharged from the generator) which are arranged in the heat dissipation device are mutually independent, so that the heat exchange is avoided, and the heat dissipation efficiency of the wind driven generator is improved;

the filter cotton with the filtering function arranged on the air suction port can prevent dust impurities in the air from entering the generator and reduce the damage of external air to internal parts of the generator;

the wind pressure sensor can feed back the performance of the filter cotton in time, and has the function of reminding the filter cotton to be replaced;

the air outlet of the heat dissipation device is provided with a noise reduction surface which can reduce noise pollution generated when the cooling fan dissipates heat;

the air outlet channel of the cooling fan is designed to be of a prismatic table structure, so that the outward discharging speed of hot air can be increased, the discharging speed of the hot air is increased, and the air suction (cold air supplement) efficiency of the generator is further improved.

Drawings

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

FIG. 2 is a schematic structural diagram of a heat dissipation device;

in the figure: the generator comprises a generator body 1, a heat dissipation device 2, a shell 21, a cooling fan 22, an air outlet 23, an air inlet 3, a first air inlet 31, a second air inlet 32, an air outlet 4, a first air inlet 5, a second air inlet 6, an air suction port 7, an air vent 8, filter cotton 9 and silencing cotton 10.

Detailed Description

The invention is described in further detail below with reference to the following detailed description and accompanying drawings:

as shown in fig. 1 and fig. 2, an IP23 wind driven generator using direct cooling heat dissipation device includes a generator body 1 and a heat dissipation device 2, the generator body 1 has air inlets at the head end and the tail end, which are respectively a first air inlet 31 and a second air inlet 32, the middle of the generator is provided with an air outlet 4, the heat dissipation device 2 is disposed above the generator body 1, the heat dissipation device 2 includes a housing 21, a cooling fan 22 and an air outlet 23, the bottom of the housing 21 is provided with two first air inlets 5 and second air inlets 6 corresponding to and communicating with the first air inlet 31 and the second air inlet 32, the side wall of the housing 21 is provided with a plurality of air inlets 7, a first air passage is formed between the air inlets 7 and the first air inlets 5 and the second air inlets 6, the housing is provided with an air vent 8 adapted to the air outlet 4 of the generator, a second air passage allowing the generator air to exhaust outwards is formed between, the cooling fan 22 is disposed near the air outlet 23.

Air enters the interior of the generator from the first air duct and is in direct contact with the generator components as a primary cooling medium, and heat exchange occurs. Arrange heat abstractor 2 above the generator, the inside air of generator is heated and becomes hot-air, and hot-air proportion is little, can rise, and hot-air just gets into the second air flue from the gas outlet.

After the cooling fan 22 is started, the air in the second air passage is first pumped out of the heat dissipation device 2, so that a vacuum or low-pressure area is formed in the second air passage, and at this time, the air inside the generator will flow into the second air passage, and then further discharged to the atmosphere through the air outlet 23.

Specifically, because the air in the second air passage is extracted by the cooling fan 22, the air pressure is low, and the cold air with high external air pressure in the heat dissipation device 2 firstly enters the first air passage in the casing 21 from the air suction port 7 on the casing 21, and then enters the interior of the generator through the air inlets 3 at the head end and the tail end of the generator to perform heat transfer with the internal heating components of the generator, so that cooling is realized.

The air inlet 7 is provided with filter cotton 9. When outside air gets into heat abstractor 2, some impurity in the air can remain on filter pulp 9, can not cause wearing and tearing to the part in air flue inner wall or the generator after inside the clean air entering air flue or the generator that pass through the filtration.

Then, a wind pressure sensor is arranged on the side of the filter cotton 9 facing the inside of the shell 21, and the wind pressure sensor is communicated with an external control system. The wind pressure sensor can catch the wind pressure size in the air flue in time, informs the staff that the atmospheric pressure changes remarkably, and the filter pulp performance is reduced probably to cause, reminds the staff to inspect and in time change the filter pulp.

The air outlet 23 is provided with silencing cotton 10. The noise reduction surface can effectively reduce abnormal sound generated at the air outlet and reduce noise pollution.

The top of the shell 21 is provided with an opening with the same size as the air suction port, and the opening is provided with filter cotton 9. The opening is newly established at the casing top, can reduce the pressure of original each induction port on the casing, improves the efficiency of admitting air of casing for inside outside cold air can supply the generator more fast, has alleviateed whole heat abstractor's weight simultaneously, brings the facility for heat abstractor's transport and installation.

The air outlet channel formed between the cooling fan 22 and the air outlet 4 is of a frustum structure, and the cross-sectional area of the air outlet channel is gradually reduced from one end far away from the air outlet to one end close to the air outlet. When the air flows through the air outlet channel, the air flow speed becomes fast due to the fact that the air outlet channel becomes narrow, and the air flow speed is accelerated to improve the overall heat dissipation efficiency.

A guard ring is embedded at the air outlet 23, and the outer edge of the guard ring is tightly attached to the air outlet in the circumferential direction. When air flows out of the air outlet, the stress of the local position on the square air outlet is larger. After the guard ring is additionally arranged, the shape of the air outlet is changed into a circular shape, the impact of air on the air outlet is reduced, the air outlet is not easy to deform, and the service life is prolonged.