A gas quantitative sampling device

Abstract

The present invention provides a gas quantitative sampling device, which relates to the technical field of gas processing equipment, including a support platform; a recovery monitoring component, which is installed on one side of the support platform and is symmetrically distributed. The present invention has the following beneficial synergies: the present invention is provided with an air pump and an injection component, which is transported to the inside of a gas injection cylinder through a first connecting pipe for subsequent gas processing, and the gas is transported to an emergency brake through a second valve, and is discharged through a support frame fixing component, thereby achieving overall normal operation; the present invention is provided with a recovery monitoring component and a fixing component, and after detection by a gas quality sensor installed inside a telescopic slide, when the detected value exceeds a set value, an early warning is performed through a buzzer to avoid gas leakage, thereby ensuring the efficiency of subsequent gas processing, and avoiding different degrees of corrosion and damage to the equipment on the work site, thereby extending the overall service life.

Description

Technical Field

[0001] The invention relates to the technical field of gas processing equipment, and in particular to a gas quantitative sampling device. Background Art

[0002] Gas is a shapeless, volumetric, compressible and expandable fluid. Gas is a state of matter. Gas is a fluid like liquid: it can flow and deform. Unlike liquid, gas molecules are far apart and can be compressed and expanded. If there is no restriction (container or force field), gas can expand and its volume is unlimited. The atoms or molecules of gaseous substances can move freely with respect to each other. The kinetic energy of the atoms or molecules of gaseous substances is relatively high. The state of a gas can be affected by its volume, temperature and pressure. These factors constitute a number of gas laws, and the three can affect each other.

[0003] When processing the gas, a sampling operation is required.

[0004] In the prior art, no leak detection component is set after the gas is sampled, which may lead to gas leakage. On the one hand, it affects the normal processing of the gas, and on the other hand, it is easy to cause varying degrees of damage to the on-site equipment. At the same time, no quantitative air intake equipment is set, which may lead to the problem of excessive internal air pressure during detection, resulting in varying degrees of safety hazards and unable to meet the requirements of normal use. Therefore, the present invention needs to design a gas quantitative sampling device to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a gas quantitative sampling device to solve the problem mentioned in the above background technology that after the gas is sampled, no leak detection component is set, which may lead to gas leakage, which affects the normal processing of the gas and easily causes different degrees of damage to the on-site equipment. At the same time, no quantitative gas intake equipment is set, which easily leads to the problem of excessive internal gas pressure during detection, resulting in different degrees of safety hazards and failure to meet the requirements of normal use. In order to achieve the above technical features, the purpose of the present invention is achieved as follows:

[0006] A gas quantitative sampling device comprises a support platform, a recovery monitoring component, a fixing component and a gas sampling cylinder;

[0007] Two groups of support frames are symmetrically distributed on the top of the support platform, and a support side plate is installed on the top of each group of support frames. An air intake treatment box used in conjunction with a gas injection tube is fixedly connected to the adjacent sides of the two groups of support frames, and an injection assembly is installed inside the air intake treatment box. The injection assembly includes a filter inner bin and a delivery pipeline. The inside of the air intake treatment box is fixedly connected to a filter inner bin extending to the outside, and a gas density sensor is fixedly connected to one side of the filter inner bin, and delivery pipelines are fixedly connected to both sides of the gas density sensor;

[0008] The recycling monitoring assembly is installed on one side of the support platform and is symmetrically distributed. The recycling monitoring assembly includes a connecting plate and a mounting base plate. A symmetrically distributed connecting plate is installed on one side of the support platform, and the bottom of each connecting plate is fixedly connected to the mounting base plate.

[0009] The fixing component is installed at the bottom of the support platform and is used in conjunction with the recovery monitoring component;

[0010] The gas injection tube is installed on the top of the support platform and located on one side of the support frame. A first connecting pipe is installed between two gas injection tubes, and two pressure relief pipes are installed on one side of the first connecting pipe.

