Helicopter flexible armored air entraining pipe

Abstract

The utility model belongs to the technical field of air entraining pipes of helicopters, and particularly relates to a flexible armored air entraining pipe of a helicopter, which comprises an air entraining pipe, a mounting cavity arranged on the air entraining pipe, a fixing ring arranged in the mounting cavity, a mounting groove arranged on the fixing ring, an opening arranged on the fixing ring close to the mounting groove, and a connecting piece arranged in the mounting groove. The air entraining pipe comprises a heat insulation assembly, a wear-resistant layer and a connecting ring, the heat insulation assembly is arranged on the outer side of the air entraining pipe, the wear-resistant layer is arranged on the outer side of the heat insulation assembly, and the connecting piece comprises a rotating shaft and a baffle. Through the mounting cavity, the fixing ring, the connecting piece, the rotating shaft and the baffle, the air entraining pipe is prevented from being directly damaged in a penetrating mode, the flexibility of the air entraining pipe can be guaranteed while the air entraining pipe armoring effect is achieved, the flexible armoring effect is achieved, and the situation that the service life of the air entraining pipe is affected by high temperature is avoided through the heat insulation assembly, the wear-resisting layer and the connecting ring; meanwhile, the wear-resistant layer can guarantee the external wear-resistant effect of the whole air entraining pipe, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of helicopter air ducts, in particular to a helicopter flexible armored air duct. Background Art

[0002] The helicopter bleed air duct is a key component in the helicopter engine, used to introduce external air to supply the engine combustion. Normally, the helicopter engine uses the working principle of the internal combustion engine to provide power, and the internal combustion engine requires air and fuel to burn and generate power. The bleed air duct is a pipe that introduces external air into the engine for combustion. The design and location of the bleed air duct will vary depending on the helicopter model and engine type, but its basic function is to introduce air to support the normal operation of the engine. Through the bleed air duct, the helicopter can obtain sufficient oxygen during flight to ensure that the engine can operate normally. It also helps to regulate the airflow and pressure inside the engine and improve the engine performance and efficiency. The main rubber material of the helicopter bleed air duct is silicone rubber. The advantages of silicone rubber are cold resistance, dielectric properties, ozone resistance and atmospheric aging resistance.

[0003] The prior art has the following problems:

[0004] 1. The existing helicopter exhaust pipe is made of silicone rubber, so it is easy to be directly damaged when it is scratched by the outside world or in hard contact with sharp objects, which affects its use. The current helicopter exhaust pipe does not have an armored effect, and the overall use strength can be further improved;

[0005] 2. The existing helicopter air duct has limited heat resistance. When it is exposed to relatively high external temperature, the higher temperature is transmitted to the entire air duct. The continuous high temperature affects the entire air duct, resulting in a reduced service life. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a flexible armored air duct for helicopters, which solves the problem that the exhaust duct of a helicopter is easily damaged when it is scratched by the outside world or comes into hard contact with sharp objects, thus affecting its use. The current helicopter exhaust duct does not have an armored effect, and its overall strength of use can be further improved. Its own heat resistance is limited, and when it is exposed to relatively high external temperatures, the higher temperature is transmitted to the entire air duct, and the continuous high temperature affects the entire air duct, resulting in a reduced service life.

[0007] To achieve the above object, the utility model provides the following technical solution: a helicopter flexible armored air duct, comprising an air duct, the air duct is provided with an installation cavity, a fixing ring is provided in the installation cavity, a mounting groove is provided on the fixing ring, an opening is provided on the fixing ring near the mounting groove, and a connector is provided in the mounting groove;

[0008] The air duct comprises a heat insulation component, a wear-resistant layer and a connecting ring, the heat insulation component is arranged on the outside of the air duct, and the wear-resistant layer is arranged on the outside of the heat insulation component;

[0009] The connecting piece comprises a rotating shaft and a baffle, wherein one end of the connecting piece is provided with the rotating shaft, and the other end of the connecting piece is provided with the baffle.

[0010] As a preferred technical solution of the utility model: the thermal insulation component is specifically made of aerogel, the wear-resistant layer is specifically made of wear-resistant rubber, the thermal insulation component is fixedly coated on the outside of the air duct, and the wear-resistant layer is fixedly coated on the outside of the thermal insulation component.

[0011] As a preferred technical solution of the utility model: there are several groups of connecting rings, and the connecting rings penetrate and connect the wear-resistant layer, the heat insulation component and the air duct.

