87results about How to "Reduce installation and construction costs" patented technology

The invention discloses an integrated system for generating electricity by current, sea wave as well as tide kinetic energy and wind and solar energy, comprising a wind energy generator set, a solar energy generator set and a current kinetic energy generator set. The wind energy generator set mainly consists of a wind wheel, a drive system, a generator, a control protection system and a tower; thesolar energy generator set mainly consists of a solar energy battery pack, a solar energy controller and an inverter; and a floated current kinetic energy generator set or a layered columnwise current kinetic energy generator set are adopted for the current kinetic energy generator set. Alternating current generated by the wind energy generator set, the solar energy generator set and the currentkinetic energy generator set is transported and accesses to the Internet. The generating system uses wind power to generate electricity when the wind energy exists, uses light energy to generate electricity when the light energy exists and uses the current kinetic energy to generate electricity when the current kinetic energy exists, i.e. the wind energy, the light energy and the current kinetic energy can complement each other, can apply work together and can be used for circularly generating electricity. The invention has simple structure and lower cost, thereby being beneficial to popularization and environmental protection.

The invention discloses a floating fan base with flare type tension legs, a marine wind-driven generator and a construction method. The floating fan base comprises a top supporting platform, a bottom supporting structure, at least three hollow stand columns and a ballast regulating system, wherein the top supporting platform is used for supporting a pylon, blades and a wind-driven generator set; the bottom supporting structure is connected with multiple tension legs; the top supporting platform is connected with the bottom supporting structure via the hollow stand columns, the hollow stand columns are arranged around the vertical center line of the floating fan base, and each stand column inclines outwards from a lower end to an upper end relative to the vertical center line of the floating fan base; the ballast regulating system is arranged in the stand columns and / or the bottom supporting structure. The marine wind-driven generator of the base with the structure has excellent movement performance, integral wet towing can be performed, and the floating fan base and the marine wind-driven generator are convenient to manufacture, assemble and mount.

The invention belongs to the technical field of liquid pistons, and particularly relates to a liquid piston device with isothermy scaling of air achievable and with temperature controlled inside. According to the liquid piston device with the isothermy scaling of the air achievable and with the temperature controlled inside, the top portions of two liquid piston chambers are respectively connected with a high pressure gas pipeline and a low pressure gas pipeline, the bottom portions of the two liquid piston chambers are both connected with an external hydraulic set through respective liquid pipelines, and a plurality of intracavity liquid storage units are arranged in the liquid piston chambers. When the liquid piston device operates, liquid stays in the intracavity liquid storage units, and the liquid storage units are used for increasing the contact area between the liquid and the air to improve heat exchange speed between the liquid and the air, and liquid temperature is used for controlling air temperature to achieve the isothermy scaling of the air. The intracavity liquid storage units are of two basic structures, have multiple enhancement type temperature control modes such as the spraying mode, the liquid circulation mode, and the air filtering mode, and can be realized through one or multiple combination types.

The invention discloses a dual-axis tracking type photovoltaic or photo-thermal support. The support includes left and right bearing frame arranged at two ends of a longitudinal direction, a flexible cable rack is arranged between corresponding flexible cable rotation units on the left and right bearing frames, the flexible cable rack includes sag cables, first horizontal load cables and second horizontal load cables which are arranged on the front and rear side vertical cable bodies of corresponding rectangular flexible cable frames of the left and right bearing frames from top to bottom; two ends of the sag cables and the first horizontal load cables are fixed to the front and rear side vertical cable bodies of the corresponding rectangular flexible cable frames, and two ends of the second horizontal load cables bypass lifting fixed pulleys on the front and rear side vertical cable bodies of the corresponding rectangular flexible cable frames to be connected with a corresponding lifting driving device; and a plurality of droppers are arranged between the sag cables located on the front and rear side vertical cable bodies of the rectangular flexible cable frames and the first horizontal load cables at intervals along a longitudinal direction. The dual-axis tracking type photovoltaic or photo-thermal support provided by the invention is simple and stable in overall structure, low in cost, and simple and accurate to adjust, and is suitable for engineering popularization and application.

