1125 results about "Fire resistance" patented technology

A wood or engineered wood structural panel, such as, but not limited to, OSB (“oriented strand board”) or plywood, that is both fire-resistant and water resistant. The panel is factory-coated with a product that provides fire resistance. The treatment gives it a Fire-Resistant (FR) performance (for use in a one- or two-hour rated assembly). The panel also is overlaid or coated in a factory setting with a weather / water resistive barrier (WRB). The structural panel thus combines a fire-resistant structural sheathing and WRB product in one integrated panel produced at a factory prior for installation at a job site.

The invention discloses a preparation method of a B1-grade flame-retardant fire-resistant control cable, belongs to the technical field of flame-retardant fire-resistant cables, and aims to solve the technical problem that the mechanical strength and the fire-resistant and flame-retardant performance of an inorganic flame-retardant modified fire-resistant fire-resistant control cable in the prior art need to be further improved. The method comprises the following steps that a plurality of cable cores are arranged in parallel, gaps among the cable cores are filled with filling ropes to form filling layers, the cable cores filled with the filling layers are wrapped together through a wrapping tape, and a wrapping layer is formed outside the cable cores. According to the invention, maleic anhydride modified polyethylene is used as a phase solvent, and polyethylene is cross-linked and enhanced by modified graphite and modified polysiloxane, so that not only is the mechanical strength of the cable material effectively improved, but also the fire resistance and flame retardance of the cable material are improved.

The invention relates to the technical field of cables, and provides a fireproof flame-retardant 10kV power cable and a preparation method thereof. The fire-resistant flame-retardant 10kV power cable comprises a conductor and a fire-resistant flame-retardant layer, the fireproof flame-retardant layer is prepared from the following raw materials in parts by weight: 35 to 45 parts of linear low-density polyethylene, 40 to 50 parts of ethylene-vinyl acetate copolymer, 25 to 30 parts of modified aluminum hydroxide, 5 to 8 parts of polyethylene grafted maleic anhydride, 10 to 12 parts of phosphate modified halloysite nanotube, 5 to 8 parts of ZIF-8 loaded zinc borate core-shell particles, 15 to 20 parts of magnesium hydroxide and 2 to 3 parts of silane coupling agent. 0.5 to 1 part of antioxidant, 0.5 to 1 part of calcium stearate and 1 to 1.5 parts of polyethylene wax. According to the cable prepared in the invention, the situation that a conductor is exposed and the fire resistance is lost due to cracking and falling under long-time high-temperature baking is avoided; the continuous effectiveness of the flame retardant at high temperature is improved.

The invention relates to the technical field of safety control, in particular to an intelligent control method and system for disaster coping with a wind-resistant and fire-resistant rolling shutter door, and the method comprises the following steps: extracting and calculating a wind speed difference value and a temperature gradient value based on a wind speed sensor signal and a temperature sensor signal of the rolling shutter door, carrying out the attribution classification through combining the load pressure data at the two sides of a door curtain, and comparing and judging with the node state of the roller shutter door to obtain a node disaster response priority index. According to the method, the wind speed difference value and the temperature gradient are calculated by extracting wind speed and temperature signals, multi-node cooperation is ensured, transmission shaft operation parameters, infrared signals and the pressure state are analyzed, the operation state is mastered in real time, the power of the transmission shaft is dynamically adjusted to improve adaptability and stability, output of a driving motor and configuration of sealing parameters are optimized, and the sealing performance is improved. The roller shutter door can keep balance between operation and sealing performance under strong wind and high temperature, wind resistance and fire resistance are remarkably improved, disaster loss is reduced, and response efficiency and safety protection capacity are enhanced.

