阅读说明：本技术 一种航空发动机滑油箱 (Aircraft engine lubricating oil tank ) 是由 王世娇 王海峰 朱建华 章晓眉 戴敏 姚惠怡 于 2021-01-13 设计创作，主要内容包括：公开的一种航空发动机滑油箱,包括内壁、外壁以及端盖,内壁、外壁配合端盖形成密封的油腔,内壁呈圆筒状,内壁均布有向内延伸的翅片,翅片形成换热腔,换热腔与油腔相通,翅片沿内壁的轴线方向设置,相邻两条翅片之间形成冷却通道,在油腔内设置有换热器,换热器具有气流通道,气流通道在换热器的两端形成开口,开口与外界相通,空气经其中一个开口流入气流通道。本方案通过设置翅片以及换热腔,大大提高了滑油与翅片的换热能力,进而可以有效地提高滑油箱的冷却性能。而换热器以及气流通道的设置,使得航空器飞行过程中的气流通过气流通道、换热器与油腔内的滑油进行热交换,进一步提高了滑油腔的滑油冷却能力。(The disclosed aeroengine lubricating oil tank comprises an inner wall, an outer wall and end covers, wherein the inner wall and the outer wall are matched with the end covers to form a sealed oil cavity, the inner wall is cylindrical, fins extending inwards are uniformly distributed on the inner wall, the fins form a heat exchange cavity, the heat exchange cavity is communicated with the oil cavity, the fins are arranged along the axis direction of the inner wall, a cooling channel is formed between every two adjacent fins, a heat exchanger is arranged in the oil cavity, the heat exchanger is provided with an airflow channel, openings are formed in the two ends of the heat exchanger through the airflow channel, the openings are communicated with the outside, and air flows into. According to the scheme, the fins and the heat exchange cavity are arranged, so that the heat exchange capacity of the lubricating oil and the fins is greatly improved, and the cooling performance of the lubricating oil tank can be effectively improved. And the heat exchanger and the airflow channel are arranged, so that the airflow in the flying process of the aircraft exchanges heat with the lubricating oil in the oil cavity through the airflow channel and the heat exchanger, and the lubricating oil cooling capacity of the lubricating oil cavity is further improved.)

1. The utility model provides an aeroengine lubricating oil case, includes inner wall (1), outer wall (2) and end cover (3), inner wall (1) outer wall (2) cooperation end cover (3) form sealed oil pocket (4), its characterized in that: the inner wall (1) is cylindrical, fins (5) extending inwards are uniformly distributed on the inner wall (1), a heat exchange cavity (6) is formed by the fins (5), the heat exchange cavity (6) is communicated with the oil cavity (4), the fins (5) are arranged along the axis direction of the inner wall (1), a cooling channel is formed between every two adjacent fins (5), air flows through the cooling channel and completes heat exchange with the fins (5), the fins (5) and lubricating oil in the heat exchange cavity (6) perform heat exchange to cool the lubricating oil, a heat exchanger (7) is arranged in the oil cavity (4), the heat exchanger (7) is provided with an air flow channel (8), the air flow channel (8) penetrates through the heat exchanger (7), in addition, openings are formed at the two ends of the heat exchanger (7) and are communicated with the outside, air flows into the airflow channel (8) through one of the openings, the air in the airflow channel (8) exchanges heat with the heat exchanger (7), and the heat exchanger (7) exchanges heat with lubricating oil in the oil cavity (4) to cool the lubricating oil in the oil cavity (4).

2. The aircraft engine fuel tank of claim 1, wherein: the cross section of the heat exchange cavity (6) is arc-shaped, and the heat exchange cavity (6) and the inner wall (1) are in smooth transition, so that lubricating oil in the heat exchange cavity (6) can enter the oil cavity (4) under the action of external force.

3. The aircraft engine fuel tank of claim 2, wherein: each heat exchanger (7) is arranged corresponding to a different heat exchange cavity (6), and the axis of each heat exchanger (7) is parallel to the axis of the corresponding heat exchange cavity (6) of the heat exchanger (7).

