A monitoring device for a natural gas transmission pipeline

Abstract

The present application relates to a monitoring device for a natural gas transmission pipeline, comprising an installation box, a mounting box cover disposed at a pipeline connection, a plurality of adjustment blocks disposed on the outer wall of the installation box, the plurality of adjustment blocks being evenly distributed along the circumference of the installation box, a cavity formed within the adjustment block, the cavity communicating with the interior of the installation box, each cavity being provided with a sealing mechanism for sealing a leak in the pipeline, a trigger mechanism for driving the sealing mechanism disposed between the sealing mechanism and the adjustment block, the trigger mechanism being triggered by gas. When a leak occurs at a pipeline joint outside of maintenance hours, the gas first flows into the installation box. Within the installation box, upon contacting the trigger mechanism, the trigger mechanism activates the sealing structure to urgently seal the pipeline joint, thereby reducing the probability of a large-scale natural gas leak due to maintenance personnel failing to promptly inspect the pipeline. The present application has the function of reducing the probability of safety accidents.

Description

Technical Field

[0001] The present application relates to the technical field of pipeline detection, and in particular to a monitoring device for a natural gas transmission pipeline. Background Art

[0002] Natural gas is a fuel widely used in modern construction. It has the advantages of high unit calorific value, low exhaust pollution and low price. Natural gas is generally transported through pipelines. Natural gas pipelines are made up of multiple sections of pipes. The joints of the pipes are connected by flanges and sealed. However, the pipelines will still leak during long-term use, so staff need to conduct regular inspections.

[0003] In the prior art, when inspecting a natural gas pipeline, a handheld detector is usually used to inspect the pipeline joints along the outer surface of the pipeline.

[0004] With respect to the above-mentioned related technologies, the inventor believes that when a gas leak occurs in a transmission pipeline outside of maintenance time, a safety accident may easily occur due to the inability to promptly handle the gas leak. Summary of the Invention

[0005] In order to reduce the probability of safety accidents due to gas leakage in natural gas pipelines.

[0006] The present application provides a monitoring device for a natural gas transmission pipeline using the following technical solutions:

[0007] A monitoring device for a natural gas transmission pipeline includes an installation box, wherein the installation box cover is arranged at a pipeline connection point, and a plurality of adjustment blocks are arranged on the outer wall of the installation box. The plurality of adjustment blocks are evenly distributed along the circumference of the installation box. A cavity is defined inside the adjustment block, and the cavity is connected to the interior of the installation box. A sealing mechanism for sealing a gas leak point in the pipeline is provided in each of the cavities. A trigger mechanism for driving the sealing mechanism is provided between the sealing mechanism and the adjustment block, and the trigger mechanism is triggered by gas.

[0008] By adopting the above technical solution, when a gas leak occurs at the pipeline joint outside the maintenance period, the gas first flows into the installation box. Inside the installation box, after the gas contacts the trigger mechanism, the trigger mechanism activates the sealing structure to urgently seal the pipeline joint, thereby reducing the probability of large-scale natural gas leakage due to maintenance personnel's failure to inspect the pipeline in time, thereby reducing the probability of safety accidents.

[0009] Optionally, the closing mechanism includes an arc-shaped plate and a connecting rod, the arc-shaped plate is radially slidably arranged in the installation box along the installation box, one end of the connecting rod is arranged on the arc-shaped plate, and the other end of the connecting rod passes through and extends out of the adjustment block, and the connecting rod is connected to the trigger mechanism.

[0010] By adopting the above technical solution, when the leaked natural gas contacts the trigger mechanism, the trigger mechanism drives the connecting rod to slide toward the pipeline, thereby driving the arc plate to slide toward the pipeline and abut against the pipeline joint to seal the leak.

[0011] Optionally, the trigger mechanism includes a sealing plate and an elastic block, the sealing plate is provided with a sliding hole, the sealing plate is slidably sleeved on the connecting rod along the sliding direction of the arc plate, the sealing plate is sealed with the inner wall of the cavity, the elastic block is arranged on the side wall of the connecting rod, and the inner wall of the sliding hole is provided with a slot, and the elastic block can be engaged with or disengaged from the slot.