In order to solve the problems of heat conduction, excessive ceramization, influence on the performance of a part which is not subjected to a fire disaster and increase of maintenance cost, an armored protection layer and a separation assembly are arranged at an interval, and the separation assembly is of a continuous broken-line-shaped tubular structure, so that the bending difficulty of the cable can be reduced, and the cable is suitable for being laid in a narrow and small space; the partition assembly comprises a folding cavity, an outer layer shell and an inner layer shell, a V-shaped groove is formed in the downward bending position of the outer layer shell, ceramization powder accounting for two thirds of the volume of the outer layer shell is contained in the V-shaped groove, the powder can enter the folding cavity after a plugging piece in a side circulation hole is heated and melted, and according to the design, ceramization reaction spreading is controlled through a sectional structure, thermal stress concentration is relieved, and the service life of the ceramic is prolonged. The heat insulation effect is enhanced, continuous work of the cable in a fire disaster is guaranteed, the problem of flexibility reduction caused by unnecessary ceramization is avoided, and construction flexibility and fire-resistant reliability are both considered.

The invention discloses an underground comprehensive pipe gallery electric power cabin plugging selection method based on a fire situation, and relates to the technical field of urban underground management. According to the method, FDS fire dynamics simulation software is utilized to construct a blocked underground utility tunnel electric power cabin full-size model and a non-blocked underground utility tunnel electric power cabin full-size model, fire spreading conditions under the two models are simulated, extinguishing time and fire spreading images are recorded, and fire evolution under different conditions is determined; based on the extinguishing time and the fire spreading image, whether plugging is carried out or not is selected, the safety and fireproof performance of the underground comprehensive pipe gallery power cabin are improved, further spreading of the fire is stopped in time, the resident safety is improved, social resources are guaranteed, follow-up reconstruction is facilitated, and resource waste is reduced.

The application provides a large-span bridge substructure vehicle-fire wind force real-time hybrid test platform and implementation method, the platform comprises a physical loading and transmission system, a T-shaped wind-fire coupling simulation system, a modularized prying integrated system, an intelligent control and calculation system and a multi-dimensional high-precision monitoring system. The method realizes real-time pre-test of the boundary displacement / force of the test piece through the construction of a numerical substructure fast calculation model based on LSTM and converts the boundary displacement / force into a loading instruction to drive the through core jack to realize thermal force coupling interactive loading; the T-shaped wind-fire coupling simulation system reproduces the real vehicle fire scene under the influence of the environmental wind. The test platform supports independent loading of any component of the cable system, can execute open space self-defined fire test and closed space standard fire test, and accurately analyzes the cable failure mode, critical temperature threshold and damage evolution law under fire through the multi-dimensional high-precision monitoring system, thereby providing a high-fidelity test platform and analysis method for fire resistance design of large-span bridges.

Embodiments relate to a flame barrier that may be adhered or mechanically fastened to a substrate to provide fire resistance and / or an outer protective surface. The flame barrier may alternatively be adhered or mechanically fastened to an existing flame barrier to provide increased fire resistance and / or increased protective ability. The flame barrier is configured to protect against high temperature flames, prevent flame penetration, and contain aggressive flames to reduce the severity of the flame's impact, heat, and velocity.

The invention discloses a high-temperature-resistant flame-retardant carbon fiber cable and an intelligent preparation method thereof, and relates to the technical field of power cables, and the cable is composed of a composite bearing core, a first / second electrical isolation belt, a stranded conductor, an annular composite bearing layer, a high-temperature-resistant main insulator and a low-smoke halogen-free outer sheath. The force bearing core is formed by bundling carbon fiber micro rods, elastic reset layers are arranged between the micro rods, micro-particle friction layers are formed on the outer surfaces of the micro rods, and a stable friction-rebound interface is constructed. A fire-resistant barrier, a phase change microcapsule filling layer and a fiber bragg grating can be arranged, and fire resistance, thermal peak suppression and on-line monitoring are considered. And closed-loop control of pultrusion, surface activation, coating and on-line thickness measurement / friction test is carried out in the manufacturing process. The cable can be operated at 200 DEG C for a long time and at 250 DEG C for a short time, the residual elongation is less than or equal to 0.10%, and light weight, high strength, high temperature resistance, low smoke and flame retardance are realized.

