44results about How to "Good fire protection" patented technology

The invention discloses a phosphorus-containing and nitrogen-containing expansion type flame-retardant polymer and a preparation method thereof. The preparation method is characterized in that: the phosphorus-containing and nitrogen-containing expansion type flame-retardant polymer is prepared by solution polycondensation reaction or melt polycondensation reaction of diphosphorus acylchloride or diphosphorus acylbromide and a diamine functional group-containing compound. The expansion type flame-retardant polymer comprises phosphorus-containing and nitrogen-containing phosphamide with a structure unit formula shown in the specifications, wherein n is an integer of from 1 to 200; R1 is oxygen or sulphur; and R is alkoxy, alkylthio, aryloxy or arylthio. The product of the invention has high compatibility with a high molecular material matrix, difficult transfer and excellent durability. The preparation method has the advantages of simpleness, easy control, high yield, wide sources of the required raw materials and easy industrialized production. A high polymer with a flame-retardant function can be directly prepared, or the high polymer serving as a flame-retardant additive can be added into various polyesters, polyamide, polyolefin, epoxy resin, polystyrene, high impact polystyrene or acrylonitrile butadiene styrene (ABS) polymer.

The invention discloses an intelligent remote security monitoring system for an offshore wind generating set. The system comprises a plurality of groups of cameras, a plurality of access layer switches and a main control room, wherein a plurality of access layer switches and a plurality of groups of cameras are arranged on a plurality of fans; the cameras are connected with the access layer switches; the access layer switches are connected with the Ethernet of a wind power farm through local area networks in the fans and connected to the main control room through a local area network in the main control room; and the main control room comprises a core switch and a memory, a server and a display which are connected with the core switch. By the system, five cameras are arranged on a single fan, and the real-time video monitoring and control of the whole offshore wind power project is realized in the main control room, so that the security protection and monitoring levels of the offshore wind generating set are improved.

The invention discloses a steel pipe-reinforced concrete laminated framework structural system, which belongs to the field of structural engineering in civil engineering. The steel pipe-reinforced concrete laminated framework structural system is characterized in that laminated sections formed by wrapping reinforced concrete outside hollow steep pipes are adopted for beams and columns of the system. The hollow steel pipes are adopted inside, and the sections are unfolded, so that high rigidity is realized, the dead weight of the structure is reduced effectively while the using amount of concrete is reduced, and the acting force in earthquakes is reduced; and meanwhile, good fire-proof and corrosion-resistant protection is provided for the steel pipes by using the wrapped reinforced concrete. In node regions of the system, steel pipes in columns are connected with each other, and steel pipes in beams are welded on the steel pipes in columns through reinforced ring plates. Column longitudinal bars are arranged in a through way; a part of beam longitudinal bars go deep into nodes after bypassing the steel pipes in columns, and a part of beam longitudinal bars are welded on the steel pipes in columns; and beam and column stirrups are thickened appropriately in the node regions. The steel pipe-reinforced concrete laminated framework structural system is applied to the structural forms of frameworks, framework-shear force walls and the like, and is suitable to be taken as a main body structural system of large-sized high-rise, super-high-rise or huge structures.

The invention discloses nano expanding type transparent fireproof paint and a preparation method thereof.The paint comprises a component A and a component B.The component A contains nano filler grafted phosphate ester acid, and the component B contains melamine resin.The paint has the advantages that nano silicon dioxide and organic montmorillonite are chemically grafted to phosphate ester acid, so that nano filler is evenly dispersed in a coating, and the coating transparency, mobility and compatibility problems caused by physical mixing are effectively avoided.The nano filler, phosphate ester acid and amino resin are introduced into the transparent fireproof paint so as to form a compact expanding carbon layer structure which has a good fireproof protective effect on a base material.Nano silicon dioxide, organic montmorillonite and an expanding flame-retardant agent have a synergistic effect and can obviously improve the fireproof protective effect of an expanding carbon layer.The nano expanding type transparent fireproof paint is wide in raw material resource, low in cost and convenient to operate.

