338 results about "Fire resistance" patented technology

The invention relates to the technical field of cable manufacturing, and discloses a low-carbon environment-friendly low-voltage fireproof cable which sequentially comprises a cable core, a metal heat transfer layer, a ceramic halogen-free low-smoke heat insulation layer, a metal fire blocking layer and a halogen-free low-smoke outer sheath layer from inside to outside. The cable core comprises a plurality of insulating wire cores and a ceramic halogen-free low-smoke flame-retardant material filled in external gaps of the insulating wire cores, each insulating wire core sequentially comprises a conductor, a high-temperature-resistant mica layer and an insulating layer from inside to outside, the high-temperature-resistant mica layer is tightly coated on the surface of the conductor, and the insulating layer is coated on the surface of the insulating layer. The insulating layer is made of a ceramic silicone rubber material, and the ceramic halogen-free low-smoke flame-retardant material and the ceramic halogen-free low-smoke thermal insulation layer both contain inorganic filler capable of forming a ceramic hard shell at high temperature. According to the cable, by adopting a combined structure of the high-temperature-resistant mica layer and the ceramic silicone rubber insulating layer, the fireproof grade of the cable is improved.

The invention relates to a UHPC-based fabricated fire-fighting smoke exhaust fan room structure and a construction method thereof, the room structure comprises a main body structure, and the main body structure is prefabricated by adopting an ultra-high performance concrete UHPC material; a fan is arranged in the internal space of the main body structure; the main body structure is provided with a machine room enclosure bulkhead cylinder body and an end cover side wall. Wherein the machine room enclosure bulkhead cylinder body is provided with a bottom plate, a first side wall and a second side wall, the first side wall and the second side wall are connected with the bottom plate and vertically arranged in parallel, and a first opening end and a second opening end which are oppositely arranged are arranged at the two ends of the machine room enclosure bulkhead cylinder body in the horizontal direction respectively; the end cover side wall is provided with a first end cover and a second end cover which are respectively arranged at the first opening end and the second opening end; the first end cover and the second end cover are each provided with a smoke suction and exhaust port, and the smoke suction and exhaust ports are used for being connected with a ventilation pipeline. The UHPC shell is adopted, the advantages of being high in strength and good in fire resistance are achieved, the prefabricated assembly type structure is adopted, construction is convenient, and efficiency is high.

The invention discloses handheld steel fireproof door fireproof performance in-situ nondestructive testing equipment and a use method, and belongs to the technical field of fireproof door fireproof performance determination. In order to solve the problems that an existing method lacks an effective in-situ nondestructive testing means and the actual fire resistance of a fireproof door in use cannot be accurately judged, handheld in-situ nondestructive testing equipment for the fire resistance of the steel fireproof door is designed, during testing, electric suction cups on the two sides of the equipment are adsorbed to the fireproof door, and a laser sensor rapidly measures the thickness of the fireproof door; the ultrasonic eddy-current sensor is used for measuring fireproof door steel plate thickness; the X-ray sensor is used for measuring the compactness of the fireproof door filling material by using the X-ray propagation time; and comparing the measured data with a qualified fireproof door to obtain the fireproof performance of the measured fireproof door. Compared with the original fireproof door sampling detection equipment and method, the equipment and method can realize portable in-situ nondestructive detection, quickly judge the performance of the fireproof door, prevent inferior products from entering the market and protect the property and life safety of people.

The invention discloses a flame-retardant, low-smoke and halogen-free environment-friendly high-voltage power cable, which relates to the technical field of high-voltage power cables and comprises a central conductor, the central conductor is externally coated with an internal insulation protection layer, and the outer side of the central conductor is sequentially coated with an insulation shielding layer, a waterproof silica gel isolation layer and an outer rubber protection layer. The outer side of the outer rubber protection layer is coated with a flexible deformation silica gel layer, the flame erosion and spreading process is intercepted through active falling of the flame-retardant rubber clamping pieces, heat is taken away in the falling process of the flame-retardant rubber clamping pieces, and a local fire insulation belt is formed; and meanwhile, in the subsequent maintenance process of the cable, corresponding fusing separation adhesive tapes and flame-retardant rubber cards need to be replaced to complete repair, so that the overall fireproof performance of the cable is improved, and the cable is protected in different degrees in different degrees of fire environments by utilizing a strategy of coping with fire disasters through layer-by-layer separation, so that the service life of the cable is prolonged, and the service life of the cable is prolonged. And the maintenance cost of the cable is effectively reduced.

