198 results about "Gas uptake" patented technology

The invention relates to a gas discharge detection method, system and equipment based on an ultraviolet spectrum and a medium. The method comprises the following steps: transmitting a frequency-modulated ultraviolet light beam to a gas chamber to be detected, synchronously collecting and processing a transmission light signal in a branching manner, and simultaneously obtaining a modulated spectrum signal for gas absorption analysis and a discrete photon pulse signal for detecting a discharge event; respectively processing the two paths of signals, and extracting sulfur dioxide concentration information and photon radiation characteristics; fusing the two types of features to construct a dynamic feature vector, and obtaining a discharge state grade by using a dynamic Bayesian network diagnosis model; and finally, combining the concentration and state information, and outputting the membership degree of the discharge duration through fuzzy logic. By adopting the method, the fast process and the slow process of partial discharge can be cooperatively monitored, and the early detection sensitivity and the diagnosis reliability are improved.

The present invention proposes a separator of spray washing and swirl centrifugation composite and a separation method thereof, which belongs to the technical field of dust removal and gas absorption devices. In this method, washing liquid is sprayed through a washing liquid nozzle at the inlet of the contraction section of the venturi tube, so that the washing liquid is effectively dispersed into droplets, thereby improving the dust removal efficiency and gas absorption efficiency. The swirler in the straight cylinder at the rear of the expansion section of the venturi tube promotes the formation of a swirl in the gas. Under the action of centrifugation, the droplets and dust are thrown to the wall of the straight cylinder and eventually fall into the dirty liquid cavity, which can achieve effective removal of dust and droplets in the airflow. The swirler of the present invention includes two types: radial swirler and axial swirler, which can be applied to two working conditions of low air flow and high air flow, respectively. The present invention has a simple structure, compact design, and is easy to use. It can be widely used in the fields of dust removal, desulfurization, decarbonization, etc.

The invention provides a hollow-core optical fiber internal gas pressure regulating device and method. The device comprises two high-pressure gas chambers, and an optical fiber interface of a second high-pressure gas chamber and a row of optical fiber interfaces of a first high-pressure gas chamber are used for being communicated with the two ends of a hollow-core optical fiber respectively; the gas path is respectively connected with gas inlets and outlets of the two high-pressure gas chambers; the vacuum pump is connected with the gas inlet-outlet through a gas path; the high-pressure gas source is connected with the gas inlet and outlet through a gas path; the number of the optical detection assemblies is the same as that of the hollow-core optical fibers, each optical detection assembly is connected with a tail fiber, and each tail fiber is connected with the other row of optical fiber interfaces of the first high-pressure air chamber and is aligned and coupled with the corresponding hollow-core optical fiber in the first high-pressure air chamber. A set of gas path equipment is adopted, residual gas is extracted from the two ends of the hollow-core optical fiber, high-pressure gas is filled, the internal pressure of the optical fiber can be rapidly improved, the problem of additional attenuation caused by gas absorption is solved, and the long-term use stability of the optical fiber is enhanced.

The utility model relates to a solid hydrogen storage tank system, and belongs to the technical field of using gas absorbents. The system comprises a hydrogen storage tank, a water storage tank, a first pump, a second pump and a heater, a seal head is arranged at the top of the tube pass of the hydrogen storage tank and is welded with a gas inlet and outlet forged tube which is connected with a pressure gauge and a temperature transmitter; a tube plate is fixed at the top of the hydrogen storage tank shell pass, the tube plate is connected with a tube pass barrel flange, a heat exchange tube is arranged in the hydrogen storage tank, a hydrogen storage material compressed into a cake shape is filled in the heat exchange tube, and an expansion connection tube plate is additionally attached to the upper end of the heat exchange tube through strength welding; the shell side wall of the hydrogen storage tank is provided with a water outlet and a water inlet, the water outlet is connected with a first pump, the first pump is connected with a water storage pond, the water storage pond is further connected with a second pump, the second pump is connected with the water inlet, and a heater is arranged between the water inlet and the second pump. When the solid hydrogen storage tank absorbs hydrogen, water circulates to take away heat, and when hydrogen is released, water is heated to enter the tank to provide heat, so that the reaction rate during hydrogen absorption and release is effectively improved, and the working efficiency of hydrogen absorption and release of the hydrogen storage tank is further improved.

