(57) Abstract:Usage: the invention is used for level measurement of liquids in closed containers. The essence of the invention: transmitter containing a tubular rod, a float, a permanent magnet and an electrical circuit including the switch, at the ends of the rod set, rollers connected with a flexible coupling, the bottom roller is connected to the float with mixed center of mass about an axis of rotation, and the upper roller is associated with a pointer with a fixed permanent magnet, the reed switch is fixed at the top of the rod with the opportunity to interact with the magnet. 1 C.p. f-crystals, 1 Il. The invention relates to the field level measurement of liquids in closed containers.Known sensor for measuring the level of gasoline in closed containers at a refuelling point (1), made in the form of a tubular rod with put to it by the dictates inserted into the pipe gage hatch, and level indicator. The level of gasoline is determined by the boundary of the wetted part of the bar.The main disadvantage of this sensor is the inaccuracy of measuring the level, because it is difficult to visually define the boundary between the wetted and dry part of the rod.Know what the form of a tubular rod), inside of which is placed a float gauge, a permanent magnet, the reed switch associated with a light indicator, a source of power.The main disadvantage of this device is that you cannot use it for liquid level measurement in tanks containing flammable vapors combustible materials (e.g. gasoline) due to the presence of conductive circuits located inside containers, as well as the complexity of the design.The technical result of the invention the expansion of technological capabilities, improve fire safety and simplifying the design.This result is achieved in that in the transmitter containing a tubular rod with a scale, the float is placed inside the rod, a permanent magnet and an electrical circuit including a power source, an electric light bulb and the switch, put the upper and lower rollers are covered with a flexible coupling, the indicator rod attached to the axis of the upper roller at the top of the rod, the float is installed freely in a balanced position at the bottom of the rod and connected with the lower roller, the axis of which is offset from the center of mass of the float in a position in which the vertical plane, prohodymosty magnet fixed on the index rod, the reed switch is installed along the axis of the rod with the ability to interact with a permanent magnet in the horizontal position of the float, and an electrical circuit mounted on the upper part of the rod; the float is made in the form of a cylinder with a shank.The drawing shows a General view of the sensor at the moment of contact of float fluid. The dashed line indicates the position of the sensor horizontal float position corresponding to the time for reading on the scale level of a liquid in a closed container.This marked:
And the direction to move the rod inside the tank;
B and In the direction of rotation, respectively, of the index rod with a magnet and float;
And the distance from the measuring base of the guide sleeve of the tank to the axis of the float is in its horizontal position:
E the distance from the bottom of the tank to the end of the sleeve;
K is a constant for the sensor is equal to the distance from the liquid level to the axis of the float is in its horizontal position. This value characterizes the degree of buoyancy of the float in the fluid and is equal to the height of the unflooded part of the float below the axis of the float;
e the amount of the axis displacement of the float from the center of mass is the location of the float, because in this position more clearly reveals the nature of the displacement axis, float);
X read the size of the liquid level (in the horizontal position of the float).The sensor consists of a tubular rod 1 with a scale that is inserted into the hole of the sleeve 2, which is fixed on the neck of a vessel 3, the float 4 with roller 5 mounted on the axis at the bottom of the rod 1, the upper roller 6 with indicator rod 7 mounted on an axis in the upper part of the rod 1, and a flexible connection 8, covering the rollers 5 and 6. At the top of the rod 1 on the bracket 9 is mounted an electric signal device consisting of a battery (batteries) 10, light bulbs 11 and sealed contact (reed switch) 12. At the end of the index rod 7 is fixed a permanent magnet 13 with the possibility of its interaction with reed contact 12 when rotating along arrow B in an upright position. The electrical circuit is enclosed in a casing 14. The float 4 is made in the form of a cylinder with the shank 15. When the float 4 is freely balanced condition, and the axis of the roller 5 are offset from the center of mass of the float in a position in which the vertical plane passing through the axis of the roller, is located towards the rear of the center of mass puplinge 1 thus, so when the horizontal position of the float 4 index rod 7 with the magnet 13 were placed in sealed contact 12 in the area of providing actuation (closure of the contacts of the reed switch.The operation of the transmitter is as follows: when lowering the bar 1 down arrow And through the guide sleeve 