Natural gas pipeline leakage detection device

Abstract

The utility model relates to the technical field of natural gas pipeline damage detection, and provides a natural gas pipeline leakage detection device which comprises an upper shell and a lower shell. Protective layers are fixedly mounted outside the upper shell and the lower shell; an inflation structure is fixedly mounted at the top of the protective layer and comprises a first air pump, a second air pump, a first output pipe, a second output pipe, an expansion ring and a connecting pipe; a detection structure is fixedly mounted in the protective layer, and the detection structure comprises an air port and a pressure gauge; fastening structures are fixedly mounted on the outer surfaces of the upper shell and the lower shell, and each fastening structure comprises a fixing plate, a bolt and a nut. The natural gas pipeline leakage detection device can be lifted at will through the handle, so that the natural gas pipeline leakage detection device can detect an installed pipeline, the expansion ring can be inflated through the first air pump and the first output pipe, then the internal space of the detection device is sealed through the expansion ring, and the closed space can be inflated through the second air pump and the second output pipe. And then testing whether the pipeline is damaged.

Description

Technical Field

[0001] This utility model belongs to the field of natural gas pipeline damage detection technology, specifically relating to a device for detecting leaks in natural gas pipelines. Background Technology

[0002] Pipelines are tubular or hollow cylinders, typically but not necessarily circular in cross-section, primarily used to transport flowable substances: liquids and gases (fluids), slurries, powders, and large quantities of small solids. They can also be used in structural applications. Currently, in the production process of natural gas pipelines, to ensure their sealing performance upon commissioning, it is usually necessary to inspect their outer walls for damage. Currently, the detection of damage to natural gas pipelines is typically done through manual inspection or by manually moving inspection equipment along the outer wall of the pipeline.

[0003] However, the following problems were found in the implementation of the relevant technologies: Pipelines are usually placed statically, and it is necessary to move the pipeline back and forth to change the inspection end face. This inspection method is labor-intensive and resource-intensive, and it is difficult to detect pipeline damage in a timely manner, resulting in low inspection efficiency and accuracy. Moreover, it is time-consuming and labor-intensive to disassemble some installed pipelines for inspection. Existing natural gas pipeline leak detection devices cannot effectively inspect installed pipelines of different sizes.

[0004] Therefore, a natural gas pipeline leak detection device is proposed to solve the above problems. Utility Model Content

[0005] This invention proposes a natural gas pipeline leak detection device, which solves the problem that existing natural gas pipeline leak detection devices in related technologies cannot effectively detect pipelines of different sizes after installation.

[0006] The technical solution of this utility model is as follows: A device for detecting leaks in natural gas pipelines, comprising: an upper shell and a lower shell;

[0007] The upper and lower shells are fixedly fitted with protective layers on their exteriors;

[0008] An inflation structure is fixedly installed on the top of the protective layer. The inflation structure includes a No. 1 air pump, a No. 2 air pump, a No. 1 output pipe, a No. 2 output pipe, an expansion ring, and a connecting pipe.

[0009] A detection structure is fixedly installed inside the protective layer, and the detection structure includes an air port and a pressure gauge.

[0010] The outer surfaces of the upper and lower shells are fixedly fitted with fastening structures, which include fixing plates, bolts, and nuts;

[0011] Sealing strips are fixedly installed at the bottom of the upper shell and the top of the lower shell.

[0012] Preferably, the No. 1 air pump is fixedly installed on the top of the protective layer, the No. 2 air pump is fixedly installed on the top of the protective layer, the No. 1 output pipe is fixedly installed on the output end of the No. 1 air pump, the No. 2 output pipe is fixedly installed on the output end of the No. 2 air pump, the expansion ring is fixedly installed on the inner wall of the upper shell and the lower shell, and the connecting pipe is set on one side of the expansion ring.

[0013] Preferably, the air inlet is located on the inner wall of the upper shell, the pressure gauge is fixedly installed inside the protective layer, and the air inlet is connected to the pressure gauge.

[0014] Preferably, the fixing plate is fixedly installed on the outer surface of the upper shell and the lower shell, the bolt is slidably disposed inside the fixing plate, and the nut is threadedly installed on the outside of the bolt.

[0015] Preferably, hinges are fixedly installed on the outer surfaces of the upper and lower shells, and a handle is fixedly installed on the front side of the protective layer.

