5results about How to "Uniform density distribution" patented technology

This invention discloses a microchannel heat exchanger driven by an electrohydrodynamic (EHD) pump, characterized by comprising an EHD pump unit and a microchannel heat exchange unit; the EHD pump unit includes a pair of emitter / receiver electrodes, alternately arranged along the flow direction at the bottom of the microchannel, and several EHD pump units are connected in series to form a multi-stage electrode array; the microchannel heat exchange unit includes a jet port and an array-arranged microchannel; the dielectric liquid generated by the EHD pump is directly sprayed into the microchannel heat exchange region through the jet port; the EHD pump unit and the microchannel heat exchange unit are integrated in the same substrate, so that the electrode arrangement area and the heat exchange channel area form a continuous flow path.

A new structure of catalyst distributor mainly relates to the field of catalytic cracking technology, comprising an outer sleeve body and a spent riser, the outer sleeve body comprises coaxially distributed first sleeve body and second sleeve body, the bottom of the first sleeve body is provided with an annular top plate, the outer edge of the top plate and the top of the second sleeve body are provided with a head, the bottom of the second sleeve body is provided with a fluidization wind ring pipe, the spent riser penetrates through the first sleeve body and the head and then extends into the second sleeve body, a plurality of nozzles are arranged on the head, and the inner surfaces of the top plate, the head and the nozzles are coated with a wear-resistant layer. The catalyst distributor with the structure can make the density of the catalyst uniformly distributed in the distributor, avoid the mixing combustion of carbon monoxide and oxygen in the dense phase bed layer caused by the uneven distribution of the catalyst, and thus cause damage to the equipment of the dilution catalyst bed layer; the catalyst can also effectively resist the continuous erosion of the catalyst, reduce the wear of the distributor and other internal parts, and prolong the service life of the distributor.

The invention discloses a multi-target deposition control method and system, a medium and equipment. The multi-target deposition control method comprises the following steps: acquiring angle parameters between a substrate and a plurality of targets; environmental parameters in the cavity are adjusted to meet preset standards; based on the angle parameters and a preset control strategy, electric fields are applied to the multiple target positions respectively, a uniform composite electric field is formed through superposition, and the substrate is located in the composite electric field; the target position is deposited on the substrate through the electric field to form a film material, and control parameters of the electric field are adjusted based on thickness parameters of the film material until deposition is completed; a plurality of non-parallel target positions are arranged on the outer side of a substrate, an electric field is applied to each target position, a composite electric field with uniform strength is formed at the position of the substrate, and plasma density distribution is uniform, so that the sputtering rate and direction of a target material on the target positions tend to be consistent on the surface of the whole substrate, and the uniformity of film material thickness preparation is ensured; and the electric field is uniformly distributed, so that the target material is uniformly etched, and the utilization rate can be increased from 40-50% to 60-70%.

The invention discloses a high-wettability gradient aperture composite diaphragm and a preparation process thereof. The diaphragm comprises a polyolefin base membrane layer and a synthetic fiber web layer prepared by a spunlace process, the overall thickness of the diaphragm is 8-12 [mu] m, the aperture of one side facing the positive electrode is 30-50 nm, and the aperture of one side facing the negative electrode is 50-100 nm; and the synthetic fiber web layer contains a tannic acid modifier. The tannic acid modified synthetic fiber web layer in the composite diaphragm can provide better wettability for the composite diaphragm, and polar functional groups on the surface of the tannic acid modified synthetic fiber web layer can homogenize lithium ion flow, guide uniform deposition of lithium and inhibit generation of lithium dendrites. The polyolefin layer mainly provides mechanical strength, and forms a gradient aperture structure with the spunlace modified polyethylene layer, so that the uniformity of current density is improved, the uniform deposition of lithium is effectively induced, and the growth of lithium dendrites is reduced.

This invention discloses a pressure testing device, a tobacco slurry preparation system, and its applications. The pressure testing device includes a loading mechanism, an automatic pressing unit, a control system, and a pressure sensing mechanism. The loading mechanism contains loose tobacco material, which is pressed to form tobacco slurries. The automatic pressing unit is connected to the loading mechanism and is driven by the control system to press the loose tobacco material within the loading mechanism. The pressure sensing mechanism measures the pressure exerted on the loose tobacco material during the pressing process. Before preparing samples of loose tobacco with unknown properties, the pressure testing device is used to investigate the control parameters for the tobacco slurry preparation process. Experimental tobacco slurries are obtained by pressing the loose tobacco material using the pressure testing device to determine the sample preparation control parameters for achieving uniform density distribution of the material. Then, using the obtained sample preparation control parameters, a different preparation device is used to obtain tobacco slurries for measuring thermophysical parameters.