阅读说明：本技术 一种土工膜在线渗漏点检测装置 (Online leakage point detection device for geomembrane ) 是由 张明 肖华春 王肖浩博 周广庆 于 2019-11-13 设计创作，主要内容包括：本申请提供了一种土工膜在线渗漏点检测装置,包括机架、导电辊、气压缸、水平横梁、外螺纹杆、绝缘杆、铝板、铜丝毛刷、直流高压发生器、声光报警器；本发明利用土工膜的电绝缘性能,在移动的土工膜上方增加高压直流电,在土工膜的下方安装导电辊,当土工膜上出现孔洞时,高压直流电通过孔洞,将铜丝与导电辊之间的间隙中的空气击穿,造成铜丝与导电辊发生电连接,此时直流高压发生器控制声光报警器开始报警,且PLC控制器发出控制信号将收卷机与放卷机中的电动机停机,以使得土工膜保持静置状态等待修补其上孔洞,可以安装在土工膜生产线上,进行在线渗漏点检测,提高了土工膜在出厂前的质量检测效率与效果。(The application provides an online leakage point detection device for a geomembrane, which comprises a rack, a conductive roller, a pneumatic cylinder, a horizontal beam, an external thread rod, an insulating rod, an aluminum plate, a copper wire brush, a direct current high-voltage generator and an audible and visual alarm; according to the invention, the electric insulation performance of the geomembrane is utilized, high-voltage direct current is added above the moving geomembrane, the conductive roller is arranged below the geomembrane, when a hole appears in the geomembrane, the high-voltage direct current passes through the hole to puncture air in a gap between a copper wire and the conductive roller, so that the copper wire is electrically connected with the conductive roller, at the moment, the direct-current high-voltage generator controls the audible and visual alarm to start alarming, and the PLC sends out a control signal to stop the motor in the winding machine and the unwinding machine, so that the geomembrane is kept in a standing state to wait for repairing the hole in the geomembrane, and the geomembrane can be arranged on a geomembrane production line to carry out online leakage point detection, thereby improving the quality detection efficiency.)

1. An online geomembrane leakage point detection device is characterized by comprising a rack, a conductive roller, a left single-rod double-acting piston type pneumatic cylinder, a right single-rod double-acting piston type pneumatic cylinder, a horizontal cross beam, an external threaded rod, an insulating rod, an aluminum plate, a copper wire hairbrush, a direct current high-voltage generator and an audible and visual alarm;

the frame is of a door frame type structure and comprises a left frame column and a right frame column;

the conductive roller is placed on the left frame column and the right frame column in a horizontal posture, and the axial left end and the axial right end of the conductive roller are respectively arranged on the left frame column and the right frame column through bearings and bearing seats so that the conductive roller can freely rotate and bear and contact the geomembrane;

the cylinder body of the left single-rod double-acting piston type pneumatic cylinder is fixed on the left frame column, the power output end of the piston rod of the left single-rod double-acting piston type pneumatic cylinder is hinged with the left end of the horizontal cross beam, the cylinder body of the right single-rod double-acting piston type pneumatic cylinder is fixed on the right frame column, and the power output end of the piston rod of the right single-rod double-acting piston type pneumatic cylinder is hinged with the right end of the horizontal cross beam so as to be used for driving the horizontal cross beam to lift up and down by the left single-rod double-acting piston type pneumatic cylinder and the right single-rod double-acting piston;

the external threaded rod penetrates through the horizontal cross beam and is placed in a vertical posture, an upper nut is connected to the part, exposed above the horizontal cross beam, of the external threaded rod in a threaded mode, a lower nut is connected to the part, exposed below the horizontal cross beam, of the external threaded rod in a threaded mode, the external threaded rod is fixed to the horizontal cross beam through the matching of the upper nut and the lower nut, and the external threaded rod is used for lifting in the vertical direction through screwing the upper nut and the lower nut;

the bottom end of the external thread rod is provided with an insulating rod;

the bottom end of the insulating rod is provided with an aluminum plate, and the aluminum plate is hung on the horizontal cross beam through a plurality of external threaded rods and the insulating rod and is used for driving the aluminum plate to lift up and down by the lifting of the horizontal cross beam in the up-down direction and/or the lifting of the external threaded rods in the up-down direction;

