543 results about "Air insulation" patented technology

The invention discloses a heat insulation phase change coating. The coating comprises the following components in parts by weight: 40-80 parts of double-component epoxy resin, 5-35 parts of heat dissipation filler, 5-30 parts of filler with high heat resistance and 5-25 parts of a phase change material. The heat insulation coating disclosed by the invention has the characteristics of high heat reflectivity, high heat radiation, low heat conduction, heat absorption, storage and release in a certain temperature range, multiple effects, good effects of reflecting illumination, realizing heat insulation and reducing temperature, safety, environment-friendly effect, strong adhesion and convenience in construction. The invention further discloses a preparation method of the coating.

An elongated roof ridgeline vent is disclosed, comprising an elongated opening in a roof-cover along the ridge and a canopy or cover over the opening. Baffles may be provided between the canopy and the roof-cover to prevent wind-driven rain from entering the opening. Screens or other filtering elements can be provided to prevent the ingress of insects, vermin, and debris through the opening. Also disclosed is a roof employing upper and lower roof-covers spaced apart to form an air insulation layer, with a ridgeline vent in the upper roof-cover. The air layer additionally acts as a ventilation path for air from the attic. Also disclosed are eave vents, undereave vents, and layers for reflecting or absorbing solar radiation. Additionally disclosed are embodiments that employ these ventilation principles in a roof-portion with an upper apex, such as a conical roof.

To provide a heat generating body in which a space can be surely secured in the surroundings of a heat generating composition and heat insulation of the heat generating composition, adjustment of the quantity of air to be taken in and prevention of dispersion of water can be achieved.

A heat generating body having an exothermic part having a heat generating composition molded body which is a molded body of a heat generating composition capable of causing heat generation upon contact with air in a convex of an accommodating bag having plural irregularities by laminating the heat generating composition molded body on a substrate, covering a covering material thereon and then heat sealing the periphery of the heat generating composition molded body, characterized in that the heat generating composition contains, as essential components, an exothermic substance, a carbon component, a reaction accelerator and water; that the heat generating body is composed of a sectional exothermic part and a sectioned part, the sectional exothermic part accommodates the heat generating composition molded body therein, the sectioned part is a seal part, and the sectional exothermic part is disposed via the sectioned part; that at least a part of the sectional exothermic part has an air-permeable surface; that the air-permeable surface which comes into contact with the heat generating composition molded body is constituted of a non-water absorptive raw material; that the sectional exothermic part and the sectioned part have a difference of altitude, and the part having a difference of altitude is covered by an air permeability adjusting material via a bonding layer and forms a partitioned spacial part; and that the spacial part is provided with a primary air intake.

A protective guard for the transparent dome of a surveillance camera system deployed in a harsh or dangerous outdoor environment. The guard is a hemispherically shaped metallic unit that covers the dome with a series of longitudinal arcuate ribs originating at the equator of the hemisphere and terminating at an open circle at the pole. The guard may be deployed on a surface-mounted dome having an upward, downward or sideways orientation, or it may be deployed on a heavy-duty dangling pendant enclosure. The pendant embodiment includes weather-resistant features including air insulation around the internal components, and slots that allow for the passage of fluid through the pendant for removal of moisture, cooling and evaporation.

The invention relates to a fireproof composite brick and a preparation method thereof and discloses a structure heat-insulation integrated composite brick and a preparation method thereof. The structure heat-insulation integrated composite brick comprises a heavy working layer made of a compact fireproof material and a light heat insulation layer made of a light aggregate; the heavy working layer and the light heat insulation layer are compounded by adopting vibration pressurization or machine moulding; and a length size ratio of the heavy working layer to the light heat insulation layer is (1-5) to (3-1). By the invention, the shortcoming that the heat conducting coefficient of a heavy brick is large is overcome. The invention provides the structure heat-insulation integrated composite brick having high abrasive resistance, high fire resistance degree, high structural strength and high temperature preservation and heat insulation performance and the preparation method of the structure heat-insulation integrated composite brick.

In order to provide a converter station for a high-voltage DC connection between two three-phase AC voltage networks, having a converter building which has a number of floors, and in which transformer units, converter devices, filter units, a gas-insulated switchgear assembly with feeder units, at least one cooling system, a DC cable pot head for electrical connection of a high-voltage cable carrying direct current, a smoothing reactor and gas-insulated busbars for electrical connection of these components are arranged, while maintaining its compact design and the arrangement of its components in a closed building, whose cost is low and which has a physically simple design, the invention proposes that the DC cable pot head and the smoothing reactor are arranged on the same floor as the converter valves and are electrically connected to one another via an air-insulated connecting device, with an air-insulated isolating switch being provided in order to produce an isolating gap between the DC cable pot head and the smoothing reactor.

