An oil separation device

Abstract

The present invention discloses an oil distribution device, wherein the front ends of the inner and outer tubes are connected to the propeller body A by a front joint, and the rear ends are connected to the propeller body B by a rear joint; the centers of the propeller bodies A and B are provided with long-distance oil passage holes A and B connecting the inner tube and the long-distance oil passage of the propeller, and the peripheral walls of the front and rear joints are provided with fixed-distance oil passage holes A and B connecting the fixed-distance oil passage between the inner and outer tubes and the propeller; the cavity between the front and rear joints and the outer tube and the propeller bodies A and B is a small-distance oil passage connecting the propeller and the small-distance oil passage of the engine; the front joint is provided with a sealing ring at the outlet of the long-distance and fixed-distance oil passage holes A, the rear joint is provided with a sealing ring at the inlet of the long-distance and fixed-distance oil passage holes B, and a sealing ring is provided at the joint of the propeller body A itself and at the joint between it and the propeller body B. The present invention can distribute the long-distance, small-distance and fixed-distance hydraulic oil of the engine to the corresponding oil passages in the propeller, and is particularly suitable for the distribution of the internal oil passages of the propeller with a long stroke.

Description

Technical Field

[0001] The invention relates to an oil separation device for coaxial counter-rotating propellers. Background Art

[0002] A propeller is a device that converts the power of an engine into a pulling force. Due to its advantages in economy and safety, it has become the preferred propulsion system in aircraft design. Single-row propellers have low thrust and low efficiency, and can no longer meet the development needs of modern aircraft. Coaxial counter-rotating propellers eliminate reaction torque and gyroscopic torque, improve the performance of aircraft, and reduce the air swirl behind the propeller. The rotational kinetic energy generated by the front propeller can be absorbed by the rear propeller and become a forward thrust acting on the blade surface, which increases the thrust and efficiency of the propeller. However, the coaxial counter-rotating propeller consists of two rows of propellers. Due to the presence of the rear propeller, the stroke of introducing hydraulic oil to the front propeller is too long, which cannot be achieved by a single part. Therefore, it is very necessary to design an oil separation device. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems existing in the prior art and to provide an oil distribution device which can distribute the engine's long-pitch, short-pitch and fixed-pitch hydraulic oil to the corresponding oil circuits in the propeller, and is particularly suitable for the distribution of internal oil circuits of long-stroke propellers.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is: an oil distribution device, including an inner tube, a front joint, an outer tube, a propeller body A, a propeller body B whose front end is sealed and fixed to the propeller body A, and a rear joint; the inner hole of the inner tube is a large-pitch oil circuit, and the cavity between the inner tube and the outer tube is a fixed-pitch oil circuit; the front ends of the inner tube and the outer tube are connected to the propeller body A by the front joint, and the rear ends of the inner tube and the outer tube are connected to the propeller body B by the rear joint; a large-pitch oil circuit hole A connected to the large-pitch oil circuit of the inner tube and the large-pitch oil circuit of the propeller is opened in the center of the propeller body A, and a fixed-pitch oil circuit hole A connected to the fixed-pitch oil circuit between the inner and outer tubes and the fixed-pitch oil circuit of the propeller is opened on the peripheral wall of the front joint; A long-pitch oil circuit hole B connected with the long-pitch oil circuit of the inner tube and the long-pitch oil circuit of the engine is opened in the center of B, and a fixed-pitch oil circuit hole B connected with the fixed-pitch oil circuit between the inner and outer tubes and the fixed-pitch oil circuit of the engine is opened on the peripheral wall of the rear joint; the cavity between the front joint, the outer tube and the rear joint and the propeller bodies A and B is a small-pitch oil circuit, the front end of the small-pitch oil circuit is connected with the small-pitch oil circuit of the propeller, and the rear end is connected with the small-pitch oil circuit of the engine; the front joint is provided with sealing rings at the outlet of the long-pitch oil circuit hole A and the outlet of the fixed-pitch oil circuit hole A, the rear joint is provided with sealing rings at the inlet of the long-pitch oil circuit hole B and the inlet of the fixed-pitch oil circuit hole B, and sealing rings are provided at the joint of the propeller body A itself and at the joint between it and the propeller body B.

