16 results about "Jet cooling" patented technology

The present application relates to the technical field of rail production process, in particular to a production method for improving wear resistance of channel rail for tram. After universal rolling, compressed air is applied to the channel rail for forced cooling in parts. In the first stage, supersonic air jet cooling is applied to the rail head tread, rail head running edge, rail head left side, rail lip and rail bottom to control the cooling speed of each part. In the second stage, supersonic air jet cooling is continuously applied to each part of the rail to control the cooling speed of each part. In the third stage, subsonic air jet cooling is applied to each part of the rail to control the cooling speed of each part, and then the rail is naturally cooled in air. The quenching effect of the channel rail tread and running edge is improved, the pearlite interlamellar spacing is refined, the rail strength and hardness are improved, and the channel rail has good wear resistance.

This invention provides a solar-powered full-spectrum frequency-division thermo-electric combined-drive air conditioning system and its control method, belonging to the field of solar heat pumps. It addresses the problems of existing solar-powered jet-compression combined refrigeration systems, which cannot effectively utilize all wavelengths of solar energy, suffer from intermittent instability during power supply, and exhibit low cooling efficiency due to excessively high compression ratios under high temperature difference conditions. During conventional cooling, the system allows selection of single-jet cooling, single-compression cooling, jet-compression combined cooling, or dual-jet-compression combined cooling based on daytime or nighttime conditions and cooling requirements, achieving stable all-weather air conditioning while saving energy. In addition to the conventional cooling mode, a dual-jet-compression cooling mode can be operated to achieve high temperature difference cooling while maintaining a constant compression ratio. It fully utilizes solar thermo-electricity for self-generation and consumption, enabling switching between jet and compression air conditioning modes to ensure all-weather air conditioning needs while achieving energy conservation and emission reduction.

The application relates to the technical field of power grids, in particular to a converter cabinet structure which comprises a cabinet body, a plurality of accommodation spaces are separated in the cabinet body; a first accommodation space is separated into an upper heat dissipation area and a lower heat dissipation area which are stacked in an up-down mode by a horizontal partition plate; a plurality of flow guide plates which are parallel to each other and are arranged in the transverse direction of the cabinet body, the flow guide plates and the horizontal partition plate and the top plate, the front wall and the side wall of the first accommodation space jointly define a plurality of strip-shaped air ducts, through the strip-shaped air ducts which change in the transverse direction and the cooperation of the shunt flow guide structure and the flow leakage gap design, the accurate matching of the heat dissipation resources and the heat source density is realized, the turbulence and the heat dissipation dead zone in the wide cavity can be effectively eliminated while ensuring that the mass flow deviation of each air duct is less than 8%, and the core area temperature difference is reduced; on the basis of improving the functional integration degree of the unit space, the upper and lower layers are combined with the independent heat dissipation paths, the high-opening-rate pulling module tray with the jet cooling effect and the parallel architecture of the multiple accommodation spaces.

This invention discloses an underwater cooling process that enhances the coupling properties of thermoplastic composites, belonging to the field of composite material processing technology. For thermoplastic composite parts that have just been removed from the mold and are in a high-temperature state, a specific cooling solution is used for jet cooling through an optimized nozzle system. The core of this process lies in the synergistic effect of forced convection, phase change cooling, and dynamic heat conduction. This rapidly reduces the overall temperature of the part (suppressing the formation of large-sized spherulites) while mitigating the temperature gradient in the interfacial region, promoting the full diffusion and entanglement of polymer chains to the surface of the reinforcing fibers within the viscous flow window, thereby optimizing interfacial bonding. By balancing crystallinity and residual stress, this process can increase the interfacial shear strength (IFSS) of the composite material by 15-20%.

The application relates to the technical field of battery cooling, in particular to a lithium battery cooling device and a use method. The lithium battery cooling device comprises a cooling shell, the cooling shell comprises an air inlet cavity, an elastic air storage cavity and an air outlet cavity which are communicated, the air inlet cavity is provided with an air inlet, the air outlet cavity is provided with an air outlet, the air outlet cavity and the air inlet cavity are respectively arranged at two ends of the elastic air storage cavity, and the air inlet cavity, the elastic air storage cavity and the air outlet cavity form a containing space. The application provides a lithium battery cooling device and a use method, so as to solve the problem that the existing jet flow cooling system still has low system integration, thereby causing a complex structure.

This invention discloses a method and system for controlling the protective atmosphere and cooling in a vertical furnace to improve the gloss of stainless steel, relating to the field of metal material heat treatment technology. The method is applied to a vertical furnace having a heating section, a soaking section, a slow cooling section, and a rapid cooling section. It includes: introducing a hydrogen-containing first protective atmosphere in the heating and soaking sections; introducing hydrocarbons in the slow cooling section to form a second protective atmosphere to repair the surface of the stainless steel strip; stopping the introduction of the aforementioned atmosphere in the rapid cooling section and switching to the introduction of a non-oxidizing gas for high-speed jet cooling; and adjusting the jet parameters of the non-oxidizing gas in real time according to the steel strip specifications and speed during cooling. This invention also discloses a system for implementing this method. This invention solves the problems of low gloss and unstable quality during stainless steel heat treatment, effectively repairs the chromium-depleted layer on the surface, avoids hydrogen embrittlement, and improves product surface quality and production stability.

