30results about How to "Realize online sampling" patented technology

The invention discloses an experimental device for high temperature and high pressure anti-corrosion reaction, and belongs to the technical field of high temperature and high pressure anti-corrosion reaction. An existing high temperature and high pressure reaction kettle has the defects that a kettle body is heavy, is difficult to detach and is insufficiently sealed, the temperature and the pressure are unlikely to control, and the on-line sampling cannot be realized. The experimental device for the high temperature and high pressure anti-corrosion reaction comprises an air supply system, a piston container, a reaction kettle system and a control system. Various materials can generate chemical reaction in the experiment device in a high temperature and high pressure range of 50MPa pressure and 350 DEG C temperature; components, such as a piston, a cylinder body, an end cap, the reaction kettle body and a sampler, directly in contact with a reaction solution are made from a hastelloy material so as to have the strong corrosion resistance. The experimental device has functions of temperature and pressure presetting, and temperature and pressure overload protection; meanwhile, the experimental device is provided with electromagnetic propelled stirring blades which can be used for stirring reactors during reaction, so that the reaction speed is increased; furthermore, the experimental device is provided with the sampler so as to realize the on-line sampling on the reaction solution.

The invention relates to a method for preparing biological oil through vacuum pyrolysis of biomasses, which comprises the following technological processes: (1) vacuum pyrolysis: adding raw materials after pretreatment into a reaction kettle, and heating a peripheral pipe type furnace to raise the temperature for pyrolysis, wherein a heat conducting device is arranged in the reaction kettle; (2) condensation: introducing volatile components (mainly comprising water vapor) at a low temperature into a drying tower, and guiding the volatile components at a high temperature into a coil condenser for condensation, wherein the online sampling can be achieved in the process of the pyrolysis; and (3) absorption: absorbing the water vapor in incondensable gas by the drying tower and absorbing nitride and sulfide by a bubbling absorption bottle so as to effectively reduce the pollution caused by vacuum pump oil. The method partially solves the problem of temperature rise hysteresis caused by the low heat transfer efficiency of the biomasses in the process of the temperature rise and the problem of low condensation efficiency and the online sampling, and simultaneously the method preliminarily reduces the water content in the biological oil.

The invention discloses a dual-mode air peculiar smell monitoring and early warning system based on characteristic pollutants and an electron nose. The air monitoring and early warning device comprises a polluting substance concentration monitoring module and a peculiar smell monitoring module, wherein the polluting substance concentration monitoring module is arranged for monitoring the polluting substance concentration in the air; and the peculiar smell monitoring module is used for monitoring the peculiar smell in the air. According to the air monitoring and early warning device of the invention, the main polluting substance concentration can be measured continuously, the air peculiar smell sensing degree can be monitored quantitatively, the air peculiar smell monitoring management technical defects in the prior art are overcome, real-time, online and remote air sampling, monitoring and early warning can be carried out on the air environment, and the system of the invention can be applied to real-time remote monitoring, emergent early warning and coordinated control of an odor pollution source region, a frontier district and a surrounding sensitizing range.

The invention relates to an oil-gas phase state multilayer sampling method and device, wherein the device comprises a PVT (pressure volume temperature) cylinder for storing oil-gas test samples, a sapphire glass which seals one end of the PVT (pressure volume temperature) cylinder, a plug arranged in the PVT (pressure volume temperature) cylinder and capable of moving under the control of a step motor in order to keep the pressure in the PVT (pressure volume temperature) cylinder, an upper feeding opening arranged on the upper side wall of the PVT (pressure volume temperature) cylinder for injecting stratum oil samples, a lower feeding opening arranged on the lower side wall of the PVT (pressure volume temperature) cylinder for injecting gas samples, and a plurality of sampling pipes respectively connected on different height positions of the side wall of the PVT (pressure volume temperature) cylinder for sampling the components of each layer. The real-time analysis and the on-line sampling of the components in the oil-gas phase mixing process are realized, and the process from the contact of the oil gas gradually to the mixed phase is indicated truly. With the adoption of the method and the device, in macro, different phase mixed zones are viewed directly, and in micro, the component change of different phase mixed zones are tested.

