CN111749286A

CN111749286A - Leakage detection device

Info

Publication number: CN111749286A
Application number: CN202010547879.7A
Authority: CN
Inventors: 刘景财; 刘玉强; 徐亚; 姚光远; 郑开达; 董路; 能昌信; 孙晓晨
Original assignee: Chinese Research Academy of Environmental Sciences
Current assignee: Chinese Research Academy of Environmental Sciences
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2020-10-09

Abstract

The application relates to the technical field of leakage detection equipment, and provides a leakage detection device which comprises a detection pipeline, a detector and a receiver; the detection pipeline is laid below the anti-seepage structure and is provided with a seepage hole; the detector is provided with a positioning device and can move in the detection pipeline and detect the leakage condition of the permeation hole; the receiver is electrically connected with the detector and used for receiving the detection information and the position information of the detector in the detection pipeline. This leakage detection device passes through the detector and removes and detect the seepage condition of infiltration hole in detecting the pipeline, can accurately detect the leakage point, has simple structure, is convenient for the construction and builds, advantage that the cost is with low costs.

Description

Leakage detection device

Technical Field

The application relates to the technical field of leakage detection equipment, in particular to a leakage detection device.

Background

The landfill site is used for landfill of various waste garbage, an anti-seepage structure is required to be arranged below the site in the construction process so as to prevent the garbage percolate in the landfill site from seeping and polluting underground water, and common anti-seepage structures comprise anti-seepage films, anti-seepage layers and the like.

In the prior art, after the landfill site is filled with garbage, an underground monitoring well is generally arranged at the downstream of the landfill site, whether the impermeable layer leaks or not is detected by the underground monitoring well, but specific leakage points in the impermeable layer cannot be accurately positioned, so that effective measures cannot be taken to repair the impermeable film at fixed points.

In the prior art, some of the more advanced landfill sites are constructed by adopting an electrode grid method to detect leakage points, for example, the technical scheme adopted by the prior patent CN2662240 is as follows: laying at least one transmitting electrode above the impermeable membrane, and burying a receiving electrode in the soil below the impermeable membrane; at least one detection electrode is laid under the direct current power supply anti-seepage membrane, a reference electrode is laid outside the landfill area, and the detection electrode and the reference electrode are connected to a leakage detector; the leakage detector mainly comprises a host, a main control box and a data acquisition box. The leak of the impermeable membrane can be accurately positioned by using dipole detection based on a double-electrode method and block detection based on an electrode grid method. However, the detection of the leakage point by the electrode grid method has many disadvantages, such as the need to lay an electrode cable in advance when constructing a landfill, high manufacturing cost, complicated construction, and short detection life.

Disclosure of Invention

In view of this, the present application provides a leakage detection device, which is used to solve the problems of high cost, complex construction and short service life of the leakage detection device in the landfill site in the prior art.

The leakage detection device provided by the application comprises a detection pipeline, a detector and a receiver;

the detection pipeline is laid below the anti-seepage structure and is provided with a seepage hole;

the detector is provided with a positioning device and can move in the detection pipeline and detect the leakage condition of the permeation hole;

the receiver is electrically connected with the detector and used for receiving the detection information and the position information of the detector in the detection pipeline.

In one possible design, the detection conduit comprises a drain conduit;

the drainage guide pipeline is arranged below the anti-seepage structure, and the drainage guide pipeline is arranged in parallel at intervals.

In one possible design, the detection conduit further comprises a communication conduit;

the communicating pipelines are respectively arranged at two ends of the guide and discharge pipeline and respectively communicate the guide and discharge pipelines.

In one possible design, the detection conduit further comprises an on-off valve;

the switch valves are respectively arranged at two ends of the guide and discharge pipeline and can adjust the communication state of the guide and discharge pipeline and the communication pipeline.

In one possible design, a side of the drainage guide pipe facing the seepage-proofing structure is provided with a seepage hole;

and the peripheral wall and the end part of the communicating pipeline are both provided with permeation holes.

In one possible design, the leak detection apparatus further comprises a detection well;

the detection well is communicated with the communicating pipeline along the vertical direction.

In one possible design, the detection wells include an upstream detection well and a downstream detection well in the groundwater flow direction;

the upstream detection well is communicated with the communication pipeline positioned at the upstream of the discharge guide pipeline;

the downstream detection well is communicated with the communication pipeline positioned at the downstream of the discharge guide pipeline.

In one possible design, a suction pump is provided in the upstream and downstream inspection wells.

In one possible design, the detector is a pipe crawler;

the pipeline crawling vehicle is provided with a searchlight camera and an anti-skidding crawler wheel.

In one possible design, the leak detection device further comprises a manipulator;

the manipulator is electrically connected with the detector through a cable and is used for manipulating the motion state of the detector in the detection pipeline.

