A portable gas monitoring alarm device

Abstract

The utility model discloses a portable gas monitoring alarm device, including the upper cover, the bottom screw thread seal fixed of upper cover has the intermediate casing, the bottom screw thread seal fixed of intermediate casing has the detection filter cup, the top of upper cover is installed with display component, the inside of upper cover is installed with communication component, the inside top fixed mounting of intermediate casing has the alarm board, the inside intermediate fixed connection of intermediate casing has the battery compartment, the inside assembly of battery compartment has the battery, the outside surface of intermediate casing correspond battery compartment department detachable seal fixed has the storehouse lid, in the utility model, through the screw thread seal connection structure of upper cover, intermediate casing and detection filter cup, realize three -level modularization sealed protection, effectively insulate moisture, dust and corrosive gas invasion, and each functional component is installed in the regional isolation, avoids electromagnetic interference and physical damage, ensures the device in the stable operation in the high -risk environment such as petroleum chemical industry, mine etc.

Description

Technical Field

[0001] This utility model relates to the field of gas monitoring technology, and in particular to a portable gas monitoring and alarm device. Background Technology

[0002] In numerous fields such as current industrial production, environmental monitoring, and fire emergency response, the demand for real-time, accurate detection and timely alarm of multiple gases is increasing. Existing gas detection alarm devices have several shortcomings, such as requiring manual handheld operation and lacking real-time remote data transmission; inadequate protective performance, making them unsuitable for harsh environments and resulting in a short lifespan; and inconvenient operation and maintenance, increasing operating and time costs. Therefore, developing a gas detection alarm that can efficiently detect multiple gases, has a reasonable structure, strong protective performance, and is easy to operate and maintain is of significant practical importance. Utility Model Content

[0003] This invention is a portable gas monitoring and alarm device proposed to overcome the shortcomings of existing technologies.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a portable gas monitoring and alarm device, including an upper cover, a middle shell that is threadedly sealed to the bottom of the upper cover, and a detection filter cup that is threadedly sealed to the bottom of the middle shell;

[0005] A display component is installed at the top of the upper cover, and a communication component is installed inside the upper cover;

[0006] An alarm board is fixedly installed on the top inner side of the intermediate housing. A battery compartment is fixedly connected to the middle of the interior of the intermediate housing. A battery is installed inside the battery compartment. A compartment cover is detachably and sealed to the outer surface of the intermediate housing corresponding to the battery compartment.

[0007] A sensor plate is fixedly connected to the bottom of the detection filter cup, and a sensor control board is provided above the sensor plate, and the sensor control board is fixedly connected to the detection filter cup.

[0008] Furthermore, two copper lifting rings are symmetrically fixedly connected to the top of the cover.

[0009] Furthermore, the display component includes waterproof glass, which is sealed and fixedly embedded in the top of the cover. A display panel is provided below the waterproof glass and is fixedly connected to the cover.

[0010] Furthermore, the communication components, from top to bottom, include a LoRa board, a 4G board, and an interface board, and the LoRa board, 4G board, and interface board are all fixedly connected to the top cover.

[0011] Furthermore, the top of the alarm board is uniformly and fixedly connected with multiple high-brightness LEDs and two high-decibel buzzers. The outer surface of the intermediate housing is uniformly provided with multiple through holes that penetrate into the interior, and the multiple through holes are respectively sealed and connected to adjacent high-brightness LEDs and high-decibel buzzers.

[0012] Furthermore, a button is fixedly embedded on one side of the outer surface of the intermediate housing.

[0013] Furthermore, the sensor board integrates and fixes a catalytic combustion sensor, an electrochemical sensor, and an electrochemical oxygen sensor.

[0014] The beneficial effects of this utility model are:

[0015] In use, this portable gas monitoring and alarm device achieves three-level modular sealing protection through a threaded sealing connection structure between the top cover, the middle shell, and the detection filter cup, effectively preventing the intrusion of moisture, dust, and corrosive gases. Each functional component is installed in a separate, isolated area to avoid electromagnetic interference and physical damage, ensuring stable operation of the device in high-risk environments such as petrochemical plants and mines.

[0016] In use, this portable gas monitoring and alarm device integrates a sensor board and a control board within the filter cup. It supports parallel detection by multiple sensors based on various principles, including catalytic combustion and electrochemistry, and can simultaneously monitor the concentrations of combustible gases, toxic gases, and oxygen. The processed data is visualized in real-time on the display component and transmitted remotely via LoRa / 4G dual-mode communication, meeting the real-time monitoring needs in complex scenarios.

[0017] In use, this portable gas monitoring and alarm device features an alarm board that combines a high-brightness LED light with a light-guiding structure through holes to achieve 360° visible light warning; the high-decibel buzzer's sound pressure is diffused directionally through the holes, providing strong penetration. The audible and visual alarms are linked with the communication components, enabling synchronous triggering both locally and remotely, significantly improving the speed of hazard response.

