A town gas buried pipeline gas leakage detection device

Abstract

The utility model discloses a kind of town gas buried pipeline gas leakage detection devices, belong to gas detection equipment technical field.The device includes detector, telescopic link, connector and inductor, telescopic link includes outer pole, middle pole and inner pole which are successively sleeved.Connecting head is equipped with locking mechanism, the mechanism includes fixed on the magnetic force ring of connector, slidingly sleeved abutment ring, fixed on the magnetic ring of abutment ring, multiple abutment balls and limit ring;The magnetic pole of the magnetic ring and magnetic force ring is same pole, and the magnetic repulsion between them is used to drive abutment ring, and then abutment ball is compressed, and the quick mechanical locking of inductor is realized.The utility model greatly simplifies the replacement operation of inductor by ingenious magnetic locking mechanism, and ensures the stability and reliability of connection, effectively prevents vibration from falling off;Meanwhile, through telescopic locking structure, make that device length adjustment is convenient, and the detection adaptability to different depth buried pipeline is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of gas detection equipment technology, and in particular to a gas leak detection device for buried gas pipelines in urban areas. Background Technology

[0002] Urban gas pipeline networks are a vital urban infrastructure, and their safe and stable operation is crucial. To prevent safety accidents caused by gas leaks, regular inspections and leak detection of buried gas pipelines are necessary. On-site inspection personnel typically use portable gas leak detection devices. These devices generally consist of a handheld main unit and a detection rod with a gas sensor. By extending the sensor at the end of the detection rod into the area to be tested, gas is collected, and the presence of a leak is determined.

[0003] In practical use, the gas sensor at the front end is a precision and easily worn component. It not only has a limited lifespan but can also be damaged by contact with contaminants or physical impacts, requiring periodic calibration or replacement. Therefore, the convenience and reliability of the connection structure between the sensor and the detection rod directly affect the efficiency and accuracy of the detection work.

[0004] In existing detection devices, the connection between the sensor and the detection rod mostly uses threaded connections or simple elastic snap-fit ​​structures. While threaded connections are secure, they are cumbersome to replace in the field, especially in outdoor muddy environments where the threads are easily contaminated or damaged, making disassembly and assembly difficult. Simple elastic snap-fit ​​structures, while easier to replace, have limited locking force. When the detection rod is inserted into the ground, experiences vibration, or is impacted, the connection's reliability is insufficient, posing a risk of the sensor unexpectedly loosening or even falling off. This could not only interrupt the detection process but also damage the sensor.

[0005] Therefore, this utility model proposes a gas leak detection device for buried urban gas pipelines to address the shortcomings of existing technologies. Summary of the Invention

[0006] To overcome the above shortcomings, this utility model provides a gas leak detection device for buried urban gas pipelines, aiming to improve the existing technology of gas leak detection devices for buried urban gas pipelines, which suffer from problems such as cumbersome and time-consuming connection methods or low connection reliability due to vibration.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A gas leak detection device for buried urban gas pipelines includes: a detector, a telescopic rod, a connector, a sensor, and a connecting wire; the detector is equipped with a display screen and a detection button, and the telescopic rod includes an outer rod, a middle rod, and an inner rod that are sequentially connected.

[0008] The connector is provided with a locking mechanism for locking the sensor. The locking mechanism has a magnetic ring, an abutment ring that is slidably sleeved on the outside of the connector, a magnetic ring fixed on the abutment ring, a plurality of abutment balls that are movably accommodated in the wall of the connector, and a limiting ring fixed on the outside of the connector.

[0009] Furthermore, the magnetic ring is fixed to the outer periphery of the connector, and the magnetic poles of the magnetic ring and the magnetic ring are arranged in a manner with the same poles facing each other. The limiting ring is located on the side of the abutment ring away from the magnetic ring. Through this structural combination, the magnetic repulsion force is used to drive the abutment ball to quickly and reliably lock the sensor.

[0010] Preferably, the telescopic rod further includes a locking structure for fixing the outer rod, middle rod, and inner rod relatively. The locking structure includes a spring plate fixed to the inner rod and a limiting ball held by the spring plate, and an elastic plate fixed to the middle rod and a locking ball held by the elastic plate. The inner walls of the middle rod and the outer rod are respectively provided with locking grooves that cooperate with the limiting ball and the locking ball.

