Five-layer composite explosion venting board and manufacturing method thereof

Abstract

The invention relates to the technical field of explosion venting plates for construction and building materials, and mainly discloses a five-layer composite explosion venting plate and a manufacturing method thereof.The five-layer composite explosion venting plate comprises a fireproof thermal insulation filler and a composite explosion venting back plate and a honeycomb plate which are arranged on the two sides of the fireproof thermal insulation filler, and the honeycomb plate comprises a honeycomb core and a honeycomb back plate and a composite explosion venting panel which are arranged on the two sides of the honeycomb core; one side of a honeycomb back plate of the honeycomb plate is connected with the fireproof heat preservation filler, a first bent part is arranged on the side edge of the composite explosion venting back plate, a second bent part is arranged on the side edge of the composite explosion venting panel, the first bent part and the second bent part are bonded through sealant, and a frame is arranged on the peripheral edge of the honeycomb plate. The five-layer composite explosion venting plate manufactured by the method solves the problems of poor sealing and waterproof effects caused by rock wool leakage, poor flatness and influence on beauty in the prior art, and meets the performance requirements of the existing metal explosion venting plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building materials, and particularly relates to a five-sandwich composite explosion venting plate and a manufacturing method thereof. BACKGROUND

[0002] The explosion venting plate is an important product for preventing fire and explosion, which adopts high-efficiency fireproof material and explosion-proof design. When the pressure in the system exceeds the predetermined value, the explosion venting plate can automatically break to release the pressure, thereby avoiding equipment damage or explosion. The explosion venting plate can quickly play a role when a fire or explosion occurs, protecting the safety of people's lives and property.

[0003] The explosion venting plate material is mainly divided into metal and non-metal. The metal explosion venting plate is usually made of stainless steel, copper, aluminum and other metals, and has the characteristics of high pressure resistance, high hardness, light weight, etc. In a high-temperature and high-pressure environment, it can withstand a large pressure impact without deformation or damage. The metal explosion venting plate is suitable for occasions with corrosion resistance, high pressure, high temperature and complex fluid medium. The non-metal explosion venting plate is usually made of special fiber materials, ceramic materials, fluororesin and other materials, and the surface is treated with PTFE (polytetrafluoroethylene) material coating. It has good temperature resistance, corrosion resistance, chemical resistance and other properties. The non-metal explosion venting plate is widely used in chemical and viscous medium.

[0004] The main uses of the explosion venting plate include explosion-proof pressure relief wall and explosion venting roof. Its working principle is that when an explosion occurs indoors, the explosion pressure is closed, and then the critical pressure is released through the explosion venting plate. At the same time, by blocking the quality and explosive shape of the explosion debris and the buffer force, the probability of personal injury and property loss caused by explosion shock wave and explosion debris can be reduced. In addition, the explosion venting plate can also control and isolate the fire caused by the explosion to prevent the surrounding buildings from being affected. The installation of such a plate is simple, which only needs to be fixed on the wall surface.

[0005] In the prior art, as shown in Chinese invention patent CN106988459A, a common metal explosion venting plate usually includes a three-layer structure, i.e. a fireproof and heat-insulating rock wool and metal plates arranged on both sides of the fireproof and heat-insulating rock wool. Generally, the three-layer structure of the metal explosion venting plate is made by bonding. First, the side of the metal explosion venting plate made by the manufacturing method is bare rock wool, which affects the waterproof and sealing effect of the wall body, and an additional sealing strip is needed for sealing during installation. The sealing with the sealing strip has the following defects: complicated installation steps, insufficient sealing strength, easy damage and poor appearance. Second, the existing metal explosion venting plate is deformed due to installation or other reasons, so that the flatness of the metal plate on the outdoor side is not good, affecting the appearance. Finally, with the development of various industries, the performance requirements of the metal explosion venting plate are getting higher and higher, including the strength, quality, pressure relief, fire resistance limit, sealing performance, fireproof and heat-insulating performance and heat-insulating performance of the wall body after installation. The existing metal explosion venting plate cannot meet the existing process requirements. SUMMARY

[0006] The purpose of the present application solves the technical problems existing in the prior art, and provides a five-sandwich composite explosion venting plate, which solves the problems of poor sealing and waterproof effect caused by rock wool leakage in the prior art, and poor flatness affecting the appearance, and meets the performance requirements of the existing metal explosion venting plate.

