Hydrogen detector

Abstract

The hydrogen detector comprises a water removal assembly, a flow meter, a sensor assembly, an opening adjusting valve and a gas suction pump which are sequentially connected in series, and the water removal assembly is used for removing water in tail gas exhausted from a tail gas exhaust pipe so as to reduce the water entering the sensor assembly; the flow meter, the opening adjusting valve and the air suction pump are matched, so that the flow of the hydrogen detector is maintained in a reasonable range; the sensor assembly is provided with a low-range hydrogen concentration sensor and a high-range hydrogen concentration sensor which are different in range, the low-range hydrogen concentration sensor is suitable for detecting tail gas with low hydrogen concentration, and the high-range hydrogen concentration sensor is suitable for detecting tail gas with high hydrogen concentration, so that the hydrogen detector can be suitable for detecting tail gas with high hydrogen concentration and also can be used for detecting tail gas with high hydrogen concentration. The hydrogen detector is simple in structure, can be suitable for detection of tail gas with low hydrogen concentration, has two hydrogen concentration detection ranges, and is wider in application range compared with a hydrogen detector with only one hydrogen concentration measurement range in the related technology.

Description

Technical Field

[0001] The present application relates to the technical field of new energy vehicles, and in particular to a hydrogen detector. Background Art

[0002] New energy vehicles have attracted much attention and are developing rapidly.

[0003] Hydrogen fuel vehicles among new energy vehicles use hydrogen as fuel. Hydrogen reacts chemically with oxygen in the air to generate electricity to drive the vehicle. The product of the reaction of hydrogen fuel vehicles is water, truly achieving pollution-free and zero emissions.

[0004] However, hydrogen is the gas with the smallest molecular weight, diffuses quickly, is flammable and explosive, and its concentration range for explosion in the air is 4%-75%. Therefore, ensuring the safety of hydrogen fuel vehicles is crucial.

[0005] During the operation of a hydrogen fuel cell vehicle, incompletely reacted hydrogen combines with the air in the system and is discharged from the tail pipe of the hydrogen fuel cell vehicle. If the hydrogen concentration in the exhaust gas discharged through the tail pipe is too high, there will be a risk of explosion.

[0006] The hydrogen gas detector in the related art has only one applicable scope, which is small.

[0007] Therefore, how to increase the application scope of the hydrogen detector has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0008] The present application proposes a hydrogen detector to increase the application scope of the hydrogen detector.

[0009] In order to achieve the above-mentioned object, the present application provides a hydrogen detector, comprising a water removal component, a flow meter, a sensor component, an opening regulating valve and a suction pump connected in series in sequence.

[0010] The dewatering assembly is connected to the tail pipe and is used to remove moisture from the tail gas discharged from the tail pipe.

[0011] The dewatering component is connected to the sensor component through a first pipeline, and the flow meter is arranged on the first pipeline, and the flow meter is used to collect gas flow.

[0012] The sensor assembly is connected to the air suction pump through a second pipeline, and the opening regulating valve is arranged on the second pipeline, and the opening regulating valve is used to regulate the air suction flow of the air suction pump.

[0013] The sensor assembly includes a low-range hydrogen concentration sensor and a high-range hydrogen concentration sensor arranged in parallel, and also includes a bypass passage connected in parallel with the low-range hydrogen concentration sensor. The first pipeline is connected to the bypass passage or the low-range hydrogen concentration sensor through a valve.

[0014] Preferably, in the above hydrogen detector, the water removal assembly includes a gas collecting hood, a third pipeline, a steam-water separator and a dryer.

[0015] The air inlet end of the third pipeline is provided with the air collecting hood, and the air collecting hood is used to collect the tail gas.

[0016] The air inlet end of the third pipeline is provided with a breathable and waterproof membrane for filtering water in the tail gas.

[0017] The steam-water separator is located downstream of the waterproof membrane and is connected to the third pipeline, and is used to separate water from the tail gas.

[0018] The dryer is located downstream of the steam-water separator and is used to remove moisture from the tail gas.