[0005] The present invention accurately distributes the long-pitch, fixed-pitch and short-pitch hydraulic oils from the engine to different intermediate pipelines through the rear joint, and accurately distributes the long-pitch, fixed-pitch and short-pitch hydraulic oils in different pipelines to the long-pitch, fixed-pitch and short-pitch oil circuits inside the propeller through the front joint. The present invention can distribute the long-pitch, small-pitch and fixed-pitch hydraulic oils of the engine to the corresponding oil circuits inside the propeller, and is particularly suitable for the distribution of the internal oil circuits of long-stroke propellers, and is easy to process. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0007] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0008] like Figure 1 As shown, this embodiment includes an inner tube 1, a front joint 2, an outer tube 3, a propeller body A4, a propeller body B5 whose front end is sealed and fixed with the propeller body A4, and a rear joint 6. The inner hole of the inner tube 1 is a long-distance oil passage 14, and the cavity between the inner tube 1 and the outer tube 3 is a fixed-distance oil passage 7. The front ends of the inner tube 1 and the outer tube 3 are connected to the propeller body A4 by the front joint 2, and the rear ends of the inner tube 1 and the outer tube 3 are connected to the propeller body B5 by the rear joint 6. A long-distance oil passage hole A9 connected to the long-distance oil passage 14 of the inner tube 1 and the propeller long-distance oil passage is opened in the center of the propeller body A4, and a fixed-distance oil passage hole A20 connected to the fixed-distance oil passage 7 between the inner and outer tubes 1 and 3 and the propeller fixed-distance oil passage is opened on the peripheral wall of the front joint 2. A long-distance oil passage hole B19 is opened in the center of the propeller body B5, which is connected to the long-distance oil passage 14 of the inner tube 1 and the long-distance oil passage of the engine. A fixed-distance oil passage hole B18 is opened on the peripheral wall of the rear joint 6, which is connected to the fixed-distance oil passage 7 between the inner and outer tubes 1 and 3 and the fixed-distance oil passage of the engine. The cavity between the front joint 2, the outer tube 3, the rear joint 6 and the propeller body A4 and B5 is a small-distance oil passage 16, the front end of which is connected to the small-distance oil passage of the propeller, and the rear end is connected to the small-distance oil passage of the engine. A sealing ring 8 is provided at the outlet of the long-distance oil passage hole A9 of the front joint 2, and two other sealing rings 11 and 12 are provided at the outlet of the fixed-distance oil passage hole A20 to ensure that there is no oil cross-talk between the long-distance, small-distance and fixed-distance hydraulic oils. The rear joint 6 is provided with sealing rings 23 and 22 at the inlet of the large-pitch oil passage hole B 19 and the fixed-pitch oil passage hole B 18, and two other sealing rings 21 and 15 are provided at the joint of the propeller body A 4 itself and the joint between it and the propeller body B 5 to ensure that there is no leakage of the small-pitch hydraulic oil. 10 is the fixed-pitch oil outlet, 13 is the small-pitch oil outlet, and 17 is the small-pitch oil inlet.

[0009] Of course, the present invention has many other embodiments. Without violating the spirit and essence of the present invention, technicians familiar with the field can make corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should be regarded as improvements of equivalent technologies and belong to the protection scope of the claims of the present invention.

Claims

1. An oil separation device, characterized in that: It comprises an inner tube, a front joint, an outer tube, a propeller body A, a propeller body B whose front end is sealed and fixed with the propeller body A, and a rear joint; the inner hole of the inner tube is a long-distance oil circuit, and the cavity between the inner tube and the outer tube is a fixed-distance oil circuit; the front ends of the inner tube and the outer tube are connected to the propeller body A by the front joint, and the rear ends of the inner tube and the outer tube are connected to the propeller body B by the rear joint; a long-distance oil circuit hole A connected with the long-distance oil circuit of the inner tube and the long-distance oil circuit of the propeller is opened in the center of the propeller body A, and a fixed-distance oil circuit hole A connected with the fixed-distance oil circuit between the inner and outer tubes and the fixed-distance oil circuit of the propeller is opened on the peripheral wall of the front joint; a long-distance oil circuit hole A connected with the long-distance oil circuit of the inner tube and the fixed-distance oil circuit of the propeller is opened in the center of the propeller body B A long-pitch oil circuit hole B connected to the long-pitch oil circuit of the engine is provided on the peripheral wall of the rear joint with a fixed-pitch oil circuit hole B connected to the fixed-pitch oil circuit between the inner and outer tubes and the fixed-pitch oil circuit of the engine; the cavity between the front joint, the outer tube and the rear joint and the propeller bodies A and B is a small-pitch oil circuit, the front end of the small-pitch oil circuit is connected to the small-pitch oil circuit of the propeller, and the rear end is connected to the small-pitch oil circuit of the engine; the front joint is provided with sealing rings at the outlet of the long-pitch oil circuit hole A and the outlet of the fixed-pitch oil circuit hole A, the rear joint is provided with sealing rings at the inlet of the long-pitch oil circuit hole B and the inlet of the fixed-pitch oil circuit hole B, and sealing rings are provided at the joint of the propeller body A itself and at the joint between it and the propeller body B.

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