A verification device and method for testing and identifying drainage pipe defect performance

Abstract

The present invention provides a verification device for testing and identifying the performance of drainage pipe defects, including a water inlet tank, a test tank, and a water outlet tank. The water inlet tank is provided with a water inlet, and the water outlet tank is provided with a water outlet. The test tank is fixedly installed with a water inlet pipe, a test pipe, and a water outlet pipe. The water inlet pipe and the water outlet pipe are connected to the water inlet tank and the water outlet tank respectively. The test pipe includes a base, a fixed part, and a movable part. The base fixes the fixed part in the test tank. The fixed part and the movable part are assembled into a pipe. The fixed part and the movable part are both composed of an outer protective pipe, a middle filled with soil, and an inner woven protective net. The test pipe is used to simulate the structural defects and functional defects of the drainage pipe. The present invention also provides a verification method for testing and identifying the performance of drainage pipe defects, respectively performing test pipe structural defect simulation and functional defect simulation, simulating various pipeline defect types and levels, and conveniently and quickly verifying the accuracy of various detection methods.

Description

Technical Field

[0001] The present invention relates to the field of remote control technology, and in particular to a verification device and method for testing and identifying drainage pipe defect performance. Background Art

[0002] Due to deficiencies in the early planning, construction, and later operation and maintenance of drainage pipes, as well as objective factors such as groundwater infiltration and geological subsidence, the drainage pipe system has various problems such as mixed and wrong connections, ruptures, misaligned ports, leakage, and sedimentation, which seriously affect the centralized collection rate of domestic sewage, the concentration of pollutants in the sewage treatment plant inlet, and the surface water environment. Drainage pipes are generally buried deep underground, with small spaces and great difficulty in detection. At present, pipeline inspection is mainly completed by robots carrying optical, acoustic, electromagnetic and other sensing elements. Due to the complex situation in the drainage pipes and the limitations of various detection methods in technical principles, existing detection methods often have missed detections and wrong detections, and their detection results are difficult to verify. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a verification device and method for testing and identifying the performance of drainage pipe defects. In order to achieve the above-mentioned purpose, the following technical scheme is adopted.

[0004] According to a technical solution of the present invention, a verification device for testing and identifying the performance of drainage pipe defects comprises a water inlet trough, a test trough, and a water outlet trough which are arranged in series in sequence, the water inlet trough being provided with a water inlet, the water outlet trough being provided with a water outlet, a water pump with a water reservoir being connected between the water inlet and the water outlet to form a water flow loop among the water inlet trough, the test trough, and the water outlet trough, the test trough being fixedly installed with a water inlet pipe, a test pipe, and a water outlet pipe, the water inlet pipe and the water outlet pipe being connected to the water inlet trough and the water outlet trough respectively, the test pipe being fixedly installed between the water inlet pipe and the water outlet pipe, the test pipe comprising a base, a fixed part, and a movable part, the base fixing the fixed part in the test trough, the fixed part and the movable part forming a pipe, the fixed part and the movable part both being composed of an outer protective pipe, a middle filled with soil, and an inner woven protective net, and the test pipe being used to simulate structural defects and functional defects of drainage pipes.

[0005] Furthermore, the structural defects include rupture, deformation, concealed connection of branch pipes, penetration of foreign matter, leakage, and corrosion, which are simulated by a single test pipe.

[0006] Furthermore, the rupture and branch pipe concealed connection defects require drilling holes in the test pipe, and the leakage defects require filling the test tank with water.

[0007] Furthermore, the structural defects also include misalignment, undulation, disconnection, and interface material shedding, which are simulated by connecting multiple test tubes in series.

[0008] Furthermore, the functional defects include sediments, obstacles, scaling, residual walls, tree roots, and scum.

[0009] Furthermore, the water inlet is located at the upper end of the water inlet trough, and the water outlet is located at the bottom end of the water outlet trough.

[0010] Furthermore, the water inlet and the water outlet are respectively located on both sides of the central axis of the test tube.

