阅读说明：本技术 一种发电机空冷系统散热风道结构 (Heat dissipation air duct structure of generator air cooling system ) 是由 袁海华 于 2020-11-19 设计创作，主要内容包括：本发明提供了一种发电机空冷系统散热风道结构,包括用于输送冷风进入发电机内部的送风道、用于从发电机内部输出热风的回风道、以及热交换器；所述回风道上设置有换风口,所述换风口与出风道连通,所述出风道与外部连通；所述回风道上还设置有新风口,所述新风口与新风道连通,所述新风道的进风口处设置有用于将新风送入所述新风道的进风风机；所述出风口相较于所述新风口的位置远离所述热交换器的所述入风口。本发明的散热风道结构可以排除部分热风的同时,送入新风,降低了进入热交换器的热空气的温度；同时可以在所述回风道上靠近所述热交换器的所述入风口处形成旋转气流,使得热风与新风充分混合后,进入所述热交换器。(The invention provides a heat dissipation air duct structure of a generator air cooling system, which comprises an air supply duct for conveying cold air into a generator, an air return duct for outputting hot air from the inside of the generator and a heat exchanger, wherein the heat exchanger is arranged in the generator; the air return duct is provided with an air exchange port, the air exchange port is communicated with the air outlet duct, and the air outlet duct is communicated with the outside; the air return duct is also provided with a fresh air port which is communicated with the fresh air duct, and an air inlet fan for feeding fresh air into the fresh air duct is arranged at the air inlet of the fresh air duct; the air outlet is far away from the air inlet of the heat exchanger compared with the position of the fresh air inlet. The heat dissipation air channel structure can discharge part of hot air and send fresh air at the same time, so that the temperature of the hot air entering the heat exchanger is reduced; meanwhile, a rotating airflow can be formed on the air return channel close to the air inlet of the heat exchanger, so that hot air and fresh air are fully mixed and then enter the heat exchanger.)

1. A heat dissipation air channel structure of an air cooling system of a generator comprises an air supply channel for conveying cold air into the interior of the generator, an air return channel for outputting hot air from the interior of the generator and a heat exchanger; the air inlet of the heat exchanger is communicated with the air return duct, and the air outlet of the heat exchanger is communicated with the air supply duct; the air return duct is also provided with a fresh air port which is communicated with the fresh air duct, and an air inlet fan for feeding fresh air into the fresh air duct is arranged at the air inlet of the fresh air duct; the air outlet is far away from the air inlet of the heat exchanger compared with the position of the fresh air inlet.

2. The heat dissipation air duct structure of the air cooling system of the generator as claimed in claim 1, wherein an exhaust fan is further disposed at an outlet of the air outlet duct, and is configured to exhaust a portion of hot air in the air return duct to the outside.

3. The generator air cooling system heat dissipation air duct structure of claim 2, wherein the pipe diameter of the air outlet duct is smaller than that of the fresh air duct; the power of the air inlet fan is larger than that of the air exhaust fan.

4. The cooling air duct structure for generator air-cooling system as claimed in claim 1, wherein the air inlet of the new air duct is further provided with a filtering device, and the filtering device includes a filter screen and a desiccant.

5. The generator air cooling system heat dissipation air duct structure of claim 1, wherein the fresh air duct is externally coated with a heat insulation layer.

6. The heat dissipation air duct structure for air cooling system of generator as claimed in claim 1, wherein the distance between the air outlet of the air return duct and the fresh air inlet is greater than 0.5 m.

7. The cooling air duct structure for air cooling system of generator according to claim 2, wherein the air inlet of the new air duct is located outside the building where the generator is located.

Technical Field

The invention belongs to the technical field of power equipment, and particularly relates to a heat dissipation air duct structure of a generator air cooling system.