[0007] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a five-sandwich composite explosion venting plate, comprising a fireproof and heat-insulating filler and composite explosion venting back plates and honeycomb plates arranged on both sides of the fireproof and heat-insulating filler, the honeycomb plate comprising a honeycomb core and composite explosion venting face plates arranged on both sides of the honeycomb core, one side of the honeycomb back plate of the honeycomb plate being connected with the fireproof and heat-insulating filler, the side edge of the composite explosion venting back plate being provided with a first bending part, the side edge of the composite explosion venting face plate being provided with a second bending part, and the combination of the first bending part and the second bending part being bonded by sealing glue.

[0008] A further scheme of the present application is that a frame is arranged between the fireproof and heat-insulating filler and the first bending part, and a frame is arranged between the honeycomb core and the second bending part.

[0009] A further scheme of the present application is that the frame and the first bending part of the composite explosion venting back plate are connected by rivets, and the frame and the second bending part of the composite explosion venting face plate are connected by rivets.

[0010] A further scheme of the present application is that a plurality of back ribs are uniformly arranged above the honeycomb back plate, both ends of the back rib are connected with two opposite frames on the first bending part of the composite explosion venting back plate, the bottom of the back rib is connected with the honeycomb back plate by rivets, and both ends of the back rib are connected with two opposite frames on the first bending part of the composite explosion venting back plate by rivets.

[0011] Further, the composite explosion venting panel, the honeycomb core and the honeycomb back plate are connected by adhesive, and the two ends of the honeycomb core are respectively connected to the composite explosion venting panel and the honeycomb back plate.

[0012] Further, the honeycomb core is an aluminum honeycomb core.

[0013] Further, the fireproof and heat-insulating filling material can be one of rock wool board, glass wool board, polyurethane and aerogel, and preferably, the fireproof and heat-insulating filling material is the rock wool board.

[0014] Further, the material of the composite explosion venting panel, the honeycomb back plate and the composite explosion venting back plate can be one of aluminum plate and steel plate, and preferably, the material is the aluminum plate. Further, the composite explosion venting panel and / or the composite explosion venting back plate is coated with a decorative material layer in a pattern.

[0015] A preparation method of a five-sandwich composite explosion venting panel, comprising the following steps: S1. cutting a flat aluminum plate into a composite explosion venting panel, a composite explosion venting back plate and a honeycomb back plate by using a numerical control punch or a laser cutting machine; S2. forming the composite explosion venting panel, the composite explosion venting back plate and the honeycomb back plate into a required shape by using a numerical control bending machine; S3. hot-pressing the composite explosion venting panel, the honeycomb core and the honeycomb back plate by using a two-component polyurethane glue to process a honeycomb panel; S4. riveting a frame and a back rib to the honeycomb panel to form a grid, attaching a rock wool board to the grid, and then connecting a composite explosion venting back plate to the grid by using a rivet; S5. applying a sealant to the joint between the composite explosion venting panel and the composite explosion venting back plate.

