Monitoring system

Abstract

The utility model provides a monitoring system which comprises a detection pipeline provided with a detection inlet and a detection outlet, and the detection inlet is used for being communicated with an oxygen port of a detected device; the pressure regulating assembly is arranged on the detection pipeline, the pressure regulating assembly is provided with a pressurization pipeline and a depressurization pipeline which are arranged in parallel, the pressurization pipeline and the depressurization pipeline are both communicated with the detection pipeline, and the pressure regulating assembly is further provided with a pressure meter which is arranged close to the detection inlet and located on the upstream of the pressurization pipeline and the depressurization pipeline; the pressure gauge is used for detecting fluid pressure in the detection pipeline; the detection assembly comprises a hydrogen detector, the hydrogen detector is arranged on the detection pipeline and located between the pressure regulating assembly and the detection outlet, and the hydrogen detector is used for detecting the content of hydrogen discharged from the oxygen port. According to the technical scheme provided by the utility model, the problem that a hydrogen monitoring system in the prior art cannot meet different pressure working conditions of an electrolysis system can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas concentration detection, and in particular to a monitoring system. Background Technique

[0002] As a zero-carbon and green secondary energy source, hydrogen energy is an important way to facilitate the large-scale application of renewable energy. In recent years, the industrialization of PEM hydrogen production has developed rapidly. Based on the characteristics of the electrolytic water hydrogen production device itself and the strong hydrogen permeability, the oxygen purity in hydrogen is generally better than the hydrogen purity in oxygen. Therefore, the hydrogen purity in oxygen is used as the most important indicator to measure the safety of the electrolysis system in the industry, and it needs to be monitored in real time. When the content reaches 4%, there is a risk of explosion. To ensure the safety of the hydrogen production process, it is necessary to monitor the hydrogen content in oxygen.

[0003] When monitoring electrolysis systems under different pressure conditions, the sampling of the hydrogen monitoring system and the fluid pressure in the pipeline will also be different. The monitoring systems in the prior art usually cannot change the internal pressure of the pipeline in the system to adapt to different pressure conditions, which will affect the normal progress of the experiment and further affect the accuracy of hydrogen content detection. Summary of the Utility Model

[0004] The utility model provides a monitoring system to solve the problem that the hydrogen monitoring system in the prior art cannot meet different pressure conditions of the electrolysis system.

[0005] The utility model provides a monitoring system, which includes: a detection pipeline with a detection inlet and a detection outlet, and the detection inlet is used to communicate with the oxygen port of the device to be detected; a pressure regulating component arranged on the detection pipeline, the pressure regulating component has a pressurizing pipeline and a pressure reducing pipeline arranged in parallel, both the pressurizing pipeline and the pressure reducing pipeline are communicated with the detection pipeline, the pressure regulating component also has a pressure gauge, the pressure gauge is arranged close to the detection inlet and is located upstream of the pressurizing pipeline and the pressure reducing pipeline, and the pressure gauge is used to detect the fluid pressure in the detection pipeline; a detection component, including a hydrogen detector, the hydrogen detector is arranged on the detection pipeline and is located between the pressure regulating component and the detection outlet, and the hydrogen detector is used to detect the hydrogen content discharged from the oxygen port; wherein, when the fluid pressure detected by the pressure gauge is lower than the first preset pressure, the pressurizing pipeline is communicated with the detection pipeline to increase the fluid pressure in the detection pipeline through the pressurizing pipeline; when the fluid pressure detected by the pressure gauge is higher than the second preset pressure, the pressure reducing pipeline is communicated with the detection pipeline to reduce the fluid pressure in the detection pipeline through the pressure reducing pipeline.

[0006] Further, the hydrogen detector is a catalytic combustion type hydrogen detector.

[0007] Further, the monitoring system further includes a dehumidification component disposed on the detection pipeline. The dehumidification component includes a gas-liquid separation tank and a condenser. The gas-liquid separation tank is located between the detection inlet and the pressure gauge, and the condenser is located between the pressure regulating component and the detection component.

[0008] Further, the dehumidification component further includes a water arrester disposed on the detection pipeline, and the water arrester is located between the condenser and the detection component.

[0009] Further, the detection component further includes a flow meter disposed on the detection pipeline, and the flow meter is located between the water arrester and the hydrogen detector.

[0010] Further, the pressure regulating component further includes a pressure regulating bypass which is connected in parallel with the pressurizing pipeline and the depressurizing pipeline. When the pressurizing pipeline is connected to the detection pipeline, the pressure regulating bypass is used to reduce the fluid pressure in the detection pipeline.

