Leakage detection device for natural gas transportation

Abstract

The utility model relates to the technical field of natural gas leakage detection, and discloses a leakage detection device for natural gas transportation, which is characterized in that the right end of a device shell is fixedly connected with a connecting pipe, the right end of the connecting pipe is connected with an adjusting ring through a fixing assembly, and the left end of the inner wall of the device shell is fixedly connected with a first through pipe; the left end of the first through pipe is connected with a fixing ring through a mounting assembly, a sliding plate is arranged on the inner wall of the first through pipe, a ventilation column is fixedly connected to the middle of the right end of the sliding plate, the front side and the rear side of the right end of the sliding plate penetrate through the right end of the first through pipe and are fixedly connected with a connecting rod, and the right end of the connecting rod is fixedly connected with a shifting piece. And the right end of the first through pipe is fixedly connected with a second through pipe. According to the utility model, pipelines with different diameters can be fixed by the device, so that the device is more flexible to use, and the connected air bag can be quickly dismounted and mounted when leakage is detected.

Description

Technical Field

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

[0002] In the natural gas transmission system, the leak detection device is a very important safety device. It can help to timely detect and locate the leak in the pipeline and take appropriate measures to deal with it, so as to protect the life safety of personnel and prevent environmental pollution, so that the staff can use the leak detection device to ensure the normal use of the pipeline and the safe transmission of natural gas.

[0003] When using leak detection devices for natural gas transmission, the installation of traditional leak detection devices usually requires professional technology and complex operations, especially for large-scale natural gas transmission systems. The size and diameter of each pipeline are different, and the installation structure is usually fixed and not easy to adjust, so other tools are needed to assist in installation, which reduces installation efficiency.

[0004] Therefore, in view of the problems that the existing leakage detection devices are not easy to adjust to adapt to the installation and the removal efficiency of the airbag of the device is low, a leakage detection device for natural gas transmission that solves the above problems is needed. Utility Model Content

[0005] In order to solve the problems in the prior art that the leakage detection device is not easy to adjust to adapt to the installation and the efficiency of removing the airbag of the device is low, the present application provides a leakage detection device for natural gas transportation.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A leakage detection device for natural gas transmission, comprising a device shell, the right end of the device shell is fixedly connected to a connecting pipe, the right end of the connecting pipe is rotatably connected to a fixing assembly, the left end of the inner wall of the device shell is fixedly connected to a first through-tube, the left end of the first through-tube is fixedly connected to a mounting assembly, a sliding plate is provided on the inner wall of the first through-tube, a breathable column is fixedly connected to the middle of the right end of the sliding plate, the front and rear sides of the right end of the sliding plate penetrate the right end of the first through-tube and are fixedly connected to a connecting rod, the right end of the connecting rod is fixedly connected to a paddle, the right end of the first through-tube is fixedly connected to a second through-tube, the top end of the second through-tube is fixedly connected to and penetrates an air pressure tube, a lightweight ball is provided on the inner wall of the air pressure tube and fits with it; the fixing assembly comprises an adjusting ring, the left end of the adjusting ring is rotatably connected to the right end of the connecting pipe, and the left end of the adjusting ring is fixedly connected It is connected to an internal gear ring, and the inner diameter of the internal gear ring is meshed with a plurality of transmission gears, the left end of the transmission gear is fixedly connected to a double-thread screw, and the left and right ends of the double-thread screw are threadedly connected to a transfer block, and the relative end of the transfer block is rotatably connected to a connecting plate, and the relative end of the connecting plate is rotatably connected to a support plate; the mounting assembly includes a fixing ring, the right end of the fixing ring is fixedly connected to the left end of the first through tube, the front and rear ends of the inner wall of the fixing ring are provided with L-shaped grooves, and the front and rear ends of the outer wall of the fixing ring are fixedly connected to the first fixing tube and penetrated by the opposite end corresponding to the L-shaped groove, the opposite end of the first fixing tube is slidably connected to a pressing block, and an airbag is provided at the left end of the fixing ring, the front and rear ends of the outer wall of the airbag are fixedly connected to the second fixing tube, and the relative end of the second fixing tube is slidably connected to an extrusion block.

[0008] As a further improvement of the utility model, a first spring is provided on the outer wall of the left end of the connecting rod, and the left end of the first spring is fixedly connected to the right end of the sliding plate.

[0009] As a further improvement of the utility model, the outer wall of the inner gear ring is rotatably connected to the inner wall of the right end of the connecting pipe, and the left end of the double-thread screw is rotatably connected to the right end of the device housing.