[0011] The fixing assembly includes a mounting frame and a supporting inclined plate. A symmetrically distributed mounting frame is installed at the bottom of the support platform and on one side of the mounting base plate. A connecting side plate is installed on the side of the mounting frame away from the mounting base plate. A supporting inclined plate is installed between the connecting side plate and the mounting frame. The bottom of the connecting side plate is threadedly connected with a first positioning bolt that is equidistantly distributed and extends to the bottom of the support platform. One side of the mounting frame is threadedly connected with a second positioning bolt that extends to the inside of the mounting base plate. A cavity is opened inside the mounting frame, and a second positioning bolt with the same structure and extending to the inside of the mounting base plate is installed inside the cavity.

[0012] A second pipe is installed between the filter inner chamber and the gas injection cylinder, a first pipe is installed between the air intake treatment box and the gas injection cylinder, the other end of the second pipe is connected to the first connecting pipe, the other end of the first pipe and the bottom of the support platform are fixedly connected with the second connecting pipe, and the bottom of the second connecting pipe is installed with symmetrically distributed air intake pipes.

[0013] A telescopic slide is installed on one side of the connecting plate away from the support platform, and the top of the telescopic slide is fixedly connected to symmetrically distributed gas recovery pipelines. A symmetrically distributed buzzer is fixedly connected to the top of the telescopic slide and located between the two gas recovery pipelines. Two flanges are sleeved on the outer side of the gas injection cylinder, and a limit seat is installed on the bottom of the gas injection cylinder. A gas quality sensor is installed inside the telescopic slide.

[0014] A positioning frame is installed at the bottom of the second pipe and below the support platform. The interior of the positioning frame is threadedly connected with a third positioning bolt that extends into the interior of the support platform and is symmetrically distributed. The interior of the positioning frame is threadedly connected with a third positioning bolt that extends into the interior of the limit seat and is symmetrically distributed.

[0015] Two reinforcement mounting plates are fixedly connected to the top of the support platform and located on the side of the second connecting pipe away from the gas injection tube. The tops of the reinforcement mounting plates are fixedly connected to air pumps, and the output ends of the air pumps are connected to the inside of the second connecting pipe.

[0016] A storage battery is installed inside the supporting side plate and on one side of the filtering inner compartment, and a first valve is fixedly connected to the outer side of the conveying pipeline.

[0017] A sealing top cover is installed on the top of the gas injection tube, two symmetrically distributed second valves are fixedly connected to the outer side of the first connecting pipe, and a third valve is installed on the outer side of the air intake pipe.

[0018] The bottom of the support platform is fixedly connected with support feet all around, and the bottom of the support feet is fixedly connected with an anti-skid base.

[0019] A control panel is fixedly connected to one side of one of the supporting side panels away from the air intake processing box, and the battery, gas density sensor, first valve, buzzer, air pump, second valve and third valve are all electrically connected to the control panel.

[0020] The present invention has the following beneficial effects:

[0021] 1. The present invention is provided with an air pump and an injection assembly. When in use, the control panel is opened, the third valve is opened, air is taken in through the air intake pipe, the air is transported to the inside of the first pipe through the second connecting pipe, the air is transported to the inside of the air intake treatment box through the first pipe, the first valve is opened, the air is recovered to the inside of the filter inner bin through the transport pipe, the transport amount is detected by the gas density sensor during the recycling, the intake amount is controlled during the injection, the air is transported to the inside of the first connecting pipe through the second pipe, the air is transported to the inside of the gas injection cylinder through the first connecting pipe, the subsequent gas treatment is carried out, the air is transported to the emergency brake through the second valve, and the air is discharged through the support frame fixing assembly, thereby realizing the normal operation of the whole;