Background

At present, sites such as steel plants, smelting plants and the like which need long-time uninterrupted work are generally provided with standby generator sets. Among the current air cooling generator, including the import motor, there is the defect in the design for some motors, and the calorific capacity is greater than the heat dissipation capacity when the motor is fully loaded operation, and the motor radiating effect is very poor, and the motor temperature risees, finally leads to motor life to shorten greatly.

Although the prior art provides a plurality of solutions, for example, for a motor with a large axial space of a rotor, fans can be additionally arranged at the positions, close to coils, of two ends of a shaft, but the fans are firstly designed and then the shaft is machined, and some motor shafts are not provided with the fans at proper positions. Furthermore, in the air-cooled generator, a sealed circulating air cooler is used for cooling the generator set, for example, the generator set of the air cooler is arranged below, the air cooler of the generator is arranged at the bottom of the engine room of the motor, the structural form of the traditional wind driven generator is changed, the structure of the motor is more compact, the effective space in the engine room can be reasonably utilized, and the better cooling effect is achieved.

However, current air cooling generating set, motor calorific capacity is great, and especially steel works and smeltery are because the ambient temperature of itself is higher, and the operating temperature of generator can be higher when summer, and the air cooler just can't satisfy the heat dissipation demand of motor this time, and the hot-air temperature that flows from generating set via the heat exchange is too high, and the air ware can't carry out effectual cooling to hot-air, leads to the radiating effect to seriously reduce.

Disclosure of Invention

The invention provides a heat dissipation air duct structure of a generator air cooling system, and aims to solve the problem of heat dissipation of the generator air cooling system.

The invention is realized in such a way, and provides a heat dissipation air channel structure of a generator air cooling system, which comprises an air supply channel, an air return channel and a heat exchanger, wherein the air supply channel is used for conveying cold air to enter the generator; the air inlet of the heat exchanger is communicated with the air return channel, the air outlet of the heat exchanger is communicated with the air supply channel, an air exchange port is arranged on the air return channel and is communicated with the air outlet channel, and the air outlet channel is communicated with the outside; the air return duct is also provided with a fresh air port which is communicated with the fresh air duct, and an air inlet fan for feeding fresh air into the fresh air duct is arranged at the air inlet of the fresh air duct; the air outlet is far away from the air inlet of the heat exchanger compared with the position of the fresh air inlet.

Furthermore, an exhaust fan is further arranged at the outlet of the air outlet channel and used for discharging part of hot air in the air return channel to the outside.

Furthermore, the pipe diameter of the air outlet channel is smaller than that of the fresh air channel; the power of the air inlet fan is larger than that of the air exhaust fan.

Furthermore, the position of the air inlet of the new air duct is also provided with a filtering device, and the filtering device comprises a filter screen and a drying agent.

Furthermore, the outside of the new air duct is coated with a heat insulation layer.

Furthermore, the distance between the air outlet on the air return duct and the fresh air inlet is more than 0.5 m.

Furthermore, the position of the air inlet of the new air duct is arranged outside the building where the generator is located.

Compared with the prior art, the invention has the following beneficial effects: the hot air part of the generator air cooling system is discharged to the outside of the generator air cooling system, so that the temperature of hot air entering the heat exchanger is reduced; meanwhile, the fresh air system extracts external fresh air to enter the air cooling system, so that the temperature of hot air entering the heat exchanger is further reduced; the air inlet of the heat exchanger is far away from the air outlet of the air return duct, and the air inlet of the heat exchanger is close to the air return duct due to the flowing direction of the air inlet and the air outlet and the collision of cold and hot air, so that the hot air and the fresh air are fully mixed and then enter the air inlet of the heat exchanger.

Drawings

Fig. 1 is a schematic view of a heat dissipation air duct structure of an air cooling system of a generator according to the present invention.

In the figure, the air conditioner comprises a power generator 10, a power generator 11, a wall 12, an air supplement filter 13, a fan 22, a heat exchanger 23, an air supply channel 30, an air outlet channel 31, an air exhaust fan 40, a fresh air channel 41, an air inlet fan 42 and a filtering device.

