Portable sulfur-free odorant detection device

Abstract

The utility model belongs to the technical field of natural gas detection in analytical chemistry, and particularly relates to a portable sulfur-free odorant detection device which comprises a gas washing bottle, a bottle cap, a large-diameter connecting pipe, a reducer union and a small-diameter connecting pipe, a gas pipe connector and a gas outlet are respectively arranged on the top surface of the bottle cap, which is positioned on the outer side of the gas washing bottle; and a gas leading-out pipe and a gas leading-in pipe are respectively arranged on the bottle cap. The device is relatively simple in overall structure, relatively small and exquisite in size, convenient to directly carry to a site for detection, suitable for a relatively complex on-site working environment, simple to operate, capable of obtaining a relatively accurate detection result in a short time, capable of meeting the requirement for on-site rapid judgment and high in practicability. Compared with the traditional laboratory detection equipment, the sulfur-free odorant detection equipment has the advantages of lower manufacturing cost, easiness in popularization and application and good economic and social benefits, and can provide a powerful basis for timely adjustment and reasonable use of the sulfur-free odorant.

Description

Technical Field

[0001] This invention belongs to the field of natural gas detection technology in analytical chemistry, specifically a portable sulfur-free odorant detection device. Background Technology

[0002] Sulfur-free odorants play a crucial role in the transportation and use of gases such as natural gas, and the accuracy of their dosage directly affects the safety and reliability of gas use. Currently, the testing of sulfur-free odorants typically involves on-site sampling followed by complex procedures using specialized laboratory equipment. This process is not only time-consuming and labor-intensive but also fails to meet the need for rapid on-site testing. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this utility model is to provide a portable sulfur-free odorant detection device.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A portable sulfur-free odorant detection device includes a gas washing bottle, a bottle cap, a large-diameter connecting pipe, a reducing connector, and a small-diameter connecting pipe.

[0006] The reducing connector has a large-diameter open end and a small-diameter open end that are connected. One end of the large-diameter connecting pipe is used to connect to the natural gas pipeline to be tested. The other end of the large-diameter connecting pipe is connected to the large-diameter open end of the reducing connector. The small-diameter open end of the reducing connector is connected to one end of the small-diameter connecting pipe.

[0007] The gas washing bottle is made of transparent material, with a closed bottom and an open top. A cap is installed on the top opening of the gas washing bottle to seal it. The gas washing bottle contains a color indicator liquid. The top surface of the cap, located on the outer side of the gas washing bottle, has a gas tube connection port and a gas outlet. A gas outlet tube and a gas inlet tube are respectively provided on the portion of the cap that connects to the top opening of the gas washing bottle. One end of the gas outlet tube is connected to the gas outlet, and the other end is positioned above the surface of the color indicator liquid in the gas washing bottle. One end of the gas inlet tube is connected to the gas tube connection port, and the other end extends to the bottom of the inner cavity of the gas washing bottle and is positioned below the surface of the color indicator liquid.

[0008] The bottle cap, gas tube connection port, gas outlet, gas outlet tube, and gas inlet tube are integrated into one unit.

[0009] The tracheal connection port and the gas outlet port protrude from the top surface of the bottle cap, located on the outside of the gas washing bottle. The outer periphery of the tracheal connection port and the gas outlet port are respectively truncated cone-shaped, and the outer diameter of the tracheal connection port and the outer diameter of the gas outlet port gradually decrease from top to bottom.

[0010] The reducing joint adopts a pagoda joint.

[0011] Both the large-diameter connecting pipe and the small-diameter connecting pipe are flexible hoses, and the diameter of the large-diameter connecting pipe is larger than that of the small-diameter connecting pipe.

[0012] The bottle cap is connected to the top opening of the gas washing bottle by a thread.

[0013] The color indicator liquid is a potassium permanganate solution.

[0014] The advantages and positive effects of this utility model are as follows:

[0015] This utility model has a relatively simple overall structure and a relatively small size, making it convenient to carry directly to the field for testing. It is suitable for complex field working environments, is easy to operate, and can obtain relatively accurate test results in a short time, meeting the needs of rapid on-site judgment. It can provide a strong basis for the timely adjustment and rational use of sulfur-free odorants. Compared with traditional laboratory testing equipment, it has a lower manufacturing cost, is easy to promote and apply, and has good economic and social benefits. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] In the diagram: 1 is a gas washing bottle, 2 is a bottle cap, 201 is a gas tube connection port, 202 is a gas outlet, 203 is a gas outlet tube, 204 is a gas inlet tube, 3 is a large-diameter connecting tube, 4 is a reducing connector, 5 is a small-diameter connecting tube, and 6 is a color indicator liquid. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1 The present invention will be described in further detail.