[0011] Preferably, the outer wall of the sensor is provided with a slot, and under the push of the abutment ring, a portion of the abutment ball protrudes from the inner wall of the connector and is inserted into the slot of the sensor.

[0012] Preferably, the inner wall of the abutting ring abuts against the exposed portion of the abutting ball, and the repulsive force generated between the magnetic ring and the magnetic coil acts on the abutting ball through the abutting ring.

[0013] Preferably, the spring sheet is installed in such a way that it is compressed when the inner rod is pulled out relative to the middle rod, and rebounds when the limiting ball is aligned with the groove of the middle rod, so as to push the limiting ball into place.

[0014] Preferably, the elastic plate is installed in such a way that it is compressed when the center rod is pulled out relative to the outer rod, and rebounds when the ball is aligned with the slot of the outer rod, so as to push the ball into place.

[0015] Preferably, the detector has an integrated processing module for analyzing and processing the signals transmitted by the sensor.

[0016] Preferably, the wall of the connector is provided with a through hole for receiving and partially extending the abutting ball.

[0017] This utility model has the following beneficial effects: 1. This utility model solves the problem in the prior art that the length of the detection rod of the gas detection device is fixed or inconvenient to adjust, making it difficult to adapt to the detection needs of buried pipelines at different depths, by setting a telescopic rod composed of an outer rod, a middle rod and an inner rod connected in sequence, and cooperating with a locking structure composed of spring plates, limit balls, elastic plates and locking balls set between the rods. It achieves the technical effect of being able to quickly and reliably adjust the total detection length according to the actual needs on site, and enhancing the environmental adaptability and ease of operation of the device.

[0018] This invention solves the problems of complex sensor-detection rod connection methods, inconvenient replacement, poor connection stability, and easy loosening due to vibration in the prior art by setting a locking mechanism consisting of a magnetic ring, a contact ring, a magnetic ring, a limiting ring, and a contact ball on the connector head. The repulsive force generated by the repulsion between the like poles of the magnetic ring and the magnetic ring drives the contact ring to press the contact ball. This achieves the technical effect of enabling rapid sensor installation and replacement, providing continuous and stable locking force, ensuring high connection reliability, and improving equipment maintenance efficiency and detection reliability. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a gas leak detection device for buried urban gas pipelines proposed in this utility model. Figure 2 This is a cross-sectional view of the outer rod of a gas leak detection device for buried urban gas pipelines proposed in this utility model; Figure 3 This is a cross-sectional view of the connector of a gas leak detection device for buried urban gas pipelines proposed in this utility model.

[0020] Legend: 1. Detector; 2. Display screen; 3. Detection button; 4. Outer rod; 5. Middle rod; 6. Inner rod; 7. Spring plate; 8. Limit ball; 9. Elastic plate; 10. Clamping ball; 11. Connecting wire; 12. Connector; 13. Magnetic ring; 14. Abutment ring; 15. Magnetic ring; 16. Limit ring; 17. Abutment ball; 18. Sensor. Detailed Implementation

[0021] 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.

[0022] Reference Figures 1-3The present invention provides an embodiment of a gas leak detection device for buried urban gas pipelines. The gas leak detection device for buried urban gas pipelines includes a detector 1. The detector 1 is equipped with a display screen 2 for displaying detection results and a detection button 3 for starting the detection program. The detector 1 has an integrated processing module for analyzing and processing the signals transmitted by the sensor 18. The telescopic rod is fixedly connected to the detector 1. The telescopic rod includes an outer rod 4, a middle rod 5, and an inner rod 6 that are sequentially sleeved together. The end of the inner rod 6 away from the detector 1 is fixedly connected to the connector 12, and the sensor 18 is detachably installed on the connector 12; Connector 11 is electrically connected between sensor 18 and detector 1; Specifically, the connector 12 is provided with a locking mechanism for locking the sensor 18. This locking mechanism is one of the core innovations of this solution. Its structure includes a magnetic ring 13, which is fixed to the outer periphery of the connector 12. The locking mechanism also includes an abutment ring 14, which is slidably sleeved on the outside of the connector 12. A magnetic ring 15 is fixed on the abutment ring 14. The magnetic poles of the magnetic ring 15 and the magnetic ring 13 are arranged opposite each other with the same pole, thereby generating a continuous repulsive force between the magnetic ring 15 and the magnetic ring 13. The locking mechanism also includes a plurality of abutment balls 17, which are movably accommodated in the wall of the connector 12. The wall of the connector 12 has through holes for the abutment balls 17 to be accommodated and partially extended. The locking mechanism also includes a limiting ring 16, which is fixed to the outside of the connector 12 and located on the side of the abutment ring 14 away from the magnetic ring 13, and is used to limit the sliding stroke of the abutment ring 14.