The utility model relates to a strip steel cooling device, concretely is strip steel circulating injection cooling device, including cooling box, the cooling box both ends are opened respectively and are used for passing the inlet and outlet of strip steel, the cooling box is fixed in the symmetry and is provided with lower guide piece and upper guide piece, and the upper guide piece is located the upper portion of lower guide piece, a plurality of guide rollers are rotationally arranged in the guide piece, the guide roller is used for driving strip steel to move, and the outer wall of guide roller is slidably provided with the limiting ring of limiting different width strip steel, the top center of cooling box is fixedly provided with the liquid storage tank for containing cooling liquid, the bottom of liquid storage tank is fixedly connected with the catheter, and the catheter is located in the cooling box, and the cooling box is provided with the liquid collecting area for collecting cooling liquid, the liquid collecting area collects the cooling liquid after spraying, and the cooling liquid is pumped back to the liquid storage tank through the connecting pipe by the pressure pump, forms the circulation, effectively reduces the cooling liquid consumption, reduces the cost.

The utility model relates to a kind of jet cooling device, comprising: chip fixed base, microstructure cold plate, shunt plate, collecting plate, cover plate and pipeline joint;The upper surface of microstructure cold plate is provided with microstructure rib column and rib column bottom surface covering capillary structure, and microstructure cold plate is sealingly connected with shunt plate;Shunt plate is provided with shunt groove, and shunt plate is provided with jet flow groove, and jet flow groove is cooperated with microstructure cold plate to form jet flow cavity, and microstructure rib column is located in jet flow cavity, and shunt groove is provided with shunt hole and collecting duct arranged in staggered manner;The bottom surface of collecting plate and the upper peripheral edge of shunt plate form shunt cavity, and collecting plate is provided with collecting groove, and the center of collecting groove is provided with shunt duct, and the bottom surface of collecting plate is provided with collecting hole;The bottom surface of cover plate and the upper peripheral edge of collecting plate form collecting cavity, and the top surface center of cover plate is provided with inlet hole to connect shunt duct.Compared with prior art, the utility model has the advantages of high efficiency, uniform temperature, heat dissipation performance, compactness, integration, wide applicability and the like.

The application discloses a heat exchange plate for chip heat dissipation, a jet cooling mechanism and a cooling method thereof. The heat exchange plate is provided with protruding fin units on one side, and the fin units are provided with a plurality of fins arranged around the central flow guide area and extending outward in a diverging manner. The adjacent fins form a diverging flow guide area in communication with the central flow guide area. The cooling mechanism comprises a cover plate, a manifold plate, a jet plate and a fixing plate connected in sequence. The cooling working medium is jetted from the working medium inlet and the jet hole to the central flow guide area, and then flows from the central flow guide area to the diverging flow guide area. After heat exchange, the working medium is discharged from the backflow channel and the working medium outlet. The heat exchange plate changes the impinging flow path of the cooling working medium, guides the impinged cooling working medium to branch off outward along the natural diffusion direction, weakens the stagnation and heat congestion in the central intersection area, avoids the serious heat accumulation and the sharp increase of the temperature gradient, significantly strengthens the local heat exchange efficiency of the cooling mechanism, and realizes more efficient and stable heat transfer under the non-uniform high heat flow condition.

The present invention relates to an air jet cooling device (100) for a housing (48) of a turbine, particularly a housing of a low-pressure turbine (28), the air jet cooling device comprising at least one air supply shroud (120) and at least one cooling manifold (110) intended to be disposed around the housing to be cooled, the cooling manifold or each cooling manifold comprising two cooling tubes (112) disposed on both sides of the shroud, the supply shroud (120) comprising two side walls (125, 126), each side wall comprising an air outlet orifice (127), each orifice having a main axis and being configured and sized to receive an associated cooling tube, the cooling device comprising a fastening system intended to secure the cooling tubes to the housing, characterized in that each cooling tube is secured to the fastening system and is translatably movable along the main axis (P) within the associated orifice.

This invention discloses an automatic processing and connection device for straight threaded sleeves of reinforcing bars, including a rib stripping and rolling machine body, a jet cooling and chip removal component, a double-layer counter-current heat exchange component, and an induction coaxial engagement drive component. A movable frame is slidably installed on the top of the rib stripping and rolling machine body, and the rib stripping drive component is fixedly connected to the upper surface of the movable frame. A rib stripping cutter disc is installed on the output shaft of the rib stripping drive component. The jet cooling and chip removal component is installed on the side of the rib stripping and rolling machine body. The double-layer counter-current heat exchange component is installed inside the rib stripping and rolling machine body, and the induction coaxial engagement drive component is installed inside the double-layer counter-current heat exchange component. This invention constructs a low-temperature jet direct injection cooling system through the cooperation of jet pipe, high-pressure nozzle, delivery pipe, lubricating oil tank, lubricating oil pipe, and semiconductor cooling chip, avoiding the defects of spindle thermal expansion and steel material softening caused by the inability to dissipate heat in time due to continuous and severe plastic deformation.

