Method of sampling high-temperature gases and device for its realisation

FIELD: measurement equipment.

SUBSTANCE: method to sample high-temperature gases at temperatures of up to 600°C includes measurement of gas volume pulled via a sampling probe by means of aspiration, and collection of condensate with reduction of the taken sample volume to normal conditions. To produce a representative sample that characterises a source of emission, the flow of high-temperature gases is cooled down to temperature of condensation of vapours of volatile components with account of fuel consumption and modes of engine operation. Aspiration of the sample volume is carried out with pressure difference in the condensate collector and in the flow of spent gases, besides, the flow of sampled high-temperature gas is used to create the "boiling layer" from initiators of condensation of volatile components vapours. At the same time the volume of the taken sample is compared to fuel consumption and mode of engine operation, and condensate is kept in the condensate collector under tight conditions to the start of stagewise investigation of concentration of separate components. The device comprises a sampling probe, a facility to measure the volume of high-temperature gases and a condensate collector. The sampling probe is equipped with a facility to measure temperature of sampled gases, the collector of condensate of spent gases has an external vacuumised heat-shielding shell, between layers of which there is a cryogenic liquid placed, and a facility to measure condensate temperature. Ball-shaped initiators of condensation are made of chemically inert material, which is capable of absorbing water vapours in spent gases composition. The cover of the condensate collector is thermally isolated from the vacuumised heat-shielding shell of the collector of spent gases condensate and nozzles for insertion of the sampling probe and discharge of cryogenically treated gases equipped with valves. At the same time the discharge nozzle is equipped with a filtering element, and the cover of the condensate collector has a control panel interconnected with the facility to measure temperature and gas volume taken for analysis, a level indicator of the cryogenic liquid and the facility to measure temperature of collected condensate.

EFFECT: development of the method and device to take representative samples of high-temperature gases of mobile sources of toxic emissions, which contain condensing elements that require special low-temperature conditions to keep them in the sample before entering them into a measurement device.

2 cl, 1 dwg

 

The invention relates to methods and devices for sampling exhaust gases of internal combustion engines for the analysis of the technical condition of the vehicle for use as motor fuels and the impact on the security environment.

According to the classification adopted in the international standards [GOST 31370-2008 (ISO 10715:1997) the natural Gas. Guidance on sampling. M: STANDARTINFORM, 2009], the inventive method and device relate to the indirect point sampling with retrograde condensation:

- indirect sampling (indirect sampling) involves the sampling in cases where there is no direct connection between the selected gas and the analytical block";

- point sampling (spot sample): Sample a certain volume, selected from a stream of gas at a certain place at a certain time";

- retrograde condensation (retrograde condensation: the Process consists in the fact that "critical thermodynamic conditions of the gaseous mixture is secreted fluid (isothermal and Isobaric condensation)". Retrograde behavior is typical for multi-component mixtures and reflects the imperfection of their phase properties;

- representative sample (representative probe): the Sample is extracted from the total product containing components in the same proportions in which they receive the comfort in total [GOST R 52659-2006 oil and Oil products. Methods for manual sampling. M: STANDARTINFORM, 2007].

This condition can only satisfy the well-mixed liquids and gases. In ensuring the representativeness of the sample is not necessary if the object is sufficiently uniform in composition;

- isokinetic sampling (isokinetic sampling): sampling at a flow rate that provides the velocity (vnand direction of dust and gas flow entering the nozzle of the sampling, the same as the velocity (vsand the direction of flow in the pipe at the point of sampling. [GOST R ISO 9096-2006 (ISO 9096:2003) Emissions from stationary sources. Determination of mass concentration of particulate manual gravimetric method. M: STANDARTINFORM, 2006 / [Electronic resource] - Mode of access: accessed 16.02.2013];

- internal filtering method: Used when sampling wet gases, the presence of gases corrosive components and resins, high adhesion of dust, the dust collector is located inside the [GOST R 50820-95 Equipment gas and dust. Methods for determining the dust content of the gas-dust flow / [Electronic resource] - access Mode: - date of treatment 16.02.2013].

