Authentication detection device for multi-channel sample introduction of greenhouse gas

Abstract

The invention relates to the technical field of gas authentication detection, in particular to a greenhouse gas multi-channel sample injection authentication detection device which comprises a bottom cabinet, a gas chromatograph mounted at the upper end of the bottom cabinet, a U-shaped frame mounted at the upper end of the bottom cabinet, a partition plate mounted in the U-shaped frame, a mounting plate arranged at the front end of the partition plate, and a plurality of first multi-position valves mounted at the front end of the partition plate at equal intervals. A second multi-position valve is arranged at the rear end of the partition plate, a plurality of outlet parts of the second multi-position valve penetrate through the partition plate and communicate with a plurality of inlet parts of the second multi-position valve correspondingly, the outlet parts of the second multi-position valve penetrate through the U-shaped frame and communicate with the gas chromatograph, and a plurality of connecting pieces penetrate through the mounting plate and communicate with the first multi-position valves correspondingly; the plurality of functional parts are respectively communicated with the lower ends of the plurality of connecting parts, the lower ends of the functional parts are equidistantly communicated with the plurality of connecting pipes, and the lower ends of the plurality of connecting pipes are communicated with the sample air bags, so that the automatic circulating type introduction operation of air in the plurality of sample air bags is realized, the labor intensity is effectively reduced, the time is effectively shortened, and the working efficiency is improved.

Description

Technical Field

[0001] The invention discloses a greenhouse gas multi-channel sampling authentication and detection device, belonging to the technical field of gas authentication and detection. Background Art

[0002] The main factor of global climate change is the emission of greenhouse gases, and farmland greenhouse gases mainly include CH4 and N2O, which are important greenhouse gas components of global climate change. In order to reduce the emission of farmland greenhouse gases, it is generally achieved by improving the genetics of varieties and improving the cultivation methods of improved varieties. During the cultivation process of improved varieties, the emission rate and components of greenhouse gases produced are generally detected and analyzed to provide judgment information for variety improvement evaluation, thereby completing the certification of improved varieties; Before the current certification test, a small field is usually sealed in a static box, and the gas in the static box is extracted at regular intervals and stored in an air bag. The gas in the air bag is usually detected and analyzed by a gas chromatograph. When using a gas chromatograph, a quick connection is generally used to connect an air bag to the inlet of the gas chromatograph, and then the gas is detected and analyzed using the gas chromatograph. When the gas detection in the air bag is completed, the air bag is disassembled, and then the second air bag is connected to the inlet of the gas chromatograph and installed, and the detection operation is performed again. Such detection operations are labor-intensive and time-consuming, which will affect work efficiency. Summary of the invention

[0003] In view of the problems in the prior art, the present invention provides a greenhouse gas multi-channel sampling authentication and detection device.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a greenhouse gas multi-channel sampling authentication detection device, comprising a base cabinet, a gas chromatograph is installed on the upper end of the base cabinet, a U-shaped frame is installed on the upper end of the base cabinet, and the U-shaped frame is located on the left side of the gas chromatograph, a partition is installed inside the U-shaped frame, a mounting plate is arranged at the front end of the partition, and the mounting plate is located in the U-shaped frame, a plurality of first multi-position valves are equidistantly installed at the front end of the partition, and the first multi-position valves are located on the upper side of the mounting plate, a second multi-position valve is arranged at the rear end of the partition, a plurality of outlets of the second multi-position valve all penetrate the partition and are respectively connected with a plurality of inlet parts of the second multi-position valve, and an outlet of the second multi-position valve penetrates the U-shaped frame and is connected with the gas chromatograph; A plurality of connectors are equidistantly installed on the lower end of the mounting plate, and the plurality of connectors all penetrate the mounting plate and are respectively connected to a plurality of first multi-position valves; the upper end of the base cabinet is slidably connected to a movable plate, and the movable plate is located on the front side of the partition; a plurality of functional parts are equidistantly arranged directly above the movable plate, and the plurality of functional parts are respectively connected and arranged on the lower ends of a plurality of connectors; a plurality of connecting pipes with control valves are equidistantly installed on the lower ends of the functional parts, and the plurality of connecting pipes are arranged in a circular structure; the lower ends of the plurality of connecting pipes are all connected to sample gas bags, and the sample gas bags are located on the upper side of the movable plate.

[0005] Further, the connecting member includes a plurality of metal tubes, the plurality of metal tubes are rotatably connected to the lower end of the mounting plate, and the plurality of metal tubes penetrate the mounting plate, the plurality of metal tubes are arranged in a circular structure, the upper ends of the plurality of metal tubes are rotatably connected to air pipes, and the plurality of air pipes are respectively connected to the plurality of inlet parts of the first multi-position valve; The lower ends of the plurality of metal tubes are connected to the functional cylinders, and T-shaped rubber plugs are arranged in the plurality of functional cylinders. The vertical portion of the T-shaped rubber plugs has an interference fit with the functional cylinders, and the transverse portion of the T-shaped rubber plugs fits on the lower ends of the functional cylinders.

