A buried gas pipeline leak detection device

Abstract

This utility model relates to the technical field of pipeline inspection equipment, and provides a buried gas pipeline leak detection device, including a first snap plate with one open end, a second snap plate connected below the first snap plate, blocking plates connected to both sides of the first snap plate, and a transmission component for driving the detection device along the pipeline. The first snap plate, the second snap plate, and the blocking plates form a sealed space covering the outside of the pipeline. The second snap plate is provided with a support component for abutting against the pipeline. Along the length of the first snap plate, gas concentration sensors are arranged in an array. A battery is provided on the first snap plate, and a GPS positioning module is installed inside the battery. The buried gas pipeline leak detection device of this utility model can quickly and accurately detect whether a section of pipeline is leaking by setting up a sealed space. It can automatically detect a distance underground by burying the pipeline, improving detection efficiency and achieving accurate positioning, and is suitable for complex geological environments.

Description

Technical Field

[0001] This utility model relates to the technical field of gas pipeline detection equipment, and in particular to a buried gas pipeline leak detection device. Background Technology

[0002] As oil and gas pipelines become increasingly long, pipeline safety incidents occur more frequently. Most of these incidents are caused by gas leaks, primarily due to pipeline aging, neglect, and natural corrosion, leading to fatigue cracks, creep, and other defects. Undetected gas leaks can cause explosions.

[0003] Existing buried pipelines are generally deeply underground. Traditional manual inspections can only cover 2 kilometers of mountainous terrain per hour, with blind spots reaching as high as 40%. Daily manual inspections of 20 kilometers are inefficient. Furthermore, the deviation between existing pipeline marker posts and their actual locations can reach tens of meters, often delaying emergency repairs. Laser ultrasonic technology is insufficient for quantitative characterization of pipeline defects and cannot visualize these defects. Achieving these capabilities would require additional detection devices such as robots, electromagnetic ultrasonic sensors, and image sensors, increasing inspection costs. Utility Model Content

[0004] In view of this, the present invention aims to provide a buried gas pipeline leak detection device that can automatically travel along the pipeline to detect leaks segment by segment, thereby improving detection efficiency and positioning accuracy.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A buried gas pipeline leak detection device includes a first buckle plate with an opening at one end, a second buckle plate connected below the first buckle plate, plug plates connected to both sides of the first buckle plate, and a transmission assembly for driving the detection device to move along the pipeline.

[0007] The first buckle plate, the second buckle plate, and the blocking plate together form a sealed space covering the outside of the pipe. The second buckle plate is provided with a support component for abutting against the pipe.

[0008] Along the length of the first buckle plate, there are gas concentration sensors arranged in a sequential array; the first buckle plate is equipped with a battery, and the battery contains a GPS positioning module.

[0009] Furthermore, the first buckle includes a first arc segment and extension segments connected to both ends of the first arc segment, and the second buckle is connected to the extension segments;

[0010] The second buckle plate includes a second arc segment correspondingly disposed below the first arc segment, and connecting segments connecting the two ends of the second arc segment;

[0011] The connecting segment is fixed to the extension segment, and the two sets of support components are elastically connected to the connecting segment.

[0012] Furthermore, the support assembly includes an arc-shaped clamping plate, a plurality of abutment members connected to the inner wall of the clamping plate, and ball bearings disposed within the abutment members;

[0013] The connecting section is provided with a sleeve, and a set screw is slidably connected inside the sleeve. The lower end of the set screw is fixedly connected to the clamp plate. A first elastic element is provided between the set screw and the connecting section, and the first elastic element is provided inside the sleeve.

[0014] Furthermore, the blocking plate includes a first sub-plate fixed to one of its extension sections and a second sub-plate connected to the other extension section. Both the first sub-plate and the second sub-plate are formed with receiving holes to accommodate the pipe. The first sub-plate and the second sub-plate are symmetrically arranged relative to the pipe.

[0015] The second arc segment includes a first arc plate connected to one of the connecting segments and a second arc plate connected to the other connecting segment.

[0016] Furthermore, the second buckle plate is provided with a first clip, and the second arc plate is provided with a second clip. When the first plate and the second plate are close together, the second clip is pressed and the second clip is engaged in the first clip.