A fresh keeper used in refrigerating apparatus comprises a lid (1), an outer drawer (2) and at least one inner drawer (3) which is contained in said outer drawer, a gap is formed between the outer drawer and the inner drawer such that said outer drawer (2), said inner drawer (3) and said lid (1) form a sealed space when they are in mounting state. The effect of heat preservation is improved due to the air insulating layer, thereby the temperature inside the fresh keeper is not easily influenced by the ambience and the temperature inside the fresh keeper is more stable. Because of the double-layer structure used in the invention, an air layer is formed. The pressure of the vapor in the air layer is much more than that of the inner drawer, thus it is difficult for the vapor in the inner drawer to diffuse into the air layer, and thereby the moisture in the inner drawer is ensured so that the humidity is kept to be a high value.

The invention relates to a method for preparing rubber packing from modified oil shale semicoke. The method is characterized by comprising the following steps: 1) performing superfine crushing on oil shale semicoke after destructive distillation; 2) roasting in a high-temperature furnace, performing air insulation heat preservation, and performing furnace cooling so as to obtain carbonized oil shale semicoke; 3) modifying the carbonized oil shale semicoke superfine powder by using a surface modifier so as to obtain modified oil shale semicoke powder, wherein the addition amount of the surface modifier accounts for 2% of the mass of the powder, the modification temperature is the room temperature, and the modification time is 30 minutes; 4) smelting the modified oil shale semicoke, rubber, carbon black, zinc oxide, stearic acid, an antioxidant, liquid paraffin, sulfur and a promoter in a smelting machine at certain temperature; and 5) cooling, and molding by using a press vulcanizer. Organic matter residues in the oil shale semicoke can be sufficiently utilized, wastes can be turned into wealth, environment pollution caused by air storage can be eliminated, the carbonized oil shale semicoke powder is uniform in surface carbonization, solid in wrapping, good in organic matter compatibility, stable in performance, simple in process and low in cost. Various indexes of mechanical properties of testing samples can meet national standards.

A power adapter includes an insulating casing including an enclosing wall and defining a sealing chamber therein, a power transforming unit disposed in the sealing chamber, and a heat sink device including a heat dispersing member supported within the sealing chamber at a position between the enclosing wall and the power transforming unit to thermal-communicate with the power transforming unit, wherein the heat dispersing member has an air insulating cavity formed above the power transforming unit in such a manner that when the power transforming unit generates heat for heating up air within the air insulating cavity, the heat is diffused throughout the air insulating cavity so as to evenly disperse on the enclosing wall of the insulating casing.

The invention discloses a three-dimensional heat-pipe heat exchanger. A plurality of pipes are combined into an S-shaped heat pipe by a U-shaped elbow, and the heat-pipe heat exchanger connected by the U-shaped elbow can form a completely continuous coiled pipe. The S-shaped heat pipe and the heat exchanger can be configured into an integrative heat exchanger, wherein a condensing end and an evaporating end are isolated by a heat insulation section, or can be configured into a split type heat exchanger, wherein the evaporating end and the condensing end are connected by an evaporating pipe and a reflowing pipe. The three-dimensional heat-pipe heat exchanger can form a continuous closed loop, in this way, the heat exchanger works no matter whether the reflowing is implemented with the aid of gravity. A plurality of U-shaped pipes are needed to interconnect in the production of the S-shaped pipe to form one S-shaped heat pipe loop, wherein one pipe has an opening end, each of all the pipes can work as one independent heat pipe only by injecting enough refrigerant from the opening end at one time. The three-dimensional heat-pipe heat exchanger can be used for the aspects of enhancement of dehumidification effect of the air conditioner, energy recovering, heat radiation of partial space, and the like.

The construction is a coaxial cavity resonator (20, 30, 40, 50) comprising at least one conductive body (11, 31), which body is open at one end and shortened from a quarter-wave resonator. The conductive body includes a main rod (16), which is in one end attached to the cavity wall (15), and a main disc (17) attached to the free end of the main rod (16). The cavity (12) further comprises one or more conductive plates (21, 41, 51) located between the main disc (17) and the side walls (13), at the first side (17a) of, and out of galvanic contact with, the main disc (17). The shortening is carried out by creating air-insulated extra capacitance between the resonator cavity walls via the conductive plates and a mechanical structure at the open end of the conductive body.

