Displacement deformation monitoring structure and monitoring method for large-pipe-diameter water conveying pipeline

Abstract

The invention discloses a large-pipe-diameter water conveying pipeline dislocation deformation monitoring structure and monitoring method, and belongs to the technical field of deformation measurement of water conveying pipelines in water conservancy and hydropower engineering. The structure comprises a pipeline A, a pipeline B, a two-way dip angle detection mechanism, a displacement detection mechanism and a data collecting and processing mechanism, one end of the pipeline B is connected with one end of the pipeline A through an expansion joint, and the two-way dip angle detection mechanism and the displacement detection mechanism are both connected with the pipeline A and the pipeline B; the bidirectional inclination angle detection mechanism and the displacement detection mechanism both stride across the expansion joint, and the data acquisition and processing mechanism is electrically connected with the bidirectional inclination angle detection mechanism and the displacement detection mechanism. High-precision automatic monitoring of vertical dislocation deformation delta H and horizontal dislocation deformation delta S of the water conveying pipeline is achieved, the dislocation deformation problem of the water conveying pipeline is found and handled in time, manual intervention is reduced, working efficiency is improved, safety accidents caused by dislocation deformation of the pipeline are effectively avoided, and long-term operation safety of the water conveying pipeline is guaranteed.

Description

Technical Field

[0001] The invention relates to a large-diameter water pipeline displacement deformation monitoring structure and a monitoring method, belonging to the technical field of water pipeline deformation measurement in water conservancy and hydropower engineering. Background Art

[0002] With the advancement of national water network construction, a large number of water pipelines have been built. How to ensure the long-term operation safety of these water pipelines is particularly important. Due to unfavorable conditions such as uneven foundation settlement or deformation of surrounding structures, as well as impact loads caused by pipe filling and discharge, the pipe connection parts have obvious displacement deformation, which in turn causes pipe leakage, damage or even breakage, which is the main problem affecting the overall operation safety of water pipelines.

[0003] At present, the displacement and deformation of pipelines are usually monitored by manual inspection and measurement with a steel ruler or installation of a joint meter. However, due to the long water pipelines, some of which are even tens of kilometers long, the traditional manual inspection and measurement methods have extremely low work efficiency and are subject to problems such as missed detection, false alarms, and poor timeliness. Although the installation of a joint meter can achieve automated observation, it can only measure the axial opening and closing of the pipeline and cannot accurately obtain the displacement and deformation of the pipeline in the vertical and horizontal directions. Moreover, for large-diameter water pipelines, the traditional methods are limited by the measuring instrument's own range. When the pipeline undergoes a large displacement and deformation, the instrument is easily damaged, resulting in the inability to obtain effective measurement data.

[0004] The Chinese patent document with publication number CN209559118U discloses a device for measuring the deformation of the splicing seam of a pipe gallery, which can independently and accurately measure the splicing opening amount and differential settlement of the splicing seam of the pipe gallery. However, the device cannot measure the displacement deformation of the pipe gallery in the horizontal direction. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a pipe diameter water pipeline displacement deformation monitoring structure and monitoring method.

[0006] The present invention is achieved through the following technical solutions:

[0007] A large-diameter water pipeline dislocation deformation monitoring structure comprises a pipeline A, a pipeline B, a bidirectional inclination detection mechanism, a displacement detection mechanism and a data acquisition and processing mechanism, one end of the pipeline B is connected to one end of the pipeline A through an expansion joint, the bidirectional inclination detection mechanism and the displacement detection mechanism are both connected to the pipeline A and the pipeline B, and the bidirectional inclination detection mechanism and the displacement detection mechanism both cross the expansion joint, and the data acquisition and processing mechanism is electrically connected to the bidirectional inclination detection mechanism and the displacement detection mechanism.

[0008] The bidirectional inclination detection mechanism includes a bidirectional inclination detection component, one end of the bidirectional inclination detection component is connected to a base A through a spring A, and the base A is arranged on the outer wall of the pipe A, and the other end of the bidirectional inclination detection component is connected to a base B through a spring B, and the base B is arranged on the outer wall of the pipe B.

[0009] The bidirectional inclination detection component is a biaxial inclinometer, and the biaxial inclinometer is electrically connected to the data acquisition and processing mechanism.

[0010] The base A and the base B are both curved rod ball head rod end joint bearings.