[0006] Further, the lower end of the mounting plate is slidably connected to the rack, an L-shaped plate is arranged in the middle of the rear end of the rack, a first telescopic device is installed at the left end of the L-shaped plate, and the first telescopic device is located at the rear side of the rack, and a fixing part of the first telescopic device is arranged on the lower end of the mounting plate; The front end of the rack is equidistantly meshed with multiple large ring gears, and the multiple large ring gears are rotatably connected to the lower end of the mounting plate. The annular inner wall of the large ring gear is equidistantly meshed with multiple small ring gears, and the multiple small ring gears are respectively mounted on the outer ends of multiple metal tubes.

[0007] Further, the functional part comprises an annular plate, the inner wall surface of the annular plate is recessed outward to form a plurality of mounting grooves, and the mounting grooves extend to the upper and lower end surfaces of the annular plate respectively, the inner wall surface of the mounting groove is recessed outward to form a plurality of U-shaped grooves, and a U-shaped elastic sheet is installed in each of the plurality of U-shaped grooves, and the two transverse portions of the U-shaped elastic sheet are respectively overlapped with the two opposite inner wall surfaces of the mounting groove facing the inner end surfaces; The upper end of the connecting tube is connected to the installation hollow column, and the hollow column passes through the installation groove and the U-shaped elastic sheet. The middle outer ring end surface of the hollow column is recessed inward to form a plurality of positioning recessed holes. Both lateral parts of the U-shaped elastic sheet are provided with positioning protrusions toward the inner ends, and the positioning protrusions are located in the positioning recessed holes. The middle part of the upper end of the hollow column is connected to the installation pin, and the hollow column is attached to the lower end of the T-shaped rubber plug. The upper end of the pin passes through the T-shaped rubber plug and is connected to the functional cylinder, and the pin and the T-shaped rubber plug are eccentrically arranged.

[0008] Furthermore, a connecting plate is installed between two adjacent annular plates, lifting devices are arranged at the lower ends of the plurality of connecting plates, and the fixing parts of the plurality of lifting devices are equidistantly installed on the upper end of the movable plate.

[0009] Furthermore, a second telescopic device is installed at the rear end of the partition, and the movable part of the second telescopic device passes through the partition and is connected to the rear end of the movable plate. Two telescopic rods are symmetrically arranged at the rear end of the partition, and the two telescopic rods are located on the left and right sides of the second telescopic device. The movable parts of the two telescopic rods both pass through the partition and are connected to the rear end of the movable plate.

[0010] Furthermore, an extraction device is installed on the upper end of the base cabinet, and the extraction device is located on the right side of the gas chromatograph, and the inlet of the extraction device is connected to the gas chromatograph through a pipeline.

[0011] Beneficial effects of the present invention: 1. Utilize multiple second electric push rods, multiple connecting plates, multiple annular plates, hollow columns, pins and other components to make the pins penetrate the T-shaped rubber plug and connect the pins with the functional cylinder, thereby forming a multi-way sampling pipeline, and realizing a quick mechanical one-time connection operation between multiple sample gas bags and multiple inlet parts on multiple first multi-position valves, effectively reducing the probability of leakage and the like caused by multiple connection and installation operations of multiple sample gas bags, effectively reducing the process and time, and effectively ensuring the certification and testing effect, so that the sample gases in the multiple sample gas bags can be introduced into the gas chromatograph in turn, thereby performing a multi-way sampling operation, and realizing the automatic cyclic introduction operation of the sample gases in the multiple sample gas bags, effectively reducing the labor intensity and time, and improving the work efficiency.

[0012] 2. Use the installation groove, U-shaped elastic sheet, positioning protrusion and positioning concave hole to limit the installation of the hollow column on the annular plate, and then install multiple sample air bags in an orderly manner, so as to achieve orderly snap-on quick disassembly and assembly of the sample air bags, effectively reduce the probability of damage to the sample air bags, effectively ensure the effect of subsequent certification and testing, and effectively reduce working time for easy use.

[0013] 3. Utilize the third electric push rod, L-shaped plate, rack, multiple large annular gears and multiple small annular gears to make multiple metal tubes and multiple functional cylinders rotate synchronously, so as to adjust the position of the pin inserted into the T-shaped rubber plug, effectively reduce the probability of leakage caused by multiple pin insertion operations at the same position, and effectively ensure the certification and detection effect.

