Explosion-proof gas online analyzer with pretreatment gas circuit

Abstract

The utility model provides an explosion-proof type gas on-line analyzer with a pretreatment gas circuit, which comprises a gas circuit and an explosion-proof type electric device, the electric device is connected with a control circuit, the control circuit is arranged in an explosion-proof box, and the explosion-proof box is arranged outside the gas circuit; the gas path comprises a measuring gas path and a gas supply gas path for providing gas for the measuring gas path, the gas supply gas path comprises a fuel gas path, an explosion-proof valve is arranged between the measuring gas path and each gas supply gas path, and the electric device arranged on the measuring gas path comprises a detector. The explosion-proof gas on-line analyzer with the pretreatment gas circuit has the advantages that the gas circuit meeting the explosion-proof requirement and the explosion-proof electric device are adopted, the control circuit is packaged into the explosion-proof box, so that the control circuit is separated from the gas circuit, no combustible gas is introduced into the explosion-proof box, the overall design meets the explosion-proof requirement, and the explosion-proof gas on-line analyzer with the pretreatment gas circuit is convenient to use. And the safety performance is relatively high.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of odorant detector of combustible gas, specifically, it relates to a kind of explosion-proof gas on-line analyzer with pretreatment gas path. BACKGROUND

[0002] Because town gas has the characteristics of flammable, explosive and toxic, in relatively closed gas environment (building), once the leakage of gas is easy to cause gas poisoning, explosion and other accidents, to personal and public safety threat. In order to prevent and reduce the leakage of gas from poisoning, explosion and other malignant accidents caused by not timely discovery, town gas must be required to be odorized. Gas odorization has a positive effect on gas safety supply and use. If odorant is added in gas, if gas leakage occurs during transportation and distribution, it can make the operator and manager alert, and it is also convenient for leak detection; if gas leakage occurs in the kitchen of residents, the user can detect it in time.

[0003] In order to improve the safety of gas supply, the odorization concentration should be kept within a certain range, so as to ensure that the concentration of odorant at the end of the pipeline is greater than the minimum detection amount. After adding odorant in town gas pipeline, due to the adsorption of odorant by pipeline, the concentration of odorant will gradually decrease with the change of time and the increase of distance from odorization point, so it is necessary to measure the concentration of odorant at the end of the pipeline, that is, to use odorant detector.

[0004] At present, the widely used odorant is tetrahydrothiophene (THT). Taking tetrahydrothiophene concentration measurement as an example, the existing electrochemical tetrahydrothiophene on-line detector generally adopts an explosion-proof box to package gas path, electrical devices, circuit modules and the like in the explosion-proof box. For example, the long-term on-line monitoring system for tetrahydrothiophene disclosed in Chinese utility model patent CN202221704663.8 and the fixed type tetrahydrothiophene on-line detector and detection method disclosed in Chinese invention patent CN202310548696.0, the gas pipeline, gas path, electrical devices and circuit modules are not separated for explosion prevention. When there is gas leakage and electrical device and circuit abnormality, explosion accident is easy to occur, which has serious safety risk and does not meet the explosion-proof requirement.

[0005] In order to solve the above problems, people have been seeking an ideal technical solution. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at the deficiency of prior art, and provides an explosion-proof gas on-line analyzer with pretreatment gas path.

[0007] In order to achieve the above object, the utility model adopts the technical scheme that includes gas path and explosion -proof electric device, the electric device is connected with control circuit, the control circuit is located in the explosion -proof box, the explosion -proof box is located outside the gas path, the gas path includes measurement gas path and the gas supply path for the measurement gas path, the gas supply path includes gas path, the valve of explosion -proof type is equipped between the measurement gas path and each gas supply path, the electric device including detector is equipped on the measurement gas path.

[0008] Based on the above, the electric device equipped on the measurement gas path also includes flow meter and flow control valve, the flow meter and the flow control valve are used for adjusting the gas flow to the fixed flow to improve the measurement accuracy of the detector.

[0009] Based on the above, the electric device equipped on the gas path includes pressure reducing valve.

[0010] Based on the above, the electric device equipped on the gas path also includes pressure sensor, and the pressure sensor is arranged between the valve and the pressure reducing valve on the gas path.

[0011] Based on the above, the gas supply path also includes purge gas path.

