CN115753253A - Detection system and method for determining gas components - Google Patents
Detection system and method for determining gas components Download PDFInfo
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- CN115753253A CN115753253A CN202211453556.7A CN202211453556A CN115753253A CN 115753253 A CN115753253 A CN 115753253A CN 202211453556 A CN202211453556 A CN 202211453556A CN 115753253 A CN115753253 A CN 115753253A
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Abstract
The application discloses a detection system and a method for determining a gas component. The detection system comprises: the sampling device comprises a flow guide piece, a first accommodating device and an interceptor conveying assembly which are mutually communicated, a medium to be detected flows into the first accommodating device through the flow guide piece and is conveyed for buffering and detention, the medium to be detected after being buffered by the first accommodating device is introduced into the interceptor to intercept a component to be detected, and then a primary filtering medium is discharged; a first detection device and a second detection device. The medium to be detected is retained in the first accommodating device in a buffering manner, and in the process of filling the first accommodating device, blockage can be reduced and the medium to be detected can be shunted; after the first accommodating device is filled with the medium to be detected, the flow rate of the medium to be detected can be controlled by the medium to be detected through the interceptor conveying assembly, and partial components of the medium to be detected can be intercepted, so that the accuracy of a detection result is improved.
Description
Technical Field
The application belongs to the technical field of gas component detection, and particularly relates to a detection system and method for detecting gas components.
Background
Raw gas (Waste gas) refers to dust-containing gas. The raw gas can not be directly supplied to users and must be subjected to dust removal treatment. The furnace dust in the raw gas can block pipelines in the conveying process, and alkaline substances in the furnace dust can be fused (slagged) with acid refractory materials under the high-temperature condition during combustion, so that the service performance and the service life of equipment such as a coke oven combustion chamber, a hot blast stove regenerative chamber and the like are reduced. The detection of the component content in the raw gas is very important.
In the prior art, a filter membrane or a filter cartridge is usually used for filtering gas such as raw coke oven gas to sample and detect, and the accuracy of a detection result is affected because the filter membrane in the device is blocked or damaged or the distribution condition of each component in the sampled gas is not considered.
Disclosure of Invention
The embodiment of the application provides a detection system and a method for determining components of fuel gas, and aims to provide a detection system and a method for measuring the content of impurity components in the fuel gas more accurately.
In a first aspect, an embodiment of the present application provides a detection system for determining a gas component, including:
the sampling device comprises a flow guide piece, a first accommodating device and an interceptor conveying assembly which are mutually communicated, a medium to be detected flows into the first accommodating device through the flow guide piece to be buffered and retained, and the medium to be detected after being buffered by the first accommodating device is introduced into the interceptor conveying assembly to intercept the component to be detected, and then primary filter medium is discharged;
the first detection device is connected and communicated with the sampling device and is used for determining the total volume of the medium to be detected in the sampling device; and
and the second detection device is used for determining the content of the liquid-phase component in the medium to be detected which is buffered and retained in the first accommodating device.
According to an embodiment of the first aspect of the present application, the flow guide comprises a gas introduction member, which extends into the first receiving means.
According to an embodiment of the first aspect of the present application, the flow guide further includes a first air distribution piece, the first air distribution piece is disposed at the outlet of the first accommodating device of the air introduction piece, and the first air distribution piece is used for conveying the medium to be detected.
According to an embodiment of the first aspect of the present application, the first air distribution member is a first air flow plate, and the first air flow plate is distributed with a plurality of first through holes.
According to an embodiment of the first aspect of the present application, the trap delivery assembly includes a second containing device and a filler filled in the second containing device, the filler having a void formed therein for trapping the component to be detected.
According to an embodiment of the first aspect of the present application, a second airflow distribution piece is arranged at the joint of the first accommodating device and the interceptor conveying assembly;
optionally, the second airflow distribution piece is a second airflow plate, and a plurality of second through holes are distributed on the second airflow plate.
