8results about How to "Effective heat transfer" patented technology

The application provides a liquid nitrogen wetting contact angle measuring device for a super-low-temperature solid surface, comprising a super-low-temperature solid surface cooling assembly, a nitrogen atmosphere protection assembly, a liquid nitrogen titration assembly and a wetting contact angle observation assembly, wherein the super-low-temperature solid surface cooling assembly can make the sample quickly enter and maintain the super-low-temperature state during the test through liquid nitrogen circulation and a silver cooling plate. The nitrogen atmosphere protection assembly discards the commonly used vacuum scheme in engineering and adopts dry nitrogen protection to avoid the rapid gasification of liquid nitrogen under vacuum. The liquid nitrogen titration device realizes the dropping of liquid nitrogen at different heights, supports the related research on wetting contact angle measurement and droplet impact dynamics. The wetting contact angle observation assembly guarantees the observation of the droplet shape under the super-low-temperature environment through a light source plate, a blowing device and the like. The application fills the gap in the research on the wetting and spreading behavior of super-low-temperature fluid on a cooled solid surface and has important value for super-low-temperature fluid lubrication and super-low-temperature fluid transportation.

A compact type winding pipe heat exchanger comprises a shell pass cylinder, a winding pipe, a winding pipe and a winding pipe, the two tube plates are respectively arranged at the upper end and the lower end of the shell pass cylinder; the central cylinder is vertically arranged in the shell pass cylinder; the heat exchange tubes are arranged in the shell pass barrel, and the two ends of each heat exchange tube are supported on the corresponding tube plates respectively; the two tube boxes are provided with tube pass connecting tubes and are respectively arranged on the corresponding tube plates; the lower portion of the center cylinder is hollow to form a first channel with the bottom open, and a first through hole is formed in the side wall of the first channel so as to communicate the first channel with the inner space of the shell pass cylinder. The upper part of the central cylinder is hollow to form a second channel with an open top; a second through hole is formed in the side wall of the second channel; meanwhile, shell pass connecting pipes are arranged on the two pipe boxes, and the shell pass connecting pipes are communicated with the bottom opening of the corresponding first channel and the top opening of the corresponding second channel through connecting pipes of the shell pass connecting pipes. The axial length of the heat exchanger is reduced while the heat exchange effect is guaranteed.

The utility model relates to a filter box for reducing the pouring and drying amount of aluminum alloy melt, and belongs to the technical field of melt filtering. The filter box comprises a filter box body; a filling block is arranged in the filter box body and is suspended in the center of the interior of the filter box body; a lifting lug is arranged at the top of the filling block; a winch is arranged on a wall body above the filter box body; a hook is fixed at one end of the bottom of a cable in the winch; the lifting lug is detachably connected with the hook; a filter plate is arranged at the lower part of the filter box body; and a liquid outlet is formed below the filter plate. The filling block is additionally arranged in the aluminum alloy melt filter box provided by the utility model and is placed in the center of the filter box, so that the constant temperature of each part of the flowing aluminum liquid can be effectively ensured, the flow speed in the filter box is stable, the drying amount is reduced, the consumption of the aluminum alloy solution is reduced, and meanwhile, the production efficiency and the stability in the casting process are improved; and defects are reduced, so that the rework rate and the rejection rate are reduced.

The application belongs to the technical field of photothermal interface evaporation, and particularly relates to a core-shell structure solar evaporator and a preparation method and application thereof. The core-shell structure solar evaporator comprises a hydrophilic inner core and a hydrophobic shell; the hydrophilic inner core and the hydrophobic shell both use Co-doped MoS2 as a photothermal conversion material. The unique three-dimensional macrostructure of the core-shell structure solar evaporator not only enlarges the evaporation area, but also enhances the light absorption capacity through multiple reflections of incident light. In addition, because the hydrophobic layer is the shell, the problem of surface salt deposition of the existing solar evaporator during seawater desalination can be solved, the core-shell structure solar evaporator has excellent salt resistance, and can stably perform seawater desalination for a long time.

