Air bag sample injection pretreatment device and air bag sample injection collection system

Abstract

The utility model relates to an air bag sample introduction pretreatment device and an air bag sample introduction collection system.The air bag sample introduction pretreatment device comprises an equipment shell, a plurality of constant-temperature sampling cavities are formed in the equipment shell, and a lifting door is arranged outside each constant-temperature sampling cavity; a detection element used for detecting temperature and humidity and a butt joint induction interface used for being connected with a sampling air bag are arranged in each constant-temperature sampling chamber, the butt joint induction interface is connected with a multi-way valve, and the multi-way valve is mounted on a mounting plate of the equipment shell. According to the gas bag sample introduction pretreatment device, the plurality of constant-temperature sampling chambers, the butt joint sensing interfaces and the multi-way valves are matched with one another, so that sampling of one sampling gas bag and one sampling gas bag can be realized, the labor cost can be greatly reduced, the possibility of personal errors is also reduced, and the stability and the accuracy of sampling results are improved; independent temperature control is carried out on each constant-temperature sampling chamber through the detection element, the temperature of the sampling air bag in the constant-temperature sampling chamber is determined, and constant-temperature sampling is realized.

Description

Technical Field

[0001] This application relates to the field of gas sampling technology, and in particular to a gas bag pretreatment device and a gas bag sampling and acquisition system. Background Technology

[0002] With the rapid development of environmental science, chemical analysis, and biomedicine, the demand for gas bag sampling is showing a continuous upward trend. These industries require the collection of large quantities of gas samples for subsequent analysis, research, and monitoring. Traditional gas bag sampling methods mainly rely on manual operation, which is not only inefficient but also prone to errors, making it difficult to guarantee the continuity and accuracy of sampling. In contrast, automated gas bag sampling equipment has significant advantages. It can achieve continuous and precise sampling, greatly improving efficiency and quality, and saving a significant amount of time and labor costs.

[0003] The emergence of automated gas bag sampling equipment can significantly improve data collection efficiency and reduce the tediousness and errors of manual operation, thereby meeting the industry's demand for efficient and accurate data collection. However, current automated gas bag sampling equipment on the market is generally bulky and lacks portability. Because the gas bags on the market are all externally connected, the interaction between third-party devices and automated gas bag sampling equipment is unsatisfactory, which not only reduces work efficiency but also increases the risk of operational errors. Furthermore, since the gas bags on the market are all externally connected, they are completely exposed to the air and cannot be temperature-controlled for sampling, thus greatly reducing the accuracy of the data.

[0004] Therefore, in order to alleviate the pressure on sampling personnel and minimize human error, there is an urgent need for a safe, effective, convenient and simple pretreatment system for gas bag injection. Utility Model Content

[0005] This application provides a gas bag pretreatment device and a gas bag sampling system to solve the technical problems of existing automatic gas bag sampling equipment being too large and unable to achieve constant temperature sampling due to its external connection with the sampling bag.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] In a first aspect, a pretreatment device for gas bag sampling is provided, comprising: a device housing, wherein the device housing has a plurality of constant temperature sampling chambers, each of the constant temperature sampling chambers is provided with a lifting door, each of the constant temperature sampling chambers is provided with a detection element for detecting temperature and humidity and a docking sensing interface for connecting with the sampling gas bag, the docking sensing interface is connected to a multi-way valve, and the multi-way valve is mounted on a mounting plate of the device housing.

[0008] Preferably, each of the constant temperature sampling chambers is also provided with an air outlet.

[0009] Preferably, a connection port is provided on the back of the device housing, and the connection port is used to connect two adjacent device housings by means of a connector.

[0010] Preferably, a connecting plate is provided on the back of the device housing, and the connecting plate is provided with a power switch, a first connecting interface, a second connecting interface and a communication interface, wherein the first connecting interface and the second connecting interface are both connected to the multi-way valve.

[0011] Preferably, an adjustment element for adjusting the flow rate is provided between the docking induction interface and the multi-way valve, and the adjustment element is mounted on the mounting plate.

[0012] Preferably, the multi-way valve is provided with a heating element for heating the channel in the multi-way valve.

[0013] Preferably, a motherboard is mounted on the mounting plate.

[0014] Preferably, the device housing is equipped with a power supply, a hot air blower, and a temperature control module.

