A high-altitude gas sampling device

Abstract

This application discloses an upper-air gas sampling device, belonging to the field of environmental monitoring technology. The device includes a sampling container with a cavity inside. A collection port is located at the top of the container, and a connection port is located at the bottom. Both the collection port and the connection port communicate with the cavity. A first one-way valve is installed inside the collection port. A sampling balloon is placed inside the cavity. The air inlet of the sampling balloon extends to the outside through the connection port. A connecting tube is inserted into the air inlet of the sampling balloon, with one end of the connecting tube connected to the connection port and the other end fitted with an electrically controlled valve. By remotely controlling the opening of the electrically controlled valve, air inside the sampling balloon is expelled and the balloon contracts, creating a negative pressure inside the sampling container. External air can then enter the sampling container through the first one-way valve, completing the sampling operation.

Description

Technical Field

[0001] This application relates to the field of environmental monitoring technology, and more specifically, to an upper-air gas sampling device. Background Technology

[0002] Upper-air gas composition analysis is of paramount importance to meteorology, environmental science, atmospheric chemistry, and aerospace. By collecting and analyzing upper-air gas data, we can study many aspects of the atmosphere, including its chemical composition, pollutant transport, climate change, and upper-air meteorological conditions.

[0003] A search revealed that Chinese patent CN107764606A discloses a gas sampling device for atmospheric monitoring. This device uses a balloon to raise the gas collection unit to a high altitude, collecting the gas at high altitude, thereby enabling the detection of the upper atmosphere. Collecting air from the upper atmosphere via a balloon reduces the cost of gas collection and allows for random sampling, ensuring the quality of the detection.

[0004] The aforementioned device uses an air pump and an air outlet pipe to store air into a collection balloon. Because the collection balloon is directly exposed to the outside, it is easily damaged by contact with sharp objects during sampling. Therefore, we propose an upper-air gas sampling device. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] The purpose of this application is to provide a high-altitude gas sampling device to solve the problems mentioned in the background art.

[0007] 2. Technical Solution

[0008] This application is achieved through the following technical solution:

[0009] A high-altitude gas sampling device includes a sampling container with a cavity inside. The sampling container has a collection port at its upper part and a connection port at its lower part. Both the collection port and the connection port are connected to the cavity. A first one-way valve is provided inside the collection port. A collection balloon is provided inside the cavity. The air inlet of the collection balloon extends to the outside through the connection port. A connecting tube is inserted into the air inlet of the collection balloon. One end of the connecting tube is inserted into the connection port, and the other end is equipped with an electrically controlled valve.

[0010] As an optional solution to the technical solution of this application, the connecting pipe is provided with an air injection port, and a second one-way valve is provided inside the air injection port.

[0011] As an optional solution to the technical solution of this application, the connecting pipe is also provided with a pressure relief port, and a pressure relief valve is provided inside the pressure relief port.

[0012] As an optional solution to the technical solution of this application, the first one-way valve includes a valve plate and an elastic element, wherein one end of the elastic element is connected and fixed to the fixed valve plate, and the other end is connected and fixed to the sampling tank.

[0013] As an optional solution to the technical solution of this application, a nut is threadedly connected to the outside of the collection port. The nut is arranged in the shape of a filter screen, and a pin is fixedly connected to one side of the nut, with the pin extending into the collection port.

[0014] As an optional solution to the technical solution in this application, the sampling tank consists of an upper tank and a lower tank, which are threadedly connected.

[0015] As an optional solution to the technical solution in this application, both ends of the sampling container are tapered.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, the beneficial effects of this application are:

[0018] 1. By placing the collection balloon inside the sampling container, this application avoids the problem of air leakage caused by the collection balloon being exposed to the outside and coming into contact with sharp external objects.

[0019] 2. This application utilizes the elastic deformation capability of the sampling balloon to cause the internal cavity of the sampling tank to contract, thereby drawing external air into the internal cavity of the sampling tank. This eliminates the need for an air pump, reducing the manufacturing cost of the device and effectively reducing its weight, which is more conducive to sampling high-altitude gases. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a high-altitude gas sampling device;

[0021] Figure 2 This is a schematic diagram of the internal structure of a high-altitude gas sampling device.

[0022] Figure 3 This is an enlarged schematic diagram of the structure at point A of a high-altitude gas sampling device;

[0023] Figure 4 This is a schematic diagram of the connecting pipe structure of a high-altitude gas sampling device.

[0024] In the diagram: 1. Sampling container; 101. Collection port; 102. Connection port; 2. First check valve; 201. Valve plate; 202. Elastic element; 3. Collection balloon; 4. Connecting pipe; 401. Air injection port; 402. Pressure relief port; 5. Electrically controlled valve; 6. Second check valve; 7. Pressure relief valve; 8. Nut; 801. Pin. Detailed Implementation

[0025] The technical solution of this application will now be clearly and completely described in conjunction with the accompanying drawings.

