201results about How to "Good insulation performance" patented technology

The invention discloses a low-temperature-resistant heat-insulating composite material and a preparation method thereof, and relates to the technical field of composite materials, and the material comprises an outer protective layer, a middle reinforcing layer and an inner heat insulating layer. The inner heat insulation layer is composed of aerogel, polytetrafluoroethylene micro powder and the like, and good heat insulation performance is provided. The middle reinforcing layer contains ethylene-propylene rubber and the like, so that the material is endowed with elasticity, mechanical strength and flame retardance. And the outer protective layer is made of PVC resin and the like, so that the overall strength and wear resistance are enhanced. The low-temperature-resistant anti-cracking additive is prepared from polyimide resin and the like, so that the anti-cracking performance is improved. The modified filler is prepared through a specific method, and the material performance is improved. During preparation, all the layers are prepared respectively and then subjected to hot-pressing compounding. The internal mixer control system guarantees preparation parameter control of the middle enhancement layer, and a PID control algorithm is adopted. The composite material has the advantages of reasonable structural design, synergistic effect of all layers, mature preparation method and process, excellent performances of low temperature resistance, heat insulation, cracking resistance and the like, and is suitable for being applied to various low-temperature environments.

The invention discloses a heat-insulating ceramic fiber board and a preparation method thereof. The heat-insulating ceramic fiber board comprises the following raw materials in parts by mass: 96-114 parts of aluminum silicate fiber mixed cotton, 4-6 parts of zirconium oxide fiber, 9-12 parts of alkaline silica sol, 12-15 parts of a water-based resin dispersant, 8-10 parts of aluminum oxide fine powder and 5-8 parts of high-temperature ceramsite sand. Wherein the aluminum silicate fiber mixed cotton is a mixture composed of aluminum silicate fiber raw cotton, aluminum silicate fiber broken cotton and aluminum silicate short fibers. The heat insulation ceramic fiber board is high in strength, long in service life, low in heat conductivity coefficient and good in heat insulation performance.

The invention provides a flexible nano thermal insulation material and a preparation method and application thereof, and the preparation method of the flexible nano thermal insulation material comprises the following steps: mixing low-heat-conductivity-coefficient powder, a fibrosis adhesive and an optional additive, carrying out ball milling to obtain floccule, and rolling the floccule into a film-shaped flexible nano thermal insulation material. According to the invention, the low-thermal-conductivity powder is cross-linked, fixed and rolled to form the flexible film by using the fibril formed by the fibrillating adhesive, so that the pore structure of the low-thermal-conductivity powder is maintained without introducing the adhesive with high thermal conductivity for forming; therefore, the low heat conductivity coefficient of the powder is kept, and meanwhile, the powder has good processing formability. The prepared flexible nano heat insulation material has excellent flexibility, heat insulation performance and certain tensile and compression performance, and can be widely applied to the fields of aerospace, constructional engineering, shipbuilding, automobile manufacturing and the like.

The invention relates to the technical field of ceramic silica gel foam aerogel preparation, and discloses a ceramic silica gel foam aerogel sheet and a preparation method thereof. Comprising the following raw materials in parts by weight: 10-30 parts of aerogel powder, 10-30 parts of glass powder, 10-30 parts of one or a mixture of calcium silicate / mica powder / kaolin / wollastonite, 20-30 parts of aluminum hydroxide, 30-50 parts of hydroxyl silicone oil, 100 parts of organosiloxane, 0.1-0.5 part of a catalyst, 20-30 parts of hydrogen-containing silicone oil and 1-5 parts of color paste, the aerogel is silicon dioxide aerogel powder, the density is 1.5 MG / ML, the pore diameter is 10-50 NM, and the pore diameter is 10-50 NM. The glass powder is low-melting-point ceramic powder, and the particle size of the glass powder is 1-20 UM. The preparation method is simple, the process is easy to control, and the quality is stable. The prepared silica gel foam aerogel internally contains a uniform closed pore structure, so that the thermal insulation and sound insulation effects are greatly improved; the rebound resilience is good, and the gap filling effect of a current aerogel product is improved.