[0012] Based on the above, the electric device equipped on the purge gas path includes electromagnetic pump.

[0013] Based on the above, the electric device also includes gas electromagnetic valve and purge electromagnetic valve, the valve between the gas path and the measurement gas path is equipped with the gas electromagnetic valve, and the valve between the purge gas path and the measurement gas path is equipped with the purge electromagnetic valve.

[0014] Based on the above, the electric device also includes three-way electromagnetic valve, and the valve between the measurement gas path, the gas path and the purge gas path adopts the three-way electromagnetic valve.

[0015] Based on the above, the gas supply path also includes calibration gas path.

[0016] Based on the above, the gas supply path also includes transition gas path, the transition gas path, the calibration gas path and the measurement gas path are directly communicated, and the valve of the calibration gas path between the three is equipped with calibration three-way valve.

[0017] Based on the above, it also includes protective machine case, and the gas path, the electric device and the explosion -proof box are all arranged in the protective machine case.

[0018] Based on the above, the exhaust pipeline of the measurement gas path leads to the outside of the protective machine case, and the electric device equipped in the protective machine case also includes gas alarm.

[0019] Based on the above, the electric device arranged inside the protection case further comprises a temperature detection device and an explosion-proof heating device.

[0020] Based on the above, a remote transmission module is arranged on the control circuit, and the remote transmission module is used for uploading detection data and equipment state data.

[0021] The explosion-proof gas on-line analyzer with a pre-processing gas path has the advantages that: the gas path and the electric device meet the explosion-proof requirements, the control circuit is encapsulated into the explosion-proof box, so that the control circuit and the gas path are separated, no combustible gas is introduced into the explosion-proof box, the electric device and other devices on the gas path outside the explosion-proof box are explosion-proof, the overall design meets the explosion-proof requirements, and the explosion-proof gas on-line analyzer has high safety performance; the control circuit is used for controlling the electric device, and the measurement process can be automatically completed; the use of the pressure reducing valve makes the application range of the analyzer device wider; the use of the flow meter and the flow control valve can limit the gas flow within a certain range, and the influence of the fluctuation of the gas flow on the detection result is avoided; the use of the pressure sensor prevents the failure leakage of the gas path; the overall encapsulation of the protection case further improves the safety. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structure schematic view of the gas path, the electric device and the explosion-proof box of the utility model;

[0023] Figure 2 is a structure schematic view of the gas path, the electric device and the explosion-proof box of another utility model;

[0024] Figure 3 is a whole structure schematic view of the utility model;

[0025] Figure 4 is a gas path structure schematic view of the utility model;

[0026] In the drawing, the reference signs are:

[0027] Gas path 10, measurement gas path 11, fuel gas path 12, purge gas path 13, calibration gas path 14, transition gas path 15;

[0028] Electric device 20, three-way electromagnetic valve 21, calibration three-way valve 22; detector 211, flow meter 212, flow control valve 213; pressure reducing valve 221, fuel gas electromagnetic valve 222, pressure sensor 223; electromagnetic pump 231, purge electromagnetic valve 232;

[0029] Control circuit 30, remote transmission module 31;

[0030] Explosion-proof box 40;

[0031] Protective cabinet 50. DETAILED DESCRIPTION

[0032] The technical scheme of the utility model will be described in further detail below through the specific embodiments.

[0033] As Figures 1-4 shown, the explosion-proof gas on-line analyzer with a pre-treatment gas path of the utility model comprises a gas path 10, electrical devices 20, a control circuit 30 and an explosion-proof box 40, the electrical devices 20 are set to be explosion-proof, a part of the electrical devices 20 are set on the gas path 10 to complete the control, information collection and other functions of the gas path 10; other devices on the gas path 10 such as the manual valve required in some embodiments are also set to be explosion-proof, and the other devices assist the electrical devices 20 to complete the control, information collection and other functions of the gas path 10; the control circuit 30 is connected with the electrical devices 20, the control circuit 30 can be set to be an integrated control mainboard, the control circuit 30 is used for controlling the electrical devices 20 and other devices and sending / receiving / processing the signals of the electrical devices 20, the control circuit 30 is set in the explosion-proof box 40, and the explosion-proof box 40 is set outside the gas path 10.