[0011] Further, the pressure regulating component further includes a three-way valve, a booster pump and a pressure reducing valve. The booster pump is disposed on the pressurizing pipeline, the pressure reducing valve is disposed on the depressurizing pipeline, and the three-way valve is disposed at the connection of the detection pipeline with the pressurizing pipeline and the depressurizing pipeline.

[0012] Further, one end of the pressure regulating bypass is connected to the pressurizing pipeline and is located upstream of the booster pump, the other end of the pressure regulating bypass is connected to the pressurizing pipeline and is located downstream of the booster pump, and a regulating valve is disposed on the pressure regulating bypass.

[0013] Further, the monitoring system further includes a flame arrester disposed on the detection pipeline, and flame arresters are disposed at positions of the detection pipeline close to the detection inlet and the detection outlet.

[0014] Further, the monitoring system further includes a calibration gas pipeline which is connected to the detection pipeline, and the connection of the calibration gas pipeline with the detection pipeline is located between the water arrester and the flow meter.

[0015] Further, the monitoring system further includes a cabinet body, at least part of the detection pipeline is arranged inside the cabinet body, and both the pressure regulating component and the detection component are arranged inside the cabinet body.

[0016] Applying the technical solution of the present utility model, the pressure gauge is arranged close to the detection inlet to detect the fluid pressure value at the detection inlet. When the fluid pressure detected by the pressure gauge is lower than the first preset pressure or higher than the second preset pressure, the detection pipeline can be connected to the pressurizing pipeline or the depressurizing pipeline to correspondingly adjust the fluid pressure at the detection inlet, so that the fluid can smoothly flow into the detection pipeline and enter the hydrogen detector to complete the detection of the hydrogen content. Through the above settings, when the monitoring system measures different devices to be detected, the detection pipeline is correspondingly adjusted by the pressure component, so that the monitoring system can meet the tests of different pressure complex working conditions, greatly improving the adaptability and practicability of the monitoring system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0018] Figure 1 A schematic structural diagram of the monitoring system provided by the present utility model is shown.

[0019] Among them, the above-mentioned drawings include the following reference numerals:

[0020] 10. Detection pipeline; 11. Detection inlet; 12. Detection outlet;

[0021] 21. Boosting pipeline; 22. Pressure-reducing pipeline; 23. Pressure gauge; 24. Pressure-regulating bypass; 25. Three-way valve; 26. Boosting pump; 27. Pressure-reducing valve; 28. Control valve;

[0022] 31. Hydrogen detector; 32. Flowmeter; 33. Alarm;

[0023] 41. Gas-liquid separation tank; 411. Ball valve; 42. Condenser; 422. Peristaltic pump; 43. Water arrester;

[0024] 51. Flame arrester;

[0025] 60. Standard gas pipeline;

[0026] 70. Cabinet; 71. Ferrule;

[0027] 81. First switch; 82. Second switch; 83. Junction box. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying 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 of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way constitutes a limitation to the present utility model and its application or use. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] As Figure 1As shown in the figure, an embodiment of the present utility model provides a monitoring system, which includes a detection pipeline 10, a pressure regulating component, and a detection component. Among them, the detection pipeline 10 has a detection inlet 11 and a detection outlet 12, and the detection inlet 11 is used to communicate with the oxygen port of the device to be detected. The pressure regulating component is arranged on the detection pipeline 10. The pressure regulating component has a parallel-connected pressurizing pipeline 21 and a pressure-reducing pipeline 22. Both the pressurizing pipeline 21 and the pressure-reducing pipeline 22 are connected to the detection pipeline 10. The pressure regulating component also has a pressure gauge 23, which is arranged close to the detection inlet 11 and is located upstream of the pressurizing pipeline 21 and the pressure-reducing pipeline 22. The pressure gauge 23 is used to detect the fluid pressure in the detection pipeline 10. The detection component includes a hydrogen detector 31, which is arranged on the detection pipeline 10 and is located between the pressure regulating component and the detection outlet 12. The hydrogen detector 31 is used to detect the hydrogen content discharged from the oxygen port.

