Gas sampling device capable of automatic sampling at detection position

Abstract

The application relates to the technical field of gas sampling, and discloses a gas sampling device capable of automatically sampling at a detection position, which 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, a balloon inflating mechanism located in the box body and used for inflating the sampling balloon, and a gas sampling device located in the box body, wherein an input end of the gas sampling device is provided with a sampling pipeline, and the other end of the sampling pipeline is arranged outside the sampling balloon. The sampling balloon is arranged, in use, can be inflated to float in the air, and the gas sampling at different heights is realized by cooperation of the retraction and release of the sampling pipeline and the traction of the sampling balloon, so that the problem that the existing device cannot meet the sampling demand at different heights is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas sampling, in particular to a gas sampling device capable of automatic sampling at a detection position. BACKGROUND

[0002] With the aggravation of environmental pollution, people's environmental protection consciousness is forced to enhance, and environmental protection organizations all over the world pay more and more attention to sampling and detection of environmental air quality, especially sampling and detection of tail gas generated by industrial production to determine whether it meets the emission standard.

[0003] Patent No. CN209707204U discloses a gas sampling device, which comprises a device shell, a gas collection cavity is formed in the lower side of the device shell, a floating gas valve receiving cavity is formed in the upper part of the device shell, a gas inlet is formed in the right side wall of the device shell, a gas hole is formed in the middle of the floating gas valve, an arc-shaped groove is formed in the lower right side of the floating gas valve, and a sealing plate is hinged to the lower left side of the gas hole. When the staff uses the device, a plurality of devices can be connected in series before sampling, and then the gas inlet at the front end is aligned with the gas source to start the vacuum pump, so that multiple sample collection can be completed. The problem of wasting a lot of time to repeatedly replace the sample bottle by the staff is solved. At the same time, multiple sample collection of a single gas source can be completed through the opening and closing of the sampling gun and position calibration, the time for repeatedly calibrating the sampling gun is saved, and the sampling efficiency is improved.

[0004] The existing device uses a collection gun to sample gas, which can collect multiple samples at a time, but for current gas detection, the existing device cannot meet the sampling requirements at different heights. SUMMARY

[0005] The purpose of the present application is to solve the problems in the prior art and provide a gas sampling device capable of automatic sampling at a detection position.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0007] A gas sampling device capable of automatic sampling at a detection position, comprising a box body and a sampling balloon, wherein the box body is provided with:

[0008] A balloon placing seat is located at the top of the box body and used for storing the sampling balloon;

[0009] A balloon inflating mechanism is located in the box body and used for inflating the sampling balloon;

[0010] A gas sampling device is located in the box body, and an input end of the gas sampling device is provided with a sampling pipeline, and the other end of the sampling pipeline is arranged outside the sampling balloon;

[0011] A balloon traction device is arranged inside the box body and used for traction of the sampling balloon and control of 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 and used for air inlet of the sampling balloon, and a shaping ring assembly arranged outside the balloon, and the sampling pipeline is fixedly connected to the shaping ring assembly at the end away from the gas sampling device.

[0013] Preferably, the shaping ring assembly comprises a plurality of shaping ring bodies arranged at the upper half of the sampling balloon, and the outer diameters of the shaping ring bodies gradually increase from top to bottom, the outer side of the shaping ring body is designed in an arc shape, and the inner side is designed in a shape of convex first, concave second and vertical finally from the top to the lower side.

[0014] Preferably, the top of the balloon placing seat is provided with a receiving groove, the balloon inflating mechanism comprises a helium tank, an inflating pump in communication with the output end of the helium tank through a pipeline, and an air outlet pipeline in communication with the output end of the inflating pump through a pipeline, the output end of the air outlet pipeline is provided with an inflating nozzle, the inflating nozzle is matched with the air inlet nozzle, and the inflating nozzle is located at the bottom of the receiving groove.

[0015] Preferably, the receiving groove comprises two groove bodies in communication and in an inverted circular table shape, the size of the lower groove body is smaller than that of the upper groove body, and a guide roller assembly is arranged on both sides of the lower groove body.

[0016] Preferably, the gas sampling device comprises a rotary driving device arranged at one side of the box body, a turntable arranged at the driving end of the rotary driving device, a push rod motor arranged at one side of the turntable, a push plate arranged at the driving end of the push rod motor, a roller arranged at one side of the push plate, a positioning groove arranged at the outer side of the roller, a sampling container arranged in the positioning groove, a piston arranged in the sampling container, and a connecting rod connected to the piston, the end of the connecting rod is in a T shape, the push plate is located between the outer end of the connecting rod and the sampling container, a plurality of positioning pins are arranged in the positioning groove, a plurality of positioning holes are arranged on the surface of the sampling container, and the positioning pins are inserted into the positioning holes through friction.

