Gas tightness monitoring device for natural gas conveying pipeline

Abstract

The utility model relates to the technical field of pipeline air tightness monitoring, and discloses a natural gas conveying pipeline air tightness monitoring device which comprises a conveying pipeline, a lower fixing ring is arranged on the outer wall of the conveying pipeline, an upper fixing ring is attached to the outer wall of the lower fixing ring, and a pressure sensor is fixedly connected to the inner wall of the upper fixing ring. The top of the pressure sensor is fixedly connected with a pressure gauge, pressure plates are arranged on the inner wall of the lower fixing ring and the inner wall of the upper fixing ring, and a fixing assembly is arranged on the outer wall of the lower fixing ring. According to the utility model, the problems that the installation operation is tedious, the leaked natural gas is difficult to collect and store, the resource waste, the environment pollution and the safety risk increase are caused are solved, and the purposes of quickly installing and disassembling, saving the construction and maintenance time, collecting and conveying the leaked natural gas at the same time, realizing the recycling of the gas, reducing the cost and the like are achieved. And resource waste is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline gas tightness monitoring technical field especially relates to a natural gas transmission pipeline gas tightness monitoring device. BACKGROUND

[0002] Natural gas transmission pipeline is used for long-distance, high-pressure transmission of natural gas to ensure its stable supply. However, due to the flammable and explosive nature of natural gas and the changes in the external environment during long-distance transmission, the pipeline is prone to corrosion, aging or leakage. Therefore, it is crucial to install a gas tightness monitoring device, which can monitor the internal conditions of the pipeline in real time through pressure, temperature and gas sensors and other equipment, quickly detect leaks, pressure abnormalities and other problems, ensure the safety and reliability of the gas transmission process, effectively prevent accidents and reduce maintenance costs.

[0003] The traditional natural gas transmission pipeline gas tightness monitoring device monitors the pressure changes and flow status in the pipeline in real time through pressure, temperature and flow sensors installed on the pipeline. When the pipeline leaks, the pressure abnormally drops or the temperature fluctuates, the monitoring device will capture abnormal data and send an alarm through the alarm system to prompt the staff to check and maintain. These monitoring data can be transmitted to the control center through the data acquisition and transmission system for management personnel to analyze and judge to ensure the safety and stability of natural gas transportation.

[0004] The traditional natural gas transmission pipeline gas tightness monitoring device is usually fixed on the outer wall of the pipeline by mechanical clamps or welding, which is more cumbersome to set up, reduces monitoring efficiency, and makes pipeline detection inconvenient and time-consuming. At the same time, when leakage occurs, the leaked natural gas is difficult to collect and store, not only causing resource waste, but also polluting the environment and increasing safety risks. SUMMARY

[0005] In order to make up for the above shortcomings, the utility model provides a natural gas transmission pipeline gas tightness monitoring device, which aims to improve the traditional pipeline gas tightness monitoring device installation operation is more cumbersome, reduces the monitoring efficiency, at the same time, the leaked natural gas is difficult to collect and store, which will cause resource waste, pollute the environment and increase safety risks.

[0006] To achieve the above object, the utility model provides the following technical scheme: A natural gas conveying pipeline gas tightness monitoring device, conveying pipeline is provided with lower fixed ring on the outer wall, the outer wall of lower fixed ring is pasted with upper fixed ring, the inner wall of upper fixed ring is fixedly connected with pressure sensor, the top of pressure sensor is fixedly connected with pressure gauge, the inner wall of lower fixed ring and upper fixed ring is provided with pressure plate, the outer wall of lower fixed ring is provided with fixed component, the fixed component is used for fixing lower fixed ring with upper fixed ring, the inside of upper fixed ring is provided with conveying component, and the conveying component is used for conveying leaked natural gas;

[0007] The fixed component includes a fixed half ring, the outer wall of the fixed half ring is fixedly connected to the outer wall of the lower fixed ring, one end of the fixed half ring is fixedly connected with a hinge, the outer wall of the hinge is fixedly connected with a movable half ring, the other end of the fixed half ring is rotatably connected with a bolt, the outer wall of the bolt is threadedly connected with a nut, and the inside of the nut is fixedly connected with a gasket.