[0014] 4. The repulsive force between the electromagnet and the magnetic plate causes the pressure plate, the pressure plate and the rubber pad to move inward, thereby squeezing the sample air bag, so that the sample gas in the sample air bag can be squeezed and injected, thereby discharging the blockage in the needle, effectively reducing the probability of the needle being blocked due to penetration operation, effectively ensuring normal injection operation, and effectively ensuring the certification test effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 It is a structural schematic diagram of a greenhouse gas multi-channel sampling authentication detection device of the present invention; Figure 2 It is a front view of a greenhouse gas multi-channel sampling authentication detection device of the present invention; Figure 3 It is a rear view of a greenhouse gas multi-channel sampling authentication detection device of the present invention; Figure 4 It is a cross-sectional view of a greenhouse gas multi-channel sampling authentication detection device of the present invention; Figure 5 for Figure 4 Enlarged view of part A in the middle; Figure 6 It is an assembly diagram of a second multi-position valve and a plurality of first multi-position valves in a greenhouse gas multi-channel sampling authentication and detection device of the present invention; Figure 7 It is an assembly diagram of a rack, a large ring gear and a small ring gear in a greenhouse gas multi-channel sampling authentication detection device of the present invention; Figure 8 It is an assembly diagram of a second electric push rod, a connecting plate and an annular plate in a greenhouse gas multi-channel sampling authentication and detection device of the present invention; Fig. 9 It is a cross-sectional view of an annular plate in a greenhouse gas multi-channel sampling authentication and detection device of the present invention; Fig.10 for Fig. 9 Enlarged view of middle part B; Fig.11 It is an assembly diagram of a sample gas bag, a connecting tube, a pin and a hollow column in a greenhouse gas multi-channel sampling authentication detection device of the present invention; Fig.12 It is a schematic diagram of another embodiment of a greenhouse gas multi-channel sampling authentication detection device of the present invention; Fig.13 for Fig.12 A cross-sectional view of Fig.14 for Fig.13 Enlarged view of part C in the middle.