According to an embodiment of the first aspect of the present application, the detection system further includes a cooling component disposed at the periphery of the first accommodating device and the interceptor conveying component, for cooling and intercepting the component to be detected in the first accommodating device and the interceptor conveying component.
According to an embodiment of the first aspect of the application, the cooling assembly comprises a first cooling element and a second cooling element,
the first cooling piece is arranged on the periphery of the first accommodating device and is used for cooling and liquefying part of components of the medium to be detected in the first accommodating device;
the second cooling piece is arranged at the periphery of the interceptor conveying component and is used for cooling and intercepting part of components of the medium to be detected in the interceptor conveying component.
According to an embodiment of the first aspect of the present application, the first cooling member is a cooling bath, the cooling bath contains cooling liquid, and the first containing device is placed in the cooling liquid;
optionally, the target cooling temperature of the first cooling element is less than or equal to 20 ℃, optionally less than or equal to 0 ℃.
According to an embodiment of the first aspect of the present application, the second cooling element is a refrigeration jacket;
optionally, the target cooling temperature of the second cooling element is ≦ -20 deg.C.
In a second aspect, the present embodiments provide a detection method for determining a gas component by using the detection system of the first aspect, including:
buffering and retaining the medium to be detected so as to reduce the circulation speed of the medium to be detected;
intercepting at least part of components in the medium to be detected to obtain a primary filter medium;
acquiring the total volume of the medium to be detected from the air inlet or the air outlet of the medium to be detected;
obtaining the mass of the intercepted components from the buffering detention position and the interception position;
and obtaining the content of each component in the medium to be detected according to the total volume and the mass of the intercepted component of the medium to be detected.
According to an embodiment of the second aspect of the present application, the method specifically comprises:
under the condition of first cooling, enabling the medium to be detected to be buffered and retained so as to reduce the circulation speed of the medium to be detected and liquefy at least part of components in the medium to be detected;
under the second cooling condition, at least partial components in the medium to be detected are intercepted, so as to obtain a primary filter medium;
acquiring the total volume of the medium to be detected from the air inlet or the air outlet of the medium to be detected;
respectively acquiring the mass of the liquefied component and the mass of the trapped dust from the buffering and retaining part and the trapping part;
and calculating to obtain the content of each component in the medium to be detected according to the total volume of the medium to be detected, the mass of the liquefied component and the mass of the trapped dust.
The detection system provided by the embodiment of the application comprises a sampling device, a gas volume detection device and a concentration detection device, and the determination of the components of the medium to be detected can be realized by determining the content of moisture and/or dust in the liquid mixture in the sampling device. In addition, the first accommodating device and the interceptor conveying assembly can enable the medium to be detected with high flow speed and high temperature to be buffered and retained in the first accommodating device, and can reduce blockage and realize the shunting of the medium to be detected in the process of filling the first accommodating device; after the first accommodating device is filled with the medium to be detected, the flow rate of the medium to be detected can be controlled by the medium to be detected through the interceptor conveying assembly, and partial components of the medium to be detected can be intercepted, so that the accuracy of a detection result is further improved; due to the combined action of the first accommodating device and the interceptor conveying component, the flow speed and the retention component of the medium to be detected are controlled, the medium to be detected can be prevented from being easily blocked, the problems that the filtering membrane or the filtering cylinder is adopted for filtering for sampling in the prior art, the blocking and the damage are easy to cause are solved, and the truth and the reliability of the detection result are further improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a detection system for determining a gas component according to an embodiment of a first aspect of the present application;
FIG. 2 is a schematic structural diagram of a detection system for determining a gas component according to a further embodiment of the first aspect of the present application;
FIG. 3 is a schematic flow chart of a detection method for determining a gas component according to an embodiment of the second aspect of the present application.