[0011] Furthermore, both ends of the test tube are fixedly connected to the water inlet pipe and the water outlet pipe through flanges.

[0012] According to another technical solution of the present invention, a verification method for testing the performance of identifying drainage pipe defects, using the verification device as described above, comprises the following steps:

[0013] When a single test pipe is used for structural defect simulation, the movable part structure of the test pipe is set with corresponding defects according to rupture, deformation, branch pipe blind connection, foreign body penetration, leakage, and corrosion defects. The water pump is used to fill the water inlet tank with water to form a water flow loop, and the water level of the test pipe is adjusted. The pipeline defect detection module is carried on the robot platform or pulled by a rope to pass through the water inlet pipe, the test pipe, and the water outlet pipe in turn to obtain the simulation result G1;

[0014] When a single test pipe is used for functional defect simulation, sediments, obstacles, scaling, residual walls, tree roots, and scum are added to the test pipe to set corresponding defects. A water pump is used to fill the water inlet tank with water to form a water flow loop, and the water level of the test pipe is adjusted. The pipeline defect detection module is carried on a robot platform or pulled by a rope to pass through the water inlet pipe, the test pipe, and the water outlet pipe in sequence to obtain the simulation result G2;

[0015] When multiple test pipes are used for structural defect simulation, the structure of the test pipes is set with corresponding defects according to the misalignment, undulation, disconnection, and interface material shedding. The water pump is used to fill the water inlet tank with water to form a water flow loop, and the water level of the test pipe is adjusted. The pipeline defect detection module is carried on the robot platform or pulled by a rope to pass through the water inlet pipe, the test pipe, and the water outlet pipe in sequence to obtain the simulation result G3;

[0016] The actual detection results of the pipeline defect detection module are compared with the simulation results G1, G2, and G3 to complete the verification of the detection performance of the pipeline defect detection module.

[0017] Furthermore, when setting structural defects for the test tube, multiple groups of similar simulation results G1 and G3 are collected to form simulation result sets of G1 and G3 for comparison.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention can restore the actual buried scene of drainage pipes as much as possible under relatively controllable conditions, simulate various types and levels of pipe defects, and conveniently and quickly verify the accuracy of various detection methods;

[0020] 2. The present invention can provide real operation scenarios of drainage pipes under different water depths and certain flow rates, which is convenient for verifying the detection performance of various means under water conditions and determining the application boundaries. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0022] Figure 1 This is a schematic diagram of the planar structure of an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the AA cross-sectional structure of an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the BB cross-sectional structure of the embodiment of the present invention;

[0025] Figure 4 Schematic diagram of simulation of various pipeline structural defects according to an embodiment of the present invention;

[0026] Figure 5 Schematic diagram of simulation of functional defects of various pipelines according to an embodiment of the present invention.

[0027] In the above drawings: test pipe 1, water inlet pipe 2, water outlet pipe 3, outer protective pipe 11, middle filling soil 12, inner woven protective net 13, flange 14, test trough 4, water inlet trough 5, water outlet trough 6, water inlet 51, water outlet 61, base 7, rupture 21, deformation 22, concealed connection of branch pipe 23, penetration of foreign matter 24, leakage 25, misalignment 27, undulation 28, disconnection 29, falling of interface material 30, sediment 31, obstacle 32, scaling 33, residual wall 34, tree roots 35, scum 36. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0029] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 should fall within the scope of protection of the present invention.

[0030] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be another element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be another element centered thereon at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] Example 1

