448 results about "Sampling valve" patented technology

The invention relates to the technical field of sampling devices, in particular to a quantitative sampling valve of a liquid circulation pipeline, which comprises a ball valve, a sampling barrel and a sampling assembly. The sampling barrel is connected with a pipeline through a ball valve. When the ball valve is opened, a sampling channel is formed between the ball valve and the sampling barrel. The sampling assembly and the sampling channel are slidably sealed. The sampling assembly divides the sampling channel into an upper channel and a lower channel. According to the quantitative sampling valve of the liquid circulation pipeline, the ball valve, the sampling barrel and the sampling assembly are arranged to be matched, gas and residual liquid in the upper channel can be discharged back to the pipeline, the situation that a new liquid sample is polluted by previous liquid sample residues is avoided, and the sampling accuracy and representativeness are improved. And after the sampling is completed, the liquid sample is temporarily sealed in the sampling barrel by utilizing the sealing between the sampling assembly and the sampling barrel, so that the liquid sample is prevented from being polluted due to contact with the outside, and the liquid sample is convenient to transfer and store.

The invention discloses a power plant water vapor centralized sampling device and method. The power plant water vapor centralized sampling device comprises a high-temperature and high-pressure sampling valve, a filter, a cooler, a cooler water inlet regulating valve, a cooler water return valve, a pressure reducing valve, a safety valve, an electromagnetic valve and a temperature controller. By means of the arrangement, in actual operation, the problems that a filter of a water vapor centralized sampling device is frequently blocked and cannot be thoroughly washed, and steam is easily discharged during sampling pollution discharge can be solved through the water vapor centralized sampling device. The opening degree of the cooling water inlet regulating valve of the cooler can be automatically regulated according to the temperature of the cooled sample water, so that the flow of the cooling water is reduced, the cooling water is saved, and the water vapor centralized sampling device is more economical and safer to use. Not only is the workload of workers reduced, but also the workers do not need to worry about steam discharge and scald accidents during pollution discharge. Compared with a traditional steam-water centralized sampling system, the safety and the convenience are greatly improved.

The invention discloses an in-situ detection device and system for dissolved gas in insulating oil. The device comprises an oil chamber, a pipe body and an oil-gas separation structure. An oil inlet is formed in the wall face of the oil chamber, and two oppositely-arranged lenses are further arranged on the wall face of the oil chamber. The pipe body is arranged in the oil chamber, two ends of the pipe body are respectively hermetically connected to the two lenses, and holes are formed in the side part of the pipe body. And the oil-gas separation structure is used for separating dissolved gas from the insulating oil and enabling the dissolved gas to enter the pipe body from the holes. After the oil inlet of the oil chamber is communicated with the oil sampling valve of the to-be-detected oil-immersed power equipment, insulating oil enters the oil chamber, and dissolved gas in the insulating oil is separated by the oil-gas separation structure and enters the pipe body from the hole, so that the dissolved gas interacts with laser emitted into the pipe body from a lens, and the laser is emitted into the pipe body from the lens. A Raman scattering signal capable of reflecting the concentration of each component of the gas is generated and is transmitted to the other lens through the tube body to be ejected out for detection, so that the in-situ high-sensitivity detection of the dissolved gas in the insulating oil is realized.

The invention belongs to the technical field of ocean sampling, and provides a pneumatic throwing type multi-channel self-sinking and floating trace seawater sampling device and a pneumatic throwing type multi-channel self-sinking and floating trace seawater sampling method. The device comprises a portable gas cylinder, a casting track, a self-sinking and floating type trace seawater sampler shell, a fixing frame, a pressure sensor, a control bin and the like, and after a seawater sample is collected, a fixing agent can be injected into the seawater sample to fix microorganisms in the seawater sample and the like. And the self-sinking and floating trace seawater sampler is far away from the trace element precipitation influence area of the scientific investigation ship in a pneumatic throwing manner. Meanwhile, the seawater sampling valve with the engineering plastic valve core and the flow channel is innovatively designed, and the seawater sample bin and the fixing agent bin on the inner surface are coated with engineering plastic, so that the interference caused by trace element precipitation of a metal structure of the sampler in the prior art is avoided.

