CN210911437U - Multilayer combined type heat insulation device - Google Patents

Abstract

The utility model discloses a multilayer composite heat insulation device, which comprises a high temperature thermal insulation layer, a heat insulation layer and a low temperature thermal insulation layer which are arranged in sequence from a high temperature end close to a heat source to a low temperature end far away from the heat source; the high temperature insulating layer is ceramic fiber module, ceramic fiber module is formed by the mutual concatenation of multistage ceramic fiber modular unit, the heat preservation is nanometer micropore heat insulating board, nanometer micropore heat insulating board both sides face all is provided with steel wire net layer and aluminium foil fiber cloth layer, the low temperature insulating layer is multilayer aerogel heat insulating felt, aerogel heat insulating felt both sides face all is provided with the steel wire net layer, the high temperature insulating layer is close to and is provided with heat insulating reflection stratum on the side of heat source, ceramic fiber modular unit is formed through folding by the ceramic fiber blanket, the ceramic fiber modular unit outside is passed through aluminium foil fiber cloth layer and is around fixing. The utility model provides a thermal-insulated heat preservation device can provide the thermal-insulated effect of long-term stable high temperature, compares with the conventional heat preservation lining of equal thickness, and the effect of keeping warm is better, and the quality is lighter, long service life.

Description

Multilayer combined type heat insulation device

Technical Field

The utility model relates to a high temperature insulation material technical field that insulates against heat, concretely relates to thermal-insulated heat preservation device of multilayer combined type.

Background

With the increasing requirements on energy conservation, emission reduction and environmental protection, the furnace lining of the annealing furnace, particularly the furnace top and the furnace wall in the metallurgical industry, adopts a refractory ceramic fiber module structure, and is increasingly popularized. The ceramic fiber module is a fibrous light refractory material, and has the advantages of light weight, high temperature resistance, good thermal stability, low thermal conductivity, small specific heat, mechanical shock resistance and the like. Compared with the traditional furnace lining structure, the ceramic fiber module furnace lining has low heat capacity, good thermal shock resistance and better heat insulation performance, can effectively strengthen the heat insulation effect of the furnace lining, and reduces the heat loss of various thermal equipment.

The heat insulation device on the existing market uses a material from a hot surface to a cold surface, such as a ceramic fiber module in ceramic kilns and petrochemical industries, the fiber module adopting the single structure has large heat transfer, the heat insulation effect is not ideal, the energy utilization rate is not high, the heat insulation performance is aged along with the prolonging of the service time, the high-temperature end and the low-temperature end use the same material, and the overall cost is higher.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem existing in the background art, the utility model aims to provide a thermal-insulated heat preservation device of multilayer combined type adopts multilayer combined type structure, holds the material that adopts different materials respectively at high temperature and low temperature, has improved thermal-insulated heat preservation effect to the cost is reduced.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a multilayer composite heat insulation device, which comprises a high temperature thermal insulation layer, a heat insulation layer and a low temperature thermal insulation layer which are arranged in sequence from a high temperature end close to a heat source to a low temperature end far away from the heat source; the high temperature insulating layer is the ceramic fiber module, the ceramic fiber module is formed by the mutual concatenation of multistage ceramic fiber modular unit, the heat preservation is nanometer micropore heat insulating board, nanometer micropore heat insulating board both sides face all is provided with steel wire net layer and aluminium foil fiber cloth layer, the low temperature insulating layer is multilayer aerogel heat insulating felt, aerogel heat insulating felt both sides face all is provided with the steel wire net layer, the high temperature insulating layer is close to and is provided with heat insulating reflection layer on the side of heat source, ceramic fiber modular unit is formed by the ceramic fiber blanket through folding, the ceramic fiber modular unit outside is passed through the aluminium foil fiber cloth layer and is around fixing.

The further improvement is that the high-temperature heat insulation layer, the heat insulation layer and the low-temperature heat insulation layer are fixed through high-temperature glue. The gaps between the layered structures are sealed through the high-temperature glue, high-temperature gas is prevented from permeating into the gaps between the layered structures, and the heat insulation effect of the heat insulation device is improved.

The further improvement is that an aluminum foil fiber cloth layer is arranged between the low-temperature heat insulation layer and the heat insulation layer. Can further avoid the heat loss that the thermal radiation caused through setting up the aluminium foil fibre cloth layer.

The ceramic fiber module is further improved in that the splicing position of the ceramic fiber module units is filled by folding a ceramic fiber blanket, a plurality of sections of the ceramic fiber module units are connected into a whole, and the outer sides of the ceramic fiber modules are wrapped by a heat shrinkable film in a heat shrinkable mode. The multi-section ceramic fiber module units are connected into a whole through the arrangement, so that the heat loss is reduced, the heat insulation effect is enhanced, and certain elasticity is provided to effectively compensate the deformation of the equipment, so that no gap is generated between the heat insulation device and the equipment.

