Gas sampling device capable of achieving automatic sampling when reaching detection position

Abstract

The invention relates to the technical field of gas sampling, and discloses a gas sampling device capable of achieving automatic sampling when reaching a detection position, the gas sampling device comprises a box body and a sampling balloon, the box body is provided with: a balloon placing seat located at the top of the box body and used for storing the sampling balloon; the balloon inflating mechanism is positioned in the box body and is used for inflating the sampling balloon; the gas sampling device is located in the box body, a sampling pipeline is arranged at the input end of the gas sampling device, and the other end of the sampling pipeline is arranged on the outer side of the sampling balloon. By arranging the sampling balloon, during use, the sampling balloon can be inflated, so that the sampling balloon floats in the air, and gas at different heights can be sampled in cooperation with retraction and release of the sampling pipeline and traction of the sampling balloon, so that the problem that an existing device cannot meet the sampling requirements at different heights is solved.

Description

Technical Field

[0001] The invention relates to the technical field of gas sampling, and in particular to a gas sampling device capable of automatically sampling when reaching a detection position. Background Art

[0002] As environmental pollution worsens, people's environmental awareness is being forced to increase. Environmental protection organizations around the world are paying more and more attention to sampling and testing of ambient air quality, especially sampling and testing of exhaust gas generated by industrial production to determine whether it meets emission standards.

[0003] For example, patent No. CN209707204U discloses a gas sampling device, including a device shell, a gas collection chamber is opened on the lower side of the device shell, and a floating air valve storage chamber is opened on the upper part of the device shell, an air inlet is opened on the right side wall of the device shell, a vent is opened in the middle of the floating air valve, and an arc groove is opened on the lower right side of the floating air valve, and a sealing plate is hinged on the lower left side of the vent. When the staff uses the device, they can connect the required number of devices before sampling, and then align the front air inlet with the air source to start the vacuum pump to complete the collection of multiple side samples, which solves the problem that the staff has to waste a lot of time to repeatedly change the sample bottle. At the same time, multiple sample collection from a single gas source can be completed by switching the sampling gun and calibrating the position once, which saves the time of repeatedly calibrating the sampling gun and improves the sampling efficiency.

[0004] The existing device uses a sampling gun to sample gas. Although multiple samples can be collected at one time, for current gas detection, the existing device cannot meet the sampling requirements at different heights. Summary of the invention

[0005] The purpose of the present invention is to solve the problems existing in the prior art and to propose a gas sampling device which can automatically sample at a detection position.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A gas sampling device for automatically sampling at a detection position comprises a box and a sampling balloon, wherein the box is provided with:

[0008] A balloon placement seat, located on the top of the box, is used to store sampling balloons;

[0009] A balloon inflation mechanism, located inside the box, is used to inflate the sampling balloon;

[0010] The gas sampling device is located inside the box, and a sampling pipeline is arranged at its input end, and the other end of the sampling pipeline is arranged outside the sampling balloon;

[0011] The balloon traction device is located inside the box and is used to pull the sampling balloon and control the height of the sampling balloon.

[0012] Preferably, the sampling balloon comprises a sampling balloon body, an air inlet nozzle arranged at the bottom of the sampling balloon body for air intake into the sampling balloon, and a shaping ring assembly arranged on the outside of the balloon, and the end of the sampling pipe away from the gas sampling device is installed on the shaping ring assembly.

[0013] Preferably, the shaping ring assembly includes a plurality of shaping ring bodies, which are arranged in the upper half of the sampling balloon, and the outer diameter increases successively from top to bottom. The outer side of the shaping ring body is designed in an arc shape, and the inner side is designed to be convex first, then concave, and finally transition to a vertical surface from the top to the inner and lower side.

[0014] Preferably, a storage groove is provided on the top of the balloon placement seat, and the balloon inflation mechanism includes a helium tank, an air pump connected to the output end of the helium tank through a pipeline, and an air outlet pipeline connected to the output end of the air pump through a pipeline, and an inflation nozzle is provided at the output end of the air outlet pipeline, and the inflation nozzle is adapted to the air inlet nozzle, and the inflation nozzle is located at the bottom of the storage groove.