The invention discloses a grain depot intelligent sampling quality inspection system and method, and relates to the technical field of intelligent grain depot detection, and the method comprises the steps: collecting environment data, three-dimensional point cloud data and surface acoustic wave group velocity data, and carrying out the inversion calculation through a Love wave equation, and obtaining a three-dimensional density distribution diagram; calculating the density gradient in the vertical direction according to the three-dimensional density distribution diagram to obtain a stratified sampling parameter table; according to the stratified sampling parameter table, stratified puncturing is conducted on the grain pile, actual sampling depth data are generated, and a three-way sample valve is used for conducting sample distribution detection on the actual sampling depth data. Through layered detection of the three-way sample valve and near-infrared X-ray combined analysis, accurate detection of moisture, protein and heavy metal content is realized, and a detection result is matched with a density distribution diagram through a constrained Kriging interpolation method to generate a quality safety index.

The utility model relates to the technical field of chemical production, in particular to a novel high-viscosity product sampling device. Comprising a cooler, a circulating water inlet pipeline and a BYD liquid inlet pipeline are arranged on the upper portion of one end of the cooler, a circulating water outlet pipeline and a BYD liquid outlet pipeline are arranged on the lower portion of the other end of the cooler, the BYD liquid inlet pipeline and the BYD liquid outlet pipeline are connected through a circulating pipeline, a sampling pipeline is arranged on the circulating pipeline, and a sampling valve is arranged on the sampling pipeline; according to the BYD sampling device, BYD in a high-temperature state is shunted through the circulating pipeline, so that the circulating pipeline is kept in a heating state, the sampling pipeline is always in a heat preservation state by utilizing heat conduction, the problem of troublesome sampling caused by pipeline blockage during sampling in the prior art can be effectively solved, meanwhile, analysts do not need to replace a sampling barrel in a large amount, and the sampling efficiency is improved. The sampling time is shortened, and the material cost and the labor cost are saved.

This invention relates to a sampling device and method for sulfur hexafluoride (SF6) and its mixed gases used in electrical equipment. The sampling device includes an equipment connection module, a sampling module, a gas filling module, and a vacuuming module. The equipment connection module, used to connect the electrical equipment and the gas sampler, consists of an equipment connection valve, a diaphragm pump, and corresponding pipelines. The sampling module, used for gas buffering, consists of a sampling cylinder, a pressure detection unit, a sampling valve, a gas filling valve, a tail gas valve, and corresponding pipelines. The gas filling module, used to fill the sampling container, consists of a booster pump, a sampling container connection valve, and corresponding pipelines. The vacuuming module, used for vacuuming and tail gas collection, consists of a vacuum pump, a tail gas collection device, and its connection valves. The sampling method utilizes appropriate flushing and vacuuming methods when the gas pressure is higher or lower than 0.2 MPa. This sampling device and method can improve the accuracy of sampling sulfur hexafluoride gas or sulfur hexafluoride mixed insulating gases.

The invention belongs to the technical field of refrigerants, and particularly relates to a visual measuring device and method for refrigerant liquid drops, and the device comprises a liquid drop sampling system, and a sampling cabin is connected with a capillary needle tube through a sampling valve, and the capillary needle tube is arranged along the gravity direction; a capillary needle tube of the high-pressure visualization system extends into an observation bin communicated with the sample injection bin; the visible windows are arranged on the opposite side walls of the observation bin, the observation platform is fixed in the observation bin and located between the visible windows and below the capillary needle tube, and the thermoelectric effect semiconductor is arranged on the observation platform; the pressure control system, the electric heating module and the semiconductor chilling plate are arranged on the sample injection bin, and the pressure micro-control unit is electrically connected with the two; the optical imaging system, the high-speed camera and the light source are arranged outside the visible window, and the computer is electrically connected with the two. Compared with the prior art, the problems that in the prior art, high-pressure sampling equipment which is high in cost and complex in operation is needed, and only the liquid drop contact angle can be measured are solved. According to the scheme, through the gravity action of the liquid working medium, sample injection in a high-pressure environment is achieved, and high-pressure sample injection equipment is not needed.

A valve assembly and chuck system for a gas sampling apparatus. In one embodiment, the apparatus may comprise a valve assembly comprising a first core valve, wherein a pin of the first core valve is biased to a first closed position; a chuck system comprising a second core valve, wherein a pin of the second core valve is biased to a first closed position; and a transfer tube housed within the chuck system, wherein the transfer tube provides a means of displacing the pins of the first and second core valves to a second open position; wherein the transfer tube isolates a fluid communication path between the first and second core valves. In an alternate embodiment, the chuck system may not comprise a second core valve, and the transfer tube may isolate a fluid communication path between the first core valve and the chuck system.

