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Pipeline water leakage detection device, system, method and process based on optical fiber humidity sensor

发布日期:2020-01-18 03:51 Document serial number: 19730136 Release date: 2020-01-18 03:51
Pipeline water leakage detection device, system, method and process based on optical fiber humidity sensor

The present invention relates to the technical field of sensor detection, and in particular, to a pipeline water leakage detection device, system, and method based on an optical fiber humidity sensor.



Background technique:

Existing real-time pipeline leak detection equipment needs to install various types of sensors on the pipeline. If detection equipment is installed on the buried pipeline, large-scale construction is required. After the pipeline is exposed, relevant pipelines are installed on the pipeline. Sensing equipment. Such an installation method will generate a large amount of installation costs for the pipelines that have been buried underground, and it is difficult to perform regular inspection and maintenance of the equipment.

The alarm device in the existing detection equipment is buried in the ground together with the sensing equipment, the wireless signal is unstable, and effective data transmission and alarm cannot be achieved. Some equipment uses wired transmission, but it increases the difficulty of construction.



Technical realization elements:

It is necessary to propose a real-time detection device for buried pipeline leakage based on optical fiber humidity sensors.

It is also necessary to propose a real-time detection system for buried pipeline leakage based on optical fiber humidity sensors.

It is also necessary to propose a method for real-time detection of leaks in buried pipelines based on optical fiber humidity sensors.

An optical fiber humidity sensor-based embedded pipeline water leakage real-time detection device includes a protective cover, a protective tube, an optical fiber humidity sensor, and a processor. The protective cover is disposed on the ground, and the protective cover is a rigid hollow shell. The upper end is connected to the protective cover, the lower end is inserted below the ground, and is set close to the pipeline. A thread is provided on the outer wall of the protective tube. The protective tube has a cavity inside. Extending, the upper end of the fiber-optic humidity sensor is set inside the protective cover to connect with the processor to provide the detected real-time humidity information to the processor. The processor has a pre-stored humidity limit. Compare the limits to determine if the pipe is leaking.

Preferably, the protective tube is a plurality of segments of cells, and adjacent cells are detachably connected to meet the requirements of different depth inspections.

An embedded pipeline water leakage real-time detection system based on an optical fiber humidity sensor includes a protective cover, a protective tube, a first optical fiber humidity sensor, a second optical fiber humidity sensor, and a processor. The protective cover is disposed on the ground, and the protective cover is Rigid hollow housing, the upper end of the protective tube is connected to the protective cover, the lower end is inserted below the ground, is arranged near the pipeline, and a thread is provided on the outer wall of the protective tube. Pass the protective tube and extend from the bottom of the protective tube. The upper end of the first optical fiber humidity sensor is set inside the protective cover to connect with the processor to provide the detected first real-time humidity information to the processor and the second optical fiber. The probe of the humidity sensor passes through the side wall of the protective tube to detect the external humidity information. The upper end of the second optical fiber humidity sensor is set inside the protective cover to connect with the processor to provide the detected second real-time humidity information to The height of the processor and the second optical fiber humidity sensor is higher than the height of the first optical fiber humidity sensor. The first humidity limit and the second humidity limit. The processor compares the received first humidity information and the second humidity information with the first humidity limit and the second humidity limit, respectively, and judges the timing of the two. , According to the judgment results to detect whether the pipeline is leaking.

Preferably, the detection system further includes a communication unit, a power supply unit, and an alarm unit all connected to the processor. The communication unit, the power supply unit, and the alarm unit are all disposed inside the protective cover, and the power supply unit is connected to the external mains power nearby to provide Working power, the communication unit sends the information received by the processor to the external terminal, the processor also sends alarm information to the alarm unit according to the judgment result, and sends the alarm information to the cloud platform through the communication unit.

A real-time detection method for buried pipeline water leakage based on a fiber optic humidity sensor includes the following steps:

Setting a first optical fiber humidity sensor near the pipeline;

Detecting the humidity information of the soil below the pipe or flush with the pipe through the first optical fiber humidity sensor and providing it to the processor;

The processor compares the humidity information with the humidity limit to determine if the pipe is leaking.