[0034] The above structure encapsulates the control circuit 30 into the explosion-proof box 40, thereby separating the control circuit 30 from the gas path 10, there is no combustible gas in the explosion-proof box 40, and the electrical devices 20 and other devices on the gas path 10 outside the explosion-proof box 40 are all explosion-proof, the overall design meets the explosion-proof requirement and has high safety performance.

[0035] As Figure 3 shown, the gas path 10, the electrical devices 20, the control circuit 30 and the explosion-proof box 40 are all set in the protective cabinet 50, further improving the overall safety performance.

[0036] As Figure 1 , Figure 2 shown, the gas path 10 comprises a measurement gas path 11 and a gas supply path for supplying gas for the measurement gas path 11, the gas supply path comprises a fuel gas path 12 and a purge gas path 13, the fuel gas path 12 is used for connecting a fuel gas pipeline (such as a natural gas pipeline) to supply the combustible gas to be detected for the measurement gas path 11, and the purge gas path 13 is used for continuously sending fresh air or other medium into the measurement gas path 11 to purge the measurement gas path 11; an explosion-proof valve is arranged between the measurement gas path 11 and each gas supply path, the valve can adopt an explosion-proof manual valve or an electric valve belonging to the electrical devices 20 such as an electromagnetic valve, and the electric valve can be controlled by the control circuit 30; the electrical devices 20 arranged on the measurement gas path 11 comprise a detector 211, the detector 211 can be provided with a tetrahydrothiophene sensor or other odorant sensor, and the detector 211 is used for detecting the concentration of tetrahydrothiophene or other odorants in the combustible gas supplied by the fuel gas path 12.

[0037] The way of providing fresh air or other purge medium for the purge gas path 13 can adopt a high-pressure gas source connected with the outside (such as a high-pressure gas tank connected by a pipeline), or can adopt an air supply device arranged on the purge gas path 13, the air supply device being communicated with the outside and the purge gas path 13, and the air supply device can preferably adopt an explosion-proof electromagnetic pump 231, the electromagnetic pump 231 being one of the electric devices 20, and the electromagnetic pump 231 can be controlled by the control circuit 30.

[0038] As shown in Figure 1 , Figure 2 , the electric devices 20 arranged on the measurement gas path 11 further include a flow meter 212 and a flow control valve 213, the flow meter 212 and the flow control valve 213 adjust and control the flow by sensing the flow, so as to adjust the gas flow to a fixed flow to improve the measurement accuracy of the detector 211; the flow meter 212 and the flow control valve 213 are arranged before the detector 211 to first contact the gas for flow adjustment; the flow meter 212 and the flow control valve 213 can be arranged in an integrated manner by being installed on the same main body, so as to simplify the overall structure; the flow meter 212 and the flow control valve 213 can be replaced by other flow control and flow sensing devices, such as a gas flow controller; if the gas flow of the combustible gas provided in the fuel gas path 12 is different, the measurement result of the odorant is greatly affected, and adjusting the gas flow to a fixed flow can ensure that the measurement of the detector 211 is more accurate.

[0039] As shown in Figure 1 , Figure 2 , the electric devices 20 arranged on the fuel gas path 12 include a pressure reducing valve 221, the pressure reducing valve 221 is used to reduce the high pressure in the fuel gas pipeline to a lower pressure, so as to meet the detection requirements of the measurement gas path 11, so that the measurement gas path 11 can be suitable for detection in various pressure environments, and the application range of the analyzer equipment of the utility model is improved.

[0040] As shown in Figure 1 , the fuel gas path 12 and the purge gas path 13 are communicated with the measurement gas path 11, and the electric devices 20 further include a fuel gas electromagnetic valve 222 and a purge electromagnetic valve 232, the valve between the fuel gas path 12 and the measurement gas path 11 is arranged as the fuel gas electromagnetic valve 222, and the valve between the purge gas path 13 and the measurement gas path 11 is arranged as the purge electromagnetic valve 232. The fuel gas electromagnetic valve 222 and the purge electromagnetic valve 232 are controlled by the control circuit 30 to complete opening and closing.