[0016] Compared with the prior art, the present application has the following advantages: This invention provides a five-layer composite explosion venting panel, which consists of a honeycomb core, a honeycomb back panel, and a composite explosion venting panel. The honeycomb core and back panel improve the flatness of the composite explosion venting panel, while increasing overall strength and reducing weight. By setting a frame around the honeycomb panel to form a box-like structure, the frame solves the technical problems of poor sealing effect and good flatness around the explosion venting panel. The five-layer composite explosion venting panel made using the above method has good performance and meets existing process requirements. The five-layer composite explosion venting panel not only has the functionality of an explosion venting panel but also has a decorative function. Factory prefabrication reduces the difficulty of on-site construction and reduces labor and material costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A cross-sectional view of a decorative Gomeiji composite explosion relief panel provided for this application; Figure 2 For this application Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0019] In the diagram: 1. Composite explosion venting back panel, 2. Fireproof and heat-insulating filler, 3. Honeycomb panel, 4. Frame, 5. Composite explosion venting panel, 6. Honeycomb core, 7. Honeycomb back panel, 8. Mounting bracket, 9. Rivet, 10. Sealant, 11. First bend, 12. Second bend. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figure 1 As shown, a five-layer composite explosion relief panel includes a fireproof and heat-insulating filler 2 and a composite explosion relief back plate 1 and a honeycomb panel 3 disposed on both sides of the fireproof and heat-insulating filler 2.

[0022] The honeycomb panel 3 includes a honeycomb core 6, a honeycomb back plate 7 disposed on both sides of the honeycomb core 6, and a composite explosion-proof panel 5. The composite explosion-proof panel 5, the honeycomb core 6, and the honeycomb back plate 7 are bonded together with adhesive. The openings at both ends of the honeycomb core 6 face the composite explosion-proof panel 5 and the honeycomb back plate 7, respectively. One side of the honeycomb back plate 7 of the honeycomb panel 3 is connected to the fireproof and heat-insulating filler 2. Preferably, the honeycomb core 6 is made of aluminum.

[0023] The adhesive bonding can use thermosetting adhesives such as two-component polyurethane adhesive, epoxy resin adhesive or acrylic adhesive. Among them, two-component polyurethane adhesive is preferred due to its excellent permeability and strength after curing, which makes the bonding effect more stable.

[0024] like Figure 2 As shown, the composite explosion venting backplate 1 has a first bending portion 11 on its side, and the composite explosion venting panel 5 has a second bending portion 12 on its side. The joint between the first bending portion 11 and the second bending portion 12 is bonded together with sealant 10.

[0025] A frame 4 is provided between the fireproof and heat-insulating filler 2 and the first bent portion 11, and a frame 4 is provided between the honeycomb core 6 and the second bent portion 12. The frame 4 is connected to the first bent portion 11 of the composite explosion-proof back plate 1 by rivets 9, and the frame 4 is connected to the second bent portion 12 of the composite explosion-proof panel 5 by rivets 9.

[0026] This technical solution achieves multiple technical effects through a five-layer composite structure. Fire-resistant and heat-insulating filler provides core fireproof and heat-insulating functions, while the composite explosion-venting back panels and honeycomb panels on both sides form a double protective layer. The sandwich structure of the honeycomb panels enhances overall strength, the bending sections combined with sealant achieve side sealing, and the frame and rivet connections ensure a stable connection between each layer. Compared with existing technologies, this solution simplifies the installation process by replacing traditional sealing strips with the combination of bending sections and sealant; the honeycomb panel structure keeps the outer panel flat and aesthetically pleasing; and the five-layer composite design significantly improves the overall structural strength, sealing, and fire resistance while ensuring explosion-venting functionality. Specifically, the bending sections effectively prevent insulation material exposure, the application of sealant improves side sealing, the honeycomb structure enhances the panel's resistance to deformation, and the frame and rivet connections ensure overall structural stability.

[0027] A further aspect of the present invention is that a plurality of back ribs are evenly distributed on the upper part of the honeycomb back plate 7 along its length direction, the two ends of the back ribs are connected to two opposing frame edges 4 on the opposite short side of the first bent portion 11 of the composite explosion venting back plate 1, the bottom of the back ribs is connected to the honeycomb back plate 7 by rivets 9, and the two ends of the back ribs are connected to two opposing frame edges 4 on the first bent portion 11 of the composite explosion venting back plate 1 by rivets 9.

