CN210364351U

CN210364351U - Thermal protection structure

Info

Publication number: CN210364351U
Application number: CN201921393409.9U
Authority: CN
Inventors: 王占富; 王奡; 王钦; 刘英福; 魏衍强
Original assignee: Shenyang Aircraft Design and Research Institute Aviation Industry of China AVIC
Current assignee: Shenyang Aircraft Design and Research Institute Aviation Industry of China AVIC
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-04-21
Anticipated expiration: 2029-08-26

Abstract

The application belongs to hot protection design field, concretely relates to hot protective structure, include: a mouth frame; a flap for covering the opening of the mouth frame; the heat insulation layer is arranged along the edge of the opening cover and is positioned between the opening cover and the opening frame; and the fasteners are used for tightly and fixedly connecting the interface cover and the opening frame. Above-mentioned hot protective structure sets up the insulating layer between mouthful frame and flap, can prevent that the heat from directly entering into the inside of aircraft between mouthful frame and the flap to the inside of aircraft, damages the internal plant of aircraft.

Description

Thermal protection structure

Technical Field

The application belongs to the field of thermal protection design, and particularly relates to a thermal protection structure.

Background

Many places set up mouthful frame and flap complex structure on the aircraft, and this kind of structure can not effectively the separation heat at present, and thermal-insulated effect is relatively poor, causes the heat to get into the aircraft from here inside, influences the work of aircraft internal plant, makes aircraft internal plant suffer destruction when serious, and the dismouting difficulty of present mouthful frame and flap.

The present application is made in view of the above-mentioned drawbacks of the prior art.

Disclosure of Invention

It is an object of the present application to provide a thermal protection structure that overcomes or mitigates at least one of the disadvantages of the prior art.

The technical scheme of the application is as follows:

a thermal protection structure comprising:

a mouth frame;

a flap for covering the opening of the mouth frame;

the heat insulation layer is arranged along the edge of the opening cover and is positioned between the opening cover and the opening frame;

and the fasteners are used for tightly and fixedly connecting the interface cover and the opening frame.

According to at least one embodiment of the present application, the outside surface of the flap is coated with a reflective coating.

According to at least one embodiment of the present application, the outside surface of the flap is coated with a radiant coating.

According to at least one embodiment of the present application, the radial coating is a silicon carbide coating or a zirconium oxide coating or a yttrium oxide coating.

According to at least one embodiment of the present application, the flap is made of a high temperature resistant metal material.

According to at least one embodiment of the present application, the refractory metal material is a titanium alloy or steel.

According to at least one embodiment of the application, the insulation layer is made of basalt cotton.

In accordance with at least one embodiment of the present application, the portion of each fastener that contacts the flap is coated with a sealant.

According to at least one embodiment of the present application, each fastener is a pallet nut.

Drawings

FIG. 1 is a thermal protection structure provided by an embodiment of the present application;

wherein:

1-opening frame; 2-opening the cover; 3-a heat insulation layer; 4-a fastener.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the present application are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

It should be noted that in the description of the present application, the terms of direction or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those skilled in the art as the case may be.

The present application is described in further detail below with reference to fig. 1.

A thermal protection structure comprising:

an opening frame 1;

a flap 2 for covering the opening of the mouth frame 1;

the heat insulation layer 3 is arranged along the edge of the mouth cover 2 and is positioned between the mouth cover 2 and the mouth frame 1;

and a plurality of fasteners 4 for fastening the mouth cover 2 and the mouth frame 1.

With regard to the thermal protection structure disclosed in the above embodiments, it can be understood by those skilled in the art that the thermal insulation layer 3 is disposed between the mouth frame 1 and the flap 2, so that heat can be prevented from directly entering the interior of the aircraft from between the mouth frame 1 and the flap 2 to damage the internal equipment of the aircraft.

In some alternative embodiments, the outside surface of flap 2 is coated with a reflective coating to block heat transfer from there to the interior of the aircraft by way of convection.

In some alternative embodiments, the outside surface of flap 2 is coated with a radiant coating that actively releases its own heat in the form of radiation to the environment.

In some alternative embodiments, the radial coating is a silicon carbide coating or a zirconia coating or a yttria coating.

In some alternative embodiments, flap 2 is made of a high temperature resistant metal material that is in direct contact with an external heat source.

In some alternative embodiments, the refractory metal material is a titanium alloy or steel.

In some optional embodiments, the heat insulation layer 3 is made of basalt cotton BM-15, so that the heat insulation layer 3 not only has good heat insulation effect, but also has certain buffering, vibration damping and sound insulation effects.

In alternative embodiments, the area of each fastener 4 in contact with flap 2 is coated with a sealant to prevent heat from being transferred to the interior of the body.

In some alternative embodiments, each fastener 4 is a pallet nut to facilitate the disassembly and assembly of the structures of the mouth frame 1 and the mouth cover 2.

So far, the technical solutions of the present application have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present application is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the present application, and the technical scheme after the changes or substitutions will fall into the protection scope of the present application.

Claims

1. A thermal protection structure, comprising:

a mouth frame (1);

a flap (2) for covering an opening of the mouth frame (1);

the heat insulation layer (3) is arranged along the edge of the cover (2) and is positioned between the cover (2) and the mouth frame (1);

a plurality of fasteners (4) for fastening the flap (2) to the mouth frame (1).

2. The thermal protection structure according to claim 1,

the outer side surface of the cover (2) is coated with a reflective coating.

3. The thermal protection structure according to claim 1,

the outer side surface of the opening cover (2) is coated with a radiation type coating.

4. The thermal protection structure of claim 3,

the radiation type coating is a silicon carbide coating or a zirconium oxide coating or an yttrium oxide coating.

5. The thermal protection structure according to claim 1,

the flap (2) is made of a high temperature resistant metal material.

6. The thermal protection structure of claim 5,

the high-temperature resistant metal material is titanium alloy or steel.

7. The thermal protection structure according to claim 1,

the heat insulation layer (3) is made of basalt cotton.

8. The thermal protection structure according to claim 1,

and the contact part of each fastener (4) and the cover (2) is coated with a sealant.

9. The thermal protection structure according to claim 1,

each fastener (4) is a supporting plate nut.