Level transmitter for liquids
(57) Abstract:The invention relates to the instrument and can be used in systems of control, management and control of industrial processes, in particular, to measure the level of oil in tank containers tank farms. The inventive sensor includes a measuring pulley, float associated with the pulley steel tape, a balancing mechanism in the form of a spring constant torque and ballast, in the form of goods of a given mass, suspended coaxially with the float on the flexible organs that are attached to the ballast wheels mounted on the axle, provided with a locking mechanism. 1 Il. The invention relates to the instrument and can be used in systems of control, management and control of industrial processes, in particular, to measure the level of oil in tank containers tank farms.Known level transmitter for liquids containing float sensitive element located in the guide and float ballast 
The disadvantage of this sensor is the lack of PR is esta.Closest to the invention is a transmitter for liquids containing a measuring pulley, float associated with the pulley steel tape and mounted in the guides, with which it is connected by ferromagnetic eyes, the balancing mechanism in the form of a spring constant torque and ballast in the form of permanent magnets mounted for movement on rails 
A disadvantage of the known sensor is driven by the need for reconfiguring the mass of the float to lower it to the bottom of the tank, the height of which can be up to ten meters or more, which reduces the efficiency of determining the quantity of oil.The objective of the invention to increase the efficiency of determining the quantity of the controlled fluid.The solution lies in the fact that the level transmitter for liquids containing a measuring pulley, float associated with the pulley steel tape, a balancing mechanism in the form of a spring constant torque, and the ballast, the latter is in the form of goods of a given mass, suspended coaxially with the float on the flexible organs that are attached to the ballast wheels mounted on the axle, provided with a locking mechanism.In the drawing image is RIT building 2, hosts dimensional pulley 3, the balancing mechanism in the form of a spring 4 constant torque, ballast wheels 5 and 6, mounted on a common axis 7, and the locking mechanism 8. The float 9, having a negative buoyancy associated with the pulley 3 steel tape 10 with 11 divisions. On ballast wheels 5, 6) are fixed flexible bodies (cables) 12 and 13, on which is suspended ballast, made in the form of cargo 14 with a given mass. Readings measured level is read through a window 15 in the housing 2.The device operates as follows.In the initial state (when measuring the level of H1) float 9 is located at the interface of the oil with air. At a constant level of H1the buoyancy force on the float 9, and its weight is compensated by the force of the spring 4, the torque which is transmitted to a measuring pulley 3, and the whole system is in equilibrium. When changing the level of H1the equilibrium is disturbed and the float 9 by increasing or decreasing the buoyancy force is moved up or down to the equilibrium state, i.e., duplicates of change of the controlled level H1oil in the tank 1.For level measurement of H2produced water p is the weakening effects of the stopper mechanism 8 on the axis 7, where is the ballast wheel 5 and 6 attached to them flexible bodies 12 and 13. The load 14, which is suspended on flexible bodies 12 and 13, is lowered under its own weight on the float 9, changing its weight.The change in mass of the float 9 to the preset value provides the conditions for the aspirations of the entire system to equilibrium at the interface of oil and water (see drawing). After equilibrium is the reference level H2produced water, which is used to determine the net amount of oil in the tank 1.After the reference level H2the sensor is again switched to the constant control of the upper level H1why, the rotating axis 7, raise the load 14. After reaching the load 14 very top position of the axis 7 is now the mechanism 8. The float 9 under the influence of buoyancy force returns to the equilibrium condition at the interface of the oil with air.Thus, the reconstruction of the mass of the float in the proposed transmitter is made, as in the prototype, by means of additional ballast. However, the amount required for this linear displacement of the float is determined not by the value of the level H1and the difference, thus, to solve the problem: to increase the efficiency of determining the amount of the controlled fluid. In addition, the invention simplifies the installation of level gauge on the tank and allows the use of the proposed sensor as not only stationary, but also a portable measuring device. Level transmitter for liquids containing a measuring pulley, float associated with the pulley steel tape, a balancing mechanism in the form of a spring constant torque and the ballast, wherein the ballast is made in the form of goods of a given mass, suspended coaxially with the float on the flexible organs that are attached to the ballast wheels mounted on the axle, provided with a locking mechanism.
