CN114878092A - Leakage monitoring device and monitoring method - Google Patents
Leakage monitoring device and monitoring method Download PDFInfo
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- CN114878092A CN114878092A CN202210640411.1A CN202210640411A CN114878092A CN 114878092 A CN114878092 A CN 114878092A CN 202210640411 A CN202210640411 A CN 202210640411A CN 114878092 A CN114878092 A CN 114878092A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/30—Landfill technologies aiming to mitigate methane emissions
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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
Technical Field
The invention relates to the technical field of leakage monitoring, in particular to a leakage monitoring device and a monitoring method.
Background
China has a large amount of domestic garbage sanitary landfill sites, and the current garbage landfill sites find that sewage flows out of an underground water guide and discharge system when garbage begins to be buried, so that the landfill garbage detection has to be turned over and leak holes of a horizontal anti-seepage system have to be repaired; even some landfill sites fail to detect and repair the leak in time, leakage amount is large after operation, pollution is caused to the surrounding environment, and a horizontal anti-seepage system which is invested in huge capital construction loses significance.
The electric leakage monitoring technology of the refuse landfill in the prior art is mainly based on a double-electrode method and an electrode grid method, the principle of the two methods is that a closed loop is generated by using leakage points of geomembranes, and then the leakage is judged by changing the potential, wherein the electrode grid method can also determine the specific positions of the leakage points by drawing a voltage distribution diagram. However, the two monitoring methods have respective limitations, and the double-electrode method can be used for judging whether leakage occurs but cannot determine the position of a leakage point; the electrode grid method, although it is possible to determine the leakage and to determine the location of the points, is not suitable for use in established landfills, since the electrode grid as a whole must be placed into the landfill unit at the time of construction.
Therefore, how to provide a leakage monitoring device and a monitoring method suitable for monitoring leakage and determining the position of the leakage point in the constructed landfill site is one of the technical problems to be solved in the field.
Disclosure of Invention
In view of the above, the present invention provides a leakage monitoring device and a monitoring method. The purpose is to solve the above-mentioned deficiency and offer.
In order to solve the technical problems, the invention adopts the following technical scheme:
a leak monitoring device comprising: 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.
Preferably, each monitoring induction module is provided with an input end and an output end, each input end is electrically connected with the strong current output end of the central controller, and each output end is electrically connected with the strong current input end of the central controller.
Preferably, the monitoring induction module further comprises a first lead, the central controller is electrically connected with a first end of the first lead, and the plurality of monitoring induction modules are respectively electrically connected with a second end of the first lead.
Preferably, a fixed resistor, a current monitoring sensor and an independent power supply are arranged in each monitoring induction module; 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; the current monitoring sensor is electrically connected with the output end; the fixed resistor is used for protecting the monitoring induction module and preventing the monitoring induction module from being burnt out by a strong current introduced by the first lead; the current monitoring sensor is used for monitoring the current from the first lead to the HDPE impermeable membrane; the independent power supply is used for providing electric energy for each monitoring induction module to independently send out electric signals.
Preferably, the leakage alarm device further comprises an alarm device, wherein the alarm device is connected to the first lead and used for leakage alarm.
A leak monitoring method, the monitoring method comprising:
s1, paving the HDPE impermeable membrane at the bottom of the landfill pit;
s2, when leakage occurs, enabling leakage liquid to penetrate through the HDPE impermeable membrane, wherein the conductive coating of the HDPE impermeable membrane is conductive in the leakage area;
s3, enabling the strong current of the first lead to enter the HDPE impermeable membrane through the monitoring induction module in the leakage area and to flow back to the central controller through the HDPE impermeable membrane to form a closed circuit; and the monitoring sensing module of the leakage area transmits a current signal of the leakage position to the central controller.
Preferably, the monitoring method further comprises: s4, triggering the alarm device to alarm when the strong current of the first lead passes through the alarm device.
