CN114878092A - Leakage monitoring device and monitoring method - Google Patents

Abstract

The invention discloses a leakage monitoring device and a monitoring method, relating to the technical field of leakage monitoring, wherein the device comprises: the device comprises a central controller, a plurality of monitoring induction modules and an HDPE impermeable membrane; the central controller is electrically connected with the monitoring induction modules and is used for sending strong current to the monitoring induction modules and receiving the strong current flowing back from the monitoring induction modules; the plurality of monitoring induction modules respectively penetrate through the HDPE impermeable membrane and are fixedly connected with the HDPE impermeable membrane, and each monitoring induction module is in interference fit with the conductive coating inside the HDPE impermeable membrane; the conductive coating of the HDPE impermeable membrane is electrically connected to the central controller. The invention can realize the technical effects of monitoring leakage and judging the position of the leakage point, which are suitable for the built refuse landfill.

Description

A leakage monitoring device and monitoring method

technical field

The invention relates to the technical field of leakage monitoring, and more particularly to a leakage monitoring device and a monitoring method.

Background technique

There are a large number of sanitary landfills for domestic waste in my country, but the current landfill found that sewage was flowing out of the groundwater diversion system as soon as the garbage was filled, and had to open the landfill garbage detection and repair the loopholes in the horizontal anti-seepage system; There are even some landfills that fail to detect and repair loopholes in time, resulting in a large amount of leakage after operation, causing pollution to the surrounding environment.

In the prior art, the landfill electrical leakage monitoring technology is mainly based on the double-electrode method and the electrode grid method. To judge the occurrence of leakage, the electrode grid method can also draw the voltage distribution diagram to determine the specific location of the leakage point. However, these two monitoring methods have their own limitations. The two-electrode method can be used to determine whether leakage occurs but cannot determine the location of the leakage point. Although the electrode grid method can determine the leakage situation and determine the location of the point, but This method is not suitable for landfills that have already been built, because the entire electrode grid must be placed in the landfill unit during construction.

Therefore, how to provide a leakage monitoring device and a monitoring method suitable for monitoring leakage and judging the location of leakage points in an established landfill is one of the technical problems that need to be solved urgently in the art.

SUMMARY OF THE INVENTION

In view of this, the present invention provides a leakage monitoring device and a monitoring method. The purpose is to provide to solve the above shortcomings.

In order to solve the above-mentioned technical problems, the present invention has adopted the following technical solutions:

A leakage monitoring device, comprising: a central controller, a plurality of monitoring induction modules and an HDPE anti-seepage membrane; the central controller is electrically connected with a plurality of the monitoring induction modules, and the central controller is used for monitoring a plurality of all the monitoring induction modules. The monitoring induction modules send strong currents and receive strong currents flowing back from a plurality of the monitoring induction modules; a plurality of the monitoring induction modules pass through the HDPE impermeable membrane respectively, and the two are fixedly connected, and each of the The monitoring and sensing modules are all in conflict with the conductive coating inside the HDPE anti-seepage membrane; the conductive coating of the HDPE anti-seepage membrane is electrically connected to the central controller.

Preferably, each of the monitoring and induction modules is provided with an input end and an output end, each of the input ends is electrically connected to the high-current output end of the central controller, and each of the output ends is respectively connected to the central controller. The high current input terminal of the device is electrically connected.

Preferably, it also includes a first wire, the central controller is electrically connected to the first end of the first wire, and a plurality of the monitoring and sensing modules are respectively electrically connected to the second end of the first wire.

Preferably, a fixed resistance, a current monitoring sensor and an independent power supply are arranged inside each of the monitoring and sensing modules; the fixed resistance, the current monitoring sensor and the independent power supply are connected in series with each other in sequence, and the fixed resistance and the input terminal is electrically connected; the current monitoring sensor is electrically connected to the output terminal; the fixed resistor is used to protect the monitoring sensing module from being burned out by the strong current passed through the first wire; the The current monitoring sensor is used to monitor the current from the first wire to the HDPE impermeable membrane; the independent power source is used to provide electric power for each of the monitoring induction modules to independently send out electrical signals.

Preferably, an alarm device is also included, the alarm device is connected to the first wire, and the alarm device is used for leakage alarm.

A leakage monitoring method, the monitoring method comprising:

S1, the HDPE impermeable membrane is laid at the bottom of the landfill pit;

S2. When leakage occurs, the leakage liquid passes through the HDPE anti-seepage membrane, wherein the conductive coating of the HDPE anti-seepage membrane in the leakage area is conductive;

S3. The strong current of the first wire enters the HDPE impermeable membrane through the monitoring sensing module in the leakage area, and flows back to the central controller through the HDPE impermeable membrane to form a closed electrical circuit; and, The monitoring sensing module in the leakage area transmits the current signal of the leakage location to the central controller.

