A self-driven water pipe leakage detection instrument and detection method

Abstract

The present invention belongs to the technical field of pipeline detection equipment, specifically a self-driven water pipeline leakage detection instrument and detection method. The present invention carries out water supply pipeline leakage detection work to ensure the safe, stable and healthy operation of the water supply pipeline, including a crawling structure, which is a self-driving structure that can walk by itself; a camera device, which is used to shoot the inside of the pipeline; a pipeline leakage measuring instrument, which is used to detect whether the pipeline is leaking; an electronic warehouse, which has a circuit board and a power module installed in it, and the electronic warehouse supplies power to the crawling structure, the camera device and the pipeline leakage measuring instrument; the crawling structure is set at the front end, and the camera device, the pipeline leakage measuring instrument and the electronic warehouse are connected to each other and connected to the tail of the crawling structure. The present invention is used to detect pipeline leakage points and find the leakage point location. It can detect the pipeline condition under pressure in the pipeline. During the detection process, it will not affect the normal water supply and will not cause inconvenience to urban water use.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline detection equipment, and in particular relates to a self-driven tap water pipeline leakage detection instrument and a detection method. Background Art

[0002] Water supply pipes are an important part of the urban water supply system. They are generally made of iron, steel, cement, fiberglass and other materials. However, water supply pipes are buried underground for a long time. If these materials are not properly maintained during long-term use, they will gradually be damaged due to aging, corrosion, wear, expansion and other reasons. When the pipe is damaged, the soil around the pipe will loosen, and the contact area between the pipe and the surrounding soil will decrease, resulting in a decrease in the surrounding soil pressure, and then the pipe will rupture and leak. If the leaking pipe is not discovered and repaired in time, precious water resources will be wasted in vain, and the roads, building facilities and devices near the leakage point will be endangered. In severe cases, it will also cause water pollution, major economic losses and adverse social impacts. Therefore, it is of practical and far-reaching significance to carry out water supply pipe leakage detection to ensure the safe, stable and healthy operation of the water supply pipe.

[0003] Commonly used detection methods have certain limitations, such as: traditional handheld listening stick technology - detect the sound of water leakage at the exposed point of the pipeline. Its effect is affected by background noise, pressure in the pipeline and the experience of the leak detector. The pipeline is buried deep and the leak point cannot be detected. Electronic amplified audiometer (pipeline leak detector) - compares the sound intensity along the suspected leaking pipeline in certain steps, but it is difficult to use effectively in noisy environments and busy urban environments, and is also affected by soil properties. Correlation instrument analysis method - uses the delay of the leak sound to determine the location of the leak point, which is relatively accurate, but often has poor results for non-metallic pipelines. At the same time, positioning errors may occur due to errors in the topological structure of the pipeline network, the existence of branch pipes, and the calculation of sound speed. Tracer gas detection method - finds leaks by detecting the concentration changes of tracer gas along the pipeline. It has high sensitivity, but the use conditions are harsh and the water flow direction must be known. The existence of branch pipes will cause gas leakage and detection failure. Ground radar leak detection method - uses electromagnetic principles to detect underground pipelines, and locates pipeline leaks by emitting electromagnetic cracks for reverse acquisition. It is suitable for large-diameter or non-metallic pipeline detection. However, it is difficult to accurately determine the initial leak point, image analysis is difficult, and data processing is slow. Instantaneous flow detection method - locates the leak point by identifying the pipeline pressure signal, artificially generates an instantaneous flow change process, and compares the calculated instantaneous pressure change process with the actual pressure change under different leak point locations and leak area conditions. There is also noise interference, resulting in errors in the inverse problem analysis results and low model reliability. Summary of the invention

[0004] The present invention provides a self-driven water supply pipeline leakage detection instrument and a detection method in order to carry out water supply pipeline leakage detection work and ensure the safe, stable and healthy operation of the water supply pipeline.

[0005] The present invention adopts the following technical scheme: a self-driven water pipe leakage detection instrument, comprising:

[0006] A crawling structure, wherein the crawling structure is a self-propelled structure that can walk on its own;

[0007] A camera device, wherein the camera device is used to photograph the interior of the pipeline;

[0008] A pipeline leakage measuring instrument, which is used to detect whether a pipeline is leaking;

[0009] An electronic compartment, wherein a control panel is installed in the electronic compartment, and the electronic compartment supplies power to the crawling structure, the camera device, and the pipeline leakage measuring instrument;

[0010] The crawling structure is arranged at the front end, and the camera device, the pipeline leakage measuring instrument and the electronic compartment are connected to each other and to the rear end of the crawling structure.

