Exposed geomembrane damage-oriented ultrahigh-voltage electric arc method detection vehicle

Abstract

The invention relates to the technical field of geomembrane detection, in particular to an ultrahigh-voltage electric arc method detection vehicle for exposed geomembrane damage. The device comprises a detection vehicle shell, a grounding electrode, a winding roll, a power supply bin, a traction rope and a power supply, the power supply is placed in the power supply bin, and a boosting module is arranged in the power supply bin; the positive electrode and the negative electrode of the boosting module are connected with the grounding electrode and the current detector respectively to form an electric field, and the damaged position of the geomembrane is detected according to the electromagnetic induction principle. The geomembrane damage detection device provided by the invention can quickly and accurately detect the damage condition of the geomembrane and quickly and accurately position the damage point, is particularly suitable for the exposed geomembrane and the condition covered with geotextile or a geocomposite drainage network, and greatly improves the engineering safety and quality.

Description

Technical Field

[0001] The invention relates to the technical field of geomembrane detection, and in particular to an ultra-high voltage arc method detection vehicle for detecting damage of exposed geomembranes. Background Art

[0002] With the acceleration of urbanization, the construction of various landfills, reservoirs, embankments and other projects is increasing. These projects generally use geomembranes as anti-seepage layers to prevent pollutants from leaking into groundwater and protect the environment and groundwater resources. Geomembranes are widely used in landfills, reservoirs, embankments and other projects to play an anti-seepage role. However, during transportation, installation and operation, geomembranes may be damaged by various factors (such as mechanical rolling, piercing by sharp objects, etc.). If these damages are not repaired in time, they may cause the anti-seepage system to fail, leading to serious consequences such as environmental pollution.

[0003] Traditional methods for detecting damage to geomembranes mainly include visual inspection, water pressure test, air pressure test, etc. Although these methods can detect damage points to a certain extent, they have limitations such as low detection efficiency, inaccurate positioning, and great impact on the environment. Especially for exposed geomembranes, since they are directly exposed to the external environment, they are more vulnerable to damage, and the damage points may be relatively hidden, making it difficult for traditional methods to effectively detect them. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present invention provides an ultra-high voltage arc method detection vehicle for detecting the damage of exposed geomembranes. The device includes: a detection vehicle shell, a grounding electrode, a cable reel, a power supply compartment, a traction rope and a power supply; the power supply is placed in the power supply compartment, and a boost module is arranged in the power supply compartment; the positive and negative poles of the boost module are respectively connected to the grounding electrode and the current detector to form an electric field, and the damaged part of the geomembrane is detected according to the principle of electromagnetic induction. The geomembrane damage detection device proposed in the present invention can quickly and accurately detect the damage of the geomembrane, and quickly and accurately locate the damage point. It is particularly suitable for exposed geomembranes and those covered with geotextiles or geocomposite drainage nets, which greatly improves the safety and quality of the project.

[0005] The present invention adopts the following technical scheme, an ultra-high voltage arc method detection vehicle for exposed geomembrane damage, comprising: a detection vehicle shell, a grounding electrode, a winding reel, a power supply compartment, a traction rope and a power supply; the power supply is placed in the power supply compartment, and a boost module is arranged in the power supply compartment; the positive and negative poles of the boost module are respectively connected to the grounding electrode and the current detector to form an electric field, and the damaged part of the geomembrane is detected according to the principle of electromagnetic induction.

[0006] Furthermore, the ground electrode and the detection vehicle housing are fixed with detachable screws.

[0007] Furthermore, the grounding electrode is in the shape of a pressure wheel for flattening the raised portion of the geomembrane.

[0008] Furthermore, the mass range of the grounding electrode is 10-30 kg.

[0009] Furthermore, a probe is installed on the current detector, and when the probe passes through the damaged area of ​​the geomembrane, electric sparks are generated according to the principle of electromagnetic induction.

