High-altitude gas sampling preposed device

Abstract

The utility model discloses a high-altitude gas sampling preposed device, relates to the technical field of air sampling, and is used for solving the problem that air is easily condensed into water mist when being sampled by existing high-altitude sampling equipment. Comprising an air inlet, a drying cylinder, a heating cylinder and a switch valve which are arranged in sequence, the air inlet is of a hollow structure with two open ends, air enters from one end of the air inlet, the other end of the air inlet is connected with the drying cylinder, drying agents are arranged in the drying cylinder, and heating wires are arranged in the heating cylinder. An adjusting assembly for adjusting opening, closing and communication is arranged in the switch valve, one end of the switch valve is connected with the heating cylinder, and the other end of the switch valve is used for being connected with a gas collecting device. Air entering through the air inlet is dried through the arrangement of the drying cylinder, air flowing through the heating cylinder is heated through the arrangement of the heating cylinder, and therefore the situation that the air is condensed into water mist due to the temperature difference is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of air sampling, in particular to a high altitude gas sampling pre-position device. Background Art

[0002] Sampling high-altitude gas is helpful to understand the pollutants present in high-altitude air. Chinese patent CN213875155U discloses an unmanned aircraft-borne full-air sampling device, including a fuselage, a fuselage arm is provided on the side walls around the fuselage, a propeller is provided on the fuselage arm, the propeller is connected to a drive motor, a lithium battery pack, an image transmission and control module and a flight control system are provided in the fuselage, a base bracket and a support frame are provided at the bottom of the fuselage, a three-way solenoid valve and a Suma tank are provided on the base bracket, the inlet and outlet of the three-way solenoid valve are connected with an air pipe, and another pipe outlet of the three-way solenoid valve is connected to the Suma tank, a step-down module is provided at the bottom of the fuselage, the input end of the step-down module is electrically connected to the lithium battery pack, and the output end of the step-down module is electrically connected to the air pump and the three-way solenoid valve, a round tube and a camera are provided on the side of the fuselage, an air pipe is provided in the round tube, and the two ends of the air pipe are respectively connected to the air pump and the particulate filter, the air pump is connected to the metering valve, and the metering valve is connected to the air inlet of the first three-way solenoid valve. The utility model provides an unmanned aircraft-borne full-air sampling device that can be used for high-altitude air sampling. The defects of the above patent application are: [l1] Due to the high humidity at high altitudes, the sampler is prone to water accumulation and is not suitable for collecting gas samples at high altitudes. This is because the acidic gases (such as carbon dioxide and sulfur dioxide) at high altitudes have high concentrations and are easily soluble in water when the humidity is high. This will not only corrode the instrument, but also affect the efficiency of gas collection and interfere with the composition of the collected gas. Therefore, it cannot be used for gas collection, which will cause changes in the concentration and composition of the collected gas, affecting the objectivity and accuracy of the results. Utility Model Content

[0003] The utility model aims to provide a high-altitude gas sampling pre-device, which is used to solve the problem that the existing high-altitude sampling equipment is prone to water accumulation, and when sampling acidic gas, the acidic gas is easily soluble in water due to its high humidity and interferes with the concentration and composition of the collected gas.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a high-altitude gas sampling pre-device, including an air inlet, a drying cylinder, a heating cylinder and a switch valve arranged in sequence, the air inlet is a hollow structure with two ends open, air enters from one end of the air inlet, the other end of the air inlet is connected to the drying cylinder, the drying cylinder has a desiccant, the heating cylinder has a heating wire, the switch valve has an adjustment component for adjusting the opening and closing and the size of the connection, one end of the switch valve is connected to the heating cylinder, and the other end of the switch valve is used to connect to the gas collecting device.

[0005] Furthermore, the air inlet is a conical structure with one end being large and the other end being small, a sealing cover is detachably mounted on one end of the air inlet, and the other end of the air inlet is connected to the drying cylinder.

[0006] Furthermore, a filter screen is provided inside the air inlet.

[0007] Furthermore, the drying cylinder has an inner cylinder, the inner cylinder has a baffle ring, the baffle ring includes a frame located on all sides and two air inlet nets located on the inner side of the frame, and the desiccant is located between the two air inlet nets.

[0008] Furthermore, the retaining ring includes an upper retaining ring and a lower retaining ring. When installed, the drying cylinder is placed horizontally, the upper retaining ring is fixed to the upper inner wall of the inner cylinder, the lower retaining ring is fixed to the lower inner wall of the inner cylinder, and the bottom of the upper retaining ring is higher than the top of the lower retaining ring.