A closed-loop sampling system for drug dissolution by flow-through cell method and its use method, comprising a constant-temperature water bath system, a flow-through cell system, a lifting mechanism, a circulating heating system, a solvent monitoring system, a solvent circulation system and a sampling system; the constant-temperature water bath system includes a constant-temperature water bath frame, a constant-temperature water bath, a solvent cup holder, a solvent cup and a solvent cup cover; the flow-through cell system is arranged at the top of the constant-temperature water bath system; the lifting mechanism is arranged on one side of the constant-temperature water bath frame; the circulating heating system includes a heating device and a water circulation pump; the circulating inlet end of the solvent monitoring system is communicated with the heating device, and the circulating outlet end of the solvent monitoring system is respectively communicated with the solvent cup and the flow-through cell; the solvent circulation system includes a solvent circulation pump and a pulse valve; the sampling system includes a sampling mechanism, a sampling pipeline, a sampling valve and a sampling pump. The device of the present invention has a compact structure, high heating efficiency of the heating device, uniform water temperature distribution in the water bath, accurate water temperature control, and temperature and pressure monitoring of the solvent.

A chlorination tower packing cleaning device comprises a chlorination tower body and related accessories, and also comprises a circulating washing pump. A hydrochloric acid outlet is arranged below a corresponding grid plate at the lower position of the chlorination tower, the hydrochloric acid outlet is connected to the circulating washing pump inlet end through a hydrochloric acid drain pipe, a hydrochloric acid drain valve is arranged on the hydrochloric acid drain pipe, a circulating washing pipe is connected to the outlet end of the circulating washing pump, a steam jacket is arranged on the circulating washing pipe, a one-way valve, a hydrochloric acid outlet valve, a hydrochloric acid outlet pressure gauge and a sampling valve branch are arranged near the circulating washing pump on the circulating washing pipe, and one end of the circulating washing pipe far from the circulating washing pump in the length direction is connected to the chlorination tower from the top of the chlorination tower through a reflux valve. Through the device, the chlorination tower packing is cleaned more thoroughly, and the packing does not need to be disassembled from the chlorination tower, and the internal circulation of the device itself can be realized, so as to meet the production requirements of the workshop. In addition, the cleaning effect is good, and the cleaning is safe and stable.

The invention provides a dust collecting bag breaking detection device and a control method, and relates to the field of environmental protection technical equipment, and the dust collecting bag breaking detection device comprises a dust concentration detection system, a bin sampling system, a remote control valve and a leak detection controller. A sampling branch pipe is mounted in a gas purification chamber of each dust removal chamber, and the front end of the branch pipe is connected with a semicircular pipeline and is provided with a plurality of groups of capillary pipes to cover a complete path of filtered gas entering the offline valve; a centralized dust concentration sensor is matched with a valve switching system, each bin is detected in sequence in a polling detection mode, a high-precision sensor does not need to be independently installed in each bin, and the hardware cost is greatly reduced. The leak detection controller controls the sampling fan to generate negative pressure, the sampling valves of all the bins are opened in sequence, and the dust concentration is monitored in real time and compared with a preset threshold value. According to the invention, only one sensor is needed to cooperate with valve switching, and compared with a traditional scheme that each chamber is independently provided with a sensor, the hardware cost is reduced, detection of all chambers can be completed within 15 minutes, and the detection efficiency is improved.

The present invention belongs to the technical field of coal mine sampling. It relates to a deep-hole fixed-point airtight sampling device and method for coal mines. Sampling is carried out using the deep-hole fixed-point airtight sampling device for coal mines. The deep-hole fixed-point airtight sampling device for coal mines includes a connection part connected to a drill pipe, a sampling part threadedly connected to the connection part, and a drill bit provided at the end of the sampling part and connected by threads. The sampling part includes a core-taking outer cylinder, a one-way valve, a telescopic locking mechanism, and a core-taking middle cylinder that are sequentially sleeved inside the core-taking outer cylinder, and a core-taking inner cylinder sleeved inside the core-taking middle cylinder; the core-taking inner cylinder is fixedly connected to the core-taking outer cylinder; the core-taking inner cylinder is connected to the drill bit through a sampling valve, a valve switch is provided on the sampling valve, and the core-taking middle cylinder is connected to the valve switch; the telescopic locking mechanism is driven by high-pressure water inside the drill pipe to push the core-taking middle cylinder to axially move inside the core-taking outer cylinder, thereby driving the valve switch to open and close the sampling valve. The present invention has good airtightness and can be reused.