[0041] As shown in Figure 2As shown, the fuel gas path 12 and the purge gas path 13 are directly communicated, and both of them are communicated with the measurement gas path 11, that is, the measurement gas path 11, the fuel gas path 12 and the purge gas path 13 are communicated, and the valve between them can use a three-way valve, such as a three-way electromagnetic valve 21 or an explosion-proof manual three-way valve, the three-way electromagnetic valve 21 is one of the electrical devices 20, and the three-way electromagnetic valve 21 is controlled by the control circuit 30. The three-way electromagnetic valve 21 can be provided with one outlet and two inlets of normally open and normally closed, the outlet corresponds to the measurement gas path 11, the normally closed inlet corresponds to the fuel gas path 12, and the normally open inlet corresponds to the purge gas path 13; when the three-way electromagnetic valve 21 is not powered, the normally open inlet and the outlet are communicated, the normally closed inlet and the outlet are not communicated, and the measurement gas path 11 is communicated with the purge gas path 13; when the three-way electromagnetic valve 21 is powered, the normally open inlet and the outlet are not communicated, the normally closed inlet and the outlet are communicated, and the measurement gas path 11 is communicated with the fuel gas path 12.

[0042] Based on the above, Figure 1 、 Figure 2 As shown, the electrical device 20 provided on the fuel gas path 12 further includes a pressure sensor 223, which is arranged between the pressure reducing valve 221 on the fuel gas path 12 and the valve on the fuel gas path 12, and the valve on the fuel gas path 12 can be a fuel gas electromagnetic valve 222 or a three-way electromagnetic valve 21 or a manual valve (including a manual three-way valve); the pressure sensor 223 is used to detect whether the pressure reducing valve 221 and the valve on the fuel gas path 12 are failed, if the pressure reducing valve 221 fails to reduce pressure, the pressure sensor 223 can detect that the pressure increases; if the valve on the fuel gas path 12 fails to conduct, the pressure sensor 223 can detect that the pressure decreases. The pressure sensor 223 is communicated with the control circuit 30, and the control circuit 30 can monitor whether the gas path 10 of the analyzer device of the utility model is abnormal in real time according to the value of the pressure sensor 223 and report the device state, when the gas path 10 fails to cause leakage, the system is timely reported to inform the maintenance personnel to intervene, and more leakage is avoided.

[0043] As shown, Figure 1 、 Figure 2 The gas supply path further includes a calibration gas path 14, which is used for periodic calibration and calibration of the detector 211, and the calibration gas is communicated with the measurement gas path 11, so that the calibration and calibration of the detector 211 can be completed; when the calibration and calibration are performed, the flow meter 212 and the flow control valve 213 can adjust the gas flow of the calibration gas to a fixed flow, so that the calibration and calibration result is more accurate.

[0044] As shown, Figure 1 、 Figure 2As shown, the explosion-proof valve on the calibration gas path 14 can adopt a calibration three-way valve 22, specifically: the gas supply path further comprises a transition gas path 15, in the present fact example, the gas path 12 and the purge gas path 13 share a section of the transition gas path 15 before communicating with the measurement gas path 11, the transition gas path 15, the calibration gas path 14 and the measurement gas path 11 are directly communicated, and the valve of the calibration gas path 14 between the three is set as the calibration three-way valve 22. The calibration three-way valve 22 can adopt an explosion-proof manual three-way valve, and when calibration and calibration are performed, the rotating handle is connected with the calibration gas path 14 and the measurement gas path 11, and the transition gas path 15 and the measurement gas path 11 are cut off, so that the calibration and calibration of the detector 211 can be performed. The calibration three-way valve 22 can also adopt a calibration three-way electromagnetic valve belonging to one of the electrical devices 20, and the calibration three-way electromagnetic valve is controlled by the control circuit 30, and when calibration is needed, the control circuit 30 sets the calibration three-way electromagnetic valve to the calibration mode to connect the calibration gas path 14 and the measurement gas path 11. The calibration three-way electromagnetic valve can be provided with an outlet and two inlets of normally open and normally closed, the outlet corresponds to the measurement gas path 11, the normally closed inlet corresponds to the calibration gas path 14, and the normally open inlet corresponds to the transition gas path 15; when the calibration three-way electromagnetic valve is not powered, the normally open inlet and the outlet are communicated, the normally closed inlet and the outlet are not communicated, and the measurement gas path 11 is connected through the transition gas path 15; when the three-way electromagnetic valve 21 is powered, the normally open inlet and the outlet are not communicated, the normally closed inlet and the outlet are communicated, and the measurement gas path 11 is connected with the calibration gas path 14.