[0028] The backbones can be made of metal profiles, such as angle steel, channel steel or I-beam, with cross-sectional shapes of L, U or I. The arrangement spacing of the backbones is set according to the force requirement, usually 300-600mm. The rivets can be blind rivets or solid rivets. The connection position of the backbones and the honeycomb backboard can be set at the compartment junction of the honeycomb core to enhance the carrying capacity of the riveting point. The connection of the two ends of the backbones and the frame can adopt symmetrical arrangement or staggered arrangement, which is adjusted according to the frame structure design.

[0029] The technical scheme establishes a rigid connection network between the honeycomb backboard and the composite explosion venting backboard through the grid distribution of the backbones. The backbones act as force transmission members to effectively transmit the force of the honeycomb backboard to the frame of the composite explosion venting backboard, forming a multi-point support structure. The riveting fixing method ensures the connection strength and prevents connection failure caused by vibration or impact. The triangular support structure formed by the backbones and the two side frames significantly improves the overall deformation resistance. Compared with the prior art, this structure solves the deformation problem of the traditional explosion venting plate caused by insufficient interlayer connection, optimizes the force transmission path, and enhances the local connection strength and overall stability.

[0030] The fireproof and heat-insulating filler 2 can be selected from one of rock wool board, glass wool board, polyurethane and aerogel, and preferably, the fireproof and heat-insulating filler 2 is rock wool board.

[0031] The rock wool board is made of natural minerals such as basalt, which is fiberized after high-temperature melting. The glass wool board uses quartz sand as the main raw material, which is fiberized after melting and centrifugation, and then solidified and formed by adding a binder. Aerogel is prepared by supercritical drying process. The rock wool board can use vertical cotton laying process to make its fiber direction perpendicular to the board surface to enhance the compressive strength; the glass wool board can improve the waterproof performance by covering aluminum foil on the surface; the polyurethane material can use on-site spraying or prefabricated board construction; the aerogel can be used with fiber reinforced materials to improve mechanical strength. In addition, the thickness of each material can be adjusted according to the fireproof rating requirements. The explosion venting plate can be flexibly configured according to different engineering scene requirements. Among them, the rock wool board is suitable for chemical plants with strict fireproof performance requirements; the glass wool board is suitable for commercial buildings that need to consider sound insulation effect; the polyurethane material is suitable for steel structure buildings that are sensitive to weight; and the aerogel is suitable for occasions with limited space but high thermal insulation performance requirements.

[0032] The material of the composite explosion vent panel 5, the honeycomb back plate 7 and the composite explosion vent back plate 1 can be selected from one of an aluminum plate and a steel plate. The aluminum plate is the best choice and is light in weight. Specifically, the aluminum plate can adopt an aluminum alloy series such as 1060 and 3003; and the steel plate can adopt a carbon steel series such as Q235B and SPCC. As a preferred embodiment, the surface of the aluminum plate can be subjected to an anodic oxidation treatment to enhance corrosion resistance, and the surface of the steel plate can be subjected to a galvanizing or plastic spraying treatment to prevent rust. In addition, the connecting edges of each plate material can be provided with a bending structure with a bending angle preferably being 90°-135°, so as to facilitate subsequent sealing treatment during assembly.

[0033] A further aspect of the present application is that the composite explosion vent panel 5 and / or the composite explosion vent back plate 1 is sprayed with a decorative material coating forming a pattern.

[0034] The decorative material coating can adopt a weather-resistant material such as fluorocarbon paint, polyester paint or ceramic coating, and the patterning treatment is achieved by a silk screen printing, digital inkjet printing or transfer printing process. This technical solution adds a decorative layer to the visible surface of the explosion vent panel, so that the functional panel has both architectural aesthetic value.