[0008] Further, the conveying component includes a conveying pipeline, one end of the conveying pipeline is fixedly connected to the inside of the upper fixed ring, and the other end of the conveying pipeline is fixedly connected with a storage bin.

[0009] Further, the inside of the lower fixed ring and the upper fixed ring is slidably connected with a sealing ring, the outer wall of the sealing ring is fixedly connected with a limiting plate, the inside of the sealing ring is fixedly connected with a sliding rod, the outer wall of the sliding rod is sleeved with a spring, and the outer wall of the lower fixed ring and the upper fixed ring is fixedly connected with a sealing strip.

[0010] Further, the outer wall of the sliding rod is slidably connected to the inside of the lower fixed ring and the upper fixed ring, and the sliding rod is used for guiding the expansion and contraction of the spring.

[0011] Further, the outer wall of the movable half ring is fixedly connected to the outer wall of the upper fixed ring, and the movable half ring is used for moving the upper fixed ring together.

[0012] Further, the outer wall of the gasket and the movable half ring is pasted, and the gasket is used for increasing the friction between the nut and the movable half ring to prevent loosening.

[0013] Further, the outer wall of the storage bin is fixedly connected to the outer wall of the lower fixed ring, and the storage bin is used for storing natural gas.

[0014] Further, one end of the spring is fixedly connected to the inside of the sealing ring, and the other end of the spring is arranged in the inside of the lower fixed ring and the upper fixed ring.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, first, the lower fixing ring is placed on the outer wall of the conveying pipeline to be monitored, then the upper fixing ring is wrapped around the outer wall of the conveying pipeline by pulling the movable half ring and cooperating with the hinge, and then the stable fixing is realized by cooperating with the bolt, nut and gasket. In addition, the leaked natural gas can be conveyed to the inside of the storage bin through the conveying pipeline for storage, which solves the problem of complicated installation and operation, and the leaked natural gas is difficult to collect and store, which causes resource waste, environmental pollution and increased safety risk. The device can be quickly installed and disassembled, the construction and maintenance time is saved, the leaked natural gas can be collected and conveyed, the gas can be reused, and resource waste is reduced.

[0017] 2. In the utility model, the lower fixing ring and the upper fixing ring are sealed by the sealing strips on both sides, then the connection between the lower fixing ring, the upper fixing ring and the conveying pipeline is sealed by the sealing ring cooperating with the limiting plate, the sliding rod and the spring, which realizes efficient sealing and avoids the interference of the external environment on the monitoring data, so that the device can more accurately detect the pressure, temperature and leakage condition in the pipeline, and the accuracy and reliability of the monitoring are improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A three-dimensional structure schematic view of the natural gas conveying pipeline air tightness monitoring device is provided for the utility model;

[0019] Figure 2 A lower fixing ring one side structure schematic view of the natural gas conveying pipeline air tightness monitoring device is provided for the utility model;

[0020] Figure 3 A fixed half ring one side structure schematic view of the natural gas conveying pipeline air tightness monitoring device is provided for the utility model;

[0021] Figure 4 An upper fixing ring one side structure schematic view of the natural gas conveying pipeline air tightness monitoring device is provided for the utility model.

[0022] LEGEND:

[0023] 1. Conveying pipeline; 2. Lower fixing ring; 3. Upper fixing ring; 4. Fixed half ring; 5. Movable half ring; 6. Pressure sensor; 7. Pressure gauge; 8. Bolt; 9. Nut; 10. Gasket; 11. Conveying pipeline; 12. Storage bin; 13. Sealing strip; 14. Sliding rod; 15. Limiting plate; 16. Spring; 17. Sealing ring; 18. Hinge; 19. Pressure plate. DETAILED DESCRIPTION