[0017] When the second card is pressed quickly again, the first card disengages from the second card.

[0018] Furthermore, the first clip includes a mounting shaft and a first hook connected to the mounting shaft. The first hook has an upwardly recessed notch. One end of the mounting shaft that extends into the second arc plate is provided with a shoulder. A second elastic member is sleeved on the mounting shaft, and the second elastic member is located between the first hook and the second arc plate.

[0019] Furthermore, the second clip includes a mounting plate disposed at the bottom end of the second arc plate, a circular shaft slidably connected to the mounting plate, and a second hook connected to one end of the circular shaft; a third elastic element is sleeved on the circular shaft, and a frustum is provided at the other end of the circular shaft, with the third elastic element disposed between the frustum and the mounting plate;

[0020] The second hook has an upward protrusion. When the first clip engages with the second clip, the protrusion is inserted into the notch, and both the second elastic element and the third elastic element are compressed and stored.

[0021] Furthermore, the first hook also includes a triangular segment and a protruding segment on both sides of the notch, the right-angled side of the triangular segment is engaged with the right-angled side of the second hook, the protruding segment is provided with a first inclined surface, and the second hook is provided with a second inclined surface;

[0022] When the second clip is pressed quickly again, the second inclined surface of the second clip moves along the first inclined surface, and due to the guidance of the first inclined surface, the protrusion tilts downward and moves away from the notch. The second elastic element continues to compress and store energy, and the third elastic element rebounds and releases energy, causing the second clip to disengage from the first clip.

[0023] Furthermore, the transmission assembly includes a motor and a traveling wheel disposed on the power output shaft of the motor;

[0024] The motor is fixedly connected to the first buckle plate, and the transmission assembly is located above the pipe.

[0025] Compared with the prior art, this utility model has the following advantages:

[0026] The buried gas pipeline leak detection device of this utility model seals a section of gas pipeline by connecting the first and second fastening plates and the blocking plates on both sides. This allows a gas concentration sensor located within the sealed space to quickly detect leaks in that section of the pipeline. When the leak exceeds the standard, an alarm is triggered, and the location is marked via a GPS positioning module, improving the accuracy of marking potentially hazardous gas pipelines. Furthermore, the support components on the second fastening plate allow the detection device to anchor itself to the pipeline under its own weight, ensuring proper positioning and preventing misalignment. A transmission component then drives the device to move along the pipeline, performing pipeline inspections over a specific area, thus achieving automated inspection and improving inspection efficiency. Attached Figure Description

[0027] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0028] Figure 1 This is a front view schematic diagram of the buried gas pipeline leakage detection device according to an embodiment of the present utility model;

[0029] Figure 2 for Figure 1 Schematic diagram of the cross section at point AA;

[0030] Figure 3 for Figure 2 Schematic diagram of the cross section at point BB;

[0031] Figure 4 for Figure 3 A magnified view of a section at point I;

[0032] Figure 5 for Figure 3 A magnified view of section II in the middle.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. First snap plate; 2. Second snap plate; 3. Blocking plate; 4. Transmission assembly; 5. Support assembly; 6. Gas concentration sensor; 7. Battery; 8. First clamp; 9. Second clamp; 10. Pipeline;

[0035] 101. First arc segment; 102. Extension segment;

[0036] 201. Second circular arc segment; 202. Connecting segment;

[0037] 301. First partition; 302. Second partition;

[0038] 401. Motor; 402. Wheels;

[0039] 501. Clamping plate; 502. Abutment component; 503. Ball bearing; 504. Sleeve; 505. Set screw; 506. First elastic component;

[0040] 801. Mounting shaft; 802. First hook; 803. Notch; 804. Shoulder; 805. Second elastic element; 806. Triangular segment; 807. Protruding segment; 808. First inclined surface;

[0041] 901. Mounting plate; 902. Round shaft; 903. Second hook; 904. Third elastic element; 905. Frustum;

[0042] 2011, First arc plate; 2012, Second arc plate;

[0043] 9031, Protrusion. Detailed Implementation

[0044] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0045] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "back," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0047] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0048] This embodiment relates to a leak detection device for a buried gas pipeline 10. Overall, as... Figures 1 to 5 As shown, the detection device includes a first snap plate 1 with one open end, a second snap plate 2 connected below the first snap plate 1, blocking plates 3 connected to both sides of the first snap plate 1, and a transmission assembly 4 for driving the detection device along the pipeline 10. The first snap plate 1, the second snap plate 2, and the blocking plates 3 form a sealed space covering the outside of the pipeline 10. The second snap plate 2 is provided with a support assembly 5 for abutting against the pipeline 10. Along the length direction of the first snap plate 1, gas concentration sensors 6 are arranged in an array. A battery 7 is provided on the first snap plate 1, and a GPS positioning module is installed inside the battery 7.

