Double-gas-path calibration structure of portable greenhouse gas monitor

Abstract

The utility model discloses a portable greenhouse gas monitor's double gas path calibration structure relates to gas monitor technical field, this greenhouse gas monitor's double gas path calibration structure includes greenhouse gas monitor, and the back end of greenhouse gas monitor is integrally formed with the setting of installation back seat, and the inductive end of greenhouse gas monitor is installed with the setting of sampling head, still include: the tray of carrying, its setting is below the position of sampling head, and one side of tray of carrying is provided with two gas path pipes, and the included angle between two gas path pipes is ninety degrees, and the bottom of gas path pipe is provided with the bottom connection pipe, and the upper end of bottom connection pipe is welded with the setting of connecting spring, and the upper end of connecting spring is welded with the setting of the inner tube of inserting, solved the greenhouse gas emission monitoring device of existing through the setting drive assembly height adjustment is driven, but in the process of using, can't carry out the independent detection of calibration gas and the gas to be measured simultaneously, leads to the problem of cross -contamination that is easy to appear.

Description

Technical Field

[0001] This utility model relates to the field of gas monitoring technology, specifically a dual-gas-path calibration structure for a portable greenhouse gas monitoring instrument. Background Technology

[0002] Greenhouse gas monitors are instruments that use optical absorption technology to accurately measure greenhouse gas concentrations and are widely used in the fields of biology, agronomy, forestry, and environmental monitoring.

[0003] For example, announcement number CN213776970U (titled "An Adjustable Greenhouse Gas Emission Monitor") includes a base, a vertical plate fixed to the upper surface of the base, a support box with one end sleeved outside the vertical plate, a drive assembly connecting the support box and the vertical plate, and a greenhouse gas monitoring sensor installed above the support box. The support box is slidably connected to the vertical plate longitudinally. The drive assembly is used to drive the support box to reciprocate longitudinally. Universal wheels are provided around the lower surface of the base. The drive assembly includes a rack fixed longitudinally to one side of the vertical plate, a worm gear meshing with the rack, a worm meshing with the worm gear, a rotating shaft connected to the worm, and a... A drive motor connected to a rotating shaft is included. The worm gear is rotatably connected to the support housing, with the upper part of the worm gear penetrating the support housing. A bearing is fixed between the support plate and the support housing. The rotating shaft is rotatably connected between the support housing and the support plate via the bearing. Trigger components are provided on the upper and lower sides of the support housing. Two touch switches are respectively installed on the upper part of the upright plate and the upper surface of the base, which is easy to implement. The drive components drive the greenhouse gas monitoring sensor on the support housing to adjust its height, fully considering the problem of uneven greenhouse gas distribution. It flexibly and reasonably conducts multi-sample monitoring based on the actual greenhouse gas emissions in the workshop, ensuring the accuracy of the monitoring.

[0004] The aforementioned greenhouse gas emission monitoring device adjusts its height using a drive component, but it cannot simultaneously perform independent detection of the calibration gas and the gas to be tested, which can easily lead to cross-contamination. To address this, we provide a dual-gas-path calibration structure for a portable greenhouse gas monitor. Utility Model Content

[0005] The purpose of this invention is to provide a dual-path calibration structure for a portable greenhouse gas monitor, in order to solve the problem mentioned in the background art that the existing greenhouse gas emission monitoring devices adjust the height by means of a drive component, but cannot simultaneously perform independent detection of the calibration gas and the gas to be tested, which easily leads to cross-contamination.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dual-gas-path calibration structure for a portable greenhouse gas monitor, comprising a greenhouse gas monitor, an integrally formed mounting base on the rear end face of the greenhouse gas monitor, and a sampling head mounted on the sensing end of the greenhouse gas monitor; Also includes: The carrier plate is positioned below the sampling head, and two air passages are provided on one side of the carrier plate. The included angle between the two air passages is 90 degrees. A bottom pipe is connected to the bottom of the air passage, and a connecting spring is welded to the upper end of the bottom pipe. An inner insertion tube is welded to the upper end of the connecting spring. The air passage is connected to the sampling head in an insert-type sealed connection through the inner insertion tube. The first I-shaped shaft is rotatably mounted inside the center of the support plate, and two connecting rods are provided at the upper end of the first I-shaped shaft. The two ends of the connecting rods are welded to the first I-shaped shaft of the air passage pipe respectively. An air pump carrier is positioned below the support plate, and an air pump is fixedly mounted on the upper end of the air pump carrier by screws. An air inlet pipe and an air injection pipe are respectively provided on the air inlet and exhaust ends of the air pump, and the air injection pipe is internally inserted and sealed to the bottom pipe.

[0007] Preferably, a threaded rod is threaded through the internal screw hole of the support plate, and a hanging shaft is welded to the lower end of the threaded rod. A second I-shaped shaft is rotatably connected inside the air pump carrier, and the lower end of the second I-shaped shaft is welded to the hanging shaft.

[0008] Preferably, the outer wall of the air passage is provided with a movable groove, and a handle block is slidably disposed inside the movable groove. The handle block and the inner tube are an integral structure.