[0015] Preferably, an indicator light for displaying the working status of the sampling gas bag is installed on the device housing located below each of the constant temperature sampling chambers.

[0016] Secondly, a gas bag injection and acquisition system is provided, including a gas chromatograph and multiple gas bag injection pretreatment devices connected in series as described above. The first connection interface of the first gas bag injection pretreatment device is connected to the gas output port of the gas chromatograph, and the communication interface of the first gas bag injection pretreatment device is connected to the communication interface of the gas chromatograph. The first connection interface and communication interface of two adjacent gas bag injection pretreatment devices are interconnected.

[0017] The gas bag pretreatment device includes a housing with several constant temperature sampling chambers. Each constant temperature sampling chamber is equipped with a lifting door. Each constant temperature sampling chamber is equipped with a detection element for detecting temperature and humidity and a docking induction interface for connecting with the sampling gas bag. The docking induction interface is connected to a multi-way valve, which is mounted on the mounting plate of the housing.

[0018] As can be seen from the above technical solutions, this application has the following advantages: The gas bag pretreatment device can achieve sampling of one gas bag after another through the cooperation of multiple constant temperature sampling chambers, docking induction interfaces and multi-way valves, which can significantly reduce labor costs, reduce the possibility of human error, and improve the stability and accuracy of sampling results; the detection element enables independent temperature control of each constant temperature sampling chamber, determines the temperature of the sampling gas bag in the constant temperature sampling chamber, and achieves constant temperature sampling, which solves the technical problem that the existing automatic gas bag sampling equipment is too large and the connection with the sampling bag is external, which makes constant temperature sampling impossible.

[0019] This gas bag sampling system, through its gas bag pretreatment device, allows small breathalyzers to maintain their portability while automating the injection of sampling gas bags. The system provides multiple sampling gas bag inlets via a multi-port valve in the pretreatment device, enabling continuous sampling. Furthermore, the system can be expanded to connect to multiple pretreatment devices of the same height, increasing the number of sampling gas bag channels and flexibly meeting diverse needs. This allows the system to be customized to different application scenarios and requirements, accommodating large-scale sampling demands. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the pretreatment device for gas bag injection described in the embodiments of this application;

[0022] Figure 2 A schematic diagram of the structure of the air bag sample pretreatment device with the lifting door open, as described in the embodiments of this application;

[0023] Figure 3 This is a schematic diagram of the structure of the gas bag pretreatment device for gas bag injection described in the embodiments of this application for removing the sampling gas bag;

[0024] Figure 4 This is a schematic diagram of the structure of the air bag pretreatment device for sample injection described in this application, showing the removal of the back plate;

[0025] Figure 5 This is a schematic diagram of the structure of multiple air bag pretreatment devices described in the embodiments of this application connected in series;

[0026] Figure 6This is a schematic diagram of the framework of the air bag sampling system described in the embodiments of this application. Detailed Implementation

[0027] To make the inventive objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] In the description of the embodiments of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0030] In the embodiments of this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0031] This application provides a gas bag pretreatment device and a gas bag sampling system to solve the technical problems of existing automatic gas bag sampling equipment being too large and unable to achieve constant temperature sampling due to its external connection with the sampling bag.

[0032] Example 1:

[0033] Figure 1 This is a schematic diagram of the pretreatment device for gas bag injection described in the embodiments of this application; Figure 2This is a schematic diagram of the structure of the gas bag sample pretreatment device described in this application, with the lifting door open. Figure 3 This is a schematic diagram of the structure of the gas bag pretreatment device for gas bag injection described in the embodiments of this application, which removes the sampling gas bag. Figure 4 This is a schematic diagram of the structure of the air bag pretreatment device for sample injection described in this application, showing the removal of the back plate.

[0034] like Figures 1 to 4 As shown, this application embodiment provides a gas bag sampling pretreatment device, including a device housing, a plurality of constant temperature sampling chambers 06 are provided on the device housing, each constant temperature sampling chamber 06 is provided with a lifting door 04, each constant temperature sampling chamber 06 is provided with a detection element 08 for detecting temperature and humidity and a docking sensing interface 09 for connecting with the sampling gas bag 05, the docking sensing interface 09 is connected to a multi-way valve 021, and the multi-way valve 021 is installed on the mounting plate 101 of the device housing.

