Trace waste gas detection gas circuit

Abstract

The utility model is suitable for the field of waste gas monitoring, and provides a trace waste gas detection gas circuit which comprises an extraction device, an air treatment system and an analyzer, a controller, a main pipeline and a standard gas generator are mounted in the extraction device, and an air extractor is mounted on the main pipeline; a laser detector and an atlas display are mounted in the analyzer; the standard gas generator is connected with the laser detector through a pipeline; the air treatment system comprises an air inlet pipe and an air storage device; the gas inlet pipe is connected with a gas storage device through a pipeline; the gas storage device is connected with a laser detector through a pipeline; the controller is electrically connected with the laser detector and the atlas display, so that the trace waste gas detection gas circuit is high in sensitivity, high in precision, high in reliability and wide in application; the method has important application value in the aspects of environmental protection, industrial safety, health monitoring and the like.

Description

Technical Field

[0001] The utility model is applicable to the field of waste gas monitoring and provides a trace waste gas detection gas circuit. Background Art

[0002] Waste gas monitoring refers to the process of monitoring and analyzing trace harmful gas components in waste gas emitted during industrial production. These harmful gases may include sulfur dioxide, nitrogen oxides, carbon monoxide, volatile organic compounds, etc.

[0003] Exhaust gas monitoring is often used for environmental protection and industrial safety management to ensure that exhaust gas emissions comply with relevant laws, regulations and standards and protect the surrounding environment and personnel health. Monitoring methods include sampling and analysis using gas analyzers, chromatographs, mass spectrometers and other equipment.

[0004] For monitoring harmful exhaust gases, the concentration of the detected gas may reach 10 -6 Unit, ordinary gas detection equipment cannot meet the requirements in terms of sensitivity, accuracy and reliability. Utility Model Content

[0005] In view of the above-mentioned defects, the purpose of the present utility model is to provide a trace exhaust gas detection gas circuit, the purpose is to solve the problems raised in the background technology, the device includes an extraction device, an air treatment system and an analyzer;

[0006] A controller, a main line and a standard gas generator are installed inside the extraction device, and an exhaust device is installed on the main line; a laser detector and a spectrum display are installed inside the analyzer; the standard gas generator is connected to the laser detector through a pipeline; the air handling system includes an air intake pipe and an air storage device; the air intake pipe is connected to the air storage device through a pipeline, and the air storage device is connected to the laser detector through a pipeline; the controller is electrically connected to the laser detector and the spectrum display.

[0007] Furthermore, a connection box is installed on the top of the extraction device, and an electric beam is connected to the controller, and the electric beam passes through the connection box.

[0008] Furthermore, the main pipeline is connected to a heating pipeline, and the heating pipeline is connected to a laser detector inside the analyzer.

[0009] Furthermore, the heating pipeline includes a heating jacket, and an electric heating layer is provided between the heating jacket and the main pipeline.

[0010] Furthermore, the air intake pipe is connected to a filter, the filter is connected to a water removal device through a pipeline, the water removal device is connected to an oil removal device through a pipeline, and the oil removal device is connected to an air storage device through a pipeline.

[0011] Furthermore, the laser detector is provided with an air outlet pipe, and a cooling device is installed on the air outlet pipe.

[0012] Furthermore, a heat pipe is installed on the main pipe.

[0013] Furthermore, the controller is electrically connected to the air extraction device, the standard gas generator, the heat pipe, the heating pipeline and the cooling device.

[0014] This utility model detects very low concentrations of gas through a laser detector, usually at the ppm (parts per million) or ppb (parts per billion) level, and has the characteristics of high sensitivity: this trace exhaust gas monitoring gas circuit has high precision and high resolution, and can accurately measure the concentration of different gas components, thereby providing reliable monitoring data. At the same time, it can stably and reliably monitor for a long time, ensuring the accuracy and reliability of the monitoring results, so it has important application value in environmental protection, industrial safety, health monitoring and other aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the device structure;

[0016] Figure 2 is a cross-sectional view of the heating pipeline;