[0016] In the figure: 1, U-shaped frame, 2, gas chromatograph, 3, bottom cabinet, 4, movable plate, 5, sample gas bag, 6, mounting plate, 7, first multi-position valve, 8, second multi-position valve, 11, partition, 13, telescopic rod, 14, first electric push rod, 31, vacuum pump, 41, second electric push rod, 42, connecting plate, 43, annular plate, 51, connecting pipe, 52, pin, 53, hollow column, 61, T-shaped rubber plug, 62, functional cylinder, 63, Metal tube, 64, large ring gear, 65, rack, 66, small ring gear, 71, air pipe, 401, cylinder, 402, rubber pad, 403, pressure plate, 404, magnetic plate, 405, electromagnet, 406, rectangular groove, 407, elastic member, 431, mounting groove, 432, U-shaped elastic sheet, 433, U-shaped groove, 434, positioning protrusion, 531, positioning recessed hole, 651, third electric push rod, 652, L-shaped plate. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0018] Embodiment 1: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 As shown, a greenhouse gas multi-channel sampling authentication detection device is provided, including a base cabinet 3, a gas chromatograph 2 is installed on the upper end of the base cabinet 3, and the sample gas is analyzed and detected by the gas chromatograph 2, so as to determine the components of the greenhouse gases produced by the farmland for authentication detection, and provide auxiliary data for the subsequent improvement of crop cultivation methods and genetic improvement of varieties. The structure and working principle of the gas chromatograph 2 are both existing technologies and will not be repeated here. The two vertical parts of the U-shaped frame 1 located on the left side of the gas chromatograph 2 are both installed on the upper end of the base cabinet 3, and the U-shaped frame 1 is used to provide a mounting carrier for the partition 11 and other components, and then the partition 11 is installed inside the U-shaped frame 1, and the partition 11 is used to provide a mounting carrier for the first multi-position valve 7 and other components; The mounting plate 6 located in the U-shaped frame 1 is arranged on the front end of the partition 11, and a mounting carrier is provided for the metal tube 63 and other components through the mounting plate 6, and a plurality of first multi-position valves 7 located on the upper side of the mounting plate 6 are equidistantly installed on the front end of the partition 11, and a plurality of delivery pipelines are provided for sample injection through the first multi-position valve 7, and the first multi-position valve 7 can be a sixteen-position valve, and then a second multi-position valve 8 whose multiple outlets all penetrate the partition 11 and are respectively connected to the multiple inlet parts of the second multi-position valve 8 and whose outlets penetrate the U-shaped frame 1 and are connected to the gas chromatograph 2 is arranged on the rear end of the partition 11, and the plurality of first multi-position valves 7 are connected to the gas chromatograph 2 through the second multi-position valve 8, and the second multi-position valve 8 can be a six-position valve; A structure formed by a plurality of metal tubes 63 arranged in a circular structure and penetrating the mounting plate 6 and rotatably connected to the mounting plate 6 is equidistantly mounted on the lower end of the mounting plate 6, and a plurality of air pipes 71 respectively connected to the plurality of inlet portions of the first multi-position valve 7 are rotatably connected to the upper ends of the plurality of metal tubes 63, and the metal tubes 63 are connected to the first multi-position valve 7 through the air pipes 71, and then a plurality of functional cylinders 62 are respectively connected and mounted on the lower ends of the plurality of metal tubes 63, and a mounting carrier is provided for the T-shaped rubber plug 61 through the functional cylinder 62, and a T-shaped rubber plug 61 whose horizontal portion is attached to the lower end of the functional cylinder 62 and whose vertical portion is interference fit with the functional cylinder 62 is arranged in the functional cylinder 62, and the opening of the functional cylinder 62 is blocked through the T-shaped rubber plug 61; The movable plate 4 located at the front side of the partition 11 is slidably connected to the upper end of the base cabinet 3, and a mounting carrier is provided for lifting equipment and other components through the movable plate 4, and a plurality of annular plates 43 are equidistantly arranged between the upper end of the movable plate 4 and the mounting plate 6, and a processing carrier is provided for components such as the mounting groove 431 through the annular plate 43, and a plurality of mounting grooves 431 are formed on the inner wall surface of the annular plate 43 to extend to the upper and lower end surfaces of the annular plate 43 respectively, and a mounting space is provided for the hollow column 53 through the mounting groove 431, and a plurality of U-shaped grooves 433 are formed on the inner wall surface of the mounting groove 431 to provide a mounting space for the U-shaped elastic sheet 432 through the U-shaped groove 433, and then the U-shaped elastic sheet 432 whose two transverse parts face inwardly and overlap with the two opposite inner wall surfaces in the mounting groove 431 respectively, is installed in the U-shaped groove 433, and a mounting carrier is provided for the positioning protrusion 434 through the U-shaped elastic sheet 432; The hollow column 53 that passes through the installation groove 431 and the U-shaped elastic sheet 432 and is connected and installed on the upper end of the connecting tube 51 is fitted on the lower end of the T-shaped rubber plug 61. The connecting tube 51 is connected to the plug pin 52 through the hollow column 53. A plurality of positioning recessed holes 531 are formed inwardly on the outer ring end surface of the middle part of the hollow column 53. The positioning recessed holes 531 provide installation space for the positioning protrusions 434. The two positioning protrusions 434 located in the positioning recessed holes 531 are respectively arranged on the two transverse inner ends of the U-shaped elastic sheet 432. The two positioning protrusions 434 cooperate with the corresponding two positioning recessed holes 531 to quickly clamp the hollow column 53. Then, the plug pin 52, which passes through the T-shaped rubber plug 61 at the upper end and is connected and arranged to communicate with the functional cylinder 62 and is eccentrically arranged with the T-shaped rubber plug 61, is connected and installed on the middle part of the upper end of the hollow column 53. The functional cylinder 62 is connected to the hollow column 53 through the plug pin 52. The sample gas bag 5 located on the upper side of the movable plate 4 is connected and arranged on the lower end of the connecting pipe 51 with a control valve. The sample gas bag 5 is used to temporarily store the sample gas. The connecting plate 42 is installed between two adjacent annular plates 43. The two adjacent annular plates 43 are connected through the connecting plate 42. The movable part of the lifting device with multiple fixed parts installed on the upper end of the movable plate 4 is connected to the lower ends of the multiple connecting plates 42. The multiple lifting devices are used in combination to drive the multiple connecting plates 42 to move up and down. The lifting device can use a second electric push rod 41. Then, the extraction device located on the right side of the gas chromatograph 2 and the inlet of which is connected to the gas chromatograph 2 through a pipeline is installed on the upper end of the base cabinet 3. The inner cavity of the gas chromatograph 2 and the pipeline formed by the air pipe 71, the metal pipe 63 and other components are vacuumed through the extraction device. The extraction device can use an exhaust pump 31.

