A subarea metering device for preventing flooding and freezing

Abstract

This invention provides a flood and freeze protection zone metering device, comprising a well body. An inlet pipe is installed and connected to one side wall of the well body, and an outlet pipe is installed and connected to the other side wall. Elastic sealing rings are provided at the connection points of the inlet and outlet pipes with the well body. This invention adopts a factory prefabrication and modular assembly method. The well body and internal metering components are pre-assembled in the factory, requiring only hoisting, positioning, and pipe connection on-site. Compared to traditional brick or concrete-cast well bodies, the construction cycle is significantly shortened, unaffected by weather, and installation efficiency is significantly improved. This invention integrates multiple sensors within the same well body, using a data acquisition and transmission terminal for unified power supply, unified data acquisition, and unified uploading to a digital platform. This solves the problem of scattered information in traditional zone metering devices, achieving comprehensive monitoring and remote management of pipeline flow, pressure, water quality, leakage, and well body status.

Description

Technical Field

[0001] This invention relates to the field of water supply pipeline technology, specifically to a flood-proof and freeze-proof zone metering device. Background Technology

[0002] Zone metering is a core method for controlling leakage in water supply networks. Currently, zone metering equipment is typically installed in brick-lined pipe wells or cast-in-place concrete wells. These well structures present the following problems: First, its waterproof performance is poor. Groundwater and surface water can easily seep into the well, causing the metering equipment, sensors, and electrical components to be in a damp environment for extended periods, and even leading to water damage and failure, resulting in a high failure rate. Second, in cold northern regions, low winter temperatures can easily cause the equipment inside the well to freeze and crack, affecting the normal operation of the metering device.

[0003] In addition, in existing zone metering devices, various sensors such as flow, pressure, and water quality are usually purchased separately by different manufacturers and installed separately on site. Each system is independent of the others, and data cannot be collected and transmitted remotely in a unified manner, resulting in information dispersion, inconvenience in operation and management, and difficulty in forming a comprehensive monitoring and intelligent analysis of the pipeline network status.

[0004] In summary, existing zone metering devices suffer from problems such as fragmented information, susceptibility to water flooding and freezing, and difficulty in long-term stable operation. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a flood-proof and freeze-proof zone metering device, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a flood-proof and freeze-proof zone metering device, comprising a well body, an inlet pipe installed and connected to one side wall of the well body, an outlet pipe installed and connected to the other side wall of the well body, elastic sealing rings respectively provided at the connection positions of the inlet pipe and the outlet pipe with the well body, and an inlet pipe stop valve connected to a flange at one end of the inlet pipe. One end of the outlet pipe is flanged and connected to an outlet pipe stop valve. One end of the outlet pipe stop valve is flanged and connected to an expansion joint. The expansion joint and the inlet pipe stop valve are flanged and connected to connecting pipes at their respective ends close to each other. A flow meter is flanged and connected between the connecting pipes on both sides. The well body includes a lower well body and an upper well body, and the lower well body and the upper well body are sealed by a sealing strip and bolts. An extended wellbore is provided on one side of the upper end face of the upper well body, and a sealing ring is provided at the connection position between the extended wellbore and the upper well body.

[0007] Preferably, a sealing cover is fixedly provided on the top of the extended well shaft, a load-bearing well cover is installed on the top of the sealing cover, and a sealing ring is also provided at the connection position between the sealing cover and the extended well shaft.

[0008] Preferably, a data acquisition and transmission terminal is installed inside the well body, one end of the data acquisition and transmission terminal is equipped with a battery, and a water immersion sensor is installed at the bottom of the well body.

[0009] Preferably, the expansion joint is a flexible connection, and its axial length can be adjusted.

[0010] Preferably, a leak detector is installed on the top of the outer end face of the water inlet pipe, a pressure gauge is installed on the top of the outer end face of the water outlet pipe, and a water quality monitor is installed on one side of the pressure gauge.

[0011] Preferably, the leak detector is a noise sensor, and the noise signal is uploaded to the platform to determine the location of the leak point through noise analysis and processing software.

[0012] Preferably, the height of the extended wellbore is adjusted according to the underground burial depth of the pipeline network.

[0013] Preferably, the upper well body, the lower well body, the extended well casing, and the sealing cap are made of high-strength composite resin.