[0049] As described above, this embodiment seals a section of gas pipeline 10 by connecting the first buckle plate 1 and the second buckle plate 2, along with the blocking plates 3 on both sides. This allows the gas concentration sensor 6, located within the sealed space, to quickly detect any leaks in the pipeline 10. When the leak exceeds the standard, an alarm is triggered, and the location is marked via a GPS positioning module, improving the accuracy of marking potentially hazardous gas pipelines 10. Furthermore, the support component 5 on the second buckle plate 2 allows the detection device to rest on the pipeline 10 under its own weight, ensuring proper positioning and preventing misalignment. The transmission component 4 then drives the device along the pipeline 10 to inspect a section of the pipeline, achieving automated inspection and improving inspection efficiency.

[0050] Based on the above overall description, an exemplary structure of the buried gas pipeline 10 leakage detection device in this embodiment is as follows: Figures 1 to 3 As shown, the first snap plate 1 is shaped into a downward-opening V-shape, which facilitates installation. In actual installation, the first snap plate 1 is placed from top to bottom, the support component 5 abuts against the pipe 10, and then the second snap plate 2 is placed with its opening facing upward, passing through the bottom of the pipe 10, and then the first snap plate 1 and the second snap plate 2 are connected.

[0051] As a preferred embodiment, such as Figures 1 to 3 As shown, the first buckle plate 1 includes a first arc segment 101 and extension segments 102 connected to both ends of the first arc segment 101. The second buckle plate 2 is connected to the extension segments 102. The second buckle plate 2 includes a second arc segment 201 correspondingly disposed below the first arc segment 101 and connecting segments 202 connected to both ends of the second arc segment 201. The connecting segments 202 are fixed on the extension segments 102, and two sets of support components 5 are elastically connected to the connecting segments 202.

[0052] Preferably, such as Figures 1 to 4 As shown, the support assembly 5 includes an arc-shaped clamping plate 501, several abutment members 502 connected to the inner wall of the clamping plate 501, and ball bearings 503 disposed within the abutment members 502. A sleeve 504 is provided on the connecting section 202, and a set screw 505 is slidably connected within the sleeve 504. The lower end of the set screw 505 is fixedly connected to the clamping plate 501. A first elastic member 506 is provided between the set screw 505 and the connecting section 202, and the first elastic member 506 is disposed within the sleeve 504. Figure 3 As shown, the clamp 501 covers both sides of the pipe 10 and is formed into an arc shape to facilitate the installation of multiple abutment members 502 to cover the outer periphery of the pipe 10. By setting ball bearings 503, friction is reduced during movement, thereby reducing the energy consumption of the detection device.

[0053] Furthermore, such as Figure 2 As shown, the blocking plate 3 includes a first segment 301 fixed to one of its extensions 102, and a second segment 302 connected to the other extension 102. Both the first segment 301 and the second segment 302 have accommodating holes for accommodating the pipe 10. The first segment 301 and the second segment 302 are symmetrically arranged relative to the pipe 10. The second arc segment 201 includes a first arc plate 2011 connected to one of its connecting segments 202, and a second arc plate 2012 connected to the other connecting segment 202. After the first snap plate 1 and the second snap plate 2 are positioned and connected, the first arc plate 2011 and the second arc plate 2012 are respectively snapped onto the pipe 10, and the two arc plates are fixed to both sides of the first snap plate 1 with bolts.

[0054] Alternatively, the first dividing plate 301 can be installed on both sides of the first connecting section 202 and the first arc plate 2011, and the second dividing plate 302 can be installed on both sides of the other connecting section 202 and the second arc plate 2012. Then, the two connecting sections 202 can be connected by bolts on both sides of the first buckle plate 1.