[0026] Please see Figure 1 and Figure 2 This application provides a technical solution:

[0027] A high-altitude gas sampling device includes a sampling container 1 with a cavity inside. The sampling container 1 has a collection port 101 at the top and a connection port 102 at the bottom. Both the collection port 101 and the connection port 102 are connected to the cavity. A first one-way valve 2 is provided inside the collection port 101. A sampling balloon 3 is provided inside the cavity. The air inlet of the sampling balloon 3 extends to the outside through the connection port 102. A connecting pipe 4 is inserted into the air inlet of the sampling balloon 3. One end of the connecting pipe 4 is inserted into the connection port 102, and the other end is equipped with an electric control valve 5.

[0028] When using this device, the first one-way valve 2 is opened, and air is injected into the sampling balloon 3 through the connecting pipe 4, causing the sampling balloon 3 to expand inside the sampling container 1, squeezing out the gas in the cavity through the sampling port 101; the sampling container 1 is then suspended to a designated height using a hydrogen balloon, and the remotely controlled electric valve 5 is opened, allowing the air inside the sampling balloon 3 to be discharged outwards, causing it to contract and creating a negative pressure inside the sampling container 1, allowing external air to enter the sampling container 1 through the first one-way valve 2, thus completing the sampling operation.

[0029] like Figure 4 As shown, the connecting pipe 4 has an air injection port 401, and a second one-way valve 6 is installed inside the air injection port 401. The connecting pipe 4 also has a pressure relief port 402, and a pressure relief valve 7 is installed inside the pressure relief port 402. The user can inject air into the connecting pipe 4 through the air injection port 401, so that the sampling balloon 3 can expand outward and expel the gas inside the sampling container 1. The pressure relief valve 7 can control the internal pressure of the sampling balloon 3 to prevent the sampling balloon 3 from rupturing due to excessive internal pressure.

[0030] like Figure 3As shown, the first one-way valve 2 includes a valve plate 201 and an elastic element 202. One end of the elastic element 202 is fixedly connected to the fixed valve plate 201, and the other end is fixedly connected to the sampling container 1. A nut 8 is threadedly connected to the outside of the collection port 101. The nut 8 is arranged in the shape of a filter screen. A pin 801 is fixedly connected to one side of the nut 8, extending into the collection port 101. When air is injected into the collection balloon 3, rotating the nut 8 allows the pin 801 to move towards the valve plate 201, pushing the valve plate 201 to compress the elastic element 202, opening the collection port 101, allowing the air inside the sampling container 1 to be discharged outward through the collection port 101. After the collection balloon 3 has fully inflated, rotating the nut 8 in the opposite direction allows the valve plate 201 to one-way seal the collection port 101.

[0031] Preferably, the sampling container 1 consists of an upper container and a lower container, which are threaded together; this facilitates cleaning the inside of the sampling container 1; at the same time, both ends of the sampling container 1 are tapered, which helps the collection balloon 3 to squeeze the gas in the cavity outward.

Claims

1. A high-altitude gas sampling device, characterized in that: The sample includes a sampling container (1), which has a cavity. The upper part of the sampling container (1) has a collection port (101), and the lower part of the sampling container (1) has a connection port (102). The collection port (101) and the connection port (102) are both connected to the cavity. The collection port (101) has a first one-way valve (2). The cavity has a collection balloon (3). The air inlet of the collection balloon (3) extends to the outside through the connection port (102). The air inlet of the collection balloon (3) is connected to a connecting pipe (4). One end of the connecting pipe (4) is connected to the connection port (102), and the other end is equipped with an electric control valve (5).

2. The high-altitude gas sampling device according to claim 1, characterized in that: The connecting pipe (4) is provided with an air injection port (401), and a second one-way valve (6) is provided inside the air injection port (401).

3. The high-altitude gas sampling device according to claim 1, characterized in that: The connecting pipe (4) is also provided with a pressure relief port (402), and a pressure relief valve (7) is provided in the pressure relief port (402).

4. The high-altitude gas sampling device according to claim 1, characterized in that: The first one-way valve (2) includes a valve plate (201) and an elastic element (202). One end of the elastic element (202) is fixedly connected to the fixed valve plate (201), and the other end is fixedly connected to the sampling tank (1).

5. The high-altitude gas sampling device according to claim 4, characterized in that: A nut (8) is threadedly connected to the outside of the collection port (101). The nut (8) is arranged in the shape of a filter screen. A pin (801) is fixedly connected to one side of the nut (8) and extends into the collection port (101).

6. The high-altitude gas sampling device according to claim 1, characterized in that: The sampling container (1) consists of an upper container and a lower container, which are threadedly connected.

7. The high-altitude gas sampling device according to claim 1, characterized in that: The sampling container (1) is tapered at both ends.

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