[0011] The displacement detection mechanism includes a base C, a pulley, an angular displacement detection component and a pull wire. The base C is arranged on the outer wall of the pipeline A. One end of the pulley center axis is rotatably connected to the outer wall of the pipeline B. The angular displacement detection component is arranged on the outer wall of the pipeline B and is used to detect the angular displacement of the pulley. One end of the pull wire is connected to the base C, the middle part is passed around the pulley, and the other end is connected to a heavy hammer block.

[0012] The base C is a curved rod ball head rod end joint bearing;

[0013] The angular displacement detection component is a rotary encoder connected to the central axis of the pulley and electrically connected to the data acquisition and processing mechanism;

[0014] The pull wire is made of stainless steel wire.

[0015] The pull wire between the base C and the pulley is arranged in parallel with the bidirectional inclination detection mechanism.

[0016] The data acquisition and processing mechanism includes a controller, a wireless transmission module and a central control system. The controller is electrically connected to the bidirectional tilt detection mechanism and the displacement detection mechanism. The wireless transmission module is electrically connected to the controller. The central control system is wirelessly connected to the wireless transmission module.

[0017] A monitoring method for a large-diameter water pipeline displacement deformation monitoring structure comprises the following steps:

[0018] Step 1. In the initial state, that is, when the water pipeline has not been dislocated or deformed, pipeline B is coaxially arranged with pipeline A, the bidirectional inclination detection mechanism is arranged along the axial direction of pipeline B, and the angles of the bidirectional inclination detection mechanism itself in the horizontal direction and the vertical direction are both 0°, the pull line between the base C and the pulley is parallel to the bidirectional inclination detection mechanism, and it is known that the length of the pull line between the base C and the pulley is L0 at this time;

[0019] Step 2: The inclination angle α in the vertical direction and the inclination angle β in the horizontal direction are detected in real time by the bidirectional inclination detection mechanism, and the angular displacement of the pulley is detected in real time by the angular displacement detection component, and the relevant information is transmitted to the data acquisition and processing mechanism respectively;

[0020] Step 3: When the expansion joint of the water pipeline is deformed, the data acquisition and processing mechanism calculates the vertical displacement ΔH and horizontal displacement ΔS of the water pipeline at the expansion joint according to the inclination angle α, the inclination angle β and the angular displacement of the pulley.

[0021] The method in step 3 in which the data acquisition and processing mechanism calculates the vertical displacement deformation ΔH and the horizontal displacement deformation ΔS of the water delivery pipeline at the expansion joint according to the inclination angle α, the inclination angle β and the angular displacement of the pulley comprises the following steps:

[0022] Step 1: Calculate the change in length ΔL of the cable between the base C and the pulley based on the angular displacement of the pulley, the known diameter of the cable, and the distance from the tangent point of the cable and the pulley to the center of the pulley. i ;

[0023] Steps: Calculate the vertical displacement deformation ΔH and horizontal displacement deformation ΔS of the water pipeline at the expansion joint according to the following formula:

[0024] ΔH=(L0+ΔL i )×sinα,

[0025] ΔS=(L0+ΔL i )×sinβ.

[0026] The beneficial effects of the present invention are:

[0027] 1. It realizes high-precision automatic monitoring of vertical displacement deformation ΔH and horizontal displacement deformation ΔS of water pipelines, which can timely discover and deal with displacement deformation problems of water pipelines, reduce manual intervention, improve work efficiency, effectively avoid safety accidents caused by pipeline displacement deformation, and ensure the long-term operation safety of water pipelines.

[0028] 2. The ends of the dual-axis inclinometer are connected to the outer walls of pipes A and B by a flexible connection method combining a spring and a curved rod ball head rod end joint bearing, avoiding the risk of damage to the dual-axis inclinometer when a large displacement deformation occurs in the water pipeline due to the rigid connection with the pipeline. At the same time, it ensures that the position adjustment of the dual-axis inclinometer is synchronized and coordinated with the displacement deformation of the water pipeline at the expansion joint, ensuring that the displacement deformation monitoring work is carried out normally in the long term and the data is valid and reliable.

[0029] 3. By using the alignment line method in which the dual-axis inclinometer is always kept parallel to the base C and the pulley, the inclination angle α in the vertical direction and the inclination angle β in the horizontal direction of the dual-axis inclinometer, as well as the movable displacement of the pull wire, can be obtained respectively, so as to realize the vertical displacement deformation and horizontal displacement deformation monitoring of the adjacent pipelines A and B in space, which has the advantages of simple and easy-to-understand measurement principle and high accuracy of data results.