[0014] Preferably, the load-bearing manhole cover includes an outer ring and an inner ring, wherein the outer ring is made of ductile iron and the inner ring is made of plastic.

[0015] This invention provides a flood-proof and freeze-proof zoned metering device. It has the following beneficial effects: 1. This invention adopts a factory prefabrication and modular assembly method. The well body and internal metering components are pre-assembled in the factory. On-site installation only requires hoisting, positioning and pipe connection. Compared with traditional brick or cement cast-in-place well bodies, the construction cycle is greatly shortened, it is not affected by the weather, and the installation efficiency is significantly improved.

[0016] 2. This invention integrates multiple sensors, such as a leak detector, flow meter, water quality monitor, pressure gauge, and water immersion sensor, into the same well body. Through a data acquisition and transmission terminal, it provides unified power supply, unified data acquisition, and unified uploading to a digital platform, solving the problem of scattered information in traditional zone metering devices. It realizes comprehensive monitoring and remote management of pipeline flow, pressure, water quality, leakage, and well body status.

[0017] 3. The well body of the present invention is made of high-strength composite resin material. The lower well body and the upper well body are sealed and connected by sealing strips and bolts. The connection between the water inlet pipe, the water outlet pipe and the well body is provided with elastic sealing rings to form a fully sealed space, which effectively prevents groundwater and surface water from seeping in and avoids equipment failure due to water flooding. At the same time, the high-strength composite resin material has good heat insulation performance. Combined with the sealing structure, it can effectively prevent the equipment from freezing and cracking in low-temperature environments, ensuring long-term stable operation of the metering device in northern winters.

[0018] 4. The water quality monitor of this invention adopts an insertion-type water quality sensor and is based on the electrode method for measurement. It does not require water intake and circulation or the use of chemical reagents, which saves water resources on the one hand and greatly reduces operating costs and maintenance frequency on the other.

[0019] 5. The invention features a water immersion sensor at the bottom of the well body. When leakage occurs due to abnormal construction or other external factors, the sensor promptly sends an alarm signal to the platform, notifying maintenance personnel to address the issue and minimize losses. The load-bearing well cover employs a double-layer structure with an outer ductile iron ring and an inner plastic ring, meeting load-bearing requirements while ensuring signal strength and transmission quality for wireless data transmission. In applications where load-bearing is not required, a sealing cap can be used alone for sealing, flexibly adapting to different working conditions. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the device structure of the present invention; Figure 2 This is a schematic diagram of the well body structure of the present invention; Figure 3 This is a structural schematic diagram of the load-bearing manhole cover component of the present invention.

[0021] In the diagram: 1. Well body; 2. Inlet pipe; 3. Leak detector; 4. Inlet pipe shut-off valve; 5. Flow meter; 6. Expansion joint; 7. Water quality monitor; 8. Pressure gauge; 9. Outlet pipe; 10. Data acquisition and transmission terminal; 11. Battery; 12. Water immersion sensor; 13. Elastic sealing ring; 14. Connecting pipe; 15. Outlet pipe shut-off valve; 101. Lower well body; 102. Sealing strip; 103. Upper well body; 104. Extended well barrel; 105. Sealing cover; 106. Load-bearing well cover; 107. Sealing ring; 1061. Outer ring of load-bearing well cover; 1062. Inner ring of load-bearing well cover. Detailed Implementation

[0022] This invention provides a flood-proof and freeze-proof zone metering device, such as... Figure 1-3 As shown, it includes a well body 1, an inlet pipe 2 is installed and connected to one side wall of the well body 1, and an outlet pipe 9 is installed and connected to the other side wall of the well body 1. Elastic sealing rings 13 are respectively provided at the connection positions of the inlet pipe 2 and the outlet pipe 9 with the well body 1. An inlet pipe shut-off valve 4 is connected to one end of the inlet pipe 2 via a flange. One end of the outlet pipe 9 is flanged and connected to the outlet pipe stop valve 15. One end of the outlet pipe stop valve 15 is flanged and connected to the expansion joint 6. The expansion joint 6 and the inlet pipe stop valve 4 are flanged and connected to the connecting pipe 14 at their respective ends. A flow meter 5 is flanged and connected between the two connecting pipes 14. The well body 1 includes a lower well body 101 and an upper well body 103. The lower well body 101 and the upper well body 103 are sealed by a sealing strip 102 and bolts. An extended wellbore 104 is provided on one side of the upper end face of the upper well body 103, and a sealing ring 107 is provided at the connection position between the extended wellbore 104 and the upper well body 103.

