146results about How to "Easy construction and maintenance" patented technology

The invention provides a tunneling engineering freeze-proofing structure in a seasonally frozen ground region, relating to a tunneling structure. The freeze-proofing structure is low in cost and convenient in construction and maintenance, and can protect frozen grounds effectively. The freeze-proofing structure is provided with at least 2 arched freeze-proofing tubes and each arched freeze-proofing tube is horizontally arranged in a tunnel lining structure and positioned between a waterproof layer and a secondary lining; one end of each freeze-proofing tube passes through a frozen ground zone at the bottom at the left of the tunnel and then extends downwards, and the other end of the freeze-proofing tube passes through a frozen ground zone at the bottom at the right of the tunnel and then extends downwards; gaps among the freeze-proofing tubes exist in the longitudinal direction of the tunnel and air is sealed in each freeze-proofing tube. The air in the freeze-proofing tubes is utilized to carry out heat exchange so as to transmit heat in surrounding rocks to the secondary lining, thus water in surrounding rocks adjacent to the tunnel can be prevented from being frozen and dangers such as frost heaving and the like of seasonally frozen ground tunneling engineering can be restrained effectively, thereby reaching the purpose of protecting the frozen grounds.

The present invention discloses electromagnetic bird-dispersing equipment on a transmission line by using acousto-optic technology to disperse birds on the transmission line, which comprises an rainproof sealing shell, wherein an acousto-optic warning circuit, an on-off control circuit, a sound-frequency adjusting circuit, an infrared detecting module, an induction powering charging module, a voltage-dividing voltage-stabilizing module and a controller are arranged in the rainproof sealing shell. As the sound-frequency adjusting circuit part is arranged, the preset sound frequency of the total equipment can be adjusted to avoid the adaptability of birds for some fixing sound frequency sound signals. The induction powering charging module gets rid of the trouble for exchanging cells, and electricity is directly obtained on wires. The infrared detecting module can ensure a warning device to work after the birds enter set regions. The present invention has the advantages of compact structure and convenient carrying, and has no obvious effect on konode paths; the equipment is only used for dispersing birds, and the birds can not be hurt, so the safe running of the transmission line is ensured.

The invention discloses a prestress tensioning anchorage device for FRP (Fiber Reinforce Plastic) ribs. The tensioning anchorage device comprises an anchorage device and a tensioning device, wherein the anchorage device comprises a sleeve, a limiting nut and an anchor backing plate; the tensioning device comprises a tensioning rod, a counterforce arm brace and a force application device; the anchor backing plate is connected with the limiting nut, the sleeve is of a hollow structure, the hollow part of the sleeve is a cylinder or a cone which is filled with bonding resin for anchoring FRP ribs, an outer screw thread is arranged on the complete outer surface of the sleeve, the limiting nut is fixed on the sleeve through the outer screw thread, and the anchor backing plate is provided with a hole through which the sleeve can pass freely; and an inner screw thread is arranged on the inner surface of the sleeve, the sleeve is directly connected with the tensioning rod through the inner screw thread, and the part, connected with the sleeve, of the tensioning rod is provided with an outer screw thread or is subjected to tapping treatment, or the sleeve is connected with the tensioning rod through a connecting sleeve and an internal hexagonal stud is pressed and screwed in the inner screw thread position. The prestress tensioning anchorage device for FRP ribs disclosed by the invention can be used for reinforcing existing structures as well as enhancing newly-built structures.

The invention discloses the intelligent storage management and control integration system of a granary. The system comprises a measurement and control terminal and a measurement and control unit connected to the measurement and control terminal through an RS485 bus. The measurement and control unit comprises an automatic control unit, an insect air water detection unit, an intelligent illuminationmeasurement and control unit, a power consumption monitoring unit, a grain storage quantity monitoring unit, an intelligent warehouse patrol unit, a stacking boundary early warning unit, a power utilization safety management and control unit and the like. During application, wiring is convenient, installation, maintenance and capacity expansion are convenient too, control accuracy and the work stability of power equipment can be improved, and the system is a reliable guarantee for implementing intelligent storage.