Detailed Description

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

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Please refer to fig. 1, which illustrates a heat dissipation air duct structure of an air cooling system of a generator according to the present invention.

The heat dissipation air channel structure comprises an air supply channel 21 for conveying cold air into the generator 10, an air return channel 23 for outputting hot air from the generator 10, and a heat exchanger 22; wherein, the air inlet of the heat exchanger 22 is communicated with the air return duct 23, and the air outlet is communicated with the air supply duct 21. The hot air delivered from the generator 10 is cooled by the heat exchanger 22, and then the cold air is delivered back into the generator 10 through the air supply duct to cool the stator and rotor coils of the generator. Specifically, the heat exchanger 22 may be a water-cooled heat exchanger or other heat sink, and it should be understood by those skilled in the art that any cooling device capable of cooling hot air may be used as the heat exchanger 22, and is not limited in particular.

Further, in order to increase the heat dissipation performance of the generator 10, a fan may be disposed at the air blowing duct 21 or at the rotor of the generator, so as to further increase the heat exchange efficiency of the air cooling system.

Wherein, the air return duct 23 is provided with an air exchange opening (not numbered in the figure), the air exchange opening is communicated with the air outlet duct 30, and the air outlet duct 30 is communicated with the outside; for conveying a portion of the hot air to the outside of the generator, reducing the temperature of the hot air entering the heat exchanger 22.

Wherein, the return air duct 23 is further provided with a fresh air inlet (not numbered in the figure), the fresh air inlet is communicated with the fresh air duct 40, and an air inlet fan 41 for sending fresh air into the fresh air duct 40 is arranged at an air inlet (not numbered in the figure) of the fresh air duct 40; the fresh air duct 40 and the air intake fan 41 can draw and convey fresh air from outside into the air cooling system, thereby further reducing the temperature of the hot air entering the heat exchanger 22.

Wherein the outlet is located further from the inlet of the heat exchanger 22 than the fresh air inlet; because the air supply direction of the fresh air duct 40 is opposite to the air outlet direction of the air outlet duct 30, based on the flow direction of the air inlet and outlet direction and the collision of cold and hot air, a rotating air flow can be formed at the air inlet of the return air duct 23 close to the heat exchanger 22, so that hot air and fresh air are fully mixed and then enter the air inlet of the heat exchanger 22.

Furthermore, an exhaust fan 31 is further arranged at an outlet of the air outlet duct 30, and is used for discharging part of hot air in the air return duct 23 to the outside; the exhaust fan 31 can increase the hot air exhaust efficiency.

Furthermore, the pipe diameter of the air outlet duct 30 is smaller than that of the fresh air duct 40; the power of the air intake fan 41 is greater than that of the air exhaust fan 31. By designing the pipe diameters of the air outlet duct 30 and the fresh air duct 40 and the powers of the air inlet fan 41 and the air exhaust fan 31, the fresh air inlet volume can be larger than the hot air outlet volume, so that the air pressure in the generator 10 is slightly larger than the external air pressure, and the hot air in the generator is discharged outwards through each gap; meanwhile, the fresh air inlet is closer to the heat exchanger 22 than the air outlet, so that the fringe of the rotating air flow can be further increased, and the mixing of cold air and hot air is improved. Furthermore, the distance between the air outlet on the air return duct 23 and the fresh air inlet is greater than 0.5 m.

Furthermore, a filter device 42 is further disposed at the position of the air inlet of the new air duct 40, and the filter device 42 includes a filter screen and a desiccant. The filter device 42 can reduce the ingress of moisture and dust into the interior of the generator 10, protecting the useful life of the generator 10.

Furthermore, the outside of the fresh air duct 40 is covered with a heat insulation layer, so as to further ensure that the temperature of the fresh air is not affected by the temperature of the environment of the building where the generator 10 is located, because the temperature inside the building where the generator 10 is located is generally higher. Furthermore, the position of the air inlet of the new air duct is arranged outside the building where the generator is located.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.