[0035] A preparation method of a five-sandwich composite explosion vent panel, comprising the following steps: S1. A flat aluminum plate material is cut into a composite explosion vent panel 5, a composite explosion vent back plate 1 and a honeycomb back plate 3 by using a numerical control punch press or a laser cutting machine; S2. The cut composite explosion vent panel 5, the composite explosion vent back plate 1 and the honeycomb back plate 3 are formed into a desired shape by using a numerical control bending machine; S3. The formed composite explosion vent panel 5, a honeycomb core 6 and the honeycomb back plate 3 are hot-pressed and combined by using a two-component polyurethane glue at 60-80°C to process into a honeycomb plate 3; S4. A frame 4 and a back rib are riveted to the honeycomb plate 3 by using a rivet 9 to form a box-shaped grid, and a rock wool plate is attached in the grid, and then the composite explosion vent back plate 1 is connected by using the rivet 9; S5. Sealant 10 is applied at the joint between the composite explosion vent panel 5 and the composite explosion vent back plate 1; Finally, aluminum alloy mounting corner codes 8 are installed around the explosion vent panel.

[0036] The five-sandwich composite explosion vent panel made by using the above method has a good improvement in quality, pressure relief, fire resistance limit, sealing performance, fireproof and heat insulation performance and wall strength after installation compared with the prior art.

[0037] The explosion vent panel of the present application is detected and tested by using the standard in GB / T23932-2009, and the following performance dimensions are significantly improved, and the specific beneficial effects are as follows: 1. Enhanced structural stability and mechanical performance Bonding strength and peeling performance: the test data show that the product bonding strength reaches 0.05 MPa (standard requirement ≥ 0.03 MPa), and the peeling performance reaches 95% (standard requirement ≥ 85%).

[0038] The present application further strengthens the interlayer bonding force by the design of hot-pressing composite honeycomb plate, frame and rivet connection of the front plate / back plate, avoids the delamination risk in long-term use, and ensures that the explosion vent plate can still maintain structural integrity under high pressure impact.

[0039] Bending resistance: the test result is 1.96 kN / m² (standard requirement ≥ 0.5 kN / m²), which is much higher than the benchmark value.

[0040] The grid-like support structure of the honeycomb core and the back rib cooperates to make the plate not easy to deform when bearing self-weight, wind pressure or explosion impact force, solves the flatness problem of traditional explosion vent plate caused by metal plate deformation, and improves the appearance and structural safety after installation.

[0041] 2. Fireproof and fire-resistant performance meets the standard Combustion performance level: the test confirms that it reaches A (A1) level of non-combustibility, the mass loss rate is only 9% (standard ≤ 50%), and the total heat value is 1.0 MJ / kg (standard ≤ 2.0 MJ / kg).

[0042] The present application selects rock wool board as fireproof and heat preservation filling, cooperates with the metal barrier effect of aluminum honeycomb core, can effectively inhibit the spread of flame in high temperature environment, and meets the strict requirements of building fireproof specification for high-risk areas.

[0043] Fire resistance limit: after 60 minutes of test, the average temperature rise of the back fire surface is 70.9℃ (standard ≤ 140℃), the maximum temperature rise is 77.7℃ (standard ≤ 180℃), and there is no continuous flame or crack.

[0044] The frame sealing and composite layer design delays the heat transfer speed, which provides key time for personnel evacuation and equipment protection in fire, and is better than the fire resistance performance of traditional three-layer structure explosion vent plate.

[0045] 3. Optimization of heat preservation and sealing performance Heat transfer coefficient: the test value is 0.56 W / (m²・K) (standard ≤ 0.61 W / (m²・K)), and the heat preservation effect is excellent.

[0046] The fireproof and heat preservation filling and the air cavity structure of the honeycomb core form a double heat insulation layer, which reduces the building energy consumption; at the same time, the sealing adhesive bonding design of the first bending part and the second bending part completely solves the problem of poor waterproof sealing caused by the exposure of rock wool in traditional plate, and avoids the decline of heat preservation performance or structure corrosion caused by rainwater penetration.

[0047] 4. Production and installation efficiency is improved The size deviation (length +1mm, width +1mm, thickness 0mm) in the detection report is far less than the standard allowable range (±5mm, ±2mm, ±2mm), which shows that the numerical control cutting and bending process of the application can precisely control the size precision.

