74results about How to "Smooth shock" patented technology

The invention discloses a distribution network integrated lightning protection system comprising a transformer substation, and output lines led out of three phases of outlet ports of a transformer substation transformer. Each phase of line is connected in series with an overvoltage isolator. Overhead wires are formed through lead-out of the output ends of the voltage isolators to a pole tower. Pole tower insulating cross arms support the overhead wires, and power transmission wires are fixed via multifunctional wire clamps arranged on the insulating cross arms. A wave-resistant lightning rod is installed at the top end of the pole tower. A simple and rapid grounding device is embedded in the ground of the bottom part of the pole tower so that integrated lightning protection performed on the distribution network lines and the transformer substation is realized with pole tower protection acting as the center and prevention of distribution network lightning tripping and disconnection acting as the key points. Distribution network line dedicated lightning equipment like the wave-resistant lightning rod, the insulating cross arms, the multifunctional wire clamps and the simple grounding device are organically integrated by the system so that the multilayer and three-dimensional integrated lightning protection system is constructed and realized, lightning trip-out rate and disconnection rate can be substantially reduced, and maximum matching of distribution network lightning economical efficiency and effectiveness is realized.

A valve having a trim comprising a plurality of impingement flowpaths, each flowpath comprising a central impingement chamber and having three radially directed inlet passages is provided. As the fluid floes through the inlet passages and enters the impingement chamber the flow starts to turn and impinge upon one another at a substantially central point within the impingement chamber and exit together via the outlet which is substantially axial to the impingement chamber. As the flows entering the impingement chamber impinge on one another as opposed to a wall of the flowpath, the impingement can be used to create a flowpath with reduced erosion.

The invention discloses a floor drain, which comprises a main body, stator cores, rotor sleeves and a storage battery, wherein an accommodating cavity with upper end provided with an opening and lower end communicating with a drainage pipe is formed in the main body; the stator cores are arranged in the accommodating cavity; the rotor sleeves sleeve the stator cores and are capable of rotating relatively to the stator cores; a pair of electromagnetic pairs, capable of causing electromagnetic stimulation, are arranged on the inner wall of each rotor sleeve and the outer wall of each stator core, so that electric motor generators are defined by the rotor sleeves and the stator cores; the storage battery is in charge of supplying power for rotation of the rotor sleeves when the electric motor generators serve as motors, and the storage battery is made to accumulate power along with the rotation of the rotor sleeves when the electric motor generators serve as generators, wherein at least one spiral guide groove is at least formed in the outer wall of each rotor sleeve, so that spiral passages are defined by the outer walls of the rotor sleeves and an accommodating cavity wall of the accommodating cavity; and the rotor sleeves are driven to rotate by water which flows through the spiral passages, and the electric motor generators serve as the generators so that the storage battery is made to accumulate the power.

A downwind wind turbine blade system with angular displacement adjustable blades comprises a wind speed sensor, a controller, a hub, blade main bodies and executing mechanisms, wherein the wind speed sensor is arranged outside an engine room close to a wind side, the controller is installed in the engine room and is electrically connected with the wind speed sensor. The hub is installed outside the engine room far from the wind side. The blade main bodies are connected with the hub through a rotating shaft. The executing mechanisms are arranged on two sides of the rotating shaft and connected with the rotating shaft. The executing mechanisms are electrically connected with the controller. The wind speed sensor is used for transmitting speed signals to the controller. The controller gives instruction to command the executing mechanisms to unlock the rotating shaft and then drives the rotating shaft to rotate. The blade main bodies connected with the rotating shaft rotate synchronously along with the rotating shaft at the same angle to achieve the purposes of closing up following the wind or stretching against the wind. Along with changes of wind speed, several angles can be set so as to avoid instability of the blades caused by continuous rotation. The downwind wind turbine blade system with the angular displacement adjustable blades is capable of reducing energy capture of a wind driven generator when the wind speed is high, ensures that the wind driven generator works close to a nominal parameter, thereby enlarging the application range of the wind speed of the wind driven generator.