FIELD: instrument-making industry, possible use for measuring level and density of liquid in closed volumes.
SUBSTANCE: device has perforated pipe, inside which float is positioned, measuring block and temperature indicator. System for moving the float is made in form of stepping reversing electric engine, drum with cable, connected to float, and guiding roller, mounted on tension transformer. Measuring block is made in form of controlling microcontroller, first input of which is connected to output of tension transformer, second output - to output of temperature indicator, and output - to input of reversing step electric engine.
EFFECT: improved precision, reliability and expanded measuring range.
FIELD: engineering of devices for measuring level of liquid in reservoirs.
SUBSTANCE: level meter includes float made in form of central-symmetric rotation body, having necks on end of longitudinal axis, scale for measuring level, and connected to reservoir body by links. Links are partially wound around necks and held on lower and upper points of reservoir. Also, level meter has third flexible link, one end of which is wound at the center of float, and other end is connected to counterweight, having level coefficient and positioned in guide positioned outside the body of reservoir.
EFFECT: engineering of float level meter for large reservoirs, including those filled with dark liquid.
FIELD: instrument engineering.
SUBSTANCE: device has level measuring float disposed in vertical inside holed pipe, converting member, temperature detector, and measurement unit. Device also has hollow washer provided with bridge which washer is connected with protection pipe, density-measuring float mounted at lower end of level measuring float for vertical movement, and system for displacement of density-measuring float. Level-measuring float is made in form of tube. Converting member is made in form of resistance strain gauge conjugated with level-measuring float. Measurement unit is made in form of control microcontroller. System for displacing level-measuring float is made in form of ferromagnetic disc fastened to density-measuring float and to solenoid connected with output of control microcontroller.
EFFECT: simplified design; improved efficiency of measurement.
FIELD: instrument engineering.
SUBSTANCE: device can be used for measuring density and level of liquid in closed rooms. Device has float made in form of hollow cylinder which has lower end to be air-tight closed; protecting pipe with holes in top and lower ends; float disposed inside the pipe; strain gauge converter, flexible rope connected with float and strain gauge converter; microcontroller provided with analog-to-digital converter which is connected with output of strain gauge converter. Device also has stepping reversing motor with micrometer screw fastened to shaft of the stepping motor, bracket with guide lath which is mounted in top end of pipe. Micrometer screw is connected with strain gauge converter, which is mounted onto guide lath for vertical movement.
EFFECT: widened functional capabilities.
FIELD: instrumentation engineering.
SUBSTANCE: invention can be used in different branches of industry for measuring liquid level, flow rate of liquid and limiting filling of liquid in to reservoir. Proposed transmitter contains housing made in form of tube and float with magnetic liquid. Hollow rod is installed coaxially inside housing forming sealed space with housing. Said space accommodates measuring winding located on surface of rod and containing one or several sections of turns. Each section of turns is electrically connected with signal receiver and it contains more than one turn. Float installed inside rod has carrier made of material with reservoir buoyancy relative to medium under checking. Moreover, carrier has closed or open space accommodating magnetic liquid.
EFFECT: enlarged operating capabilities of device.
2 cl, 2 dwg
FIELD: engineering of devices for measuring level of liquid using ultrasound waves.
SUBSTANCE: level meter contains pressurized tube 1, ultrasound transformer 2 mounted at the end of wave duct 3, float 4 with constant magnet 5, measuring winding 6, generator 7, amplifiers 8, 9, impulse generator 10, key 11, constant voltage stabilizer 12, communication line 14, resistors 13, 15, direct current voltage source 16, solving block 17, transformer 18 and capacitor 19. as communication line coaxial wire may be used in level meter, by means of which powering of elements and transmission of information signals are organized, providing an advantage when using device to create multi-channel systems for controlling levels of liquid products.
EFFECT: simplified construction, increased reliability of device and increased precision of measurements.