[0017] Preferably, the balloon traction device comprises a rotary driving mechanism arranged in the box body, the roller is connected to the driving end of the rotary driving mechanism, the other end of the sampling container is provided with a winding wheel, one end of the sampling pipeline is fixedly connected to the winding wheel, and the sampling pipeline penetrates through the winding wheel and is in communication with the inner cavity of the sampling container.

[0018] Preferably, the positioning groove outside the roller and the sampling container are provided with a plurality of, and are arranged in a ring array outside the roller, and the plurality of sampling pipes are connected in a flat traction pipe in a clockwise direction or an anticlockwise direction through adjacent winding wheels, and the traction pipe is connected to the air inlet position of the sampling balloon through the receiving groove.

[0019] Preferably, the bottom of the receiving groove is rotatably provided with a rotating disc through a bearing, the traction pipe is movably penetrated through the rotating disc, the side of the traction pipe is provided with a plurality of grooves, and the two sides of the top of the rotating disc and the corresponding side of the groove are provided with distance measuring sensors.

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

[0021] Compared with the prior art, the gas sampling device has the following beneficial effects:

[0022] The sampling balloon is provided, and when in use, the sampling balloon can float in the air by being inflated, and the gas sampling at different heights can be realized by cooperation of the winding and unwinding of the sampling pipe and the traction of the sampling balloon, so that the problem that the prior art device cannot meet the sampling requirement at different heights is solved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A front view of a gas sampling device for achieving automatic sampling at a detection position is provided in the present application;

[0024] Figure 2 A front view of a gas sampling device for achieving automatic sampling at a detection position is provided in the present application; Figure 1 An enlarged schematic view of A is provided;

[0025] Figure 3 A side view of a roller of a gas sampling device for achieving automatic sampling at a detection position is provided in the present application;

[0026] Figure 4 A schematic view of a winding wheel and a sampling pipe in a pay-off state of a gas sampling device for achieving automatic sampling at a detection position is provided in the present application;

[0027] Figure 5 A side view of a traction pipe of a gas sampling device for achieving automatic sampling at a detection position is provided in the present application;

[0028] Figure 6 A schematic view of an end section of a traction pipe of a gas sampling device for achieving automatic sampling at a detection position is provided in the present application;

[0029] Figure 7A sampling balloon main body inflation state diagram of a gas sampling device capable of automatic sampling at a detection position according to the present application is provided;

[0030] Figure 8 A profile view of a shaping ring main body of a gas sampling device capable of automatic sampling at a detection position according to the present application is provided;

[0031] Figure 9 A plan view of a rotating disc of a gas sampling device capable of automatic sampling at a detection position according to the present application is provided.

[0032] In the figure: 1, box; 2, sampling balloon main body; 3, balloon placing seat; 4, sampling pipeline; 5, air inlet; 6, shaping ring main body; 7, storage groove; 8, helium tank; 9, inflation pump; 10, air outlet pipeline; 11, inflation nozzle; 12, guide roller assembly; 13, rotating driving device; 14, rotating table; 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, rotating disc; 26, groove; 27, distance measuring sensor; 28, rotating motor; 29, rotating wheel. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments.

[0034] Reference Figures 1-9 A gas sampling device capable of automatic sampling at a detection position, comprising a box 1 and a sampling balloon, wherein the box 1 is provided with:

[0035] A balloon placing seat 3 is located at the top of the box 1 and used for storing the sampling balloon;

[0036] A balloon inflation mechanism is located inside the box 1 and used for inflating the sampling balloon;

[0037] A gas sampling device is located inside the box 1, and an input end of the gas sampling device is provided with a sampling pipeline 4, and the other end of the sampling pipeline 4 is arranged outside the sampling balloon;