[0009] Furthermore, the upper retaining rings and the lower retaining rings are both arranged in multiple numbers at equal intervals, and the upper retaining rings and the lower retaining rings are arranged in such a manner that a maze structure is formed inside the inner cylinder.

[0010] Furthermore, the upper retaining ring and the lower retaining ring are both D-shaped structures, the inner wall of the inner cylinder has a slot, and the outer walls of the upper retaining ring and the lower retaining ring have an insert block, and the insert block is inserted into the slot.

[0011] Furthermore, the switch valve includes a valve body, and the adjusting component includes a fixed plate, a movable plate and a driving mechanism. The fixed plate is fixed inside the valve body, and the fixed plate has first air holes evenly arranged along the circumferential direction. The movable plate is rotatably installed inside the valve body and contacts with the end surface of the fixed plate. The movable plate has second air holes evenly arranged along the circumferential direction. The driving mechanism is arranged on the valve body to drive the movable plate to rotate around its own axis, and the switch valve is opened when the first air hole is connected to the second air hole, and the switch valve is closed when the first air hole is staggered with the second air hole, and the larger the connecting area between the first air hole and the second air hole, the greater the degree of opening of the switch valve.

[0012] Furthermore, the driving mechanism includes a motor and a gear, the motor is fixed to the outer wall of the valve body, the gear is fixed to the output end of the motor, the inner wall of the valve body has a support ring, the movable plate is rotatably installed in the support ring, the valve body and the side wall of the support ring have through holes, and the gear passes through the through hole and engages with the teeth of the outer wall of the movable plate.

[0013] Furthermore, the other end of the switch valve has a flange.

[0014] The beneficial effects of the utility model are as follows: the utility model dries the air entering through the air inlet by setting the drying cylinder, and heats the air flowing through the heating cylinder by setting the heating cylinder, so as to avoid condensation of the air into water mist due to temperature difference. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is the front view of the utility model;

[0017] Figure 3 for Figure 2 AA section view in;

[0018] Figure 4 It is the right side view of the air inlet;

[0019] Figure 5 It is the right view of the drying cylinder;

[0020] Figure 6 This is a schematic diagram of the gas flow in the drying cylinder;

[0021] Figure 7 It is the right side view of the switch valve;

[0022] Figure 8 It is the right side view of the fixed plate and the movable plate;

[0023] Fig. 9 It is the left view of the fixed plate and the movable plate;

[0024] Fig.10 It is the left view of the movable plate rotating relative to the fixed plate;

[0025] Fig.11 It is a schematic diagram of the flow of high-altitude air inside the utility model;

[0026] In the figure: 1 air inlet, 11 first mounting ring, 12 second mounting ring, 13 filter screen, 2 sealing cover, 3 drying cylinder, 31 inner cylinder, 32 upper baffle ring, 33 lower baffle ring, 34 desiccant, 35 air inlet net, 36 plug block, 4 heating cylinder, 41 third mounting ring, 42 fourth mounting ring, 43 heating wire, 5 valve body, 51 flange, 52 fixed plate, 53 first air hole, 54 support ring, 55 movable plate, 56 second air hole, 57 through hole, 58 gear cover, 6 motor, 61 gear. DETAILED DESCRIPTION

[0027] like Figures 1 to 11 As shown, the utility model includes an air inlet 1, a drying cylinder 3, a heating cylinder 4 and a switch valve. The utility model is described in detail below in conjunction with the accompanying drawings.

[0028] like Figure 1 , Figure 2As shown, the high-altitude gas sampling pre-device includes an air inlet 1, a drying cylinder 3, a heating cylinder 4 and a switch valve which are arranged in sequence. The air inlet 1 is a hollow structure with two ends open, and the air inlet 1 is a conical structure with one end large and the other end small. One end of the air inlet 1 has a first mounting ring 11, and the other end of the air inlet 1 has a second mounting ring 12. A sealing cover 2 is threadedly mounted on the first mounting ring 11, and the sealing cover 2 is used to seal the air inlet 1. When it is necessary to sample the air, the sealing cover 2 is removed to facilitate the entry of air. The second mounting ring 12 at the other end of the air inlet 1 is threadedly connected to the drying cylinder 3. As shown Figure 4 As shown, the air inlet 1 has a filter screen 13 inside, the edge of the filter screen 13 is a mounting portion with external threads, and the filter screen 13 is installed in the other end of the air inlet 1 in a threaded manner. Air enters from one end of the air inlet 1, and then passes through the filter screen 13 and enters the drying cylinder 3 from the other end of the air inlet 1. The filter screen 13 is provided to prevent foreign matter in the air from entering the drying cylinder 3.