The invention belongs to the technical field of sewage treatment, and in particular, relates to a rural domestic sewage combined type ecological treatment system and a treatment method, and an application thereof. The rural domestic sewage combined type ecological treatment system includes a sewage collection pipe network, a regulation pool, a high-grade biological contact oxidation pool, a high-efficiency biological filter pool and a constructed wetland which are successively connected, wherein the high-grade biological contact oxidation pool includes a first reaction zone and a second reaction zone, and the first reaction zone and the second reaction zone are connected in a hydraulic drop form; the first reaction zone is connected with the sewage collection pipe network; the second reaction zone is connected with the high-efficiency biological filter pool. By biological carrier high-grade contact oxidation, adsorption effect based on water supply sludge and deep treatment of the constructed wetland, pollutants in the domestic sewage are removed finally, so that the domestic sewage can be subjected to effective purification treatment. The device and the method have wider applicability, can effectively control the pollutants of the rural domestic sewage, and reduce the amount of pollutants entering river channels.

The invention discloses an enclosure protection system which comprises an enclosing and protecting unit and an invading monitoring unit, wherein the enclosing and protecting unit comprises a fence or a barrier which is arranged at the periphery of the area to be protected, and the invading monitoring unit comprises a passive optical fiber which is arranged on the enclosing and protecting unit in the circumference direction and / or is buried under the ground at the outer periphery of the enclosing and protecting unit. According to the design, the passive optical fiber is applied to monitor the outside invasion, and invasion mode and position are recognized to conduct systematic warning and real time alarm. Through the monitoring mode of the passive optical fiber, higher accuracy can be achieved in the large monitoring area or the long liner monitoring area, the optical fiber is excellent in environment resistance, monitoring accuracy is not affected by stormy weather and other severe environments, even cut off by an invader, the system is still capable of continuously providing effective alarm ability and will not fall into a paralyzed state, an external power, a repeater, a signal processor and other devices are not needed, and construction and maintenance are convenient and fast.

The invention belongs to the field of fine chemical coatings, and discloses a preparation method of a fouling resistant coating for a highway barrier. The method comprises the following steps of: firstly preparing a phosphate-group-containing hydroxyl acrylic acid water dispersion, then preparing nanometer TiO2 dispersion slurry which is stable in performance, and finally preparing an ingredient A by dispersing and grinding the nanometer TiO2 dispersion slurry, the phosphate-group-containing hydroxyl acrylic acid water dispersion, an ultraviolet absorber, a solvent, a pigment filler and other auxiliaries in proportions. The coating for the highway barrier prepared from the ingredient A and an aliphatic isocyanate curing agent (ingredient B) can be easily coated thick; the coated film has the characteristics of good weather resistance, strong fouling resistance, and excellent corrosion resistance; the shortcomings that coating equipment needs to be fixed, a barrier plate needs to be repaired, the field maintenance is difficult, and the decoration performance is poor in the traditional coating construction for the highway are avoided; and therefore the coating can be widely applied to the highway barrier facilities of barrier plates, upright posts, bolts and the like, and also can be widely applied to the protection of large-sized construction machinery and other outdoor steel structures.

The invention provides a climbing robot of a high-voltage line tower. A left guide rail and a right guide rail respectively penetrate in guide rail holes which run from top to bottom on the left side and the right side of a rectangular enclosure; guide rail teeth are arranged on the inner sides of the guide rails and are meshed with a main gear; a main gear shaft is fixed on the enclosure and is driven by a stepping motor; two rotary claw hooks capable of rotating horizontally are respectively arranged at the lower end of the left guide rail and the lower end of the right guide rail; and a suspension support is arranged on the enclosure. The climbing robot is specially designed for characteristics of the electric high-voltage line tower; transverse angle bars on the high-voltage line tower are sequentially grasped by the climbing robot through the claw hooks, which can rotate horizontally, at the upper ends of the left guide rail and the right guide rail; and the main gear can be driven by the stepping motor to sequentially rotate clockwise and anticlockwise, so that the climbing robot can climb upwards. According to a control procedure, the climbing robot is controlled in a simple and reliable sequence, and the safety is high. The mechanical structure of the climbing robot is simple; and the climbing robot is convenient to carry, and brings great convenience to construction and repair of the high-voltage line tower.