The invention discloses a fiber / powder composite VIP core material based on a DLP technology and a preparation method and application thereof, and belongs to the technical field of vacuum insulation panel manufacturing. The preparation method of the core material comprises the following steps: (1) uniformly stirring and mixing glass fibers, gas-phase SiO2 powder, light-cured resin, a dispersing agent and a photoinitiator to obtain a printing material; (2) printing a fiber / powder composite VIP core material by adopting the printing material in the step (1) according to a three-dimensional model of a preset structure, drying and cooling; and (3) putting the core material in the step (2) into a barrier film, adding a getter, and packaging to obtain the product. The method has the beneficial effects that solid-phase heat conduction can be effectively reduced through elaborately optimized material composition and structural design, particularly fiber directional layered arrangement which is beneficial to realization based on a DLP printer, and fiber pores can be further filled after gas-phase SiO2 is compounded. The heat conductivity of the VIP can be reduced to 0.0025-0.0035 W / (m.K) by combining the synergistic effect of all the components, and is remarkably improved compared with that of traditional VIP.

The invention discloses a preparation method of a large-area decoupling type fiber grating sensor based on an island bridge structure, and the method comprises the steps: firstly carrying out the peripheral pre-stretching of an elastic substrate, and then bonding a plurality of carbon fiber composite sheets which are arranged in a matrix manner on the elastic substrate in a pre-stretching state, a fiber grating and a fiber grating wrapped by glass fiber are respectively bonded and fixed on the two rows of fiber positioning grooves of each row of carbon fiber clad sheets, each fiber grating is provided with a grating point in the groove of each carbon fiber clad sheet, and each groove of each carbon fiber clad sheet is filled and cured; finally, after the elastic substrate is pre-stretched and released, the top surface of the elastic substrate is covered with an elastic top sealing layer, and therefore the large-area decoupling type fiber grating sensor is formed. The large-area decoupling fiber grating sensor prepared by the invention can still obtain a high-precision measurement result when facing high mechanical stress and dynamic deformation.

The invention discloses a preparation method of foam composite self-floating sponge and photo-thermal interface evaporation application of the foam composite self-floating sponge. In the foaming process of preparing the porous sponge, the step of adding hydrophobic foam particles in situ is introduced, and the composite material which can rapidly absorb and guide water and has the self-floating characteristic is prepared through a one-step method. The composite material disclosed by the invention can simultaneously meet the dual functions of water absorption, water diversion and self-floating. When the composite material is used as a substrate material of a photo-thermal interface evaporation system, a spontaneous, continuous and stable outdoor evaporation process can be ensured. Under the condition of simulating 1 solar radiation (1000 W / m < 2 >), the technology realizes the water evaporation rate up to 1.86 kg.m <-2 >. H <-1 >; and under natural sunlight irradiation (about 435 W / m < 2 >), the average sewage evaporation rate reaches 1.70 kg.m <-2 >. H <-1 >, and the daily average sewage evaporation capacity is 12.0-14.0 kg.m <-2 >.

The invention provides a special recombinant material applied to the fields of liquefied petroleum gas (LPG), liquefied ethylene gas (LEG), liquefied natural gas (LNG) A / B / C type independent liquid cargo tanks and part of low-temperature pipeline supports and a manufacturing method of the special recombinant material. The invention provides a manufacturing method of a special recombined material for the ultralow-temperature field. The manufacturing method comprises the steps of selection of a veneer tree species and an adhesive, determination of the thickness of a veneer and the adhesive applying amount, and rapid gum dipping and hot pressing of a thick veneer. According to the manufacturing method provided by the invention, the vacuum high-pressure impregnation adhesive is adopted, so that the effects of high impregnation efficiency, large impregnation amount and uniform resin distribution can be realized; and a temperature sensor and a pressure sensor are installed, so that early warning can be carried out in advance when abnormity occurs. The special recombinant material has excellent mechanical properties such as water resistance, compression resistance, bending resistance and shearing resistance at room temperature and ultralow temperature (-163 DEG C). The special recombinant material provided by the invention can be used for liquid cargo hold pressure-bearing wood of LPG, LEG and LNG ships and part of low-temperature pipeline brackets.

