Natural gas pipeline safety pressure monitoring device

Abstract

The utility model belongs to the technical field of natural gas conveying, and particularly relates to a natural gas pipeline safety pressure monitoring device which comprises a mounting plate arranged at the top end of a conveying pipeline, a monitoring opening is formed in the position, close to the mounting plate, of the conveying pipeline, a monitoring structure is arranged at the top end of the mounting plate, and a mounting structure is arranged at the bottom end of the mounting plate. Through cooperative use of the sealing plate and the trigger rod, when the pressure in the conveying pipeline rises, the sealing plate moves on the guide rod under the action of the pressure, when the sealing plate moves, the trigger rod is driven to move together, and when the trigger rod moves to the position of the button, the trigger rod presses the button, so that the button starts the alarm to give an alarm on site; therefore, the high-pressure state of the conveying pipeline can be timely reminded for field patrol staff, the staff can conveniently and timely process the high-pressure state, the safety during natural gas conveying is improved, and the patrol difficulty of the staff is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of natural gas transmission technology, specifically relating to a natural gas pipeline safety pressure monitoring device. Background Technology

[0002] During natural gas transportation, external factors such as equipment aging and wear, and filtration system blockage can reduce the flow rate inside the natural gas pipeline, leading to increased internal pressure. If this is not detected in time, long-term use can accelerate equipment damage and easily destroy some sealing structures, resulting in natural gas leaks and potential hazards. Current technology typically involves manual on-site inspections and pressure transmitters to monitor the pressure of natural gas pipelines to prevent excessive pressure. However, manual on-site inspections require checking the pressure transmitter readings and comparing them with those in the central control room, which can easily lead to delayed detection of overpressure in the natural gas pipeline.

[0003] To address the aforementioned issues, this application proposes a natural gas pipeline safety pressure monitoring device. Utility Model Content

[0004] To address the problems mentioned in the background section, this invention provides a natural gas pipeline safety pressure monitoring device with the capability of on-site alarm.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a natural gas pipeline safety pressure monitoring device, comprising an installation plate disposed at the top of a transmission pipeline, a monitoring port disposed near the installation plate on the transmission pipeline, a monitoring structure disposed at the top of the installation plate, and an installation structure disposed at the bottom of the installation plate;

[0006] The monitoring structure includes an adapter with symmetrically arranged first connection ports. A first connecting pipe is fixedly connected to the top surface of the adapter near any one of the first connection ports. A cylinder is provided at the top of the first connecting pipe. A partition is fixedly connected to the top of the inner wall of the cylinder. A guide rod is fixedly connected to the center of the bottom surface of the partition. A baffle is fixedly connected to the bottom of the adapter. A sealing plate is slidably connected to the guide rod. Springs are symmetrically fixedly connected to the top surface of the sealing plate. The top of the springs is fixedly connected to the partition. A button is installed on the bottom surface of the partition. A trigger rod is fixedly connected to the top surface of the sealing plate near the button. An alarm is installed on the top surface of the cylinder and is electrically connected to the button.

[0007] As a preferred embodiment of the natural gas pipeline safety pressure monitoring device of this utility model, the outer wall of the first connecting pipe is provided with an external thread, the bottom of the inner wall of the cylinder is provided with an internal thread, the cylinder is threadedly connected to the first connecting pipe, and a connecting cover is fixedly connected to the inner wall of the cylinder near the first connecting pipe, the bottom of the connecting cover being disposed inside the first connecting pipe.

[0008] As a preferred embodiment of the natural gas pipeline safety pressure monitoring device of this utility model, a sealing groove is provided on the top surface of the adapter near the first connecting pipe, a first retaining ring is fixedly connected to the outer wall of the cylinder, a first sealing ring is fixedly connected to the bottom surface of the first retaining ring, and the first sealing ring is disposed in the sealing groove.

[0009] As a preferred embodiment of the natural gas pipeline safety pressure monitoring device of this utility model, a second connecting pipe is fixedly connected to the top surface of the adapter at a position away from the first connecting pipe, the inner wall of the second connecting pipe is provided with an internal thread, and a pressure transmitter is installed on the second connecting pipe.

