130results about How to "Solve fire problems" patented technology

The invention discloses a flame-retardant waterproof material which can be used in an exterior wall outer insulation system. The material comprises two components which are respectively a liquid material and a powder material. The liquid material comprises the components of: silicone acrylic emulsion, a preservative, a dispersing agent, a defoaming agent, a wetting agent, and water. The powder material comprises the components of: common Portland cement, high-aluminum cement, quartz sand, cellulose ether, a water-reducing agent, and a flame retardant. The material is used in an exterior wall outer insulation system, and solves problems of high flammability and fire-prone property of an organic insulation plate of a current exterior wall outer insulation system during construction and after application. Also, the product has good flexibility and water resistance, such that a problem of reduced insulation effect after the exterior wall cracks and water is let in is solved.

The invention discloses a cast-in-place process for an ultra light foamed cement-based bearing heat insulation wallboard. The process for preparing the bearing wallboard in a mode of directly pouring ultra light foamed cement on site comprises the following steps of: paving a bottom template and side templates to form a concrete forming die; paving a concrete protection layer cushion block on thebottom template, and then pouring fine stone concrete into the concrete forming die to form a reinforced concrete bearing layer; placing a plate frame for sizing and a reinforcing rib combined inner die on the initially non-set concrete of the bearing layer according to the design positions; pouring fine stone concrete into the combined inner die to form a frame and reinforcing ribs; pouring an ultra light foamed cement core material into a groove formed by the reinforced concrete bearing layer, the frame and the reinforcing ribs, forming an ultra light foamed cement heat insulation core layer after initial setting, and reserving the thickness of a waterproof surface layer; pouring waterproof fast hardened cement-based self-leveling mortar to the upper part of the ultra light foamed cement heat insulation core layer before initial setting to form the waterproof surface layer; and detaching the forming die after the waterproof fast hardened cement-based self-leveling mortar is hardened.

The invention discloses a multifunctional forcible-entry firefighting robot; a frame is used as a carrier, a revolving platform is arranged on the frame; a crawler type traveling mechanism is arranged on a frame chassis; a cantilever crane lifting mechanism is mounted in the middle of the revolving platform through a variable amplitude oil cylinder; a hydraulic power system is arranged on the right side of the revolving platform; an electric control remote control system is arranged on the left side of the revolving platform; an extinguishant supply device is arranged at the back part of the revolving platform, and is connected with a forcible-entry firefighting device arranged at the top of a cantilever crane through a self-insurance conveying pipeline via the two sides of the revolving platform and the cantilever crane lifting mechanism; the electric control remote control system controls the hydraulic power system by accepting the command of a remote controller; the hydraulic power system provides power to the traveling mechanism, the cantilever crane lifting mechanism and the forcible-entry firefighting device. The multifunctional forcible-entry firefighting robot is equipment capable of finishing the conventional forcible-entry firefighting task and finishing the forcible-entry firefighting task under a complex environment which is difficult to be approached to and is easy to explode when being approached to.

The invention discloses a fire channeling prevention device for a fuel air explosive warhead. The device consists of an outer barrel, an inner barrel and an agent between the inner and outer barrels, wherein the inner and outer barrels are made from a metal material with higher ductility; the agent undergoes decomposition reaction to release a large amount of gas under the action of thermal or shock compression. The agent is compressed by shock waves generated after the detonation of a central dispersed explosive of the fuel air explosive warhead, and the shock waves can be attenuated by the agent, so that the amplitude of the compressed waves transmitted to an air explosive fuel is lower, and the air explosive fuel is prevented from being heated to burning temperature. After the agent undergoes decomposition reaction to release gas such as CO2, H2O and NH3 after being shocked and compressed, the gas is between a central dispersed explosive detonation gas product and the air explosive fuel, and the high-temperature detonation gas product is separated from the air explosive fuel by the gas, so that the air explosive fuel is prevented from being burnt after the central dispersed explosive of the fuel air explosive warhead is detonated, and the problem of fire channeling is solved.

