A water hammer absorbing device and method for pipeline monitoring

Abstract

The application provides a pipeline monitoring water hammer absorbing device and method, relates to the field of water hammer absorbing devices, and aims at the problem that the current water hammer absorbing device is prone to leakage, which leads to subgrade settlement and collapse. A monitoring assembly is arranged in the water hammer absorbing assembly. The water hammer absorbing assembly can absorb abnormal pressure fluctuation in the pipeline. The monitoring assembly can measure the pipeline pressure and displacement parameters at the position of the water hammer absorbing assembly, obtain the operation condition of the pipeline, and send the operation condition to a remote controller, so that the operation condition of the pipeline is monitored.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of water hammer absorbing device, in particular to a pipeline monitoring water hammer absorbing device and method. BACKGROUND

[0002] In the process of water delivery, due to the water flow impact on the pipeline when the water pump starts and stops, a serious water hammer is generated, the instantaneous pressure generated by the water hammer can reach several times or even dozens of times of the normal working pressure in the pipeline. Such large amplitude pressure fluctuation can cause strong vibration and noise of the pipeline system, and can also damage the valve joint and have a great destructive effect on the pipeline system. In order to prevent the occurrence of water hammer phenomenon and minimize the impact caused by pipeline damage, a water hammer absorbing device is usually used.

[0003] The distribution position of the water hammer absorbing device will also generate a certain vibration when absorbing the fluctuating pressure of the water flow in the pipeline. The sealing and stability of the water hammer absorbing device and the pipeline are poor, which causes the loosening of the flange position of the water hammer absorbing device and the pipeline, and causes problems such as leakage. The pipeline leakage will cause a large area of cavity at the buried position, which will cause the roadbed settlement in the municipal engineering pipeline and cannot be monitored and warned in time, further inducing the pavement collapse. Especially in the collapsible loess area and geological settlement area, the influence on the stratum of the pipeline layout area will be expanded, causing large-scale settlement. SUMMARY

[0004] The purpose of the present application is to solve the defects existing in the prior art, provide a pipeline monitoring water hammer absorbing device and method, a monitoring assembly is arranged in the water hammer absorbing assembly, the water hammer absorbing assembly can absorb the abnormal fluctuation of the pressure in the pipeline, the monitoring assembly can measure the pipeline pressure and displacement parameters at the position of the water hammer absorbing assembly, obtain the running condition of the pipeline and send it to the remote controller, and realize the monitoring of the running condition of the pipeline.

[0005] The first purpose of the present application is to provide a pipeline monitoring water hammer absorbing device, which adopts the following scheme:

[0006] Comprising:

[0007] The water hammer absorbing assembly comprises a shell and a gas bag in the shell, and the open end of the shell is connected to the pipeline to be monitored;

[0008] The monitoring assembly is installed in the gas bag and comprises a positioning element and a pressure sensor. The positioning element is fixed at the connection position of the gas bag and the shell, so that the position of the positioning element relative to the shell remains fixed. The pressure sensor measures the pressure in the gas bag. The positioning element and the pressure sensor are connected to the controller.

[0009] Further, the shell comprises a cavity with an opening, the opening of the shell is located at the cylinder segment, the air bag is located at the non-cylinder segment position in the cavity, and the cylinder segment is connected to the pipeline to be monitored.

[0010] Further, a hole plate is arranged in the cylinder segment of the shell, and the fluid in the pipeline to be monitored passes through the hole plate and then contacts the air bag.

[0011] Further, the water hammer absorbing assembly is connected to the pipeline through the groove tee joint, the pipeline and the groove tee joint are connected and fixed through the groove pipe clamp, and the cylinder segment and the end joint of the groove tee joint are connected and fixed through the groove pipe clamp.

[0012] Further, the monitoring assembly further comprises a 3D camera mechanism and an ultrasonic flow sensor, and the 3D camera mechanism and the ultrasonic flow sensor are connected to the controller respectively to send the collected image signals and sound wave signals to the controller.

[0013] Further, the monitoring assembly further comprises a power supply assembly and a communication assembly, the communication assembly can send data to a data center, and the power supply assembly can supply power to the constituent elements of the monitoring assembly.

