Pipeline natural gas leakage alarm system

Abstract

The utility model discloses a pipeline natural gas leakage alarm system which comprises a pipeline body, an upper sealing hoop is arranged at the top of the pipeline body, a supporting block is installed on one side of the upper sealing hoop, a lower sealing hoop is connected to one side of the upper sealing hoop in a hinged mode, a fixing block is installed on one side of the lower sealing hoop, and a hollow column is installed in the fixing block. A limiting plate is mounted on the rod wall of the hollow column, a spindle is slidably mounted in the hollow column, and a protective handle is mounted at one end of the spindle; the upper sealing hoop and the lower sealing hoop on the upper side and the lower side are installed through the screws and the threaded blocks and limited through the check blocks, so that the sealing effect between the upper sealing hoop and the lower sealing hoop is better, and the problems that natural gas leaks from the connecting position, and judgment of an alarm system on natural gas leakage is affected are solved; during maintenance, the main shaft is pushed to drive the clamping block to be separated from the interiors of the limiting block and the limiting plate, so that the upper sealing hoop and the lower sealing hoop are quickly disassembled, and actual use is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of alarm systems, in particular to a pipeline natural gas leakage alarm system. Background Art

[0002] The pipeline natural gas leak alarm system is a device used to monitor natural gas leaks in the pipeline system. By real-time monitoring of the gas concentration in the pipeline system, once abnormal concentration or leakage is detected, the system will issue an alarm so that emergency measures can be taken in time. Therefore, the application of pipeline natural gas leak alarm system in various fields has become quite popular, playing an important role in ensuring people's life and production safety.

[0003] After searching, the patent publication number is "CN 212005202 U", which is a leakage alarm device for natural gas pipelines, including two interconnected and fixed natural gas pipelines, a movable sleeve on the natural gas pipeline is provided with a full-circle sealing ring, the full-circle sealing ring is composed of two semi-circle sealing rings, and the fixed sleeve on the two full-circle sealing rings is provided with the same full-circle pipe with two ends as a blocking structure. The utility model has a simple structure and is easy to operate. It is convenient to timely alarm and remind personnel when a slight leak occurs in the natural gas pipeline, thereby achieving the purpose of early warning. At the same time, it is convenient for personnel to quickly remove the full-circle pipe to repair the leaking position of the welding part, which meets the use requirements and is convenient for use.

[0004] The above technical features have the following deficiencies: Although the above technology realizes the sealing effect of the pipeline connection through the semicircular tube and the semicircular sealing ring, it only plays the role of limiting the position of the card rod by moving the second L-shaped rod to insert the card rod into the inside of the card slot, and cannot tighten the gap between the two semicircular tubes. Therefore, it cannot achieve a good sealing effect on the pipeline connection, and also affects the alarm system's judgment of natural gas leakage. Therefore, a pipeline natural gas leakage alarm system is needed to meet people's needs. Utility Model Content

[0005] The purpose of the utility model is to provide a pipeline natural gas leakage alarm system to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pipeline natural gas leakage alarm system, comprising a pipeline main body, an upper sealing hoop is arranged on the top of the pipeline main body, a supporting block is installed on one side of the upper sealing hoop, a lower sealing hoop is hingedly connected to one side of the upper sealing hoop, a fixing block is installed on one side of the lower sealing hoop, a hollow column is installed inside the fixing block, a limiting plate is installed on the rod wall of the hollow column, a main shaft is slidably installed inside the hollow column, a protective handle is installed on one end of the main shaft, a connecting plate is installed on the other end of the main shaft, a clamping block is installed on one side of the connecting plate, one side of the clamping block is plugged into the inside of the limiting plate, the outer wall of the clamping block is sleeved with the limiting block, a screw is installed on the top of the limiting block, a threaded block is threadedly installed on the rod wall of the screw, a stopper is installed on one side of the threaded block, and a rebound mechanism is provided on the outer wall of the main shaft.

[0007] Preferably, the rebound mechanism includes a sliding plate, the inner wall of the sliding plate is fixed to the shaft wall of the main shaft, the outer wall of the sliding plate is slidably installed with a limiting cylinder, the limiting cylinder is installed on the support block, a limiting spring is installed on one side of the sliding plate, and the other end of the limiting spring is installed on the limiting cylinder.