The invention discloses a fire-proof protecting device of a shock-insulation rubber supporting seat. The fire-proof protecting device comprises upper heat-insulation profiles, lower heat-insulation profiles, aluminum silicate fiber blankets connecting pieces and fire-proof blocking materials. The fire-proof blocking materials are adhered between the contact faces of the upper heat-insulation profiles and upper layer columns. The lower heat-insulation profiles are arranged on the top faces of lower layer columns in a masonry mode through fire-proof adhesives. The fire-proof blocking materials are adhered between the upper heat-insulation profiles and the lower heat-insulation profiles. The spaces between the upper heat-insulation profiles and the shock-insulation rubber supporting seat as well as between the lower heat-insulation profiles and the shock-insulation rubber supporting seat are filled with the aluminum silicate fiber blankets. Through a fire-proof protecting construction method, good fire-proof protecting for the shock-insulation rubber supporting seat can be achieved, it can be ensured that fire-proof protecting is not destroyed during shock-insulation supporting seat deformation, and meanwhile the method has the advantages of being convenient to operate and wide in application range.

The invention relates to the technical field of electrical equipment, and discloses a practical electrical equipment fireproof device which comprises a shell. A transmission shaft is arranged in the shell, a rotating disc is arranged on the surface of the transmission shaft, a push rod is arranged on the lower surface of the rotating disc, and a rotating rod is movably connected to the end, away from the rotating disc, of the push rod; and an auxiliary spray head is arranged at the lower end of the rotating rod, a rotating cylinder is movably connected to the end, away from the shell, of the transmission shaft, a ratchet wheel is arranged in the rotating cylinder, a first gear is arranged on the surface of the end, close to the rotating cylinder, of the transmission shaft, and a transmission gear is arranged in the rotating cylinder. According to the practical electrical equipment fireproof device, through cooperative use of the transmission shaft and the rotating disc, cooperative use of the rotating disc and the push rod and cooperative use of the rotating rod and the auxiliary spray head, the auxiliary spray head can achieve a reciprocating rotation effect, the spraying area of the auxiliary spray head can be effectively increased, the fireproof effect of electrical equipment is good, and fireproof protection of the electrical equipment is facilitated.

The invention discloses a novel composite flame-retardant cable. The cable has a two-layer flame-retardant protection function because a ceramic silicon rubber composite tape is wound outside a conductor, and a mica tape is wound outside the ceramic silicon rubber composite tape; two high-flame-retardant materials are used for protection when the cable encounters fire and is burnt, and a closed ceramic pipe is formed when the outer flame-retardant silicon rubber tape encounters the fire and is burnt, so that flames and spraying water can be insulated, the inner mica tape is protected from damage, and the inner mica tape still can play a good flame-retardant protection effect even if the silicon rubber ceramic pipe is broken. According to the ceramic silicon rubber composite tape winding structure, the cable diameter can not be greatly increased, the cable is flexible when being used normally, and materials can be saved; specific extrusion equipment is not required to be arranged during processing; and the ceramic silicon rubber composite tape is wound inside an outer sheath, and the surface performance of the cable is not influenced at all. The cable still can normally work when the cable is burnt for over 120min at a temperature of 950+50 DEG C, and the water is immediately sprayed lasts for 3 minutes.

The invention relates to the technical field of fireproof file cabinets and discloses a fireproof file cabinet with an alarm function. The cabinet comprises a cabinet body, an opening is formed in thefront side of the cabinet body, and opening and closing doors are connected to the opening through hinges. Buffer boxes are fixedly connected to the three vertical side walls of the cabinet body andthe surfaces of the opening and closing doors. And a buffer plate is slidably connected into each buffer box, the sides, close to the cabinet body, of the buffer plates are connected with the inner walls of the buffer boxes through a plurality of buffer mechanisms, a plurality of supporting blocks are evenly and fixedly connected to the sides, away from the cabinet body, of the buffer plates, andone ends of the multiple supporting blocks penetrate through the buffer box and are fixedly connected with the same anti-collision plate. The fireproof file cabinet with the alarm function has the advantage of being good in fireproof effect.