[0009] Preferably, an air intake end plate is welded to one end of the air intake pipe, and an air filter screen is fixedly installed in the internal groove of the air intake end plate by screws.

[0010] Preferably, a handheld connecting rod is provided between the carrier plate and the greenhouse gas monitor, and the two ends of the handheld connecting rod are welded to the carrier plate and the greenhouse gas monitor, respectively.

[0011] Preferably, a sealing ring is provided at the lower end of the bottom tube, and the sealing ring is fixedly connected to the bottom tube by a nail-free adhesive.

[0012] Preferably, an exhaust pipe is connected to one side of the outer wall of the sampling head, and an exhaust valve is provided on the exhaust pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This invention uses two gas lines for independent detection of calibration gas and test gas, respectively. The first I-shaped shaft is rotatably connected to the support plate, which drives the two gas lines to rotate and switch, thus enabling independent detection of the two gases. Rotating the threaded rod drives the air pump carrier to move up and down, thereby driving the air pump to move up and down synchronously, so that the gas injection pipe is inserted into the bottom pipe. This overcomes the problem that existing greenhouse gas emission monitoring devices use a drive component to adjust the height, but cannot simultaneously detect calibration gas and test gas independently during use, which can easily lead to cross-contamination. Attached Figure Description

[0014] Figure 1 This is a front view of the dual-gas-path calibration structure of the portable greenhouse gas monitor of this utility model. Figure 2 This is a bottom view of the dual-gas-path calibration structure of the portable greenhouse gas monitor of this utility model; Figure 3 This is a side view of the dual-gas-path calibration structure of the portable greenhouse gas monitor of this utility model; Figure 4 This is a top view of the dual-gas-path calibration structure of the portable greenhouse gas monitor of this utility model; In the diagram: 1. Greenhouse gas monitor; 2. Mounting base; 3. Sampling head; 4. Exhaust pipe; 5. Gas outlet valve; 6. Handheld connecting rod; 7. Support plate; 8. Gas pipe; 9. Inner tube; 10. Movable groove; 11. Handle block; 12. First I-shaped shaft; 13. Connecting rod; 14. Gas pump carrier; 15. Air pump; 16. Gas injection pipe; 17. Inlet pipe; 18. Inlet end plate; 19. Bottom connecting pipe; 20. Sealing ring; 21. Second I-shaped shaft; 22. Hanging shaft; 23. Threaded rod; 24. Gas filter screen; 25. Connecting spring. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Please see Figure 1-4This utility model provides an embodiment of a dual-gas-path calibration structure for a portable greenhouse gas monitor, comprising a greenhouse gas monitor 1, an integrally formed mounting base 2 on the rear end face of the greenhouse gas monitor 1, and a sampling head 3 mounted on the sensing end of the greenhouse gas monitor 1; it also includes a support plate 7, which is positioned below the sampling head 3, and two gas pipes 8 are provided on one side of the support plate 7, with an included angle of 90 degrees between the two gas pipes 8, a bottom pipe 19 is internally connected to the bottom of the gas pipe 8, a connecting spring 25 is welded to the upper end of the bottom pipe 19, and an inner insertion tube 9 is welded to the upper end of the connecting spring 25, and the gas pipe 8 is inserted into the sampling head 3 through the inner insertion tube 9 in an insert-type sealed connection; The first I-shaped shaft 12 is rotatably mounted inside the center of the support plate 7, and two connecting rods 13 are provided at the upper end of the first I-shaped shaft 12. The two ends of the connecting rods 13 are welded to the first I-shaped shaft 12 of the air passage pipe 8 respectively. The air pump carrier 14 is located below the support plate 7, and the upper end of the air pump carrier 14 is fixed with an air pump 15 by screws. The air pump 15 has an air inlet pipe 17 and an air injection pipe 16 on its air inlet and exhaust ends respectively. The air injection pipe 16 is internally inserted and sealed to the bottom pipe 19.

[0017] In use, the two gas lines 8 are used for independent detection of calibration gas and test gas, respectively. The first I-shaped shaft 12 is rotated and connected to the support plate 7, which drives the two gas lines 8 to rotate and switch, so that the two gases can be detected independently. By rotating the threaded rod 23, the air pump carrier 14 is driven to move up and down, which in turn drives the suction pump 15 to move up and down synchronously, so that the gas injection tube 16 is inserted into the bottom tube 19. The connecting spring 25 drives the inner tube 9 to move up and down elastically, so that the gas line 8 is sealed to the sampling head 3. After the suction pump 15 has finished pumping the gas, the inner wall of the tube cavity is washed with a neutral detergent to ensure that there is no dirt residue and further avoid cross-contamination.

