Natural gas odorant tetrahydrothiophene detector

Abstract

The utility model discloses a natural gas odorant tetrahydrothiophene detector, which relates to the technical field of gas detection, solves the technical problems of large error, complex steps and long time consumption in the prior art, and comprises a sampling probe and an analyzer host, an input structure is connected between the sampling probe and the input end of the analyzer host, a main control board and a long-optical-path gas absorption cell are arranged in the analyzer host, an ultraviolet light source and a spectrograph are fixedly arranged in the analyzer host, the error of a detection result is obviously reduced, and more reliable data can be provided; the operation steps of the instrument are more simplified, the detection time is remarkably shortened, and the working efficiency is improved; the detection limit and the accuracy of tetrahydrothiophene can be improved, and even trace leakage can be accurately detected, so that the safety is enhanced; the instrument supports detection positioning and real-time data uploading, and real-time monitoring and management of natural gas use conditions are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of gas detection, in particular to a detector for tetrahydrothiophene, a natural gas odorant. Background Art

[0002] In the technical field related to the utility model, the wide application of natural gas is of great significance in improving energy utilization efficiency, alleviating energy transportation pressure, reducing pollutant emissions, improving the atmospheric environment, and enhancing people's living quality. To ensure safe use, people usually add a small amount of strongly pungent gas to natural gas so as to give a timely warning in case of leakage. Tetrahydrothiophene has become a commonly used odorant for city gas because it is not easy to corrode gas equipment and does not cause habitual passivation of human olfaction, fully meeting the need for safety guarantee. At present, the commonly used detection methods for tetrahydrothiophene mainly include the following several kinds: 1. Electrochemical sensor method; 2. Gas chromatography method, which separates the substance to be detected and uses an ionization detector for detection; 3. High performance liquid chromatography method. It should be noted that when applying chromatography, not only the sample needs to be processed, but also conditions such as the temperature of the chromatographic column need to be set. In addition, chromatography usually requires carriers such as nitrogen or deionized water. Moreover, the relatively long separation time required for the chromatographic column to separate substances and the complexity of the operation make this method relatively cumbersome.

[0003] The prior art has technical problems of large error, complex steps and long time consumption. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the utility model provides a detector for tetrahydrothiophene, a natural gas odorant, which solves the technical problems of large error, complex steps and long time consumption existing in the prior art.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions: A detector for tetrahydrothiophene, a natural gas odorant, includes a sampling probe and an analyzer mainframe. An input structure is connected between the sampling probe and the input end of the analyzer mainframe. A main control board and a long optical path gas absorption cell are installed in the analyzer mainframe. An ultraviolet light source and a spectrometer are fixedly installed in the analyzer mainframe. An output structure is installed in the analyzer mainframe.

[0006] Preferably, the input structure includes a sintered filter and a gas guide tube. The sintered filter is connected to the output end of the sampling probe. The output end of the sintered filter is connected to the input end of the gas guide tube. The output end of the gas guide tube is connected to the input end of the long optical path gas absorption cell.

[0007] Preferably, the output structure includes an electronic flowmeter and a sampling pump. The output end of the long optical path gas absorption cell is connected to the input end of the electronic flowmeter. The output end of the electronic flowmeter is connected to the input end of the sampling pump.

[0008] Preferably, an input optical fiber is connected between the ultraviolet light source and the long optical path gas absorption cell, and an output optical fiber is connected between the spectrometer and the long optical path gas absorption cell.

[0009] Preferably, a display screen is installed on the analyzer mainframe.

[0010] Preferably, the main control board is connected to an external data management platform.

[0011] Beneficial effects

[0012] The utility model provides a detector for tetrahydrothiophene, a natural gas odorant. Compared with an electrochemical sensor, the detection result error of the utility model is significantly reduced, and more reliable data can be provided; compared with the traditional chromatography method, the operation steps of this instrument are more simplified, the detection time is significantly shortened, and the work efficiency is improved; the detection limit and accuracy of tetrahydrothiophene can be improved, and even a trace leakage can be accurately detected, thereby enhancing safety; the instrument supports detection positioning and real-time data uploading, which is convenient for the supervision department and relevant units to monitor and manage the use of natural gas in real time; the equipment adopts an explosion-proof mainframe and a sampling probe to ensure safety in a potentially risky environment; the equipment design considers the convenience of operation and maintenance, and is easy to manage and maintain daily; the main control board is connected to an external data management platform, which is convenient for further data analysis and processing, and improves the application value of the technology. Description of the drawings

[0013] Figure 1 It is a schematic structural diagram of the detector for tetrahydrothiophene, a natural gas odorant, described in the utility model.

[0014] In the figure: 1. Sampling probe; 2. Analyzer mainframe; 3. Main control board; 4. Long optical path gas absorption cell; 5. Ultraviolet light source; 6. Spectrometer; 7. Sand core filter; 8. Air duct; 9. Electronic flowmeter; 10. Sampling pump; 11. Input optical fiber; 12. Output optical fiber; 13. Display screen; 14. Data management platform; Specific embodiments

[0015] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. The detailed description is as follows.