The invention discloses a reticular dimensional reinforced composite heat preservation rock wool board; the reticular dimensional reinforced composite heat preservation rock wool board is formed by combining a reticular dimensional reinforced rock wool heat preservation board with an organic heat preservation board in an adhering manner; the reticular dimensional reinforced rock wool heat preservation board comprises a rock wool layer, an upper reticular structure layer, a lower reticular structure layer and connecting pieces, wherein the upper and lower reticular structure layers are respectively arranged on the upper and lower surfaces of the rock wool layer, and the connecting pieces penetrate through the rock wool layer to connect the upper reticular structure layer with the lower reticular structure layer. The reticular dimensional reinforced composite heat preservation rock wool board provided by the invention can be applicable to regions with higher requirements on heat preservation and heat insulation; compared with the organic heat preservation board, the tensile strength and wind pressure resistant strength of a heat preservation system can be greatly improved; compared with a traditional rock wool heat preservation board, the thickness of the heat preservation system is effectively reduced, and the safety of the system structure is improved; meanwhile, the reticular dimensional reinforced rock wool heat preservation board on the surface can play the role of a fireproof barrier, so as to form an effective fireproof shield, so that the fireproof performance of the organic heat preservation board is greatly improved, and the fireproofing problem can be solved more radically by adopting the dual-composite mode.

The invention relates to a lignite-drying and quality-improving process for preparing superheated steam from waste heat steam. The process comprises the following operation steps of: firstly, providing a heat source for a heat energy device for preparing the superheated steam from the waste heat steam by using high-temperature flue gas produced by a hot-blast stove; secondly, recycling, purifying and refining waste heat steam produced by a normally-running energy-saving cylindrical lignite-drying and quality-improving device; thirdly, preparing high-temperature superheated steam by using the heat energy device for preparing the superheated steam from the waste heat steam; fourthly, drying wet-based lignite and improving quality by using the energy-saving cylindrical lignite-drying and quality-improving device; and finally, recycling the waste heat steam produced in a drying process by the recycling, purifying and refining steps. The process uses the waste heat steam to dry the lignite and has the characteristics of reasonable design and simple, convenient and smooth route. The device has the characteristics of optimized design, compact structure, small floor area, a small amount of investment, low running cost, high yield, large dehydrating range, safe running, energy conservation, capability of saving power, lowering consumption and reducing emission, wide application range of quality-improved lignite and the like.

The invention discloses a wiring board extension socket support welding machine and a resistance welding technology thereof. The wiring board extension socket support welding machine comprises an automatic extension socket support compensation mechanism, a copper wire feeding mechanism, an extension socket support feeding mechanism, a copper wire straightening mechanism, a vertical extension socket support distributing mechanism, a movable positioning mechanism, a welding mechanism, a mechanical arm assembly, a wire drawing mechanism, a servo horizontal wire drawing assembly, a shearing in-situ translation adjusting assembly, a shearing assembly and a water pipeline system. According to the wiring board extension socket support welding machine and the resistance welding technology thereof,a series of operation such as automatic feeding, automatic conveying, automatic straightening, automatic distributing, automatic positioning, automatic welding, automatic shearing and finished product discharging of copper wires and extension socket supports can be completed, the operation process is full-automatic, manual participation is not needed, the automation degree is high, the extensionsocket supports are firmly welded, the welding effect is good, and the problems that the contact resistance is large, heating is prone to occur, falling-off and outbreak of a fire are prone to occur,the welding efficiency is low, and the labor cost is high due to the fact that a traditional manual soldering mode is adopted can be solved.

The invention relates to a fire-extinguishing projectile, which comprises a fire-extinguishing projectile body and a solid-liquid rocket engine capable of pushing the fire-extinguishing projectile body to move, wherein the fire-extinguishing projectile body is connected with the solid-liquid rocket engine through a connecting part, and a support frame is arranged at the bottom end of the solid-liquid rocket engine, so that the present invention does not require a launching device, but directly relies on its own solid-liquid rocket engine to propel and provide power, the fire-extinguishing projectile can be launched directly at a long distance from the high-rise building, so that the fire-extinguishing projectile can hit the fire-extinguishing area more quickly and accurately, and the fire-extinguishing goal can be achieved, the reaction speed is faster, the working height is higher, the fire-extinguishing ability is stronger, and the safety of people's life and property is more efficiently protected. The invention also relates to a triggering method of the fire-extinguishing projectile, so as to solve the technical problem that the fire-extinguishing projectile in the prior art isprone to accidental contact and explosion.

