Natural gas metering device with leakage warning function

Abstract

The utility model relates to the technical field of natural gas metering equipment, and particularly discloses a natural gas metering device with a leakage warning function, which comprises a metering mechanism and a leakage monitoring mechanism assembled on the metering mechanism, the metering mechanism comprises a protective shell, a metering chamber and a monitoring chamber are formed in the protective shell, a fuel gas meter is fixedly installed in the metering chamber, and the top of the fuel gas meter communicates with a fuel gas connecting pipe extending out of the protective shell; the leakage monitoring mechanism comprises an air suction ring fixedly installed on the top of the protective shell and a monitoring pipe assembled in the monitoring chamber. According to the utility model, air around the gas connecting pipe can be continuously extracted and monitored in real time, and when gas leakage occurs at the gas connecting pipe, the gas leakage can be timely monitored so as to trigger an alarm, so that personnel can quickly find the leakage condition and conveniently take countermeasures in time.

Description

Technical Field

[0001] This utility model belongs to the technical field of natural gas metering equipment, specifically relating to a natural gas metering device with a leakage warning function. Background Technology

[0002] Natural gas, as a clean and efficient energy source, is widely used in modern society, including residential life, industrial production, and transportation. To ensure the effective utilization and safe supply of natural gas, natural gas metering devices have become indispensable. Traditional natural gas metering devices are mainly based on the flow meter principle, calculating the amount of natural gas used by measuring the flow rate of gas through the pipeline. These devices have been continuously improved in structural design and measurement accuracy to meet the needs of different application scenarios. With the development of Internet of Things (IoT) technology, modern natural gas metering devices also have remote monitoring and data transmission capabilities, allowing users to understand natural gas usage in real time and manage it remotely. These technological advancements not only improve the accuracy of natural gas metering but also enhance ease of use, providing strong support for the widespread application of natural gas.

[0003] However, most current natural gas metering devices only have metering functions and cannot monitor whether natural gas pipelines are leaking in real time. Natural gas leaks are usually located at the connection between the gas pipe and the metering device. Although there are gas leak detectors on the market, they often can only be detected after the gas leak has reached a certain amount, which is inconvenient for timely detection when a gas leak occurs. This leads to delayed detection of leaks and can easily cause safety hazards. Therefore, the applicant proposes a natural gas metering device with a leak warning function to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a natural gas metering device with a leak warning function, which aims to improve the problem that gas leaks can only be detected after reaching a certain amount, making it inconvenient to detect leaks in a timely manner when they occur, thus leading to delayed detection and potential safety hazards.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A natural gas metering device with a leak warning function includes:

[0007] A metering mechanism and a leakage monitoring mechanism mounted on the metering mechanism;

[0008] The metering mechanism includes a protective shell, inside which are respectively a metering chamber and a monitoring chamber. A gas meter is fixedly installed inside the metering chamber, and a gas connection pipe extending out of the protective shell is connected to the top of the gas meter.

[0009] The leak detection mechanism includes an air intake ring fixedly installed on the top of the protective shell and a monitoring tube assembled inside the monitoring chamber, as well as an air intake box fixedly installed on the inner wall of the monitoring chamber. The air intake ring wraps around the gas connection pipe, and the inner wall of the air intake ring has multiple through holes arranged in a ring array. A gas monitor is connected to the top of the monitoring tube, and the sensing probe of the gas monitor extends into the monitoring tube.

[0010] Preferably, the monitoring tube is equipped with a first solenoid valve, and a conduit connects the monitoring tube to the air intake box.

[0011] Preferably, a fan is connected inside the air intake box, and a delivery pipe is connected between the top of the air intake box and the air intake ring.

[0012] Preferably, the bottom of the monitoring tube is connected to an outlet tube extending out of the protective shell, and a second solenoid valve is provided on the outlet tube.

[0013] Preferably, an audible and visual alarm is fixedly installed on one side of the protective shell, and the audible and visual alarm is electrically connected to the gas monitor.

[0014] Preferably, a maintenance cover is hinged to the front end of the protective shell, and mounting bases are fixedly installed on both sides of the protective shell.

[0015] Preferably, the surface of the maintenance cover is provided with an observation window, which corresponds to the metering chamber and the monitoring chamber.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] (1) This utility model is equipped with a leak detection mechanism, which can surround the outside of the gas connection pipe through the air suction ring. The air suction box can continuously draw air around the gas connection pipe and deliver it to the monitoring pipe for real-time monitoring by the monitoring instrument. When a gas leak occurs at the gas connection pipe, it can be detected in time and trigger an alarm. This allows personnel to quickly discover the leak and take timely countermeasures.