[0010] As a preferred embodiment of the natural gas pipeline safety pressure monitoring device of this utility model, the installation structure includes a threaded connector, which is fixedly connected to the bottom surface of the adapter. The threaded connector has a second connection port, and the first connection port communicates with the second connection port. The center of the mounting plate has an installation hole, and the threaded connector is disposed in the installation hole and threadedly connected to the monitoring port. A sealing cover is fixedly connected to the bottom surface of the mounting plate outside the monitoring port. A second sealing ring is fixedly connected to the bottom surface of the mounting plate inside the sealing cover. A second retaining ring is fixedly connected to the top surface of the mounting plate. A third sealing ring is fixedly connected to the top of the outer wall of the threaded connector, and the third sealing ring is disposed inside the second retaining ring.

[0011] As a preferred embodiment of the natural gas pipeline safety pressure monitoring device of this utility model, clamps are symmetrically arranged on both sides of the bottom surface of the mounting plate. The clamps are located on the outside of the conveying pipeline. A connecting plate is fixedly connected to the top of each clamp. A first connecting hole is provided on each connecting plate. A second connecting hole is provided on each mounting plate near the first connecting hole. The mounting plate is fixedly connected to the connecting plate by using bolts passing through the second connecting hole and the first connecting hole.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: A monitoring structure is added to this application, which utilizes the cooperation of a sealing plate and a trigger rod. When the pressure inside the pipeline increases, the sealing plate moves on the guide rod under pressure. This movement of the sealing plate causes the trigger rod to move as well. When the trigger rod reaches the button position, it presses the button, activating the alarm and providing on-site alerts to the high-pressure status of the pipeline for timely handling by on-site personnel. This improves the safety of natural gas transportation and reduces the difficulty of inspections. Simultaneously, an installation structure is added. By installing clamps on the pipeline and then fixing the mounting plate to the connecting plate on the clamps, the pressure monitoring device can be easily installed at the monitoring port of the pipeline. Multiple sealing rings are also provided, effectively improving the sealing performance of multiple connections of the pressure monitoring device, preventing natural gas leakage, and enhancing safety during use. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 In this utility model Figure 1 A schematic diagram of the first partial structure;

[0016] Figure 3 In this utility model Figure 1 A schematic diagram of the second local structure;

[0017] Figure 4 In this utility model Figure 3 A schematic diagram of the first partial structure;

[0018] Figure 5 In this utility model Figure 4 A schematic diagram of the first partial structure;

[0019] Figure 6 In this utility model Figure 4 A schematic diagram of the second local structure;

[0020] Figure 7 In this utility model Figure 3 A schematic diagram of the second local structure;

[0021] Figure 8 In this utility model Figure 7 A sectional view;

[0022] In the picture:

[0023] 1. Delivery pipeline; 11. Monitoring port;

[0024] 2. Mounting plate;

[0025] 3. Monitoring structure; 31. Adapter; 32. First connection port; 33. First connecting pipe; 34. Cylinder; 35. Partition; 36. Guide rod; 37. Baffle; 38. Sealing plate; 39. Spring; 310. Trigger rod; 311. Button; 312. Alarm; 313. Connecting cover; 314. First retaining ring; 315. First sealing ring; 316. Sealing groove; 317. Second connecting pipe; 318. Pressure transmitter;

[0026] 4. Installation structure; 41. Threaded connector; 42. Second connection port; 43. Mounting hole; 44. Sealing cover; 45. Second sealing ring; 46. Second retaining ring; 47. Third sealing ring; 48. Clamp; 49. Connecting plate; 410. First connection hole; 411. Second connection hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1

[0029] like Figures 1 to 8 As shown;

[0030] Based on the above:

[0031] In order to enable on-site alarm, this natural gas pipeline safety pressure monitoring device includes an installation plate 2 installed at the top of the transmission pipeline 1, a monitoring port 11 installed near the installation plate 2 on the transmission pipeline 1, a monitoring structure 3 installed at the top of the installation plate 2, and an installation structure 4 installed at the bottom of the installation plate 2.