[0055] Preferably, to ensure the tightness of the sealed space, such as Figure 3 and Figure 5 As shown, the second buckle plate 2 is provided with a first clip 8, and the second arc plate 2012 is provided with a second clip 9. When the first sub-plate 301 and the second sub-plate 302 are close together, the second clip 9 is pressed and the second clip 9 is engaged in the first clip 8. When the second clip 9 is pressed quickly again, the first clip 8 and the second clip 9 are disengaged.

[0056] Furthermore, the first clip 8 includes a mounting shaft 801 and a first hook 802 connected to the mounting shaft 801. The first hook 802 has an upwardly recessed notch 803. One end of the mounting shaft 801 that extends into the second arc plate 2012 is provided with a shoulder 804. A second elastic member 805 is sleeved on the mounting shaft 801. The second elastic member 805 is located between the first hook 802 and the second arc plate 2012.

[0057] In addition, such as Figure 5 As shown, the second locking member 9 includes a mounting plate 901 located at the bottom of the second arc plate 2012, a circular shaft 902 slidably connected to the mounting plate 901, and a second hook 903 connected to one end of the circular shaft 902; a third elastic member 904 is sleeved on the circular shaft 902, and a frustum 905 is located at the other end of the circular shaft 902, with the third elastic member 904 positioned between the frustum 905 and the mounting plate 901. The second hook 903 has an upwardly protruding protrusion 9031. When the first locking member 8 and the second locking member 9 are engaged, the protrusion 9031 is inserted into the notch 803, and both the second elastic member 805 and the third elastic member 904 are compressed and stored.

[0058] And, still as Figure 5 As shown, the first hook 802 also includes a triangular segment 806 and a protruding segment 807 on both sides of the notch 803. The right-angled side of the triangular segment 806 engages with the right-angled side of the second hook 903. The protruding segment 807 has a first inclined surface 808, and the second hook 903 has a second inclined surface. When the second latch 9 is pressed quickly again, the second inclined surface of the second latch 9 moves along the first inclined surface 808, and due to the guidance of the first inclined surface 808, the protrusion 9031 tilts downward and moves away from the notch 803. The second elastic element 805 continues to compress and store energy, and the third elastic element 904 rebounds and releases energy, causing the second latch 9 to disengage from the first latch 8.

[0059] Preferably, such as Figure 2As shown, the transmission assembly 4 includes a motor 401 and a traveling wheel 402 mounted on the power output shaft of the motor 401. The motor 401 is fixedly connected to the first buckle plate 1, and the transmission assembly 4 is located above the pipe 10.

[0060] The gas concentration sensor 6 in this embodiment includes a semiconductor methane sensor and an infrared methane sensor, which are arranged sequentially and at intervals above the pipe 10. The detection device also includes several acoustic sensors arranged on the clamp 501. When a characteristic frequency above 3kHz is detected and the methane concentration exceeds 500ppm, an alarm mechanism is triggered.

[0061] The buried gas pipeline 10 leakage detection device of this embodiment can quickly and accurately detect whether a section of the pipeline 10 is leaking by setting a sealed space. It can also automatically detect over a distance underground by burying the pipeline 10, thereby improving detection efficiency and achieving accurate positioning. It is suitable for complex geological environments.

[0062] 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 leak detection device for buried gas pipelines (10), characterized in that: It includes a first buckle plate (1) with one end open, a second buckle plate (2) connected below the first buckle plate (1), a blocking plate (3) connected to both sides of the first buckle plate (1), and a transmission assembly (4) for driving the detection device to move along the pipe (10). The first buckle plate (1), the second buckle plate (2), and the blocking plate (3) form a sealed space covering the outside of the pipe (10). The second buckle plate (2) is provided with a support component (5) for abutting against the pipe (10). Along the length of the first buckle plate (1), there are gas concentration sensors (6) arranged in a sequential array; the first buckle plate (1) is provided with a storage battery (7), and the storage battery (7) is provided with a GPS positioning module.