2, the float 4 is freely balanced downward position due to the displacement of the axis of rotation (the value of e 1 3 mm). Since touch float liquid he begins to gently rotated along arrow B, transmitting the rotation of the arrow B to the roller 6 with the index rod 7. Upon further lowering of the rod 1, the operator monitors the movement of the index rod 7. When the float will be in the horizontal position (the position sensor is shown in dashed lines), a permanent magnet 13 will close the contacts of the reed switch 12 and light bulb 11. At this point, the operator reads the size of the scale bar. The scale on the rod is positioned so that when opiranii the lower end of the rod in the bottom of the tank zero of the scale was located in the plane of the measuring end of the sleeve 2. In this case, the read size X on the scale will be equal to the difference between the distance E from the bottom of the tank to the upper end of the sleeve and the size is of ASCII satisfies the control of the liquid level from the end of the sleeve 2, in this case, the zero of the scale is located on the underside of the bar.The use of this sensor increases fireproof conditions for measuring liquid levels in tanks containing pairs legkonastraivaemy liquids, and thereby expanding the technological capabilities to use the device. In addition, the proposed sensor is simple in construction and easily adjustable by prescriptie (rotation) of the index rod relative to the upper roller. 1. The sensor containing the tubular rod with scale, the float is placed inside the rod, a permanent magnet and an electrical circuit including a power source, an electric light bulb and the switch, characterized in that it introduced the upper and lower rollers are covered with a flexible coupling, the indicator rod attached to the axis of the upper roller at the top of the rod, the float is installed freely in a balanced position at the bottom of the rod and connected with the lower roller, the axis of which is offset from the center of mass of the float in a position in which the vertical plane passing through the axis of the lower roller, located behind the center of mass of the float relative to the direction of rotation, the permanent magnet scrm magnet in the horizontal position of the float, and an electrical circuit mounted on the bar top.2. The sensor under item 1, characterized in that the float is made in the form of a cylinder with the shank.
FIELD: measuring engineering.
SUBSTANCE: fluid level meter comprises measuring rod provided handle and thrust journal and measuring device that has the float made of a hollow torus of controllable density and locking L-shaped plates. In the working position, the float moves along the measuring rod only in one direction: from the thrust journal to the handle. When rising the measuring rod, the float is locked at a level of the interface between the fluids of different density.
EFFECT: enhanced reliability.
FIELD: engineering of devices for measuring level of easily evaporating, colorless liquid and taking samples of the same, for example, in reservoirs, cisterns and wells.
SUBSTANCE: level meter - sample taker for liquid contains hollow transparent measuring rod with applied measuring scale. In lower part measuring rod is connected to valve assembly, consisting of hollow body with locking element inside and its massive base, connected through lower input aperture of body to cross-shaped anvil and extender. Value of gap between locking element and body of valve assembly is adjusted by threaded connection between base of locking element and the anvil depending on viscosity of the liquid being studied.
EFFECT: simultaneous taking of sample from given depth and determining of liquid level, increased comfort when using the device.
FIELD: measuring equipment engineering, possible use for controlling unloading of free-flowing material.
SUBSTANCE: device includes electric engine with reducer, drum, bob, containing cable with sensitive element in form of load, drum rotation angle sensor, electromagnetic latch, electric engine load elements in form of serially connected resistor and diode, electric engine current indicator and controller, containing comparator, indication block, control block, counter, and connected by first input to electric engine current indicator, by second input to rotation angle indicator, by first output to electric engine winding, by second output to electromagnetic latch. Bob is provided with additional sensitive element having at least two symmetric peripheral contact portions and positioned on the cable coaxially with first sensitive element, controller being provided with two additional comparators, additional counter and electronic-computing device, while load elements of electric engine are connected in parallel to electric engine-current indicator circuit.
EFFECT: device makes it possible to control process of unloading of free-flowing material prone to forming a crater in remaining material after each dispensing, with high precision and low material costs.
FIELD: the level meter is applied for evaluation of the state of the surface sources of water and for operational registering of the volumes of fuel and reagents in warehouses.