The invention relates to a method for water-power engineering mixing sand making which includes the following steps: 1) feeding stones in a crushing unit and crushing; 2) screening the stones with the grain under 40mm crushed by the crushing unit in a screening unit; 3) feeding aggregate in a second sand making raw material bin (II) into an impact type crusher and curshing, and feeding the crushed mixture in a vibration screen (16) dehydrating and grading; 4) feeding the aggregate with the grain size of 5-20mm in a first sand making raw material bin in a rod mill and crushing, feeding the crushed sand into a third spiral sand washer (12), then feeding into a product sand bin (20) after dehydrating in a third dehydrating screen (15). The method updates a traditional sand making method and uses the impact crushing machine to serve as main sand making equipment in a sand making process, and the impact type crusher machine, the rod mill, the vibration screen and the like jointly form a mixing sand making method applicable to water-power engineering. The system and the method can achieve high-strength production and meet high-quality requirements, reduce building and installation cost, improve the whole use ratio of the equipment and reduce cost.

The invention provides a basic structure of an offshore wind measuring tower, comprising: providing buoyancy when the wind measuring tower is towed and serving as a base of the wind measuring tower after the wind measuring tower is sunk; Links that are connected as a whole; and a control system that controls and adjusts the transportation and laying status of the wind measuring tower.

The invention relates to a manufacturing method of a creeping-resisting aluminium alloy conductor interlocking armoring optical-fiber composite low-voltage cable, comprising the following steps: (1) manufacturing an aluminium alloy rod; (2) manufacturing a round single wire; (3) drawing a heterotypic single aluminium wire; (4) carrying out thermal refining to obtain a heterotypic soft aluminium single wire; (5) carrying out twisting to finish a conductive wire core; (6) extruding an insulating wire core; (7) carrying out cable laying; (8) carrying out interlocking armoring; and (9) carrying out extrusion to form a sheath. The manufacturing method has the advantages that: (1) the electric conductivity can reach 61 percent or above IACS (international annealed copper standard); (2) the filling coefficient of the conductor can be increased to 0.95; (3) S-shaped interlocking armoring is adopted, the armored cable has high flexibility and strength, the minimum bending radius is 7D, the pipe penetrating and bridging of the cable can be greatly reduced, and more than 20 percent of construction expense can be saved in common building projects; (4) the processing technique for insulation and sheathing is optimized and is easy to control, and good processing size can be obtained; (5) the design and selection of a common mould and a cable laying twisting pitch are optimized, and an optical unit can be completely ensured to be in a controllable range; and (6) aramid fiber armoring is adopted to the optical unit, and the mechanical strength of the optical unit is improved.

The invention belongs to the technical field of compressed air energy storage, and particularly relates to an internal temperature control liquid piston device capable of isothermally compressing and releasing air on the basis of air storage units. The device comprises one or more liquid piston cavities formed by pressure containers, and a high-pressure air pipeline and a low-pressure air pipeline, which are connected with the liquid piston cavities through air valves, wherein the lower parts of the liquid piston cavities are connected to external hydraulic equipment through liquid valves; one or more air storage units are arranged in each liquid piston cavity; the air storage units independently run respectively, or are cascaded to run; a top valve is arranged between every two adjacent air storage units; the low-pressure air pipeline is connected with the inner tops of the liquid piston cavities; if the air storage units independently run respectively, the high-pressure air pipeline is connected with each air storage unit; if the air storage units are cascaded to run, the high-pressure air pipeline is divided into two branches, the first branch is connected with the inner bottoms of the liquid piston cavities, and the second branch is connected with the inner tops of the liquid piston cavities.