This invention discloses a prefabricated fireproof and thermally insulated sandwich wall panel and its manufacturing method. The key technical points are: the prefabricated fireproof and thermally insulated sandwich wall panel includes an inner concrete leaf wall, a sandwich insulation layer, and an outer leaf wall panel, wherein the sandwich insulation layer is located between the inner concrete leaf wall and the outer leaf wall panel. This invention achieves integrated structural, thermal insulation, and decorative functions; reduces weight by more than 20% while maintaining the same energy-saving effect; improves energy-saving performance by more than 30% under the same thickness conditions; effectively reduces the thermal bridging effect of the exterior wall panel; and improves the fire resistance limit of prefabricated components under fire or high-temperature conditions.

When the upper part of the door body 1 is subjected to the heat of a fire and warps and deforms in a direction that separates it from the door frame 3, the leak of flames and smoke through the resulting gap is prevented, thereby improving fire resistance. [Solution] An upper recessed groove 4c is provided in the upper horizontal frame member 4 of the door frame 3 facing the door body 1. An upper sealing member 9, a spring 12, and a heat-deformable member 11 are provided in the upper recessed groove 4c. When the heat of a fire is applied, the heat-deformable member expands and deforms, causing the upper sealing member 9 to come into contact with the interior side panel 1e of the door body, which has warped due to the heat deformation.

The present application relates to waste gas treatment technical field, especially to a kind of direct combustion incinerator water seal fire stopper anti-backfire system and application, including incinerator, combined combustor, waste gas source, waste gas fan, water seal fire stopper main body, desalted water source, desalted water injection component, boundary butterfly valve, waste gas pipeline first hand valve, waste gas pipeline second hand valve, waste gas pipeline third hand valve, waste gas pipeline fourth hand valve, flammable alarm instrument LEL, waste gas pipeline switch valve, water seal fire stopper air inlet pipeline, water seal fire stopper air outlet pipeline and water seal fire stopper burst disc;Water seal fire stopper air inlet pipeline and water seal fire stopper air outlet pipeline are all arranged on water seal fire stopper main body, waste gas source is connected with waste gas fan by pipeline, solve the technical problem that the anti-backfire mode in prior art encounters deflagration backfire or high concentration waste gas impact, fire resistance reliability is insufficient, easily failure due to filter element damage, cannot effectively block flame back to upstream pipeline and device.

The invention belongs to the technical field of new materials, and provides an aerogel composite insulation board as well as a preparation method and application thereof. The aerogel composite insulation board is prepared from the following raw materials in parts by weight: 100 parts of an inorganic cementing material, 4.5 to 10 parts of polystyrene foam particles, 0.6 to 1.8 parts of silicon dioxide aerogel powder, 3 to 6 parts of silica sol and 80 to 110 parts of water, the inorganic cementing material comprises Portland cement, gypsum and calcium hydroxide. The aerogel composite insulation board is low in heat conductivity coefficient, high in compressive strength and excellent in fire resistance and flame retardance, meets the increasingly high building energy-saving and fireproof safety requirements at present, and is a novel building energy-saving insulation material with great development prospects.

This utility model provides a fire door with ventilation function, including a door leaf, a door frame, and a ground layer. The door frame stands on the ground layer, and the door leaf is embedded in the door frame and connected to the door frame by hinges. The lower half of the door leaf is embedded with a fire-resistant device, which includes a ventilation blade frame, ventilation blades, fire-resistant blade shafts, fire-resistant blades, a temperature sensor, and a transmission mechanism. Fire-resistant blades are arranged within the ventilation blade frame by several equidistantly spaced fire-resistant blade shafts. The temperature sensor and transmission mechanism are located on one side of the ventilation blade frame. The temperature sensor is communicatively connected to the transmission mechanism, which drives several fire-resistant blade shafts to rotate synchronously, thereby opening and closing the fire-resistant blades to achieve rapid switching between normal ventilation and fire isolation functions. This utility model aims to solve the problems of poor ventilation performance, easily damaged ventilation devices, and poor fire resistance and sealing of traditional fire doors, thereby optimizing ventilation performance, improving the durability of ventilation devices, and enhancing fire resistance.