[0019] Preferably, in the above hydrogen detector, the steam-water separator has a water storage tank, the water storage tank is used to store the water separated by the steam-water separator, the lower end of the water storage tank has a drain pipe, and the drain pipe is provided with a drain valve.

[0020] Preferably, in the above-mentioned hydrogen detector, a high-level sensor and a low-level sensor are provided in the water storage tank, and the high-level sensor and the low-level sensor are communicatively connected with the drain valve.

[0021] Preferably, in the above hydrogen detector, the breathable waterproof membrane is a ceramic waterproof membrane.

[0022] Preferably, in the above hydrogen detector, the gas collecting hood is a trumpet-shaped hood, the end of the trumpet-shaped hood with a larger opening faces the tail exhaust pipe, and the end of the trumpet-shaped hood with a smaller opening is sleeved on the third pipeline.

[0023] Preferably, the above hydrogen detector further includes a controller, which is communicatively connected with the sensor assembly and is used to store the real-time hydrogen concentration detected by the sensor assembly and process the real-time hydrogen concentration within a preset time period to obtain the average value of the hydrogen concentration within the preset time period and a change curve of the average value of the hydrogen concentration.

[0024] It also includes a display, which is connected to the controller for online display of the real-time hydrogen concentration, the average value of the hydrogen concentration and the change curve.

[0025] Preferably, in the above-mentioned hydrogen gas detector, the power source of the hydrogen gas detector is a battery, or the power source of the hydrogen gas detector is alternating current.

[0026] Preferably, in the above hydrogen detector, a filter is provided upstream of the flow meter to filter dust particles in the exhaust gas.

[0027] The hydrogen detector provided in the embodiment of the present application includes a dehydration component, a flow meter, a sensor component, an opening regulating valve and an air suction pump connected in series in sequence, wherein the dehydration component is used to remove moisture in the exhaust gas discharged from the tail pipe to reduce the moisture entering the sensor component; the flow meter, the opening regulating valve and the air suction pump cooperate to maintain the flow rate of the hydrogen detector within a reasonable range; the sensor component has a low-range hydrogen concentration sensor and a high-range hydrogen concentration sensor with different ranges, the low-range hydrogen concentration sensor is suitable for detecting exhaust gas with a lower hydrogen concentration, and the high-range hydrogen concentration sensor is suitable for detecting exhaust gas with a higher hydrogen concentration, so that the hydrogen detector can be used not only for the detection of exhaust gas with a high hydrogen concentration, but also for the detection of exhaust gas with a low hydrogen concentration, and has two hydrogen concentration detection ranges. Compared with the hydrogen detector in the related art that only has one hydrogen concentration measurement range, it has a wider range of adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without creative work, and the present application can also be applied to other similar scenarios based on the provided drawings. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0029] Figure 1 It is a structural schematic diagram of the hydrogen detector of the present application;

[0030] Figure 2 It is the principle diagram of the hydrogen detector of this application.

[0031] The accompanying drawings are as follows:

[0032] 10-dewatering assembly; 110-gas collecting hood; 120-steam-water separator; 121-water storage tank; 122-drain pipe; 123-drain valve; 124-high-level sensor; 125-low-level sensor; 130-dryer; 140-breathable and waterproof membrane; 20-flow meter; 30-sensor assembly; 310-low-range hydrogen concentration sensor; 320-high-range hydrogen concentration sensor; 330-bypass; 340-valve; 40-opening regulating valve; 50-suction pump; 60-controller. DETAILED DESCRIPTION

[0033] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It will be understood that the specific embodiments described herein are only used to explain the related application, rather than to limit the application. The described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0034] It should be noted that, for ease of description, only the parts related to the relevant applications are shown in the accompanying drawings. In the absence of conflict, the embodiments in this application and the features in the embodiments can be arbitrarily combined with each other, as long as the combined technical features are not contradictory. All feasible feature combinations are technical contents clearly recorded in this article. Any of the multiple sub-features contained in the same sentence can be applied independently, and does not have to be applied together with other sub-features.

[0035] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0036] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0037] See also Figure 1-Figure 2 .