The invention provides a thin shell nested pressure test chamber device including a test cabin body and a cabin cover matched with the test cabin body, the test cabin body is formed by connection of the upper end surface of a pressure cabin and the pressure cabin wall, the upper end surface of the pressure cabin is in a short column circular shape, the pressure cabin wall at least includes two pressure resistant shells comprising an inner shell and an outer shell, a liquid filling medium is fully filled between the inner shell and the outer shell, a closed U type cavity between the shells and an inner cavity of the shell are respectively with a pressure adjustable energy storage pressure stabilizer by an active and passive pressure balance regulation system. The thin shell nested pressure test chamber device can be prepared by rolling an industrial steel plate by multilayer wall nesting mode, so that construction of a super large diameter high-pressure test chamber is possible, a sealed cap is convenient to assemble and disassemble, the thin shell nested pressure test chamber device can be repeatedly used, and has broad application prospects.

The invention discloses a processing system and a processing method for compatible processing of a natural material gravel and artificial hard rock and gravel. The processing system comprises a stock bin, wherein a coarse crushing device is arranged below the stock bin, and matched with a first screening device; a medium crushing device is arranged behind the first screening device and matched with a second screening device; an ultra-crushing device is arranged behind the second screening device and matched with a third screening device; a rod mill is also arranged inside the processing system. By adopting the system and the method, two independent single-material source gravel systems, namely a land natural material gravel system and an artificial hard rock and gravel system are merged into a hard rock and gravel system and a natural material processing system, and can be compatible to treatment of two gravel materials. Staged production is adopted in a production form; screening equipment is designed according to the natural material when processing equipment is prepared, the crushing equipment is designed according to an artificial material, the maximal load demands are met, and flexible adjustment is carried out through a sealing-tape machine and a slide chute in the staged production, so as to adapt to the requirements of characteristics of different material sources.

The invention discloses a positioning plate for butt joint of steel columns. The positioning plate comprises a first connecting plate and a second connecting plate, wherein a plurality of protrusionsare arranged on one side edge of the first connecting plate, a plurality of concave parts matched with the protrusions are arranged on one side edge of the second connecting plate, and the first connecting plate and the second connecting plate can be attached through the protrusions and the concave parts. The invention further discloses a welding and installation method for upper and lower steel columns by using the positioning plate. The first connecting plate and the second connecting plate of the positioning plate are mounted on the side faces of butt-joint parts of the two steel columns respectively, and the steel columns can be quickly positioned through insertion fit of the first connecting plate and the second connecting plate.

The invention relates to a biogas liquid pipeline fertilization device, which includes waste water disposal pump placed at the bottom part of the biogas liquid storage pool, the inverted valve which is placed above the immersed type waste water disposal pump, the liquid inlet tube which is connected to the inverted valve, the main tube which is connected to the liquid inlet tube, the fast pressure-relief valve and gate valve which are installed on the main tube, many branch tubes which are connected to the main tube, the water outlet pile which is connected to the main tube or the branch tube, the control valve which is fixed on the said water outlet pile, the soft tube which is connected to the water outlet pile, the deposit collecting tubes which are installed at the bottom part and the right angle corner of the main tube and branch tubes, the outlet valve which are installed on the said main tube and the branch tubes. The biogas liquid pipeline fertilization device can fertilize the field, which is good for environmental protection, and has the advantages of low cost and long lifespan.

The invention discloses an independent micro-grid capacity configuration containing photo-thermal power generation. The method specifically comprises the following steps: step 1, establishing an independent hybrid energy micro-grid model; step 2, setting an optimization target and constraints; and step 3, determining a coordination scheme under the priority of each optimization target. According to the independent micro-grid capacity configuration method containing photo-thermal power generation, a three-objective optimization model for capacity configuration of an independent hybrid energy micro-grid containing photovoltaic, photo-thermal, fan, energy storage and diesel generator is established by taking comprehensive economic cost, power supply reliability and renewable energy utilization rate as optimization objectives; an improved multi-target grey wolf optimization algorithm is used for solving the model, and the obtained configuration scheme has high feasibility and effectiveness.

