Abstract: Provided is a method and device for low-carbon integrated energy system scheduling. A specific embodiment of this method comprise: obtaining the energy device information set for each energy device in the virtual power plant; generating the acquisition cost information for each energy device based on an energy device name, energy device parameter information and an energy device number in the energy device information set; generating the energy scheduling objective values and the parameter information of each energy device based on the preset constraint sets and energy acquisition cost information of each energy device; controlling each energy device in the virtual power plant to execute the energy scheduling tasks based on the objective energy device parameter information.

Abstract: A transducing method comprising: using a working medium of a heat pump (I) to absorb heat from and condense an output pressure working medium gas of a pneumatic motor (J) into a pressure working medium liquid, which is delivered as an input pressure working medium of the pneumatic motor (J); compressing, by the heat pump (I), the working medium after heat absorption to raise the temperature thereof so as to deliver the heat to the input pressure working medium, to enable the same to be heated and vaporized into a pressure working medium gas for actuating the pneumatic motor (J) and then being outputted by the pneumatic motor (J) as the output pressure working medium gas; and delivering the working medium of the heat pump (1) of which the temperature is decreased after the heat thereof has been delivered, to reabsorb heat from the output pressure working medium gas.

Abstract: A ratchet structure for a screwdriver, comprising a ratchet body and a toothed shaft having a segment of a toothed outer surface, wherein a ratchet speed multiplier mechanism which is fitted with the ratchet body and allows the toothed shaft to have a multiplied speed is also sleeved outside the toothed shaft. The ratchet structure has a reasonable structure and the screwdriver exhibits good braking effect, so that the toothed shaft can be rotated at a 5× speed. In this way, the speed for screwing a screw is greatly increased and it is more manpower-saving.

Abstract: The present application relates to a ratchet structure for a screwdriver, comprising a ratchet body and a toothed shaft having a segment of a toothed outer surface, wherein a ratchet speed multiplier mechanism which is fitted with the ratchet body and allows the toothed shaft to have a multiplied speed is also sleeved outside the toothed shaft; and the ratchet speed multiplier mechanism comprises a ratchet speed multiplier casing and three planetary gears, the ratchet speed multiplier casing is sleeved on the toothed shaft and arranged above a steering switch in a folded manner, a toothed surface engaged with the three planetary gears is provided annularly on an inner side of the ratchet speed multiplier casing, the three planetary gears are rotatably arranged on the ratchet speed multiplier casing by a positioning pin, and one end of each of the planetary gears is engaged with teeth on the toothed shaft and the other end thereof is engaged with the ratchet speed multiplier casing.