CN209805344U

CN209805344U - A fire prevention, cold bridge prevention cable wall structure of wearing for freezer

Info

Publication number: CN209805344U
Application number: CN201920925102.2U
Authority: CN
Inventors: 张伟; 张伯乐; 李东海; 李继晓; 孙希军; 孙宇
Original assignee: China Merchants International Engineering Co Ltd
Current assignee: China Merchants International Engineering Co Ltd
Priority date: 2019-06-19
Filing date: 2019-06-19
Publication date: 2019-12-17
Anticipated expiration: 2029-06-19

Abstract

The utility model discloses a fireproof and cold bridge-proof cable wall penetrating structure for a refrigeration house, which comprises a wall body, a wall penetrating pipe and a cable, wherein the wall body is provided with a threading through hole, the wall penetrating pipe penetrates through the threading through hole, the cable penetrates through the wall penetrating pipe, the outer wall of the wall penetrating pipe is wrapped with a basalt fiber fireproof cloth layer, and the space between the basalt fiber fireproof cloth layer and the inner wall of the threading through hole is plugged through a first sealing glue layer; the outer wall of the part of the basalt fiber fireproof cloth layer, which is positioned outside the wall body, is wrapped with a polyurethane foaming layer, and the outer wall of the polyurethane foaming layer is wrapped with an aluminum alloy layer; the inner holes at the two ends of the wall penetrating pipe are plugged through the plugging layers. The wu yan fibre fire prevention cloth is the incombustible material, can satisfy the fire prevention requirement, and the polyurethane foaming has heat retaining effect, and adopts the clearance between first sealing glue layer shutoff basalt fibre fire prevention cloth and the threading through-hole inner wall, can guarantee better anti cold bridge effect, consequently, the utility model discloses can satisfy fire prevention processing, anti cold bridge processing requirement betterly.

Description

A fire prevention, cold bridge prevention cable wall structure of wearing for freezer

Technical Field

The utility model belongs to the technical field of the cable wall penetrating, especially, be used for the fire prevention of freezer, prevent cold bridge cable wall penetrating structure.

background

At present, the cold storage is mainly divided into two types according to the structural form: the first type is civil construction type cold storage, and the second type is assembly type cold storage. Civil engineering formula freezer: the main body is generally a reinforced concrete structure or a brick concrete structure, and polyurethane is sprayed inside the main body for heat preservation. Assembled freezer: the sandwich insulation board is used as a cold storage enclosure, and the steel structure is used as a main structure. The highest combustion performance of the adopted heat-insulating material can only reach B1 level no matter the civil construction type refrigeration house or the assembly type refrigeration house. When the power is distributed to the air cooler and the lighting lamp in the cold storage, the electric pipelines need to penetrate through the wall body and the heat insulation layer.

according to the relevant provisions of 'fire code for building design' 6.7.11, the electrical circuit should not pass through or be laid in the thermal insulation material with the combustion performance of B1 or B2 level; when the pipe needs to be penetrated or laid, the metal pipe is penetrated, and fire-proof protection measures such as fire-proof isolation and the like are adopted around the metal pipe by adopting a non-combustible heat-insulating material.

The common cold room temperature of the cold storage is-25 ℃ to 4 ℃, the individual ultralow temperature cold room is-55 ℃, when an electric circuit passes through a B1-grade heat insulation layer, a steel pipe needs to be penetrated for protection, and the corresponding fireproof treatment and cold bridge prevention treatment are particularly important.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fire prevention, anti-cold bridge cable wear wall structure for freezer can satisfy fire prevention processing, anti-cold bridge better and handle the requirement.