The invention discloses a data-analysis-based photovoltaic power generation monitoring system and method. With a wireless transmission technology, sampling is carried out on illumination intensity and temperature data in areas with same meteorological and geographical environments, the sampling data are transmitted to a data analysis system, and the data analysis system predicts a daily electric quantity limit value of each photovoltaic grid-connected point according to the sampling data and photovoltaic cell panel parameters; the daily electric quantity limit value obtained by the analysis and calculation is compared with sampling data of an electricity usage information acquisition system; and when the generating capacity becomes abnormal, a master station computer carries out early warning to warn the marketing inspections staff to carry out electricity stealing event supervision. Therefore, the generating capacities of photovoltaic power stations in a same area can be predicted accurately and the generating capacity abnormality determination accuracy is high; an abnormal situation can be warned early; and thus the marketing staff can identify a suspected electricity stealing user conveniently. And thus the daily working efficiency is improved.

The invention discloses a filter, which comprises a drain plate, wherein the drain plate divides a filter cylinder into two parts of which the upper part is high and the lower part is low; the middle part of the upper part cylinder is provided with a column type filter core, the bottom end of the column type filter core is connected with the drain plate, and the top end of the column type filter core is connected with a press plate by a filter core plug; and the bottom surface of the lower part cylinder is connected with support legs by a support plate. The filter is characterized in that both sides of the lower part of the upper part cylinder are provided with a water inlet respectively, and a water outlet is arranged below the support plate of the lower part cylinder; and the edge of the upper part of the upper part cylinder is provided with a convex edge connected with an upper cover plate with vent holes through a hanging rod mechanism, and the upper cover plate is connected with the edge of the upper part of the upper part cylinder and tightly pressed against the press plate. The filter has the advantages of long service life of the filter core, high working efficiency of the filter and convenient replacement of the filter core in maintenance.

The invention relates to a non-keel dry-hanging fastener which belongs to the technical field of parts or structures especially used as fixing material during decorating walls of buildings. The non-keel dry-hanging fastener solves the problem that thermal-insulation decoration plates have no keel dry-hangings and comprises a clip and a fastening piece, wherein, the clip is an expansion bolt, and the center of the threaded rod of the expansion bolt is provided with an inner-threaded round hole; the fastening piece is connected with the threaded rod of the expansion bolt by a screw. The fastening piece consists of a top plate and a base plate which are respectively provided with a round hole. The fastener provided by the invention is made of stainless steel or metal, the surface of which is treated to resist against corrosion, and realizes that thermal-insulation decoration plates have no keel dry-hangings, so that thermal-insulation decoration plates can be perfectly fixed on walls. The fastener is applicable to various wall materials, such as concrete, solid and hollow walls and can make constructions and maintenance convenient and quick. The fastener has high loading capacity, high bearing pressure and good tension-resistance performance; besides, the fastener can prevent the impact damage, reduce the loading of a whole building, provide 3-5 cm horizontal adjustment differences for the distorted surfaces of walls, and provide flat surfaces for wall decoration.