Description of the reference numerals:
100. the device comprises a sampling device, 110, a flow guide part, 111, a gas leading-in part, 112, a gas discharging part, 113, a first gas flow distribution part, 120, a first accommodating device, 130, a interceptor conveying component, 131, a filler, 132, a second gas flow distribution part, 200, a first detection device, 300, a second detection device, 400, a cooling component, 410, a first cooling part, 420 and a second cooling part.
Detailed Description
Features of various aspects and exemplary embodiments of the present application will be described in detail below, and in order to make objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of, and not restrictive on, the present application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.
In the description of the present application, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicate an orientation or positional relationship that is merely for convenience in describing the application and to simplify the description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The directional terms appearing in the following description are directions shown in the drawings and do not limit the specific structure of the embodiments of the present application. In the description of the present application, it should also be noted that, unless expressly stated or limited otherwise, the terms "mounted" and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected. The specific meaning of the above terms in the present application can be understood as appropriate by one of ordinary skill in the art.
Due to factors of over-high gas flow speed, over-high pressure, over-high oil dust content and the like, in the sampling process
Detecting the tar content in the coke oven gas, and generally, collecting a sample and then detecting the content according to a gravimetric method; however, there is no corresponding national standard for determining the tar content in coal gas.
In the related technology, the method for measuring the tar and dust content in the urban gas GB12208-1990 adopts a gravimetric method to measure the tar content in the urban gas, and because the sampling has large error, the tar content contains dust content or other factors, the measurement result has large error, and an accurate result cannot be obtained.
In the related art, the gas component detection method comprises the following steps: connecting a sampling device with a gas main pipe, wherein the sampling device is a dry weighing and metering filter cylinder type sampling device, and tar and water are attached to the sampling device after the gas passes through the sampling device; after the sampling device is connected with the wet gas flowmeter for sampling, the filter cylinder type sampling device is taken down, and the components of the filter cylinder type sampling device are directly measured. According to the sampling method, when the tar and dust content of the filter membrane in the filter cylinder is high in the sampling process, the filter membrane is easy to block, and the measurement result is influenced; in the moisture measurement process, moisture loss is likely to occur due to gas heating, resulting in variation in measurement results.
Based on this, through the research of the inventor, provide a more accurate sampling device and be used for gas detecting system, and can improve the survey rate of accuracy to moisture.
For a better understanding of the present application, a detection system for determining a gas component according to an embodiment of the present application will be described in detail below with reference to fig. 1 to 3.
Referring to fig. 1, fig. 1 illustrates a detection system for determining a gas component according to a first aspect of an embodiment of the present application, including:
the sampling device 100 comprises a flow guide piece 110, a first accommodating device 120 and an interceptor conveying component 130 which are mutually communicated, a medium to be detected flows into the first accommodating device 120 through the flow guide piece 110 for buffering and detention, and the medium to be detected after buffering through the first accommodating device 120 is introduced into the interceptor conveying component 130 for intercepting a component to be detected, and then primary filtering medium is discharged;
the first detection device 200 is connected and communicated with the sampling device 100 and used for determining the total volume of the medium to be detected in the sampling device 100; and
the second detecting unit 300 is configured to determine the content of the liquid-phase component in the medium to be detected that is buffered and retained in the first accommodating unit 110.
According to the embodiment of the application, the medium to be detected can be fuel gas; specifically, the medium to be detected can be raw gas, natural gas containing impurities, methane containing impurities and the like. The first receiving device 120 includes a receiving cavity, which can be used to receive a medium to be detected or a liquefied component of the medium to be detected. Through the detection system shown in fig. 1, the contents of liquefied moisture, tar and dust in the fuel gas can be detected, and by adopting the sampling device 100 comprising the first accommodating device 120 and the interceptor conveying assembly 130, the inaccuracy of detection results caused by the fact that a filter, a filter membrane and the like are simply used in the related art and are easily damaged is avoided. The detection system has large sampling amount and no blockage phenomenon, so that the sampling is more representative and the measurement result is more accurate. According to the embodiment of the present application, the first detecting device 200 is implemented as a wet gas flowmeter, and may be disposed at an input end, or a discharge end, of the flow guide 110. The second testing device 300 can be a moisture content tester and a dust content tester, respectively, the moisture content tester can test according to the moisture content testing method of GB/T260 petroleum products, the tester used in the method is from the 916 Carfei moisture tester of Wantong Chinese Limited, switzerland, the dust content tester can test according to the GB/T511 petroleum and petroleum products and additives mechanical impurities, and the tester used in the method is from the ST-1550 mechanical impurities analyzer of Beijing Xuxin Instrument Equipment Limited. The moisture content detector and the dust content detector are arranged in the liquid phase mixture, so that the moisture content and the dust content can be detected respectively, and the moisture quality and the dust quality in the medium to be detected can be obtained through calculation.