[0029] like Figure 3 As shown, the drying cylinder 3 has a desiccant 34, which is used to dry the air entering the drying chamber 3 and reduce the air humidity. In order to slow down the movement speed of the air in the drying cylinder 3, prolong the contact time between the desiccant and the air, and ensure the drying effect, as shown in FIG. Figure 3 , Figure 5 As shown, the drying cylinder 3 has an inner cylinder 31, the outer wall of the inner cylinder 31 contacts the inner wall of the drying cylinder 3, and the inner cylinder 31 has a retaining ring, which includes a frame located on all sides and two air inlet nets 35 located on the inner side of the frame, and the desiccant 34 is located between the two air inlet nets 35. The retaining ring includes an upper retaining ring 32 and a lower retaining ring 33. When installed, the drying cylinder 3 is placed horizontally, the upper retaining ring 32 is fixed to the inner wall of the upper end of the inner cylinder 31, and the lower retaining ring 33 is fixed to the inner wall of the lower end of the inner cylinder 31. The bottom of the upper retaining ring 32 is higher than the top of the lower retaining ring 33. Both the upper retaining ring 32 and the lower retaining ring 33 are arranged in multiples at equal intervals, and a lower retaining ring 33 is provided between each two adjacent upper retaining plates 32, and an upper retaining ring 32 is provided between each two adjacent lower retaining rings 33. The arrangement of the upper retaining ring 32 and the lower retaining ring 33 forms a labyrinth structure inside the inner cylinder 31. The upper retaining ring 32 and the lower retaining ring 33 are both D-shaped structures. The inner wall of the inner cylinder 31 has a slot, and the outer walls of the upper retaining ring 32 and the lower retaining ring 33 have an insert block 36, which is inserted into the slot. During installation, align the insert block 36 with the slot and push the upper retaining ring 32 or the lower retaining ring 33 along the axial direction of the drying cylinder 3. During installation, the upper retaining ring 32 and the lower retaining ring 33 are installed alternately. Figure 6As shown, under the action of the labyrinth structure formed inside the inner cylinder 31, part of the air entering the drying cylinder 3 flows along the labyrinth structure, and the other part passes through the upper and lower baffle rings. After the air in the air inlet 1 enters the drying cylinder 3 through one end of the drying cylinder 3, it flows along the labyrinth structure or passes through the desiccant in the upper and lower baffle rings, and is dehumidified, and finally enters the heating cylinder 4 through the other end of the drying cylinder 3.

[0030] like Figure 3 As shown, the heating tube 4 has a heating wire 43, and the heating wire 43 is evenly arranged along the axial direction of the heating tube 4. The function of the heating wire 43 is to heat the air entering the heating tube 4 to prevent the air from condensing into water mist, and also play a certain drying role. One end of the heating tube 4 is a third mounting ring 41, and the other end of the heating tube 4 is a fourth mounting ring 42. The third mounting ring 41 has an external thread for threaded connection with the drying tube 3, and the fourth mounting ring 42 has an external thread for threaded connection with the switch valve.

[0031] like Figure 3 As shown, the switch valve has an adjustment component for adjusting the opening and closing and the connection size. One end of the switch valve is connected to the heating cylinder 4, and the other end of the switch valve is used to connect to the gas collecting device. Specifically, the switch valve includes a valve body 5, one end of the valve body 5 has an internal thread that is threadedly connected to the heating cylinder 4, and the other end of the valve body 5 has a flange 51. Figure 7 As shown, the regulating assembly includes a fixed plate 52, a movable plate 55 and a driving mechanism. The fixed plate 52 is fixed to the inner side of the valve body 5. The fixed plate 52 has first air holes 53 evenly arranged along the circumferential direction. The movable plate 55 is rotatably installed inside the valve body 5 and contacts the end surface of the fixed plate 52. Figure 8 , Fig. 9 As shown, the movable plate 55 has second air holes 56 uniformly arranged along the circumferential direction, and the end surface of the movable plate 55 contacts the end surface of the fixed plate 52, as shown in FIG. Figure 7 As shown, the driving mechanism is arranged on the valve body 5 to drive the movable plate 55 to rotate around its own axis, and as shown in FIG. Fig.10 As shown, when the first air hole 53 is connected to the second air hole 56, the switch valve is opened. Fig. 9 As shown, the switch valve is closed after the first air hole 53 and the second air hole 56 are staggered. The larger the communication area between the first air hole 53 and the second air hole 56, the greater the degree of opening of the switch valve. The driving mechanism includes a motor 6 and a gear 61. The motor 6 is fixed to the outer wall of the valve body 5. The gear 61 is fixed to the output end of the motor 6. The inner wall of the valve body 5 has a support ring 54. The movable plate 55 is rotatably installed in the support ring 54. Figure 7 As shown, the valve body 5 and the side wall of the support ring 54 have through holes 57, and the gear 61 passes through the through holes 57 and meshes with the teeth on the outer wall of the movable plate 55. When the gear 61 rotates, it drives the movable plate 55 to rotate, and at this time, the second air hole 56 moves relative to the first air hole 53.

