Fixed leak detection device for gas pipeline

Abstract

The utility model relates to a fixed leak detection device for a gas pipeline, which comprises a fixed module and a leak detection module, the fixed module comprises a fixed base, a longitudinal beam, a cross beam, an upper fixed frame and a lower fixed frame, and the fixed base is fixed on the ground and respectively arranged on two sides of a channel formed by the pipeline; the longitudinal beams and the cross beams form a frame structure and enclose the gas pipeline, the supporting legs are arranged at the bottoms of the longitudinal beams and fixed to the base, and the lower fixing frame is arranged on the longitudinal beams. The upper fixing frame is fixed on the cross beam; the upper fixing frame and the lower fixing frame are both of a supporting frame structure used for hooping a gas pipeline and are used for supporting the gas pipeline. The leakage detection module comprises a plurality of combustible gas sensors and a control circuit box, the combustible gas sensors are arranged on the cross beam and the longitudinal beam respectively, the control circuit box is connected with the combustible gas sensors through lines, and when the combustible gas sensors detect combustible gas leakage, electric signals are fed back to the control circuit box; and an alarm integrated in the control circuit box buzzes to give an alarm.

Description

Technical Field

[0001] This utility model relates to the field of combustible gas monitoring, and in particular to a natural gas leak detection device. Background Technology

[0002] Natural gas is an essential fuel resource for residential life. Gas suppliers deliver gas to residents through pipelines, which come in two forms: underground and exposed. Some older urban areas, or those yet to be upgraded, still use exposed pipelines. Some suburban and rural areas also use exposed pipelines. Finally, some areas, due to historical reasons, cannot use underground pipelines, such as around railway tracks or under bridges, and can only use exposed pipelines. To avoid disrupting residents' daily lives and causing traffic obstruction, exposed pipelines are often designed with bends and elevations to create a passageway. However, based on daily inspection experience, pipelines at bends and in areas with heavy pedestrian and vehicular traffic are most prone to leaks. This is sometimes due to inadequate maintenance caused by prolonged exposure, and sometimes due to the inherent vulnerability of pipelines at intersections with roads. Therefore, a solution is needed to address the problem of leaks in exposed gas pipelines. Summary of the Invention

[0003] To solve the above problems, a fixed leak detection device for gas pipelines is provided. The provided technical solution includes a fixing module and a leak detection module. The fixing module includes a fixing base, longitudinal beams, cross beams, an upper fixing frame, and a lower fixing frame, wherein:

[0004] The fixed base is fixed to the ground, and there are two sets of them, which are arranged on both sides of the channel formed by the pipe.

[0005] The longitudinal beams and transverse beams form a frame structure that encloses the gas pipeline that forms the passage. The bottom of the longitudinal beams is equipped with support legs that are inserted into the fixed base. The lower fixed frame is set on the longitudinal beams, and the upper fixed frame is fixed on the transverse beams.

[0006] Both the upper and lower fixing frames are support structures used to clamp the gas pipeline, providing support for the gas pipeline;

[0007] The leak detection module includes combustible gas sensors and a control circuit box. Multiple combustible gas sensors are respectively installed on the crossbeams and longitudinal beams. The control circuit box is connected to the combustible gas sensors through wiring. When the combustible gas sensor detects a combustible gas leak, it feeds back an electrical signal to the control circuit box, and the alarm integrated in the control circuit box sounds an alarm.

[0008] Based on the above technical solution, the fixed base is partially buried underground and fixed with ground nails.

[0009] Based on the above technical solution, the leak detection module also includes an anti-theft mechanism, which includes configuration A and configuration B. Both configuration A and configuration B include a base and an anti-theft box. The difference is that the base I and anti-theft box I of configuration B have through holes for gas pipes to pass through, and the base II and anti-theft box II of configuration A are fixed to the bottom of the crossbeam, while the base I of configuration B is fixed to the lower fixing frame.