[0023] To achieve convenient adjustment and reliable fixation of the telescopic rod length, the telescopic rod also includes a locking structure for relatively fixing the outer rod 4, the middle rod 5 and the inner rod 6. This locking structure is the core of solving the problem of detection depth adaptability. Specifically, the locking structure includes two sets of elastic locking mechanisms set between the inner rod 6 and the middle rod 5, and between the middle rod 5 and the outer rod 4. The first set of locking mechanisms includes a spring plate 7 fixed on the inner rod 6 and a limiting ball 8 held by the spring plate 7. Correspondingly, the inner wall of the middle rod 5 is provided with a slot that can accommodate the limiting ball 8. The second set of locking mechanisms includes a spring plate 9 fixed on the middle rod 5 and a locking ball 10 held by the spring plate 9. Correspondingly, the inner wall of the outer rod 4 is provided with a locking groove that can accommodate the locking ball 10. When the telescopic rod needs to be extended, the inner rod 6 is pulled outward. The spring plate 7 is compressed by the inner wall of the middle rod 5. The limiting ball 8 slides along the inner wall of the middle rod 5. When the limiting ball 8 moves to the slot position on the inner wall of the middle rod 5, the elastic restoring force of the spring plate 7 pushes the limiting ball 8 into the slot, thereby locking the inner rod 6 relative to the middle rod 5. Similarly, when the middle rod 5 is pulled, the elastic plate 9 is compressed, and the locking ball 10 slides on the inner wall of the outer rod 4 and finally locks into the slot of the outer rod 4, thereby locking the middle rod 5 relative to the outer rod 4. This segmented locking structure ensures that the detection device can be flexibly adjusted and remain stable according to the different depths of the buried pipeline.

[0024] In a preferred embodiment, in order to reliably lock the sensor 18, the outer wall of the sensor 18 is provided with an annular groove, and the wall of the connector 12 is provided with a plurality of through holes for the abutment ball 17 to be accommodated and partially protruded. In the locked state, the inner wall of the abutment ring 14 abuts against the exposed part of the abutment ball 17, and the repulsive force generated between the magnetic ring 15 and the magnetic coil 13 acts on the abutment ball 17 through the abutment ring 14, pushing a part of the abutment ball 17 to protrude out of the inner wall of the connector 12 and tightly lock into the groove of the sensor 18. As a further embodiment, the mounting structure of the spring plate 7 allows the spring plate 7 to be compressed by the inner wall of the middle rod 5 when the inner rod 6 slides axially relative to the middle rod 5, and the elastic restoring force of the spring plate 7 can push the limiting ball 8 into the groove when the limiting ball 8 is aligned with the groove of the middle rod 5; similarly, the mounting structure of the elastic plate 9 allows the elastic plate 9 to be compressed by the inner wall of the outer rod 4 when the middle rod 5 slides axially relative to the outer rod 4, and the elastic restoring force of the elastic plate 9 can push the locking ball 10 into the groove when the locking ball 10 is aligned with the groove of the outer rod 4; As another preferred embodiment, the detector 1 also integrates a processing module, which is electrically connected to the display screen 2 and the connecting cable 11 to receive and process signals from the sensor 18.

[0025] Working principle: When performing gas leak detection, if the length of the detection rod needs to be adjusted, the operator can pull the inner rod 6 or the middle rod 5 outward. During the pulling process, the spring plate 7 or elastic plate 9 is compressed by the inner wall of the outer rod, allowing the limiting ball 8 or locking ball 10 to slide on the inner wall of the rod. When stretched to the appropriate length, the limiting ball 8 or locking ball 10 moves exactly to the preset slot position. At this time, the compressed spring plate 7 or elastic plate 9 rebounds, and its elasticity pushes the limiting ball 8 or locking ball 10 to quickly lock into the corresponding slot, thereby achieving a firm lock between the inner rod 6 and the middle rod 5, and between the middle rod 5 and the outer rod 4, to adapt to the detection requirements of different depths.