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

[0039] When the device is used, the sampling balloon is first inflated to float in the air, and the retraction and release of the sampling pipeline 4 and the traction of the sampling balloon are cooperated to realize the sampling of the gas at different heights, thereby solving the problem that the existing device cannot meet the sampling requirement 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 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, then concave, and finally transition to a vertical surface from the top to the inner side. This design facilitates stacking of multiple shaping ring bodies 6 together (the small-sized shaping ring body 6 is 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 without gas filling, the sampling balloon body 2 can be compressed, and the setting of the shaping ring assembly can limit its state when stacked and compressed, such as Figure 1 As shown, this not only facilitates the storage of the sampling balloon body 2, but also facilitates the automatic reset of the sampling balloon body 2 when it is pulled back into the storage groove 7. At the same time, due to the shape restriction, 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 receiving groove 7 includes two connected and inverted circular table-shaped groove bodies, the upper groove body is sized to fit the sizing ring assembly, facilitating the entry of the sizing ring assembly, and the lower groove body is smaller than the upper groove body, and the two sides of the lower groove body are each provided with a guide roller assembly 12, which is inclined downward from outside to inside. In order to facilitate the docking of the air inlet nozzle 5 and the inflation nozzle 11, the inflation nozzle 11 is located at the middle of the lower groove body, and the sampling pipeline 4 is connected to one side of the air inlet nozzle 5. In order to prevent the air inlet nozzle 5 and the inflation nozzle 11 from docking when the sampling balloon main body 2 is reset, the guide roller assembly 12 is designed, and the sampling pipeline 4 passes between the two guide roller assemblies 12. Even if it is not located at the center of the groove body, the air inlet nozzle 5 and the inflation nozzle 11 can still be docked. At the same time, it should be noted that the principle of the air inlet nozzle 5 and the inflation nozzle 11 can refer to the air valve. Of course, the pipeline can also be combined with the electromagnetic valve to control the opening and closing of the pipeline. 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 air intake to prevent gas leakage.

[0044] In this embodiment, the gas sampling device includes a rotary drive device 13 installed on one side of the box body 1, a turntable 14 installed on the driving end of the rotary 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 outer side of the roller 17, a sampling container 20 arranged in the positioning groove 18, a piston 21 in 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, and a plurality of positioning pins 19 are arranged in the positioning groove 18. The surface of the sampling container 20 is provided with a plurality of positioning holes, and the positioning pins 19 are inserted into the positioning holes through friction.

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

[0046] In the embodiment, the balloon traction device comprises a rotating drive mechanism arranged inside the box 1, the drum 17 is connected with the driving end of the rotating drive mechanism, the other end of the sampling container 20 is provided with a winding wheel 23, one end of the sampling pipeline 4 is fixedly connected on the winding wheel 23 and communicates with the inner cavity of the sampling container 20 through the winding wheel 23, the sampling pipeline 4 is designed in this way, which can be used for sampling on one hand and serving as a traction function on the other hand, so that the weight of the sampling balloon can be reduced, and the traction process is that the rotating drive mechanism rotates the drum 17 to realize the height control of the sampling balloon by winding the sampling pipeline 4, and the sampling pipeline 4 completes the transfer of the gas from the sampling pipeline 4 into the sampling container 20 through the winding wheel 23.

[0047] In the embodiment, the positioning grooves 18 outside the drum 17 and the sampling containers 20 are provided with a plurality of, for example, six in the embodiment, and are arranged in a ring shape outside the drum 17, as shown in Figure 3 and Figure 4 The sampling pipelines 4 are connected together in a flat traction pipeline 24 in the clockwise direction or the counterclockwise direction through the adjacent winding wheels 23, and are connected with the position of the gas inlet nozzle 5 of the sampling balloon (that is, the outer ends of the sampling pipelines 4 on each winding wheel 23 are connected together to form the traction pipeline 24, the traction pipeline 24 is connected to the gas inlet nozzle 5, and then is branched to be connected to the corresponding positions of the shaping ring, and a plurality of guide wheels can be arranged in the box 1 and the balloon placing seat 3 to guide the direction of the traction pipeline 24), and the purpose of the connection of the traction pipeline 24 is to further improve the stability of the result, and after the sampling balloon is released, the line will not be messy, and it needs to be noted that a certain length of the traction pipeline 24 needs to be reserved in the box 1, so that the sampling pipeline 4 outside can still be connected together after a long enough sampling pipeline 4 is released.

[0048] In the embodiment, the bottom of the receiving groove 7 is rotatably installed with a rotating disc 25 through a bearing, the traction pipeline 24 is movably penetrated through the rotating disc 25, the side of the traction pipeline 24 is provided with a plurality of grooves 26, and the two sides of the top of the rotating disc 25 and the corresponding side of the groove 26 are provided with distance measuring sensors 27. The design of the flat traction pipeline 24 has the above-mentioned effect and is also beneficial to the determination of the height of the sampling balloon. Therefore, the flat traction pipeline 24 is designed to be flat, and when it moves, the distance measuring sensors 27 can detect the rising height through the plurality of grooves 26 (when the distance measuring sensor 27 passes through the groove 26, a data signal change is generated). If the balloon is inclined, one of the distance measuring sensors 27 on the rotating disc 25 can detect the distance, so as to calculate the inclination angle, and the height positioning of the sampling balloon is completed in cooperation with the distance measuring sensor 27 on one side of the groove 26, which is beneficial to improving the precision of the sampling sample. The distance measuring sensor 27 can adopt an infrared or laser ranging mode and be used in cooperation with a control processor to control devices that can input electrical signals, such as the rotary drive device 13 and the push rod motor 15, so as to automatically complete the sampling of the sample when reaching the set height position, thereby improving the sampling efficiency.