FIELD: the invention refers to measuring and transformational technique and is designed for using in quality of a mobile measuring device for measuring and control of liquid highly explosive medium.
SUBSTANCE: the level meter has a body 1, a directional tube 2 out of non-magnetic material, a magnetostrictive acoustic line 3 with a wave reflector 4 and a stabilizer 5 of tension and twisting placed in a discrete filler 6 with small surface friction, an input and output signal electroacoustic transformers 7,8, a float-level element 9 with a constant magnet 10, a limiter 11 of transferring, a working medium 12, a recording generator 13, a reading amplifier 14, a calculation block 15, an indication block 16 and a control bus-bar 17. The changing of the level of liquid 12 in a working cavity of the bode 1 of the arrangement call transferring of the float-level element 9 with a magnet 10 relatively to the acoustic line 3. This reflects dimension of a time interval of the level formed along the acoustic section of the primary transformer with the aid of the recording generator 13 and the reading amplifier 14 which transforms with the aid of the calculation block 15 into a binary code and is reflected by the indication block 16. The technical result is increasing of reliability of the measuring transformation of the level and expansion of technical application.
EFFECT: increases noise immunity and explosion safety of the measuring transformation of the level.
FIELD: the invention refers to measuring technique and is designed for using in technological systems for measuring and control of liquid highly explosive medium in quality of a mobile device.
SUBSTANCE: the level meter has a body 1, a directional tube 2 out of non-magnetic material, a float-level element 3 with a constant magnet 4, a limiter of transferring 5, a working medium 6, U-shaped acoustic line 7, an input and output signal electric acoustic transformers 8,9, a recording generator 10, a reading amplifier 11, a calculation block 12, an indication block 13 and a control bus-bar. At submerging of the body 1 of the level meter into the working medium the position of the float-level element 3 with the constant magnet 4 changes relatively to the U-shaped acoustic line 7. This is reflected on the positions in the time field of information signals excited and read by the input and output electric acoustic transformers 8,9 in the medium of the acoustic line 7, and also on the result of the digital coding level hx fulfilled by the indication block 13 in the shape of light (sound) information.
EFFECT: increases reliability of the measuring level of transformation and explosion safety at the work with liquid medium, increases noise immunity and expands the field of technical usage.
FIELD: engineering of devices for measuring and monitoring level of liquid substances.
SUBSTANCE: ultrasound gage-indicator contains body 1 with float element 2 and acoustic duct 3 made of magnetostrictive material with reflecting load 4 on its free end, signaling electro-acoustic transformer 5 with permanent magnet 6, inquiry generator 7, reading and recording amplifiers 8,9, computing block 10, indication block 11 and control bus 12.
EFFECT: increased precision and resolution during operation under highly explosive conditions.
FIELD: measuring technique.
SUBSTANCE: liquid level meter comprises cylindrical housing (2) whose inner space is in communication with the liquid through passages (5). Float (10) mounted in housing (2) is coated with a mirror layer. Emitter (11) and receiver (12) of radiation are connected with the space of cylindrical housing (2) through optical switch (13) made of a disk provided with ports. The surface of the disk is coated with a reflecting layer. The optical switch has corner reflector. Unit (15) is connected with the emitter (11) and receiver (12) of radiation and drive (14) for rotating the optical switch. The liquid level meter is additionally provided with step cylindrical nozzle (6) having base (7) for fastening to the neck of the reservoir, second corner reflector, and glass baffle (8) that separates hollow cylindrical nozzle (6) into stages. The small diameter stage receives tube (1) provided with housing (2) of the liquid level meter. The ring space between the tube and the housing is closed by baffle (3) with reflecting layer (4) on its inner side to prevent a contact with the liquid. The large diameter stage of cylindrical nozzle (6) receives optical switch (13) one port of which receives the first and second corner reflectors. Emitter (11) and receiver (12) of radiation and drive (14) of optical switch (13) are mounted on base (7) of the step cylindrical nozzle (6).
EFFECT: enhanced precision.