[0030] Among them, when the fluid pressure detected by the pressure gauge 23 is lower than the first preset pressure, the pressurizing pipeline 21 is connected to the detection pipeline 10 to increase the fluid pressure in the detection pipeline 10 through the pressurizing pipeline 21; when the fluid pressure detected by the pressure gauge 23 is higher than the second preset pressure, the pressure-reducing pipeline 22 is connected to the detection pipeline 10 to reduce the fluid pressure in the detection pipeline 10 through the pressure-reducing pipeline 22, where the second preset pressure is higher than the first preset pressure, and the parameters of the first preset pressure and the second preset pressure can be set according to different application scenarios.

[0031] Applying the technical solution of the present utility model, the pressure gauge 23 is arranged close to the detection inlet 11 to detect the fluid pressure value at the detection inlet 11. When the fluid pressure detected by the pressure gauge 23 is lower than the first preset pressure or higher than the second preset pressure, the detection pipeline 10 can be connected to the pressurizing pipeline or the pressure-reducing pipeline to correspondingly adjust the fluid pressure at the detection inlet 11, so that the fluid can smoothly flow into the detection pipeline 10 and enter the hydrogen detector 31 to complete the detection of the hydrogen content. Through the above settings, when the monitoring system measures different devices to be detected, the pressure component makes corresponding adjustments to the detection pipeline 10, so that the monitoring system can meet the tests of different pressure complex working conditions, greatly improving the adaptability and practicability of the monitoring system.

[0032] Specifically, the hydrogen detector 31 is a catalytic combustion type hydrogen detector. Compared with the electrochemically sensitive detection in the prior art: through the current change generated by the oxidation-reduction reaction of hydrogen on the electrode, the presence of water vapor or liquid water may cause other chemical reactions, thereby affecting the current change, and the electrode is consumed relatively quickly; thermal conductivity sensing detection: according to the thermal conductivity of the gas to measure the concentration of hydrogen, the thermal conductivity of water vapor is different from that of water, so it will also have a greater impact on the detection result, and at the same time the equipment cost is relatively high. The working principle of the catalytic combustion type hydrogen detector is to utilize the heat generated when the combustible gas burns under the action of the catalyst, causing the temperature change in the detector to judge the hydrogen content, with a lower sensitivity to the water content, and thus compared with the electrochemically sensitive detection and thermal conductivity sensing detection, the requirement for the water content in the gas is lower, so the detection accuracy of the hydrogen content is higher, and there is no need for frequent replacement of the equipment, and the cost is lower.

[0033] Among them, the pressure regulating assembly further includes a pressure regulating bypass 24. The pressure regulating bypass 24 is connected in parallel with the pressurizing pipeline 21 and the pressure reducing pipeline 22. When the pressurizing pipeline 21 is communicated with the detection pipeline 10, the pressure regulating bypass 24 is used to reduce the fluid pressure in the detection pipeline 10. If the flow rate of the fluid in the detection pipeline 10 is too large and the pressure is too high when the gas enters through the pressurizing pipeline 21, the downstream detection assembly will bear too much pressure and even be damaged. Through the above settings, the pressure regulating bypass 24 is connected in parallel with the pressurizing pipeline, and the excessive fluid can flow out from the pressure regulating bypass 24 to adjust the fluid flow rate in the detection pipeline 10, thereby ensuring that the fluid pressure in the detection pipeline 10 remains normal, so as to effectively protect the detection assembly and enable the detection assembly to work properly.

[0034] In the present application, the monitoring system further includes a dehumidifying assembly. The dehumidifying assembly is arranged on the detection pipeline 10. The dehumidifying assembly includes a gas-liquid separation tank 41 and a condenser 42. The gas-liquid separation tank 41 is located between the detection inlet 11 and the pressure gauge 23, and the condenser 42 is located between the pressure regulating assembly and the detection assembly. A large amount of water vapor is generated during the electrolysis of water. The water vapor will be liquefied into liquid water in the detection pipeline 10. If it enters the hydrogen detector 31 without treatment, it will not only affect the accuracy of the hydrogen content test, but also reduce the service life of the hydrogen detector 31. Through the above settings, after the fluid enters the detection pipeline 10 from the detection inlet 11, it will first enter the gas-liquid separation tank 41 to remove the part of the water vapor generated by the electrolysis of water that has been initially condensed into liquid water, and then pass through the condenser 42 for secondary dehumidification, thus greatly reducing the water content in the fluid.

