Detection device for leakage of natural gas conveying pipeline

Abstract

The utility model relates to the technical field of pipeline leakage detection, and discloses a natural gas conveying pipeline leakage detection device which comprises a lower lantern ring, the left side of the lower lantern ring is fixedly connected with a connecting seat, the top of the connecting seat is provided with a clamping groove, the inner side of the lower lantern ring is fixedly connected with a lower sealing ring, and the lower sealing ring is provided with a clamping groove. A movable groove is formed in each connecting seat, a sliding plate is arranged in each connecting seat, the sliding plates are slidably connected to the interiors of the movable grooves, springs are fixedly connected to the inner sides of the sliding plates, the ends, away from the sliding plates, of the springs are fixedly connected to the inner sides of the movable grooves, and driving assemblies are fixedly connected to the bottoms of the sliding plates. According to the utility model, through the arrangement of the clamping rods, the upper lantern ring and the lower lantern ring are more convenient and quicker to disassemble and assemble, and through the arrangement of the detector, whether gas leakage occurs in the gas pipeline is judged, thereby being beneficial to improving the detection accuracy and sensitivity of the detection device.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline leakage detection, in particular to a detection device for leakage of a natural gas transmission pipeline. Background Art

[0002] A natural gas pipeline refers to a pipeline that transports natural gas (including associated gas produced in oil fields) from the production site or processing plant to urban gas distribution centers or industrial enterprise users, also known as a gas transmission pipeline.

[0003] A Chinese patent with the search announcement number CN220269164U discloses a high-tech factory gas pipeline leakage detection device, including a factory pipeline, an upper detection cover and a lower detection cover are arranged on the outside of the factory pipeline, and both the upper detection cover and the lower detection cover are arranged in an arc-shaped structure, and an upper connection block and a lower connection block are fixedly installed on both sides of the upper detection cover and the lower detection cover, respectively, and a sealing component is arranged between the upper connection block and the lower connection block. Although the patented technology can detect the leakage point and position of the factory pipeline, the change is obvious, and the leaked gas has no color and smell, which is not easy to be found, and at the same time causes damage to the physical and mental health of the staff, when the equipment needs to be disassembled for replacement or maintenance, multiple sets of bolts need to be removed one by one, which is time-consuming and laborious to disassemble, and it is also time-consuming and laborious to reinstall. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a detection device for natural gas pipeline leakage, aiming to improve the problem that the prior art detection device is not easy to disassemble. When the detection device is damaged, the disassembly process is cumbersome, time-consuming and labor-intensive, which greatly reduces the practicability of the detection device.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a detection device for natural gas pipeline leakage, comprising a lower sleeve, a connecting seat is fixedly connected to the left side of the lower sleeve, a card slot is provided on the top of the connecting seat, a lower sealing ring is fixedly connected to the inner side of the lower sleeve, a movable groove is provided inside the connecting seat, a slide is arranged inside the connecting seat, the slide is slidably connected to the inside of the movable groove, a spring is fixedly connected to the inner side of the slide, one end of the spring away from the slide is fixedly connected to the inner side of the movable groove, and a driving assembly is fixedly connected to the bottom of the slide.

[0006] Furthermore, the driving assembly includes a push rod, which is fixedly connected to the bottom of the slide, and limiting grooves are provided on both sides of the bottom of the connecting seat. The push rod is slidably connected inside the limiting grooves, and the outer side of the slide is fixedly connected with a clamping rod, and sliding grooves are provided on both sides of the inside of the connecting seat.

[0007] Furthermore, the clamping rod is slidably connected to the inside of the sliding groove, and one end of the clamping rod away from the sliding plate is arranged inside the through hole.

[0008] Furthermore, the clamping slots are all communicated with the sliding slots, the sliding slots are all communicated with the movable slots, and the movable slots are all communicated with the limiting slots.

[0009] Furthermore, the right side of the lower ring is rotatably connected to a hinge, and the top of the hinge is rotatably connected to an upper ring.

[0010] Furthermore, a connecting plate is fixedly connected to the left side of the upper collar, clamping blocks are fixedly connected to both sides of the bottom of the connecting plate, a through hole is provided inside the clamping block, and an upper sealing ring is fixedly connected to the inner side of the upper collar.

[0011] Furthermore, a detector is provided on the top of the upper ring, and a detection probe is fixedly connected to the bottom of the detector.

[0012] Furthermore, a fixing tube is fixedly connected to the bottom of the detector, a fixing thread is opened on the outside of the fixing tube, a fixing nut is connected to the external thread of the fixing tube, reinforcement plates are fixedly connected to both sides of the fixing tube, and the outside of the fixing tube is slidably connected to the inside of the upper ring.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, the two sets of rings can be disassembled and installed more conveniently and quickly through the cooperation between the connecting plate, the connecting seat, the clamping block, the clamping slot, the through hole, the sliding slot, the clamping rod, the sliding plate, the spring, the movable slot, the push rod, the limiting slot and other structures.