A real-time detection method for buried pipeline water leakage based on a fiber optic humidity sensor includes the following steps:

A first optical fiber humidity sensor and a second optical fiber humidity sensor are arranged near the pipeline, and the height of the second optical fiber humidity sensor is higher than the height of the first optical fiber humidity sensor;

The first optical fiber humidity sensor detects the first humidity information of the soil below the pipe or flush with the pipe, and provides it to the processor, and the second optical fiber humidity sensor detects the second humidity information of the soil above or in the middle of the pipe, and Provided to the processor;

The processor compares the first humidity information with the first humidity limit. If the first humidity limit is exceeded, the processor records the generation time of the first humidity information, and the processor compares the second humidity information with the second humidity limit. For comparison, if the second humidity limit is exceeded, the processor records the generation time of the second humidity information, and the processor compares the generation time of the first humidity information with the generation time of the second humidity information. If the generation time is earlier than the generation time of the second humidity information, it is determined that the pipe is leaking. If the generation time of the first humidity information is later than the generation time of the second humidity information, it is non-pipe leakage.

In the present invention, during installation, it is only necessary to excavate a slender and deep vertical hole using a hole-opening tool near the pipeline, and then insert the protective tube of the device into the hole until the surface of the protective cover is flush with the ground and then landfill For soil, after using the device for a certain period of time, you only need to twist the protective cover to drive the protective tube to rotate. The thread of the protective tube wall rotates in the soil. The reaction force provided by the soil pushes the device to rise to the ground. . Such a structure makes it convenient and labor-saving when taking out, and the excavation construction surface near the pipeline is small.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a real-time detection device for buried pipeline leakage based on an optical fiber humidity sensor.

FIG. 2 is a schematic diagram of another embodiment of FIG. 1.

Figures 3 and 4 are front and right views of the system installed near the ground pipe.

Figure 5 is a functional block diagram of the system.

In the figure: protective cover 10, protective tube 20, thread 21, first optical fiber humidity sensor 30, second optical fiber humidity sensor 40, processor 50, communication unit 60, power supply unit 70, alarm unit 80, and pipe 100.

detailed description

In order to explain the technical solutions of the embodiments of the present invention more clearly, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For ordinary technicians, other drawings can be obtained based on these drawings without paying creative work.

Referring to FIGS. 1-5, an embodiment of the present invention provides a real-time detection device for buried pipeline water leakage based on an optical fiber humidity sensor, including a protective cover 10, a protective tube 20, an optical fiber humidity sensor, and a processor 50. The protective cover 10 The protective cover 10 is a rigid hollow shell. The upper end of the protective tube 20 is connected to the protective cover 10, and the lower end is inserted below the ground. It is arranged near the pipeline. Threads 21 are provided on the outer wall of the protective tube 20. The interior of 20 is a cavity. The probe of the optical fiber humidity sensor passes through the protective tube 20 and protrudes from the bottom of the protective tube 20. The upper end of the optical fiber humidity sensor is set inside the protective cover 10 to connect with the processor 50 to detect the The real-time humidity information is provided to the processor 50, and the humidity limit is pre-stored inside the processor 50. The processor 50 compares the above-mentioned real-time humidity information with the humidity limit to determine whether the pipeline is leaking.

In the present invention, during installation, it is only necessary to use an opening tool near a pipeline to excavate a slender and deep vertical hole, and then insert the protective tube 20 of the device into the hole until the surface of the protective cover 10 is flush with the ground, and Fill the soil. After using the device for a certain period of time, you only need to twist the protective cover 10 to drive the protective tube 20 to rotate. The thread 21 of the tube wall of the protective tube 20 rotates in the soil. The reaction force provided by the soil pushes the device. Ascend to spin off the ground. Such a structure makes it convenient and labor-saving when taking out, and the excavation construction surface near the pipeline is small.

Further, the protective tube 20 is a plurality of single cells, and adjacent cells can be detachably connected to meet the requirements of different depth inspections.

The invention also proposes an embedded pipeline water leakage real-time detection system based on an optical fiber humidity sensor, which includes a protective cover 10, a protective tube 20, a first optical fiber humidity sensor 30, a second optical fiber humidity sensor 40, and a processor 50. The cover 10 is disposed on the ground. The protective cover 10 is a rigid hollow shell. The upper end of the protective tube 20 is connected to the protective cover 10, and the lower end is inserted below the ground. It is arranged near the pipeline. A thread 21 is provided on the outer wall of the protective tube 20. The inside of the protective tube 20 is a cavity. The probe of the first optical fiber humidity sensor 30 passes through the protective tube 20 and protrudes from the bottom of the protective tube 20. The upper end of the first optical fiber humidity sensor 30 is disposed inside the protective cover 10 for processing. The device 50 is connected to provide the detected first real-time humidity information to the processor 50, and the probe of the second optical fiber humidity sensor 40 passes through the side wall of the protective tube 20 to detect external humidity information. The second optical fiber humidity sensor 40 The upper end is disposed inside the protective cover 10 to be connected to the processor 50 to provide the detected second real-time humidity information to the processor 50 and the setting of the second optical fiber humidity sensor 40 The height is higher than the height of the first optical fiber humidity sensor 30 (preferably, the height is higher than the middle and upper part of the pipe 100). The processor 50 internally sets a first humidity limit and a second humidity limit. The humidity information and the second humidity information are compared with the first humidity limit and the second humidity limit, respectively, and the timing of the two is judged, and it is detected whether the pipeline 100 is leaking according to the judgment result.