[0012] By adopting the above technical solution, when natural gas enters the installation box, it contacts the sealing plate. As the amount of natural gas leakage increases, the gas will generate thrust on the sealing plate, causing the sealing plate to slide relative to the connecting rod, thereby causing the elastic block to disengage from the slot. At this time, the arc plate is driven by the connecting rod to slide against the connection of the delivery pipeline, thereby blocking the leakage point.

[0013] Optionally, a groove is provided at one end of the adjustment block away from the installation box, a warning block is provided inside the groove for radial sliding along the installation box, the connecting rod extends from the bottom of the groove, and the warning block is fixedly connected to the end of the connecting rod away from the arc plate.

[0014] By adopting the above technical solution, when natural gas leaks, the arc plate slides toward the pipeline to block the leak point, while driving the warning block to slide toward the bottom of the groove and retract into the groove. When maintenance personnel perform maintenance, they only need to observe whether the warning block is inside the groove, so as to judge whether there is a leak in the pipeline, which is convenient and quick.

[0015] Optionally, an electric control button is provided at the bottom of the groove, an electric bell is provided on the outer wall of the adjustment block, and the electric control button is connected to the electric bell.

[0016] By adopting the above technical solution, when the pipeline leaks, the warning block slides toward the bottom of the groove and is retracted into the groove, pressing the electric control button, thereby turning on the electric bell and sounding an alarm, thereby reminding maintenance personnel.

[0017] Optionally, the installation box can be detachably installed at the connection of the conveying pipeline. The installation box includes several sub-boxes and connecting mechanisms. The several sub-boxes are distributed along the circumference of the pipeline. The several sub-boxes correspond one-to-one to the several adjustment blocks. There are several connecting mechanisms, and a connecting mechanism is provided between every two sub-boxes.

[0018] By adopting the above technical solution, the installation box can be easily assembled and disassembled.

[0019] Optionally, the connecting mechanism includes a connecting plate and a connecting bolt, the connecting plate is arranged on the outer wall of the sub-box, and the connecting bolt is threadedly passed through the connecting plate.

[0020] By adopting the above technical solution, the assembly and disassembly of the installation box is further facilitated.

[0021] Optionally, the connecting plate extends radially along the installation box to the interior of the installation box and abuts against an outer wall of the pipeline.

[0022] By adopting the above technical solution, the connecting plate divides the interior of the installation box and encloses the leaked natural gas in an area, so that each sub-box and each regulating block correspond to a maintenance area. When a gas leak occurs, the maintenance personnel do not need to remove all the sub-boxes, but only need to remove the sub-boxes in the leaking area for maintenance, which is convenient and quick, and also makes it easy for the maintenance personnel to find the leaking area as soon as possible.

[0023] Optionally, a marking layer is arranged on the circumferential outer side wall of the warning block.

[0024] By adopting the above technical solution, it is convenient for maintenance personnel to observe the status of the warning block.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. Inside the installation box, when the gas contacts the trigger mechanism, the trigger mechanism activates the sealing structure to urgently seal the pipe joint, reducing the probability of large-scale natural gas leakage due to maintenance personnel failing to inspect the pipeline in time, thereby reducing the probability of safety accidents.

[0027] 2. It is convenient and quick to judge whether the pipeline is leaking by observing whether the warning block is in the groove.

[0028] 3. By observing the status of the warning blocks at each adjustment block, the area of ​​the leak can be determined for easy maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present application.

[0030] Figure 2 This is a schematic diagram of the structure in which one of the sub-boxes in this embodiment is disassembled.

[0031] Figure 3 This is a half-section view of this embodiment.

[0032] Figure 4 for Figure 3 Enlarged view of part A in the middle.

[0033] Figure 5 for Figure 3 Enlarged view of part B in the middle.

[0034] Explanation of the accompanying drawings: 1. Installation box; 101. Sub-box; 102. Connecting mechanism; 1021. Connecting plate; 1022. Connecting bolt; 2. Adjusting block; 3. Cavity; 4. Closing mechanism; 401. Arc plate; 402. Connecting rod; 5. Groove; 6. Warning block; 7. Trigger mechanism; 701. Sealing plate; 702. Elastic block; 8. Telescopic opening; 9. Abutment plate; 10. First spring; 11. Slot; 12. Second spring; 13. Sliding hole; 14. Third spring; 15. Electric control button; 16. Electric bell. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-5 This application is described in further detail.