[0016] Preferably, the expansion ring is broken at the opening of the upper and lower shells, and the two ends of the broken expansion ring are convex and concave respectively.

[0017] The working principle and beneficial effects of this utility model are as follows: The natural gas pipeline leak detection device can be lifted at will by the handle, enabling it to detect the installed pipeline. An expansion ring can be inflated via a first air pump and a first output pipe, thus sealing the internal space of the detection device. A second air pump and a second output pipe can inflate the sealed space, allowing for testing of pipeline damage. By connecting the air port to a pressure gauge, pressure changes in the sealed space inside the detection device can be detected by the pressure gauge, thus determining whether the pipeline is damaged. By separating the two ends of the expansion ring, one end being convex and the other concave, the expansion ring can be inflated, resulting in a tighter seal. The connecting pipe allows the two expansion valves to expand, further sealing the detection device. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model;

[0020] Figure 2 The present utility model proposes Figure 1 A magnified view of part A in the image;

[0021] Figure 3 This is a cross-sectional view of the present invention;

[0022] Figure 4The present utility model proposes Figure 3 A magnified view of part B in the image;

[0023] Figure 5 This is the left view of the present invention.

[0024] In the diagram: 1. Upper shell; 2. Lower shell;

[0025] 3. Protective layer;

[0026] 4. Inflation structure; 41. Air pump No. 1; 42. Air pump No. 2; 43. Output pipe No. 1; 44. Output pipe No. 2; 45. Expansion ring; 46. Connecting pipe;

[0027] 5. Detection structure; 51. Air inlet; 52. Pressure gauge;

[0028] 6. Fastening structure; 61. Fixing plate; 62. Bolt; 63. Nut;

[0029] 7. Sealing strip; 8. Hinge; 9. Handle. Detailed Implementation

[0030] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0031] Implementation

[0032] Please see Figure 1 -5, a device for detecting leaks in natural gas pipelines, comprising: an upper shell 1 and a lower shell 2;

[0033] The upper shell 1 and the lower shell 2 are fixedly installed with protective layers 3 on their exteriors;

[0034] An inflation structure 4 is fixedly installed on the top of the protective layer 3. The inflation structure 4 includes a first air pump 41, a second air pump 42, a first output pipe 43, a second output pipe 44, an expansion ring 45, and a connecting pipe 46.

[0035] A detection structure 5 is fixedly installed inside the protective layer 3. The detection structure 5 includes an air port 51 and a pressure gauge 52.

[0036] Fastening structure 6 is fixedly installed on the outer surfaces of the upper shell 1 and the lower shell 2. The fastening structure 6 includes a fixing plate 61, bolts 62 and nuts 63.

[0037] Sealing strips 7 are fixedly installed on the bottom of the upper shell 1 and the top of the lower shell 2.

[0038] The technical solution provided in this embodiment is as follows: When using the device, firstly, pull the handle 9 to open the upper shell 1 and lower shell 2 through the hinge 8. Then, the upper shell 1 and lower shell 2 cover the pipe to be tested. Then, the upper shell 1 and lower shell 2 are closed through the fixing plate 61 by the bolt 62 and nut 63. Then, the gap between the upper shell 1 and lower shell 2 is sealed by the sealing strip 7. Then, start the first air pump 41 to pump air into the interior of the expansion ring 45 through the first output pipe 43. Then, the other expansion ring 45 is also expanded through the connecting pipe 46, so that the two expansion rings 45 and the sealing strip 7 seal the sealed space between the upper shell 1 and lower shell 2. Then, start the second air pump 42 to pump air into the sealed space between the upper shell 1 and lower shell 2 through the second output pipe 44. Then, the pressure inside the space is detected by the pressure gauge 52 through the air port 51 and the reading is displayed. When the pressure reaches the required level, the first air pump 41 and the second air pump 42 are turned off. Then, the change of the pressure gauge 52 is observed to detect whether the pipe is damaged.

[0039] Furthermore, the No. 1 air pump 41 is fixedly installed on the top of the protective layer 3, the No. 2 air pump 42 is fixedly installed on the top of the protective layer 3, the No. 1 output pipe 43 is fixedly installed on the output end of the No. 1 air pump 41, the No. 2 output pipe 44 is fixedly installed on the output end of the No. 2 air pump 42, the expansion ring 45 is fixedly installed on the inner wall of the upper shell 1 and the lower shell 2, and the connecting pipe 46 is set on one side of the expansion ring 45.

