Gas monitoring device

Abstract

The utility model relates to the technical field of gas monitoring, and discloses a gas monitoring device which comprises a gas taking mechanism and a sensing mechanism which are arranged on a gas relay, the sensing mechanism comprises an ultrasonic sensing assembly, an acetylene sensing assembly and a hydrogen sensing assembly; the gas taking mechanism is provided with an ultrasonic sensing assembly, an acetylene sensing assembly and a hydrogen sensing assembly; gas is taken through a gas taking mechanism installed on a gas relay, then liquid level monitoring is carried out through an ultrasonic sensing assembly installed on the gas taking mechanism, acetylene monitoring is carried out through an acetylene sensing assembly, and hydrogen content monitoring is carried out through a hydrogen sensing assembly. According to the utility model, the liquid level, acetylene and hydrogen in the gas are respectively monitored, so that multiple monitoring of the gas is realized at the same time, and the monitoring efficiency is improved; the gas monitoring device solves the technical problems that an existing monitoring device cannot perform multi-term monitoring on gas at the same time, and the monitoring efficiency is low.

Description

Technical Field

[0001] The utility model relates to the technical field of gas monitoring, in particular to a gas monitoring device for gas. Background Art

[0002] The gas monitoring device for gas is mainly used for monitoring and preventing fire or explosion accidents caused by the excessive concentration of combustible gases such as gas. When the common gas monitoring device for gas monitors gas, it cannot simultaneously perform multiple monitoring on the gas, reducing the monitoring efficiency; and when the device for monitoring gas in the existing monitoring device fails and needs to be replaced and repaired, since the device for monitoring gas is usually integrally arranged with the monitoring device body, it is not convenient to disassemble, reducing the service life of the monitoring device.

[0003] Therefore, there is an urgent need for a gas monitoring device for gas to solve the above technical problems. Summary of the Utility Model

[0004] The utility model provides a gas monitoring device for gas, which solves the technical problem that the existing monitoring device cannot simultaneously perform multiple monitoring on the gas and has low monitoring efficiency.

[0005] A gas monitoring device for gas provided by the utility model includes a gas sampling mechanism and a sensing mechanism installed on a gas relay;

[0006] The sensing mechanism includes an ultrasonic sensing component, an acetylene sensing component and a hydrogen sensing component;

[0007] The gas sampling mechanism is installed with the ultrasonic sensing component, the acetylene sensing component and the hydrogen sensing component.

[0008] Optionally, the gas sampling mechanism includes a gas sampling mounting seat, a gas collecting pipe and an upper end adapter;

[0009] The gas relay is provided with the gas sampling mounting seat;

[0010] One end of the gas collecting pipe is connected with the gas sampling mounting seat through an external adapter;

[0011] The other end of the gas collecting pipe is provided with the upper end adapter.

[0012] Optionally, the ultrasonic sensing component is connected with the upper end adapter through an ultrasonic adapter.

[0013] Optionally, the ultrasonic sensing component includes an ultrasonic sensor and an ultrasonic sensor compression cap;

[0014] The ultrasonic sensor is installed on the upper end of the upper end adapter through the ultrasonic adapter;

[0015] The upper end of the ultrasonic sensor is connected with an ultrasonic sensor signal line through the ultrasonic sensor compression cap;

[0016] A first signal line connection port is arranged at the upper end of the ultrasonic sensor compression cap;

[0017] The ultrasonic sensor signal line is arranged in the first signal line connection port through a first connector;

[0018] A first protective sleeve is arranged on the outer side of the upper end of the ultrasonic sensor signal line;

[0019] The top ends of the ultrasonic sensor signal line and the first protective sleeve are inserted into the first connector.

[0020] Optionally, the hydrogen sensing component includes a hydrogen sensor and a hydrogen connector;

[0021] The hydrogen sensor is connected with the gas collecting pipe through the hydrogen connector.

[0022] Optionally, the acetylene sensing component is connected with the upper adapter through a two-way joint.

[0023] Optionally, the acetylene sensing component includes an acetylene sensor and an acetylene connector;

[0024] The acetylene sensor is connected to one end of the two-way joint through the acetylene connector;

[0025] The other end of the two-way joint is connected to one side of the upper adapter;

[0026] The two-way joint is provided with a solenoid valve.

