A pipeline settlement detection device

Abstract

The present invention relates to the technical field of pipeline detection, and specifically discloses a pipeline settlement detection device, comprising: a base; an upper housing and a lower housing mounted on the base; and a plurality of groups of detection components circumferentially and uniformly arranged in the upper housing and the lower housing; by embedding the base in a stable rock stratum at a relatively deep position below the pipeline, it is ensured that the reference point of the detection device will not move with the settlement of the overlying soil layer. The detection rod in the detection component can adaptively perform radial telescopic movement according to the pipeline settlement, which can not only monitor the settlement amount of the pipeline, but also determine the settlement direction through the installation angle of the detection component corresponding to the maximum contraction stroke, realizing the dual monitoring of the settlement direction and the settlement amount, making the reading of the settlement data more intuitive and easy, facilitating the quick and accurate judgment of the settlement state of the pipeline, and improving the monitoring efficiency and the real-time nature of the data.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline detection, and more specifically, it relates to a pipeline settlement detection device. Background Art

[0002] Due to factors such as geological structure, groundwater level change, and soil shrinkage, the deformation of the foundation soil body is caused, which leads to the settlement of the pipeline buried underground. Excessive settlement will cause the pipeline to deform or even break. Therefore, it is necessary to detect and effectively monitor the settlement of the pipeline;

[0003] The prior art does not consider the stability of the reference point of the detection device itself, resulting in the change of the position of the reference point with the settlement of the soil layer, thus affecting the accuracy and reliability of the monitoring data. The existing settlement detection devices usually can only detect the settlement of a local area or a single direction of the pipeline, cannot provide all-round settlement data, and cannot determine the specific direction of the settlement, which is not conducive to quickly and accurately judging the settlement state of the pipeline. Summary of the Invention

[0004] In order to overcome the above technical problems, the present invention proposes a pipeline settlement detection device.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A pipeline settlement detection device, comprising:

[0007] A base, on both sides of which two groups of guiding studs are symmetrically and vertically fixed, and adjusting nuts are threadedly connected to the upper ends of the guiding studs;

[0008] An upper housing, which is movably sleeved on the guiding studs, and an upper inner liner is embedded in the upper housing;

[0009] A lower housing, which is detachably connected to the upper housing, and a lower inner liner is embedded in the lower housing. The lower inner liner and the upper inner liner are spliced to form a cylindrical structure for accommodating the pipeline;

[0010] A reinforcing stud, which is threadedly connected to the middle of the base, and the reinforcing stud abuts against the bottom of the lower housing;

[0011] A plurality of detection components, which are circumferentially and evenly distributed in the cylindrical structure. The detection component includes a sleeve, the sleeve is fixed in the cylindrical structure through a mounting bracket, and a detection rod that abuts against the outer wall of the pipeline is slidably arranged at one end of the sleeve facing the pipeline.

[0012] As a further solution of the present invention: A ball sleeve is arranged at one end of the detection rod facing the pipeline, and a ball is movably embedded in the ball sleeve.

[0013] As a further solution of the present invention: One end of the sleeve away from the detection rod is communicated with a detection chamber. The sleeve is filled with a liquid, and a flow detector for detecting the liquid flow rate is arranged in the detection chamber.

[0014] As a further solution of the present invention: A top support spring abutting against the detection rod is arranged in the sleeve.

[0015] As a further solution of the present invention: A first partition plate and a second partition plate are arranged in the detection chamber. The first partition plate and the second partition plate sequentially divide the inside of the detection chamber into a first chamber, an installation chamber and a second chamber. The second chamber is communicated with the inside of the sleeve. A spiral coiled pipe is arranged in the installation chamber. Two ends of the spiral coiled pipe are respectively communicated with the first chamber and the second chamber. The flow detector is arranged in the flow channel of the spiral coiled pipe.

[0016] As a further solution of the present invention: A flexible bladder communicated with the spiral coiled pipe is arranged in the first chamber. A through hole communicated with the outside is opened on one side of the first chamber.