[0040] Specifically, the expansion ring 45 can be inflated by the first air pump 41 and the first output pipe 43, thereby sealing the internal space of the detection device. The sealed space can be inflated by the second air pump 42 and the second output pipe 44, and then the pipe can be tested for damage.

[0041] Furthermore, the air port 51 is opened on the inner wall of the upper shell 1, and the pressure gauge 52 is fixedly installed inside the protective layer 3, and the air port 51 is connected to the pressure gauge 52.

[0042] Specifically, by connecting the air port 51 to the pressure gauge 52, the pressure change in the sealed space inside the detection device can be detected by the pressure gauge 52, and then the pressure gauge 52 can be used to determine whether the pipeline is damaged.

[0043] Furthermore, the fixing plate 61 is fixedly installed on the outer surface of the upper shell 1 and the lower shell 2, the bolt 62 is slidably disposed inside the fixing plate 61, and the nut 63 is threadedly installed on the outside of the bolt 62.

[0044] Specifically, by using the nut 63 and the bolt 62, the two fixing plates 61 can be brought closer together, thereby closing the upper shell 1 and the lower shell 2, and then sealing the internal space of the upper shell 1 and the lower shell 2 by the sealing strip 7.

[0045] Furthermore, hinges 8 are fixedly installed on the outer surfaces of the upper shell 1 and the lower shell 2, and handles 9 are fixedly installed on the front of the protective layer 3.

[0046] Specifically, the upper shell 1 and lower shell 2 can be opened and closed at will via the handle 9 and hinge 8, thereby allowing the detection device to cover the pipe to be inspected for damage detection.

[0047] Furthermore, the expansion ring 45 is broken at the opening of the upper shell 1 and the lower shell 2, and the two ends of the broken expansion ring 45 are convex and concave respectively.

[0048] Specifically, by breaking the two ends of the expansion ring 45, with one end forming a "convex" shape and the other end forming a "concave" shape, the expansion ring 45 can be sealed more tightly when it is inflated.

[0049] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A device for detecting leaks in natural gas pipelines, characterized in that, include: Upper shell (1) and lower shell (2); The upper shell (1) and the lower shell (2) are fixedly installed with protective layers (3); An inflation structure (4) is fixedly installed on the top of the protective layer (3). The inflation structure (4) includes a first air pump (41), a second air pump (42), a first output pipe (43), a second output pipe (44), an expansion ring (45), and a connecting pipe (46). The protective layer (3) is fixedly installed with a detection structure (5), which includes an air port (51) and a pressure gauge (52); The outer surfaces of the upper shell (1) and the lower shell (2) are fixedly installed with fastening structures (6), which include a fixing plate (61), bolts (62) and nuts (63); Sealing strips (7) are fixedly installed on the bottom of the upper shell (1) and the top of the lower shell (2).

2. The natural gas pipeline leak detection device according to claim 1, characterized in that: The first air pump (41) is fixedly installed on the top of the protective layer (3), the second air pump (42) is fixedly installed on the top of the protective layer (3), the first output pipe (43) is fixedly installed at the output end of the first air pump (41), the second output pipe (44) is fixedly installed at the output end of the second air pump (42), the expansion ring (45) is fixedly installed on the inner wall of the upper shell (1) and the lower shell (2), and the connecting pipe (46) is set on one side of the expansion ring (45).

3. The natural gas pipeline leak detection device according to claim 1, characterized in that: The air inlet (51) is located on the inner wall of the upper shell (1), and the pressure gauge (52) is fixedly installed inside the protective layer (3), with the air inlet (51) connected to the pressure gauge (52).

4. The natural gas pipeline leak detection device according to claim 1, characterized in that: The fixing plate (61) is fixedly installed on the outer surface of the upper shell (1) and the lower shell (2), the bolt (62) is slidably disposed inside the fixing plate (61), and the nut (63) is threadedly installed on the outside of the bolt (62).

5. A natural gas pipeline leak detection device according to claim 1, characterized in that: Hinges (8) are fixedly installed on the outer surfaces of the upper shell (1) and the lower shell (2), and a handle (9) is fixedly installed on the front of the protective layer (3).

6. A natural gas pipeline leak detection device according to claim 1, characterized in that: The expansion ring (45) is broken at the opening of the upper shell (1) and the lower shell (2), and the two ends of the broken expansion ring (45) are convex and concave respectively.

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