SUBSTANCE: the arrangement has a sounding rod of small diameter, a handle, an abutment, a measuring device and two clamps. The measuring device freely travels along the sounding rod and is fixed with the clamps at the necessary section. The measuring device has in its cylindrical body cup cavities located evenly on a helical spiral. Due to this location of the cavities the error does not prevail 2 mm. Relatively small length of the measuring device and its mobility provides convenient discharge of the measured liquid from the cup cavities for following metering.
EFFECT: increases accuracy of metering of the levels of volatile liquids in different storages at simultaneous easing of conducting the measurements.
FIELD: physics; measurement.
SUBSTANCE: present invention pertains to measurement technology and can be used for checking fuel remaining in vehicle tanks, for measuring fuel used for a specific journey, as well as for checking the filling level of fuel in tanks at filling stations. There is no need for keeping the vehicle in a strict horizontal position. Three measurements are taken in three different predefined directions of movement of the probe of the device and three different points of contact with the surface of the fuel are obtained. From these points, it can be considered that, the tank is inclined to the horizontal, and the amount of remaining fuel can be determined. This is made possible by that, the invention employs a contact sensor besides the probe. The contact sensor is made from a probe, consisting of a pipe and a pressure sensor, located at the free end of the pipe. There is also a guide for movement of the probe relative the tank inlet. Measurements are taken from the inlet of the tank to the surface of the fuel.
EFFECT: simplification of checking fuel remaining in vehicle fuel tanks.
SUBSTANCE: testing process involves from filler to fuel surface thus applying related fuel contact detector. Herewith it is not required to observe strict horizontal position of the vehicle. Three measurements in three various directions of probe travel are considered to be enough to receive three various fuel contact points indicating horizontal tankage and fuel remained.
EFFECT: development of easy-to-use and universal method of fuel test in fuel tank, thus to be automated.
SUBSTANCE: invention relates to non-ferrous metallurgy field. According to method it is implemented voltage feeding to electroconductive refractory rods, used for slag heating and setting adjusting of current value. It is displaced rod and implemented continuous measurement and comparison of current value through rod with setting. At equality of measured value of current to setting value it is fixed top surface of slaggy or metallic phase of melt in tank of iron-and-steel furnace. In the capacity of electroconductive refractory rod it is used graphitic rod or electrode, used for electroarc heating of melt in tank of iron-and-steel furnace. After achievement of equality of current setting to corresponding measured current values it is checked equality to zero of the first current derivative.
EFFECT: increasing of accuracy and reliability of control.
3 cl, 1 dwg
FIELD: measurement equipment.
SUBSTANCE: invention refers to guiding devices for oil-level indicators, in particular it refers to guiding devices for oil-level indicators installed in internal-combustion engine. Guiding device for oil-level indicator of internal-combustion engine (1) contains tube (7) fixed by one its end on engine (1) and by the other end on tip (9) of chamfer (8) of tube (7), at that according to invention tube (7) is designed flexible provided with base (11) for stiffening.
EFFECT: elimination of disadvantages typical for level of equipment, such as distortion of guide tube as affected by oil-level indicator, leakiness and ineffective mounting of guiding tube on engine.
9 cl, 4 dwg
SUBSTANCE: method involves mounting onto a structure over wastes of a fixed block with a circular furrow for a thread, one end of which is attached to a sphere and the other to a marked counterweight whose weight Gc is less than the weight of the sphere Gs by a value g, which enables immersion of the sphere into the wastes while simultaneously raising the counter weight. The height of the block and the length of the thread enable immersion of the sphere into the wastes by a given depth h, which is greater than the thickness of the hydrocarbon phase δ lying above water, higher than their boundary surface and prevent immersion of the counterweight into the wastes. The sphere is immersed into the wastes and the height of the mark of the counterweight over the surface of the wastes is recorded at the beginning of immersing the sphere into the hydrocarbon phase and at the beginning of increasing ascending speed of the counterweight using the sphere, which takes place when the sphere is immersed beyond the phase boundary. The distance between the recorded positions of the mark of the counterweight, i.e. thickness of the hydrocarbon phase δ, is measured. The device also has two supports, one which limits rise of the sphere into the atmosphere and the other - the counterweight, and a reference mark fixed over the wastes. When determining thickness of the hydrocarbon phase δ by lowering the sphere at a given depth h with constant length of the thread, the following condition is satisfied: h+a+b-2r=c-d-e, as well as the condition δ=f+2r-6-a, where a is elevation of the reference mark above the surface of the oil wastes; 6 is elevation of the support of the sphere above the reference mark; r is radius of the sphere; c is elevation of the support of the counterweight over the reference mark; d is elevation of the mark of the counterweight above the reference mark when the sphere is placed on its support; e is distance measured on the height from the support of the counterweight to the mark on the counterweight when it is on the uppermost position; f is height of the counterweight with the mark when the sphere is lowered from the support to the boundary surface of the hydrocarbon phase and water, i.e. before increase in ascending speed of the counterweight.
