CN216377968U

CN216377968U - Explosion venting plate

Info

Publication number: CN216377968U
Application number: CN202120592396.9U
Authority: CN
Inventors: 熊友春; 胡瑞华
Original assignee: Jiangxi Xiongyu Group Co ltd
Current assignee: Jiangxi Xiongyu Group Co ltd
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2022-04-26
Anticipated expiration: 2031-03-24

Abstract

The utility model discloses an explosion venting plate, wherein a plate body is composed of hollow core bodies and composite foam concrete, the hollow core bodies are arranged in two rows in parallel and are mutually and vertically staggered, the periphery and two ends of each hollow core body are filled with the composite foam concrete, and two surfaces of the plate body are planes. The utility model has better explosion venting capability, can be split into maximum 1CM or dust particles when encountering shock waves generated by explosion, and can not cause great harm to human bodies and property.

Description

Explosion venting plate

Technical Field

The utility model relates to a building material, which is suitable for plates of an explosion-proof pressure-relief wall body and an explosion-relief roof, in particular to an explosion-relief plate.

Background

Explosion prevention is an important function of building construction, particularly, at present, buildings in cities and towns are higher and denser, the damage degree caused by explosion is effectively controlled within a certain range, personal injury and property loss caused by explosion are reduced, and the damage result is minimized, so that the explosion prevention is a crucial problem in current city construction. The existing measures are usually to build a heavy blast wall, and the blast wall is usually composed of brick walls or reinforced concrete walls, and the blast wall can prevent the rapid spread of flame within a certain range, but if an explosion occurs, the blast wall has poor explosion-proof capability and can be broken in large blocks because the blast wall cannot bear shock waves generated during the explosion. Moreover, the brick or reinforced concrete explosion-proof wall also has the defects of large floor area, high building cost and the like. Therefore, the explosion-proof board with waterproof, sound-proof, explosion-proof and heat-insulating performances is produced.

The existing Chinese patent discloses an autoclaved aerated concrete explosion venting plate and a manufacturing method thereof (publication number: 111424839) and a manufacturing method thereof. The peripheral frame is a closed-loop frame body formed by a plurality of side plates in a surrounding mode, and the ends of the steel wires on the sides of the supporting screen plate correspondingly extend and are fixed to the connecting holes of the side plates. When explosion happens, impact air waves formed by explosion are blocked by the concrete layer and can collapse rapidly, so that the pressure in the chamber is relieved, and secondary damage is avoided. However, the concrete explosion venting plate has limited indoor pressure relief by means of collapse, and can only be used for indoor explosion venting and cannot be applied to the wall structure of a building.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides an explosion venting plate, which solves the problem that the fragment has larger kinetic energy in the process of flying out due to larger impact force generated at the moment of explosion, so that the pressure in a chamber is relieved, the possible damage to nearby equipment or pipelines is prevented, and the larger damage is prevented.

In order to achieve the purpose, the utility model adopts the following technical scheme. A plate body of the explosion venting plate is composed of hollow core bodies and composite foam concrete, the hollow core bodies are arranged in two rows in parallel and are vertically staggered with each other, the interval between the hollow core bodies is the diameter of one hollow core body, the composite foam concrete is filled between the hollow core bodies and at two ends of each hollow core body, and two surfaces of the plate body are planes; and magnesium oxysulfate cement is blocked at two ports of the hollow core body.

Further, the hollow core body is circular, hexagonal or square.

Further, the hollow core body is a hollow or foaming structural part.

The utility model has better explosion venting capability, can be split into maximum 1CM or dust particles when encountering shock waves generated by explosion, and can not cause great harm to human bodies and property.

Drawings

FIG. 1 is a schematic view of the present invention in partial cross-section;

FIG. 2 is a schematic sectional view taken along line A-A of FIG. 1;

in the figure: 1. plate body, 11 hollow core body, 12 composite foam concrete.