[0015] Preferably, the storage groove includes two interconnected inverted frustum-shaped groove bodies, and the size of the lower groove body is smaller than that of the upper groove body. Guide roller assemblies are installed on both sides of the lower groove body, and the guide roller assemblies are inclined downward from the outside to the inside.

[0016] Preferably, the gas sampling device includes a rotating drive device installed on one side of the interior of the box body, a turntable installed on the driving end of the rotating drive device, a push rod motor installed on one side of the turntable, a push plate installed on the driving end of the push rod motor, a roller located on one side of the push plate, a positioning groove opened on the outside of the roller, a sampling container arranged inside the positioning groove, a piston inside the sampling container and a connecting rod connected to the piston, the end of the connecting rod is T-shaped, the push plate is located between the outer end of the connecting rod and the sampling container, a plurality of positioning pins are arranged inside the positioning groove, a plurality of positioning holes are arranged on the surface of the sampling container, and the positioning pins are plugged into the positioning holes through friction.

[0017] Preferably, the balloon traction device includes a rotating drive mechanism arranged inside the box body, the roller is connected to the driving end of the rotating drive mechanism, a winding wheel is installed at the other end of the sampling container, one end of the sampling pipe is fixedly connected to the winding wheel, and passes through the winding wheel to communicate with the inner cavity of the sampling container.

[0018] Preferably, there are a plurality of positioning grooves and sampling containers on the outside of the drum, and they are arranged in a circular array on the outside of the drum. The plurality of sampling pipes are connected to form a flat traction pipe through adjacent winding wheels in a clockwise or counterclockwise direction, and pass through the storage groove and are connected to the air inlet position of the sampling balloon.

[0019] Preferably, a turntable is rotatably mounted on the bottom of the storage slot via a bearing, the traction pipe movably passes through the turntable, a plurality of grooves are opened on the side of the traction pipe, and ranging sensors are provided on both sides of the top of the turntable and one side corresponding to the grooves.

[0020] Preferably, the rotary drive mechanism comprises a rotary motor and a rotating wheel installed on one side of the rotary motor, the rotating wheel is rotatably connected to the side wall of the box body through friction, and the driving end of the rotary motor is connected to one side of the drum.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention, through the provision of a sampling balloon, can, when in use, inflate the sampling balloon to make it float in the air, and cooperate with the retraction and extension of the sampling pipeline and the traction of the sampling balloon to achieve gas sampling at different heights, thereby solving the problem that the existing device cannot meet the sampling needs at different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A front view of a gas sampling device for automatically sampling when reaching a detection position proposed by the present invention;

[0024] Figure 2 A gas sampling device for automatically sampling at a detection position proposed by the present invention Figure 1 A magnified schematic diagram;

[0025] Figure 3 A side view of a drum of a gas sampling device for automatically sampling when reaching a detection position proposed by the present invention;

[0026] Figure 4 A schematic diagram of the winding wheel and the sampling pipeline release state of a gas sampling device for automatically sampling at a detection position proposed by the present invention;

[0027] Figure 5 A side view of a traction pipeline of a gas sampling device for automatically sampling at a detection position proposed by the present invention;

[0028] Figure 6 A schematic cross-sectional view of the end of a traction pipe of a gas sampling device for automatically sampling at a detection position proposed by the present invention;

[0029] Figure 7A schematic diagram of a sampling balloon main body of a gas sampling device for automatically sampling at a detection position proposed by the present invention after being inflated;

[0030] Figure 8 A cross-sectional view of the main body of a shaped ring of a gas sampling device for automatically sampling at a detection position proposed by the present invention;

[0031] Fig. 9 A top view of a turntable of a gas sampling device for automatically sampling when reaching a detection position proposed by the present invention.