[0036] An embodiment of the present application discloses a monitoring device for a natural gas transmission pipeline.

[0037] A monitoring device for natural gas transmission pipelines, referring to Figure 1 and Figure 2 , including an installation box 1, the installation box 1 is a cylindrical box, the installation box 1 is detachably sleeved at the connection of the delivery pipe, the installation box 1 includes a sub-box 101 and a connecting mechanism 102, there are four sub-boxes 101, each sub-box 101 is a quarter of the installation box 1, and the four sub-boxes 101 are distributed along the circumference of the pipeline, the connecting mechanism 102 includes a connecting plate 1021 fixed to the outer wall of the sub-box 101 and a connecting bolt 1022 threadedly penetrated through the connecting plate 1021, two connecting plates 1021 are provided between each two sub-boxes 101, and the two connecting plates 1021 are connected by the connecting bolt 1 022 is fixed, so that the four sub-boxes 101 are connected in pairs to cover the pipe connection. The connecting plate 1021 extends along the radial direction of the pipe to abut the pipe connection. The abutment between the connecting plate 1021 and the pipe is sealed. The connecting plate 1021 divides the interior of the installation box 1 and encloses the leaked natural gas in an area, so that each sub-box 101 corresponds to a maintenance area. When a gas leak occurs, the maintenance personnel do not need to remove all the sub-boxes 101. They only need to remove the sub-box 101 in the leaking area for maintenance. This is convenient and quick, and it is also easy for the maintenance personnel to find the leaking area as soon as possible.

[0038] Reference Figure 3 and Figure 4, the outer walls of the four sub-boxes 101 are all fixed with regulating blocks 2, one regulating block 2 and one sub-box 101 are integral, and the four regulating blocks 2 are distributed in a cross shape, and the regulating blocks 2 are trapezoidal blocks, and the end of the regulating block 2 facing the pipeline is an arc surface that fits the outer wall of the sub-box 101, and a cavity 3 is opened inside the regulating block 2, and the cavity 3 is connected to the interior of the sub-box 101, and a sealing mechanism 4 for sealing the leakage point of the pipeline is provided in the cavity 3, and a trigger mechanism 7 for driving the sealing mechanism 4 is provided between the sealing mechanism 4 and the regulating block 2. The trigger mechanism 7 is triggered by gas. When a leak occurs at the pipeline joint outside the maintenance time, the gas first flows into the installation box 1. In the installation box 1, after the gas contacts the trigger mechanism 7, the trigger mechanism 7 activates the sealing structure to perform an emergency temporary sealing at the pipeline joint, reducing the probability of large-scale leakage of natural gas due to the maintenance personnel's failure to repair the pipeline in time, thereby reducing the probability of safety accidents.

[0039] Reference Figure 3 and Figure 4 The closing mechanism 4 includes an arc-shaped plate 401 arranged in the sub-box 101 and a connecting rod 402 arranged on the arc-shaped plate 401. The arc of the arc-shaped plate 401 is a quarter of a circle. The circumference of the circle surrounded by the four arc-shaped plates 401 is equal to the circumference of the outer wall of the pipe connection. A gap is left between the arc-shaped plate 401 and the connecting plate 1021 for the arc-shaped plate 401 to slide. The arc-shaped plate 401 can be tightly pressed against the pipe connection. The arc-shaped plate 401 is radially slidably arranged in the installation box 1. One end of the connecting rod 402 is arranged on the arc-shaped plate 401, and the other end of the connecting rod 402 passes through and extends out of the adjustment block 2. The adjustment block 2 is provided with a groove 5 at one end away from the installation box 1. The inside of the groove 5 is along the installation box A warning block 6 is provided for radial sliding. The end of the connecting rod 402 away from the curved plate 401 extends from the bottom of the groove 5. The warning block 6 is fixedly connected to the end of the connecting rod 402 away from the curved plate 401. The connecting rod 402 is connected to the trigger mechanism 7. When the leaked natural gas contacts the trigger mechanism 7, the trigger mechanism 7 drives the connecting rod 402 to slide toward the pipeline, thereby driving the curved plate 401 to slide toward the pipeline, thereby abutting against the joint of the pipeline to block the gas leak, and at the same time drives the warning block 6 to slide toward the bottom of the groove 5 and retract into the groove 5. When the maintenance personnel perform maintenance, they only need to observe whether the warning block 6 is inside the groove 5, so as to facilitate the judgment of whether there is a gas leak in the pipeline, which is convenient and quick.