The invention provides a cement foam insulation and decoration integrated board, which includes a cement foam board, the cement foam board is provided with a base layer for surface modification, and the base layer is provided with an inorganic material for decoration and fire prevention. Finishing layer, the inorganic finishing layer is also provided with an overcoat layer for protection, wherein the thickness ratio of the base layer, the inorganic finishing layer and the overcoat layer is 1:(1.5~3):(0.3~0.5) ; The present invention combines the inorganic facing layer and the cement foam board through inorganic bonding, which has better fire prevention, heat preservation and sound insulation effects, and is more beautiful. The present invention is convenient in construction and high in work efficiency. The construction cost is low. In addition, the invention is made of inorganic materials as a whole, and does not need to use plants or organic chemical raw materials. Compared with organic materials, it has low-carbon and environmental protection effects. There is no dust during installation, no peculiar smell after installation, and no harmful chemical emissions. Products, with the advantages of green environmental protection.

The invention discloses a power grid adaptability testing device which comprises a test device shell, a wiring terminal, a fireproof felt, a rubber column, an insulation base and a movable pulley, wherein the top end of the test device shell is in threaded connection with a lifting ring, and the inner side of the test device shell is connected with an installation plate through an insulation block, the lower end of the wiring terminal is in threaded connection with the installation hole, the installation hole is formed in the installation groove, and the fireproof felt is located between the test device shell and the installation plate, the rubber column is located between the lower portion of the outer side of the shell of the test device and the inner side surface of the damping device,and a damping spring is arranged between the lower end surface of the test device shell and the inner bottom surface of the damping device, the insulation base is arranged below the interior of the test device shell, and the movable pulley is located at the lower end of the damping device. The power grid adaptability testing device is characterized in that the fireproof felt is arranged between the installation plate and the side wall of the test device shell, so that the fireproof protection of the equipment inside the test device shell can be achieved.

The invention belongs to the technical field of communication, and particularly relates to a liftable communication base tower protection system. The liftable communication base tower protection system comprises a base and a communication protection system, wherein the upper surface of the base is fixedly connected with two groups of symmetrical supporting cylinders; the inner bottom wall of eachsupporting cylinder is fixedly connected with a hydraulic rod; the upper surface of the base is fixedly connected with a hydraulic cylinder; the input end of each hydraulic rod is fixedly communicatedwith the input end of the hydraulic cylinder through a hydraulic pipe; the output end of each hydraulic rod is fixedly connected with a sliding plate; and the upper surface of each sliding plate is fixedly connected with a supporting column. According to the liftable communication base tower protection system, the temperature and the humidity inside a base station can be sensed through a temperature sensor and a humidity sensor, so that a central processing unit judges whether a cooling fan is started for cooling or a circuit breaker is disconnected for protecting the base station, and the safety of a communication base tower is improved; and a wireless transmission module is connected with a system terminal, so that an alarm module can be matched with the system terminal to monitor the protection system.

The invention discloses a concrete block with a sound insulation function. The concrete block comprises a concrete block main body, connecting convex blocks, rectangular open holes, a locating column,a concrete layer, a fireproof layer, a thermal insulation layer, a thermal insulation board and a sound insulation layer; locating holes are formed in the concrete block main body, and a fixed grooveis formed in the middle position on the concrete block main body; the connecting convex blocks are located at the rear side of the concrete block main body, and the front side of the concrete block main body is provided with connecting grooves; the rectangular open holes are located inside the concrete block main body, and the lower end surface of the concrete block main body is provided with a fixed block; the thermal insulation layer is located at the inner side of the fireproof layer; the thermal insulation board is located inside the thermal insulation layer; the sound insulation layer islocated on a middle position inside the concrete block main body; and the inside of the sound insulation layer is filled with sound insulation asbestos. According to the concrete block with the soundinsulation function, the sound insulation layer is arranged on the middle position of the concrete block main body, so that the sound insulation effect of a building can be favorably improved.