[0017] In the figure: 01-standard gas generator; 02-controller; 1-air inlet; 2-exhaust device; 3-heat pipe; 4-extraction device; 5-main line; 6-connecting box; 7-electric beam; 8-gas pipe; 9-heating pipeline; 92-heating jacket; 93-electric heating layer; 10-laser detector; 11-analyzer; 12-chart display; 120-air outlet pipe; 121-cooling device; 122-vacuum pump; 13-water removal device; 14-air treatment system; 15-oil removal device; 17-gas storage device; 18-filter; 19-inlet pipe. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0019] See also Figure 1 , the purpose of the utility model is to provide a trace exhaust gas detection gas circuit, including a standard gas generator 01, a controller 02, an extraction device 4, an air treatment system 14 and an analyzer 11;

[0020] The extracting device 4 is provided with a main pipe 5 inside, and a gas extraction device 2 is installed on the main pipe 5, and the gas extraction device 2 is a gas extraction device. The analyzer 11 is installed with a laser detector 10 and a spectrum display 12 inside, and the laser detector 10 is electrically connected to the spectrum display 12. A connection box 6 is installed on the top of the extracting device 4, and the standard gas generator 01 is installed inside the extracting device 4. The pipeline connected to the standard gas generator 01 passes through the connection box 6 and is connected to the laser detector 10 after passing through the connection box 6;

[0021] The controller 02 is connected to an electric beam 7 . The electric beam 7 connected to the controller 02 passes through the connection box 6 and is electrically connected to the laser detector 10 and the spectrum display 12 ; the laser detector 10 is electrically connected to the spectrum display 12 .

[0022] The main pipeline 5 passes through the extraction device 4 and is connected to a heating pipeline 9 , and the heating pipeline 9 is connected to a laser detector 10 inside an analyzer 11 .

[0023] The air treatment system 14 includes a dewatering device 13, an oil removal device 15, an air storage device 17, and a filter 18. An air intake pipe 19 is installed on the air treatment system 14, and the air intake pipe 19 is connected to a power device such as an air compressor at one end outside the air treatment system 14. The air intake pipe 19 is connected to the filter 18, and the filter 18 is connected to the dewatering device 13 through a pipeline, and the dewatering device 13 is connected to the oil removal device 15 through a pipeline, and the oil removal device 15 is connected to the air storage device 17 through a pipeline, and the air storage device 17 is connected to the laser detector 10 through a pipeline. Specifically, a controllable solenoid valve is installed on the pipeline connecting the air storage device 17 and the laser detector 10, and the controllable solenoid valve is electrically connected to the controller 02.

[0024] The working principle of the exhaust gas detection gas circuit of the utility model is as follows:

[0025] When performing exhaust gas monitoring: the exhaust gas outside can be sucked into the main pipeline 5 through the exhaust device 2, and the exhaust gas moves along the main pipeline 5 and first enters the heating pipeline 9, which can heat the exhaust gas passing through the interior, and the heated exhaust gas enters the laser detector 10;

[0026] At the same time, air enters the air treatment system 14 from the air intake pipe 19 of the air treatment system 14, and is first filtered by the filter 18, which can adsorb and remove solid particles in the air. The air is then filtered by the water removal device 13 and the oil removal device 15 in turn to remove moisture and oil in the air, and finally enters the gas storage device 17 for temporary storage. The gas in the gas storage device 17 then enters the laser detector 10 through the pipeline, mixes with the exhaust gas, and dilutes the exhaust gas. This process is to prevent inaccurate data caused by trace detection when the exhaust gas concentration is too high.

[0027] The laser detector 10 uses laser monitoring technology (GDLAS), which is a mature existing technology. Its principle is that the laser detector 10 has an air cavity inside, and the gas in the air cavity is scanned by laser to generate a meteorological spectrum of the gas. The spectrum display 12 electrically connected to the laser detector 10 can display the spectrum detected by the laser detector 10. The output of the spectrum is displayed as a wave line. The staff can determine the substance and content in the gas according to the area and value of the peak in the spectrum.

[0028] During gas calibration: the exhaust device does not work, the calibration gas generator 01 can generate the gas to be measured, and the exhaust gas to be measured enters the air cavity inside the laser detector 10 through the air pipe 8. At the same time, the air treatment system 14 is still working, and the equipment calibrates the gas to be measured.

[0029] See also Figure 1 Preferably, a heat pipe 3 is installed on the outside of the main pipeline 5. The heat pipe 3 can preheat the exhaust gas inside the main pipeline 5.