4. An aircraft engine lubricating oil tank according to claim 3, characterised in that: the fin (5) and the inner wall (1) are of an integrated structure, the thickness of the fin (5) is smaller than that of the inner wall (1), and the thickness of the fin (5) is not smaller than half of that of the inner wall (1).

5. The aircraft engine fuel tank of claim 4, wherein: the heat exchanger (7) is evenly provided with heat exchange sheets (9), the heat exchange sheets (9) extend into the oil cavity (4), and the heat exchange sheets (9) and the heat exchanger (7) are of an integrated structure.

6. The aircraft engine fuel tank of claim 5, wherein: the heat exchange plate (9) is provided with a cavity (10), the cavity (10) is communicated with the airflow channel (8), and a part of air flowing through the airflow channel (8) enters the cavity (10) to exchange heat with the heat exchange plate (9).

7. The aircraft engine fuel tank of claim 6, wherein: the heat exchanger (7) is provided with a guide part (11), the guide part (11) guides outside air into the airflow channel (8), the guide part (11) is a chamfer arranged at the opening, and the chamfer is a fillet.

8. The aircraft engine fuel tank of claim 7, wherein: the heat exchanger (7) and at least one end cover (3) are of an integrated structure, and the overall diameter of the heat exchanger (7) is not larger than the distance between the inner wall (1) and the outer wall (2) so as to enable lubricating oil between the three adjacent heat exchangers (7) to be communicated.

9. The aircraft engine fuel tank of claim 8, wherein: the inner wall (1), the outer wall (2) and at least one end cover (3) are of an integrated structure.

10. The aircraft engine fuel tank of claim 9, wherein: the oil cavity (4) is arranged on the outer wall (2), the radiating fins extend in the direction far away from the oil cavity (4), and the radiating fins and the outer wall (2) are of an integrated structure.

Technical Field

The disclosure relates to the technical field of oil tank accessories of aero-engines, in particular to an aero-engine lubricating oil tank.

Background

The main function of an aircraft engine oil system is to supply oil continuously or intermittently to the moving parts of the engine to slow down the wear of the parts, extend the useful life of the parts, and carry away the heat generated by the parts. The main function of the aeroengine lubricating oil tank is to store lubricating oil.

In the prior art, the lubricating function of an aero-engine lubricating oil system can meet the requirement of an aero-engine, but the working condition of the aero-engine is quite severe, and the heat dissipation capacity of the aero-engine lubricating oil system in the prior art is poor, that is to say, the aero-engine lubricating oil system in the prior art cannot effectively cool lubricating oil so as to meet the cooling function of the aero-engine lubricating oil system.

Disclosure of Invention

The utility model provides an aeroengine lubricating oil tank has solved the technical problem that aeroengine lubricating oil tank structure is unreasonable among the prior art, and the heat dissipation is poor.

Some embodiments adopted to solve the above technical problems include:

the utility model provides an aeroengine lubricating oil tank, includes inner wall, outer wall and end cover, the inner wall, the outer wall cooperation the end cover forms sealed oil pocket, the inner wall is cylindricly, the inner wall equipartition has the fin of inside extension, the fin forms the heat transfer chamber, the heat transfer chamber with the oil pocket communicates with each other, the fin is followed the axis direction setting of inner wall, adjacent two form cooling channel between the fin, the air flows through cooling channel and with the fin accomplishes the heat exchange, the fin with lubricating oil in the heat transfer chamber carries out the heat exchange in order to cool off lubricating oil, be provided with the heat exchanger in the oil pocket, the heat exchanger has airflow channel, airflow channel runs through the heat exchanger, and, airflow channel forms the opening at the both ends of heat exchanger, the opening communicates with each other with the external world, and the air flows in through one of them opening airflow channel, and the air in the airflow channel exchanges heat with the heat exchanger, and the heat exchanger exchanges heat with the lubricating oil in the oil cavity to cool the lubricating oil in the oil cavity.

