摘要:
Bei der Messung von Schadstoffen in Abwässern soll eine Lö sung geschaffen werden, welche sicherstellt, daß die Schad stoffermittlung entsprechend der tatsächlichen Schadstoff belastung in Abwässern mit einem möglichst geringen, wirt schaftlich noch vertretbaren Aufwand durchgeführt werden kann. Dies wird dadurch erreicht, daß die Menge des gesamten Ab wassers kontinuierlich gemessen und ein bestimmter Teil des jeweils abgeführten Abwassers abgezweigt und gesammelt wird, worauf die Schadstoffmengen in dem abgezweigten und gesammelten Abwasser bestimmt werden und entsprechend dem Verhältnis der Menge des abgezweigten und gesammelten Ab wassers zur Menge des gesamten Abwassers die Schadstoff mengen im gesamten Abwasser ermittelt bzw. hochgerechnet werden. Hierzu ist die einzige Fig. zu veröffentlichen.
摘要:
A metering valve for extracting a given volume of fluid from a first fluid flow and introducing the thus extracted volume of fluid to a second fluid flow, comprising a stationary valve component provided with a first and a second supply channel and a first and a second discharge channel, and a metering component which can be rotated relative to the stationary valve component and which incorporates a metering channel of the aforementioned given volume. In accordance with the invention, the valve component (2) has a planar surface (9) into which the aforementioned supply and discharge channels open out. The metering component (7) also includes a planar surface (10) which abuts against the planar surface (9) of the valve component (2) and into which the two ends of the metering channel open out. These ends are so located that in the first position of rotation of the metering component (7) in relation to the valve component (2) they connect the first supply channel with the first discharge channel of the valve component (2) and in a second position of rotation connect the second channels of the valve component (2).
摘要:
A mechanized system and method for obtaining representative samples of bulk material from a belt conveyor by removing a cross-stream increment of the bulk material from the conveyor belt.
摘要:
A complete prompt gamma ray neutron activation analysis (PGNAA) bulk material analyzer is self contained in a sealed and air conditioned housing. Bulk material is channeled by an open-ended vertical chute having a one-foot-by-three-foot cross-sectional dimension through an activation region between three neutron sources and two gamma ray detectors. The sources are symmetrically disposed on one of the three-foot- long sides of the chute from one end of such side to the other. The detectors are symmetrically disposed on the opposite side of the chute between positions opposing the positions of the sources on the one side of the chute. The chute is dimensioned to enable free flow of various bulk materials. It handles coal of up to a top size of four inches and with typical surface moisture contents and aglomeration characteristics. The relative disposition of the sources and detectors results in the measurements being independent of the lateral distribution of the bulk material within the chute. The signals produced by the detectors are continuously processed by signal processing equipment sealed within a separate compartment in the container to provide periodic measurements of the elemental content of the bulk material channeled through the activation region. A measurement of the bulk material channeled through the activation region during each periodic measurement interval is processed over several measurement intervals with the periodic elemental content measurements to provide weighted average measurements of the elemental content of bulk material over time periods representing average lots of the bulk material.
摘要:
An apparatus for sampling material flowing through a conduit, comprising: housing means for receiving therethrough a flow of the material as the material flows through the conduit, said housing means including cross-section defining means (14, 16) for defining a full cross-sectional sample area, receptacle means (18) for receiving a collection member (40) outside said defined cross-sectional sample area and connector means (26,28) for connecting said cross-section defining means to the conduit so that the cross-sectional sample area defined by said cross-section defining means is aligned with the cross-section of the conduit; and sampler means, connected with said housing means, for collecting a full cross-sectional sample of the material as the material flows through said cross-section defining means of said housing means under pressure, said sampler means including said collection member (40) disposed in said housing means for receiving a portion of the flowing material; and movement means for moving said collection member from a location outside the full cross-sectional sample area of the material across the full cross-sectional flow sample area of the material, so that it receives said portion of said flowing material as it passes thereacross.
摘要:
A method and apparatus for blending a material containing two distinct phases of different densities flowing along a pipe, so that the two phases tend to form accumulations at different levels in horizontal portions of the pipe, the method comprising injecting a fluid into the pipe under pressure, characterised in that the fluid is injected into the pipe (10) with components of motion both radial and tangential to an adjacent portion of the pipe wall, in such a way that it causes both dispersion of the accumulations (11, 12) and rotation of the material around the circumference of the pipe. The invention is particularly applicable in the oil industry.