The invention belongs to the technical field of distillation equipment, and particularly relates to a packed tower distillation system based on a two-stage distributor and a distillation process thereof, comprising a packed tower, an evaporator, a condenser and a storage tank, wherein a two-stage distributor and a two-stage redistributor are arranged in the packed tower, a first gas outlet and a reflux port are arranged at the top of the tower, a first gas inlet and a first liquid outlet are arranged at the bottom of the tower, a liquid return port and a second gas outlet are arranged at the evaporator, a second gas inlet and a second liquid outlet are arranged at the condenser, and a liquid inlet is arranged at the storage tank; wherein valves are arranged between the second liquid outlet and the reflux port and between the second liquid outlet and the liquid inlet, and a sampling valve is arranged between the second liquid outlet and the liquid inlet, and by adopting the two-stage distributor and the two-stage redistributor, it is convenient to adjust the distributor and the redistributor to open a single stage or two stages according to the reflux amount, so as to avoid overflow due to excessive reflux amount and uneven liquid distribution, and the operation flexibility is large and the stability is good.

The invention relates to an atmospheric pressure photo ionization rapid desolventizing device and method, and the device comprises a sampling valve which is installed on a sampling pipe of a high-pressure reactor and can be opened and closed according to a preset frequency; the atomizing unit is mounted on the sampling pipe at the downstream of the sampling valve and is used for atomizing a sample solvent; an inlet of the laval spray pipe is connected with an outlet of the sampling pipe, and an outlet of the laval spray pipe is led to a normal-pressure photo ionization area, so that a solvent is subjected to flash evaporation removal, and a product flows to the photo ionization area to realize ionization; wherein the Laval nozzle is provided with a temperature control system which is used for controlling the temperature of the Laval nozzle. According to the method, the solvent can be quickly removed, the integrity of thermal instability components is ensured, and the analysis accuracy is improved.

The invention relates to the technical field of ship construction, in particular to a method for testing a pressure sampling hose during vacuumizing of an insulating layer of an LNG ship. The invention relates to a method for detecting a pressure sampling hose during vacuumizing of an insulating layer of an LNG (Liquefied Natural Gas) ship, which comprises the following steps of: firstly, connecting one of a main-layer hose and a secondary-layer hose to a sampling valve of a secondary insulating layer, and connecting a pressure detection assembly to the hose; opening a sampling valve of the secondary layer, detecting initial pressure data, then starting a vacuum pump to vacuumize the layer, closing the sampling valve of the secondary layer after the pressure is stable, and if the pressure in the hose is not changed, proving that the hose is qualified; then the other hose is detected as well; after the two hoses are inspected to be qualified, the main-layer hose and the pressure detection assembly are connected to the main layer, the secondary-layer hose and the pressure detection assembly are connected to the secondary layer, and the main layer and the secondary layer are subjected to air exhaust until the target values are reached respectively. Therefore, the problem that the detection period is long due to the fact that time and labor are wasted when the pressure sampling hose is independently detected in the prior art is solved.

The application provides a mixed gas preparation process and device with sampling, and belongs to the technical field of gas preparation. The application realizes backtracking detection of the sample of the mixed gas and the sample of the single-component gas source when the subsequent mixed gas is abnormal by sampling and storing the single-component gas source and sampling and storing the mixed gas, so that it is convenient to quickly and accurately determine which link in the preparation process has a problem, and it is convenient to subsequently correct and modify the process. In addition, the main valve core and the sampling valve core are arranged in the main gas channel and the sampling gas channel in the single-component sampling assembly and the mixed sampling assembly, respectively, the main valve core is closed or opened through the expansion and contraction of the switch assembly, the sampling valve core is opened or closed by moving the sampling storage tank driven by the switch assembly, the sampling gas channel is closed when the main gas channel is opened, and the main gas channel is closed when the sampling gas channel is opened, so that the gas flow in the sampling and mixing preparation process is not interfered with each other, and the quality of the mixed gas is ensured.