[0015] 2. In the utility model, by coordinating the upper collar, the lower collar, the upper sealing ring, the lower sealing ring, the detector, the fixed tube, the reinforcing plate, the fixed thread, the fixed nut, the detection probe and other structures, it is possible to determine whether there is a gas leak in the gas pipeline, which is beneficial to improving the accuracy and sensitivity of the detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of a detection device for natural gas pipeline leakage proposed by the utility model;

[0017] Figure 2 This is a bottom view of a detection device for natural gas transmission pipeline leakage proposed by the utility model;

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4The utility model is a partial structural schematic diagram of a detection device for natural gas pipeline leakage.

[0020] Legend:

[0021] 1. Upper collar; 2. Lower collar; 3. Upper sealing ring; 4. Hinge; 5. Lower sealing ring; 6. Connecting plate; 7. Connecting seat; 8. Block; 9. Slot; 10. Through hole; 11. Slide; 12. Lever; 13. Slide plate; 14. Spring; 15. Movable slot; 16. Push rod; 17. Limiting slot; 18. Detector; 19. Fixed tube; 20. Reinforcement plate; 21. Fixed thread; 22. Fixed nut; 23. Detection probe. DETAILED DESCRIPTION

[0022] 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 in 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.

[0023] Reference Figure 1 , Figure 2 and Figure 4 , the utility model provides an embodiment: a detection device for leakage of a natural gas transmission pipeline, comprising a lower sleeve 2, a connecting seat 7 is fixedly connected to the left side of the lower sleeve 2, a card slot 9 is provided on the top of the connecting seat 7, a lower sealing ring 5 is fixedly connected to the inner side of the lower sleeve 2, a movable slot 15 is provided inside the connecting seat 7, a slide plate 13 is arranged inside the connecting seat 7, the slide plate 13 is slidably connected to the inside of the movable slot 15, a spring 14 is fixedly connected to the inner side of the slide plate 13, one end of the spring 14 away from the slide plate 13 is fixedly connected to the inner side of the movable slot 15, a driving assembly is fixedly connected to the bottom of the slide plate 13, the driving assembly comprises a push rod 16, the push rod 16 is fixedly connected to the bottom of the slide plate 13, limiting slots 17 are provided on both sides of the bottom of the connecting seat 7, the push rod 16 is slidably connected to the inside of the limiting slot 17, the outer side of the slide plate 13 is fixedly connected to the clamping rod 12, and the inner side of the connecting seat 7 is provided with a slide slot 11.

[0024] By pushing and squeezing the two push rods 16, the two push rods 16 drive the slide plate 13 to slide inside the movable groove 15, and the slide plate 13 drives the clamping rod 12 to move toward each other, and the clamping rod 12 is separated from the inside of the clamping groove 9, so that the clamping block 8 enters the inside of the clamping groove 9, and the push rod 16 is released. Through the elasticity of the spring 14, the clamping rod 12 is reset and the clamping rod 12 is clamped in the inside of the through hole 10.

[0025] Reference Figure 1 and Figure 4 The clamping rod 12 is slidably connected to the inside of the slide groove 11, and the end of the clamping rod 12 away from the slide plate 13 is arranged inside the through hole 10. The clamping grooves 9 are communicated with the slide grooves 11, and the slide grooves 11 are communicated with the movable grooves 15. The movable grooves 15 are communicated with the limit grooves 17. The right side of the lower ring 2 is rotatably connected to the hinge 4, and the top of the hinge 4 is rotatably connected to the upper ring 1.

[0026] The clamping rod 12 slides in the slide groove 11 , and the sliding of the clamping rod 12 makes the outer end engage in the inside of the through hole 10 , thereby fixing the clamping block 8 in the clamping groove 9 , and the lower sleeve ring 2 is connected to the upper sleeve ring 1 through the hinge 4 .

[0027] Reference Figure 1 , Figure 3 and Figure 4 A connecting plate 6 is fixedly connected to the left side of the upper collar 1, and blocks 8 are fixedly connected to both sides of the bottom of the connecting plate 6. A through hole 10 is provided inside the block 8. An upper sealing ring 3 is fixedly connected to the inner side of the upper collar 1. A detector 18 is provided on the top of the upper collar 1, and a detection probe 23 is fixedly connected to the bottom of the detector 18. A fixed tube 19 is fixedly connected to the bottom of the detector 18, and a fixing thread 21 is provided on the outside of the fixed tube 19. A fixing nut 22 is threadedly connected to the outside of the fixed tube 19, and reinforcement plates 20 are fixedly connected to both sides of the fixed tube 19. The outside of the fixed tube 19 is slidably connected to the inside of the upper collar 1.