The invention relates to a surface desorption sampling method and a surface desorption sampling device by using plasma produced by dielectric barrier discharge. The device comprises an alternating-current high-voltage power supply, a high-voltage electrode, a ground electrode, an insulating medium, a discharge gas inlet and outlet, a cavity and the like. Certain alternating voltage is applied between the high-voltage electrode and the ground electrode, discharge gas is broken down to produce a large number of high-energy high-concentration electrons, ions and other species, the high-energy species pass through small holes on the ground electrode under the accelerating action of an electric field and bombard the surface of an object, and sample molecules to be detected such as explosive substances, poisonous substances and the like adsorbed on the surface of the object are desorbed from the surface of the object and enter analytical instruments of a mass spectrum, a mobility spectrum and the like through a gas carrier tape so as to be detected. By the method, in-situ on-line sampling can be realized, sampling efficiency is improved, and sampling time is shortened.

The invention provides a slurry density measuring device. The slurry density measuring device comprises a cleaning brush, a controller and a cylindrical metering tank, wherein the cleaning brush is arranged on a side wall of a desulphurization reaction tower; the cleaning brush is arranged over the metering tank and is connected with a lifting cross plate which can lift along the side wall of thedesulphurization reaction tower; the cleaning brush is suspended below the lifting cross plate; an overflowing opening is formed in a side wall of the upper portion of the metering tank; the overflowing opening is integrally connected with an overflowing tube which extends vertically downwards; a liquid draining opening is formed in the bottom of the metering tank; the liquid draining opening is integrally connected with a liquid draining tube; the liquid draining tube communicates with an overflowing tube; and a liquid feeding solenoid valve and a liquid draining solenoid valve are separatelyarranged on a liquid feeding tube and the liquid draining tube. The slurry density measuring device has the beneficial effects that online sampling of slurry liquid can be realized, slurry density can be measured and calculated automatically, the metering tank can further be automatically cleaned, the degree of automation is high, and the measuring precision is high.

The invention discloses a nuclear power plant radioactive fluid waste online sampling device which comprises a sampling part sealedly connected to a fluid pipeline, a movable rod sealedly accommodated in an accommodating space, and a driving device sealedly mounted on the sampling part; the sampling part is provided with the accommodating space and a sample discharge port communicating with the accommodating space; the movable rod is provided with a concave sampling space and can perform reciprocating motion between a sample discharge position and a sampling position; the driving device drives the movable rod to perform reciprocating motion between the sample discharge position and the sampling position in the accommodating space; when the movable rod is located at the sampling position, the movable rod enters the fluid pipeline, and a fluid sample enters the concave sampling space; when the movable rod is located at the sample discharge position, the concave sampling space corresponds to the sample discharge port, and the fluid sample carried in the concave sampling space flows into a shield sampling bottle sealed connected on the sample discharge port from the sample discharge port. In addition, the invention also discloses a nuclear power plant radioactive fluid waste online sampling method.

The invention relates to a material filling device. The material filling device comprises a to-be-filled container, a material conveying pipeline system, a vacuum pipeline system, a tail gas pipelinesystem and a nitrogen pipeline system. A material source and the container are connected through the material conveying pipeline system. The tail gas pipeline system, the vacuum pipeline system and the nitrogen pipeline system communicates with the material conveying pipeline system and the container. The material conveying pipeline system comprises a material conveying pipeline and a first valvearranged on the material conveying pipeline. The material inlet end of the material conveying pipeline is connected to the material source. The material outlet end of the material conveying pipeline is connected to a material inlet of the container. A control device is connected with the first valve and controls opening and closing of the first valve. By adoption of the material filling device, material filling work can be conducted in an ordinary environment, a safe gas atmosphere is provided for material filling, and safe material filling is achieved; and limitations from auxiliary devices such as a glove box are avoided, and operation is convenient, fast and safe.