[0027] Optionally, the upper end of the acetylene sensor is connected with an acetylene sensor signal line through an acetylene sensor compression cap;

[0028] A second signal line connection port is arranged at the upper end of the acetylene sensor compression cap;

[0029] The acetylene sensor signal line is arranged in the second signal line connection port through a second connector;

[0030] A second protective sleeve is arranged on the outer side of the upper end of the acetylene sensor signal line;

[0031] The top ends of the acetylene sensor signal line and the second protective sleeve are inserted into the second connector.

[0032] Optionally, a manual gas sampling valve is arranged on the other side of the upper adapter, and the manual gas sampling valve is inserted into the upper adapter;

[0033] The manual gas sampling valve is provided with an external connection port;

[0034] The external connection port is vertically arranged with the manual gas extraction knob of the manual gas extraction valve.

[0035] Optionally, the gas extraction mounting seat includes the upper cover of the gas relay and the inner adapter;

[0036] The outer adapter is internally connected with the inner adapter, and the outer adapter is connected to the upper cover of the gas relay through the inner adapter;

[0037] A gas extraction pipe is arranged between the inner adapter and the outer adapter.

[0038] From the above technical solutions, it can be seen that the present utility model has the following advantages:

[0039] A gas monitoring device for gas, provided by the present utility model, includes a gas extraction mechanism and a sensing mechanism installed on a gas relay; the sensing mechanism includes an ultrasonic sensing component, an acetylene sensing component, and a hydrogen sensing component; the gas extraction mechanism is installed with the ultrasonic sensing component, the acetylene sensing component, and the hydrogen sensing component; gas is extracted through the gas extraction mechanism installed on the gas relay, and then the liquid level is monitored through the ultrasonic sensing component installed on the gas extraction mechanism, the acetylene is monitored through the acetylene sensing component, and the hydrogen content is monitored through the hydrogen sensing component; the present utility model respectively monitors the liquid level, acetylene, and hydrogen in the gas, realizes multiple monitoring of the gas, improves the monitoring efficiency; and solves the technical problem that the existing monitoring device cannot perform multiple monitoring of the gas at the same time, resulting in low monitoring efficiency. Description of the Drawings

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0041] Figure 1 It is a cross-sectional view of the gas monitoring device for gas in the embodiment of the present utility model;

[0042] Figure 2 It is a front view of the gas monitoring device for gas in the embodiment of the present utility model;

[0043] Among them, the meanings of the reference numerals are as follows:

[0044] 1. Ultrasonic sensor signal line; 2. Ultrasonic sensor; 3. Acetylene sensor signal line; 4. Acetylene sensor; 5. Solenoid valve; 6. Gas sampling mechanism; 7. Ultrasonic sensor compression cap; 8. Two-way joint; 9. Acetylene sensor compression cap; 10. First protective sleeve; 11. First signal line connection port; 12. First connector; 13. Second signal line connection port; 14. Second connector; 15. Second protective sleeve; 16. Ultrasonic joint; 17. Hydrogen sensor; 18. Acetylene joint; 19. Manual gas sampling valve; 20. Upper adapter; 21. Gas collecting pipe; 22. Hydrogen joint; 23. Outer adapter; 24. Inner adapter; 25. Upper cover of gas relay; 26. Gas sampling pipe; 27. Manual gas sampling knob; 28. Outer connection port. Detailed implementation

[0045] An embodiment of the present utility model provides a gas monitoring device for solving the technical problem that the existing monitoring device cannot simultaneously perform multiple monitoring on gas and has low monitoring efficiency.

[0046] In order to make the utility model purpose, features and advantages of the present utility model more obvious and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of the present utility model.

[0047] Please refer to Figure 1 and Figure 2 , a gas monitoring device provided by the present utility model includes a gas sampling mechanism and a sensing mechanism installed on a gas relay;

[0048] The sensing mechanism includes an ultrasonic sensing component, an acetylene sensing component and a hydrogen sensing component;

[0049] The gas sampling mechanism is installed with an ultrasonic sensing component, an acetylene sensing component and a hydrogen sensing component.