"Water condensate" means the deposition of aqueous components, transitioning from gas to liquid state. The formation of water condensation caused by factors such as humidity, pressure, pace is of atur and concentration of other components, for example sulfuric acid. The influence of these factors varies depending on the moisture entering the engine air humidity dilution air ratio of air and fuel in the engine and the fuel composition, including the number of hydrogen and sulfur in the fuel ["Global technical regulation No. 11". Introduced in the Global registry on 12 November 2009). "The testing of engines with compression ignition, which must be installed in agricultural and forestry tractors and off-road mobile machinery, with regard to the release of pollutants from these engines" / [Electronic resource] - Mode of access: http://www.unce.org/fileadmin/DAM/trans/main/wp29/wp29wgs/wp29gen/wp239registry/ECE-TRANS-180al lapplr.doc - date treatment 16.02.2013].

There is a method of cryogenic preconcentration (capture) of pollutants from the air. He is the freezing of toxic impurities by passing the contaminated air through the trap with sorbent or inert material (fiberglass, steel, or glass beads and the like) at temperatures substantially lower than the boiling point of the analyzed substances. The main component (air) passes through the trap of not holding up, and impurities are collected (concentrate, condense in the trap [Justuju, Art. Sample preparation in environmental analysis. St. Petersburg, Anatoly 2002, S. 78-79].

The method is mainly used in gas chromatography in the analysis of priority pollutants at the level of ppb-ppt. The excessive condensed water significantly complicates the process further use chromatographic method for determination of pollutants [V.G. Berezkin, Drugov Y.S. Gas chromatography in air Pollution analysis/Amsterdam, e.a.: Elsevier. 1991]. Moreover, high concentrations of contaminants are forcing researchers to apply the method of "condensation"and the "dilution" of the sample with sterile air or inert gases.

For the purposes of sampling and preparation for analysis of the composition of exhaust gases of internal combustion engines of vehicles known "Lowering the concentration of the sampler and method of sampling and lowering the concentration of the gas sample" [patent RU 2419083 G01 N 1/22, publ.: 20.05.2011, BI No. 14]. According to the invention in the gas stream is introduced chilled inert gas used for cooling the gas sample and dilution to concentrations that do not affect the accuracy of measuring instruments. The invention is based on the method of "full dilution flow", which means the process of mixing the full flow of the exhaust gas with dilution air prior to separation of the corresponding faction flow of diluted exhaust gases for analysis.

The disadvantage of this technical solution is vozmozhnosti concentration in the sample gas vapors of volatile components and components in the form of aerosol particles.

It is known device, comprising a housing with it is located in an intake pipe, a trap with mesh or ceramic filter installed on the outer surface of the hull in place of the gas inlet in the intake tube refrigerator and the associated pipe with a trap and a fridge water seal, and trap and refrigerator is equipped with individual valves for connecting them with pipes trap [patent RU No. 2011179, publ. 15.04.1994]. The pipe or the metal casing of the channel, which move the analyzed gases must be welded sealing device through which selection is made of the gas sample, and shipping samples to the analyzer by using a special water-cooled probe, to which is connected a rubber hose, inlet and outlet cooling water [Eszhanov I. a Study of the influence of the cooling rate of the gas on the formation of toxic components in the cooled probes [Text] / Yessenov, Yearistype // Young scientist. - 2012. No. 2. - P.15-18].

The disadvantage of this device is its stationarity and the inability to apply in a portable state. In addition, the disadvantage of this device is the filter located on the surface of the device body, distorting the true phase composition of the exhaust gas in the subsequent flow of gases.