Referring to fig. 2, fig. 2 shows a detection system for determining a gas component according to another embodiment of the present application.
As shown in fig. 2, one side of the diversion element 110 of the sampling device 100 is communicated with the gas transmission pipeline, so that the gas in the transmission pipeline is transmitted to the sampling device. In some embodiments, the gas in the gas delivery pipe may be at a temperature of 30-80 deg.C, at a higher temperature,
in some embodiments, the flow guide 110 includes a gas introduction part 111, and the gas introduction part 111 protrudes into the first accommodation device 120. The gas can be avoided leaking in the aforesaid setting, can also improve the measuring accuracy to gas total volume in the sampling device.
In some embodiments, the gas introduction member 111 includes a gas conduit, and may optionally include a hose and a pipe having a certain hardness.
In some embodiments, the baffle 110 further comprises a flow regulating valve. Can be arranged on the gas conduit, and the medium to be detected flows in from the gas conduit and then flows out. The opening degree of the flow regulating valve is adjusted or opened and closed according to the state of the medium to be detected or accommodated in the first accommodating device, or the opening degree of the flow regulating valve is adjusted according to the flow velocity of the air flow at the discharge end.
In some embodiments, the detection system further includes a gas exhaust 112 coupled to the trap assembly 130 for exhausting the primary filter media. In some embodiments, the first detecting device may be connected to the gas discharging member 112 for detecting the total volume of the filtered medium to be detected, so as to prevent the medium to be detected from being contaminated more than necessary, and to prevent the first detecting device from being damaged or worn.
In some embodiments, the detection system may further include a thermometer and a U-gauge, each in communication with the gas outlet 112, for detecting the temperature and pressure of the primary filter medium, respectively.
In some embodiments, the flow guide 110 further comprises a first air distribution member 113, the first air distribution member 113 is disposed at the outlet of the first accommodating apparatus 120 of the air inlet 111, and the first air distribution member 113 is used for conveying the medium to be detected.
According to the embodiment of the present application, the first airflow distribution member 113 can make the medium to be detected reach the first container 120 more dispersed and more uniformly, and can avoid splashing of liquid droplets when the first container 120 retains a liquid-phase component.
In some embodiments, the first air distribution member 113 is a first air flow plate, and a plurality of first through holes are distributed on the first air flow plate.
In some embodiments, the interceptor delivering assembly 130 comprises a second container and a filler 131 filled in the second container, and the filler 131 has a hole formed therein for intercepting the component to be detected.
According to the embodiment of the application, the filler can be composed of stainless steel wire mesh filler, stainless steel wire filler and the like. The pores in the filler 131 can facilitate the medium to be detected to pass through and can also enable dust in the medium to be detected to be retained; through the hole in filler 131, the contact area of the medium to be detected and the filler is increased, so that dust can be trapped more completely.
In some embodiments, the first container 120 and the second container may be a metal material such as stainless steel, which facilitates heat transfer and corrosion resistance.
In some embodiments, the first containment device 120 is provided with a second airflow distribution member 132 at the junction with the trap transport assembly 130
Optionally, the second airflow distribution member 132 is a second airflow plate, and the second airflow plate is distributed with a plurality of second through holes. The second airflow distribution member 132 described above can make the medium to be detected reach the second containing device more dispersed and more uniform, and can also support the packing.