The invention discloses a matching device for fire resistance testing and an operation method. The matching device comprises a fire resistance testing furnace, a fire resistance testing frame and a moving trolley used for transferring the fire resistance testing frame. The fire-resistant test frame is used for setting a tested sample; a plurality of supporting columns are arranged on the fire resistance test frame; a supporting piece is arranged on the fire-resistant test furnace and is used for conveniently fixing or separating the fire-resistant test frame supporting column; the mobile vehicle comprises a vehicle body device, a wheel device, a supporting structure and a fixed bracket device; the wheel device is arranged below the vehicle body device and used for transferring the position of the vehicle body device; the supporting structure is arranged on the vehicle body device and is used for supporting the fire resistance test frame; the fixed bracket device is arranged on the vehicle body device and comprises a fixed bracket, and the fixed bracket is used for supporting a supporting column of the fire resistance test frame. According to the matching device and the operation method, the safety and the high efficiency of the fire resistance testing process of the tested sample can be improved.

This utility model provides a double-sided composite fireproof and heat-insulating board, relating to the technical field of fireproof and heat-insulating boards. It includes a wall, a moisture-proof component, and a protective component. A board is provided on one side of the wall, and a pressure plate is provided on the side of the board away from the wall. A moisture-proof layer is fixedly connected to one side of the pressure plate, and a fireproof layer is fixedly connected to one side of the moisture-proof layer. This double-sided composite fireproof and heat-insulating board, through the inclusion of the moisture-proof component, provides the following benefits during use: the pressure plate is impact-resistant and windproof; the moisture-proof layer prevents water vapor from entering the interior of the insulation board; the fireproof layer provides fire resistance and heat insulation; the insulation layer is used for the insulation core material; the vacuum layer improves the insulation performance; and the adhesive layer facilitates board installation. This achieves the effect of improving the device's moisture-proof performance, avoiding the situation where high humidity in the air during the rainy season in southern regions, coupled with indoor dampness, allows moisture to easily enter the core material, leading to internal moisture absorption and increased thermal conductivity.

The invention relates to the technical field of wires and cables, and discloses a complex electromagnetic interference resistant, bending resistant, flame retardant and fire resistant control cable. The cable sequentially comprises a composite functional conductor, a flame-retardant fire-resistant insulating layer, a fire-resistant wrapping layer, a composite shielding layer, a low-smoke halogen-free flame-retardant inner sheath, a flexible reinforced shielding layer and a low-smoke halogen-free flame-retardant outer sheath from inside to outside, and the composite shielding layer comprises a metal wire woven shielding layer and a metal belt wrapping shielding layer; the composite functional conductor comprises a conductive metal wire and a functional metal wire; the material of the flame-retardant fire-resistant insulating layer comprises a fluoropolymer material containing an inorganic ceramic filler; the flexible reinforced shielding layer comprises a metal conductive component and high-elasticity fibers; according to the invention, through conductor functional design, fire-resistant mechanism cooperation and multi-layer shielding structure optimization, stable work of the control cable in a complex electromagnetic environment, dynamic bending and fire working conditions is realized.

The invention relates to the technical field of cross-linked polyethylene insulated power cables, and provides a low-voltage fire-resistant cross-linked polyethylene insulated power cable, which comprises a conductor cable core, a flame-retardant mechanism, a heat dissipation buffer mechanism and an outer sheath, and is characterized in that the conductor cable core is sleeved with a cross-linked polyethylene insulating layer, the flame-retardant mechanism is sleeved on the cross-linked polyethylene insulating layer, and the heat dissipation buffer mechanism is sleeved on the outer sheath. The flame-retardant mechanism is internally provided with a plurality of miniature material storage assemblies capable of spraying a cooling flame retardant, the flame-retardant mechanism is sleeved with the heat dissipation buffer mechanism, the air supply cooling mechanism is detachably arranged on one side of the heat dissipation buffer mechanism in a sealed mode, and the heat dissipation buffer mechanism is sleeved with the outer sheath. According to the technical scheme, the problems that although a low-voltage fire-resistant cross-linked polyethylene insulated power cable in the prior art has certain fire resistance, the heat dissipation performance of the cable is further affected, and the heat dissipation efficiency is poor are solved.

