Helicopter air inlet purification device

Abstract

The utility model discloses a helicopter air inlet duct purification device which comprises a switching section, an upstream plate is fixedly connected to the upper side of the switching section, a connecting pipe is fixedly connected to the front side of the switching section, an engine air guiding pipe is fixedly connected to the outer side of the connecting pipe, sand discharging units are arranged on the left side and the right side of the switching section respectively, and the sand discharging units are arranged on the left side and the right side of the switching section respectively. A plurality of round holes are formed in the outer side of the upstream plate and used for installing an upstream pipe of a vortex pipe, a downstream plate is fixedly connected to the inner side of the switching section, a plurality of round holes are formed in the downstream plate and used for installing a downstream pipe of the vortex pipe, and a protection net is arranged on the lower side of the switching section. By arranging the switching section, the upstream plate, the downstream plate and the multiple vortex tubes, external sand-containing air can be conveniently filtered by the multiple vortex tubes inside and discharged through the sand discharging channels on the two sides, clean air is provided for the helicopter, sand dust is discharged through the injection pipe and the sand discharging pipes, and it is avoided that operation of the helicopter is affected by the sand dust.

Description

Technical Field

[0001] The utility model relates to the field of unmanned aerial vehicle (UAV) helicopters, in particular to a helicopter air intake duct purification device. Background Art

[0002] Modern drones and helicopters often use simple landing and takeoff sites, or even temporary dirt or sandy terrain in the wild. Furthermore, when drones and helicopters fly or hover at low altitudes near the ground, the downwash created by the rotating rotors stirs up large amounts of dust from the ground. This dust is then sucked into the drone's air intake, posing a significant threat to the helicopter. Utility Model Content

[0003] In order to overcome the deficiency in the prior art that external sand-containing air easily affects engine operation, one of the purposes of the present utility model is to provide a helicopter air inlet purification device.

[0004] One of the objectives of the present utility model is achieved by the following technical solution: a helicopter air inlet purification device, comprising a transition section: an upstream plate is fixedly connected to the upper side of the transition section, a connecting pipe is fixedly connected to the front side of the transition section, an engine air bleed pipe is fixedly connected to the outer side of the connecting pipe, a sand removal unit is provided on both the left and right sides of the transition section, a plurality of circular holes are opened on the outer side of the upstream plate, a downstream plate is fixedly connected to the inner side of the transition section, a plurality of circular holes are opened on the downstream plate, and a protective net is provided on the lower side of the transition section;

[0005] The sand discharge unit includes a fixed plate, which is fixedly connected to the left and right sides of the transition section. The left and right ends of the connecting pipe pass through the outside of the fixed plate and are fixedly connected to multiple fixed pipes. The outsides of the multiple fixed pipes are fixedly connected to ejector pipes, and the upper ends of the ejector pipes are fixedly connected to the sand discharge pipes.

[0006] According to the helicopter air inlet purification device, the left and right sides of the transition section are fixedly connected with sand discharge channels to facilitate the discharge of sand and gravel.

[0007] According to the helicopter air inlet purification device, a through hole adapted to fit the sand discharge pipe is provided on the upper side of the upstream plate, so that the sand discharge pipe can pass through the upper side of the upstream plate.

[0008] According to the helicopter air inlet purification device, the transition section is composed of four aluminum alloy plates.

[0009] According to the helicopter air inlet purification device, the protective net is woven from stainless steel wire.

[0010] According to the helicopter air inlet purification device, the sand discharge channel is arranged in an arc-shaped structure.

[0011] Beneficial effects:

[0012] By setting up a transition section, an upstream plate, a downstream plate and multiple vortex tubes, the external sand-containing air is filtered and discharged through the sand discharge channels on both sides, which facilitates the provision of clean air for the helicopter. The sand and gravel are discharged through the ejector pipe and the sand discharge pipe to prevent the sand and gravel from affecting the operation of the helicopter.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is an overall three-dimensional structural diagram of a helicopter air intake purification device according to the present invention;

[0016] Figure 2 This is a side perspective structural diagram of a helicopter air inlet purification device of the utility model;

[0017] Figure 3 This is an exploded view of a helicopter air intake purification device according to the present invention;

[0018] Figure 4 The utility model is a three-dimensional structural diagram of a sand removal unit in a helicopter air inlet purification device.