[0010] The combustible gas sensor is mounted on the base, and the anti-theft box is fixed to the base using anti-theft screws. The anti-theft box has a through hole for the combustible gas sensor to work, and the wiring between the combustible gas sensor and the control circuit box passes through the anti-theft mechanism.

[0011] Based on the above technical solution, the height of the anti-theft box is less than the height of the combustible gas sensor. The anti-theft box is provided with a protrusion to accommodate the combustible gas sensor, and a through hole is opened on the protrusion. An anti-theft grille is also provided inside the through hole.

[0012] Based on the above technical solution, the protrusion is a pyramidal structure.

[0013] Based on the above technical solution, the protrusion is a conical structure.

[0014] Beneficial effects: 1. Leak detection modules, capable of long-term monitoring, are deployed on pipeline sections most prone to leaks. The sensors and control circuits of these modules are separately arranged, with multiple sensors distributed throughout a specific area of ​​the pipeline, expanding the detection range and preventing missed detections. 2. In pipeline sections with insufficient protection and stability, fixed modules are used to reinforce and protect the pipeline, while also providing an installation base for the leak detection modules. 3. Anti-theft mechanisms are used to protect the components of the leak detection modules. These components are placed in anti-theft boxes, protecting the leak detection modules without affecting their operation. 4. Various configurations of the anti-theft mechanisms are available to suit different installation locations and environments. Attached Figure Description

[0015] Figure 1 This is a front view diagram of the background technology.

[0016] Figure 2 This is a front view schematic diagram of the present utility model.

[0017] Figure 3 This is a schematic side view sectional diagram of the present invention.

[0018] Figure 4 For the present utility model Figure 2 A partially enlarged schematic diagram (I).

[0019] Figure 5 For the present utility model Figure 2A partially enlarged schematic diagram (II).

[0020] Figure 6 This is a bottom view of the A-configuration of the anti-theft mechanism of this utility model.

[0021] Figure 7 For the present utility model Figure 6 A schematic diagram of the front view section.

[0022] Figure 8 This is a bottom view of configuration B of the anti-theft mechanism of this utility model.

[0023] Figure 9 For the present utility model Figure 8 A schematic diagram of the front view section. Detailed Implementation

[0024] Example 1.

[0025] Reference Figures 1 to 5 As shown, in this embodiment... Figure 1 Based on the existing conditions, a leak detection unit capable of long-term monitoring for leaks was installed on gas pipeline 7 (hereinafter referred to as pipeline 7). Figure 1 This is a typical example of changing the direction of pipeline 7 to create a pedestrian or vehicular passage. Figure 2 and Figure 3 The diagram illustrates the installation of a fixing module on the outside of the channel, which reinforces and protects the pipe 7, improving its stability. The fixing base 1 is fixed to the ground for mounting the longitudinal beam 2. Two sets are used, one on each side of the channel. Each set has two fixing bases 1, positioned on either side of the pipe 7's length. The two legs 4 at the bottom of the longitudinal beam 2 are inserted into the two fixing bases 1 for fixation. To improve the stability of the fixing base 1, it can be partially buried in the soil and then secured using ground nails 10 or similar methods. Alternatively, the two fixing bases 1 in each set can be combined to form one fixing base 1 per set, further enhancing stability. Figure 3 As shown, the fixed base 1 passes through the bottom of the pipe 7 and a groove 20 is opened to accommodate the pipe 7. The fixed base 1 needs to be partially buried in the soil.

[0026] In this embodiment, the crossbeam 3 and longitudinal beam 2 provide some protection for the pipe 7 from the outside. The pipe 7 is fixed by the upper fixing bracket 5 and the lower fixing bracket 6. The upper fixing bracket 5 and the lower fixing bracket 6 have the same structure, both using a sleeve to hold the pipe 7. The specific structure can use existing solutions such as pipe clamps, or a self-made sleeve can be used to hold the pipe 7, thereby improving the stability of the pipe 7. Multiple lower fixing brackets 6 are provided on the longitudinal beams 2 on both the left and right sides to firmly fix the longitudinally extending pipe 7 and prevent it from swaying due to external forces, which could lead to instability at the pipe joint.