The invention discloses a high-durability reinforced concrete structure, and relates to the technical field of reinforced concrete structures. Comprising four grouting steel pipes parallel to one another, the four sets of grouting steel pipes are evenly distributed in the circumferential direction, and a transverse fixing steel plate is connected between every two adjacent grouting steel pipes; binding steel bars are arranged on the inner sides of the four grouting steel pipes, and concrete is poured; sandwich structures are arranged on the outer sides of the four grouting steel pipes and the transverse fixing steel plates. The steel column filled with concrete outside the reinforced concrete structural member is combined with traditional reinforced concrete with bundled reinforcing steel bars embedded inside, the reinforced concrete structural member is structurally combined, so that the reinforced concrete structural member has the advantages of being good in anti-seismic performance, high in durability, excellent in fire resistance and the like, in addition, by arranging the anti-corrosion layer, the corrosion resistance of the metal member is improved, and the service life of the metal member is prolonged. Meanwhile, under the structural design, the anti-corrosion layer isolates corrosion permeation, the strength of the steel bars and the profile steel components is effectively guaranteed for a long time, damage is avoided, and it is better guaranteed that the reinforced concrete structure has the high durability characteristic.

The application provides a metal carved plate with fire resistance, relates to the technical field of metal carved plates, and comprises a metal plate, a combination device fixedly installed on the side wall of the metal plate, a gypsum layer, a fire-resistant layer, a heat-insulating layer, an aluminum foil protective layer, a mounting port, a rotating shaft, a mounting block, a butt joint port, a butt joint hole and a fixing bolt, the gypsum layer is fixedly installed on the side wall of the metal plate, the side wall of the gypsum layer is fixedly connected with the fire-resistant layer, the side wall of the fire-resistant layer is fixedly connected with the heat-insulating layer, the side wall of the heat-insulating layer is fixedly connected with the aluminum foil protective layer, the side wall of the heat-insulating layer is provided with the mounting port and the butt joint port, the side wall of the metal plate is fixedly connected with the rotating shaft, the circumferential outer wall of the rotating shaft is rotationally connected with the mounting block, and the side wall of the metal plate is provided with the butt joint hole, so that the problems of inconvenient alignment combination installation and poor fire resistance between metal carved plates are solved.

The utility model discloses a polypropylene frame nanometer thermal insulation board, which comprises a thermal insulation board body, the outer end of the thermal insulation board body is fixedly connected with an MPP reinforced frame, the thermal insulation board body comprises a protective layer, an electromagnetic shielding layer, a thermal insulation layer, a sound absorption damping layer, a fireproof blocking layer and a lining layer, the protective layer is attached to the electromagnetic shielding layer, and the lining layer is attached to the thermal insulation layer. A traditional silica gel frame is replaced by the MPP frame, a multi-layer functional structure is integrated, the comprehensive performance and the application range of the nanometer heat insulation plate are remarkably improved, the fire endurance breaks through 1.5 hours through double protection of the flame-retardant MPP surface layer and the ceramic coating, leap-type improvement is achieved compared with 0.5 hour of the silica gel frame, and the service life of the nanometer heat insulation plate is prolonged. The aerogel core layer is embedded into the MPP reinforcing ribs, so that the heat insulation and bearing capacity structure is optimized, and the physical performance of the heat insulation plate is improved to a great extent.

The present invention provides a 490 MPa grade earthquake-resistant and fire-resistant steel plate and a preparation method thereof. The chemical composition of the fire-resistant steel plate includes: C: 0.02 - 0.18%, Si: 0.1 - 0.5%, Mn: 1.1 - 1.6%, P ≤ 0.015%, S ≤ 0.015%, Mo: 0.15 - 0.5%, Nb: 0.01 - 0.06%, V ≤ 0.13%, 0 < Ti ≤ 0.04%, and the balance is Fe and unavoidable impurities. The preparation method includes smelting molten steel for steelmaking; pre-treating the molten steel for steelmaking, removing impurities and then controlling the composition at the end of the converter, deoxidizing and alloying, and obtaining molten steel after refining; casting the molten steel into continuous casting billets, heating and then holding at a constant temperature, performing rough rolling and finish rolling, and obtaining a 490 MPa grade earthquake-resistant and fire-resistant steel plate after cooling. The fire-resistant steel plate of the present invention has high strength, good plasticity and toughness, excellent earthquake resistance and long-time fire resistance, which can not only meet the requirements of earthquake-resistant and fire-resistant performance, but also reduce production costs.