[0022] 2. The present invention is provided with a recovery monitoring component and a fixing component. When installing and using, the connection plate is installed by aligning it with one side of the support platform, and the mounting frame is aligned with the bottom of the support platform and one side of the mounting base plate. The first positioning bolt is used to cooperate with the connecting side plate and the support platform for positioning and installation, and the second positioning bolt is used to cooperate with the mounting frame and the mounting base plate for positioning and installation. The stability of the equipment is improved by installing a supporting inclined plate, which is convenient for the installation and separation of the recovery monitoring component as a whole, and for normal maintenance, thereby reducing the intensity of manual labor. The gas at the work site is regularly recovered and processed through a gas recovery pipeline. After detection by a gas quality sensor installed inside the telescopic slide, when the detection value exceeds a set value, an early warning is performed through a buzzer to remind the staff to cooperate with the discharge in time, thereby avoiding gas leakage. This ensures the efficiency of subsequent gas processing, including various gas treatments, and performs different operations according to the needs of use. Since harmful gases are recovered, the contact time of harmful gases with on-site equipment is reduced, thereby avoiding different degrees of corrosion and damage to the equipment at the work site, and extending the overall service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 A structural front view of a gas quantitative sampling device provided by an embodiment of the present invention;

[0025] Figure 2 A side view of the overall structure of a gas quantitative sampling device provided by an embodiment of the present invention;

[0026] Figure 3 An enlarged view of the structure of the recycling monitoring component provided by an embodiment of the present invention;

[0027] Figure 4 An enlarged view of the structure of the fixing assembly provided in an embodiment of the present invention;

[0028] Figure 5 An enlarged diagram of the structure of the sample injection assembly provided in an embodiment of the present invention;

[0029] Figure 6 The embodiment of the present invention provides Figure 1 Middle A is a partial enlarged view;

[0030] Figure 7 The embodiment of the present invention provides Figure 1 A partial enlarged view of B.

[0031] In the figure:

[0032] 1. Support platform; 2. Support frame; 3. Support side panel;

[0033] 4. Recovery monitoring assembly; 41. Connection plate; 42. Telescopic slide plate; 43. Gas recovery pipeline; 44. Installation base plate;

[0034] 5. Fixing assembly; 51. Mounting frame; 52. Supporting inclined plate; 53. Connecting side plate; 54. First positioning bolt; 55. Second positioning bolt;

[0035] 6. Gas sampling tube; 7. First pipeline; 8. Second pipeline;

[0036] 9. Sampling assembly; 91. Filter inner chamber; 92. Battery; 93. Gas density sensor; 94. Delivery pipeline; 95. First valve;

[0037] 10. Positioning frame; 11. Third positioning bolt; 12. Support foot; 13. Anti-slip base; 14. Buzzer; 15. Reinforced mounting plate; 16. Air pump; 17. Air intake treatment box; 18. Sealed top cover; 19. Control panel; 20. First connecting pipe; 21. Second valve; 22. Second connecting pipe; 23. Air intake pipe; 24. Third valve; 25. Pressure relief pipe. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0039] See also Figure 1-7 , a gas quantitative sampling device, comprising a support platform 1, a recovery monitoring component 4, a fixing component 5, and a gas sampling cylinder 6;

[0040] Two groups of support frames 2 are symmetrically distributed on the top of the support platform 1, and a support side plate 3 is installed on the top of each group of support frames 2. An air intake treatment box 17 used in conjunction with a gas sampling tube 6 is fixedly connected to the adjacent side of the two groups of support frames 2. An injection assembly 9 is installed inside the air intake treatment box 17. The injection assembly 9 includes a filter inner bin 91 and a delivery pipeline 94. The inside of the air intake treatment box 17 is fixedly connected to a filter inner bin 91 extending to the outside, and a gas density sensor 93 is fixedly connected to one side of the filter inner bin 91, and both sides of the gas density sensor 93 are fixedly connected to a delivery pipeline 94;

