31results about How to "Control thermal deformation" patented technology

The invention discloses a roots blower impeller. The roots blower impeller is of a central symmetry structure. An impeller shaft sleeve hole is formed in the center of the roots blower impeller, multiple impeller blades are arranged in the circumferential direction of the impeller shaft sleeve hole, each of the impeller blades is provided with a balance hole, and the balance holes are stepped cylindrical holes which are formed by alternately stacking of large cross-sectional columnar holes and small cross-sectional columnar holes in the axial direction. The roots blower impeller has the advantages of the improved balance hole structure and control over the amount of thermal deformation of the impeller.

The invention discloses a method for processing a transformer pulling plate magnet isolation tank, comprising the following processing steps: first, drilling technology holes with diameter being equal to the diameter to the tank width of the magnet isolation tank at the two ends of the X direction of the length of the pulling plate body; aligning the technology holes at one end of the X directionof the length of the pulling plate body with a nozzle of a flame cutting torch along the Y direction of the width of the pulling plate body, a cooling water pipe is arranged along the X direction andat the same line the flame cutting torch is located; the flame cutting torch and the cooling water pipe are connected with a moveable cart at one side of the Y direction of the width of the pulling plate body with two mutually parallel arms; the flame cutting torch is stated to facilitate the moveable cart move along the X direction at a speed of 300-500mm / min towards the technology holes at the other end of the X direction; meanwhile, the cooling water pipe is opened to continuously inject water forward along the movement direction of the flame cutting torch; when the flame cutting torch moves to the technology holes at the other end of the pulling plate; the technology holes at the end is aligned with the nozzle of the flame cutting torch along the outside of the Y direction to facilitate the moveable cart to move in the opposite direction until the cart returns to the previous technology holes.

In an electrical connecting apparatus, a thermal deformation restriction member, a reinforcing plate, and an auxiliary member are made of materials having smaller thermal expansion coefficients in this order, and a wiring board supporting a probe assembly is coupled with the reinforcing plate. The auxiliary member has a void inside the coupling region with the reinforcing plate. The void receives the deformed part when the center portion of the wiring board is deformed toward the reinforcing plate. Thus, the thermal deformation restriction member, the reinforcing plate, and the auxiliary member function as a three-layer bimetal having a sandwich structure, and the thermal deformation of the wiring board is restricted effectively.