CN2232634Y

CN2232634Y - Double heat insulation fireproof pallet

Info

Publication number: CN2232634Y
Application number: CN 95226609
Authority: CN
Inventors: 钟江晖
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-11-27
Filing date: 1995-11-27
Publication date: 1996-08-07
Anticipated expiration: 2005-11-27

Abstract

The utility model relates to a double-layer heat insulation type fireproof pallet which relates to fireproof devices for cables. The double-layer heat insulation type fireproof pallet comprises a heat insulating body and a girder supporting rack. The double-layer heat insulation type fireproof pallet is characterized in that the heat insulating body is divided into two layers, and the outer side of the outer layer and the inner side of the inner layer are coated with expanding coating layer; the girder supporting rack is formed by a thin-wall round pipe and a supporting members. The heat insulating body can radiate heat and ventilate wind at normal time, and under the action of the outside flame, the two heat insulating layers foam simultaneously to insulate heat. The utility model has the advantages of convenient installation, light weight, low cost, favorable heat insulating effect, wide using range, etc.

Description

Double thermal insulation formula firing tray

The utility model relates to the cable fire-proof system that a kind of common cable is used, and belongs to the electric fireproof technical field, is applicable in the hazardous area usefulness of fireproofing of cable protection.

The loss of tremendous economic that cable fire causes occurs repeatedly both at home and abroad, and only China just surmounts 10,000,000,000 yuan, therefore electric bound pair this put on agenda the research fire Countermeasure urgently.

Show that from electrical fire accident analysis both domestic and external the ignition of cable accident that causes from outside burning things which may cause a fire disaster accounts for about 3/4ths, this has just shown the importance that should have prevention to catch fire to cable.

The measure that prevents ignition of cable in existing technology divides following a few class substantially:

1, adopts fire-resisting cable.2, adopt composite material to make the fire-resistant groove box that the lining courage is made.

Fire-resisting cable except that can only resisting fire, costs an arm and a leg, and is restricted on engineering is promoted.

Fire-resistant groove box is a kind ofly to make matrix with outer steel shell, in establish the wind courage that inorganic composite materials constitutes, yet there are no so far, make the fire-resistant groove box of air type that heat insulation inner bag constitutes without composite material, and present domestic and international fire-resistant groove box all because of costing an arm and a leg, the volume heaviness is subjected to the limitation that engineering is promoted.

The purpose of this utility model provides a kind of light-duty double-deck heat-insulating firing tray of all steel system of making inner bag without composite material, it adopts two layers of adiabatic way that heat-barrier material foams simultaneously, good ventilation condition is arranged when possessing operate as normal, when the ambient temperature superelevation, have adiabatic effect again concurrently, guarantee that cable can normally move when fire.

The purpose of this utility model is achieved in that double thermal insulation formula firing tray, comprises insulator and purlin support, and wherein insulator is divided into two layers, between two layers appropriate gap is arranged.The compound expansion dope layer is removed in inboard at the outer field outside and stratification of wind.Insulator can be made of shell and returning fire plate, and shell is made

Shape, midfeather punching out convex pane, and with the uniform group of determining deviation hole, returning fire plate is turtleback, also with the uniform group of determining deviation hole, the size of returning fire plate curvature of the spinal column face is corresponding with the convex pane on the shell, constitutes one with appropriate gap between the two for curvature of the spinal column face.

The purlin support is made up of thin-wall circular tube and support, at a distance of suitable distance heat-insulating cushion block is set on support, to reduce the local influence of heat conduction to cable.Heat insulation hot piece is made up of the thermosetting glass fibre.

The utility model adopts two layers of adiabatic foaming layer to foam simultaneously and plays a role in insulation, and has improved fire resistance property greatly.Adopt lightweight lush purlin bracket supports cable, lightweight and portable in volume, easy for installation, with low cost, use widely, have good social effect and economic benefit.

Below in conjunction with drawings and Examples the utility model is described in detail.

Fig. 1 is a structural front view of the present utility model,

Fig. 2 is a structure vertical view of the present utility model,

Fig. 3 is a section of structure of the present utility model,

Fig. 4 is truss structure figure of the present utility model,

Fig. 5 is a stereogram of the present utility model.

Comprise shell (1), returning fire plate (2) purlin support (3) referring to figs. 1 through Fig. 4 the utility model, shell is made earlier by the 1mm thick cold rolled steel sheet Shape.The dark 0.5mm of midfeather punching press convex pane, returning fire plate is with the uniform diameter 3mm of determining deviation relief hole.Shell (1) and returning fire plate (2) the 10mm spacing of being separated by constitutes one, inboard all coated G60-KG of the outside of shell (1) and returning fire plate (2) expansion coating of preventing fires.Purlin support (3) is by the adiabatic cushion block of book wall seamless steel pipe (4) supporting member (5) formations such as (6).Usefulness in order to supporting cable and fixed housing.

The characteristics of this double-deck heat-insulating firing tray are to adopt two layers of adiabatic foaming layer to foam simultaneously to play a role in insulation, and reach the fireproof optimum efficiency, for this new construction advantage clearly is described, and the below effect of summary each parts when fire.

When double-deck heat-insulating firing tray in flame interaction following time, the expansion coating that flame at first acts on shell (1) shell this moment begins expanded foamed, part flame is scurried to returning fire plate (2) in the diameter 6mm hole by shell (1), the 10mm spacing because returning fire plate (2) and shell (1) are separated by, and by numerous apertures release heat powers, therefore flame can be in this chamber mixed flow and begin to expand with the foaming layer effect of returning fire plate coated, because the foaming thickness of foaming layer is tens times of former coating, cause to form two layers of adiabatic foaming layer in the chamber of the outside of shell (1) and shell and returning fire plate, its formed fine and close sponge shape layer plays fabulous effect of heat insulation.When making extraneous flame temperature be 950 ℃ of left and right sides, the air themperature of pallet inside is no more than 100 ℃.Purlin support (4) is unsettled in insulator central authorities by fulcrum, because the conduction of heat of a small amount of securing member, backing temp can be slightly higher, and heat-insulating cushion block (6) has extremely low conductive coefficient causes the cable on heat-insulating cushion block can local heating.Can satisfy insulate in the flame can not damage, and keeps normally operation more than 1 hour.

Claims

1, a kind of double thermal insulation formula firing tray comprises insulator and purlin support, it is characterized in that insulator is divided into two layers, between two layers appropriate gap is arranged, at the inboard coated expansion coating layer of the outer field outside and internal layer.

2, double thermal insulation formula firing tray as claimed in claim 1 is characterized in that insulator is made of shell and returning fire plate, and shell is made

Shape, midfeather punching out convex and square, and with the uniform group of determining deviation hole, returning fire plate is turtleback, also with the uniform group of determining deviation hole, the size of returning fire plate curvature of the spinal column face is corresponding with the convex pane on the shell, constitutes one with appropriate gap between the two for curvature of the spinal column face.

3, as claim 1,2 described double thermal insulation formula firing trays, it is characterized in that the purlin support is made up of thin-wall circular tube and support, on support, heat-insulating cushion block is set at a distance of suitable distance.

4, double thermal insulation formula firing tray as claimed in claim 3 is characterized in that heat-insulating cushion block is made up of the thermosetting glass fibre.

5, double thermal insulation formula firing tray as claimed in claim 2 is characterized in that shell and returning fire plate are combined into one by steel thin plate, and the group's bore dia on the shell on the convex pane at interval is 6mm, and the diameter in returning fire plate curvature of the spinal column face cogroup hole is 3mm.