104 results about "Flux tube" patented technology

A manufacturing procedure of a vortex flowmeter is disclosed that allows for assembly of a vortex sensor assembly with one of two or more unitary flowtubes that have bores that are smaller than the flowtube flanges in two or more size number steps. The unitary flowtubes include flanges, flowtube bores and expanders (also called reducers) that provide a smooth flow transition from the larger flanges to the smaller bores.

An ultrasonic measuring unit and a method for detecting ultrasonic signal run-times, in which the ultrasonic measuring unit has two ultrasonic transducers for coupling ultrasonic signals into a flowing medium. Analysis electronics are provided to be accommodated on or in a flow tube, in which a gaseous medium such as circulating air flows. A probe unit is accommodated in the flow tube, the probe unit being assigned a temperature probe having a flow around it, whose measured value is used for correcting a temperature signal detected by ultrasound.

A high mass-flow sensing apparatus and method of forming the same, comprising a flow tube bypassed in a flow path defined by a flow channel, through which a fluid flows. A flow sensor can be disposed in the flow tube for measuring a flow rate of the fluid in the flow channel. A set of narrow rectangular flow restrictors can be molded into the flow tube and adjacent to the flow sensor. Each flow restrictor can include several rectangular cutouts that are molded into upstream and/or downstream portions of the flow tube in order to limit the flow rate of the fluid across the flow sensor. The flow restrictors can laminarize the flow rate of the fluid in the flow tube and thereby reduce flow turbulence and lead to optimal sensing performance of the flow sensor.

The flow sensor serves to measure an electrically conductive fluid flowing in a pipe. It comprises a flow tube designed to be inserted into the pipe for conducting the fluid, the flow tube being electrically nonconductive at least on a fluid-contacting inner side, an electrode arrangement consisting of at least two measuring electrodes disposed on the flow tube for picking up a voltage induced in the fluid, and a magnetic field system likewise disposed on the flow tube. The magnetic field system comprises at least two saddle-shaped field coils for producing a magnetic field cutting the fluid during operation of the flow sensor, a respective ferromagnetic pole piece for each of the two field coils, as well as at least one ferromagnetic return path extending around the flow tube upstream of the two field coils and at least one ferromagnetic return path extending around the flow tube downstream of the two field coils for directing the magnetic field around the flow tube. The pole pieces are magnetically coupled to the return paths by means of ferromagnetic coupling elements. Each of the, preferably identically shaped, coupling elements has at least one essentially trough-shaped cover segment which receives a first winding section of the respective associated field coil, lying essentially on a first periphery of the flow tube, or a second winding section of the associated field coil, lying essentially on a second periphery of the flow tube.

A magnetic flowmeter is provided including a magnetic flowtube arranged to receive a flow of process fluid. The magnetic flowtube includes a drive coil and at least one sense electrode. Measurement circuitry is coupled to the flowtube and is configured to provide a drive signal to the drive coil and measure flow of process fluid through the flow tube based upon an output from the sense electrode. A memory contains a stored value related to a nominal parameter of the flowtube. Verification circuitry is arranged to measure a parameter of the magnetic flowtube and responsively provide a verification output related to operation of the magnetic flowmeter based upon a comparison of the measured parameter and the stored value.

A sensor for measuring a density of a fluid is provided. The sensor (200) includes a flow tube (104) for receiving the fluid and a vibration driver (102) coupled to the flow tube, the vibration driver configured to drive the flow tube to vibrate. The sensor also includes a vibration detector (106) coupled to the flow tube, the vibration detector detecting characteristics related to the vibrating flow tube, and a distributed temperature sensor (202) coupled to the flow tube, the distributed temperature sensor measuring a temperature of the flow tube as the flow tube vibrates. The sensor further includes measurement circuitry (110) coupled to the vibration detector and the distributed temperature sensor, the measurement circuitry determining a density of the fluid from the detected characteristics related to the vibrating flow tube and the measured temperature of the flow tube.

The invention relates to an electron temperature compensated float flowmeter, which comprises a flow pipe with a conical pipe cavity, a first guide rod arranged by penetrating the flow pipe, a float arranged in the conical pipe cavity of the flow pipe, a displacement sensor, a temperature sensor and a microprocessor, wherein the float is fixedly sleeved on the first guide rod; the displacement sensor and the temperature sensor respectively output a displacement signal and a temperature signal to the microprocessor. Fluid body flows through the conical pipe cavity of the flow pipe to push the float to move up and down with the first guide rod; the displacement sensor converts the measured displacement quantity into an electric signal to input to the microprocessor, meanwhile, the temperature sensor senses the environment temperature and inputs the temperature electric signal to the microprocessor; and the microprocessor modifies the displacement signal according to the temperature signal. Compared with the flow signal obtained by the unmodified displacement signal, the flow signal obtained according to the modified electric signal has a higher accuracy.