[0035] It should be noted that, as an example, this embodiment features four constant-temperature sampling chambers 06 on the device housing. These chambers are used to house the sampling gas bags 05, allowing each gas bag 05 to have its own independent constant-temperature chamber for gas sampling. The detection element 08 can be a temperature and humidity sensor, used to monitor the temperature and humidity within the constant-temperature sampling chambers 06. This facilitates control of the temperature and humidity within the gas bag pretreatment device, allowing each chamber 06 to have independent temperature control. This ensures each sampling gas bag 05 has an independently temperature-controlled chamber (37°C, close to human body temperature), improving the consistency of the gas bag pretreatment device and providing reliable samples for subsequent analysis. The multi-port valve 021 can be selected as a six-port rotary valve. The six-port rotary valve is used for switching the sampling gas bag 05, cleaning the connecting pipeline, and connecting other pre-treatment devices for the gas bag in series. The 0 channel of the six-port rotary valve is a common channel for connecting to the gas chromatograph, and the 1-6 channels of the six-port rotary valve are respectively used for connecting to 4 sampling gas bags, nitrogen, and connecting other pre-treatment devices for the gas bag in series.

[0036] In this embodiment, the sampling gas bag 05 is used for gas sample collection. Gas sampling of the sampling gas bags 05 within the multiple constant-temperature sampling chambers 06 of the gas bag pretreatment device is achieved by switching valve groups using a multi-way valve 021, allowing the sampling gas bags 05 to be injected one after another without manual intervention. This significantly reduces labor costs, lowers the idle time of the gas bag pretreatment device, and improves machine utilization. Simultaneously, the automated operation of the gas bag pretreatment device reduces the possibility of human error, improving the stability and accuracy of sampling results. Because the multi-way valve 021 ensures a minimal dead volume in the switching valve body, the pipe joints of the multi-way valve 021 exhibit zero adsorption and zero residue, further enhancing the stability and accuracy of sampling results.

[0037] In this embodiment of the application, the device housing is composed of a main shell 01, a bottom shell 02 and a back plate 023.

[0038] It should be noted that the back panel 023 provides the final encapsulation for the outer casing of the device housing, leaving space for air inlets and interfaces.

[0039] In this embodiment, a viewing window is provided on the lifting door 04, which allows the user to observe the sampling status of the sampling air bag 05 inside the constant temperature sampling chamber 06.

[0040] In this embodiment, the docking sensing interface 09 is provided with a sensing sheet or a sensing sensor that can sense the alignment and connection between the sampling gas bag 05 and the docking sensing interface 09, and can sense the information that gas is being delivered to the sampling gas bag 05.

[0041] This application provides a pretreatment device for gas bag sampling, comprising a housing with several constant-temperature sampling chambers. Each constant-temperature sampling chamber has a lifting door on its exterior. Each constant-temperature sampling chamber contains a detection element for detecting temperature and humidity and a docking induction interface for connecting with the sampling gas bag. The docking induction interface is connected to a multi-way valve, which is mounted on a mounting plate of the housing. This gas bag sampling pretreatment device, through the cooperation of multiple constant-temperature sampling chambers, docking induction interfaces, and multi-way valves, can achieve sampling of gas bags one after another, significantly reducing labor costs, lowering the possibility of human error, and improving the stability and accuracy of sampling results. The detection element enables independent temperature control of each constant-temperature sampling chamber, determining the temperature of the sampling gas bag within the chamber, thus achieving constant-temperature sampling. This solves the technical problems of existing automatic gas bag sampling devices being too bulky and having an external connection to the sampling bag, which prevents constant-temperature sampling.

[0042] It should be noted that the automated sample introduction process of this gas bag pretreatment device reduces direct contact between personnel and harmful gases, lowers occupational health risks, and also reduces safety accidents caused by improper operation.

[0043] like Figure 3 As shown, in one embodiment of this application, each constant temperature sampling chamber 06 is also provided with an air outlet 07.

[0044] It should be noted that air outlet 07 is used as an inlet for hot air.

[0045] Figure 5 This is a schematic diagram showing the structure of multiple air bag pretreatment devices connected in series in the embodiments of this application.

