3results about How to "Reduce device size" patented technology

The utility model discloses an asymmetric cooperative control three-phase balance motor soft starter, comprising a three-phase AC power supply input end, a power adjusting unit, an output end connected to a three-phase asynchronous motor, and a main controller which are connected in sequence. The power adjusting unit comprises an A-phase control module which is internally provided with a first thyristor at least controlled by a main controller; the B-phase control module is internally provided with a pair of antiparallel second thyristors controlled by the main controller; and the C-phase control module is internally provided with a pair of third thyristors which are controlled by the main controller and are reversely connected in parallel. The main controller cooperatively controls the conduction angles of the first thyristor, the second thyristor pair and the third thyristor pair in the starting process of the motor by outputting a control signal so as to adjust the voltage applied to the motor and improve the balance of the three-phase output voltage. According to the utility model, the three phases are controlled, so that the three-phase balance during starting is effectively improved, and the vibration and noise of the motor are reduced.

The invention relates to an array substrate and a preparation method thereof. The array substrate comprises a display area and a frame area which are arranged adjacently; the array substrate comprises a substrate; the shifting register is arranged on one side of the substrate and located in the frame area; the shift register comprises a first transistor, wherein the first transistor comprises a first active layer; the pixel circuit is arranged on one side of the substrate and located in the display area; the pixel circuit comprises a second transistor, and the second transistor comprises a second active layer; the carrier mobility of at least part of the first active layer is greater than that of the second active layer, and the material of the first active layer comprises a polycrystalline oxide semiconductor. Therefore, according to the array substrate and the preparation method thereof provided by the invention, the performance of the array substrate and the display panel can be improved.

This invention discloses a gas-phase steady-state distribution device for flotation machines used in oilfield produced water treatment, comprising a water distribution main pipe, a slag scraper, an inclined plate, and a sludge scraper installed inside the flotation machine casing; a release device is provided at the inlet of the water distribution main pipe, and a water distribution branch pipe is connected to the water distribution main pipe, which in turn is connected to a water distribution branch pipe, which is also connected to a second release device; the outer wall of the flotation machine casing has a slag discharge port, a sludge discharge port, and a water outlet; the flotation machine inner cavity, a reflux pump, a dissolved air tank, and the first release device are connected in sequence. The beneficial effects of this invention are: improved gas-phase rising flow pattern, enhanced ability of bubbles to carry oil droplets and impurities, resulting in effluent water quality meeting design requirements, significantly improved treatment efficiency, and a substantial reduction in residence time and equipment size.