7results about How to "Reduce dead zone" patented technology

This invention discloses a cooling device for a natural ester insulating oil power transformer. An oil conservator is connected to one side of the top of the outer casing, and the conservator is connected to the outer casing for oil replenishment. Multiple cooling chambers are formed between the outer casing and multiple sets of transformer windings, with each cooling chamber corresponding to one of the windings. Natural ester insulating oil is filled into the cooling chambers, and the oil conservator is connected to each of the cooling chambers. Multiple heat exchangers are connected to the outer side of the outer casing along the layout direction of the cooling chambers. Oil inlet and outlet pipes are connected between the heat exchangers and the cooling chambers, respectively. A refrigeration unit is also connected to the outer sides of the outer casing and adjacent heat exchangers. The medium inlet and outlet of the refrigeration unit are both connected to the heat exchangers. The advantages of this invention compared to existing technologies are: it provides a cooling device for a natural ester insulating oil power transformer that is convenient for zoned use, allows for precise temperature control, and is highly targeted.

This utility model discloses an ultrasonic cleaning machine, including an ultrasonic cleaning machine body and a water circulation assembly disposed within the ultrasonic cleaning machine body. The water circulation assembly includes multiple water circulation structures spaced apart along the width direction within the ultrasonic cleaning machine body. Each water circulation structure includes two water flow driving parts correspondingly arranged on two inner walls facing each other along the length direction within the ultrasonic cleaning machine body. The two water flow driving parts cooperate to make the water within the ultrasonic cleaning machine body flow in a ring. Compared with the prior art, this makes the ultrasonic waves evenly distributed within the ultrasonic cleaning machine body, improving the cleaning effect on the workpiece.

This invention provides a prototype infrared detector with integrated metalens, its fabrication method, and an optoelectronic instrument. The prototype infrared detector with integrated metalens, its fabrication method, and the optoelectronic instrument of this invention offer an effective and feasible solution for the industrialization of infrared detectors with integrated metalens, and are beneficial to the development of optoelectronic devices. The prototype infrared detector with integrated metalens of this invention has the advantages of miniaturization and high performance, and is expected to be widely used in scenarios such as integrated miniaturized infrared detection and infrared detection in low-light environments.

The invention relates to the technical field of distillation separation devices, and particularly discloses a m-phenylenediamine distillation device which comprises a rectifying still, the rectifying still comprises a still body located on the lower portion and a rectifying section located on the upper portion, the still body and the rectifying section are fixedly connected, the still body is provided with a double-layer jacket, and the double-layer jacket comprises an outer-layer heat tracing cavity and an inner-layer reaction cavity; the device further comprises a pressure reduction assembly, a temperature control assembly and a backflow optimization assembly. Through mechanical linkage, three functions of reduced pressure rectification, precise temperature control and material flow enhancement are deeply integrated into an integrated structure, wall scraping and condensation prevention are driven by pressure, heating is directly regulated and controlled by temperature deformation, stirring and flow guiding are synchronously realized by power of a vacuum pump, and the reliability of equipment under harsh working conditions is remarkably improved; meanwhile, through structure optimization and energy reuse, the two technical bottlenecks of easiness in decomposition and easiness in solidification in the m-phenylenediamine rectification process are efficiently overcome, and the unification of safety, stability, energy conservation and low maintenance cost is realized.

The utility model provides a kind of swing type vehicle blow-drying device, comprising: portal frame formed by side column and top crossbeam, and fan assembly fixed to top crossbeam, top crossbeam is rotationally supported on side column top end, blow-drying device further has drive mechanism for driving top crossbeam rotation and limiting mechanism for limiting the rotation angle of top crossbeam fixed to side column, limiting mechanism has limiting piece for resisting top crossbeam to limit the rotation angle of top crossbeam.The vehicle blow-drying device of the utility model is simple in structure, and practical, fan assembly is swung and blown along the direction of incoming vehicle by drive mechanism and limiting mechanism, so that fan assembly drives vehicle surface water stain towards vehicle tail in swinging process, and the blow-drying effect is good, which is conducive to improving blow-drying efficiency.

The utility model relates to the technical field of hydraulic compressors, in particular to a hydraulic compressor high-pressure air cylinder beneficial to heat dissipation. The cylinder barrel comprises an inner-layer thin-wall cylinder barrel and an outer-layer thin-wall cylinder barrel, the inner-layer thin-wall cylinder barrel and the outer-layer thin-wall cylinder barrel are connected in an interference fit mode, a guide ring and a plurality of piston spring seals are arranged between the air piston and the inner-layer thin-wall cylinder barrel, openings of the piston spring seals face the high-pressure side, and an end cover spring seal is arranged between the front end cover and the inner-layer thin-wall cylinder barrel. An opening of the end cover spring seal faces one side of the air piston, a plurality of annular flow guide plates are arranged in the water jacket and located between the water jacket and the outer-layer thin-wall cylinder barrel to form a partition, water passing holes are formed in the flow guide plates, and the water passing holes of the adjacent flow guide plates are arranged in an up-down staggered mode. The stress generated by the interference fit not only can improve the capability of resisting external force, but also is beneficial to heat dissipation, so that heat can be conducted away by cooling water on the periphery of the cylinder barrel as soon as possible, the indicating work in the compression process is reduced, and the radial size of the whole air cylinder can be saved.