摘要:
An apparatus is provided for use with a pressurized-water reactor's steam generator having a manifold chamber enclosing the bottom side of a horizontal tube sheet having holes therethrough in which are mounted the tubes of a heat exchanger tube bundle, the manifold chamber having a manhole giving access to the tube's bottom side to permit internal inspection or repair of the tubes by registration of an end of a flexible guide conduit with the tube sheet holes and through which a flexible carrier can be guided for insertion via these holes in the tube sheet and through the tubes extending from the tube sheet's other side. The apparatus is a light-weight fixture which is manually insertable through the manhole and comprising a beam, means for detachably supporting the beam horizontally in the chamber beneath the tube sheet's bottom side, a horizontal cantilever arm having one end provided with means for supporting the aforementioned guide conduit with its end pointing upwardly and means for mounting the other end of the arm on the beam for horizontal movement of its end having the guide conduit supporting means. The carrier is a flexible hose insertable through any one of the heat exchanger tubes, and being tubular, the carrier hose can carry conductors from an inspection or repair device mounted on the inner end of the carrier hose, back to the relatively safe, remote location for measuring or controlling purposes. The apparatus has additional features.
摘要:
A method for determination of the inclination angle and the anteversion angle of an acetabulum of a patient in an anatomical reference system whose orientation is determined by the pelvic bone of the patient, taking account of any pelvis tilt, the method comprising the following steps: a first image of the pelvic bone is provided, wherein the first image shows a frontal plane including the pelvic bone; a first inclination angle of the acetabulum is determined using the first image; a pelvis rotation angle is determined, which indicates the rotation angle of the pelvic bone about the normal to the frontal plane relative to an optimum patient location position; a second image of the pelvic bone is provided, wherein the plane of the second image is rotated by an image rotation angle relative to the frontal plane about a common section line of the two planes, preferably about the body longitudinal axis of the patient; a second inclination angle of the acetabulum is determined using the second image; a pelvis tilt angle is determined, which represents a rotation of the frontal plane of the first image relative to an anterior-pelvic plane in the optimum patient location position; a linear equation system is set up having at least two linear equations as a function of the previously determined angles; the normal vector no is expressed in polar coordinates of the anatomical reference system; the at least two linear equations are solved for the azimuth and polar angle of the normal vector no in order to determine the inclination and the anteversion in this way.
摘要:
The invention relates to a headlamp adjusting device with lamp units that can be adjusted in groups. To this end, each lamp unit is mounted individually directly or indirectly in the headlamp housing by means of one respective joint; and it is swivelably mounted in a first feed mechanism. The headlamp adjusting device comprises a second feed mechanism. The second feed mechanism guides the first feed mechanism. The orientation of the feed motion of the first feed mechanism and the orientation of the feed motion of the second feed mechanism enclose an angle, which is not equal to an integral multiple of Pi. With the present invention a space-saving headlamp adjusting device for adjusting the lamp units in two directions of adjustment is developed.
摘要:
A mixed hardware register and memory architecture is provided by the present invention to maintain the advantage of variable length stack frames while eliminating the requirement for a stack pointer. The invention includes a global register bank and a stack register bank with two independent address means for addressing the global and stack register banks. Registers are provided as temporary memories for the source operand and destination operand, and a second data path is provided for transfer of data words directly from memory to the local and global registers. The frame pointer is incorporated as a portion of the status register present in the global register bank. Storage of the status register on a call instruction and restore of the status register in a return instruction automatically stores the frame pointer providing the elimination of a hardware register and one cycle in both call and return instructions over prior art devices. The register to register architecture of the invention allows elimination of the stack pointer and stack instructions such as push and pull are unnecessary resulting in a compact instruction set.
摘要:
A light assembly disperses light emitted by a light source. The lighting assembly includes a light entry surface for receiving the light emitted by the light source. A direction surface directs the light in a predetermined direction. A stepped region, disposed adjacent the light entry surface receives the light directed by the direction surface and reflects the light. The stepped region includes a plurality of step parts, each defining a light deflection surface, wherein each of the light deflection surfaces is greater in area s step distance between the light deflection surface and the direction surface increases.