The invention relates to a modular external-hanging type scaffold. The scaffold comprises a protective net rack arranged at one side of each walking platform, the walking platforms and the protective net racks are arranged in pairs to form an integral modular structure which is laid in a sectional mode along a building or a structure wall and can be spliced together. The walking platforms and the protective net racks matched with the walking platforms form the modular structure, in on-site construction, a constructor can make multiple scaffold modules according to the technical scheme, the length of each scaffold module can be set to be fixed size or set to be a combination of different sizes, and therefore construction of building walls of different lengths and building wall corners or corners can be adapted. Accordingly, the scaffold is set to be of a modular structure, assembling and disassembling are convenient, the transportation and storage cost is greatly lowered, splicing combination is easy, reusing can be conducted, the construction cost is greatly lowered, waste of materials and labor is avoided, and the construction efficiency is effectively improved.

The invention provides an offshore wind power foundation, an installation method thereof and a wind generating set. The offshore wind power foundation comprises the following parts: a floating box, wherein a cavity is formed in the floating box, and a through hole communicating with the cavity is formed in the upper surface of the floating box; a suction cylinder, which is arranged on the lower surface of the floating box; and a jacket, which is arranged on the upper surface of the floating box. According to the offshore wind power foundation, the self-floating capacity can be achieved, self-installation can be achieved, the installation time can be saved, and the wave load can be reduced.

The invention relates to a coal-leveling device and a coal-leveling method. The coal-leveling device comprises a coal-leveling device trolley, wherein the coal-leveling device trolley consists of a small frame, a walking mechanism, electro-hydraulic single-cylinder dual push rods, a gear motor and a coal-leveling mechanism, wherein the coal-leveling device trolley can move reversely along a trolley walking track; the top of a coal cabin between dual tracks of the trolley walking track is provided with a coal-leveling hole; the gear motor is arranged on the small frame; the lower part of the gear motor is connected with the coal-leveling mechanism through the electro-hydraulic single-cylinder dual push rods; the coal-leveling mechanism extends into the coal cabin through the coal-leveling hole; the coal-leveling mechanism can be driven to move upwards and downwards by the electro-hydraulic single-cylinder dual push rods; the electro-hydraulic single-cylinder dual push rods and the coal-leveling mechanism can rotate around a horizontal direction under the driving action of the gear motor. According to the coal-leveling device and the coal-leveling method, a mechanical coal-leveling way is adopted, so that the effective volume of a large-sized storage coal cabin is increased, single-row material-distributing wires on the cabin top can be adopted instead of dual-row material-distributing wires, and the distribution equipment cost is saved; the floor space of a material-distributing plant and other facilities on the coal cabin top is reduced, and the engineering building cost is saved.

The invention provides an LED dimming system. The LED dimming system comprises an alternating current input power supply, a control unit, a loading device, a first zero cross detection circuit, a data sampling circuit, a controller and a bypass circuit, wherein the input end of the control unit is connected with an alternating current input first end; the loading device comprises a rectifier circuit which is used for rectifying an output signal of the control unit so as to generate rectifying voltage; zero cross detection is carried out on the rectifying voltage by the first zero cross detection circuit so as to generate a first zero cross detection signal; the rectifying voltage is sampled by the data sampling circuit so as to generate a data sampling signal; a bypass control signal is generated by the controller according to the first zero cross detection signal and the data sampling signal; the bypass control signal is used for controlling the switching On and Off of the bypass circuit and bypass resistance when the bypass circuit is switched On, a conducting loop is formed by the alternating current input power supply, the control unit and the bypass circuit when a bypass switch is turned on, and the conducting loop is broken off when the bypass switch is turned off. The LED dimming system can replace a traditional thyristor diming system and can further be applied to an intelligent lighting system. The cost and standby power consumption can be low.