The invention relates to a fire fighting system using superfine dry powder as an extinguishing agent. The fire fighting system comprises two parts, i.e., a delivery subsystem and a control subsystem, wherein parts of the control subsystem are connected with the delivery subsystem through a pipe network of the delivery subsystem; the delivery subsystem comprises an air compressor, a high-pressure gas cylinder, a safety valve, a check valve, the pipe network, a dry powder extinguishing agent spray nozzle and novel superfine monoammonium phosphate extinguishing power; and the control subsystem comprises a detector, an electric valve, an alarm and a fire fighting control center. A using method of the fire fighting system using the superfine dry powder as the extinguishing agent comprises seven major steps. The fire fighting system disclosed by the invention can be widely used for the extinguishment of the pipe network of a large-scale closed building and has an extensive application prospect and practical significance in the technical field of public security fire fighting.

The invention provides a fireproof composite board with vacuum insulation and decoration functions. The composite board comprises an insulation board, a protection frame, a first protecting layer, a second protecting layer and a decoration panel, wherein the protection frame is in sleeve connection with the outer edge of the insulation board, the first protecting layer is laid on the outer sides of the protection frame and the insulation board, the second protecting layer covers the protection frame and the first protecting layer, and the decoration panel is laid on the outer side, contacted with the other side of the insulation board, of the second protecting layer. The invention also provides a preparation method used for preparing the fireproof composite board with the vacuum insulation and decoration functions. The method comprises steps as follows: a, the insulation board is embedded in the protection frame; b, the first protecting layer is laid on the outer sides of the protection frame and the insulation board; c, the second protecting layer covers the protection frame and the first protecting layer; d, the decoration panel is laid on the outer side of the side, contacted with the insulation board, of the second protecting layer; e, a clamping grooves is formed in the side wall of the decoration panel. The fireproof composite board with the vacuum insulation and decoration functions has good stability and integrates fireproofing, thermal insulation and decoration, and the preparation method is simple and rapid.

The invention relates to a connecting method of prefabricated composite multi-ribbed floor slabs and steel beams of an assembly type steel structure house. Ribbed beams and steel beams at the joints of the multi-ribbed floor slabs and the steel beams are cast in place, and the fire prevention effect of the connecting joints of steel columns and the steel beams and the fire prevention effect of the steel beams are achieved; the multi-ribbed floor slabs are filled with light materials, and the heat insulation effect is achieved; and prefabricated composite multi-ribbed floor slab components are produced in advance and mounted in the field, the field construction speed is increased, lots of revolving materials such as supporting steel tubes, battens, web filmed multilayer boards and bamboo plywood are reduced, the construction speed is increased, and the construction cost is lowered.

The invention relates to a coal anaerobic drying device and a drying system. The device comprises a vertical drying cylinder, a coal inlet, a coal outlet, an air inlet pipe and an air outlet pipe, wherein hot air cavities are respectively arranged outside two lateral walls of the drying cylinder; a certain number of array pipes or array plates are communicated between the two hot air cavities so as to ensure that coal in the drying cylinder and hot air in the hot air cavities and hot air in the array pipes or array plates are completely isolated; a steam pipe arranged inside the drying cylinder is extracted outside the drying device; the coal anaerobic drying system comprises the coal anaerobic drying device and a heating system, wherein a thermometer T1 and a thermometer T2 are arranged at the air inlet pipe port and the air outlet pipe port respectively; a discharge valve and a thermometer T0 are arranged at the discharge port. By controlling the temperature, the device and the system are applicable to both the drying of common coal and coal slime and the drying and upgrading of brown coal, not only can extract surface moisture of the brown coal, but also can remove partial bound water, transforms the brown coal from soft coal to hard coal, transforms the brown coal from hydrophily to hydrophobicity, are convenient for transportation, storage and use, and are favorable to popularization and implementation.

