3results about How to "Avoid dosage" patented technology

This utility model discloses a cycloalkane dehydrogenation system, belonging to the field of cycloalkane dehydrogenation technology. The cycloalkane dehydrogenation system includes a reaction feed heat exchanger, a steam condensate preheater, a reactor steam preheater, a reaction discharge cooler, a heat transfer medium steam heat exchanger, a dehydrogenation reactor, and a separator. The reaction feed heat exchanger, steam condensate preheater, and reactor steam preheater are sequentially connected to the feed inlet of the dehydrogenation reactor. The product outlet of the dehydrogenation reactor is sequentially connected to the reaction feed heat exchanger, reaction discharge cooler, and separator. The steam condensate outlet of the reactor steam preheater is connected to the steam condensate preheater. The gaseous product outlet of the separator is connected to a circulating hydrogen pipeline. The steam condensate outlet of the heat transfer medium steam heat exchanger is connected to the steam condensate preheater. This cycloalkane dehydrogenation system can extend the lifespan of the heat transfer medium, fully utilize the energy of high-pressure steam, and extend the catalyst lifespan.

This invention discloses a method for manufacturing an electric motorcycle battery pack housing. An integrally extruded aluminum alloy profile is cut and bent to form the main frame structure of the battery pack housing. The profile has two hollow sides, enabling direct bending of the thick-walled sides. This completely eliminates the complex pre-machining and laser welding processes at bends. The hollow structure effectively absorbs and releases stress during bending, preventing cracks and wrinkles. The production process is simplified to "extrusion → cutting → bending → welding," significantly shortening the production cycle. The U-shaped splicing significantly improves the tolerance to bending angle errors, making laser welding easier to align and resulting in more consistent weld penetration. This avoids stress concentration, improves fatigue resistance, and ensures a smooth weld transition without the need for grinding.

The invention discloses a karst-related area interval underpass construction method, and relates to the technical field of tunnel engineering, and the karst-related area interval underpass construction method comprises the following steps: carrying out field classification and improvement treatment on soft rock muck discharged by shield tunneling to obtain aggregate muck which can be directly used for backfilling and fine-grain muck which can be used for preparing grouting slurry; muck improvement slurry is prepared from fine muck, karst cavities on the construction path are pre-filled, and advanced grouting reinforcement is conducted on the stratum of the underpass section; during the period that shield tunneling penetrates through a karst area or penetrates through an existing structure under the karst area, synchronous grouting is conducted through muck improvement grout, and grouting parameters and tunneling parameters are dynamically adjusted according to real-time monitoring data; and after segmental lining is completed, compensation grouting is conducted through muck improved grout, and a stacked grouting supporting system is formed in the surrounding rock. According to the method, the shield muck can be recycled, the grouting material cost is reduced, and the safety and reliability of shield underneath pass construction are ensured.