3results about How to "Low connection temperature" patented technology

The invention provides a micro-channel heat exchange device based on high-entropy alloy connection and a preparation method and application of the micro-channel heat exchange device. According to the micro-channel heat exchange device, the connection quality of the joints of all layers of the micro-channel heat exchange device is improved, the tensile strength, the corrosion resistance and the hydrogen embrittlement resistance are improved, and the compactness, the corrosion resistance and the hydrogen embrittlement resistance of the fluid contact surface in the micro-channel heat exchange device are improved; the strength, the corrosion resistance and the hydrogen embrittlement resistance of the micro-channel heat exchange device are integrally improved, so that the micro-channel heat exchange device based on high-entropy alloy connection is suitable for places with high requirements for the space utilization rate and the reliability such as a hydrogen refueling station, and is particularly applied as a micro-channel heat exchanger of a hydrogen cooling system of the hydrogen refueling station.

The invention relates to a flash connection method of a ceramic insulator. The method comprises the following steps of: butting a joint surface of the ceramic insulator and the ceramic insulator coated with conductive colloid; the conducting rings abut against the joint parts of the ceramic insulators respectively; extra-high voltage or extra-high current is applied to the conducting ring, and the conducting colloid is forced to conduct electricity and flash to be connected with the ceramic insulators; and cutting off the power supply, and disassembling the conducting ring after the ceramic insulator is cooled to room temperature. The conducting ring is close to the joint part of the two insulators, and the temperature of the conducting colloid on the joint surface of the insulators is increased through the ultrahigh voltage or ultrahigh current of the super capacitor, so that the mass transfer effect of the insulators on the two sides is realized, the instantaneous flash connection is realized, the connection temperature can be obviously reduced, and the connection time can be obviously shortened; by adopting the method disclosed by the invention, the two ceramic insulators can be connected within second-level time, the energy consumption can be reduced by adopting the super capacitor, and the method disclosed by the invention can be widely applied to the field of oversized electric porcelain.

A flash connection device of a ceramic insulator is characterized in that a conducting ring device, a slide rheostat and a super capacitor are connected through a switch K and a to form an external discharge circuit, and meanwhile, the conducting ring device, an infrared thermal imager and a data acquisition and analysis device form a feedback circuit to adjust circuit voltage; the direct-current power supply, the ampere meter, the fixed-value resistor, the super capacitor and the voltmeter connected in parallel with the super capacitor are connected with the b position through the switch k to form an internal charging circuit of the super capacitor; an infrared thermal imager and a data acquisition and analysis device are arranged, so that the temperature change and shrinkage condition of the joint of the ceramic insulator in each stage of flash connection can be mastered in real time, and the voltage of the conducting ring device can be conveniently controlled by adjusting a slide rheostat; according to the invention, the voltage required by the flash connection technology can be more accurately controlled, and a brand new device is provided for the flash connection of the ceramic insulator.