[0010] As a further improvement of the utility model, the end opposite to the outer wall of the adapter block is slidably connected to the inner wall of the connecting pipe.

[0011] As a further improvement of the utility model, the extrusion block is provided with a second spring at one opposite end, and the second spring is fixedly connected at one opposite end to the front and rear ends of the outer wall of the airbag respectively.

[0012] As a further improvement of the present invention, the opposite end of the second fixing pipe can be detachably connected to the opposite end of the L-shaped groove.

[0013] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0014] 1. In the utility model, by using the combination of the adjusting ring, the internal gear ring, the transmission gear, the double-thread screw, the adapter block, the connecting plate and the supporting plate, the device can fix the pipes of different diameters, which makes the device more flexible in use, reduces the burden of using tools for auxiliary installation, improves installation efficiency, and speeds up the leak detection work.

[0015] 2. In the utility model, by using a combination of a fixing ring, an airbag, an L-shaped groove, a first fixing tube, a pressing block, a second fixing tube, an extrusion block and a second spring, the connected airbag can be quickly disassembled and installed when detecting whether there is a leak, thereby increasing the speed of replacing the used airbag when detecting the pipeline and improving the efficiency of the device in detecting whether the pipeline is leaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an axonometric diagram of a leakage detection device for natural gas transmission proposed by the utility model;

[0017] Figure 2 A half-section diagram of the device housing of a leakage detection device for natural gas transmission proposed by the utility model;

[0018] Figure 3 A half-section diagram of a second through pipe of a natural gas transmission leakage detection device proposed by the utility model;

[0019] Figure 4 A half-section diagram of a first through pipe of a natural gas transmission leakage detection device proposed by the utility model;

[0020] Figure 5 This is a schematic diagram of the connecting pipe structure of a leakage detection device for natural gas transportation proposed by the utility model;

[0021] Figure 6 A half-section diagram of an adjustment ring of a leakage detection device for natural gas transmission proposed by the utility model;

[0022] Figure 7 This is a cross-sectional view of a fixing ring of a leakage detection device for natural gas transportation proposed by the utility model;

[0023] Figure 8 This is a schematic diagram of the L-shaped slot structure of a leakage detection device for natural gas transportation proposed by the utility model;

[0024] Fig. 9 This is a half-section diagram of an airbag of a leakage detection device for natural gas transportation proposed by the utility model.

[0025] Legend:

[0026] 1. Device housing; 2. Connecting pipe; 3. First through pipe; 4. Sliding plate; 5. Breathable column; 6. Connecting rod; 7. First spring; 8. Paddle; 9. Second through pipe; 10. Air pressure pipe; 11. Light ball; 12. Adjusting ring; 13. Internal gear ring; 14. Transmission gear; 15. Double-thread screw; 16. Adapter block; 17. Connecting plate; 18. Support plate; 19. Fixed ring; 20. Air bag; 21. L-shaped groove; 22. First fixed pipe; 23. Pressing block; 24. Second fixed pipe; 25. Extrusion block; 26. Second spring. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the description of this application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0031] In addition, if the terms "horizontal" or "vertical" appear in the description of this application, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] Embodiment 1: A leakage detection device for natural gas transmission, comprising a device housing 1, a connecting pipe 2 is fixedly connected to the right end of the device housing 1, a fixing assembly is rotatably connected to the right end of the connecting pipe 2, a first through-tube 3 is fixedly connected to the left end of the inner wall of the device housing 1, a mounting assembly is fixedly connected to the left end of the first through-tube 3, a sliding plate 4 is provided on the inner wall of the first through-tube 3, a ventilating column 5 is fixedly connected to the middle of the right end of the sliding plate 4, a connecting rod 6 is passed through the right end of the first through-tube 3 on both sides of the right end of the sliding plate 4, and a paddle 8 is fixedly connected to the right end of the connecting rod 6, and a first through-tube 3 is fixedly connected to the right end of the first through-tube 3. A second through pipe 9 is fixedly connected, and an air pressure pipe 10 is fixedly connected to the top of the second through pipe 9 and passes through it. A lightweight ball 11 is arranged on the inner wall of the air pressure pipe 10 and fits with it. The paddle 8 is moved to drive the connecting rod 6 to move, and the groove of the air permeable column 5 passes through the first through pipe 3 and through the second through pipe 9 to discharge the gas. When the natural gas pipeline is sealed, the air pressure in the second through pipe 9 is high, so that the lightweight ball 11 in the air pressure pipe 10 with a transparent outer wall rises steadily. When the natural gas pipeline leaks, the air pressure in the second through pipe 9 is too low, and the lightweight ball 11 is unstable or unable to rise when it rises.

