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4678278 Sight tube for monitoring of fluids
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New Patents
4678278 SIGHT TUBE FOR MONITORING OF FLUIDS Albert D Friesen, Walter F Grassier, Winnipeg, Canada assigned to The Winnipeg Rh Institute Inc A sight tube for ultraviolet monitoring of liquid and capable of handling industrial scale flow rates for example 40 gallons (180 liters) per minute in which the shape is especially designed to allow oppositely disposed windows, through which the ultraviolet light passes, to be relatively close together. The sight tube has an interior the central section of which has a flat sided portion adjacent and parallel to the windows, the flat sided portion being flanked by two side portions which are thicker than said flat sided portion, the tube having cylindrical end sections joined to the central section by intermediate sections which provide gradual transitions between the section shapes.
4678567 ACTIVATED SLUDGE PROCESS BED Iwao Ueda, Kyoto, Japan assigned to Ueda Iwao; Ueda Chic An activated sludge process bed in which an outer periphery of a cylindrical core is wrapped with a porous member of a certain thickness and tightened with belts, characterized in that the outer periphery is partially exposed.
4678621 METHOD AND MEANS FOR MONITORING THE CONTINUITY OF A FLUID-FILLED NETWORK OF CONDUITS AND VALVES Vincent M Callaghan, Melvin J Wolpert assigned to Combustion Engineering Inc A fluid-filled network of connected conduits and valves receives an acoustic signal in the form of waves of predetermined frequency, amplitude,
and time sequence. At a second location, an acoustic receiver senses the form of the waves in frequency, amplitude, and time sequence arriving from the transmitter. The comparison between the acoustic signal introduced into the network and the signal received from the network represents whether the valve settings are satisfactory for using the network as a unit.
4678622 TRANSIENT MONITOR FOR NUCLEAR REACTOR William S Rowe, Fred C Chao assigned to General Electric Company A monitored nuclear reactor parameter, such as a startup range neutron monitoring signal, is filtered at a filter having a preselected time constant and amplified with the output being passed to one channel of a two channel comparator. The level of the amplification and the filter time constant are chosen to discriminate between normally increasing startup neutron density including the prompt-jump effect and exponentially increasing neutron density due to the occurrence of reactor casualty in view of the design parameters of the reactor. This same startup range neutron monitoring signal is passed unprocessed to the other channel of the two channel comparator. Comparison of the two signals is made with the binary output of the comparator flagging excess of the unprocessed signal over the filtered and amplified signal. Presence of the appropriate reactor flag is typically used to cause rod withdrawal blockage and/or SCRAM. The time constant of the filter causes the monitored neutron density signal to be delayed in its tracking of reactor startup. The level of amplification of the monitored neutron density signal establishes the reference level in the comparator which when exceeded sets the comparator flag. Consequently, comparator response time varies inversely with the severity of increase in neutron density. Preferably a first amplification level is used for determining rod withdrawal block and a second and higher level of amplification is used for plant SCRAM comparators. A dynamic display to the operator of comparison between monitored neutron density and the dynamically tailored trip levels is provided.
New Patents
4678278 SIGHT TUBE FOR MONITORING OF FLUIDS Albert D Friesen, Walter F Grassier, Winnipeg, Canada assigned to The Winnipeg Rh Institute Inc A sight tube for ultraviolet monitoring of liquid and capable of handling industrial scale flow rates for example 40 gallons (180 liters) per minute in which the shape is especially designed to allow oppositely disposed windows, through which the ultraviolet light passes, to be relatively close together. The sight tube has an interior the central section of which has a flat sided portion adjacent and parallel to the windows, the flat sided portion being flanked by two side portions which are thicker than said flat sided portion, the tube having cylindrical end sections joined to the central section by intermediate sections which provide gradual transitions between the section shapes.
4678567 ACTIVATED SLUDGE PROCESS BED Iwao Ueda, Kyoto, Japan assigned to Ueda Iwao; Ueda Chic An activated sludge process bed in which an outer periphery of a cylindrical core is wrapped with a porous member of a certain thickness and tightened with belts, characterized in that the outer periphery is partially exposed.
4678621 METHOD AND MEANS FOR MONITORING THE CONTINUITY OF A FLUID-FILLED NETWORK OF CONDUITS AND VALVES Vincent M Callaghan, Melvin J Wolpert assigned to Combustion Engineering Inc A fluid-filled network of connected conduits and valves receives an acoustic signal in the form of waves of predetermined frequency, amplitude,
and time sequence. At a second location, an acoustic receiver senses the form of the waves in frequency, amplitude, and time sequence arriving from the transmitter. The comparison between the acoustic signal introduced into the network and the signal received from the network represents whether the valve settings are satisfactory for using the network as a unit.
4678622 TRANSIENT MONITOR FOR NUCLEAR REACTOR William S Rowe, Fred C Chao assigned to General Electric Company A monitored nuclear reactor parameter, such as a startup range neutron monitoring signal, is filtered at a filter having a preselected time constant and amplified with the output being passed to one channel of a two channel comparator. The level of the amplification and the filter time constant are chosen to discriminate between normally increasing startup neutron density including the prompt-jump effect and exponentially increasing neutron density due to the occurrence of reactor casualty in view of the design parameters of the reactor. This same startup range neutron monitoring signal is passed unprocessed to the other channel of the two channel comparator. Comparison of the two signals is made with the binary output of the comparator flagging excess of the unprocessed signal over the filtered and amplified signal. Presence of the appropriate reactor flag is typically used to cause rod withdrawal blockage and/or SCRAM. The time constant of the filter causes the monitored neutron density signal to be delayed in its tracking of reactor startup. The level of amplification of the monitored neutron density signal establishes the reference level in the comparator which when exceeded sets the comparator flag. Consequently, comparator response time varies inversely with the severity of increase in neutron density. Preferably a first amplification level is used for determining rod withdrawal block and a second and higher level of amplification is used for plant SCRAM comparators. A dynamic display to the operator of comparison between monitored neutron density and the dynamically tailored trip levels is provided.