[0046] like Figure 5As shown, in one embodiment of this application, a connection port 102 is provided on the back of the device housing, and the connection port 102 is used to connect two adjacent device housings through the connector 25.

[0047] It should be noted that the connector 25 can be a U-shaped pin. The gas bag pretreatment device is inserted into the connection port 102 of two adjacent device housings through the U-shaped pin, so that multiple gas bag pretreatment devices can be connected in series. The U-shaped pin has the functions of easy insertion and removal and tight fit.

[0048] like Figure 4 and Figure 5 As shown, in one embodiment of this application, a connecting plate 103 is provided on the back of the device housing. The connecting plate 103 is provided with a power switch 017, a first connecting interface 016, a second connecting interface 015 and a communication interface 014. The first connecting interface 016 and the second connecting interface 015 are both connected to the multi-way valve 021.

[0049] It should be noted that the power switch 017 is a three-in-one power switch combining a switch, a three-pronged socket, and a fuse. The first connection interface 016 is the input port for the carrier gas (nitrogen). The second connection interface 015 is the output port for the exhalation sample from the sampling bag 05. The communication interface 014 is the communication interface for connecting this pre-treatment device for the sampling bag to other devices.

[0050] like Figure 4 As shown, in one embodiment of this application, an adjustment element 012 for adjusting the flow rate is provided between the docking induction interface 09 and the multi-way valve 021, and the adjustment element 012 is mounted on the mounting plate 101.

[0051] It should be noted that the regulating element 012 can be selected as a needle valve. The regulating element 012 is used to control the flow rate of the gas (such as nitrogen) entering the sampling gas bag 05.

[0052] like Figure 4 As shown, in one embodiment of this application, a heating element 022 for heating the channel in the multi-way valve 021 is provided on the multi-way valve 021.

[0053] It should be noted that the heating element 022 utilizes the principle of thermal desorption to heat the pipe joint of the six-way rotary valve, effectively reducing residue and cross-contamination at the pipe joint. In this embodiment, the six-way rotary valve has a small dead volume, and heating the passage of the six-way rotary valve by the heating element 022 ensures that there are no residues in the pipeline. The heating element 022 can be selected as a heating element, heating wire, thermistor, conductive coating, or heating film, etc.

[0054] like Figure 4As shown, in one embodiment of this application, a main board 020 is mounted on the mounting plate 101. The main board 020 is used to carry the control circuit of the gas bag pretreatment device.

[0055] like Figure 4 As shown, in one embodiment of this application, a power supply 018, a hot air blower 019, and a temperature regulation module 013 are provided on the device housing.

[0056] It should be noted that power supply 018 is used to provide power to the gas bag sample pretreatment device. Hot air blower 019 provides hot air to air outlet 07, and a temperature sensor is installed on hot air blower 019. In this embodiment, an air inlet 024 is provided on the back of the device housing corresponding to the location of hot air blower 019. Air inlet 024 is the air inlet of hot air blower 019, and a mesh protective cover is provided outside air inlet 024. Temperature regulation module 013 can be an existing temperature control module that provides precise temperature control and automatic adjustment.

[0057] like Figure 1 As shown, in one embodiment of this application, an indicator light 03 for displaying the working status of the sampling gas bag 05 is installed on the device housing located below each constant temperature sampling chamber 06.

[0058] It should be noted that an indicator light 03 not lit indicates that the gas bag pretreatment device is not connected to the gas supply equipment (such as a gas chromatograph). A solid blue indicator light 03 indicates that the gas bag pretreatment device is connected to the gas supply equipment (such as a gas chromatograph), and the sampling gas bag 05 is not connected to the docking sensor interface 09. A green indicator light 03 indicates that the sampling gas bag 05 is connected to the docking sensor interface 09. A flashing green indicator light 03 indicates that gas has entered the sampling gas bag 05. An orange indicator light 03 indicates that sampling by the sampling gas bag 05 has been completed.

[0059] like Figure 4 As shown in this embodiment, a relay 010 and a converter socket 011 are provided on the mounting plate 101.

[0060] Example 2:

[0061] Figure 6 This is a schematic diagram of the framework of the air bag sampling system described in the embodiments of this application.