[0019] First, store the collected sample gas in the sample gas bag 5, and number the corresponding sample gas bag 5. Before testing the emission rate and certification of greenhouse gases in farmland, first put the corresponding hollow column 53 into the installation groove 431 in the order of numbering, and make the hollow column 53 snap into the U-shaped elastic sheet 432, and then make the two positioning protrusions 434 on the U-shaped elastic sheet 432 snap into the corresponding two positioning recessed holes 531 on the hollow column 53, so as to limit the installation of the hollow column 53 on the annular plate 43, and then quickly limit the installation of the sample gas bag 5. With the above steps, install multiple sample gas bags 5 in order according to the order of numbering, and realize the orderly snap-on quick disassembly and assembly of the sample gas bag 5, effectively reduce the probability of damage to the sample gas bag 5, effectively ensure the effect of subsequent certification and detection, and effectively reduce the working time, which is easy to use; Then, the plurality of second electric push rods 41 are started, thereby driving the plurality of connecting plates 42 to move upward, and then the plurality of annular plates 43 to move upward, so that the hollow column 53, the plug pin 52 and other components move upward, and then the plug pin 52 penetrates the corresponding T-shaped rubber plug 61, and the plug pin 52 is connected with the functional cylinder 62, so as to form a multi-channel sampling pipeline, so that the plurality of sample air bags 5 can be respectively connected with the plurality of inlet parts on the plurality of first multi-position valves 7 by a fast mechanical one-time connection operation, effectively reducing the probability of leakage caused by multiple connection and installation operations of the plurality of sample air bags 5, effectively reducing the process and time, and effectively ensuring the certification and detection effect; When in use, first create a detection sequence on the gas chromatograph 2 that is the same as the number of installed sample gas bags 5, first start the gas chromatograph 2, and according to the control program, connect an inlet portion on the corresponding first multi-position valve 7, connect an inlet portion on the corresponding second multi-position valve 8, and open the control valve on the corresponding connecting pipe 51, then the sample gas in the corresponding sample gas bag 5 enters the gas chromatograph 2 along the connecting pipe 51, the pin 52, the functional cylinder 62, the metal tube 63, the gas pipe 71, the first multi-position valve 7, and the second multi-position valve 8, and then the gas chromatograph 2 performs gas detection through the corresponding detection sequence, thereby analyzing the components of the sample gas; Then, an inlet portion on the first multi-position valve 7 is closed and the control valve on the corresponding connecting pipe 51 is closed, and then the vacuum pump 31 is started to evacuate the gas chromatograph 2 and the injection pipeline, so as to discharge the residual air in the gas chromatograph 2 and the injection pipeline, and effectively prevent the residual air in the pipeline from affecting the detection accuracy; Similar to the above steps, the sample gases in the multiple sample gas bags 5 are introduced into the gas chromatograph 2 in sequence according to the detection sequence, and the gas chromatograph 2 is used to detect and analyze the multiple sample gases, thereby performing a multi-channel sampling operation, realizing an automated cyclic introduction operation of the sample gases in the multiple sample gas bags 5, effectively reducing labor intensity and time, and improving work efficiency.

[0020] Embodiment 2: The T-shaped rubber plug 61 is penetrated by the needle 52 to connect the hollow column 53 with the functional cylinder 62, thereby forming an injection line, which allows the sample gas in the sample gas bag 5 to enter the gas chromatograph 2 through the injection line, so that the gas chromatograph 2 is used to perform authentication, detection and analysis operations on the sample gas. However, the position of the needle 52 penetrating the T-shaped rubber plug 61 is generally unchanged, resulting in a high probability of leakage due to multiple re-penetration operations of the needle 52, which will affect the subsequent authentication and detection results.

[0021] In order to solve the above problems, Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7As shown, the rack 65 is slidably connected to the lower end of the mounting plate 6, and the multiple large ring gears 64 are rotated synchronously through the rack 65, and the L-shaped plate 652 is set on the middle part of the rear end of the rack 65, and the movable part of the first telescopic device is connected to the rack 65 through the L-shaped plate 652, and then the movable part of the first telescopic device located at the rear side of the rack 65 and the fixed part is set at the lower end of the mounting plate 6 is connected to the left end of the L-shaped plate 652, and the L-shaped plate 652 is driven to move left and right through the first telescopic device. The first telescopic device can use a third electric push rod 651, and the multiple large ring gears 64 equidistantly meshed at the front end of the rack 65 are all rotatably connected to the lower end of the mounting plate 6, and the corresponding multiple small ring gears 66 are rotated through the large ring gear 64; A plurality of small ring gears 66 respectively installed at the outer ends of a plurality of metal tubes 63 are equidistantly meshed on the annular inner wall of the large ring gear 64, and the metal tube 63 is rotated through the small ring gears 66, and the fixed part of the second telescopic device whose movable part passes through the partition 11 and is connected to the rear end of the movable plate 4 is installed on the rear end of the partition 11, and the movable plate 4 is driven to move forward and backward through the second telescopic device. The second telescopic device can adopt the first electric push rod 14, and then the fixed parts of the telescopic rods 13 with two movable parts located on the left and right sides of the second telescopic device that pass through the partition 11 and are connected to the rear end of the movable plate 4 are symmetrically arranged on the rear end of the partition 11, and the two telescopic rods 13 are used in combination to guide the movement of the movable plate 4.