The invention discloses a snow-melting and deicing coating layer for a pavement and a preparation method of the snow-melting and deicing coating layer, and belongs to the technical field of functional coating layers. The snow-melting and deicing coating layer for the pavement is obtained by mixing components A, B and C, spraying the mixture to the pavement or coating the pavement with the mixture, and curing the mixture; the mass ratio of the components A, B and C is 100: (20 to 60): (70 to 150). The component A is prepared from epoxy resin, an elastic modifier, an epoxy active diluent, a snow melting agent and a dispersing agent; the component B is prepared from an epoxy curing agent, a curing promoter, a coupling agent and a pigment; the component C is prepared from quartz powder, magnet powder and crystal whiskers. The snow-melting and deicing coating layer realizes efficient snow melting and deicing under the synergistic action of the snow melting agent and microwave radiation heating. Compared with the prior art, the snow-melting and deicing coating layer for the pavement has the advantages of low energy consumption, convenience for construction and maintenance, low cost, low technical requirement, high snow melting and deicing efficiency, obvious environmental protection benefit and the like, and has a wide application prospect.

The invention relates to the technical field of rainwater collection and purification of sponge cities, in particular to an intelligent biological retention tank and a construction method thereof. Theretention tank makes up for the shortage of the existing facilities to the back-use and self-control of rain water. According to the technical scheme: the two sides of the detention tank are providedwith an inflow notch and a perforated spray irrigation pipe along the stone, the retention groove comprises a surface water storage layer, a filling layer, a middle sand permeable layer and a water storage module layer from top to bottom, and also comprises an automatic control system, a back-use water pump and an inspection well are arranged at the bottom of the water storage module layer, a recharge water pipeline is arranged in the inspection well, the recharge water cloth pipeline is connected with the back-use water pump, the inspection well extends out of the filling layer, the surfacelayer of the filling layer is provided with a soil moisture sensor, an automatic control system is connected with the soil moisture sensor and the back-use water pump, the recharge water pipeline extends out of the filling layer and is connected with the perforated spray irrigation pipe, an overflow well is arranged in the filling layer, and the wellhead of the overflow well is higher than the surface of the filling layer. The retention tank is constructed by using a special method.

The invention discloses a floating breakwater unit body with a frame provided with thin films with holes. The floating breakwater unit body comprises the cuboid frame formed by twelve edges, and the horizontal top thin film with the holes is laid on the upper end face of the cuboid frame, wherein the top thin film with the holes is connected with the edges. The multiple layers of horizontal lower middle loose thin films with the holes are arranged in the height direction from the upper end face to the lower end face at equal intervals, wherein the horizontal lower middle loose thin films with the holes are connected with the front end and the rear end of the cuboid frame, and the length of the horizontal lower middle loose thin films with the holes is larger than that of the cuboid frame. The perpendicular thin films with the holes are laid on the front end face and the rear end face of the cuboid frame respectively, wherein the perpendicular thin films with the holes connected with the edges. Retaining rings used for splicing and connecting moorings are further arranged at the eight corners of the cuboid frame structure. The floating breakwater unit body is good in wave eliminating effect, small in structure restoring force, capable of well shielding long waves and short waves, convenient to construct and maintain and suitable for water areas which have different water depths and are not suitable for the construction of traditional form breakwaters.

The invention belongs to the field of sewage treatment, and particularly relates to an immobilized microorganism-plant combined ecological treatment system and application. The system comprises a slow flow settling region and at least one purification region in sequential arrangement, wherein the purification region consists of a broad-crested weir and an immobilized microorganism packing pool; the front part of the broad-crested weir is connected with the slow flow settling region; the back end of the broad-crested weir is connected with the immobilized microorganism packing pool; the width of the slow flow settling region is identical to that of the bottom surface of a riverway; the bottom surface of the slow flow settling region is lower than the river bottom; the broad-crested weir is higher than the river bottom; the bottom surface of the immobilized microorganism packing pool is lower than the river bottom; three layers of packing of immobilized microorganisms are arranged in the immobilized microorganism packing pool; the packing sequentially includes a gradation cobblestone layer, a water supply sludge particle layer and a submerged plant planting region from bottom to top; rich nutritive salt and inorganic salt such as total phosphorus and ammonia nitrogen in a black and odorous water body can be continuously and efficiently removed; various contaminants can be treated; high applicability and continuity are realized; the water pollution treatment cost is reduced.

