Twin screw air compressor modeling dimensions and specifications

In this paper, an integral methodology for the modeling of a twin-screw compressor is presented. Starting from a known rotor profile, all the algorithms to calculate the second rotor profile, the size of the control volume, and the compressor's performance are presented. [pdf]

Structural diagram of water well drilling rig

Drilling derricks and Rig Masts consist of a steel framework with a square or rectangular cross-section. Their purpose is to support the hoisting equipment and rack the tubulars while tripping pipe. The number of joints in a stand (single-double-triple) that the rig can pull is dependent on the height of the derrick. . The Drawworks is one of the most important components of the drilling rig (types of drilling rigs). The unit supplies the hoisting power, the. . The Crown Blockas a drilling rig component is a fixed set of pulleys (called sheaves) located at the top of the derrick or mast, where the drilling line is threaded. The companion blocks to these pulleys are the traveling blocks. By using two sets of blocks in this fashion,. . The Traveling Blockis a set of sheaves (pulleys) that move up and down in the derrick. The drilling line is threaded (reeved) over the. . Attached to the bottom of the traveling blocks, the hook is required to hang the swivel and rig kelly(for drilling) and the elevator bales (for tripping pipe and casing). [pdf]

Accumulator drilling rig

Accumulators are ASME-coded pressure vessels for the storage of high-pressure fluid. These accumulators as a part of the BOP control unitare available in a variety of sizes, types, capacities, and pressure ratings. The two (2) basic types are bladder and float which are available in cylindrical or ball styles. The. . Accumulator bottles are containers that store hydraulic fluid under pressure for use in effecting blowout preventer closure. Through the use of compressed nitrogen gas, these. . As a minimum requirement, all blowout preventer control units should be equipped with accumulator bottles with sufficient volumetric capacity to provide the usable fluid volume (with. . The closing system should be capable of closing each ram preventer within 30 seconds. Closing time should not exceed 30 seconds for. [pdf]