The utility model discloses a fire-fighting wire with high shear resistance, and belongs to the technical field of fire-fighting cables. The fire-fighting electric wire with the high shear resistance comprises an inner core layer, the inner core layer is composed of a battery cell and an inner mica layer, the outer portion of the inner core layer is connected with a functional layer in a wrapping mode, the functional layer comprises an isolation layer, the outer side of the isolation layer is connected with an outer mica layer in a wrapping mode, the outer side of the functional layer is connected with a shear resistance layer in a wrapping mode, and the shear resistance layer comprises an annular wire hoop. The outer side of the wire is provided with a wire hoop, the outer side of the wire hoop is provided with anti-shearing metal wires in a circumferential array mode, the anti-shearing metal wires and the wire hoop are connected in a hot melting mode, the anti-shearing layer is connected with an outer layer in a wrapping mode, the outer layer comprises a rubber layer, and the anti-shearing layer is located in the rubber layer. And the inner mica layer and the outer mica layer are utilized, so that heat insulation protection can be conveniently carried out on the internal battery core, and the fire resistance during use is improved.

The invention discloses flame-retardant green concrete added with expandable graphite and a preparation method of the flame-retardant green concrete, and relates to the technical field of fireproof materials. The expansible graphite cement comprises the following components: cement, aggregate, expansible graphite and water, the mass ratio of the water to the cement is (0.4-0.5): 1, and the addition proportion of the expansible graphite is 1%-10% of the total weight of the cement. According to the expansible graphite flame-retardant concrete provided by the invention, the special material expansible graphite is utilized, the fireproof performance and the heat insulation performance of the concrete can be remarkably improved, and the expansible graphite forms a heat insulation layer through expansion in a high-temperature environment, so that concrete cracking or structural damage caused by a fire disaster is effectively prevented; and the fire resistance and the safety of the building structure are obviously improved. The simple and economical production process is designed, the proportion of the expansible graphite to other raw materials is properly adjusted, so that the production process of the concrete is environment-friendly and efficient, meanwhile, the production cost is effectively reduced, the requirements of modern green buildings are met, and wide application prospects are achieved.

The invention provides a blast risk early warning system and a flame arrester for petrochemical engineering, and relates to the technical field of risk early warning, the system comprises an in-pipe state prediction module used for generating a preset in-pipe distributed state network; the external state prediction module is used for generating a preset external distributed state network; the real-time monitoring module is used for generating an in-pipe real-time state network and an external real-time state network; the fire blast risk point location identification module is used for generating a first risk point location; the fire-retardant simulation module is used for generating a first fire-retardant failure index and a second fire-retardant failure index; and the failure early warning module is used for generating early warning information. The technical problems that in the prior art, due to the poor monitoring effect and lack of real-time performance evaluation of the flame arrester, the failure accident of the flame arrester cannot be predicted in time, and the fire blast risk early warning accuracy is poor can be solved, and the technical effects that the early warning accuracy is improved, and fire blast accidents are prevented from being expanded are achieved.

The invention discloses a production method of nano-silicon composite fireproof glass, which comprises the following steps: compounding amino nano-silicon dioxide with a modified zinc-aluminum flame retardant to prepare a coated silicon-based filler, and compounding the coated silicon-based filler with nickel-titanium bimetal MOF to obtain a composite silicon-based flame-retardant filler; the preparation method comprises the following steps: mixing a mixed solution of silica sol, water-soluble silicone oil, a composite silicon-based flame-retardant filler, potassium hydroxide and sodium hydroxide with ethylene glycol, filling laminated glass with the mixed solution, and sealing and curing to obtain the nano-silicon composite fireproof glass. The nano-silicon composite fireproof glass has high light transmittance and high fire resistance, the zinc-aluminum flame retardant and the nickel-titanium bimetal MOF which have flame retardance are compounded on the nano-silicon dioxide to obtain a composite silicon-based flame-retardant filler, and the zinc-aluminum flame retardant and the nickel-titanium bimetal MOF generate a synergistic effect through compounding of a multi-layer core-shell structure, so that the flame-retardant performance of the nano-silicon composite fireproof glass is improved, and the flame-retardant performance of the nano-silicon composite fireproof glass is improved. The flame-retardant and fire-resistant performance of the composite silicon-based flame-retardant filler is improved, and the influence of the flame retardant on the light transmission of the nano-silicon composite fireproof glass is reduced.

