Natural gas pipeline safety nondestructive testing device
By designing a non-destructive testing device for natural gas pipelines that includes a testing mechanism, the problem of the inability to test the inner wall of natural gas pipelines in existing technologies has been solved. This device enables the testing of the inner wall and the removal of impurities, ensuring the safety and usage standards of natural gas pipelines.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NORTHWEST BRANCH OF NATIONAL PETROLEUM & NATURAL GAS PIPELINE NETWORK GROUP CO LTD
- Filing Date
- 2025-05-08
- Publication Date
- 2026-04-21
AI Technical Summary
Existing detection devices can only inspect the outer surface of natural gas pipelines and cannot inspect the inner wall, resulting in impurities remaining and affecting safety.
A non-destructive testing device for natural gas pipelines was designed, comprising a testing mechanism that utilizes components such as an electric multi-section telescopic rod, scraper, and brush ring to inspect and clean the inner wall of the pipeline.
It enables effective detection and impurity removal of the pipeline inner wall, ensuring the safety and usage standards of natural gas pipelines, and improving the practicality and applicability of the device.
Smart Images

Figure CN224152453U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipeline inspection technology, and more specifically, to a non-destructive testing device for natural gas pipeline safety. Background Technology
[0002] Natural gas refers to all gases that exist naturally in nature, including gases formed by various natural processes in the atmosphere, hydrosphere, and lithosphere (including oilfield gas, gas field gas, mud volcano gas, coalbed methane, and biogenic gas, etc.). Natural gas pipelines are used to transport natural gas. Natural gas pipelines are pipelines that transport natural gas (including associated gas produced from oil fields) from extraction sites or processing plants to urban gas distribution centers or industrial users. They are also called gas transmission pipelines. In order to ensure the safety of natural gas pipelines during use, detection devices are generally used to inspect natural gas pipelines.
[0003] However, existing detection devices can generally only inspect the exterior of natural gas pipelines and cannot inspect the inner walls. As a result, natural gas pipelines that have been inspected by the detection devices are very prone to having impurities remaining on the inner walls, which affects the safe use of the natural gas pipelines. Utility Model Content
[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a non-destructive testing device for natural gas pipelines. By setting up a testing mechanism, the device can test the inner wall of the pipeline body, thereby solving the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a non-destructive testing device for natural gas pipelines, comprising a base plate, two support plates on the top of the base plate, each support plate having a through hole, a placement plate between the two support plates, a pipeline body on the top of the placement plate, a positioning plate on the top of the pipeline body, a hydraulic rod on the top of the positioning plate, a fixing plate on one side of one of the support plates, and a testing mechanism on one side of the fixing plate.
[0006] In a preferred embodiment, the detection mechanism includes an electrically operated multi-section telescopic rod, one end of which is provided with a mounting cylinder, and a motor is provided inside the mounting cylinder.
[0007] In a preferred embodiment, the motor output end is provided with a scraper, and an annular groove is provided on one side of the scraper. A slip ring is provided inside the annular groove, and one side of the slip ring is connected to one side of the mounting cylinder.
[0008] In a preferred embodiment, a first connecting rod is provided on one side of the scraper, a brush ring is provided at one end of the first connecting rod, and a plurality of second connecting rods are provided inside the brush ring.
[0009] In a preferred embodiment, a mounting block is provided between a plurality of second connecting rods, one side of the mounting block is connected to one end of a first connecting rod, and a detector is provided on the other side of the mounting block.
[0010] In a preferred embodiment, the two support plates are provided with a top plate at their tops, and the bottom center line of the top plate is connected to the top of the hydraulic rod.
[0011] The technical effects and advantages of this utility model are as follows:
[0012] By setting up a detection mechanism, the pipeline body can be inspected for residual impurities on its inner wall. Pipelines that pass the inspection and meet the standards will not have any residual impurities affecting the safety of natural gas transportation during use. The well-designed detection mechanism allows for simultaneous inspection of the pipeline's inner wall by a multi-section electric telescopic rod that moves scrapers and brushes, while a motor drives the scrapers and brush rings to rotate and clean the inner wall. This ensures that pipelines that do not meet the standards can have their residual impurities removed after inspection, thus ensuring that the pipeline meets the usage standards. This reasonable design significantly improves the practicality and applicability of the device. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0014] Figure 2 This is a cross-sectional structural diagram of the present invention.
[0015] Figure 3 This is a schematic diagram of the detection mechanism structure of this utility model.
[0016] Figure 4 This is a schematic diagram of the testing mechanism of this utility model when the electric multi-section telescopic rod is not installed.
[0017] The attached diagram is labeled as follows: 1. Base plate; 2. Support plate; 3. Placement plate; 4. Pipe body; 5. Positioning plate; 6. Hydraulic rod; 7. Fixing plate; 8. Electric multi-section telescopic rod; 9. Mounting cylinder; 10. Motor; 11. Scraper; 12. Slip ring; 13. First connecting rod; 14. Brush ring; 15. Second connecting rod; 16. Mounting block; 17. Detector; 18. Top plate. Detailed Implementation
[0018] 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.
