A hydrogen leak detection device

Abstract

This invention provides a hydrogen leak detection device, including a housing. A gas collecting port is located at the lower end of the housing. A hydrogen sensor is installed inside the gas collecting port. An overflow port is located on the side wall of the gas collecting port and protrudes from the front of the housing. A gas guiding component is located at the lower part of the gas collecting port. A sound outlet mesh is located in the middle of the housing, and a speaker is located inside the sound outlet mesh. An indicator light protrudes from the side wall of the housing. This invention can improve the sensitivity of hydrogen detection and allows for selection of appropriate installation methods according to different usage scenarios.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen detection technology, and in particular to a hydrogen leak detection device. Background Technology

[0002] Hydrogen molecules are very small and are prone to leakage during production, storage, transportation and use. Because hydrogen is inhalable, colorless and odorless, it cannot be detected by the human nose, and its ignition point is only 585°C, and its content in the air is in the range of 4% to 75%, it will explode when it comes into contact with an open flame. Therefore, hydrogen sensors must be used to detect the hydrogen content in the environment and to detect any leaks when using hydrogen.

[0003] A hydrogen sensor is a safety detection device with high selectivity for hydrogen at room temperature. It prevents explosion risks by rapidly monitoring the hydrogen concentration in the environment and is widely used in hydrogen energy storage and transportation, aerospace, chemical production, and military defense. These sensors are mainly classified into four categories: semiconductor, thermoelectric, fiber optic, and palladium alloy thin-film. Semiconductor sensors detect hydrogen based on changes in the conductivity of metal oxides (such as SnO2); thermoelectric sensors convert the temperature difference potential generated by catalytic reactions into an electrical signal; fiber optic sensors use optical signals to eliminate the risk of electrical sparks; and palladium alloy thin-film sensors achieve 0-100% full-range hydrogen specificity detection.

[0004] This invention provides a hydrogen leak detection device that improves detection sensitivity based on the contact of existing hydrogen sensors. Utility Model Content

[0005] This utility model discloses a hydrogen leak detection device, including a housing. A gas collecting port is provided at the lower end of the housing. A hydrogen sensor is installed inside the gas collecting port. An overflow port is provided on the side wall of the gas collecting port, and the overflow port is exposed from the front of the housing. A gas guiding component is provided at the lower part of the gas collecting port. Hydrogen enters the interior of the gas collecting port through the gas guiding component and then exits through the overflow port. During this process, the hydrogen sensor comes into contact with the hydrogen, thereby triggering the detection. Furthermore, the entry and exit of hydrogen through the overflow port is achieved by the low density of hydrogen, which causes it to float in air.

[0006] A sound-emitting mesh is provided in the center of the housing, and a speaker is provided inside the sound-emitting mesh. An indicator light is protruding from the side wall of the housing. When hydrogen gas is detected, the speaker emits a sound, and the indicator light is powered on and illuminated. The purpose of the indicator light being protruding from the housing is to allow it to be observed from more directions.

[0007] Preferably, the gas guiding component is a gas collecting hood, which is an inverted funnel structure, and its upper end is threadedly connected to the gas collecting pipe opening. That is, the gas collecting hood is cone-shaped as a whole, which facilitates the rising hydrogen gas to enter the funnel structure and then converge into the gas collecting pipe opening.

[0008] Preferably, a hanging lug is fixedly connected to the upper part of the housing, and a sling is attached to the hanging lug. That is, the device is suspended and placed in the area to be detected by the sling.

[0009] Preferably, an RJ45 interface is provided on the upper side of the housing. The RJ45 interface is used for communication. Furthermore, the RJ45 interface is compatible with PoE (Power Over Ethernet), which facilitates power supply to the device while enabling communication.

[0010] Preferably, the gas guiding component is a flange cover, which includes a lower clamping member and an upper clamping member, both thin-shell parts, forming a ring structure. A connecting pipe port is fixedly connected to the upper sidewall of the upper clamping member, and the connecting pipe port and the gas collecting pipe port are threaded together. The flange cover is used to enclose the flange connection on the hydrogen transmission pipeline. If there is a hydrogen leak at this location, the hydrogen enters the interior of the flange cover and rises into the gas collecting pipe port.