The invention provides a fireproof plugging module and a preparation method thereof. The fireproof plugging module comprises 30 to 45 parts of compound polyether polyol, 5 to 15 parts of a flame retardant, 5 to 15 parts of low-temperature expanded graphite, 3 to 5 parts of a moisture-proof agent, 0.2 to 0.4 part of a catalyst, 15 to 25 parts of a curing agent, 0.1 to 0.3 part of a plasticizer and0.2 to 0.5 part of deionized water. The fireproof blocking module is good in weather resistance, capable of expanding at low temperature, easier to cut and free of slag falling during cutting.

The invention discloses a building brick and a manufacturing method thereof and belongs to the technical field of building materials. The building brick is prepared from the following components in parts by weight: 40-60 parts of expanded perlite, 25-35 parts of ceramic clay, 12-18 parts of quartz sand, 5-15 parts of cement, 5-15 parts of talcum powder, 4-8 parts of quick lime and 10-20 parts of water. The manufacturing method of the building brick comprises the following steps: (1) mixing and stirring the expanded perlite, the quartz sand, the cement, the talcum powder, the quick lime and thewater in parts by weight so as to obtain a slurry mixture A; (2) mixing and stirring the ceramic clay, the cement, the talcum powder, the quick lime and the water in parts by weight so as to obtain amixture B; (3) pouring the mixture A in a gap between an outer-layer baffle plate and a middle-layer baffle plate, pouring the mixture B in a gap between the middle-layer baffle plate and an inner-layer baffle plate, pulling out the middle-layer baffle plate, and further sufficiently pressing by using a pressing plate; 4) drying a building brick, molded by using a mold, on the clean ground in theair. The building brick made by using the manufacturing method is good in heat-preservation and thermal-insulation effect and good in fireproof function.

The invention relates to the technical field of cables and particularly to a high-strength fireproof cable comprising a first sheath in which a plurality of conductors are disposed. The outside of each conductor is successively provided with an insulating sleeve, a metal sleeve and an isolating sleeve. Four arc support plates are disposed in the first sheath at intervals. A plurality of conductors are uniformly distributed in the four arc support plates. Gaps between the conductors and the arc support plates are filled with an oxygen isolation material. Gaps outside the four arc support plates are filled with a mineral substance fire isolation material. The first sheath is further provided with a support strip therein located among the four arc support plates. The outside of the first sheath is sleeved by a second sheath. The high-strength fireproof cable is simple in structure and convenient to use, and has not only high strength, but also a good fireproof effect.

The invention discloses a one-truss steel bar floor support plate with a disassembly-free bottom form. The one-truss steel bar floor support plate is characterized by being formed by combining the disassembly-free bottom form, capital-omega-shaped material connecting pieces, self-tapping screws, lower chord longitudinal steel bars in a one-truss steel bar structure, upper chord longitudinal steel bars and web member wave-shaped steel bars with bent feet. According to the one-truss steel bar floor support plate with the disassembly-free bottom form, the longitudinally-arranged steel bars are single steel bar trusses, compared with triangular steel bar trusses in a steel bar truss floor support plate with a metal bottom form, due to the fact that the number of the lower chord longitudinal steel bars and the number of the web member steel bars used in each truss are both one smaller than the number of the steel bars used in the steel bar truss floor support plate with the metal bottom form, the steel content is greatly reduced, the steel content is closest to that of a traditional cast-in-place slab system, and the bottom of the disassembly-free bottom form can be directly subjected to puttying decoration; and according to the one-truss steel bar floor support plate with the disassembly-free bottom form, the cost is saved for a construction side, the fast turnover target is achieved, the workload of deepening design is saved for a design side, the construction progress is accelerated for the construction side, the construction quality is better controlled, and the productivity is completely released for a component producer, so that all project participants obtain respective benefits.

