Fuel gas leakage early warning device

Abstract

The utility model relates to a fuel gas leakage early warning device, which comprises a top cover, a bottom cover, an antenna and a methane sensor, the top cover and the bottom cover are detachably and hermetically connected into a whole to form a cavity for accommodating electronic components, and the antenna is detachably and electrically connected with the top cover and / or the bottom cover; the methane sensor penetrates through the bottom cover and then is electrically connected with the top cover and the electronic component wrapped by the bottom cover; through the antenna which is detachably and electrically connected with the top cover and / or the bottom cover, the application scene of the early warning device is greatly expanded, the early warning device is particularly suitable for the underground use scene with complex installation space and inconvenient signal transmission, and the problems that the position of the antenna of a traditional gas early warning device is fixed and cannot be adjusted, and signal transmission is inconvenient are well solved. And the device can only be installed at the top but cannot be optimized according to actual signal requirements, so that the use condition of the early warning device is greatly expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of gas leakage warning, and in particular to a gas leakage warning device supporting liquid level over-limit alarm. Background Art

[0002] As a clean energy, gas is available in every corner of the city, providing convenience for citizens' lives. However, once gas leaks, it is easy to cause an explosion, so it is particularly important to monitor gas leaks. However, the gas pipelines are complicated. There are many pipelines, valve manholes, and valve chambers, and they are basically in a dark, humid and relatively closed environment. There is a risk of gas leakage, especially in valve manholes. Due to the large number of valve manholes, manual inspections using handheld monitors or vehicle-mounted monitors require a lot of manpower, and it is difficult to find problems in real time and deal with them.

[0003] In order to solve the problems existing in the existing technology, people have conducted long-term exploration and proposed several solutions, but they all have various problems:

[0004] 1. A Chinese patent application numbered CN201511003301.0 discloses an integrated explosion-proof networked intelligent manhole cover, wherein a permanent magnet is disposed on the float thereof, a Hall sensor (liquid level sensor) in the explosion-proof box senses the magnetic lines of force of the permanent magnet and inputs the signals detected by the gas sensor into the MCU processor, the float assembly is both the working element (permanent magnet) of the liquid level alarm switch and utilizes the four waterproof blocking rings of the float to protect the gas probe from water ingress when the float floats up; however, the liquid level sensor described therein is only a float limit switch, which can only measure whether the water level in the well exceeds a certain fixed height, but cannot accurately identify and monitor the actual specific liquid level height in the well.

[0005] 2. A Chinese patent with the authorization announcement number CN219810580U discloses a gas manhole leakage monitor, whose laser sensor is located at the bottom of the device, and by placing the antenna and GPS antenna externally on the top of the device, the position needs to be adjusted to the vicinity of the gap in the manhole cover during installation; since the device needs to determine the installation position according to the position of the gap in the manhole cover, its installation position has limitations, and cannot be adjusted at will according to the installation environment and actual needs. It cannot choose other installation positions underground, and it cannot be installed on the manhole cover. Moreover, the position of the device's own antenna on its device is fixed and cannot be adjusted. The antenna can only be installed on the top of the device, and it cannot be adjusted to the bottom of the device or other positions according to actual needs. Therefore, its installation position has limitations. In addition, in this solution, the transmission of the signal is highly dependent on the gap in the manhole cover to achieve signal transmission, and the signal stability and reliability of this method cannot be guaranteed.

[0006] In view of this, there is an urgent need for a gas leak warning device that can provide a multi-functional expansion interface and support accurate measurement of liquid level. While measuring the gas concentration in the underground environment in real time, it can also simultaneously and accurately monitor the liquid level height in the well, thereby realizing the concentration of multi-functional integrated monitoring and improving the efficiency and practicality of the overall monitoring and early warning system. Utility Model Content

[0007] In order to solve the above technical problems, the utility model provides a fuel gas leakage warning device, which can provide a multifunctional expansion interface, support accurate measurement of liquid level, and can simultaneously and accurately monitor the liquid level height in the well while measuring the gas concentration in the underground environment in real time, thereby realizing the concentration of multifunctional integrated monitoring and improving the efficiency and practicability of the overall monitoring and early warning system.