[0014] Further, the air bag is partially fixed on the inner wall of the shell, and the positioning element of the monitoring element is fixed at the connection position of the air bag and the shell, so that the position of the positioning element relative to the shell remains fixed.

[0015] Further, when the position of the water hammer absorbing assembly changes due to the settlement caused by the pipeline leakage, the position of the positioning element changes with the position of the water hammer absorbing assembly, and the position change of the water hammer absorbing assembly is measured to judge the settlement condition.

[0016] The second object of the application is to provide a working method of the pipeline monitoring water hammer absorbing device, comprising:

[0017] The shell is installed in the pipeline through the groove tee joint, and the internal cavity of the shell is communicated with the pipeline.

[0018] When the pipeline pressure suddenly rises to be greater than the rated pressure of the pipeline, the air bag is compressed to absorb the water hammer pressure, and when the pipeline pressure decreases to be below the rated pressure, the air bag returns to the original state.

[0019] The monitoring assembly measures the internal pressure of the air bag and the position of the water hammer absorbing assembly, obtains the pipeline pressure and the settlement condition, and judges the blockage and leakage condition according to the pipeline pressure.

[0020] Further, the monitoring assembly further comprises a communication assembly, and the communication assembly can remotely transmit data to a data center.

[0021] Compared with the prior art, the application has the advantages and positive effects that:

[0022] In view of the problem that the water hammer absorbing device is prone to leakage, causing roadbed settlement and collapse, a monitoring assembly is arranged in the water hammer absorbing assembly, the water hammer absorbing assembly can absorb abnormal pressure fluctuation in the pipeline, the monitoring assembly can measure the pipeline pressure and displacement parameters at the position of the water hammer absorbing assembly, obtain the operation condition of the pipeline and send to a remote controller, and the operation condition of the pipeline is monitored. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings constituting a part of this specification provide further understanding of the present application, the illustrative embodiments of the present application and their descriptions serve to explain the present application, and do not constitute improper limitation on the present application.

[0024] Figure 1 The structure schematic diagram of the pipeline monitoring water hammer absorbing device in embodiments 1 and 2 of the present application.

[0025] Figure 2 The distribution schematic diagram of the monitoring assembly in the air bag in embodiments 1 and 2 of the present application.

[0026] Figure 3 The composition schematic diagram of the monitoring assembly in embodiments 1 and 2 of the present application.

[0027] Figure 4 The Figure 3 The local enlarged view of A in FIG.

[0028] In the figure, 1 is a groove tee, 2 is a groove steel pipe, 3 is a groove pipe clamp, 4 is a shell, 5 is a hole plate, 6 is an air bag, 7 is a power supply assembly, 8 is a monitoring assembly, 9 is a positioning element, 10 is a pressure sensor, 11 is a 3D camera mechanism, 12 is an ultrasonic flow sensor, 13 is a storage battery, 14 is a power output system, and 15 is a energy capturing device. DETAILED DESCRIPTION

[0029] Embodiment 1

[0030] In a typical embodiment of the present application, as shown in FIG. Figures 1-4 A pipeline monitoring water hammer absorbing device is given.

[0031] The water hammer absorbing device absorbs fluid fluctuation pressure in the pipeline, but may cause vibration. Due to unstable connection and poor sealing, the connection flange position may be loose, causing leakage and other problems. When the water hammer absorbing device is applied to municipal engineering pipeline, if water leakage occurs, it may cause roadbed settlement and road surface collapse.

[0032] Based on this, the pipeline monitoring water hammer absorbing device is provided in the embodiment, a monitoring assembly 8 is arranged in the water hammer absorbing assembly, the water hammer absorbing assembly can absorb abnormal pressure fluctuation in the pipeline, the monitoring assembly 8 can measure the pipeline pressure and displacement parameter at the position of the water hammer absorbing assembly, obtain the operation condition of the pipeline and send to the remote controller, and the operation condition of the pipeline is monitored.