[0038] Some embodiments of the present application disclose a hydrogen detector for detecting the hydrogen concentration in the exhaust gas of a hydrogen fuel vehicle. The hydrogen detector disclosed in the present solution comprises a dehydration component 10, a flow meter 20, a sensor component 30, an opening regulating valve 40 and an air suction pump 50 connected in series in sequence.

[0039] The dehydration assembly 10 is connected to the tail pipe of the hydrogen fuel vehicle and is used to remove moisture from the tail gas discharged from the tail pipe to reduce the moisture entering the sensor assembly 30, and protect the flow meter 20, the sensor assembly 30 and the suction pump 50 located downstream of the dehydration assembly 10;

[0040] The flow meter 20 is used to measure the flow of the air pump 50 so that the flow of the hydrogen detector is maintained within a reasonable range. Specifically, the greater the flow, the more accurate the measurement result;

[0041] The opening regulating valve 40 is used to adjust the flow rate so that the hydrogen detector works within a reasonable flow rate range to ensure the accuracy of the measurement result of the sensor assembly 30;

[0042] The suction pump 50 is used to provide power to the tail gas, so that the tail gas can smoothly flow continuously in the hydrogen detector;

[0043] The sensor assembly 30 includes a low-range hydrogen concentration sensor 310 and a high-range hydrogen concentration sensor 320 arranged in parallel. The range of hydrogen concentration detected by the low-range hydrogen concentration sensor 310 is smaller than the range of hydrogen concentration detected by the high-range hydrogen concentration sensor 320. The low-range hydrogen concentration sensor 310 is suitable for detecting tail gas with a lower hydrogen concentration, and the high-range hydrogen concentration sensor 320 is suitable for detecting tail gas with a higher hydrogen concentration. In some embodiments, the range of hydrogen concentration detected by the low-range hydrogen concentration sensor 310 is 0~4vol%, and the range of hydrogen concentration detected by the high-range hydrogen concentration sensor 320 is 0~4vol%. The range is 0~10vol%. The sensor assembly 30 also includes a bypass passage 330 connected in parallel with the low-range hydrogen concentration sensor 310. The first pipeline, the bypass passage 330 and the low-range hydrogen concentration sensor 310 are connected through a valve 340. The valve 340 is used to cut off the connection between the first pipeline and the low-range hydrogen concentration sensor 310 when the hydrogen concentration in the exhaust gas exceeds the upper limit of the low-range hydrogen concentration sensor 310, and at the same time, the first pipeline is connected to the bypass passage 330 to protect the low-range hydrogen concentration sensor 310 and prevent high-concentration hydrogen from damaging the low-range hydrogen sensor. When the hydrogen concentration in the exhaust gas does not exceed the upper limit of the low-range hydrogen concentration sensor 310, the first pipeline is connected to the low-range hydrogen concentration sensor 310, and the first pipeline is disconnected from the bypass passage 330.

[0044] The valve 340 may be a two-position three-way valve, or may be a valve 340 independently provided at the bypass passage 330 and upstream of the low-range hydrogen concentration sensor 310 .

[0045] During operation, the dehydration component 10, the flow meter 20, the sensor component 30, the opening regulating valve 40 and the suction pump 50 are all started and run to perform self-inspection. After the inspection is qualified, the hydrogen concentration inspection can be carried out; the exhaust gas discharged from the tail pipe is sucked into the dehydration component 10, and after dehydration and drying treatment, it is divided into two paths, flowing into the low-range hydrogen sensor and the high-range hydrogen sensor respectively. The low-range hydrogen sensor and the high-range hydrogen sensor synchronously detect the hydrogen concentration in the exhaust gas. The response speed of the low-range hydrogen sensor is higher than that of the high-range hydrogen sensor, and the hydrogen concentration in the exhaust gas can be quickly detected. If the hydrogen concentration in the exhaust gas is greater than the limit value of the low-range hydrogen sensor, the exhaust gas supply to the low-range sensor is cut off, and the exhaust gas is discharged through the bypass passage 330 through the suction pump 50.

[0046] The bypass passage 330 can also ensure that the airflow in the pipeline of the hydrogen detector flows smoothly with small fluctuations, thereby ensuring the accuracy of the high-range hydrogen sensor detection.