The invention provides closed hole-shaped vacuum foam for heat insulation and sound insulation and a method for preparing the same and belongs to the field of novel materials of heat insulation and sound insulation and noise reduction. In the conventional vacuum foam materials, a core material is open-hole foam, and in a process of using the conventional vacuum foam materials, the heat-insulated property of the conventional vacuum foam materials is lost when any part of the conventional vacuum foam materials is damaged. The closed hole-shaped vacuum foam for heat insulation and sound insulation, provided by the invention, consists of the closed hole-shaped vacuum foam with a closed hole rate of no less than 10 percent, a density of 0.002 to 0.5g/cm3 and a vacuum degree of 0.03 to 0.101325MPa, and a metallic material or high molecular material vapor-proof layer coated on the surface layer of the closed hole-shaped vacuum foam. The method comprises the following steps: preparing closed hole foam plastic raw materials, and foaming and forming the raw materials in a vacuum environment or directly vacuumizing the closed hole-shaped foam to obtain the closed hole-shaped vacuum foam; and coating the vapor-proof layer on the surface of the closed hole-shaped vacuum foam to obtain the closed hole-shaped vacuum foam for heat insulation and sound insulation. The closed hole-shaped vacuum foam has the advantages of high strength, excellent heat insulated and excellent insulated properties, smooth appearance, reliable use and simple process.

The invention discloses a solar energy thermoelectricity co-generation and co-supply system. The solar energy thermoelectricity co-generation and co-supply system is mainly composed of a water system and an electrical power system, which are relatively independent. The main component of the solar energy thermoelectricity co-generation and co-supply system is a solar energy thermoelectricity co-generation component. The structural materials of the component comprise a glass cover plate layer, an air insulation layer, a photovoltaic cell sheet, an EVA adhesive film, a metal absorber plate, a heat exchange tube liquid flow channel, an insulating layer and a packaging base plate from top to bottom. A silica gel spacer supports between the metal absorber plate and the glass cover plate to form the air insulation layer; a high-selectivity heat absorbing coating is sprayed on the metal absorber plate to improve the absorbing efficiency for sunlight. Under the shining of the sunlight, the outermost layer cell sheet uses a photovoltaic effect to transform light energy into electric energy and output to supply power to the outside; longitudinal heat exchange tubes in the metal absorber plate on the lower layer collect energy of the sunlight as solar energy heat collecting tubes and heat generated by the cell sheet heating and transforms the heat into heat of cycle fluid to output, therefore, the energy utilization efficiency is improved to the most extent, and the thermoelectricity co-generation is achieved.

This invention relates to stator coil set main insulation layer and anti-air block layer method, which comprises the following steps: a, covering on copper center conductive bar by mica bands; b, covering resistance band outside stator coils set; processing vacuum pressure dipping; d, coiling VPI anti-air insulation layer outside main insulation layer and putting stator coil into mode; e, putting fix furnace into shape; f, outside furnace for cooling then removing mode band.

The invention provides a double-pole dry air or nitrogen insulated metal closed switch cabinet for a high-speed railway, solving the problems of environment pollution, complex structure and safety in SF6 gas insulation. The switch cabinet is characterized in that a horizontal breaker and a built-in current transformer are installed in a lower gas tank; an insertion and extraction type casing pipe S2 and an insertion and extraction type cable casing pipe S3 are installed in the lower gas tank and under the horizontal breaker and the built-in current transformer; and the connection between an upper gas tank and the lower gas tank can be achieved through an assembly type gas tank to connect a casing pipe. The switch cabinet has the beneficial effects that SF6 gas insulation is replaced by adopting dry air insulation, which is adaptive to the environmentally-friendly requirement; and the installation safety and one-side wiring of the built-in current transformer can be realized by taking a decompression channel as an installation hole without additionally arranging the installation hole on the panel of the cabinet body, thereby reducing the risk of air leakage of the switch cabinet, leading the internal and external electric fields of the product to be more uniform, improving the safety coefficient of the switch cabinet, effectively expanding the number of outlet cable casing pipes and being convenient for a user.

The invention provides a helium ionization gas chromatography system for analyzing decomposition products of SF6. The system in characterized by includes a central cutting device and a double helium ionization detector. The central cutting device includes four switching valves, six chromatography columns and seven carrier gas paths. The double helium ionization detector includes two sets of helium ionization detector devices. The helium ionization gas chromatography system for analyzing decomposition products of SF6 also includes a chromatography column box temperature controlling device and a carrier gas cutting and air-insulation device, wherein the chromatography column box temperature controlling device includes a set of programme temperature increasing column box and three sets of individual column sub temperature-controlling column boxes, and the carrier gas cutting and air-insulation device includes a set of four-way valve system and a set of carrier gas path. By means of the system, total analysis of the decomposition products of SF6 can be completed just by one sample-feeding operation.