Cooling structure of full-power-generation oil-electricity hybrid power system

Abstract

The utility model discloses a cooling structure of a full power generation oil-electricity hybrid power system, which comprises an air duct cover body, the air duct cover body is connected with an engine, the air duct cover body and the engine are encircled to form an air duct, a cylinder body of the engine is positioned in the air duct, and one end of the air duct is provided with a duct fan; the independent air duct is designed on the periphery of the engine cylinder body, the ducted fan is arranged at one end of the air duct, and the ducted fan is large in air speed and small in size and meets the heat dissipation requirement and the installation requirement. When the ducted fan works, airflow enters the air duct from the air inlet end above the air duct and then is exhausted through the ducted fan at the air outlet end below the air duct, and in the process, the airflow passing through the air duct exchanges heat with the engine cylinder body to take away heat generated by the engine cylinder body, so that the engine cylinder body is cooled; and the temperature of an engine cylinder body is lower than the maximum allowable temperature 200 DEG C of the engine, and the actual use requirement is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cooling structure of full power generation oil-electric hybrid power system belongs to unmanned aerial vehicle power system technical field. BACKGROUND

[0002] 30kw level full power generation oil-electric hybrid power system is constituted by engine and 30kw generator in matching;Wherein the power generated by the engine cylinder combustion is converted into effective mechanical power, and the rest of the power is taken away and consumed through the tail gas, the engine body and the engine cooling system;If the generator power is 20kw, the input power of the engine is 23.5kw, and the heat consumption of the four cylinder bodies of the engine is 45.28kw;The existing axial flow fan has small air volume, and cannot meet the normal heat dissipation demand, the maximum temperature of the system can reach 572 DEG C, and the temperature value of the engine cylinder is far higher than the allowable temperature value 200 DEG C of the engine, through estimation and fan installation demand (need to be installed on the engine cylinder), the finished axial flow fan cannot meet the actual use demand, and the required wind speed and the required fan volume are not matched. SUMMARY

[0003] In order to solve the deficiency of prior art, the utility model provides a cooling structure of full power generation oil-electric hybrid power system.

[0004] The technical scheme adopted by the utility model is as follows:

[0005] The cooling structure of full power generation oil-electric hybrid power system, including the air duct cover body, the air duct cover body is connected with the engine, the air duct cover body and the engine enclosure region constitute the air duct, and the cylinder body of the engine is located in the air duct, and the ducted fan is arranged at one end of the air duct.

[0006] As the preferred embodiment of the utility model, the plurality of cylinder bodies located at the same side of the engine share one air duct cover body.

[0007] As the preferred embodiment of the utility model, the number of the ducted fan is consistent with the number of the engine cylinder body, and the installation position of the ducted fan corresponds to the position of the engine cylinder body.

[0008] As the preferred embodiment of the utility model, the ducted fan is connected with the air duct cover body through the support.

[0009] As the preferred embodiment of the utility model, the air duct cover body is composed of metal material.

[0010] As the preferred embodiment of the utility model, the inner wall surface of the air duct cover body is in contact with the fin of the engine cylinder.

[0011] The air inlet end of the air duct is located at the upper side, and the air outlet end is located at the lower side.

[0012] The internal space of the air duct gradually narrows from the air inlet end to the air outlet end.

[0013] The utility model discloses the beneficial effect that:

[0014] The independent air duct is designed in the periphery of the engine cylinder body, and the duct fan is arranged at one end of the air duct, the air speed of the duct fan is big, and the volume is small, and the heat dissipation requirement and the installation requirement are satisfied, when the duct fan works, the airflow enters the air duct from the air inlet end of the upper side of the air duct, and then is discharged through the duct fan of the air outlet end of the lower side of the air duct, in this process, the airflow passing through the air duct exchanges heat with the engine cylinder body, and the heat generated by the engine cylinder body is taken away, thereby cooling the engine cylinder body, the temperature of the engine cylinder body is lower than the maximum allowable temperature of the engine 200 DEG C, and the actual use demand is satisfied. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure schematic of the utility model Figure One ;

[0016] Figure 2 It is the structure schematic of the utility model Figure Two ;

[0017] Figure 3 It is the structure schematic of the utility model Figure Three ;

[0018] Meaning of the reference signs in the drawing:

[0019] 1-air duct cover, 2-engine, 3-cylinder body, 4-duct fan, 5-bracket. DETAILED DESCRIPTION

[0020] The utility model is specifically introduced below in connection with the drawings and specific embodiments.

[0021] As Figures 1-3 shown, the embodiment is a cooling structure of full power generation oil-electric hybrid power system, including air duct cover 1, air duct cover 1 and engine 2 are detachably connected, and the air duct cover 1 and engine 2 are connected to form the air duct, i.e. airflow passage, and the cylinder body 3 of the engine 2 is located in the air duct, and the duct fan 4 is arranged at one end of the air duct, and the duct fan 4 is connected with the air duct cover 1 through the bracket 5, facilitating the installation and later maintenance of the duct fan 4.