[0017] As a further solution of the present invention: Flexible seals for wrapping the pipeline are arranged on both sides of the upper housing and the lower housing.

[0018] As a further solution of the present invention: Two groups of flexible seals on the same side of the upper housing and the lower housing are mutually adapted and spliced. A sealing groove is arranged on the splicing surface of the flexible seal of the upper housing. A sealing strip adapted to the sealing groove is arranged on the splicing surface of the flexible seal of the lower housing.

[0019] As a further solution of the present invention: The flexible seal includes an annular air bag and a conical air bag which are communicated with each other. An expansion part which fits the outer wall of the pipeline is arranged at one end of the conical air bag away from the annular air bag.

[0020] As a further solution of the present invention: A recessed part is opened on the lower housing. An extrusion air bag is arranged in the recessed part. A first air hole is opened on one side of the extrusion air bag. A second air hole is opened on the side corresponding to the annular air bag. The first air hole is communicated with the second air hole. A convex part adapted to the recessed part is arranged on the upper housing.

[0021] The beneficial effects of the present invention:

[0022] By embedding the base in the stable rock layer deep below the pipeline, the present invention ensures that the reference point of the detection device will not move with the settlement of the overlying soil layer, thereby providing a stable reference for pipeline settlement monitoring. A number of groups of detection components are evenly distributed circumferentially in the upper inner liner and the lower inner liner. This design enables the device to monitor the settlement of the pipeline in all directions, providing comprehensive settlement data. The detection rod can move radially relative to the pipeline in a telescopic manner. This adaptive mechanism allows the detection rod to move with the settlement of the pipeline, monitoring the settlement changes of the pipeline in real time. Through the contraction stroke data of the detection rod, not only can the settlement amount of the pipeline be monitored, but also the settlement direction can be determined by the installation angle of the detection component corresponding to the maximum contraction stroke, achieving dual monitoring of the settlement direction and the settlement amount, making the reading of the settlement data more intuitive and easier, facilitating the quick and accurate judgment of the settlement state of the pipeline, and improving the monitoring efficiency and the real-time nature of the data. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 is a three-dimensional schematic diagram of the present invention;

[0025] Figure 2 is a three-dimensional schematic diagram of another perspective of the present invention;

[0026] Figure 3 is a structural schematic diagram of the upper inner liner and the lower inner liner of the present invention;

[0027] Figure 4 is a structural schematic diagram of the lower inner liner and the detection components of the present invention;

[0028] Figure 5 is a schematic diagram of the position distribution of the detection components and the pipeline of the present invention;

[0029] Figure 6 is a three-dimensional schematic diagram of the detection component of the present invention;

[0030] Figure 7 is Figure 6 an enlarged view of part A in

[0031] Figure 8 is a cross-sectional view of the detection component of the present invention;

[0032] Figure 9 is a schematic diagram of the internal structure of the detection chamber of the present invention;

[0033] Figure 10 is a structural schematic diagram of the lower housing and the flexible seal of the present invention;

[0034] Figure 11 is Figure 10 an enlarged view of part B in

[0035] Figure 12 For Figure 10 The enlarged view at position C in

[0036] Figure 13 The schematic diagram of the cooperation between the flexible seal and the pipeline in the present invention;

[0037] Figure 14 For Figure 13 The enlarged view at position D in

[0038] Figure 15 The structural schematic diagram of the upper housing and the flexible seal in the present invention;

[0039] Figure 16 For Figure 15 The enlarged view at position E in

[0040] In the figure:

[0041] 100, base; 110, guiding stud; 120, upper housing; 121, protruding part; 130, lower housing; 131, recessed part; 132, extrusion airbag; 133, first air hole; 140, adjusting nut; 150, reinforcing stud; 160, flexible seal; 161, annular airbag; 162, conical airbag; 163, second air hole; 164, expansion part; 200, upper inner liner; 210, lower inner liner; 300, detecting part; 310, detecting chamber; 311, first partition; 312, second partition; 313, first chamber; 314, installation cavity; 315, second chamber; 316, through hole; 320, mounting bracket; 330, sleeve; 340, detecting rod; 341, ball sleeve; 342, ball; 350, spiral coiled pipe; 360, top support spring; 370, flexible bladder; 380, flow detector; 400, pipeline. Specific embodiments

[0042] Now, the subject matter described herein will be discussed with reference to exemplary embodiments. It should be understood that discussing these embodiments is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the scope of protection of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute or add various processes or components as needed. Additionally, the features described for some examples can also be combined in other examples.