A floating LNG production platform comprises an upper module 1, a floating body 2, a fixed gravity tank 4 and a suction pile 5, wherein the floating body 2 has a hollow structure; the fixed gravity tank 4 is fixedly connected with the lower part of the floating body 2; and the suction pile 5 is fixedly connected with the fixed gravity tank 4. An LNG liquid cargo compartment 3 is arranged in the hollow part of the floating body 2; a plurality of adjustable buoyancy tanks 21, a fixed buoyancy tank 21 and a limiting device 23 are arranged on the tank wall of the floating body 2; the adjustable buoyancy tanks 21, the fixed buoyancy tank 21 and the limiting device 23 are annular chambers and arranged in a concentric manner; the suction pile 5 is a cylindrical structure with the closed upper endand the open lower end; the fixed gravity tank 4 is in communication with a mortar pump inlet pipe 25; an exhaust port 28 is formed in the fixed gravity tank 4; the upper module 1 comprises an LNG production unit 10, an LNG unloading unit 11 and a ballast water control unit 12; and the LNG production unit 10 receives raw material natural gas, which is transmitted by a seafloor natural gas wellhead unit 8, through a seafloor hose 7. The floating LNG production platform has the advantages that the floating body can be automatically righted because the floating body is towed to the site in a wetmanner; the floating body is convenient and safe to transport and mount; the upper module is mounted without the coordination of a large floating crane; equipment such as a mooring system is not needed; the structure is simplified; and the mounting and building cost is reduced.

The invention relates to a driller tower hoisting device used for mounting a driller tower and a using method of the driller tower hoisting device. The driller tower hoisting device comprises the driller tower, a tower base, a slideway or a ground guide rail and a hoisting machine, wherein the tower base is fixed at one end of the slideway or the ground guide rail; the driller tower is horizontally placed on the slideway or the ground guide rail after being assembled, and the foot part of the driller tower is provided with a sliding device which can move back and forth on the slideway or the ground guide rail; and the surface of the tower base is provided with the hoisting machine, and a steel wire rope of the hoisting machine is connected with the lower part of the driller tower through a pulley. The tower hoisting device also comprises a tripod, wherein one endpoint of the tripod is hinged with the tower base; the side surface of the driller tower is provided with a guiding device; and the other endpoint of the tripod is in slide fit with the guiding device through a slide mechanism. The driller tower hoisting device is slightly affected by the field natural environment during tower hoisting, large-scale hoisting auxiliary equipment is not needed, and only the equipment on the drilling tower is used for hoisting and mounting the tower, so the mounting construction cost is saved.

The invention belongs to the technical field of novel heat preservation walls. The invention provides a thermal insulation module connecting piece and a thermal insulation integrated structure. The connecting piece comprises a connecting sleeve, a positioning plate is arranged at one end of the connecting sleeve; a notch for fixing a steel wire mesh is formed in the positioning plate; connecting discs sleeve the outer side of the connecting sleeve; a through hole for accepting the connecting sleeve to penetrate through is formed in the middle of each connecting disc; the number of the connecting discs is two, reinforcing holes are formed in the connecting sleeve in the circumferential direction; reinforcing ribs penetrate through the reinforcing holes. The connecting piece also includes amain body reinforcing steel bar, a bearing layer is poured on the main reinforcing steel bar; a thermal insulation layer is arranged on one side of the bearing layer; a protective layer is arranged onone side of the insulating layer away from the bearing layer; and a steel wire mesh is arranged in the protection layer, a steel wire mesh is arranged in the notch, a thermal insulation layer is clamped between the two connecting discs, and the sides, away from the steel wire mesh, of the reinforcing ribs are fixedly connected with the main body steel bar, so that the technical problem that in the prior art, a protection layer in a thermal insulation structure employing a split connecting bridge structure is prone to falling off is solved.