[0033] The embodiment of the present invention provides a verification device for testing and identifying the performance of drainage pipe defects, such as Figures 1 to 4 As shown, it includes a water inlet trough 5, a test trough 4, and a water outlet trough 6 which are arranged in series in sequence. The water inlet trough 5 is provided with a water inlet 51, and the water outlet trough 6 is provided with a water outlet 61. A water pump with a water reservoir is connected between the water inlet 51 and the water outlet 61 to form a water flow loop for the water inlet trough 5, the test trough 4, and the water outlet trough 6. The test trough 4 is fixedly installed with a water inlet pipe 2, a test pipe 1, and a water outlet pipe 3. The water inlet pipe 2 and the water outlet pipe 3 are connected with the water inlet trough 5 and the water outlet trough 6 respectively. The test pipe 1 is fixedly installed between the water inlet pipe 2 and the water outlet pipe 3. The test pipe 1 includes a base 7, a fixed part, and a movable part. The base 7 fixes the fixed part in the test trough 4. The fixed part and the movable part are assembled into a pipeline. The fixed part and the movable part are both composed of an outer protective tube 11, a middle filled soil 12, and an inner woven protective net 1. 3, the inner woven protective net 13 is a combination of a woven bag and a galvanized wire mesh, and the shape of the inner woven protective net 13 can be changed as needed to change the structure of the test pipe, which is used to simulate the situation that the pipeline is buried deep underground. A single test pipe 1 is used to simulate structural defects, and corresponding defects are set for the movable part structure of the test pipe 1 according to rupture 21, deformation 22, branch pipe concealed connection 23, foreign body penetration 24, leakage 25, and corrosion defects. A water pump is used to fill the water inlet tank 5 with water to form a water flow loop, and the water level of the test pipe 1 is adjusted. The pipeline defect detection module is carried on a robot platform or pulled by a rope through the water inlet pipe 2, the test pipe 1 and the water outlet pipe 3 in turn, and the simulation result G1 is obtained. The actual result of the pipeline defect detection module is compared to complete the verification of the detection performance of the pipeline defect detection module.

[0034] In this embodiment, the test trough 4, the water inlet trough 5 and the water outlet trough 6 are all composed of brick-concrete pool walls and concrete pool bottoms, which restore the actual situation of the drainage pipe buried underground as much as possible, and the water inlet pipe 2 and the water outlet pipe 3 are fixed in the brick-concrete pool wall.

[0035] When simulating the defects of rupture 21 and branch pipe concealed connection 23, it is necessary to open a hole in the test pipe 1. When simulating the defect of leakage 25, it is necessary to fill the test tank 4 with water.

[0036] like Figures 1 to 3 As shown, the water inlet 51 is located at the upper end of the water inlet trough 5, so that the water inlet trough 5 has a certain ballast effect to prevent the water flow pumped in by the water pump from being too fast and fluctuating too much; the water outlet 61 is located at the bottom end of the water outlet trough 6, so that the water outlet trough 6 can avoid water gushing into the device due to insufficient drainage capacity of the external pipe of the device.

[0037] like Figure 1 As shown, the water inlet 51 and the water outlet 61 are respectively located on both sides of the central axis of the test pipe 1. This is convenient for making the test pipe have a relatively stable water flow state, which is used to restore the actual situation of the drainage pipe buried underground as much as possible.

[0038] like Figure 1 , Figure 2 As shown, the two ends of the test tube 1 are fixedly connected to the water inlet pipe 2 and the water outlet pipe 3 through flanges 14. This facilitates the fixing of the test tube 1 and makes it more convenient to use.

[0039] The present invention can restore the actual buried drainage pipe situation as much as possible under relatively controllable conditions, simulate various pipe defect types and levels, and conveniently and quickly verify the accuracy of various detection methods.

[0040] The present invention can provide real operation scenarios of drainage pipes under different water depths and certain flow rates, facilitate verification of the detection performance of various means under water conditions, and determine the application boundaries.