[0062] like Figure 6As shown, this application provides a gas bag injection and acquisition system, including a gas chromatograph and multiple gas bag injection pretreatment devices connected in series. The first connection interface of the first gas bag injection pretreatment device is connected to the gas output port of the gas chromatograph, and the communication interface of the first gas bag injection pretreatment device is connected to the communication interface of the gas chromatograph. The first connection interface and communication interface of two adjacent gas bag injection pretreatment devices are interconnected.

[0063] It should be noted that the details of the gas bag pretreatment device have already been described in Embodiment 1, and will not be repeated in this embodiment. The multi-port valve of the first gas bag pretreatment device is connected to the gas chromatograph via a heating pipe. Adjacent gas bag pretreatment devices are connected to their corresponding multi-port valves via heating pipes. In this embodiment, the gas bag sampling system communicates with the host computer of the μGC (gas chromatograph), enabling automated continuous sampling of multiple sampling gas bags. Using a series connection allows for the stacking of multiple gas bag pretreatment devices, increasing the number of samples automatically injected per cycle. The gas chromatograph is used to collect and detect volatile organic molecules in exhaled breath.

[0064] like Figure 6 As shown in the embodiment of this application, the gas bag sampling system realizes automated continuous sampling of the sampling gas bag by connecting and stacking multiple gas bag pre-sampling devices in series, and realizes the constant temperature function (constant temperature 37°C) of the sampling gas bag by stacking multiple gas bag pre-sampling devices; it can support four sampling channels (AB1~AB4) through a multi-port valve; and it realizes self-cleaning of the channels through heating elements to prevent cross-contamination, such as nitrogen circuit cleaning.

[0065] It should be noted that this gas bag sampling system, through its gas bag pretreatment device, allows small breathalyzers to maintain their portability while automating the injection of sampling gas bags. The system provides multiple sampling gas bag inlets via a multi-port valve in the pretreatment device, enabling continuous sampling. This system can be expanded to connect to multiple pretreatment devices of the same height, increasing the number of sampling gas bag channels and flexibly meeting different needs. This allows the system to be customized for various application scenarios and requirements, satisfying the demands of large-scale sampling.

[0066] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A pretreatment device for gas bag injection, characterized in that, include: The device housing has several constant temperature sampling chambers, each of which is equipped with a lifting door. Each constant temperature sampling chamber is equipped with a detection element for detecting temperature and humidity and a docking sensing interface for connecting with a sampling air bag. The docking sensing interface is connected to a multi-way valve, which is mounted on a mounting plate of the device housing.

2. The gas bag sample pretreatment device according to claim 1, characterized in that, Each of the aforementioned constant temperature sampling chambers is also equipped with an air outlet.

3. The gas bag sample pretreatment device according to claim 1, characterized in that, The back of the device housing is provided with a connection port, which is used to connect two adjacent device housings through a connector.

4. The gas bag pretreatment device according to claim 1, characterized in that, A connecting plate is provided on the back of the device housing. The connecting plate is provided with a power switch, a first connecting interface, a second connecting interface and a communication interface. The first connecting interface and the second connecting interface are both connected to the multi-way valve.

5. The gas bag pretreatment device according to claim 1, characterized in that, An adjustment element for regulating flow is provided between the docking induction interface and the multi-way valve, and the adjustment element is mounted on the mounting plate.

6. The gas bag sample pretreatment device according to claim 1, characterized in that, The multi-way valve is equipped with a heating element for heating the channel in the multi-way valve.

7. The gas bag sample pretreatment device according to any one of claims 1-6, characterized in that, The motherboard is mounted on the mounting plate.

8. The gas bag sample pretreatment device according to any one of claims 1-6, characterized in that, The device housing is equipped with a power supply, a hot air blower, and a temperature control module.

9. The gas bag sample pretreatment device according to any one of claims 1-6, characterized in that, An indicator light for displaying the working status of the sampling gas bag is installed on the device housing located below each of the constant temperature sampling chambers.

10. A gas bag sampling system, characterized in that, The device includes a gas chromatograph and multiple gas bag pretreatment devices as described in any one of claims 1-9, connected in series. The first connection interface of the first gas bag pretreatment device is connected to the gas output port of the gas chromatograph, and the communication interface of the first gas bag pretreatment device is connected to the communication interface of the gas chromatograph. The first connection interface and communication interface of two adjacent gas bag pretreatment devices are interconnected.

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