Sewage pipeline clogging identification method and system based on pressure sensor

Abstract

The invention provides a sewage pipeline clogging recognition method and system based on pressure sensors, the system comprises a sewage pipeline, a plurality of pressure sensors are arranged at the bottom in the sewage pipeline at intervals, and power and signal transmission lines of the pressure sensors penetrate out through threading holes under the pipeline and are led to the top of the pipeline along the outer wall of the pipeline. A gap between the sensor and the threading hole is sealed by a waterstop tape, a steel sleeve is arranged on the outer side of the sewage pipeline, and a gap between the sewage pipeline and the steel sleeve is filled with rubber; the power supply and the signal transmission line of each pressure sensor are connected outside the pipeline and then are connected to the wireless data transmission module, and the wireless data transmission module receives a pressure measurement signal and then uploads the pressure measurement signal to a far-end data management center through an operator network. The pressure sensor is arranged in the bottom of the sewage pipeline in advance, a liquid level meter does not need to be arranged, a sewage inspection well does not need to be built, and the pipe network clogging condition is rapidly recognized and the clogged pipe section is locked by comparing and analyzing the upstream and downstream water flow static pressure values of the pipe section.

Description

Technical Field

[0001] The invention belongs to the technical field of municipal engineering and environmental engineering, and relates to a sewage pipe blockage identification method and system based on a pressure sensor. Background Art

[0002] In order to improve the ecological environment of villages and towns, the collection and treatment of village and town sewage has been paid more and more attention. However, due to the lack of planning of village and town housing, scattered construction, and residents' living habits, the laying of village and town sewage pipe networks has its own particularity. Sewage pipes (pipe diameters are generally DN200~DN300) are directly connected to the terminal municipal sewage pipes through elbows, tees, and crosses. In most cases, it is impossible to build midway inspection wells, and blockages frequently occur during the later operation and maintenance of the pipe network. At present, the main means of identifying blockages in sewage pipes include pipeline periscope (QV) endoscopy technology and liquid level online monitoring technology. Pipeline periscope endoscopy technology is to put equipment into the inspection well and check the internal situation of the pipeline through the camera. The liquid level online monitoring technology is to lay a liquid level meter in the pipeline inspection well, and compare the liquid levels upstream and downstream of the inspection well in real time to preliminarily identify the blockage area. The above methods are only suitable for scenes with inspection wells. For the identification of blockages in village and town sewage pipe networks, the above methods are difficult to meet the actual needs. Summary of the invention

[0003] The purpose of the present invention is to address the defects of the prior art and provide a method and system for identifying sewage pipe blockage based on a pressure sensor. The method and system can detect pipe blockage in real time and quickly lock the blocked pipe section during the operation and maintenance of village and town pipe networks.

[0004] A first aspect of the present invention provides a method for identifying sewage pipe blockage based on a pressure sensor, comprising: S1: Multiple pressure sensors are installed at intervals at the bottom of the sewage pipe. The power supply and signal transmission lines of the pressure sensors are passed through the threading hole directly below the pipe and led to the top of the pipe along the outer wall of the pipe. The gap between the sensor and the threading hole is sealed with a water-stop tape. A steel casing is installed outside the sewage pipe, and the gap between the sewage pipe and the steel casing is filled with rubber; S2: The power supply and signal transmission lines of each pressure sensor are connected outside the pipeline and then connected to the wireless data transmission module. After receiving the pressure measurement signal, the wireless data transmission module uploads it to the remote data management center through the operator network; S3: The data management center automatically analyzes the pressure measurement data uploaded by each pressure sensor in the sewage pipe. Under normal circumstances, from upstream to downstream, as the water volume in the pipe gradually increases, the water pressure value gradually increases. When an abnormality occurs, the water pressure value in the downstream continuous pipe section is further analyzed. If the downstream water pressure value is less than the upstream water pressure value and exceeds the set threshold, it is determined that there is blockage between the adjacent pressure sensors where the abnormality occurs.

[0005] Preferably, the pressure sensor is fixed to the bottom of the sewage pipe by a clip.