[0008] The installation method can be flexibly selected to be installed on the well wall or on the back of the well cover; especially when the equipment is installed on the back of the well cover, it can automatically monitor the operating status of the well cover in real time. When the well cover is damaged or abnormally opened, the monitoring alarm can be triggered synchronously; the general gas valve well is small; the well wall installer is restricted from going down to the valve well. The well cover can monitor the state of the well cover, and alarms can be issued for abnormalities and water immersion; after the well cover is opened, the operator has a larger working space in the valve well, which is more convenient for equipment maintenance itself. Personnel can monitor the equipment on the ground to replace batteries and reduce the health hazards of harmful gases in the valve well to operators.

[0009] To achieve the above purpose, the technical solution of the embodiment of the utility model is implemented as follows:

[0010] A gas leakage warning device comprises a top cover, a bottom cover, an antenna and a methane sensor, wherein the top cover and the bottom cover are detachably sealed and connected to form a cavity for accommodating electronic components, and after the antenna is detachably connected to the top cover and / or the bottom cover, it is electrically connected to the electronic components covered by the top cover and the bottom cover; after the methane sensor penetrates the bottom cover, it is electrically connected to the electronic components covered by the top cover and the bottom cover; the top cover comprises at least one first antenna interface, and after the first antenna interface penetrates the top end surface of the top cover shell, it is electrically connected to the electronic components covered by the top cover shell; through the antenna that is detachably electrically connected to the top cover and / or the bottom cover, the applicable scenarios of the warning device are greatly expanded, and it is particularly suitable for use scenarios such as underground where the installation space is complex and signal transmission is inconvenient, and it solves the problem that the antenna position of the traditional gas warning device is fixed and cannot be adjusted, and can only be installed on the top and cannot be optimized according to actual signal requirements, thereby greatly expanding the use conditions of the warning device.

[0011] Furthermore, the top cover also includes a top cover shell and a groove, wherein the groove is arranged on the top end surface of the top cover shell and extends along the vertical direction.

[0012] Furthermore, at least one mounting hole is processed on the top cover shell, and the mounting holes are arranged at intervals along the length direction of the top cover shell.

[0013] Furthermore, the bottom cover includes a bottom cover shell and at least one second antenna interface, and the second antenna interface passes through the bottom cover shell and is electrically connected to the electronic components covered by the bottom cover.

[0014] Furthermore, it also includes a water immersion sensor that penetrates the bottom cover and is electrically connected to the electronic components covered by the top cover and the bottom cover.

[0015] Furthermore, it also includes a mounting frame that is looped on the early warning device; the mounting frame includes: a back plate and bolts, wherein the back plate is connected to the early warning device, and the bolts penetrate the back plate and are connected to the manhole cover.

[0016] Furthermore, it also includes a protective frame which is sleeved around the periphery of the early warning device and is detachably fixed to the mounting frame.

[0017] Furthermore, it also includes a fixing frame; the fixing frame includes a second connecting plate and a mounting plate, the second connecting plate includes a fixing portion and a connecting portion, wherein the fixing portion is arranged on the top surface of the early warning device and is fixed to the early warning device; the connecting portion protrudes and extends unidirectionally along the width direction of the early warning device, and the mounting plate extends along the length direction of the early warning device, and the connecting portion of the second connecting plate passes through the mounting plate and is detachably connected to the mounting plate; the early warning device is any one of the above-mentioned fuel gas leakage early warning devices.

[0018] Furthermore, the second connecting plate includes a first connecting part, a second connecting part and a third connecting part, wherein the first connecting part is arranged to fit with the top surface of the early warning device; the second connecting part is a plane that is bent downward along the vertical direction after the first connecting part protrudes from the top surface of the early warning device; and the third connecting part is a plane that is bent upward along the vertical direction after the first connecting part protrudes from the top surface of the early warning device.

[0019] Furthermore, the second connecting plate also includes a fourth connecting portion, which is a boss retained after the top end surface of the first connecting portion protruding from the warning device is cut off.