[0032] In the figure: 1. box body; 2. sampling balloon body; 3. balloon placement seat; 4. sampling pipeline; 5. air inlet nozzle; 6. shaping ring body; 7. storage slot; 8. helium tank; 9. air pump; 10. air outlet pipeline; 11. air nozzle; 12. guide roller assembly; 13. rotary drive device; 14. turntable; 15. push rod motor; 16. push plate; 17. roller; 18. positioning groove; 19. positioning pin; 20. sampling container; 21. piston; 22. connecting rod; 23. winding wheel; 24. traction pipeline; 25. turntable; 26. groove; 27. distance sensor; 28. rotating motor; 29. ​​rotating wheel. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] Reference Figure 1-Figure 9 A gas sampling device for automatically sampling at a detection position comprises a box 1 and a sampling balloon, wherein the box 1 is provided with:

[0035] A balloon placement seat 3, located on the top of the box 1, is used to store sampling balloons;

[0036] The balloon inflation mechanism is located inside the box 1 and is used to inflate the sampling balloon;

[0037] The gas sampling device is located inside the box 1, and a sampling pipe 4 is provided at its input end, and the other end of the sampling pipe 4 is provided outside the sampling balloon;

[0038] The balloon traction device is located inside the box 1 and is used to traction the sampling balloon and control the height of the sampling balloon.

[0039] When the device is in use, the sampling balloon is first inflated to make it float in the air, and the sampling pipe 4 is retracted and released and the sampling balloon is pulled to achieve gas sampling at different heights, solving the problem that existing devices cannot meet sampling needs at different heights.

[0040] In this embodiment, the sampling balloon includes a sampling balloon body 2, an air inlet nozzle 5 arranged at the bottom of the sampling balloon body 2 for air intake into the sampling balloon, and a shaping ring assembly arranged on the outside of the balloon. The end of the sampling pipe 4 away from the gas sampling device is installed on the shaping ring assembly, and the shaping ring can fix the position of the end of the sampling pipe 4 on the sampling balloon body 2.

[0041] In this embodiment, the shaping ring assembly includes a plurality of shaping ring bodies 6, and the plurality of shaping ring bodies 6 are arranged in the upper half of the sampling balloon, and the outer diameter increases successively from top to bottom. The outer side of the shaping ring body 6 is designed in an arc shape, and the inner side is designed to be convex from the top to the inner side and then concave, and finally transitions to a vertical surface. This design facilitates stacking of multiple shaping ring bodies 6 together (small-sized shaping ring bodies 6 are first guided by the convex part and then embedded in the concave part, and the vertical surface is mainly used to connect the sampling balloon body 2 material). In addition to fixing the end of the sampling pipe 4, when the sampling balloon body 2 is in a state of not being filled with gas, the sampling balloon body 2 can be compressed, and the setting of the shaping ring assembly can limit the state of its stacking and compression, such as Figure 1 As shown, this not only facilitates the storage of the sampling balloon body 2, but also facilitates the automatic resetting of the sampling balloon body 2 when it is pulled back into the storage groove 7. At the same time, since the shape is restricted, it is convenient to connect the air inlet nozzle 5 and the inflation nozzle 11. At the same time, in order to reuse the sampling balloon body 2, materials such as latex, polyethylene or nylon can be selected.

[0042] In this embodiment, a storage groove 7 is provided on the top of the balloon placement seat 3, and the balloon inflation mechanism includes a helium tank 8, an air pump 9 connected to the output end of the helium tank 8 through a pipeline, and an air outlet pipeline 10 connected to the output end of the air pump 9 through a pipeline. The output end of the air outlet pipeline 10 is provided with an inflation nozzle 11, and the inflation nozzle 11 is adapted to the air inlet nozzle 5. The inflation nozzle 11 is located at the bottom of the storage groove 7. The air pump 9 realizes the expansion and launch of the sampling balloon by filling the gas in the helium tank 8 into the air inlet nozzle 5 through the inflation nozzle 11 and the air outlet pipeline 10.