[0011] In some embodiments, the crawling structure comprises:

[0012] A motor compartment body, wherein a driving motor is arranged in the motor compartment body;

[0013] A front driven wheel assembly, wherein the front driven wheel assembly is mounted at the front end of the motor compartment body;

[0014] A rear driven wheel assembly, wherein the rear driven wheel assembly is mounted at the rear end of the motor compartment body;

[0015] A toothed chain, wherein two toothed chains are provided, respectively located on the left and right sides of the motor compartment body, and the two toothed chains are connected between the front driven wheel assembly and the rear driven wheel assembly;

[0016] A gear set bracket assembly, wherein the gear set bracket assembly is driven by a driving motor, and the gear set bracket assembly drives a toothed chain;

[0017] A sealed camera assembly is installed at the front end of the motor compartment body and is used for the crawling structure to observe the road conditions in the water pipe during the forward movement.

[0018] In some embodiments, the gear set bracket assembly includes:

[0019] Two gear brackets, the two gear brackets are symmetrically fixed outside the motor compartment, and a baffle is installed between the tops of the two gear brackets;

[0020] Two shafts, the two shafts are installed between two gear brackets through flange bearings;

[0021] Two sets of left and right bevel gears I and gears are installed on one of the shafts, and the bevel gear I is meshed with the bevel gear II set on the output shaft of the driving motor;

[0022] Two left and right sets of spur gears and sprockets are installed on the other shaft. The spur gears are meshed with the gears, and the left and right sprockets respectively drive the toothed chains on the left and right sides to rotate.

[0023] In some embodiments, a dynamic seal assembly is provided on the output shaft of the drive motor for sealing, and the dynamic seal assembly includes:

[0024] A bearing cover, the bearing cover is covered on the driving motor, and a sealing ring I is provided on the bearing cover;

[0025] A clamping cover, wherein the clamping cover is arranged on the bearing cover;

[0026] The output shaft of the driving motor passes through the bearing cover to connect with the conversion shaft I, the conversion shaft I is installed on the bearing, and the conversion shaft I passes through the clamping cover to connect with the bevel gear II;

[0027] A flood seal is arranged between the conversion shaft I and the pressing cover, and the flood seal is pressed by the flood seal stopper.

[0028] In some embodiments, the camera device includes:

[0029] A cabin body, wherein a motor is arranged in the cabin body, and a groove is opened in the middle of the cabin body;

[0030] A camera assembly is installed in a groove in the middle of the cabin body and is used to observe the inner wall of the water pipe and the movement and posture of other instruments;

[0031] The motor drives the camera assembly to lift and lower the camera assembly through the gear assembly.

[0032] In some embodiments, the pipeline leakage measuring instrument comprises:

[0033] A measurement subject, the measurement subject comprising:

[0034] sensor;

[0035] A sensor protection cover, which is sleeved on the outside of the sensor;

[0036] A buoyancy device, wherein the buoyancy device is integrally connected to the sensor protection cover;

[0037] The sealing structure is arranged at two ends of the measuring body and is used to seal the two ends of the sensor protection cover.

[0038] In some embodiments, the electronic warehouse includes:

[0039] Electronic compartment housing;

[0040] A control panel, the control panel being arranged in the electronic compartment housing;

[0041] A front end plugging head, which is installed at the front end of the electronic compartment housing;

[0042] A Y-shaped sealing ring, which is installed at the rear end of the electronic compartment housing;

[0043] An optical cable, one end of which is connected to the control board, and the other end of which passes through a Y-shaped sealing ring to connect to an external power supply.

[0044] A detection method, using the self-driven water pipe leakage detection instrument, comprises the following steps:

[0045] S100: Clean up the site environment and set up a safe working area;

[0046] S200: placing the self-driven water pipe leakage detection instrument into the pipe to be detected and orienting it;

[0047] S300: The self-driven water pipe leakage detection instrument moves along the pipe to be detected and performs leakage detection;

[0048] S400: After the leakage detection is completed, the self-driven water pipe leakage detection instrument is retracted.

[0049] In some embodiments, step S200 includes:

[0050] S201: Open the inlet manhole cover of the pipeline to be inspected, and install a fixing cylinder on the inlet;

[0051] S202: installing a lowering cylinder that can move up and down along the fixed cylinder in the fixed cylinder, and placing the self-driven water pipe leakage detection instrument in the lowering cylinder;

[0052] S203: The lowering tube is driven to a designated position in the pipeline to be inspected, that is, the front end of the lowering tube extends into 1 / 3 of the length of the pipeline to be inspected;

[0053] S204: lower the self-driven water pipe leakage detection instrument, and with the assistance of the camera device, complete the orientation of the self-driven water pipe leakage detection instrument, and then start crawling, stop crawling after releasing a certain length, and enter the initial measurement state.

[0054] In some embodiments, step S300 includes:

[0055] S301: Starting position measurement, GPS positioning, and the operator in the vehicle records as required;

[0056] S302: the self-driven water pipe leakage detection instrument starts crawling, starts recording images and sound wave data, and stops crawling after crawling for 10 meters, stops recording sound wave data, and performs positioning;

[0057] S303: Repeat step S302 every 10 meters of crawling, and if any abnormality is found, perform positioning and fixed-point measurement;

[0058] S304: After the measurement is completed, the crawling is stopped, the camera device is turned to rear view, data recording is stopped, the screen display is only used for monitoring, and the self-driven water pipe leakage detection instrument is recovered.