The invention provides a trace element tracer borehole injection device. The trace element tracer borehole injection device comprises a control module, a high pressure pump, a drive motor, a pressure meter, an overload protection module, a six way valve, a valve, a piston type energy accumulator and a check valve, and further comprises a stirring device, wherein a stirring motor is connected with the stirring device through a stirring shaft, stirring blades are arranged on two sides of the stirring shaft, the stirring blades rotate clockwise along the stirring shaft, and the control module controls running of the stirring motor. The trace element tracer borehole injection device is simple in structure, convenient to operate, convenient to construct and maintain, suitable for injections of trace element tracer in a water injection well, a steam injection well and a gas injection well, short in construction time and high in monitoring success rate, guarantees that trace element tracer is completely dissolved and injected into a stratum on site, can prevent fluid channeling in a well shaft during the layered injection process, saves manpower and material resources, reduces production cost, and improves work efficiency.

The invention discloses a low-carbon and energy-conservation type settling and adjusting tank which comprises a primary settling tank and an adjusting tank. The primary settling tank and the adjusting tank are arranged in parallel, the primary settling tank comprises a settling tank body and a water collecting tank, a water level measuring and controlling device is arranged in the water collecting tank, the settling tank body is connected with a water inlet, the water collecting tank is provided with a water outlet and an overflow opening, the water outlet is used for being connected with a biological processing system, the overflow opening is connected with the adjusting tank, a pipe bottom elevation of the overflow opening is the same as the pipe top elevation of the water outlet, a lifting pump is arranged in the adjusting tank, and the water level measuring and controlling device is connected with the lifting pump. The low-carbon and energy-conservation type precipitating and adjusting tank disclosed by the invention is suitable for pretreatment of small and micro sewage treatment facilities of independent industrial and mining enterprises, expressway service stations and the like; as the primary settling tank and the adjusting tank are jointly constructed, the settling and adjusting tank has a simple structure and easiness in water level control; sewage can exceed the adjusting tank according to the average flow to directly enter a subsequent biochemical treatment system, and a part exceeding the average flow is dammed to the adjusting tank; thus, the water volume for the adjusting tank to lift is reduced, and operation energy consumption is reduced.

The invention relates to a heating floor formed by connecting a metal heat-transfer element and a heating element at low thermal resistance. The heating floor comprises a floor, a metal heat-conducting plate connected with the lower surface of the floor and a heating element connected with the metal heat-conducting plate at low thermal resistance. The heating floor is characterized in that the metal heat-conducting plate is connected with the floor by one of the following three manners or the combination of the three manners at low thermal resistance: (1) connecting by using a nail connecting member; (2) bonding; and (3) wrapping joining of the metal heat-conducting plate. The invention has the advantages that the metal heat-conducting plate is connected with the floor by using a nail-shaped connecting member, bonding and wrapping joining, the thermal resistance between the floor and the metal heat-conducting plate can be reduced, and the strength of the floor can be enhanced. A heating pipe can greatly increase the heat-transfer efficiency of the metal heat-conducting plate, increase the heat-transfer distance, and reduce differences in temperature and the quantity of the heating element. The 5-10 DEG C heat-transfer temperature drop from the heating element to the floor can be reduced, and the thermal resistance of a dry heating floor can be reduced to an ideal degree. Five embodiments are given by combining figures.

The embodiment of the invention discloses a green roof system applied to sponge city construction. The green roof system comprises a plurality of modular containers, a porous sponge culture medium, afilter screen and a plurality of water absorbing cotton slivers; the modular containers are placed on a roof; the inside of each modular container is hollowed to form a planting space; the top of eachmodular container is provided with an opening; the filter screen is used for covering the bottom surface of the inner side of each modular container; the porous sponge culture medium is used for covering the upper surface of the filter screen; the bottom of each modular container is uniformly provided with a plurality of protruding parts which extend downwards; each protruding part of which the inside is hollow communicates with the corresponding planting space; one end of each water absorbing cotton sliver is arranged inside the corresponding protruding part; and the other end of each waterabsorbing cotton sliver extends out of the corresponding filter hole of the filter screen and makes contact with the porous sponge culture medium. The green roof system applied to the sponge city construction, disclosed by the embodiment of the invention is reasonable in structural design, convenient to install, simple to replace after being damaged and low in requirement on load of the roof.