The invention belongs to the technical field of polyurethane aerogel materials, and relates to a preparation method and application of bio-based waterborne polyurethane aerogel, the preparation method comprises the following steps: carrying out Aza-Michael addition reaction on amination modified sodium alginate and polyethylene glycol methacrylate terminated waterborne polyurethane, and freeze-drying to obtain the bio-based waterborne polyurethane aerogel, the prepared bio-based waterborne polyurethane aerogel can be used for a thermal insulation material, an oil stain cleaning material or a biomedical bracket. Compared with the prior art, the preparation method has the advantages that the problem of poor compatibility of polysaccharide and polyurethane in a traditional mixing method is solved, the aerogel is endowed with good biodegradability, mechanical property, adiabaticity, flame retardance and self-repairing property, and a new material choice is expected to be provided for solving the problems in the fields of energy, environment, medical treatment and the like.

The invention discloses a high-strength ceramic insulator processing method, which is characterized in that diatomite and silicon powder are added into a blank of an insulator, the diatomite has good adiabaticity, the service life of the ceramic insulator can be prolonged, the performance of the ceramic insulator can be improved, and meanwhile, pores of the diatomite can be filled with silicon powder particles so as to reduce the porosity of the diatomite; on the other hand, the surface of the green body is subjected to ozone treatment during glazing, so that a glassy-state-like # imgabs0 # film and more hydrophilic groups # imgabs1 # can be generated on the surface of the green body to facilitate glazing, the bonding strength of the glaze and the green body is improved, and the strength of the insulator is improved; meanwhile, soluble impurities in kieselguhr in the glaze are removed through weak acidity of boric acid, boric oxide is generated through thermal decomposition reaction of boric acid, and boric oxide can react with aluminum oxide in the glaze to generate aluminum borate whiskers in the firing process after a green body is glazed; the aluminum borate whisker can be used as a reinforcing agent in the firing process of the insulator, so that the strength of the insulator is further improved.

The present invention discloses a wear-resistant liquid-cooled cable with an ultra-large current load for new energy, and belongs to the technical field of liquid-cooled cable processing. The present invention is used to solve the technical problem in the prior art that the wear resistance of liquid-cooled cables and the heat dissipation efficiency in high-temperature environments need to be further improved. A wear-resistant liquid-cooled cable with an ultra-large current load for new energy includes a plurality of conductors, and the exteriors of the plurality of conductors are sequentially provided with an insulating layer, a shielding layer, and an outer sheath layer; a heat exchange layer composed of a plurality of heat exchange tubes is provided between the shielding layer and the outer sheath layer, and the plurality of heat exchange tubes are all arranged in a spiral shape. The present invention improves the heat exchange performance inside the cable by preparing the insulating layer using a thermally conductive filler, and improves the thermal insulation and wear resistance of the cable outer sheath layer by preparing the cable outer sheath layer by synthesizing a composite polyolefin, thereby obtaining a liquid-cooled cable with high heat exchange efficiency inside, wear resistance outside, and suitable for high temperatures.

The invention discloses a fireproof flame-retardant cable and a preparation method thereof, and relates to the technical field of cables. A modified expanded perlite composite material is combined with 4, 5-dihydroxy-2-hexenoic acid and boric acid, boron doping is achieved, a nitrogen-boron synergistic flame-retardant system is formed, then pre-crosslinking with butadiene rubber and double-bond-containing allyl modified phenolic resin is carried out through double bonds, the mechanical property of the cable is optimized, in addition, due to construction of the pre-crosslinking system, the flame-retardant performance of the cable is improved, and the service life of the cable is prolonged. The boron-doped composite material, the allyl modified phenolic resin and other substances with the flame-retardant effect are inserted into the three-dimensional network cross-linked structure in a penetrating manner, so that the flame-retardant stability and dispersion stability of the material are improved, the compactness of the flame-retardant fireproof outer sleeve layer is further improved, the flame-retardant fireproof outer sleeve layer has good mechanical properties and fire retardance and is not prone to cracking, and meanwhile, the flame-retardant fireproof outer sleeve layer has the good flame-retardant effect. The modified expanded perlite composite material forms a heat insulation network by means of a pre-crosslinking structure, so that the prepared sheath mixture has excellent heat insulation and heat resistance, and the fireproof performance of the cable is improved.