[0043] Please refer to Figure 1 and Figure 2, the present invention discloses a pipeline settlement detection device, including a base 100, an upper housing 120, a lower housing 130, an upper inner liner 200, a lower inner liner 210 and a detection member 300; two groups of guiding studs 110 are symmetrically and vertically fixed on both sides of the base 100, the upper housing 120 is movably sleeved on the guiding studs 110, and an adjusting nut 140 is threadedly connected to the upper end of the guiding stud 110; the lower housing 130 is detachably connected to the upper housing 120, and a reinforcing stud 150 is threadedly connected to the middle of the base 100, and the reinforcing stud 150 abuts against the bottom of the lower housing 130;

[0044] Please refer to Figure 3 , Figure 4 , Figure 5 and Figure 6 , an upper inner liner 200 is embedded in the upper housing 120, a lower inner liner 210 is embedded in the lower housing 130, the upper inner liner 200 and the lower inner liner 210 are spliced to form a cylindrical structure for accommodating a pipeline 400, and a plurality of groups of detection members 300 are circumferentially and evenly distributed inside the cylindrical structure. The detection member 300 includes a sleeve 330, and the sleeve 330 is fixed inside the cylindrical structure through a mounting bracket 320. A detection rod 340 that abuts against the outer wall of the pipeline 400 is slidably arranged at one end of the sleeve 330 facing the pipeline 400;

[0045] Specifically, the base 100 is embedded in a stable rock stratum at a relatively deep position below the pipeline 400 to ensure that the base 100 itself will not collapse and settle with the soil layer at the landfill of the upper pipeline 400. Then, the upper housing 120 and the lower housing 130 are wrapped around the periphery of the pipeline 400 and sealed and connected. Then, the upper housing 120 is sleeved on the guiding studs 110 on both sides, so that the bottom of the lower housing 130 abuts against the upper end of the reinforcing stud 150. Then, the adjusting nut 140 and the reinforcing stud 150 are rotated to drive the upper housing 120 and the lower housing 130 to move up and down as a whole until the axis of the internal cylindrical structure coincides with the axis of the pipeline 400, so that each group of circumferentially distributed detection members 300 abuts against the outer wall of the pipeline 400. Thus, the calibration of the detection device and the pipeline 400 is completed, and finally the entire detection device and the pipeline 400 are landfilled;

[0046] Since the detection rod 340 can radially expand and contract relative to the pipeline 400, when the pipeline 400 settles in a certain direction, under the push of the pipeline 400, the detection rod 340 of the corresponding detection member 300 adaptively retracts into the sleeve 330, and the contraction stroke data of each group of detection rods 340 are obtained. Among them, the contraction stroke of the detection rod 340 corresponding to the settlement direction of the pipeline 400 is the largest. By querying the installation angle corresponding to the detection member 300 with the largest contraction stroke, the settlement direction and the specific settlement amount of the pipeline 400 can be known.

[0047] Further, please refer toFigure 5 , in order to more accurately detect the settlement direction and specific settlement amount of the pipeline 400, the installation angles of each group of detection components 300 in the cylindrical structure can be marked. Taking the installation angle of one group of detection components 300 as the reference point, that is, its installation angle is 0°, then the installation angles of other detection components 300 can be equally divided within the range of 360°. During the settlement detection process, when the contraction stroke of the detection rod 340 in a certain group of detection components 300 is the largest and the installation angle of this group of detection components 300 is a°, it indicates that the pipeline 400 settles in the direction of a°, and the settlement amount in this direction is the contraction amount corresponding to the detection rod 340 in this group of detection components 300.