The invention provides a swivel bridge with a vibration reducing and isolating function. Pile foundations, piers and a bridge body are included. An upper bearing platform and a lower bearing platformare arranged between each pile foundation and the corresponding pier, wherein the center of the upper bearing platform and the center of the lower bearing platform are connected through a spherical hinge, the part between the upper bearing platform and the lower bearing platform is provided with a plurality of vibration reducing structure pieces, the multiple vibration reducing structure pieces are located on the outer side of the spherical hinge and arranged at equal intervals in the circumferential direction of the spherical hinge, a plurality of supporting legs are arranged at the bottom ofthe upper bearing platform in the circumferential direction of the upper bearing platform, and the bottoms of the supporting legs are detachably connected with the lower bearing platform through rubber vibration isolating supports. According to the swivel bridge, traditional sealing compound concrete construction is eliminated, the rubber vibration isolating supports are additionally arranged below traditional swivel bridge supporting legs, equivalently, the vibration isolating layers are formed between the bridge structure and the lower bearing platforms, and when the great earthquake happens, a large amount of earthquake energy can be offset through the rubber vibration isolating supports, meanwhile, the vibration reducing structure pieces are additionally arranged between the upper bearing platforms and the lower bearing platforms, accordingly, a large amount of earthquake energy entering the structure is consumed, accordingly, earthquake response of the whole bridge structure is greatly reduced, and the shock resistance of the structure is greatly improved.

The invention discloses an initial rainwater discarding well device with a hydraulic automatic tipping bucket. The initial rainwater discarding well device comprises a water inlet pipe, the hydraulicautomatic tipping bucket connected with a rotary shaft and a discarding pipe, wherein both the water inlet pipe and a water outlet pipe are inserted into a well body, the well body is connected with abase, a partition wall is arranged in the middle of the well to separate a discarding well and a water outlet well, the hydraulic automatic tipping bucket is located below the front of a water outletof the water inlet pipe, rainwater enters the hydraulic automatic tipping bucket, then flows to the discarding well and then is drained away, and when rainfall is large, the hydraulic automatic tipping bucket turns over to guide rainwater to flow to the water outlet well and rotates around the rotary shaft, and the rotary shaft is fixed to the partition wall in the middle of the well. The initialrainwater discarding well device is suitable for discarding of initial rainwater of buildings and housing estates, has the advantages of automatically operating, saving construction investment and belong low in operating cost, good in hydraulic condition and convenient to construct and maintain and can automatically complete automatic shunting of dirtier initial falling rainwater and cleaner later rainwater.

The invention discloses a track deformation adjusting device and magnetic levitation railway tracks applying the same. The track deformation adjusting device comprises a track plate base, a track plate, a boss and an adjusting unit module. The track plate is arranged on the track plate base and provided with track bearing ditches which are used for mounting the steel tracks and fastener systems. The magnetic levitation railway tracks comprise a first side edge retaining wall and a second side edge retaining wall which are fixed to the railway track surface of a bearing beam, and the first sideedge retaining wall, the second side edge retaining wall and the railway track surface of the bearing beam form a U-shaped structure. According to the track deformation adjusting device and the magnetic levitation railway tracks applying the same, the track journey and the track gauge of the steel tracks at the laying stage are adjusted, the tracks are corrected during subgrade settlement at theoperating stage, and thus the laying construction cost and the later-period operating managing cost of the steel tracks are reduced; and noise can be reduced, escape tunnels and maintenance tunnels can be additionally formed, a magnetic levitation railway track traffic system is improved, and the safety guarantee capacity and the maintenance efficiency are improved.