[0019] A portable sulfur-free odorant detection device, such as Figure 1 As shown, this embodiment includes a gas washing bottle 1, a bottle cap 2, a large-diameter connecting pipe 3, a reducing connector 4, and a small-diameter connecting pipe 5.

[0020] The reducing connector 4 has a large-diameter open end and a small-diameter open end that are connected. One end of the large-diameter connecting pipe 3 is used to connect to the natural gas pipeline to be tested. The other end of the large-diameter connecting pipe 3 is connected to the large-diameter open end of the reducing connector 4. The small-diameter open end of the reducing connector 4 is connected to one end of the small-diameter connecting pipe 5.

[0021] The gas washing bottle 1 is made of a common transparent and corrosion-resistant material. The bottom of the gas washing bottle 1 is closed and the top is open. The bottle cap 2 is installed on the top opening of the gas washing bottle 1 and is used to seal the top opening of the gas washing bottle 1. The gas washing bottle 1 contains a color indicator liquid 6. The top surface of the bottle cap 2 on the outside of the gas washing bottle 1 is respectively provided with a gas tube connection port 201 and a gas outlet port 202. The part of the bottle cap 2 that connects to the top opening of the gas washing bottle 1 is respectively provided with a gas outlet tube 203 and a gas inlet tube 204. One end of the gas outlet tube 203 is connected to the gas outlet port 202, and the other end of the gas outlet tube 203 is located above the liquid surface of the color indicator liquid 6 in the gas washing bottle 1. One end of the gas inlet tube 204 is connected to the gas tube connection port 201, and the other end of the gas inlet tube 204 extends to the bottom of the inner cavity of the gas washing bottle 1 and is located below the liquid surface of the color indicator liquid 6 in the gas washing bottle 1.

[0022] Specifically, in this embodiment, the bottle cap 2, the air pipe connection port 201, the gas outlet 202, the gas outlet pipe 203, and the gas inlet pipe 204 are integrated into a single structure, made of corrosion-resistant material, facilitating manufacturing and disassembly for easy transport. The air pipe connection port 201 and the gas outlet 202 protrude from the top surface of the bottle cap 2, located on the outer side of the gas washing bottle 1. The outer periphery of the air pipe connection port 201 and the gas outlet 202 are respectively frustoconical in shape, and their outer diameters gradually decrease from top to bottom, facilitating the connection of pipelines as needed. In this embodiment, the top opening of the bottle cap 2 and the gas washing bottle 1 are connected by threads, facilitating disassembly and assembly, and ensuring good airtightness after the bottle cap 2 and the gas washing bottle 1 are connected.

[0023] Specifically, in this embodiment, the large-diameter connecting pipe 3 uses a flexible hose with a diameter of 20mm or 25mm, suitable for common natural gas transmission systems. The small-diameter connecting pipe 5 can use a 5mm flexible hose. The diameter of the large-diameter connecting pipe 3 is larger than that of the small-diameter connecting pipe 5, which reduces the gas flow through the inlet and slightly increases the rate of gas output to the gas washing bottle 1. The diameters of the large-diameter connecting pipe 3 and the small-diameter connecting pipe 5 can be adjusted arbitrarily according to usage requirements. The reducing fitting 4 uses a commercially available pagoda fitting product, based on the corresponding diameters of the large-diameter connecting pipe 3 and the small-diameter connecting pipe 5, for easy assembly and disassembly. Furthermore, the use of flexible hoses for both the large-diameter connecting pipe 3 and the small-diameter connecting pipe 5 facilitates changes in the overall shape of the device for easy storage.

[0024] Specifically, in this embodiment, the color indicator liquid 6 can be a potassium permanganate solution that can chemically react with the sulfur-free odorant, facilitating preparation. The color indicator liquid 6 can also be other reagents that can react with the corresponding sulfur-free odorant and produce a color change. The volume and concentration of the color indicator liquid 6 contained in the gas washing bottle 1 need to be accurately determined.

