41results about How to "Reduced heat transfer capability" patented technology

The invention discloses an explosion-proofing infrared UV flame detector including an explosion-proofing outer casing, one side of the explosion-proofing outer casing is provided with a shield plate, the inside of the explosion-proofing outer casing is provided with an explosion-proofing inner casing, a first vacuum layer is formed between the explosion-proofing outer casing and the explosion-proofing inner casing, one side, closing to the shield plate, of the explosion-proofing outer casing is provided with a piece of explosion-proofing outer glass, and one side, closing to the explosion-proofing outer glass, of the explosion-proofing inner casing is provided with a piece of explosion-proofing inner glass. The first vacuum layer is formed between the explosion-proofing outer casing and the explosion-proofing inner casing, a second vacuum layer is formed between the explosion-proofing outer glass and the explosion-proofing inner glass, the vacuum layers reduce the effect of heat transfer to make the temperature conduction of the inside and the outside of the sensor slow, thereby preventing internal electronic components from being melted, and reducing the internal blasting probability, and moreover, the detector main body is provided with an infrared flame detector, a UV flame detector, and a high-definition pick-up head, so that the scene of fire can be maximally detected.

The invention provides a montmorillonite-based nano composite heat insulation coating and belongs to the technical field of heat insulation materials used in equipment or buildings. The coating comprises the following components in percentage by mass: 5 to 30 percent of montmorillonite, 15 to 30 percent of vinyl acetate/acrylic emulsion or styrene-acrylic emulsion, 30 to 50 percent of water, 5 to 10 percent of nano calcium carbonate, 2 to 6 percent of nano zinc oxide, 2 to 6 percent of nano titanium oxide, 0.01 to 0.1 percent of film-forming auxiliary, 0.1 to 2 percent of antifoaming agent, 0.1 to 2 percent of wetting dispersant, 0.5 to 2 percent of antifreezing agent and 0.1 to 2 percent of leveling agent. A method for preparing the coating comprises the following steps of: under the condition of low-speed stirring, stirring the water, the montmorillonite, the wetting dispersant and a half of the antifoaming agent at a high speed for 1 to 2 hours; adding the nano calcium carbonate, the nano zinc oxide and the nano titanium oxide into the mixture with stirring; stirring at a high speed for 3 hours; under the condition of low-speed stirring, slowly adding the emulsion dropwise and consequently adding the rest antifoaming agent, the film-forming auxiliary, the antifreezing agent and the leveling agent into the mixture; stirring for 3 to 4 hours at a low speed; and finally canning to obtain the finished product of the coating. The montmorillonite-based nano composite heat insulation coating has the advantages of good energy saving effect, stable performance, safe use and convenient application.

The invention discloses a nanoneedle-structure manganese vanadate self-cleaning paint, belonging to the technical field of functional materials. The nanoneedle-structure manganese vanadate self-cleaning paint is composed of the following components in percentage by mass: 20-40% of nanoneedle-structure manganese vanadate, 15-30% of vinyl acetate-acrylic emulsion, 30-50% of water, 6-20% of nano silicon dioxide, 0.05-0.2% of alcohol ester-12, 0.5-2% of tributyl phosphate, 0.5-2% of 10% sodium hexametaphosphate water solution, 0.5-2% of ethylene glycol and 0.5-2% of polyurethane. The nanoneedle-structure manganese vanadate self-cleaning paint disclosed by the invention has the properties of self-cleaning, pollution prevention, thermal insulation, heat preservation and the like, has the advantages of stable performance and low cost, and is convenient for construction.

The invention discloses a vanadate vanadate nanorod composite paint, belonging to technical field of functional materials. The vanadate vanadate nanorod composite paint is prepared from the following components in percentage by mass: 20-40% of zinc vanadate nanorod, 15-25% of styrene-acrylic emulsion, 30-45% of water, 5-20% of nano aluminum oxide, 0.05-0.2% of alcohol ester-12, 0.5-2% of polyurethane, 0.5-2% of 10% sodium hexametaphosphate water solution, 0.5-2% of tributyl phosphate and 0.5-2% of ethylene triol. By adopting the zinc vanadate nanorods, the invention has the characteristics of high activity, high stability, no toxicity, low cost and the like, and can implement mass preparation of the vanadate nanorod composite paint. The vanadate vanadate nanorod composite paint disclosed by the invention has stable self-cleaning and anti-fouling properties.