[0023] Furthermore, a sealing cover 105 is fixedly provided on the top of the extended well shaft 104, and a load-bearing well cover 106 is installed on the top of the sealing cover 105. A sealing ring 107 is also provided at the connection position between the sealing cover 105 and the extended well shaft 104.

[0024] Furthermore, a data acquisition and transmission terminal 10 is installed inside the well body 1, a battery 11 is installed at one end of the data acquisition and transmission terminal 10, and a water immersion sensor 12 is installed at the bottom of the well body 1.

[0025] Furthermore, the expansion joint 6 is a flexible connection, and its axial length can be adjusted.

[0026] Furthermore, a leak detector 3 is installed on the top of the outer end face of the inlet pipe 2, a pressure gauge 8 is installed on the top of the outer end face of the outlet pipe 9, and a water quality monitor 7 is installed on one side of the pressure gauge 8.

[0027] It should be further noted that the leak detector 3, flow meter 5, water quality monitor 7, pressure gauge 8, data acquisition and transmission terminal 10, and water immersion sensor 12 are powered by battery 11.

[0028] It is worth further explaining that the data acquisition and transmission terminal 10 collects signals from the leak detector 3, flow meter 5, water quality monitor 7, pressure gauge 8 and water immersion sensor 12 and uploads them to the digital platform according to the set time and format.

[0029] It should be further explained that the water quality monitor 7 is an insertion-type water quality sensor. The water quality sensor can be a single-parameter sensor or a multi-parameter sensor. The single-parameter sensor is used to monitor residual chlorine, while the multi-parameter sensor is used to monitor at least two of residual chlorine, turbidity, and pH value.

[0030] Furthermore, the leak detector 3 is a noise sensor. The noise signal is uploaded to the platform and the noise analysis and processing software determines the location of the leak.

[0031] Furthermore, the height of the extended wellbore 104 is adjusted according to the underground burial depth of the pipeline network.

[0032] Furthermore, the upper well body 103, the lower well body 101, the extended well barrel 104, and the sealing cover 105 are made of high-strength composite resin.

[0033] Furthermore, the load-bearing manhole cover includes an outer ring 1061 and an inner ring 1062. The outer ring 1061 is made of ductile iron, and the inner ring 1062 is made of plastic.

[0034] Furthermore, the process for determining the location and size of leaks in the pipeline network is as follows: S1. The leak detector 3 collects noise signals, including at least one of the following: friction sound at the edge of the leak hole, impact sound of the jet head, and friction sound between the jet and the medium. The noise signals are transmitted to the digital platform through the data acquisition and transmission terminal 10. S2. The noise analysis and processing software in the digital platform receives the noise signal and initializes the parameters, including pipeline properties, pipeline structure, pipe material, temperature and pipe diameter. Among them, the pipeline network attributes include trunk pipes and branch pipes, the pipeline network structure includes tree-like pipelines and ring-like pipelines, the pipe materials include at least one of ductile iron pipes, cement pipes, steel pipes and PE pipes, and the pipe diameter is selected from DN50, DN65, DN80, DN100 and above. S3. The noise analysis and processing software selects the corresponding noise analysis model to perform spectrum analysis on the noise signal based on the initialized parameters. The noise analysis model is constructed based on at least one parameter among pipeline properties, pipeline structure, pipe material, temperature and pipe diameter. S4. After eliminating interference noise, use the frequency and amplitude of the noise spectrum data collected by the nighttime leak detector 3 to preliminarily determine the location of the leak. S5. Verify the signal collected by the multi-point leak detectors 3 to narrow down the range of leak locations; S6. Based on the flow signal collected by the data acquisition and transmission terminal 10, the size of the leak point is initially determined, and the pressure signal collected by the pressure gauge 8 is used for verification to accurately determine the size of the leak. S7. The noise signal collected over a long period of time from the leak detector 3 is used as input data to train the noise analysis model, so as to continuously improve the accuracy of the leak location and the accuracy of the leak size determination.