[0041] Example 2

[0042] The embodiment of the present invention provides a verification device for testing and identifying the performance of drainage pipe defects, such as Figures 1 to 5As shown, it includes a water inlet trough 5, a test trough 4, and a water outlet trough 6 which are arranged in series in sequence. The water inlet trough 5 is provided with a water inlet 51, and the water outlet trough 6 is provided with a water outlet 61. A water pump with a water reservoir is connected between the water inlet 51 and the water outlet 61 to form a water flow loop for the water inlet trough 5, the test trough 4, and the water outlet trough 6. The test trough 4 is fixedly installed with a water inlet pipe 2, a test pipe 1, and a water outlet pipe 3. The water inlet pipe 2 and the water outlet pipe 3 are connected with the water inlet trough 5 and the water outlet trough 6 respectively. The test pipe 1 is fixedly installed between the water inlet pipe 2 and the water outlet pipe 3. The test pipe 1 includes a base 7, a fixed part, and a movable part. The base 7 fixes the fixed part in the test trough 4. The fixed part and the movable part are assembled into a pipeline. The fixed part and the movable part are both composed of an outer protective tube 11, a middle filled soil 12, and an inner braided The test tube is composed of a protective net 13, and the inner woven protective net 13 is a combination of a woven bag and a galvanized wire mesh. The shape of the inner woven protective net 13 can be changed as needed to change the structure of the test tube, which is used to simulate the scenario of a pipeline buried deep underground. A single test tube 1 is used to simulate structural defects, and sediments 31, obstacles 32, scaling 33, residual walls 34, tree roots 35, and scum 36 are added to the test tube 1 to set corresponding defects. The water pump injects water into the water inlet trough 5 to form a water flow loop, and the water level of the test tube 1 is adjusted. The pipeline defect detection module is carried on a robot platform or pulled by a rope through the water inlet pipe 2, the test tube 1 and the water outlet pipe 3 in turn, and the simulation result G2 is compared with the actual result of the pipeline defect detection module to complete the verification of the detection performance of the pipeline defect detection module.

[0043] In this embodiment, the test trough 4, the water inlet trough 5 and the water outlet trough 6 are all composed of brick-concrete pool walls and concrete pool bottoms, which restore the actual situation of the drainage pipe buried underground as much as possible, and the water inlet pipe 2 and the water outlet pipe 3 are fixed in the brick-concrete pool wall.

[0044] When simulating the defects of rupture 21 and branch pipe concealed connection 23, it is necessary to open a hole in the test pipe 1. When simulating the defect of leakage 25, it is necessary to fill the test tank 4 with water.

[0045] like Figures 1 to 3 As shown, the water inlet 51 is located at the upper end of the water inlet trough 5, so that the water inlet trough 5 has a certain ballast effect to prevent the water flow pumped in by the water pump from being too fast and fluctuating too much; the water outlet 61 is located at the bottom end of the water outlet trough 6, so that the water outlet trough 6 can avoid water gushing into the device due to insufficient drainage capacity of the external pipe of the device.

[0046] like Figure 1 As shown, the water inlet 51 and the water outlet 61 are respectively located on both sides of the central axis of the test pipe 1. This is convenient for making the test pipe have a relatively stable water flow state, which is used to restore the actual situation of the drainage pipe buried underground as much as possible.

[0047] like Figure 1 , Figure 2 As shown, the two ends of the test tube 1 are fixedly connected to the water inlet pipe 2 and the water outlet pipe 3 through flanges 14. This facilitates the fixing of the test tube 1 and makes it more convenient to use.

[0048] The present invention can restore the actual buried drainage pipe situation as much as possible under relatively controllable conditions, simulate various pipe defect types and levels, and conveniently and quickly verify the accuracy of various detection methods.

[0049] The present invention can provide real operation scenarios of drainage pipes under different water depths and certain flow rates, facilitate verification of the detection performance of various means under water conditions, and determine the application boundaries.