[0010] The beneficial effects of the present invention are as follows: the present invention utilizes an ultra-high voltage arc method to locate leaks on geomembranes, and during the detection process, a high voltage is applied between a leakage detection instrument and a conductive medium below the detected layer. When the detection instrument moves to the leakage point, the current forms a loop to generate a visually visible arc, thereby indicating the location of the leak, achieving fast, efficient, and convenient geomembrane damage detection, and directly indicating the damaged location through the arc phenomenon, making the positioning more accurate and reliable, and reducing the possibility of misjudgment and missed detection; at the same time, the detection device of the present invention is a detection vehicle, which can carry necessary equipment and tools directly to the detection site, reducing the trouble of manpower handling and setting, and at the same time, the detection vehicle can also provide a stable power supply and working environment to ensure the accuracy and reliability of the detection results, making the entire detection process more standardized and standardized, and improving the quality and efficiency of the detection work. There is no need to directly contact the geomembrane surface during the detection process, reducing potential damage to the geomembrane. The operation of the detection vehicle is simple and convenient, so that operators can easily get started, reducing the difficulty of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0012] Figure 1 It is a schematic diagram of the principle and structure of an ultra-high voltage arc method detection vehicle for exposed geomembrane damage according to an embodiment of the present invention;

[0013] Figure 2 A top view of the structure of an ultra-high voltage arc method detection vehicle for detecting damage to an exposed geomembrane according to an embodiment of the present invention;

[0014] In the figure, 1. grounding electrode; 2. cable reel; 3. power supply compartment; 4. traction rope; 5. electric wire; 6. power supply; 7. current detector; 8. boost module; 9. geomembrane; 10. uneven geomembrane; 11. damaged holes. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] Ultra-high voltage arc detection technology is a method that uses electrical principles to locate leaks on geomembranes. During the detection process, a high voltage is applied between the leakage detection instrument and the conductive medium below the layer being detected. When the detection instrument moves to the leakage point, the current will form a loop and produce a visually visible arc. At the same time, the equipment will emit light and sound alarms to indicate the location of the leak. Integrating ultra-high voltage arc detection technology into the inspection vehicle can achieve fast, efficient and convenient geomembrane damage detection. The inspection vehicle can carry the necessary equipment and tools and arrive directly at the inspection site, reducing the trouble of manual handling and setting. At the same time, the inspection vehicle can also provide a stable power supply and working environment to ensure the accuracy and reliability of the test results.

[0017] With the advancement of science and technology and the continuous deepening of engineering practice, geomembrane damage detection technology is also constantly developing and innovating. Ultra-high voltage arc detection technology, as one of the important methods, can quickly scan and locate the damaged points of geomembranes, which greatly improves the detection efficiency compared with traditional methods. The arc phenomenon directly indicates the damaged position, making the positioning more accurate and reliable, reducing the possibility of misjudgment and missed detection. The detection vehicle has a high degree of integration and a friendly operation interface, which makes it easy for operators to get started and reduces the difficulty of operation. This method is not only suitable for flat geomembrane surfaces, but also can adapt to the detection of complex terrain and irregular surfaces to a certain extent. There is no need to directly contact the geomembrane surface during the detection process, which reduces the potential damage to the geomembrane. Therefore, it has been widely used in engineering practice. At the same time, with the continuous upgrading and improvement of detection equipment, the performance and functions of the detection vehicle will be further improved.

[0018] Therefore, the structural schematic diagram of an ultra-high voltage arc method detection vehicle for exposed geomembrane damage proposed in an embodiment of the present invention is as follows Figure 1 As shown, it includes a detection vehicle shell 0, a grounding electrode 1, a winding drum 2, a power supply compartment 3, a traction line 4, an electric wire 5 and a power supply 6; wherein, the traction line 4 is placed in the winding drum 2; the power supply 6 is placed in the power supply compartment 3, and a boost module 8 is arranged in the power supply compartment; the positive and negative poles of the boost module are respectively connected to the grounding electrode and the current detector to form an electric field, and the damaged part of the geomembrane is detected according to the principle of electromagnetic induction.

[0019] In a specific embodiment of the present invention:

[0020] The detection device of the present invention first selects a grounding electrode of appropriate weight, installs it in front of the detection vehicle and fixes it with screws. The grounding electrode is in the shape of a pressure wheel. The optional weight given in the embodiment of the present invention is 10kg, 20kg or 30kg. During actual use, it can be changed according to the specific geomembrane situation to ensure that the compacted geomembrane surface remains stable and will not loosen.

[0021] In an embodiment of the present invention, the connection relationship between the grounding electrode and the detection vehicle is a connection structure fixed with detachable screws. This structure enables the detection device proposed by the present invention to flexibly change grounding electrodes of different qualities according to the characteristics of the geomembrane under different terrain conditions; this feature gives the detection process great adaptability and flexibility, and can better meet diverse detection needs. When the detection vehicle steadily moves forward, it can effectively compact the protruding part of the geomembrane, making the geomembrane smoother, thereby greatly increasing the contact area between it and the geomembrane.