The invention relates to a variable-density high-vacuum multi-layer heat insulation structure and an optimization method thereof, and the optimization method comprises the following steps: determining design parameters and performance indexes of the variable-density high-vacuum multi-layer heat insulation structure, and carrying out the functional expression of each performance index based on the design parameters, so as to obtain a simulation function of each performance index; and based on the simulation function of each performance index, establishing an optimal arrangement problem of the variable-density high-vacuum multi-layer heat insulation structure, and solving the optimal arrangement problem by adopting a genetic algorithm to realize optimization of the variable-density high-vacuum multi-layer heat insulation structure. When the genetic algorithm is adopted to solve the optimal arrangement problem, population individuals are generated based on the number of heat insulation layers among all reflecting screens of the variable-density high-vacuum multi-layer heat insulation structure, and a heat flow density function of the variable-density high-vacuum multi-layer heat insulation structure serves as a fitness function. Compared with the prior art, the method has the advantages of effectively improving the heat insulation performance, being high in efficiency and the like.

The invention relates to the technical field of fireproof roller shutters, in particular to a fireproof roller shutter with basalt fiber cloth, which comprises fireproof roller shutter cloth, the fireproof roller shutter cloth is arranged in multiple layers, the thickness of the fireproof roller shutter cloth is less than or equal to 0.5 mm, the fireproof roller shutter cloth comprises a fireproof heat insulation layer, and the fireproof heat insulation layer is formed by interweaving and blending basalt fibers and aluminum silicate refractory fibers. The thickness of the fireproof heat insulation layer is 0.1 mm to 0.3 mm; the fireproof roller shutter cloth further comprises a fire receiving surface layer and a heat radiation prevention layer, the fire receiving surface layer is combined with the fireproof heat insulation layer, the side, away from the fire receiving surface layer, of the fireproof heat insulation layer is combined with the heat radiation prevention layer, the fire receiving surface layer, the fireproof heat insulation layer and the heat radiation prevention layer are combined through fireproof adhesive, and the thickness of the fire receiving surface layer and the thickness of the heat radiation prevention layer range from 0.1 mm to 0.3 mm.

The invention discloses nanoparticles, multifunctional hydrogel and preparation and application of the multifunctional hydrogel, and belongs to the technical field of hydrogel. The invention provides an innovative hydrogel material, novel nano particles are introduced and synthesized, the nano particles are prepared on the basis of polyethylene glycol (PEG) chain segment modified silsesquioxane (POSS), 1-8 I2959 molecules are grafted at the tail end of a PEG chain segment, and then the wide-temperature tough fluorescent hydrogel is formed on the basis of the nano particles. The invention provides an innovative hydrogel material, a novel nano particle is introduced and synthesized, so that the heat insulation property, the fluorescence characteristic and the mechanical property of the hydrogel are remarkably improved, and a new design thought and a technical path are provided for the development of a multifunctional hydrogel material.

The invention discloses a double-vacuum-layer horizontal liquid helium storage tank which is characterized by comprising an inner container, a supporting wall, an outer tank, a first flange structure and a second flange structure. The outer tank, the supporting wall and the inner container are sequentially arranged from outside to inside, a first vacuum layer is formed between the inner container and the supporting wall, and a second vacuum layer is formed between the supporting wall and the outer tank; the first flange structure is fixedly connected with the inner container and the supporting wall. The second flange structure is fixedly connected with the supporting wall and the outer tank; a heat insulation reflecting layer and a reinforcing layer are sequentially arranged on the outer wall of the inner container from inside to outside; according to the storage tank, on the premise that the storage amount of the liquid helium storage tank is guaranteed, heat radiation conducted from the interior is isolated and reflected, cold leakage caused by heat radiation and convection is effectively reduced, structural reinforcement is conducted on the inner container which is prone to failure, the safety of equipment during operation is improved, and the working efficiency of the equipment is improved.

The embodiment of the invention provides a heat insulation layer structure and a thin film type enclosure system, the heat insulation layer structure is applied to the thin film type enclosure system, the heat insulation layer structure comprises a primary heat insulation layer, a secondary heat insulation layer, a secondary heat insulation layer and a heat insulation layer, the primary heat insulation layer is made of a homogeneous enhanced polyurethane material; the secondary heat insulation layer is arranged on the outer side of the primary heat insulation layer, and the secondary heat insulation layer is composed of a supporting assembly and a heat insulation material arranged in the supporting assembly. The heat insulation layer structure and the thin film type enclosure system provided by the embodiment of the invention can assist the cavity wall of the storage cavity in bearing different external force impacts, and the heat insulation effect is good.

