Method for evaluation of geometrical dimensions of pipe section wall and weld seams defects according to ultrasonic intra-pipe defectoscope data with the help of related indications search

FIELD: measuring equipment.

SUBSTANCE: invention can be used: for evaluation of geometrical sizes of a pipe section wall and weld seams defects. Core of the invention is that according to an ultrasonic intra-pipe defectoscope data with the help of related indications search evaluated are the length, the width and the depth of a defect.

EFFECT: provided is the possibility of evaluation of geometrical parameters, classification of type of a defect in a pipe section wall and weld seams at reduction of labour costs for processing a separate section of an oil pipeline and at reduced time for detecting hazardous defects.

1 cl, 4 dwg

 



 

Same patents:

FIELD: measurement equipment.

SUBSTANCE: device for reproduction and transmission of mass concentration units of oxygen and hydrogen in liquid media is based on subsequent preparation of standard liquid solutions and determination in them of content of dissolved oxygen or hydrogen. The device includes a working chamber, a temperature control system including a thermostat and a heat exchange circuit, a standard barometer, a standard thermometer with a sensor submerged into the medium of the working chamber, and a mixer. Besides, the device is provided with oxygen and hydrogen analysers; the working chamber is designed for high gas pressure and provided with an inspection hole and mounting seats for electrochemical and optical sensors of oxygen or hydrogen analysers, to which mass concentration units of oxygen and hydrogen are transmitted. Besides, the device is provided with a supply system of gas mixtures, which consists of bottles with control gas mixtures, an inert gas bottle and a control system of flow and flow rate of control gas mixtures, which includes a gas line, a bubbler for pumping of gas mixtures to the working chamber, fine adjustment valves installed at the inlet and outlet of the working chamber.

EFFECT: enlarging functional capabilities and improving calibration accuracy of analysers.

3 cl, 1 dwg

FIELD: measurement equipment.

SUBSTANCE: invention relates to analytical chemistry of food production facilities. The method to assess safety of packing polymer materials for thermal processing of vacuumised food products includes formation of a polymer material in the form of a packet, its vacuumising, sealing and thermal processing, after which the packet is thermostatted at room temperature, 5.0 cm3 of dried air is pierced into it with a syringe, and in 5 minutes, not taking the syringe out, they take 3.0 cm3 of air. The produced sample is introduced into a tight cell of detection in a "piezoelectronic nose" device, which comprises an array of seven mass-sensitive piezosensors. They record variation of signals of piezosensors in pairs of equilibrium gas phase of the sample for 60 s with the interval of 1 s, the highest responses of piezosensors are formed into a mass-aromogram of maxima, the area of the mass-aromogram is calculated. Under identical conditions they analyse the standard sample of the polymer material. Assessment of safety of the polymer material is carried out by comparison of the area of mass-aromograms of the analysed sample and the standard sample. Difference of the area of mass-aromograms by more than 30.01.0% certifies non-compliance of the sample with the standard of the polymer package.

EFFECT: invention makes it possible to assess the level of possible emission of highly volatile compounds from polymer materials in process of thermal processing with increased accuracy and reduction of analysis time.

2 dwg, 1 tbl

Conductometer // 2549246

FIELD: measurement equipment.

SUBSTANCE: conductometer comprises an alternating voltage generator (1), the outlet of which is connected to a reference inlet of a converter (2) code-voltage and to a transformer differential conductometric converter (3). The transformer converter (3) comprises the first (4), second (5) and third (6) transformers, the first communication element (8), covering cores of the first (4) and third (6) transformers, and the second communication element (11), covering cores of the second (5) and third (6) transformers. It also comprises the first wire communication winding (9), between the first (4) and third (6) transformers, the outlets of which are connected to the first terminal block (14), and the second wire communication winding (12), between the second (5) and third (6) transformers, leads of which are connected to the second terminal block (15). The first lead of the first winding (7) of the first transformer (4) is connected to the outlet of the alternating voltage generator (1), the reference inlet of a synchronous detector (17) and the reference inlet of the converter (2) code-voltage, the outlet of which is directly connected to the first lead of the first winding (10) of the second transformer (5). The control inlet of the converter (2) code-voltage is connected to the outlet of a control unit (18). The first lead of the first winding (13) of the third transformer (6) is connected to the inlet of a selective amplifier (16), the outlet of which is connected with the control inlet of the synchronous detector (17), the outlet of which is connected in series with a control unit (18), a microcontroller (19) and a digital indication device (20). The second leads of the first windings of all three transformers are connected to the common bus of the device.