Preferably, the monitoring method further comprises: s5, detecting the distance R of the strong current passing through the HDPE impermeable membrane by the monitoring induction module in the leakage area iM And the leakage area is characterized in that the monitoring induction module detects the current intensity L of the strong current passing through the HDPE impermeable membrane i 。
Preferably, the monitoring method further comprises: s6, calculating the potential U of the leakage area:
rho is the resistivity of the clay layer where the monitoring induction module is located in the leakage area;
n is the number of the monitoring induction modules in the leakage area. Compared with the prior art, the invention has the following technical effects:
1. each monitoring induction module is fixedly connected with the HDPE impermeable membrane, and the monitoring induction modules can be driven to move by moving the HDPE impermeable membrane, so that the monitoring induction modules are suitable for any constructed refuse landfill; the monitoring induction modules are arranged on the HDPE impermeable membrane in a matched manner, so that different positions of the refuse landfill can be monitored and leakage points can be judged;
2. the independent power supply is used for providing electric energy for each monitoring induction module to independently send out electric signals, and mutual interference of the monitoring induction modules is effectively avoided;
3. the alarm device is used for leakage alarm and is beneficial to timely leakage finding.
Drawings
FIG. 1 is a schematic view of a leak monitoring apparatus according to the present invention;
fig. 2 is a schematic view of the combination of a monitoring sensor module and an HDPE impermeable membrane of a leak monitoring device according to the present invention.
In the figure: 1-a central controller; 2-monitoring the sensing module; a 3-HDPE barrier film; 4-a first wire; 21-an input terminal; 22-an output terminal; 5-alarm device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-2, a leak monitoring device includes: central controller 1, a plurality of monitoring response module 2, HDPE prevention of seepage membrane 3, first wire 4 and alarm device 5, wherein, a plurality of monitoring response module 2 pass HDPE prevention of seepage membrane 3 respectively, and every monitoring response module 2 all with HDPE prevention of seepage membrane 3 fixed connection, and every monitoring response module 2 all contradicts the cooperation with the conductive coating of HDPE prevention of seepage membrane 3. When no leakage occurs, the conductive coating inside the HDPE impermeable membrane 3 is not conductive, and the non-electric connection relationship between the sensing module 2 and the HDPE impermeable membrane 3 is monitored; when leakage occurs, the conductive coating of the HDPE impermeable membrane 3 in the leakage area is conductive, and the monitoring induction module 2 is electrically connected with the HDPE impermeable membrane 3.
Each monitoring induction module 2 is provided with an input end 21 and an output end 22, wherein the input end 21 is positioned above the HDPE impermeable membrane 3, and the output end 22 is positioned below the HDPE impermeable membrane 3.
The central controller 1 is electrically connected with a first end of the first conducting wire 4, an input end 21 of each monitoring induction module 2 is electrically connected with a second end of the first conducting wire 4, and the central controller 1 provides a strong current for the plurality of monitoring induction modules 2 respectively.
The output 22 of each monitoring sensor module 2 is electrically connected to a high current input of the central controller 1 for high current return.
Each monitoring induction module 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 to the output terminal 22. The fixed resistor prevents the monitoring induction module 2 from being burnt out by the strong current introduced by the first lead 4.
Each output end 22 is electrically connected with the central controller 1 respectively, and when leakage occurs, the current monitoring sensor monitors the current intensity L of strong current in a leakage area passing through the HDPE impermeable membrane i L is coupled via an output 22 i To the central controller 1.
The independent power supply is used for providing electric energy for each monitoring induction module 2 independently sends out the signal of telecommunication, avoids a plurality of monitoring induction modules 2 to interfere with each other.
An alarm device 5 is connected to the first conductor 4, which alarm device 5 is used for leakage alarm.
The alarm device 5 is a warning lamp or a warning whistle.
A leak monitoring method, comprising:
s1, paving the HDPE impermeable membrane 3 at the bottom of the landfill pit;
s2, when leakage occurs, enabling the leakage liquid to penetrate through the HDPE impermeable membrane 3, wherein the conductive coating of the HDPE impermeable membrane 3 in the leakage area is conductive;
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 enabling the strong current 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 the current signal of the leakage position to the central controller (1);
s4, triggering the alarm device 5 to give an alarm by the strong current of the first lead 4 through the alarm device 5;
s5, detecting strong current through HDPE seepage-proofing by leakage area monitoring induction module 2Distance R of the membrane 3 iM The leakage area monitoring induction module 2 detects the current intensity L of the strong current passing through the HDPE impermeable membrane 3 i ；
S6, calculating the potential U of the leakage area:
rho is the resistivity of the clay layer where the leakage area monitoring induction module 2 is located;
n is the number of leakage area monitoring sensing modules 2.
By calculating the potential U, the strength of the leak can be detected.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope 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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Cited By (1)
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