The utility model provides an air pipe hoisting structure, which belongs to the technical field of air pipe installation structures and comprises a support, a cushion block and a hoisting rod, the support is provided with an installation groove with an upward opening, the installation groove is a rectangular groove, the cushion block is also a rectangular cushion block, the cushion block is placed in the installation groove, the top surface of the cushion block is higher than the top surface of the support, and the cushion block is supported at the bottom of an air pipe. The top end of the suspender is suitable for being connected with the top wall of a wall body; after the cushion block is placed in the mounting groove, due to the fact that the periphery of the mounting groove is sealed, the cushion block can not move in the mounting groove, connection between the cushion block and the support is very stable, the cushion block can not move or fall off when vibrated, and normal operation of the air pipe is guaranteed.

The utility model relates to the technical field of cables, and discloses an anti-aging cable which comprises a shell body, eight air bags are evenly and fixedly arranged on the inner side of the shell body, sliding blocks are fixedly arranged on the opposite sides of every two of the eight air bags, coils are fixedly arranged on the inner sides of the eight air bags, and four wires are arranged on the inner sides of the coils. The shell body comprises an inner protective layer, a waterproof layer is arranged at the lower end of the inner protective layer, a base layer is arranged at the lower end of the waterproof layer, and an outer protective layer is arranged at the lower end of the base layer. According to the anti-aging cable, the air bag in the middle of the anti-aging cable can increase resistance when the cable is extruded, the sliding blocks can maintain the air bag, protect the cable and reduce cable damage, the cable is provided with a plurality of protective layers, and the protective layer material has an anti-aging effect, can insulate heat, water and insulate, and can prolong the service life of the cable; the cable can be better protected, and resource waste is reduced.

The utility model discloses a gas sensor based on porous ceramics. The porous ceramic-based gas sensor comprises a sensitive test structure and a packaging structure, the packaging structure comprises a porous ceramic cover plate and a porous ceramic substrate, and the sensitive test structure comprises a gas sensitive structure, a test electrode, an insulating layer and a heating electrode which are stacked on the substrate; wherein the gas sensitive structure is also electrically connected with a test electrode arranged on the insulating layer; the porous ceramic cover plate is provided with a packaging chamber and air holes communicated with the packaging chamber, and the porous ceramic cover plate can be combined with the porous ceramic substrate in a sealed mode so that the gas sensitive structure can be packaged in the packaging chamber. The gas sensor based on the porous ceramic, provided by the utility model, has good heat insulation property and is easier to form; the structure effectively avoids a fragile suspended structure, the strength and reliability are higher, the high temperature resistance is good, and the cable can be used in a more severe environment.

The present invention belongs to the field of building construction technology, and in particular, relates to an integrated assembled composite floor with thermal insulation and sound insulation structure, including a floor body, the upper end of which is fixedly connected with a plurality of connectors distributed in a rectangular array, a hollow layer having a thermal insulation effect is provided inside the floor body, and ventilation steel pipes connected to the outside are embedded in the inner walls of both sides of the hollow layer; and an adjustment component is used to adjust the thermal insulation effect of the hollow layer according to the outside temperature. The present invention can adjust the ventilation rate of the ventilation steel pipe according to temperature changes by setting an adjustment component, thereby adjusting the thermal insulation effect by changing the air convection speed; by setting an adaptive sound insulation component, the electric field strength around the deformable sound absorbing member can be adjusted according to the sound pressure of the outside world, and the sound insulation effect can be adjusted by changing the deformation degree of the deformable sound absorbing member.

The utility model discloses a photovoltaic heat preservation multifunctional curtain wall board which comprises a heat preservation unit and a photovoltaic unit, the heat preservation unit comprises a vacuum heat preservation plate and a first supporting plate which are fixedly connected, the photovoltaic unit comprises a solar cell panel, a light guide non-transparent decorative surface material which is covered on the surface of the solar cell panel, the back surface of the solar cell panel is provided with an electric wire, and the electric wire passes through the side wall of the vacuum heat preservation plate. The photovoltaic heat preservation multifunctional curtain wall board has the advantages of light weight, good heat preservation effect, high light conversion efficiency and artisticity.

