Leakage sensing device for refuse landfill

Abstract

The utility model relates to the technical field of refuse landfills, in particular to a refuse landfill leakage sensing device which comprises a square wave emitter, detection electrodes, a wire, a signal processing system and an installation box, the installation box is arranged on the outer side of the refuse landfill and comprises installation plates, each installation plate is fixedly provided with one detection electrode, and the signal processing system is connected with the square wave emitter. The waterproof plate is in lap joint with the upper end face of the uppermost installation box and provided with an installation hole for a wire to penetrate through. According to the size of the refuse landfill, the number of the installation boxes is selected, it is ensured that the installation boxes cover the side wall of the refuse landfill, and rainwater can be prevented from leaking from soil above the installation boxes and affecting detection signals of the detection electrodes through the arrangement of the waterproof plates; the mounting plate realizes the mounting of the detection electrode on one hand, and separates the soil where the detection electrode is located from the external environment on the other hand, thereby preventing the outside from being suddenly wetted by rainwater and permeating to the position where the detection electrode is located on the other hand. The method can be widely applied to the technical field of refuse landfills.

Description

Technical Field

[0001] The utility model relates to the technical field of garbage landfills, in particular to a leakage sensing device for garbage landfills. Background Art

[0002] Landfills are a widely used method of waste disposal. However, landfill leakage remains a significant environmental challenge. Once leakage occurs, hazardous substances can contaminate surrounding soil, groundwater, and surface water, posing a serious threat to the environment and human health. Statistics show that landfill leakage can contaminate groundwater within several kilometers, resulting in widespread impacts and significant challenges in remediation.

[0003] The electric field method is a recently emerging landfill leakage detection technology. It works by installing square wave transmitters on both sides of the landfill to generate an artificial electric field. When leachate leaks from the landfill, the leachate, a substance with a different conductivity from the surrounding medium, changes the distribution of the electric field in the local area. Detection electrodes are placed on the landfill surface to receive the potential difference signal, and the electric field changes are analyzed to determine the leak location. This method offers the advantages of being non-invasive, having a wide detection range, and enabling real-time monitoring.

[0004] However, in practical application, the electric field method faces numerous challenges. Among them, external environmental factors significantly impact detection. For example, during rainfall, rainwater seeps into the landfill. Because rainwater is conductive, it alters the electric field distribution on the landfill surface, interfering with the potential difference signal received by the detection electrodes and causing deviations in the detection results. Utility Model Content

[0005] In view of the problem that when using the electric field method to detect landfill leakage in the existing technology, rainwater will seep into the landfill during rainy weather. Since rainwater itself is conductive, it will change the electric field distribution on the surface of the landfill, interfere with the potential difference signal received by the detection electrode, and cause deviations in the detection results; the utility model proposes a landfill leakage sensing device.

[0006] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0007] A landfill leakage sensing device includes a square wave emitter, a detection electrode, a wire and a signal processing system, and also includes an installation box. The installation boxes are evenly arranged outside the landfill. The installation boxes include mounting plates, each of which is fixed with a detection electrode. The device also includes a waterproof plate, which is overlapped on the upper end surface of the uppermost installation box and is provided with a mounting hole for the wire to pass through.

[0008] The square wave emitter transmits signals, creating an electric field inside and outside the landfill, creating the conditions for subsequent leak detection using changes in the electric field. The detection electrodes directly detect potential differences. By effectively sensing the potential difference generated by changes in the electric field caused by leachate leakage, leakage information can be obtained. The conductors transmit the potential difference signals captured by the detection electrodes to the signal processing system, ensuring signal transmission and enabling subsequent processing. The signal processing system processes and analyzes the potential difference signals transmitted by the conductors. Using specific algorithms and programs, it determines whether the signal changes are caused by leakage and determines the location and extent of the leak.