EFFECT: more efficient determination of thickness of a hydrocarbon phase owing to easier operation and simpler design of the device and increased ease of use.
10 cl, 2 dwg
SUBSTANCE: measuring tape is fitted with an indicator consisting of an electronic circuit connected through contacts with a measuring tape and a reservoir housing. If there is water in between, the circuit closes and the light-emitting diode of the indicator lights up. In order to detect presence of water, the measuring tape load is lowered to the bottom of the reservoir and the height on the tape is recorded. The boundary surface of media is determined by switching off of the light-emitting diode when the load is taken out of the reservoir in backward motion.
EFFECT: high accuracy of measuring the level of water under a product with low material and time consumption.
FIELD: the invention is designed for measuring of the environmental flow rate.
SUBSTANCE: the rotameter has a conical tube with a scale, a non-magnetic float of the plate or of the disk type with constant magnet. The float has possibility to travel along the central guide in the shape of a thin wall ferromagnetic tube. Inside it there is a current distributor connected to the current impulses excitation generator. The ends of the ferromagnetic tubes are located in absorbers, the upper one of them is fixed on the body of the rotameter. From the side of the lower absorber left free and provided with a load a reading element in the shape of a magnetic field transformer( for example in the shape of an induction coil) is located near the central guide. The reading element is connected through a processing amplifier to the first input of a time interval separator block to whose second input an output of the impulse generator is connected.
EFFECT: increases accuracy of measuring at changing the temperature of the flow.
3 cl, 1 dwg
FIELD: measuring technique.
SUBSTANCE: rotameter comprises conical tube with local scale and nonmagnetic float that receives a permanent magnet. The unmovable central guide made of nonmagnetic tube made of corrosion-protective material and the tube are axially aligned. The tube receives the ferromagnetic conductor with dampers at its ends and reading unit connected with the amplifier-generator of reading pulses. The ferromagnetic conductor is connected with the generator of exciting pulses. The output parameter of the rotameter is the time interval proportional to the displacement of the float.
EFFECT: enhanced resolution.
FIELD: inspection and regulation of level of liquid.
SUBSTANCE: level of liquid signaling device has float, magnet mounted on float, lever made for turn around horizontal hinge, float's stroke restrictor and reed mounted for being switched from magnet related to lever. No less than three magnets are related with lever. Magnets are magnetized at the same direction and they are remote from axis of hinge and are mounted with angular shift relative each other. The shift provides continuous area of interaction of float with reed. Moreover float is made rotating and it is integrated with lever into single structure element; as the lever of the second kind is used. Axis of hinge is parallel to axis of magnetization of magnet tightly connected with end of lever, and to axes of reeds mounted for in-turn entry off float into interaction with them and for simultaneous interaction with at least two reeds and as well at situation when float makes contact with restrictor and the interaction is performed with single reed only.
EFFECT: widened functional abilities; widened area of application; reduced sizes; simplified design; improved precision; higher reliability of alarm.
SUBSTANCE: proposed device comprises case 1 with cylindrical split bush 3 secured thereto and connected via flexible mechanical link 4 with sensitive element 5 composed by float or buoy. Lateral surface of bush 3 made of spring steel or alloy has circular rows of through cut-outs 6 between which rows of solid flat rings 7 are arranged over bush 3 height. Inside of bush 3 are opposed permanent magnets 9 in the area of rings 7 and rigidly secured therein. Hall sensor 11 is arranged between magnets 9 in the case of nonmagnetic material 10 connected to measuring unit 12. Bush 3 acts as said spring element responding to displacement of sensor 5.
EFFECT: higher precision of measurement.
7 cl, 3 dwg