EFFECT: increased accuracy of measurement and expansion of functional capabilities, possibility of precision measurement of active conductivities and resistances.

1 cl, 2 dwg

FIELD: measurement equipment.

SUBSTANCE: device comprises a speed sensor, an electrode sensor and a voltage source. It is also fitted with a microcontroller, an information input and output device, a microampermeter, an adjustable inductance coil, a greasing device, a resistance and a key, and the electrode sensor is designed as a capacitor comprising two semi-cylinders isolated from each other. The key is connected to the microcontroller the outputs of which are connected to the voltage source, the adjustable inductance coil, the greasing device and to the information input and output device, and inputs to the speed sensor, the microampermeter and the information input and output device. The resistance, the condenser, the adjustable inductance coil, the voltage source and the microampermeter are connected in series. The voltage source is a high frequency voltage source.

EFFECT: improvement of efficiency and decrease of error of determination of quality of extended products.

2 cl, 1 dwg

FIELD: measurement equipment.

SUBSTANCE: measuring vessel with a capacitance sensor installed in the form of a multi-electrode flat-parallel air capacitor, to which a measurement capacitor of available capacity is connected, filled with the investigated gas, and the value of temperature and pressure are recorded. High DC voltage is supplied to the capacitance sensor installed in the measurement vessel and to the measurement capacitor of available capacity. The outlet voltage is measured on the measurement capacitor, and moisture content of the investigated gas is determined according to the temperature moisture characteristic of the sensor.

EFFECT: increased sensitivity.

2 cl, 6 dwg

FIELD: measurement equipment.

SUBSTANCE: sensor of the device represents a thick-walled tube-dowel 1, made of a dielectric plastic material, on the outer cylindrical surface of which there are current electrodes 2 and 3, split by plastic dielectric gaskets 4 and on the reverse side. The tube-dowel with electrodes is inserted into a hole 6, previously drilled in the solid medium, and is spaced in it with a screw 10 screwed into it. Gaskets 4 and 5 are installed perpendicularly in a current line 8, flowing in the solid medium. A current recorder 9 is connected between current electrodes 2 and 3. A rotary lever-indicator 11 is fixed on the upper part of the dielectric tube perpendicular to the split of the tube-dowel.

EFFECT: increased accuracy of current density measurement in local volumes of solid media.

2 cl, 1 dwg

FIELD: textiles, paper.

SUBSTANCE: invention relates to textile industry and can be used in control systems of transporting the textile material during technological processing in the form of a tow. The method of detecting a seam of the textile material processed in the form of a tow comprises placing the movable textile material inside the induced coil of the oscillating circuit, amplification and detection of the high frequency voltage at the output of the generator and forming while reducing voltage at the output of the amplifier-detector of the pulse of required duration for safe operation of the actuator. And the seam of the textile material is provided with a conductive label, the amplitude of high frequency voltage is set from the conditions of the required sensitivity at the output of the generator, the voltage is converted at the output of the amplifier-detector and it is compared with the driving voltage, and the resulting difference of voltage is integrated, and the voltage is applied at the output of the integrator to stabilise the amplitude of high frequency voltage at the output of the generator, and the integration process is interrupted for the period of the formed impulse action. The conductive label is used, for example, as a metallised thread, which is used for sewing the textile material pieces in the continuous web.

EFFECT: increase in reliability of detection of the seam of textile material processed in the form of a tow and providing automatic compensation of external disturbing effects.

2 cl, 1 dwg

FIELD: textiles, paper.

SUBSTANCE: invention relates to the field of engineering for light industry and can be used to create the systems for detecting metal particles in textile materials, in nonwoven substrate in production of synthetic leather, felt, etc. The method of detecting metal particles in the displaced fibrous material consists in placing the displaced fibrous material in the working area of induced coil of oscillating circuit in which high-frequency oscillations are created using the generator. Further, amplification and detection of high-frequency output voltage of the generator is carried out. At that at the output of the amplifier-detector the impulse of the required duration for reliable operation of the actuating mechanism is formed. The output voltage of the amplifier-detector is compared with driving voltage. The resulting voltage difference is integrated, and the voltage is applied at the output of the integrator to stabilise the amplitude of high-frequency voltage at the generator output, and the integration process is interrupted for the duration of the impulse formed.

EFFECT: increase in reliability of detection of metal particles in the displaced fibre material and providing automatic compensation of external disturbing actions.

1 dwg

FIELD: textiles, paper.