[0018] Please see Figure 2 A threaded rod 23 is threaded through the internal threaded hole of the support plate 7. A hanging shaft 22 is welded to the lower end of the threaded rod 23. A second I-shaped shaft 21 is rotatably connected inside the air pump carrier 14. The lower end of the second I-shaped shaft 21 is welded to the lower end of the hanging shaft 22. The threaded rod 23 threaded through the internal threaded hole of the support plate 7 serves to move up and down with the internal threaded hole of the support plate 7. Please refer to [link / reference]. Figure 1 The outer wall of the air passage tube 8 is provided with a movable groove 10, and a handle block 11 is slidably disposed inside the movable groove 10. The handle block 11 and the inner insertion tube 9 are integrally formed. The movable groove 10 on the outer wall of the air passage tube 8 facilitates the raising and lowering of the handle block 11, thereby driving the inner insertion tube 9 to raise and lower synchronously. Please refer to [link / reference]. Figure 2An intake end plate 18 is welded to one end of the intake pipe 17. A filter screen 24 is fixedly installed in the internal groove of the intake end plate 18 by screws. The intake end plate 18 welded to one end of the intake pipe 17 serves to support the filter screen 24. Please refer to [link / reference]. Figure 3 A handheld connecting rod 6 is provided between the carrier plate 7 and the greenhouse gas monitor 1. The two ends of the handheld connecting rod 6 are welded to the carrier plate 7 and the greenhouse gas monitor 1, respectively. The handheld connecting rod 6 serves to connect the carrier plate 7 and the greenhouse gas monitor 1, thereby facilitating the handheld and portable operation of the greenhouse gas monitor 1. Please refer to [link / reference]. Figure 1 A sealing ring 20 is provided at the lower end of the bottom connector 19. The sealing ring 20 is fixedly connected to the bottom connector 19 by a nail-free adhesive. The sealing ring 20 at the lower end of the bottom connector 19 serves to seal the connection between the air injection pipe 16 and the bottom connector 19. Please refer to [link / reference]. Figure 1 An exhaust pipe 4 is connected to one side of the outer wall of the sampling head 3, and an exhaust valve 5 is installed on the exhaust pipe 4. The exhaust pipe 4 connected to one side of the outer wall of the sampling head 3 serves to facilitate the discharge of detection gas from the inside of the sampling head 3.

[0019] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A dual-path calibration structure for a portable greenhouse gas monitor, comprising a greenhouse gas monitor (1), an mounting base (2) integrally formed on the rear end face of the greenhouse gas monitor (1), and a sampling head (3) installed on the sensing end of the greenhouse gas monitor (1). Its features are: Also includes: The support plate (7) is located below the sampling head (3), and two air pipes (8) are provided on one side of the support plate (7). The included angle between the two air pipes (8) is 90 degrees. A bottom pipe (19) is connected to the bottom of the air pipe (8). A connecting spring (25) is welded to the upper end of the bottom pipe (19). An inner tube (9) is welded to the upper end of the connecting spring (25). The air pipe (8) is connected to the sampling head (3) in an insert-type sealed connection through the inner tube (9). The first I-shaped shaft (12) is rotatably mounted inside the center of the support plate (7), and the upper end of the first I-shaped shaft (12) is provided with two connecting rods (13), the two ends of the connecting rods (13) being welded to the air pipe (8) and the first I-shaped shaft (12) respectively. An air pump carrier (14) is located below the support plate (7), and an air pump (15) is fixedly installed on the upper end of the air pump carrier (14) by screws. An air inlet pipe (17) and an air injection pipe (16) are respectively installed on the air inlet end and the air outlet end of the air pump (15). The air injection pipe (16) is internally inserted and sealed to the bottom pipe (19).

2. The dual-gas-path calibration structure of a portable greenhouse gas monitor according to claim 1, characterized in that: A threaded rod (23) is threaded through the internal screw hole of the support plate (7). A hanging shaft (22) is welded to the lower end of the threaded rod (23). A second I-shaped shaft (21) is rotatably connected inside the air pump carrier (14). The second I-shaped shaft (21) is welded to the lower end of the hanging shaft (22).

3. The dual-gas-path calibration structure of a portable greenhouse gas monitor according to claim 1, characterized in that: The outer wall of the air passage (8) is provided with a movable groove (10), and a handle block (11) is slidably provided inside the movable groove (10). The handle block (11) and the inner tube (9) are an integral structure.

4. The dual-gas-path calibration structure of a portable greenhouse gas monitor according to claim 1, characterized in that: An air intake end plate (18) is welded to one end of the air intake pipe (17), and an air filter plate (24) is fixed in the internal groove of the air intake end plate (18) by screws.

5. The dual-gas-path calibration structure of a portable greenhouse gas monitor according to claim 1, characterized in that: A handheld connecting rod (6) is provided between the carrier plate (7) and the greenhouse gas monitor (1), and the two ends of the handheld connecting rod (6) are welded to the carrier plate (7) and the greenhouse gas monitor (1) respectively.

6. The dual-gas-path calibration structure of a portable greenhouse gas monitor according to claim 1, characterized in that: A sealing ring (20) is provided at the lower end of the bottom tube (19), and the sealing ring (20) is fixedly connected to the bottom tube (19) by nail-free adhesive.

7. The dual-gas-path calibration structure of a portable greenhouse gas monitor according to claim 1, characterized in that: An exhaust pipe (4) is connected to one side of the outer wall of the sampling head (3), and an exhaust valve (5) is provided on the exhaust pipe (4).

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