[0022] In actual operation, by reasonably selecting the quality of the grounding electrode, different degrees of geomembrane bulge can be effectively dealt with; at the same time, the device proposed by the present invention has strict restrictions on the flatness of the geomembrane when detecting geomembrane damage, and the maximum unevenness of the geomembrane cannot exceed 5%. This strict control of flatness helps to improve the accuracy and reliability of subsequent detection. Meeting the flatness standard can reduce the detection error caused by surface unevenness, thereby more accurately discovering potential damage problems. In addition, the flatness that meets the standard can also ensure the performance and effect of the geomembrane in actual applications, and enhance its stability and reliability.

[0023] The embodiment of the present invention provides a cable reel and a traction rope, which can ensure good contact between the grounding electrode and the geomembrane surface during actual use, and saves effort during the movement of the detection vehicle.

[0024] After connecting the boost module to the power supply, adjust the current detector to the corresponding range, then pull out a wire and move it to the farthest point to form a loop with the ground electrode of the inspection vehicle; it should be noted that before using the boost module, the boost module needs to be preheated to ensure its stable performance.

[0025] The power supply is placed in the power supply compartment and connected to the boost module, so that the relatively low voltage from the power supply is greatly increased to the required high voltage level through the internal electromagnetic induction principle, and connected to the grounding electrode to provide ultra-high voltage to form an electric field. If there are leakage points in the geomembrane, such as tiny cracks, holes or other damage, the insulation performance of these places will be significantly reduced. The electric field will be distorted at these leakage points, resulting in an increase in local electric field strength; when the probe of the current detector passes through the defect, electric spark discharge will occur at the leakage point. This electric spark can be observed by the naked eye, or captured and recorded by special detection equipment.

[0026] When the device of the present invention is used for testing, the whole geomembrane is divided into multiple modules, and then the testing vehicle is pushed in one direction for a certain module, such as Figure 1 As shown, the loose or uneven geomembrane is flattened by the grounding electrode in front of the detection vehicle, so that the grounding electrode is always in contact with the geomembrane, allowing the current detector to generate a current signal. When the detection vehicle passes over the damaged part of the geomembrane, the wire at the far end forms a loop with the grounding electrode to generate electric sparks. The location where the sparks are generated can be marked by observing, thereby obtaining the detection result of geomembrane damage.

[0027] In another specific embodiment of the present invention, a buzzer, an alarm light or other alarm devices may be installed in the detection device so that when damage to the geomembrane is detected, the location of the damage can be automatically recorded.

[0028] After completing the leakage detection of the geomembrane, the power supply, grounding electrode and current detector are disassembled for cleaning and drying operations to ensure the maintenance of the detection device and thus extend its service life.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An ultra-high voltage arc method detection vehicle for exposed geomembrane damage, characterized in that: include: The detection vehicle comprises a shell, a grounding electrode, a cable reel, a power supply compartment, a traction rope and a power supply; the power supply is placed in the power supply compartment, and a boost module is provided in the power supply compartment. The boost module is used to boost the 12V constant voltage power supply of the external lithium battery box to 30KV (or other gears) AC; the positive and negative poles of the boost module are respectively connected to the grounding electrode and the current detector to form an electric field, and the damaged part of the geomembrane is detected according to the principle of electromagnetic induction.

2. The ultra-high voltage arc method detection vehicle for exposed geomembrane damage according to claim 1, characterized in that: The grounding electrode and the detection vehicle housing are fixed with detachable screws.

3. The ultra-high voltage arc method detection vehicle for exposed geomembrane damage according to claim 1, characterized in that: The grounding electrode is in the shape of a pressure wheel and is used to flatten the raised part of the geomembrane.

4. The ultra-high voltage arc method detection vehicle for exposed geomembrane damage according to claim 1, characterized in that: The mass range of the grounding electrode is 10-30 kg.

5. The ultra-high voltage arc method detection vehicle for exposed geomembrane damage according to claim 1, characterized in that: The current detector is provided with a probe, and when the probe passes through the damaged area of ​​the geomembrane, electric sparks are generated according to the principle of electromagnetic induction.

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