[0047] The sensor assembly 30 of the hydrogen detector disclosed in the present scheme has a low-range hydrogen concentration sensor 310 and a high-range hydrogen concentration sensor 320 with different ranges, so that the hydrogen detector can be used not only for the detection of exhaust gas with high hydrogen concentration, but also for the detection of exhaust gas with low hydrogen concentration. It has two hydrogen concentration detection ranges, and has a wider range of adaptability than the hydrogen detector with only one hydrogen concentration measurement range in the related art.

[0048] In some embodiments, the sensor assembly 30 of the hydrogen detector is not limited to only including a low-range hydrogen concentration sensor 310 and a high-range hydrogen concentration sensor 320, but may also have a hydrogen concentration sensor located between the ranges of the low-range hydrogen concentration sensor 310 and the high-range hydrogen concentration sensor 320.

[0049] The low-range hydrogen concentration sensor 310 and the high-range hydrogen concentration sensor 320 of the sensor assembly 30 of the hydrogen detector are not limited to one, and there may be a spare low-range hydrogen concentration sensor 310 and a spare high-range hydrogen concentration sensor 320 connected in parallel with the low-range hydrogen concentration sensor 310 and the high-range hydrogen concentration sensor 320.

[0050] The sensor assembly 30 of the present solution adopts a combination of a low-range hydrogen concentration sensor 310 and a high-range hydrogen concentration sensor 320, which not only expands the application scope of the hydrogen detector, but also the low-range hydrogen concentration sensor 310 has a faster response speed and higher accuracy than the high-range hydrogen concentration sensor 320. In actual situations, the hydrogen concentration in the exhaust gas is generally within the measurement range of the low-range hydrogen concentration sensor 310, thereby ensuring the measurement accuracy and response speed of the entire hydrogen detector.

[0051] When detecting the hydrogen concentration in the exhaust gas, the low-range hydrogen concentration sensor 310 and the high-range hydrogen concentration sensor 320 simultaneously perform hydrogen concentration detection. When the hydrogen concentration in the exhaust gas is less than the set value of the low-range hydrogen concentration sensor 310, the hydrogen concentration detected by the low-range hydrogen concentration sensor 310 shall prevail. When the hydrogen concentration in the exhaust gas exceeds the set value of the low-range hydrogen concentration sensor 310, the hydrogen concentration detected by the high-range hydrogen concentration sensor 320 shall prevail, and the connection between the low-range hydrogen concentration sensor 310 and the exhaust gas shall be cut off.

[0052] The sensor assembly 30 is connected to the first pipeline through a tee, and the low-range hydrogen concentration sensor 310, the high-range hydrogen concentration sensor 320 and the bypass passage are connected to the second pipeline through a four-way connection.

[0053] In this solution, the water removal component 10 is connected to the tail pipe through a hose and is located at least 100 mm away from the exhaust port of the tail pipe. The hose is fixed to the exhaust port of the tail pipe, and the water removal component 10, the flow meter 20, the sensor component 30, the opening regulating valve 40 and the suction pump 50 are integrated in the box and located on the ground, without manual support, which reduces the dependence of hydrogen concentration detection on workers.

[0054] In addition, the hydrogen detector disclosed in this scheme has an additional dehydration component 10 upstream of the sensor component 30. The dehydration component 10 is used to dehydrate the exhaust gas entering the sensor component 30, thereby reducing the damage of water to the sensor component 30 and extending the service life of the hydrogen detector.

[0055] Furthermore, the hydrogen detector disclosed in the present scheme adds an air suction pump 50 downstream of the sensor assembly 30, which provides power for the flow of exhaust gas in the hydrogen detector, ensuring that the exhaust gas can fully flow through each component of the hydrogen detector. The gas flow rate in the hydrogen detector can be maintained within a reasonable range to ensure the accuracy and reliability of the measurement of the sensor assembly 30.

[0056] In some embodiments, the water removal assembly 10 includes an air collecting hood 110, a third pipeline, a steam-water separator 120 and a dryer 130, and the air collecting hood 110, the steam-water separator 120 and the dryer 130 are arranged on the third pipeline.