[0033] Next, the pipeline monitoring water hammer absorbing device will be described in detail in combination with the drawings.

[0034] Referring to Figure 1 , the pipeline monitoring water hammer absorbing device comprises a water hammer absorbing assembly and a monitoring assembly 8, the water hammer absorbing assembly comprises a shell 4 and an air bag 6 in the shell 4, the open end of the shell 4 is connected to the pipeline to be monitored, the air bag 6 can be compressed to reduce the volume and absorb the impact force of the fluid in the pipeline, when the pressure of the fluid in the pipeline is less than the rebound action of the air bag 6, the compressed air bag 6 expands to restore the original state and waits for the next impact force; the monitoring assembly 8 is installed in the cavity of the air bag 6 and can measure the internal pressure of the air bag 6 and the position of the water hammer absorbing assembly, so as to monitor the pipeline pressure and settlement in real time and judge the blockage and leakage according to the pipeline pressure.

[0035] The water hammer absorbing assembly is connected to the pipeline through a groove tee joint 1, and in the embodiment, the groove steel pipe 2 is used as an example for description. It can be understood that in other embodiments, the pipeline can adopt a flange pipe or other structural forms, which can establish the communication relationship between the pipeline and the water hammer absorbing assembly.

[0036] The groove tee joint 1 is arranged between two groove steel pipes 2 of the pipeline, one groove steel pipe 2 is butted with one end joint of the groove tee joint 1 and is connected and fixed through a groove pipe clamp 3, and the other groove steel pipe 2 is butted with the other end joint of the groove tee joint 1 and is connected and fixed through the groove pipe clamp 3, and the third end joint of the groove tee joint 1 is butted with the water hammer absorbing assembly.

[0037] As shown in Figure 1 , the shell 4 comprises a cavity with an opening, the opening position of the shell 4 is a cylinder segment, the cylinder segment is butted with the third end joint of the groove tee joint 1 and is connected and fixed through the groove pipe clamp 3, the pipeline and the water hammer absorbing assembly are communicated through the groove tee joint 1, when the fluid in the pipeline flows through the groove tee joint 1, it can enter the cavity of the shell 4 of the water hammer absorbing assembly, and the air bag 6 in the cavity is subjected to pressure to deform the air bag 6.

[0038] The shell 4 is provided with a hole plate 5 in the cylinder segment, and the fluid in the third end joint of the groove tee joint 1 passes through the hole plate 5 to the cavity, the preset pressure of the air bag 6 is equal to the rated pressure of the pipeline; when the pipeline pressure suddenly rises to be greater than the rated pressure of the pipeline, the air bag 6 is compressed to absorb the water hammer pressure, and when the pipeline pressure decreases to be lower than the rated pressure, the air bag 6 returns to the original state.

[0039] When the water hammer phenomenon occurs in the pipeline, the fluid pressure in the pipeline instantaneously increases, the balance between the air bag 6 and the initial pipeline pressure is changed, the increased fluid pressure is applied to the air bag 6 to cause the air bag 6 to deform, thereby absorbing the pressure fluctuation of the fluid impact in the pipeline, and the fluid flow state in the pipeline is smooth.

[0040] Optionally, the pipeline is connected in the normal pipe laying, the third end joint of the groove tee joint 1 can be randomly changed in angle according to the environmental conditions, and the shell 4 is coaxially connected with the third end joint of the groove tee joint 1.

[0041] The monitoring assembly 8 is arranged in the air bag 6 and is not directly contacted with the fluid medium, and is protected by the air bag 6, so that the monitoring assembly 8 can be operated for a long time.

[0042] As shown in Figure 2 The monitoring assembly 8 includes a positioning element 9, a pressure sensor 10, a 3D camera mechanism 11 and an ultrasonic flow sensor 12, the positioning element 9 can measure the position change of the water hammer absorbing assembly, the pressure sensor 10 obtains the pressure in the air bag 6, the pressure of the air bag 6 corresponds to the running pressure of the fluid in the pipeline, when the fluid in the pipeline runs at the rated pressure, the pressure of the air bag 6 measured by the pressure sensor 10 is the fluid pressure in the pipeline, when the air bag 6 is deformed under pressure, the internal gas is also compressed to cause the pressure to increase, and the pressure in the air bag 6 measured by the pressure sensor 10 is the fluid pressure in the pipeline.