[0024] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0025] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application. Figure 1 Figure 4 The present application provides an embodiment: a natural gas conveying pipeline air tightness monitoring device, comprising a conveying pipeline 1, the outer wall of the conveying pipeline 1 is provided with a lower fixing ring 2, the outer wall of the lower fixing ring 2 is attached with an upper fixing ring 3, the inner wall of the upper fixing ring 3 is fixedly connected with a pressure sensor 6, the top of the pressure sensor 6 is fixedly connected with a pressure gauge 7, the inner wall of the lower fixing ring 2 and the upper fixing ring 3 is provided with a pressure plate 19, the conveying pipeline 1 leaks natural gas and exerts pressure on the pressure plate 19, so that real-time monitoring is realized through the pressure sensor 6, and finally the display is realized through the pressure gauge 7, the outer wall of the lower fixing ring 2 is provided with a fixing assembly, the fixing assembly is used for fixing the lower fixing ring 2 and the upper fixing ring 3, and the inside of the upper fixing ring 3 is provided with a conveying assembly, the conveying assembly is used for conveying the leaked natural gas;

[0026] The fixing assembly comprises a fixed half ring 4, the outer wall of the fixed half ring 4 is fixedly connected to the outer wall of the lower fixing ring 2, one end of the fixed half ring 4 is fixedly connected with a hinge 18, the outer wall of the hinge 18 is fixedly connected with a movable half ring 5, the other end of the fixed half ring 4 is rotatably connected with a bolt 8, the outer wall of the bolt 8 is threadedly connected with a nut 9, the inside of the nut 9 is fixedly connected with a gasket 10, the movable half ring 5 is pulled to drive the upper fixing ring 3 to rotate around the hinge 18, so that the lower fixing ring 2 is attached to the upper fixing ring 3, then the bolt 8 is pulled to move to the inside of the movable half ring 5, then the nut 9 is driven to rotate and cooperate with the gasket 10 to fix the fixed half ring 4 and the movable half ring 5, so that the lower fixing ring 2 and the upper fixing ring 3 are quickly connected, and the conveying assembly comprises a conveying pipeline 11, one end of the conveying pipeline 11 is fixedly connected to the inside of the upper fixing ring 3, the other end of the conveying pipeline 11 is fixedly connected with a storage bin 12, and the leaked natural gas is conveyed to the inside of the storage bin 12 through the conveying pipeline 11 for storage;

[0027] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application. Figure 1 Figure 4 ​​The outer wall of the lower fixed ring 2 and the upper fixed ring 3 is fixedly connected with a sealing strip 13, the outer wall of the sliding rod 14 is slidably connected in the inside of the lower fixed ring 2 and the upper fixed ring 3, the sliding rod 14 is used for guiding the extension and contraction of the spring 16, the outer wall of the movable half ring 5 is fixedly connected to the outer wall of the upper fixed ring 3, the movable half ring 5 is used to drive the upper fixed ring 3 to move together, the gasket 10 is attached to the outer wall of the movable half ring 5, the gasket 10 is used to increase the friction between the nut 9 and the movable half ring 5 to prevent loosening, the outer wall of the storage bin 12 is fixedly connected to the outer wall of the lower fixed ring 2, the storage bin 12 is used for storing natural gas, one end of the spring 16 is fixedly connected to the inside of the sealing ring 17, and the other end of the spring 16 is arranged in the inside of the lower fixed ring 2 and the upper fixed ring 3;

[0028] Working principle: when the natural gas pipeline airtightness monitoring device needs to be used, first of all, the lower fixed ring 2 is placed in the position of the conveying pipeline 1 to be monitored, then the movable half ring 5 is pulled to drive the upper fixed ring 3 to wrap around the outer wall of the conveying pipeline 1, then the bolt 8 is pulled upwards to move to the inside of the movable half ring 5, then the nut 9 is driven to rotate on the outer wall of the bolt 8, and the fixed half ring 4 and the movable half ring 5 are fixed by cooperating with the gasket 10, so that the lower fixed ring 2 and the upper fixed ring 3 are fixed, in this process, the lower fixed ring 2 and the upper fixed ring 3 are attached to each other, so that the sealing strips 13 on both sides are attached to each other, realizing preliminary sealing, at the same time, the lower fixed ring 2 and the upper fixed ring 3 are moved to drive the sealing rings 17 on both sides to attach to the outer wall of the conveying pipeline 1, and at the same time, the sealing rings 17 are stably attached to the outer wall of the conveying pipeline 1 by the pushing of the spring 16, realizing sealing, at this time, if the conveying pipeline 1 leaks natural gas, the pressure plate 19 will be pressed, at this time, the pressure sensor 6 with model Rosemount 3051S is used for real-time monitoring, and the pressure gauge 7 is used for display, in addition, the leaked natural gas will be conveyed to the inside of the storage bin 12 through the conveying pipeline 11 to prevent leakage.