[0050] It should be noted that gas is sampled through the gas sampling mechanism installed on the gas relay, and then the liquid level is monitored through the ultrasonic sensing component installed on the gas sampling mechanism, the acetylene is monitored through the acetylene sensing component, and the hydrogen content is monitored through the hydrogen sensing component; the present utility model respectively monitors the liquid level, acetylene and hydrogen in the gas, realizes multiple monitoring of the gas at the same time, and improves the monitoring efficiency; solves the technical problem that the existing monitoring device cannot simultaneously perform multiple monitoring on the gas and has low monitoring efficiency.

[0051] Please refer toFigure 1 and Figure 2 Figure 2 , a gas monitoring device provided by the present utility model, the gas sampling mechanism includes a gas sampling mounting base, a gas collecting pipe 21, and an upper end adapter 20;

[0052] The gas relay is provided with a gas sampling mounting base;

[0053] One end of the gas collecting pipe 21 is connected to the gas sampling mounting base through an external adapter 23;

[0054] The other end of the gas collecting pipe 21 is provided with an upper end adapter 20.

[0055] It should be noted that during use, it is fixed on the gas relay through the gas sampling mounting base, thereby fixing the monitoring device on the gas relay; the inside of the gas collecting pipe 21 has a structure that is vertically through, and gas can move inside the gas collecting pipe 21; the bottom end of the gas collecting pipe 21 is connected to the gas sampling mounting base through an external adapter 23; the top end of the gas collecting pipe 21 is provided with an upper end adapter 20.

[0056] Please refer to Figure 1 and Figure 2 Figure 2 , a gas monitoring device provided by the present utility model, the ultrasonic sensing component is connected to the upper end adapter 20 through an ultrasonic connector 16.

[0057] The ultrasonic sensing component includes an ultrasonic sensor 2 and an ultrasonic sensor compression cap 7;

[0058] The ultrasonic sensor 2 is installed on the upper end of the upper end adapter 20 through an ultrasonic connector 16;

[0059] The upper end of the ultrasonic sensor 2 is connected with an ultrasonic sensor signal line 1 through an ultrasonic sensor compression cap 7;

[0060] The upper end of the ultrasonic sensor compression cap 7 is provided with a first signal line connection port 11;

[0061] The ultrasonic sensor signal line 1 is arranged in the first signal line connection port 11 through a first connecting piece 12;

[0062] The outer side of the upper end of the ultrasonic sensor signal line 1 is provided with a first protective sleeve 10;

[0063] The top ends of the ultrasonic sensor signal line 1 and the first protective sleeve 10 are inserted into the first connecting piece 12.

[0064] It should be noted that the upper end of the gas collecting pipe 21 is sleeved on the lower end of the upper end adapter 20, and a fixed washer is provided between the gas collecting pipe 21 and the upper end adapter 20; the ultrasonic sensor 2 is connected to the top of the gas sampling mechanism 6 through the ultrasonic joint 16, and the ultrasonic sensor cap 7 is arranged at the upper end of the ultrasonic joint 16. Among them, the lower end of the ultrasonic joint 16 is arranged inside the upper end adapter 20, and the ultrasonic sensor 2 is arranged at the upper end of the upper end adapter 20.

[0065] A first signal line connection port 11 is provided at the upper end of the ultrasonic sensor cap 7, and the ultrasonic sensor signal line 1 is arranged inside the first signal line connection port 11 through the first connecting piece 12; a first protective sleeve 10 is arranged on the outer side of the upper end of the ultrasonic sensor signal line 1, and the top ends of the ultrasonic sensor signal line 1 and the first protective sleeve 10 are inserted into the first connecting piece 12.

[0066] During use, the gas enters the gas collecting pipe 21 through the gas sampling pipe 26 and is monitored by the ultrasonic sensor 2. The ultrasonic pulse signal emitted by the ultrasonic probe propagates in the gas and is reflected after encountering the interface between the gas and the oil level. After receiving the echo signal, the propagation time of the ultrasonic wave back and forth is calculated, and then the distance or the liquid level height can be converted. The ultrasonic wave signal is converted into an electrical signal, and the monitoring data is transmitted to the external processing device through the ultrasonic sensor signal line 1.