[0030] 4. The measurement range of pipeline displacement and deformation depends on the length of the pull wire. Therefore, the measurement range is significantly increased compared with the existing technical means. It can prevent large-diameter water pipelines from being damaged when large displacement and deformation occur. It can achieve a large range and long-term stable operation, ensuring the continuity and reliability of the monitoring data. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of the present invention in the initial state, that is, when the water delivery pipeline has not been dislocated or deformed;

[0032] Figure 2 It is a schematic diagram of the structure of the pipeline A of the present invention when the pipeline A is displaced and deformed relative to the pipeline B in the vertical direction;

[0033] Figure 3 It is a schematic diagram of the structure when the pipeline A of the present invention is displaced and deformed relative to the pipeline B in the horizontal direction.

[0034] In the figure: 1-pipe A, 2-pipe B, 3-expansion joint, 4-base A, 401-spring A, 5-base B, 501-spring B, 6-bidirectional inclination detection component, 7-base C, 8-pulley, 9-pull wire, 10-weight block, 11-data acquisition and processing mechanism. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0036] like Figures 1 to 3As shown, a large-diameter water pipeline displacement deformation monitoring structure described in the present invention includes a pipeline A1, a pipeline B2, a bidirectional inclination detection mechanism, a displacement detection mechanism and a data acquisition and processing mechanism 11, one end of the pipeline B2 is connected to one end of the pipeline A1 through a telescopic joint 3, the bidirectional inclination detection mechanism and the displacement detection mechanism are both connected to the pipeline A1 and the pipeline B2, and the bidirectional inclination detection mechanism and the displacement detection mechanism both cross the telescopic joint 3, and the data acquisition and processing mechanism 11 is electrically connected to the bidirectional inclination detection mechanism and the displacement detection mechanism. When in use, the bidirectional inclination detection mechanism detects its own inclination α in the vertical direction and the inclination β in the horizontal direction, and transmits the relevant information to the data acquisition and processing mechanism 11, the displacement detection mechanism detects the displacement change caused by the displacement deformation of the water pipeline at the telescopic joint 3, and transmits the relevant information to the data acquisition and processing mechanism 11, and the data acquisition and processing mechanism 11 calculates the vertical displacement deformation ΔH and the horizontal displacement deformation ΔS of the water pipeline at the telescopic joint 3. It realizes high-precision automatic monitoring of the vertical displacement deformation ΔH and horizontal displacement deformation ΔS of the water supply pipeline, which can timely discover and deal with the displacement deformation problem of the water supply pipeline, reduce manual intervention, improve work efficiency, effectively avoid safety accidents caused by pipeline displacement deformation, and ensure the long-term operation safety of the water supply pipeline.

[0037] The bidirectional inclination detection mechanism includes a bidirectional inclination detection component 6, one end of the bidirectional inclination detection component 6 is connected to a base A4 through a spring A401, and the base A4 is arranged on the outer wall of the pipe A1, and the other end of the bidirectional inclination detection component 6 is connected to a base B5 through a spring B501, and the base B5 is arranged on the outer wall of the pipe B2.

[0038] The bidirectional inclination detection assembly 6 is a biaxial inclinometer, and the biaxial inclinometer is electrically connected to the data acquisition and processing mechanism 11. When in use, the biaxial inclinometer is electrically connected to the controller, and the biaxial inclinometer can simultaneously measure its own angle in the vertical direction and the angle in the horizontal direction.

[0039] The base A4 and the base B5 are both curved rod ball end joint bearings. When in use, the ends of the dual-axis inclinometer are connected to the outer walls of the pipeline A1 and the pipeline B2 by a flexible connection method combining a spring and a curved rod ball end joint bearing, avoiding the risk of damage to the dual-axis inclinometer when a large displacement deformation occurs in the water pipeline due to the rigid connection with the pipeline, and at the same time ensuring that the position adjustment of the dual-axis inclinometer is synchronized and coordinated with the displacement deformation of the water pipeline at the expansion joint 3, ensuring that the displacement deformation monitoring work is carried out normally for a long time, and the data is valid and reliable.

[0040] The displacement detection mechanism includes a base C7, a pulley 8, an angular displacement detection component and a pull wire 9. The base C7 is arranged on the outer wall of the pipeline A1. One end of the central axis of the pulley 8 is rotatably connected to the outer wall of the pipeline B2. The angular displacement detection component is arranged on the outer wall of the pipeline B2 and is used to detect the angular displacement of the pulley 8. One end of the pull wire 9 is connected to the base C7, the middle part is passed around the pulley 8, and the other end is connected to a heavy hammer block 10.