The utility model relates to the technical field of window frames, in particular to a window frame thermal insulation mechanism which comprises a fixed window frame, grooves are formed in the upper side and the lower side of the interior of the fixed window frame, placing grooves are formed in the periphery of one side of the fixed window frame, and supporting steel bars are installed on the middle sides of the periphery of the interior of the fixed window frame. And an empty groove is formed in the inner wall of the containing groove, a clamping plate is slidably inserted into the outer side of the containing groove, a first auxiliary handle is fixedly connected to the portion, located on the outer side face of the containing groove, of the clamping plate, and a heat insulation filler strip is arranged on the inner side of the containing groove. According to the heat insulation window, the fixed window frame, the containing groove, the clamping plate, the first auxiliary handle, the empty groove and the heat insulation filler strip are arranged in a matched mode, the heat insulation filler strip which is aged after being used for a long time can be replaced, the air bag cushion, the special-shaped partition plate, the inflation strip, the inflation pipe column, the clamping hole, the clamping soft plug and the abutting round plate are arranged in a matched mode, the heat insulation effect is further improved, and meanwhile the heat insulation effect is improved. And the overall supporting strength of the fixed window frame is also enhanced.

The present invention discloses a liquid helium dewar for maintaining high vacuum, the liquid helium dewar comprises a vacuum outer cavity, a liquid helium cavity and a liquid helium diameter tube; a vacuum electrical connector and a vacuum port are arranged on the outer surface of the vacuum outer cavity, the vacuum electrical connector extends to the vacuum interlayer, and the vacuum port is connected to the vacuum interlayer; at least one suction device is arranged on the inner surface of the vacuum outer cavity, and the suction device is electrically connected to the vacuum electrical connector; at least one adsorption device is arranged on the outer surface of the liquid helium cavity, an adsorption medium is built in the adsorption device, and the adsorption device is provided with a heating device, and the heating device is electrically connected to the vacuum electrical connector. In the embodiment of the present invention, the liquid helium dewar can maintain a high vacuum for a long time, can achieve a good insulation effect, can maintain a low volatility for a long time, and has good practicality.

The utility model relates to the technical field of heat preservation pipes, in particular to a heat insulation type rubber and plastic heat preservation pipe which comprises a pipe body and heat insulation cotton, and the heat insulation cotton is arranged outside the pipe body in a sleeved mode and used for conducting heat insulation on the pipe body. The connecting mechanisms are fixedly mounted on the two sides of the pipeline main bodies, and the adjacent pipeline main bodies can be connected and mounted through the connecting mechanisms; and the pressing mechanism is arranged on the outer side of the heat insulation cotton, can be detached from the pipeline main body and is used for pressing the heat insulation cotton on the pipeline main body. The heat insulation type rubber and plastic heat preservation pipe can preserve heat, has a good heat insulation effect, effectively avoids heat loss in the heat insulation type rubber and plastic heat preservation pipe, can be conveniently connected and installed, and is easy to operate and high in practicability.

The utility model provides a dehumidification bathroom cabinet which comprises a cabinet body, a drawer and a dehumidification device. A dehumidification cavity with a drawer installation opening, a dehumidifier installation position and a water outlet is formed in the cabinet body, and magnetic metal strips are arranged on the periphery of the drawer installation opening. A panel of the drawer is provided with a magnetic adhesive tape, and when the drawer is in a closed state, the magnetic adhesive tape adsorbs the magnetic metal strip to form a sealing structure between the drawer and the cabinet body. The dehumidification device is installed at the dehumidifier installation position, and a water drainage pipe of the dehumidification device extends to the periphery of the dehumidification cavity through the water drainage opening. According to the dehumidification bathroom cabinet, on one hand, the space in the cabinet body is actively dehumidified through the dehumidification device, on the other hand, a sealing structure with high sealing performance is formed between the drawer and the installed dehumidification cavity through the magnetic adhesive tape and the magnetic attraction metal strip, external water vapor can be prevented from entering the cabinet again after dehumidification is finished, and the dehumidification effect is improved. Therefore, the dehumidification effect of the internal space of the bathroom cabinet is improved.

