31 results about "Firestop" patented technology

The invention provides methods, systems and devices for installing thermal barriers in openings or gaps in or between structures such as walls, ceilings and floors. At least one firestop block is positioned in the holes or gaps formed by the wall and a fluted metal deck of the ceiling or floor. The walls can be gypsum walls, which may have a metal track at the top or bottom, or could be block walls made of concrete or similar material. The firestop blocks are made of fire resistant material such as hydratable cement or intumescent materials. A flexible or flowable firestop material that is operative to cure or harden, such as elastomeric sealant or silicone, or hydratable cementitious slurry, is introduced into the space between the firestop block and the hole or gap, as a sealant or filler.

A fire transmission prevention system (10) for use in a drainage system (100) to prevent the transmission of smoke and fire through the drainage system. The system is intended to be used in drainage systems in multi-story structures. The system includes a firestop (16), couplings (14, 26 and 30) and an air vent (42). The firestop prevents fire and smoke from moving through the inner passageways (44D) of the pipes (12, 24, 28 and 72) of a drainage system by blocking the inner passageway of the pipes with a fire resistant plug (20). The couplings are mounted in the floor (102) of the structure and are constructed and secured in the floor such as to prevent fire and smoke from passing around the couplings between the couplings and the floor. The air vent is provided in a vent pipe (40) of the system above a trap (38 or 78) of the system. The vent acts to prevent ambient air and thus, oxygen from entering the inner passageway of the pipes of a system when positive pressure, such as that caused by high temperature and fire, is present in the inner passageway of the pipes.

The invention relates to a firestop material consisting of a polymer foam, notably a polyurethane foam, containing flame-retardant means. This firestop material is characterized in that the flame-retardant means consist of means designed to form a charred layer on the foam surface, under the effect of a rise in the temperature of the material resulting from a fire, and are supplemented by at least one inorganic type flame retardant. The invention furthermore relates to a chemical composition intended, after expansion and drying, to form such a firestop material, and to a use of such a firestop material.

The present invention concerns a cooling cover (10) comprising cooling tubular armatures (34) applied against said cooling cover or against an existing cover. The cooling cover is characterized by a sandwich-type assembly of dry-process manufactured upper and lower firestop plates (16, 26) of gypsum plasterboard or plaster mold, separated by spacers (22) so as to form plane cavities (24) where the cooling tubular armatures (16) are situated, the upper plates (16) preferably being provided with a firestop spacer or a heat reflecting layer, for instance an aluminum foil. In an other embodiment, the tubes of the cooling armature are embedded in a sealing material, resulting in a plate being placed either against the lower surface of the dry-process manufactured upper plates or against segments of this surface.

A multilayer intumescent mat or sheet (30) is useful for mounting a pollution control device (20) or as a firestop. In one aspect, the multilayer intumescent sheet of the invention comprises a non-moldable flexible non-intumescent layer and a non-moldable flexible intumescent layer comprising an intumescent material wherein the layers form a single sheet without the use of auxiliary bonding means. The mat desirably includes a significant proportion of inorganic fiber containing shot, and small proportions of shot-free inorganic fiber and intumescent material. In another aspect, the multilayer intumescent sheet of the invention comprises a first non-moldable intumescent layer comprising a first intumescent material and a second non-moldable intumescent layer comprising a second intumescent material, the first and second intumescent materials being different, wherein the layers form a single sheet without the use of auxiliary bonding means. The invention also provides a pollution control device comprising a multilayer sheet of the invention disposed between a monolith and a housing.

The invention discloses a medium-voltage fire-resistant power cable, which comprises a cable core, wherein the cable core is formed by twisting a plurality of wire cores; each wire core comprises a conductor, a shielding layer, an insulating layer and an insulating shielding layer; the shielding layers, insulating layers and the insulating shielding layer are arranged outside the corresponding conductors; each conductor is formed by twisting a plurality of copper core conductors; a thermal insulating layer is also arranged outside each insulating layer; one insulating shielding layer is arranged outside each thermal insulating layer; a metal shielding layer wraps the outside of each insulating shielding layer; a fire-resistant layer is arranged outside each metal shielding layer; the partsamong the plurality of wire cores are filled with fillers; a ceramic fiber tape, an adiabatic cooling layer, a steel tape firestop layer, an oxygen barrier layer, an inner sheath and an outer sheathwrap the outside of the cable core; and the outer sheath wraps the inner sheath through a lubricating layer. The medium-voltage fire-resistant power cable is simple in structure, and has good flame retardant property and fire resistance; the voltage level of the cable is improved on the basis of ensuring the flexibility and the large-length processing performance of the cable; and safe and reliable operation of a power system is ensured.

