4results about How to "Simple adaptation" patented technology

A method for withering tea leaves, using withering equipment including a fan (2), a temperature sensor (3), a control box (5), a heating tube (7), and a frame (8), wherein a perforated plate (1) is arranged in the frame (8) to form a trough, and a guide plate (4) is set below the perforated plate (1). The method includes the following steps: starting the control box (5) and measuring and determining the correspondence between the wind speed and the frequency of the fan (2) in segments; spreading the fresh tea leaves flat on the perforated plate (1), controlling the thickness of the spread tea leaves to ensure uniform spreading; setting the direction and wind speed parameters of the fan (2), and starting the fan (2) and the heating tube (7); repeating the blowing process of the fan (2) and the heating process of the heating tube (7) according to the direction and wind speed parameters set in step three until withering is completed. This achieves parameterized and precise control of the withering process.

The application discloses a kind of empty suspension type magnetic stirring assembly to solve the problem of insufficient sealing effect of driving mode in the field of cell culture or biopharmaceutical, comprising: sealed shell assembly;First magnetic rotating part, in the sealed shell assembly;Second magnetic rotating part, in the sealed shell assembly outside, second magnetic rotating part is equipped with stirring paddle;Driving assembly, connect the first magnetic rotating part and can drive the first magnetic rotating part rotation, the first magnetic rotating part rotation can drive the second magnetic rotating part rotation.The power component and transmission component of stirring part are better isolated from the space in the liquid storage container by the magnetic force of the first magnetic rotating part to drive the second magnetic rotating part, avoid the problem of insufficient sealing effect of existing mechanical driving mode.

This invention discloses a MOSFET-based isolated drive circuit system that is easy to control, comprising: an input voltage regulator circuit, a transformer drive circuit, a transformer secondary rectifier and filter circuit, a drive output, and a negative voltage bootstrap circuit; wherein, the input voltage regulator circuit includes: a linear voltage regulator element, a drive power supply, a feedback network, and a filter capacitor; the input terminal of the linear voltage regulator element is coupled to the drive power supply, the drive power supply input voltage is VIN, and the linear voltage regulator element is connected to ground through the coupled feedback network; the input voltage regulator circuit is used to provide a stable DC input to the transformer drive circuit. This invention separates the secondary winding of the transformer in the auxiliary power supply of traditional technology and places it in a discrete transformer, effectively reducing the insulation requirements of the auxiliary power supply transformer and making it easier to drive more MOSFETs. By driving with high-voltage MOSFETs, the problem of excessive auxiliary power supply windings is effectively solved.

The utility model relates to the technical field of power systems, in particular to a single-bus segmented prefabricated cabin type GIS (gas insulated switchgear). GIS combined electric appliances are arranged in the prefabricated cabin body, two columns of GIS combined electric appliances are arranged, each column is provided with two sets of total combined electric appliances and a plurality of control cabinets, the total combined electric appliances are symmetrically arranged and correspond to one another in position, a first three-station isolation grounding switch is arranged at the upper end of a supporting piece, and the upper end of the first three-station isolation grounding switch is connected with a wire outlet sleeve tee joint through a transposition conductor. One end of the first three-position isolation grounding switch is connected with the current transformer, the current transformer is connected with an interface at the upper end of one side of the circuit breaker, an interface at the lower end of the other side of the circuit breaker is connected with the second three-position isolation grounding switch, and a transposition conductor is arranged on one side of the second three-position isolation grounding switch. Compared with the prior art, the arrangement size of the GIS combined electric appliance is reduced, the equipment cost is reduced, the on-site workload is reduced, transportation is convenient, and prefabricated cabins of different sizes can be adapted more easily.