The invention belongs to the technical field of building engineering, and particularly relates to a track climbing type integral building construction scaffold convenient to disassemble. The scaffoldcomprises a wall body, wherein the wall body is fixedly connected with a support; the wall body is detachably connected with a plurality of sets of climbing pipes; the support and the climbing pipes are connected in a matched mode to be fixed to the wall body; the adjacent climbing pipes are connected in a clamped mode; the climbing pipes are provided with fire-fighting devices in a communicatingmode; and the ends, away from the wall body, of the climbing pipes are connected with lifting assemblies in a meshed mode. According to the scaffold, the track climbing type integral building construction scaffold convenient to disassemble is arranged, the lifting mode of a transmission electric hoist device on a frame body and personnel is replaced, so that the efficiency of lifting and mountingthe frame body by the workers in the building construction process is effectively improved, the moving speed of the workers at all parts is increased, meanwhile, the device can ensure that the frame body and the workers cannot shake in the lifting process to a certain extent, and the safety of building construction is improved.

The invention discloses a steel structure water injection fireproof protection method which comprises the steps that when a fire occurs, the outer surface of a steel structure body is directly exposedto flames to heat the steel structure body; the outer surface of the steel structure body is heated by fire to conduct heat to the inner surface of the steel structure body; a cavity in the inner surface of the steel structure body transfers heat to cooling water in a water injection pipe through heat convection, and parameters in the cooling water in the water injection pipe are tested; test data of the cooling water flowing in the water injection pipe is analyzed and processed through a least square method to obtain a heat exchange criterion relational expression in the water injection pipeand a Fanning friction coefficient criterion relational expression; through establishment of the relational expression, the minimum driving force and the minimum water flow of the steel structure body needing to be protected by cooling water in the water injection pipe when a fire occurs are judged. By means of the scheme, the purpose of fireproof protection of the steel structure is achieved, and high practical value and popularization value are achieved.

The invention relates to a solvent-free epoxy intumescent fireproof coating and a preparation method thereof, and belongs to the field of coatings. The component A of the solvent-free epoxy intumescent fireproof coating is prepared from the following components in parts by mass: 10 to 30 parts of epoxy resin, 5 to 15 parts of diluent, 0.3 to 0.8 part of defoaming agent, 0.1 to 3 parts of adhesion promoter, 5 to 20 parts of chlorinated paraffin coated pentaerythritol, 20 to 40 parts of acid donor, 6 to 15 parts of inorganic nano filler, 1 to 6 parts of reinforced fiber and 0.1 to 1 part of rheological agent; the component B is an epoxy curing agent, and the component A and the component B are uniformly mixed for use. The chlorinated paraffin coated pentaerythritol prepared by the preparation method disclosed by the invention improves the hydrolysis resistance and thermal stability of pentaerythritol, is excellent in humidity and heat resistance when being applied to a solvent-free epoxy intumescent fireproof coating, and can be widely applied to fireproof protection of indoor and outdoor steel structures; and meanwhile, the cable has excellent fire-resistant reliability, corrosion resistance and excellent mechanical properties.

The invention provides a fireproof heat insulation plate and a preparation method thereof. The fireproof heat insulation plate comprises 30 to 50 parts of polyether polyol, 4 to 10 parts of a flame retardant, 0.1 to 1 part of a catalyst, 1 to 5 parts of a chain extender, 5 to 15 parts of expandable graphite, 0.1 to 2 parts of a pigment, 0.1 to 3 parts of aerogel, 45 to 60 parts of a base material and 10 to 25 parts of a surface material. The fireproof heat insulation plate has the advantages of being stable in structure, good in protectiveness and capable of improving the heat insulation performance of the ultra-thin plate.

