A safety monitoring device for natural gas pipeline maintenance

Abstract

This utility model discloses a safety monitoring device for natural gas pipeline maintenance. By incorporating a quick-release mechanism between the monitor and the natural gas pipeline, and linking this mechanism with a clamping mechanism on the outside of the cable port, the device can be fixed and the cable clamped in an integrated manner during installation or removal. When the monitor is inserted, the quick-release mechanism locks the pipeline connection while simultaneously driving the clamping mechanism to automatically clamp the cable, preventing potential hazards such as cable pulling or loosening due to inadequate securing. Conversely, when the monitor is removed from the pipeline, the clamping mechanism releases the cable simultaneously, reducing the complexity of maintenance operations and improving on-site work efficiency. Furthermore, the quick-release mechanism automatically closes the pipeline interface after the monitor is removed, effectively preventing natural gas leakage and providing enhanced safety for pipeline maintenance sites.

Description

Technical Field

[0001] This utility model belongs to the field of natural gas pipeline maintenance, specifically, it relates to a safety monitoring device for natural gas pipeline maintenance sites. Background Technology

[0002] Natural gas, as one of the most readily utilized clean energy sources, has its transmission and distribution systems covering urban and industrial areas. To ensure stable natural gas transmission, accurate pressure parameters, and controllable leakage risks, on-site monitoring equipment is typically installed at key points during pipeline operation. This equipment collects real-time data on internal gas pressure, flow rate, and environmental parameters, providing maintenance data for operators. However, in actual operation, monitoring equipment is often installed outdoors or in confined underground areas, creating complex operating environments with inherent flammability and explosive risks. Therefore, higher demands are placed on the structural reliability, ease of installation, and sealing safety of the monitoring equipment.

[0003] Existing monitoring equipment generally uses threaded or flanged connections to connect to natural gas pipelines. While these connections offer a certain level of strength, disassembly and assembly typically require tools, making the process cumbersome and time-consuming. In the event of an on-site equipment failure requiring urgent replacement, the lengthy disassembly process slows down repair efficiency and hinders emergency safety management. Furthermore, if the connection interfaces are not sealed immediately after disassembly, natural gas leaks can easily occur, leading to resource waste and potential safety accidents. Therefore, achieving automatic sealing of interfaces during disassembly is a pressing issue in structural design.

[0004] Furthermore, existing monitoring devices rely heavily on manual arrangement and individual fasteners for cable laying during installation. When equipment is moved or disassembled, cables often become loose, tangled, or damaged by tension, affecting the reliable transmission of electrical signals or power. Especially when working underground or in confined spaces, workers often need to simultaneously secure the equipment and manage the cables, which is not only complex but also carries the risk of accidental contact or cable breakage, causing inconvenience for maintenance.

[0005] In view of this, this utility model is proposed. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a safety monitoring device for on-site maintenance of natural gas pipelines, which solves the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0008] A safety monitoring device for natural gas pipeline maintenance includes: a monitor body, an air inlet connected to the natural gas pipeline at the bottom of the monitor body, an air inlet pipe connected below the air inlet, and a cable port for signal or power input at the side of the monitor body.

[0009] One end of the air intake pipe is fitted with a quick-release mechanism that connects to the natural gas pipeline. When the monitor body is removed from the natural gas pipeline, it automatically closes to prevent natural gas leakage.

[0010] A clamping mechanism is provided on the outside of the cable port. The clamping mechanism and the quick-release mechanism form a linkage transmission relationship. When the monitor body is installed in place and connected to the quick-release mechanism, the clamping mechanism automatically clamps and fixes the cable under the driving action.

[0011] Optionally, the quick-release mechanism includes a tube body with several grooves on its periphery, and a ball for radial positioning is slidably connected in the grooves; an annular groove for the ball to be embedded is provided on the periphery of the air intake pipe for quick locking; a slide cylinder (25) is slidably connected to the outer wall of the upper end of the tube body; a retaining ring is fixedly connected to the periphery of the tube body, and a first spring for driving the slide cylinder (25) back to its original position is provided between the retaining ring and the annular groove.