[0032] The monitoring structure 3 includes an adapter 31, on which first connection ports 32 are symmetrically arranged. A first connecting pipe 33 is fixedly connected to the top surface of the adapter 31 near any one of the first connection ports 32. A cylinder 34 is provided at the top of the first connecting pipe 33. A partition 35 is fixedly connected to the top of the inner wall of the cylinder 34. A guide rod 36 is fixedly connected to the center of the bottom surface of the partition 35. A baffle 37 is fixedly connected to the bottom of the adapter 31. A sealing plate 38 is slidably connected to the guide rod 36. Springs 39 are symmetrically fixedly connected to the top surface of the sealing plate 38. The top of the springs 39 is fixedly connected to the partition 35. A button 311 is installed on the bottom surface of the partition 35. A trigger rod 310 is fixedly connected to the top surface of the sealing plate 38 near the button 311. An alarm 312 is installed on the top surface of the cylinder 34. The alarm 312 is electrically connected to the button 311.

[0033] In this implementation scheme: In the initial state, the sealing plate 38 is placed at the bottom of the guide rod 36 under the action of the spring 39 and is limited by the baffle 37. When the pressure in the conveying pipeline 1 increases, the sealing plate 38 will move on the guide rod 36 under the action of pressure. When the sealing plate 38 moves, it will drive the trigger rod 310 to move together, so that the trigger rod 310 moves in the direction of the button 311. When the trigger rod 310 moves to the position of the button 311, the trigger rod 310 will press the button 311, so that the button 311 will activate the alarm 312 to alarm on site, thereby promptly reminding the on-site inspection personnel of the high pressure status of the conveying pipeline 1, facilitating timely handling by the personnel, improving the safety of natural gas transmission, and reducing the difficulty of inspection by the personnel. When the sealing plate 38 moves upward, it will cause the spring 39 to change from a relaxed state to a compressed state. When the pressure in the conveying pipeline 1 returns to normal, the sealing plate 38 will reset under the action of the spring 39 and move the trigger rod 310 away from the button 311, thereby deactivating the alarm 312.

[0034] Furthermore:

[0035] In an optional embodiment, the outer wall of the first connecting pipe 33 is provided with an external thread, and the bottom of the inner wall of the cylinder 34 is provided with an internal thread. The cylinder 34 is threadedly connected to the first connecting pipe 33, and a connecting cover 313 is fixedly connected to the inner wall of the cylinder 34 near the first connecting pipe 33. The bottom of the connecting cover 313 is located inside the first connecting pipe 33.

[0036] In this embodiment, the cylinder 34 and the first connecting pipe 33 are connected separately, which allows the cylinder 34 to be easily installed on the first connecting pipe 33, making it convenient for staff to inspect the components inside the cylinder 34. In addition, the connecting cover 313 can improve the sealing of the connection between the cylinder 34 and the first connecting pipe 33 and prevent natural gas leakage.

[0037] Furthermore:

[0038] In an optional embodiment, a sealing groove 316 is provided on the top surface of the adapter 31 near the first connecting pipe 33, a first retaining ring 314 is fixedly connected to the outer wall of the cylinder 34, a first sealing ring 315 is fixedly connected to the bottom surface of the first retaining ring 314, and the first sealing ring 315 is disposed in the sealing groove 316.

[0039] In this embodiment, when the cylinder 34 is installed, the first sealing ring 315 is placed in the sealing groove 316, and the first retaining ring 314 blocks the sealing groove 316, thereby improving the sealing performance at the connection between the cylinder 34 and the adapter 31.

[0040] Furthermore:

[0041] In an optional embodiment, a second connecting pipe 317 is fixedly connected to the top surface of the adapter 31 at a position away from the first connecting pipe 33. The inner wall of the second connecting pipe 317 is provided with an internal thread, and a pressure transmitter 318 is installed on the second connecting pipe 317.

[0042] In this embodiment, the pressure transmitter 318 can monitor the pressure status of the pipeline and transmit the data to the central control room, so that the staff can understand the pipeline pressure status in real time.