[0035] Among them, the gas-liquid separation tank 41 is a visible glass tank, so that the volume of the generated liquid water can be clearly observed. The gas-liquid separation tank 41 is connected with a ball valve 411, and the generated liquid water can be discharged in time. The condenser 42 is an electronic condenser, which can cool the fluid to a minimum of 5°C, thereby further dehumidifying the fluid and improving the reliability and stability of dehumidification. The condenser 42 is connected with a peristaltic pump 422, and the condensed liquid can be discharged through the peristaltic pump 422. With the above settings, the structure is simple, and there is no need to frequently replace the dehumidification component, saving the test cost.

[0036] In other embodiments of the present application, the dehumidification component may further include a drying member to dehumidify the fluid.

[0037] In the present application, the dehumidification component further includes a water arrester 43, which is arranged on the detection pipeline 10, and the water arrester 43 is located between the condenser 42 and the detection component. Through the above settings, the water arrester 43 can perform three-stage dehumidification on the fluid, further reducing the water content of the fluid before entering the detection component, preventing liquid water from entering the detection component and causing damage, and meeting the high-humidity working conditions.

[0038] In the present application, the hydrogen detector 31 adopts a catalytic combustion type hydrogen detector, which has a low requirement for water content and can measure the hydrogen content accurately without drying the fluid. Therefore, there is no need to set a drying member in the dehumidification component. In this way, there is no need to frequently replace the drying member, saving costs, and there is no need to worry about the impact on the hydrogen content detection due to untimely replacement, greatly improving the operation convenience.

[0039] The water arrester 43 in the present application is made of PTFE material, which can filter dust above 1μm and can prevent 100% liquid water from passing through. While blocking water, it can also filter impurity dust, further improving the detection accuracy of the hydrogen detector 31.

[0040] Specifically, the detection component further includes a flow meter 32, which is arranged on the detection pipeline 10, and the flow meter 32 is located between the water arrester 43 and the hydrogen detector 31. The flow meter 32 can detect the fluid flow rate upstream of the hydrogen detector. In this way, when the fluid flow rate detected by the flow meter 32 exceeds the experimental predetermined standard, the control valve 28 on the pressure regulating bypass 24 is opened to return part of the fluid to the front end of the system, avoiding excessive fluid flow rate from causing too much pressure on the hydrogen detector 31, ensuring the normal operation of the hydrogen detector 31, and improving the service life of the hydrogen detector 31.

[0041] Furthermore, the detection component further includes an alarm 33. When the hydrogen concentration detected by the hydrogen detector 31 reaches or exceeds the alarm point set by the alarm 33, the alarm 33 emits an alarm signal, further improving the safety of the system.

[0042] In the present application, the pressure regulating assembly further includes a three-way valve 25, a booster pump 26, and a pressure reducing valve 27. The booster pump 26 is arranged on the boosting pipeline 21, the pressure reducing valve 27 is arranged on the pressure reducing pipeline 22, and the three-way valve 25 is arranged at the connection of the detection pipeline 10 with the boosting pipeline 21 and the pressure reducing pipeline 22. The three-way valve 25 can realize the selectable connection between the detection inlet 11 and the detection assembly with the boosting pipeline 21 and the pressure reducing pipeline 22. When the pressure at the detection inlet 11 is relatively low and air intake from the boosting pipeline 21 is required, one end of the boosting pipeline 21 is connected to the detection inlet 11 through the three-way valve 25, and the other end of the boosting pipeline 21 is connected to the detection assembly. When the pressure at the detection inlet 11 is relatively high and air intake from the pressure reducing pipeline 22 is required, one end of the pressure reducing pipeline 22 is connected to the detection inlet 11 through the three-way valve 25, and the other end of the pressure reducing pipeline 22 is connected to the detection assembly. In this way, when there is fluid flowing in one of the boosting pipeline 21 and the pressure reducing pipeline 22, there is no need to additionally set up a blocking device to block the other pipeline, avoiding system redundancy and simplifying the switching operation of different pipelines at the same time.

[0043] Specifically, the booster pump 26 can be set as an air extraction pump. When the fluid pressure at the detection inlet 11 is too small, the fluid is pumped into the detection pipeline 10 by means of pump suction for subsequent experiments.

[0044] Wherein, one end of the pressure regulating bypass 24 is connected to the boosting pipeline 21 and is located upstream of the booster pump 26, the other end of the pressure regulating bypass 24 is connected to the boosting pipeline 21 and is located downstream of the booster pump 26, and a regulating valve 28 is arranged on the pressure regulating bypass 24. Through the above setting, when the fluid pressure in the boosting pipeline 21 is too high, the regulating valve 28 can be opened, and the fluid directly flows back from the downstream of the booster pump 26 to the upstream of the booster pump 26 through the pressure regulating bypass 24, avoiding the influence on the detection assembly caused by the too high fluid pressure downstream of the boosting pipeline 21.