[0019] As attached Figure 1-4 The device shown is a non-destructive testing device for natural gas pipelines, comprising a base plate 1, two support plates 2 on the top of the base plate 1, each with a through hole, and a placement plate 3 between the two support plates 2. A pipeline body 4 is placed on top of the placement plate 3. The placement plate 3 provides a position for the pipeline body 4 between the two support plates 2. A protective pad can be added to the top of the placement plate 3 during use to prevent direct contact between the placement plate 3 and the pipeline body 4, thus avoiding damage. The through holes in the support plates 2 allow the pipeline body 4 to pass through and be placed on top of the placement plate 3. A positioning plate 5 is located on top of the pipeline body 4, and a hydraulic rod 6 is located on top of the positioning plate 5. The hydraulic rod 6 moves the positioning plate 5 downward to contact the pipeline body 4, restricting its position. A protective pad can be added to the bottom of the positioning plate 5 during use to prevent direct contact between the positioning plate 5 and the pipeline body 4, thus avoiding damage. A fixing plate 7 is located on one side of one of the support plates 2, and a testing mechanism is located on one side of the fixing plate 7.
[0020] As attached Figure 1 , 2As shown in Figures 3 and 4, the detection mechanism includes an electric multi-section telescopic rod 8. One end of the electric multi-section telescopic rod 8 is equipped with an installation cylinder 9. A motor 10 is installed inside the installation cylinder 9. The addition of the multi-section electric telescopic rod drives the installation cylinder 9 to move horizontally. The addition of the installation cylinder 9 also houses the motor 10. A scraper 11 is installed at the output end of the motor 10. An annular groove is formed on one side of the scraper 11, and a slip ring 12 is installed inside the annular groove. One side of the slip ring 12 is connected to one side of the installation cylinder 9. The scraper 11 removes impurities from the pipe body 4. The annular groove on one side of the scraper 11 and the slip ring 12 inside the annular groove allow the motor 10 to smoothly drive the scraper 11 to rotate. A first connecting rod 13 is installed on one side of the scraper 11. A brush ring 14 is provided at one end of the connecting rod 13. Several second connecting rods 15 are provided inside the brush ring 14. An installation block 16 is provided between the several second connecting rods 15. One side of the installation block 16 is connected to one end of the first connecting rod 13, and a detector 17 is provided on the other side of the installation block 16. The installation block 16 is connected to the scraper 11 by the addition of the first connecting rod 13, so that the scraper 11 can drive the installation block 16 to rotate when it rotates. The brush ring 14 is connected to the installation block 16 by the addition of the second connecting rods 15, so that the installation block 16 drives the brush ring 14 to rotate synchronously when it rotates. The detector 17 is provided on one side of the installation block 16, so that the detector 17 can rotate inside the pipe body 4 to detect the inner wall of the pipe body 4.
[0021] As attached Figure 1 , 2 As shown, a top plate 18 is provided on the top of both support plates 2. The bottom center line of the top plate 18 is connected to the top of the hydraulic rod 6. The addition of the top plate 18 provides a position for installing and fixing the hydraulic rod 6.
[0022] The working principle of this utility model is as follows: When using this device to inspect the inner wall of the pipe body 4, the pipe body 4 is first inserted through the through hole in the support plate 2 on the left side. After the pipe body 4 is inserted, it is placed on top of the placement plate 3. Then, the hydraulic rod 6 is activated to move the positioning plate 5 downward to contact the pipe body 4 and restrict the position of the pipe body 4. After the pipe body 4 is restricted, the inspection mechanism can be used to inspect the pipe body 4. During the inspection, the electric multi-section telescopic rod 8 and the motor 10 are activated. The activation of the electric multi-section telescopic rod 8 drives the brush ring 14, scraper 11 and detector 17 to move horizontally inside the pipe body 4. The activation of the motor 10 drives the brush plate, scraper 11 and detector 17 to rotate inside the pipe body 4. Through the horizontal movement and rotation of the brush ring 14, scraper 11 and detector 17 inside the pipe body 4, the inner wall of the pipe body 4 is inspected, and impurities located inside the pipe body 4 are cleaned out. At this time, the inspection of the pipe body 4 is completed.
[0023] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0024] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
[0025] Finally: The above description is only a preferred embodiment of the present utility model and is 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 should be included within the protection scope of the present utility model.
Claims
1. A natural gas pipeline safety non-destructive testing device comprising a base plate (1), characterized in that: The bottom plate (1) is provided with two support plates (2) on the top. Both support plates (2) have through holes. A placement plate (3) is provided between the two support plates (2). A pipe body (4) is provided on the top of the placement plate (3). A positioning plate (5) is provided on the top of the pipe body (4). A hydraulic rod (6) is provided on the top of the positioning plate (5). A fixing plate (7) is provided on one side of one of the support plates (2). A detection mechanism is provided on one side of the fixing plate (7).
2. A natural gas pipeline safety non-destructive testing device according to claim 1, characterized in that: The detection mechanism includes an electric multi-section telescopic rod (8), one end of which is provided with an installation cylinder (9), and a motor (10) is provided inside the installation cylinder (9).
3. A natural gas pipeline safety non-destructive testing device according to claim 2, wherein: The output end of the motor (10) is provided with a scraper (11), and an annular groove is provided on one side of the scraper (11). A slip ring (12) is provided inside the annular groove, and one side of the slip ring (12) is connected to one side of the mounting cylinder (9).
4. A natural gas pipeline safety non-destructive testing device according to claim 3, wherein: A first connecting rod (13) is provided on one side of the scraper (11), and a brush ring (14) is provided at one end of the first connecting rod (13). Several second connecting rods (15) are provided inside the brush ring (14).
5. A natural gas pipeline safety non-destructive testing device according to claim 4, wherein: A mounting block (16) is provided between several second connecting rods (15). One side of the mounting block (16) is connected to one end of the first connecting rod (13), and a detector (17) is provided on the other side of the mounting block (16).
6. A natural gas pipeline safety non-destructive testing device according to claim 1, wherein: The two support plates (2) are provided with a top plate (18) on their tops, and the bottom center line of the top plate (18) is connected to the top of the hydraulic rod (6).