the bottom surface of the aluminum plate is provided with a copper wire brush, and each copper wire in the copper wire brush is electrically connected with the aluminum plate;

the copper wire hairbrush is positioned above the conductive roller, and a gap exists between each copper wire in the copper wire hairbrush and the cylindrical surface of the conductive roller so that the geomembrane to be detected can penetrate through the gap;

the intermediate frequency output terminal on the control box in the direct current high voltage generator is electrically connected with the input terminal on the voltage doubling cylinder through an electric wire, and the grounding terminal on the control box in the direct current high voltage generator is electrically connected with the ground through an electric wire to realize grounding connection;

a high-voltage output terminal of a voltage doubling cylinder in the direct-current high-voltage generator is electrically connected with the aluminum plate through an electric wire so as to provide high-voltage direct current for each copper wire, a ground wire output terminal of the voltage doubling cylinder in the direct-current high-voltage generator is electrically connected with the conductive roller through an electric wire, and the conductive roller is electrically connected with the ground through an electric wire to realize grounding connection;

and the audible and visual alarm is electrically connected with a control box in the direct-current high-voltage generator through an electric wire so as to control the audible and visual alarm to start alarming when the copper wire is electrically connected with the conductive roller.

2. The geomembrane online leakage point detection device according to claim 1, further comprising a winding machine for winding the geomembrane into a roll, an unwinding machine for unwinding the geomembrane roll and a PLC controller for automatic control;

one end of the geomembrane penetrating through a gap between the copper wire and the cylindrical surface of the conductive roller is wound on the unreeling machine, and the other end of the geomembrane penetrating through a gap between the copper wire and the cylindrical surface of the conductive roller is wound on the reeling machine so as to be used for driving the geomembrane to move forwards by the power provided by the reeling machine;

the PLC is electrically connected with a control box in the direct-current high-voltage generator through a wire, so that when the copper wire is electrically connected with the conductive roller, the control box sends a control signal to the PLC;

the PLC controller is respectively and electrically connected with the motors in the winding machine and the unwinding machine through electric wires, so that when the PLC controller receives control signals sent by the control box, the PLC controller sends the control signals to stop the motors in the winding machine and the unwinding machine.

3. The geomembrane online leakage point detecting device according to claim 1, wherein a cylinder body of the left single-rod double-acting piston type pneumatic cylinder is welded and fixed on the left frame column, and an axial center line of a piston rod of the left single-rod double-acting piston type pneumatic cylinder is parallel to a vertical direction;

the cylinder body of the right single-rod double-acting piston type pneumatic cylinder is welded and fixed on the right frame column, and the axial center line of the piston rod of the right single-rod double-acting piston type pneumatic cylinder is parallel to the vertical direction.

Technical Field

The invention relates to the technical field of geomembrane leakage point detection, in particular to an online geomembrane leakage point detection device.

Background

The geomembrane is a waterproof barrier material taking a high molecular polymer as a basic raw material, and mainly comprises the following components: the low-density polyethylene (LDPE) geomembrane, the high-density polyethylene (HDPE) geomembrane and the EVA geomembrane have excellent environmental stress cracking resistance and chemical corrosion resistance, have a large service temperature range and a long service life, are applied to refuse landfills, tailing storage fields, canal seepage prevention, dam seepage prevention, subway engineering and the like, and have the main mechanism that a water leakage channel is separated by the impermeability of a plastic film, and the large tensile strength and the large elongation rate of the plastic film bear water pressure and adapt to field deformation.

The composite geomembrane is a geomembrane used as an anti-seepage base material and is a geotechnical anti-seepage material compounded with non-woven fabrics, wherein the non-woven fabrics are high-molecular short fiber chemical materials and are formed by needling or hot bonding, so that the composite geomembrane has high tensile strength and extensibility, after the composite geomembrane is combined with the geomembrane, the tensile strength and puncture resistance of a plastic film are increased, the friction coefficient of a contact surface is increased due to the rough surface of the non-woven fabrics, the composite geomembrane and a protective layer are favorably stabilized, and meanwhile, the composite geomembrane has good erosion resistance to bacteria and chemical action, is not afraid of the erosion of acid, alkali and salts, and has long service life under the condition of being used in a.