[0022] When in use, first start the first electric push rod 14, and then drive the movable plate 4 to move forward along the bottom cabinet 3, so that the multiple second electric push rods 41, multiple connecting plates 42 and multiple annular plates 43 move forward to the limit position, and then put the corresponding hollow column 53 into the installation groove 431 in the order of numbering, and make the hollow column 53 snap into the U-shaped elastic sheet 432, and then make the two positioning protrusions 434 on the U-shaped elastic sheet 432 snap into the corresponding two positioning recessed holes 531 on the hollow column 53, so that the hollow column 53 is limited to be installed on the annular plate 43, and then the sample air bag 5 is quickly limited and installed. In the same way as the above steps, the multiple sample air bags 5 are installed in order in the order of numbering; Then, the first electric push rod 14 is used to move the movable plate 4 and the multiple installed sample air bags 5 backward to the original position, and then the third electric push rod 651 is started to drive the L-shaped plate 652 to move rightward, thereby moving the rack 65 to the right for a distance, and making the multiple large ring gears 64 rotate synchronously, thereby making the multiple small ring gears 66 rotate synchronously, and then making the multiple metal tubes 63 rotate synchronously, thereby making the multiple functional cylinders 62 rotate synchronously, so as to adjust the position of the insertion pin 52 into the T-shaped rubber plug 61, effectively reducing the probability of leakage caused by multiple insertion operations of the insertion pin 52 at the same position, and effectively ensuring the authentication detection effect; Then, using multiple second electric push rods 41, multiple connecting plates 42, multiple annular plates 43, hollow columns 53, pins 52 and other components, the pins 52 are made to penetrate the corresponding T-shaped rubber plugs 61, and the pins 52 are connected to the functional cylinder 62, thereby forming a multi-way sampling pipeline, and then the sample gases in the multiple sample gas bags 5 are introduced into the gas chromatograph 2 in turn, and the gas chromatograph 2 is used to detect and analyze the multiple sample gases.

[0023] Embodiment three: The T-shaped rubber plug 61 is penetrated by the needle 52 to connect the hollow column 53 with the functional cylinder 62, thereby forming an injection pipeline, which allows the sample gas in the sample gas bag 5 to enter the gas chromatograph 2 through the injection pipeline, so that the gas chromatograph 2 is used to perform authentication, detection and analysis operations on the sample gas. However, in the process of the needle 52 penetrating the T-shaped rubber plug 61, the residual material of the T-shaped rubber plug 61 is easily entered into the needle 52, resulting in a high probability of clogging of the needle 52, which will affect the subsequent normal injection operation.

[0024] In order to solve the above problems, Figure 12-14 As shown, a plurality of cylinders 401 located at the lower side of the annular plate 43 are equidistantly mounted on the upper end of the movable plate 4, and a processing carrier is provided for the rectangular groove 406 through the movable plate 4, and a plurality of rectangular grooves 406 arranged in a circular structure are formed by a downward depression on the upper end surface of the cylinder 401, and the lower end of the sample air bag 5 extends into the rectangular groove 406, and the inner end of the sample air bag 5 is fitted with the inner wall of the rectangular groove 406, and an installation space is provided for components such as the electromagnet 405 through the rectangular groove 406, and a pressing plate 403 is slidably connected in the rectangular groove 406, and on the one hand, a mounting carrier is provided for components such as the rubber pad 402 through the pressing plate 403, and on the other hand, the sample air bag 5 is squeezed, and then the rubber pad 402 fitted on the outer end of the sample air bag 5 is arranged on the inner end of the pressing plate 403, and the sample air bag 5 is protected by the rubber pad 402; The magnetic plate 404 is installed on the outward end of the pressure plate 403, and the electromagnet 405 located on the outward positive side of the magnetic plate 404 and arranged to repel each other with the magnetic plate 404 is installed on the outward inner wall of the rectangular groove 406. The electromagnet 405 is used in conjunction with the magnetic plate 404 to move the pressure plate 403 inward, and then four elastic members 407 located on the outside of the magnetic plate 404 and the outside of the electromagnet 405 are respectively installed at the four corner positions between the pressure plate 403 and the outward inner wall of the rectangular groove 406. The four elastic members 407 are used in conjunction to return the pressure plate 403 and other components to their original positions, and the elastic members 407 can be springs.