The purpose of the utility model is realized like this: the fireproof and cold-bridge-proof cable wall penetrating structure for the refrigeration house comprises a wall body, a wall penetrating pipe and a cable, wherein the wall body is provided with a through hole, the wall penetrating pipe penetrates through the through hole, the cable penetrates through the wall penetrating pipe,

The outer wall of the wall penetrating pipe is wrapped with a basalt fiber fireproof cloth layer, and a part, located in the threading through hole, of the basalt fiber fireproof cloth layer is plugged with the inner wall of the threading through hole through a first sealing glue layer;

the outer wall of the part, located on the outer side of the wall body, of the basalt fiber fireproof cloth layer is wrapped with a polyurethane foaming layer, and the outer wall of the polyurethane foaming layer is wrapped with an aluminum alloy layer;

And inner holes at two ends of the wall penetrating pipe are plugged through plugging layers.

furthermore, the basalt fiber fireproof cloth layer is two layers, and the thickness of each layer is 3 mm.

Furthermore, the end face of the inner end of the basalt fiber fireproof cloth layer is plugged through a second sealing glue layer.

Further, the length of the polyurethane foaming layer is larger than or equal to 600mm, and the thickness of the polyurethane foaming layer is larger than or equal to 50 mm.

Further, the polyurethane foaming layer has the combustion performance of B1 grade.

Further, the blocking layer is a mixture of fireproof daub and sealant.

Furthermore, the wall penetrating pipe is an SC thick-wall hot-dip galvanized steel pipe.

Further, the thickness of the aluminum alloy layer is 0.6 mm.

The utility model has the advantages that: the basalt fiber fire prevention cloth is the incombustible material, can satisfy the fire prevention requirement, and the polyurethane foaming has heat retaining effect, and adopts the clearance between first sealing glue layer shutoff basalt fiber fire prevention cloth and the threading through-hole inner wall, can guarantee better cold bridge prevention effect, consequently, the utility model discloses can satisfy fire prevention processing, cold bridge prevention processing requirement betterly.

Drawings

Fig. 1 is a schematic front view of the present invention.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1, the utility model discloses a fire prevention, anti-cold bridge cable through-wall structure for freezer, including wall body 1, wall pipe 2 and cable 3, be provided with the threading through-hole on the wall body 1, wall pipe 2 runs through the threading through-hole, cable 3 runs through wall pipe 2. The wall body 1 has two forms, one is the wall body 1 of the civil engineering type refrigeration house, and comprises an outer concrete wall and an inner heat-insulating layer, and the combustion performance of the heat-insulating layer is B1 grade. The other type is a wall body 1 of the assembly type refrigeration house, which is a sandwich insulation board. The two wall bodies 1 adopt the same fireproof and cold bridge-proof cable wall penetrating structure. The wall body 1 is positioned on the inner side of the cold storage, the outer side of the cold storage, the inner end and the inner side are both positioned on one side or one end of the cold storage, and the outer end are both positioned on one side or one end of the cold storage.

The outer wall of the wall penetrating pipe 2 is wrapped with the basalt fiber fireproof cloth layer 4, and the basalt fiber fireproof cloth layer 4 is made of non-combustible materials, so that the wall penetrating pipe has a good flame retardant effect and can meet the requirement of fire resistance. The basalt fiber fireproof cloth layer 4 is located between the part in the threading through hole and the inner wall of the threading through hole and is plugged through the first sealing glue layer 5, the first sealing glue layer 5 can eliminate a gap between the basalt fiber fireproof cloth layer 4 and the inner wall of the threading through hole, good sealing performance is guaranteed, and a cold bridge prevention effect is achieved. The basalt fiber fireproof cloth layer 4 is two layers, which can be 1 layer, 3 layers, 4 layers and the like, the thickness of each layer is 3mm, the total thickness of the basalt fiber fireproof cloth layer 4 is 6mm, and the thickness can be 8mm or 9mm and the like. The inner end face of the basalt fiber fireproof cloth layer 4 is plugged through the second sealing adhesive layer 8, the basalt fiber fireproof cloth layer 4 can be tightly wrapped on the outer wall of the wall penetrating pipe 2, the second sealing adhesive layer 8 can further ensure good sealing performance, and a better cold bridge prevention effect is achieved. The second sealant layer 8 and the first sealant layer 5 can be formed by using the conventional sealant.

