370 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 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.

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.

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 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 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 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.

The application discloses a production process of a stepped boosting fast replacement hydrogen long tube trailer, which comprises the following steps: checking before replacement, checking residual pressure and temperature, replacing and emptying a pipeline, switching to a sampling branch, opening a valve for sampling, closing a sampling valve, analyzing a sample, calculating a maximum hydrogen estimation amount required for replacement, filling high-purity hydrogen, replacing and filling a pipeline, filling the hydrogen long tube trailer, repeatedly filling, detecting a sample again, and detecting whether a replacement result is qualified or not. The application can quickly, efficiently and safely replace hydrogen tanks of a tube bundle trailer, can reduce replacement time of the tube bundle trailer, can reduce hydrogen consumption during replacement, and can reduce average transportation cost of hydrogen.

The invention relates to the technical field of operation and maintenance of high-pressure gas insulated electrical equipment, and particularly discloses a pipeline rapid sampling valve supporting non-stop gas operation and an operation method. The valve comprises a valve body, an air inlet valve, an air outlet valve, a detection valve and a detection port assembly, wherein an air inlet cavity, an air outlet cavity and a detection cavity which are communicated with one another are arranged in the valve body. The detection port assembly adopts an automatic sealing design and comprises a connector shell, a valve element and a reset spring, and leakage-free insertion and extraction of a detection probe are achieved. The valve is also integrated with a pressure gauge to monitor the system pressure, and the detection cavity adopts a tapered flow channel and is provided with a spiral vortex guide plate to ensure the representativeness of the sampled gas. According to the operation method, the three independent valves are controlled, so that on-line sampling is completed under the condition that main inflation is uninterrupted. According to the invention, the problems of low efficiency and gas leakage risk caused by interruption of operation and disassembly of a joint in a traditional sampling mode are solved, and the safety and working efficiency of sampling operation are remarkably improved.

An improved urine collection bag assembly is presented. The improved urine collection bag assembly of the present invention features a one-way flow control valve to prevent the backflow of urine into a urinary catheter and subsequently, into a patient's bladder. The improved urine collection bag also features at a bacterial monitoring wick, an air vent, and a sampling port among other features. In an exemplary embodiment, the one-way flow control valve is a duckbill style valve and the sampling valve is a slider style valve.

A non-propulsive turbomachine (2) for an aircraft (M) fuel conditioning system (Q) comprising: a first compressor (21), a combustion chamber (23) supplied by a first airflow (A1) flowing in a general supply channel (30) connected to the first compressor (21), a second compressor (22) connected to the general supply channel (30) by a first sampling channel (31), so as to be supplied with a second airflow (A2) from the first compressor (21), and to a cabin air conditioning device (6), a single gas turbine (24) connected to both the first compressor (21) and the second compressor (22) by a single turbomachine shaft (25), a second sampling channel (33) connecting the general supply channel (30) and the cabin air conditioning device (6), and at least one sampling valve (4),mounted on the first sampling channel (31) and configured to allow or prevent the circulation of the second airflow (A2) in the sampling channel (31). Abstract figure: Figure 3,

The utility model relates to the technical field of sampling equipment, and provides a real-time online sampler which comprises a sampling valve body, a three-way pipe and a sampling air cylinder, one end of the three-way pipe extends into the sampling valve body, and a notch formed in the three-way pipe is used for receiving materials in the sampling valve body; the output end of the sampling cylinder is connected with a sampling head which extends to the notch of the three-way pipe, and the sampling head and the three-way pipe form piston type movement. Through the arrangement of the three-way pipe, the sampling cylinder and the sampling head, the sampling cylinder pushes the sampling rod through the cylinder connecting shaft, so that the sampling head slides along the horizontal pipeline of the three-way pipe, and the sampling head moves to the notch of the three-way pipe to form piston type movement to complete sampling.

This utility model discloses an anti-oxidation sampling device for the negative electrode electrolyte of a vanadium redox flow battery energy storage system, relating to the field of vanadium redox flow batteries. It includes a three-way pipe, an end cap, and a sampling assembly. The upper and lower ends of the three-way pipe are connected to pipes respectively. A valve for connecting a sampling valve is installed at the top of the upper pipe, and a manual valve is connected to the bottom of the lower pipe. A soft plug is installed in the opening at the left end of the three-way pipe, and a through hole with a diameter smaller than that of the soft plug is opened at the center of the end cap. The end cap is detachably installed at the left end of the three-way pipe. By incorporating a valve, this utility model allows the device to be directly installed at any valve position in the vanadium redox flow battery system, breaking through the dependence of traditional bypass sampling on pipe layout. This enables precise sampling and analysis of local electrolyte within the system, greatly expanding the application range of the sampling device and meeting the needs for electrolyte state assessment in different monitoring scenarios.