[0048] It should be noted that in the present invention, by embedding the base 100 deep into the stable rock stratum below the pipeline 400, it is ensured that the reference point of the detection device will not move with the settlement of the overlying soil layer, thus providing a stable reference for pipeline settlement monitoring; several groups of detection components 300 are circumferentially distributed on the inner circumferences of the upper inner liner 200 and the lower inner liner 210. This design enables the device to comprehensively monitor the settlement of the pipeline 400 and provides comprehensive settlement data. The detection rod 340 can radially expand and contract relative to the pipeline 400. This adaptive mechanism enables the detection rod 340 to move with the settlement of the pipeline 400 and real-time monitor the settlement change of the pipeline 400; through the contraction stroke data of the detection rod 340, not only the settlement amount of the pipeline 400 can be monitored, but also the settlement direction can be determined by the installation angle of the detection component 300 corresponding to the maximum contraction stroke, realizing the dual monitoring of the settlement direction and settlement amount, making the reading of settlement data more intuitive and easy, facilitating the quick and accurate judgment of the settlement state of the pipeline 400, and improving the monitoring efficiency and real-time performance of the data.

[0049] In one embodiment, considering that when the pipeline 400 settles in a certain direction, in addition to the detection rod 340 corresponding to the settlement direction being able to radially contract, other detection rods 340 adjacent to this group of detection rods 340 will inevitably have relative slip with the pipeline 400 during the contraction process, which is likely to cause scratches on the outer surface of the pipeline 400 or even cause the detection rod 340 to bend or break due to the relatively large slip resistance; for this reason, please refer to Figure 6 and Figure 7 , a ball sleeve 341 is provided at one end of the detection rod 340 facing the pipeline 400, and a ball 342 is movably embedded in the ball sleeve 341;

[0050] Specifically, no matter in which direction the pipeline 400 settles, when the detection rod 340 in contact with it moves relative to the pipeline 400, the corresponding ball 342 can adaptively roll along the outer surface of the pipeline 400, thereby effectively reducing the frictional resistance between the detection rod 340 and the outer surface of the pipeline 400, improving the responsiveness of the detection rod 340, and avoiding damage to the detection rod 340 and the pipeline 400.

[0051] Further, in order to detect the contraction amount of the detection rod 340, please refer to Figure 6 and Figure 8 , a detection chamber 310 is communicated with one end of the sleeve 330 away from the detection rod 340. The sleeve 330 is filled with liquid, and a flow detector 380 for detecting the liquid flow rate is arranged in the detection chamber 310;

[0052] Specifically, when the detection rod 340 contracts as the pipeline 400 settles, it can push the liquid in the sleeve 330 into the detection chamber 310. The flow detector 380 detects the flow rate of the flowing liquid, and then the contraction stroke of the detection rod 340 can be calculated according to the cross-sectional area of the sleeve 330, thereby indirectly detecting the settlement amount of the pipeline 400;

[0053] It should be noted that the above flow detector 380 can communicate with the upper computer based on the Internet of Things, so that the upper computer can obtain the specific installation angle of the corresponding detection part 300 of the flow detector 380 in the cylindrical structure, thereby indirectly obtaining the settlement direction of the pipeline 400 and the settlement amount in this direction.

[0054] In addition, considering that the settlement direction of the pipeline 400 is random and constantly changing. During a certain period of time, the pipeline 400 may settle in a certain direction, and after another period of time, the pipeline 400 may settle in a direction opposite to the previous settlement direction. Therefore, in order to accurately detect the settlement dynamics of the pipeline 400 in real time, it is necessary to ensure that each detection part 300 is always in contact with the pipeline 400, so that the detection part 300 can make an adaptive attitude adjustment according to the dynamic changes of the pipeline 400. For this purpose, please refer to Figure 8 , a top support spring 360 in contact with the detection rod 340 is arranged in the sleeve 330;

[0055] Under the elastic force of the top support spring 360, the detection rod 340 is always subjected to an outward thrust, so that the detection rod 340 can always be in contact with the outer surface of the pipeline 400. In this way, no matter in which direction the pipeline 400 settles, it can be ensured that the detection rod 340 in each group of detection parts 300 contracts or extends synchronously with the pipeline 400, and then reflects the current state of the pipeline 400 in real time.