[0041] The base C7 is a curved rod ball head rod end joint bearing;

[0042] The angular displacement detection component is a rotary encoder, connected to the central axis of the pulley 8 and electrically connected to the data acquisition and processing mechanism 11;

[0043] The pull wire 9 is made of stainless steel wire. The angular displacement of the pulley 8 is detected by a rotary encoder, so as to facilitate the calculation of the movable displacement of the pull wire 9. The rotary encoder is electrically connected to the controller.

[0044] The pull wire 9 between the base C7 and the pulley 8 is arranged in parallel with the bidirectional inclination detection mechanism.

[0045] The data acquisition and processing mechanism 11 includes a controller, a wireless transmission module and a central control system. The controller is electrically connected to the bidirectional tilt detection mechanism and the displacement detection mechanism. The wireless transmission module is electrically connected to the controller. The central control system is wirelessly connected to the wireless transmission module.

[0046] A monitoring method for a large-diameter water pipeline displacement deformation monitoring structure comprises the following steps:

[0047] Step 1: In the initial state, that is, when the water pipeline has not been dislocated or deformed, the pipeline B2 is coaxially arranged with the pipeline A1, the bidirectional inclination detection mechanism is arranged along the axial direction of the pipeline B2, and the angles of the bidirectional inclination detection mechanism itself in the horizontal and vertical directions are both 0°, the cable 9 between the base C7 and the pulley 8 is parallel to the bidirectional inclination detection mechanism, and it is known that the length of the cable 9 between the base C7 and the pulley 8 is L0. In the initial state, the axial directions of the pipelines A1 and B2 are assumed to be in the horizontal direction.

[0048] Step 2: The inclination angle α in the vertical direction and the inclination angle β in the horizontal direction are detected in real time by the bidirectional inclination detection mechanism, and the angular displacement of the pulley 8 is detected in real time by the angular displacement detection component, and the relevant information is transmitted to the data acquisition and processing mechanism 11 respectively;

[0049] Step 3: When the expansion joint 3 of the water pipeline is deformed, the data acquisition and processing mechanism 11 calculates the vertical displacement ΔH and horizontal displacement ΔS of the water pipeline at the expansion joint 3 according to the inclination angle α, the inclination angle β and the angular displacement of the pulley 8.

[0050] The method in step 3 in which the data acquisition and processing mechanism 11 calculates the vertical displacement deformation ΔH and the horizontal displacement deformation ΔS of the water delivery pipeline at the expansion joint 3 according to the inclination angle α, the inclination angle β and the angular displacement of the pulley 8 comprises the following steps:

[0051] Step 1: Calculate the length change ΔL of the cable 9 between the base C7 and the pulley 8 according to the angular displacement of the pulley 8, the known diameter of the cable 9, and the distance from the tangent point of the cable 9 and the pulley 8 to the center of the pulley 8. i ;

[0052] Step 2: Calculate the vertical displacement deformation ΔH and horizontal displacement deformation ΔS of the water pipeline at the expansion joint 3 according to the following formula:

[0053] ΔH=(L0+ΔL i )×sinα,

[0054] ΔS=(L0+ΔL i )×sinβ.

[0055] When the vertical displacement deformation ΔH or the horizontal displacement deformation ΔS exceeds the threshold value set by the controller, the controller transmits the relevant alarm information to the central control system through the wireless transmission module.

Claims

1. A large-diameter water pipeline displacement deformation monitoring structure, characterized by: The invention comprises a pipeline A (1), a pipeline B (2), a bidirectional inclination detection mechanism, a displacement detection mechanism and a data acquisition and processing mechanism (11), wherein one end of the pipeline B (2) is connected to one end of the pipeline A (1) via a telescopic joint (3), the bidirectional inclination detection mechanism and the displacement detection mechanism are both connected to the pipeline A (1) and the pipeline B (2), and the bidirectional inclination detection mechanism and the displacement detection mechanism both cross the telescopic joint (3), and the data acquisition and processing mechanism (11) is electrically connected to the bidirectional inclination detection mechanism and the displacement detection mechanism.

2. The large-diameter water pipeline displacement deformation monitoring structure according to claim 1, characterized in that: The bidirectional inclination detection mechanism comprises a bidirectional inclination detection component (6), one end of the bidirectional inclination detection component (6) is connected to a base A (4) via a spring A (401), and the base A (4) is arranged on the outer wall of a pipe A (1), and the other end of the bidirectional inclination detection component (6) is connected to a base B (5) via a spring B (501), and the base B (5) is arranged on the outer wall of a pipe B (2).