The invention discloses a metal sand damper which comprises three stacked steel plates, wherein a rubber sheet is adhered between the adjacent steel plates respectively; a through hole is formed in the three steel plates; metal sand is filled in the through hole; cover plates are arranged at two ends of the through hole; padding plates are arranged inside the cover plates; belleville springs are arranged between the padding plates and the cover plates; and the three steel plates are placed between two clamping plates together. The metal sand damper provided by the invention generates a damping force by applying a three-directional pressure to the metal sand when moving along with the shearing deformation of the rubber, so as to consume vibration energy in the structure. The metal sand damper has the advantages of long service life, large and reliable supplied damping force, simple structure, convenience in manufacturing, low cost and the like.

The invention belongs to the technical field of power insulation equipment, and particularly relates to a hard composite insulator and a preparation method thereof. The hard composite insulator comprises an insulating core rod, hardware fittings, a hard sheath and a hard umbrella skirt. The hardware fittings are arranged at the two ends of the insulating core rod; the hard sheath covers the outersurface of the insulating core rod and extends to the surface of the fitting to form sealing. The hard umbrella skirt is arranged on the hard sheath. The hard umbrella skirt comprises more than one large umbrella-shaped bulge which is coaxially arranged with the insulating core rod. The preparation raw materials of the hard umbrella skirt and the hard sheath are the same, and at least comprise silicone rubber and / or plastic. According to the composite insulator, the bird pecking damage resistance, the sand wind resistance, the external force damage resistance and the aging resistance of the composite insulator are improved, the probability that the insulating core rod is exposed in the atmospheric environment is further reduced, the insulating core rod cannot be brittle failure due to external corrosion, and brittle failure accidents can be prevented in the using process of the composite insulator.

The invention discloses a prefabricated photovoltaic road assembling block. The prefabricated photovoltaic road assembling block is laid on a roadbed, and comprises a concrete bottom plate (6), a waterproof sealing layer (5), a photovoltaic assembly (1) and a frame (2); the concrete bottom plate (6) is disposed below the photovoltaic assembly (1), and the frame (2) is arranged at the peripheral side of the concrete bottom plate (6) and the peripheral side of the photovoltaic assembly (1) which are separated by transverse plates (9) on the frame (2); and sealing members (7) are arranged at theperipheral side of the photovoltaic assembly (1) and the frame (2), and the waterproof sealing layer (5) is arranged at the upper surface of the concrete bottom plate (6). The prefabricated photovoltaic road assembling block has the beneficial effects that the modular paving requirements can be realized under good roadbed conditions, the advantages of extremely short construction period, controllable quality, convenient construction and maintenance, high strength, skid resistance, water resistance, anti-temperature deformation and superior durability are achieved, and the service life of photovoltaic roads can be effectively prolonged and the economy efficiency of the photovoltaic roads can be effectively improved.

The present invention belongs to the field of railroad system, in the concrete it relates to a kind of fastener for urban railroad traffic yard line (containing column-type and wall-type inspection pit line) rail positioning connection. Said fastener is characterized by that on the surface of iron soleplate two groups of iron seats are set so as to implement positioning and fixation of T-type screw bolt. At the same time the related structures of iron soleplate and raid gauge plate are optimized, and its rail gauge regulation quantity is + 8mm-14mm, and the regulation level difference is 1mm. Said fastener can be conveniently and reliably mounted, and its cost can be reduced.