Known is a device for sampling exhaust gases of motor vehicles, containing the sampler is connected to the exhaust pipe and through the input tube with a selected elastic camera, mounted in a portable device, and controlling the detection apparatus characterized in that, to simplify the device and accelerate the process control of gas composition on a moving vehicle under real road conditions selected camera are removable and fitted with a remotely controlled shut-off element, and a portable device provided with a nozzle, the output end of which is located in the same plane with the end sampler [patent RU No. 2023250, publ. 15.11.1994].

The disadvantage of this device is the inability to obtain representative samples at various engine operating conditions and the inability to prevent the occurrence of secondary chemical reactions between the components of the exhaust gas of the internal combustion engine, which is inevitable at high temperatures of the EXHAUST gas of the engine.

Known refrigerator device for sampling gas in which the condensate is one with the fridge. On the inner side of a hollow cone fixed the cold junctions of the Peltier elements, and it branches off the pipe for the selection of the measuring gas. The refrigerator is characterized by the fact that, as a generator of current consumed by the Peltier elements, provided the and the battery of thermocouples, hot junctions are located in the flue gas channel, and cold junctions in the outer space [the Application for the invention FRG No. 1297902/ [Electronic resource] - Mode of access: 189&chapter=83 - date treatment 16.02.2013].

The disadvantage of this device is the inability to collect condensate EXHAUST gas of internal combustion engine for non-stationary sources.

A device for sampling the exhaust gases of the engine to carry out sampling on a moving vehicle. The device contains provided with a cooler sampler, United with him flowmeter and distributor, select a camera, a tracking system connected to the sampler. When this select Luggage made in the form of a syringe mounted on the dispenser and is equipped with an Electromechanical actuator connected to the tracking system, with the syringe plunger is connected with the drive friction by means of a rack pull, equipped with an electromagnetic drive roller and connected to it by a hinge [Application for an invention in the UK No. 1496173, G01N 1/24, 1977].

A device for sampling dust and gas from the high temperature dust and gas flow containing

condensable components, consisting of a cooled pipe, seal and transfer mechanism, characterized in that, for the preservation of physico-chemical properties of samples to be taken, intake p the tubes placed in a sealed capsule with liquid coolant, equipped with a partitioned cooling jacket [patent SU # 345214, publ. 01.01.1972].

The disadvantage of this device is the inability to collect condensate EXHAUST gas of internal combustion engine for non-stationary sources.

Known methods of sampling high temperature gases closest to the total number of essential features is a method of sampling a high-temperature gases from the flues to measure the concentrations of pollutants in the exhaust emissions at temperatures up to 600°C, which consists in measuring the volume of gas pulled through the sampling probe, with the subsequent reduction of volume sampled to normal conditions ["LIM f 12.1.1-99. Methodical recommendations on sampling in the determination of concentrations of harmful substances (gases and vapors) in the emissions of industrial enterprises" (appr. The state environmental protection Committee of the Russian Federation 24.03.1999) / [Electronic resource] - access Mode: - date of treatment 16.02.2013].

The disadvantages of this method are the inability of its use for sampling exhaust gases of internal combustion engines driving the vehicle. The method does not allow to assess the efficiency of fuel use in different operating modes of the internal combustion engine on the basis of the analysis of correlations between different chemical composition of the EXHAUST gas of internal combustion engines, including vysokoletuchih compound is, for sorption, which require cryogenic temperatures.

The method is implemented similar device, includes: suction unit, the sampling probe, the sinks, the condensate collector means for preventing bounce, a thermometer for measuring temperature and a pressure gauge for measuring pressure in the sample line ["LIM f 12.1.1-99. Methodical recommendations on sampling in the determination of concentrations of harmful substances (gases and vapors) in the emissions of industrial enterprises" (appr. The state environmental protection Committee of the Russian Federation 24.03.1999) / [Electronic resource] - access Mode: - date of treatment 16.02.2013].

The disadvantage of this device is the ability to use only in stationary conditions. When this cooled sampling probe cannot ensure the integrity of the sample components, condensed and stored in the sample only at low temperatures.