[0025] When in use, first use the first electric push rod 14 and the movable plate 4 to move the multiple second electric push rods 41, the multiple connecting plates 42 and the multiple annular plates 43 forward to the limit position, and then put the corresponding hollow column 53 into the installation groove 431 in the order of numbering, and make the hollow column 53 snap into the U-shaped elastic sheet 432, and then make the two positioning protrusions 434 on the U-shaped elastic sheet 432 snap into the corresponding two positioning recessed holes 531 on the hollow column 53, so that the hollow column 53 is limited to be installed on the annular plate 43, and then the sample air bag 5 is quickly limited and installed, and then the sample air bag 5 is inserted into the corresponding rectangular groove 406. At this time, the sample air bag 5 is located between the inner wall of the rectangular groove 406 and the rubber pad 402. In the same way as the above steps, the multiple sample air bags 5 are installed in order in the order of numbering; Then, the first electric push rod 14 is used to move the movable plate 4 and the multiple installed sample air bags 5 backward to the original position, and then the third electric push rod 651, the L-shaped plate 652, the rack 65, the multiple large ring gears 64, the multiple small ring gears 66 and the multiple metal tubes 63 are used to make the multiple functional cylinders 62 rotate synchronously, so as to adjust the position where the pin 52 is inserted into the T-shaped rubber plug 61, and then the multiple second electric push rods 41, the multiple connecting plates 42, the multiple ring plates 43, the hollow column 53, the pin 52 and other components are used to make the pin 52 penetrate the corresponding T-shaped rubber plug 61, and make the pin 52 communicate with the functional cylinder 62, so as to form a multi-channel sampling pipeline; Then, according to the control program, an inlet portion on the corresponding first multi-position valve 7 is connected, an inlet portion on the corresponding second multi-position valve 8 is connected, and the control valve on the corresponding connecting pipe 51 is opened, and the circuit of the corresponding electromagnet 405 is turned on, so that a repulsive force is generated between the electromagnet 405 and the magnetic plate 404, and under the action of the repulsive force, the pressing plate 403 moves inward, and the elastic member 407 is stretched, so that the elastic member 407 generates an elastic force; At the same time, the inward movement of the pressing plate 403 causes the rubber pad 402 to move inward, thereby squeezing the sample air bag 5, so that the sample gas in the sample air bag 5 enters the gas chromatograph 2 along the connecting tube 51, the plug pin 52, the functional tube 62, the metal tube 63, the air pipe 71, the first multi-position valve 7 and the second multi-position valve 8, and then the gas chromatograph 2 performs gas detection through the corresponding detection sequence, thereby analyzing the components of the sample gas, and realizing the extrusion type sampling operation of the sample gas in the sample air bag 5, thereby discharging the blockage in the plug pin 52, effectively reducing the probability of the plug pin 52 being blocked due to the penetration operation, effectively ensuring the normal sampling operation, and effectively ensuring the certification detection effect; After the sample gas in the sample air bag 5 is discharged, the circuit of the corresponding electromagnet 405 is disconnected first, and the elastic force of the elastic member 407 causes the pressure plate 403 and the rubber pad 402 to return to their original positions, thereby releasing the squeezing of the sample air bag 5, facilitating the convenient disassembly and assembly between the sample air bag 5 and the rectangular groove 406, and facilitating the subsequent installation of the sample air bag 5.

[0026] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A greenhouse gas multi-channel sampling authentication detection device, characterized in that: The invention comprises a base cabinet (3), a gas chromatograph (2) being installed at the upper end of the base cabinet (3), a U-shaped frame (1) being installed at the upper end of the base cabinet (3), and the U-shaped frame (1) being located on the left side of the gas chromatograph (2), a partition (11) being installed inside the U-shaped frame (1), a mounting plate (6) being arranged at the front end of the partition (11), and the mounting plate (6) being located inside the U-shaped frame (1), a plurality of first multi-position valves (7) being equidistantly installed at the front end of the partition (11), and the first multi-position valves (7) being located on the upper side of the mounting plate (6), a second multi-position valve (8) being arranged at the rear end of the partition (11), a plurality of outlets of the second multi-position valve (8) all passing through the partition (11) and being respectively connected to a plurality of inlet portions of the second multi-position valve (8), and an outlet of the second multi-position valve (8) passing through the U-shaped frame (1) and being connected to the gas chromatograph (2); A plurality of connectors are equidistantly mounted on the lower end of the mounting plate (6), and the plurality of connectors all penetrate the mounting plate (6) and are respectively connected to a plurality of first multi-position valves (7). The upper end of the base cabinet (3) is slidably connected to a movable plate (4), and the movable plate (4) is located on the front side of the partition (11). A plurality of functional parts are equidistantly mounted directly above the movable plate (4), and the plurality of functional parts are respectively connected and arranged on the lower ends of the plurality of connectors. A plurality of connecting pipes (51) with control valves are equidistantly mounted on the lower ends of the functional parts, and the plurality of connecting pipes (51) are arranged in a circular structure. The lower ends of the plurality of connecting pipes (51) are all connected and arranged with sample gas bags (5), and the sample gas bags (5) are located on the upper side of the movable plate (4).