The invention discloses a battery device. The battery device comprises two adjacent single batteries, wherein the side surfaces of the two single batteries are opposite to each other; the heat exchange part is arranged between two adjacent single batteries and extends along the length direction of the side surface, the heat exchange plate extends along the length direction of the side surface, the two opposite sides of the heat exchange plate are respectively attached to the opposite side surfaces of the two adjacent single batteries, and the current collector is arranged at at least one end of the extension direction of the heat exchange plate; a heat-conducting glue layer with the thickness of 0.04-6mm is arranged between the heat exchange plate and the single battery; a plurality of reinforcing ribs extending and penetrating in the length direction are arranged in the heat exchange plate at intervals in the height direction of the heat exchange plate, so that a liquid channel and a non-liquid channel are formed in the heat exchange plate; and the thermal resistance value R1 between the side surfaces of two adjacent single batteries is greater than or equal to 1.5 * 10 <-3 > m < 2 >. K / W and less than or equal to 0.12 m < 2 >. K / W, and the thermal resistance value R2 between the side surfaces of the single batteries and the heat exchange parts is greater than 0 and less than or equal to 0.03 m < 2 >. K The risk of thermal runaway can be reduced while the heat exchange effect of the battery device is improved.

The utility model discloses a separation circulating device and gasification kettle, separation circulating device includes heating case, heat exchange structure, circulating pump and air sending structure, heating case is used for containing and heating heat exchange fluid, heat exchange structure is equipped with installation site and heat exchange position, and has the heat exchange flow channel that passes through installation site and heat exchange position, and both ends of heat exchange flow channel all communicate heating case, circulating pump communicates heat exchange flow channel, is used for driving heat exchange fluid and circulates flow between heat exchange flow channel and heating case, air sending structure is installed in heat exchange structure, and is located installation site, and has air sending flow channel and air sending mouth, and air sending mouth communicates air sending flow channel, is used for output air. The scheme can heat air and liquid light hydrocarbon simultaneously through heat exchange structure, realizes air preheating, avoids cold air to directly contact liquid light hydrocarbon and absorbs light hydrocarbon heat, and guarantees liquid light hydrocarbon and heat exchange structure effective heat exchange, and then improves light hydrocarbon gas production efficiency, and the device is relatively compact, saves the occupied space.

The invention discloses a small space-based polarization super-lens camera and an imaging method, the small space-based polarization super-lens camera comprises a shading assembly, polarization super-lens assemblies, an imaging system and a heat dissipation assembly which are arranged on a camera shell, the two polarization super-lens assemblies are arranged according to the light path direction, and the shading assembly is arranged in front of the polarization super-lens assemblies according to the light path direction; the imaging system is arranged behind the polarization super-lens assembly according to the light path direction, and the heat dissipation assembly is used for conducting heat adjustment on the imaging system. The polarization super-lens camera is installed on a supporting rod of a spacecraft and serves as a main optical system to be applied to on-orbit self-detection service, and the advantages of being small in size, light in weight, high in reconstruction efficiency and the like are achieved. The two groups of polarization super lens assemblies can form two groups of orthogonal polarization sub-images on an image plane at one time, that is, four polarization sub-images of a target can be obtained through one-time shooting of a camera, and three-dimensional reconstruction is carried out in real time; the heat dissipation assembly can achieve on-orbit low-temperature storage and effective work of the polarization super-lens camera.

The utility model relates to the technical field of shot blasting machine components, in particular to an efficient discharging auxiliary matching structure of a shot blasting machine. According to the technical scheme, the discharging device comprises a main body matched discharging base, a cylindrical installation fastening connecting hole is formed in the center of the upper end of the main body matched discharging base, and a cylindrical main body discharging matched groove is formed in the position, located on the outer side of the installation fastening connecting hole, of the upper end of the main body matched discharging base; an inverted-cone-shaped matched guiding safety groove is formed in the edge of the outer side of the main body discharging matched groove, and fan-shaped reinforcing safety matched plates which are integrally formed and evenly distributed in the circumferential direction are arranged at the position, close to the upper end, of the outer side of the main body matched discharging base. The steel shot conveying device has the advantages that heat on steel shots can be effectively transmitted and dissipated in the conveying matching process through the structure, the steel shot products do not need to be conveyed after being completely cooled, the time consumed by cooling in the production process can be effectively shortened, and the machining cost in the production process is reduced.