5results about How to "Efficient preheating" patented technology

This invention discloses an automated processing line for bending and forming aluminum alloy crash beams, comprising a feeding device and a bending and forming device. A feeding conveyor belt transports hollow aluminum alloy profiles through an open opening to a profile support in a heating chamber. Each set of heating resistance wires, driven by a corresponding resistance wire drive cylinder, is inserted into the hollow aluminum alloy profile to heat it. The transfer assembly transports the heated hollow aluminum alloy profile to the bending and forming device. The bending and forming device bends the hollow aluminum alloy profile into an aluminum alloy crash beam. The feeding device not only automatically feeds the profile to the bending and forming device but also efficiently preheats the hollow aluminum alloy profile, thereby improving its plasticity, significantly reducing the bending difficulty of the profile, improving processing accuracy, and ultimately greatly increasing the yield rate of the aluminum alloy crash beams.

This utility model discloses a heat exchange system for a fuel cell and a vehicle thereof. The heat exchange system for the fuel cell includes: a fuel cell stack; a hydrogen heat exchanger connected in parallel with the fuel cell stack; and an intercooler connected in series with the hydrogen heat exchanger, located at the inlet end of the hydrogen heat exchanger. Compressed air from an air compressor is cooled at the intercooler, and coolant is selectively introduced into the fuel cell stack or the intercooler. By connecting the intercooler and the hydrogen heat exchanger in series, efficient preheating of the hydrogen entering the stack can be achieved, reducing the temperature difference between the hydrogen entering the stack, the fuel cell stack temperature, and the air entering the stack. This eliminates the risk of fuel cell flooding caused by water vapor liquefaction in the mixed hydrogen, improving system performance stability. Secondly, it can fully utilize the coolant flow rate, reducing power consumption and improving system efficiency. In addition, it can reduce system piping and valves, minimizing system complexity and cost, and improving system integration and practicality.

The double-effect concentrator comprises a first-effect heater, a first-effect evaporator, a second-effect heater and a second-effect evaporator, a heat exchange box is arranged on one side of the first-effect heater, a feeding pipe is arranged on the side, close to the bottom, of the heat exchange box, and a conveying pipe connected with the first-effect heater is arranged on the side, close to the top, of the heat exchange box; a live steam inlet pipe is fixedly arranged on the first-effect heater, a steam outlet pipe is fixedly arranged at the top of the second-effect evaporator, the steam outlet pipe is connected with the live steam inlet pipe through a steam compressor, a steam conveying pipe is fixedly arranged on the steam outlet pipe, and the steam conveying pipe is connected with the heat exchange box. By means of the structure, secondary steam generated by the second-effect evaporator achieves efficient preheating of feed liquid, the initial temperature difference when the feed liquid enters the first-effect heater is reduced, and live steam consumption is reduced. Meanwhile, secondary steam is pressurized and heated through the steam compressor and then reused to the first-effect heater, heat energy is further recycled, the steam utilization rate is increased, efficient heat energy recycling is achieved, and energy consumption is reduced.

This invention provides an activated carbon thermal circulation regeneration device and process, belonging to the field of activated carbon regeneration technology. It includes an input area, a preheating chamber, a regeneration chamber, and a cooling output area arranged from top to bottom. The input area, preheating chamber, regeneration chamber, and cooling output area are externally supported and fixed by brackets. Evenly distributed guide plates are fixedly connected to the inner wall of the preheating chamber. The guide plates are inclined inside the preheating chamber, and baffles are fixedly connected to the top of the guide plates. This invention, by setting up an input area, preheating chamber, regeneration chamber, and cooling output area connected sequentially from top to bottom, and fixing evenly distributed inclined guide plates and protruding disc-shaped baffles on the inner wall of the preheating chamber, along with through-holes on the baffles, allows saturated activated carbon to be evenly dispersed by the baffles and fall step by step along the channels formed by the guide plates after being added. This extends the residence time of the activated carbon in the preheating chamber, achieving sufficient preheating and orderly transportation of the activated carbon within the preheating chamber.

This utility model discloses a gas-electric co-operated steel melting device. By simultaneously installing a gas heating mechanism and an electric heating mechanism in the steel melting furnace, the surface of the molten steel and the exposed scrap steel can be heated by gas combustion, while electromagnetic induction is used to heat the molten steel. Specifically, the gas burners provide concentrated heating to quickly break through the critical softening temperature of the scrap steel; then, targeted supplementary heating using electromagnetic induction achieves precise melting of the scrap steel. This significantly improves the overall heating and melting efficiency of the scrap steel and greatly reduces energy consumption. The device of this utility model also has the advantages of simple structure, low operating cost, and convenient and quick operation.