[0011] Preferably, both ends of the lower and upper clamping members are provided with connecting ears, and bolts and nuts are provided on the connecting ears. The lower and upper clamping members are fixed together by the bolts and nuts.

[0012] Preferably, both the lower and upper clamping components have inwardly folded edges on their two side edges. When the lower and upper clamping components are fixed to the pipe, their folded edges fit against the side wall of the pipe. When the lower and upper clamping components are fixed, the folded edges fit tightly against the side wall of the pipe, making the flange cover relatively closed.

[0013] Preferably, the housing also contains an MCU module, a battery, and a power supply circuit.

[0014] The beneficial effects of this utility model are as follows: 1. It is equipped with a gas collecting port, and a hydrogen sensor is installed inside the gas collecting port. A gas guiding component is connected to the lower part of the hydrogen collecting port, which can concentrate the hydrogen gas and introduce it into the gas collecting port, thereby increasing the concentration of hydrogen gas in the detected gas and thus improving the detection sensitivity.

[0015] 2. It is equipped with both a gas collection hood and a flange cover, providing two installation methods to meet different usage requirements. Attached Figure Description

[0016] Figure 1 This is a three-dimensional front view of the detection unit of this utility model; Figure 2 This is a three-dimensional schematic diagram of the back of the detection unit of this utility model; Figure 3This is a schematic diagram illustrating the use of the detection unit of this utility model in conjunction with the flange cover; Figure 4 This is a schematic diagram illustrating the use of the detection unit of this utility model in conjunction with the gas collection hood. Figure 5 This is a three-dimensional schematic diagram of the flange cover of this utility model; Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0017] List of reference numerals in the attached diagram: 1. Air collection port; 2. Housing; 3. Overflow port; 4. Sound outlet grille; 5. Indicator light; 6. Hanging lug; 7. RJ45 connector; 8. Flange cover; 9. Air collection hood; 10. Lifting sling; 81. Lower clamping part; 82. Upper clamping part; 83. Connecting lug; 84. Bolt and nut; 85. Connecting pipe port; 86. Folded edge. Detailed Implementation

[0018] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to the directions in the accompanying drawings, and the terms "inner" and "outer" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0019] like Figures 1 to 6 As shown, a hydrogen leak detection device includes a housing 2, which has a circular structure and holes for screw fixing on the back. A gas collecting port 1 is provided at the lower end of the housing 2. A hydrogen sensor is installed inside the gas collecting port 1. When hydrogen enters the hydrogen sensor, it is triggered. An overflow port 3 is provided on the side wall of the gas collecting port 1 and is exposed from the front of the housing 2. Since hydrogen has a relatively low density relative to space, it will rise and eventually be discharged from the overflow port 3. A gas guiding component is provided at the lower part of the gas collecting port 1. The gas guiding component collects hydrogen and concentrates it into the gas collecting port 1, thereby improving the sensitivity of hydrogen detection.

[0020] The housing 2 has a sound-emitting mesh 4 in the middle and a speaker inside the sound-emitting mesh 4. When hydrogen gas is detected, the speaker will emit a sound. An indicator light 5 is protruding from the side wall of the housing 2. The indicator light 5 will also be powered on and illuminated to provide a visual and auditory alarm. In addition, the purpose of protruding the indicator light 5 from the side wall of the housing 2 is to allow the device to be observed from more directions.

[0021] The gas guiding component is a gas collecting hood 9, which is an inverted funnel structure and has its upper end threadedly connected to the gas collecting pipe 1. If hydrogen leaks, it will enter the gas collecting hood 9 during the process of rising and eventually collect in the gas collecting pipe 1. The setting of the gas collecting hood 9 improves the sensitivity of hydrogen detection.