The invention discloses a material fire resistance detection device and a use method thereof, and relates to the technical field of fire resistance detection devices. The detection box is provided with a cable positioning mechanism used for fixing a cable. A fire-resistant detection mechanism is arranged in the detection box; the fire resistance detection mechanism comprises a conveying pipe; the flame nozzle is mounted at the annular part of the conveying pipe; and a detection position adjusting mechanism. The detection position adjusting mechanism is arranged, the driving mechanism is used for driving the flame nozzle to move along the conveying pipe, the position, facing the circumference of the cable, of the flame nozzle is accurately adjusted, and therefore adjustment of different fireproof detection positions is achieved; a fire nozzle is adjusted in the fire resistance detection process, and the burning state of the cable when the position of a fire source is changed by wind power is simulated; various fire-resistant states of the cable in actual use are simulated, the accuracy and reliability of fire-resistant detection are improved, and it is ensured that the test result can truly reflect the fire-resistant performance of the cable.

The invention discloses an application method of fireproof thermal insulation materials with different fire resistance grades on an ocean vessel, and relates to the technical field of ships. The laying thicknesses of the fireproof heat-insulation materials are different according to the fire resistance grade, the material type and the ship body laying position of the fireproof heat-insulation materials. According to different fireproof grades, material types, ship body laying positions and laying thicknesses of the fireproof heat insulation materials, the fireproof heat insulation materials with different thicknesses can be arranged under different conditions, the weight and cost of the ship can be reduced, and meanwhile the heat insulation and fireproof performance is guaranteed.

The utility model discloses a high-flame-retardant fireproof power cable, relates to the technical field of power cables, solves the problems that a device is only provided with a substance with water-blocking performance, does not have fireproof capability, and cannot keep a power supply line continuously, safely and stably running under a flame condition, and comprises a first cable. According to the utility model, the outer side of the cable is sleeved with the low-smoke halogen-free polyolefin sheath, so that the wire cable can be protected when a fire disaster occurs, the harm of harmful substances such as smoke and toxic gas generated by the wire cable in the fire disaster to a human body is reduced, the transmission performance of the wire cable is ensured, the fire-resistant time is further prolonged, and the service life of the wire cable is prolonged. And the cross-linked polyethylene insulating layer is protected by the flame-retardant sheath layer, so that the flame-retardant time is further prolonged, the cable has higher fire resistance, and the problems that the device is only provided with a water-blocking substance, does not have fire resistance and cannot keep a power supply line continuously, safely and stably running under a flame condition are solved.

The present invention discloses a fireproof steel structure for construction, which belongs to the technical field of building materials. A fireproof steel structure for construction, comprising a fireproof steel body, characterized in that a fireproof coating is provided on the outer surface of the fireproof steel body, a thermal insulation layer is provided on one side of the fireproof coating, a cavity pipe is provided inside the fireproof steel body, a spray pipe is provided on the outer surface of the fireproof steel body, and a first spray head is fixedly connected to one side of the spray pipe; the present invention can effectively prevent fire and resist high temperature by providing a fireproof coating, a thermal insulation layer and a cavity pipe, thereby increasing the fire resistance time, providing precious time for disaster relief and fire fighting, avoiding the deformation of the steel structure due to the failure to put out the fire in time, ensuring the structural safety of the factory building, and thus effectively reducing the loss, and can generate flowing water by providing a spray pipe and a connecting pipe.

To provide a renovation fitting which includes existing frames having metal exterior parts, metal interior parts, and thermal-insulating connecting members located between the exterior parts and the interior parts, and which can ensure fire resistance.SOLUTION: A renovation fitting 1 includes: existing frames 21, and 22 to be attached to an opening of a building structure 100; new frames 31, and 32 that are attached to the inner circumference of the existing frames 21, 22, and include metal exterior parts 311, and 321 metal interior parts 312, and 322, and thermal-insulating connecting members 313, and 323 that are placed between the metal exterior parts 311, and 321 and the metal interior parts 312, and 322; and separation prevention fittings 8, and 35 for connecting the outdoor parts 311, and 321 and the indoor parts 312, and 322.SELECTED DRAWING: Figure 3