The utility model relates to the technical field of mine hole sealing, in particular to a deep hole blasting poisonous and harmful gas absorption and hole sealing cooperation device which comprises a first container, a built-in sleeve, a connecting cover, a second container, anti-skid claws, bags, a PC grouting pipe and a steel grouting pipe. The bag is stabilized by the binding tube and the buckle and does not displace; the PC grouting pipe penetrates through the interior of the second container and is fixed to the buckle on the connecting cover, and the buckle of the connecting cover is fixed into the groove of the first container. The assembled device is placed in a rock drill hole, the device is fixed in the drill hole through the anti-skid hook claws, grouting is conducted on the two bags through the PC grouting pipe, and when the pressure rises to 0.8 MPa, the explosion valve in the bag close to one side of the hook claws is opened. When the pressure is increased to 1.2 MPa, the explosion valve in the bag close to one side of the grouting opening is opened and is fastened on the inner wall of the rock drill hole after expansion, so that an inner section hole sealing space is formed in a sealing manner, continuous grouting is performed, when the pressure is increased to 1.6 MPa, grouting on the PC grouting pipe is stopped, the grouting pipe is blocked, then grouting on the steel grouting pipe is performed, and the pressure is increased to 1.2 MPa; and grouting is stopped until the inner section hole sealing space is filled with the grout, and the drilled hole is sealed. After the mining water-gel explosive is blasted, the reactant in the first container reacts with carbon monoxide at high temperature to be converted into carbon dioxide, and after blasting is completed, if other toxic and harmful gas exists, the reactant further reacts with the carbon dioxide through the second container.

We provide a cavity ring-down spectrometer that enables accurate measurement of extremely low-temperature samples. [Solution] The gas absorption spectrometer is a gas absorption spectrometer for measuring a sample gas and comprises a resonator 100A including at least two mirrors, a laser light source that emits laser light for irradiating the resonator 100A, and a photodetector for detecting the light extracted from the resonator. The resonator includes an inner chamber 1A that houses the mirrors 21 and 22 and forms a measurement space 15 into which the sample gas is introduced, an outer chamber 3A disposed outside the inner chamber 1A for vacuum insulation of the measurement space 15 from the outside, and a cooler 9 disposed within the outer chamber 3A, spaced apart from the inner chamber 1A, and having an internal space through which a refrigerant flows.

The invention discloses a hydrogen chloride gas absorption device-modified double-path pure water absorption system and a process method, and relates to the technical field of chemical waste gas treatment and resource recovery. The device comprises a hydrochloric acid synthesis furnace, a first-stage falling film absorber, a second-stage falling film absorber, a combined tail gas absorption tower and a tail gas purification unit which are sequentially connected, as well as a pure water supply system and an automatic control system. The system is characterized in that the pure water supply system is divided into two independent branches through a water inlet header pipe to be connected to the combined tail gas absorption tower, and each branch is provided with an automatic regulating valve. According to the method, a traditional single-path water absorption system is transformed into a double-path standby system through low-cost technical improvement of an existing single-path absorption device, automatic and rapid switching to the other path when one path breaks down is achieved, and therefore the problems that in the prior art, production is discontinuous, product concentration fluctuation is large, and potential safety hazards exist are effectively solved; the effects of efficiently, continuously and safely producing high-concentration hydrochloric acid and realizing near-zero emission of tail gas are achieved.

1. Name of the product in this design: Gas Absorption Cell (Long Optical Path Multiple Reflections). 2. Purpose of this design: for gas detection and gas measurement. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

A calibration method includes receiving data characterizing a first pressure broadening coefficient, a second pressure broadening coefficient and a third pressure broadening coefficient of the target gas absorption associated with a first background gas, a second background gas and a third background gas, respectively. The method further includes, determining a molar ratio associated with the second background gas and the third background such that an effective pressure broadening coefficient associated with a target gas mixture including the second background gas and the third background gas mixed at the determined molar ratio is within a predetermined threshold of the first broadening coefficient. The target gas mixture further includes a target gas. The method also includes calibrating a gas analyzer using the target gas mixture to replace the calibration of the target in the first background gas. The calibration is based on absorption of electromagnetic radiation by the target gas in the target gas mixture.