[0008] Preferably, two sealing grooves are provided inside the upper sealing hoop and the lower sealing hoop, and two sealing blocks are installed on the outer wall of the pipeline body. The outer walls of the two sealing blocks match the size of the inner walls of the corresponding sealing grooves. Air inlet grooves are provided inside the upper sealing hoop and the lower sealing hoop, and a sealed chamber is formed between the two air inlet grooves. A detection alarm mechanism is arranged above the upper sealing hoop.

[0009] Preferably, the detection alarm mechanism comprises a fixed tube, the lower end of the fixed tube and the interior of the sealed chamber are interconnected, a control valve is installed at the upper end of the fixed tube, and an air release valve is installed at one end of the control valve.

[0010] Preferably, a liquid storage tank is installed at the upper end of the control valve, a mounting ring is installed below the inner wall of the liquid storage tank, and an air storage bag is installed on one side of the mounting ring.

[0011] Preferably, a detection port is provided at the top of the liquid storage tank, and a liquid level detection alarm device is installed on the inner wall of the detection port.

[0012] Preferably, an observation window is installed on one side of the liquid storage tank, and a liquid level gauge is installed on one side of the liquid storage tank.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model installs the upper sealing hoop and the lower sealing hoop on the upper and lower sides through screws and threaded blocks, and limits them through blocks, so that the sealing effect between the upper sealing hoop and the lower sealing hoop is better, and natural gas is prevented from leaking from the connection, which affects the alarm system's judgment of natural gas leakage. During maintenance, the main shaft is pushed to drive the block to disengage from the inside of the limit block and the limit plate, so as to quickly complete the disassembly of the upper sealing hoop 2 and the lower sealing hoop 4, which is easy to use.

[0015] 2. The utility model allows the leaked natural gas to flow into the interior of the air inlet groove, and transports the natural gas to the interior of the mounting ring and the air storage bag through the fixed pipe and the control valve, so that the air storage bag gradually increases with the leakage of the gas, and the liquid level inside the liquid storage tank slowly rises. The liquid level detection and alarm device is used to judge the gas leakage and immediately alarm, so that the operator can come to carry out maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model;

[0018] Figure 3 for Figure 2 A in the enlarged view;

[0019] Figure 4 It is a schematic diagram of the cross-sectional connection structure of the liquid storage tank, the mounting ring, and the air storage bag of the utility model;

[0020] Figure 5 for Figure 4 Enlarged view of point B in .

[0021] In the figure: 1. pipeline body; 2. upper sealing hoop; 3. support block; 4. lower sealing hoop; 5. fixed block; 6. hollow column; 7. limit plate; 8. main shaft; 9. connecting plate; 10. clamping block; 11. screw; 12. threaded block; 13. stopper; 14. sliding plate; 15. limit cylinder; 16. limit spring; 17. protective handle; 18. sealing groove; 19. air inlet groove; 20. sealing block; 21. fixed pipe; 22. control valve; 23. air relief valve; 24. liquid storage tank; 25. mounting ring; 26. air storage bag; 27. liquid level detection alarm device; 28. observation window; 29. ​​liquid level gauge. 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] Example 1: Please refer to Figure 1-5 The utility model provides a technical solution: a pipeline natural gas leakage alarm system, comprising a pipeline body 1, an upper sealing hoop 2 is arranged on the top of the pipeline body 1, a support block 3 is installed on one side of the upper sealing hoop 2, a lower sealing hoop 4 is hingedly connected to one side of the upper sealing hoop 2, a fixing block 5 is installed on one side of the lower sealing hoop 4, a hollow column 6 is installed inside the fixing block 5, a limit plate 7 is installed on the rod wall of the hollow column 6, a main shaft 8 is slidably installed inside the hollow column 6, a protective handle 17 is installed at one end of the main shaft 8, a connecting plate 9 is installed at the other end of the main shaft 8, a clamping block 10 is installed on one side of the connecting plate 9, one side of the clamping block 10 is plugged into the inside of the limit plate 7, the outer wall of the clamping block 10 is sleeved with the limit block, a screw rod 11 is installed on the top of the limit block, a threaded block 12 is threadedly installed on the rod wall of the screw rod 11, a stopper 13 is installed on one side of the threaded block 12, and a rebound mechanism is provided on the outer wall of the main shaft 8;

