CN203476511U

CN203476511U - Heat insulating hood

Info

Publication number: CN203476511U
Application number: CN201320521405.0U
Authority: CN
Inventors: 王慧; 郑海碧; 胡武利; 薛晓军
Original assignee: 11 Research Institute of 6th Academy of CASC
Current assignee: 11 Research Institute of 6th Academy of CASC
Priority date: 2013-08-23
Filing date: 2013-08-23
Publication date: 2014-03-12
Anticipated expiration: 2023-08-23

Abstract

The utility model belongs to the aerospace field, and specifically relates to a heat insulating hood. The heat insulating hood comprises an inner heat insulating layer, a middle heat insulating layer, a middle waterproof layer and an outer heat insulating layer, wherein the inner heat insulating layer is made of high silica glass fiber cloth, the middle heat insulating layer is made of a high silica glass fiber mat material, the middle waterproof layer is made of membrane coated polytetrafluoroethylene alkali-free glass fiber cloth, and the outer heat insulating layer is made of Kevlar fireproof cloth. The heat insulating hood provided by the utility model can be used for preventing the heat radiation effect of high temperature media inside pipelines and assemblies on the outer environment and preventing the heat radiation effect of the outer environment on ultralow temperature media inside the pipelines and the assemblies.

Description

A kind of thermal shield

Technical field

The utility model belongs to aerospace field, is specifically related to a kind of thermal shield.

Background technique

At present, in aerospace field motor or some other main equipment in the course of the work, when high temperature media is flowed through part assembly, pipeline, the thermal radiation meeting of the high temperature media in assembly, pipeline affects external environment condition; Contrary, when ultralow temperature MEDIA FLOW is during through assembly, pipeline, external environment condition thermal radiation meeting makes the ultralow temperature medium gasification in assembly, pipeline.

Model utility content

For solving the problem in background technique, the utility model provides a kind of can prevent pipeline, the thermal radiation impact of component internal high temperature media on external environment condition, also can prevent the thermal shield of external environment condition on the thermal radiation impact of the ultralow temperature medium of pipeline, component internal.

Concrete technological scheme of the present utility model is:

In pipeline, assembly, flow through be high temperature media time, in order to prevent the impact of internal high temperature medium on external environment condition, this thermal shield comprises inside thermal-protective coating, intermediate thermal insulating layer, middle watertightness barrier and the outer insulative layer setting gradually.

In pipeline, assembly, flow through be ultralow temperature medium time, for preventing that external environment condition from comprising the inside thermal-protective coating setting gradually, middle watertightness barrier, intermediate thermal insulating layer and outer insulative layer to this thermal shield that affects of the ultralow temperature medium in pipeline, assembly.

Wherein, inner thermal-protective coating is that high silica glass cloth is made; Intermediate thermal insulating layer is that resurrection glass fibre felt material is made; Middle watertightness barrier is that overlay film teflon alkali-free glass fiber cloth is made; Outer insulative layer is that kevlar flameproof textile is made.

The beneficial effects of the utility model are:

1, each insulating layer material broad application temperature range of using in the utility model; Thermal conductivity is little, density is little, fire-retardant rank is high.

2, the utility model adopts overlay film teflon alkali-free glass fiber cloth as watertightness barrier, not only can be effectively waterproof and dampproof, and also material softness itself is tear-resistant is adapted to various operating modes.

When 3, the utility model is wrapped on assembly or pipeline, can adopt the variety of ways such as felt is buckled, rope, slide fastener to connect, be easy to dismounting, repeatedly use repeatly.

Accompanying drawing explanation

Fig. 1 is the utility model structural representation.

Fig. 2 is the utility model structural scheme of mechanism.

Watertightness barrier, 4-outer insulative layer in the middle of the inner thermal-protective coating of 1-, 2-intermediate thermal insulating layer, 3-.

Embodiment

Referring to Fig. 1, in pipeline, assembly, flow through be high temperature media time, in order to prevent the impact of internal high temperature medium on external environment condition, the utility model provides is wrapped in thermal shield on pipeline, assembly and comprises by inner and be disposed with inner thermal-protective coating 1, intermediate thermal insulating layer 2, middle watertightness barrier 3 and outer insulative layer 4 outward and form.

Referring to Fig. 2, in pipeline, assembly, flow through be ultralow temperature medium time, for preventing the impact of external environment condition on the ultralow temperature medium in pipeline, assembly, the utility model provides is wrapped in thermal shield on pipeline, assembly and comprises by inner and be disposed with inner thermal-protective coating 1, middle watertightness barrier 3, intermediate thermal insulating layer 2 and outer insulative layer 4 outward and form;

In addition, on the edge of this thermal shield, be also provided with that felt is buckled, rope, slide fastener etc. be for by whole pipeline, the assembly of being wrapped in of thermal shield, adopts above-mentioned Placement to be easy to dismounting, can be repeatedly used.

Specialization, the inside thermal-protective coating 1 of this thermal shield is the making of high silica glass cloth material; This material can be at-260 ℃～+ 1000 ℃ temperature be used for a long time, indeformable, can not produce burning; Its thickness only has 0.26mm, density 220g/cm2, and softness is good tear-resistant.

Intermediate thermal insulating layer 2 is the making of resurrection glass fibre felt material; This material can be at-260 ℃～+ 1000 ℃ temperature be used for a long time, indeformable, can not produce burning; Its thickness can be selected the plurality of specifications such as 6mm, 10mm, 20mm and 24mm, density 900g/cm ².

Middle watertightness barrier 3 is that overlay film teflon alkali-free glass fiber cloth material is made; This material can be used for a long time at-260 ℃～+ 300 ℃ temperature, indeformable, can not produce burning; It is unchanged that rear F4 coating is rubbed in bending, do not affect water-proof performance; Its thickness only has 0.13mm, density 100g/cm ².

Outer insulative layer 4 is that kevlar flameproof textile material is made; This material can be used for a long time at-260 ℃～+ 350 ℃ temperature, indeformable, can not produce burning and aesthetic in appearance; Its thickness only has 0.36mm, density 210g/cm ².

Claims

1. a thermal shield, is characterized in that: comprise the inside thermal-protective coating, intermediate thermal insulating layer, middle watertightness barrier and the outer insulative layer that set gradually;

Described inner thermal-protective coating is that high silica glass cloth is made;

Described intermediate thermal insulating layer is that resurrection glass fibre felt material is made;

In the middle of described, watertightness barrier is that overlay film teflon alkali-free glass fiber cloth is made;

Described outer insulative layer is that kevlar flameproof textile is made.

2. a thermal shield, is characterized in that: comprise the inside thermal-protective coating setting gradually, middle watertightness barrier, intermediate thermal insulating layer and outer insulative layer;

Described outer insulative layer is that kevlar flameproof textile is made.