A zinc-aluminum-magnesium coated steel plate, comprising a cold-rolled substrate and a coating coated on the cold-rolled substrate, the coating containing Zn and the following chemical elements in percentage by mass: 1-30.0% of Al, 1-10.0% of Mg, 0.01-0.5% of Ca, 0.01-0.5% of Sr, 0<B≤0.05%, 0<Cr≤0.3%, 0.001-0.3% of Ti, and 0.001-1.0% of Ni. The manufacturing method for the zinc-aluminum-magnesium coated steel plate comprises the steps: performing continuous annealing and hot dipping on a cold-rolled substrate; using jet cooling; heating; air-cooling strip steel to below 320℃; further cooling the strip steel to below 100℃, and then cooling in a quenching tank; and leveling and straightening.

This invention discloses a ceramic sphere thermal shock testing device and method based on induction heating, belonging to the field of high-temperature material performance testing. The device includes a sealed test chamber, a high-frequency induction heating system, a ceramic sphere support assembly, an inert atmosphere control system, a high-pressure helium annular jet rapid cooling system, and a temperature measurement and control system. High-frequency induction heating achieves rapid heating to 1500-2000℃ within 1-5 seconds, combined with annular helium jet cooling to achieve millisecond-level cooling within 10-100ms, accurately simulating extreme thermal shock conditions. The test method covers sample preparation, inert atmosphere establishment, rapid heating and cooling, and post-thermal shock testing. This device and method solve the problems of slow heating, difficult cooling boundary control, and unsuitability for spherical samples in traditional tests. It offers good repeatability and wide applicability, providing reliable support for evaluating the thermal shock resistance of silicon nitride, zirconium oxide, and other ceramic spheres.

This invention relates to a production method for improving the straightness of rail ends after online heat treatment. After rolling, the rail enters an online heat treatment unit for cooling. The cooling process is divided into three stages: In the first stage, the rail is accelerated by supersonic jet cooling. When the rail head surface cools to 540℃~580℃ and the rail base surface cools to 600℃~650℃, it enters the second cooling stage. In the second stage, the rail continues to be accelerated cooled. When the rail head surface cools to 500℃~520℃ and the rail base surface cools to 560℃~600℃, it enters the third cooling stage. In the third stage, the rail is slowly cooled by subsonic jet cooling. When the rail head surface cools to 460℃~480℃ and the rail base surface cools to 500℃~520℃, the jet cooling stops, and the rail cools naturally in the air. When the rail temperature reaches 20℃~50℃, it enters a straightening unit for straightening. This invention effectively controls the cross-sectional temperature difference of the rail after heat treatment, improving the straightness of the rail ends.

This invention discloses a flow field control system and method for aero-engine nozzles based on flash ejection and the Coanda effect, belonging to the field of aero-engine propulsion and active defense technology. This invention achieves a circumferentially uniform water mist flash jet by setting a central ejection pipe with a Coanda surface at the center of the nozzle and cooperating with an annular injector. It utilizes the latent heat of vaporization of water to rapidly lower the temperature of the nozzle flow field, achieving near-background ablation of the aircraft's infrared signature. Simultaneously, it can mix with micro-aluminum sheets to form a speed-dependent cold cloud interference field with "strong radar scattering and no infrared temperature difference," completely disabling the data fusion logic of radar / infrared composite guided missiles. More importantly, this invention relies on the Coanda wall-attached ejection effect to entrain the central airflow and compensate for exhaust momentum, solving the fatal flaw of traditional water-jet cooling that inevitably leads to significant thrust loss. This invention can switch between thrust enhancement mode, infrared stealth defense mode, and radar / infrared extreme composite defense mode, realizing a new active air combat defense system that is repeatable, non-consumable, maintains maneuverability, and counters composite guidance, significantly improving the survivability and tactical situational reversal capabilities of fighter jets in complex battlefield environments.

This invention discloses a flame stabilizer with directional fuel impact cooling, comprising a flame stabilizer body, which includes a fuel supply chamber and a jet cooling chamber. The fuel supply chamber and the jet cooling chamber are separated by an open wall surface, which is provided with a plurality of jet impact cooling holes. The jet impact cooling holes connect the corresponding fuel supply chamber and the jet cooling chamber. Fuel in the fuel supply chamber is directed towards the jet cooling chamber through the jet impact cooling holes. The fuel supply chamber is connected to a fuel supply pipe for supplying fuel to the fuel supply chamber. The jet cooling chamber is provided with a plurality of fuel injection holes for spraying fuel out of the jet cooling chamber. The fuel injection holes are located on the side wall surface of the flame stabilizer body. This design eliminates the need for additional cooling air, using only the existing fuel as the cooling medium. It achieves wall cooling while simultaneously increasing fuel temperature, promoting evaporation and mixing, thereby improving combustion efficiency.