Preferably, the cross section of the heat exchange cavity is arc-shaped, and the heat exchange cavity and the inner wall are in smooth transition, so that lubricating oil in the heat exchange cavity can enter the oil cavity under the action of external force.

In this scheme, the lubricating oil in the heat transfer intracavity mixes with the lubricating oil in the oil chamber more easily to reduced the temperature of lubricating oil in the oil chamber effectively, optimized the lubricating oil cooling performance of lubricating oil tank.

Preferably, each heat exchanger is arranged corresponding to a different heat exchange cavity, and the axis of the heat exchanger is parallel to the axis of the heat exchange cavity corresponding to the heat exchanger.

In this scheme, have bigger clearance between heat exchanger and the inner wall to be favorable to the flow of the interior lubricating oil of oil pocket, the oil temperature is even in the oil pocket.

Preferably, the fin and the inner wall are of an integral structure, the thickness of the fin is smaller than that of the inner wall, and the thickness of the fin is not smaller than half of the thickness of the inner wall.

In this scheme, inner wall rational in infrastructure, the lubricating oil tank is difficult for revealing, has optimized the stability of lubricating oil tank.

Preferably, the heat exchanger is uniformly provided with heat exchange sheets, the heat exchange sheets extend into the oil cavity, and the heat exchange sheets and the heat exchanger are of an integrated structure.

In this scheme, the heat exchange fin set up the area of contact that has increased heat exchanger and lubricating oil, has improved the heat transfer ability of heat exchanger.

Preferably, the heat exchange fin has a cavity, the cavity is communicated with the airflow channel, and a part of air flowing through the airflow channel enters the cavity to exchange heat with the heat exchange fin.

In this scheme, the setting of cavity has increased the area of contact of heat exchanger with the air, has optimized the heat transfer ability of heat exchanger.

Preferably, the heat exchanger is provided with a guide portion, the guide portion guides outside air into the airflow channel, the guide portion is a chamfer arranged at the opening, and the chamfer is a fillet.

In this scheme, the setting of guide part makes in the air changes gets into airflow channel, has optimized the heat transfer ability of heat exchanger.

Preferably, the heat exchanger and at least one end cover are of an integral structure, and the overall diameter of the heat exchanger is not larger than the distance between the inner wall and the outer wall, so that lubricating oil between every two adjacent heat exchangers is communicated.

In this scheme, the lubricating oil tank is rational in infrastructure, is difficult for revealing, has improved the stability in the lubricating oil tank course of operation.

Preferably, the inner wall, the outer wall and at least one end cap are of an integral structure.

In this scheme, the lubricating oil tank is rational in infrastructure, and difficult the leakage has improved the stability in the lubricating oil tank working process.

Preferably, the outer wall is provided with a cooling fin, the cooling fin extends towards the direction far away from the oil cavity, and the cooling fin and the outer wall are of an integrated structure.

In this scheme, the cooling capacity of lubricating oil tank has further been improved in the setting of fin, has optimized aeroengine lubricating oil system's performance.

Compared with the prior art, the aeroengine lubricating oil tank provided by the disclosure has the following advantages:

the disclosed aeroengine lubricating oil tank comprises an inner wall, an outer wall and an end cover, wherein the inner wall and the outer wall are matched with the end cover to form a sealed oil cavity, the inner wall is cylindrical, fins extending inwards are uniformly distributed on the inner wall, the fins form a heat exchange cavity, the heat exchange cavity is communicated with the oil cavity, the fins are arranged along the axial direction of the inner wall, a cooling channel is formed between every two adjacent fins, air flows through the cooling channel and completes heat exchange with the fins, the fins perform heat exchange with lubricating oil in the heat exchange cavity to cool the lubricating oil, a heat exchanger is arranged in the oil cavity, the heat exchanger is provided with an airflow channel, the airflow channel penetrates through the heat exchanger, and the airflow channel forms openings at two ends of the heat exchanger, the openings are communicated with the outside, air flows into the airflow channel through one of the openings, the air in the airflow channel exchanges heat with the heat exchanger, and the heat exchanger exchanges heat with the lubricating oil in the oil cavity to cool the lubricating oil in the oil cavity. According to the scheme, the fins and the heat exchange cavity are arranged, so that the heat exchange capacity of the lubricating oil and the fins is greatly improved, and the cooling performance of the lubricating oil tank can be effectively improved. And the heat exchanger and the airflow channel are arranged, so that the airflow in the flying process of the aircraft exchanges heat with the lubricating oil in the oil cavity through the airflow channel and the heat exchanger, and the lubricating oil cooling capacity of the lubricating oil cavity is further improved.