[0067] Please refer to Figure 1 and Figure 2 , for a gas monitoring device provided by the present utility model, the hydrogen sensing component includes a hydrogen sensor 17 and a hydrogen joint 22;

[0068] The hydrogen sensor 17 is connected to the gas collecting pipe 21 through the hydrogen joint 22.

[0069] It should be noted that the side of the gas collecting pipe 21 is connected with a hydrogen sensor 17 through the hydrogen joint 22. During use, the hydrogen sensor 17 can monitor the hydrogen content in the gas. The hydrogen sensor 17 adopts the electrochemical principle and measures the hydrogen concentration by measuring the current generated by the oxidation-reduction reaction of hydrogen on the electrode.

[0070] Please refer to Figure 1 and Figure 2 , for a gas monitoring device provided by the present utility model, the acetylene sensing component is connected to the upper end adapter 20 through a two-way joint 8.

[0071] The acetylene sensing component includes an acetylene sensor 4 and an acetylene joint 18;

[0072] The acetylene sensor 4 is connected to one end of the two-way joint 8 through the acetylene joint 18;

[0073] The other end of the two-way joint 8 is connected to one side of the upper end adapter 20;

[0074] The two-way joint 8 is provided with a solenoid valve 5.

[0075] The upper end of the acetylene sensor 4 is connected with an acetylene sensor signal line 3 through an acetylene sensor gland 9;

[0076] The upper end of the acetylene sensor gland 9 is provided with a second signal line connection port 13;

[0077] The acetylene sensor signal line 3 is arranged in the second signal line connection port 13 through a second connecting piece 14;

[0078] The outer side of the upper end of the acetylene sensor signal line 3 is provided with a second protective sleeve 15;

[0079] The top ends of the acetylene sensor signal line 3 and the second protective sleeve 15 are inserted into the second connecting piece 14.

[0080] It should be noted that the acetylene sensor 4 is connected to the top end of the two-way joint 8 through an acetylene joint 18, and the acetylene sensor gland 9 is arranged at the upper end of the acetylene joint 18. Among them, the lower end of the acetylene joint 18 is arranged in the two-way joint 8, and the acetylene sensor 4 is arranged at the upper end of the two-way joint 8.

[0081] The solenoid valve 5 is located on the two-way joint 8, can control the gas, and controls the position of the valve core through the electromagnetic force generated by the electromagnetic coil, so as to cut off or connect the gas, change the direction of fluid flow, and adjust the direction, flow rate, speed and other parameters of the gas to ensure the stable operation of the system.

[0082] The upper end of the acetylene sensor gland 9 is provided with a second signal line connection port 13, and the acetylene sensor signal line 3 is arranged in the second signal line connection port 13 through a second connecting piece 14; the outer side of the upper end of the acetylene sensor signal line 3 is provided with a second protective sleeve 15, and the top ends of the acetylene sensor signal line 3 and the second protective sleeve 15 are inserted into the second connecting piece 14.

[0083] During use, the gas enters the gas collecting pipe 21 through the gas extraction pipe 26, the gas entering the two-way joint 8 is controlled and adjusted by the solenoid valve 5, the acetylene sensor 4 monitors, and the acetylene sensor 4 calculates its concentration by measuring the current generated by the acetylene gas on the electrode, and the monitoring data is transmitted to the external processing device through the acetylene sensor signal line 3.

[0084] Please refer to Figure 1 and Figure 2 , on the other side of the upper adapter 20 of the gas monitoring device provided by the present utility model, a manual gas extraction valve 19 is provided, and the manual gas extraction valve 19 is inserted into the upper adapter 20;

[0085] The manual gas extraction valve 19 is provided with an external connection port 28;

[0086] The external connection port 28 is vertically arranged with the manual gas extraction knob 27 of the manual gas extraction valve 19.