In some embodiments, the detection system further comprises a cooling assembly 400 disposed at the periphery of the first container 120 and the trap conveyor assembly 130 for cooling and trapping the component to be detected in the first container 130 and the trap conveyor assembly 130. The above-described cooling assembly may increase the capacity of the first container 120 and may also increase the trapping effect in the trap transporting assembly 130.
In some embodiments, the cooling assembly 400 includes a first cooling member 410 and a second cooling member 420,
wherein the first cooling member 410 is disposed at the periphery of the first containing device 120, and is used for cooling and liquefying part of components of the medium to be detected in the first containing device 120;
the second cooling member 420 is provided at the periphery of the interceptor conveyer assembly 120 for cooling and intercepting a part of components of the medium to be detected in the interceptor conveyer assembly 120.
In some embodiments, the first cooling element 410 is a cooling bath containing a cooling liquid therein, and the first container 120 is placed in the cooling liquid;
optionally, the target cooling temperature of the first cooling element is less than or equal to 20 ℃, optionally less than or equal to 0 ℃.
In the embodiment of the application, the possible flow rate of the medium to be detected entering the first accommodating device is higher, the pressure is higher, and the oil dust content is higher; in order to further improve the accommodating effect, the medium to be detected accommodated in the first accommodating device is cooled by using a cooling liquid with a lower temperature, and the pressure and the flow rate of the medium to be detected can be adjusted. In addition, at a relatively low temperature, the water vapor and tar in the medium to be detected are cooled, and the liquid phase is accommodated in the first accommodating device. In order to better liquefy the water vapor and tar in the medium to be detected, the target cooling temperature is less than or equal to 20 ℃, and is optionally less than or equal to 0 ℃.
In some embodiments, the second cooling member 420 is a refrigeration jacket;
optionally, the target cooling temperature of the second cooling member is ≦ -20 deg.C.
In this application embodiment, refrigeration jacket surface can set up the screw cap, convenient to detach. The possible flow rate of the medium to be detected from the first containing means is also fast, at a high pressure and at a high temperature (insufficient to liquefy the light hydrocarbon components); in order to further accurately measure the dust content in the medium to be detected, the medium to be detected is cooled by a refrigeration jacket with lower temperature, and the pressure of the medium to be detected can be adjustedAnd a flow rate. In addition, at lower temperatures, light hydrocarbon components in the medium to be detected liquefy, and dust is also retained in the trap conveyor assembly. In order to better liquidize the light hydrocarbon component in the medium to be detected, the target cooling temperature is less than or equal to minus 20 ℃. When the medium to be detected is raw gas, the light hydrocarbon component contains C 8 Saturated hydrocarbons, C 8 Olefin, C 8 The following aromatic hydrocarbons and the like.
Referring to fig. 3 in combination, fig. 3 shows a schematic flow chart of a detection method for determining a gas component according to an embodiment of the second aspect of the present application.
As shown in fig. 2 and 3, the embodiment of the second aspect of the present application further provides a detection method for determining a component of a fuel gas, in which the detection system of any one of the embodiments of the first aspect is adopted, the method includes:
s100, enabling the medium to be detected to be buffered and retained so as to reduce the circulation speed of the medium to be detected;
s200, intercepting at least part of components in a medium to be detected to obtain a primary filter medium;
s300, acquiring the total volume of the medium to be detected from the air inlet or the air outlet of the medium to be detected;
s400, acquiring the mass of the intercepted component from the buffering detention position and the interception position;
s500, obtaining the content of each component in the medium to be detected according to the total volume and the mass of the trapped component of the medium to be detected.
According to the embodiment of the application, the medium to be detected is enabled to be buffered and retained, at least part of components in the medium to be detected are intercepted, the circulation speed of the medium to be detected is reduced, the intercepted components can be detected, and the detection of the components of the medium to be detected is realized. The method avoids the inaccuracy of the detection result caused by the easy damage of a filter, a filter membrane and the like directly used in the related technology.