The invention relates to a modular heat exchange method and device particularly suitable for a biomass combustion system. A plurality of standardized heat exchange modules capable of using various heat carrier media are included. Flue gas (6) flows in heat exchange pipes (8), and the heat exchange pipes (8) are coaxially arranged between the different heat exchange modules. Thus, when the heat exchange modules operate, a compressed air cleaning spraying gun (30) can be used for effectively cleaning dust on the heat exchange pipes. Due to the fact that dust purifying no longer has to be achieved through the high flowing speed of the flue gas (6), it is possible to decrease the speed of the flue gas and lower the power demand of an induced draft fan. The modular heat exchange method and device are particularly suitable for construction of a system generating hot air through indirect heating, for example, the hot air at 100 DEG C or above is generated efficiently when the modular heat exchange method and device are used for grain drying. The heat exchange device can be arranged in the vertical or horizontal direction according to the needs, the size and the length of the heat exchangedevice can also be designed according to the needs, and the great performance is achieved.

The embodiment of the invention provides a thermocirculator. The thermocirculator comprises a sample block (1) provided with a blind hole array; and N heating and cooling means (2), N being a positive integer greater than 2; wherein the upper parts of all the blind holes (11) are connected, the N heating and cooling devices (2) respectively heat and/or cool the bottoms of the blind holes (11) in N different areas of the sample block (1), and each area comprises one or more blind holes (11). According to the embodiment of the invention, the upper parts of the blind holes in the sample block are connected, and the bottoms of the blind holes in different areas of the sample block are respectively heated and/or cooled through the N heating and cooling devices, so that the heat transfer effect among the blind holes in different areas of the sample block is reduced; and the accuracy of temperature control of different areas of the sample block and the repeatability of the experiment are improved.

The invention discloses a pre-cooling device of a plastic tubular product manufacture line, which includes a shell with a sandwich; the inlet end of a material circulating channel in the inner cavity of the shell is communicated with the material outlet of a handpiece finish mold; the outlet end is communicated with the inlet of a sizing sleeve; the two ends of the sandwich of the shell are closed; the sandwich of the shell and the two end surfaces of the sandwich form the refrigerating channel of the pre-cooling device; a refrigerant inlet on the refrigerating channel is arranged on the refrigerating channel near the end of the handpiece finish mold; the outlet is arranged on the refrigerating channel near the end of the sizing sleeve. The pre-cooling device of the invention has the advantages that a high temperature material blank extruded from the handpiece finish mold is cooled by the pre-cooling device of the plastic tubular product manufacture line; therefore, the temperature of the extruded material blank is reduced and the material blank is contracted; the outer diameter of the material blank is almost consistent with the inner diameter of the sizing sleeve, thus being easier to enter the sizing sleeve, reducing the heat transferring action between the material blank and the sizing sleeve and avoiding the problems of over-heating of the sizing sleeve and blocking of the material blank from happening; thereby effectively improving the manufacture speed of the plastic tubular product manufacture line and stabilizing the manufacture.

The invention discloses an air-cooled hearth roll. The air-cooled hearth roll comprises a roll cylinder, a sleeve, and roll shafts fixedly connected in two end holes of the roll cylinder; the sleeve is fixedly connected between the two roll shafts, and the inner hole of the sleeve is connected with the shaft holes of the two roll shafts to form a cooling air channel; the end portion of one end of each of the roll shafts connected with the roll cylinder is provided with a heat insulation structure; the heat insulation structure is arranged in a cavity at the inner side of the end surface of one end of the corresponding roll shaft connected with the roll cylinder, and comprises a heat insulation filler and a baffle plate; the baffle plate is in sealing connection to the inner side of a cavity at the inner side of the end surface of one end of the corresponding roll shaft connected with the roll cylinder, and a cavity between the baffle plate and the end surface of one end of the corresponding roll shaft connected with the roll cylinder is filled with the heat insulation filler; and the heat insulation filler is alumina silicate fibers. The air-cooled hearth roll adopting an air cooling system and cancelling a water circulation cooling system has the advantages of low fuel loss, low device investment and low device maintenance.