The further improvement is that the heat insulation reflecting layer is a coating layer of high temperature resistant radiation protection coating containing silicon carbide and zirconia. The use temperature of the high-temperature-resistant radiation-proof coating containing silicon carbide and zirconium oxide is 500-1800 ℃, the use temperature of the heat-insulating and heat-preserving device is increased, a coating layer formed by the coating layer is more resistant to the scouring of high-temperature airflow, the high-temperature airflow is prevented from permeating a heat-insulating layer and a heat-preserving layer, the heat-insulating and heat-preserving effect is improved, and the service life of a product is prolonged.

The further improvement is that the ceramic fiber blanket is one or a combination of more of an aluminum silicate ceramic fiber blanket, a mullite fiber blanket, a silicon dioxide fiber blanket and a silicon carbide fiber blanket.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model adopts a multi-layer composite structure, which comprises a high-temperature heat-insulating layer, a heat-insulating layer and a low-temperature heat-insulating layer which are arranged in sequence, and under the coordination among the various layered structures, not only the heat-insulating effect is ensured, but also the cost is reduced; the side surface of the high-temperature heat insulation layer close to the heat source is provided with a heat insulation reflection layer, so that part of high-temperature airflow is effectively prevented from permeating the heat insulation layer and the heat insulation layer; the high-temperature heat insulation layer adopts the ceramic fiber module, has excellent heat insulation effect, and also has certain elasticity to effectively compensate the deformation of the equipment, so that no gap is generated between the heat insulation device and the equipment; the steel wire mesh layer and the aluminum foil fiber cloth layer are arranged on the two side faces of the nano microporous heat insulation plate to form heat insulation layers, so that the further loss of heat can be effectively prevented, the strength of the heat insulation layers can be improved, and the service life of the heat insulation device can be prolonged; the low temperature insulating layer that is formed by the thermal-insulated felt of multilayer aerogel uses with the cooperation of high temperature insulating layer and heat preservation and has further restricted thermal convection and radiation, has reduced the heat loss, has strengthened thermal-insulated effect, and the thermal-insulated felt both sides face of aerogel all is provided with the steel wire net layer and has further promoted thermal-insulated heat preservation device's intensity, is convenient for transport, installation and dismantlement. The utility model provides a thermal-insulated heat preservation device can provide the thermal-insulated effect of long-term stable high temperature, compares with the conventional heat preservation lining of equal thickness, and the effect of keeping warm is better, and the quality is lighter, long service life.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic view showing a structure of a multi-layer composite heat-insulating and preserving apparatus according to example 1;

FIG. 2 is a layered structure diagram of a multi-layered composite heat-insulating and preserving apparatus according to example 1;

FIG. 3 is a schematic diagram of the nanoporous insulation board of example 1;

FIG. 4 is a view showing the structure of an aerogel heat insulation blanket in example 1;

FIG. 5 is a layered structure of a multi-layered composite heat-insulating and heat-preserving apparatus according to example 2;

FIG. 6 is a structural view of a multi-layer composite heat-insulating and preserving apparatus in example 2;

wherein the specific reference numerals are as follows: heatinsulation reflection stratum 1, hightemperature insulating layer 2,heat preservation 3, low temperature insulating layer 4,ceramic fiber module 5, nanometermicropore insulating board 6,wire net layer 7, aluminium foilfiber cloth layer 8, aerogel heat insulation felt 9.

Detailed Description

Example 1

Embodiment 1 of the utility model discloses a thermal-insulated heat preservation device of multilayer combined type, as shown in fig. 1 and fig. 2, include from the high temperature end that is close to the heat source to the hightemperature insulating layer 2,heat preservation 3 and the low temperature insulating layer 4 that the low temperature end of keeping away from the heat source set gradually. The high-temperatureheat insulation layer 2 is aceramic fiber module 5, and theceramic fiber module 5 is formed by splicing a plurality of sections of ceramic fiber module units; the ceramic fiber module unit is formed by folding a ceramic fiber blanket, and the outer side of the ceramic fiber module unit is surrounded and fixed by an aluminum foil fiber cloth layer; ceramic fibre modular unit concatenation department is folded by ceramic fibre blanket and is filled, connects multistage ceramic fibre modular unit as a whole, and the thermal shrinkage membrane parcel is passed through in theceramic fibre module 5 outside, connects multistage ceramic fibre modular unit as a whole through setting up, has reduced the heat loss, has strengthened thermal-insulated effect, and it has certain elasticity and effectively compensaties the deformation of equipment for can not produce the gap between thermal-insulated heat preservation device and the equipment. Theheat preservation layer 3 is a nanometer microporeheat insulation plate 6, as shown in fig. 3, two side faces of the nanometer microporeheat insulation plate 6 are provided with a steelwire mesh layer 7 and an aluminum foilfiber cloth layer 8, the further loss of heat can be effectively prevented through arrangement, the strength of theheat preservation layer 3 can be improved, and the service life of the heat insulation device is prolonged. Low temperature insulating layer 4 is two layers of aerogelheat insulation blanket 9, as shown in FIG. 4, and aerogelheat insulation blanket 9 both sides face all is provided with steelwire net layer 7, and steelwire net layer 7 is fixed in on aerogelheat insulation blanket 9 both sides face through high temperature glue, and steelwire net layer 7's setting has further promoted thermal-insulated heat preservation device's intensity, is convenient for transport, installation and dismantlement. The side surface of the high-temperatureheat insulation layer 2 close to the heat source is provided with a heatinsulation reflection layer 1.