The utility model discloses a fire resistance test device for fireproof wire and cable production, which comprises an object placing plate and a fixed box, flamethrowers are uniformly and fixedly connected in the fixed box, conductive clamps are uniformly and fixedly connected at one side of the object placing plate, illuminating lamps are connected in series at one sides of the conductive clamps through wires, V-shaped grooves are uniformly arranged on the fixed box, and the V-shaped grooves are communicated with the V-shaped grooves. The fixing box is provided with a slot in the V-shaped groove, one side of the fixing box is in contact with a sealing cover, one side, close to the fixing box, of the sealing cover is evenly and fixedly connected with clamping plates, the clamping plates are provided with V-shaped recesses, the fixing box is fixedly connected with an upper protrusion, and one side, close to the fixing box, of the upper protrusion is in contact with a lower protrusion. The V-shaped grooves and the slots are uniformly formed in the upper side of the fixed box and are matched with the clamping plates and the V-shaped recesses on the sealing cover, so that electric wires and cables with different diameters can be limited, then the electric wires and cables are connected with a power supply, a conductive clamp and an illuminating lamp, and meanwhile, the flame projector provides combustion conditions, can provide fire resistance detection and provides a comparison effect.

The utility model discloses a comprehensive fire resistance test device which comprises a furnace body, a fire spraying pipe group, a temperature detector, a pressure detector, an exhaust port and a water cooler, the inner wall of the furnace body is made of a multi-layer composite refractory material; the fire spraying pipe sets are symmetrically distributed on the left side and the right side of the furnace body, the tail ends of the fire spraying pipes are provided with multi-stage swirl nozzles, and the adjustable range of the angles of the nozzles is + / -15 degrees. A movable partition plate is arranged in the furnace body and divides the furnace body into at least two independent testing areas, and each area is provided with an independent temperature detector, an independent pressure detector and an independent fire spraying pipe set. The water cooler is communicated with the exhaust port through a double-layer spiral cooling pipe, a phase change material is arranged in the double-layer spiral cooling pipe, and an outlet of the water cooler is connected with the flue gas purification module; the device can test different materials or working conditions in different areas, is energy-saving and environment-friendly, and can accurately simulate a complex thermal stress environment.

The invention provides a movable airtightness detection device for a fireproof plugging material, and belongs to the technical field of fireproof plugging material detection, and the movable airtightness detection device comprises a mounting frame assembly, a pressure box assembly and an air collection box assembly, the pressure box assembly and the air collecting box assembly are arranged on the front side face and the rear side face of the installation frame assembly respectively, the pressure box assembly is suitable for conducting air tightness detection on the fireproof blocking material, and the air collecting box assembly is suitable for collecting air. And the pressure box assembly and the air collecting box assembly are moved and separated from the mounting frame assembly, so that the fire resistance test assembly performs fire resistance detection on the fireproof plugging material. The fireproof plugging material does not need to be dismounted for the second time, dismounting for one time is reduced, a fireproof test is directly carried out, equipment investment is reduced, working intensity is reduced, the experimental period is shortened, and the damage risk of the fireproof plugging material is reduced.

The utility model relates to bridge sleeve technical field especially for a kind of rock wool cloth protection structure for HDPE sleeve, including sleeve body, the outer wall of sleeve body is provided with fireproof mechanism;The fireproof mechanism includes the installation strip of sliding connection in the outer wall of sleeve body, the outer wall of the installation strip is covered with fireproof layer, the inside sliding connection of the installation strip has locating block, the outer wall of the locating block and in the fixed connection of sleeve body has adjusting shaft, by setting fireproof mechanism on sleeve body, so that the design that fireproof layer can be fixedly covered in sleeve body outer wall by installation strip and locating block in fireproof mechanism through fixed structure, so that sleeve body can increase its fire resistance by the fireproof layer covered in outer wall in use process, solve the existing HDPE sleeve in use, its fire resistance is poor, cannot satisfy the use requirement problem of user.