Preferably, the monitoring method further includes: S4, the strong current of the first wire passes through the alarm device to trigger the alarm device to alarm.

Preferably, the monitoring method further includes: S5, the monitoring and sensing module in the leakage area detects the distance R _iM of the strong current passing through the HDPE anti-seepage membrane, and the monitoring and sensing module in the leakage area detects that the strong current passes through the HDPE anti-seepage membrane The current intensity Li of the _membrane .

Preferably, the monitoring method further includes: S6, calculating the potential U of the leakage area:

ρ is the resistivity of the clay layer where the monitoring sensing module is located in the leakage area;

n is the number of the monitoring induction modules in the leakage area. The present invention has achieved the following technical effects with respect to the prior art:

1. Each of the monitoring and sensing modules is fixedly connected to the HDPE anti-seepage membrane, and the monitoring and sensing module can be moved by moving the HDPE anti-seepage membrane, which is beneficial for any established landfill. and cooperate with a plurality of the monitoring and sensing modules to be arranged on the HDPE anti-seepage membrane, which can monitor different positions of the landfill and determine the leakage point;

2. The independent power supply is used to provide electrical energy for each of the monitoring and induction modules to independently send out electrical signals, so as to effectively prevent multiple monitoring and induction modules from interfering with each other;

3. The alarm device is used for leakage alarm, which helps to find leakage in time.

Description of drawings

1 is a schematic structural diagram of a leakage monitoring device of the present invention;

FIG. 2 is a schematic diagram of the cooperation between a monitoring induction module of a leakage monitoring device of the present invention and an HDPE anti-seepage membrane.

In the figure: 1-central controller; 2-monitoring induction module; 3-HDPE impermeable membrane; 4-first wire; 21-input end; 22-output end; 5-alarm device.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example 1

Referring to a leakage monitoring device shown in FIG. 1-2, it includes: a central controller 1, a plurality of monitoring induction modules 2, an HDPE anti-seepage membrane 3, a first wire 4 and an alarm device 5, wherein a plurality of monitoring induction modules 2 respectively pass through the HDPE impermeable membrane 3 , and each monitoring sensing module 2 is fixedly connected to the HDPE impermeable membrane 3 , and each monitoring sensing module 2 collides with the conductive coating of the HDPE impermeable membrane 3 . When there is no leakage, the conductive coating inside the HDPE anti-seepage film 3 is not conductive, and the monitoring induction module 2 has no electrical connection with the HDPE anti-seepage film 3; when leakage occurs, the HDPE anti-seepage film in the leakage area 3. The conductive coating conducts electricity, and the monitoring induction module 2 is electrically connected to the HDPE impermeable membrane 3 .

Each monitoring sensing module 2 is provided with an input end 21 and an output end 22 , the input end 21 is located above the HDPE impermeable membrane 3 , and the output end 22 is located below the HDPE impermeable membrane 3 .

The central controller 1 is electrically connected to the first end of the first wire 4, the input end 21 of each monitoring induction module 2 is electrically connected to the second end of the first wire 4, and the central controller 1 is respectively a plurality of monitoring induction modules 2 Provide strong current.

The output end 22 of each monitoring induction module 2 is respectively electrically connected to the strong current input end of the central controller 1 for the return of the strong current.

Each monitoring sensing module 2 is provided with a fixed resistance, a current monitoring sensor and an independent power supply. The fixed resistance, the current monitoring sensor and the independent power supply are connected in series with each other in sequence, and the fixed resistance is electrically connected to the input terminal 21; the current monitoring sensor is connected to the output terminal. 22 Electrical connections. Its fixed resistance prevents the monitoring induction module 2 from being burned out by the strong current passed through the first wire 4 .

Each output terminal 22 is electrically connected to the central controller 1 respectively. When leakage occurs, its current monitoring sensor monitors the current intensity Li of the strong current passing through the _{HDPE impermeable} membrane in the leakage area, and transmits Li through the output terminal 22 to the central controller 1.

The independent power supply is used to provide electric power for each monitoring and induction module 2 to send out electrical signals independently, so as to avoid mutual interference of multiple monitoring and induction modules 2 .

The alarm device 5 is connected to the first wire 4, and the alarm device 5 is used for leakage alarm.

The alarm device 5 is a warning light or an alarm whistle.