A disposable fluid flow sensor is disclosed herein, which generally includes a flow channel assembly comprising a flow channel tube in association with a disposable flow channel portion. A sensor die is located approximate to a thin interface or membrane formed from the disposable flow channel portion, such that the sensor die measures a flow of fluid flowing through the flow channel tube and the disposable flow channel portion of the flow channel assembly. Additionally, a substrate can be provided upon which the sensor die is formed and located. A seal can also be provided for sealing the disposable flow channel portion to the flow channel tube. Such a flow sensor can be implemented in the context of a “non-isolated” sensor die approach in which the sensor die, substrate and flow tube are assembled together into a complete disposable assembly, in which a thin interface does not cover the sensor die. The flow sensor can also be implemented in the context of an “isolated” sensor die approach in which a thin membrane material or thin interface prevents the fluid from touching the surface of the sensor die. In such an “isolated” configuration, the sensor die is not actually part of the disposable flow tube assembly. The only disposable portion in this approach is the flow tube itself.

An improved fluid flow gauging device includes a light enhanced acrylic block flow tube to optimize visualization of pressure readings. An LED or other light source is fitted to the top of the flow tube and illuminates a float or bobbin from above to provide more accurate readings, especially in low light conditions such as modern operating rooms. In addition, the light enhanced flow tube provides a mechanical backup in the case of failure of newer electronic systems and visually matches the graphical flow display, simultaneously providing a double-check of the electronic system.

The invention relates to a butt joint process for a 10 kV oil-impregnated paper insulated cable and a cross-linked polyethylene insulated cable. A stress distribution tube is utilized to realize the even distribution of the point electric field of butt joint cables, thereby eliminating the damage to the operation of the cables caused by the point electric field; a composite tube made of heat-shrinkable materials is utilized to realize the insulation restoration of a cross-linked cable and the even distribution of the electric field, and the composite tube is an integral tube compounded by a transistor, an insulating tube and the stress distribution tube, thereby eliminating the errors of overlapping sizes when the transistor, the insulating tube and the stress distribution tube are manually made and mounted, so as to ensure the success ratio of the production of cable heads; a metal connection conducting tube separates and seals the existing metal conducting tube with a flux tube in the middle thereof; and after the cables are butted with each other, and the oil of the oil-impregnated paper insulated cable cannot flow into the cross-linked cable by a metal wire core, so as to avoid the pollution of the oil of the oil-impregnated paper insulated cable to the cross-linked cable after butt joint. The invention has the advantages that after the oil-impregnated paper insulated cable is butted with the cross-linked cable by the process, the butt joint position is easy to leak the oil, the operation is stable, and the time is long.

A small volume prover apparatus and method for precisely measuring the flow rate of a fluid via a cylindrical component such as a flow tube. A precision bore cylinder and a piston can be configured with a valve arrangement in order to permit fluid to pass through an annular passage when the piston travels from one position to an opposite position. An accelerometer sensor can be mounted to the piston for continuously detecting the velocity of the piston traveling in the pipe by integrating acceleration data with respect to time data. The volumetric flow rate can be automatically calculated by multiplying the velocity with respect to the area of the flow tube.

An apparatus, for use with a fluid moving device that moves a fluid from a container. The apparatus includes a flowtube having a passage, the flowtube having a first end and a second end. A body is positioned in the passage of the flowtube, and a sensor array comprising at least two sensors is positioned along the length of the flowtube and between the first end and second end of the flowtube. The sensors in the sensor array sense (e.g., detect) the body as the body flows past the sensors. The sensors in the sensor array are adapted to generate signals, and a controller is operatively coupled to the sensor array. The controller is adapted to control the fluid moving device in response to the signals generated by the sensor array.

The invention discloses a water gauge. The water meter comprises a gauge outfit, a flux tube and an ultrasonic transducer. A transduction hole is formed in the flux tube, and the ultrasonic transducer is installed in the transduction hole. The gauge outfit is installed on the flux tube. The ultrasonic transducer is connected with the gauge outfit. A flow-splitting reflector is installed inside the flux tube and arranged corresponding to the ultrasonic transducer. The flow-splitting reflector comprises a splitter plate, and one end of the splitter plate is connected with an acoustic beam reflecting plate in an inclined mode. The ultrasonic transducer corresponds to the acoustic beam reflecting plate, and an acoustic beam emitted by the ultrasonic transducer is reflected on the acoustic beam reflecting plate. By the adoption of the water gauge, water flow in the flux tube can be split and neatened, the unstable state of the water flow is eliminated, differences in flow rates at all points of the same section are reduced, and therefore the accuracy of flow measurement is improved.