A hot air heating type anti-icing system for an anti-icing cap cover in all time periods

Abstract

The application discloses a hot-air heating type anti-icing system for an anti-icing cap cover in a full period, comprising: a hot-air heating type anti-icing system for sealing rotation and compensation of corner displacement difference. Since the anti-icing air guide pipe is rotatably connected with the fan shaft and the anti-icing cap cover through the sealing ring A and the sealing ring B at both ends, when the corner displacement difference occurs, the anti-icing air guide pipe is sealed and rotated relative to the anti-icing cap cover through the sealing ring A for compensation, so that the torque caused by the corner displacement difference is avoided, and the problem that the anti-icing air guide pipe and the anti-icing cap cover are fixedly connected and fail due to the torque caused by the corner displacement difference of the anti-icing air guide pipe fixed on the anti-icing cap cover is solved.

Description

Technical Field

[0001] This invention relates to a hot air heating anti-icing system for all-time anti-icing of a rectifier cap, belonging to the field of anti-icing technology for aero engines. Background Technology

[0002] The fairing at the engine inlet plays a role in rectifying the airflow at the engine intake. When the engine operates under icing weather conditions, ice may form on the fairing. Once icing occurs, the fairing's rectifying function is affected, potentially causing airflow distortion. As the ice continues to accumulate, under engine vibration or other external forces, chunks of ice may break off and enter the engine flow channels, damaging the blades and causing serious malfunctions. Therefore, it is necessary to prevent icing on the fairing.

[0003] Existing rectifier caps prevent icing. For example, Chinese Patent Publication No. CN216077334U discloses a rectifier cap with multiple through holes on its protruding front surface and an anti-icing air duct fixedly connected at one end to the protruding front of the rectifier cap. Although the anti-icing air duct can guide hot air to the through holes of the rectifier cap for de-icing, since the anti-icing air duct is fixed to the rectifier cap, when they rotate together and there is a difference in angular displacement, the torque generated by the difference in angular displacement can cause the fixed connection between the anti-icing air duct and the rectifier cap to fail. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a hot air heating anti-icing system for rectifier caps to prevent icing at all times.

[0005] The present invention is achieved through the following technical solutions.

[0006] This invention provides a hot-air heated anti-icing system for rectifier caps that provides all-time anti-icing, comprising:

[0007] A hot-air heated anti-icing system that compensates for angular displacement differences by sealing and rotating.

[0008] Since the anti-icing air duct is rotatably connected to the fan shaft and rectifier cap at both ends via sealing rings A and B, when there is a difference in angular displacement, the anti-icing air duct compensates by rotating relative to the rectifier cap through sealing ring A, thus avoiding the torque generated by the difference in angular displacement. This solves the problem of failure of the fixed connection between the anti-icing air duct and the rectifier cap due to the torque generated by the difference in angular displacement when the anti-icing air duct is fixed to the rectifier cap.

[0009] Includes: a fan shaft, on which vents are provided for the hot air after compression and heating to pass through;

[0010] The interior is a hollow anti-icing air duct, and the anti-icing air duct is equipped with a groove for mounting a sealing ring B that can be rotatably and sealed to the fan shaft;

[0011] It also includes a first-stage fan rotor, a first-stage fan rectifier, and a second-stage fan rotor that heat and pressurize the incoming airflow. The first-stage fan rotor, the first-stage fan rectifier, and the second-stage fan rotor are fixed on the fan shaft.

[0012] The first-stage fan rotor is in front of the first-stage fan rectifier; the first-stage fan rectifier is in front of the second-stage fan rotor.

[0013] The rectifier cap is fixedly connected to the first-stage fan rotor.

[0014] The second-stage fan rotor grate extension arm is provided with airflow holes that allow air to flow into the fan shaft ventilation holes.

[0015] It also includes a second-stage fan rectifier that is rotatably mounted to the fan shaft via bearings.

[0016] The second-stage fan rectifier and the second-stage fan rotor are sealed off from the airflow by a grate sealing structure.

[0017] The outer surface of the rectifier cap is coated with epoxy enamel paint to achieve partial waterproofing.

[0018] The beneficial effects of this invention are as follows: the rectifier cap can be rotated by the fan shaft; the anti-icing air duct is provided with a groove for mounting a sealing ring A and can be rotatably and sealed to the rectifier cap; the rectifier cap is provided with a hot air passage for de-icing; the two ends of the anti-icing air duct are correspondingly connected to the vent of the fan shaft and the hot air passage of the rectifier cap, so that the compressed and heated hot air is discharged from the vent of the fan shaft through the rotatable anti-icing air duct and through the hot air passage of the rectifier cap. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a symmetrical half-section of the present invention;

[0020] In the diagram: 1-rectifier cap; 2-sealing ring A; 3-anti-icing air intake pipe; 4-sealing ring B; 5-fan shaft; 6-first-stage fan rotor; 7-first-stage fan rectifier; 8-second-stage fan rotor; 9-second-stage fan rectifier. Detailed Implementation

[0021] The technical solution of the present invention is further described below, but the scope of protection is not limited to what is described.

[0022] like Figure 1 As shown.

[0023] This application discloses a hot-air heated anti-icing system for a rectifier cap that provides all-time anti-icing, comprising:

[0024] A fan shaft 5 provides rotational power, and a vent is provided on the fan shaft 5 to allow the compressed and heated hot air to pass in.

