摘要:
A salient pole machine and method of forming the same comprising a rotating field assembly and at least one inter-pole cap connected to the rotating field assembly and/or at least end coil cap connected to the rotating field assembly. Each inter-pole cap preferably includes a top surface that has a curvature and/or at least one cavity. Each end coil cap may include at least one support. The salient pole machine may also include at least one fan assembly independent of the rotating field assembly. In a preferred embodiment, the salient pole machine includes at least one mounting plate, wherein each fan assembly is mounted on the mounting plate. The inter-pole caps and the end coil caps preferably comprise composites, polymers, alloys, ceramics, or naturally occurring materials.
摘要:
A salient pole machine and method of forming the same comprising a rotating field assembly and at least one inter-pole cap connected to the rotating field assembly and/or at least end coil cap connected to the rotating field assembly. Each inter-pole cap preferably includes a top surface that has a curvature and/or at least one cavity. Each end coil cap may include at least one support. The salient pole machine may also include at least one fan assembly independent of the rotating field assembly. In a preferred embodiment, the salient pole machine includes at least one mounting plate, wherein each fan assembly is mounted on the mounting plate. The inter-pole caps and the end coil caps preferably comprise composites, polymers, alloys, ceramics, or naturally occurring materials.
摘要:
The present invention is designed to be mounted over a flaming oil wellhead to extinguish the flames. The invention includes a base having hydraulically operable arms designed to allow secure support of the base over the oil wellhead even in uneven terrain. A cap device is mountable on the base and includes tangentially arranged ports designed to supply the interior of the cap with a fluid such as liquid nitrogen to cool and extinguish the flames. The cap may include a labyrinth tortuous path restrictor forcing escaping combustion products and other gases to follow a tortuous path to atmosphere to thereby cause the gases to lose energy and cool as they escape.
摘要:
A combined heading and depth sensor for acquisition of both compass heading and depth data and transmission of the combined data over a two wire communication link as a single packet of information to a remote data acquisition unit. The sensor includes a remote reading compass assembly, a depth sensor and circuitry to interface the compass and depth sensors to the communication link. A communication protocol is defined permitting addressable interrogation of a plurality of combined heading and depth sensors over the two wire link.
摘要:
A remote reading magnetic compass in which a coded compass disc is supported for rotation by a single upper pivot bearing which maintains the disc and associated compass magnet submerged in a damping liquid with positive buoyancy and which provides a selected range of tilt without gimbal mounting.
摘要:
For use in an electro-optically sensed magnetic compass a photoelectric control circuit in which the duty cycle of the illumination source is varied to energize the source only until a valid electrical output signal is detected.
摘要:
An integral heat sink and fan rectifier assembly comprises a disk fastened to a rotor of a synchronous motor or generator, the disk having a central bore, a plurality of fan blades disposed on the outer periphery and a circular array of recesses that receive insulation encapsulated rectifier units that are fastened to the disk and a have a heat transfer plates that engage the bottom of the recesses to transfer heat to the disk which conducts the transferred heat to the fan blades, which transfer the heat to the cooling air as rotor rotates and blows cooling air through a portion of the motor or generator.
摘要:
A communication system for a seismic streamer by which all power and data signals are inductively coupled to the cable leveling devices or instrument pods disposed along the streamer cable. A high permeability ring of magnetic material is dispose around the streamer, and a coil is wound around a segment of the core and connected to circuitry within the bird. The coil can be part of a resonant circuit. Power signals transmitted along the streamer are inductively coupled via the ring core and associated coil to each bird to provide charging of a battery source in the bird. Control signals transmitted along the streamer are coupled via the ring core and coil to the electronics via the ring core and coil to the streamer for transmission to a receiving site. Alternative embodiments are also disclosed in which inductive coupling structures include a portion within the streamer in efficient coupling relationship for power and data transmission.
摘要:
A cartridge retention system includes a cartridge carrying electronic, compressed gas or other components which has a spring-loaded button at one end and which is removably mounted in the breech of an adapter module connected either in a streamer section or between opposing ends of adjacent streamer sections of a towed array. The cartridge is demountably retained within the adapter by providing an adapter housing with a breech which is somewhat longer than the cartridge, and by providing the housing with an overlying two part shell which is rotatable about the housing, with one of the shell parts containing an aperture to accommodate cartridge insertion and with both parts containing an internal circumferential groove adapted to coact with the spring-loaded button on the cartridge to move the cartridge from one end of the breech to the other end upon rotation of the shell. The part of the shell opposite that containing the cartridge insertion aperture is provided with a button retaining aperture such that upon a 180.degree. revolution of the shell, the button is captured in the button retaining aperture to secure the cartridge in the breech such that the cartridge is pressed to the opposing end of the breech and into a connector at the opposing end. When the cartridge is inserted through the shell and into the breech, the button is depressed prior to rotating the shell, with the groove-button camming action forcing the cartridge to the opposite end of the breech.
摘要:
A method and apparatus for providing a magnetic compass, and system to accurately calibrate the compass with a rotation of the vessel on which the compass is mounted through a single rotation of 360 degrees. The compass comprises gimballed field sensing elements, and processor to provide a signal which is corrected for compass offsets, for permanent magnetic field anomalies and for induced magnetic field anomalies.