[0043] The 3D camera 11 detects the flow state of the water flow in the pipeline and the settlement displacement of the pipeline in real time, and alarms when the flow state and displacement are abnormal, prompting the staff to pay attention and handle the danger in time. The sound wave of the ultrasonic flow sensor 12 carries the information of the flow rate of the fluid when it propagates in the pipeline, and the flow rate of the fluid can be detected by the received ultrasonic wave, so as to convert the flow rate into flow rate. The ultrasonic sensor can detect the flow rate of the pipeline in real time, and alarm when the flow rate is abnormal, reminding the staff to pay attention and handle the danger in time. By measuring the pressure change, the running condition of the fluid in the pipeline can be represented. When the measured pressure is lower than the rated pressure of the pipeline and maintains for a certain time, it is judged that the pipeline upstream of the water hammer absorption assembly installation position leaks; when the measured pressure is higher than the rated pressure of the pipeline and maintains for a certain time, it is judged that the downstream of the water hammer absorption assembly installation position is blocked; when the measured pressure is higher than the rated pressure of the pipeline and less than a certain time, it is judged that water hammer impact occurs in the pipeline.

[0044] The air bag 6 is partially fixed on the inner wall of the shell 4, and the positioning element 9 of the monitoring element is fixed at the connection position of the air bag 6 and the shell 4, so that the position of the positioning element 9 remains fixed relative to the shell 4. When the air bag 6 deforms due to the impact of the fluid in the pipeline, the position of the positioning element 9 does not change with the deformation of the air bag 6, reducing the influence of the measurement accuracy of the positioning element 9 during water hammer absorption.

[0045] When the pipeline leakage causes settlement and changes the position of the water hammer absorption assembly, the position of the positioning element 9 changes with the position of the water hammer absorption assembly, and the position change of the water hammer absorption assembly is measured to determine the settlement condition.

[0046] The monitoring assembly 8 also includes a communication assembly and a power supply assembly 7. The communication assembly can transmit data to the data center for statistical analysis and real-time monitoring. The power supply assembly 7 can supply power to the components of the monitoring assembly 8.

[0047] The power supply assembly 7 can use a combination of a battery 13 and a self-generating element. The self-generating element includes a power capturing device 16 and a power output system 14. The power capturing device 16 is a wave energy of compressed air converted by absorbing the wave force of water flow acting on the air bag 6 to obtain energy, such as using a piezoelectric ceramic power sheet. When the wave energy is applied to the piezoelectric ceramic power sheet, the current generated by the piezoelectric ceramic power sheet is transmitted to the power output system 14 after rectification. The power output system 14 converts the energy into final electric energy through one or more stages, and stores it in the battery 13, increasing the endurance of the battery 13 and eliminating the possibility of power failure of the detection device.

[0048] In other possible implementation embodiments, an air turbine generator can be used to obtain energy from wave energy, when the air bag 6 is under pressure, the internal air is compressed, and when the air bag 6 is not under pressure, it expands back, this process generates air flow in the air bag 6, drives the air turbine generator to generate electricity, and the current generated by the air turbine generator is transmitted to the power output system 14 after rectification, and the power output system 14 converts the energy through one or more stages to the final electric energy and stores it in the battery 13, thereby increasing the endurance of the battery 13.

[0049] The application can be applied to loess collapse area, geological subsidence area and the like, can monitor pipeline pressure, subsidence, blockage and leakage in real time, can absorb abnormal fluctuations of pipeline pressure, and can achieve the purposes of safety, reliability, convenience and the like.

[0050] Embodiment 2

[0051] In another typical embodiment of the application, as shown in Figures 1-2 a working method of the pipeline monitoring water hammer absorbing device is given.