[0045] Specifically, the regulating valve 28 is a one-way valve. In the present application, the regulating valve 28 is set as a needle valve, which can not only prevent the fluid from flowing from the end of the pressure regulating bypass 24 located upstream of the booster pump 26 into the downstream of the booster pump 26, ensuring that the fluid pressure downstream of the booster pump 26 can be successfully reduced, but also can regulate the fluid flow rate passing through, improving the pressure regulating effect of the pressure regulating bypass 24.

[0046] Furthermore, the monitoring system further includes a flame arrester 51. The flame arrester 51 is arranged on the detection pipeline 10, and flame arresters 51 are arranged at positions of the detection pipeline 10 close to the detection inlet 11 and the detection outlet 12. When the hydrogen content exceeds a certain concentration, there is an explosion risk when encountering an electric spark. Through the above setting, the fluid will pass through the flame arrester 51 when entering the system and will also pass through the flame arrester 51 when discharging from the system, providing double protection for the system and improving the safety of the experiment.

[0047] In this application, the monitoring system further includes a calibration gas pipeline 60. The calibration gas pipeline 60 is connected to the detection pipeline 10, and the connection between the calibration gas pipeline 60 and the detection pipeline 10 is located between the water arrester 43 and the flowmeter 32. With the above settings, the detection accuracy of the hydrogen detector 31 can be regularly checked through the calibration gas pipeline 60 to ensure the accuracy of the hydrogen content inspection.

[0048] Among them, a three-way valve 25 is also provided at the connection between the calibration gas pipeline 60 and the detection pipeline 10, which is convenient for switching between the state of detecting the hydrogen detector 31 and the state of testing the system. This application uses oxygen with a hydrogen content of 1% concentration.

[0049] Among them, the monitoring system further includes a cabinet 70. At least part of the detection pipeline 10 is arranged inside the cabinet 70, and both the pressure regulating component and the detection component are arranged inside the cabinet 70. With the above settings, the cabinet 70 can prevent the internal components from being broken and affecting the external environment when the monitoring system explodes, further improving the safety of the device. At the same time, it can also prevent the internal components from being damaged by external impurities.

[0050] Specifically, the cabinet 70 is a single-door stainless steel explosion-proof box, and the detection pipeline 10 fixes its position relative to the cabinet 70 through a ferrule 71 to prevent the pipeline from being displaced when the fluid flows in each pipeline.

[0051] Furthermore, the monitoring system further includes a condenser, a first switch 81, a second switch 82 and a junction box 83. The first switch 81 and the second switch 82 are respectively electrically connected to the components inside the cabinet 70. The above components are all located outside the cabinet 70. With such settings, it is convenient for the operator to perform one-key control of the internal components through the switches outside the cabinet 70 without opening the cabinet door, and the operation is very simple. The junction box 83 is used to place and store cables to prevent the cables inside the cabinet 70 from being messy and winding with the pipelines.

[0052] Through the technical solution provided by this application, the following advantages are achieved:

[0053] 1. By adopting a catalytic combustion type hydrogen detector, the influence of water content is reduced, the detection accuracy of hydrogen concentration is improved, and the cost is reduced at the same time;

[0054] 2. The dehumidification component can greatly reduce the water content in the measured gas. When used in conjunction with the catalytic combustion type hydrogen detector, there is no need to frequently replace components, enabling the monitoring system to adapt to high humidity working conditions;

[0055] 3. By adding a high-pressure pipeline and a low-pressure pipeline to the detection pipeline, the monitoring system can meet working conditions with different pressures, improving the applicability of the device.

[0056] It should be noted that the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0057] Unless otherwise specifically stated, the relative arrangements of the components and steps set forth in these embodiments, numerical expressions, and numerical values do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, further discussion thereof is not required in subsequent drawings.

[0058] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. are usually based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present invention; the orientation words "inner, outer" refer to the inside and outside relative to the contour of each component itself.

[0059] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0060] In addition, it should be noted that the use of terms such as "first" and "second" to define components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present utility model.