[0009] According to the size of the landfill, an appropriate number of installation boxes are selected to ensure that the installation boxes can cover the entire side wall of the landfill. The setting of the waterproof board can prevent rainwater from directly seeping from the soil above the installation box to the location of the detection electrode, thereby affecting the detection signal of the detection electrode. The setting of the installation board not only realizes the installation of the detection electrode, but also isolates the soil where the detection electrode is located from the external environment, preventing the external environment from being suddenly wetted by rain and penetrating into the location of the detection electrode. The installation hole provides a channel for the wire to pass through, while ensuring the waterproof effect.

[0010] Preferably, the installation box further comprises installation columns, the four corners of the side walls of the mounting plate are fixed with installation columns, the upper end surface of the installation column near the top is provided with an installation groove, and the lower end surface of the installation column near the bottom is fixed with a connecting rod.

[0011] When burying the installation boxes in the landfill, the connecting rods on the bottom installation box are inserted into the soil on the ground, and the upper installation boxes are inserted into the installation grooves on the lower installation boxes through the connecting rods, thereby realizing the stacking of the installation boxes. The setting of the installation columns allows the staff to ensure that the various installation plates are in the same plane by pressing each installation column against the side wall of the landfill.

[0012] As a preference, it also includes an L-shaped plate, with plug-in slots provided at both ends of the mounting plate, the plug-in slots running through the upper and lower end surfaces of the mounting plate.

[0013] Landfills are generally rectangular, with gaps between installation boxes on different sides. L-shaped plates are inserted into the sockets on the installation boxes on different sides to seal the gaps and prevent water from seeping out through the soil in the gaps.

[0014] As a preference, a limiting block is provided at the notch of the plug-in slot, and both ends of the L-shaped plate are respectively provided with a first limiting slot for inserting the limiting block.

[0015] The L-shaped plate can be limited by setting the limit block to improve the stability of the connection between the boxes installed on different surfaces.

[0016] As a preference, it also includes a connecting plate, which is provided with a second limiting groove, and the limiting block can be inserted into the second limiting groove.

[0017] The connecting plate is inserted into the installation slots on two adjacent installation boxes, and then the stability between the installation boxes on the same surface and the same layer is better achieved through the cooperation between the second limiting slots on the connecting plate and the limiting blocks.

[0018] As a preference, the L-shaped plate and the installation boxes on both sides thereof form a wiring cavity, one end of the detection electrode is connected to a wire, one end of the wire extends to the wiring cavity, and extends upward from the wiring cavity to the ground and connected to the signal processing system.

[0019] A dedicated routing channel is provided for the wires, so that the wires leading from the detection electrodes can be orderly concentrated in the routing cavity, avoiding the wires from being scattered randomly in the soil around the landfill and preventing them from being interfered with and damaged by external factors.

[0020] This protects and organizes the wires, improving the neatness and standardization of the entire device and facilitating wire management and maintenance. Compared to randomly laying wires, the wiring cavity makes locating or repairing wires much more convenient and quicker, effectively reducing maintenance costs and time. In complex environments like landfills, the wiring cavity provides a relatively stable and secure transmission path for the wires, ensuring the proper operation of the entire leakage sensing device.

[0021] Preferably, the mounting hole is arranged above the wiring cavity, and a mounting ring located in the mounting hole is provided above the waterproof plate, and one end of the wire passes through the mounting ring.

[0022] The mounting holes provide necessary channels for the wires to pass through the wiring cavity and out of the waterproof plate, so that the wires can smoothly extend above the ground and connect to the signal processing system, ensuring a smooth signal transmission path.