Drawings

For purposes of explanation, several embodiments of the disclosed technology are set forth in the following figures. The following drawings are incorporated herein and constitute a part of the detailed description. In some instances, well-known structures and components are shown in block diagram form in order to avoid obscuring the concepts of the disclosed subject technology.

Fig. 1 is a schematic view of the present disclosure in a first direction.

Fig. 2 is a schematic view of the present disclosure in a second orientation.

Fig. 3 is a schematic view of the internal structure of the present disclosure in a first direction.

Fig. 4 is a schematic view of the internal structure of the present disclosure in a second orientation.

Fig. 5 is a schematic view of the internal structure of the heat exchanger in a first direction.

Fig. 6 is a schematic view of the internal structure of the heat exchanger in a second orientation.

In the figure, the heat exchanger comprises a shell, an inner wall, an outer wall, an end cover, an oil cavity, a fin, a heat exchange cavity, a heat exchanger, a heat exchange fin, a heat exchanger, an airflow channel, a heat exchange fin, a cavity, a guide portion and an.

Detailed Description

The specific embodiments illustrated below are intended as descriptions of various configurations of the presently disclosed subject technology and are not intended to represent the only configurations in which the presently disclosed subject technology may be practiced. Specific embodiments include specific details for the purpose of providing a thorough understanding of the presently disclosed subject matter technology. It will be apparent, however, to one skilled in the art that the disclosed subject matter technology is not limited to the specific details shown herein and may be practiced without these specific details.

Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, an aircraft engine lubricating oil tank includes an inner wall 1, an outer wall 2 and an end cover 3, the inner wall 1 and the outer wall 2 cooperate with the end cover 3 to form a sealed oil cavity 4, the inner wall 1 is cylindrical, fins 5 extending inwards are uniformly distributed on the inner wall 1, the fins 5 form a heat exchange cavity 6, the heat exchange cavity 6 is communicated with the oil cavity 4, the fins 5 are arranged along the axial direction of the inner wall 1, a cooling channel is formed between two adjacent fins 5, air flows through the cooling channel and completes heat exchange with the fins 5, the fins 5 perform heat exchange with lubricating oil in the heat exchange cavity 6 to cool the lubricating oil, a heat exchanger 7 is arranged in the oil cavity 4, the heat exchanger 7 is provided with an air flow channel 8, and the air flow channel 8 penetrates through the heat exchanger 7, the air flow channel 8 forms openings at two ends of the heat exchanger 7, the openings are communicated with the outside, air flows into the air flow channel 8 through one of the openings, the air in the air flow channel 8 exchanges heat with the heat exchanger 7, and the heat exchanger 7 exchanges heat with the lubricating oil in the oil chamber 4 to cool the lubricating oil in the oil chamber 4.

In this embodiment, the fuel tank is disposed in the casing of the aircraft engine, and surrounds or at least partially surrounds the casing. One of the openings of the heat exchanger 7 is directed in the direction of flight of the aircraft during flight of the aircraft. During flight of the aircraft, air at the front of the aircraft enters the airflow channel 8 through the opening, and then exchanges heat with the lubricating oil in the oil chamber 4 through the heat exchanger 7. The air flow after the heat exchange is discharged through the other opening of the heat exchanger 7.