[0034] Embodiment 2: The fixing assembly includes an adjusting ring 12, the left end of which is rotatably connected to the right end of the connecting pipe 2, the left end of the adjusting ring 12 is fixedly connected to an internal gear ring 13, the inner diameter of the internal gear ring 13 is meshedly connected to a plurality of transmission gears 14, the left end of the transmission gear 14 is fixedly connected to a double-thread screw 15, the left and right ends of the double-thread screw 15 are threadedly connected to adapter blocks 16, the adapter blocks 16 are rotatably connected to a connecting plate 17 at one opposite end, and the connecting plate 17 is rotatably connected to a supporting plate 18 at one opposite end. The adjusting ring 12 is rotated to drive the internal gear ring 13 to rotate, the transmission gear 14 drives the double-thread screw 15 to rotate, the double-thread screw 15 drives the adapter blocks 16 on both sides to move inward, and the adapter blocks 16 drive the connecting plates 17 to make the support plates 18 support the pipe in the connecting pipe 2, thereby facilitating fixation, allowing the device to fix pipes of different diameters, making the device more flexible when used, reducing the burden of using tools for auxiliary installation, and improving installation efficiency.

[0035] Embodiment 3: The mounting assembly includes a fixing ring 19, the right end of the fixing ring 19 is fixedly connected to the left end of the first through pipe 3, the inner wall of the fixing ring 19 is provided with L-shaped grooves 21 at both ends, the outer wall of the fixing ring 19 is fixedly connected with a first fixing tube 22 at both ends of the front and rear ends corresponding to the L-shaped groove 21 and penetrated, the first fixing tube 22 is slidably connected with a pressing block 23 at the opposite end, the left end of the fixing ring 19 is provided with an air bag 20, the outer wall of the air bag 20 is fixedly connected with a second fixing tube 24 at both ends, and the second fixing tube 24 is slidably connected with an extrusion block 25 at the opposite end, When conducting detection, the second fixed tube 24 at the airbag 20 is pressed against the L-shaped groove 21 and rotated, so that the second spring 26 allows the extrusion block 25 to be stuck in the first fixed tube 22 and lift the pressing block 23 through elastic force. When the pressing block 23 is pressed, the extrusion block 25 can be contracted and the airbag 20 can be rotated in the opposite direction along the L-shaped groove 21, so that the connected airbag 20 can be quickly disassembled and installed when detecting whether there is a leak, thereby improving the efficiency of replacing the used airbag 20 when detecting the pipeline, and improving the efficiency of the device in detecting whether the pipeline is leaking. When the device is installed in the pipeline.

[0036] like Figure 6-Figure 9 As shown, the outer wall of the left end of the connecting rod 6 is provided with a first spring 7, and the left end of the first spring 7 is fixedly connected to the right end of the sliding plate 4. The sliding plate 4 is reset after moving by the first spring 7. The outer wall of the inner gear ring 13 is rotatably connected to the inner wall of the right end of the connecting tube 2, so as to improve the stability of the inner gear ring 13 when rotating. The left end of the double-thread screw 15 is rotatably connected to the right end of the device housing 1, so as to provide the support point required for the double-thread screw 15 to rotate. The opposite end of the outer wall of the adapter block 16 is slidably connected to the inner wall of the connecting tube 2, so as to drive the adapter block 16 to move when the double-thread screw 15 rotates. The opposite end of the extrusion block 25 is provided with a second spring 26, and the opposite end of the second spring 26 is respectively fixedly connected to the front and rear ends of the outer wall of the airbag 20, so that the second spring 26 allows the extrusion block 25 to pop out. The opposite end of the second fixed tube 24 can be detachably connected to the opposite end of the L-shaped groove 21, so as to facilitate the installation of the airbag 20 at the fixing ring 19.

