CN2241314Y

CN2241314Y - Steel frame hung cast refractory furnace top structure for refractory test furnace

Info

Publication number: CN2241314Y
Application number: CN 95216232
Authority: CN
Inventors: 边庆策; 史毅
Original assignee: AIR CONDITION INST CHINA CONSTRUCTION SCIENCE RESEARCH INST
Current assignee: AIR CONDITION INST CHINA CONSTRUCTION SCIENCE RESEARCH INST
Priority date: 1995-07-18
Filing date: 1995-07-18
Publication date: 1996-11-27
Anticipated expiration: 2005-07-18

Abstract

The utility model relates to a steel frame hung refractory castable furnace top structure for refractory testing furnaces, being composed of the steel frame, a steel fiber refractory castable precasted block and a hanging device. The edge frame and the hanging cross beam of the steel frame are fabricated by channel steel and are welded with ears. The steel fiber refractory castable precasted block whose side wall is stuck with a layer of aluminium-silicate ceramic fiber is buried with a hanging ring beforehand. The hanging device is composed of a threaded rod with a hanging hook, a spring, a shim and a nut. The utility model simplifies the design and manufacture of protection steel structure of a furnace body, and has the advantages of good fire insulating and heat insulating performance, simple structure, convenient construction, easy maintenance, good combination performance, long service life, etc.

Description

The fire test furnace steel framework is hung the castable refractory top construction

A kind of fire test furnace steel framework is hung the castable refractory top construction, belongs to building element fire resistance test device.

Fire test furnace is the main testing equipment of Building Fire Protection industry, and its top construction is the important component part of fire test furnace.

Existing fire test furnace top construction has: (1) vault construction, (2) monolithic pouring precast block structure and (3) refractory fibre furnace roof.

Shortcoming:

(1) vault construction: occupy bigger height space, the arch angle produces bigger horizontal thrust, during Proper Design, needs to bear this power with pull bar.

(2) monolithic pouring precast block structure:,, when size is big, can not use so make its bending strength less because of unsuitable embedded bar in the castable refractory.

(3) refractory fibre furnace roof: the long-term use is easy to efflorescence, need often to change, and cost is higher.

The purpose of this utility model is to overcome above-mentioned shortcoming, provide a kind of simple in structure, easy for installation, be easy to safeguard, the fire resistant heat preserving performance is good, bending strength is high, the fire test furnace top construction that can be made into the large span size and can use for a long time.

Used technical scheme: this fire test furnace steel framework is hung the castable refractory top construction, by steel framework, the steel fibre castable refractory gives clamp dog and erecting by overhang is formed.Steel framework is hung crossbeam by frame, and the lifting hanger is formed; Each is relative with notch with two channel-section steels for the four edges of frame, and abdomen is pulled to stand up and is welded, and its cross section is a hollow rectangle; Hang crossbeam and adopt the channel-section steel notch downward, web is upwards laterally placed, and the plane is concordant with frame four limits on the web, is welded in the long limit of frame; The lifting hanger is porose iron plate, and quantity is no less than four, is welded in the appropriate location of the inboard, long limit of frame.The steel fibre castable refractory gives clamp dog and is formed by steel fibre castable refractory cast, and what be embedded with right quantity bends the suspension ring that form by round bar, is stained with one deck high temperature modification alumina-silicate refractory fibre blanket on this gives the sidewall of clamp dog.Erecting by overhang includes the screw rod of suspension hook, compression spring, nut and pad, and the suspension hook of screw rod passes suspension ring and the steel fibre castable refractory is given clamp dog is hung on the channel-section steel web of hanging crossbeam, and screw rod passes this web and passes spring and pad, uses nut screwing clamping.