The invention discloses an underground fluid in-situ sampling system and method, and belongs to the technical field of underground fluid sampling. The device comprises a sampling valve body, an air pressure driving assembly and a sample receiving assembly, the sampling valve body comprises a valve body, a three-way cavity formed in the valve body and a first one-way valve, the first one-way valve is arranged in a first hole channel of the three-way cavity, and the first one-way valve can be opened by external pressure; the air pressure driving assembly comprises an air supply pipe used for supplying pressurized and compressed air, and the air supply pipe is communicated with the second hole channel of the three-way cavity. The sample receiving assembly comprises a sampling pipe, one end of the sampling pipe is communicated with the third hole channel of the three-way cavity, and the other end of the sampling pipe can output fresh formation fluid. The device can be suitable for long-term deployment in a limited space, and the original state of fluid is kept to the maximum extent.

The utility model discloses a flame-proof type reaction kettle on-line pH analyzer, which relates to the technical field of pH detection, and comprises an explosion-proof cabinet, a measuring storage tank and a diaphragm pump are fixedly connected in the explosion-proof cabinet, one side of the measuring storage tank is provided with an electrode interface penetrating to the outer side of the explosion-proof cabinet, the electrode interface is fixedly connected with a pH electrode, and the other side of the measuring storage tank is provided with a pressure sensor. A liquid inlet of the measuring storage tank is connected with a liquid outlet of the diaphragm pump; a liquid inlet of the diaphragm pump is connected with a liquid inlet pipe, a soaking liquid pipe and a flushing liquid pipe, a liquid outlet of the measuring storage tank is connected with a backflow pipe and a liquid discharging pipe, the backflow pipe is connected with a closed sampling valve in series, and the closed sampling valve is arranged on the outer side of the anti-explosion cabinet. And liquid valves are arranged on the liquid inlet pipe, the soaking liquid pipe, the flushing liquid pipe, the return pipe and the liquid discharge pipe. According to the on-line pH value analyzer for the flame-proof reaction kettle, the layout cost is low; the pH electrode is convenient to disassemble, and the explosion-proof effect is good; and automatic detection can be realized.

The utility model discloses a vacuum sampling device of high risk reaction, include: reaction kettle, sampling valve, vacuum system, nitrogen system, sampling bottle, wherein, the reaction kettle with sampling valve connects, nitrogen system with sampling valve connects, sampling valve with sampling bottle connects, vacuum system directly with sampling bottle connects. The utility model relates to equipment less, low in cost, and the transformation is simple. The on -line long -distance sampling of liquid-liquid two -phase high risk reaction can be realized, and sampling safety is high. Can carry out the separation of liquid-liquid two -phase while sampling, and sampling efficiency is high.

The utility model discloses a wear-resistant V-shaped sampling ball valve, and belongs to the technical field of sampling valves. Comprising a valve body, a ball valve element is arranged in the valve body, a valve rod for controlling the ball valve element to rotate is fixedly connected to the ball valve element, a stop rod is fixedly connected to the outer surface of the valve rod, a dial is fixedly connected to the valve body, and a limiting pipe is arranged on the outer surface of the dial in the circumferential direction; the two ends of the limiting pipe are fixedly connected with the dial through connecting blocks, the end, away from the dial, of each connecting block is fixedly connected with the limiting pipe, and the outer surface of each limiting pipe is sleeved with a sleeve. The ball valve does not need to be adjusted back and forth to control the liquid outlet amount, so that the adjustment is more accurate, the liquid outlet amount is prevented from being suddenly large and suddenly small, the probability of solution splashing during sampling is reduced, and the safety of workers is protected.

The invention discloses a sampling device capable of automatically closing, which relates to the field of sampling devices and comprises a sampling valve mounted on a medium pipeline. The sampling valve comprises a valve body shell fixedly installed outside the medium pipeline through a flange, a valve rod movably installed in the valve body shell and a sampling bottle connected and installed below the valve body shell through a sampling pipeline, a medium flow channel communicated with the sampling pipeline is formed in the valve body shell, and a control part is installed at one end of the valve body shell; the valve rod can move to a first position and a second position under the control of the control part, when the valve rod moves to the first position, the medium flow channel is communicated with the interior of the medium pipeline, and when the valve rod moves to the second position, the medium flow channel is separated from the interior of the medium pipeline. By arranging the sampling valve, when a pipeline needs to be sampled, sampling can be achieved only by directly controlling the valve rod to move through the control part, and operation is convenient and fast.

The utility model provides a plunger type sampling valve which comprises a valve body and a sampling pipe, one side of the valve body is communicated and connected with the sampling pipe, a plunger is connected in the valve body in a sliding mode, one end of the plunger is fixedly connected with a connecting column, a rubber plug is arranged on the periphery of the connecting column, a threaded groove is formed between the connecting column and the rubber plug, and the threaded groove is communicated with the sampling pipe. A fixing screw is in threaded connection with the interior of the rubber plug, the other end of the fixing screw is located in the connecting column, a sealing ring is fixedly arranged on the outer side wall of the plunger, filler is arranged in one end of the valve body, a filler pressing plate is arranged at the bottom end of the filler, and a protective sleeve is fixedly connected to one end of the valve body. And a valve rod is arranged in the protective sleeve. According to the sampling valve, the design is novel, the structure is simple, the interior of the valve body has a relatively strong sealing effect, so that the working efficiency of the sampling valve can be improved, materials in the device are not easy to leak into the valve body, the normal work of the sampling valve is prevented from being influenced, and the sampling valve is relatively practical.