3. The large-diameter water pipeline displacement deformation monitoring structure according to claim 2, characterized in that: The bidirectional inclination detection component (6) is a dual-axis inclinometer, and the dual-axis inclinometer is electrically connected to the data acquisition and processing mechanism (11).

4. The large-diameter water pipeline displacement deformation monitoring structure according to claim 2, characterized in that: The base A (4) and the base B (5) are both curved rod ball head rod end joint bearings.

5. The large-diameter water pipeline displacement deformation monitoring structure according to claim 1, characterized in that: The displacement detection mechanism comprises a base C (7), a pulley (8), an angular displacement detection assembly and a pull wire (9), wherein the base C (7) is arranged on the outer wall of the pipeline A (1), one end of the central axis of the pulley (8) is rotatably connected to the outer wall of the pipeline B (2), the angular displacement detection assembly is arranged on the outer wall of the pipeline B (2) and is used to detect the angular displacement of the pulley (8), one end of the pull wire (9) is connected to the base C (7), the middle part of the pull wire (9) is passed around the pulley (8), and the other end is connected to a weight block (10).

6. The large-diameter water pipeline displacement deformation monitoring structure according to claim 5, characterized in that: The base C (7) is a curved rod ball head rod end joint bearing; The angular displacement detection component is a rotary encoder connected to the central axis of the pulley (8) and electrically connected to the data acquisition and processing mechanism (11); The pull wire (9) is made of stainless steel wire.

7. The large-diameter water pipeline displacement deformation monitoring structure according to claim 5, characterized in that: The pull wire (9) located between the base C (7) and the pulley (8) is arranged in parallel with the bidirectional inclination detection mechanism.

8. The large-diameter water pipeline displacement deformation monitoring structure according to claim 1, characterized in that: The data acquisition and processing mechanism (11) comprises a controller, a wireless transmission module and a central control system. The controller is electrically connected to the bidirectional tilt detection mechanism and the displacement detection mechanism. The wireless transmission module is electrically connected to the controller. The central control system is wirelessly connected to the wireless transmission module.

9. A monitoring method for the large-diameter water pipeline displacement deformation monitoring structure according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: In the initial state, that is, when the water pipeline has not been dislocated or deformed, the pipeline B (2) and the pipeline A (1) are arranged coaxially, the bidirectional inclination detection mechanism is arranged along the axial direction of the pipeline B (2), and the angles of the bidirectional inclination detection mechanism itself in the horizontal direction and the vertical direction are both 0°, the pull line (9) between the base C (7) and the pulley (8) is parallel to the bidirectional inclination detection mechanism, and it is known that the length of the pull line (9) between the base C (7) and the pulley (8) is L0; Step 2: The inclination angle α in the vertical direction and the inclination angle β in the horizontal direction are detected in real time by the bidirectional inclination detection mechanism, and the angular displacement of the pulley (8) is detected in real time by the angular displacement detection component, and the relevant information is transmitted to the data acquisition and processing mechanism (11) respectively; Step 3: When the expansion joint (3) of the water pipeline is displaced and deformed, the data acquisition and processing mechanism (11) calculates the vertical displaced deformation ΔH and the horizontal displaced deformation ΔS of the water pipeline at the expansion joint (3) based on the inclination angle α, the inclination angle β and the angular displacement of the pulley (8).

10. The monitoring method of the large-diameter water pipeline displacement deformation monitoring structure according to claim 9, characterized in that: The method in step 3 in which the data acquisition and processing mechanism (11) calculates the vertical displacement deformation ΔH and the horizontal displacement deformation ΔS of the water pipeline at the expansion joint (3) according to the inclination angle α, the inclination angle β and the angular displacement of the pulley (8) comprises the following steps: Step 1: Calculate the length change ΔL of the cable (9) between the base C (7) and the pulley (8) based on the angular displacement of the pulley (8), the known diameter of the cable (9), and the distance from the tangent point between the cable (9) and the pulley (8) to the center of the pulley (8). i ; Step 2: Calculate the vertical displacement deformation ΔH and horizontal displacement deformation ΔS of the water pipeline at the expansion joint (3) according to the following formula: ΔH=(L0+ΔL i )×sinα, ΔS=(L0+ΔL i )×sinβ。

Images