By combining the technical scheme, the beneficial effects of the method are analyzed as follows:

the leakage detection device provided by the application comprises a detection pipeline, a detector and a receiver; the detection pipeline is laid below the anti-seepage structure and is provided with a seepage hole; the detector is provided with a positioning device and can move in the detection pipeline and detect the leakage condition of the permeation hole; the receiver is electrically connected with the detector and used for receiving the detection information and the position information of the detector in the detection pipeline.

This leakage detection device can specifically cooperate the landfill to use, when the damaged seepage appears in somewhere position point location in the seepage prevention structure in the landfill, the penetrant of seepage can be through during the infiltration hole drips the detection pipeline, the detector in the detection pipeline alright detect the infiltration hole condition of appearing the penetrant this moment, and will detect information, positional information sends for the receiver, detection personnel alright know the problem that the seepage prevention structure in the landfill appears damaged seepage and the specific accurate position of seepage point through the receiver, thereby can in time excavate the repair to the seepage point in the landfill, in order to prevent that the penetrant from polluting the groundwater environment.

Compared with the mode of detecting the leakage points of the landfill site by an electrode grid method in the prior art, the leakage detection device has the advantages of simple structure, convenience in construction and construction, low manufacturing cost and long service life.

It should be noted that, in order to prevent the detection pipeline in the leakage detection device from being overloaded, pressed and collapsed, a supporting protection frame may be further disposed between the anti-seepage structure and the leakage detection device to share the ballast of the leakage detection device.

Additional features and advantages of embodiments of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of embodiments of the present application. The objectives and other advantages of the embodiments of the application will be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

FIG. 1 is a schematic diagram of a leak detection apparatus according to an embodiment of the present disclosure;

FIG. 2 is a top view of a leak detection apparatus provided in accordance with an embodiment of the present application;

fig. 3 is a front view of a leak detection apparatus according to an embodiment of the present application.

Reference numerals:

1-detecting a pipeline;

11-a guide and discharge pipeline;

111-penetration holes;

12-a connecting duct;

13-a switching valve;

2-a detector;

3-detecting the well;

31-an upstream detection well;

32-downstream detection wells;

4-landfill site.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Detailed Description

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and not all 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 application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

The following describes a specific embodiment of the leak detector according to the structure of the leak detector provided in the embodiments of the present application.

As shown in fig. 1 to 3, the present embodiment provides a leak detection apparatus, which includes a detection pipe 1, a detector 2, and a receiver; the detection pipeline 1 is laid below the anti-seepage structure, and the detection pipeline 1 is provided with a seepage hole 111; the detector 2 is provided with a positioning device and can move in the detection pipeline 1 and detect the leakage condition of the permeation holes 111; the receiver is electrically connected with the detector 2 and is used for receiving the detection information and the position information of the detector 2 in the detection pipeline 1.

This leakage detection device can specifically cooperate landfill 4 to use, when the damaged seepage appears in somewhere position point position in the seepage prevention structure in landfill 4, the penetrant of seepage can be through during infiltration hole 111 drippage detects pipeline 1, detector 2 in detecting pipeline 1 alright detect the condition that infiltration hole 111 appears the penetrant this moment, and with the detection information, positional information sends for the receiver, detection personnel alright know the problem that the seepage prevention structure in the landfill appears the damaged seepage and the specific accurate position of seepage point through the receiver, thereby can in time excavate the repair to the seepage point in the landfill, in order to prevent that the penetrant from polluting groundwater environment.

It should be noted that, in order to prevent the detection pipe 1 in the leakage detection apparatus from being collapsed due to overload, a supporting protection frame may be further disposed between the anti-seepage structure and the leakage detection apparatus to share the ballast of the leakage detection apparatus.

In addition, the detection pipeline 1 may be specifically configured as a pipeline or a channel, and when configured as a pipeline, the detection pipeline may be optionally configured as a HDPE (High Density Polyethylene) pipe; when selecting to be the channel, can set up arch support cover plate in the one side of the orientation seepage prevention structure of channel, set up infiltration hole 111 in arch support cover plate.

In addition, the positioning device in the detector 2 may be provided as a GPS positioning device.

In an alternative of this embodiment, the detection duct 1 comprises a drainage duct 11; the guide and drainage pipeline 11 is arranged under the anti-seepage structure, and the guide and drainage pipelines 11 are arranged in parallel at intervals.