The utility model discloses a kind of fireproof glass curtain wall units with self-closing structure, it includes frame, fireproof glass and closing mechanism.Closing mechanism is equipped with slide rail, sliding block, elastic member and trigger device, sliding block is driven by elastic member and is fixed by trigger device, trigger device releases sliding block at high temperature, so that sealing strip is closely attached to fireproof glass edge.It also includes cushion pad, guide rod, limiting plate and auxiliary support frame and the like optimization component.This application can realize automatic closure when fire, form reliable fireproof barrier, avoid fire spread, improve safety;Sealing strip multilayer composite structure and cushion pad design have fire resistance and heat insulation performance simultaneously, protect glass and prolong service life, overall practicality is strong and high reliability.

The invention provides a core-shell structure composite flame-retardant synergist, a preparation method and application thereof, an intumescent fireproof coating, and preparation and application thereof, and belongs to the technical field of fire-fighting materials. Through a coprecipitation method, ammonium polyphosphate APP and melamine MEL which exist independently traditionally are compounded and assembled at a molecular level on the surface of a zinc borate particle serving as an anchor point to form a core-shell integrated functional particle. At the high temperature of a fire, due to close contact and extremely short reaction path of APP and MEL of the shell layer, violent dehydration, gasification and cross-linking reaction can be instantly generated, strong expansion driving force with more controllable directionality is generated, the expansion efficiency is greatly improved, and the coating fire resistance, carbon layer quality and durability of the fireproof coating can be remarkably improved.

The invention discloses an anti-airing handrail for a ship and a passenger ship, and belongs to the field of ship design. The handrail extends along a ship corridor and is fixed to the bulkhead through a handrail base, and a lining plate which abuts against a ceiling and a deck up and down is arranged between the handrail base and the bulkhead. The top surfaces of the handrails fluctuate alternately in a wave shape to form inclined slope sections, and the cross section of each handrail is in a flat shape with the width of 70-100 mm, so that clothes hangers can be prevented from being hung, and clothes can be prevented from being aired. LED lamp strips are arranged in grooves in the bottom surfaces of the handrails and are connected with an emergency power supply for decoration and emergency illumination. The armrest seat is of an L-shaped stainless steel structure, the fixing ring is embedded into the annular groove of the armrest, and installation is firm and safe. The lining plate is a stainless steel rock wool board and is fireproof and heat-insulating. According to the scheme, the ship strength and fire-resistant specifications are met, the airing hidden danger is eliminated, an evacuation channel is guaranteed to be unblocked, and safety and practicability are improved.

This utility model relates to the field of intelligent document safes, specifically an intelligent document safe comprising a main body, a security mechanism, an auxiliary mechanism, and a power supply mechanism. The security mechanism is located outside the main body, the auxiliary mechanism is located inside, and the power supply mechanism is located inside the main body. This utility model provides multiple protection measures for the safe through the arrangement of the 3D structured light facial recognition module, the display screen, and the vein recognition module in the security module, as well as the anti-drill mechanical lock cylinder. Furthermore, the cabinet structure is made of three layers of composite board composed of different materials, which reduces weight while significantly improving fire resistance and anti-theft performance. At the same time, the power supply mechanism supplies power to the security mechanism. The power supply mechanism is equipped with a rechargeable lithium battery that can last for up to two years and is also equipped with a hand-cranked generator for backup power in emergencies. In addition, a dehumidifying box is added to prevent prolonged moisture interference to electronic components, thereby extending the service life of the electronic components.

The present invention provides a concrete-based energy storage box, provided with a tray-shaped housing and a cover plate. The cover plate covers the tray-shaped housing to form a sealed energy storage cavity, and the tray-shaped housing and the cover plate both are made of a concrete composite material. The energy storage box is formed into an independent and enclosed space by means of the tray-shaped housing and the cover plate that are made of the concrete composite material, such that a high temperature caused by battery thermal runaway within a single energy storage box can be effectively confined within the energy storage box. In addition, since the energy storage box made of the concrete composite material has high compressive strength and a long fire resistance duration, fire extinguishing agent supply branch pipes can be flexibly configured inside the energy storage box, such that in the event of a battery fire caused by severe thermal runaway, sufficient time can be provided for the fire extinguishing agent supply branch pipes arranged in the energy storage box to deliver a liquid extinguishing agent, thereby promptly and effectively extinguishing the flames inside the energy storage box, and preventing the flames from spreading and affecting other energy storage boxes in an energy storage device.