The invention discloses an exhaled air sampling device and sampling method for direct mass spectrometry detection. The method integrates a semiconductor cooling device and a mass spectrometer to achieve the direct mass spectrometry detection of components of exhaled end air and regulation of exhaled air humidity. The device includes a sealed buffer sample cell, two semiconductor cooling plates, two sets of air-cooled heat sinks, and a temperature controller. Four openings are arranged on the buffer sample cell, and the four openings are an exhaled air inlet, an exhaled air outlet, a mass spectrometer injection port, and a temperature measuring element inlet. When in sampling, the temperature controller is turned on, and cooling temperature is set. A tester breathes slowly and deeply through a sterile blowing mouth. After exhalation is completed, mass spectrometry instrument acquisition software is started to begin sampling. Through use of the exhaled air sampling device, the exhaled air humidity can be adjusted, the exhaled end air at different humidity can be obtained, and the exhaled air sampling device is favorable for researching the influence of the humidity on the analysis ofthe exhaled air.

The invention relates to the field of metallurgy, in particular to sampling of metallurgical raw materials. An on-line sampling system for metallurgical raw materials comprises an ore sampling unit and an ore modulation unit, a coal sampling unit and a coal modulation unit; the coal modulation unit comprises a plurality of splitting machines; the ore sampling unit and the coal sampling unit comprise first, second and third sampling units, wherein the number of the ore sampling unit is 1 to 3, while the raw coal sampling unit is 0 to 2; and the conveying sampling system also comprises an intercommunication unit, each sampling unit is in conveying connection with the intercommunication unit, and the intercommunication unit comprises a plurality of conveyer belts and a plurality of swing chutes for distributing and conveying the raw materials conveyed by different sampling units to the corresponding ore modulation unit or the raw coal modulation unit. The on-line sampling system which is reformed based on the prior ore conveying and sampling systems can screen the coal on line at the same time of finishing conveying and sampling the ore, does not need large amount of manpower, greatly improves the screening efficiency, and reduces the labor intensity.

The invention provides an alkali metal sampling device. The device comprises an alkali metal sampling assembly, an operation box and an atmosphere adjusting assembly; the alkali metal sampling assembly is in fluid communication with an alkali metal loop, and is used for extracting alkali metal from the alkali metal loop; the operation box matches the alkali metal sampling assembly in a sealed modeand used for operating the alkali metal sampling assembly; and the atmosphere adjusting assembly is in fluid communication with an inner cavity of the alkali metal sampling assembly and used for providing a needed internal atmosphere environment for the alkali metal sampling assembly. The alkali metal sampling assembly is directly connected with the alkali metal loop, therefore, on-line samplingof the alkali metal loop is realized; the contact with air in the sampling process is avoided; an appropriate environment is provided for alkali metal sampling through the operation box matching the alkali metal sampling assembly in a sealed mode and the atmosphere adjusting assembly, so that contact between an alkali metal sample and air is avoided in the whole process; the original property of alkali metal is guaranteed as much as possible; and guarantee is provided for accuracy of follow-up tests.

The invention discloses a fully sealed powder sampler and a sampling method thereof. The sampler comprises a swing cylinder, a sampling bucket fixed on the swing cylinder and a sampler arranged in thesampling bucket and connected with the swing cylinder, wherein the sampler comprises a sampling groove and a connecting block arranged on one side of the sampling groove, and the connecting block isfixedly connected with a swing rod on the swing cylinder; the sampling bucket comprises a horizontal accommodating channel and a vertical conveying channel arranged at the bottom of the horizontal accommodating channel, and the horizontal accommodating channel is communicated with the vertical conveying channel. The sampler has the beneficial effects of simple structure and reasonable design, thecylinder is pushed by air pressure to move to complete sampling of the sampler on the basis of the working principle of the swing cylinder, and spill of samples due to manual direct sampling is avoided.