[0041] The recovery monitoring assembly 4 is installed on one side of the support platform 1 and is symmetrically distributed. The recovery monitoring assembly 4 includes a connecting plate 41 and a mounting base plate 44. A symmetrically distributed connecting plate 41 is installed on one side of the support platform 1, and the bottom of the connecting plate 41 is fixedly connected to the mounting base plate 44;

[0042] The fixing component 5 is installed at the bottom of the supporting platform 1 and is used in conjunction with the recovery monitoring component 4;

[0043] The gas injection tube 6 is installed on the top of the support platform 1 and located on one side of the support frame 2 . A first connecting pipe 20 is installed between the two gas injection tubes 6 . Two pressure relief pipes 25 are installed on one side of the first connecting pipe 20 .

[0044] When the present invention is in use, the control panel 19 is opened, the air pump 16 is started, the third valve 24 is opened, the air intake process is performed during on-site operations through the air intake pipe 23, the air is transported to the inside of the first pipe 7 through the second connecting pipe 22, and then to the inside of the air intake process box 17 through the first pipe 7, the first valve 95 is opened, and the air is recovered to the inside of the filter inner bin 91 through the delivery pipe 94. During recovery, the delivery amount is detected by the gas density sensor 93, and the intake amount is controlled during sampling, and the air is transported to the inside of the first connecting pipe 20 through the second pipe 8, and then to the inside of the gas sampling tube 6 through the first connecting pipe 20 for subsequent gas treatment, and the gas is transported to the emergency brake through the second valve 21, and discharged through the support frame 2 fixing component 5, so as to achieve the normal operation of the whole, and the connecting plate 41 is aligned with one side of the support platform 1 for installation, and the mounting frame 51 is aligned with the bottom of the support platform 1 and the side of the mounting base plate 44, and the first positioning bolt 54 is used to cooperate The connecting side plate 53 is positioned and installed with the support platform 1, and the second positioning bolt 55 is used to cooperate with the mounting frame 51 and the mounting base plate 44 for positioning and installation. The stability of the equipment is improved by installing the supporting inclined plate 52, which facilitates the installation and separation of the recovery monitoring component 4 as a whole, and normal maintenance, thereby reducing the intensity of manual labor. The gas at the work site is regularly recovered and processed through the gas recovery pipeline 43. After detection by the gas quality sensor installed inside the telescopic slide 42, when the detection value exceeds the set value, an early warning is performed through the buzzer 14 to remind the staff to cooperate with the discharge in time, thereby avoiding gas leakage, which not only ensures the subsequent gas processing efficiency including various gas treatments, but also performs different operations according to the needs of use. Since the harmful gas is recovered, the contact time of the harmful gas with the on-site equipment is reduced, thereby avoiding different degrees of corrosion and damage to the equipment at the work site, and extending the overall service life.

[0045] For further information, see Figure 1-5The fixing assembly 5 includes a mounting frame 51 and a support inclined plate 52. The bottom of the support platform 1 and one side of the mounting base plate 44 are equipped with symmetrically distributed mounting frames 51. The side of the mounting frame 51 away from the mounting base plate 44 is equipped with a connecting side plate 53. The supporting inclined plate 52 is installed between the connecting side plate 53 and the mounting frame 51. The bottom of the connecting side plate 53 is threadedly connected with a first positioning bolt 54 that is equidistantly distributed and extends to the bottom of the support platform 1. One side of the mounting frame 51 is threadedly connected with a second positioning bolt 55 that extends to the inside of the mounting base plate 44. The inside of the mounting frame 51 has a cavity, and the inside of the cavity is equipped with a second positioning bolt 55 of the same structure that extends to the inside of the mounting base plate 44. Align the mounting frame 51 below the support platform 1 and one side of the mounting base plate 44, and use the first positioning bolt 54 to cooperate with the connecting side plate 53 and the support platform 1 for positioning and installation. Use the second positioning bolt 55 to cooperate with the mounting frame 51 and the mounting base plate 44 for positioning and installation. The stability of the equipment is improved by installing the support inclined plate 52.