[0030] See also Figure 1 , 2 Preferably, the heating pipeline 9 includes a heating jacket 92 , and an electric heating layer 93 is provided between the heating jacket 92 and the main pipeline 5 .

[0031] See also Figure 1 Preferably, the laser detector 10 is provided with an air outlet pipe 120, and a cooling device 121 is installed on the air outlet pipe 120. Since the exhaust gas enters the laser detector 10 after being heated by the heating pipeline 9, the exhaust gas is hot gas after the detection is completed, and needs to be cooled by the cooling device 121 to prevent damage to subsequent gas discharge equipment.

[0032] Preferably, the controller 02 is electrically connected to the standard gas extraction device 2, the generator 01, the heat pipe 3, the heating pipeline 9 and the cooling device 121; the controller 02 can control the opening and closing of the standard gas extraction device 2, the generator 01, the heat pipe 3, the heating pipeline 9 and the cooling device 121, and accurately control each device in the detection gas circuit.

[0033] In summary, the utility model can monitor trace exhaust gas: the exhaust gas outside can be sucked into the main pipe 5 through the exhaust device 2, the exhaust gas moves along the main pipe 5 into the heating pipeline 9 to heat the exhaust gas, and the heated exhaust gas enters the laser detector 10 to detect the spectrum; during the process, the exhaust gas is mixed with air in the air cavity of the laser detector 10.

[0034] The air enters the air treatment system 14 from the air intake pipe 19 of the air treatment system 14, and is filtered to remove moisture, oil and solid particles in the air, and finally enters the gas storage device 17 for temporary storage. The gas in the gas storage device 17 then enters the laser detector 10 through the pipeline, and is mixed with the exhaust gas to mix and dilute the exhaust gas. The spectrum display 12 electrically connected to the laser detector 10 can display the spectrum detected by the laser detector 10. The output of the spectrum is displayed as a wave line. The staff can determine the substance and content in the gas according to the area and value of the peak in the spectrum.

[0035] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A trace exhaust gas detection gas circuit, characterized in that: It comprises an extraction device (4), an air treatment system (14) and an analyzer (11); The extraction device (4) is internally installed with a controller (02), a main pipeline (5) and a standard gas generator (01), and the main pipeline (5) is installed with an exhaust device (2); the analyzer (11) is internally installed with a laser detector (10) and a spectrum display (12); the standard gas generator (01) is connected to the laser detector (10) through a pipeline; the air treatment system (14) includes an air intake pipe (19) and an air storage device (17); the air intake pipe (19) is connected to the air storage device (17) through a pipeline, and the air storage device (17) is connected to the laser detector (10) through a pipeline; the controller (02) is electrically connected to the laser detector (10) and the spectrum display (12).

2. The trace exhaust gas detection gas circuit according to claim 1, characterized in that: A connection box (6) is installed on the top of the extraction device (4), an electric beam (7) is connected to the controller (02), and the electric beam (7) passes through the connection box (6).

3. The trace exhaust gas detection gas circuit according to claim 1, characterized in that: The main pipeline (5) is connected to a heating pipeline (9), and the heating pipeline (9) is connected to a laser detector (10) inside the analyzer (11).

4. The trace exhaust gas detection gas circuit according to claim 3, characterized in that: The heating pipeline (9) comprises a heating jacket (92), and an electric heating layer (93) is provided between the heating jacket (92) and the main pipeline (5).

5. The trace exhaust gas detection gas circuit according to claim 1, characterized in that: The air intake pipe (19) is connected to a filter (18), the filter (18) is connected to a water removal device (13) via a pipeline, the water removal device (13) is connected to an oil removal device (15) via a pipeline, and the oil removal device (15) is connected to an air storage device (17) via a pipeline.

6. The trace exhaust gas detection gas circuit according to claim 4, characterized in that: An air outlet pipe (120) is provided on the laser detector (10), and a cooling device (121) is installed on the air outlet pipe (120).

7. The trace exhaust gas detection gas circuit according to claim 6, characterized in that: A heat pipe (3) is installed on the main pipe (5).

8. The trace exhaust gas detection gas circuit according to claim 7, characterized in that: The controller (02) is electrically connected to the air extraction device (2), the calibration gas generator (01), the heat pipe (3), the heating pipeline (9) and the cooling device (121).

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