34results about How to "Guaranteed insulation requirements" patented technology

The invention relates to a GIS, which comprises: a GIS cylinder body; a crank box, which is fixedly connected to the GIS cylinder body, and the end of the crank box close to the GIS cylinder body is provided with a moving contact seat; the moving contact is guided and assembled on the In the movable contact seat; the crank arm is set in the crank arm box, and the crank arm is connected to the movable contact by transmission; a contact seat insulator is arranged between the movable contact seat and the crank arm box, and the movable contact seat passes through the contact The insulator of the head seat is connected to the crank box to form insulation with the crank box; the moving contact seat has a protruding part, and the protruding part protrudes toward the GIS cylinder; the crank box is provided with a grounding terminal, A terminal insulator is provided between the ground terminal and the crank box; the ground terminal has an external terminal and an internal terminal, the external terminal is located outside the crank box and is used to connect the grounding wire, and the internal terminal is located inside the crank box. A transition conductor is provided between the side of the moving contact seat facing the crank arm and the inner terminal, so as to realize the connection between the ground terminal and the moving contact seat.

The invention discloses a sand prevention work shoe. The sand prevention work shoe comprises a shoe body, a shoe sole and a sand prevention inner container. The sand prevention inner container is arranged in the shoe body, the overall shoe body is wrapped by a heat insulating layer made of heat insulating materials, a shoe tongue sand prevention cover is made at the front end of the upper portion of the shoe body, a steel head matched with a shoe head in shape is arranged at the shoe head at the front end of the interior of the shoe body in a combined mode, and a buffering layer is arranged on the inner side of the steel head in a combined mode; a steel wire net interlayer and a protection interlayer are embedded into the shoe sole, and a wave-shaped dust-raising-prevention side skirt is arranged at the portion where the shoe body is connected with the shoe sole in a combined mode. By means of the sand prevention work shoe, the technical problems that a traditional sand prevention shoe is insufficient in protection performance and comfort are solved; as the shoe head structure for wrapping the whole instep is adopted at the front end of the shoe body, the requirement of workers for the capacity of protecting the feet during operation is met. Meanwhile, due to the buffering layer arranged inside the steel head in the combined mode, the toes and the instep of the workers can be prevented from being injured by crushing objects during operation; in daily use, a person can feel quite comfortable on the foot toes and the instep through the buffering layer, and the comfort is guaranteed.

The invention provides a driving motor for an electric downhole drilling tool, which comprises: a casing, which is in the shape of a cylinder; a rotor shaft, which has a central hole, and is inserted in the casing along the axial direction, and forms an airtight space between the casing and the casing for filling oil. The chamber, the rotor shaft extends out of the chamber and can be connected to the load; the rotor is located in the chamber and is fixed on the rotor shaft; the stator is located in the chamber and is sleeved between the casing and the rotor; the piston is ring-shaped and can The axial sliding sealing sleeve is installed between the rotor shaft and the casing, the piston is located at the bottom of the chamber, and can balance the pressure inside and outside the chamber through sliding. The downhole electric drilling tool driving motor of the present invention has high efficiency and can adapt to downhole high temperature, high pressure and complex external environment.