The utility model discloses an online purification device for a hydraulic station, which relates to the technical field of purification of hydraulic stations, is used for solving the problems in the prior art and comprises a purification device frame, a water absorption filter, a precision filter and a control cabinet are arranged on the purification device frame, the water absorption filter is connected with an oil inlet pipe, and the precision filter is connected with an oil outlet pipe. The water absorption filter is connected with the precision filter through a pipeline, and the end of the oil inlet pipe is an oil inlet pipe opening; a variable frequency gear pump, an oil inlet sampling valve, an oil inlet window and a first pressure sensor are sequentially arranged on the oil inlet pipe from an oil inlet pipe opening to the water absorption filter; according to the scheme, online purification is conducted, the structural design is reasonable, the matching effect is good, the cleanliness and the water content of the purified oil product can be obviously improved, the oil product quality is guaranteed, meanwhile, energy consumption is reduced, manual guarding is not needed, the energy consumption is reduced, and the production efficiency is improved. And the labor intensity of workers is reduced.

The utility model provides a plunger sampling valve, which relates to the technical field of sampling valves, and comprises a valve body, an inner cavity is arranged in the valve body, an inlet end is arranged on the valve body corresponding to the inlet end of the inner cavity, an outlet end is arranged on the valve body corresponding to the outlet end of the inner cavity, a rubber head is arranged in the inner cavity, and the rubber head is connected with the inner cavity. And the upper rubber head is embedded on the valve ball. By arranging the second through pipe in the valve rod and arranging the first through opening and the second through opening in the bottom, the valve rod can be used as a multi-through pipe, all the formed inner cavities and through holes can be connected with different functional structures, and the flowing direction of sampling media can be controlled by moving the positions of the through holes. According to the utility model, by combining the designed storage device, the quantitative sampling of the medium can be realized, the sampling amount can be conveniently controlled by a user, and the sampling of the medium by the user is greatly facilitated without depending on external measuring equipment and user experience.

The utility model relates to the technical field of coal slurry pipeline sampling, in particular to a coal slurry sampling device which comprises a sampling valve, the sampling valve is installed on a pipe body of a coal slurry pipeline, the two ends of the coal slurry pipeline are fixed to corresponding pipe openings of a coal slurry pump and a coal slurry groove respectively, and the connecting position of the sampling valve and the coal slurry pipeline is a V-shaped connector. The joint is blocked by the V-shaped valve clack; the coal slurry sampling device has the beneficial effects that the distance between the valve clack and the coal slurry pipeline and the distance between the valve seat and the coal slurry pipeline are moderate, on one hand, coal slurry is not easy to deposit in a space above the valve clack, and on the other hand, the valve clack does not extend into the coal slurry pipeline, so that the coal slurry in the coal slurry pipeline does not scour the valve clack; the V-shaped valve body can be provided with an optimal angle according to the mounting position of the sampling device, the whole valve body is in a streamline design, an inner cavity of the valve body has no dead angle, the flow channel surface is smooth, and coal slurry is not easy to hang on the inner wall.

The utility model discloses a high-pressure propylene pump sealing liquid recycling system which comprises a high-pressure propylene pump, a first pipeline, a root valve, a sight glass, a filter, a second pipeline, a sampling valve, a main body oil collecting groove, a third pipeline, a pneumatic diaphragm pump, a fourth pipeline, a switch valve, a waste liquid discharging valve and a sealing liquid tank. The discharge cavity of the mechanical seal on the high-pressure propylene pump, the first pipe, the filter, the second pipeline, the main body oil collecting tank, the third pipeline, the pneumatic diaphragm pump, the fourth pipeline, the sealing liquid tank and the discharge cavity of the mechanical seal on the high-pressure propylene pump are communicated in sequence to form circulation; the root valve and the sight glass are arranged on the first pipeline; the sampling valve is arranged on the second pipeline; a liquid level meter is arranged on the main body oil collecting tank; the switch valve and the waste liquid discharge valve are arranged on the fourth pipeline, and the waste liquid discharge valve is located on the downstream of the switch valve. By adopting the closed system, the sealing liquid is filtered, collected and replenished, so that the frequency of replacing the mechanical seal is reduced, the operation risk and supervision are reduced, and the cost is reduced.