[0024] The rebound mechanism includes a sliding plate 14, the inner wall of the sliding plate 14 is fixed to the shaft wall of the main shaft 8, and the outer wall of the sliding plate 14 is slidably installed with a limiting cylinder 15, and the limiting cylinder 15 is installed on the support block 3. A limiting spring 16 is installed on one side of the sliding plate 14, and the other end of the limiting spring 16 is installed on the limiting cylinder 15. The upper sealing hoop 2 and the lower sealing hoop 4 on the upper and lower sides are installed through the screw 11 and the threaded block 12, and are limited by the stopper 13, so that the sealing effect between the upper sealing hoop 2 and the lower sealing hoop 4 is better, and natural gas leakage from the connection is prevented, which affects the alarm system's judgment of natural gas leakage. During maintenance, the main shaft 8 is pushed to drive the block 10 to disengage from the limiting block and the inside of the limiting plate 7, thereby quickly completing the disassembly of the upper sealing hoop 2 and the lower sealing hoop 4, which is easy to use.

[0025] like Figure 4 and 5As shown, in order to further improve the sealing effect between the connection of the upper sealing hoop 2 and the lower sealing hoop 4, two sealing grooves 18 are provided inside the upper sealing hoop 2 and the lower sealing hoop 4, and two sealing blocks 20 are installed on the outer wall of the pipeline body 1. The outer walls of the two sealing blocks 20 match the inner wall size of the corresponding sealing grooves 18. The upper sealing hoop 2 and the lower sealing hoop 4 are provided with air inlet grooves 19, and a sealing chamber is formed between the two air inlet grooves 19. A detection alarm mechanism is arranged above the upper sealing hoop 2. In order to facilitate more intuitive observation of gas leakage, the detection alarm mechanism includes a fixed pipe 21, the lower end of the fixed pipe 21 and the interior of the sealing chamber are mutually connected, and a control valve 22 is installed on the upper end of the fixed pipe 21. One end of the control valve 22 A relief valve 23 is installed at the end, a liquid storage tank 24 is installed at the upper end of the control valve 22, a mounting ring 25 is installed below the inner wall of the liquid storage tank 24, an air storage bag 26 is installed on one side of the mounting ring 25, a detection port is opened at the top of the liquid storage tank 24, and a liquid level detection alarm device 27 is installed on the inner wall of the detection port. By allowing the leaked natural gas to flow into the interior of the air inlet groove 19, and transporting the natural gas to the interior of the mounting ring 25 and the air storage bag 26 through the fixed pipe 21 and the control valve 22, the air storage bag 26 gradually increases with the leakage of the gas, so that the liquid level inside the liquid storage tank 24 slowly rises, and the liquid level detection alarm device 27 makes a judgment, thereby judging that the gas is leaking and immediately giving an alarm, so that it is convenient for operators to come for maintenance.

[0026] like Figure 1 As shown, an observation window 28 is installed on one side of the liquid storage tank 24, and a liquid level gauge 29 is installed on one side of the liquid storage tank 24. The observation window 28 is convenient for observing the liquid level of the internal liquid from the outside, and the liquid level gauge 29 can be used to make a more intuitive judgment.

[0027] The working principle is as follows: when the utility model is in use, the sealing blocks 20 on both sides are respectively clamped in the corresponding sealing grooves 18, and then the limit block is inserted into the outer wall of the clamping block 10, and then the threaded block 12 is threadedly installed on the outer wall of the screw 11 for connection, and the stopper 13 is clamped on the top of the upper sealing hoop 2, so as to limit the moving position of the threaded block 12. The better the sealing effect between the upper sealing hoop 2 and the lower sealing hoop 4 is during rotation, and at the same time, the main shaft 8 is pushed to one side by the force of the limit spring 16, and the connecting plate 9 is driven to move together, and the clamping block 10 is inserted into the inside of the limit plate 7 during movement, so as to prevent the limit block from being separated from the clamping block 10, so as to make the stability of the fixed structure better, and at the same time, it also prevents natural gas from leaking from the connection between the upper sealing hoop 2 and the lower sealing hoop 4, which affects the problem of the alarm system's judgment of natural gas leakage;

