Calibrating device for high-altitude gas alarm

Abstract

The utility model provides a calibrating device for a high-altitude gas alarm, which comprises a lifting rod, a diffusion cover and a breather pipe, and is characterized in that the diffusion cover is arranged at one end of the lifting rod so as to sleeve the high-altitude gas alarm; a pipe hole is formed in the lifting rod in the axial direction so that the ventilation pipe can be arranged in the lifting rod in a penetrating mode. One end of the breather pipe is communicated with the diffusion cover, and the other end of the breather pipe extends out of one end, far away from the diffusion cover, of the lifting rod, so that the breather pipe is connected with an external standard gas circuit to convey standard gas for verification into the diffusion cover through the breather pipe, and the high-altitude gas alarm is verified. The calibrating device for the high-altitude gas alarm has the remarkable beneficial effects of simple structure, convenience in operation, high adaptability and the like.

Description

Technical Field

[0001] This utility model relates to the field of gas alarm calibration technology, specifically to a high-altitude gas alarm calibration device. Background Technology

[0002] With social progress and development, the widespread use of clean energy sources such as natural gas has greatly facilitated people's production and lives. However, frequent gas explosions have resulted in alarming personal and property losses, highlighting the growing importance of gas safety. Gas alarms, as indispensable safety equipment in kitchens and industrial environments, can promptly detect and issue warnings of gas leaks, effectively reducing the probability of explosions, fires, and other accidents.

[0003] However, gas alarms also face numerous challenges during use. Gas alarms installed in kitchens experience a gradual decrease in sensor sensitivity due to long-term exposure to environmental factors such as oil fumes and water vapor. In industrial production sites, changes in ambient temperature and humidity, the effects of wind and sand, and the consumption and aging of catalysts in the catalytic elements can also affect the sensor sensitivity of gas alarms, potentially leading to poisoning and malfunction. This poses a serious threat to safe production and daily life.

[0004] To ensure the accurate and reliable operation of gas alarms, they must be calibrated regularly. However, because natural gas is less dense than air, gas alarm probes are usually installed at the highest point in an indoor space, which poses significant challenges to calibration and routine maintenance. The traditional approach is to remove the alarm and send it to a laboratory for calibration, but this requires high-altitude disassembly and spare parts, resulting in high costs. Therefore, on-site calibration is more commonly used for installed alarms.

[0005] However, on-site verification also faces many challenges. On the one hand, climbing to high places for verification poses safety risks; on the other hand, due to factors such as production equipment blocking light, the alarm is usually difficult to observe from the ground, and even using a flashlight is ineffective, which greatly inconveniences the verification work. Furthermore, during alarm verification, it is necessary to maintain the standard gas pressure around the probe at approximately the same level as atmospheric pressure and ensure a constant airflow to guarantee accuracy. However, traditional verification diffusers struggle to balance ensuring the standard gas is not affected by the sparse ambient air while simultaneously preventing the standard gas from accumulating and compressing within the diffuser, thus affecting the verification indication error.

[0006] Therefore, there is an urgent need for a high-altitude gas alarm calibration device that is simple in structure, easy to operate, and adaptable to complex working environments, in order to solve the problems existing in the current technology. Utility Model Content

[0007] In view of the above, this utility model provides a high-altitude gas alarm calibration device that is simple in structure, easy to operate, and adaptable to complex working environments, so as to solve the problems existing in the prior art.

[0008] The technical solution of this utility model:

[0009] This utility model provides a high-altitude gas alarm calibration device, including a lifting rod, a diffuser, and a vent pipe. The diffuser is installed at one end of the lifting rod for fitting the high-altitude gas alarm. A pipe hole is provided along the axial direction on the lifting rod for the vent pipe to pass through. One end of the vent pipe is connected to the diffuser, and the other end extends from the end of the lifting rod away from the diffuser, for connecting to an external calibration gas circuit. Calibration gas is delivered to the diffuser through the vent pipe to calibrate the high-altitude gas alarm.

[0010] Furthermore, the lifting rod adopts a telescopic adjustment rod.

[0011] Furthermore, the telescopic adjustment rod includes at least two telescopically slidably connected rod segments and a locking element for locking the connection between any two rod segments.