[0045] As shown in the figure, Figure 1 Figure 2 Figure 3 As shown, the gas path 10, the electrical device 20, the control circuit 30 and the explosion-proof box 40 are arranged in the protective machine box 50, and the exhaust pipeline of the gas path 10 is led to the outside of the protective machine box 50, and the electrical device 20 arranged in the protective machine box 50 further comprises a gas alarm, and the gas alarm is connected with the control circuit 30 in the explosion-proof box 40, when the gas path 10 in the protective machine box 50 leaks, the gas alarm can detect the gas leakage and send an alarm signal to prevent larger leakage from occurring; the protective machine box 50 is arranged, and the gas alarm is arranged, so that the overall safety performance can be further improved.

[0046] The protective machine box 50 can be provided with temperature detection and explosion-proof heating devices, such as temperature sensors and electric heaters, when the ambient temperature is too low, the heating device can be started to raise the temperature in the protective machine box to a certain range, so as to ensure the working stability of the electrochemical sensor.

[0047] The control circuit 30 is provided with a remote transmission module 31, which can be arranged in a wired or wireless form, and the remote transmission module 31 is used for uploading detection data and equipment state data.

[0048] The analyzer equipment of the utility model can be provided with a reserved interface, which can be connected with an external detection device (such as an external pipeline pressure detector), so as to facilitate function expansion.

[0049] As preferred, in the explosion-proof gas on-line analyzer device with a pre-treatment gas path, the valve on the fuel gas path 12 uses a fuel gas electromagnetic valve 222, the valve on the purge gas path 13 uses a purge electromagnetic valve 232, or a three-way electromagnetic valve 21 is used instead of the fuel gas electromagnetic valve 222 and the purge electromagnetic valve 232; the electromagnetic pump 231 is used on the purge gas path 13; the fuel gas electromagnetic valve 222, the purge electromagnetic valve 232, the three-way electromagnetic valve 21 and the electromagnetic pump 231 all belong to the electric device 20 and are controlled by the control circuit 30, so that the control circuit 30 can be used for automatic detection.

[0050] Specifically, the control circuit 30 is set to interval measurement, at the beginning of measurement, the control circuit 30 controls the fuel gas path 12 to be connected to the measurement gas path 11, the connection of the measurement gas path 11 to the purge gas path 13 and the calibration gas path 14 is cut off, the electromagnetic pump 231 does not work, the combustible gas enters from the fuel gas path 12, passes through the pressure reducing valve 221, the pressure sensor 223, the flow meter 212 and the flow control valve 213, is detected by the detector 211, and then is discharged through the exhaust pipeline; the control circuit 30 is provided with a fixed air supply time length, and the measurement result of the detector 211 is read after the time length; after the measurement is completed, the control circuit 30 controls the purge gas path 13 to be connected to the measurement gas path 11, the connection of the measurement gas path 11 to the fuel gas path 12 and the calibration gas path 14 is cut off, the electromagnetic pump 231 starts to work, fresh air enters from the purge gas path 13, passes through the electromagnetic pump 231, the flow meter 212 and the flow control valve 213, and blows the measurement gas path 11 and the detector 211, the control circuit 30 is provided with a fixed blowing time length, and the residual combustible gas is blown out to prevent the poisoning of the tetrahydrothiophene sensor in the detector 211; after the fixed blowing time length is ended, the control circuit 30 closes the electromagnetic pump 231, and the measurement is completed.

[0051] The explosion-proof gas on-line analyzer with a pre-treatment gas path adopts the gas path 10 and the electric device 20 meeting the explosion-proof requirement, the control circuit 30 is packaged into the explosion-proof box 40, so that the control circuit 30 is separated from the gas path 20, there is no combustible gas in the explosion-proof box 40, the electric device 20 and other devices on the gas path 10 outside the explosion-proof box 40 are all explosion-proof, the overall design meets the explosion-proof requirement and has high safety performance; the use of the pressure reducing valve 221 makes the application range of the analyzer device wider; the use of the flow meter 212 and the flow control valve 213 can limit the gas flow within a certain range, and the influence of the fluctuation of the gas flow on the detection result is avoided; the use of the pressure sensor 223 prevents the failure leakage of the gas path 10; the protective cabinet 50 is adopted to further improve the safety; the control circuit 30 is used to control the electric device 20, and the measurement process can be automatically completed.