[0056] It should be noted that when the pipeline 400 sinks in a certain direction, the detection rod 340 in the detection piece 300 deviating from this direction will extend out of the sleeve 330 in the reverse direction and keep in contact with the outer surface of the pipeline 400. To avoid interference with the detection data caused by this situation, the flow detection values detected by the flow detectors 380 corresponding to each group of detection rods 340 in the initial state (i.e., the state when the pipeline 400 has not sunk) can be recorded as zero points. When the detection rod 340 shrinks, the detected flow of the flow detector 380 is positive, and when the detection rod 340 extends out of the sleeve 330, the detected flow of the flow detector 380 is negative. That is to say, the flow detector 380 can detect the flow direction when the liquid passes through and perform cumulative detection of the flow according to the flow rate of the liquid. In this way, when the pipeline 400 sinks in a certain direction, the detected flow of the corresponding flow detector 380 in this direction is positive and the value is the largest. Correspondingly, the detected flow of the corresponding flow detector 380 completely deviating from this direction (i.e., the opposite side of this direction) is negative and the value is the largest.

[0057] Furthermore, please refer to Figure 9 , to improve the detection accuracy of the flow detector 380, a first partition 311 and a second partition 312 are arranged in the detection chamber 310. The first partition 311 and the second partition 312 sequentially divide the inside of the detection chamber 310 into a first chamber 313, an installation chamber 314, and a second chamber 315. The second chamber 315 is communicated with the inside of the sleeve 330. A spiral coil 350 is arranged in the installation chamber 314. Both ends of the spiral coil 350 are communicated with the first chamber 313 and the second chamber 315 respectively. The flow detector 380 is arranged in the flow channel of the spiral coil 350;

[0058] Specifically, when the detection rod 340 retracts into the inside of the sleeve 330 due to the sinking of the pipeline 400, the liquid in the sleeve 330 can be squeezed into the second chamber 315, and then the liquid spirally flows into the first chamber 313 through the spiral coil 350; when the detection rod 340 extends out of the sleeve 330 due to the sinking of the pipeline 400, the liquid in the first chamber 313 can be sucked into the first chamber 313 through the spiral coil 350; when the liquid flows in the flow channel of the spiral coil 350, the flow detector 380 can detect the flow rate of the flowing liquid.

[0059] It should be noted that the cross-section of the flow channel of the spiral coiled pipe 350 provided in this embodiment is much smaller than the cross-section of the sleeve 330. In this way, even if the telescopic stroke of the detection rod 340 is small, that is, the flow stroke of the liquid in the sleeve 330 is small, due to the cross-section of the flow channel of the spiral coiled pipe 350 being much smaller than the cross-section of the sleeve 330, the flow stroke of the liquid flowing through the spiral coiled pipe 350 is greatly increased, so as to achieve the effect of amplifying the liquid flow stroke, facilitating the flow detector 380 to more accurately detect the flow value and improving the sedimentation detection accuracy.

[0060] In addition, please refer to Figure 9 , a flexible bladder 370 communicating with the spiral coiled pipe 350 is provided in the first chamber 313, and a through hole 316 communicating with the outside is opened on one side of the first chamber 313;

[0061] Specifically, the flexible bladder 370 can be adaptively expanded or contracted according to the liquid volume contained therein. That is to say, when the liquid is squeezed into the flexible bladder 370, the flexible bladder 370 expands and its internal volume increases. When the liquid is sucked out, the internal volume of the flexible bladder 370 decreases and it contracts; when the flexible bladder 370 expands or contracts, the gas in the first chamber 313 can freely enter and exit through the through hole 316, so as to maintain the balance of the internal air pressure in the first chamber 313; the setting of the flexible bladder 370 can flexibly wrap and contain the liquid and effectively isolate it, thus avoiding liquid leakage and affecting the detection accuracy.