[0020] In the above-mentioned embodiment, a gas leakage warning device is provided, in which the top cover and the bottom cover are made of cast aluminum corrosion-resistant material, so as to have good corrosion resistance. The outer surfaces of the top cover and the bottom cover are painted, which further improves the waterproof performance of the top cover and the bottom cover, and can completely isolate the internal cavity constructed by the top cover and the bottom cover from the external environment, thereby ensuring that the entire warning device can continue to work normally in a submerged state; by providing at least one second antenna interface on the bottom cover, different installation positions are provided for the connection of the antenna, ensuring that the warning device can conveniently install the antenna, thereby improving the installation flexibility of the entire warning device while ensuring the communication capability of the warning device; the water immersion sensor is provided to obtain the liquid level height in the well in real time and accurately, thereby solving the problem that the existing monitoring equipment cannot provide accurate liquid level height information and is unable to cope with the application occasions that require detailed liquid level data, and greatly expanding the effectiveness, reliability and applicability of data collection of the warning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of an embodiment of a fuel gas leakage warning device;

[0022] Figure 2 It is a structural schematic diagram of another embodiment of a fuel gas leakage warning device;

[0023] Figure 3 This is a schematic diagram of the installation structure of the fuel gas leakage warning device;

[0024] Figure 4 This is another schematic diagram of the installation structure of the fuel gas leakage warning device;

[0025] Figure 5 This is a schematic diagram of the installation of the gas leakage warning device and the manhole cover;

[0026] Figure 6 This is another schematic diagram of the installation structure of the fuel gas leakage warning device;

[0027] Figure 7 This is another schematic diagram of the installation structure of the fuel gas leakage warning device.

[0028] Description of reference numerals:

[0029] 100, manhole cover; 10, early warning device; 11, top cover; 111, top cover shell; 112, groove; 113, first antenna interface; 114, mounting hole; 12, bottom cover; 121, bottom cover shell; 122, second antenna interface; 123, liquid level sensor interface; 13, antenna; 14, water immersion sensor; 15, methane sensor; 20, mounting frame; 21, back plate; 22, bolts; 30, protection frame; 31, protection rod; 32, first connecting plate; 33, support beam; 40, fixing frame; 41, second connecting plate; 411, first connecting part; 412, second connecting part; 413, third connecting part; 414, fourth connecting part; 415, connecting hole; 42, mounting plate; 421, assembly hole; 422, fixing hole; 423, limit part. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] It should be noted that if the embodiments of the present utility model involve directional indications, such as up, down, left, right, front, back, etc., then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly. In addition, if the embodiments of the present utility model involve descriptions such as "first, second", "S1, S2", "step one, step two", etc., then such descriptions are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features or indicating the execution order of the method, etc. Those skilled in the art can understand that everything that does not violate the key points of the utility model under the technical concept of the utility model should be included in the protection scope of the utility model.

[0032] like Figure 1As shown, a gas leak warning device according to some exemplary embodiments includes a top cover 11, a bottom cover 12, an antenna 13 and a methane sensor 15, wherein the top cover 11 and the bottom cover 12 are detachably sealed and connected to form a cavity for storing electronic components, and the antenna 13 is detachably connected to the top cover 11 and / or the bottom cover 12, and is electrically connected to the electronic components covered by the top cover 11 and the bottom cover 12; the methane sensor 15 is electrically connected to the electronic components covered by the top cover 11 and the bottom cover 12 after penetrating the bottom cover 12. Therefore, through the detachable antenna electrically connected to the top cover and / or the bottom cover, the applicable scenarios of the warning device are greatly expanded, especially suitable for the use scenarios such as underground where the installation space is complex and the signal transmission is inconvenient, and the problem that the antenna position of the traditional gas warning device is fixed and cannot be adjusted, and can only be installed on the top and cannot be optimized according to the actual signal requirements is well solved, which greatly expands the use conditions of the warning device.

