5results about How to "Lost fast" patented technology

The utility model relates to the technical field of thermocouples, in particular to an extended thermocouple and a high-temperature vacuum heating furnace, and the extended thermocouple comprises a pipe sleeve and a thermocouple wire. The pipe sleeve comprises a straight section and a first bent section, the first bent section is arranged at one end of the straight section, and a temperature measuring point is arranged at the end point, deviating from the straight section, of the first bent section; and the thermocouple wire is arranged to the temperature measuring point along the straight section and the first bent section. The extended thermocouple and the high-temperature vacuum heating furnace provided by the utility model can effectively increase the length of the thermocouple wire in the temperature measurement container, thereby reducing the too fast heat loss from the temperature measurement point of the thermocouple to the external binding post, enabling the temperature measured by the temperature measurement point to be closer to the actual temperature, and improving the measurement precision of the measurement end of the thermocouple.

The utility model, which relates to the technical field of the electronic circuit, provides a low-power-consumption zero-cross detection circuit comprising an X capacitor energy discharge circuit, a step-down circuit, a half-wave detection circuit and an optocoupler drive circuit. The X capacitor energy discharge circuit discharges energy stored on an X capacitor, adjusts discharge time and serves as signal input and a power supply of the half-wave detection circuit, and the step-down circuit converts high-voltage alternating current into low-voltage direct current and provides a power supply for an optocoupler primary stage; the half-wave detection circuit outputs a pulse signal as an input source of an optocoupler driving signal when the alternating-current voltage crosses the zero point; the optocoupler drive circuit converts the detected pulse signal into an isolated zero-crossing signal and transmits the isolated zero-crossing signal to the MCU. According to the utility model, the power consumption of the electronic equipment in a standby state can be reduced, and unnecessary energy consumption is saved; safety is improved, and negative effects of electric shock are avoided; extra cost is reduced, and conventional-grade insulating materials are used; and meanwhile, the service life of elements such as optocouplers is prolonged.

This invention discloses a manufacturing process and heat treatment equipment for nickel-based alloy valve body forgings, specifically relating to the field of nickel-based alloy heat treatment technology. The heat treatment equipment includes a treatment tank with supporting feet installed at the bottom. An air inlet pipe is installed on the outside of the treatment tank, and a switch valve is fixedly installed on the air inlet pipe. A reciprocating screw drives an extension block, carrying a sliding block, to move into a cold chamber inside the treatment tank. The refrigeration unit in the cold chamber cools the nickel-based alloy valve body forging. Then, the sliding block and sliding rod are used to send the nickel-based alloy valve body forging back to the hot chamber for reheating. This design avoids the cumbersome process of disassembling the storage frame during loading and unloading, and also avoids the rapid temperature loss in the furnace during disassembly, which would waste resources due to subsequent secondary heating.

The invention relates to a starting method of a fuel cell system and a vehicle with the fuel cell system. Comprising the following steps: in response to a starting instruction, acquiring the temperature of a cooling liquid outlet of a galvanic pile, heating the galvanic pile through a cooling liquid loop when the temperature is lower than a preset temperature, controlling a hydrogen loop and an oxygen loop of the fuel cell system to be in corresponding working states, and controlling a second output end and an air bypass valve to be in an open state, the first output end and the third output end are in a closed state, one end of the air bypass valve is connected with the output end of the intercooler, and the other end of the air bypass valve is connected with the oxygen output end of the electric pile; and obtaining the temperature of the output end of the air compression assembly and the hydrogen outlet temperature of the electric pile, and controlling the fuel cell system to start according to the temperature of the output end of the air compression assembly and the hydrogen outlet temperature. Therefore, the problems that in the prior art, the heating efficiency is low, the energy loss is large, the local temperature difference is too large, and cooperative regulation and control over the hydrogen and the air side are lacked are solved, and the safe, rapid and energy-saving cold start process is achieved.

The utility model discloses a double-layer sound absorption stone composite board which comprises a board layer, a stone board, a cellular board, a bottom board layer and a sound insulation structure. According to the stone composite board, the cellular board is located between the second sound insulation structure and the sound insulation structure, the sound insulation structure is located between the bottom board layer and the board layer, so that double-layer sound insulation is adopted in the stone composite board, the sound insulation structure of the stone composite board is improved, the keel frame is filled with the sound absorption layer, the sound absorption layer is made of rock wool materials, and the sound insulation effect is good. The sound absorption layer can absorb sound waves and can absorb indoor sound, the indoor sound can be effectively prevented from spreading outwards, the sound waves are processed by the sound absorption cotton after being processed by the sound absorption layer, and therefore the sound insulation effect is improved, the sound absorption cotton is made of glass wool, the interior of the glass wool is fluffy than that of rock wool, the sound wave loss capacity is high, and better sound absorption performance is achieved; external sound is effectively prevented from being transmitted into a room, and the stone composite board of the double-layer sound insulation structure has the advantage of being high in sound insulation effect.