The invention discloses a waterproof and antibacterial PVC (polyvinyl chloride) cable material formula. The formula comprises raw materials in parts by weight as follows: 30-40 parts of PVC resin, 10-15 parts of EPDM (ethylene-propylene-diene monomer) rubber, 5-10 parts of chloroprene rubber, 2-5 parts of nano barium sulfate, 1-5 parts of nano titanium dioxide, 2-6 parts of carbon nanotubes, 5-10 parts of expanded perlite, 3-8 parts of inorganic silver-ion-containing silicate, 2-3 parts of an antioxidant, 1-4 parts of sodium hexametaphosphate, 2-5 parts of microcrystalline cellulose, 1-2 parts of silver-loaded zeolite, 2-5 parts of elastic fiber, 4-10 parts of aluminum oxide, 5-10 parts of magnesium hydroxide, 1-3 parts of an anti-aging agent, 3-6 parts of paraffin, 3-5 parts of a silane coupling agent and 1-4 parts of a plasticizer. PVC resin, EPDM rubber and chloroprene rubber are subjected to blending crosslinking modification, so that the cable material has characteristics of plastic and rubber, has high strength, high elongation, long service life, light weight, good bonding property and excellent waterproof performance, has aging resistance and flame retardance and is convenient to construct and maintain. Raw materials are non-toxic and harmless, environment-friendly and harmless to body health.

The invention relates to a water through type heating and cooling floor, which fundamentally solves the problems of poor foot comfort, complicated structure, inconvenient maintenance and low heat utilization rate of the existing air-condition type floor. The heating and cooling floor comprises an extruded sheet paved on the ground as a heat insulating layer. The heating and cooling floor has the technical points that the upper surface of the extruded sheet is provided with multiple concave type through slots which are mutually parallel; a modified PVC (Polyvinyl Chloride) water through square pipe is arranged in each concave type through slot; the lower surface of the modified PVC water through square pipe tightly contacts with the bottom surfaces of the concave type through slots on the extruded sheet; the upper surface of the extruded sheet is covered with a solid wood composite floor; the lower surface of the solid wood composite floor is provided with the same amount of the concave type through slots corresponding to the concave type through slots on the extruded sheet; the upper surface of the modified PVC water through square pipe tightly contacts with the bottom surfaces of the concave type through slots on the solid wood composite floor; and the two ends of each modified PVC water through square pipe are respectively connected to a water segregator after the heat capacity welding is carried out. The water through type heating and cooling floor has the advantages of warmness in winter and coolness in summer, strong decorative effect and comfortable foot feel, and is suitable for various residence and office spaces.

The invention discloses a drying device applied to producing high-breathability paper products in the papermaking industry. The drying device comprises a circulating fan, a heating device and a drying room which are sequentially connected through a circulating air channel, a cellular circular mesh rotation barrel is arranged inside the drying room, and an air outlet of the cellular circular mesh rotation barrel is connected with an air inlet of the circulating fan through an air sucking drum. A moisture removal air channel which is communicated with the outside and is provided with a control damper is arranged on the circulating air channel between the circulating fan and a combustor. The cellular circular mesh rotation barrel is arranged inside the drying room in the modes that the cellular circular mesh rotation barrel shares the same axis with the air sucking drum and is communicated with the inner cavity of the air sucking drum. The two ends of the cellular circular mesh rotation barrel are combined with a drying room front wallboard and a drying room rear wallboard respectively through connecting pieces. A transmission shaft of the cellular circular mesh rotation barrel is combined with a motor through a speed reducing mechanism. An air inlet of the drying room is formed in the side wall of the drying room which is parallel to the axis of the cellular circular mesh rotation barrel.

A heat exchange, which includes a casing having a cylinder; two connectors respectively attached to one end of the cylinder through the small opening; two convex heads respectively connected through the opening end to the large opening of a connector; a core disposed inside the casing; and two heat transfer medium passages. In this way, the space at the ends of the casing of the heat exchanger may be enlarged, thereby providing a space large enough to accommodate the construction personal and better working environment for two-side welding and future maintenance and wider selection range of material of the casing of the heat exchanger; a buffer area is provided for the flow of the heat transfer medium, and the auxiliary like baffles may be mounted inside the convex heads as required to further improve the heat exchange efficiency and reduce the cost.