[0033] Optionally, the top cover 11 and the bottom cover 12 are made of cast aluminum corrosion-resistant material, so as to have good corrosion resistance. Preferably, the outer surfaces of the top cover 11 and the bottom cover 12 are painted, thereby further improving the waterproof performance of the top cover and the bottom cover, and the internal cavity constructed by the top cover and the bottom cover can be completely isolated from the external environment, thereby ensuring that the entire early warning device can continue to work normally in a submerged state.

[0034] Alternatively, if Figure 1 and Figure 2 As shown, the top cover 11 and the bottom cover 12 are connected as one body by bolts and are arranged to move together. The top cover 11 includes a top cover shell 111, a groove 112 and at least one first antenna interface 113, wherein the groove 112 is arranged on the top end surface of the top cover shell 111 and extends along the vertical direction; the first antenna interface 113 penetrates the top end surface of the top cover shell 111 and is electrically connected to the electronic components covered by the top cover shell 111. Preferably, the first antenna interface 113 is arranged at intervals on the bottom end surface of the groove 112. Therefore, by providing a groove on the top end surface of the top cover shell 111, a step difference is formed with the topmost surface of the top cover shell 111, and the first antenna interface 113 is arranged on the bottom surface of the groove 112, on the one hand, the protection of the first antenna interface 113 is ensured, and on the other hand, the interference with the first antenna interface 113 when fixedly installed through the top end surface of the top cover shell 111 is avoided. Furthermore, in order to facilitate the convenient installation of the warning device 10 , at least one mounting hole 114 is processed on the top cover shell 111 , and the mounting holes 114 are arranged at intervals along the length direction of the top cover shell 111 .

[0035] Optionally, the bottom cover 12 includes a bottom cover shell 121 and at least one second antenna interface 122, and the second antenna interface 122 penetrates the bottom cover shell 121 and is electrically connected to the electronic components covered by the bottom cover 12. Thus, by providing at least one second antenna interface on the bottom cover, different installation positions are provided for the connection of the antenna, ensuring that the early warning device can conveniently install the antenna, thereby improving the installation flexibility of the entire early warning device while ensuring the communication capability of the early warning device. More preferably, the bottom cover 12 also includes a liquid level sensor interface 123 to provide an installation position for the liquid level sensor.

[0036] In the implementation mode of this application, Figure 2 As shown, in order to accurately grasp the water level in the well, a water immersion sensor 14 is also included, which penetrates the bottom cover 12 and is electrically connected to the electronic components covered by the top cover 11 and the bottom cover 12. Therefore, the water immersion sensor can accurately obtain the liquid level height in the well in real time, thereby solving the problem that the existing monitoring equipment cannot provide accurate liquid level height information and is incapable of being used in those applications that require detailed liquid level data, and greatly expands the effectiveness, reliability and applicability of data collection of the early warning device.

[0037] In summary, the warning device provided by the utility model has a top cover and a bottom cover made of cast aluminum corrosion-resistant material, so that it has good corrosion resistance. The outer surfaces of the top cover and the bottom cover are painted, which further improves the waterproof performance of the top cover and the bottom cover, and can make the internal cavity constructed by the top cover and the bottom cover completely isolated from the external environment, thereby ensuring that the entire warning device can continue to work normally in a submerged state; by providing at least one second antenna interface on the bottom cover, different installation positions are provided for the connection of the antenna, ensuring that the warning device can easily install the antenna, thereby ensuring the communication capability of the warning device and improving the installation flexibility of the entire warning device; the water immersion sensor is provided to obtain the liquid level height in the well in real time and accurately, thereby solving the problem that the existing monitoring equipment cannot provide accurate liquid level height information, and is unable to do so in applications where detailed liquid level data is required, greatly expanding the effectiveness, reliability and applicability of data collection of the warning device.

[0038] In the preferred embodiment of the present application, Figure 1 , Figure 3 and Figure 5 As shown, a mounting structure of a gas leakage warning device is provided, which is used to install and fix the warning device 10 to the manhole cover 100. Specifically, the mounting structure includes a mounting frame 20 that is sleeved on the warning device 10, wherein the warning device 10 is connected to the manhole cover 100 as a whole through the mounting frame 20, and is set to move together.

