4results about How to "Reduce erosion rate" patented technology

This utility model discloses an anti-erosion and anti-floating stabilizer for continuous casting tundishes, relating to the field of tundish refractory materials technology. It includes a stabilizer body with a circular inner cavity in the center. The inner cavity has stepped sides with a bottom-up design. A ring-shaped stabilizing protrusion is embedded at the corner of each step. Several evenly arranged turbulence blocks are fixedly mounted on the top surface of the steps and are fixedly connected to the stabilizing protrusions. An installation groove is provided at the bottom of the steps, and an impact plate is fixed within the groove. A first anti-floating protrusion and a second anti-floating protrusion are fixedly mounted at the lower part of the stabilizer body, with the second anti-floating protrusion positioned below the first. This utility model is rationally designed, effectively preventing erosion and damage to the sidewalls and bottom of the stabilizer caused by molten steel impact. It improves the overall stability and anti-erosion performance of the stabilizer structure, extends its service life, and ensures safe production in continuous casting tundishes.

This utility model discloses a coalbed methane collection device, including a tank support base mounted on the ground. A gas gathering and transportation tank is installed on the tank support base. A gas gathering pipe partially extending into the ground is connected below the gas gathering and transportation tank. A first tapered section is arranged on the gas gathering and transportation pipe near the gas gathering and transportation tank. A first throat stabilizing section is connected below the first tapered section. A first tapered amplifying and pressurizing section is connected below the first throat stabilizing section. A second tapered section is connected to the first tapered section. A second throat stabilizing section is connected below the second tapered section. A second tapered amplifying and pressurizing section is connected to the second throat stabilizing section. The above structure abandons the straight pipe or single tapered pipe structure and adopts a Venturi-like unit with a gentler pressure drop gradient. Multiple Venturi-like units are integrated in series, allowing the gas flow to pass through multiple throat stabilizing sections in stages for accelerated flow, effectively suppressing sudden changes in local pressure drop.

This utility model relates to the technical field of boiler degassing, and in particular to a degassing assembly and its electrode boiler, comprising: a degassing vessel, supported on the ground, with a degassing chamber inside and an outlet connected to the top of the degassing vessel; a filtration mechanism, connected to the outlet of the degassing vessel, for filtering the gas; wherein the degassing vessel includes: a heating cylinder, disposed inside the degassing vessel, with multiple connecting rods arranged circumferentially on the outer wall of the heating cylinder, the heating cylinder being fixedly installed inside the degassing vessel via the connecting rods; a water pump, fixedly installed on the outer wall of the degassing vessel, the water pump input end for drawing in boiler water, and the water pump output end connected to a water supply pipe; and an annular spray pipe, disposed inside the degassing vessel, connected to the water supply pipe, with multiple spray nozzles arranged annularly on the inner wall of the annular spray pipe, each spray nozzle being located at the top of the heating cylinder.

This invention, entitled "A High-Transmittance Polyimide Film Main Material, Film Coating, Composite Film Material, and Their Preparation and Application," belongs to the field of materials technology. Addressing the problems of easy surface cracking and significant degradation of optical performance after radiation in existing transparent anti-ionic oxygen polyimide films, this invention provides a polyimide film with high optical transparency and strong anti-ionic oxygen erosion resistance. The key technical point is a high-transmittance polyimide film main material, comprising an aromatic phosphorus-containing diamine, an alicyclic dianhydride monomer, and an organic solvent; the aromatic phosphorus-containing diamine is 2,5-bis[(4-aminophenoxy)phenyl]diphenyloxyphosphine; the alicyclic dianhydride monomer is selected from at least one of 1,2,3,4-cyclobutanetetracarboxylic dianhydride, 1,3-dimethyl-cyclobutane-1,2,3,4-tetracarboxylic dianhydride, and 1,2,3,4-tetramethyl-1,2,3,4-cyclobutanetetracarboxylic dianhydride.