The detection result of the leakage positions of a large amount of geomembranes shows that a large amount of damages are caused by construction: about 24% of the failures occurred during the geomembrane installation construction phase, about 73% of the failures occurred during the geomembrane overburden laying construction phase, and about 2% of the failures occurred during the post-operational phase.

The HDPE geomembrane electric leakage damage detection method is the most reliable and effective method for detecting leakage damage of the current anti-seepage HDPE geomembrane. The basic principle of the HDPE geomembrane electrical leakage damage detection method is that an electric field is applied to an HDPE geomembrane, and a leakage point is found by moving the position of a detection device detecting a loop in the electric field. The main two modes for HDPE geomembrane electrical leakage damage detection are as follows: the two-electrode method and the water gun method. The double-electrode method is suitable for leakage damage detection under the condition that the HDPE geomembrane is covered by sand/soil, and the water gun method is suitable for leakage damage detection on the surface of the exposed HDPE geomembrane without any covering.

In the production process of the geomembrane, holes with different sizes are often generated due to impurities in raw materials, stiff blocks caused by a production process and the like. At present, the hole detection equipment on the geomembrane production line mainly adopts a CCD camera for photographing detection, and the process has the following defects: 1) the process completely loses effect on white transparent geomembranes; 2) for a black geomembrane, a false alarm phenomenon can also be generated when white stains are formed on the geomembrane; 3) when the hole damage point of the geomembrane is very small, the light transmission is very small, and the camera cannot detect the light transmission; 4) high cost, import of key parts, too large limitation and incapability of guaranteeing maintenance.

Therefore, how to provide an online leakage point detection device of geomembrane installs on the geomembrane production line, carries out online leakage point detection to the geomembrane that has just produced, will not have the geomembrane of leakage point to batch into finished product book after the detection is accomplished to wait to sell to improve geomembrane quality testing efficiency and quality detection effect before dispatching from the factory, the technical problem that technical staff in the field need to solve urgently.

Disclosure of Invention

The embodiment of the invention aims to provide an online leakage point detection device for a geomembrane.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

an online leakage point detection device for a geomembrane comprises a frame, a conductive roller, a left single-rod double-acting piston type pneumatic cylinder, a right single-rod double-acting piston type pneumatic cylinder, a horizontal cross beam, an external threaded rod, an insulating rod, an aluminum plate, a copper wire hairbrush, a direct current high-voltage generator and an audible and visual alarm;

the frame is of a door frame type structure and comprises a left frame column and a right frame column;

the conductive roller is placed on the left frame column and the right frame column in a horizontal posture, and the axial left end and the axial right end of the conductive roller are respectively arranged on the left frame column and the right frame column through bearings and bearing seats so that the conductive roller can freely rotate and bear and contact the geomembrane;

the cylinder body of the left single-rod double-acting piston type pneumatic cylinder is fixed on the left frame column, the power output end of the piston rod of the left single-rod double-acting piston type pneumatic cylinder is hinged with the left end of the horizontal cross beam, the cylinder body of the right single-rod double-acting piston type pneumatic cylinder is fixed on the right frame column, and the power output end of the piston rod of the right single-rod double-acting piston type pneumatic cylinder is hinged with the right end of the horizontal cross beam so as to be used for driving the horizontal cross beam to lift up and down by the left single-rod double-acting piston type pneumatic cylinder and the right single-rod double-acting piston;

the external threaded rod penetrates through the horizontal cross beam and is placed in a vertical posture, an upper nut is connected to the part, exposed above the horizontal cross beam, of the external threaded rod in a threaded mode, a lower nut is connected to the part, exposed below the horizontal cross beam, of the external threaded rod in a threaded mode, the external threaded rod is fixed to the horizontal cross beam through the matching of the upper nut and the lower nut, and the external threaded rod is used for lifting in the vertical direction through screwing the upper nut and the lower nut;

the bottom end of the external thread rod is provided with an insulating rod;