[0039] Optionally, the mounting frame 20 includes a back plate 21 and bolts 22, wherein the back plate 21 is connected to the warning device 10, and the bolts 22 penetrate the back plate 21 and are connected to the manhole cover 100. Thus, the warning device and the manhole cover are connected as a whole through the back plate, and are set to move together. The mounting structure provided in the preferred embodiment of the present application is particularly suitable for the working condition where the manhole cover and the manhole seat are designed to be separated. The warning device can be fixed on the manhole cover and then installed together with the manhole cover and the manhole seat, which greatly improves the efficiency of installation.

[0040] Optionally, in order to prevent the early warning device 10 from being damaged during the transfer process after being fixed to the manhole cover, a protective frame 30 is also included, which is sleeved around the early warning device 10 and detachably fixed to the mounting frame 20. Thus, the early warning device is protected in three dimensions by the protective frame sleeved around the early warning device, thereby improving the safety and stability of the entire monitoring system.

[0041] Specifically, Figure 3 and Figure 4 As shown, the protection frame 30 includes at least one protection rod 31 and at least one first connecting plate 32. The two ends of the protection rod 31 are connected to the mounting frame 20 through the first connecting plate 32 after being bent, forming a closed-loop fence surrounding the outside of the early warning device 10. Preferably, in order to reduce the installation interference of the early warning device, the first connecting plate 32 is arranged at the end of the protection rod 31 close to the end side of the mounting frame 20.

[0042] Optionally, in order to improve the overall rigidity of the protection frame 30, at least one support beam 33 is further included between the protection bars 31, and both ends of the support beam 33 are respectively fixed to the protection bars 31. Preferably, in order to ensure that the protection bars 31 are evenly and stably spaced, notches for accommodating the protection bars 31 are provided at both ends of the support beam 33. Preferably, the shape of the notch matches the shape of the protection bar 31. In the preferred embodiment of the present application, the protection bar 31 is formed by bending a cylinder.

[0043] In summary, the utility model provides a mounting frame for fixing the early warning device on the manhole cover, and the early warning device and the manhole cover are connected as a whole through a back plate, and the devices move together. This mounting structure is particularly suitable for the working condition where the manhole cover and the manhole seat are designed to be separated. The early warning device can be fixed on the manhole cover and then installed together with the manhole cover and the manhole seat. The efficiency of the installation is greatly improved; the protection frame that is ringed around the side of the early warning device can achieve three-dimensional protection of the early warning device, thereby improving the safety and stability of the entire monitoring system.

[0044] In another preferred embodiment of the present application, Figure 1 , Figure 6 and Figure 7As shown, a fixing structure for installing a gas leakage warning device on a well wall is provided. Specifically, a fixing frame 40 for installing the warning device 10 includes a second connecting plate 41 and a mounting plate 42, and the second connecting plate 41 includes a fixing portion and a connecting portion, wherein the fixing portion is arranged on the top surface of the warning device 10 and is fixed to the warning device 10; the connecting portion protrudes and extends in one direction along the width direction of the warning device 10, and the mounting plate 42 is extended along the length direction of the warning device 10. After the connecting portion of the second connecting plate 41 passes through the mounting plate 42, it is detachably connected to the mounting plate 42. As a result, the warning device fixed to the second connecting plate is detachably fixed to the mounting plate through the connecting portion of the second connecting plate, and then fixed to the side wall of the well through the mounting plate, thereby realizing the quick installation of the well wall-mounted warning device.

[0045] Optionally, in order to ensure the reliability of the connection between the second connecting plate and the mounting plate, the second connecting plate 41 includes a first connecting portion 411, a second connecting portion 412 and a third connecting portion 413, wherein the first connecting portion 411 is arranged to fit the top surface of the early warning device 10; the second connecting portion 412 is a plane that is bent downward along the vertical direction after the first connecting portion 411 protrudes from the top surface of the early warning device 10; and the third connecting portion 413 is a plane that is bent upward along the vertical direction after the first connecting portion 411 protrudes from the top surface of the early warning device 10. Preferably, the third connecting portion 413 and the second connecting portion 412 are arranged perpendicular to the first connecting portion 411. Thus, by bending the part of the first connecting portion 411 that protrudes from the top surface of the early warning device 10 and bending in different directions along the vertical direction, a stable and reliable connection bracket is formed with the first connecting portion 411. This ensures that the early warning device can be stably and reliably fixed on the well wall.