[0012] As a preferred technical solution of the utility model: the fixing rings and the connecting pieces are all cast from steel, there are several groups of fixing rings, and the fixing rings are fixedly installed in the installation cavity at equal distances from each other.

[0013] As a preferred technical solution of the utility model: each group of the fixing rings is provided with a mounting groove and an opening, and the mounting groove on one group of the fixing rings corresponds to the opening on an adjacent group of the fixing rings.

[0014] As a preferred technical solution of the utility model: the connecting piece passes through an opening on a group of fixing rings and is connected to a mounting groove on an adjacent group of fixing rings through a rotating shaft, the baffle is fixedly welded to the end of the connecting piece, the opening is larger than the specification of the connecting piece, and the specification of the baffle is larger than the opening.

[0015] Compared with the prior art, the utility model provides a helicopter flexible armored air duct, which has the following beneficial effects:

[0016] 1. A helicopter flexible armored air duct is provided with an installation cavity, a fixing ring, a connector, a rotating shaft, and a baffle. The fixing ring in the installation cavity and several groups of connectors between the fixing rings can form a mesh protection structure. When the air duct is scratched by the outside or hard contacted by sharp objects, the air duct will not be directly damaged by penetration. When the air duct is bent or twisted, the distance between adjacent fixing rings inside the air duct at the bent position will change accordingly. One end of the connector rotates in the installation groove through the rotating shaft, and the other end will move in the opening on the adjacent fixing ring. The flexibility of the air duct can be guaranteed while giving the air duct an armoring effect, thereby achieving a flexible armoring effect.

[0017] 2. This helicopter flexible armored air duct is provided with a heat-insulating component, a wear-resistant layer, and a connecting ring. When the air duct is affected by a relatively high external temperature, the heat-insulating component made of aerogel can effectively block the temperature, thereby preventing the temperature from affecting the entire air duct and preventing the air duct from being affected by high temperature on its service life. At the same time, the wear-resistant layer can also ensure the external wear resistance of the entire air duct and improve its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 For this utility model Figure 1 A magnified schematic diagram;

[0020] Figure 3 This is a schematic diagram of the structure of the connector of the utility model;

[0021] Figure 4 This is a schematic diagram of the installation of the thermal insulation component and the wear-resistant layer of the utility model.

[0022] In the figure: 1. air duct; 101. heat insulation component; 102. wear-resistant layer; 103. connecting ring; 2. installation cavity; 3. fixing ring; 4. installation groove; 5. opening; 6. connecting piece; 601. rotating shaft; 602. baffle. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4 In this embodiment: a helicopter flexible armored air duct includes an air duct 1, an installation cavity 2 is provided on the air duct 1, a fixing ring 3 can be installed conveniently through the installation cavity 2, a fixing ring 3 is provided in the installation cavity 2, a mounting groove 4 is provided on the fixing ring 3, an opening 5 is provided on the fixing ring 3 near the mounting groove 4, a connecting piece 6 is provided in the mounting groove 4, and the connecting piece 6 can be combined with the fixing ring 3 to form a mesh to protect the air duct 1;

[0025] The air duct 1 comprises a heat insulation component 101, a wear-resistant layer 102 and a connecting ring 103. The heat insulation component 101 is arranged on the outside of the air duct 1, and the wear-resistant layer 102 is arranged on the outside of the heat insulation component 101.

[0026] The connecting member 6 includes a rotating shaft 601 and a baffle 602 . The rotating shaft 601 is disposed at one end of the connecting member 6 , and the baffle 602 is disposed at the other end of the connecting member 6 . The baffle 602 can prevent the connecting member 6 from being separated from the opening 5 .

[0027] In this embodiment, the heat insulation component 101 is specifically made of aerogel, the wear-resistant layer 102 is specifically made of wear-resistant rubber, the heat insulation component 101 is fixedly coated on the outside of the air duct 1, and the wear-resistant layer 102 is fixedly coated on the outside of the heat insulation component 101. The wear-resistant effect of the air duct 1 can be ensured by the wear-resistant layer 102, and the heat insulation component 101 can ensure that the air duct 1 is not affected by external high temperature; there are several groups of connecting rings 103, and the connecting rings 103 penetrate and connect the wear-resistant layer 102, the heat insulation component 101 and the air duct 1. The connecting rings 103 can make the installation of the wear-resistant layer 102 and the heat insulation component 101 more stable; the fixing ring 3 and the connecting piece 6 are both made of steel Casting, there are several groups of fixing rings 3, and the fixing rings 3 are fixedly installed in the installation cavity 2 at equal distances from each other; each group of fixing rings 3 is provided with a mounting groove 4 and an opening 5, and the mounting groove 4 on one group of fixing rings 3 corresponds to the opening 5 on an adjacent group of fixing rings 3, and the connecting piece 6 is installed through the mounting groove 4; the connecting piece 6 passes through the opening 5 on one group of fixing rings 3 and is rotatably connected to the mounting groove 4 on an adjacent group of fixing rings 3 through a rotating shaft 601, and a baffle 602 is fixedly welded to the end of the connecting piece 6, the opening 5 is larger than the specification of the connecting piece 6, and the specification of the baffle 602 is larger than the opening 5, and the flexibility of the connecting piece 6 in the mounting groove 4 can be guaranteed by the rotating shaft 601.