[0025] In use, connect the large-diameter connecting pipe 3 to the natural gas pipeline to be tested. The natural gas to be tested sequentially passes through the large-diameter connecting pipe 3, the reducing connector 4, the small-diameter connecting pipe 5, the gas pipe connection port 201, and the gas inlet pipe 204 into the gas washing bottle 1, where it reacts with the color indicator liquid 6. Afterward, the natural gas to be tested is discharged from the gas outlet pipe 203 and the gas outlet 202. The output rate of the natural gas pipeline to be tested, which is introduced into the color indicator liquid 6, needs to be adjusted to a suitable rate. Through a chemical reaction with the predetermined volume and concentration of the color indicator liquid 6, a simple and easy-to-understand color reaction is produced. Based on the specific time of the color change, the content of the sulfur-free odorant can be calculated. The test is portable and rapid. During use, ensure that the color indicator liquid 6 does not leak, that all parts are not damaged, and wear gloves and a mask for protection.

[0026] In one specific embodiment, the gas washing bottle 1 has a volume of 60 mL, and the corresponding color indicator liquid 6 is a 20 mL solution of 0.5% potassium permanganate diluted 300 times. During detection, the valve of the natural gas pipeline to be tested is slowly opened, and timing begins. By controlling the degree of valve opening, the gas flow rate is maintained at approximately 3 to 5 bubbles per second. The solution changes color, from purplish-red to very pale yellow or colorless, at which point timing stops. If the measured time is between 80 and 100 seconds, the sulfur-free odorant content is approximately 10 to 20 mg / m³. 3 The time is less than 80 seconds, and the content of sulfur-free odorant is less than 10 mg / m³. 3If the time exceeds 100 seconds, the sulfur-free odorant content exceeds 20 mg / m³. 3 After the test is completed, close the valve on the natural gas pipeline, and the color indicator liquid 6 can be recovered.

Claims

1. A portable sulfur-free odorizing agent detection device, characterized by: It comprises a gas washing bottle (1), a bottle cap (2), a large-diameter connecting pipe (3), a reducing joint (4), and a small-diameter connecting pipe (5). The reducing joint (4) has a large-diameter opening end and a small-diameter opening end in communication, one end of the large-diameter connecting pipe (3) is used to communicate with a natural gas pipeline to be tested, the other end of the large-diameter connecting pipe (3) communicates with the large-diameter opening end of the reducing joint (4), and the small-diameter opening end of the reducing joint (4) communicates with one end of the small-diameter connecting pipe (5). The gas washing bottle (1) is made of transparent material, the bottom of the gas washing bottle (1) is closed, and the top is open, the bottle cap (2) is installed on the top opening of the gas washing bottle (1) and is used to close the top opening of the gas washing bottle (1), the gas washing bottle (1) contains a color indicating liquid agent (6), the top surface of the bottle cap (2) outside the gas washing bottle (1) is respectively provided with a gas pipe connecting port (201) and a gas discharge port (202), the part of the bottle cap (2) in communication with the top opening of the gas washing bottle (1) is respectively provided with a gas outlet pipe (203) and a gas inlet pipe (204), one end of the gas outlet pipe (203) communicates with the gas discharge port (202), the other end of the gas outlet pipe (203) is located above the liquid level of the color indicating liquid agent (6) in the gas washing bottle (1), one end of the gas inlet pipe (204) communicates with the gas pipe connecting port (201), and the other end of the gas inlet pipe (204) extends to the bottom of the inner cavity of the gas washing bottle (1) and is located below the liquid level of the color indicating liquid agent (6) in the gas washing bottle (1).

2. A portable sulfur-free odorizing agent detection device according to claim 1, characterized in that: The bottle cap (2), the gas pipe connecting port (201), the gas discharge port (202), the gas outlet pipe (203), and the gas inlet pipe (204) are an integral structure.

3. The portable sulfur-free odorizing agent detection device of claim 1, wherein: The gas pipe connecting port (201) and the gas discharge port (202) protrude from the top surface of the bottle cap (2) outside the gas washing bottle (1), the outer peripheral contour shapes of the gas pipe connecting port (201) and the gas discharge port (202) are both truncated cone shapes, and the outer diameters of the gas pipe connecting port (201) and the gas discharge port (202) gradually decrease from top to bottom.

4. The portable sulfur-free odorizing agent detection device of claim 1, wherein: The reducing joint (4) is a tower joint.

5. The portable sulfur-free odorizing agent detection device of claim 1, wherein: The large-diameter connecting pipe (3) and the small-diameter connecting pipe (5) are both flexible pipes, and the pipe diameter of the large-diameter connecting pipe (3) is larger than that of the small-diameter connecting pipe (5).

6. The portable sulfur-free odorizing agent detection device of claim 1, wherein: The bottle cap (2) and the top opening of the gas washing bottle (1) are connected by threads.

7. The portable sulfur-free odorizing agent detection device of claim 1, wherein: The color indicating liquid agent (6) is a potassium permanganate solution.

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