[0016] Please refer to Figure 1, the present utility model provides a technical solution: a tetrahydrothiophene detector for natural gas odorant, including a sampling probe 1 and an analyzer host 2. There is an input structure connected between the output end of the sampling probe 1 and the input end of the analyzer host 2. Inside the analyzer host 2, there are a main control board 3 and a long optical path gas absorption cell 4 installed. Inside the analyzer host 2, there are a UV light source 5 and a spectrometer 6 fixedly installed. There is an output structure installed inside the analyzer host 2.

[0017] In this embodiment, it is further set that the input structure includes a sintered filter 7 and a gas duct 8. The sintered filter 7 is connected to the output end of the sampling probe 1. The output end of the sintered filter 7 is connected to the input end of the gas duct 8. The output end of the gas duct 8 is connected to the input end of the long optical path gas absorption cell 4.

[0018] In this embodiment, it is further set that the output structure includes an electronic flowmeter 9 and a sampling pump 10. The output end of the long optical path gas absorption cell 4 is connected to the input end of the electronic flowmeter 9. The output end of the electronic flowmeter 9 is connected to the input end of the sampling pump 10.

[0019] In this embodiment, it is further set that there is an input optical fiber 11 connecting the UV light source 5 and the long optical path gas absorption cell 4, and there is an output optical fiber 12 connecting the spectrometer 6 and the long optical path gas absorption cell 4.

[0020] In this embodiment, it is further set that a display screen 13 is installed on the analyzer host 2.

[0021] In this embodiment, it is further set that the main control board 3 is connected to an external data management platform 14.

[0022] The detailed connection means are well-known techniques in the art; as Figure 1 shown, natural gas enters the sintered filter 7 through the sampling probe 1. The sintered filter 7 effectively filters impurities and moisture in the gas to ensure the detection accuracy of the subsequent analyzer; the filtered gas is transported to the analyzer host 2 through the gas duct 8; the analyzer host 2 consists of multiple components, including a UV light source 5, a long optical path gas absorption cell 4, a spectrometer 6, a sampling pump 10, a display screen 13, and a main control board 3.

[0023] The UV beam from the UV light source 5 enters one end of the long optical path gas absorption cell 4 through the input optical fiber 11, passes through the long optical path gas absorption cell 4, and then the UV beam after gas absorption is introduced into the spectrometer 6 through the output optical fiber 12.

[0024] The main control board 3 receives the spectral signal from the spectrometer 6, analyzes and calculates the gas concentration of tetrahydrothiophene. At the same time, the main control board 3 receives the flow signal of the electronic flowmeter 9 from the sampling pump 10 and adjusts the power of the sampling pump 10 as needed to maintain a constant gas flow.

[0025] The main control board 3 also collects the pressure signal of the gas absorption cell to perform pressure correction on the concentration value of tetrahydrothiophene, thereby improving the accuracy of the analysis result.

[0026] The main control board 3 uploads the detected position information and concentration results to the data management platform 14 in real time, facilitating supervision and management by relevant personnel.

[0027] The display screen 13 displays the detection results and relevant parameters in real time, enabling the operator to intuitively understand the gas concentration situation and the equipment status.

[0028] During daily detection, the operator only needs to press the start button to automatically perform gas sampling and analysis, and the detection results can be viewed through the display screen 13 and the data management platform 14.

[0029] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0030] The above are only the preferred embodiments of the present invention, and do not impose any formal limitations on the present invention. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A detector for tetrahydrothiophene, a natural gas odorant, comprising a sampling probe (1) and an analyzer mainframe (2), characterized in that, An input structure is connected between the sampling probe (1) and the input end of the analyzer mainframe (2). A main control board (3) and a long optical path gas absorption cell (4) are installed in the analyzer mainframe (2). A UV light source (5) and a spectrometer (6) are fixedly installed in the analyzer mainframe (2). An output structure is installed in the analyzer mainframe (2).

2. The detection instrument for tetrahydrothiophene as a natural gas odorant according to claim 1, characterized in that, The input structure includes a sintered filter (7) and a gas guide tube (8). The sintered filter (7) is connected to the output end of the sampling probe (1). The output end of the sintered filter (7) is connected to the input end of the gas guide tube (8). The output end of the gas guide tube (8) is connected to the input end of the long optical path gas absorption cell (4).

3. The tetrahydrothiophene detector for natural gas odorant according to claim 1, characterized in that, The output structure includes an electronic flowmeter (9) and a sampling pump (10). The output end of the long optical path gas absorption cell (4) is connected to the input end of the electronic flowmeter (9). The output end of the electronic flowmeter (9) is connected to the input end of the sampling pump (10).

4. A tetrahydrothiophene detector for natural gas odorant according to claim 1, wherein, An input optical fiber (11) is connected between the UV light source (5) and the long optical path gas absorption cell (4). An output optical fiber (12) is connected between the spectrometer (6) and the long optical path gas absorption cell (4).

5. A detector for tetrahydrothiophene, a natural gas odorant, according to claim 1, characterized in that A display screen (13) is installed on the analyzer mainframe (2).

6. The tetrahydrothiophene detector for natural gas odorant according to claim 1, wherein The main control board (3) is connected to an external data management platform (14).

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