[0087] It should be noted that the left and right ends of the upper adapter 20 are connected to the manual gas extraction valve 19 and the two-way joint 8, and the upper and lower ends of the upper adapter 20 are connected to the ultrasonic joint 16 and the gas collecting pipe 21. Among them, the inside of the upper adapter 20 is a communicating structure. One end of the manual gas extraction valve 19 is inserted into the upper adapter 20. The manual gas extraction valve 19 includes a manual gas extraction knob 27 and an external connection port 28. The manual gas extraction knob 27 and the external connection port 28 are vertically arranged, and the external connection port 28 is arranged on the side of the manual gas extraction valve 19. During use, the manual gas extraction valve 19 can extract the gas in the gas collecting pipe 21 and further discharge the excess gas through the external connection port 28.

[0088] Please refer to Figure 1 and Figure 2 For a gas monitoring device provided by the present utility model, the gas extraction mounting seat includes a gas relay upper cover 25 and an inner adapter 24;

[0089] An inner adapter 24 is connected inside the outer adapter 23, and the outer adapter 23 is connected to the gas relay upper cover 25 through the inner adapter 24;

[0090] A gas extraction pipe 26 is arranged between the inner adapter 24 and the outer adapter 23.

[0091] It should be noted that the outer adapter 23 is arranged at the lower end of the gas collecting pipe 21. An inner adapter 24 is connected inside the outer adapter 23, and the inner adapter 24 connects the outer adapter 23 and the gas relay upper cover 25; two gas extraction pipes 26 are arranged inside the outer adapter 23 and the inner adapter 24. Among them, the inside of the outer adapter 23 and the inner adapter 24 is a vertically through structure. A gasket is arranged on the outer ring at the upper end of the outer adapter 23, which can fix the inner ring of the gas collecting pipe 21 at the upper end of the outer adapter 23. The upper end of the inner adapter 24 is inserted through the lower end of the outer adapter 23. The lower end of the inner adapter 24 is provided with a fixing structure protruding to both sides. The inner adapter 24 is fixed on the gas relay upper cover 25 through the fixing structures on both sides, and a fixing gasket is arranged between the inner adapter 24 and the gas relay upper cover 25. That is, for the monitoring device of the present utility model, the upper structure is fixed on the gas relay through the inner adapter 24 and the outer adapter 23.

[0092] The gas extraction pipe 26 is respectively arranged in the outer adapter 23 and the inner adapter 24 in a staggered manner. Specifically, the left gas extraction pipe 26 is inserted into the inner adapter 24 and the outer adapter 23 from the lower end in sequence and enters the gas collecting pipe 21. The upper end of the gas extraction pipe 26 is located in the gas collecting pipe 21, and the lower end of the gas extraction pipe 26 and the lower end of the inner adapter 24 are on the same horizontal plane. The right gas extraction pipe 26 is inserted into the upper cover 25 of the gas relay and the inner adapter 24 from the lower end in sequence, and the upper end of the gas extraction pipe 26 and the upper end of the inner adapter 24 are on the same horizontal plane. The lower end of the gas extraction pipe 26 extends out of the upper cover 25 of the gas relay. The two gas extraction pipes 26 arranged in a staggered manner can increase the gas extraction efficiency and the gas extraction effect.

[0093] When the monitoring device works, the gas enters the gas collecting pipe 21 through the gas extraction pipe 26 at the lower end. The hydrogen sensor 17 on the side of the gas collecting pipe 21 monitors the hydrogen content. At the same time, the gas respectively passes through the upper adapter 20 to the ultrasonic sensor 2 and the acetylene sensor 4 for liquid level and acetylene monitoring.

[0094] The hydrogen sensor 17 is arranged on the side of the gas collecting pipe 21 through the hydrogen joint 22. The ultrasonic sensor 2 and the acetylene sensor 4 are respectively arranged on the upper adapter 20 through the ultrasonic joint 16 and the acetylene joint 18, which is convenient for disassembling the problematic sensors, making the replacement of the monitoring device more convenient and fast. The monitoring device can continue to be used after replacing the broken sensors, which can increase the service life of the device.

[0095] It is worth mentioning that the monitoring device has a simple and compact structure, is easy to install, and has strong adaptability.

[0096] Although the preferred embodiments of the embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present application.