[0049] In the embodiment, the rotating drive mechanism includes a rotating motor 28 and a rotating wheel 29 installed on one side of the rotating motor 28. The rotating 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 winding and unwinding of the sampling balloon. The manual rotating wheel 29 can be used for fine adjustment. It should be noted that the push rod motor 15 and the rotating motor 28 in the device are both rotated, and the angle of rotation is not greater than 360 degrees, i.e., the maximum rotation is only one circle, so as to avoid damage to the power supply line.

[0050] The device is suitable for various gas sampling scenes, such as being installed on an electric vehicle through a support to perform mobile sampling or being installed in a tunnel to perform fixed-point sampling. The material of the sampling pipeline 4 and the sampling balloon body 2 can be customized according to the sampling requirements (such as height), for example, for sampling at a higher position, the sampling pipeline 4 needs to use lightweight materials such as numerical materials, and the sampling balloon needs to be larger in size, which will not be described in detail here.

[0051] The above merely describes a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A gas sampling device that automatically samples gas upon reaching a detection position, characterized in that: It includes a box and a sampling balloon, and the box is provided with: The balloon holder is located on the top of the box and is used to store sampling balloons; The balloon inflation mechanism is located inside the box and is used to inflate the sampling balloon; The gas sampling device is located inside the box, with a sampling pipe provided at its input end and the other end of the sampling pipe provided 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; The sampling balloon comprises a sampling balloon body, an air inlet nozzle provided at the bottom of the sampling balloon body for air intake into the sampling balloon, and a shaping ring assembly provided on the outside of the balloon. The end of the sampling pipe away from the gas sampling device is installed on the shaping ring assembly. The gas sampling device includes a rotary drive device installed on one side of the interior of the box, a turntable installed on the driving end of the rotary 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 provided inside the positioning groove, a plurality of positioning holes are provided on the surface of the sampling container, and the positioning pins are plugged into the positioning holes through friction; The balloon pulling device includes a rotary drive mechanism disposed inside the box, the roller is connected to the driving end of the rotary drive mechanism, a winding wheel is installed at the other end of the sampling container, and 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; The drum is provided with a plurality of positioning grooves and sampling containers in a circular array on the outside of the drum. The plurality of sampling pipes are all arranged in a clockwise or counterclockwise direction, passing through adjacent winding wheels, and converged to form a flat traction pipe, which passes through the receiving groove and is connected to the air inlet position of the sampling balloon. A turntable is rotatably mounted on the bottom of the storage tank 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 distance measuring sensors are provided on both sides of the top of the turntable and on one side corresponding to the groove; Among them, the rotary drive device rotates the turntable and moves the push plate to one side of the corresponding connecting rod. At this time, the push rod motor pushes the push plate, controls the connecting rod to move horizontally, and controls the piston to move in the sampling container, thereby completing the gas suction.

2. A gas sampling device for automatically sampling upon reaching a detection position according to claim 1, characterized in that: The shaping ring assembly includes several shaping ring bodies, which are arranged in the upper half of the sampling balloon, and the outer diameters increase 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, then concave, and finally transition to a vertical surface from the top to the inner side.

3. The gas sampling device for automatically sampling upon reaching the detection position according to claim 2, 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 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. The output end of the air outlet pipeline is provided with an inflation nozzle, which is adapted to the air inlet nozzle and is located at the bottom of the storage groove.

4. The gas sampling device for automatically sampling upon reaching the detection position according to claim 3, characterized in that: The storage tank includes two interconnected, inverted truncated cone-shaped tank bodies, and the size of the lower tank body is smaller than that of the upper tank body. Guide roller assemblies are installed on both sides of the lower tank body, and the guide roller assemblies are inclined downward from the outside to the inside.

5. The gas sampling device for automatically sampling upon reaching the detection position according to claim 4, characterized in that: The rotary drive mechanism includes 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 through friction. The driving end of the rotary motor is connected to one side of the drum.

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