[0028] When natural gas leaks, it first flows into the interior of the air inlet groove 19 through the leak. During maintenance, the main shaft 8 is pushed to drive the block 10 to disengage from the interior of the limit block and the limit plate 7, and the natural gas is transported to the interior of the mounting ring 25 and the air storage bag 26 through the fixed pipe 21 and the control valve 22, so that the air storage bag 26 gradually increases with the gas leakage, and the liquid level inside the liquid storage tank 24 slowly rises, and is judged by the liquid level detection alarm device 27, thereby judging that the gas is leaking and immediately giving an alarm, so that the operator can come for maintenance. At the same time, when working again, the leaked gas is discharged and collected through the air release valve 23, which is convenient for use next time.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipeline natural gas leakage alarm system, comprising a pipeline body (1), characterized in that: An upper sealing hoop (2) is arranged on the top of the pipeline body (1), a support block (3) is installed on one side of the upper sealing hoop (2), a lower sealing hoop (4) is hingedly connected to one side of the upper sealing hoop (2), a fixing block (5) is installed on one side of the lower sealing hoop (4), a hollow column (6) is installed inside the fixing block (5), a limit plate (7) is installed on the rod wall of the hollow column (6), a main shaft (8) is slidably installed inside the hollow column (6), and a protective cover (8) is installed at one end of the main shaft (8). A handle (17) is provided at the other end of the main shaft (8), a connecting plate (9) is provided at one side of the connecting plate (9), one side of the blocking block (10) is inserted into the interior of the limiting plate (7), the outer wall of the blocking block (10) is sleeved with the limiting block, a screw rod (11) is provided at the top of the limiting block, a threaded block (12) is threadedly provided on the rod wall of the screw rod (11), a stopper (13) is provided at one side of the threaded block (12), and a rebound mechanism is provided on the outer wall of the main shaft (8).

2. A pipeline natural gas leakage alarm system according to claim 1, characterized in that: The rebound mechanism comprises a sliding plate (14), the inner wall of the sliding plate (14) is fixed to the shaft wall of the main shaft (8), the outer wall of the sliding plate (14) is slidably mounted with a limiting cylinder (15), the limiting cylinder (15) is mounted on the support block (3), a limiting spring (16) is mounted on one side of the sliding plate (14), and the other end of the limiting spring (16) is mounted on the limiting cylinder (15).

3. A pipeline natural gas leakage alarm system according to claim 1, characterized in that: The upper sealing hoop (2) and the lower sealing hoop (4) are each provided with two sealing grooves (18); the outer wall of the pipeline body (1) is provided with two sealing blocks (20); the outer walls of the two sealing blocks (20) are matched with the inner walls of the corresponding sealing grooves (18); the upper sealing hoop (2) and the lower sealing hoop (4) are each provided with an air inlet groove (19); a sealed chamber is formed between the two air inlet grooves (19); and a detection alarm mechanism is provided above the upper sealing hoop (2).

4. A pipeline natural gas leakage alarm system according to claim 3, characterized in that: The detection alarm mechanism comprises a fixed tube (21), the lower end of the fixed tube (21) and the interior of the sealed chamber are interconnected, a control valve (22) is installed at the upper end of the fixed tube (21), and a gas relief valve (23) is installed at one end of the control valve (22).

5. A pipeline natural gas leakage alarm system according to claim 4, characterized in that: A liquid storage tank (24) is installed at the upper end of the control valve (22), a mounting ring (25) is installed below the inner wall of the liquid storage tank (24), and an air storage bag (26) is installed on one side of the mounting ring (25).

6. A pipeline natural gas leakage alarm system according to claim 5, characterized in that: The top of the liquid storage tank (24) is provided with a detection port, and the inner wall of the detection port is installed with a liquid level detection alarm device (27).

7. A pipeline natural gas leakage alarm system according to claim 5, characterized in that: An observation window (28) is installed on one side of the liquid storage tank (24), and a liquid level gauge (29) is installed on one side of the liquid storage tank (24).

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