[0023] Rainfall is common in outdoor landfill environments. Without a mounting ring, rainwater tends to accumulate around the mounting hole. Since the mounting hole is where the wires pass through the waterproofing sheet, the area around it is relatively low, and water naturally flows and collects there. However, the mounting ring can redirect rainwater and prevent it from accumulating there. It surrounds the mounting hole, preventing rainwater from staying and collecting there. Instead, it flows along the edge of the ring, effectively preventing water from accumulating there and corroding the wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the overall structure of the leakage sensing device in the embodiment;

[0025] Figure 2Schematic diagram of the structure of the waterproof board in the embodiment;

[0026] Figure 3 This is a schematic diagram of the structure of the leakage sensing device in the embodiment after removing the waterproof plate;

[0027] Figure 4 This is a structural diagram of the installation box in the embodiment;

[0028] Figure 5 Schematic diagram of the structure of the L-shaped plate in the embodiment;

[0029] Figure 6 Schematic diagram of the structure of the connecting plate in the embodiment.

[0030] The parts indicated by the numbers in the accompanying drawings are as follows:

[0031] 110. Installation box; 1101. Installation plate; 1102. Installation column; 1103. Installation slot; 1104. Connecting rod; 1105. Plug slot; 1106. Limit block; 120. Detection electrode; 130. Waterproof board; 1301. Installation hole; 1302. Installation ring; 140. L-shaped plate; 1401. First limit slot; 150. Connecting plate; 1501. Second limit slot; 160. Wiring cavity; 170. Landfill. DETAILED DESCRIPTION

[0032] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings and embodiments. It should be understood that the embodiments are merely for explanation of the present invention and are not intended to limit the present invention.

[0033] Example

[0034] like Figure 1-6 As shown, a landfill leakage sensing device includes a square wave emitter, a detection electrode 120, a wire and a signal processing system, wherein the square wave emitter, the wire and the signal processing system are not shown in the figure; the square wave emitter can be distributed around the landfill 170 to ensure the stability of the electric field of the entire landfill. An equipment room is built around the landfill 170, and the signal processing system is placed in the equipment room. The signal processing system detects whether there is leakage inside the landfill 170 through the changes in the electric field detected by the detection electrode 120.

[0035] The system also includes mounting boxes 110, which are evenly distributed outside the landfill 170. These boxes include mounting plates 1101, each of which is secured with a detection electrode 120. They also include waterproof panels 130, which overlap the upper surface of the topmost mounting box 110 and are provided with mounting holes 1301 for wires to pass through. The system also includes mounting posts 1102, each secured at the four corners of the sidewalls of the mounting plates 1101. The upper surface of the uppermost mounting post 1102 is provided with a mounting slot 1103, while the lower surface of the lowermost mounting post 1102 is secured with a connecting rod 1104.

[0036] The mounting plate 1101 further comprises an L-shaped plate 140, with insertion slots 1105 defined at both ends thereof. Insertion slots 1105 extend through the upper and lower end surfaces of the mounting plate 1101. Stoppers 1106 are located at the openings of the insertion slots 1105. Both ends of the L-shaped plate 140 are provided with first stoppers 1401 for insertion of the stoppers 1106. The mounting plate 150 further comprises a second stopper 1501 defined thereon, into which the stoppers 1106 can be inserted.

[0037] The L-shaped plate 140 and the mounting boxes 110 on either side form a wiring cavity 160. A wire is connected to one end of the detection electrode 120. The wire extends into the wiring cavity 160 and then upward from there to the ground, connecting to the signal processing system. A mounting hole 1301 is located above the wiring cavity 160. A mounting ring 1302 is located above the waterproof plate 130, positioned within the mounting hole 1301. One end of the wire passes through the mounting ring 1302.

[0038] The installation process and usage principle of the leakage sensing device in this embodiment are as follows: a foundation pit for installing the leakage device is dug on the outer wall of the landfill 170, and a suitable number of installation boxes 110 are selected according to the size of the landfill 170. The installation boxes 110 are stacked on the outer wall of the landfill 170 in sequence, and the bottom layer of installation boxes 110 are placed on the bottom wall of the foundation pit, wherein the connecting rod 1104 can be inserted into the soil on the ground to improve the stability of the bottom layer of installation boxes 110.