[0027] The combustible gas sensor 8 of the leak detection module and the control circuit box 9 are basically the same as the structure of the conventional handheld leak detector, and in the embodiment, the combustible gas sensor 8 is distributedly arranged, as shown in Figure 2 and Figure 5 A plurality of combustible gas sensors 8 are arranged at different positions of the cross beam 3 and the longitudinal beam 2 at intervals, but based on the cost consideration, the weighted centralized arrangement is also carried out on the basis of the distributed arrangement, with the key area as the center. As shown in the figure, the combustible gas sensor 8 on the cross beam 3 can be arranged on the cross beam 3, and the combustible gas sensor 8 on the longitudinal beam 2 is arranged on the lower fixed frame 6, which is convenient for being close to the pipeline 7. The combustible gas sensor 8 is connected with the control circuit box 9 through a line, the control circuit box 9 can be connected with a plurality of combustible gas sensors 8 at the same time, the electrical signal of the combustible gas sensor 8 is transmitted to the control circuit box 9, and the control circuit in the control circuit box 9 receives the electrical signal to alarm and remind the residents. A 4G terminal can also be installed in the control circuit box 9, and the alarm signal is transmitted to the designated maintenance department.

[0028] Embodiment two.

[0029] The embodiment provides an anti-theft mechanism 11 on the basis of the first embodiment.

[0030] The embodiment aims to provide a long-term and less maintenance technical solution, and there is a risk of loss due to long-term unattended, so the combustible gas sensor 8 is arranged in the anti-theft mechanism 11.

[0031] As Figures 6-9As shown, in the present embodiment, the anti-theft mechanism 11 is divided into A configuration 12 and B configuration 13, which are not essentially different in structure. The base I 14 of the A configuration 12 is directly fixed on the crossbeam 3, the combustible gas sensor 8 is installed on the base I 14 of the A configuration 12, and the anti-theft box I 15 is fixed on the base I 14 by anti-theft screws. The through hole 18 provided on the anti-theft box I 15 allows the combustible gas sensor 8 to work normally, and the through hole 18 is closely matched with the combustible gas sensor 8. If the combustible gas sensor 8 is to be taken out, the anti-theft box I 15 must be damaged. The base II 16 and the anti-theft box II 17 of the B configuration 13 are arranged on the lower fixing frame 6, so the base II 16 and the anti-theft box II 17 are both in the form of a ring to facilitate the pipeline 7 to pass through. The base II 16 is fixed on the lower fixing frame 6, and the anti-theft box II 17 is also fixed on the base II 16 by anti-theft screws. As shown, due to the need to be installed on the fixed base II 16, the lower fixing frame 6 can be appropriately increased in size to provide sufficient space for installing the anti-theft mechanism 11. For example, the thickness of the pipe clamp can be increased, that is, the difference between the inner diameter and the outer diameter; as for how the base II 16 and the anti-theft box II 17 of the B configuration 13 are fitted on the gas pipeline 7, reference can be made to the existing solutions, for example, the base II 16 and the anti-theft box II 17 are designed in the form of a combination of two half rings, which can be combined together by threaded connections during installation.