[0046] For further information, see Figure 1 , Figure 2 , Figure 6 , Figure 7 A second pipe 8 is installed between the filter inner chamber 91 and the gas injection cylinder 6, a first pipe 7 is installed between the air intake treatment box 17 and the gas injection cylinder 6, the other end of the second pipe 8 is connected to the first connecting pipe 20, the other end of the first pipe 7 and the lower part of the support platform 1 are fixedly connected with the second connecting pipe 22, the bottom of the second connecting pipe 22 is installed with symmetrically distributed air intake pipes 23, the other end of the air intake pipe 23 is connected to the outside to cooperate with the air intake. The gas is transported to the inside of the first connecting pipe 20 through the second pipe 8, and then to the inside of the gas injection cylinder 6 through the first connecting pipe 20 for subsequent gas treatment, and the gas is transported to the emergency brake through the second valve 21, and discharged through the pressure relief pipe 25, so as to achieve the normal operation of the whole.

[0047] For further information, see Figure 1-4A telescopic slide 42 is installed on one side of the connecting plate 41 away from the support platform 1, and the top of the telescopic slide 42 is fixedly connected with symmetrically distributed gas recovery pipes 43, and the top of the telescopic slide 42 and between the two gas recovery pipes 43 are fixedly connected with symmetrically distributed buzzers 14, the outer side of the gas injection tube 6 is sleeved with two flanges, and the bottom of the gas injection tube 6 is installed with a limit seat, and a gas quality sensor is installed inside the telescopic slide 42. The corresponding sensor is replaced according to the gas required during detection to perform gas-assisted detection processing. During installation and use, the connecting plate 41 is installed by aligning it with one side of the support platform 1, and the mounting frame 51 is aligned with the bottom of the support platform 1 and one side of the mounting base plate 44. The first positioning bolt 54 is used to cooperate with the connecting side plate 53 and the support platform 1 for positioning and installation. The second positioning bolt 55 is used to cooperate with the mounting frame 51 and the mounting base plate 44 for positioning and installation. The stability of the equipment is improved by installing the supporting inclined plate 52, which is convenient for the installation and separation of the recovery monitoring component 4 as a whole, and for normal maintenance, thereby reducing the intensity of manual labor. The gas at the work site is regularly recovered and processed through the gas recovery pipeline 43. After detection by the gas quality sensor installed inside the telescopic slide 42, when the detection value exceeds the set value, an early warning is performed through the buzzer 14 to remind the staff to cooperate with the discharge in time, thereby avoiding gas leakage. This not only ensures the efficiency of subsequent gas processing, including various gas treatments, but also performs different operations according to the needs of use. Since harmful gases are recovered, the contact time of harmful gases with on-site equipment is reduced, thereby avoiding different degrees of corrosion and damage to the equipment at the work site, and extending the overall service life.

[0048] For further information, see Figure 1-4 The bottom of the second pipe 8 and below the support platform 1 are both installed with a positioning frame 10, and the interior of the positioning frame 10 is threadedly connected with a third positioning bolt 11 extending to the interior of the support platform 1 and symmetrically distributed, and the interior of the positioning frame 10 is threadedly connected with a third positioning bolt 11 extending to the interior of the limit seat and symmetrically distributed. The present invention positions and installs the side plate 53 and the support platform 1 by cooperating with the first positioning bolt 54, and positions and installs the mounting frame 51 and the mounting bottom plate 44 by cooperating with the second positioning bolt 55, and improves the stability of the equipment by installing the support inclined plate 52.