[0043] In this embodiment, the storage tank 7 includes two interconnected and inverted truncated cone-shaped tank bodies. The size of the upper tank body is adapted to the size of the shaping ring assembly to facilitate the entry of the shaping ring assembly, and the size of the lower tank body is smaller than that of the upper tank body. Guide roller assemblies 12 are installed on both sides of the lower tank body. The guide roller assemblies 12 are inclined downward from the outside to the inside. In order to facilitate the docking of the air inlet nozzle 5 and the inflation nozzle 11, the inflation nozzle 11 is located in the middle of the lower tank body, and the sampling pipe 4 is connected to one side of the air inlet nozzle 5. In order to prevent the sampling balloon body 2 from being reset, The air inlet nozzle 5 and the inflation nozzle 11 cannot be docked, so a guide roller assembly 12 is designed herein, and the sampling pipe 4 passes between the two guide roller assemblies 12. Even if it is not located at the center of the trough body, the air inlet nozzle 5 and the inflation nozzle 11 can still be docked. At the same time, it should be noted here that the principles of the air inlet nozzle 5 and the inflation nozzle 11 can refer to the valve nozzle. Of course, the opening and closing of the pipeline can also be controlled by combining a pipeline with an electromagnetic valve. The inflation nozzle 11 is mainly used to input gas into the sampling balloon, and the air inlet nozzle 5 is used to close the sampling balloon after intake to prevent gas leakage.

[0044] In this embodiment, the gas sampling device includes a rotating drive device 13 installed on one side of the interior of the box body 1, a turntable 14 installed on the driving end of the rotating drive device 13, a push rod motor 15 installed on one side of the turntable 14, a push plate 16 installed on the driving end of the push rod motor 15, a roller 17 located on one side of the push plate 16, a positioning groove 18 opened on the outside of the roller 17, a sampling container 20 arranged inside the positioning groove 18, a piston 21 inside the sampling container 20 and a connecting rod 22 connected to the piston 21, the sampling container 20 is tubular, the end of the connecting rod 22 is T-shaped, the push plate 16 is located between the outer end of the connecting rod 22 and the sampling container 20, a plurality of positioning pins 19 are arranged inside the positioning groove 18, a plurality of positioning holes are arranged on the surface of the sampling container 20, and the positioning pins 19 are plugged into the positioning holes through friction;

[0045] The working process of the gas sampling device is: first, the roller 17 is inserted into the positioning groove 18 through the positioning hole and the positioning pin 19. When sampling the gas, the rotary drive device 13 rotates the turntable 14 to move the push plate 16 to the side of the corresponding connecting rod 22. At this time, the push rod motor 15 pushes the push plate 16, controls the connecting rod 22 to move horizontally, and controls the piston 21 to move in the sampling container 20, thereby completing the gas suction and completing the gas sampling at the sampling gas position. In this embodiment, sampling is performed in this way to reduce the number of motors and suction pumps. In other embodiments, the sampling can be directly performed in a way that each suction pump corresponds to a sampling pipeline 4, and the gas is directly drawn into the closed sampling bottle through the sampling pipeline 4.

[0046] In this embodiment, the balloon traction device includes a rotating drive mechanism arranged inside the box body 1, the roller 17 is connected to the driving end of the rotating drive mechanism, and a winding wheel 23 is installed at the other end of the sampling container 20. One end of the sampling pipe 4 is fixedly connected to the winding wheel 23, and passes through the winding wheel 23 to communicate with the inner cavity of the sampling container 20. The sampling pipe 4 is designed in this way. On the one hand, it can be used for gas sampling, and on the other hand, it serves as a traction function, which can reduce the weight of the sampling balloon. The traction process is: the rotating drive mechanism rotates the roller 17, and the height control of the sampling balloon is achieved by winding the sampling pipe 4, etc. At the same time, the sampling pipe 4 completes the transfer of gas from the sampling pipe 4 into the sampling container 20 through the winding wheel 23.