[0037] Working principle: First, when testing, the second fixed tube 24 at the airbag 20 is pressed against the L-shaped groove 21 and rotated, so that the second spring 26 can use the elastic force to make the extrusion block 25 stuck in the first fixed tube 22 and lift the pressing block 23, and when pressing the pressing block 23, the extrusion block 25 can be contracted, and the airbag 20 can be rotated in the opposite direction along the L-shaped groove 21, so that the connected airbag 20 can be quickly disassembled and installed when detecting whether there is a leak, and the replacement of the used airbag 20 when testing the pipeline is improved, and the efficiency of the device in detecting whether the pipeline is leaking is improved, and the paddle 8 is moved, so that the paddle 8 drives the connecting rod 6 to move, and the groove of the vent column 5 passes through the first through pipe 3 and through the second through pipe 9, so that the gas is discharged, and the natural gas pipeline When the inside is sealed, the air pressure in the second through pipe 9 is high, so that the lightweight ball 11 in the air pressure pipe 10 rises steadily. When the natural gas pipeline leaks, the air pressure in the second through pipe 9 is too low, and the lightweight ball 11 is unstable or unable to rise. When the device is installed in the pipeline, the adjusting ring 12 is rotated to make the adjusting ring 12 drive the inner gear ring 13 to rotate and the transmission gear 14 drives the double-thread screw 15 to rotate, so that the double-thread screw 15 drives the adapter blocks 16 on both sides to move inward, and the adapter blocks 16 drive the connecting plate 17 to make the support plate 18 connect the pipe 2 to support the pipe, so as to facilitate fixation, and allow the device to fix pipes of different diameters, so that the device is more flexible when used, reduces the burden of using tools for auxiliary installation, and improves installation efficiency.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A leakage detection device for natural gas transmission, comprising a device housing (1), characterized in that: The right end of the device housing (1) is fixedly connected to a connecting pipe (2), the right end of the connecting pipe (2) is rotatably connected to a fixing assembly, the left end of the inner wall of the device housing (1) is fixedly connected to a first through pipe (3), the left end of the first through pipe (3) is fixedly connected to a mounting assembly, a sliding plate (4) is provided on the inner wall of the first through pipe (3), a ventilating column (5) is fixedly connected to the middle of the right end of the sliding plate (4), the front and rear sides of the right end of the sliding plate (4) penetrate the right end of the first through pipe (3) and are fixedly connected to a connecting rod (6), the The right end of the connecting rod (6) is fixedly connected to a paddle (8); the right end of the first through tube (3) is fixedly connected to a second through tube (9); the top of the second through tube (9) is fixedly connected to a pneumatic tube (10) and penetrates through the second through tube (9); a light ball (11) is arranged on the inner wall of the pneumatic tube (10) and fits in; the fixing assembly comprises an adjusting ring (12); the left end of the adjusting ring (12) is rotatably connected to the right end of the connecting tube (2); the left end of the adjusting ring (12) is fixedly connected to an internal gear ring (13); the inner diameter of the internal gear ring (13) is meshed with the inner diameter of the internal gear ring (13). The first through pipe (3) is connected to the first through pipe (3), the left end of each of the transmission gears (14) is fixedly connected to a double-thread screw (15), the left and right ends of each of the double-thread screws (15) are threadedly connected to a transfer block (16), the transfer block (16) is rotatably connected to a connecting plate (17) at one end relative to the transfer block (16), and the connecting plate (17) is rotatably connected to a supporting plate (18) at one end relative to the transfer block (16); the mounting assembly includes a fixing ring (19), the right end of each of the fixing rings (19) is fixedly connected to the left end of the first through pipe (3), and the fixing ring (19) is connected to the first through pipe (3). 9) L-shaped grooves (21) are provided at both front and rear ends of the inner wall; the front and rear ends of the outer wall of the fixing ring (19) are fixedly connected to the opposite end of the L-shaped groove (21) with a first fixing tube (22) and penetrate through; the opposite end of the first fixing tube (22) is slidably connected to a pressing block (23); an air bag (20) is provided at the left end of the fixing ring (19); the front and rear ends of the outer wall of the air bag (20) are fixedly connected to the second fixing tube (24); the opposite end of the second fixing tube (24) is slidably connected to an extrusion block (25).

2. A natural gas transmission leakage detection device according to claim 1, characterized in that: The outer wall of the left end of the connecting rod (6) is provided with a first spring (7), and the left end of the first spring (7) is fixedly connected to the right end of the sliding plate (4).

3. A natural gas transmission leakage detection device according to claim 1, characterized in that: The outer wall of the inner gear ring (13) is rotatably connected to the inner wall of the right end of the connecting pipe (2), and the left end of the double-thread screw (15) is rotatably connected to the right end of the device housing (1).

4. A natural gas transmission leakage detection device according to claim 1, characterized in that: The end opposite to the outer wall of the adapter block (16) is slidably connected to the inner wall of the connecting pipe (2).

5. A natural gas transmission leakage detection device according to claim 1, characterized in that: The extrusion block (25) is provided with a second spring (26) at one opposite end, and the second spring (26) is fixedly connected to the front and rear ends of the outer wall of the air bag (20) at one opposite end.

6. A natural gas transmission leakage detection device according to claim 1, characterized in that: The opposite end of the second fixing tube (24) can be detachably connected to the opposite end of the L-shaped groove (21).

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