the bottom end of the insulating rod is provided with an aluminum plate, and the aluminum plate is hung on the horizontal cross beam through a plurality of external threaded rods and the insulating rod and is used for driving the aluminum plate to lift up and down by the lifting of the horizontal cross beam in the up-down direction and/or the lifting of the external threaded rods in the up-down direction;

the bottom surface of the aluminum plate is provided with a copper wire brush, and each copper wire in the copper wire brush is electrically connected with the aluminum plate;

the copper wire hairbrush is positioned above the conductive roller, and a gap exists between each copper wire in the copper wire hairbrush and the cylindrical surface of the conductive roller so that the geomembrane to be detected can penetrate through the gap;

the intermediate frequency output terminal on the control box in the direct current high voltage generator is electrically connected with the input terminal on the voltage doubling cylinder through an electric wire, and the grounding terminal on the control box in the direct current high voltage generator is electrically connected with the ground through an electric wire to realize grounding connection;

a high-voltage output terminal of a voltage doubling cylinder in the direct-current high-voltage generator is electrically connected with the aluminum plate through an electric wire so as to provide high-voltage direct current for each copper wire, a ground wire output terminal of the voltage doubling cylinder in the direct-current high-voltage generator is electrically connected with the conductive roller through an electric wire, and the conductive roller is electrically connected with the ground through an electric wire to realize grounding connection;

and the audible and visual alarm is electrically connected with a control box in the direct-current high-voltage generator through an electric wire so as to control the audible and visual alarm to start alarming when the copper wire is electrically connected with the conductive roller.

Preferably, the device also comprises a winding machine for winding the geomembrane into a roll, an unreeling machine for unreeling the geomembrane roll and a PLC (programmable logic controller) for automatic control;

one end of the geomembrane penetrating through a gap between the copper wire and the cylindrical surface of the conductive roller is wound on the unreeling machine, and the other end of the geomembrane penetrating through a gap between the copper wire and the cylindrical surface of the conductive roller is wound on the reeling machine so as to be used for driving the geomembrane to move forwards by the power provided by the reeling machine;

the PLC is electrically connected with a control box in the direct-current high-voltage generator through a wire, so that when the copper wire is electrically connected with the conductive roller, the control box sends a control signal to the PLC;

the PLC controller is respectively and electrically connected with the motors in the winding machine and the unwinding machine through electric wires, so that when the PLC controller receives control signals sent by the control box, the PLC controller sends the control signals to stop the motors in the winding machine and the unwinding machine.

Preferably, a cylinder body of the left single-rod double-acting piston type pneumatic cylinder is welded and fixed on the left frame column, and an axial center line of a piston rod of the left single-rod double-acting piston type pneumatic cylinder is parallel to the vertical direction;

the cylinder body of the right single-rod double-acting piston type pneumatic cylinder is welded and fixed on the right frame column, and the axial center line of the piston rod of the right single-rod double-acting piston type pneumatic cylinder is parallel to the vertical direction.

The application provides an online leakage point detection device for a geomembrane, which comprises a rack, a conductive roller, a left single-rod double-acting piston type pneumatic cylinder, a right single-rod double-acting piston type pneumatic cylinder, a horizontal cross beam, an external threaded rod, an insulating rod, an aluminum plate, a copper wire hairbrush, a direct current high-voltage generator and an audible and visual alarm;

the invention utilizes the electrical insulation performance of the geomembrane, adds a certain amount of high-voltage direct current above the moving geomembrane, installs a conductive roller below the geomembrane, when a hole appears on the geomembrane, the high-voltage direct current passes through the hole to puncture the air in the gap between the copper wire and the conductive roller, generates arc discharge to cause the copper wire to be electrically connected with the conductive roller to form a circuit of a passage, at the moment, a control box in a direct current high-voltage generator controls an audible and visual alarm to start alarming, and a PLC (programmable logic controller) sends out a control signal to stop a motor in a winding machine and a winding machine so as to lead the geomembrane to stop moving forwards and keep a standing state to wait for repairing the hole on which the geomembrane is found, thus the invention provides the online leakage point detection device of the geomembrane, which is installed on a geomembrane production line to carry out online leakage point detection on the geom, after the detection is finished, the geomembrane without the leakage point is rolled into a finished product roll to be sold, so that the quality detection efficiency and the quality detection effect of the geomembrane before leaving the factory are improved.