[0062] In yet another embodiment, please refer to Figure 10 and Figure 13 , considering that when the pipeline 400 settles, the pipeline 400 will have a relative offset with the upper housing 120 and the lower housing 130. In this way, the axis of the pipeline 400 no longer coincides with the axes of the upper housing 120 and the lower housing 130. In order to prevent the upper housing 120 and the lower housing 130 from affecting the natural settlement of the pipeline 400 and at the same time avoid the surrounding soil blocks from entering the internal space of the upper housing 120 and the lower housing 130 and affecting the detection process, flexible seals 160 wrapping the pipeline 400 are provided on both sides of the upper housing 120 and the lower housing 130;

[0063] Specifically, the flexible seal 160 can seal the openings on both sides of the cylindrical structure formed by enclosing the upper inner liner 200 and the lower inner liner 210, and can be adaptively bent and deformed according to the settlement of the pipeline 400, so as to avoid the surrounding soil blocks from entering the cylindrical structure and at the same time not affecting the natural settlement displacement of the pipeline 400 itself.

[0064] Furthermore, please refer to Figure 13, two sets of flexible seals 160 on the same side of the upper housing 120 and the lower housing 130 are fitted and spliced with each other; wherein, a sealing groove is provided on the splicing surface of the flexible seal 160 of the upper housing 120, and a sealing strip adapted to the sealing groove is provided on the splicing surface of the flexible seal 160 of the lower housing 130;

[0065] During installation, the upper housing 120 and the lower housing 130 are respectively buckled from the upper and lower sides of the pipeline 400 to wrap the pipeline 400 inside, and then the two sets of flexible seals 160 on the same side are spliced, so that the sealing strip is embedded into the corresponding sealing groove, thereby realizing the sealing of the openings on both sides of the cylindrical structure.

[0066] Furthermore, please refer to Figure 10 , Figure 11 and Figure 12 , in order to improve the sealing effect at the contact position between the flexible seal 160 and the pipeline 400, the flexible seal 160 includes an annular airbag 161 and a conical airbag 162 that communicate with each other. The annular airbag 161 is embedded in the corresponding upper housing 120 or lower housing 130, and an expansion part 164 that fits the outer wall of the pipeline 400 is provided at one end of the conical airbag 162 away from the annular airbag 161;

[0067] Specifically, when the upper housing 120 and the lower housing 130 are spliced, the annular airbag 161 of the flexible seal 160 can be squeezed, so that the gas in the annular airbag 161 enters the expansion part 164 through the conical airbag 162, and then the expansion part 164 expands and expands and clings to the outer wall of the pipeline 400, so as to improve the sealing between the expansion part 164 and the pipeline 400, and prevent external broken soil blocks from seeping into the inside of the detection device through the gap between the flexible seal 160 and the pipeline 400 and causing damage to the detection part 300.

[0068] Please refer to Figure 11 , Figure 14 , Figure 15 and Figure 16 , in order to improve the expansion and sealing effect of the expansion part 164, a recess 131 is provided on the lower housing 130, an extrusion airbag 132 is provided in the recess 131, a first air hole 133 is provided on one side of the extrusion airbag 132, and a second air hole 163 is provided on the side corresponding to the annular airbag 161. The first air hole 133 is communicated with the second air hole 163; a convex part 121 adapted to the recess 131 is provided on the upper housing 120;

[0069] Specifically, when the upper housing 120 is spliced with the lower housing 130, the convex portion 121 of the upper housing 120 just inserts into the concave portion 131 of the lower housing 130, thereby squeezing the extrusion airbag 132, so that the gas in the extrusion airbag 132 enters the annular airbag 161 through the first air hole 133 and the second air hole 163, and then enters the expansion portion 164 through the conical airbag 162 to realize the automatic expansion of the expansion portion 164.