[0052] The pipeline monitoring water hammer absorbing device in the embodiment 1 is used, which comprises:

[0053] The shell 4 is installed on the pipeline through the groove tee joint 1, and the internal cavity of the shell 4 is communicated with the pipeline;

[0054] When the pipeline pressure suddenly rises to be greater than the rated pressure of the pipeline, the air bag 6 is compressed to absorb the water hammer pressure, and when the pipeline pressure decreases to be below the rated pressure, the air bag 6 returns to the original state;

[0055] The monitoring assembly 8 measures the internal pressure of the air bag 6 and the position of the water hammer absorbing assembly, obtains the pipeline pressure and the subsidence, and judges the blockage and leakage according to the pipeline pressure.

[0056] Meanwhile, the monitoring assembly 8 further comprises a communication assembly, which can remotely transmit data to a data center for statistical analysis and real-time monitoring.

[0057] The abnormal fluctuations of the pipeline pressure can be absorbed, and the purposes of safety, reliability, convenience and the like can be achieved, and if abnormal subsidence or pipeline leakage occurs, the positioning element 9 can be quickly positioned to timely handle and solve the problem.

[0058] The above only describes the preferred embodiments of the application and is not used to limit the application, and various modifications and changes can be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A water hammer absorbing device for monitoring a pipeline, characterized by, Comprise: Water hammer absorbing assembly, comprising a shell and a gas bag in the shell, the open end of the shell is connected to the pipeline to be monitored; The monitoring assembly is installed in the gas bag and comprises a positioning element and a pressure sensor. The positioning element is fixed at the connection position of the gas bag and the shell, so that the position of the positioning element remains fixed relative to the shell. The pressure sensor measures the pressure in the gas bag. Both the positioning element and the pressure sensor are connected to the controller. The shell comprises a cavity with an opening. The opening position of the shell is a cylinder segment. The gas bag is located in the non-cylinder segment position of the cavity. The cylinder segment is connected to the pipeline to be monitored. A perforated plate is arranged in the cylinder segment of the shell. The fluid in the pipeline to be monitored contacts the gas bag after passing through the perforated plate. The water hammer absorbing assembly is connected to the pipeline through a groove tee joint. The pipeline and the groove tee joint are connected and fixed by a groove pipe clamp. The cylinder segment and the end joint of the groove tee joint are connected and fixed by a groove pipe clamp. The gas bag is partially fixed on the inner wall of the shell. When the position of the water hammer absorbing assembly changes due to the settlement caused by pipeline leakage, the position of the positioning element changes with the position of the water hammer absorbing assembly. The position change of the water hammer absorbing assembly is measured to determine the settlement condition.

2. The pipe monitoring water hammer absorbing apparatus according to claim 1, wherein The monitoring assembly further comprises a 3D camera mechanism and an ultrasonic flow sensor. The 3D camera mechanism and the ultrasonic flow sensor are respectively connected to the controller to send the collected image signal and flow signal to the controller.

3. The pipe monitoring water hammer absorbing apparatus according to claim 2, wherein The monitoring assembly further comprises a power supply assembly and a communication assembly. The communication assembly can send data to the data center. The power supply assembly can supply power to the components of the monitoring assembly.

4. The pipe monitoring water hammer absorbing apparatus according to claim 1, wherein The positioning element of the monitoring element is fixed at the connection position of the gas bag and the shell, so that the position of the positioning element remains fixed relative to the shell.

5. A method of operating a pipe monitoring water hammer absorbing device according to any one of claims 1-4, characterized in that, Comprise: The shell is installed in the pipeline through a groove tee joint. The internal cavity of the shell is in communication with the pipeline. When the pipeline pressure rises suddenly to more than the rated pressure of the pipeline, the gas bag is compressed to absorb the water hammer pressure. When the pipeline pressure decreases to below the rated pressure, the gas bag returns to its original state. The monitoring assembly measures the internal pressure of the gas bag and the position of the water hammer absorbing assembly, obtains the pipeline pressure and the settlement condition, and judges the blockage and leakage condition according to the pipeline pressure.

6. The method of claim 5, wherein the pipe monitoring water hammer absorbing apparatus is operated by, The monitoring assembly further comprises a communication assembly, which can transmit data to the data center.

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