The invention discloses a production method of a high-fire-retardant and fire-resistant cable for the CRH train, and belongs to the technical field of the cable. The method comprises the following steps: (1) insulation layer extrusion: selecting a single screw extruder in 80mm or 1200 to extrude according to the cable diameter, wherein the extrusion temperature is controlled at 160-180 DEG C; (2) cable-forming: selecting a cable former according to the core number, selecting a pair twister if the core number is less than 8, and selecting a cage twister if the core number is more than 8; (3) fireproof material filling: filling the fireproof material between the cores in the core cable-forming process; (4) wrapping a fireproof layer: wrapping the fireproof layer by using the longitudinal wrapping machine after the cable forming, wherein the lapping coverage rate of the fireproof layer is not less than 30%; and (5) sheath layer extrusion: selecting the single screen extruder in 800 or 120mm to extrude, wherein the extrusion temperature is controlled at 160-170 DEG C. The cable obtained in the invention can guarantee and maintain the unchanged transmission characteristic when being exposed to 800 DEG and in a mechanical shock environment; and the use performance is good.

The invention discloses a modular steel bar truss floor support plate. The modular steel bar truss floor support plate is characterized by comprising a prefabricated bottom plate, self-tapping screws or rivets, a galvanized steel sheet, lower chord longitudinal steel bars, upper chord longitudinal steel bars, web member wave-shaped steel bars and upper chord transverse short bars. Steel bars matched with the modular steel bar truss floor support plate are in-line single-truss steel bar trusses, the steel content is less, the bottom is flat, and putty can be directly scraped for decoration. According to the modular steel bar truss floor support plate, the cost is saved for a construction party, the purpose of fast turnover is achieved, the workload of deepening design is saved for a design party, the construction progress is accelerated for the construction party, the construction quality is better controlled, the capacity is completely released for a component production party, and therefore all parties involved in a project can obtain respective benefits.

The present invention provides one kind of fireproof paper containing expansion graphite and its making process. The fireproof paper contains expansion graphite in 20-80 wt% except paper fiber. The fireproof paper making process includes the steps of: preparing material, preparing paper pulp, mixing, making paper sheet and processing. The fireproof paper has excellent fireproof performance, wide application range, simple making process and ideal use effect.

The invention discloses an ultraviolet light-cured phosphorus-nitrogen-containing halogen-free flame retardant and a preparation method thereof. The preparation method is characterized in that: phenyl dichlorophosphate serving as a reaction matrix is reacted with polyalcohol or polyphenol partially acidified by acrylicacid or methacrylic acid; the product of the reaction is reacted with a nitrogen-containing compound with two reactive amino groups to form a yellow, sticky, transparent, liquid and phosphorus-nitrogen-containing substance which is ultraviolet light-cured monomer of which the molecule has an active double bound and phosphorus-nitrogen flame retardant elements; and the ultraviolet light-cured monomer serving as a reactive flame retardant is added into an ultraviolet light-cured resin substrate to form a transparent coating with high flame retarding efficiency through quick curing in ultraviolet light. The ultraviolet light-cured flame-retardant coating generates 34.0 percent of residue under an air condition at 60 DEG C, and 26.3 percent under a nitrogen condition. The maximum release rate of the ultraviolet light-cured flame-retardant coating is 146.6 W / g. The ultraviolet light-cured halogen-free phosphorus-nitrogen-containing flame retardant can be used for inflaming retarding in wood, textile, plastics, metal or circuit boards.