[0006] A second aspect of the present invention provides a sewage discharge system that is easy to judge blockage, including a sewage pipe, wherein a plurality of pressure sensors are arranged at intervals at the bottom of the sewage pipe, the power supply and signal transmission line of the pressure sensor pass through the threading hole directly below the pipe and are led to the top of the pipe along the outer wall of the pipe, the gap between the sensor and the threading hole is sealed with a water-stop tape, a steel casing is arranged on the outside of the sewage pipe, and the gap between the sewage pipe and the steel casing is filled with rubber; the power supply and signal transmission line of each pressure sensor are connected to the outside of the pipe and then connected to a wireless data transmission module, and after receiving the pressure measurement signal, the wireless data transmission module uploads it to a remote data management center through the operator network, and the data management center is used to receive and analyze the pressure measurement data uploaded by each pressure sensor, and judge whether there is blockage and the location of the blockage.

[0007] Preferably, the sewage pipe is a double-wall corrugated pipe, a PVC pipe or a cast iron pipe.

[0008] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a method and system for identifying clogging of sewage pipes based on pressure sensors, which solves the problem of rapid identification of clogging risks in small-diameter sewage pipe networks. By using a built-in pressure sensor at the bottom of the sewage pipe in advance, there is no need to lay a liquid level gauge or build a sewage inspection well. By comparing and analyzing the static pressure values ​​of the upstream and downstream water flows in the pipe section, the clogging of the pipe network can be quickly identified and the clogging pipe section can be locked. The pipe network operation and maintenance team can be guided to accurately implement dredging and ensure the healthy operation of the village and town sewage pipe network. The method has low cost, simple installation and operation and maintenance, and high environmental benefits, and has a very broad application prospect in village and town sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a principle block diagram of the sewage pipe blockage identification method based on pressure sensor provided by the present invention.

[0010] Figure 2 This is a schematic diagram of the plan layout of a sewage pipe based on a pressure sensor provided by the present invention.

[0011] Figure 3 A schematic longitudinal section diagram of sewage pipe blockage based on a pressure sensor provided by the present invention.

[0012] Figure 4 A schematic cross-sectional diagram of a sewage pipe based on a pressure sensor provided by the present invention.

[0013] In the figure: 1. Sewage pipe; 2. Pressure sensor; 3. Power supply and signal transmission line; 4. Wire threading hole; 5. Steel casing; 6. Wireless data transmission module. DETAILED DESCRIPTION

[0014] In order to enable those skilled in the art to better understand the technical solution of the present invention, the preferred implementation scheme of the present invention is described below in conjunction with specific embodiments. However, it should be understood that the drawings are only used for exemplary descriptions and cannot be understood as limitations on this patent; in order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted; the positional relationship described in the drawings is only used for exemplary descriptions and cannot be understood as limitations on this patent.

[0015] As an embodiment of the present invention, see the attached Figure 1-Figure 4 This embodiment provides a method for identifying sewage pipe blockage based on a pressure sensor, comprising: S1: Multiple pressure sensors 2 are arranged at intervals at the bottom of the sewage pipe. The power supply and signal transmission line 3 of the pressure sensor 2 pass through the threading hole 4 directly below the pipe and are led to the top of the pipe along the outer wall of the pipe. The gap between the sensor and the small hole 4 is sealed with a water-stop tape. A steel casing 5 is arranged outside the sewage pipe, and the gap between the sewage pipe and the steel casing 5 is filled with rubber; S2: The power supply and signal transmission line 3 of each pressure sensor 2 are connected outside the pipeline and then connected to the wireless data transmission module 6. After receiving the pressure measurement signal, the wireless data transmission module 6 uploads it to the remote data management center through the operator network; S3: The data management center automatically analyzes the pressure measurement data uploaded by each pressure sensor 2 in the sewage pipe. Under normal circumstances, from upstream to downstream, as the water volume in the pipe gradually increases, the water pressure value gradually increases. When an abnormality occurs, the water pressure value in the downstream continuous pipe section is further analyzed. If the downstream water pressure value is less than the upstream water pressure value and exceeds the set threshold, it is determined that there is blockage between the adjacent pressure sensors where the abnormality occurs.

[0016] Specifically, in the above embodiment, the spacing distances between the multiple pressure sensors 2 can be set according to the distribution of the buildings, such as Figure 2 As shown, in order to distinguish the blockage location, a pressure sensor 2 can be set between two adjacent buildings according to the direction of water flow. When blockage occurs, the blockage location can be quickly determined.

