摘要:
A load sensor that can be incorporated in a vessel that is to be circumferentially stressed by winding prestressing filaments or bands under tension around the vessel, the sensor being arranged to be mounted in a suitable cavity formed in the wall of the vessel at a zone such that the mouth of the cavity is bridged by prestressing filaments or bands when these are wound on to the vessel, and the sensor comprising a saddle member and the load sensing means serving, in use, to support the saddle member in the region of the mouth of the cavity such that prestressing filaments or bands bridging the mouth of the cavity apply loading to the saddle, which loading is sensed by the sensing means.
摘要:
A concrete pressure vessel having a lined cavity for hot, chemically aggressive liquid disposed within a cooling jacket with a layer of material of high thermal conductivity between the cavity liner and the cooling jacket, the jacket and high thermally conductive layer serving to maintain the temperature of the cavity liner within closely controlled limits and the maximum temperature of the main body of the vessel at an acceptable level, and the jacket and the conductive layer also serving to prevent leakage of liquid from the cavity.
摘要:
A strain gauge incorporating a length of wire maintained under a predetermined tension and an electric magnetic device for plucking the wire at substantially the mid point of its length, the wire being disposed in a hollow spacer tube assembly comprising an outer tube formed of a material such as ebonite which while being longitudinally compressible nevertheless has a lateral stiffness sufficient to withstand forces which may normally be expected to be applied thereto when in use, and an inner tube or liner of brass or other equivalent material made up of at least two axially aligned lengths of tube so arranged that at least one gap or space will be present in the overall length of said inner tube or liner.
摘要:
IN CASES WHERE PRE-STRESSING STRANDS ARE WOUND UNDER TENSION AROUND A CONCRETE PRESSURE VESSEL IN ORDER CIRCUMFERENTIALLY TO STRESS THE SAME AND THE WINDINGS ARE DISPOSED IN TROUGHS OR CHANNELS IN OR ON THE OUTWE SURFACE OF THE VESSEL THE TERMINAL END OF EACH PRESTRESSING STRAND IS ANCHORED THROUGH THE MEDIUM OF AN ANCHORAGE MEMBER WHICH IS SUPPORTED FOR LIMITED SLIDING MOVEMENT IN AN APPROPRIATELY SHAPED RECESS IN ONE WALL OF THE TROUGH OR CHANNEL IN WHICH THE WINDINGS OF THE STRAND HAVE BEEN LAID. WITH THE ANCHORAGE MEMBER IN A POSITION WHEREIN IT PROJECTS FROM THE RECESS THE TERMINAL END OF THE STRAND IS ATTACHED TO SAID MEMBER WHICH IS THEREAFTER FORCED TO GETHER WITH THE ANCHORED END PORTION OF THE STRAND INTO THE RECESS CLEAR OF THE TROUGH OR CHANNEL.