Thus, in practice, the axis of the airflow passage 8 may be straight or curved. As for the air flow path 8, the longer the length of the air flow path 8, the better the heat exchange capability, and the axis of the air flow path 8 is generally a straight line or a wavy line in consideration of the volume of the lubricant tank and the difficulty in processing the air flow path 8. Although the present disclosure describes the shape of the axis of the air flow channel 8, this description is only for the purpose of making the understanding of those skilled in the art easier, and it is not intended to express or imply that the air flow channel 8 in question must be configured or constructed with a specific shape of the axis, and therefore, should not be construed as limiting the scope of the present disclosure.

In some embodiments, the cross-sectional shape of the heat exchange cavity 6 is arc-shaped, and the heat exchange cavity 6 and the inner wall 1 are in smooth transition, so that lubricating oil in the heat exchange cavity 6 can enter the oil cavity 4 under the action of external force.

Each heat exchanger 7 is arranged corresponding to a different heat exchange cavity 6, and the axis of each heat exchanger 7 is parallel to the axis of the corresponding heat exchange cavity 6 of the heat exchanger 7.

The heat exchanger 7 of the lubricating oil tank is located in the oil chamber 4, while the amount of lubricating oil stored in the oil chamber 4 fluctuates over a certain range or a certain range. That is, the oil inside the oil chamber 4 can flow at any position inside the oil chamber 4 to accomplish heat exchange at different positions, making the temperature of the oil inside the oil chamber 4 uniform.

In the present embodiment, the cross-sectional shape of the heat exchange chamber 6 and the arrangement position of the heat exchanger 7 are both designed to allow the oil to flow at any position in the oil chamber 4, or to facilitate the oil to flow at any position in the oil chamber 4, so that the temperature of the oil in the oil chamber 4 is uniform.

In some embodiments, the fins 5 are of a unitary structure with the inner wall 1, the thickness of the fins 5 is less than the thickness of the inner wall 1, and the thickness of the fins 5 is not less than half of the thickness of the inner wall 1.

The heat exchanger 7 is uniformly provided with heat exchange sheets 9, the heat exchange sheets 9 extend into the oil cavity 4, and the heat exchange sheets 9 and the heat exchanger 7 are of an integrated structure.

The heat exchange fin 9 is provided with a cavity 10, the cavity 10 is communicated with the airflow channel 8, and a part of air flowing through the airflow channel 8 enters the cavity 10 to exchange heat with the heat exchange fin 9.

The heat exchanger 7 is provided with a guide part 11, the guide part 11 guides outside air into the airflow channel 8, the guide part 11 is a chamfer arranged at the opening, and the chamfer is a fillet.

In some embodiments, the heat exchanger 7 and at least one end cover 3 are of an integral structure, and the overall diameter of the heat exchanger 7 is not larger than the distance between the inner wall 1 and the outer wall 2, so that lubricating oil between three adjacent heat exchangers 7 is communicated.

The inner wall 1, the outer wall 2 and at least one end cover 3 are of an integrated structure.

The outer wall 2 is provided with a radiating fin, the radiating fin extends towards the direction far away from the oil cavity 4, and the radiating fin and the outer wall 2 are of an integrated structure.

The radiating fins, the outer wall 2 and the inner wall 1 are made of materials with good heat conducting performance, so that the heat radiating capacity of the lubricating oil cavity 4 is further improved.

While the subject matter of the present disclosure and its corresponding details have been described above, it is to be understood that the above description is only illustrative of some embodiments of the subject matter of the present disclosure and that some of the details may be omitted from the detailed description.

In addition, in some of the embodiments disclosed above, there is a possibility that a plurality of embodiments may be combined and implemented, and various combinations are not listed at length. The implementation embodiments can be freely combined according to the requirements when the technical personnel in the field carry out the implementation so as to obtain better application experience.

Other configurations of details or figures may be derived by those skilled in the art in practicing the presently disclosed subject matter, as well as figures, and it will be apparent that such details are within the scope of the presently disclosed subject matter and are covered by the presently disclosed subject matter without departing from the presently disclosed subject matter.