The utility model provides a closed sampling valve with a corrosion-resistant function, which comprises a sampling valve, the sampling valve consists of a stop valve and a sampling mechanism, the sampling mechanism is connected with the outlet end of the stop valve, the stop valve comprises a valve body, a connecting flange, a valve handle and a valve core, and a cleaning mechanism is fixedly mounted at the bottom of the valve body. The closed sampling valve is used for closed sampling of media, the whole sampling process is operated in a closed environment, the pollution problem caused by medium leakage can be avoided, the closed sampling valve is particularly suitable for closed sampling of volatile and corrosive media, the cleaning mechanism is arranged and can be used for discharging residual media in the valve body, and the sampling efficiency is improved. According to the closed sampling valve, the problem of corrosion of the sampling valve caused by medium residues is avoided, the sampling mechanism is arranged, sealing connection of the sampling bottle can be facilitated, the leakage problem in the sampling process is prevented, meanwhile, the sampling pipe is plugged after sampling, dust is prevented from entering the sampling pipe to affect subsequent sampling operation, and the subsequent sampling precision of the closed sampling valve is improved.

The present invention belongs to the technical field of cooling water dosing and purification, and specifically relates to a VVER nuclear island equipment cooling water dosing and purification system and method. The present invention includes a slow-release agent box, a dosing pump 1, a dosing pump 2, a sampling valve, a one-channel dosing system inlet valve, a one-channel nuclear island equipment cooling water pump 1, a one-channel nuclear island equipment cooling water pump 2, a cooling water pump 1 outlet check valve, a cooling water pump 2 outlet check valve, a cooling water pump 1 outlet electric valve, a cooling water pump 2 outlet electric valve, a cooling water pump 1 inlet electric valve, a cooling water pump 2 inlet electric valve, a two-channel dosing system inlet valve, a two-channel dosing system and a filter outlet main valve, and a filter outlet valve. The present invention can maintain the concentration of copper ions and the like in the cooling water of the nuclear island equipment within a normal range, thereby ensuring the safe and reliable operation of the VVER type unit.

The utility model relates to the technical field of sampling, in particular to a sampling device, which comprises a sampling negative pressure pipeline and is characterized by further comprising a sampling pipe, a connecting pipe, a sampling barrel and a vacuum sampling valve, and a sampling hole communicated with the inside and the outside is arranged on the outer side of the lower portion of the sampling negative pressure pipeline. The sampling device is reasonable and compact in structure, the upper end of the sampling barrel and the lower end of the connecting pipe are fixedly installed together in a sealed mode, the vacuum sampling valve is opened, the sampling hole is communicated with the sample outlet hole, the pressure in the sampling barrel and the pressure in the sampling negative-pressure pipeline can be consistent, normal sampling can be achieved, and a material well sampling pipe and the connecting pipe in the sampling negative-pressure pipeline flow into the sampling barrel; external air can be prevented from entering the sampling negative pressure pipeline during sampling to influence material reaction, the process stability can be ensured, the sampling test accuracy can be improved, and the sampling device is convenient to operate, high in sampling efficiency, capable of meeting the requirements of daily sampling operation, simple to operate and convenient to clean, and has a wide application prospect. And the convenience of equipment maintenance and the production stability can be obviously improved.

The utility model relates to the technical field of chromatographic analysis, and particularly provides a chromatographic detection system. The chromatographic detection system comprises a sampling valve, a multi-way valve, a first flow path, a second flow path, a third flow path, a first detection device and a second detection device, the sampling valve is provided with a plurality of sample inlets and a sample outlet, the plurality of sample inlets are respectively communicated with corresponding sampling points to be detected, the sample outlet is communicated with an inlet of the multi-way valve, and the first flow path is communicated with the first detection device. The multi-way valve comprises a first outlet, a second outlet and a third outlet, the first outlet of the multi-way valve is communicated with the first flow path, the second outlet of the multi-way valve is communicated with the second flow path, the third outlet of the multi-way valve is communicated with the third flow path, and the outlet of the first flow path and the outlet of the second flow path are respectively communicated with the first detection device; and an outlet of the third flow path is communicated with the first detection device. The chromatographic detection system provided by the utility model is used for sampling, analyzing and detecting a plurality of sampling points and samples with different phase states in the same process place.