[0026] When it is necessary to install or replace sensor 18, the operator first slides the abutment ring 14 towards the magnetic ring 13. This action overcomes the magnetic repulsion between the magnetic ring 15 and the magnetic ring 13. At this time, the abutment ball 17 is no longer radially pressed by the abutment ring 14 and can be recessed into the inner wall of the connector 12. Then, the sensor 18 is inserted into the connector 12, and its outer wall will push the abutment ball 17 away. When the slot of the sensor 18 is aligned with the abutment ball 17, the abutment ring 14 is released. The magnetic force between the like poles of the magnetic ring 15 and the magnetic ring 13 will instantly push the abutment ring 14, making it press tightly against the top of the abutment ball 17, thereby pressing the abutment ball 17 into the slot of the sensor 18. The whole process can achieve a fast and stable mechanical locking without tools.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 gas leak detection device for buried urban gas pipelines, comprising: The detector (1) is equipped with a display screen (2) and a detection button (3). Telescopic rod, which is fixedly connected to the detector (1), and the telescopic rod includes an outer rod (4), a middle rod (5) and an inner rod (6) that are sleeved together in sequence. Connector (12) is fixedly connected to the end of the inner rod (6) away from the detector (1); The sensor (18) is detachably mounted on the connector (12). A connecting line (11) is electrically connected between the sensor (18) and the detector (1); The feature is that the connector (12) is provided with a locking mechanism for locking the sensor (18), the locking mechanism comprising: A magnetic ring (13) is fixed to the outer periphery of the connector (12); The abutment ring (14) is slidably sleeved on the outside of the connector (12); A magnetic ring (15) is fixed on the abutment ring (14), and the magnetic ring (15) and the magnetic circle (13) are arranged with their magnetic poles facing each other. Multiple abutting balls (17) are movably accommodated within the wall of the connector (12); The limiting ring (16) is fixed to the outside of the connector (12) and is located on the side of the abutment ring (14) away from the magnetic ring (13).

2. The gas leak detection device for buried urban gas pipelines according to claim 1, characterized in that, The telescopic rod also includes a locking structure for fixing the outer rod (4), the middle rod (5) and the inner rod (6) relatively. The locking structure includes a spring plate (7) fixed on the inner rod (6) and a limiting ball (8) held by the spring plate (7). The inner wall of the middle rod (5) is provided with a groove that cooperates with the limiting ball (8). The locking structure also includes an elastic piece (9) fixed on the middle rod (5) and a locking ball (10) held by the elastic piece (9), and the inner wall of the outer rod (4) is provided with a locking groove that cooperates with the locking ball (10).

3. The gas leak detection device for buried urban gas pipelines according to claim 1, characterized in that, The outer wall of the sensor (18) is provided with a slot. Under the push of the abutting ring (14), a portion of the abutting ball (17) protrudes from the inner wall of the connector (12) and is inserted into the slot of the sensor (18).

4. A gas leak detection device for buried urban gas pipelines according to claim 3, characterized in that, The inner wall of the abutting ring (14) abuts against the exposed part of the abutting ball (17), and the repulsive force generated between the magnetic ring (15) and the magnetic coil (13) acts on the abutting ball (17) through the abutting ring (14).

5. A gas leak detection device for buried urban gas pipelines according to claim 2, characterized in that, The spring sheet (7) is compressed when the inner rod (6) is pulled out relative to the middle rod (5), and rebounds when the limiting ball (8) is aligned with the slot of the middle rod (5) to push the limiting ball (8) into place.

6. A gas leak detection device for buried urban gas pipelines according to claim 2, characterized in that, The elastic piece (9) is compressed when the middle rod (5) is pulled out relative to the outer rod (4), and rebounds when the locking ball (10) is aligned with the slot of the outer rod (4) to push the locking ball (10) into place.

7. A gas leak detection device for buried urban gas pipelines according to claim 1, characterized in that, The detector (1) has an integrated processing module for analyzing and processing the signals transmitted by the sensor (18).

8. A gas leak detection device for buried urban gas pipelines according to claim 1, characterized in that, The connector (12) has a through hole on its wall for the abutment ball (17) to be accommodated and partially extended.

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