The invention belongs to the technical field of construction engineering, and in particular relates to a rail-climbing overall building construction scaffolding that is easy to disassemble, including a wall, the wall is fixedly connected with a bracket, and the wall is detachably connected with multiple sets of climbing pipes. The bracket and the climbing pipe are connected and fixed to the wall, and the adjacent climbing pipes are engaged and connected. The climbing pipe is connected with a fire-fighting device, and the end of the climbing pipe far away from the wall is engaged with a lifting assembly. . The invention replaces the lifting method of the transmission electric hoist device for the frame body and the personnel by setting the rail climbing type overall building construction scaffolding that is easy to disassemble, effectively improving the efficiency of the staff in the process of building construction. At the same time, the device can ensure to a certain extent that the frame and the staff will not shake during the lifting process, increasing the safety of construction.

The invention discloses a multi-segment fireproof cable, and belongs to the field of cables, the multi-segment fireproof cable comprises cable main bodies, a segment ring is connected between two adjacent cable main bodies, the segment ring comprises a fixed ring, two ends of the fixed ring are clamped with elastic joints matched with the cable main bodies, the outer side of the cable main body is provided with an insulation protection layer, and the insulation protection layer is provided with a plurality of insulation layers. The two ends of the insulation protection layer are fixedly connected with the two elastic rings respectively, a plurality of evenly distributed fireproof ropes are fixedly connected in the insulation protection layer, an elastic connecting block is connected between every two adjacent segment columns, and a plurality of elastic supporting layers are fixedly connected to the outer wall of the cable body. When the cable is close to high-temperature flame, the net ring is embedded into the softened elastic supporting layer to form a partition area, and the fireproof performance of the partition area is enhanced through the fire retardant discharged from the fireproof rope, so that the area between the cable main body and an ignition point is enhanced.

The invention discloses an ultra-wide-pressure fine water mist spray head. The ultra-wide-pressure fine water mist spray head comprises a spray head body, wherein a screw plug and a filter screen arearranged at the rear end of the spray head body, a conical surface is arranged on the front end surface of the spray head body, a plurality of nozzles are uniformly distributed on the upper circumference of the conical surface, a swirler is arranged in each nozzle, the swirlers are in threaded grooving and are pressed tightly and mounted in the nozzles by means of spirals, the nozzles are providedwith conical flow channels, a plurality of circumferentially tangent grooves are formed inside each swirler and are fastened and connected with the nozzles through the grooves to prevent water leakage, the screw plug is a cylindrical head screw plug and is in threaded connection with the spray head body, and the filter screen is connected with the screw plug. Under the low medium-high pressure, sprayed water is atomized by the aid of a vortex principle, mist particles are uniform in uniformity, mist drop particles are smaller than 100 micrometers, the spray coverage range is wide, and the application range is wide, therefore, the spray head can be applied to a medium and high pressure water supply system to achieve a strong atomization effect, and also can solve the problem of poor low pressure atomization effect in a gas cylinder pressurized water supply system with insufficient water supply.

The invention discloses a heat insulation and fire prevention device, which includes a box body and a switch door that is rotatably connected to the box body. A tempering device is provided between the inside of the box body and the switch door. The tempering device From the outside to the inside, it is composed of the first outer steel plate layer densely covered with micropores, the first inner steel plate layer and the first airgel composite material layer. The box body, switch door and tempering device are all made of fireproof and heat insulation materials for double protection. This makes the safe of the present invention more fireproof and protective when encountering a fire situation.

The invention discloses an assembly type formwork-removal-free prefabricated floor bottom plate structure. The structure is formed by combining a formwork-removal-free prefabricated bottom plate, longitudinal steel bars, C-shaped light steel, longitudinal stiffening ribs, transverse stiffening ribs and galvanized iron sheet hanging rings. The structural system is light in weight and very convenient to transport, hoist and assemble; according to the structure, the content of concrete is not increased, the content of steel bars is not increased, the cost is saved for a construction party, the aim of fast period is achieved, the workload of deepening design is saved for a design party, the construction progress is accelerated for the construction party, the construction quality is better controlled, and the productivity is completely released for a component producer; therefore, all parties participating in the project obtain respective benefits.