[0012] Optionally, the upper end of the slide tube (25) is provided with a gap for the release of the ball. The gap is provided with a push ramp with an inclined structure. During the insertion or removal of the monitor body, the ramp applies a sliding guide effect to the ball, so that the ball automatically enters the annular groove.

[0013] A ring is fixedly connected to the inner wall of the tube, and a connecting cylinder is slidably fitted to the inner wall of the tube. Several through holes are opened on the opposite side of the connecting cylinder. A conical plug is fixedly connected above the connecting cylinder to seal the opening of the ring. One end of the air inlet pipe is connected to a connecting pipe. A push rod is installed inside the connecting pipe, and several connecting plates are connected between the push rod and the inner wall of the connecting pipe.

[0014] Optionally, the clamping mechanism includes a rotating disk, a guide frame, and a slide rod. The guide frame is installed inside the cable opening and slides in cooperation with the slide rod. The slide rod is threadedly engaged with the rotating disk and fits against the outer wall of the cable for automatic radial clamping.

[0015] Optionally, a connecting ring is elastically fitted around the intake pipe, a connecting plate is fixed around the connecting ring, and a rack is fixedly connected above the connecting plate; several gear teeth that mesh with the rack are provided around the rotating disk, and the rack is driven by the axial displacement generated by the insertion and removal action of the monitor body, so that the rotating disk can achieve angular displacement rotation, thereby driving the slide rod to move to form a clamping linkage.

[0016] Optionally, a first planar thread is provided on one side of the rotating disk, and a second planar thread is provided at the corresponding position of the slide rod. Through the frictional meshing of the planar threads, the small amount of rotation is converted into a larger clamping displacement, making the cable more securely fixed.

[0017] Optionally, friction texture is provided on the outer wall of the slide (25), and several mounting plates are fixedly connected to one side of the monitor body, with through holes opened on the opposite side of the mounting plates.

[0018] Optionally, a positioning ring is fixedly connected to the top of the intake pipe, a second spring is connected between the positioning ring and the connecting ring, a positioning block is fixedly connected to one side of the connecting ring, and a guide groove for the positioning block to slide is provided on one side of the pipe body.

[0019] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0020] This invention features a quick-release mechanism between the monitor and the natural gas pipeline, which is linked to a clamping mechanism on the outside of the cable opening. This allows for integrated installation and removal of the monitor, enabling both device fixation and cable clamping. When the monitor is inserted, the quick-release mechanism locks the pipeline connection while simultaneously clamping the cable, preventing potential issues like cable pulling or loosening due to inadequate fixation. Conversely, when the monitor is removed from the pipeline, the clamping mechanism releases the cable, reducing maintenance complexity and improving on-site efficiency. Furthermore, the quick-release mechanism automatically closes the pipeline interface after monitor removal, effectively preventing natural gas leaks and providing enhanced safety during pipeline maintenance.

[0021] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0022] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0023] Figure 1 This is a three-dimensional structural diagram of the front of the monitoring device;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the back of the monitoring device;

[0025] Figure 3 This is a schematic diagram of the internal three-dimensional structure of the monitoring device;

[0026] Figure 4 for Figure 1Schematic diagram of the structure at point A in the middle;

[0027] Figure 5 for Figure 1 Schematic diagram of the structure at point B;

[0028] Figure 6 This is a schematic diagram of the three-dimensional structure of the connecting cylinder.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1. Monitor body; 2. Air inlet pipe; 3. Cable port; 4. Pipe body; 5. Ball; 6. Annular groove; 7. Retaining ring; 8. First spring; 9. Ramp; 10. Ring body; 11. Connecting cylinder; 12. Conical plug; 13. Connecting pipe; 14. Push rod; 15. Rotating disk; 16. Guide frame; 17. Slide rod; 18. Connecting ring; 19. Connecting plate; 20. Rack; 21. Mounting plate; 22. Positioning ring; 23. Second spring; 24. Guide groove.