The application relates to the technical field of sampling devices, and specifically discloses a sampling device for electroplating wastewater, which comprises an adjusting tank, water outlets are communicated with the upper, middle and lower liquid surfaces of the adjusting tank, water valves are arranged at the ends of the water outlets close to the upper, middle and lower liquid surfaces of the adjusting tank, sampling pipes are communicated with the ends of the water outlets away from the adjusting tank, sampling valves are arranged on the sampling pipes, sampling boxes are arranged at the ends of the sampling pipes away from the water outlets, sampling mechanisms are arranged in the sampling boxes, the water valve at the upper liquid surface of the adjusting tank is opened, the sampling valve is opened, the electroplating wastewater can flow into the sampling pipes through the water outlets, the sampling mechanisms can respectively sample the electroplating wastewater at the upper, middle and lower liquid surfaces of the adjusting tank, and the samples can be stored in the sampling boxes, and then the sampling of the middle and lower liquid surfaces is sequentially carried out after the sampling is completed, so that the electroplating wastewater in the adjusting tank is subjected to layered sampling, the accuracy and comprehensiveness of the samples are improved, and the process control accuracy is improved.

1. The name of this design product: vacuum sampling valve. 2. Purpose of this design product: used to sample liquids in pipes or containers. 3. The key design point of this design product lies in the combination of shape and pattern. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The utility model relates to an online continuous monitoring system for high-concentration carbon dioxide. Comprising a sampling probe, a sucking pump and a CO2 analyzer, the sampling probe is connected with an inlet of the sucking pump through a sampling pipeline, a sampling valve, a filter and a condenser are installed on the pipeline, and an outlet of the sucking pump is connected with an emptying pipeline and a measuring pipeline at the same time; the measuring pipeline is connected to a gas inlet of the CO2 analyzer, a filter and a condenser are mounted on the measuring pipeline, and a gas outlet of the CO2 analyzer is connected to another emptying pipeline; the device further comprises a half-course calibration pipeline and a whole-course calibration pipeline, one end of the half-course calibration pipeline is connected to a reversing solenoid valve arranged on the measuring pipeline, and one end of the whole-course calibration pipeline is connected to the sampling pipeline; the device further comprises a back flushing pipeline. The system has a calibration function and a function of cleaning the sampling probe in a back flushing manner, and the accuracy of monitoring the CO2 concentration is improved by calibrating the system and keeping the sampling probe clean.

The utility model provides a sampling device for quality detection of etching liquid, which comprises a sampling valve body, the lower end of the sampling valve body is fixedly connected with a blanking pipe orifice, the lower end of the blanking pipe orifice is provided with a material taking outer frame, the lower inner wall of the material taking outer frame is fixedly connected with a cross-shaped bottom plate, the lower inner wall of the cross-shaped bottom plate is fixedly connected with four electric guide rails respectively, and the four electric guide rails are fixedly connected with the sampling valve body. An electric guide rail is fixedly connected to the upper end of the cross-shaped bottom plate, a sliding block is fixedly connected to the output end of the electric guide rail, an arc-shaped buckle ring is fixedly connected to the upper portion of the sliding block, a material receiving storage position is fixedly connected to the middle of the cross-shaped bottom plate, and a material storage one-way electromagnetic valve is arranged at the lower end of the discharging pipe opening. A liquid agent is conveyed through the storage one-way electromagnetic valve below the sampling valve body, samples in multiple time periods can be sequentially collected, the samples sampled for multiple times can be directly classified and stored, a material taking outer frame does not need to be manually replaced for high frequency, and the convenience of the sampling process is guaranteed.

The utility model provides a liquid 1-butene vaporization device, and relates to the technical field of chemical raw material quality inspection, the liquid 1-butene vaporization device comprises a sampling steel cylinder, a vaporization chamber, a non-adsorption aluminum foil gas bag and a six-way gas sample injection valve, the device ensures the controllability of the total amount of vaporized sample gas and the consistency of the composition proportion by accurately quantifying a liquid sample, and the liquid 1-butene vaporization device is simple in structure and convenient to operate. By means of complete vaporization of the vaporizing chamber and buffering of the non-adsorption aluminum foil air bag, vaporized sample components are mixed evenly, light and heavy components of a gas sample collected by the six-way gas sample injection valve are distributed evenly, the sample detection accuracy is ensured, the sample cannot be adsorbed in the sampling process, and the sampling efficiency is improved. According to the device, a taken sample can be completely vaporized through the vaporizing chamber, and a completely vaporized gaseous sample can be completely transferred through the arrangement of the one-way valve, so that errors cannot be caused to later detection of the sample, and the problems that in the prior art, a detection result is deviated, and errors are easily caused to later detection of the sample are solved.