A gas sensor (100) is described, which comprises a gas absorption cell (6), configured to house a gas to be detected, an incandescent light bulb (1) comprising a glass bulb (2) and a filament (3) enclosed in the glass bulb (2). The gas sensor (100) also comprises a first detector (4), configured to detect radiation in a first wavelength range of 1-5 um, and a control unit (7), configured to provide a drive current through the filament (3) of the incandescent light bulb (1) during operation of the gas sensor (100). The gas sensor comprises a second detector (5), configured to detect radiation in a second wavelength range of 6-15 µm radiation. The second detector (5) is arranged such that the second detector (5) is illuminated by radiation from the incandescent light bulb (1) during operation of the gas sensor (100).

A system (10) includes a turbine (56) configured to rotate a rotary shaft (118) about an axis of rotation (700). The system (10) further includes a gas capture system (20) having an absorber (452) configured to absorb an undesirable gas (542) from an exhaust gas (62) into a solvent (544). The gas capture system (20) also includes a stripper (454) configured to strip the undesirable gas (542) from the solvent (562). Additionally, the gas capture system (20) includes a solvent circuit (458) coupled to the absorber (452) and the stripper (454). The solvent circuit (458) is configured to circulate the solvent (544) through the absorber (452) and the stripper (454). Furthermore, the turbine (56) is configured to rotate at least one of the absorber (452) or the stripper (454).

The utility model discloses sensor packaging and welding equipment, which belongs to the technical field of sensor welding and comprises a worktable, a fixing frame fixedly mounted on the worktable, a movable guide rail fixedly mounted at the bottom of the fixing frame, an electric telescopic cylinder fixedly mounted on the movable guide rail, and a laser welding head fixedly mounted on the electric telescopic cylinder. A clamping table is arranged at the top of the workbench, a gas filtering mechanism is arranged on the fixing frame and comprises a first fixing frame fixedly installed on the fixing frame, and one side of the first fixing frame is connected with a suction pipe installed on the fixing frame. Through the arrangement of the gas filtering mechanism, irritant gas generated in the welding process of the sensor can be filtered, the irritant gas is exhausted after being absorbed and filtered, the influence of drifting of the irritant gas on the working environment is effectively avoided, meanwhile, the harm to human health is reduced, and the welding quality of the sensor is improved. And the welding equipment is more practical.

This enhances the carbon dioxide absorption efficiency even when the gas supplied to the carbon dioxide capture device is at a low temperature. [Solution] The carbon dioxide recovery device comprises a gas introduction line into which gas containing carbon dioxide is supplied from the outside; a scrubbing tower that cleans the gas by bringing the gas supplied to the gas introduction line into contact with a cleaning solution; an absorption tower into which an absorbent liquid capable of absorbing carbon dioxide in the gas is introduced and absorbs the carbon dioxide in the gas that has passed through the gas scrubbing tower; a regeneration tower that heats the absorbent liquid that has absorbed carbon dioxide, separates the carbon dioxide from the absorbent liquid, and regenerates the absorbent liquid; and a heating unit that heats the gas supplied to the absorption tower.

The present application relates to the technical field of hydrocarbon removal purifier, provide a kind of portable hydrocarbon removal purifier, including: purifier body, the outer surface of the purifier body is fixedly connected with suction long tube, one end of the suction long tube is fixedly connected with thick cylinder, the outer surface of the thick cylinder is equipped with multiple hollow grooves, the inner wall of the thick cylinder is fixedly connected with multiple lugs, the outer surface of multiple The lug is fixedly connected with spring two, one end of multiple spring two is fixedly connected with movable ring, the inner wall of the thick cylinder is equipped with multiple sliding grooves, the movable ring is slidably connected in the inside of multiple sliding grooves, in the present application embodiment, thick cylinder is absorbed into its inside gas, mainly by external power supply to start motor, motor drives suction fan to rotate, at this time suction fan absorbs gas, dust screen is arranged in the inside of movable ring, mainly used to isolate dust in gas, prevent dust from entering into the inside of purifier body through suction long tube.