The invention provides an environment-friendly high-temperature-resistant low-smoke halogen-free flame-retardant cable, relates to the technical field of cables, and solves the technical problems of material embrittlement, insufficient oxygen isolation, high temperature resistance and flexibility imbalance caused by high filling of a flame retardant in the prior art. The cable sequentially comprises a copper alloy conductor, a nano compound insulating layer, a ceramic oxygen barrier layer and a bio-based LSZH sheath layer from inside to outside, a material compound system realizes the balance of flame retardance and mechanical properties through nano inorganic flame retardance, organic synergistic flame retardance and base material modification, and the environmental protection property is improved by doping bio-based PLA; and through three-layer co-extrusion and sectional gradient irradiation crosslinking, the production efficiency and the product consistency are improved. The long-term working temperature of the cable is 150-180 DEG C, the flame retardant rating reaches class A, the smoke density is smaller than or equal to 100 Dm, the tensile strength is larger than or equal to 12 MPa, the fire-resistant time is larger than or equal to 180 min, and the material cost is reduced by 10-15%.

This invention discloses a fireproof window, including a fireproof window frame, a fireproof window sash within the frame, and fireproof glass within the sash. The fireproof glass has a hollow structure, and an installation cavity is provided within the sash. A bladder is housed within the installation cavity, communicating with the cavity of the fireproof glass. A driving component is also provided within the installation cavity, which can pump fire-retardant liquid from the bladder into the cavity of the fireproof glass. In the event of a fire, the driving component can compress the bladder, causing it to spray the fire-retardant liquid into the cavity of the fireproof glass, thereby achieving better fire resistance. Compared with existing technologies, this invention's fireproof window can actively compress the internal bladder during a fire, causing the fire-retardant liquid within the bladder to be sprayed into the fireproof glass, thus improving the overall fire resistance of the window.

The utility model provides a device for testing the fire resistance of a heat insulation system structure, the heat insulation system structure covers the surface of a profile, the device comprises a furnace body, a furnace cover, an air outlet, a heater and a probe, the furnace body forms a furnace chamber, a furnace mouth located at the top of the furnace chamber and a furnace bottom located at the bottom of the furnace chamber, and the furnace cover is arranged at the furnace mouth and covers the furnace mouth. The section bar is vertically arranged at the furnace bottom, the probe is arranged on the surface of the section bar, and the heater penetrates through the furnace body to supply heat into the furnace cavity. According to the utility model, the furnace mouth and the furnace cover are arranged at the top of the furnace chamber, so that the section bar can be hoisted from the furnace mouth, the furnace cover is used for sealing the furnace mouth, the heater is used for forming a high-temperature environment in the furnace chamber, the probe is used for collecting the surface temperature of the section bar in real time, the air outlet is used for discharging flue gas in the furnace chamber, and the whole detection process is convenient to operate and accurate in test data.

The utility model discloses a fire-resistant air duct fire-resistant performance detection device which comprises a detection box, a flame nozzle is connected to the side surface of the detection box in a penetrating mode, the output end of the flame nozzle is located in the detection box, the rear surface of the flame nozzle is communicated with a connecting pipe, the inner surface of the detection box is rotationally connected with a rotary disc, and four second sliding grooves are formed in the rotary disc. The inner surfaces of the four second sliding grooves are slidably connected with sliding blocks, the lower surfaces of the sliding blocks are fixedly connected with guiding blocks, the lower surface of the rotating disc is rotatably connected with a rotating shaft, the outer wall of the rotating shaft is fixedly connected with a guiding frame, and a guiding groove is formed in the guiding frame. No matter a small-caliber pipeline or a large-caliber air pipe and the like can be stably fixed, and different clamps do not need to be designed and replaced for air pipes with different diameters, so that the application range of the detection device is widened, and the detection cost is reduced.