[0057] The air inlet end of the third pipeline is provided with a breathable waterproof membrane 140, which allows gas to pass through but can block large water molecules, that is, the breathable waterproof membrane 140 can filter large water molecules in the tail gas but does not affect the passage of gas in the tail gas. The breathable waterproof membrane 140 realizes the first treatment of the water in the tail gas to reduce the workload of the steam-water separator 120 and the dryer 130.

[0058] like Figure 1As shown, one end of the third pipeline is connected to the tail exhaust pipe, and the other end of the third pipeline is connected to the sensor assembly 30. The gas collecting hood 110 is arranged at one end of the third tube furnace connected to the tail exhaust pipe, and is used to collect the exhaust gas discharged from the tail exhaust pipe; the steam-water separator 120 is installed on the third pipeline, and the exhaust gas passes through the steam-water separator 120 to separate the gas and water. The separated gas passes through the dryer 130 for further drying treatment, and the separated water is discharged from the steam-water separator 120.

[0059] The positions of the water-gas separator 120 and the dryer 130 may be exchanged, and the number of the water-gas separator 120 and the dryer 130 provided on the third pipeline is not limited to one.

[0060] The desiccant selected for the dryer 130 does not adsorb hydrogen, so as not to affect the measurement accuracy of the hydrogen concentration by the sensor component 30.

[0061] The desiccant selected for the dryer 130 may also be a color-developing desiccant, and the moisture content in the exhaust gas can be determined based on the color change of the desiccant.

[0062] The dehydration component 10 can be located upstream of the sensor component 30, that is, the low-range hydrogen concentration sensor 310 and the high-range hydrogen concentration sensor 320 share a dehydration component 10; the dehydration components 10 can also be respectively arranged upstream of the low-range hydrogen concentration sensor 310 and the high-range hydrogen concentration sensor 320 of the sensor component 30, that is, the low-range hydrogen concentration sensor 310 and the high-range hydrogen concentration sensor 320 have their own dehydration components 10.

[0063] In some embodiments, the breathable waterproof membrane 140 is a ceramic waterproof membrane. The ceramic waterproof membrane is a continuous elastic high-strength, high-elasticity dense waterproof coating. The internal gaps of the ceramic waterproof membrane are only a few nanometers. Single water molecules can pass through these gaps, but large water molecules are difficult to pass through, thereby filtering the water in the tail gas and preventing liquid water from being sucked into the hydrogen detector and causing pipeline blockage.

[0064] In some embodiments, the air collecting hood 110 is a trumpet-shaped hood, wherein the end with a larger opening of the trumpet-shaped hood faces the tail exhaust pipe, and the end with a smaller opening of the trumpet-shaped hood is sleeved on the third pipeline.

[0065] The steam-water separator 120 disclosed in the present solution has a water storage tank 121 , which is used to store water separated by the steam-water separator 120 . The lower end of the water storage tank 121 has a drain pipe 122 , and the drain pipe 122 is provided with a drain valve 123 .

[0066] The drain valve 123 is opened to drain the water in the water tank 121 to prevent the water in the water tank 121 from flowing back into the steam-water separator 120 and entering the sensor assembly 30 .

[0067] The drain valve 123 can be opened and closed manually, and the drain valve 123 can also be opened and closed at a fixed time.

[0068] In some embodiments of the present solution, a high level sensor 124 and a low level sensor 125 are provided in the water tank 121, and the highest liquid level sensor and the lowest liquid level sensor are in communication connection with the drain valve 123. Specifically, when the water level in the water tank 121 reaches the high level sensor 124, the drain valve 123 is opened to drain the water in the water tank 121, and when the water level in the water tank 121 reaches the low level sensor 125, the drain valve 123 is closed, and the water tank 121 stops draining, thereby realizing the automatic discharge of the water in the water tank 121.

[0069] The drain pipe 122 discharges water to a designated area. Automatic drainage can ensure that the hydrogen detector can continue to operate for a long time and avoid detection interruption caused by manual drainage.