Specifically, as shown in fig. 1 and fig. 2, the guide and exhaust duct 11 is specifically configured as an HDPE duct, and the diameter of the guide and exhaust duct 11 is specifically selected to be larger than 150mm, so that the detector 2 can move smoothly in the guide and exhaust duct 11; the spacing distance between the guide and discharge pipelines 11 can be set between 3m and 6m, such as 3m spacing, 4m spacing, 5m spacing, 6m spacing and the like, the leakage detection accuracy of the anti-seepage structure in the landfill site 4 can be reduced when the spacing between the guide and discharge pipelines 11 is too large, the influence on the underground water diversion layer can be caused when the spacing between the guide and discharge pipelines 11 is too small, and the laying cost is increased. Therefore, the distance between the drainage guide pipelines 11 can be selected to be 5m, so that when the drainage guide pipelines 11 are laid, the influence of the drainage guide pipelines 11 on an underground water drainage layer can be reduced, and the detection accuracy of the leakage detection device can be ensured.

In an alternative of this embodiment, the detection duct 1 further comprises a communication duct 12; the communicating pipes 12 are respectively provided at both ends of the guide and exhaust pipe 11, and respectively communicate the plurality of guide and exhaust pipes 11.

Specifically, as shown in fig. 1 and 2, the diameter of the communication pipe 12 may be set to be larger than the diameter of the drainage pipe 11, the communication pipes 12 are respectively disposed at two ends of the drainage pipe 11, and the drainage pipes 11 are respectively communicated with each other, so that when the groundwater guided by each drainage pipe 11 is introduced, the communication pipes 12 can respectively converge at the upstream and downstream of the drainage pipe 11 along the flow direction of the groundwater, and thus when the seepage-proofing structure at any point in the landfill site 4 is damaged and leaked, the leaked seepage fluid finally converges to the communication pipe 12 at the downstream.

Can be convenient for the daily water sample of collection of measurement personnel like this, measurement personnel only need regularly gather the water sample and detect from the communicating pipe 12 of guide-drain pipeline 11 low reaches, can qualitative analysis find out detect whether damaged seepage takes place for the seepage prevention structure in landfill 4, when taking place damaged seepage, rethread detector 2 examines each guide-drain pipeline 11 to accurately obtain the leaking point, and excavate and repair.

In an alternative of this embodiment, the detection conduit 1 further comprises a switch valve 13; the open/close valves 13 are provided at both ends of the introduction/discharge duct 11, respectively, and can adjust the communication state between the introduction/discharge duct 11 and the communication duct 12.

Specifically, as shown in fig. 2, the above-mentioned switch valve 13 may be specifically set to be a normally open valve, so that both ends of the conduit 11 are kept in normally open communication with the communication pipe 12, and when the anti-seepage structure in the landfill site 4 is damaged and leaked, both ends of the conduit 11 may be temporarily closed by the switch valve 13 so as to be temporarily disconnected from the communication pipe 12, so that water in the communication pipe 12 located upstream of the conduit 11 cannot enter, and water containing a penetrating fluid in the conduit 11 cannot enter the communication pipe 12 located downstream, and at this time, the detection pipe 1 may function to temporarily stop the groundwater, so as to prevent the penetrating fluid in the conduit 11 from further diffusing to the downstream water body.

In the alternative of this embodiment, one side of the drainage guide channel 11 facing the impermeable structure is provided with a permeable hole 111; the communication pipe 12 has penetration holes 111 in its peripheral wall and its end.

Specifically, as shown in fig. 2, the penetration holes 111 may be uniformly arranged on the drainage guide pipe 11 and the communication pipe 12, for example, one penetration hole 111 is arranged at an interval of 10 cm.

Only the permeation holes 111 are arranged on one side of the drainage guide pipeline 11 facing the anti-seepage structure, so that on one hand, when the anti-seepage structure is damaged and leaked, leaked permeation liquid can enter the drainage guide pipeline 11; on the other hand, the permeate entering the drainage conduit 11 can only flow along the drainage conduit 11 to the downstream communication conduit 12 without further infiltration and diffusion.

The penetration holes 111 are formed in the peripheral wall and the end of the communication pipe 12, so that the communication pipe 12 into which the groundwater upstream of the drain pipe 11 can better penetrate and the groundwater downstream of the drain pipe 11 can better flow out and penetrate through the communication pipe 12.

In an alternative of this embodiment, the leak detection apparatus further comprises a detection well 3; the detection well 3 is communicated with the communication pipeline 12 along the vertical direction.

Specifically, as shown in fig. 1 and 3, the detection well 3 is communicated with the communication pipeline 12 along the vertical direction, so that the detection personnel can conveniently collect a water sample in the communication pipeline 12, and the detection personnel can directly take water from the detection well 3 through the water bucket for inspection.

In an alternative of this embodiment, the detection well 3 comprises, in the groundwater flow direction, an upstream detection well 31 and a downstream detection well 32; the upstream detection well 31 is communicated with the communication pipeline 12 positioned at the upstream of the guide and discharge pipeline 11; the downstream detection well 32 communicates with the communication pipe 12 located downstream of the drain pipe 11.