[0040] Reference Figure 3 and Figure 4 The warning block 6 can be completely retracted into the groove 5, and the warning block 6 abuts against the side wall of the groove 5. The circumferential side walls of the warning block 6 are sprayed with a green paint identification layer. When the warning block 6 is outside the groove 5, the green paint is revealed, which is convenient for maintenance personnel to observe. When the warning block 6 is retracted into the groove 5, the side wall of the groove 5 will cover the green paint, which is convenient for reminding maintenance personnel of air leakage.

[0041] Reference Figure 3 、 Figure 4 and Figure 5 The trigger mechanism 7 includes a sealing plate 701 arranged in the cavity 3 and an elastic block 702 arranged on the connecting rod 402. The sealing plate 701 is provided with a sliding hole 13. The sealing plate 701 is provided with a telescopic opening 8 at both ends in the length direction. The telescopic opening 8 is provided with a first spring 10. One end of the first spring 10 is fixedly connected to the bottom of the telescopic opening 8. The other end of the first spring 10 is fixedly connected to an abutment plate 9. The abutment plate 9 is slidably arranged in the telescopic opening 8. The first spring 10 drives the two abutment plates 9 toward The inner wall of the cavity 3 slides and thus presses against the inner wall of the cavity 3. The sealing plate 701 slides along the sliding direction of the arc plate 401 and is sleeved on the connecting rod 402. The connecting rod 402 is sleeved with a second spring 12. One end of the second spring 12 is fixedly connected to the sealing plate 701. The other end of the second spring 12 is fixedly connected to the top wall of the cavity 3. The elastic block 702 is fixedly arranged on the side wall of the connecting rod 402. The elastic block 702 is a sphere. There are four elastic blocks 702. The four elastic blocks 702 are distributed circumferentially along the connecting rod 402. The sliding hole 1 The inner wall is provided with four card slots 11 matching with the elastic card block 702. The elastic card block 702 can be engaged or disengaged from the card slots 11. A third spring 14 is provided between the warning block 6 and the bottom of the groove 5. One end of the third spring 14 is fixedly connected to the warning block 6, and the other end of the third spring 14 is fixedly connected to the bottom of the groove 5. The second spring 12 drives the sealing plate 701 to slide away from the pipeline, and the elastic force of the third spring 14 drives the warning block 6 to slide toward the pipeline. The amount of natural gas leakage is proportional to the thrust exerted by the natural gas on the sealing plate 701. Proportional, when the pipeline leaks, as the amount of natural gas leakage increases, the gas applies thrust to the sealing plate 701, causing the sealing plate 701 to drive the warning block 6 to slide away from the pipeline through the cooperation of the card slot 11 and the elastic card block 702. At this time, the elastic deformation of the third spring 14 increases, which increases the elastic force of the third spring 14, so that the elastic force of the third spring 14 drives the warning block 6 to drive the elastic card block 702 to disengage from the card slot 11, and then causes the arc plate 401 to slide against the pipeline connection, thereby blocking the leak point conveniently and quickly.

[0042] Reference Figure 3 An electric control button 15 is fixed at the bottom of the groove 5, and an electric bell 16 is fixed on the outer wall of the adjustment block 2. Each electric control button 15 is connected to an electric bell 16. When the pipeline leaks, the warning block 6 slides toward the bottom of the groove 5 and is retracted into the groove 5, pressing the electric control button 15, so that the electric bell 16 is energized and an alarm is sounded, which is convenient for reminding maintenance personnel.

[0043] The implementation principle of the embodiment is as follows: when there is no gas leakage in the pipeline, the side wall of the warning block 6 is exposed outside the groove 5, and the green paint leaks out, indicating a safe state. When a gas leakage occurs in the pipeline, the natural gas triggers the sealing plate 701 to move, so that the third spring 14 pulls the warning block 6 into the groove 5 to hide the side wall. At the same time, the warning block 6 triggers the electric control button 15, so that the electric bell 16 in the leaking area sounds an alarm. After receiving the alarm, the maintenance personnel remove the sub-box 101 in the leaking area for maintenance. After the maintenance is completed, the trigger mechanism 7 and the closing mechanism 4 are manually returned to their original positions, and then the sub-box 101 is reinstalled at the pipeline connection.

