40results about How to "High-pressure resistance" patented technology

The invention relates to a large-flow ultraviolet fluid sterilizer comprising at least one ultraviolet sterilizing module and an installing and fixing device of the ultraviolet sterilizing module, wherein each ultraviolet sterilizing module at least comprises an ultraviolet lighting tube, a main body of the installing and fixing device is a pipeline which can be passed by sterilized fluid, a plurality of ultraviolet sterilizing module installing holes are arranged on the wall of the pipeline, baffle plates which extend to the center direction of the end surface from the periphery of the end surface are arranged on one or two end surfaces of the installing and fixing device, and water through holes which are passed by the sterilized fluid are arranged on the end surfaces of the baffle plates. The large-flow ultraviolet fluid sterilizer can be widely used for locations which need to sterilize fluid, such as water plants, pharmaceutical factories, food factories, beverage factories, and the like and can be also used for other fluid sterilization systems which need to be sterilized.

Both a column having high-pressure resistance and capable of performing high-speed separation and analysis even with a small flow rate and a liquid chromatograph apparatus using the column are provided. A separation column according to the present invention has a monolithic rod being arranged in the center, being made of a porous material, and having a circular cross section, a filler layer arranged such that it encircles a circumferential surface of the monolithic rod, and a cylindrical support medium arranged outside the filler layer. The filler layer is formed by filling a tube-like gap between the monolithic rod and the support medium with particles or beads.

A U-bend pipe type heat exchanger includes: a heat exchanger main body surrounded by a front side plate, a back side plate, a left side plate, and a right side plate, and having open upper and lower portions through which a heat source passes; a plurality of U-bend pipes inserted between the left side plate and the right side plate, each of the plurality of U-bend pipes including two heat exchange pipes arranged in parallel with each other and a U-shaped pipe connecting one end portions of the two heat exchange pipes; and a plurality of water jackets attached to at least one of outward surfaces of the left side plate and the right side plate, and connecting open end portions of two adjacent heat exchange pipes such that a low-temperature water circulates along the plurality of U-bend pipes.

The invention discloses a combined cylinder body manufacturing method for an aluminum-alloy liquefied petroleum gas cylinder. The method comprises the steps of blank heating, cylinder body extruding and cylinder body welding. The method particularly comprises the steps that an aluminum-alloy round-rod ingot blank is cut into cylinder body blanks, and then the cylinder body blanks are put into a heating furnace for heating; and the heated cylinder body blanks are put into a mold cavity of an extruding machine to be extruded and formed into finished cylinder body products, and the finished cylinder body products subjected to extruding forming are spliced and welded into a whole, wherein the height of the mold cavity is h, and h is a positive number and larger than the height of a pressure head. According to the combined cylinder body manufacturing method for the aluminum-alloy liquefied petroleum gas cylinder, metal can flow uniformly in the extruding process; compared with parts manufactured through a traditional punching method, the size precision is high, cylinder bodies with thinner thicknesses can be manufactured, the interior tissue of the cylinder bodies is more compact, the self weight of each cylinder body is greatly reduced, the tolerance pressure is higher than that of a traditional liquefied petroleum gas cylinder, the cylinder body performance is better compared witha traditional punching manner, and the safety is further improved. Compared with the prior art, the manufacturing procedures of the gas cylinders are reduced, the production and processing efficiencyis improved, and the production cost is reduced.