In some embodiments, the method specifically comprises:
under the condition of first cooling, the medium to be detected is subjected to buffering and detention so as to reduce the circulation speed of the medium to be detected and liquefy at least part of components in the medium to be detected;
under the second cooling condition, at least partial components in the medium to be detected are intercepted, so as to obtain a primary filter medium;
acquiring the total volume of the medium to be detected from the air inlet or the air outlet of the medium to be detected;
the mass of the liquefied component and the mass of the trapped dust are respectively obtained at the buffering and trapping part;
and calculating to obtain the content of each component in the medium to be detected according to the total volume of the medium to be detected, the mass of the liquefied component and the mass of the trapped dust.
According to the embodiment of the present application, the first cooling and the second cooling may be the same target cooling temperature or different target cooling temperatures; from the point of view of the present objective of saving energy consumption, the temperature of the first cooling is greater than the temperature of the second cooling. The second cooling temperature is used for further liquefying tar and steam, and can also liquefy part of light hydrocarbon components, thereby realizing accurate measurement of each component.
According to the embodiment of the application, the temperature for condensing the moisture and the tar in the raw coke oven gas can be realized under the first cooling condition, and the raw coke oven gas can be cooled to obtain the liquid mixture of the moisture and the tar. The second cooling condition may be at a temperature that condenses light hydrocarbon components of the raw gas.
In some embodiments, S400 specifically includes:
dissolving the components at the retentate in a solvent to obtain a first mixture;
mixing the liquid phase component of the buffer retentate with the first mixture to obtain a second mixture;
the volume of the second mixture, the moisture content in the second mixture, and the dust content in the second mixture are detected to obtain the water quality and the dust quality.
According to the embodiment of the application, the components trapped in the filler, including dust and part of tar, can be washed by using the solvent, all the components can be fully redundant in the solvent, the uniformity degree of the components in the solvent is improved, and the measurement result is more accurate.
According to the embodiments of the present application, the moisture, tar and dust content of gas, such as raw gas, can be determined based on gravimetric methods, oil and oil products and additive mechanical impurity determination, karl fischer moisture determination.
In some embodiments, the solvent may be toluene, methanol, or a combination thereof. The use of solvents does not add new moisture content and other impurity components. The sampling device and associated flow guides, such as the connecting tubing, can be flushed a small number of times before all of the solution is collected. After the interceptor conveying assembly is washed, the interceptor conveying assembly can be dried on heating equipment and then returned to the detection system.
Illustratively, using the detection system shown in FIG. 2, the initial state of the first container is weighed by a weighing device such as an electronic scale, denoted as M1. And sampling the raw gas, and recording the volume as V. After sampling, the mass of the first containing device is M2, the trap transport assembly is washed with the solvent, the washed solvent is placed in the first containing device, mixed with the liquid phase component in the first containing device, and the first containing device at this time is weighed to be M3. Measuring the moisture content W by using a moisture content measuring apparatus Water (W) Obtaining the water mass M4, M4= (M3-M1) × W Water (I) And the water content in the raw gas is M4/V. Measuring the moisture content W by using a dust content measuring device Dust (I) and (II) Obtaining the dust mass M5, M5= (M3-M1) × W Dust (I) and (II) The dust content in the raw gas is M5/V. The mass of tar is M6, M6= (M2-M1-M4-M5), and the tar content in the raw gas is M6/V.
It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed at the same time.
As described above, only the specific embodiments of the present application are provided, and it can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered within the scope of the present application.
Claims (12)
1. A detection system for determining a composition of a gas, comprising:
the sampling device comprises a flow guide piece, a first accommodating device and an interceptor conveying assembly which are mutually communicated, a medium to be detected flows into the first accommodating device through the flow guide piece to be buffered and retained, and the medium to be detected after being buffered by the first accommodating device is introduced into the interceptor conveying assembly to intercept the component to be detected, and then primary filtering medium is discharged;
the first detection device is connected and communicated with the sampling device and used for determining the total volume of the medium to be detected in the sampling device; and
and the second detection device is used for determining the content of the liquid-phase component in the medium to be detected which is buffered and retained in the first accommodating device.