[0018] (2) The present invention has an outlet pipe at the bottom of the monitoring tube, which can be conveniently connected to equipment such as gas storage tank. When a gas leak occurs, the gas leak can be sucked into the monitoring tube by the suction ring, and the leaked gas can be transported to the storage tank or other equipment for storage through the outlet pipe. This can effectively reduce the pollution of air caused by gas leaks into the external environment, and at the same time effectively reduce safety hazards. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the protective shell of this utility model;

[0021] Figure 3 This is a cross-sectional structural diagram of the protective shell of this utility model;

[0022] Figure 4 This is a schematic diagram of the leakage monitoring mechanism of this utility model;

[0023] Figure 5 This is a cross-sectional view of the air intake box of this utility model;

[0024] Figure 6 This is a schematic cross-sectional view of the monitoring tube of this utility model;

[0025] In the diagram: 1. Metering mechanism; 11. Protective casing; 12. Maintenance cover; 13. Observation window; 14. Audible and visual alarm; 15. Metering chamber; 16. Monitoring chamber; 17. Mounting base; 2. Leakage monitoring mechanism; 21. Suction ring; 22. Through hole; 23. Delivery pipe; 24. Suction box; 25. Conduit; 26. Monitoring pipe; 27. Gas monitor; 28. First solenoid valve; 29. ​​Outlet pipe; 210. Second solenoid valve; 211. Fan; 3. Gas meter; 31. Gas connection pipe. Detailed Implementation

[0026] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," 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 relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a 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.

[0029] Example 1:

[0030] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a natural gas metering device with a leak warning function includes:

[0031] Measuring mechanism 1 and leakage monitoring mechanism 2 mounted on measuring mechanism 1;

[0032] The metering mechanism 1 includes a protective shell 11, and a metering chamber 15 and a monitoring chamber 16 are respectively opened inside the protective shell 11. A gas meter 3 is fixedly installed inside the metering chamber 15, and a gas connection pipe 31 extending out of the protective shell 11 is connected to the top of the gas meter 3.

[0033] The leak detection mechanism 2 includes an air intake ring 21 fixedly installed on the top of the protective shell 11 and a monitoring tube 26 assembled inside the monitoring chamber 16, as well as an air intake box 24 fixedly installed on the inner wall of the monitoring chamber 16. The air intake ring 21 wraps around the gas connection pipe 31. The inner wall of the air intake ring 21 has multiple through holes 22 arranged in a ring array. A gas monitor 27 is connected to the top of the monitoring tube 26. The sensing probe of the gas monitor 27 extends into the monitoring tube 26.

[0034] As can be seen from the above, when in use, the metering mechanism 1 is fixed in a suitable position, and the natural gas pipe is connected to the gas connection pipe 31, so that the natural gas can be metered through the gas meter 3. The suction box 24 can generate a suction effect, and the air around the gas connection pipe 31 can be sucked into the suction ring 21 through the through hole 22. The air drawn in through the suction box 24 can be introduced into the monitoring pipe 26, so that the gas can pass through the sensing probe of the gas monitor 27. The gas monitor 27 can monitor the introduced air in real time. When a leak occurs at the gas connection pipe 31, it can be detected in time and trigger an alarm, so that personnel can quickly discover the leak and take timely countermeasures.

[0035] Depend on Figure 4 and Figure 6 It is known that a first solenoid valve 28 is installed on the monitoring tube 26, and a conduit 25 connects the monitoring tube 26 and the air intake box 24.

[0036] As can be seen from the above, the air intake box 24 can easily introduce air into the monitoring tube 26 through the conduit 25. When the gas monitor 27 does not detect a gas leak in the monitoring tube 26, the first solenoid valve 28 can be opened, allowing air to be discharged to the outside through the monitoring tube 26.

[0037] For details, please refer to Figure 4 As shown, a fan 211 is connected inside the air intake box 24, and a delivery pipe 23 is connected between the top of the air intake box 24 and the air intake ring 21.

[0038] As can be seen from the above, the fan 211 can generate suction, which can be used to draw air into the suction ring 21 through the delivery pipe 23, so that the air around the gas connection pipe 31 can be drawn into the suction ring 21 and delivered to the monitoring pipe 26.