The technical result of the invention is to develop a method and device selection of representative samples of high-temperature gases moving (non-stationary) sources of toxic emissions, containing condensable components, requiring for their conservation in the sample before introduction into the measuring device special low-temperature conditions. The method may be applicable for use when sampling the exhaust gases of the engine is she an internal combustion outside the areas of maintenance, i.e. in the field for further evaluation of the technical condition of the vehicle, including the assessment of environmental risk of exposure to complex chemical factors of the composition of the exhaust.

The task is solved in that in the known method of sampling high temperature gases at temperatures up to 600°C, including the measurement of gas volume pulled through the sampling probe through aspiration and collection of condensate with bringing the volume sampled for normal conditions according to the invention for obtaining a representative sample of characterizing the emission source, the flow of high temperature gas cooled to a temperature of condensation of vapors of volatile components with respect to fuel consumption and operating modes of the engine, the suction volume of the sample is carried out by the differential pressure in the condensate collector and the flow of exhaust gases, and the flow of selected high-temperature gas create a "boiling layer" of the initiators the condensation of vapors of the volatile components, the volume sampled is correlated with the consumption of fuel and mode of operation of the engine, and the condensate remains in the collection of condensate in air-tight conditions before phased study the concentration of individual components, as well as the fact that the device for implementing the method consists of the sampling probe, a means of measuring the volume of high-temperature gases, condensate collector, according to the invention the sampling probe is equipped with a temperature measuring selected gases, the condensate collector exhaust gas has an external thermal insulated shell, between the layers where the cryogenic liquid and a means of measuring the temperature of the condensate, while the initiators of the condensation of a spherical shape made of chemically inert material, which are able to absorb water vapor exhaust emissions; and the cover of the condensate collector is thermally isolated from the vacuum thermal insulation shell condensate collector and exhaust pipes entering the sampling probe and output cryogenically treated gases, provided with valves, the nozzle output is equipped with a filter element, while the lid of the collection of condensate has a remote control, interconnected with means for measuring the temperature and gas volume taken for analysis, level of cryogenic fluid and a means for measuring the temperature of the collected condensate.

The design of the condensate collection presented on the drawing.

The inventive method is implemented by the following actions:

1. Before working in the capacity of the cryogenic liquid is poured cryogenic liquid, e.g. the measures liquid air, which cools to low temperatures of the wall of a cylindrical tank condensate collector.

2. For the purpose of registration parameters indirect point sampling with retrograde condensation of most of the ingredients of the composition of the exhaust gases of the vehicle configures the processor to the mode of operation of the engine, record the starting temperature of the walls of the condensate collector and zero count flow rate selected gas.

3. In the exhaust pipe of the vehicle without touching the walls of the exhaust pipe, i.e. coaxially, enter the sampling probe at a distance of 300 mm from the edge of the socket.

4. Posted by counter volume portion of the hot exhaust gases of the internal combustion engine is pumped through the sampling probe pressure of the main flow of the exhaust gases of the engine into the cavity of the collected condensate is cooled to the dew point of most of the ingredients of the composition of the exhaust gas, which is condensed and adsorbed on the walls of the collection of condensate on the surface of the drip pan and mechanical facilities located on the bottom of the condensate collector, and promote condensation of vapours of substances of the EXHAUST gas of internal combustion engines, which accumulate at the bottom of the condensate collector.

5. Sampling cease volitional decision. A Wake-up call for the end of the gas samples to the Academy of Sciences of the Lisa serve as indications of the processor on the temperature of the condensate above minus 120°C, or about a critical decline in capacity cryogenic liquid.

6. The sampling of the stop removing the sample probe from the pipe of a vehicle, which automatically accompanied by closure of the valves of the inlet and outlet holes in the lid of the condensate collector.

7. The collected sample in the condensed state with your device, ensuring its conservation at a given temperature, is sent to the venue of the analyses consistently released when heated samples of gaseous, liquid and solid state (residual) fractions of selected samples.