[0022] In this embodiment, the engine 2 has four cylinders 3, which are evenly distributed on both sides of the engine 2. The two cylinders 3 located on the same side of the engine 2 share an air duct cover 1, and two ducted fans 4 are arranged at one end of the air duct, and the two ducted fans 4 correspond to the two cylinders 3 respectively; in actual application, multiple cylinders 3 located on the same side of the engine 2 can share an air duct cover 1, the number of ducted fans 4 is consistent with the number of cylinders 3 of the engine 2, and the installation position of the ducted fan 4 corresponds to the position of the cylinder 3 of the engine 2.

[0023] In this embodiment, the air duct cover 1 is made of metal material, such as metal aluminum material; the inner wall surface of the air duct cover 1 is in contact with the fins of the engine 2 cylinder block 3, forming heat transfer, so that the air duct cover 1 participates in heat dissipation, improves the heat dissipation effect, and can reduce the space occupied by the air duct cover 1.

[0024] In this embodiment, the air inlet end of the air duct is located at the top and the air outlet end is located at the bottom. The duct fan 4 is arranged at the air outlet end of the air duct. The air duct cover 1 is arranged according to the shape of the engine 2. The internal space of the air duct gradually shrinks from the air inlet end to the air outlet end, further reducing the overall external dimensions.

[0025] When the ducted fan 4 is working, the air flow enters the air duct from the air inlet end above the air duct, and is then discharged through the ducted fan 4 at the air outlet end below the air duct. During this process, the air flow passing through the air duct exchanges heat with the engine 2 cylinder body 3, taking away the heat generated by the engine 2 cylinder body 3, thereby cooling the engine 2 cylinder body 3.

[0026] This embodiment was tested in a laboratory for a 20 kW power generation capacity. The four cylinders 3 of the engine 2 were located on both sides of the engine 2. Independent air ducts and ducted fans 4 were designed on both sides of the engine 2. The cylinders 3 of the engine 2 were located in the air ducts. The inner wall of the air duct cover 1 forming the air duct was closely fitted to the fins of the cylinders 3 of the engine 2 as much as possible. Each cylinder 3 corresponded to a ducted fan 4, for a total of four ducted fans 4. The full power of each ducted fan 4 was 1.728 kW.

[0027] When the test load reaches 20kw, the "throttle" of the four ducted fans 4 reaches 90%, the power value of a single ducted fan 4 is 1.6kw, and the maximum temperature of the engine 2 cylinder 3 is 180.3°C, which is lower than the maximum allowable temperature of the engine 2 of 200°C, meeting the actual use requirements; because it is carried out in a relatively closed laboratory test room, as the ambient temperature of the test room rises, the temperature of the engine 2 cylinder 3 will become higher. If it is in an open air environment with propellers, the temperature of the engine 2 cylinder 3 will decrease to a certain extent.

[0028] In the description of the utility model, need understanding is: The orientation or positional relation indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are all based on the orientation or positional relation shown in the drawings, and are only for the convenience of describing the utility model, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore can not be understood as limiting the utility model.

[0029] In the description of the utility model, it should be explained that: unless otherwise expressly specified and limited, the terms "mounting", "connecting", "setting", "forming" should be broadly understood;For example: it can be fixedly connected, set, or can be detachably connected, set, or be of an integral structure;It can be mechanically connected, or electrically connected;It can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements internally;For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] The above examples are only used to illustrate the technical scheme of the utility model, and those skilled in the art should understand that the above examples do not limit the utility model in any form, and any technical scheme obtained by equivalent replacement or equivalent transformation falls within the protection scope of the utility model.

Claims

1. The cooling structure of the full electric hybrid system is characterized by: The air duct cover comprises an air duct cover body, which is connected to the engine. The air duct cover body and the engine enclose an area to form an air duct. The cylinder body of the engine is located in the air duct. A ducted fan is arranged at one end of the air duct.

2. The cooling structure of the all-electric hybrid power system according to claim 1, characterized in that: Multiple cylinder blocks located on the same side of the engine share one air duct cover.

3. The cooling structure of the full power generation oil-electric hybrid system according to claim 1 or 2, characterized in that: The number of the ducted fans is consistent with the number of the engine cylinders, and the installation positions of the ducted fans correspond to the positions of the engine cylinders.

4. The cooling structure of the all-electric hybrid power system according to claim 3, characterized in that: The duct fan is connected to the air duct cover through a bracket.

5. The cooling structure of the full electric power generation hybrid power system according to any one of claims 1, 2 and 4, characterized in that: The air duct cover is made of metal material.

6. The cooling structure of the all-electric hybrid power system according to claim 5, characterized in that: The inner wall surface of the air duct cover is in close contact with the fins of the engine cylinder block.

7. The cooling structure of the all-electric hybrid power system according to claim 1, characterized in that: The air inlet end of the air duct is located at the top, and the air outlet end is located at the bottom, and the duct fan is arranged at the air outlet end of the air duct.

8. The cooling structure of the all-electric hybrid power system according to claim 7, characterized in that: The internal space of the air duct gradually decreases from the air inlet end to the air outlet end.

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