[0029] It should be explained finally: above only is the preferred embodiment of the utility model and is not used for limiting the utility model, although the utility model has been explained in detail with reference to foregoing embodiment, for the skilled person in the art, it still can modify the technical scheme recorded in foregoing each embodiment or make equivalent replacement to part technical features, any modification, equivalent replacement, improvement etc. made within the spirit and principle of the utility model should be contained in the protection scope of the utility model.

Claims

1. A natural gas transmission pipeline gas tightness monitoring device comprising a transmission pipeline (1), characterized in that: The outer wall of the conveying pipeline (1) is provided with a lower fixing ring (2), the outer wall of the lower fixing ring (2) is attached with an upper fixing ring (3), the inner wall of the upper fixing ring (3) is fixedly connected with a pressure sensor (6), the top of the pressure sensor (6) is fixedly connected with a pressure gauge (7), the inner walls of the lower fixing ring (2) and the upper fixing ring (3) are provided with a pressure plate (19), the outer wall of the lower fixing ring (2) is provided with a fixing assembly, the fixing assembly is used for fixing the lower fixing ring (2) and the upper fixing ring (3), and the inside of the upper fixing ring (3) is provided with a conveying assembly, the conveying assembly is used for conveying the leaked natural gas. The fixing assembly comprises a fixed half ring (4), the outer wall of the fixed half ring (4) is fixedly connected to the outer wall of the lower fixing ring (2), one end of the fixed half ring (4) is fixedly connected with a hinge (18), the outer wall of the hinge (18) is fixedly connected with a movable half ring (5), the other end of the fixed half ring (4) is rotatably connected with a bolt (8), the outer wall of the bolt (8) is threadedly connected with a nut (9), and the inside of the nut (9) is fixedly connected with a gasket (10).

2. A natural gas pipeline integrity monitoring apparatus as claimed in claim 1, wherein: The conveying assembly comprises a conveying pipeline (11), one end of the conveying pipeline (11) is fixedly connected to the inside of the upper fixing ring (3), and the other end of the conveying pipeline (11) is fixedly connected with a storage bin (12).

3. A natural gas pipeline integrity monitoring apparatus as defined in claim 1, wherein: The inside of the lower fixing ring (2) and the inside of the upper fixing ring (3) are both slidably connected with a sealing ring (17), the outer wall of the sealing ring (17) is fixedly connected with a limiting plate (15), the inside of the sealing ring (17) is fixedly connected with a sliding rod (14), the outer wall of the sliding rod (14) is sleeved with a spring (16), and the outer walls of the lower fixing ring (2) and the upper fixing ring (3) are fixedly connected with a sealing strip (13).

4. A natural gas pipeline integrity monitoring apparatus as defined in claim 3, wherein: The outer wall of the sliding rod (14) is slidably connected to the inside of the lower fixing ring (2) and the inside of the upper fixing ring (3), and the sliding rod (14) is used for guiding the expansion and contraction of the spring (16).

5. A natural gas pipeline integrity monitoring apparatus as defined in claim 1, wherein: The outer wall of the movable half ring (5) is fixedly connected to the outer wall of the upper fixing ring (3), and the movable half ring (5) is used for driving the upper fixing ring (3) to move together.

6. A natural gas pipeline integrity monitoring apparatus as defined in claim 2, wherein: The outer wall of the gasket (10) is attached to the outer wall of the movable half ring (5), and the gasket (10) is used for increasing the friction between the nut (9) and the movable half ring (5) to prevent loosening.

7. A natural gas pipeline integrity monitoring apparatus as defined in claim 2, wherein: The outer wall of the storage bin (12) is fixedly connected to the outer wall of the lower fixing ring (2), and the storage bin (12) is used for storing natural gas.

8. A natural gas pipeline integrity monitoring apparatus as defined in claim 3, wherein: One end of the spring (16) is fixedly connected to the inside of the sealing ring (17), and the other end of the spring (16) is arranged in the inside of the lower fixing ring (2) and the upper fixing ring (3).

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