A combustion method for burning abnormal low ash fusion fuel, is of burning solid waste and biomass fuel method and apparatus technical field, using a horizontal type inclination and rotation combustion chamber. The invention keeps a inclination between 2 deg.C to 12 deg.C which is formed between the central axis of the combustion chamber with a insulating layer outside and horizontal plane; the abnormal ash fusion temperature fuel is burning in the combustion chamber, producing liquid slag; the liquid slag flows through the filtering slag apparatus at the end of the combustion chamber, then by disposal of granulation and clarification, the flue gas created enters a tailing flue and completes heat exchange. The invention using a horizontal type inclination and rotation combustion chamber and filtering slag apparatus and slag tapping method, solves the low ash fusion of fuel problem; and the slag tapping method, solves the inflammation problem successfully, raising the boiler operation stability. The invention has no special requirement to particle diameter of fuel, so the cost to dusting system is declined.

The invention discloses a grade-A fireproof efficient homogeneous thermal self-insulation block belonging to the technical field of building materials. The thermal self-insulation block with relatively high strength, relatively low heat conductivity coefficient as well as relatively strong water resistance and weather resistance is formed through reasonably designing the ratio of materials such as ceramsite, fragmented ceramsite particles, a perlite modifier, perlite, perlite powder, cement, coal ash, silica fume, a water reducing agent, a waterproof agent, a power shrinkage reducing agent and water, so that the national requirement for saving energy of a civil building by 75% at present and in future can be met; in addition, all the materials are inorganic materials, and the fireproof performance is up to the grade A, so that fire hazards of a thermal insulation filler wall of an exterior wall are thoroughly eliminated, meanwhile, the aim of saving energy by 75% is achieved, and the national requirements for the fireproof grade of an external thermal insulation product of the exterior wall and a higher energy-saving standard are met; and the production process is simple, and the grade-A fireproof efficient homogeneous thermal self-insulation block has a relatively high popularization value and a very wide market prospect.

This invention discloses a ceramic air heating furnace with the emulsification slurry wind burning device including vertical air heating furnace and the emulsification slurry wind burning device. The air heating furnace includes an egg-shape furnace chamber and the heat air opening. The emulsification burning device consists of a front end wall, back end wall and the side crust inside which forms a cylindraceous burning space. There are at least one emulsification burning device and at least a fuel burning device or at least air burning device. The back end wall has an outlet opening which connects to the egg-shape furnace chamber by the pipe. The side of the crust sets two or more tangential wind inlet openings and there are at least one dreg outlet opening near the back end wall at the side of the bottom of the burning space. The ceramic air heating furnace of this invention utilizes the emulsification burning device and the emulsification slurry as fuel so as to save the cost and maximize the utilization of the resource.

The invention relates to an oxygen-free surface water drying system and a surface water drying technology for material, wherein the oxygen-free surface water drying system comprises a drying device and a heating system; the drying device comprises a vertical drying cylinder and a coal inlet, a coal outlet, an air inlet pipe and an air outlet pipe which are arranged at the upper end and the lower end of the vertical drying cylinder; the outer sides of two side walls of the drying cylinder are respectively provided with a hot-gas cavity; a certain number of rack pipes or rack plates are communicated between the two hot-gas cavities to lead the coal in the drying cylinder to be completely separated from the hot gas in the hot-gas cavities and the rack pipes or the rack plates; the orifices of the air inlet pipe and the air outlet pipe are respectively provided with a thermograph T1 and a thermograph T2, a discharge hole is provided with a thermograph T0, a steam tube is arranged in the drying cylinder and led out of a drying device, drying is conducted at normal atmosphere, and the temperature of T1, T2 and T0 is controlled to remove the surface water of the material. The invention completely solves the problem of firing and explosion caused by combustible gas precipitation, is not only applicable to oxygen-free surface water drying of coal, but also applicable to the drying of chemical products, industrial and municipal sludge, metallic and nonmetallic minerals, coal slime and the like.