2. The buried gas pipeline (10) leakage detection device according to claim 1, characterized in that: The first buckle (1) includes a first arc segment (101) and an extension segment (102) connected to both ends of the first arc segment (101), and the second buckle (2) is connected to the extension segment (102); The second buckle plate (2) includes a second arc segment (201) correspondingly disposed below the first arc segment (101), and a connecting segment (202) connecting the two ends of the second arc segment (201); The connecting segment (202) is fixed on the extension segment (102), and the two sets of support components (5) are elastically connected to the connecting segment (202).

3. The buried gas pipeline (10) leakage detection device according to claim 2, characterized in that: The support assembly (5) includes an arc-shaped clamp (501), a plurality of abutment members (502) connected to the inner wall of the clamp (501), and ball bearings (503) disposed in the abutment members (502). The connecting section (202) is provided with a sleeve (504), and a set screw (505) is slidably connected inside the sleeve (504). The lower end of the set screw (505) is fixedly connected to the clamping plate (501). A first elastic element (506) is provided between the set screw (505) and the connecting section (202), and the first elastic element (506) is provided inside the sleeve (504).

4. The buried gas pipeline (10) leakage detection device according to claim 3, characterized in that: The blocking plate (3) includes a first plate (301) fixed to one of its extensions (102) and a second plate (302) connected to the other extension (102). Both the first plate (301) and the second plate (302) have receiving holes formed in them to accommodate the pipe (10). The first plate (301) and the second plate (302) are symmetrically arranged relative to the pipe (10). The second arc segment (201) includes a first arc plate (2011) connected to one of the connecting segments (202) thereon, and a second arc plate (2012) connected to the other of the connecting segments (202).

5. The buried gas pipeline (10) leakage detection device according to claim 4, characterized in that: The second buckle plate (2) is provided with a first clip (8), and the second arc plate (2012) is provided with a second clip (9). When the first sub-plate (301) and the second sub-plate (302) are close together, the second clip (9) is pressed and the second clip (9) is engaged in the first clip (8). When the second card (9) is pressed quickly again, the first card (8) disengages from the second card (9).

6. The buried gas pipeline (10) leakage detection device according to claim 5, characterized in that: The first clip (8) includes a mounting shaft (801) and a first hook (802) connected to the mounting shaft (801). The first hook (802) has an upwardly recessed notch (803). One end of the mounting shaft (801) that extends into the second arc plate (2012) is provided with a shoulder (804). A second elastic member (805) is sleeved on the mounting shaft (801). The second elastic member (805) is located between the first hook (802) and the second arc plate (2012).

7. The buried gas pipeline (10) leakage detection device according to claim 6, characterized in that: The second clamping member (9) includes a mounting plate (901) disposed at the bottom end of the second arc plate (2012), a round shaft (902) slidably connected to the mounting plate (901), and a second hook (903) connected to one end of the round shaft (902); a third elastic member (904) is sleeved on the round shaft (902), and a frustum (905) is disposed at the other end of the round shaft (902); the third elastic member (904) is disposed between the frustum (905) and the mounting plate (901); The second hook (903) has an upward protrusion (9031). When the first clip (8) and the second clip (9) are engaged, the protrusion (9031) is inserted into the notch (803), and the second elastic member (805) and the third elastic member (904) are compressed and stored.

8. The buried gas pipeline (10) leakage detection device according to claim 7, characterized in that: The first hook (802) further includes a triangular segment (806) and a protruding segment (807) disposed on both sides of the notch (803). The right-angled side of the triangular segment (806) is engaged with the right-angled side of the second hook (903). The protruding segment (807) is provided with a first inclined surface (808), and the second hook (903) is provided with a second inclined surface. When the second clip (9) is pressed quickly again, the second inclined surface of the second clip (9) moves along the first inclined surface (808), and due to the guidance of the first inclined surface (808), the protrusion (9031) tilts downward and moves away from the notch (803), the second elastic element (805) continues to compress and store energy, the third elastic element (904) rebounds and releases energy, and the second clip (9) disengages from the first clip (8).

9. The buried gas pipeline (10) leakage detection device according to claim 1, characterized in that: The transmission assembly (4) includes a motor (401) and a traveling wheel (402) disposed on the power output shaft of the motor (401); The motor (401) is fixedly connected to the first buckle plate (1), and the transmission assembly (4) is located above the pipe (10).

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