[0043] Furthermore:

[0044] In an optional embodiment, the mounting structure 4 includes a threaded connector 41, which is fixedly connected to the bottom surface of the adapter 31. The threaded connector 41 has a second connection port 42, and all first connection ports 32 communicate with the second connection port 42. A mounting hole 43 is provided at the center of the mounting plate 2, and the threaded connector 41 is disposed within the mounting hole 43 and threadedly connected to the monitoring port 11. A sealing cover 44 is fixedly connected to the bottom surface of the mounting plate 2 at a position outside the monitoring port 11, and a second sealing ring 45 is fixedly connected to the bottom surface of the mounting plate 2 at a position inside the sealing cover 44. The top surface of the mounting plate 2... A second retaining ring 46 is fixedly connected. A third sealing ring 47 is fixedly connected to the top of the outer wall of the threaded connector 41. The third sealing ring 47 is located inside the second retaining ring 46. Clamps 48 are symmetrically arranged on both sides of the bottom surface of the mounting plate 2. The clamps 48 are located on the outside of the conveying pipe 1. A connecting plate 49 is fixedly connected to the top of each clamp 48. A first connecting hole 410 is provided on each connecting plate 49. A second connecting hole 411 is provided on each mounting plate 2 near the first connecting hole 410. The mounting plate 2 is fixedly connected to the connecting plate 49 by using bolts passing through the second connecting hole 411 and the first connecting hole 410.

[0045] In this embodiment: by installing clamp 48 on the pipeline and then fixing mounting plate 2 to connecting plate 49 on clamp 48, the pressure monitoring device can be easily installed at monitoring port 11 of the pipeline. By connecting threaded connector 41 to monitoring port 11, natural gas in the pipeline can be transmitted through second connector 42 to adapter 31, and then through adapter 31 to first connector 32, facilitating monitoring of the pressure of natural gas in the pipeline. At the same time, sealing cover 44 can block monitoring port 11, and the sealing performance of the connection between threaded connector 41 and monitoring port 11 is improved by the action of second sealing ring 45. Furthermore, by setting second retaining ring 46 and third sealing ring 47, the sealing performance of the connection between adapter 31 and mounting plate 2 can be improved, thereby effectively improving the sealing performance of multiple connections of the pressure monitoring device, preventing natural gas leakage, and improving safety during use.

[0046] The working principle and usage process of this utility model are as follows: First, by installing a clamp 48 on the conveying pipeline 1, and then fixing the mounting plate 2 to the connecting plate 49 on the clamp 48, the pressure monitoring device can be easily installed at the monitoring port 11 of the conveying pipeline 1. Then, by connecting the threaded connector 41 to the monitoring port 11, the natural gas in the conveying pipeline 1 can be transmitted through the second connection port 42 to the adapter 31, and then through the adapter 31 to the first connection port 32, thereby transmitting the gas to the pressure transmitter 318 located in the cylinder 34, enabling the pressure transmitter 318 to monitor the pressure status of the pipeline and transmit the pressure. Data is transmitted to the central control room, allowing staff to monitor pipeline pressure in real time. Initially, the sealing plate 38 inside the cylinder 34 is positioned at the bottom of the guide rod 36 under the action of the spring 39 and is limited by the baffle 37. When the pressure inside the conveying pipeline 1 increases, the sealing plate 38 moves on the guide rod 36 under pressure. This movement of the sealing plate 38 causes the trigger rod 310 to move in the direction of the button 311. When the trigger rod 310 reaches the position of the button 311, it presses the button 311, activating it. The alarm 312 is activated to provide on-site alerts, promptly reminding on-site inspectors of the high-pressure status of the pipeline 1, facilitating timely handling and reducing the difficulty of inspections. When the sealing plate 38 moves upward, the spring 39 changes from a relaxed state to a compressed state. When the pressure in the pipeline 1 returns to normal, the sealing plate 38 resets under the action of the spring 39, causing the trigger rod 310 to move away from the button 311, thus deactivating the alarm 312. Simultaneously, the first sealing ring 315 is placed within the sealing groove 316, and the first retaining ring 314 engages with the sealing groove 316. The sealing cover 44 can block the monitoring port 11 and improve the sealing performance at the connection between the threaded connector 41 and the monitoring port 11 under the action of the second sealing ring 45. By setting the second retaining ring 46 and the third sealing ring 47, the sealing performance at the connection between the connector 31 and the mounting plate 2 can be improved, thereby effectively improving the sealing performance of multiple connections of the pressure monitoring device, preventing natural gas leakage, improving safety during use, and realizing real-time monitoring of the pressure in the natural gas transmission pipeline 1, thus improving the safety of natural gas transmission.