The invention relates to the technical field of fireproof and heat-preservation wall boards and discloses a flexibly-connected high fireproof and heat-preservation wall board and a construction method thereof. The flexibly-connected high fireproof and heat-preservation wall board comprises a reinforced concrete wall body which comprises an inner wall surface and an outer wall surface; the inner wall surface and the outer wall surface are internally paved with reinforcement cages, and the ends of the peripheries of the inner wall surface and the outer wall surface are provided with closing plates; fireproof layers and heat-preservation layers are arranged between the inner wall surface and the outer wall surface, and connecting pieces are connected between the reinforcement cages inside the inner wall surface and the outer wall surface; and the fireproof layers are arranged on one side or the two sides of the heat-preservation layers. The flexibly-connected high fireproof and heat-preservation wall board is provided with closed cavities, has good heat-preservation and fireproof property and is good in durability, high in anti-shearing strength and anti-bending strength, convenient to construct, fast in construction and efficient.

The invention discloses a power grid fire high-lift charged extinguishing device which comprises a chassis, an automatic water agent mixing unit, a water agent boosting unit and a water mist output unit, wherein the automatic water agent mixing unit and the water agent boosting unit are installed on the chassis, the automatic water agent mixing unit, the water agent boosting unit and the water mist output unit are connected in sequence, the automatic water agent mixing unit comprises a water tank and a fire extinguishing agent tank, the water tank is connected with the water agent boosting unit through a water pipeline, the fire extinguishing agent tank is connected with the water agent boosting unit through a fire extinguishing agent pipeline, a first flow control valve is arranged on the water pipeline, and a second flow control valve is arranged on the fire extinguishing agent pipeline. The device can be used for quickly performing charged extinguishment on a field power grid, the problems of line tripping and electric shock during extinguishment are solved, and the device has the advantages of water conservation and high lift during the extinguishment.

The invention relates to a fixing tool between a sand mold and a sand core for casting, and provides a self-locking type sand core standard core tool. The self-locking type sand core standard core tool comprises a standard core rod segment pre-embedded in a sand core and a standard core cap segment embedded in a corresponding sand mold. The standard core rod segment and the standard core cap segment are simultaneously pre-embedded in the sand mold to generate self-locking, so that the defect that a standard core adhesive is heated at high temperature to evaporate gas so as to easily cause choke is overcome; casting dimension deviation is easily caused by insufficient standard core strength; a screw channel is reserved to realize the firm fixation of the sand core and prevent sand core fromshifting when a box is closed, so that pouring choke is prevented, the casting dimension is ensured, and the defects of sand clamping and leak-out due to the standard core are prevented; the steps ofreserving a standard core through hole in the sand core and filling sand at a later stage are avoided, and the problem that loose sand falls into a mold cavity due to the sand core standard core is fundamentally solved; and the sand core drift is reduced by the firm connection between the standard core cap segment and the standard core rod segment.

The invention relates to a high-rise multifunctional mobile intercommunication type fire fighting platform and a fire fighting method thereof. The high-rise multifunctional mobile intercommunication type fire fighting platform comprises a peripheral advertisement board, a frame system and a motion track, wherein the peripheral advertisement board is arranged on the outer side of the frame system,and the motion track is fixedly arranged on the outer facade of a building; when the frame system is in a non-working state, the frame system moves to the top of the building along the motion track; at the moment, the platform can be used as an outdoor large advertisement frame as a whole; and when the frame system is in a working state, the frame system moves up and down on the outer facade of the building along the motion track.

The invention discloses an exterior insulation compound wall body with a support meeting the fire-resistance limit requirement and a protective layer, relates to a fire-protection construction for the compound heat preservation wall body of a building, and aims to solve the problem that the fire resistance of the exterior insulation compound wall body is poor. The exterior insulation compound wall body adopts the structure as follows: the support is fixed on a main structure of the building, and meets the fire-resistance limit requirement; a thermal insulation layer is positioned outside a base course wall body and the main structure of the building, the protective layer is positioned outside the thermal insulation layer, and bar reinforcements inside the protective layer are connected with the support; the protective layer or a fire-resistant isolation zone is arranged on an opening thermal insulation layer; the protective layer is arranged outside the fire-resistant isolation zone; the protective layer meets the fire-resistance limit requirement, and the fire-resistant isolation zone is made of a heat insulating material meeting the fire-resistance limit requirement; and the exterior insulation compound wall body with the support meeting the fire-resistance limit requirement and the protective layer can be formed. The exterior insulation compound wall body thoroughly solves the fire-resistant safety problem of the exterior insulation compound wall body, achieves good fire-resistant performance, is convenient to construct, achieves low construction cost, and is of great significance to lives and properties of people.