[0028] The working principle and use process of the utility model are as follows: in actual use, the whole air duct 1 is installed at the corresponding position on the helicopter in the current conventional way, and its use effect can be normally exerted as the helicopter starts. During use and installation, the fixing ring 3 in the installation cavity 2 and the several groups of connecting parts 6 between the fixing rings 3 can form a mesh protection structure. If the air duct 1 is scratched by the outside world or hard contacted by sharp objects, the air duct 1 will not be directly damaged by penetration, which ensures the service life and makes the air duct 1 have an armored effect. When the air duct 1 needs to be bent or twisted, the fixing rings 3 adjacent to each other in the air duct 1 at the bent position are The spacing between the two ends will change accordingly. During the process, one end of the connector 6 rotates in the installation groove 4 through the rotating shaft 601. At the same time, according to the change of the spacing between the fixing rings 3, the other end of the connector 6 will move in the opening 5 on the adjacent fixing ring 3, which can provide the air duct 1 with an armoring effect while ensuring the flexibility of the air duct 1, thereby achieving a flexible armoring effect. When the air duct 1 is affected by a relatively high external temperature, the thermal insulation component 101 made of aerogel can effectively block the temperature, prevent the temperature from affecting the overall air duct 1, and prevent the air duct 1 from affecting its service life due to high temperature. At the same time, the wear-resistant layer 102 can also ensure the external wear resistance of the overall air duct 1 and improve its service life.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A helicopter flexible armored air duct, comprising an air duct (1), characterized in that: The air duct (1) is provided with a mounting cavity (2), a fixing ring (3) is provided in the mounting cavity (2), a mounting groove (4) is provided in the fixing ring (3), an opening (5) is provided in the fixing ring (3) near the mounting groove (4), and a connecting piece (6) is provided in the mounting groove (4); The air duct (1) comprises a heat insulation component (101), a wear-resistant layer (102) and a connecting ring (103); the heat insulation component (101) is arranged on the outside of the air duct (1), and the wear-resistant layer (102) is arranged on the outside of the heat insulation component (101); The connecting member (6) comprises a rotating shaft (601) and a baffle (602); one end of the connecting member (6) is provided with the rotating shaft (601), and the other end of the connecting member (6) is provided with the baffle (602).

2. The helicopter flexible armored air duct according to claim 1, characterized in that: The thermal insulation component (101) is specifically made of aerogel, the wear-resistant layer (102) is specifically made of wear-resistant rubber, the thermal insulation component (101) is fixedly coated on the outside of the air duct (1), and the wear-resistant layer (102) is fixedly coated on the outside of the thermal insulation component (101).

3. The helicopter flexible armored air duct according to claim 1, characterized in that: There are several groups of the connecting rings (103), and the connecting rings (103) penetrate and connect the wear-resistant layer (102), the heat insulation component (101) and the air duct (1).

4. The helicopter flexible armored air duct according to claim 1, characterized in that: The fixing rings (3) and the connecting pieces (6) are both cast from steel. There are a number of groups of fixing rings (3), and the fixing rings (3) are fixedly installed in the installation cavity (2) at equal distances from each other.

5. The helicopter flexible armored air duct according to claim 1, characterized in that: Each group of the fixing rings (3) is provided with a mounting groove (4) and an opening (5), and the mounting groove (4) on one group of the fixing rings (3) corresponds to the opening (5) on an adjacent group of the fixing rings (3).

6. The helicopter flexible armored air duct according to claim 1, characterized in that: The connecting piece (6) passes through an opening (5) on a group of fixing rings (3) and is rotatably connected to a mounting groove (4) on an adjacent group of fixing rings (3) via a rotating shaft (601); the baffle (602) is fixedly welded to the end of the connecting piece (6); the opening (5) is larger than the specification of the connecting piece (6); and the specification of the baffle (602) is larger than the opening (5).

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