Specifically, as shown in fig. 1 and fig. 2, the detection wells 3 are respectively arranged in the groundwater flow direction as an upstream detection well 31 communicated with the communication pipe 12 located at the upstream of the drainage pipe 11 and a downstream detection well 32 communicated with the communication pipe 12 located at the downstream of the drainage pipe 11, so that a detector can simultaneously collect water samples from the upstream detection well 31 and the downstream detection well 32, and can more accurately analyze whether the seepage-proofing structure in the landfill 4 is damaged or not by comparing and analyzing the two reclaimed water samples.

In an alternative of this embodiment, water pumps are respectively disposed in the upstream detection well 31 and the downstream detection well 32.

The water pump is arranged in the upstream detection well 31, so that when the seepage-proofing structure in the landfill site 4 is damaged and leaked, the two ends of the guide and discharge pipeline 11 are temporarily closed by the switch valve 13, the intercepted underground water in the upstream detection well 31 can be guided to other parts by the water pump in the upstream detection well 31, and the residual flowing ground water in the downstream detection well 32 can be guided to other parts by the water pump in the downstream detection well 32, so that further downstream soil seepage is prevented.

In an alternative of this embodiment, the detector 2 is a pipe crawler; the pipeline crawling vehicle is provided with a searchlight camera and an anti-skidding crawler wheel.

Specifically, as shown in fig. 1 and fig. 2, the detector 2 is set as a pipeline crawler, and the leakage condition of the penetration hole 111 in the drain pipeline 11 can be shot in real time by a search camera in the pipeline crawler, so that the anti-slip crawler wheel in the pipeline crawler has strong anti-slip capability, and can adapt to a humid and complex advancing scene in the drain pipeline 11.

In an alternative of this embodiment, the leak detection device further comprises a manipulator; the manipulator is electrically connected with the detector 2 by a cable for manipulating the motion state of the detector 2 in the detection pipeline 1.

The controller is electrically connected with the detector 2 through a cable, so that a user can control the motion state of the detector 2 in the guide duct 11 according to the real-time shooting condition of the searchlight camera in the detector 2, control information is transmitted through the cable, and the controller has the advantages of high stability and strong anti-interference capability.

Moreover, the above-described cable may also be used to transmit shooting information of the search camera in the detector 2 and to transmit electric power to the detector 2.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A leak detection apparatus, comprising:

the detection pipeline (1) is laid below the anti-seepage structure, and the detection pipeline (1) is provided with a penetration hole (111);

a detector (2), wherein the detector (2) is provided with a positioning device and can move in the detection pipeline (1) and detect the leakage condition of the permeation hole (111);

a receiver electrically connected with the detector (2) and used for receiving the detection information and the position information of the detector (2) in the detection pipeline (1).

2. Leak detection device according to claim 1, wherein the detection duct (1) comprises a drain duct (11);

the drainage guide pipeline (11) is arranged below the anti-seepage structure, and the drainage guide pipeline (11) is arranged in parallel at intervals.

3. Leak detection device according to claim 2, wherein the detection duct (1) further comprises a communication duct (12);

the communicating pipelines (12) are respectively arranged at two ends of the guide and discharge pipeline (11) and respectively communicate the guide and discharge pipelines (11).

4. Leak detection device according to claim 3, wherein the detection conduit (1) further comprises a switch valve (13);

the switch valves (13) are respectively arranged at two ends of the guide and discharge pipeline (11) and can adjust the communication state of the guide and discharge pipeline (11) and the communication pipeline (12).

5. The leak detection device according to claim 3, wherein a side of the drainage duct (11) facing the seepage-proofing structure is provided with a penetration hole (111);

the peripheral wall and the end part of the communication pipeline (12) are both provided with permeation holes (111).

6. Leak detection device according to claim 3, further comprising a detection well (3);

the detection well (3) is communicated with the communication pipeline (12) along the vertical direction.

7. Leak detection apparatus according to claim 6, characterized in that the detection well (3) comprises, in the direction of groundwater flow, an upstream detection well (31) and a downstream detection well (32);

the upstream detection well (31) is communicated with the communication pipeline (12) positioned at the upstream of the guide and discharge pipeline (11);

the downstream detection well (32) is communicated with the communication pipeline (12) which is positioned at the downstream of the guide and discharge pipeline (11).

8. Leak detection device according to claim 7, wherein a suction pump is arranged in each of the upstream detection well (31) and the downstream detection well (32).

9. Leak detection device according to claim 2, wherein the detector (2) is a pipe crawler;

10. The leak detection device according to any one of claims 1 to 9, further comprising a manipulator;

the manipulator is electrically connected with the detector (2) through a cable and is used for controlling the motion state of the detector (2) in the detection pipeline (1).