The invention provides a cast-in-place light solid composite wall body of a light steel truss frame and a construction method thereof. The framework is a wall body light steel truss; the wall body light steel trusses are intermittently distributed in the composite wall body in the vertical direction; two chord rods are arranged at the internal side and the external side of the wall body respectively; the internal side of the light steel truss is covered by an internal side prefabricated plate; the external side of the light steel truss is fixedly connected with cushion blocks which are distributed in point shape; the external side of the cushion block is covered by an external side prefabricated plate; a heat-preservation filling material is filled between the internal side prefabricated plate and the external side prefabricated plate and in the clearance of the light steel trusses; the bottom of the light steel truss 4 is fixedly connected with the concrete foundation; and the top of the light steel truss is fixedly connected with the floor light steel truss. The wall body has the advantages of simple procedure, quick construction, high efficiency, low cost, and the like; simultaneously, the light steel composite structure also has the advantages of good sound insulation effect, good heat preservation performance, light load, and the like, and overcomes the hollow box characteristic of the traditional steel structure wall plate, and the filled foaming cement can lead the wall body to be solids.

The invention discloses a fireproof treatment method for an air pipe. The method comprises the steps as follows: a, coating the outer surface of the air pipe with a layer of antirust paint; b, coating the surface of the dried antirust paint with at least a layer of fireproof paint to form a fireproof layer for fireproof protection; and c, coating the outer surface of the dried fireproof layer with a layer of finish paint, and baking or naturally drying to finish the fireproof treatment of the air pipe, wherein the fireproof paint is a thick steel structure fireproof paint, a thin steel structure fireproof paint or an ultrathin steel structure fireproof paint; and the fire endurance limit of the thick steel structure fireproof paint, the thin steel structure fireproof paint or the ultrathin steel structure fireproof paint is 0.5-3 hours. According to the fireproof treatment method, the air pipe can be directly subjected to the fireproof treatment, the treatment process is simple and quick, the air pipe after the fireproof treatment is fireproof and can be directly mounted for use, a large amount of spaces and floor areas can be saved, and the air pipe after the fireproof treatment is stable and reliable in fireproof performance, low in cost and good in appearance.

The invention discloses an industrial waste incinerating box with high safety performance. The industrial waste incinerating box with high safety performance comprises a base; the right side of the top of the base is fixedly connected with an incinerating box; the bottom of an inner cavity of the incinerating box is fixedly connected with an incinerator; the left side of the incinerating box communicates with a feeding box; the left side of the top of the feeding box is fixedly connected with a feeding device; a material pushing rod penetrates through the bottom of the feeding device; and the bottom end of the material pushing rod penetrates through the top of the feeding box and is fixedly connected with a material pushing block. The invention relates to the technical field of industry. The industrial waste incinerating box with high safety performance can feed materials automatically, can perform spraying fire-extinguishing treatment on a connecting position between the incinerating box and the feeding box, solves the problems that fire is caught at a communicating position between the incinerating box and the feeding box caused by feeding excessive materials and the materials are required to be fed manually in the conventional industrial incinerating box, prevents working personnel from being burnt, improves the safety performance of the industrial waste incinerating box, improves the work efficiency of the working personnel, and meets using requirements of a user.

The invention relates to a solar member for a building. The solar member comprises a photovoltaic assembly, a junction box, a connector, a frame, a filling material and a member backboard. A solar heat collector or a metal plate is employed as a photovoltaic assembly backboard, and a heating electronic device and the frame or the photovoltaic assembly backboard are contacted for heat dissipation; the photovoltaic assembly and the member backboard are installed in a fixation groove corresponding to the frame to form an enclosed space, and an integral member module is formed by bonding the filling material; the outer side surface of the frame is provided with a radiator and a heat conduction pipe for conducting solar energy to a solar heat collection system; and a refrigeration and heating apparatus is integrated on the photovoltaic assembly backboard and the member backboard, and an isolation layer is clamped between the photovoltaic assembly backboard and the member backboard. According to the invention, the solar member for the building can be used for photovoltaic generating and solar heat collection and temperature adjustment, can directly replace a decoration material, an insulation material, a waterproof material, an exterior-protected construction material and an air conditioning device on the roof or the wall of the building, and can also be integrally installed with the roof or the wall of an existing building so as to realize photovoltaic building integration.