The application discloses a medical pipe extruding machine with a waste gas treatment device and relates to the technical field of extruding machine production. The medical pipe extruding machine with the waste gas treatment device utilizes the negative pressure generated in the suction port and the layer pipe when airflow flows at high speed in the annular pipe and the conveying pipe b, absorbs the gas flowing out of the other side outlet of the extruding machine into the annular pipe by using the negative pressure generated in the suction port, and absorbs the waste gas generated by the work in the extruding machine into the inside of the filter cylinder when the layer pipe generates the negative pressure. The waste gas can be sucked into the pipe by using the air pressure difference. Compared with the traditional cleaning mechanism, the pipe only needs to be replaced when the pipe is blocked, the cost is lower, the cleaning is faster, and the suction mechanism can protect the air extractor from being blocked by dirt.

The utility model relates to the technical field of leather production equipment, and provides a gas recovery device for environment-friendly cow split leather production, which solves the problem of insufficient gas absorption caused by design defects of the existing equipment, and comprises a shell, a plurality of spacing plates are arranged in the shell and are arranged at intervals from top to bottom, and the gas recovery device is arranged in the shell. Each partition plate is provided with an opening, the openings in the adjacent partition plates are arranged in a staggered mode, flow guide plates are arranged at the positions of the openings, flow blocking plates are arranged on the partition plates, a plurality of partition tables are arranged between the flow blocking plates and the flow guide plates, and each partition table comprises a vertical barrel and an arc-shaped plate. Each arc-shaped plate is arranged at the top of each vertical barrel, and a plurality of through holes are formed in the peripheral side of each vertical barrel; by means of the through holes formed in the spacing table, gas passes through a liquid layer on the spacing plate, makes contact with absorption liquid and is guided to the two sides of the spacing table under the action of the arc-shaped plates to be retained, and then gas absorption is guaranteed.

This invention relates to a gas absorption cell for spectral parameter measurement, its installation method, and measurement method, belonging to the field of spectral parameter measurement technology. The gas absorption cell includes a gas absorption chamber and light transmission chambers symmetrically arranged on both sides of the absorption chamber. The light transmission chamber includes a containment chamber and a vacuum chamber, with the vacuum chamber located close to the gas absorption chamber. The gas absorption chamber and the vacuum chamber are separated by a third or fourth window, and the vacuum chamber and the containment chamber are separated by a spacer. The containment chamber houses the transmitting or receiving unit of the absorption spectrometer. The gas absorption chamber is filled with the target gas for spectral parameter measurement. The invention employs a five-segment structure consisting of the gas absorption chamber and the containment and vacuum chambers distributed on both sides of it, eliminating the need for a light guide device, resulting in a simple structure and convenient operation.

To improve the measuring sensitivity of a component contained in a gas sample without increasing the cost required in the introduction of a gas absorption spectroscopic system.SOLUTION: The gas absorption spectroscopy system includes a resonator, a light source, a driving device, a control device, and a detector. The resonator includes a first mirror and a second mirror. The light source irradiates the resonator with laser light. The driving device changes a length between the first mirror and the second mirror. The control device controls the drive device. The detector outputs a detection signal corresponding to the detected light to the control device. The drive device sweeps at least one of the first mirror and the second mirror in a wave shape around a sweep center, and adjusts a length between the sweep center and the second mirror to a length between the first mirror and the second mirror when the detection signal is acquired in response to the acquisition of the detection signal by the control device.SELECTED DRAWING: Figure 8

The utility model relates to an improved nitrogen distillate absorption device, which comprises a distillation flask, a splash-proof ball tube, a guide tube, a condensing tube and a conical flask with double connecting balls which are connected in sequence, and a dropping funnel is arranged between the distillation flask and the splash-proof ball tube, and is characterized in that the distillation flask is provided with a temperature control device, the guide tube is U-shaped, and the condensing tube is arranged in the conical flask. The conical flask with the double connecting balls is connected to the lower end of the condenser pipe, and the opening of the conical flask with the double connecting balls is S-shaped. The gas absorption and titration device is simple, clear and accurate, and solves the problems that in the prior art, the heating temperature is too high, the temperature control is unstable, and the heating is not uniform; the gas flow speed is too high, so that the absorption is incomplete; the solution absorbed by the conical flask is easy to splash out, and system errors are easy to generate, so that the test is accurate.