The outer wall of the part, located on the outer side of the wall body 1, of the basalt fiber fireproof cloth layer 4 is wrapped by a polyurethane foaming layer 6, polyurethane foaming is made of a heat insulation material, and external heat is prevented from being transferred to the interior of the refrigeration house. In order to meet the requirement of the cooling bridge, the length of the polyurethane foam layer 6 is greater than or equal to 600mm, specifically 650mm, 700mm, 750mm and the like, and the thickness is greater than or equal to 50mm, specifically 60mm, 70mm and the like. The polyurethane foaming layer 6 has the combustion performance of B1 level, has certain fireproof capacity, and meets the fireproof requirement while resisting heat. The outer wall cladding of polyurethane foam layer 6 has aluminum alloy layer 7 for protection polyurethane foam layer 6, and aluminum alloy layer 7's thickness is 0.6mm, certainly can also be 0.5mm, 0.8mm etc. as long as can wrap up polyurethane foam layer 6 and make polyurethane foam layer 6 keep stable.

According to requirements, the wall penetrating pipe 2 is a metal pipe, specifically a stainless steel pipe and the like, and preferably, the wall penetrating pipe 2 is an SC thick-wall hot-galvanized steel pipe with strong corrosion resistance. The inner holes at the two ends of the wall penetrating pipe 2 are plugged through the plugging layers 9, and after plugging, the sealing performance can be ensured. Blocking layer 9 can adopt various viscidity materials like sealed glue etc. preferably, and blocking layer 9 is the mixture of fire prevention daub and sealed glue, and the fire prevention daub has fire behavior, can guarantee freezer safety, can satisfy sealed requirement simultaneously.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fire prevention, anti-cold bridge cable wall structure for freezer, including wall body (1), wall pipe (2) and cable (3), be provided with the threading through-hole on wall body (1), wall pipe (2) run through the threading through-hole, cable (3) run through wall pipe (2), its characterized in that:

The outer wall of the wall penetrating pipe (2) is wrapped with a basalt fiber fireproof cloth layer (4), and a part, located in the threading through hole, of the basalt fiber fireproof cloth layer (4) is plugged with the inner wall of the threading through hole through a first sealing glue layer (5);

The outer wall of the part, located on the outer side of the wall body (1), of the basalt fiber fireproof cloth layer (4) is wrapped with a polyurethane foam layer (6), and the outer wall of the polyurethane foam layer (6) is wrapped with an aluminum alloy layer (7);

And inner holes at two ends of the wall penetrating pipe (2) are plugged through a plugging layer (9).

2. The fireproof and cold-bridge-proof cable wall penetrating structure for the refrigeration house according to claim 1, characterized in that: the basalt fiber fireproof cloth layer (4) is two layers, and the thickness of each layer is 3 mm.

3. the fireproof and cold-bridge-proof cable wall penetrating structure for the refrigeration house according to claim 1, characterized in that: the inner end face of the basalt fiber fireproof cloth layer (4) is plugged through a second sealing glue layer (8).

4. The fireproof and cold-bridge-proof cable wall penetrating structure for the refrigeration house according to claim 1, characterized in that: the length of the polyurethane foaming layer (6) is more than or equal to 600mm, and the thickness of the polyurethane foaming layer is more than or equal to 50 mm.

5. The fireproof and cold-bridge-proof cable wall penetrating structure for the refrigeration house according to claim 1, characterized in that: the polyurethane foaming layer (6) has the combustion performance of B1 grade.

6. The fireproof and cold-bridge-proof cable wall penetrating structure for the refrigeration house according to claim 1, characterized in that: the blocking layer (9) is a mixture of fireproof daub and sealant.

7. The fireproof and cold-bridge-proof cable wall penetrating structure for the refrigeration house according to claim 1, characterized in that: the wall penetrating pipe (2) is an SC thick-wall hot-dip galvanized steel pipe.

8. The fireproof and cold-bridge-proof cable wall penetrating structure for the refrigeration house according to claim 1, characterized in that: the thickness of the aluminum alloy layer (7) is 0.6 mm.