The invention relates to cell culture bag and aims to provide a cell culture bag with a three-dimensional structure, a higher space utilization rate is realized in a closed space, on-line detection sensors for the on-line cell state and cytology index can be mounted by using integrated sensor connectors, and on-line cell sampling is completed by the aid of a sampling bag. The cell culture bag comprises a reagent connector, a bag body, sensor connectors and a sampling bag, wherein the sampling bag is in a three-dimensional structure, and a plurality of sensors can be mounted; the reagent connector is mounted at the top of the bag body; the sensor connectors are mounted on one side of the bottom of the bag body, and the sampling bag is mounted on the other side of the bottom of the bag body. With the adoption of the technical scheme, the cell culture bag with the three-dimensional structure has the distinctive technical characteristics that 1, the sampling bag is in the three-dimensional structure so that the closed culture space can be effectively used; 2, the cell culture bag is equipped with the sampling bag so that on-line sampling can be realized.

The invention provides a germ integrity online detection system for milled rice with embryo, which comprises a transportation executing mechanism for milled rices with embryos, a processing controller for milled rices with embryos, an image acquisition device and an industrial control computer, and the industrial control computer sends an instruction to the processing controller of the milled rices with embryos in a data communication mode. The processing controller for milled rices with embryos controls the transportation executing mechanism for the milled rices with embryos to convey germ rice grains to an objective table, an industrial camera of the image acquisition device collects images, then the images are transmitted to the industrial control computer to be processed, and an instruction is sent again to the processing controller for milled rices with embryos to control the executing mechanism to recycle the rice grains. And germ rice integrity detection software is arranged in the industrial control computer. According to the system, the germ rice detection sample can be automatically updated under the condition of no human intervention, circulating germ rice image acquisition is completed, and detection is realized.

The invention belongs to the field of biomass energy utilization, and discloses an electrochemical hydrogenation upgrading device for bio-oil, which comprises: an electrolysis unit, a circulation unitand a heating unit; the electrolysis unit comprises an anode chamber (1) and a cathode chamber (6) which are separated through a proton exchange membrane (3), wherein the cathode chamber (6) is usedfor accommodating bio-oil and can perform electrochemical hydrogenation treatment, thus achieving quality improvement of the bio-oil. an electrolyte inlet (9) and an electrolyte outlet (10) of the anode chamber (1) are connected through a circulating unit, and the cathode chamber (6) is also similar; and the heating unit is used for heating the bio-oil in the cathode chamber (6), so that the bio-oil can be subjected to electrochemical hydrotreatment under a preset temperature condition. By improving the structure of each component of the device, the arrangement mode of the components and the like, compared with the prior art, the electrochemical hydrogenation upgrading of the bio-oil at a constant temperature can be realized.

The invention relates to an anti-blocking online sampling device for a mother liquor trioxane reaction kettle, belongs to the technical field of chemical synthesis. The invention comprises a samplingdevice outlet pipe, a hot water inlet flange, a hot nitrogen gas inlet flange, a sampling outlet flange, a sampling push rod and a flushing outlet flange. Therefore, the online sampling of the reaction mother liquor is achieved. Moreover, after sampling, the sampling device can be cleaned and dried in time without destroying the sealed state of the reaction mother liquid, thereby preventing the sampling device from being clogged. It is not necessary to pass the hot water at all times to prevent residual reaction mother liquor from forming plastic-like paraformaldehyde to block ball valves andpipes, which effectively avoids waste of hot water.

The invention relates to the field of metallurgy, in particular to sampling of metallurgical raw materials. An on-line sampling system for metallurgical raw materials comprises an ore sampling unit and an ore modulation unit, a coal sampling unit and a coal modulation unit; the coal modulation unit comprises a plurality of splitting machines; the ore sampling unit and the coal sampling unit comprise first, second and third sampling units, wherein the number of the ore sampling unit is 1 to 3, while the raw coal sampling unit is 0 to 2; and the conveying sampling system also comprises an intercommunication unit, each sampling unit is in conveying connection with the intercommunication unit, and the intercommunication unit comprises a plurality of conveyer belts and a plurality of swing chutes for distributing and conveying the raw materials conveyed by different sampling units to the corresponding ore modulation unit or the raw coal modulation unit. The on-line sampling system which isreformed based on the prior ore conveying and sampling systems can screen the coal on line at the same time of finishing conveying and sampling the ore, does not need large amount of manpower, greatly improves the screening efficiency, and reduces the labor intensity.