Top construction of the present utility model has refractory heat-insulating performance preferably, and uses maximum vault constructions relatively, can save 30%～60% height space, and not have horizontal thrust, has simplified the design and fabrication that body of heater is gone along with sb. to guard him steel construction.With monolithic pouring precast block structure relatively, this kind top construction has mechanical property preferably, can be made into large-size, has increased the service life and the security of furnace roof, with the refractory fibre furnace roof relatively, it is low to have a cost, the advantage that need not often change.Advantages such as in addition, top construction of the present utility model also has simple in structure, and easy construction is easy to safeguard, associativity is good.

Now the utility model is described in further detail in conjunction with the accompanying drawings:

Fig. 1 is the assembly drawing of the utility model top construction, for partly cuing open front view.

Fig. 2 is the front view of the steel framework among Fig. 1, is the 2-2 cutaway view of Fig. 3.

Fig. 3 is the vertical view of Fig. 2.

Fig. 4 is the front view that the fire-resistant pouring material of steel fibre gives clamp dog among Fig. 1.

Fig. 5 is its vertical view.

Fig. 6 is its side view.

Fig. 7 is the erecting by overhang assembly drawing among Fig. 1.

Fig. 8 is embodiment of the present utility model.

Fire test furnace steel framework of the present utility model is hung castable refractory top construction (referring to Fig. 1) and being comprised: steel framework (1), steel fibre castable refractory prefabricated section (2) and erecting by overhang (3).According to the furnace roof size, prefabricated section can be formed by several, and seam crossing is stained with one deck high temperature alumina-silicate refractory fibre blanket (4) between the prefabricated section, and steel framework (1) (is seen Fig. 2, Fig. 3) used the channel-section steel welding production.By frame (5), hang crossbeam (6), lifting hanger (7) is formed, hangs to be equipped with the hole (8) of adorning the suspension hook screw rod on the crossbeam, steel framework is not more than L/400 by maximum defluxion and carries out designing and calculating.

Steel fibre castable refractory prefabricated section (2) (seeing Fig. 4 to Fig. 6), form by the cast of steel fibre castable refractory, according to its dimensional structure, pre-buried right quantity bend the suspension ring (9) that form by Ф 10 round bars, prefabricated section thickness should be according to trial furnace ruuning situation, calculate and get through the thermal technology, generally get 200～350mm.For making between the prefabricated section seam tight, should on the sidewall of prefabricated section, be stained with one deck high temperature modification alumina-silicate refractory fibre blanket (4), the erecting by overhang (see figure 7) comprises suspension hook screw rod (10), compression spring (11), nut (12) and pad (13), Fig. 8 is embodiment of the present utility model, is used for the organigram of vertical fire test furnace for described top construction.

Claims

1. a fire test furnace steel framework is hung the castable refractory top construction, and by steel framework (1), the steel fibre castable refractory gives clamp dog (2) and erecting by overhang (3) is formed, and it is characterized in that:

A. steel framework (1) by frame (5), hang crossbeam (6), the lifting hanger (7) form; Each is relative with notch with two channel-section steels for the four edges of frame (5), and web stands up and is welded, and its cross section is a hollow rectangle; It is downward with the notch of channel-section steel hanging crossbeam (6), and web is upwards laterally placed, and the plane is concordant with steel framework four limits on its web, is welded in the long limit of frame (5), and the through hole (8) of dress suspension hook screw rod is arranged on the crossbeam (6); Lifting hanger (7) is porose iron plate, and quantity is no less than four, is welded in the appropriate location of the inboard, long limit of frame (5);

B. the steel fibre castable refractory gives clamp dog (2) and is formed by steel fibre castable refractory cast, and what be embedded with right quantity bends the suspension ring (9) that form by round bar, is stained with one deck high temperature modification alumina-silicate refractory fibre blanket (4) on the sidewall that gives clamp dog (2);

C. erecting by overhang (3) includes screw rod (10), compression spring (11), nut (12) and the pad (13) of suspension hook, the suspension hook of screw rod (10) passes suspension ring (9) and the steel fibre castable refractory is given clamp dog is hung on the channel-section steel web of hanging crossbeam (6), screw rod (10) passes the through hole (8) of this web, and pass spring (11), pad (13), tighten with nut (12).