In automated control-valve applications, large, expensive, and cumbersome actuators (solenoids, motors, or cylinders) often dwarf the actual valves that they control. By splitting the upstream pressure, the BP valve conquers an old problem: the need for large operating forces. Instead, counterbalanced pistons, linked to a common shaft, roll open with relative ease, reducing valve size, mass, and power requirements.
Three components at the heart of the concept include a reciprocating cylindrical seat, a reciprocating solid plug, and a fixed-axis rotary shaft. A seated plug presents a solid face to block flow. When unseated, fluid flows around the plug and through the seat cylinder. Although fluid pressure pushes these two elements in a downstream direction, rotary-shaft linkage prevents movement. Because the pressure-induced forces on the seat and plug act on the shaft in opposite directions, they balance each other. Consequently, a slight torque applied to the shaft moves the plug and seat cylinder in opposite directions to each other, even with very high upstream pressures.
We looked at a number of sources to determine this year's greenest cars, from KBB to automotive trade magazines to environmental organizations. These 14 cars emerged as being great at either stretching fuel or reducing carbon footprint.
Healthcare might seem to be an unlikely target application for the Internet of Things technology, but recent developments show small ways that big-data is going to make an impact on patient care moving into the future.
As energy efficiency becomes more and more a concern for makers of electronics devices, researchers are coming up with new ways to harvest energy from sound vibration, footsteps, and even electromagnetic fields in the air.
A quick look into the merger of two powerhouse 3D printing OEMs and the new leader in rapid prototyping solutions, Stratasys. The industrial revolution is now led by 3D printing and engineers are given the opportunity to fully maximize their design capabilities, reduce their time-to-market and functionally test prototypes cheaper, faster and easier. Bruce Bradshaw, Director of Marketing in North America, will explore the large product offering and variety of materials that will help CAD designers articulate their product design with actual, physical prototypes. This broadcast will dive deep into technical information including application specific stories from real world customers and their experiences with 3D printing. 3D Printing is