[0044] The above are preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A monitoring device for a natural gas transmission pipeline, characterized in that: The utility model comprises an installation box (1), wherein the installation box (1) is covered at a pipe connection, a plurality of adjustment blocks (2) are arranged on the outer wall of the installation box (1), the plurality of adjustment blocks (2) are evenly distributed along the circumference of the installation box (1), a cavity (3) is opened inside the adjustment block (2), the cavity (3) is connected to the interior of the installation box (1), a sealing mechanism (4) for sealing a gas leak point of the pipe is arranged in each cavity (3), a trigger mechanism (7) for driving the sealing mechanism (4) is arranged between the sealing mechanism (4) and the adjustment block (2), and the trigger mechanism (7) is triggered by gas; the sealing mechanism (4) is connected to the inner wall of the installation box (1), and the plurality of adjustment blocks (2) are evenly distributed along the circumference of the installation box (1), ... The mechanism (4) includes an arc-shaped plate (401) and a connecting rod (402), wherein the arc-shaped plate (401) is radially slidably arranged in the installation box (1), one end of the connecting rod (402) is arranged on the arc-shaped plate (401), and the other end of the connecting rod (402) passes through and extends out of the adjustment block (2), and the connecting rod (402) is connected to the trigger mechanism (7); the trigger mechanism (7) includes a sealing plate (701) and an elastic block (702), the sealing plate (701) is provided with a sliding hole (13), and the sealing plate (701) is arranged along the arc-shaped plate. (401) sliding direction sliding sleeve is provided on the connecting rod (402), the connecting rod (402) is provided with a second spring (12), one end of the second spring (12) is fixedly connected to the sealing plate (701), the other end of the second spring (12) is fixedly connected to the top wall of the cavity (3), the sealing plate (701) and the inner wall of the cavity (3) are sealed, the elastic block (702) is provided on the side wall of the connecting rod (402), the inner wall of the sliding hole (13) is provided with a card slot (11), the elastic block (702) can be engaged with or disengaged from the card slot (11); the adjustment A groove (5) is provided at one end of the segment block (2) away from the installation box (1), a warning block (6) is provided inside the groove (5) and is radially slidable along the installation box (1), the connecting rod (402) extends from the bottom of the groove (5), and the warning block (6) is fixedly connected to the end of the connecting rod (402) away from the arc plate (401); a third spring (14) is provided between the warning block (6) and the bottom of the groove (5), one end of the third spring (14) is fixedly connected to the warning block (6), and the other end of the third spring (14) is fixedly connected to the bottom of the groove (5).

2. A natural gas pipeline monitoring device according to claim 1, characterized in that: An electric control button (15) is provided at the bottom of the groove (5), an electric bell (16) is provided on the outer wall of the adjustment block (2), and the electric control button (15) is connected to the electric bell (16).

3. The natural gas pipeline monitoring device according to claim 1, characterized in that: The installation box (1) can be detachably installed at the connection of the conveying pipeline. The installation box (1) includes a plurality of sub-boxes (101) and a connecting mechanism (102). The plurality of sub-boxes (101) correspond to the plurality of regulating blocks (2) on a one-to-one basis. The plurality of sub-boxes (101) are distributed along the circumference of the pipeline. There are a plurality of connecting mechanisms (102), and a connecting mechanism (102) is provided between every two sub-boxes (101).

4. A monitoring device for a natural gas transmission pipeline according to claim 3, characterized in that: The connecting mechanism (102) comprises a connecting plate (1021) and a connecting bolt (1022); the connecting plate (1021) is arranged on the outer wall of the sub-box (101); and the connecting bolt (1022) is threadedly inserted into the connecting plate (1021).

5. A monitoring device for a natural gas transmission pipeline according to claim 4, characterized in that: The connecting plate (1021) extends radially along the installation box (1) to the interior of the installation box (1) and abuts against the outer wall of the pipeline.

6. A monitoring device for a natural gas transmission pipeline according to claim 1, characterized in that : The outer circumferential wall of the warning block (6) is provided with a marking layer.

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