The invention relates to an oil-gas phase state multilayer sampling method and device, wherein the device comprises a PVT (pressure volume temperature) cylinder for storing oil-gas test samples, a sapphire glass which seals one end of the PVT (pressure volume temperature) cylinder, a plug arranged in the PVT (pressure volume temperature) cylinder and capable of moving under the control of a step motor in order to keep the pressure in the PVT (pressure volume temperature) cylinder, an upper feeding opening arranged on the upper side wall of the PVT (pressure volume temperature) cylinder for injecting stratum oil samples, a lower feeding opening arranged on the lower side wall of the PVT (pressure volume temperature) cylinder for injecting gas samples, and a plurality of sampling pipes respectively connected on different height positions of the side wall of the PVT (pressure volume temperature) cylinder for sampling the components of each layer. The real-time analysis and the on-line sampling of the components in the oil-gas phase mixing process are realized, and the process from the contact of the oil gas gradually to the mixed phase is indicated truly. With the adoption of the method and the device, in macro, different phase mixed zones are viewed directly, and in micro, the component change of different phase mixed zones are tested.

The invention provides an on-line continuous monitoring system and method for aldehyde ketone compounds in gas. The on-line continuous monitoring system comprises a detection unit, the bearing piece is arranged on the base and is driven by the driving module to rotate; m groups of working units are included, M is an integer not less than 1, each group of working units comprises P working units, and P is an integer not less than 3; the working unit is arranged on the bearing piece; during rotation of the bearing part, each working unit is sequentially located at a preparation working position, a sampling working position and a detection working position; the preparation flow path is arranged at a preparation working position, the sampling flow path is arranged at a sampling working position, and the detection flow path is arranged at a detection working position; the control device is used for controlling whether the working unit in the preparation working position enters the preparation flow path or not, whether the working unit in the sampling working position enters the sampling flow path or not and whether the working unit in the detection working position enters the detection flow path or not. The method has the advantages of high working efficiency, accurate analysis result and the like.

The invention relates to a method for preparing biological oil through vacuum pyrolysis of biomasses, which comprises the following technological processes: (1) vacuum pyrolysis: adding raw materials after pretreatment into a reaction kettle, and heating a peripheral pipe type furnace to raise the temperature for pyrolysis, wherein a heat conducting device is arranged in the reaction kettle; (2) condensation: introducing volatile components (mainly comprising water vapor) at a low temperature into a drying tower, and guiding the volatile components at a high temperature into a coil condenser for condensation, wherein the online sampling can be achieved in the process of the pyrolysis; and (3) absorption: absorbing the water vapor in incondensable gas by the drying tower and absorbing nitride and sulfide by a bubbling absorption bottle so as to effectively reduce the pollution caused by vacuum pump oil. The method partially solves the problem of temperature rise hysteresis caused by the low heat transfer efficiency of the biomasses in the process of the temperature rise and the problem of low condensation efficiency and the online sampling, and simultaneously the method preliminarily reduces the water content in the biological oil.

The invention relates to cell culture bag and aims to provide a cell culture bag with a three-dimensional structure, a higher space utilization rate is realized in a closed space, on-line detection sensors for the on-line cell state and cytology index can be mounted by using integrated sensor connectors, and on-line cell sampling is completed by the aid of a sampling bag. The cell culture bag comprises a reagent connector, a bag body, sensor connectors and a sampling bag, wherein the sampling bag is in a three-dimensional structure, and a plurality of sensors can be mounted; the reagent connector is mounted at the top of the bag body; the sensor connectors are mounted on one side of the bottom of the bag body, and the sampling bag is mounted on the other side of the bottom of the bag body. With the adoption of the technical scheme, the cell culture bag with the three-dimensional structure has the distinctive technical characteristics that 1, the sampling bag is in the three-dimensional structure so that the closed culture space can be effectively used; 2, the cell culture bag is equipped with the sampling bag so that on-line sampling can be realized.