A leak monitoring method comprising:

S1. HDPE impermeable membrane 3 is laid at the bottom of the landfill pit;

S2. When leakage occurs, the leakage liquid passes through the HDPE anti-seepage membrane 3, wherein the conductive coating of the HDPE anti-seepage membrane 3 in the leakage area is conductive;

S3, the strong current of the first wire 4 enters the HDPE impermeable membrane 3 through the monitoring induction module 2 in the leakage area, and flows back to the central controller 1 through the HDPE impermeable membrane 3 to form a closed electrical circuit; The monitoring induction module (2) transmits the current signal of the leakage position to the central controller (1);

S4, the strong current of the first wire 4 passes through the alarm device 5, and triggers the alarm device 5 to give an alarm;

S5, the leakage area monitoring induction module 2 detects the distance R _iM of the strong current passing through the HDPE anti-seepage membrane 3, and the leakage area monitoring induction module 2 detects the current intensity _Li of the strong current passing through the HDPE anti-seepage membrane 3;

S6. Calculate the potential U of the leakage area:

ρ is the resistivity of the clay layer where the leakage area monitoring sensing module 2 is located;

n is the number of sensing modules 2 for monitoring the leakage area.

By calculating the potential U, the strength of the leak can be detected.

The above are only preferred embodiments of the present invention, and do not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention are still within the scope of the present invention. within the scope of the technical solution of the present invention.

Claims (9)

1. A leak monitoring device, comprising: the device comprises a central controller (1), a plurality of monitoring induction modules (2) and an HDPE impermeable membrane (3);

the central controller (1) is electrically connected with the monitoring induction modules (2), and the central controller (1) is used for sending strong current to the monitoring induction modules (2) and receiving the strong current flowing back from the monitoring induction modules (2);

the plurality of monitoring induction modules (2) respectively penetrate through the HDPE impermeable membrane (3) and are fixedly connected with each other, and each monitoring induction module (2) is in interference fit with a conductive coating inside the HDPE impermeable membrane (3);

the conductive coating of the HDPE impermeable membrane (3) is electrically connected with the central controller (1).

2. A leak monitoring device according to claim 1, characterized in that each of said monitoring sensing modules (2) is provided with an input (21) and an output (22), each of said inputs (21) being electrically connected to a respective high current output of said central controller (1), and each of said outputs (22) being electrically connected to a respective high current input of said central controller (1).

3. A leak monitoring device according to claim 2, further comprising a first wire (4), wherein the central controller (1) is electrically connected to a first end of the first wire (4), and a plurality of the monitoring sensing modules (2) are electrically connected to a second end of the first wire (4), respectively.

4. A leak monitoring device according to claim 2, characterized in that each of the monitoring sensing modules (2) is internally provided with a fixed resistor, a current monitoring sensor and an independent power supply; the fixed resistor, the current monitoring sensor and the independent power supply are sequentially connected in series, and the fixed resistor is electrically connected with the input end (21); the current monitoring sensor is electrically connected with the output end (22);

the fixed resistor is used for protecting the monitoring induction module (2) and preventing the monitoring induction module from being burnt out by a strong current introduced by the first lead (4);

the current monitoring sensor is used for monitoring the current from the first lead (4) to the HDPE impermeable membrane (3);

the independent power supply is used for providing electric energy for each monitoring induction module (2) to independently send out electric signals.

5. A leak monitoring device according to claim 1, further comprising an alarm device (5), the alarm device (5) being connected to the first conductor (4), the alarm device (5) being adapted to alarm for a leak.

6. A leak monitoring method applied to the leak monitoring apparatus according to any one of claims 1 to 5, the leak monitoring method comprising:

s1, paving the HDPE impermeable membrane (3) at the bottom of the landfill pit;

s2, when a leak occurs, the leaking liquid passes through the HDPE impermeable membrane (3), wherein the conductive coating of the HDPE impermeable membrane (3) is conductive in the leaking area;

s3, enabling the strong current of the first lead (4) to enter the HDPE impermeable membrane (3) through the monitoring induction module (2) in the leakage area and to flow back to the central controller (1) through the HDPE impermeable membrane (3) to form a closed circuit; and the monitoring sensing module (2) of the leakage area transmits a current signal of the leakage position to the central controller (1).

7. The leak monitoring method of claim 6, further comprising: s4, triggering the alarm device (5) to alarm through the alarm device (5) when the strong current of the first lead (4) passes through the alarm device (5).

8. The leak monitoring method of claim 6, further comprising: s5, a leakage area, wherein the monitoring induction module (2) detects the distance R of the strong current passing through the HDPE impermeable membrane (3) _iM The leakage area is characterized in that the monitoring induction module (2) detects the current intensity L of a strong current passing through the HDPE impermeable membrane (3) _i 。

9. The leak monitoring method of claim 8, further comprising: s6, calculating the potential U of the leakage area:

rho is the resistivity of the clay layer where the monitoring induction module (2) is located in the leakage area;

n is the number of the monitoring induction modules (2) in the leakage area.

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