[0025] The interior is a hollow anti-icing air duct 3. The anti-icing air duct 3 is provided with a groove for mounting a sealing ring B4 and a fan shaft 5 for rotatable sealing installation.

[0026] A rectifier cap 1, rotatable by a fan shaft 5, is mounted on an anti-icing air duct 3 with a groove for installing a sealing ring A2, allowing for rotatable sealing with the rectifier cap 1. The rectifier cap 1 has a hot air passage for de-icing. The anti-icing air duct 3 connects at both ends to the vent holes of the fan shaft 5 and the hot air passage holes of the rectifier cap 1, allowing compressed and heated air to be discharged from the vent holes of the fan shaft 5 through the rotatable anti-icing air duct 3 and then through the hot air passage holes of the rectifier cap 1, achieving the functions of melting, de-icing, and preventing icing. The outer surface of the rectifier cap 1 is coated with epoxy enamel for partial waterproofing. The inner surface of the rectifier cap 1 extends to the outside of the anti-icing air duct 3, forming an inlet airflow chamber. The interior space of the anti-icing air duct 3 is an anti-icing hot air chamber, and the anti-icing air duct 3 seals and separates the inlet airflow chamber and the anti-icing hot air chamber to prevent leakage and mixing.

[0027] The fan shaft 5 is fixedly connected to a first-stage fan rotor 6, a first-stage fan rectifier 7, and a second-stage fan rotor 8. The first-stage fan rotor 6 is in front of the first-stage fan rectifier 7, and the first-stage fan rectifier 7 is in front of the second-stage fan rotor 8. The three components heat and pressurize the inlet airflow so that the inlet airflow reaches the temperature requirements of the anti-icing hot air and has sufficient air pressure to push the anti-icing hot air towards the rectifier cap.

[0028] The rectifier cap 1 is fixedly connected to the first-stage fan rotor 6, thereby achieving a fixed connection between the rectifier cap 1 and the fan shaft 5, so that the fan shaft 5 drives the rectifier cap 1 to rotate.

[0029] The second-stage fan rotor 8 has airflow holes on its grate extension arm to allow airflow into the ventilation holes of the fan shaft 5.

[0030] It also includes a second-stage fan rectifier 9 that is rotatably mounted to the fan shaft 5 via bearings; the second-stage fan rectifier 9 and the second-stage fan rotor 8 are sealed off from the airflow by a grate sealing structure.

[0031] Since the anti-icing air duct 3 is rotatably connected to the fan shaft 5 and the rectifier cap 1 through sealing rings A2 and B4 respectively, when there is a difference in angular displacement, the anti-icing air duct 3 compensates by rotating relative to the rectifier cap 1 through sealing ring A2, thus avoiding the torque generated by the difference in angular displacement. This solves the problem that the fixed connection between the anti-icing air duct and the rectifier cap fails when the torque generated by the difference in angular displacement occurs.

Claims

1. A hot-air heated anti-icing system for rectifier caps that provides all-time anti-icing, characterized in that, include: Fan shaft (5), the fan shaft (5) is provided with a vent hole for the hot air after being compressed and heated to pass through; The interior is a hollow anti-icing air duct (3), and the anti-icing air duct (3) is provided with a groove for mounting a sealing ring B (4) and a fan shaft (5) for rotatable sealing installation; The fan shaft (5) drives the rectifier cap (1) to rotate. The anti-icing air duct (3) is provided with a groove to install the sealing ring A (2) and the rectifier cap (1) in a rotatable and sealed installation. The rectifier cap (1) is provided with a hot air passage for de-icing by discharging hot air. The anti-icing air duct (3) is connected at both ends to the ventilation holes of the fan shaft (5) and the hot air passage of the rectifier cap (1), so that the compressed and heated hot air is led from the ventilation hole of the fan shaft (5) through the rotatable anti-icing air duct (3) to the hot air passage of the rectifier cap (1) for discharge.

2. The hot-air heated anti-icing system for all-time anti-icing of the rectifier cap as described in claim 1, characterized in that: It also includes a first-stage fan rotor (6), a first-stage fan rectifier (7), and a second-stage fan rotor (8) for heating and pressurizing the inlet airflow. The first-stage fan rotor (6) and the second-stage fan rotor (8) are fixed on the fan shaft (5).

3. The hot-air heated anti-icing system for all-time anti-icing of the rectifier cap as described in claim 2, characterized in that: The first stage fan rotor (6) is in front of the first stage fan rectifier (7); the first stage fan rectifier (7) is in front of the second stage fan rotor (8).

4. The hot-air heated anti-icing system for all-time anti-icing of the rectifier cap as described in claim 2, characterized in that: The rectifier cap (1) is fixedly connected to the first-stage fan rotor (6).

5. The hot-air heated anti-icing system for all-time anti-icing of the rectifier cap as described in claim 3, characterized in that: The second-stage fan rotor (8) has a grate extension arm with an airflow hole that allows air to flow into the ventilation hole of the fan shaft (5).

6. The hot-air heated anti-icing system for all-time anti-icing of the rectifier cap as described in claim 2, characterized in that: It also includes a second-stage fan rectifier (9), which seals the airflow with the second-stage fan rotor (8) through a grate sealing structure.

7. The hot-air heated anti-icing system for all-time anti-icing of the rectifier cap as described in claim 1, characterized in that: The outer surface of the rectifier cap (1) is coated with epoxy enamel paint to achieve partial waterproofing.

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