2. A testing system according to claim 1 wherein said flow guide comprises a gas introduction member which extends into said first receiving means.
3. A detection system according to claim 2, wherein the flow guide further comprises a first air flow distribution member, the first air flow distribution member is arranged at the outlet of the first accommodating device of the air introduction member, and the first air flow distribution member is used for conveying the medium to be detected.
4. The detection system according to claim 3, wherein the first air distribution member is a first air flow plate having a plurality of first through holes distributed therein.
5. The detection system according to claim 1, wherein the trap delivery assembly includes a second containing device and a packing filled in the second containing device, the packing having a void formed therein for trapping the component to be detected.
6. The detection system according to claim 5, wherein a second airflow distribution member is provided at the junction of the first containing device and the interceptor conveying assembly;
preferably, the second airflow distribution piece is a second airflow plate, and a plurality of second through holes are distributed on the second airflow plate.
7. The detection system according to any one of claims 1 to 6, further comprising a cooling assembly disposed around the first containment device and the trap delivery assembly for cooling and trapping the component to be detected in the first containment device and the trap delivery assembly.
8. The detection system of claim 7, wherein the cooling assembly includes a first cooling member and a second cooling member,
the first cooling piece is arranged on the periphery of the first accommodating device and is used for cooling and liquefying part of components of the medium to be detected in the first accommodating device;
the second cooling piece is arranged on the periphery of the interceptor conveying assembly and is used for cooling and intercepting part of components of the medium to be detected in the interceptor conveying assembly.
9. The detection system according to claim 8, wherein the first cooling member is a cooling bath containing a cooling liquid therein, and the first containing device is placed in the cooling liquid;
preferably, the target cooling temperature of the first cooling element is less than or equal to 20 ℃, preferably less than or equal to 0 ℃.
10. The detection system according to claim 8, wherein the second cooling member is a refrigeration jacket;
preferably, the target cooling temperature of the second cooling element is ≦ -20 ℃.
11. An inspection system according to any one of claims 1 to 10, for use in an inspection method for determining the composition of a combustible gas, comprising:
buffering and retaining a medium to be detected so as to reduce the circulation speed of the medium to be detected;
intercepting at least part of components in the medium to be detected to obtain a primary filter medium;
acquiring the total volume of the medium to be detected from the air inlet or the air outlet of the medium to be detected;
obtaining the mass of the retained component from the buffer hold-up and the retention;
and obtaining the content of each component in the medium to be detected according to the total volume of the medium to be detected and the mass of the intercepted component.
12. The detection method according to claim 11, characterized in that the method specifically comprises:
under the condition of first cooling, enabling the medium to be detected to be buffered and detained so as to reduce the circulation speed of the medium to be detected and liquefy at least part of components in the medium to be detected;
under the second cooling condition, at least partial components in the medium to be detected are intercepted, so as to obtain a primary filter medium;
acquiring the total volume of the medium to be detected from the air inlet or the air outlet of the medium to be detected;
respectively acquiring the mass of the liquefied component and the mass of the trapped dust from the buffering and retaining part and the trapping part;
and calculating to obtain the content of each component in the medium to be detected according to the total volume of the medium to be detected, the mass of the liquefied component and the mass of the trapped dust.
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| CN202211453556.7A CN115753253A (en) | 2022-11-21 | 2022-11-21 | Detection system and method for determining gas components |
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| CN202211453556.7A CN115753253A (en) | 2022-11-21 | 2022-11-21 | Detection system and method for determining gas components |
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| CN202211453556.7A Pending CN115753253A (en) | 2022-11-21 | 2022-11-21 | Detection system and method for determining gas components |
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