[0046] Optionally, in order to improve the convenience and reliability of assembly between the second connecting plate and the mounting plate, the second connecting plate 41 further includes a fourth connecting portion 414, which is a boss retained after the top surface of the first connecting portion 411 protruding from the warning device 10 is cut. Preferably, the fourth connecting portion 414 penetrates the mounting plate 42 and is engaged with the mounting plate 42.

[0047] Optionally, in order to ensure the stability and strength of the early warning device signal, the flexibility of the antenna installed in the early warning device is improved. The first connecting portion 411 is also provided with at least one connecting hole 415, and the connecting hole 415 is arranged coaxially with the antenna mounting interface of the early warning device 10. For example, the connection hole 415 is used to provide an installation position for the antenna to be installed on the top surface of the early warning device 10, so that the antenna is closer to the wellhead, which is conducive to enhancing the signal strength of the antenna. Thus, different installation positions are provided for the installation of the antenna of the early warning device, and the antenna can be flexibly adjusted to a suitable position according to specific needs to ensure the signal strength of the antenna.

[0048] Optionally, the mounting plate 42 is configured to be an arched structure with a protrusion in the middle and two flat extensions at both ends, so as to provide a connection portion for mounting with the second connecting plate 41. Specifically, the mounting plate 42 is provided with at least one assembly hole 421 and at least two fixing holes 422, wherein the assembly hole 421 is provided on the protrusion in the middle of the mounting plate 42, and the fixing holes 422 are provided on the end surfaces of the two flat ends of the mounting plate 42. Preferably, in order to achieve rapid installation and positioning with the second connecting plate 41, a limiting portion 423 extending upward and retained in the cavity of the assembly hole 421 is also included. In a preferred embodiment of the utility model, after the limiting portion 423 penetrates the fourth connecting portion 414, a position limiting setting is formed with the first connecting portion 411.

[0049] In summary, the utility model provides a fixing structure for fixing the early warning device on the well wall, and provides an installation position for the antenna on the top surface of the early warning device through a connecting hole, so that the antenna is closer to the wellhead, which is beneficial to enhancing the signal strength of the antenna, and provides different installation positions for the installation of the antenna of the early warning device. The antenna can be flexibly adjusted to a suitable position according to specific needs to ensure the signal strength of the antenna; the connection part of the second connecting plate is detachably fixed to the mounting plate, and then fixed to the side wall of the well through the mounting plate, thereby realizing the quick installation of the early warning device on the well wall.

[0050] In addition, the specific structures or models of the electronic components involved above, as well as the specific paths, principles or other structural shapes for signal transmission and conversion to achieve equivalent functions should be easy for technical personnel in this field to conceive, so they will not be described in detail here.

[0051] In addition, it also includes cables and other auxiliary equipment, such as control switches, etc. This should be easy to conceive for those skilled in the art, so it will not be described in detail here.

[0052] The waste collection device provided in the above embodiments of the present application has at least the following characteristics:

[0053] The early warning device provided in the embodiment of the present application has a top cover and a bottom cover made of cast aluminum corrosion-resistant material, so that it has good corrosion resistance. The outer surfaces of the top cover and the bottom cover are painted, which further improves the waterproof performance of the top cover and the bottom cover, and can make the internal cavity constructed by the top cover and the bottom cover completely isolated from the external environment, thereby ensuring that the entire early warning device can continue to work normally in a submerged state; by providing at least one second antenna interface on the bottom cover, different installation positions are provided for the connection of the antenna, ensuring that the early warning device can easily install the antenna, thereby ensuring the communication capability of the early warning device and improving the installation flexibility of the entire early warning device; the water immersion sensor provided can obtain the liquid level height in the well in real time and accurately, thereby solving the problem that the existing monitoring equipment cannot provide accurate liquid level height information and is unable to cope with the application scenarios that require detailed liquid level data, and greatly expands the effectiveness, reliability and applicability of data collection of the early warning device.