[0012] Furthermore, the diffuser includes a cover body and an elastic membrane. The outer circumferential dimension of the cover body gradually increases along the axial direction to form a funnel-shaped structure. The end with the smaller outer circumferential dimension of the cover body is connected to one end of the lifting rod, and the elastic membrane is installed at the end with the larger outer circumferential dimension of the cover body. The elastic membrane has a detection hole that matches the outer circumferential dimension of the high-altitude gas alarm so that the high-altitude gas alarm can be fitted onto it.

[0013] Furthermore, a vent is provided on the outer peripheral wall of the cover near the lifting rod to allow air and excess standard gas to be discharged.

[0014] Furthermore, it includes a pressure sensor for monitoring the standard gas pressure inside the diffuser, a display screen mounted on the lifting rod and electrically connected to the pressure sensor for displaying the standard gas pressure inside the diffuser, and a battery mounted inside the lifting rod and electrically connected to the pressure sensor and the display screen respectively.

[0015] Furthermore, this includes a light-emitting element mounted on the lifting rod near the diffuser.

[0016] Furthermore, the light-emitting component includes a disc, LED lights, and a fixing part. Multiple LED lights are arranged on the disc, and the LED lights are connected to a battery for power supply. The fixing part is installed on the lifting rod, and the disc is fixed on the fixing part.

[0017] Furthermore, the ventilation tube is made of a stretchable flexible tube.

[0018] Furthermore, quick-connect fittings are attached to both ends of the vent tube.

[0019] The high-altitude gas alarm calibration device provided by this utility model has significant advantages over the prior art, specifically in the following aspects:

[0020] I. Simple structure: The calibration device of this utility model is mainly composed of three parts: lifting rod, diffuser and vent pipe. The structure is simple and clear, without the need for complex mechanical structure or electronic components, which reduces manufacturing cost and maintenance difficulty.

[0021] II. Easy Operation: During use, the calibration personnel only need to hold the lifting rod to put the diffuser onto the high-altitude gas alarm and connect the external standard gas line to carry out the calibration. The operation process is simple and quick, requiring no cumbersome steps or professional skills, thus improving calibration efficiency.

[0022] III. High Adaptability: The calibration device of this invention can adapt to complex working environments. The lifting rod design allows the diffuser to be easily fitted into a gas alarm located at a high altitude, while the vent pipe ensures a stable supply of calibration standard gas to the diffuser. Whether in a kitchen, industrial production site, or other complex environment, this device can achieve excellent calibration results.

[0023] In summary, the high-altitude gas alarm calibration device provided by this utility model has significant advantages such as simple structure, convenient operation, and strong adaptability, and is of great significance for ensuring gas safety and improving calibration efficiency.

[0024] The preferred embodiments of this utility model and their beneficial effects will be further described in detail in conjunction with specific implementation methods. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but should not be construed as limiting the present invention. In the drawings:

[0026] Figure 1 This is a schematic diagram of the structure of the high-altitude gas alarm calibration device of this utility model.

[0027] The following are the reference numerals: 1. Lifting rod; 2. Diffuser; 3. Vent pipe; 11. Rod section; 12. Locking element; 21. Cover body; 22. Elastic membrane; 23. Detection hole; 24. Vent hole; 4. Pressure sensor; 5. Display screen; 6. Battery; 7. Light-emitting element; 71. Disc; 72. LED light; 73. Fixing part; 8. Quick connector. Detailed Implementation

[0028] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0029] Please see Figure 1 This utility model provides a high-altitude gas alarm calibration device, including a lifting rod 1, a diffuser 2, and a vent pipe 3. The diffuser 2 is installed at one end of the lifting rod 1 for the high-altitude gas alarm to be fitted inside. An axial hole is provided on the lifting rod 1 for the vent pipe 3 to pass through. One end of the vent pipe 3 is connected to the diffuser 2, and the other end extends from the end of the lifting rod 1 away from the diffuser 2, for connecting to an external calibration gas path. Calibration gas is delivered through the vent pipe 3 to the diffuser 2 to calibrate the high-altitude gas alarm.