[0070] The specific implementation manners of the present embodiment have been described above, but the present embodiment is not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative rather than restrictive. Under the inspiration of the present embodiment, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of the present embodiment.

Claims

1. A pipeline settlement detection device, characterized in that: include: A base (100) having two groups of guide studs (110) symmetrically and vertically fixed on both sides thereof, wherein the upper ends of the guide studs (110) are threadedly connected with adjustment nuts (140); An upper casing (120) is movably sleeved on the guide stud (110), and an upper liner (200) is embedded in the upper casing (120); A lower casing (130) is detachably connected to the upper casing (120); a lower inner liner (210) is embedded in the lower casing (130); the lower inner liner (210) and the upper inner liner (200) are spliced ​​to form a cylindrical structure for accommodating a pipeline (400); A reinforcing stud (150) is threadedly connected to the middle of the base (100), and the reinforcing stud (150) abuts against the bottom of the lower casing (130); A detection member (300) is provided in a plurality of groups and is evenly distributed in the cylindrical structure in the circumferential direction. The detection member (300) comprises a sleeve (330). The sleeve (330) is fixed in the cylindrical structure via a mounting frame (320). One end of the sleeve (330) is slidably provided with a detection rod (340) that abuts against an outer wall of the pipeline (400); One end of the sleeve (330) away from the detection rod (340) is connected to the detection chamber (310); the sleeve (330) is filled with liquid; and a flow detector (380) for detecting the flow of the liquid is arranged in the detection chamber (310); A first partition (311) and a second partition (312) are arranged in the detection chamber (310); the first partition (311) and the second partition (312) sequentially divide the detection chamber (310) into a first chamber (313), a mounting chamber (314) and a second chamber (315); the second chamber (315) is communicated with the interior of the sleeve (330); a spiral coil (350) is arranged in the mounting chamber (314); two ends of the spiral coil (350) are respectively communicated with the first chamber (313) and the second chamber (315); and the flow detector (380) is arranged in the flow passage of the spiral coil (350); A flexible capsule (370) communicating with the spiral coil (350) is disposed in the first chamber (313), and a through hole (316) communicating with the outside is provided on one side of the first chamber (313).

2. A pipeline settlement detection device according to claim 1, characterized in that: A ball sleeve (341) is provided at one end of the detection rod (340) facing the pipeline (400), and a ball (342) is movably embedded in the ball sleeve (341).

3. A pipeline settlement detection device according to claim 1, characterized in that: A supporting spring (360) is arranged in the sleeve (330) and is in contact with the detection rod (340).

4. A pipeline settlement detection device according to claim 1, characterized in that: Flexible sealing members (160) for wrapping the pipeline (400) are provided on both sides of the upper casing (120) and the lower casing (130).

5. A pipeline settlement detection device according to claim 4, characterized in that: The two groups of flexible sealing members (160) on the same side of the upper shell (120) and the lower shell (130) are adapted to be spliced ​​with each other; a sealing groove is provided on the splicing surface of the flexible sealing member (160) of the upper shell (120), and a sealing strip adapted to the sealing groove is provided on the splicing surface of the flexible sealing member (160) of the lower shell (130).

6. A pipeline settlement detection device according to claim 4, characterized in that: The flexible sealing member (160) comprises an annular airbag (161) and a conical airbag (162) which are connected to each other, and an expansion portion (164) which is in contact with the outer wall of the pipe (400) is provided at one end of the conical airbag (162) away from the annular airbag (161).

7. A pipeline settlement detection device according to claim 6, characterized in that: The lower shell (130) is provided with a recessed portion (131), an extrusion airbag (132) is arranged in the recessed portion (131), a first air hole (133) is arranged on one side of the extrusion airbag (132), and a second air hole (163) is arranged on one side of the corresponding annular airbag (161), and the first air hole (133) is communicated with the second air hole (163); the upper shell (120) is provided with a protrusion (121) adapted to the recessed portion (131).

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