[0031] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings.

[0033] Please see Figure 1-6 As shown, this embodiment provides a safety monitoring device for on-site maintenance of natural gas pipelines, including a monitor body 1. The bottom of the monitor body 1 is provided with an air inlet that communicates with the natural gas pipeline, and an air inlet pipe 2 is connected below the air inlet. The side of the monitor body 1 is provided with a cable port 3 for signal or power input.

[0034] One end of the air inlet pipe 2 is fitted with a quick-release mechanism that connects to the natural gas pipeline. When the monitor body 1 is removed from the natural gas pipeline, it automatically closes to prevent natural gas leakage.

[0035] A clamping mechanism is provided on the outside of the cable port 3. The clamping mechanism and the quick-release mechanism form a linkage transmission relationship. When the monitor body 1 is installed in place and connected to the quick-release mechanism, the clamping mechanism automatically clamps and fixes the cable under the driving action.

[0036] In this embodiment, the quick-release mechanism includes a tube body 4 with several grooves on its circumference. A ball 5 for radial limiting is slidably connected within each groove. An annular groove 6 is provided on the circumference of the air intake pipe 2, allowing the ball 5 to be inserted for quick locking. A slide cylinder 25 is slidably connected to the upper outer wall of the tube body 4. A retaining ring 7 is fixedly connected to the circumference of the tube body 4, and a first spring 8 is provided between the retaining ring 7 and the annular groove 6 to drive the slide cylinder 25 back to its original position. By providing the retaining ring 7 on the circumference of the tube body 4, an effective structural limit is formed on the sliding stroke of the slide cylinder 25, preventing excessive upward sliding or disengagement of the slide cylinder 25 under stress. The retaining ring 7 provides a reliable stopping surface at the end of the slide cylinder 25's movement, ensuring that the slide cylinder 25 always operates within a controllable range during insertion and removal, thereby preventing the slide cylinder 25 from overstepping its designated position.

[0037] In this embodiment, the upper end of the slide cylinder 25 has a gap for the release of the ball 5. An inclined ramp 9 is provided at this gap. During the insertion or removal of the monitor body 1, the ramp 9 applies a sliding guide to the ball 5, causing it to automatically enter the annular groove 6. The ramp 9 at the upper end of the slide cylinder 25 facilitates guiding the ball 5 into or out of the limiting groove, making the locking action smoother and preventing component jamming. Simultaneously, it allows for quick insertion and removal without additional force, improving installation efficiency and making it suitable for frequent disassembly and maintenance.

[0038] A ring 10 is fixedly connected to the inner wall of the pipe body 4, and a connecting cylinder 11 is slidably fitted onto the inner wall of the pipe body 4. Several through holes are opened on opposite sides of the connecting cylinder 11. A conical plug 12 is fixedly connected above the connecting cylinder 11 to seal the opening of the ring 10. One end of the air inlet pipe 2 is connected to a connecting pipe 13. A push rod 14 is installed inside the connecting pipe 13, and several connecting plates 19 are connected between the push rod 14 and the inner wall of the connecting pipe 13. The combination structure of the ring 10, connecting cylinder 11, and conical plug 12 inside the pipe body 4 allows the internal ventilation channel to automatically seal and open according to the installation state. In the disconnected state, the gas source is blocked by the conical plug 12, which can effectively prevent residual natural gas from leaking out along the interface, improving the sealing reliability and safety performance of the entire quick-release mechanism.

[0039] It should be noted that when the intake pipe 2 is separated from the pipe body 4, the push rod 14 will no longer exert an outward pushing force on the conical plug 12 due to the disengagement of the connection. At this time, under the elastic restoring force of the first spring 8, the conical plug 12 will automatically fall back along the guide direction and fit tightly against the opening position of the ring body 10. Through the tight sealing cooperation between the conical structure and the inner wall of the interface, the natural gas passage can be sealed instantly, effectively preventing the leakage of internal gas.