[0047] In this embodiment, the positioning grooves 18 and the sampling containers 20 are provided on the outer side of the drum 17 in a plurality, for example, in this embodiment, six, and are arranged in a circular array on the outer side of the drum 17, such as Figure 3 and Figure 4 As shown, several of the sampling pipes 4 are converged and connected into a flat traction pipe 24 in a clockwise or counterclockwise direction, passing through adjacent winding wheels 23, and passing through the storage groove 7 and connected to the air inlet nozzle 5 of the sampling balloon (that is, the outer ends of the sampling pipes 4 on each winding wheel 23 are connected together to form a traction pipe 24. After the traction pipe 24 is connected to the air inlet nozzle 5, it is split and connected to the corresponding positions of the shaping ring. At the same time, a plurality of guide wheels can be arranged in the box body 1 and the balloon placement seat 3 to guide the direction of the traction pipe 24). The purpose of converging and connecting into a flat traction pipe 24 is to further improve the stability of the results. At the same time, after the sampling balloon is released, the line will not be messy. It should be noted here that a certain length of traction pipe 24 needs to be reserved in the box body 1, so that after releasing a sufficiently long sampling pipe 4, the sampling pipe 4 located outside is still in a connected state.

[0048] In this embodiment, a turntable 25 is rotatably mounted on the bottom of the storage tank 7 through a bearing, and the traction pipe 24 is movable through the turntable 25. A plurality of grooves 26 are provided on the side of the traction pipe 24. Both sides of the top of the turntable 25 and one side corresponding to the grooves 26 are provided with distance sensors 27. In addition to the above-mentioned effects, the design of the flat traction pipe 24 is also conducive to determining the height of the sampling balloon. Therefore, it is designed to be flat. When it moves, the distance sensor 27 can detect its rising height through the plurality of grooves 26 (the distance sensor 27 passes through the grooves). 26, a data signal change will be generated), and if the balloon is tilted, one of the distance measuring sensors 27 on the turntable 25 can detect the distance, thereby calculating its tilt angle, and cooperating with the distance measuring sensor 27 on one side of the groove 26 to complete the height positioning of the sampling balloon, which is beneficial to improve the accuracy of the sampled samples. The distance measuring sensor 27 can use infrared or laser ranging methods, and can be used in conjunction with the control processor to control the rotating drive device 13, the push rod motor 15 and other devices that can input electrical signals, so that when the set height position is reached, the sample sampling is automatically completed, thereby improving the sampling efficiency.

[0049] In this embodiment, the rotating drive mechanism includes a rotating motor 28 and a wheel 29 installed on one side of the rotating motor 28. The wheel 29 is rotatably connected to the side wall of the box body 1 through friction. The driving end of the rotating motor 28 is connected to one side of the drum 17. The rotating motor 28 can drive the drum 17 to facilitate the collection and release of the sampling balloon, and the manual wheel 29 can fine-tune it. It should be noted here that the push rod motor 15 and the rotating motor 28 in this device are both on the rotating side, and the rotation angle is not greater than 360 degrees, that is, it can only rotate once at most to avoid damage to the power supply line.

[0050] This device is suitable for various gas sampling scenarios. For example, it can be installed on an electric vehicle through a bracket for mobile sampling, or installed in a tunnel for fixed-point sampling. The materials of the sampling pipe 4 and the sampling balloon body 2 can be customized according to the sampling requirements (such as height). For example, for sampling at higher positions, the sampling pipe 4 needs to use lightweight materials, such as numerical materials, and the sampling balloon needs to be larger in size, which will not be elaborated here.

[0051] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A gas sampling device for automatically sampling at a detection position, characterized in that: It includes a box and a sampling balloon, and the box is provided with: A balloon placement seat, located on the top of the box, is used to store sampling balloons; A balloon inflation mechanism, located inside the box, is used to inflate the sampling balloon; The gas sampling device is located inside the box, and a sampling pipeline is arranged at its input end, and the other end of the sampling pipeline is arranged outside the sampling balloon; The balloon traction device is located inside the box and is used to pull the sampling balloon and control the height of the sampling balloon.