[0030] When in use, hold the lifting rod 1 and put the diffuser 2 onto the high-altitude gas alarm. Connect the end of the vent pipe 3 that extends outside the lifting rod 1 to the external calibration gas circuit. The calibration gas for testing is delivered to the diffuser 2 through the vent pipe 3. If the high-altitude gas alarm alarms normally, the test is normal; if the high-altitude gas alarm does not alarm, the test is abnormal.

[0031] The high-altitude gas alarm calibration device provided by this utility model has significant advantages over the prior art, specifically in the following aspects:

[0032] I. Simple structure: The calibration device of this utility model is mainly composed of three parts: lifting rod 1, diffuser hood 2 and vent pipe 3. The structure is simple and clear, without the need for complex mechanical structure or electronic components, which reduces manufacturing cost and maintenance difficulty.

[0033] II. Convenient Operation: During use, the calibration personnel only need to hold the lifting rod 1 to place the diffuser 2 onto the high-altitude gas alarm and connect the external standard gas line to perform the calibration. The operation process is simple and quick, requiring no cumbersome steps or professional skills, thus improving calibration efficiency.

[0034] III. High Adaptability: The calibration device of this utility model can adapt to complex working environments. The design of the lifting rod 1 allows the diffuser 2 to be easily fitted into the gas alarm located at a high altitude, while the vent pipe 3 ensures that the calibration standard gas can be stably delivered into the diffuser hood. Whether in a kitchen, industrial production site, or other complex environment, this device can achieve good calibration results.

[0035] In summary, the high-altitude gas alarm calibration device provided by this utility model has significant advantages such as simple structure, convenient operation, and strong adaptability, and is of great significance for ensuring gas safety and improving calibration efficiency.

[0036] In this embodiment, the lifting rod 1 is a telescopic adjustment rod, which can be adjusted according to the installation height of the high-altitude gas alarm. The telescopic adjustment rod includes at least two rod segments 11 that are telescopically and slidably connected, and a locking member 12 for locking the connection between any two rod segments 11.

[0037] In this embodiment, the diffuser 2 includes a cover 21 and an elastic membrane 22. The outer circumference of the cover 21 gradually increases along the axial direction, forming a funnel-shaped structure. The funnel-shaped cover 21 can easily contact and fit with high-altitude gas alarms of different sizes, and the effective volume inside the cover 21 is small, which facilitates the discharge of air during testing. The end of the cover 21 with the smaller outer circumference is connected to one end of the lifting rod 1, and the elastic membrane 22 is installed at the end of the cover 21 with the larger outer circumference. The elastic membrane 22 has a detection hole 23 that matches the outer circumference of the high-altitude gas alarm for fitting the high-altitude gas alarm. The diameter of the detection hole 23 is slightly smaller than the outer circumference of the high-altitude gas alarm to ensure that the high-altitude gas alarm passes through the elastic membrane 22 but has a certain gas sealing performance.

[0038] In this embodiment, a vent 24 is provided on the outer peripheral wall of the cover 21 near the lifting rod 1 to allow air and excess standard gas to be discharged.

[0039] In this embodiment, the high-altitude gas alarm calibration device of this utility model includes a pressure sensor 4 for monitoring the pressure of standard gas inside the diffuser 2, a display screen 5 mounted on the lifting rod 1 and electrically connected to the pressure sensor 4 for displaying the pressure of standard gas inside the diffuser, and a battery 6 mounted inside the lifting rod 1 and electrically connected to both the pressure sensor 4 and the display screen 5. Calibrators can observe the pressure of the standard gas inside the diffuser in real time through the display screen 5, monitor pressure changes, and prevent excessively high standard gas pressure.

[0040] In this embodiment, to address the problem of poor lighting at the installation location of high-altitude gas alarms, the present invention provides a high-altitude gas alarm calibration device including a light-emitting element 7 mounted on a lifting rod 1 near a diffuser 2. The light-emitting element 7 includes a disc 71, LED lights 72, and a fixing part 73. Multiple LED lights 72 are arranged on the disc 71 and are powered by a battery 6. The fixing part 73 is mounted on the lifting rod 1, and the disc 71 is fixed to the fixing part 73. This invention installs a light-emitting element 7 on the lifting rod near the diffuser, which includes a disc 71, LED lights 72, and a fixing part 73. The multiple LED lights 72 arranged on the disc 71 provide sufficient light to illuminate the installation location of the high-altitude gas alarm. This design not only solves the problem of insufficient light during on-site calibration but also allows calibration personnel to observe the alarm more clearly, thereby improving the accuracy and efficiency of the calibration. In addition, the fixing part of the light-emitting element 7 is mounted on the lifting rod 1, and the disc 71 is fixed on the fixing part 73. This structure allows the light-emitting element 7 to be stably fixed on the lifting rod 1, making it less likely to fall off or shake, thus further ensuring the stability and safety of the inspection.