[0018] This utility model relates to a portable gas monitoring and alarm device. The battery compartment features a side-opening, detachable cover design, allowing for quick battery replacement without affecting the main body's sealing. The sensor plate and filter cup are integrated, facilitating disassembly for cleaning or sensor replacement and reducing maintenance costs. Attached Figure Description

[0019] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 : Front view of this utility model;

[0021] Figure 2 : A sectional perspective view of this utility model;

[0022] Figure 3 : A cross-sectional view of this utility model.

[0023] The attached figures are labeled as follows:

[0024] 1. Top cover; 2. High-brightness LED light; 3. Button; 4. Compartment cover; 5. Middle shell; 6. Detection filter cup; 7. Through hole; 8. Battery; 9. Copper hanging ring; 10. Waterproof glass; 11. Display board; 12. LoRa board; 13. 4G board; 14. Interface board; 15. Battery compartment; 16. Sensor control board; 17. Sensor board; 18. Alarm board. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figures 1 to 3 As shown, a portable gas monitoring and alarm device is disclosed, including an upper cover 1, on which two copper hanging rings 9 are symmetrically fixedly connected.

[0027] The top of the upper cover 1 houses the display components, while the internal components contain the communication components. The upper cover 1 is made of PEEK (polyetheretherketone) material. PEEK material possesses excellent high-temperature resistance (withstanding temperatures up to 260℃), chemical corrosion resistance (resisting the erosion of various strong acids, alkalis, and organic solvents), high strength (tensile strength exceeding 90MPa), and good insulation properties. The upper part primarily houses the core control circuitry and some sensor components of the gas detector alarm. Its material properties provide reliable protection for the internal precision electronic components, effectively preventing circuit failures and sensor damage caused by high temperatures, chemical substances, and other factors, thereby ensuring stable instrument operation and detection accuracy.

[0028] The display component includes a waterproof glass 10, which is sealed and fixedly embedded in the top of the upper cover 1. A display panel 11 is provided below the waterproof glass 10 and is fixedly connected to the upper cover 1. The communication component includes a LoRa board 12, a 4G board 13, and an interface board 14 from top to bottom, and the LoRa board 12, the 4G board 13, and the interface board 14 are all fixedly connected to the upper cover 1.

[0029] The bottom of the upper cover 1 is threadedly sealed with an intermediate housing 5, which is made of aluminum alloy. Aluminum alloy is lightweight (density approximately 2.7 g / cm³). 3 It boasts advantages such as high strength (yield strength can reach over 200MPa) and excellent heat dissipation. The aluminum alloy middle section, while ensuring the structural strength of the instrument, also effectively dissipates heat generated during operation due to its superior heat dissipation properties, preventing excessive internal temperature from affecting instrument performance.

[0030] An alarm plate 18 is fixedly installed on the top inner side of the intermediate housing 5. Multiple high-brightness LEDs 2 and two high-decibel buzzers are evenly fixedly connected to the top of the alarm plate 18. Multiple through holes 7 are evenly distributed on the outer surface of the intermediate housing 5, extending into the interior. Each through hole 7 is sealed to an adjacent high-brightness LED 2 and high-decibel buzzer. The LEDs 2 are red and clearly visible even in low-light environments. The high-decibel buzzers emit a sharp alarm sound with a volume exceeding 80dB, ensuring that the user's attention is drawn even in noisy environments.

[0031] The battery compartment 15 is fixedly connected to the middle of the intermediate housing 5. The battery compartment 15 adopts a special sealing design and is equipped with waterproof and dustproof rubber gaskets to ensure that the battery 8 can work stably in various harsh environments (such as high humidity, dusty environments, etc.). The battery compartment 15 is equipped with the battery 8, which is a disposable lithium-ion battery with a capacity of 3.6V / 6000mAh, which can meet the power needs of the instrument for 8-12 hours of continuous operation. The outer surface of the intermediate housing 5 is detachably sealed and fixed with a compartment cover 4 corresponding to the battery compartment 15. The compartment cover 4 is fixed with screws, which makes it convenient for users to replace the battery 8.

[0032] A button 3 is fixedly embedded on one side of the outer surface of the middle shell 5. The button 3 is ergonomically designed, and its position and shape have been carefully considered to facilitate user operation. It can be easily pressed even when wearing gloves. The button 3 has obvious tactile feedback, and there is a clear feel when it is pressed and released, which can effectively avoid accidental operation.

[0033] The bottom of the intermediate housing 5 is threadedly sealed with a detection filter cup 6. The detection filter cup 6 is made of stainless steel using an advanced sintering process, and has a uniform pore structure. The pore size can be precisely controlled according to actual testing needs, generally between 60-100μm. The detection filter cup 6 is mainly used to filter impurities in the air, such as dust and particulate matter.

[0034] A sensor plate 17 is fixedly connected to the bottom of the internal part of the detection filter cup 6. A sensor control plate 16 is provided above the sensor plate 17 and is fixedly connected to the detection filter cup 6. A catalytic combustion sensor, an electrochemical sensor, and an electrochemical oxygen sensor are integrated and fixed on the sensor plate 17.