[0017] In some preferred embodiments, the pressure sensor 2 is fixed to the bottom of the sewage pipe by means of a clip. Of course, it can also be installed by other fixing methods, such as pressure welding or bonding.

[0018] Through the description of the above embodiments, it can be understood that the present invention also provides a sewage discharge system that is convenient for judging blockage. Figure 3 and Figure 4 As shown, it includes a sewage pipe 1, in which a plurality of pressure sensors 2 are arranged at intervals at the bottom. The power supply and signal transmission line 3 of the pressure sensor 2 passes through the threading hole 4 just below the pipe and is led to the top of the pipe along the outer wall of the pipe. The gap between the sensor and the small hole 4 is sealed with a water-stop tape. A steel casing 5 is arranged on the outside of the sewage pipe, and the gap between the sewage pipe and the steel casing 5 is filled with rubber; the power supply and signal transmission line 3 of each pressure sensor 2 is connected to the wireless data transmission module 6 after being connected outside the pipe. After receiving the pressure measurement signal, the wireless data transmission module 6 uploads it to the remote data management center through the operator network. The data management center is used to receive and analyze the pressure measurement data uploaded by each pressure sensor 2, and determine whether it is blocked and the blockage position.

[0019] In some preferred embodiments, it should be understood that the implementation of the present invention does not need to rely specifically on a certain type of sewage pipe, and common sewage pipes are applicable. In this embodiment, the sewage pipe 1 can be selected as a double-wall corrugated pipe, a PVC pipe or a cast iron pipe.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A method for identifying sewage pipe blockage based on a pressure sensor, characterized in that: include: S1: A plurality of pressure sensors (2) are arranged at intervals at the bottom of the sewage pipe, the power supply and signal transmission line (3) of the pressure sensor (2) is passed through a threading hole (4) directly below the pipe and led along the outer wall of the pipe to the top of the pipe, the gap between the sensor and the small hole (4) is sealed with a waterproof tape, a steel casing (5) is arranged on the outside of the sewage pipe, and the gap between the sewage pipe and the steel casing (5) is filled with rubber; S2: The power supply and signal transmission line (3) of each pressure sensor (2) are connected outside the pipeline and then connected to the wireless data transmission module (6). After receiving the pressure measurement signal, the wireless data transmission module (6) uploads it to the remote data management center through the operator network; S3: The data management center automatically analyzes the pressure measurement data uploaded by each pressure sensor (2) in the sewage pipe. Under normal circumstances, from upstream to downstream, as the water volume in the pipe gradually increases, the water pressure value gradually increases. When an abnormality occurs, the water pressure value in the downstream continuous pipe section is further analyzed. If the downstream water pressure value is less than the upstream water pressure value and exceeds the set threshold, it is determined that there is blockage between the adjacent pressure sensors where the abnormality occurs.

2. A method for identifying sewage pipe blockage based on a pressure sensor according to claim 1, characterized in that: The pressure sensor (2) is fixed to the bottom of the sewage pipe via a clip.

3. A sewage discharge system that is easy to judge blockage, characterized by: The invention comprises a sewage pipe (1), wherein a plurality of pressure sensors (2) are arranged at intervals at the bottom of the sewage pipe (1), a power supply and a signal transmission line (3) of the pressure sensor (2) pass through a threading hole (4) directly below the pipe and are led to the top of the pipe along the outer wall of the pipe, a gap between the sensor and the small hole (4) is sealed with a waterproof tape, a steel casing (5) is arranged outside the sewage pipe, and a gap between the sewage pipe and the steel casing (5) is filled with rubber; the power supply and the signal transmission line (3) of each pressure sensor (2) are connected outside the pipe and then connected to a wireless data transmission module (6), and after receiving the pressure measurement signal, the wireless data transmission module (6) uploads it to a remote data management center through an operator network, and the data management center is used to receive and analyze the pressure measurement data uploaded by each pressure sensor (2), and determine whether there is blockage and the blockage position.

4. A sewage discharge system that facilitates clogging determination according to claim 3, characterized in that: The sewage pipe (1) is a double-wall corrugated pipe, a PVC pipe or a cast iron pipe.

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