[0041] In this embodiment, the vent pipe 3 is made of a flexible, retractable tube such as a corrugated tube or a spiral tube, to be used in conjunction with the telescopic adjustment rod for telescopic adjustment. For ease of connection, quick connectors 8 are connected to both ends of the vent pipe 3.

[0042] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying importance; the words "bottom surface" and "top surface," "inner" and "outer" respectively refer to the geometric direction toward or away from a specific component.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0044] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A high altitude air gas alarm calibrating device, characterized in that, The device comprises a lifting rod (1), a diffusion cover (2) and a vent pipe (3), the diffusion cover (2) is installed on one end of the lifting rod (1) for sleeving a high-altitude gas alarm, a pipe hole is formed on the lifting rod (1) in the axial direction for the vent pipe (3) to pass through the lifting rod (1), one end of the vent pipe (3) is communicated with the diffusion cover (2), and the other end of the vent pipe (3) extends out from the other end of the lifting rod (1) away from the diffusion cover (2) for connecting an external calibration gas pipeline to deliver calibration gas into the diffusion cover (2) through the vent pipe (3), so that the high-altitude gas alarm is calibrated.

2. The high altitude air gas alarm calibrating device according to claim 1, wherein, The lifting rod (1) is a telescopic adjusting rod.

3. The high altitude air gas alarm calibrating device according to claim 2, wherein, The telescopic adjusting rod comprises at least two rod segments (11) telescopically and slidably connected and a locking member (12) for locking the connection between any two rod segments (11).

4. The high altitude air gas alarm calibrating device of claim 1, wherein, The diffusion cover (2) comprises a cover body (21) and an elastic film (22), the cover body (21) has a funnel-shaped structure with an outer dimension gradually increasing in the axial direction, the cover body (21) is connected to one end of the lifting rod (1) at the end with a smaller outer dimension, and the elastic film (22) is installed on the end of the cover body (21) with a larger outer dimension, and a detection hole (23) with a size matched with the high-altitude gas alarm is formed in the elastic film (22) for sleeving the high-altitude gas alarm.

5. The high altitude air gas alarm calibrating device of claim 4, wherein, An air vent hole (24) is formed in the outer wall of the end of the cover body (21) close to the lifting rod (1) for discharging air and excess calibration gas.

6. The elevated flammable gas alarm calibrating device of claim 1, wherein, The device comprises a gas pressure sensor (4) for monitoring the pressure of the calibration gas in the diffusion cover (2), a display screen (5) for displaying the pressure of the calibration gas in the diffusion cover (2) and installed on the lifting rod (1) and electrically connected with the gas pressure sensor (4), and a battery (6) installed in the lifting rod (1) and electrically connected with the gas pressure sensor (4) and the display screen (5).

7. The elevated flammable gas alarm calibrating device of claim 1, wherein, The device comprises a light-emitting member (7) installed on the lifting rod (1) close to the diffusion cover (2).

8. The elevated flammable gas alarm verificatio device of claim 7, wherein, The light-emitting member (7) comprises a disc (71), a plurality of LED lamps (72) and a fixing part (73), the plurality of LED lamps (72) are arranged on the disc (71), the LED lamps (72) are connected with the battery (6) for power supply, the fixing part (73) is installed on the lifting rod (1), and the disc (71) is fixed on the fixing part (73).

9. The elevated flammable gas alarm calibrating device of claim 1, wherein, The vent pipe (3) is a telescopic flexible pipe.

10. The elevated flammable gas alarm calibrating device of claim 1, wherein, The vent pipe (3) is connected with a quick connector (8) at both ends.

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