[0061] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A monitoring system, characterized in that: The monitoring system comprises: A detection pipeline (10) having a detection inlet (11) and a detection outlet (12), wherein the detection inlet (11) is used to communicate with an oxygen port of a device to be detected; A pressure regulating assembly is arranged on the detection pipeline (10), the pressure regulating assembly comprises a pressure increasing pipeline (21) and a pressure reducing pipeline (22) arranged in parallel, the pressure increasing pipeline (21) and the pressure reducing pipeline (22) are both connected to the detection pipeline (10), the pressure regulating assembly further comprises a pressure gauge (23), the pressure gauge (23) is arranged close to the detection inlet (11) and is located upstream of the pressure increasing pipeline (21) and the pressure reducing pipeline (22), and the pressure gauge (23) is used to detect the fluid pressure in the detection pipeline (10); A detection component, comprising a hydrogen detector (31), wherein the hydrogen detector (31) is arranged on the detection pipeline (10) and is located between the pressure regulating component and the detection outlet (12), and the hydrogen detector (31) is used to detect the hydrogen content discharged from the oxygen outlet; When the fluid pressure detected by the pressure gauge (23) is lower than a first preset pressure, the boosting pipeline (21) is connected to the detection pipeline (10) so as to increase the fluid pressure in the detection pipeline (10) through the boosting pipeline (21); when the fluid pressure detected by the pressure gauge (23) is higher than a second preset pressure, the reducing pressure pipeline (22) is connected to the detection pipeline (10) so as to reduce the fluid pressure in the detection pipeline (10) through the reducing pressure pipeline (22).

2. The monitoring system according to claim 1, characterized in that: The hydrogen detector (31) is a catalytic combustion type hydrogen detector.

3. The monitoring system according to claim 1, characterized in that: The monitoring system further comprises a dehumidification component, which is arranged on the detection pipeline (10). The dehumidification component comprises a gas-liquid separation tank (41) and a condenser (42). The gas-liquid separation tank (41) is located between the detection inlet (11) and the pressure gauge (23), and the condenser (42) is located between the pressure regulating component and the detection component.

4. The monitoring system according to claim 3, characterized in that: The dehumidification component further comprises a water stopper (43) which is arranged on the detection pipeline (10), and the water stopper (43) is located between the condenser (42) and the detection component.

5. The monitoring system according to claim 4, characterized in that: The detection assembly further comprises a flow meter (32) which is arranged on the detection pipeline (10), and the flow meter (32) is located between the water stop (43) and the hydrogen detector (31).

6. The monitoring system according to claim 1, characterized in that: The pressure regulating assembly further comprises a pressure regulating bypass (24), wherein the pressure regulating bypass (24) is connected in parallel with the pressure boosting pipeline (21) and the pressure reducing pipeline (22), and when the pressure boosting pipeline (21) is connected with the detection pipeline (10), the pressure regulating bypass (24) is used to reduce the fluid pressure in the detection pipeline (10).

7. The monitoring system according to claim 6, characterized in that: The pressure regulating assembly further comprises a three-way valve (25), a boosting pump (26) and a pressure reducing valve (27); the boosting pump (26) is arranged on the boosting pipeline (21); the pressure reducing valve (27) is arranged on the pressure reducing pipeline (22); and the three-way valve (25) is arranged at the connection between the detection pipeline (10) and the boosting pipeline (21) and the pressure reducing pipeline (22).

8. The monitoring system according to claim 7, characterized in that: One end of the pressure regulating bypass (24) is connected to the boosting pipeline (21) and is located upstream of the boosting pump (26), and the other end of the pressure regulating bypass (24) is connected to the boosting pipeline (21) and is located downstream of the boosting pump (26). A regulating valve (28) is provided on the pressure regulating bypass (24).

9. The monitoring system according to claim 1, characterized in that: The monitoring system further comprises a flame arrester (51), wherein the flame arrester (51) is arranged on the detection pipeline (10), and the flame arrester (51) is arranged at positions of the detection pipeline (10) close to the detection inlet (11) and the detection outlet (12).

10. The monitoring system according to claim 5, characterized in that: The monitoring system further comprises a standard gas pipeline (60), wherein the standard gas pipeline (60) is in communication with the detection pipeline (10), and a connection point between the standard gas pipeline (60) and the detection pipeline (10) is located between the water stop (43) and the flow meter (32).

11. The monitoring system according to claim 1, characterized in that: The monitoring system further comprises a cabinet (70), at least a portion of the detection pipeline (10) is arranged inside the cabinet (70), and the pressure regulating component and the detection component are both arranged inside the cabinet (70).

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