The invention discloses an online sampling device for low-temperature crystallized products. The device comprises a fixed assembly and a detachable assembly. The fixing assembly is composed of a full-bore ball valve, a short section and a quick-opening sub-connector, the fixing assembly is fixed to a to-be-sampled pipeline through the short section in a welding mode, and the other end of the short section is sequentially connected with the full-bore ball valve, the short section and the quick-opening sub-connector in a welded mode; the detachable assembly is composed of a sealing gasket, a quick-opening female joint, a sleeve, a soft sealing filler, a soft sealing gland, a short section, a sampling pipe and a sampling rod, the quick-opening female joint in the detachable assembly is detachably fixed with one end of the sleeve through a pipe thread, the other end of the sleeve is provided with a stepped reducing part, and the soft sealing filler is arranged at the stepped reducing part; and the axial displacement of the soft sealing filler is limited through the soft sealing gland, and the soft sealing gland is fixed with the sleeve through a bolt. The device realizes on-line sampling of low-temperature solid crystallization products and solid-liquid mixtures, and solves the problem of low repeated utilization rate of existing sampling.

The invention discloses a method for preparing gas-liquid fuels by scrap tire vacuum pyrolysis, and the method is to carry out vacuum pyrolysis on an integral device by a fixed bed containing high efficient desulfuration and to carry out vacuum pyrolysis on a scrap tire under the condition of load-type solid base catalyst to prepare the gas-liquid fuels. By using the method of the invention, sulphur in the volatile matter can be effectively removed, the obtained gas-liquid products can be directly taken as fuel for using, and the load-type solid catalyst not only can increase heat transfer efficiency of the scrap tires, but also can improve the content of high value-added products in fluid oil phase. The method is economical and feasible, has no discharging of the three wastes, and realizes zero pollution on the environment, and meanwhile, wastes are changed into wealth, which conforms to sustainable developmental tendency of the future resources.

The invention belongs to the field of biomass energy utilization, and discloses a bio-oil electrochemical hydrogenation upgrading device, which includes an electrolysis unit, a circulation unit and a heating unit, wherein the electrolysis unit includes an anode chamber separated by a proton exchange membrane (3) (1) and the cathode chamber (6), the cathode chamber (6) is used to accommodate bio-oil, can carry out electrochemical hydrogenation treatment, and realizes the upgrading of bio-oil; the electrolyte inlet (9) of the anode chamber (1) and The electrolyte outlets (10) are connected by a circulation unit, and the cathode chamber (6) is also similar; the heating unit is used to heat the bio-oil in the cathode chamber (6), so that these bio-oils can be heated at a preset temperature condition. Under electrochemical hydrogenation treatment. Compared with the prior art, the present invention can realize electrochemical hydrogenation and upgrading of bio-oil at a constant temperature by improving the structure of each component of the device and their arrangement.

The invention discloses an experimental device for high temperature and high pressure anti-corrosion reaction, and belongs to the technical field of high temperature and high pressure anti-corrosion reaction. An existing high temperature and high pressure reaction kettle has the defects that a kettle body is heavy, is difficult to detach and is insufficiently sealed, the temperature and the pressure are unlikely to control, and the on-line sampling cannot be realized. The experimental device for the high temperature and high pressure anti-corrosion reaction comprises an air supply system, a piston container, a reaction kettle system and a control system. Various materials can generate chemical reaction in the experiment device in a high temperature and high pressure range of 50MPa pressure and 350 DEG C temperature; components, such as a piston, a cylinder body, an end cap, the reaction kettle body and a sampler, directly in contact with a reaction solution are made from a hastelloy material so as to have the strong corrosion resistance. The experimental device has functions of temperature and pressure presetting, and temperature and pressure overload protection; meanwhile, the experimental device is provided with electromagnetic propelled stirring blades which can be used for stirring reactors during reaction, so that the reaction speed is increased; furthermore, the experimental device is provided with the sampler so as to realize the on-line sampling on the reaction solution.

