8results about How to "Safe and controllable operation" patented technology

This invention provides a method for cleaning ultra-deepwater long-distance gas-liquid mixed transport subsea pipelines, belonging to the field of marine oil and gas engineering and flow safety assurance technology. The method includes the following steps: accurate data analysis and operational condition simulation; calculation of the minimum ethylene glycol injection volume required for each stage; prediction of the maximum slug flow rate and its impact on the platform separator and trap; determination of the specific duration, gas volume control range, and gas source switching node for each cleaning stage based on the simulation results, while developing an emergency plan; sequential execution of the four stages: production gas carrying liquid stage, recirculating gas purging and carrying liquid stage, recirculating gas cleaning stage, and production gas cleaning stage; and depressurization via a balancing valve, removal of the cleaning tool, and product analysis. This invention achieves controllable risks, reduced time, and minimized production loss in pipeline cleaning operations through a multi-stage gas source switching strategy, integrated real-time online simulation and early warning technology, and optimized slug flow control and ball launch / receiver procedures.

This invention discloses an automated dispensing device for injectable drugs, belonging to the field of medical device automation technology. The device includes a pluggable drug storage compartment and a dispensing base. A bottle guide ramp and a conical multi-position screw feeder work together to achieve self-alignment and precise bottle pickup. A dynamic locking mechanism automatically locks / unlocks the transmission system during insertion and removal to ensure safety. An RFID system verifies the drug type to prevent errors. Electromechanical dual overload protection prevents damage to the equipment and bottles. Photoelectric closed-loop counting and intelligent empty detection ensure accurate and continuous dispensing. This invention offers accurate and reliable dispensing, safe operation, and a high degree of intelligence.

The application provides an air conditioning system, an air conditioner and a control method. The air conditioning system comprises a first refrigeration system and a second refrigeration system, the first refrigeration system and the second refrigeration system are arranged in parallel, a regulating condenser is arranged in parallel with the first refrigeration system and the second refrigeration system, the regulating condenser is communicated with a refrigerant storage device, and the first refrigeration system and the second refrigeration system are respectively communicated with the refrigerant storage device; the refrigerant storage device respectively stores the refrigerant from the first refrigeration system, the second refrigeration system and the regulating condenser, or respectively releases the refrigerant into the first refrigeration system, the second refrigeration system and the regulating condenser. The regulating condenser and the refrigerant storage device are added to the original air conditioning system, the refrigerant storage device can regulate the first refrigeration system and the second refrigeration system with different cold energy requirements respectively, the air conditioning system is effectively protected, the system pressure is regulated, and the system load is prevented from being too heavy.

The invention provides a boiler device for waste heat recovery, which relates to the field of waste heat recovery and comprises a boiler body, and a tube bundle heat exchange mechanism and a rotary heat tube mechanism which are connected in sequence. The tube bundle heat exchange mechanism is provided with a first tube bundle arranged in the flue gas channel; a smoke inlet of the rotating heat pipe mechanism is communicated with a smoke outlet of the pipe bundle heat exchange mechanism, and a rotating shaft with a second pipe bundle and a built-in heat pipe is arranged in the rotating heat pipe mechanism. And the flue gas backflow mechanism communicates the flue gas outlet of the rotary heat pipe mechanism with the hearth through a backflow pipeline and a fan. The self-cleaning mechanism comprises a flow guide plate arranged on the inner wall of the shell, a scraping plate which is fixed on the rotating shaft and is in contact with the flow guide plate, and an ash bucket at the bottom. Efficient and lasting waste heat recovery is achieved through heat exchange combination of the rotary heat pipe and the pipe bundle; the self-cleaning mechanism automatically removes dust; the flue gas backflow mechanism regulates and controls low-temperature flue gas to return to the hearth, and deep energy recovery is achieved. The system integrates monitoring and safety mechanisms, operation controllability and stability are guaranteed, and the heat efficiency of the boiler is integrally improved.

This invention belongs to the field of heterocyclic pharmaceutical intermediate synthesis technology, specifically disclosing a method for synthesizing N-alkoxycarbonyl-4-amino-4-alkylpiperidine. Using N-alkoxycarbonylpiperidine-4-carboxylate as the starting material, the target product is obtained through a four-step reaction involving alkylation, hydrolysis, amidation, and Hoffmann rearrangement. This invention, through the adaptation and control of the substrate, synthetic route, and synthetic conditions, can solve the problems existing in the substrate-based synthetic route, thereby improving product yield and quality. The method described in this invention achieves a total yield of ≥60% of the target product, with key impurities all <0.1%. The process is safe and controllable, suitable for both laboratory-scale and industrial-scale production.

The utility model discloses an automobile engine cover coating electrophoresis jig, and relates to the technical field of automobile manufacturing, the automobile engine cover coating electrophoresis jig comprises a rack, a locking mechanism and a first limiting mechanism, the rack is provided with a mounting cavity through which at least partial structure of a water tank cross beam passes, the locking mechanism comprises a first locking piece, a second locking piece and a connecting piece, the first locking piece and the second locking piece are both connected with the connecting piece, and the first limiting mechanism can limit the connecting piece from moving to the rotating position from the locking position. According to the technical scheme, a double-locking structure of the first locking piece and the second locking piece is adopted, the first locking piece and the second locking piece act on the engine cover and the water tank cross beam respectively in the locking position state, a stable stress system is formed, the engine cover can be kept at a fixed opening angle, and the service life of the engine cover is prolonged. The engine cover is effectively prevented from shaking or being accidentally opened in the electrophoresis process, the situation that an inner plate coating is uneven due to the fact that the angle is unstable is avoided, the consistency of coating quality is guaranteed, and the anti-rust performance is improved.

This invention relates to the field of harmless treatment technology for oily sludge, specifically to a method for preparing carbon quantum dots from oily sludge. Conventional methods for preparing carbon quantum dots from oily sludge have limitations in yield and fluorescence intensity. To address these issues, this invention provides a method for preparing carbon quantum dots from oily sludge. Considering the complex composition of oily sludge, this invention designs a multi-stage purification process chain of "ultrasonic extraction—water washing—Soxhlet extraction—acidification treatment." Each step works synergistically, purifying the sludge step by step to ultimately obtain a high-purity refined organic carbon source. The refined organic carbon source removes impurities through gentle solvent extraction and acid washing, maximizing the preservation of the organic carbon source's chemical activity and structural integrity. In the hydrothermal reaction, it can be effectively converted into carbon quantum dots, avoiding carbon source loss or activity reduction due to over-processing, thus further improving the yield and fluorescence intensity of carbon quantum dots.

The application belongs to the technical field of synthesis of heterocyclic medicinal intermediates, and specifically discloses a synthesis method of N-alkoxycarbonyl-4-amino-4-alkylpiperidine, which takes N-alkoxycarbonylpiperidine-4-carboxylate as a starting material, and obtains a target product through four steps of alkylation, hydrolysis, amidation and Hofmann rearrangement. Through the adaptation control of the substrate, the synthesis line and the synthesis conditions, the application can solve the problems existing in the synthesis line of the substrate, so that the yield of the product can be improved, and the quality of the product can be improved. The total yield of the target product is greater than or equal to 60%, the key impurities are all less than 0.1%, the process is safe and controllable, and is suitable for laboratory small test and industrial amplification.