[0070] The hydrogen detector disclosed in the present solution also includes a controller 60 and a display. The controller 60 is connected to the sensor assembly 30 for communication and is used to store the real-time hydrogen concentration detected by the sensor assembly 30 and process the real-time hydrogen concentration within a preset time period to obtain the average value of the hydrogen concentration within the preset time period and the change curve of the average value of the hydrogen concentration.

[0071] A display is also included, which is connected to the controller 60 for online display of the real-time hydrogen concentration and the curve of the real-time hydrogen concentration changing with time ( Figure 2 The hydrogen concentration-time curve shown in ), the average hydrogen concentration, and the curve of the change of the average hydrogen concentration over time.

[0072] When the hydrogen concentration in the exhaust gas is less than the set value of the low-range hydrogen concentration sensor 310, the data recorded by the hydrogen detector is the detection value of the low-range hydrogen concentration sensor 310; when the hydrogen concentration in the exhaust gas is greater than the set value of the low-range hydrogen concentration sensor 310, the data recorded by the hydrogen detector is the detection value of the high-range hydrogen concentration sensor 320.

[0073] The controller 60 has a data processing function and can obtain the average value of hydrogen concentration within a preset time period. Assuming that the preset time period is 3s, the controller 60 can process the data to obtain the average value of hydrogen concentration within any 3s. Assuming that the hydrogen detector works for 10s, the preset time periods include 1s-3s, 2s-4s, 3s-5s, 4s-6s, 5s-7s, 6s-8s, 7s-9s and 8s-10s, rather than just 1s-3s, 4s-6s, 7s-9s, and the average value of hydrogen concentration obtained is more and the measurement is more accurate.

[0074] The display screen can also display the maximum value of the real-time hydrogen concentration and the maximum value of the average hydrogen concentration obtained by the above processing.

[0075] The display screen intuitively displays the real-time hydrogen concentration of the exhaust gas and the maximum value of the real-time hydrogen concentration ( Figure 2 The instantaneous maximum value shown in ), the average value of hydrogen concentration, the maximum value among the average values ​​of hydrogen concentration ( Figure 2 The staff can obtain the hydrogen concentration in the exhaust gas and the change of hydrogen concentration on site by using the average maximum value shown in the figure and the change curve. At the same time, the controller 60 has a storage function, which is convenient for background data processing and provides reference information for subsequent scientific research.

[0076] The data recording frequency of the hydrogen detector disclosed in this scheme is 50Hz, that is, 50 data are recorded in 1s. The amount of data is large enough to ensure the detection accuracy of the hydrogen concentration in the exhaust gas by the hydrogen detector.

[0077] The controller 60 is also communicated with the opening regulating valve 40 and the valve 340, etc., and the opening regulating valve 40 and the valve 340, etc. are adjusted through the controller 60. The controller 60 is communicated with the flow meter 20, and is used to control the opening regulating valve 40 according to the flow collected by the flow meter 20. The controller 60 is communicated with the suction pump 50, and is used to start and stop the suction pump 50. The controller 60 is communicated with the drain valve 123, the high-level sensor 124 and the low-level sensor 125 to realize automatic opening and closing of the drain valve 123.

[0078] The power source of the hydrogen detector disclosed in the present solution may be a battery, or an alternating current, or may be suitable for both a battery and an alternating current.

[0079] When the power source of the hydrogen detector is a battery, the battery can be a rechargeable battery. Optionally, the battery is a lithium battery. The hydrogen detector can be moved as needed, is not restricted by the power cord, and is applicable to many scenarios.

[0080] When the power supply of the hydrogen detector is AC, it can provide power to the electrical components of the hydrogen detector and charge the battery at the same time.

[0081] like Figure 2 As shown, it is a schematic diagram of the hydrogen detector. The battery and AC power are provided through the power distribution module to the high-level sensor 124, the low-level sensor 125, the high-range hydrogen concentration sensor 320, the low-range hydrogen concentration sensor 310, the valve 340, the suction pump 50 and the drain valve 123. The high-level sensor 124, the low-level sensor 125, the high-range hydrogen concentration sensor 320, the low-range hydrogen concentration sensor 310, the valve 340, the suction pump 50 and the drain valve 123 are connected in communication with the controller 60, and the controller 60 is connected in communication with the display screen, which displays the data.