[0049] For further information, see Figure 1 , Figure 2 , Figure 6 , Figure 7Two reinforcement mounting plates 15 are fixedly connected to the top of the support platform 1 and located on the side of the second connecting pipeline 22 away from the gas injection cylinder 6. The tops of the reinforcement mounting plates 15 are fixedly connected to the air pumps 16. The output end of the air pump 16 is connected to the inside of the second connecting pipeline 22. The present invention operates the air pump 16, opens the third valve 24, takes in air through the air intake pipeline 23, transports it to the inside of the first pipeline 7 through the second connecting pipeline 22, and transports it to the inside of the air intake treatment box 17 through the first pipeline 7.

[0050] For further information, see Figure 1 , Figure 2 , Figure 5 , Figure 6 A battery 92 is installed inside the supporting side plate 3 and on one side of the filter inner compartment 91 , and a first valve 95 is fixedly connected to the outside of the delivery pipeline 94 , and the battery 92 provides power supply for the equipment.

[0051] For further information, see Figure 1 , Figure 2 , Figure 7 The top of the gas injection tube 6 is equipped with a sealing cover 18, the outer side of the first connecting pipe 20 is fixedly connected with two symmetrically distributed second valves 21, and the outer side of the air inlet pipe 23 is equipped with a third valve 24. The sealing cover 18 is used for sealing.

[0052] For further information, see Figure 1 , Figure 2 The bottom of the support platform 1 is fixedly connected with support feet 12 all around, and the bottom of the support feet 12 is fixedly connected with an anti-skid base 13.

[0053] Furthermore, a control panel 19 is fixedly connected to one side of one of the supporting side panels 3 away from the air intake processing box 17, and the battery 92, the gas density sensor 93, the first valve 95, the buzzer 14, the air pump 16, the second valve 21 and the third valve 24 are all electrically connected to the control panel 19. The battery 92, the gas density sensor 93, the first valve 95, the buzzer 14, the air pump 16, the second valve 21 and the third valve 24 are uniformly controlled and processed by the control panel 19, so that the normal operation of the whole is realized.

[0054] The sensor measures environmental parameters, converts them into signals and sends them to the controller. The controller receives and processes the signals and generates corresponding control signals according to the preset control algorithm. The control signals are transmitted to the actuator through the output module. The actuator converts the control signals into corresponding actions or adjustments to achieve control of the controlled object. At the same time, the sensor continuously provides feedback information to the controller, enabling the system to adjust and optimize the control strategy in real time.

Claims

1. A gas quantitative sampling device, characterized in that: It comprises a support platform (1), a recovery monitoring component (4), a fixing component (5), and a gas sampling cylinder (6); Two groups of support frames (2) are symmetrically distributed on the top of the support platform (1), and a support side plate (3) is installed on the top of each group of the support frames (2). An air intake treatment box (17) used in conjunction with a gas injection tube (6) is fixedly connected to the adjacent sides of the two groups of the support frames (2). An injection assembly (9) is installed inside the air intake treatment box (17), and the injection assembly (9) includes a filter inner chamber (91) and a delivery pipeline (94). The inside of the air intake treatment box (17) is fixedly connected to a filter inner chamber (91) extending to the outside, and a gas density sensor (93) is fixedly connected to one side of the filter inner chamber (91), and the two sides of the gas density sensor (93) are fixedly connected to the delivery pipeline (94); The recovery monitoring assembly (4) is installed on one side of the support platform (1) and is symmetrically distributed. The recovery monitoring assembly (4) includes a connecting plate (41) and a mounting base plate (44). The connecting plates (41) are symmetrically distributed and installed on one side of the support platform (1). The bottoms of the connecting plates (41) are fixedly connected to the mounting base plates (44). The fixing component (5) is installed at the bottom of the support platform (1) and is used in conjunction with the recovery monitoring component (4); The gas injection tube (6) is installed on the top of the support platform (1) and is located on one side of the support frame (2). A first connecting pipe (20) is installed between the two gas injection tubes (6), and two pressure relief pipes (25) are installed on one side of the first connecting pipe (20).