Drawings

Fig. 1 is a schematic structural diagram of an online geomembrane leakage point detection device according to an embodiment of the present invention.

In the figure: the device comprises a frame 1, a frame column on the left of 101, a frame column on the right of 102, a conductive roller 2, a bearing seat 201, a double-acting piston type pneumatic cylinder with a single rod on the left of 3, a double-acting piston type pneumatic cylinder with a single rod on the right of 4, a horizontal cross beam 5, an external threaded rod 6, an upper nut 601, a lower nut 602, an insulating rod 7, an aluminum plate 8, a copper wire hairbrush 9, a direct current high-voltage generator 10, a control box 1001, a pressure doubling cylinder 1002 and an audible and visual alarm 11.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "axial," "radial," "longitudinal," "transverse," "length," "width," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings and are only used for convenience in describing and simplifying the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first", "second", may explicitly or implicitly include one or more of the features.

In the present invention, unless otherwise expressly stated or limited, the first feature being "on" or "under" the second feature may comprise the first and second features being in direct contact, or the first and second features being in contact, not directly, but via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1, fig. 1 is a schematic structural view of an online geomembrane leakage point detection device according to an embodiment of the present invention.

The application provides an online leakage point detection device for a geomembrane, which comprises a rack 1, a conductive roller 2, a left single-rod double-acting piston type pneumatic cylinder 3, a right single-rod double-acting piston type pneumatic cylinder 4, a horizontal cross beam 5, an external thread rod 6, an insulating rod 7, an aluminum plate 8, a copper wire brush 9, a direct current high-voltage generator 10 and an audible and visual alarm 11;

the frame 1 is of a door frame type structure and comprises a left frame column 101 and a right frame column 102;

the conductive roller 2 is placed on the left frame column 101 and the right frame column 102 in a horizontal posture, and the axial left end and the axial right end of the conductive roller 2 are respectively arranged on the left frame column 101 and the right frame column 102 through a bearing and a bearing seat 201 so that the conductive roller 2 can freely rotate and bear and contact the geomembrane;

the cylinder body of the left single-rod double-acting piston type pneumatic cylinder 3 is fixed on the left frame column 101, the power output end of the piston rod of the left single-rod double-acting piston type pneumatic cylinder 3 is hinged with the left end of the horizontal cross beam 5, the cylinder body of the right single-rod double-acting piston type pneumatic cylinder 4 is fixed on the right frame column 102, the power output end of the piston rod of the right single-rod double-acting piston type pneumatic cylinder 4 is hinged with the right end of the horizontal cross beam 5, and the left single-rod double-acting piston type pneumatic cylinder 3 and the right single-rod double-acting piston type pneumatic cylinder 4 are used for driving the horizontal cross beam 5 to lift up and;

the external screw rod 6 penetrates through the horizontal beam 5 and is placed in a vertical posture, an upper nut 601 is screwed on the part of the external screw rod 6 exposed above the horizontal beam 5, a lower nut 602 is screwed on the part of the external screw rod 6 exposed below the horizontal beam 5, and the external screw rod 6 is fixed on the horizontal beam 5 through the matching of the upper nut 601 and the lower nut 602 so as to lift the external screw rod 6 in the vertical direction by screwing the upper nut 601 and the lower nut 602;

the bottom end of the external thread rod 6 is provided with an insulating rod 7;

an aluminum plate 8 is arranged at the bottom end of the insulating rod 7, and the aluminum plate 8 is hung on the horizontal cross beam 5 through a plurality of external threaded rods 6 and the insulating rod 7 so as to be driven to lift up and down by the up-and-down lifting of the horizontal cross beam 5 and/or the up-and-down lifting of the external threaded rods 6;

the bottom surface of the aluminum plate 8 is provided with copper wire brushes 9, and each copper wire in the copper wire brushes 9 is electrically connected with the aluminum plate 8;

the copper wire hairbrush 9 is positioned above the conductive roller 2, and a gap exists between each copper wire in the copper wire hairbrush 9 and the cylindrical surface of the conductive roller 2 so that the geomembrane to be detected can penetrate through the gap;