[0082] A filter is provided upstream of the flow meter 20 of the present solution to filter dust particles in the exhaust gas to prevent dust from clogging the pipeline, thereby ensuring smooth detection of the hydrogen detector and extending the service life of the hydrogen detector.

[0083] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used, and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. The scope of application involved in the present application is not limited to the technical solution formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned application concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in this application (but not limited to) to form a technical solution.

Claims

1. A hydrogen gas detector, characterized in that: The invention comprises a water removal component (10), a flow meter (20), a sensor component (30), an opening regulating valve (40) and an air suction pump (50) which are sequentially connected in series. The water removal component (10) is in communication with the tail pipe and is used to remove moisture from the tail gas discharged from the tail pipe. The water removal component (10) is in communication with the sensor component (30) via a first pipeline, the flow meter (20) being arranged on the first pipeline, and the flow meter (20) being used to collect gas flow. The sensor assembly (30) is connected to the air suction pump (50) via a second pipeline, and the opening regulating valve (40) is arranged on the second pipeline. The opening regulating valve (40) is used to regulate the air suction flow rate of the air suction pump (50). The sensor assembly (30) comprises a low-range hydrogen concentration sensor (310) and a high-range hydrogen concentration sensor (320) arranged in parallel, and also comprises a bypass passage (330) connected in parallel with the low-range hydrogen concentration sensor (310); the first pipeline is connected to the bypass passage (330) or the low-range hydrogen concentration sensor (310) via a valve (340).

2. The hydrogen gas detector according to claim 1, characterized in that: The dewatering assembly (10) comprises a gas collecting hood (110), a third pipeline, a steam-water separator (120) and a dryer (130). The gas collection hood (110) is provided at the gas inlet end of the third pipeline, and the gas collection hood (110) is used to collect the tail gas. The air inlet end of the third pipeline is provided with a breathable and waterproof membrane (140) for filtering water in the exhaust gas. The steam-water separator (120) is located downstream of the waterproof membrane and is in communication with the third pipeline, and is used to separate water from the tail gas. The dryer (130) is located downstream of the steam-water separator (120) and is used to remove moisture from the tail gas.

3. The hydrogen gas detector according to claim 2, characterized in that: The steam-water separator (120) has a water storage tank (121), the water storage tank (121) is used to store water separated by the steam-water separator (120), the lower end of the water storage tank (121) has a drain pipe (122), and the drain pipe (122) is provided with a drain valve (123).

4. The hydrogen gas detector according to claim 3, characterized in that: A high-position sensor (124) and a low-position sensor (125) are provided in the water storage tank (121), and the high-position sensor (124) and the low-position sensor (125) are communicatively connected with the drainage valve (123).

5. The hydrogen gas detector according to any one of claims 2 to 4, characterized in that: The breathable waterproof membrane (140) is a ceramic waterproof membrane.

6. The hydrogen gas detector according to any one of claims 2 to 4, characterized in that: The air collecting hood (110) is a trumpet-shaped hood, wherein the end of the trumpet-shaped hood with a larger opening faces the tail exhaust pipe, and the end of the trumpet-shaped hood with a smaller opening is sleeved on the third pipeline.

7. The hydrogen gas detector according to claim 1, characterized in that: The device also includes a controller (60), the controller (60) being in communication with the sensor assembly (30) and configured to store the real-time hydrogen concentration detected by the sensor assembly (30), and process the real-time hydrogen concentration within a preset time period to obtain an average value of the hydrogen concentration within the preset time period and a curve of changes in the average value of the hydrogen concentration. It also includes a display, which is in communication connection with the controller (60) and is used to display the real-time hydrogen concentration, the average hydrogen concentration and the variation curve online.

8. The hydrogen gas detector according to claim 1, characterized in that: The power source of the hydrogen detector is a battery, or the power source of the hydrogen detector is alternating current.

9. The hydrogen gas detector according to claim 1, characterized in that: A filter is provided upstream of the flow meter (20) for filtering dust particles in the exhaust gas.

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