[0032] In order to reduce the size and weight of the anti-theft mechanism 11 and increase the capture probability of the combustible gas sensor 8, the height of the anti-theft box of the A configuration 12 and the B configuration 13 is less than the height of the combustible gas sensor 8, that is, when the anti-theft box is installed on the base, the combustible gas sensor 8 extends out of the through hole 18 and is exposed outside. In order not to reduce the anti-theft effect, a protruding part 19 is arranged at the through hole 18. The protruding part 19 does not need to be closely matched with the combustible gas sensor 8, and the height of the protruding part 19 can be higher or lower than the height of the combustible gas sensor 8. Regardless of which case, an anti-theft grille can be installed at the through hole 18, for example, if the height of the protruding part 19 is lower than the height of the combustible gas sensor 8, the combustible gas sensor 8 extends out of the through hole 18 and is exposed outside. At this time, a dome-shaped anti-theft grille can be used to cover the head of the combustible gas sensor 8. As long as the anti-theft grille has sufficient material hardness and structural hardness, even if the mesh size of the anti-theft grille is large, the sensor 8 cannot be directly taken out, and the contact area between the combustible gas sensor 8 and the air can be increased.

[0033] In the present embodiment, the protruding part 19 can be integrally formed with the anti-theft box body, or can be designed in a split type and assembled on the anti-theft box. When using a split design, the protruding part 19 adopts a pyramid structure for convenient holding and easy installation. When using an integral forming design, the smooth surface of the conical structure is not convenient to hold, which increases the anti-theft effect.

Claims

1. A fixed leak detection device for gas pipelines, characterized in that, Including fixed module and leak detection module, the fixed module includes fixed base, longitudinal beam, cross beam, upper fixed frame, lower fixed frame, wherein: The fixed base is fixed to the ground, and the number is two groups, which are arranged on both sides of the channel formed by the pipeline; The longitudinal beam and the cross beam form a frame structure, and the gas pipeline forming the channel is enclosed inside, the longitudinal beam bottom is provided with a supporting leg and is inserted into the fixed base through the supporting leg, and the lower fixed frame is arranged on the longitudinal beam; the upper fixed frame is fixed on the cross beam; The upper fixed frame and the lower fixed frame are both support frame structures for clamping the gas pipeline to provide support for the gas pipeline; The leak detection module includes a combustible gas sensor and a control circuit box, the combustible gas sensor is provided on the cross beam and the longitudinal beam, the control circuit box is connected with the combustible gas sensor through a line, when the combustible gas sensor detects the combustible gas leakage, the electric signal is fed back to the control circuit box, and the alarm in the control circuit box buzzes.

2. A fixed leak detection apparatus for gas pipes as claimed in claim 1, characterized in that, The fixed base is half-buried in the ground and fixed by using ground nails.

3. A fixed leak detection apparatus for gas pipes as claimed in claim 2, characterised in that, The fixed base is arranged below the gas pipeline, and a groove is formed on the top of the fixed base to accommodate the gas pipeline.

4. A fixed leak detection apparatus for gas pipes as claimed in claim 1, characterized in that, The leak detection module further includes an anti-theft mechanism, the anti-theft mechanism includes A configuration and B configuration; A configuration and B configuration both include base and anti-theft box, the difference is that the base I and the anti-theft box I of B configuration are provided with a through hole for the gas pipeline to pass through, and the base II and the anti-theft box II of A configuration are fixed on the bottom of the cross beam, the base I of B configuration is fixed on the lower fixed frame; The combustible gas sensor is installed on the base, the anti-theft box is fixed on the base by using anti-theft screws, the anti-theft box is provided with a through hole for the combustible gas sensor to work, and the line between the combustible gas sensor and the control circuit box passes through the anti-theft mechanism.

5. A fixed leak detection apparatus for gas pipes as claimed in claim 4, characterised in that, The height of the anti-theft box is less than the height of the combustible gas sensor, the anti-theft box is provided with a convex part for accommodating the combustible gas sensor, the through hole is formed on the convex part, and the anti-theft grid is arranged in the through hole.

6. A fixed leak detection apparatus for gas pipes as claimed in claim 4 or 5, characterised in that, The convex part is a pyramid structure.

7. A fixed leak detection apparatus for gas pipes as claimed in claim 4 or 5, characterised in that, The convex part is a conical structure.

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