SUBSTANCE: invention relates to the field of engineering for light industry and can be used to create systems to detect metal particles in textile materials, in nonwoven substrate in production of synthetic leather, felt, etc. The method of detecting metal particles in the movable fibrous material consists in placing the movable fibrous material into the workspace of induced coil of the oscillating circuit in which using a generator the high-frequency oscillations are generated. Then, amplification and detection of high-frequency voltage at the output of the generator is carried out. And at the output of the amplifier-detector the impulse of the required duration is formed for safe operation of the actuator. From the conditions of the required sensitivity the amplitude of high-frequency voltage is set at the output of the generator, the voltage is converted at the output of the amplifier-detector and it is compared with the driving voltage. The obtained voltage difference is integrated and the voltage at the output of the integrator is used for stabilisation of the amplitude of high-frequency voltage at the output of the generator. And the process of integration is interrupted at the time of formation of the impulse for the time interval, the value of which is defined as a functional dependence on the linear velocity of the fibrous material, and the process of integration is renewed at the end of the pulse and the time interval of interruption of the integration process, and at the time of bringing the circuit into operation state the actuation of the actuator is blocked for the time interval, obviously longer than the duration of damped transitory processes in most inertial node of the circuit.

EFFECT: increase in reliability of detection of metal particles in the movable fibrous material and providing automatic compensation of external disturbing effects.

1 dwg

FIELD: chemistry.

SUBSTANCE: method of determining chlorobenzene in natural and waste water using gas chromatography and equilibrium vapour analysis includes determining chlorobenzene on a chromatographic capitally column in a carrier gas current which is nitrogen; generating and detecting the investigated ions formed in a flame with a flame-ionisation detector. The method also includes preparing a basic solution using a more viscous ethylene glycol solvent, hence the basic solution is well preserved for 2 months at temperature in the range of -2C to -10C; preparing calibration solutions for chlorobenzene concentration in the range of 0.0003-0.02 mg/dm3; sample preparation, calibrating the chromatograph by perforating the vapour phase of the prepared concentrations; plotting a calibration curve; sample preparation for the analysed water samples; perforating the vapour phase into the evaporator of the chromatograph. The obtained data are processed using ChemStation software which comes in a set with the MAESTRO 7820A chromatographic kit, and qualitative identification and quantitative content of the determined substance is obtained.

EFFECT: improved consistency and accuracy of analysis, shorter duration of the method and easier analysis in environmental monitoring conditions.

6 tbl, 2 dwg

FIELD: thermal and nuclear power stations; meter calibration in extremely pure water of condensate type and power unit feedwater.

SUBSTANCE: for pH-meter calibration ammonia whose concentration varies by 1.5 - 2 times is dosed in working medium. Electric conductivity and temperature of working-medium H-cationized sample are measured. Measurement results are processed in computer with aid of set of equations characterizing ionic equilibrium in source sample and H-cationized samples. Calculated pH value is compared with measurement results.

EFFECT: enhanced precision and reliability of meter calibration in extremely pure waters.

1 cl, 1 dwg, 1 tbl

FIELD: mechanical engineering.

SUBSTANCE: device has housing provided with three cylinders made of a dielectric material. The housing receives the cylinder with a piston.

EFFECT: improved design.

5 dwg

FIELD: agriculture and soil science; evaluating water-physics properties of soils.

SUBSTANCE: porous probe communicating with water-filled tank is driven into soil, cathode is inserted in probe and anode, in soil. Voltage is applied to electrodes from dc power supply and soil moisture potential preventing water transfer from tank to soil is determined by measuring current between them.

EFFECT: reduced single measurement time due to eliminating escape of significant amount of water from measuring instrument.

1 cl, 1 ex

FIELD: investigating or analyzing materials.

SUBSTANCE: device comprises measuring section made of dielectric pipe whose inner diameter is equal to the inner diameter of the pipeline, two electrodes which form a capacitor made of segments of the dielectric pipe, mounted diametrically opposite, and connected with the electronic unit. The electronic unit has a self-excited oscillator whose frequency-generating circuit includes the capacitor and device for processing frequencies with the indicator. The electrodes are arranged inside the dielectric pipe of the measuring section. The transverse length of each electrode can be greater than half inner diameter of the pipeline. The longitudinal length of each electrode may not exceed half length of the dielectric pipe.

EFFECT: enhanced sensitivity.

2 cl, 1 dwg

FIELD: analytical methods.