Disclosed are a cantilevered large-flying-wing unit type curtain wall system and an installing method thereof. The curtain wall system comprises a main body steel beam and flying wing units. The outerside surface of the main body steel beam is provided with a plurality of connecting corner connectors. Each flying wing unit comprises two flying wing crossbeams. The inner end of each flying wing crossbeam is fixed to the inner side of the corresponding connecting corner connector. The flying wing crossbeams are fixedly connected with a first connecting beam, a second connecting beam, a third connecting beam, a fourth connecting beam and a fifth connecting beam. The top surface and the bottom surface of the main body steel beam are fixedly connected with a sixth connecting beam and a seventhconnecting beam correspondingly. In the same flying wing unit, the tail ends of the corresponding first connecting beam, the second connecting beam, the third connecting beam, the fourth connecting beam, the fifth connecting beam, the sixth connecting beam and the seventh connecting beam are connected through a supporting crossbeam. The exterior of each flying wing unit is provided with a first aluminum plate, a second aluminum plate, a third aluminum plate, a fourth aluminum plate, a fifth aluminum plate and a sixth aluminum plate. According to the cantilevered large-flying-wing unit type curtain wall system and the installing method thereof, the on-site installation procedure can be reduced, the installation cost is reduced greatly, and the appearance effect of a building can be effectively ensured.

The invention discloses a fault oscilloscope working condition information remote monitoring, maintenance and rapid browsing system. The system comprises fault oscilloscopes, a monitoring center and a monitoring unit, wherein the mobile monitoring unit comprises an overhead track along a power grid line, a rail car and a positioning mechanism which are arranged on the overhead track, and a monitoring terminal arranged on the rail car, the monitoring terminal comprises a sensor module, a control module, a video monitoring module, a first communication module and an ultrahigh-frequency omnidirectional sensor receiving amplification module, the fault oscilloscopes are connected with the monitoring center through the second communication module, the lower end of the rail car is provided with an aircraft through a suspension mechanism, and the lower end of the aircraft is rotationally provided with the ultrahigh-frequency omnidirectional sensor receiving amplification module. According to the invention, whole power grid information and equipment information can be monitored merely by use of a small amount of sensors, and through cooperation with the fault oscilloscopes of the power grid line, fault points are timely and rapidly sought and positioned.

The invention discloses a method for building a dock by lifting precast panels with a simple portal crane, comprising the following steps of: 1) paving a dock platform transverse first end edge plate and installing a track; 2) installing and debugging the simple portal crane on a precast longitudinal beam; 3) lifting the track by the simple portal crane, and paving the track in an extending way; 4) lifting the precast panels by a mini type floating crane, and paving a row of the precast panels by the lifting and positioning of the simple portal crane; 5) repeating the steps 2)-4) to pave the precast panels in the middle of the dock row by row; and 6) paving a dock platform transverse second end edge plate, so that the lifting and the paving of all the precast panels of the dock platform can be completed, and a concrete surface layer and various accessory structures of the dock platform can be precast. According to the method, the installing difficulty of the extra large-width dock precast panels of which widths are more than 60m can be overcome, the installing and construction cost can be greatly reduced, the installing progress can be shortened, the installing quality can be improved, and the construction efficiency and the construction security can be improved.

The invention relates to a flat solar heat collection heating insulation curtain wall and a roof and a ventilation air conditioning system. The curtain wall comprises a fireproof insulation plate 1, a flat solar heat collection heating insulation curtain wall body 2, the ventilation air conditioning system 3 and a solar air conditioning equipment pipe system 4; the curtain wall body 2 consists of a flat solar heat collector, an insulation bar and a plastic wood batten; the flat solar heat collector consists of a water collecting and separating pipe, a heat absorbing pipe and a heat absorbing plate; heat accumulation insulation layers 214 are sprayed on the heat absorbing pipe and the back surface of the heat absorbing plate; the curtain wall body 2 is both an insulation heat accumulation decoration plate and a solar heat collector, and can greatly improve the insulation heat accumulation capacity of an exterior wall or the roof and the photothermal conversion efficiency energy of the solar heat collector; and the solar air conditioning equipment pipe system serves obtained heating medium water as an absorbing refrigeration set driving heat source for refrigeration to achieve the purpose of reducing the air conditioning heating energy consumption. The curtain wall is simple in structure, saves the space, is wide in application range, is green, and is low in carbons.

