Abstract:
A protective device for a wall region to be protected, includes a collar which has recesses penetrating the collar and is disposed around the wall region to be protected in an intended configuration of the protective device. A protective cap includes a base and a casing, which extends from the base substantially perpendicularly up to a casing edge and has recesses penetrating the casing. The casing recesses extend from the casing edge in the direction of the base of the protective cap. Casing sections are formed between the recesses. In the intended configuration of the protective device, the casing is disposed between the collar and the wall region to be protected, and one of the casing sections is disposed between each collar recess and the wall region to be protected so that a free linear connection is prevented between the respective collar recess and the wall region to be protected.
Abstract:
Systems and methods are provided that provide for surface estimation of an object. In particular, the surface estimation can be determined with little or no a priori information regarding the position or topography of the object within a given volume. In select embodiments, the systems and methods can be used for microwave imaging, and particularly for estimating breast surfaces during the imaging process.
Abstract:
Smelting apparatus comprises a vessel (11) and a solids injection lance (27a) extending through an opening in the wall of vessel barrel (16) into the interior space of the vessel. Lance (27a) includes a central core tube (31) through which to pass solid particulate material into the vessel and an annular cooling jacket (32) surrounding the central core tube (31) throughout a substantial part of its length. Lance (27a) has a mounting structure (61) comprising a tubular part (60) extended about cooling jacket (32) and about twice the diameter of the cooling jacket. Tubular part (60) fits within a tubular lance mounting bracket (62) welded to the shell (16a) of vessel barrel (16) to extend outwardly from the vessel. The lance is held within mounting bracket (62) by clamping bolts (66) acting between flanges (63,65) on tubular part (60) and tubular bracket (62), such that the forward end of part (60) is flush with the inner surface of the refractory lining (16b) of vessel barrel (16). On release of the clamping bolts and removal of a spacer ring (67) between flanges (63,65), lance (27a) can be driven inwardly for some distance by sliding within tubular bracket (62) to break slag accretions to permit withdrawal of the lance.
Abstract:
A combination fin-type mixer and rotor/stator-type homogenizer provides the ability to perform low-shear mixing or high-shear homogenizing by a single device without changing attachments or hardware. The low-shear mixing fins extend outwardly from the stator of the high-shear rotor/stator homogenizer, and the rotor rotates within the stator. For high-shear homogenizing, the rotor is rotated within the stator. And for low-shear mixing, the finned stator is selectively interlocked to and rotated with the rotor. A method of combining components includes resetting the device from low-shear mixing mode to high-shear homogenizing mode, and vice versa, without changing attachments or hardware.
Abstract:
Apparatus for injecting gas into a vessel including a gas flow duct 31 which receives hot gas through a gas inlet structure 32 at a rear end of the duct. An elongate central structure 33 extends throughout the length of duct 31 and carries a series of vanes 34 for imparting swirl to the gas flow exiting the forward end of the duct. The forward end of duct 31 has an internally water cooled tip 36 and water flows to and from tip 36 through annular passages 43, 44 in the wall of duct 31. tip 36 comprise a hollow shell internally divided by a partitioning structure to form a series of water flow galleries each extending circumferentially around the tip and interconnected for flow of cooling water sequentially through the galleries from the water supply passage 43 to the water return passage 44. The partitioning structure also provides a structural interconnection between inner and outer tubes 37, 39 of the duct wall to transfer gravitational load force from the inner tube to the outer tube when the apparatus is supported vertically through the outer tube.
Abstract:
In one embodiment of the present invention, a motor vehicle electrical system has a plurality of electronic modules. The electrical power input of each module is coupled to the output of a switching power supply. Further, the electrical power input of each module is switchably coupled to vehicle system voltage. During "key-on", the switchable connection to vehicle system voltage is closed, thereby providing "key-on" power for the modules from system voltage. During "key-off", the switchable connection is opened, thereby providing "key-off" power for the modules from the switching power supply. In a second embodiment of the present invention, a motor vehicle electrical system has at least one electronic module with a normal power input and a "key-off" power input. The normal power input is coupled to vehicle system voltage, and the "key-off" power input is coupled to the output of a switching power supply. Systems embodying the present invention can reduce "key-off" current draw from the vehicle battery.
Abstract:
A hot gas injection lance (26) for injecting hot gas into a vessel (11) is made of three modules (26A, 26B and 26C) which all fabricated separately and brought together in successive steps and connected together by releasable fastenings. Lance module (26A) is a main duct module providing an elongate duct (31) through which to direct hot gas into an upper region of the vessel. Lance module (26B) is a gas inlet module through which to direct hot gas into duct (31) of module (26A). Lance module (26C) is a central module which includes an elongate central tubular structure (33) that extends within the gas flow duct (31) and carries at its lower end a series of swirl imparting tubular structure (33) that extends within the gas flow duct (31) and carries at its lower end a series of swirl imparting vanes (34) for imparting swirl to the gas flow exiting the duct. Main duct module (26A) has a mounting flange (110) that abuts a flange (122) on vessel (11) and the flanges (110, 122) are fastened together by bolts (121). Gas inlet module has a lower mounting flange 111 which abuts a flange (103) at the upper end of module (26A) and the flanges (111, 103) are connected together by bolts (112). Central module (26C) has a mounting flange (115) that abuts a flange (114) at the upper end of inlet module (26B) and the flanges (114, 115) are fastened together by bolts (116).
Abstract:
Solids injection lances for injecting solids into a metallurgical vessel are normally supplied with cooling water from a cooling water circuit through water supply lines and return lines. Supply lines are provided with spaced pairs of connectors and bypass valves, and return lines are provided with similar pairs of spaced connectors and bypass valves. Flexible hoses can be connected between the pairs of connectors to establish supply and return flows of cooling water which bypass segments of the main supply and return lines which can be isolated and removed to allow withdrawal and subsequent replacement of the lances.
Abstract:
A metallurgical lance (27a) to extend through an opening in the wall of a smelting vessel barrel (16) and into the interior space of the vessel. Lance (27a) includes a central core tube (31) through which to pass solid particulate material into the vessel and an annular cooling jacket (32) surrounding the central core tube (31) throughout a substantial part of its length. Lance (27a) has a mounting structure (61) comprising an outer annular part (60) extended about cooling jacket (32) and about twice the diameter of the cooling jacket. The outer annular part (60) fits within a tubular lance mounting bracket (62) welded to the shell (16a) of vessel barrel (16) to extend outwardly from the vessel. The lance is held within mounting bracket (62) by clamping bolts acting between flanges (63,65) on the outer annular part (60) and mounting bracket (62). The outer annular part (60) is double walled and the interior space between its walls is divided into water flow passages through which cooling water flows from a water inlet (68) to an outlet (69).