The magnesian flame-resistant and explosion-free oil tank comprises of an inner tank, outer tank and bracket, with the inner tank made of steel plate and inside the outer tank, and some magnesian sand particles or the mixture of it with the expanded pearlite particles filled within the gap between them. The outer tank is made of glass fiber reinforced plastic. With flame-resistant and fire-retardant magnesian materials filled within the inner and outer tanks, it is efficient in fire preventing. Besides, it is antiseptic, abrasion resistant, light in weight, low of cost, shock preventing, and fine in appearance, so as to make it particularly applicable in skid mounted oil filling station.

The invention discloses a spraying system for building fire fighting. The spraying system comprises a rainwater collecting unit, a filtering and screening unit and a water supply and spraying unit. The rainwater collecting unit is mounted on the outer wall of a building. The filtering and screening unit is mounted on the rainwater collecting unit. The spraying system has the beneficial effects that the structure is simple, the system connection is easy and convenient, and the operation is convenient; the rainwater collection unit, the filtering and screening unit and the water supply and spraying unit are arranged, rainwater is collected through the rainwater collecting unit, rainwater is filtered and screened through the filtering and screening unit, and finally, rainwater is controlled to be sprayed through the water supply and spraying unit; and the whole device is mounted on a balcony based on a single household design, the aesthetic degree is increased, the indoor space is not occupied, rainwater is used as fire fighting water, a multi-connecting pipeline does not need to be laid, the construction difficulty is reduced, the problem of fire fighting of a single household in a high-rise residential building is solved, and the fire fighting rapidity and safety are improved.

The invention discloses an engine-boiler integrated tube nest type combustion engine and a device thereof for recovering the three wastes. The combustion engine is composed of a hearth in a membrane type wall structure, an air supply chamber and a plenum chamber, wherein the air supply chamber is provided with an air inlet pipe; the plenum chamber is provided with a fuel gas inlet pipe; the inner wall of the air supply chamber is provided with a certain quantity of air pipes which are communicated to the heath in a membrane type wall structure; and the inner wall of the plenum chamber is provided with a certain quantity of gas pipes which are communicated to the hearth in a membrane type wall structure. The device for recovering the three wastes comprises a mixed combustion furnace, a separator and a waste heat boiler, wherein the lower part of the mixed combustion furnace is an ignition section, the middle part thereof is a boiling combustion section, and the upper part thereof is a cylinder; the upper end of the mixed combustion furnace is a coal slime inlet, the boiling combustion section main body of the mixed combustion furnace is the engine-boiler integrated tube nest type combustion engine, and the boiling section is internally provided with a boiling bed; and a solid waste inlet pipe and a refeed line are arranged at the outer sides of the heath at the boiling combustion section respectively, and a high-abrasive material layer is arranged at the inner side of the heath at the boiling combustion section. The invention has the characteristics of high heat efficiency, full combustion and stable operation.

The invention discloses an ignition device of a natural gas engine. The ignition device comprises an injection body, an injection head and a sparking plug; the injection body is cylindrical, a sparking plug installation counter bore is formed in the upper end of the injection body, and a gas channel is formed in one side of the sparking plug counter bore; an injection head installation counter bore communicated with the sparking plug installation counter bore and the gas channel is formed in the lower end of the injection body; the injection head is barrel-shaped, the upper end of the injection head is installed in the injection head installation counter bore to form a combustion space, and a flame injection hole is formed in the lower end of the injection head; the sparking plug is installed in the sparking plug installation counter bore, and an electrode at the lower end of the sparking plug stretches into the combustion space. According to the ignition device of the natural gas engine, the step-by-step combustion flame injection technology is adopted, a small quantity of rich gas mixture is ignited through a little ignition energy, a great deal of lean gas mixture is ignited after flames are produced, and therefore the successive combustion mode of the rich gas mixture in the combustion space and the lean gas mixture in a combustion chamber is achieved. The ignition device of the natural gas engine is reasonable and simple in structure, low in ignition energy requirement, and good in durability and ignition stability.