The invention discloses a water LED colored lamp. The water LED colored lamp comprises a spherical shell, wherein the spherical shell comprises an organic glass upper shell and an organic glass lowershell; the organic glass upper shell is in sealing waterproof connection with the organic glass lower shell; a joint of the organic glass upper shell and the organic glass lower shell is equipped witha circular transparent supporting plate; triangular solar cell panels are arranged on the circular transparent supporting plate and at one side of the organic glass upper shell; the three solar cellpanels are arranged in the form of a three-side cone structure; and the joint of the organic glass upper shell and the organic glass lower shell is equipped with a plurality of RGB colored LED lamps to form an LED array. The water LED colored lamp can freely float on water, does not need extract power supply, saves a great deal of electric energy, has the advantages of mounting-free property, no need of waterproof wiring, no electric leakage risk and a high safety coefficient, greatly reduces mounting construction cost, saves time and labor, can be used at any time, can be recycled at any time, is convenient to repair and maintain, is low in repair and maintenance cost, and is high in ornamental value.

The invention relates to a hot melt adhesive used for steel reinforced spirally wound drainage pipes. The hot melt adhesive comprises the following raw materials, in parts by weight: bonding resin masterbatch, polyolefin resin, an ethylene-octene copolymer, ethylene-propylene-diene monomer, polyisobutylene, an antioxidant, a stabilizing agent, hollow glass microbeads and an inorganic foaming agent, wherein the polyisobutene has a number average molecular weight of 200-10000; the stabilizing agent is a calcium-zinc composite stabilizing agent; the bonding resin masterbatch is prepared by the following steps: polyethylene and / or an ethylene copolymer is used as matrix resin, an initiator and an unsaturated polar monomer are added, and melt extrusion is performed to obtain the bonding resin masterbatch; and a total weight of the polyisobutylene, the hollow glass microbeads and the inorganic foaming agent is 5-10% of a total weight of the raw materials of the hot melt adhesive. A lightweight effect is achieved while the comprehensive mechanical properties of the hot melt adhesive are improved. The invention also discloses a preparation method of the hot melt adhesive, and the hot meltadhesive is obtained by performing processing by utilizing a twin-screw machine and performing processing by utilizing a single-screw machine.

The invention discloses a half-rib laminated floor slab with a floor heating pipe groove. The laminated floor slab is provided with an open floor heating pipe groove, on the premise that the thicknessof the original laminated floor slab structure layer is not increased, the reinforced concrete structure layer is poured after the floor heating pipe groove is recessed into the laminated floor slab,an upper opening of the floor heating pipe groove is flush with the surface of the laminated floor slab after pouring of the reinforced concrete structure layer, and the floor heating pipe groove is50 mm deep and 80 mm wide. The laminated floor slab adopts the configuration of floor heating pipe straight grooves and the unidirectional stress reinforced concrete floor slab, and the floor heatingpipe straight grooves are arranged along the floor slabs at intervals; floor heating foldback grooves are arranged at positions where the positive and negative bending moment values of the laminated floor slab are low, and in the positive bending moment position of the laminated floor slab, the floor heating pipe straight grooves are arranged at intervals; and the compressive stress zone of the cross section of the laminated floor slab is divided into relatively independent plate ribs, the plate ribs are cut into half ribs by the floor heating foldback grooves, and reinforcing bars are arranged at the stress loss position of the laminated floor slab formed by the floor heating pipe groove recessed into the laminated floor structural layer. The half-rib laminated floor slab has the advantage that in the existing floor slab construction process, fine stone concrete installation of floor heating pipe is omitted.

The invention discloses a wireless intelligent monitoring system for a residential district, and the system comprises an EIB bus, a power module, a service interface panel input module, a sensor input module, a switching control module, a security system, a monitoring signal system, a building control system, a remote control system, a communication module, an extension I / O module, an upper computer, and a wireless terminal. An EIB power supply is used for supplying for a bus and all function modules and systems in parallel connection with the bus. The data transmission between the upper computer and the communication module is achieved through the Ethernet. The wireless terminal is connected with the communication module through a wireless network, and the wireless terminal can be a cellphone, a computer, and other portable communication equipment. The above function system modules are parallel modules, work independently, do not affect other system modules and can be increased and disassembled, thereby achieving flexible and diversified effects.