[0040] In this embodiment, the clamping mechanism includes a rotating disk 15, a guide frame 16, and a slide rod 17. The guide frame 16 is installed inside the cable port 3 and slides in cooperation with the slide rod 17. The slide rod 17 is threadedly engaged with the rotating disk 15 and fits against the outer wall of the cable for automatic radial clamping. The clamping mechanism uses a threaded drive structure between the rotating disk 15 and the slide rod 17, enabling automatic clamping of the cable when the monitor is in place, without the need for manual adjustment. This structure can accommodate cables of different diameters and ensures stable fixation through a sliding contact method.

[0041] In this embodiment, a connecting ring 18 is elastically fitted around the circumference of the air intake pipe, and a connecting plate 19 is fixed around the connecting ring 18. A rack 20 is fixedly connected above the connecting plate 19. Several gear teeth are arranged around the circumference of the rotating disk 15 to mesh with the rack 20. The axial displacement generated by the insertion and removal action of the monitor body 1 drives the rack 20, causing the rotating disk 15 to rotate by angular displacement, thereby driving the slide rod 17 to move and form a clamping linkage. By meshing the rack 20 on the connecting ring 18 with the gear teeth of the rotating disk 15, the axial motion generated by the insertion and removal of the monitor is converted into rotational driving force, enabling the clamping mechanism to achieve linkage operation.

[0042] In this embodiment, the rotating disk 15 has a first planar thread on one side, and the slide rod 17 has a second planar thread at the corresponding position. Through the frictional engagement of the planar threads, a small amount of rotation is converted into a larger clamping displacement, making the cable more securely fixed. The rotating disk 15 and the slide rod 17 use a planar thread structure to amplify small-angle rotation into a larger displacement, which can generate higher clamping pressure and make the cable less prone to loosening. This method has a simple structure, reliable force transmission, and maintains a stable fixing effect even under continuous vibration or frequent maintenance scenarios.

[0043] In this embodiment, the outer wall of the slide cylinder 25 is provided with friction texture. Several mounting plates 21 are fixedly connected to one side of the monitor body 1, and through holes are opened on the opposite sides of the mounting plates 21. The friction texture design on the outer wall of the slide cylinder 25 makes it easier for the operator to grip the slide cylinder 25 for auxiliary control, improving operating comfort and anti-slip ability. The mounting plates 21 can install the monitoring device on the wall by screws or other fasteners.

[0044] In this embodiment, a positioning ring 22 is fixedly connected above the air intake pipe 2, a second spring 23 is connected between the positioning ring 22 and the connecting ring 18, a positioning block is fixedly connected to one side of the connecting ring 18, and a guide groove 24 for the positioning block to slide is provided on one side of the pipe body 4.

[0045] Furthermore: when the intake pipe 2 is inserted into the designated position within the pipe body 4, the pipe body 4 contacts the positioning ring 22 and applies an upward thrust to it, causing the positioning ring 22 to move axially upward. During the upward movement of the positioning ring 22, the second spring 23 is compressed, generating elastic deformation, thus providing elastic energy for subsequent reset. As the positioning ring 22 synchronously drives the rack 20 to move upward, the rack 20 moves relative to the meshing gear, causing the gear to rotate. The rotational motion of the gear is then transmitted to the rotating disk 15 via the transmission structure, thereby driving the rotating disk 15 to rotate and achieving synchronous adjustment of the slide rod 17.

[0046] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A safety monitoring device for on-site maintenance of natural gas pipelines, characterized in that, include: The monitor body (1) has an air inlet at the bottom that is connected to a natural gas pipeline, and an air inlet pipe (2) is connected below the air inlet. The monitor body (1) has a cable port (3) for signal or power input on the side. One end of the air inlet pipe (2) is fitted with a quick-release mechanism that connects to the natural gas pipeline. When the monitor body (1) is removed from the natural gas pipeline, it automatically closes to seal off the natural gas leak. A clamping mechanism is provided on the outside of the cable port (3). The clamping mechanism and the quick-release mechanism form a linkage transmission relationship. When the monitor body (1) is installed in place and connected to the quick-release mechanism, the clamping mechanism automatically clamps and fixes the cable under the driving action.