[0039] The connecting rods 1104 on the upper installation box 110 are inserted into the mounting slots 1103 on the lower installation box 110. Adjacent installation boxes 110 on the same level are connected via a connecting plate 150. This connecting plate 150 is inserted into the mounting slots 1103 of two adjacent installation boxes 110. The connection and fixation between adjacent installation boxes 110 is achieved through the cooperation between the second limiting slots 1501 and the limiting blocks 1106. Installation boxes 110 on different sides are connected via an L-shaped plate 140. The connection mechanism is similar to that of the connecting plate 150, with the first limiting slots 1401 and the limiting blocks 1106 cooperating to achieve the installation of the L-shaped plate 140. The length of the L-shaped plate 140 and the connecting plate 150 is selected based on the height of the landfill 170, thereby enabling a single L-shaped plate 140 or connecting plate 150 to connect multiple layers of installation boxes 110.

[0040] The detection electrode 120 on the mounting plate 1101 is connected to the wire, which passes through the wiring cavity 160 and extends from the mounting hole 1301 to connect to the signal processing system. The wiring cavity 160 protects and organizes the wire, improves the neatness and standardization of the entire device, and facilitates the management and maintenance of the wire. Pull the wire out of the wiring cavity 160, fill the foundation pit with soil until it is flush with the upper end surface of the landfill 170. A waterproof plate 130 is set on the upper end surface of the mounting box 110 for waterproofing, and the wire extends from the mounting hole 1301 on the waterproof plate 130 to connect to the signal processing system. The landfill 170 is monitored in real time for leakage through changes in the electric field, and the influence of external rainwater on the leakage sensing device is avoided.

[0041] In short, the above is only a preferred embodiment of this embodiment, and all equivalent changes and modifications made according to the scope of the patent application of this embodiment should fall within the scope of coverage of the patent of this embodiment.

Claims

1. A landfill leakage sensing device comprising a square wave emitter, a detection electrode (120), a conductor and a signal processing system, characterized in that: The invention also includes an installation box (110), which is evenly arranged outside the landfill. The installation box (110) includes an installation plate (1101), and each installation plate (1101) is fixed with a detection electrode (120). The invention also includes a waterproof plate (130), which is overlapped on the upper end surface of the uppermost installation box (110). The waterproof plate (130) is provided with an installation hole (1301) for a wire to pass through.

2. The landfill leakage sensing device according to claim 1, characterized in that: The installation box (110) further includes installation columns (1102), and the four corners of the side wall of the installation plate (1101) are fixed with installation columns (1102). The upper end surface of the installation column (1102) near the top is provided with an installation groove (1103), and the lower end surface of the installation column (1102) near the bottom is fixed with a connecting rod (1104).

3. The landfill leakage sensing device according to claim 2, characterized in that: The mounting plate (1101) further comprises an L-shaped plate (140). Both ends of the mounting plate (1101) are provided with plug-in slots (1105), and the plug-in slots (1105) penetrate the upper and lower end surfaces of the mounting plate (1101).

4. The landfill leakage sensing device according to claim 3, characterized in that: A limiting block (1106) is provided at the notch of the plug-in slot (1105), and first limiting slots (1401) for inserting the limiting block (1106) are respectively provided at both ends of the L-shaped plate (140).

5. The landfill leakage sensing device according to claim 4, characterized in that: The invention also comprises a connecting plate (150), wherein a second limiting groove (1501) is provided on the connecting plate (150), and the limiting block (1106) can be inserted into the second limiting groove (1501).

6. The landfill leakage sensing device according to claim 3, characterized in that: The L-shaped plate (140) and the installation boxes (110) on both sides thereof form a wiring cavity (160); one end of the detection electrode (120) is connected to a wire, one end of the wire extends to the wiring cavity (160), and extends upward from the wiring cavity (160) to the ground to connect to the signal processing system.

7. The landfill leakage sensing device according to claim 6, characterized in that: The mounting hole (1301) is arranged above the wiring cavity (160), and a mounting ring (1302) located at the mounting hole (1301) is provided above the waterproof plate (130), and one end of the wire passes through the mounting ring (1302).

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