[0032] The following describes the method of use of the utility model:

[0033] S1. Installation: Connect the flange to the air collecting device on the aircraft and remove the sealing cover;

[0034] S2, operate the fan to fly to a high altitude, and after reaching the designated sampling position, open the switch valve and energize the heating wire;

[0035] S3. Adjust the opening degree of the switch valve as needed to adjust the sampling volume; after sampling, close the switch valve.

[0036] The utility model dries the air entering through the air inlet by setting a drying cylinder, and heats the air flowing through the heating cylinder by setting a heating cylinder, so as to avoid the problem that the acidic gas in the high altitude is dissolved in water due to high humidity and is difficult to collect. The setting of the filter can prevent impurities from entering. The staggered upper baffle ring and the lower baffle ring form a maze structure inside the inner cylinder, thereby prolonging the time of air in the drying cylinder, thereby ensuring the drying effect.

Claims

1. High-altitude gas sampling pre-device, characterized in that: It includes an air inlet, a drying cylinder, a heating cylinder and a switch valve which are arranged in sequence. The air inlet is a hollow structure with two ends open. Air enters from one end of the air inlet. The other end of the air inlet is connected to the drying cylinder. The drying cylinder has a desiccant. The heating cylinder has a heating wire. The switch valve has an adjusting component for adjusting the opening and closing and the size of the connection. One end of the switch valve is connected to the heating cylinder, and the other end of the switch valve is used to connect to the air collecting device.

2. The high-altitude gas sampling pre-device according to claim 1, characterized in that: The air inlet is a conical structure with one end being large and the other end being small, and a sealing cover is detachably mounted on one end of the air inlet.

3. The high-altitude gas sampling pre-device according to claim 2, characterized in that: The air inlet is provided with a filter screen inside.

4. The high-altitude gas sampling pre-device according to claim 1, characterized in that: The drying cylinder has an inner cylinder, the inner cylinder has a baffle ring, the baffle ring comprises a frame located on all sides and two air inlet nets located on the inner side of the frame, and the desiccant is located between the two air inlet nets.

5. The high-altitude gas sampling pre-device according to claim 4, characterized in that: The retaining ring comprises an upper retaining ring and a lower retaining ring. When installed, the drying cylinder is placed horizontally, the upper retaining ring is fixed to the upper inner wall of the inner cylinder, the lower retaining ring is fixed to the lower inner wall of the inner cylinder, and the bottom of the upper retaining ring is higher than the top of the lower retaining ring.

6. The high-altitude gas sampling pre-device according to claim 5, characterized in that: The upper retaining rings and the lower retaining rings are both arranged in multiples at equal intervals, and the upper retaining rings and the lower retaining rings are arranged in such a manner that a maze structure is formed inside the inner cylinder.

7. The high-altitude gas sampling pre-device according to claim 6, characterized in that: The upper retaining ring and the lower retaining ring are both D-shaped structures, the inner wall of the inner cylinder is provided with a slot, and the outer walls of the upper retaining ring and the lower retaining ring are provided with an insert block, and the insert block is inserted into the slot.

8. The high-altitude gas sampling pre-device according to claim 1, characterized in that: The switch valve includes a valve body, and the regulating assembly includes a fixed plate, a movable plate and a driving mechanism. The fixed plate is fixed inside the valve body, and the fixed plate has first air holes evenly arranged along the circumferential direction. The movable plate is rotatably installed inside the valve body and contacts with the end surface of the fixed plate. The movable plate has second air holes evenly arranged along the circumferential direction. The driving mechanism is arranged on the valve body to drive the movable plate to rotate around its own axis, and the switch valve is opened when the first air hole is connected with the second air hole, and the switch valve is closed when the first air hole is staggered with the second air hole, and the larger the connecting area between the first air hole and the second air hole, the greater the degree of opening of the switch valve.

9. The high-altitude gas sampling pre-device according to claim 8, characterized in that: The driving mechanism includes a motor and a gear, the motor is fixed to the outer wall of the valve body, the gear is fixed to the output end of the motor, the inner wall of the valve body is provided with a support ring, the movable plate is rotatably installed in the support ring, the side walls of the valve body and the support ring are provided with through holes, and the gear meshes with the teeth of the outer wall of the movable plate after passing through the through holes.

10. The high-altitude gas sampling pre-device according to claim 1, characterized in that: The other end of the switch valve is provided with a flange.

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