[0050] Example 3

[0051] The embodiment of the present invention provides a verification device for testing and identifying the performance of drainage pipe defects, such as Figures 1 to 4 As shown, it includes a water inlet trough 5, a test trough 4, and a water outlet trough 6 which are arranged in series in sequence. The water inlet trough 5 is provided with a water inlet 51, and the water outlet trough 6 is provided with a water outlet 61. A water pump with a water reservoir is connected between the water inlet 51 and the water outlet 61 to form a water flow loop for the water inlet trough 5, the test trough 4, and the water outlet trough 6. The test trough 4 is fixedly installed with a water inlet pipe 2, a test pipe 1, and a water outlet pipe 3. The water inlet pipe 2 and the water outlet pipe 3 are connected with the water inlet trough 5 and the water outlet trough 6 respectively. The test pipe 1 is fixedly installed between the water inlet pipe 2 and the water outlet pipe 3. The test pipe 1 includes a base 7, a fixed part, and a movable part. The base 7 fixes the fixed part in the test trough 4. The fixed part and the movable part are assembled into a pipeline. The fixed part and the movable part are both composed of an outer protective tube 11, a middle filled soil 12, and an inner The test tube 1 is composed of a layer of woven protective net 13, and the inner layer of woven protective net 13 is a combination of a woven bag and a galvanized wire mesh. The shape of the inner layer of woven protective net 13 can be changed as needed to change the structure of the test tube. It is used to simulate the scenario of a pipeline buried deep underground. Multiple test tubes 1 are used to simulate structural defects. The structure of the test tube 1 is set with corresponding defects according to the misalignment 27, undulation 28, disconnection 29, and interface material shedding 30. A water pump is used to inject water into the water inlet trough 5 to form a water flow loop, and the water level of the test tube 1 is adjusted. The pipeline defect detection module is carried on a robot platform or pulled by a rope to pass through the water inlet pipe 2, the test tube 1 and the water outlet pipe 3 in turn, and the simulation result G3 is obtained. The actual result of the pipeline defect detection module is compared to complete the verification of the detection performance of the pipeline defect detection module.

[0052] In this embodiment, the test trough 4, the water inlet trough 5 and the water outlet trough 6 are all composed of brick-concrete pool walls and concrete pool bottoms, which restore the actual situation of the drainage pipe buried underground as much as possible, and the water inlet pipe 2 and the water outlet pipe 3 are fixed in the brick-concrete pool wall.

[0053] When simulating the defects of rupture 21 and branch pipe concealed connection 23, it is necessary to open a hole in the test pipe 1. When simulating the defect of leakage 25, it is necessary to fill the test tank 4 with water.

[0054] like Figures 1 to 3 As shown, the water inlet 51 is located at the upper end of the water inlet trough 5, so that the water inlet trough 5 has a certain ballast effect to prevent the water flow pumped in by the water pump from being too fast and fluctuating too much; the water outlet 61 is located at the bottom end of the water outlet trough 6, so that the water outlet trough 6 can avoid water gushing into the device due to insufficient drainage capacity of the external pipe of the device.

[0055] like Figure 1 As shown, the water inlet 51 and the water outlet 61 are respectively located on both sides of the central axis of the test pipe 1. This is convenient for making the test pipe have a relatively stable water flow state, which is used to restore the actual situation of the drainage pipe buried underground as much as possible.

[0056] like Figure 1 , Figure 2 As shown, the two ends of the test tube 1 are fixedly connected to the water inlet pipe 2 and the water outlet pipe 3 through flanges 14. This facilitates the fixing of the test tube 1 and makes it more convenient to use.

[0057] The present invention can restore the actual buried drainage pipe situation as much as possible under relatively controllable conditions, simulate various pipe defect types and levels, and conveniently and quickly verify the accuracy of various detection methods.

[0058] The present invention can provide real operation scenarios of drainage pipes under different water depths and certain flow rates, facilitate verification of the detection performance of various means under water conditions, and determine the application boundaries.

[0059] According to another technical solution of the present invention, a verification method for testing the performance of identifying drainage pipe defects is provided. Figure 4 , Figure 5 As shown, using the verification device as described above, includes the following steps:

[0060] When a single test tube 1 is used for structural defect simulation, corresponding defects are set for the active part structure of the test tube 1 according to rupture 21, deformation 22, branch pipe concealed connection 23, foreign body penetration 24, leakage 25, and corrosion defects. The water pump is used to inject water into the water inlet tank 5 to form a water flow loop, and the water level of the test tube 1 is adjusted. The pipeline defect detection module is carried on a robot platform or pulled by a rope to pass through the water inlet pipe 2, the test tube 1 and the water outlet pipe 3 in sequence to obtain a simulation result G1;