[0054] The above description is only a specific implementation mode of the present utility model. The technical features of the above-mentioned embodiments can be arbitrarily combined. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A fuel gas leakage warning device, characterized in that: The invention comprises a top cover (11), a bottom cover (12), an antenna (13) and a methane sensor (15), wherein the top cover (11) and the bottom cover (12) are detachably sealed and connected to form a whole, forming a cavity for storing electronic components; the antenna (13) is detachably connected to the top cover (11) and / or the bottom cover (12), and is electrically connected to the electronic components covered by the top cover (11) and the bottom cover (12); the methane sensor (15) penetrates the bottom cover (12), and is electrically connected to the electronic components covered by the top cover (11) and the bottom cover (12); the top cover (11) comprises at least one first antenna interface (113), and the first antenna interface (113) penetrates the top end surface of the top cover shell (111), and is electrically connected to the electronic components covered by the top cover shell (111).

2. The fuel gas leakage warning device according to claim 1, characterized in that: The top cover (11) further comprises a top cover shell (111) and a groove (112), wherein the groove (112) is arranged on the top end surface of the top cover shell (111) and extends along the vertical direction.

3. The fuel gas leakage warning device according to claim 2, characterized in that: At least one mounting hole (114) is also processed on the top cover shell (111), and the mounting holes (114) are arranged at intervals along the length direction of the top cover shell (111).

4. The fuel gas leakage warning device according to claim 1, characterized in that: The bottom cover (12) comprises a bottom cover shell (121) and at least one second antenna interface (122); the second antenna interface (122) penetrates the bottom cover shell (121) and is electrically connected to an electronic component covered by the bottom cover (12).

5. The fuel gas leakage warning device according to claim 1, characterized in that: It also includes a water immersion sensor (14) that penetrates the bottom cover (12) and is electrically connected to the electronic components covered by the top cover (11) and the bottom cover (12).

6. The fuel gas leakage warning device according to claim 1, characterized in that: It also includes a mounting frame (20) that is looped around the early warning device; The mounting frame (20) comprises a back plate (21) and bolts (22), wherein the back plate (21) is connected to the early warning device, and the bolts (22) penetrate the back plate (21) and are connected to the well cover.

7. The fuel gas leakage warning device according to claim 6, characterized in that: It also includes a protective frame (30) which is sleeved around the periphery of the early warning device and is detachably fixed to the mounting frame (20).

8. The fuel gas leakage warning device according to claim 1, characterized in that: The device also includes a fixing frame (40); the fixing frame (40) includes: a second connecting plate (41) and a mounting plate (42); the second connecting plate (41) includes a fixing portion and a connecting portion; the fixing portion is arranged on the top surface of the warning device and is fixed to the warning device; the connecting portion protrudes and extends in one direction along the width direction of the warning device; the mounting plate (42) extends and is arranged along the length direction of the warning device; the connecting portion of the second connecting plate (41) penetrates the mounting plate (42) and is detachably connected to the mounting plate (42).

9. The fuel gas leakage warning device according to claim 8, characterized in that: The second connecting plate (41) includes a first connecting portion (411), a second connecting portion (412) and a third connecting portion (413), wherein the first connecting portion (411) is arranged to fit the top surface of the warning device; the second connecting portion (412) is a plane that is bent and extended downward in a vertical direction after the first connecting portion (411) protrudes from the top surface of the warning device; and the third connecting portion (413) is a plane that is bent and extended upward in a vertical direction after the first connecting portion (411) protrudes from the top surface of the warning device.

10. The fuel gas leakage warning device according to claim 9, characterized in that: The second connecting plate (41) further comprises a fourth connecting portion (414), wherein the fourth connecting portion (414) is a boss retained after the top end surface of the first connecting portion (411) protruding from the warning device is cut off.

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