The patent of the present invention discloses an exterior wall of a building with an algae mud active silicate insulation layer, which includes a wall base layer, and the wall base layer is sequentially coated with a melamine resin bonding layer and an algae mud active silicate insulation layer from the inside to the outside. The layer and the acrylic waterproof layer adopt melamine resin bonding layer, which has good adhesion and makes the insulation coating firm and durable as a whole; Materials, because objects and objects are used to conduct heat through heat transfer, and the algae mud active silicate insulation layer reduces this essential heat transfer method to the lowest level, which can meet people's pursuit of thermal insulation performance. The existence of the waterproof layer can well prevent moisture from penetrating into the insulation layer, and can effectively prevent the insulation layer from being destroyed by water.

The invention discloses a production method of an artificial-stone composite board. The artificial-stone composite board comprises a wall base layer, wherein the wall base layer is sequentially coatedwith a melamine resin bonding layer, an algal mud active silicate thermal-insulation layer and an acrylic acid waterproof layer from inside to outside. The melamine resin bonding layer which is adopted is good in adhesion so as to allow a thermal-insulation coating to be firm and durable as a whole. The algal mud active silicate thermal-insulation layer allows the heat transfer capacity of the material to reduce or approach the minimum limit, and is a super thermal insulation material. The heat conduction among objects is realized by heat transfer in the prior art, while the algal mud activesilicate thermal-insulation layer reduces the essential heat transfer mode to a minimum so as to satisfy the pursuit by people on thermal insulation performance. The waterproof layer can well preventmoisture from permeating into the thermal insulation layer and can effectively prevent the thermal insulation layer from being destroyed by water.

The invention discloses an energy-saving type air-cooled hearth roll, which includes a roller, roll heads and roll necks. The roll heads are arranged at both ends of the roller; the roll necks are tapered tubular roll necks with small ends facing the roll heads, and fixedly connect the roller and the roll heads. Further improvement lies in that: the hearth roll also includes a casing; the casing runs through the roll heads, the roll necks and the roller axially, and fixedly connects the inner holes of the two end roll heads; the joints of the roller and the roll necks are provided with partition plates; the partition plates are sleeved on the outer wall of the casing, and airtight cavities are formed between the partition plates and the roll heads' ends and the roll necks' inner holes, the cavities are filled with a thermal insulation material to form a thermal insulation structure. tapered tubular roll neck transition connection is adopted between the roller and the roll heads to significantly reduce stress concentration at the joints of the roller and the roller shaft; the casing is disposed for ventilation cooling so as to significantly lower fuel loss, at the same time a water circulation cooling system is canceled, thus reducing equipment investment and simplifying equipment maintenance. The roll necks are internally provided with a thermal insulation structure, thus significantly reducing the capability of heat transfer from the roller to the roll heads, and obviously improving the bearing working condition.

The invention provides an air conditioner outdoor unit protective cover with an electric shutter structure, which comprises a cover shell, an electric shutter is mounted on the front side of the cover shell, an electric control assembly is mounted at the top of the cover shell, and the electric control assembly controls the opening angle of the electric shutter. When the air conditioner outdoor unit is not used for a long time, the electric blind window rotates to be closed, erosion of the sun, wind, rain and dust is effectively shielded, the air conditioner outdoor unit is protected, and the service life of the air conditioner outdoor unit is prolonged. When the air conditioner outdoor unit works at a high speed, the electric blind window rotates to be completely opened and closed, and the heat transfer effect is ensured when the air conditioner outdoor unit works; when external direct sunlight is serious, the temperature of the air conditioner outdoor unit is too high, and the heat transfer effect of the air conditioner outdoor unit is poor, the electric blind window rotates to 45 degrees to be opened and closed, the air conditioner outdoor unit is prevented from being directly exposed to the sun, the temperature of the air conditioner outdoor unit is effectively reduced, and the heat transfer effect of the air conditioner outdoor unit during working is guaranteed.