[0048] The factory prefabricated production reduces the on-site processing link, the modular connection design of the frame and the rivet simplifies the installation steps, reduces the labor cost, and at the same time ensures the consistency of the batch products.

[0049] It is apparent to those skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments, and that the application can be implemented in other particular forms without departing from the spirit or essential characteristics of the application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered to be a limitation on the scope of the claims.

Claims

1. A five-layer composite explosion venting plate, characterized in that: It includes a fireproof and heat-insulating filler (2) and a composite explosion-proof back plate (1) and a honeycomb panel (3) disposed on both sides of the fireproof and heat-insulating filler (2). The honeycomb panel (3) includes a honeycomb core (6) and a honeycomb back plate (7) and a composite explosion-proof panel (5) disposed on both sides of the honeycomb core (6). One side of the honeycomb back plate (7) of the honeycomb panel (3) is connected to the fireproof and heat-insulating filler (2). The side of the composite explosion-proof back plate (1) is provided with a first bending part (11), and the side of the composite explosion-proof panel (5) is provided with a second bending part (12). The first bend (11) and the second bend (12) are bonded together with sealant (10); a frame (4) is provided between the fireproof and heat-insulating filler (2) and the first bend (11), and a frame (4) is provided between the honeycomb core (6) and the second bend (12); the frame (4) is connected to the first bend (11) of the composite explosion venting back plate (1) by rivets (9), and the frame (4) is connected to the second bend (12) of the composite explosion venting panel (5) by rivets (9).

2. The five-layer composite explosion relief plate according to claim 1, characterized in that: The honeycomb back plate (7) is provided with several back ribs evenly distributed on the top. The two ends of the back ribs are connected to the two opposing frame edges (4) on the first bend (11) of the composite explosion venting back plate (1). The bottom of the back ribs is connected to the honeycomb back plate (7) by rivets (9). The two ends of the back ribs are connected to the two opposing frame edges (4) on the first bend (11) of the composite explosion venting back plate (1) by rivets (9).

3. The five-layer composite explosion venting plate according to claim 2, characterized in that: The composite explosion venting panel (5), honeycomb core (6) and honeycomb back plate (7) are bonded together with adhesive, and the two ends of the honeycomb core (6) face the composite explosion venting panel (5) and the honeycomb back plate (7) respectively.

4. A five-layer composite explosion venting plate according to any one of claims 1-3, characterized in that: The honeycomb core (6) is made of aluminum.

5. The five-layer composite explosion relief plate according to claim 4, characterized in that: The fireproof and heat-insulating filler (2) can be made of one of the following materials: rock wool board, glass wool board, polyurethane, or aerogel.

6. The five-layer composite explosion relief plate according to claim 5, characterized in that: The composite explosion venting panel (5), honeycomb back plate (7) and composite explosion venting back plate (1) can be made of either aluminum plate or steel plate.

7. A five-layer composite explosion venting plate according to any one of claims 1-6, characterized in that: The composite explosion venting panel (5) and / or composite explosion venting back panel (1) are coated with a decorative material coating that forms a pattern.

8. A method for manufacturing a five-layer composite explosion venting plate according to any one of claims 2-7, characterized in that: The steps include: S1. Cut the flattened aluminum sheet into the required composite explosion relief panel (5), composite explosion relief back panel (1), and honeycomb back panel (3) using a CNC punching machine or laser cutting machine. S2. The cut composite explosion relief panel (5), composite explosion relief back plate (1), and honeycomb back plate (3) are formed into the required shapes by a CNC bending machine; S3. The formed composite explosion relief panel (5), honeycomb core (6) and honeycomb back panel (3) are hot-pressed together with two-component polyurethane adhesive to form a honeycomb panel (3). S4. Rivet the frame (4) and backing to the honeycomb plate (3) with rivets (9) to form a grid. After attaching the rock wool board inside the grid, cover it with the composite explosion relief backing plate (1) and connect it with rivets (9). S5. Apply sealant (10) to the joint between the composite explosion venting panel (5) and the composite explosion venting back plate (1).

Images