8. Upon completion of the analytical work, the cavity of the collection of condensate extracted from the cylindrical casing of the device and released from the condensate was subjected to purification by means warming up with hot water and process degreasing liquids, such as acetone [GOST 2768-84 "technical Acetone. Technical conditions"] with subsequent dewatering pumping hot air.

A device that implements the inventive method has a heat resistant metal sampling probe 1, made for example in the form of a cylindrical stainless steel tube, introduced into the pipe 2 tailpipe emissions sources, and the means of measuring the amount of 3 sampled, United with the remote control 4, located on the lid 5 has a cylindrical device 6, is executed in a portable implementation of the AI, hosts the condensate collector 7 in the form of a cylindrical tank of cold-resistant and gas-tight metal in the cavity of which is placed a drip pan 8, for example, mesh type, located across the cavity condensate collector 7 at the bottom of which are freely initiators of the condensing vapor 9 substances in exhaust gases of internal combustion engines, for example, in the form of granules of silica gel IBCS [GOST 3956-76 "Silica gel technical. Technical conditions"], while the walls of the condensate collector 7 in contact with the walls of the vessel 10 containing a cryogenic liquid, such as liquid air, and the vessel wall 10 with a cryogenic liquid are insulated and insulated outer shell 11, and an upper wall of the condensate collector 7 has a removable insulated cover 5, equipped with a thermal junctions 12, made for example of PTFE, in places of contact of the cover 5 with the end edges of the tank with a cryogenic liquid 10, and the passage of the fitting 13 to fill the tank 10 cryogenic liquid, while the upper part of the socket input 14 sampling probe 1 and pipe the output 15 of the treated air from the condensate collector 7 insulated, and the cover 5 on the inner surface has a reflective heat shield 16, the mirror type, made for example of metal is some foil with a reflectivity of not less than 0.9; moreover, the holes in the top 5 for sockets input 14 and the output 15 of the exhaust gases from the condensate collector 7 is equipped with a valve 17, is automatically triggered after removing the sample probe 1; and the control unit 4 located on the outer surface of the cover 5, is correlated with the level sensors 18 cryogenic liquid in the tank cryogenic liquid 10, a sensor for measuring the temperature of the 19th condensate in the condensate collector 7 and the unit of measurement of volume 3 of the exhaust gas, for example, ultrasonic noncontact type selected for analysis, which excludes the possibility of its metrological failure due to the buildup of viscous substances in exhaust gases; the pipe output 15 in the cover 5 of the collection of condensate has a removable, the filter holder 20 krupnoigolchatogo type filter 21 trapping of aerosols, for example, type AFA-CP-8, capable of electrostatic properties hold aerosol "type mist particles of 0.01 to 2.0 μm, and the connection of the input 14 and the pipe output 15 is provided with a detachable transport plugs 22.

The method is as follows. When sampling, we used the suction devices of various types, which is the essential feature of analogues of the proposed technical solution. It turned out that the pressure of the flow of exhaust gases, re Avenue in the sampling probe, in combination with the pressure drop in the cavity of the condensate collector due to the mass of vapor condensation exhaust gas makes use of the suction pump unnecessary. The flow of exhaust gases with a temperature of 300-500°C (actual temperature of the EXHAUST gas of the engine, in the pipe of the vehicle) to obtain a representative sample of characterizing the composition of the exhaust gas when the operation mode of the engine when the fuel consumption and the ratio of air-fuel (a), i.e. regardless of atmospheric pressure and ambient temperature, through the sampling probe 1, is introduced into the pipe 2 of the exhaust pipe enters the cooled cavity condensate collector 7 having many times larger cross-section than the cross section of the sample probe 1, which leads to the loss of flow rate, measured by means for measuring volume 3, part not more than 100 l/min, is in contact with the cooled walls of the condensate collector 7, mesh eliminator 8 and with the introduction of the initiators of the condensing vapor 9 made, for example, from silica gel IBCS with the absorptive capacity of 9-20% to absorb water vapor comprising 4-8% of the composition of exhaust gases of internal combustion engines, with an abrupt cooling and multiple swirl flow, contributing to the formation of a fluidized-bed of spherical initiators of the condensing vapor , that creates conditions for condensation of the constituent elements of the EXHAUST gas of internal combustion engine; a gas flow, the lost kinetic energy again, but now from the bottom up passes through the eliminator 8, is filtered from aerosols in the filter 21 and is removed through pipe output 15 in the cover 5 of the condensate collector.