[0019] Legend:

[0020] 1. Adapter section; 2. Engine air duct; 3. Connecting pipe; 4. Upstream plate; 5. Sand discharge unit; 501. Fixed plate; 502. Fixed pipe; 503. Ejector pipe; 504. Sand discharge pipe; 6. Protective net; 7. Sand discharge channel; 8. Vortex tube; 9. Downstream plate; 10. Sand discharge hole. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0022] Reference Figure 1-4, a helicopter air inlet purification device, including a transition section 1: the upper side of the transition section 1 is fixedly connected to an upstream plate 4, the front side of the transition section 1 is fixedly connected to a connecting pipe 3, the outer side of the connecting pipe 3 is fixedly connected to an engine air bleed pipe 2, sand removal units 5 are provided on both sides of the transition section 1, a plurality of circular holes are opened on the outer side of the upstream plate 4, a downstream plate 9 is provided on the inner side of the transition section 1, a plurality of vortex tubes 8 are installed on the upstream plate 4 and the downstream plate 9, a protective net 6 is provided on the lower side of the transition section 1, the inner side of the transition section 1 is fixedly connected to the downstream plate 9, sand removal holes 10 are opened on both sides of the transition section 1, the protective net 6 is made of wire mesh, the transition section 1 The left and right sides are fixedly connected with sand discharge channels 7. The adapter section 1 is composed of four aluminum alloy plates. The sand discharge channel 7 is an arc-shaped structure. When in use, the adapter section 1 is installed at the helicopter air intake channel. When the external air enters the air intake channel, the external sand-containing air first enters the adapter section 1 through the upstream plate 4, and then passes through the multiple vortex tubes 8 inside to filter the sand and gravel in the external air. The filtered sand and gravel are discharged through the sand discharge holes 10 on the left and right sides, and then enter the sand discharge channel 7 through the sand discharge holes 10. Thereafter, they are discharged outside the machine through the sand discharge pipe 504 in the sand discharge unit 5 under the induced action of the bleed air from the air bleed pipe 2.

[0023] The sand removal unit 5 includes a fixed plate 501, which is fixedly connected to the left and right sides of the transition section 1. The left and right ends of the connecting pipe 3 pass through the outside of the fixed plate 501 and are fixedly connected to multiple fixed pipes 502. The outsides of the multiple fixed pipes 502 are fixedly connected to the ejector pipe 503. The upper ends of the ejector pipes 503 are fixedly connected to the sand removal pipe 504. A through hole adapted to the sand removal pipe 504 is provided on the upper side of the upstream plate 4. When in use, the engine air bleed pipe 2 is connected to the engine to lead the gas to the ejector pipe. The gas flows at high speed through the ejector pipe, and the air containing sand and dust is brought out of the machine through the sand removal pipe 504.

[0024] Working principle: When in use, the device is placed in the air intake passage of the engine, and then the external air enters the transition section 1 through the upstream plate 4, and then is filtered by multiple vortex tubes 8 to filter the external air, so that the sand and gravel in the air are filtered out, and with the help of the engine air duct 2 and the ejection effect of the ejection pipe 503, the sand and gravel are finally discharged to the outside through the sand discharge pipe 504.

[0025] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A helicopter air inlet purification device, characterized in that: The invention comprises a transition section (1): an upstream plate (4) is fixedly connected to the upper side of the transition section (1), a connecting pipe (3) is fixedly connected to the front side of the transition section (1), an engine air bleed pipe (2) is fixedly connected to the outer side of the connecting pipe (3), a sand discharge unit (5) is provided on both the left and right sides of the transition section (1), a plurality of circular holes are provided on the outer side of the upstream plate (4), a downstream plate (9) is fixedly connected to the inner side of the transition section (1), a plurality of circular holes are provided on the downstream plate (9), a plurality of vortex tubes (8) are installed on the upstream plate (4) and the downstream plate (9), a protective net (6) is provided on the lower side of the transition section (1), and a sand discharge hole (10) is provided on both the left and right sides of the transition section (1); The sand discharge unit (5) comprises a fixed plate (501), the fixed plate (501) being fixedly connected to the left and right sides of the transition section (1), the left and right ends of the connecting pipe (3) both pass through the outside of the fixed plate (501) and are fixedly connected to a plurality of fixed pipes (502), the outsides of the plurality of fixed pipes (502) are fixedly connected to ejector pipes (503), and the upper ends of the ejector pipes (503) are fixedly connected to the sand discharge pipe (504).

2. A helicopter air intake purification device according to claim 1, characterized in that: The left and right sides of the transition section (1) are both fixedly connected with sand discharge channels (7).

3. A helicopter air intake purification device according to claim 1, characterized in that: A through hole adapted to fit the sand discharge pipe (504) is provided on the upper side of the upstream plate (4).

4. A helicopter air intake purification device according to claim 1, characterized in that: The transition section (1) is composed of four aluminum alloy plates.

5. The helicopter air inlet purification device according to claim 1, characterized in that: The protective net (6) is woven from stainless steel wires.

6. A helicopter air intake purification device according to claim 2, characterized in that: The sand discharge channel (7) is arranged in an arc-shaped structure.

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