Wherein, the high-temperature heat-insulatinglayer 2, the heat-insulatinglayer 3 and the low-temperature heat-insulating layer 4 are fixed by high-temperature glue. The gaps between the layered structures are sealed through the high-temperature glue, high-temperature gas is prevented from permeating into the gaps between the layered structures, and the heat insulation effect of the heat insulation device is improved.

Wherein, the heatinsulation reflecting layer 1 is a coating layer of high temperature resistant radiation protection coating containing silicon carbide and zirconia. The use temperature of the high-temperature-resistant radiation-proof coating containing silicon carbide and zirconium oxide is 500-1800 ℃, the use temperature of the heat-insulating and heat-preserving device is increased, a coating layer formed by the coating layer is more resistant to the scouring of high-temperature airflow, the high-temperature airflow is prevented from permeating a heat-insulating layer and a heat-preserving layer, the heat-insulating and heat-preserving effect is improved, and the service life of a product is prolonged.

Wherein the ceramic fiber blanket is one or more of aluminum silicate ceramic fiber blanket, mullite fiber blanket, silicon dioxide fiber blanket, and silicon carbide fiber blanket.

Example 2

The utility model discloses anembodiment 2 discloses a thermal-insulated heat preservation device of multilayer combined type, andembodiment 2 is the same withembodiment 1's essential feature, and it has following difference technical characteristic: as shown in fig. 5 and 6, the low-temperature heat insulation layer 4 is four layers of aerogel heat insulation felt 9, two side surfaces of the aerogel heat insulation felt 9 are both provided with steelwire mesh layers 7, and the steelwire mesh layers 7 are fixed on the two side surfaces of the aerogel heat insulation felt 9 through high-temperature glue; be provided with aluminium foilfiber cloth layer 8 between low temperature insulating layer 4 and theheat preservation 3, can further avoid the heat loss that the thermal radiation caused through setting up aluminium foilfiber cloth layer 8.

The utility model provides a thermal-insulated heat preservation device can provide the thermal-insulated effect of long-term stable high temperature, compares with the conventional heat preservation lining of equal thickness, and the effect of keeping warm is better, and the quality is lighter, long service life.

It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical field of the utility model technical personnel, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replacement.

Claims (6)

1. A multi-layer composite heat insulation device is characterized by comprising a high-temperature heat insulation layer, a heat insulation layer and a low-temperature heat insulation layer which are sequentially arranged from a high-temperature end close to a heat source to a low-temperature end far away from the heat source; the high temperature insulating layer is the ceramic fiber module, the ceramic fiber module is formed by the mutual concatenation of multistage ceramic fiber modular unit, the heat preservation is nanometer micropore heat insulating board, nanometer micropore heat insulating board both sides face all is provided with steel wire net layer and aluminium foil fiber cloth layer, the low temperature insulating layer is multilayer aerogel heat insulating felt, aerogel heat insulating felt both sides face all is provided with the steel wire net layer, the high temperature insulating layer is close to and is provided with heat insulating reflection layer on the side of heat source, ceramic fiber modular unit is formed by the ceramic fiber blanket through folding, the ceramic fiber modular unit outside is passed through the aluminium foil fiber cloth layer and is around fixing.

2. The multi-layer composite thermal insulation device according to claim 1, wherein the high temperature thermal insulation layer, the thermal insulation layer and the low temperature thermal insulation layer are fixed together by high temperature glue.

3. The multi-layer composite thermal insulation device according to claim 1, wherein an aluminum foil fiber cloth layer is disposed between the low-temperature thermal insulation layer and the thermal insulation layer.

4. The multi-layer composite thermal insulation device according to claim 1, wherein the splicing position of the ceramic fiber module units is filled by folding a ceramic fiber blanket, a plurality of segments of the ceramic fiber module units are connected into a whole, and the outer sides of the ceramic fiber modules are wrapped by thermal shrinkage films in a thermal shrinkage mode.

5. The multi-layer composite thermal insulation device of claim 1, wherein the thermal insulation reflective layer is a coating layer of a high temperature resistant radiation protective coating containing silicon carbide and zirconium oxide.

6. The multi-layer composite thermal insulation device of claim 1, wherein the ceramic fiber blanket is one or more of an aluminum silicate ceramic fiber blanket, a mullite fiber blanket, a silica fiber blanket, and a silicon carbide fiber blanket.

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