[0035] I. Gas Sampling and Filtration

[0036] Ambient gas enters the device through the micropores (60-100μm) of the detection filter cup 6, filtering out dust, particulate matter and other impurities to avoid contaminating the sensor.

[0037] The filtered gas diffuses evenly within the detection filter cup 6, making full contact with the multiple gas sensors on the sensor plate 17.

[0038] II. Sensor board 17 integrates multiple gas sensors, employing different detection principles.

[0039] Catalytic combustion sensor: Combustible gas undergoes an oxidation reaction (combustion) on the platinum wire catalytic layer on the sensor surface, generating heat. The heat causes a change in the resistance of the platinum wire, and the resistance difference is measured by a Wheatstone bridge and converted into a gas concentration signal (0% to 100% LEL).

[0040] Electrochemical sensor: Taking CO detection as an example: The gas undergoes an oxidation reaction at the sensor's working electrode (CO + H₂O → CO₂ + 2H₂O). + +2e - This generates a microcurrent. The magnitude of the current is proportional to the gas concentration, and after processing by an amplification circuit, it outputs a signal (0–1000 ppm).

[0041] Electrochemical oxygen sensor: Oxygen is reduced at the cathode (O2 + 4H2O) + +4e - →2H2O) generates a current signal. The oxygen concentration (0%~25%VOL) is calculated by measuring the current value, and an alarm is triggered when there is oxygen deficiency or oxygen enrichment.

[0042] III. Data Processing and Display

[0043] The analog signal output from sensor board 17 is filtered and amplified by sensor control board 16, and then converted into a digital signal. The data is transmitted to LoRa board 12 / 4G board 13 through interface board 14 inside upper cover 1.

[0044] The microprocessor on the sensor control board 16 analyzes the concentration value and compares it with a preset threshold (such as a CO alarm value of 50 ppm). The processed data is displayed in real time on the display board 11 under the waterproof glass 10, and the interface allows switching between different gas parameters.

[0045] IV. Alarm and Remote Communication

[0046] When the gas concentration exceeds the threshold, the sensor control board 16 transmits the data to the alarm board 18. The high-brightness LED 2 on the alarm board 18 emits red light through the through-hole 7, making it visible from all 360°. A high-decibel buzzer (>80dB) emits an intermittent beeping sound to alert personnel on site.

[0047] 4G network: Data is uploaded to the cloud platform via 4G board 13, supporting monitoring via mobile APP / PC.

[0048] LORA self-organizing network: When there is no 4G signal, it can form a network with other devices through the LORA board 12 to achieve local area data sharing.

[0049] V. Power Supply

[0050] Battery 8 supplies power to all the components.

[0051] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A portable gas monitoring and alarm device, comprising a top cover (1), characterized in that: The bottom of the upper cover (1) is threadedly sealed with an intermediate housing (5), and the bottom of the intermediate housing (5) is threadedly sealed with a detection filter cup (6). A display component is installed at the top of the upper cover (1), and a communication component is installed inside the upper cover (1); An alarm plate (18) is fixedly installed on the top inner side of the intermediate housing (5). A battery compartment (15) is fixedly connected in the middle of the interior of the intermediate housing (5). A battery (8) is installed inside the battery compartment (15). A compartment cover (4) is detachably and sealed on the outer surface of the intermediate housing (5) corresponding to the battery compartment (15). A sensor plate (17) is fixedly connected to the bottom of the detection filter cup (6). A sensor control board (16) is provided above the sensor plate (17), and the sensor control board (16) is fixedly connected to the detection filter cup (6).

2. The portable gas monitoring and alarm device according to claim 1, characterized in that: The top of the cover (1) is symmetrically fixed with two copper hanging rings (9).

3. The portable gas monitoring and alarm device according to claim 1, characterized in that: The display assembly includes waterproof glass (10), which is sealed and fixedly embedded in the top of the cover (1). A display panel (11) is provided below the waterproof glass (10), and the display panel (11) is fixedly connected to the cover (1).

4. The portable gas monitoring and alarm device according to claim 1, characterized in that: The communication components, from top to bottom, include a LORA board (12), a 4G board (13), and an interface board (14), and the LORA board (12), the 4G board (13), and the interface board (14) are all fixedly connected to the top cover (1).

5. A portable gas monitoring and alarm device according to claim 1, characterized in that: The top of the alarm board (18) is uniformly fixedly connected with multiple high-brightness LED lights (2) and two high-decibel buzzers. The outer surface of the intermediate housing (5) is uniformly provided with multiple through holes (7) that penetrate into the interior, and the multiple through holes (7) are respectively sealed and connected to the adjacent high-brightness LED lights (2) and high-decibel buzzers.

6. A portable gas monitoring and alarm device according to claim 1, characterized in that: A button (3) is fixedly embedded on one side of the outer surface of the intermediate housing (5).

7. A portable gas monitoring and alarm device according to claim 1, characterized in that: The sensor plate (17) integrates and fixes a catalytic combustion sensor and an electrochemical sensor.

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