The frequency of sampling corresponds to 100 l samples; an alarm signal to the end of the sample is the temperature value of the selected condensate approaching minus 120°C, which is the critical temperature of the adsorption of the most volatile components of the composition of the exhaust gases of engines operating on hydrocarbon fuels, with fuel consumption at the time of sampling in this operating mode, the engine is removed from the onboard computer.

After sampling the sampling probe 1 is removed from the socket input 14 of the cover 5 condensate collector 7, which leads to closing of valve 17 in the holes of the cover 5 condensate collector 7, ensuring the stability of the sample in the cavity of the condensate collector 7 together with its insulated outer walls 11. To exclude external contaminants impact sockets 14 and 15 protect transport plugs 22. When this nozzle 23, which provides axial location of the sampling probe 1 in the lumen of the pipe 2 of the vehicle is removed from the socket 2 and mo is ireverse acetone to remove impurities. After sampling the sampling probe 1 is placed in a plastic bag and sent to the laboratory for extraction of deposits.

The sample exhaust gas of the internal combustion engine emission source, selected by the present method and stored at temperatures of up to minus 120°C, with subsequent gradual warming in the laboratory allows the allocation of the sample by means of a phased target retrieve groups of ingredients that require for desorption different temperature regimes of heat, and to measure the concentration of up to 40 kinds of ingredients, gaseous products of incomplete combustion of hydrocarbon fuel, crankcase gases and products of their interaction, as well as solid particles, including soot and mineral metal salts (sulfates, nitrates, phosphates); and the filter 20 is placed in the filter holder 21, the prescribed in the pipe output 15, allows you to catch almost all aerosols in the stream take samples from the EXHAUST gas of internal combustion engine when the speed of sampling is not more than 100 l/min

The analysis of the level of technology has allowed to establish that the applicant is not detected prototype, characterized by signs, identical to all the essential features of the claimed invention, therefore, the proposed solution meets the criterion of "novelty". Comparison of essential priznaki who developed the device with the characteristics of the known solutions, it is believed, that the proposed solution meets the criterion of "inventive step" and "industrial applicability".

1. The method of sampling high temperature gases at temperatures up to 600°C, including the measurement of gas volume pulled through the sampling probe by aspiration, and the collection of condensate with bringing the volume sampled to normal conditions, characterized in that for obtaining a representative sample of characterizing the emission source, the flow of high temperature gas cooled to a temperature of condensation of vapors of volatile components with respect to fuel consumption and operating modes of the engine, the suction volume of the sample is carried out by the differential pressure in the condensate collector and the flow of exhaust gases, and the flow of selected high-temperature gas create a "boiling layer" of the initiators of the condensation of vapors of volatile components, the volume sampled is correlated with the consumption of fuel and mode of operation of the engine, and the condensate remains in the collection of condensate in air-tight conditions before phased study the concentration of individual components.

2. The device for implementing the method according to claim 1, comprising a sampling probe, a means of measuring the volume of high-temperature gases, condensate collector, characterized in that probate the hydrated probe provided with means for measuring the temperature of selected gases, collection of condensate exhaust gas has an external thermal insulated shell, between the layers where the cryogenic fluid, and a means of measuring the temperature of the condensate, while the initiators of the condensation of a spherical shape made of chemically inert material, which are able to absorb water vapor exhaust emissions, and cap condensate collector is thermally isolated from the vacuum thermal insulation shell condensate collector and exhaust pipes entering the sampling probe and output cryogenically treated gases, provided with valves, the nozzle output is equipped with a filter element and cover condensate collector has a remote control, interconnected with means for measuring the temperature and volume of gas taken for analysis, level of cryogenic fluid and a means for measuring the temperature of the collected condensate.