Further, the above detection system further includes a communication unit 60, a power supply unit 70, and an alarm unit 80 all connected to the processor 50. The communication unit 60, the power supply unit 70, and the alarm unit 80 are all disposed inside the protective cover 10, and the power supply unit 70 and the outside The nearby mains is connected to provide working power. The communication unit 60 sends the information received by the processor 50 to an external terminal. The processor 50 also sends alarm information to the alarm unit 80 according to the judgment result, and sends the alarm information through the communication unit 60. Send to cloud platform.

The invention also provides a method for real-time detection of water leakage in an embedded pipeline based on a fiber optic humidity sensor, which includes the following steps:

Setting a first optical fiber humidity sensor 30 near the pipeline;

Detecting the humidity information of the soil below the pipe or flush with the pipe 100 through the first optical fiber humidity sensor 30 and providing it to the processor 50;

The processor 50 compares the humidity information with the humidity limit to determine whether the pipe 100 is leaking.

The invention also provides a method for real-time detection of water leakage in an embedded pipeline based on a fiber optic humidity sensor, which includes the following steps:

A first optical fiber humidity sensor 30 and a second optical fiber humidity sensor 40 are arranged near the pipe, and the height of the second optical fiber humidity sensor 40 is higher than the height of the first optical fiber humidity sensor 30;

The first fiber-optic humidity sensor 30 detects the first humidity information of the soil below the pipe or flush with the pipe, and provides it to the processor 50. The second fiber-optic humidity sensor 40 detects the second humidity of the soil above or in the middle of the pipe. Information and provide to the processor 50;

The processor 50 compares the first humidity information with the first humidity limit. If the first humidity limit is exceeded, the processor 50 records the generation time of the first humidity information, and the processor 50 compares the second humidity information with the second humidity information. The humidity limit is compared. If the second humidity limit is exceeded, the processor 50 records the generation time of the second humidity information, and the processor 50 compares the generation time of the first humidity information with the generation time of the second humidity information. If the generation time of the first humidity information is earlier than the generation time of the second humidity information, it is determined that the pipe is leaking. If the generation time of the first humidity information is later than the generation time of the second humidity information, it is non-pipe leakage.

When this solution is implemented, for example, a processing unit, a first comparator, a second comparator, a first timer, and a second timer may be provided inside the processor 50. The first comparator may include the first humidity information and the first humidity. Limit comparison. If it exceeds, it means that water seepage occurs in the soil. At this time, the first comparator sends a timing information to the first timer, and the first timer records a time, which is the time when the first optical fiber humidity sensor 30 detects a water leak. Similarly, the second comparator compares the second humidity information with the second humidity limit. If it exceeds, it indicates that there is water seepage in the soil. At this time, the second comparator sends the second timing information to the second timer. The second timer records a time, which is the time when the second optical fiber humidity sensor 40 detects a water leak; the control unit compares the two times, if the generation time of the first humidity information is earlier than the generation of the second humidity information Time, it is judged that the pipe is leaking, and if the generation time of the first humidity information is later than the generation time of the second humidity information, it is non-pipe leakage, such as rain, ground Watering and other problems caused.

The pipeline is buried below the ground. When the pipeline leaks, the water leaks from the top to the bottom. The first optical fiber humidity sensor 30 detects a leak. If there is a large amount of water, it slowly spreads upward. At this time, the second optical fiber humidity sensor 40 can detect So, the first optical fiber humidity sensor 30 detects water leakage before the second optical fiber humidity sensor 40;

When there is no water leakage from the pipeline, such as rain or ground water, the water leaks down from the ground, and the second fiber optic humidity sensor 40 with a higher height first detects the water leakage, and then the first fiber optic humidity sensor 30 can detect it. Therefore, this state is detected as a non-pipe leak.

The above scheme is set to accurately determine whether it is caused by water leakage in the pipeline or caused by external environmental factors according to different directions and time differences of water leakage, so as to avoid false detection by the sensor.

The modules or units in the device of the embodiment of the present invention may be combined, divided, and deleted according to actual needs.

What has been disclosed above are only the preferred embodiments of the present invention, and of course, the scope of rights of the present invention cannot be limited by this. Those of ordinary skill in the art can understand all or part of the process of implementing the above embodiments and make according to the claims of the present invention. The equivalent changes still fall within the scope of the invention.

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