[0047] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A natural gas pipeline safety pressure monitoring device, comprising an installation plate (2) installed at the top of a transmission pipeline (1), characterized in that: The conveying pipe (1) is provided with a monitoring port (11) near the mounting plate (2), the top of the mounting plate (2) is provided with a monitoring structure (3), and the bottom of the mounting plate (2) is provided with a mounting structure (4). The monitoring structure (3) includes an adapter (31), on which first connection ports (32) are symmetrically arranged. A first connecting pipe (33) is fixedly connected to the top surface of the adapter (31) near any one of the first connection ports (32). A cylinder (34) is provided at the top of the first connecting pipe (33). A partition (35) is fixedly connected to the top of the inner wall of the cylinder (34). A guide rod (36) is fixedly connected to the center of the bottom surface of the partition (35). A stop is fixedly connected to the bottom end of the adapter (31). A sealing plate (38) is slidably connected to the guide rod (36) of the plate (37). A spring (39) is symmetrically fixedly connected to the top surface of the sealing plate (38). The top end of the spring (39) is fixedly connected to the partition plate (35). A button (311) is installed on the bottom surface of the partition plate (35). A trigger rod (310) is fixedly connected to the top surface of the sealing plate (38) near the button (311). An alarm (312) is installed on the top surface of the cylinder (34). The alarm (312) is electrically connected to the button (311).

2. The natural gas pipeline safety pressure monitoring device according to claim 1, characterized in that: The outer wall of the first connecting pipe (33) is provided with an external thread, and the bottom of the inner wall of the cylinder (34) is provided with an internal thread. The cylinder (34) is threadedly connected to the first connecting pipe (33). A connecting cover (313) is fixedly connected to the inner wall of the cylinder (34) near the first connecting pipe (33). The bottom of the connecting cover (313) is located inside the first connecting pipe (33).

3. The natural gas pipeline safety pressure monitoring device according to claim 1, characterized in that: The top surface of the adapter (31) is provided with a sealing groove (316) near the first connecting pipe (33). A first retaining ring (314) is fixedly connected to the outer wall of the cylinder (34). A first sealing ring (315) is fixedly connected to the bottom surface of the first retaining ring (314). The first sealing ring (315) is located in the sealing groove (316).

4. The natural gas pipeline safety pressure monitoring device according to claim 1, characterized in that: The top surface of the adapter (31) is fixedly connected to a second connecting pipe (317) at a position away from the first connecting pipe (33). The inner wall of the second connecting pipe (317) is provided with an internal thread, and a pressure transmitter (318) is installed on the second connecting pipe (317).

5. The natural gas pipeline safety pressure monitoring device according to claim 1, characterized in that: The mounting structure (4) includes a threaded connector (41), which is fixedly connected to the bottom surface of the adapter (31). The threaded connector (41) is provided with a second connection port (42), and the first connection port (32) is connected to the second connection port (42). The mounting plate (2) is provided with a mounting hole (43) at its center. The threaded connector (41) is located in the mounting hole (43) and is threadedly connected to the monitoring port (11). A sealing cover (44) is fixedly connected to the bottom surface of the mounting plate (2) at the position outside the monitoring port (11). A second sealing ring (45) is fixedly connected to the bottom surface of the mounting plate (2) at the position inside the sealing cover (44). A second retaining ring (46) is fixedly connected to the top surface of the mounting plate (2). A third sealing ring (47) is fixedly connected to the top position of the outer wall of the threaded connector (41). The third sealing ring (47) is located inside the second retaining ring (46).

6. The natural gas pipeline safety pressure monitoring device according to claim 5, characterized in that: The mounting plate (2) has clamps (48) symmetrically arranged on both sides of its bottom surface. The clamps (48) are arranged on the outside of the conveying pipe (1). The top of each clamp (48) is fixedly connected to a connecting plate (49). Each connecting plate (49) has a first connecting hole (410). The mounting plate (2) has a second connecting hole (411) near the first connecting hole (410). The mounting plate (2) is fixedly connected to the connecting plate (49) by using bolts passing through the second connecting hole (411) and the first connecting hole (410).

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