2. The greenhouse gas multi-channel sampling authentication detection device according to claim 1, characterized in that: The connecting member comprises a plurality of metal tubes (63), the plurality of metal tubes (63) are all rotatably connected to the lower end of the mounting plate (6), and the plurality of metal tubes (63) all penetrate the mounting plate (6), the upper ends of the plurality of metal tubes (63) are all rotatably connected to the air pipe (71), and the plurality of air pipes (71) are respectively connected to the plurality of inlet portions of the first multi-position valve (7); The lower ends of the plurality of metal tubes (63) are all connected to the functional cylinder (62), and T-shaped rubber plugs (61) are arranged in the plurality of functional cylinders (62). The vertical portion of the T-shaped rubber plug (61) is interference fit with the functional cylinder (62), and the horizontal portion of the T-shaped rubber plug (61) is fitted on the lower end of the functional cylinder (62).

3. The greenhouse gas multi-channel sampling authentication detection device according to claim 2, characterized in that: The lower end of the mounting plate (6) is slidably connected to the rack (65), an L-shaped plate (652) is provided in the middle of the rear end of the rack (65), a first telescopic device is installed at the left end of the L-shaped plate (652), and the first telescopic device is located at the rear side of the rack (65), and a fixing portion of the first telescopic device is provided on the lower end of the mounting plate (6); The front end of the rack (65) is equidistantly meshed with a plurality of large annular gears (64), and the plurality of large annular gears (64) are all rotatably connected to the lower end of the mounting plate (6); the annular inner wall of the large annular gear (64) is equidistantly meshed with a plurality of small annular gears (66), and the plurality of small annular gears (66) are respectively mounted on the outer ends of a plurality of metal tubes (63).

4. The greenhouse gas multi-channel sampling authentication detection device according to claim 1, characterized in that: The functional part comprises an annular plate (43), the inner wall surface of the annular plate (43) is recessed outwards to form a plurality of mounting grooves (431), and the mounting grooves (431) respectively extend to the upper and lower end surfaces of the annular plate (43), the inner wall surface of the mounting groove (431) is recessed outwards to form a plurality of U-shaped grooves (433), a U-shaped elastic sheet (432) is installed in each of the plurality of U-shaped grooves (433), and the inner end surfaces of two transverse portions of the U-shaped elastic sheet (432) respectively overlap with two opposite inner wall surfaces of the mounting groove (431); The upper end of the connecting tube (51) is connected to the mounting hollow column (53), and the hollow column (53) passes through the mounting groove (431) and the U-shaped elastic sheet (432). The middle outer ring end surface of the hollow column (53) is recessed inward to form a plurality of positioning recessed holes (531). Both lateral parts of the U-shaped elastic sheet (432) are provided with positioning protrusions (434) toward the inner ends, and the positioning protrusions (434) are located in the positioning recessed holes (531). The middle part of the upper end of the hollow column (53) is connected to the mounting pin (52), and the hollow column (53) is fitted on the lower end of the T-shaped rubber plug (61). The upper end of the pin (52) passes through the T-shaped rubber plug (61) and is connected to the functional cylinder (62), and the pin (52) and the T-shaped rubber plug (61) are eccentrically arranged.

5. The greenhouse gas multi-channel sampling authentication detection device according to claim 4, characterized in that: A connecting plate (42) is installed between two adjacent annular plates (43), a plurality of connecting plates (42) are provided with lifting devices at their lower ends, and the fixing parts of the plurality of lifting devices are equidistantly installed on the upper end of the movable plate (4).

6. The greenhouse gas multi-channel sampling authentication detection device according to claim 1, characterized in that: A second telescopic device is installed at the rear end of the partition (11), and the movable portion of the second telescopic device passes through the partition (11) and is connected to the rear end of the movable plate (4). Two telescopic rods (13) are symmetrically arranged at the rear end of the partition (11), and the two telescopic rods (13) are located on the left and right sides of the second telescopic device. The movable portions of the two telescopic rods (13) both pass through the partition (11) and are both connected to the rear end of the movable plate (4).

7. The greenhouse gas multi-channel sampling authentication detection device according to claim 1, characterized in that: An extraction device is installed on the upper end of the base cabinet (3), and the extraction device is located on the right side of the gas chromatograph (2). The inlet of the extraction device is connected to the gas chromatograph (2) through a pipeline.

Images