The utility model relates to detection equipment for continuous sample introduction of electronic gas absorption liquid. The detection equipment comprises an ion chromatograph, a peristaltic pump and at least one group of sample introduction components, each group of sample introduction assembly comprises a plurality of gas absorption bottles, a cleaning bottle and a first switching valve, the first switching valve is provided with a plurality of first liquid inlets and a first liquid outlet, the gas absorption bottles and the cleaning bottle are respectively communicated with the corresponding first liquid inlets, the first liquid outlet is communicated with the ion chromatograph, and the first liquid inlet is communicated with the ion chromatograph; a peristaltic pump for providing power for liquid feeding of the ion chromatograph is arranged on an output pipeline of the ion chromatograph; the detection equipment disclosed by the utility model adopts a simple and low-cost structure to replace an existing automatic sampler, and a high-cost long-time nitrogen protection mode is not needed; under the condition of ensuring that the samples are not in contact with the external environment, automatic and continuous sample injection of a plurality of samples is realized, and the accuracy of ultra-trace detection of anions and cations in the electronic gas absorption liquid can be ensured in a specific detection scene aiming at the electronic gas absorption liquid.

An apparatus for compact, folded path optical gas detection / measurement in gas absorption spectroscopy, comprises; a gas cell 307 for containing gas to be analysed with gas exchange ports 308 and at l

The application discloses a natural gas purification system. The system comprises a purification reactor, a low-temperature separator, a flash tank, a regeneration tower and connecting pipelines; a high-pressure gas inlet of the purification reactor is connected with a natural gas pipeline, a medium-pressure gas outlet of the purification reactor is connected with a gas inlet of the low-temperature separator, a liquid phase inlet of the purification reactor is connected with an outlet of a filtering system, and a liquid phase outlet of the purification reactor is connected with a liquid inlet of the flash tank; a gas outlet of the low-temperature separator is connected with the medium-pressure gas inlet of the purification reactor through a cold energy recovery device; a liquid outlet of the flash tank is connected with a liquid inlet of the regeneration tower through a lean-liquid-rich-liquid heat exchanger; a gas phase outlet of the regeneration tower is connected with a regenerated gas pipeline, and a liquid phase outlet of the regeneration tower is connected with an inlet of the filtering system through a lean-liquid pump, the lean-liquid-rich-liquid heat exchanger, the cold energy recovery device and a lean-liquid cooler. The application can recycle and utilize pressure energy of high-pressure gas, strengthen gas absorption and purification effect, reduce the amount of absorption solvent and reduce system energy consumption.

The invention relates to the technical field of waste gas treatment, in particular to flue gas desulfurization treatment equipment for glass bottle production. The device comprises an absorption tower and a smoke inlet pipe for introducing smoke, a liquid storage tank is arranged at the bottom in the absorption tower and is connected with a liquid pump, a separator for separating solids is connected behind the liquid pump, one end of the separator for discharging the solids is connected with dehydration equipment, and one end of the separator for discharging liquid is connected with mixing equipment. After active ingredients are added, the mixture is sent back to the absorption tower for spraying, and drying equipment is connected behind the dehydration equipment; the top of the absorption tower is connected with an exhaust pipe; an automatic spraying mechanism is arranged at the top in the absorption tower, and an anti-scaling mechanism is arranged in the reservoir at the bottom; the spraying rotating disc is designed, rotation can be pushed under the action of flue gas flowing, then rotary mist spray is generated, compared with traditional fixed spraying, the treatment efficiency is higher, the cost is lower, and residues obtained after treatment are greatly reduced.

A composition and method for absorption of a selected gas. The compositions amount to porous liquids that include a nanoporous host material suspended in a solvent in the presence of a gas where the nanoporous host material is configured to exclude the absorption of solvent while providing a porosity for gaseous absorption.

Apparatus for gas detection using gas absorption spectroscopy, comprises; gas cell 805 with at least one gas exchange port; at least one radiation source 801 arranged to transmit a diverging beam thro

The utility model relates to the technical field of dioxo welding machines, in particular to a dioxo welding machine capable of preventing gas leakage, which comprises a welding machine main body and a sealing plate, one side of the welding machine main body is provided with a transmission pipe, the transmission pipe is communicated with the inside of the welding machine main body, the outer side of the transmission pipe is provided with a thread groove, and the sealing plate is arranged in the thread groove. The bottom of the carbon dioxide concentration detector is provided with a gas absorption pipe, the gas absorption pipe extends into the detection chamber, the carbon dioxide concentration detector is in sealed connection with the detection chamber, and one side of the display screen is provided with an alarm lamp. According to the utility model, the carbon dioxide concentration detector is used for detecting the concentration of the gas, and when the concentration of the gas in the detection chamber is detected to exceed the standard, the carbon dioxide concentration detector can send out an electric signal to control the alarm lamp to start working, so that an operator is reminded of gas leakage; operators stop working to overhaul the welding machine, and potential safety hazards in the using process of the welding machine are eliminated.

