43results about How to "Large water supply" patented technology

The invention discloses an H-shaped shallow cavity dynamic / static-pressure mixed water lubrication radial bearing provided with annular communication grooves, and belongs to the field of bearing design and manufacturing. The H-shaped shallow cavity dynamic / static-pressure mixed water lubrication radial bearing comprises shaft diameters, H-shaped static-pressure cavities, throttling holes, shaft sleeves and the annular communication grooves. 4-6 H-shaped static-pressure cavities are uniformly arranged on the inner surface of a shaft sleeve in the peripheral direction; and the depths of the static-pressure cavities are 2-7.5 times of a radial gap. The adjacent H-shaped static-pressure cavities communicate through the annular communication grooves. The throttling holes of throttles are formedin the centers of peripheral transverse separators of the H-shaped static-pressure cavities; and lubrication water enters the H-shaped static-pressure cavities by the throttling holes through a watersupply device. The shaft diameters are sleeved in the shaft sleeves. The H-shaped shallow cavity dynamic / static-pressure mixed water lubrication radial bearing has excellent operation characteristicsand machining performances; through reduction of the depths of the static-pressure cavities and reduction of the difficulty and the cost of a bearing overlaying process, a dynamic-pressure effect ofa fluid is fully used for improving the bearing capacity of bearing and reducing the friction force of the bearing; multiple times of tool setting in the machining process can be prevented through theannular communication grooves, so that the relative position control precision of the static-pressure cavities in the machining process is improved, the water supply quantity is increased by a smallamplitude, and the temperature rise of the bearing is reduced.

The invention relates to an ultrasonic flaw-detecting machine for steel pipes. The ultrasonic flaw-detecting machine for the steel pipes is characterized in that: a flaw detection host machine comprises a box body, and two adjustable three-wheel centering devices are arranged at an inlet and an outlet on two sides of the box body respectively; a hollow spindle is arranged in the box body in a rotatable way, and a measured steel pipe passes through the hollow spindle, the inlet and the outlet; and the middle part of the hollow spindle is provided with at least three probe adjustment devices, an ultrasonic probe is arranged on each probe adjustment device, a power generation device and a signal pre-processing device are arranged outside the hollow spindle, and the signal pre-processing device is connected with the ultrasonic probes, and transmits detection data to an ultrasonic flaw detector of a control system by using a wireless signal. A structural form that the steel pipes are linearly pushed and the ultrasonic probes rotate is adopted, so that the pushing speed of the steel pipes is improved, and the flaw detection efficiency is improved; and the centrifugal force produced by the high-speed rotation of the hollow spindle extrudes the air in a detection cavity, and water is supplied by using an interlayer between an inner sleeve and the hollow spindle, so that the water supply quantity is large, bubbles are reduced, and the detection accuracy is improved.