[0022] The upper part of the housing 2 is fixedly connected to a hanging lug 6, and a sling 10 is attached to the hanging lug 6. The detection device is fixed by suspending it through the sling 10, and the device can be suspended in the detection area for detection.

[0023] An RJ45 interface 7 is provided on the upper side of the housing 2. The RJ45 interface 7 is a common communication structure. The RJ45 interface 7 facilitates communication between the detection device and the host computer. Furthermore, the RJ45 interface 7 provided by the detection device includes PoE functionality.

[0024] The gas guiding component is a flange cover 8, which includes a lower clamping part 81 and an upper clamping part 82, both of which are thin-shell parts. The lower clamping part 81 and the upper clamping part 82 form a ring structure. The flange cover 8 is fixed to the flange of the hydrogen transmission pipeline and is used to collect whether there is a hydrogen leak at the flange. The upper side wall of the upper clamping part 82 is fixedly connected to a connecting pipe port 85. The connecting pipe port 85 and the gas collecting port 1 are threaded together. If there is a hydrogen leak at the flange of the hydrogen pipeline, the hydrogen will rise and enter the gas collecting port 1 for detection.

[0025] Both ends of the lower clamping member 81 and the upper clamping member 82 are provided with connecting ears 83, and bolts and nuts 84 are provided on the connecting ears 83. A through hole is also provided on the connecting ears 83. The bolts and nuts 84 are tightened in the through hole, thereby realizing the fixed connection between the lower clamping member 81 and the upper clamping member 82.

[0026] Both sides of the lower clamping member 81 and the upper clamping member 82 are provided with inwardly folded edges 86. After the lower clamping member 81 and the upper clamping member 82 are fixed, the folded edges 86 fit tightly against the side wall of the hydrogen pipeline, so that the flange cover 8 forms a relatively closed space.

[0027] The interior of housing 2 also houses an MCU module, a battery, and a power supply circuit. The inclusion of the MCU module, battery, and power supply circuit meets the operational requirements of the detection device.

[0028] The technical means disclosed in this utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A hydrogen gas leak detection apparatus characterized by comprising: Includes a housing (2), the lower end of which is provided with a gas collecting port (1), a hydrogen sensor is provided inside the gas collecting port (1), an overflow port (3) is provided on the side wall of the gas collecting port (1), and the overflow port (3) is exposed from the front of the housing (2), and a gas guiding component is provided at the lower part of the gas collecting port (1). The housing (2) has a sound outlet mesh (4) in the middle, and a speaker is provided on the inner side of the sound outlet mesh (4). An indicator light (5) is provided on the side wall of the housing (2).

2. The hydrogen leak detection apparatus of claim 1, wherein: The air guiding component is an air collecting hood (9), which is an inverted funnel structure, and its upper end is threadedly connected to the air collecting pipe (1).

3. The hydrogen leak detection device according to claim 2, characterized in that: The upper part of the shell (2) is fixedly connected to a hanging ear (6), and a sling (10) is tied to the hanging ear (6).

4. The hydrogen leak detection device according to claim 1, characterized in that: An RJ45 interface (7) is provided on one side of the upper part of the housing (2).

5. A hydrogen leak detection device according to claim 1, characterized in that: The air guiding component is a flange cover (8), which includes a lower clamping part (81) and an upper clamping part (82) that are thin shell parts. The lower clamping part (81) and the upper clamping part (82) form an annular structure. A connecting pipe port (85) is fixedly connected to the upper side wall of the upper clamping part (82). The connecting pipe port (85) and the air collecting pipe port (1) are threaded together.

6. A hydrogen leak detection device according to claim 5, characterized in that: Both ends of the lower clamping member (81) and the upper clamping member (82) are provided with connecting ears (83), and bolts and nuts (84) are provided on the connecting ears (83).

7. A hydrogen leak detection device according to claim 5, characterized in that: Both sides of the lower clamping member (81) and the upper clamping member (82) are provided with inwardly folded edges (86).

8. A hydrogen leak detection device according to any one of claims 1-7, characterized in that: The housing (2) also contains an MCU module, a battery, and a power supply circuit.

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