[0039] Specifically, as shown in the figure, the bottom of the monitoring tube 26 is connected to an outlet tube 29 extending out of the protective shell 11, and a second solenoid valve 210 is provided on the outlet tube 29.

[0040] As can be seen from the above, when a gas leak is detected by the monitoring pipe 26, the first solenoid valve 28 can be automatically closed, preventing the leaked gas from being discharged to the outside through the monitoring pipe 26. The second solenoid valve 210 can be opened, allowing the leaked gas to be introduced into the discharge pipe 29. The discharge pipe 29 can then be used to transport the leaked gas to storage tanks or other equipment for storage, effectively reducing the pollution of the air caused by gas leaks into the external environment and effectively reducing safety hazards.

[0041] Example 2:

[0042] refer to Figure 2 As shown, an audible and visual alarm 14 is fixedly installed on one side of the protective shell 11, and the audible and visual alarm 14 is electrically connected to the gas monitor 27.

[0043] As can be seen from the above, when a gas leak is detected by the gas monitor 27, it can trigger the audible and visual alarm 14 to sound an alarm and flash the light, which can promptly remind personnel to check and handle the situation.

[0044] refer to Figure 1 As shown, a maintenance cover 12 is hinged to the front end of the protective shell 11, and mounting bases 17 are fixedly installed on both sides of the protective shell 11.

[0045] As can be seen from the above, by opening the maintenance cover 12, the internal gas meter 3 and leakage monitoring mechanism 2 can be easily maintained. By using bolts and mounting bracket 17, the protective shell 11 can be easily fixed in a suitable position for use.

[0046] refer to Figure 1 As shown, the surface of the maintenance cover 12 is provided with an observation window 13, which corresponds to the metering chamber 15 and the monitoring chamber 16.

[0047] As can be seen from the above, the observation window 13 allows personnel to easily observe the gas metering value displayed on the gas meter 3, and also facilitates the observation of the operating status of the leak detection mechanism 2, enabling timely maintenance and handling in case of malfunction.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A natural gas metering device with a leak warning function, characterized in that, include: A metering mechanism (1) and a leakage monitoring mechanism (2) mounted on the metering mechanism (1); The metering mechanism (1) includes a protective shell (11), and a metering chamber (15) and a monitoring chamber (16) are respectively opened inside the protective shell (11). A gas meter (3) is fixedly installed inside the metering chamber (15), and a gas connection pipe (31) extending out of the protective shell (11) is connected to the top of the gas meter (3). The leak detection mechanism (2) includes an air intake ring (21) fixedly installed on the top of the protective shell (11) and a monitoring tube (26) assembled inside the monitoring chamber (16), as well as an air intake box (24) fixedly installed on the inner wall of the monitoring chamber (16). The air intake ring (21) wraps around the periphery of the gas connection pipe (31). The inner wall of the air intake ring (21) has multiple through holes (22) arranged in a ring array. A gas monitor (27) is connected to the top of the monitoring tube (26), and the sensing probe of the gas monitor (27) extends into the monitoring tube (26).

2. A natural gas metering device with leakage warning function according to claim 1, characterized in that: The monitoring tube (26) is equipped with a first solenoid valve (28), and a conduit (25) connects the monitoring tube (26) and the air intake box (24).

3. A natural gas metering device with leakage warning function according to claim 1, characterized in that: A fan (211) is connected inside the air intake box (24), and a delivery pipe (23) is connected between the top of the air intake box (24) and the air intake ring (21).

4. A natural gas metering device with leakage warning function according to claim 1, characterized in that: The bottom of the monitoring tube (26) is connected to an outlet tube (29) extending out of the protective shell (11), and a second solenoid valve (210) is provided on the outlet tube (29).

5. A natural gas metering device with leakage warning function according to claim 1, characterized in that: An audible and visual alarm (14) is fixedly installed on one side of the protective shell (11), and the audible and visual alarm (14) is electrically connected to the gas monitor (27).

6. A natural gas metering device with leakage warning function according to claim 1, characterized in that: A maintenance cover (12) is hinged to the front end of the protective shell (11), and mounting bases (17) are fixedly installed on both sides of the protective shell (11).

7. A natural gas metering device with leakage warning function according to claim 6, characterized in that: The surface of the maintenance cover (12) is provided with an observation window (13), which corresponds to the metering chamber (15) and the monitoring chamber (16).

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