A multilayer intumescent mat or sheet (30) is useful for mounting a pollution control device (20) or as a firestop. In one aspect, the multilayer intumescent sheet (30) of the invention comprises a non-moldable flexible non-intumescent layer and a non-moldable flexible intumescent layer comprising an intumescent material wherein the layers form a single sheet without the use of auxiliary bonding means. The mat desirably includes a significant proportion of inorganic fiber containing shot, and small proportions of shot-free inorganic fiber and intumescent material. In another aspect, the multilayer intumescent sheet of the invention comprises a first non-moldable intumescent layer comprising a first intumescent material and a second non-moldable intumescent layer comprising a second intumescent material, the first and second intumescent materials being different, wherein the layers form a single sheet without the use of auxiliary bonding means. The invention also provides a pollution control device comprising a multilayer sheet of the invention disposed between a monolith and a housing.

The invention discloses automatic firestop collar core material production equipment. The automatic firestop collar core material production equipment comprises a conveying device, wherein a core material molding machine and a packaging table are arranged above the conveying device; and a dryer, a cooler and a cooling curer are arranged between the core material molding machine and the packaging table in sequence. A method for producing firestop collar core materials by using the equipment comprises a stirring and mixing procedure, a core material die-casting molding procedure, a core material blank drying procedure, a core material blank cooling procedure and a core material blank low-temperature curing procedure. The production equipment and method are skilful in design, and improve the production efficiency and the product quality of the firestop collar core materials.

The invention relates to a high-pressure unloading type gunpowder gas-actuated valve, and aims to solve the problems that an electric explosion valve in the prior art can only be used in a certain pressure range, chips cannot be timely disposed, the production cost is high, and wedging and positioning are not firm. The gas-actuated valve comprises an electric explosion tube, a base body, blind tubes and a cutter assembly. The electric explosion tube is installed at the left end of the base body, the two blind pipes are symmetrically installed at the right end of the base body in the circumferential direction, and the cutter assembly is mounted in the base body. The cutter assembly comprises a large-diameter driving section, a small-diameter cutting section and a small-diameter unloading section which are sequentially connected from left to right. A gas firestop sealing ring is arranged between the outer wall of the large-diameter driving section and the inner wall of the base body. A flow passing hole is formed in the left portion of the small-diameter cutting section. Two symmetrical grooves are formed in the right portion of the small-diameter cutting section. An unloading sealing ring is arranged between the small-diameter unloading section and the base body. The closed ends of the blind pipes penetrate through the base body and are matched with the grooves. A cavity capableof containing the small-diameter cutting section and a cavity for wedging the cutter assembly and the base body are sequentially formed in the portion, on the right side of the cutter assembly, in the base body.

A method includes coupling a platform to a sheet metal having alternating peaks and Valleys. The platform includes a block-out component configured to conform to a valley of the sheet metal. The method further includes coupling a lead-sleeve to a mounting region of the platform. The method further includes pouring concrete around the platform and lead-sleeve, where the block-out component blocks a flow of the concrete from below the platform. The method also includes inserting a cutting tool through the lead-sleeve to remove one or more portions of the sheet metal to form a through-penetration.

The invention discloses a waste gas treatment and transport device for environment protection equipment, which comprises a bottom plate, a spray tower and a plasma photodegradation deodorizing purifier. A waste gas pipe is arranged on one side of the upper side of the bottom plate, and a first anti-static layer is arranged on the inner wall of the waste gas pipe. An electric precipitator is arranged on the side of the upper side of the bottom plate far away from the waste gas pipe. A blower is arranged in the front of the electric precipitator. A fourth connection pipe is arranged on the sideof the blower close to the waste gas pipe. An air pipe is arranged in the front of the fourth connection pipe. The waste gas treatment and transport device has the advantages that the anti-static function is added via the arrangement of the first anti-static layer, a second anti-static layer, a third anti-static layer, a fourth anti-static layer and a fifth anti-static layer, the firestop and explosion proof function is added owing to the arrangement of a deflagration fire arrestor, the function of waste gas release is added owing to the arrangement of the blower, the air pipe and the fourth connection pipe, and a rain shielding cover prevents rain from entering an exhaust pipe, causing damage to the blower.

A firestopping apparatus including a housing defined by first and second housing members. Each housing member includes a width direction wall panel and a height direction wall panel. The width direction wall panel of the first housing member is configured to connect with the height direction wall panel of the second housing member and the width direction wall panel of the second housing member is configured to connect with the height direction wall panel of the first housing member to define an assembled housing with a through passage. Intumescent material is positioned along an inner surface of each wall panel. A compressible foam is positioned within the intumescent material and substantially closes off the through passage.

The invention discloses a novel municipal engineering safety protection device, which is mainly composed of a roadblock main body and a fire retardant assembly. The roadblock main body mainly includes a conical cylinder body and a base. The inside of the conical cylinder body is hollow and the lower end is open. The invention has a roadblock At the same time, during the laying of municipal gas pipelines, the PFB intumescent fire retardant package can be used to temporarily block the end of the pipeline on fire. At this time, the PFB intumescent fire retardant package can seal the pipeline more tightly , which can effectively prevent the sudden fire of the gas pipeline, and can reduce the spread of the fire point to a certain extent. With the function of roadblocks, it can play a good maintenance warning function and can temporarily control the fire when a fire occurs. control, and the PFB inflatable fire retardant package also plays a counterweight effect on the barricade function, and the two have a complementary role.