摘要:
A method and system are provided for the transmission of a refresh signal to a semiconductor memory connected with a central computer bus with predetermined transmission priority, the refresh signal and a refresh repeat signal which determines the chronological transmission of the refresh signal, being transmitted to the memory by a central processing unit at a predetermined priority in relation to other aggregates connected to the computer bus. According to the invention, the refresh repeat signal is split into at least two chronologically successive signals during the first component signal, and the refresh signal is transmitted to the computer bus during transmission of the first component at low priority, transmission of the refresh signal not being possible during the first component, and the refresh signal being placed on the computer bus on a higher priority during the second component signal.
摘要:
Automatically traveling tube-interior manipulator for the remotely controlled transportation of testing devices and tools along given feedpaths through the tube interior, including a stepping mechanism having at least two links including a rear stepping body and a front counterstepping body as seen in the direction of entry into the tube, at least one gimbal-type joint hinging the bodies to each other, clamping devices disposed on each of the bodies for clamping the bodies to the inner periphery of the tube, driving means associated with at least one of the bodies for transporting the stepping body in the axial direction of the tube relative to the counterstepping body when the clamping device of the stepping body is engaged and the clamping device of the counterstepping body is disengaged and vice versa, guiding elements disposed on the outer periphery of each of the bodies for transportation along the inner periphery of the tube, a line reservoir disposed outside the tube, a flexible harness of supply lines connected from the rear stepping body to the line reservoir, and a manipulator head mounted on the front counterstepping body for the testing devices and tools.
摘要:
The sludge water valve for closing the opening communicating with a sludge water discharge channel is disposed in that surface of the side wall of the excess head chamber which is near the solid bed of the filter system and is adapted to open with a hinging movement around a pivot extending substantially at the height of the solid bed along the bottom edge of the valve lid.The discharge rate of the water in the excess head chamber is controlled, and discharge of granular material forming the bed prevented, by the lid being opened stepwise. The top edge of the lid forms a weir edge for the water layer which is immediately above the bed. Consequently, the residual column of the water in the excess head chamber is reduced for the air phase of backwashing.
摘要:
Manipulator assembly for testing the material of a pipe elbow from the inside thereof, the pipe elbow being secured to a pipe union extending from a pressure vessel openable for receiving therein a vertically extending manipulator mast having an arm carrying a manipulator, the manipulator being movable by the arm in vertical direction, rotatably about the axis of the mast and in direction of the longitudinal axis of the arm and transversely thereto, the manipulator includes a multimember vehicle drivable in direction of the pipe-union and pipe-elbow axis, the members of the vehicle being articulatingly connected to one another and having extensible and retractable support legs for supporting the respective vehicular members centered relative to the inner periphery of the pipe elbow, the support legs having roller members at the end thereof for transporting the vehicular members in axial direction of the pipe union and the pipe elbow, the vehicular member located at the head of the multimember vehicle being a test system carrier and being drivable with the vehicle in axial direction of the pipe union and the pipe elbow, the test system carrier having a test system fastened to at least one test arm and mounted so as to be rotatable along predetermined test tracks in circumferential direction of the pipe elbow, drivable radially inwardly and outwardly with the test arm and centerable on the respective center of the pipe elbow, the vehicular members and the test system carrier being mutually engaged by articulating couplings and longitudinally adjustable drive members so that, in an extended readiness position thereof wherein the manipulator is disposed in front of the pipe union, the vehicular members and the test system carrier are oriented in axial direction of the pipe union, are centered on the pipe union center and are rigidly coupled to one another, whereas in a travelling position thereof wherein at least the test system of the manipulator is located within the pipe elbow, the vehicular members and the test system carrier are loosely coupled to one another so that they adapt themselves to the curvature of the pipe elbow as they travel in axial direction thereof.
摘要:
The invention relates to a headlamp adjusting device with lamp units that can be adjusted in groups. To this end, each lamp unit is mounted individually directly or indirectly in the headlamp housing by means of one respective joint; and it is swivelably mounted in a first feed mechanism. The headlamp adjusting device comprises a second feed mechanism. The second feed mechanism guides the first feed mechanism. The orientation of the feed motion of the first feed mechanism and the orientation of the feed motion of the second feed mechanism enclose an angle, which is not equal to an integral multiple of Pi.With the present invention a space-saving headlamp adjusting device for adjusting the lamp units in two directions of adjustment is developed.