 

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1 dwg

FIELD: investigating or analyzing materials.

SUBSTANCE: device has cylindrical housing, heater, clamp, pump for pumping water to be investigated, and valve for insulation of the sample from ambient water. The device is provided with a unit which has an assembly of cells with microbiological filters connected in parallel. The diameters of the cells are different. The device has additional heater mounted in the top part of the housing and additional valve. The cell assembly is interposed between the valves.

EFFECT: enhanced reliability of sampling.

1 dwg

FIELD: investigating or analyzing materials.

SUBSTANCE: sampling device has sampler, changeable batching member which is made separately from the sampler, housing, and wind-protection device. The wind-protection device is made of porous diaphragm mounted in the base of the housing and overlaps it. The sampler is mounted to provide the distance between the inlet port of the sampler and diaphragm to be 0.1D<L<0.3D, where D is the diameter of diaphragm and L is the distance between the inlet port of the sampler and diaphragm.

EFFECT: improved design.

3 cl, 1 dwg

FIELD: test technology.

SUBSTANCE: sample for testing porous materials by means of shock compression is made in form of a disc with flat parallel bases and cone side surface. Diameters of bases of disc relate as (7-8):1. Thickness of sample equals to (0,15-0,2) diameter of larger base.

EFFECT: reduced number of tests; improved precision.

2 dwg

FIELD: meteorology.

SUBSTANCE: device has sampling cylinder provided with cutting ring with teeth, piston with pusher, cutting members secured to the inner side of the ring, and cover with central threaded opening for the pusher made of a screw. The cover and pusher are provided with handles.

EFFECT: enhanced convenience of sampling snow.

4 cl, 5 dwg

FIELD: analyzing and/or investigating of materials.

SUBSTANCE: method comprises setting the sampling member and means for measuring the flow parameters into the pipeline, pumping a part of the flow through the sampling member, and determining the parameters of the flow.

EFFECT: enhanced reliability of sampling.

1 dwg, 1 tbl

FIELD: investigating or analyzing materials.

SUBSTANCE: method comprises setting the sampling member into the pipeline, separating the branch with inhomogeneous distribution of inclusions upstream of the sampling, directing the branch to the mixer for the intensive homogenizing, combining the flow branches, and sampling the combined flow. The device has sampling member, by-pass pipeline for branching the flow, and mixer. The mixer is mounted on the horizontal section of the pipeline between the inlet of the by-pass pipeline and its outlet for homogenizing the flow branch, which does not flow through the by-pass pipeline.

EFFECT: enhanced reliability of sampling.

2 cl, 4 dwg, 1 tbl

FIELD: oil industry.

SUBSTANCE: device has hollow body which is a fragment of force pipeline at vertically placed portion of mouth armature. Tool for controlling flow of multi-component gas-liquid substance is made in form of valve, connected to rotary support. Sample chamber is a ring-shaped hollow in hollow body, placed at same level with valve and connected at inlet to flow of multi-component gas-liquid substance through extracting channels, made on hollow body. Extracting channels are made in form of side slits, positioned symmetrically relatively to valve rotation axis. Ring-shaped hollow on hollow body is connected at outlet to locking tool, mounted at extension of valve shaft and made in form of sample-taking valve. Valve shaft and sample-taking valve are interconnected through hollow intermediate shaft. Sample-taking valve is placed in the body of locking tool with possible reciprocal movement. Valve shaft and hollow intermediate shaft are interconnected with possible mutual rotation for a quarter of one turn.

EFFECT: simplified construction and maintenance, higher quality.

4 dwg

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