[0061] When a single test pipe 1 is used for functional defect simulation, sediment 31, obstacle 32, scaling 33, residual wall 34, tree root 35, and scum 36 are added to the test pipe 1 to set corresponding defects, and water is pumped into the water inlet tank 5 to form a water flow loop, and the water level of the test pipe 1 is adjusted. The pipeline defect detection module is carried on a robot platform or pulled by a rope to pass through the water inlet pipe 2, the test pipe 1, and the water outlet pipe 3 in sequence to obtain a simulation result G2;

[0062] When multiple test tubes 1 are used to simulate structural defects, the structure of the test tube 1 is set with corresponding defects according to the misalignment 27, undulation 28, disconnection 29, and interface material shedding 30. The water pump is used to inject water into the water inlet tank 5 to form a water flow loop, and the water level of the test tube 1 is adjusted. The pipeline defect detection module is carried on a robot platform or pulled by a rope to pass through the water inlet pipe 2, the test tube 1, and the water outlet pipe 3 in sequence to obtain the simulation result G3;

[0063] The actual detection results of the pipeline defect detection module are compared with the simulation results G1, G2, and G3 to complete the verification of the detection performance of the pipeline defect detection module.

[0064] like Figure 4 As shown, schematic diagrams of simulations of various types of pipeline defects are given to simulate underground drainage pipeline defects.

[0065] In order to improve the accuracy of the comparison result, when the structural defect is set for the test tube 1, multiple groups of similar simulation results G1 and G3 are collected to form a simulation result set of G1 and G3 for comparison.

[0066] The present invention can restore the actual buried drainage pipe situation as much as possible under relatively controllable conditions, simulate various pipe defect types and levels, and conveniently and quickly verify the accuracy of various detection methods.

[0067] The present invention can provide real operation scenarios of drainage pipes under different water depths and certain flow rates, facilitate verification of the detection performance of various means under water conditions, and determine the application boundaries.

[0068] Any numerical value cited herein includes all values ​​of lower and upper values ​​that increase by one unit from the lower limit to the upper limit, and there is at least a two-unit interval between any lower value and any higher value. For example, if the value of the quantity of a component or a process variable (such as temperature, pressure, time, etc.) is set forth to be from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, the purpose is to illustrate that values ​​such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also explicitly listed in the specification. For values ​​less than 1, one unit is appropriately considered to be 0.0001, 0.001, 0.01, 0.1. These are merely examples that are intended to be clearly expressed, and it can be considered that all possible combinations of numerical values ​​listed between the lowest value and the highest value are clearly set forth in the specification in a similar manner.

[0069] Unless otherwise specified, all ranges include the endpoints and all numbers between the endpoints. "About" or "approximately" used with a range applies to both endpoints of the range. Thus, "about 20 to 30" is intended to cover "about 20 to about 30", including at least the specified endpoints.

[0070] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for all purposes. The term "consisting essentially of..." to describe a combination should include the identified elements, ingredients, parts or steps and other elements, ingredients, parts or steps that do not substantially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe a combination of elements, ingredients, parts or steps herein also contemplates embodiments that consist essentially of these elements, ingredients, parts or steps. By using the term "may", it is intended to indicate that any attribute described that "may" include is optional.

[0071] Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The disclosure "one" or "an" used to describe an element, ingredient, part or step is not intended to exclude other elements, ingredients, parts or steps.

[0072] It should be understood that the above description is for illustration and not for limitation. Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art by reading the above description.

[0073] Therefore, the scope of the present teachings should not be determined with reference to the above description, but should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. For the purpose of comprehensiveness, all articles and references, including the disclosures of patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to be a disclaimer of such subject matter, nor should it be considered that the inventors did not consider such subject matter to be part of the disclosed inventive subject matter.