SUBSTANCE: electrodes of piezoelectric resonator are modified with menthol phenyl salicylate vaseline oil, recommended solvent being toluene, modifier film weight 5-20 μg, drying temperature 20-35°C, and drying time 40-48 h. The following gains in aromatic amine determination sensitivity are thus obtained: for aniline, from 282 to 368 Hz-m3/g; for o-tolidine, from 68 to 78 Hz-m3/g; for 9-nitroaniline, from 136 to 125 Hz-m3/g. Reductions in relative deviation are, respectively, 6.0 to 3.2%, 7.0 to 3.6%, and 6.0 to 4.3%, sensor response time is decreased by 5 times, regeneration time is decreased by 24 times, and aniline detection threshold is lowered from 0.84 to 0.11 Δ, g/m3.

EFFECT: increased sensitivity and accuracy of determination.

1 dwg, 2 tbl, 11 ex

FIELD: scanning probe microscopy.

SUBSTANCE: scanning probe microscope has sample holder, first platform, onto which case is mounted, and piezoscanner. Elastic membrane is placed between case and piezoscanner. There is unit for preliminary bringing sample and probe together, as well as housing and probe fixer. The second platform is introduced into the scanner, onto which unit for preliminary bringing sample and probe together. Base and sample holder is put together with cup by means of first hole and the second hole. Second hole is connected with inert gas source. Cup is made of chemically-proof material. Case is made to be air-proof. Locker of the probe is fastened to piezoscanner. Housing is mounted onto cup for interaction with airtight case. Aerostatic plain bearing is formed between housing and airtight case. Sample holder, cup, housing, airtight case, elastic membrane and probe locker form all together closed cavity of electrochemical cell.

EFFECT: simplified exploitation; widened operational abilities.

11 cl, 7 dwg

FIELD: measurement technology.

SUBSTANCE: detector can be used in concentration meters as positive and negative aeroiones. Aeroion concentration detector has bias voltage source and receiving probe. Detector additionally has two resistors connected in series, auxiliary electrode and electrometer for measuring output voltage that is proportional to measured concentration of aeroiones. Receiving probe has to be volumetric electrode made of metal grid inside which the auxiliary electrode is located. The latter is isolated from volumetric electrode.

EFFECT: improved functional abilities.

1 dwg

FIELD: mining industry.

SUBSTANCE: method includes mounting a sample between panels of capacitor converter of electromagnetic radiation, deforming thereof in loading device. Loading device has oppositely mounted in metallic body of loading device metallic rods, force detector and registration system. Compressing external force is applied to sample from first metallic rod through force detector body and it is destroyed due to reaction force of conic indenter of second metallic rod. Metallic body of loading device is a first plate of capacitor converter, second plate - second metallic rod, mounted in bushing of dielectric material, placed in metallic body. Stand has screen, frame, capacitor converter, loading device, force detector and registration system. Between ends of metallic rods force detector and sample are positioned. Second metallic rod is provided with conic indenter.

EFFECT: higher efficiency.

2 cl, 2 dwg

Antioxidant sensor // 2263904

FIELD: analytical chemistry.

SUBSTANCE: sensor can be used for inspecting level of oxidants and antioxidants in liquid. Device for detecting absence or presence of reduction-oxidation reactive-capable analyzed matter in water sample has electro-chemical cell with sensor chamber, first and second electrodes, hole for introducing sample into sensor chamber and reagent placed inside sensor chamber. Electro-chemical cell is designed to be removable after usage in any unique experiment. Reagent is capable of subjecting to reduction-oxidation reaction directly with analyzed matter to generate electric signal indicating absence or presence of analyzed matter. Method of detecting level of reduction-oxidation reaction-capable matter is also proposed as well as method of measurement of sulfur dioxide in sample of vine and method of producing device mentioned before.

EFFECT: improved precision.

36 cl, 4 dwg

FIELD: measurement technology; criminology.

SUBSTANCE: main and ancillary electrodes are installed before procedure of getting imprints of dust trace. Voltage applied to main and ancillary electrodes is regulated within wide high-voltage range. Device for getting imprints of dust traces has electric charge storage, main and ancillary electrodes and connecting cable of ancillary electrode, mechanical unit driven into action by muscle force of expert. Mechanical unit is connected with mechanical energy/electric energy converter which is connected with electric charge storage. Main electrode is coated with insulating dielectric film and connected with electric charge storage.

EFFECT: improved exploitation characteristics; independence on external electric power sources; reduced chance of electric current shock.

2 cl, 2 dwg

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