[0097] Finally, it should also be noted that in this article, relational terms such as first and second

[0098] It is only used to distinguish one entity or operation from another entity or operation, and does not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or terminal device. Without more limitations, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or terminal device comprising the said element.

[0099] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions recorded in the embodiments of the present application.

Claims

1. A gas monitoring device, characterized in that: It includes a gas intake mechanism (6) and a sensor mechanism installed on a gas relay; The sensing mechanism includes an ultrasonic sensing component, an acetylene sensing component and a hydrogen sensing component; The air extraction mechanism is equipped with the ultrasonic sensor component, the acetylene sensor component and the hydrogen sensor component.

2. The gas monitoring device according to claim 1, characterized in that: The air intake mechanism (6) comprises an air intake mounting seat, an air collecting pipe (21) and an upper end adapter (20); The gas relay is provided with the gas extraction mounting seat; One end of the gas collecting pipe (21) is connected to the gas intake mounting seat via an external adapter (23); The other end of the gas collecting pipe (21) is provided with the upper end adapter (20).

3. The gas monitoring device according to claim 2, characterized in that: The ultrasonic sensor assembly is connected to the upper end adapter (20) via an ultrasonic connector (16).

4. The methane gas monitoring device according to claim 3, characterized in that: The ultrasonic sensor assembly comprises an ultrasonic sensor (2) and an ultrasonic sensor pressure cap (7); The ultrasonic sensor (2) is mounted on the upper end of the upper end adapter (20) via the ultrasonic connector (16); The upper end of the ultrasonic sensor (2) is connected to an ultrasonic sensor signal line (1) via the ultrasonic sensor pressure cap (7); The upper end of the ultrasonic sensor pressure cap (7) is provided with a first signal line connection port (11); The ultrasonic sensor signal line (1) is arranged in the first signal line connection port (11) via a first connection piece (12); A first protective cover (10) is provided on the outer side of the upper end of the ultrasonic sensor signal line (1); The ultrasonic sensor signal line (1) and the top end of the first protective sleeve (10) are inserted into the first connecting piece (12).

5. The gas monitoring device according to claim 2, characterized in that: The hydrogen sensing assembly comprises a hydrogen sensor (17) and a hydrogen connector (22); The hydrogen sensor (17) is connected to the gas collecting pipe (21) via the hydrogen connector (22).

6. The gas monitoring device according to claim 2, characterized in that: The acetylene sensor assembly is connected to the upper end adapter (20) via a two-way connector (8).

7. The gas monitoring device according to claim 6, characterized in that: The acetylene sensing assembly comprises an acetylene sensor (4) and an acetylene connector (18); The acetylene sensor (4) is connected to one end of the two-way connector (8) via the acetylene connector (18); The other end of the two-way joint (8) is connected to one side of the upper end adapter (20); The two-way connector (8) is provided with a solenoid valve (5).

8. The methane gas monitoring device according to claim 7, characterized in that: The upper end of the acetylene sensor (4) is connected to an acetylene sensor signal line (3) via an acetylene sensor pressure cap (9); The upper end of the acetylene sensor pressure cap (9) is provided with a second signal line connection port (13); The acetylene sensor signal line (3) is arranged in the second signal line connection port (13) via a second connection piece (14); A second protective sleeve (15) is provided on the outer side of the upper end of the acetylene sensor signal line (3); The acetylene sensor signal line (3) and the top end of the second protective sleeve (15) are inserted into the second connecting piece (14).

9. The gas monitoring device according to claim 2, characterized in that: A manual air extraction valve (19) is provided on the other side of the upper end adapter (20), and the manual air extraction valve (19) is inserted into the upper end adapter (20); The manual air extraction valve (19) is provided with an external connection port (28); The external connection port (28) and the manual air extraction knob (27) of the manual air extraction valve (19) are arranged vertically.

10. The gas monitoring device according to claim 2, characterized in that: The gas extraction mounting seat comprises a gas relay upper cover (25) and an inner adapter (24); The inner transfer joint (24) is connected to the outer transfer joint (23), and the outer transfer joint (23) is connected to the upper cover (25) of the gas relay via the inner transfer joint (24); An air intake pipe (26) is provided between the inner rotating joint (24) and the outer rotating joint (23).

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