[0074] In addition, although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A verification device for testing and identifying drainage pipe defect performance, characterized in that: It includes a water inlet tank, a test tank, and a water outlet tank which are arranged in series in sequence. The water inlet tank is provided with a water inlet, and the water outlet tank is provided with a water outlet. A water pump with a water reservoir is connected between the water inlet and the water outlet to form a water flow loop among the water inlet tank, the test tank, and the water outlet tank. A water inlet pipe, a test pipe, and a water outlet pipe are fixedly installed on the test tank. The water inlet pipe and the water outlet pipe are connected with the water inlet tank and the water outlet tank respectively. The test pipe is fixedly installed between the water inlet pipe and the water outlet pipe. The test pipe includes a base, a fixed part, and a movable part. The base fixes the fixed part in the test trough, and the fixed part and the movable part are assembled into a pipe. The fixed part and the movable part are both composed of an outer protective pipe, a middle part filled with soil and an inner woven protective net. The inner woven protective net is a combination of a woven bag and a galvanized wire mesh. The test pipe is used to simulate the structural defects and functional defects of the drainage pipe. The water inlet is located at the upper end of the water inlet trough, and the water outlet is located at the bottom end of the water outlet trough. The water inlet and the water outlet are respectively located on both sides of the central axis of the test pipe.

2. A verification device for testing and identifying drainage pipe defect performance according to claim 1, characterized in that: The structural defects include rupture, deformation, concealed connection of branch pipes, penetration of foreign matter, leakage, and corrosion, which are simulated by a single test pipe.

3. A verification device for testing and identifying drainage pipe defect performance according to claim 2, characterized in that: The rupture and branch pipe concealed connection defects require drilling a hole in the test pipe, and the leakage defects require filling the test tank with water.

4. A verification device for testing and identifying drainage pipe defect performance according to claim 1, characterized in that: The structural defects also include misalignment, undulation, disconnection, and interface material shedding, which are simulated by connecting multiple test tubes in series.

5. A verification device for testing and identifying drainage pipe defect performance according to claim 1, characterized in that: The functional defects include sediments, obstructions, scaling, residual walls, tree roots, and scum.

6. A verification device for testing and identifying drainage pipe defect performance according to claim 1, characterized in that: The two ends of the test tube are fixedly connected to the water inlet pipe and the water outlet pipe through flanges.

7. A verification method for testing and identifying drainage pipe defect performance, characterized in that: Using the verification device as described in any one of claims 1 to 6, simulating the defects of the drainage pipe comprises the following steps: When a single test pipe is used for structural defect simulation, the movable part structure of the test pipe is set with corresponding defects according to rupture, deformation, branch pipe blind connection, foreign body penetration, leakage, and corrosion defects. The water pump is used to fill the water inlet tank with water to form a water flow loop, and the water level of the test pipe is adjusted. The pipeline defect detection module is carried on the robot platform or pulled by a rope to pass through the water inlet pipe, the test pipe, and the water outlet pipe in turn to obtain the simulation result G1; When a single test pipe is used for functional defect simulation, sediments, obstacles, scaling, residual walls, tree roots, and scum are added to the test pipe to set corresponding defects. A water pump is used to fill the water inlet tank with water to form a water flow loop, and the water level of the test pipe is adjusted. The pipeline defect detection module is carried on a robot platform or pulled by a rope to pass through the water inlet pipe, the test pipe, and the water outlet pipe in sequence to obtain the simulation result G2; When multiple test pipes are used for structural defect simulation, the structure of the test pipes is set with corresponding defects according to the misalignment, undulation, disconnection, and interface material shedding. The water pump is used to fill the water inlet tank with water to form a water flow loop, and the water level of the test pipe is adjusted. The pipeline defect detection module is carried on the robot platform or pulled by a rope to pass through the water inlet pipe, the test pipe, and the water outlet pipe in sequence to obtain the simulation result G3; Compare the actual results of the pipeline defect detection module with the simulation results G1, G2, and G3 to complete the verification of the detection performance of the pipeline defect detection module; When setting structural defects for the test tube, multiple groups of similar simulation results G1 and G3 are collected to form simulation result sets of G1 and G3 for comparison.

Images