A gluing device for warm paste production comprises a machine body, a feeding mechanism is arranged on one side of the upper side wall of the machine body, a discharging mechanism is arranged on the other side of the upper side wall of the machine body, a shell is fixedly connected to the upper side wall of the machine body, a threaded sleeve is embedded in one side of the upper side wall of the shell, and a threaded rod is inserted into the threaded sleeve in a threaded mode; the upper end of the screw is fixedly connected with a hand wheel, the lower end of the screw is rotationally connected with a gluing frame, and two symmetrically-distributed guide rods are slidably inserted into one side of the upper side wall of the shell. Compared with the prior art, the glue control device has the advantages that the size of the glue outlet can be freely adjusted through the arranged glue control assembly, so that the glue control device can be adjusted according to the size of the warm paste so as to be suitable for the warm paste of different specifications, the situation of glue waste is avoided, the production cost is reduced, and the flexibility is higher; and through the arranged purification assembly, gas volatilized by glue in the gluing process can be absorbed and purified, and the situation that the gas is inhaled by workers, and the body health of the workers is affected is avoided.

The utility model discloses a high-temperature waste gas treatment and purification device which comprises a shell, a stirring blade, a stirring rod, a driving assembly, a transmission assembly, a transmission mechanism and a shaking assembly, waste gas enters an adsorption cavity, a filter screen preliminarily filters impurity particles and the like in the waste gas, and the driving assembly drives the shaking assembly, the transmission assembly and the transmission mechanism to operate; a shaking assembly drives a filter screen on one side of a sliding block to shake in a reciprocating mode, so that the filtering efficiency is guaranteed, a transmission assembly rotates to drive a stirring rod to stir activated carbon, the activated carbon makes more sufficient contact with waste gas, a transmission mechanism drives stirring blades and fan blades to rotate, and the stirring blades rotate so that treatment liquid in a purification cavity can be stirred; through the arrangement of the fan blades, the contact reaction between the treating fluid and the gas is more sufficient, so that the treating fluid absorbs harmful gas more completely, the fan blades rotate to accelerate upward flowing of the purified gas, and the efficiency of finally exhausting the gas from the exhaust port is accelerated.

The application provides a gas concentration detection method and device, terminal equipment and medium, comprising: obtaining an original spectrum absorption signal of a to-be-detected gas; performing filtering and smoothing processing on the original spectrum absorption signal, and extracting an upper envelope line of the processed signal; identifying a gas non-absorption wave band in the upper envelope line, calculating a reference amplitude value according to the maximum value and the minimum value of the envelope line in the gas non-absorption wave band; constructing a baseline according to the reference amplitude value, and determining a target gas absorption segment on the upper envelope line by using the baseline; taking the length of the target gas absorption segment as a concentration inversion characteristic value representing the gas absorption intensity, and detecting the gas concentration of the to-be-detected gas based on a pre-constructed concentration inversion model and the concentration inversion characteristic value. The application can improve the accuracy of gas concentration measurement.

The utility model discloses a portable multi-channel gas absorbing and sampling system which comprises a sampler and a plurality of sampling pipes, the sampling pipe comprises a bottle body and a bottle cap matched with the bottle body, the bottle cap is communicated with an air inlet pipe and an air outlet pipe, and an aeration head is arranged at the bottom end of the air inlet pipe; the sampler comprises a sampling pipe bracket, a multi-channel flow pump and a plurality of flowmeters; a sample collection inlet, a waste gas outlet, a gas inlet group and a gas outlet group are arranged on the sampling pipe bracket; the sample collection inlet, the gas inlet group, the sampling pipe, the gas outlet group, the flow meter, the multi-channel flow pump and the waste gas outlet are connected through hoses to form a plurality of gas absorption channels. The portable multi-channel gas absorbing and sampling system disclosed by the utility model is small in size, simple and compact in overall design, simple and convenient to connect all parts, and free from complicated mounting and debugging processes; the multi-channel design can be used for sampling various gases at the same time, so that the sampling efficiency is greatly improved.