[0052] It should be noted that the above examples are used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones; without departing from the spirit of the technical solutions of the present application, they should be covered in the technical solution range of the present application claimed.

Claims

1. An explosion-proof online gas analyzer with a pre-treatment gas path, characterized in that, The device includes a gas path (10) and an explosion-proof electrical device (20). The electrical device (20) is connected to a control circuit (30). The control circuit (30) is located inside an explosion-proof enclosure (40), which is located outside the gas path (10). The gas path (10) includes a measuring gas path (11) and a gas supply path that provides gas to the measuring gas path (11). The gas supply path includes a fuel gas path (12). An explosion-proof valve is provided between the measuring gas path (11) and each of the gas supply paths. The electrical device (20) provided on the measuring gas path (11) includes a detector (211).

2. The explosion-proof online gas analyzer with pre-treatment gas path according to claim 1, characterized in that, The electrical device (20) provided on the measuring gas path (11) also includes a flow meter (212) and a flow control valve (213). The flow meter (212) and the flow control valve (213) are used to adjust the gas flow to a fixed flow to improve the measurement accuracy of the detector (211).

3. The explosion-proof online gas analyzer with pre-treatment gas path according to claim 1 or 2, characterized in that, The electrical device (20) provided on the gas passage (12) includes a pressure reducing valve (221).

4. The explosion-proof online gas analyzer with pre-treatment gas path according to claim 3, characterized in that, The electrical device (20) provided on the gas circuit (12) also includes a pressure sensor (223), which is located between the valve and the pressure reducing valve (221) on the gas circuit (12).

5. The explosion-proof online gas analyzer with pre-treatment gas path according to claim 1, characterized in that, The gas supply path also includes a purging gas path (13).

6. The explosion-proof online gas analyzer with pre-treatment gas path according to claim 5, characterized in that, The electrical components (20) provided on the purging air passage (13) include an electromagnetic pump (231).

7. The explosion-proof online gas analyzer with pre-treatment gas path according to claim 5, characterized in that, The electrical device (20) also includes a gas solenoid valve (222) and a purge solenoid valve (232). The valve between the gas passage (12) and the measuring gas passage (11) is the gas solenoid valve (222), and the valve between the purge gas passage (13) and the measuring gas passage (11) is the purge solenoid valve (232).

8. The explosion-proof online gas analyzer with pre-treatment gas path according to claim 5, characterized in that, The electrical device (20) also includes a three-way solenoid valve (21), and the valve between the measuring gas path (11), the gas combustion path (12) and the purging gas path (13) is the three-way solenoid valve (21).

9. The explosion-proof online gas analyzer with pre-treatment gas path according to claim 1, 2, 5, 6, 7, or 8, characterized in that, The gas supply circuit also includes a calibration circuit (14).

10. The explosion-proof online gas analyzer with pre-treatment gas path according to claim 9, characterized in that, The gas supply path also includes a transition gas path (15), the transition gas path (15), the calibration gas path (14) and the measurement gas path (11) are directly connected, and the valve of the calibration gas path (14) between the three is set as a calibration three-way valve (22).

11. The explosion-proof online gas analyzer with pre-treatment gas path according to claim 1, 2, or 5, characterized in that, It also includes a protective enclosure (50), in which the gas path (10), the electrical components (20) and the explosion-proof box (40) are all located.

12. The explosion-proof online gas analyzer with pre-treatment gas path according to claim 11, characterized in that, The exhaust pipe of the measuring gas path (11) is led to the outside of the protective enclosure (50), and the electrical components (20) provided inside the protective enclosure (50) also include a gas alarm.

13. The explosion-proof online gas analyzer with pre-treatment gas path according to claim 11, characterized in that, The electrical components (20) inside the protective enclosure (50) also include a temperature detection device and an explosion-proof heating device.

14. The explosion-proof online gas analyzer with pre-treatment gas path according to claim 1, characterized in that, The control circuit (30) is equipped with a remote transmission module (31), which is used to upload detection data and equipment status data.

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