[0028] The upper ring 1 and the lower ring 2 are engaged with the inside of the slot 9 through the block 8, the through hole 10 is used to engage the clamping rod 12, the upper sealing ring 3 is fitted with the lower sealing ring 5, and thus fits with the outside of the pipeline to achieve sealing, the detector 18 detects whether there is a gas leakage through the detection probe 23, the fixed tube 19 is used to fix the detector 18, the fixing nut 22 is threadedly connected to the fixing thread 21 of the fixed tube 19, thereby fixing the fixed tube 19 and the detector 18, and the reinforcement plate 20 is used to reinforce the fixed tube 19.

[0029] Working principle: When using the device, the upper ring 1 and the lower ring 2 are separated, and the lower ring 2 is placed at the pipe flange connection so that the outside of the pipe fits with the lower sealing ring 5, and the upper ring 1 and the lower ring 2 are closed. By pressing the push rod 16 to move toward the middle, the push rod 16 drives the slide plate 13 to compress the spring 14 inward, and the slide plate 13 drives the clamping rod 12 to move inward, so that the clamping block 8 is engaged in the inside of the clamping groove 9, and the push rod 16 is released. Through the force of the spring 14, the clamping rod 12 is engaged in the inside of the through hole 10, so that the upper ring 1 and the lower ring 2 are closed. During the detection, the first thing that changes is the detection probe 23. The detection probe 23 will detect the air pressure change inside the ring and display it through the detector. Detection by air pressure is more accurate, which can not only correctly judge whether there is gas leakage in the gas pipeline, but also reduce the workload of the staff.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for detecting leakage of a natural gas transmission pipeline, comprising a lower collar (2), characterized in that: The left side of the lower sleeve ring (2) is fixedly connected to a connecting seat (7), a slot (9) is provided on the top of the connecting seat (7), a lower sealing ring (5) is fixedly connected to the inner side of the lower sleeve ring (2), a movable slot (15) is provided inside the connecting seat (7), a slide plate (13) is provided inside the connecting seat (7), the slide plate (13) is slidably connected inside the movable slot (15), a spring (14) is fixedly connected to the inner side of the slide plate (13), one end of the spring (14) away from the slide plate (13) is fixedly connected to the inner side of the movable slot (15), and a driving component is fixedly connected to the bottom of the slide plate (13).

2. A detection device for natural gas pipeline leakage according to claim 1, characterized in that: The driving assembly comprises a push rod (16), and the push rod (16) is fixedly connected to the bottom of the slide plate (13). Limiting grooves (17) are provided on both sides of the bottom of the connecting seat (7). The push rod (16) is slidably connected inside the limiting groove (17). The outer side of the slide plate (13) is fixedly connected with a clamping rod (12), and sliding grooves (11) are provided on both sides of the inside of the connecting seat (7).

3. A detection device for natural gas pipeline leakage according to claim 2, characterized in that: The clamping rod (12) is slidably connected inside the sliding groove (11), and the end of the clamping rod (12) away from the sliding plate (13) is arranged inside the through hole (10).

4. The device for detecting leakage of a natural gas transmission pipeline according to claim 1, characterized in that: The clamping grooves (9) are all in communication with the sliding grooves (11), the sliding grooves (11) are all in communication with the movable grooves (15), and the movable grooves (15) are all in communication with the limiting grooves (17).

5. The device for detecting leakage of a natural gas transmission pipeline according to claim 1, characterized in that: The right side of the lower sleeve ring (2) is rotatably connected to a hinge (4), and the top of the hinge (4) is rotatably connected to an upper sleeve ring (1).

6. A detection device for natural gas pipeline leakage according to claim 5, characterized in that: A connecting plate (6) is fixedly connected to the left side of the upper sleeve ring (1), and clamping blocks (8) are fixedly connected to both sides of the bottom of the connecting plate (6). A through hole (10) is provided inside the clamping block (8), and an upper sealing ring (3) is fixedly connected to the inner side of the upper sleeve ring (1).

7. A detection device for natural gas pipeline leakage according to claim 5, characterized in that: A detector (18) is arranged on the top of the upper collar (1), and a detection probe (23) is fixedly connected to the bottom of the detector (18).

8. A detection device for natural gas pipeline leakage according to claim 7, characterized in that: The bottom of the detector (18) is fixedly connected to a fixing tube (19), the outside of the fixing tube (19) is provided with a fixing thread (21), the external thread of the fixing tube (19) is connected to a fixing nut (22), both sides of the fixing tube (19) are fixedly connected to a reinforcing plate (20), and the outside of the fixing tube (19) is slidably connected to the inside of the upper ring (1).

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