Detailed Description

The present invention is further described below. A plate body 1 of the explosion venting plate is composed of hollow core bodies 11 and composite foam concrete 12, the hollow core bodies 11 are arranged in two rows in parallel and are mutually and vertically staggered, the interval between the hollow core bodies 11 is the diameter of one hollow core body 11, the composite foam concrete 12 is filled between the hollow core bodies 11 and at two ends, and two surfaces of the plate body 1 are planes. The hollow core body 11 is circular, hexagonal or square. The hollow core 11 may be a hollow or foamed structure. The composite foam concrete 12 is formed by adding a special foaming agent into magnesium oxysulfate cement and mixing.

The manufacturing steps of the explosion venting plate are as follows:

1) prefabricated hollow core 11 components: spraying a release agent on the periphery of a metal strip inner part, and wrapping the fiber mesh cloth on the periphery of the inner part; coating magnesium oxysulfate cement on the fiber mesh cloth wrapped on the inner piece, taking out the inner piece after the cement is naturally cured and shaped to prepare a hollow body 11, and plugging two ports of the hollow body 11 by the magnesium oxysulfate cement; the inner profile may also be a metal post.

2) Spraying a release agent on the inner periphery of the mold, fixedly arranging the hollow core bodies 11 by using iron wires, and placing the hollow core bodies into the mold;

3) the adopted component proportions are respectively as follows: 48 percent of magnesium oxysulfate cement, 12 percent of animal protein foaming agent, 4 percent of aluminate accelerator and 36 percent of water are stirred to prepare the composite foam concrete 12.

4) Gradually injecting composite foam concrete 12 into the mold box from inside to outside, moving the mold table to a vibration platform after the whole mold is poured, starting a platform vibrator, and controlling the vibration time within 3 minutes;

5) placing the poured member in a pre-curing kiln, controlling the temperature to be 35-40 ℃ and the time to be 3 hours; then sending the precured component into a curing kiln, setting the curing time for 6 hours, controlling the heating speed according to the temperature rise of 15 ℃ per hour, setting the highest temperature to be less than 85 ℃, setting the spraying moisture once every half hour, and finally exiting the curing kiln for natural cooling;

6) and (5) removing the mould box to finish the manufacture of the plate body 1, and inspecting and warehousing.

The strength of the composite foam concrete 12 is about 1.0, the composite foam concrete is obtained by adding animal protein foaming agent into magnesium oxysulfate cement, mixing and using physical foaming technology, when the composite foam concrete meets shock waves generated by explosion, the composite foam concrete can be split into maximum 1CM or dust particles, and the material does not cause great harm to human bodies and property.

The composite foam concrete is prepared by adding special foaming agent into magnesium oxysulfate cement and mixing, and the main raw material of the foam concrete is the magnesium oxysulfate cement. Because the foam concrete is mostly cured at normal temperature and is doped with a large amount of foam, the cement proportion is determined to be higher. This is fundamentally different from aerated concrete. The aerated concrete is autoclaved, and the gelatinization is generated mainly by the hydration reaction of the fly ash and the lime under high temperature and high pressure, and the cementIs auxiliary. The composite foam concrete is produced at normal temperature, the active micro-aggregate can not generate hydration reaction quickly, and the fixed foam still depends on the gelation of cement, so the mixing proportion of the foam concrete must use cement as a main body and adopt high cement mixing proportion. In general, the dosage of cement is 50-100% of the total amount of dry materials, and 50% is the lowest limit dosage for normal temperature curing. When in-situ pouring, the proportion of the cement accounts for more than 80 percent of the total amount of the dry materials. 600 kg/m³The proportion of the cement in the foam concrete with the density below the normal temperature can not be lower than 70 percent of the total amount of the materials. When the density is 400 kg/m³When the amount of the additive is less than the above range, the normal temperature ratio should be more than 90%, preferably 100% of the total amount of the dry materials.

Claims

1. The explosion venting plate is characterized in that a plate body is composed of hollow cores and composite foam concrete, the hollow cores are arranged in two rows in parallel and are mutually vertically staggered, the interval between the hollow cores is the diameter of one hollow core, the composite foam concrete is filled between the hollow cores and at two ends of the hollow cores, and two surfaces of the plate body are planes; and magnesium oxysulfate cement is blocked at two ports of the hollow core body.