The invention discloses an insulating tube optimization structure and method of a superconducting cable, and belongs to the technical field of superconducting cables. The concrete structure comprises an outer pipe, an inner pipe and a heat-insulating material layer, wherein the heat-insulating material layer comprises a heat-insulating material and spacing bars. The method specifically comprises the following steps: respectively selecting spacing bars with different shapes and diameters, and alternately stacking a heat insulating material of a heat insulating material layer of the insulating tube and the spacing bars; heat flow is calculated, and the shape and the diameter of the optimal spacing bar are obtained; heat insulation material layers of different heat insulation structures are constructed respectively, and the optimal heat insulation structure and the shape and diameter of the spacing bar are obtained; thermal insulation material layers of different numbers of thermal insulation materials are constructed respectively, the optimal thermal insulation material layer is obtained, and optimization of the insulation pipe of the superconducting cable is achieved. A middle spacing bar is replaced by a heat insulation material with the same thickness, a better heat insulation effect is achieved in a small space, the spacing bar with low heat conductivity is used as a supporting structure, solid heat conduction of the heat insulation material is reduced, evacuation of a vacuum interlayer is facilitated, and optimization of the insulation pipe is achieved.

The utility model discloses an energy-saving type steel-plastic door and window profile which comprises a PVC plate, the upper side of the PVC plate is provided with first hollow grooves, second hollow grooves and third hollow grooves, the number of the second hollow grooves is two, the two first hollow grooves are formed in the two sides of the second hollow grooves respectively, and the two first hollow grooves are symmetrically arranged. The PVC plate has the advantages of being good in heat conduction effect and firm enough, in the actual use process, the heat conduction coefficient of the PVC plate is effectively improved through the arrangement of the first hollow groove, the second hollow groove and the third hollow groove and the arrangement of the cavities, the heat insulation effect of the PVC plate is improved through the rock wool layer, and the heat conduction effect of the PVC plate is improved. Meanwhile, the firmness of the PVC plate block can be effectively improved through a steel-plastic co-extrusion structure between the steel body and the PVC plate block, the PVC plate block still has high firmness and firmness after being used for a long time through the corrosion resistance of the steel body, and the sound insulation effect of the PVC plate block can be effectively improved through the glass fiber cotton layer.

The present invention discloses a cryogenic liquid transport semitrailer, comprising: a tank body, an inner liner is arranged in the tank body, a traction seat is fixed on the front lower part of the tank body, two auxiliary beams are fixed on the rear lower part of the tank body, a walking mechanism is arranged under the two auxiliary beams, two supporting legs are installed on the front lower part of the tank body, an operating box is also arranged on the tank body, and the outer side of the inner liner is covered with a polyurethane foam insulation layer and an outer shell skin in sequence; the structure of the traction seat also includes: a traction base plate and a cylindrical support frame, a traction pin is fixed on the traction base plate, the top end of the cylindrical support frame is fixed to the inner liner, the bottom end of the cylindrical support frame is fixed to the traction base plate through an insulating structure, and the inner cavities of the cylindrical support frame and the two auxiliary beams are filled with polyurethane foam material through their respective filling ports; the two supporting legs and the operating box are fixed to the inner liner through the insulating support plate. The above-mentioned semitrailer has excellent insulation effect; and its own weight can be reduced by about 3t, and 6.5m more can be transported. 3 About low temperature liquid.

The utility model discloses a heat insulation and heat preservation gel structure which comprises a base plate assembly, the top of the base plate assembly is fixedly connected with a medium layer, the top of the medium layer is fixedly connected with a colloid layer, a heat insulation layer is arranged on the right side of the base plate assembly in a penetrating mode, and the front face and the back face of the base plate assembly are fixedly connected with heat preservation layers. A mineral wool layer is arranged in the heat insulation layer and used in cooperation with the heat insulation layer, a polystyrene board layer is fixedly connected to the bottom of the mineral wool layer and used in cooperation with the mineral wool layer, and a polyurethane foaming material layer is fixedly connected to the bottom of the polystyrene board layer. The polyurethane foaming material layer is used in cooperation with the polystyrene board layer. According to the gel structure, the phenomenon that the traditional heat insulation and heat preservation effect is poor is changed, various heat insulation and heat preservation materials are adopted for heat insulation and heat preservation treatment, the phenomenon of heat loss cannot occur in the using process, and the phenomenon that the using quality of gel cannot be guaranteed is avoided.