2. The on-site safety monitoring device for natural gas pipeline maintenance according to claim 1, characterized in that, The quick-release mechanism includes a tube body (4), with several grooves on the periphery of the tube body (4), and a ball (5) for radial limiting is slidably connected in the grooves; an annular groove (6) is provided on the periphery of the air intake pipe (2) for the ball (5) to be embedded, for quick locking; a slide cylinder (25) is slidably connected to the outer wall of the upper end of the tube body (4), and a retaining ring (7) is fixedly connected on the periphery of the tube body (4), and a first spring (8) is provided between the retaining ring (7) and the annular groove (6) for driving the slide cylinder (25) to return to its original position.

3. The on-site safety monitoring device for natural gas pipeline maintenance according to claim 2, characterized in that, The upper end of the slide tube (25) is provided with a gap for the release of the ball (5). A push ramp (9) with an inclined structure is provided at the gap. During the insertion or removal of the monitor body (1), the ramp (9) applies a sliding guide to the ball (5), so that the ball (5) automatically enters the annular groove (6).

4. The on-site safety monitoring device for natural gas pipeline maintenance according to claim 3, characterized in that, A ring (10) is fixedly connected to the inner wall of the tube (4). A connecting cylinder (11) is slidably fitted to the inner wall of the tube (4). Several through holes are opened on the opposite side of the connecting cylinder (11). A conical plug (12) is fixedly connected above the connecting cylinder (11) to seal the opening of the ring (10). One end of the air inlet pipe (2) is connected to a connecting pipe (13). A push rod (14) is installed inside the connecting pipe (13). Several connecting plates (19) are connected between the push rod (14) and the inner wall of the connecting pipe (13).

5. A natural gas pipeline maintenance site safety monitoring device according to claim 1, characterized in that, The clamping mechanism includes a rotating disk (15), a guide frame (16) and a slide rod (17). The guide frame (16) is installed inside the cable port (3) and slides in cooperation with the slide rod (17). The slide rod (17) is threadedly engaged with the rotating disk (15). The slide rod (17) fits against the outer wall of the cable and is used to automatically perform radial clamping.

6. A natural gas pipeline maintenance site safety monitoring device according to claim 5, characterized in that, The intake pipe (2) is elastically fitted with a connecting ring (18), and a connecting plate (19) is fixed around the connecting ring (18). A rack (20) is fixedly connected above the connecting plate (19). Several gear teeth that mesh with the rack (20) are arranged around the rotating disk (15). The axial displacement generated by the insertion and removal action of the monitor body (1) drives the rack (20), so that the rotating disk (15) can achieve angular displacement rotation, thereby driving the slide bar (17) to move and form a clamping linkage.

7. A natural gas pipeline maintenance site safety monitoring device according to claim 6, characterized in that, The rotating disk (15) has a first planar thread on one side, and the slide rod (17) has a second planar thread at the corresponding position. Through the frictional meshing of the planar threads, the cable is fixed more securely.

8. A natural gas pipeline maintenance site safety monitoring device according to claim 2, characterized in that, Friction texture is provided on the outer wall of the slide (25), and several mounting plates (21) are fixedly connected to one side of the monitor body (1). Through holes are provided on the opposite side of the mounting plates (21).

9. A natural gas pipeline maintenance site safety monitoring device according to claim 6, characterized in that, A positioning ring (22) is fixedly connected above the air intake pipe (2). A second spring (23) is connected between the positioning ring (22) and the connecting ring (18). A positioning block is fixedly connected to one side of the connecting ring (18). A guide groove (24) for the positioning block to slide is opened on one side of the pipe body (4).

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