2. A gas quantitative sampling device according to claim 1, characterized in that: The fixing assembly (5) comprises a mounting frame (51) and a supporting inclined plate (52); the bottom of the support platform (1) and one side of the mounting base plate (44) are provided with symmetrically distributed mounting frames (51); the side of the mounting frames (51) away from the mounting base plate (44) are provided with connecting side plates (53); the supporting inclined plates (52) are provided between the connecting side plates (53) and the mounting frame (51); the bottom of the connecting side plates (53) are threadedly connected with first positioning bolts (54) which are equidistantly distributed and extend to the bottom of the support platform (1); one side of the mounting frame (51) is threadedly connected with second positioning bolts (55) which extend to the inside of the mounting base plate (44); a cavity is provided inside the mounting frame (51); a second positioning bolt (55) having the same structure and extending to the inside of the mounting base plate (44) is installed inside the cavity.

3. A gas quantitative sampling device according to claim 2, characterized in that: A second pipe (8) is installed between the filter inner chamber (91) and the gas injection tube (6), a first pipe (7) is installed between the air intake treatment box (17) and the gas injection tube (6), the other end of the second pipe (8) is connected to the first connecting pipe (20), the other end of the first pipe (7) and located below the support platform (1) is fixedly connected to a second connecting pipe (22), and symmetrically distributed air intake pipes (23) are installed at the bottom of the second connecting pipe (22).

4. A gas quantitative sampling device according to claim 3, characterized in that: A telescopic slide plate (42) is installed on one side of the connecting plate (41) away from the support platform (1); the top of the telescopic slide plate (42) is fixedly connected to symmetrically distributed gas recovery pipes (43); the top of the telescopic slide plate (42) and between the two gas recovery pipes (43) is fixedly connected to symmetrically distributed buzzers (14); the outer side of the gas injection tube (6) is sleeved with two flanges; the bottom of the gas injection tube (6) is installed with a limit seat; and the inside of the telescopic slide plate (42) is installed with a gas quality sensor.

5. A gas quantitative sampling device according to claim 4, characterized in that: A positioning frame (10) is installed at the bottom of the second pipe (8) and below the support platform (1), and the interior of the positioning frame (10) is threadedly connected to third positioning bolts (11) extending into the interior of the support platform (1) and symmetrically distributed, and the interior of the positioning frame (10) is threadedly connected to third positioning bolts (11) extending into the interior of the limit seat and symmetrically distributed.

6. A gas quantitative sampling device according to claim 5, characterized in that: Two reinforcement mounting plates (15) are fixedly connected to the top of the support platform (1) and located on the side of the second connecting pipe (22) away from the gas injection tube (6), and the tops of the reinforcement mounting plates (15) are fixedly connected to air pumps (16), and the output end of the air pump (16) is connected to the inside of the second connecting pipe (22).

7. A gas quantitative sampling device according to claim 6, characterized in that: A storage battery (92) is installed inside the supporting side plate (3) and on one side of the filtering inner compartment (91), and a first valve (95) is fixedly connected to the outside of the delivery pipeline (94).

8. A gas quantitative sampling device according to claim 7, characterized in that: A sealing top cover (18) is installed on the top of each gas injection tube (6), two symmetrically distributed second valves (21) are fixedly connected to the outside of each first connecting pipe (20), and a third valve (24) is installed on the outside of each air intake pipe (23).

9. A gas quantitative sampling device according to claim 8, characterized in that: The bottom of the support platform (1) is fixedly connected to support feet (12) on all sides, and the bottom of the support feet (12) is fixedly connected to an anti-slip base (13).

10. A gas quantitative sampling device according to claim 9, characterized in that: A control panel (19) is fixedly connected to one side of one of the supporting side panels (3) away from the air intake processing box (17); the battery (92), the gas density sensor (93), the first valve (95), the buzzer (14), the air pump (16), the second valve (21) and the third valve (24) are all electrically connected to the control panel (19).

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