The invention provides a visual material tracking method and system for on-line identification of flaw detection plates and representative plates. The method comprises the steps of pre-selecting steel billets of the representative plates and steel billets of the flaw detection plates for classification, then classifying the representative plates and the flaw detection plates through jet printing of plate numbers containing different tail end characters, and finally, realizing on-line type identification, on-line sampling and on-line flaw detection of the steel plates through a main display screen in an operation room and a display screen on a flaw detection station. Therefore, the steel plate type can be identified on line at the first time without looking over an MES system or a rolling plan list. Meanwhile, the phenomena of missing detection and missing sampling can be obviously reduced, the situation that flaw detection or sampling of a turning plate is conducted again is reduced, and the generation of non-plans is also reduced.

The invention belongs to the technical field of coke testing, and further relates to a coke online drying and mechanical strength measuring system. The method comprises the following steps: 1, sampling; 2, screening before drum screening; 3, performing coke drying; 4, matching coke with a drum; 5, measuring the mechanical strength of coke; 6, discarding the materials; and 6, repeating the steps 1-5 until the work is finished. The continuous operation of online sampling, size fraction screening, drying, size fraction weighing, mechanical strength measuring and material discarding of wet quenched coke is achieved, the sample representativeness and the operation efficiency are greatly improved, and unmanned operation on site can be achieved through remote operation control.

The invention relates to the technical field of cyclone application, in particular to a multi-parallel cyclone unit with an online sampling device and an online sampling method. The multi-parallel cyclone unit comprises a support, a distribution cylinder is arranged in the middle of the support, a feeding port is formed in the lower end of the distribution cylinder, multiple parallel cyclones arearranged on the distribution cylinder, feeding pipes of the cyclones communicate with the side wall of the distribution cylinder through distribution branch pipes, and distribution sampling valves arearranged on the distribution branch pipes. The multi-parallel cyclone unit is characterized in that each distribution sampling valve is composed of a valve body, a sealing ring, a gate plate, supporting rods, an air cylinder, a piston, a solenoid valve and an air source, wherein the solenoid valve is arranged to be a three-position five-way solenoid valve, an A position sensor, a B position sensor and a D position sensor are sequentially arranged on the outer wall of the air cylinder from top to bottom, and the inflation and deflation volume of the solenoid valve is controlled through a controller to adjust the opening amplitude and position of the gate plate in the valve. The multi-parallel cyclone unit has the advantages of being simple in structure, capable of achieving convenient online sampling, good in sampling effect, high in sampling efficiency and the like.

The invention provides an alkali metal sampling device, which includes an alkali metal sampling assembly, an operation box and an atmosphere adjustment assembly, wherein the alkali metal sampling assembly is in fluid communication with the alkali metal circuit, and is used to extract alkali metal from the alkali metal circuit, and the operation box Sealingly matched with the alkali metal sampling component, used to operate the alkali metal sampling component, the atmosphere adjustment component is in fluid communication with the inner cavity of the alkali metal sampling component, and used to provide the required internal atmosphere environment for the alkali metal sampling component. The alkali metal sampling component is directly connected to the alkali metal circuit, thereby realizing the online sampling of the alkali metal circuit, avoiding the contact with the air during the sampling process, and the operation box and the atmosphere adjustment component that are tightly matched with the alkali metal sampling component are for Sampling of alkali metals provides an appropriate environment, thereby avoiding the contact of alkali metal samples with air during the whole process, ensuring the original properties of alkali metals as much as possible, and providing a guarantee for the accuracy of subsequent experiments or tests.