[0035] When using this device, first select an extended wellbore 104 of appropriate height according to the underground burial depth of the pipeline network. Connect the lower well body 101 and upper well body 103 with a sealing strip 102 and bolts for a sealed connection. Install the extended wellbore 104 on one side of the upper end face of the upper well body 103 and seal it with a sealing ring 107. Connect the inlet pipe 2 and outlet pipe 9 to the external water supply pipeline respectively. The connection points between the inlet pipe 2, outlet pipe 9, and well body 1 are sealed and waterproofed using an elastic sealing ring 13. Connect the inlet pipe shut-off valve 4, flow meter 5, expansion joint 6, and outlet pipe shut-off valve 15 sequentially with flanges to form a complete metering pipeline.

[0036] After the device is installed, battery 11 supplies power to the leak detector 3, flow meter 5, water quality monitor 7, pressure gauge 8, data acquisition and transmission terminal 10, and water immersion sensor 12, and each sensor enters the working state.

[0037] During normal operation, flow meter 5 collects pipeline flow data in real time, pressure gauge 8 collects pipeline pressure data in real time, water quality monitor 7 monitors water quality parameters in real time, leak detector 3 collects pipeline noise signals in real time, and water immersion sensor 12 monitors whether there is water accumulation at the bottom of well 1 in real time. Data acquisition and transmission terminal 10 collects signals from the above sensors according to preset time intervals and preset data formats and uploads them to the digital platform to realize remote monitoring of the pipeline network operation status.

[0038] When well body 1 leaks or accumulates water due to abnormal construction or other reasons, water immersion sensor 12 detects the water level signal, and data acquisition and transmission terminal 10 immediately uploads the signal to the digital platform. The platform sends an alarm message to the operation and maintenance personnel to prompt timely handling and avoid damage to the metering equipment due to flooding.

[0039] When a leak occurs in the pipeline network, the procedure for determining the location and size of the leak is as follows: First, the leak detector 3 collects the noise signals generated by the leak point, including the friction sound at the edge of the leak hole, the impact sound of the jet head, and the friction sound between the jet and the medium. The data acquisition and transmission terminal 10 transmits the noise signals to the digital platform.

[0040] Subsequently, the noise analysis and processing software in the digital platform receives the noise signal and initializes the parameters, including network attributes, network structure, pipe material, temperature, and pipe diameter. Network attributes include main pipes and branch pipes; network structure includes tree-like and ring-like networks; pipe material includes at least one of ductile iron pipes, cement pipes, steel pipes, and PE pipes; and pipe diameter is selected from DN50, DN65, DN80, DN100, and larger.

[0041] Next, the noise analysis and processing software selects the corresponding noise analysis model to perform spectral analysis on the noise signal based on the initialized parameters. The noise analysis model is constructed based on at least one parameter among pipeline properties, pipeline structure, pipe material, temperature, and pipe diameter.

[0042] Then, after the software eliminates environmental noise interference, it uses the frequency and amplitude of the noise spectrum data collected by the nighttime leak detector 3 to initially determine the location of the leak. The location is further narrowed down by verifying the signals collected by the leak detectors 3, which are deployed at multiple points.

[0043] Meanwhile, the software initially determines the size of the leak based on the flow signal collected by the data acquisition and transmission terminal 10, and verifies it using the pressure signal collected by the pressure gauge 8 to accurately determine the size of the leak.

[0044] Finally, the noise signal collected over a long period of time from the leak detector 3 was used as input data to train the noise analysis model, continuously optimize the model parameters, and continuously improve the accuracy of locating the leak point and determining the size of the leak.

[0045] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A flood-proof and freeze-proof zone metering device, comprising a well body (1), characterized in that: A water inlet pipe (2) is installed and connected to one side wall of the well body (1), and a water outlet pipe (9) is installed and connected to the other side wall of the well body (1). Elastic sealing rings (13) are provided at the connection positions of the water inlet pipe (2) and the water outlet pipe (9) with the well body (1). A water inlet pipe shut-off valve (4) is connected to the flange at one end of the water inlet pipe (2). One end of the outlet pipe (9) is connected to an outlet pipe stop valve (15) with a flange. One end of the outlet pipe stop valve (15) is connected to an expansion joint (6) with a flange. The expansion joint (6) and the inlet pipe stop valve (4) are connected to a connecting pipe (14) with flanges at their respective ends close to each other. A flow meter (5) is connected between the connecting pipes (14) on both sides with flanges. The expansion joint (6) is a flexible connection, and its axial length can be adjusted; The well body (1) includes a lower well body (101) and an upper well body (103), and the lower well body (101) and the upper well body (103) are sealed by a sealing strip (102) and bolts. An extended wellbore (104) is provided on one side of the upper end face of the upper well body (103), and a sealing ring (107) is provided at the connection position between the extended wellbore (104) and the upper well body (103).