2. A gas sampling device for automatically sampling at a detection position according to claim 1, characterized in that: The sampling balloon comprises a sampling balloon body, an air inlet nozzle arranged at the bottom of the sampling balloon body for air intake into the sampling balloon, and a shaping ring assembly arranged outside the balloon. The end of the sampling pipeline away from the gas sampling device is installed on the shaping ring assembly.

3. A gas sampling device for automatically sampling at a detection position according to claim 2, characterized in that: The shaping ring assembly includes a plurality of shaping ring bodies, which are arranged in the upper half of the sampling balloon and have an outer diameter that increases from top to bottom. The outer side of the shaping ring body is in an arc-shaped design, and the inner side is in a design that is convex first, then concave, and finally transitions to a vertical surface from the top to the inner bottom.

4. A gas sampling device for automatically sampling at a detection position according to claim 3, characterized in that: A storage groove is provided on the top of the balloon placement seat, and the balloon inflation mechanism includes a helium tank, an inflation pump connected to the output end of the helium tank through a pipeline, and an air outlet pipeline connected to the output end of the inflation pump through a pipeline. An inflation nozzle is provided at the output end of the air outlet pipeline, and the inflation nozzle is adapted to the air inlet nozzle. The inflation nozzle is located at the bottom of the storage groove.

5. A gas sampling device for automatically sampling at a detection position according to claim 4, characterized in that: The storage groove includes two interconnected inverted truncated cone-shaped groove bodies, and the size of the lower groove body is smaller than that of the upper groove body. Guide roller assemblies are installed on both sides of the lower groove body, and the guide roller assemblies are inclined downward from the outside to the inside.

6. A gas sampling device for automatically sampling at a detection position according to claim 1, characterized in that: The gas sampling device includes a rotating drive device installed on one side of the interior of a box body, a turntable installed on the driving end of the rotating drive device, a push rod motor installed on one side of the turntable, a push plate installed on the driving end of the push rod motor, a roller located on one side of the push plate, a positioning groove opened on the outer side of the roller, a sampling container arranged inside the positioning groove, a piston inside the sampling container and a connecting rod connected to the piston, the end of the connecting rod is T-shaped, the push plate is located between the outer end of the connecting rod and the sampling container, a plurality of positioning pins are arranged inside the positioning groove, a plurality of positioning holes are arranged on the surface of the sampling container, and the positioning pins are plugged into the positioning holes through friction.

7. A gas sampling device for automatically sampling at a detection position according to claim 6, characterized in that: The balloon traction device includes a rotating drive mechanism arranged inside the box body, the roller is connected to the driving end of the rotating drive mechanism, a winding wheel is installed at the other end of the sampling container, one end of the sampling pipeline is fixedly connected to the winding wheel, and passes through the winding wheel to communicate with the inner cavity of the sampling container.

8. A gas sampling device for automatically sampling at a detection position according to claim 7, characterized in that: There are a number of positioning grooves and sampling containers on the outside of the drum, and they are arranged in a circular array on the outside of the drum. The sampling pipes are all connected to form a flat traction pipe through adjacent winding wheels in a clockwise or counterclockwise direction, and pass through the storage groove and are connected to the air inlet position of the sampling balloon.

9. A gas sampling device for automatically sampling at a detection position according to claim 8, characterized in that: A turntable is rotatably mounted on the bottom of the storage slot via a bearing, the traction pipe movably passes through the turntable, a plurality of grooves are provided on the side of the traction pipe, and ranging sensors are provided on both sides of the top of the turntable and on one side corresponding to the grooves.

10. A gas sampling device for automatically sampling at a detection position according to claim 7, characterized in that: The rotary drive mechanism comprises a rotary motor and a rotating wheel installed on one side of the rotary motor. The rotating wheel is rotatably connected to the side wall of the box body through friction force. The driving end of the rotary motor is connected to one side of the drum.

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