an intermediate frequency output terminal on a control box 1001 in the direct current high voltage generator 10 is electrically connected with an input terminal on the voltage doubling cylinder 1002 through a wire, and a grounding terminal on the control box 1001 in the direct current high voltage generator 10 is electrically connected with the ground through a wire to realize grounding connection;

the high-voltage output terminal of the voltage doubling cylinder 1002 in the direct-current high-voltage generator 10 is electrically connected with the aluminum plate 8 through an electric wire so as to provide high-voltage direct current for each copper wire, the ground wire output terminal of the voltage doubling cylinder 1002 in the direct-current high-voltage generator 10 is electrically connected with the conductive roller 2 through an electric wire, and the conductive roller 2 is electrically connected with the ground through an electric wire to realize grounding connection;

the audible and visual alarm 11 is electrically connected with a control box 1001 in the direct current high voltage generator 10 through an electric wire so as to control the audible and visual alarm 11 to start alarming when the copper wire is electrically connected with the conductive roller 2.

In an embodiment of the application, the geomembrane online leakage point detecting device further includes a winding machine for winding the geomembrane into a roll, an unreeling machine for unreeling the geomembrane roll, and a PLC controller for automatic control;

one end of the geomembrane penetrating through a gap between the copper wire and the cylindrical surface of the conductive roller 2 is wound on the unreeling machine, and the other end of the geomembrane penetrating through a gap between the copper wire and the cylindrical surface of the conductive roller 2 is wound on the reeling machine so as to be used for driving the geomembrane to move forwards by the power provided by the reeling machine;

the PLC is electrically connected with a control box 1001 in the direct current high voltage generator 10 through a wire, so that when a copper wire is electrically connected with the conductive roller 2, the control box 1001 sends a control signal to the PLC;

the PLC controller is electrically connected with the motors in the winding machine and the unwinding machine through electric wires respectively, so that when the PLC controller receives control signals sent by the control box 1001, the PLC controller sends the control signals to stop the motors in the winding machine and the unwinding machine.

In one embodiment of the present application, the cylinder body of the left single-rod double-acting piston pneumatic cylinder 3 is welded and fixed on the left frame column 101, and the axial center line of the piston rod of the left single-rod double-acting piston pneumatic cylinder 3 is parallel to the vertical direction;

the cylinder body of the right single-rod double-acting piston type pneumatic cylinder 4 is welded and fixed on the right frame column 102, and the axial center line of the piston rod of the right single-rod double-acting piston type pneumatic cylinder 4 is parallel to the vertical direction.

The application provides an online leakage point detection device for a geomembrane, which comprises a rack 1, a conductive roller 2, a left single-rod double-acting piston type pneumatic cylinder 3, a right single-rod double-acting piston type pneumatic cylinder 4, a horizontal cross beam 5, an external thread rod 6, an insulating rod 7, an aluminum plate 8, a copper wire brush 9, a direct current high-voltage generator 10 and an audible and visual alarm 11;

the invention utilizes the electrical insulation performance of the geomembrane, adds a certain amount of high-voltage direct current above the moving geomembrane, installs a conductive roller 2 below the geomembrane, when a hole appears on the geomembrane, the high-voltage direct current passes through the hole to puncture the air in the gap between the copper wire and the conductive roller 2, generates arc discharge to cause the copper wire to be electrically connected with the conductive roller 2 to form a circuit of a passage, at the moment, a control box 1001 in a direct current high-voltage generator 10 controls an audible and visual alarm 11 to start alarming, and a PLC (programmable logic controller) sends out a control signal to stop a motor in a winding machine and an unwinding machine so as to lead the geomembrane to stop walking forwards, and keeps a standing state to wait for repairing the hole found on the geomembrane, thus the application provides the online leakage point detection device of the geomembrane, which is installed on a geomembrane production line to carry out online leakage point detection on the geomembra, after the detection is finished, the geomembrane without the leakage point is rolled into a finished product roll to be sold, so that the quality detection efficiency and the quality detection effect of the geomembrane before leaving the factory are improved.

Methods and devices not described in detail in the present invention are all the prior art and are not described in detail.

The principles and embodiments of the present invention are explained herein using specific examples, which are set forth only to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.