2. The flood-proof and freeze-proof zone metering device according to claim 1, characterized in that: The extended wellbore (104) is fixedly provided with a sealing cover (105) at the top, and a load-bearing well cover (106) is installed on the top of the sealing cover (105). The sealing ring (107) is also provided at the connection position between the sealing cover (105) and the extended wellbore (104).

3. The flood-proof and freeze-proof zone metering device according to claim 1, characterized in that: A data acquisition and transmission terminal (10) is installed inside the well body (1). A battery (11) is installed at one end of the data acquisition and transmission terminal (10). A water immersion sensor (12) is installed at the bottom of the well body (1).

4. The flood-proof and freeze-proof zone metering device according to claim 3, characterized in that: A leak detector (3) is installed on the top of the outer end face of the water inlet pipe (2), a pressure gauge (8) is installed on the top of the outer end face of the water outlet pipe (9), and a water quality monitor (7) is installed on one side of the pressure gauge (8).

5. The flood-proof and freeze-proof zone metering device according to claim 4, characterized in that: The leak detector (3) is a noise sensor. The noise signal is uploaded to the platform and the location of the leak is determined by the noise analysis and processing software.

6. The flood-proof and freeze-proof zone metering device according to claim 2, characterized in that: The upper well body (103), the lower well body (101), the extended wellbore (104), and the sealing cap (105) are made of high-strength composite resin.

7. The flood-proof and freeze-proof zone metering device according to claim 6, characterized in that: The load-bearing manhole cover (106) includes a load-bearing manhole cover outer ring (1061) and a load-bearing manhole cover inner ring (1062). The load-bearing manhole cover outer ring (1061) is made of ductile iron, and the load-bearing manhole cover inner ring (1062) is made of plastic.

8. A flood-proof and freeze-proof zone metering device according to claim 5, characterized in that: The leak detector (3), the flow meter (5), the water quality monitor (7), the pressure gauge (8), the data acquisition and transmission terminal (10), and the water immersion sensor (12) are powered by the battery (11); The data acquisition and transmission terminal (10) acquires signals from the leak detector (3), the flow meter (5), the water quality monitor (7), the pressure gauge (8), and the water immersion sensor (12) and uploads them to the digital platform according to the set time and format.

9. A flood-proof and freeze-proof zone metering device according to claim 4, characterized in that: The water quality monitor (7) is an insertion-type water quality sensor. The water quality sensor is a single-parameter sensor or a multi-parameter sensor. The single-parameter sensor is used to monitor residual chlorine, and the multi-parameter sensor is used to monitor at least two of residual chlorine, turbidity, and pH value.

10. A leak location method for a flood-proof and freeze-proof zone metering device according to any one of claims 1-9, characterized in that, Includes the following steps: S1. The sounding instrument (3) collects noise signals, and the noise signals are transmitted to the digital platform through the data acquisition remote transmission terminal (10). S2. The noise analysis and processing software in the digital platform receives the noise signal and initializes the parameters, including pipeline properties, pipeline structure, pipe material, temperature and pipe diameter. S3. The noise analysis and processing software selects the corresponding noise analysis model to perform spectrum analysis on the noise signal based on the initialized parameters; S4. After eliminating interference noise, use the frequency and amplitude of the noise spectrum data collected by the nighttime listening device (3) to preliminarily determine the location of the leak. S5. Verify the signal collected by the multi-point leak detector (3) to narrow down the range of leak locations; S6. Based on the flow signal collected by the data acquisition remote transmission terminal (10), the size of the leak point is initially determined, and the pressure signal collected by the pressure gauge (8) is used for verification to accurately determine the size of the leak. S7. The noise signal collected over a long period of time from the sounding instrument (3) is used as input data to train the noise analysis model in order to improve the accuracy of the location of the leak and the accuracy of the determination of the size of the leak.

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