6results about How to "Reduce flow dead zone" patented technology

The invention provides a mixed flow heat exchange device for outputting hot water, which is characterized in that the connecting line of the vertexes of the section of a jet pipe is a square, a pipe wall is formed between the adjacent vertexes of the square, the pipe wall is bent, the bending direction of the bend faces the center of the square, and jet holes for jetting from the inside of the jet pipe to the outside of the jet pipe are formed in the pipe wall. The invention provides a heat exchange device adopting a novel square jet pipe, so that the mixing heat exchange effect of two fluids is better and more uniform, and the heat exchange efficiency is improved.

The tube-fin heat exchanger provided by this invention includes multiple stacked straight fins and multiple heat exchange tubes that penetrate the straight fins and are tightly connected to them. The outer wall of the heat exchange tubes is provided with a spiral wave structure. The peaks and troughs of this structure form micro-scale guide grooves. By making the depth of the guide grooves less than or equal to the laminar sublayer thickness of the outer wall of the heat exchange tubes, arc-shaped conical protrusions are set on the straight fins around the heat exchange tubes. The openings of the protrusions face away from the heat exchange tubes, with one end of the protrusion being a pointed tip pointing in the direction of the incoming airflow and the other end being a wide tail pointing towards the outer wall of the heat exchange tubes. In use, the pointed tip can cut the airflow between the straight fins, and the wide tail induces the formation of a longitudinal vortex that guides the heat exchange tubes to the outer wall. The longitudinal vortex scours along the guide grooves and eventually detaches from the leeward side of the heat exchange tubes. This can reduce drag, destroy the boundary layer on the surface of the straight fins and the outer wall of the heat exchange tubes, increase the flow velocity on the leeward side of the heat exchange tubes, reduce the flow dead zone, and improve the heat exchange effect.

The invention discloses a multi-zone carbon capture device which comprises an inlet flue section, a tower body and an outlet flue section, and the interior of the tower body is divided into a plurality of zones which operate independently through at least one partition plate; the inlet flue section is configured to selectively introduce flue gas into at least one subarea; the outlet flue section is configured to selectively exhaust flue gas from at least one of the partitions. Compared with a circular tower, the internal support length of the multi-partition tower type is shorter, and the multi-partition tower type has lower deflection during bearing. Compared with a square tower, the multi-partition tower type flue gas has better flow field distribution. Along with the change of the flue gas amount, the number of the working partitions can be dynamically adjusted, so that efficient utilization of resources is achieved.

The utility model provides a kind of heat storage medium electric heating device, including shell, input port for flowing into low temperature heat storage medium and output port for flowing out high temperature heat storage medium are provided on shell, input port and output port are located at the both ends of shell respectively;Multiple electric heating tube bundles and multiple baffles are arranged in shell, multiple baffles are sequentially spaced apart along the direction of input port to output port, multiple baffles are sequentially rotated along the same rotation axis, and multiple baffles are all heterotropic baffle, or, part is heterotropic baffle, another part is homotropic baffle, so that multiple baffles are sequentially arranged structure, to realize that heat storage medium generates quasi-spiral flow in shell interior.The scheme can promote the forced convection circulation of high temperature heat storage medium and low temperature heat storage medium, optimize the temperature distribution of heat storage medium in heating device, to solve the problems of uneven temperature, local overheating or insufficient heating etc. in the heating process of traditional heat storage medium electric heater.

The application belongs to the technical field of heat exchange equipment, and specifically discloses a modular quick-mount air cooler, which comprises two mounting plates, liquid inlet shells and liquid outlet shells fixedly connected to the opposite sides of the two mounting plates respectively, a liquid inlet pipe communicated with the top of the liquid inlet shell, a liquid outlet pipe communicated with the top of the liquid outlet shell, a limiting assembly arranged on the surface of the liquid inlet shell and the liquid outlet shell, and a heat exchange assembly arranged between the two mounting plates. Through the limiting assembly and the heat exchange assembly, the heat exchange pipe can be quickly mounted and dismounted without being dismounted as a whole, and can be dismounted and replaced individually according to replacement requirements. The mounting and dismounting mode is simple, and a single heat exchange pipe serves as an independent module and can be dismounted and replaced individually. When a single heat exchange pipe is damaged or blocked, the whole pipe bundle or large components do not need to be disassembled, so that the maintenance workload, downtime and replacement cost are significantly reduced.

A method for preparing a coarse-grained ring-free 6061 aluminum alloy rod belongs to the technical field of aluminum alloy processing and manufacturing. It solves the problem of coarse-grained ring in the production of existing 6061 aluminum alloy rods, which causes uneven mechanical properties, poor fatigue resistance and anodic oxidation appearance defects. The method comprises the following steps: precise alloy component adjustment, low-temperature casting of round ingots, homogenization annealing, temperature-controlled low-speed hot extrusion forming with a round arc working belt mold, high-temperature online quenching, tensile straightening and low-temperature artificial aging. The present application effectively inhibits the abnormal recrystallization and growth of surface grains during the extrusion process, completely eliminates the coarse-grained ring defects of the rod section, and the obtained product has uniform and fine grain structure, stable and excellent mechanical properties, the tensile strength is not less than 310 MPa, the yield strength is not less than 270 MPa, and the elongation after fracture is not less than 12%. The product is suitable for automobile structural parts, rail transit accessories, high-end mechanical equipment and other material scenes, the process is suitable for industrialized batch production, and the production stability is strong and the application range is wide.