[0059] Compared with the prior art, the present invention has the following beneficial effects:

[0060] The present invention proposes a self-driven water pipe leakage detection instrument, which is composed of a crawling structure, a camera device, a pipeline leakage measuring instrument, and an electronic compartment. The present invention is used to detect pipeline leaks and find the location of the leaks. It can detect the pipeline conditions under pressure in the pipeline. During the detection process, it will not affect the normal water supply and will not cause inconvenience to urban water use. During the test process, the present invention is at the bottom of the pipe with a stable posture, and the camera device can clearly observe the conditions of the inner wall of the pipe. Because the crawling structure of the present invention is self-driven and can resist the resistance caused by the reverse water flow, the present invention can perform detection at both ends of a test pipe mouth to improve the detection efficiency.

[0061] The present invention provides a self-driven water pipe leakage detection instrument, which can realize the detection instrument with its own power and can be dragged forward in the pipe; the present invention is equipped with a camera device, which can observe the conditions in the pipe and the corrosion of the pipe wall in all directions; the present invention measures the leakage point, determines the leakage degree, accurately measures the location of the fault point, and obtains the direction of the pipe through GPS positioning. The effective water leakage detection of the present invention can not only reduce the waste of water resources, but also reduce the maintenance cost of the water supply system, improve the water supply efficiency, and provide a strong guarantee for the safe and stable operation of the water supply system. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 It is a schematic diagram of the structure of the present invention;

[0063] Figure 2 This is a schematic diagram of the crawling structure;

[0064] Figure 3 It is a schematic diagram of the structure of the gear set bracket assembly;

[0065] Figure 4 It is a schematic diagram of the structure of the dynamic seal assembly;

[0066] Figure 5 This is a schematic diagram of the sealed camera assembly structure;

[0067] Figure 6 It is a schematic diagram of the structure of an LED lamp assembly;

[0068] Figure 7 It is a schematic diagram of the structure of a camera device;

[0069] Figure 8 It is a schematic diagram of the camera assembly structure;

[0070] Fig. 9 is a schematic diagram of the gear assembly structure;

[0071] Fig.10 This is a schematic diagram of the structure of a pipeline leakage measuring instrument;

[0072] Fig.11 This is a schematic diagram of the electronic warehouse structure;

[0073] Fig.12 It is a schematic diagram of the structure of a Y-type sealing ring;

[0074] In the figure, 1-crawling structure, 2-camera device, 3-pipeline leakage measuring instrument, 4-electronic compartment, 1.1-motor compartment body, 1.2-front driven wheel assembly, 1.3-rear driven wheel assembly, 1.4-toothed chain, 1.5-gear set bracket assembly, 1.6-dynamic seal assembly, 1.7-sealed camera assembly, 1.8-LED lamp assembly, 1.51-rib bearing, 1.52-gear bracket, 1.53-bevel gear I, 1.54-blocking piece, 1.55-spur gear, 1.56-sprocket, 1.57-shaft, 1.58-gear, 1.61-tightening cover, 1.62-pan seal, 1. 63-pan seal, 1.64-seal ring I, 1.65-drive motor, 1.66-bearing, 1.67-conversion shaft I, 1.68-bevel gear II, 1.69-bearing cover, 1.71-seal ring clamping cover, 1.72-seal ring II, 1.73-seal ring III, 1.74-camera fixing, 1.75-seal ring IV, 1.76-camera, 1.77-glass sheet I, 1.81-front end housing, 1.82-LED lamp clamping cover, 1.83-glass sheet II, 1.84-LED lamp I, 2.1-cabin, 2.2-camera assembly, 2.3- Motor, 2.4-gear assembly, 2.5-protective cover I, 2.6-sealing plug I, 2.7-sealing ring V, 2.21-camera upper end cover, 2.22-sealing ring VI, 2.23-glass cover, 2.24-camera and fixing seat, 2.25-rotating disc, 2.26-LED light II, 2.27-camera lower end cover, 2.28-motor and motor base, 2.41-gear set bracket, 2.42-conversion shaft II, 2.43-bevel gear III, 2.44-first rotating shaft, 2.45-L-type wire tube, 2.46-first gear, 2.47-second rotating shaft, 2.48-second gear, 2.451-base, 2.452-threaded connection end, 3.1-protective cover II, 3.2-sealing plug II, 3.3-sensor protection cover, 3.4-sensor, 3.5-hollow space, 3.6-buoyancy device, 4.1-front end sealing head, 4.2-electronic compartment shell, 4.3-pressure cover, 4.4-small pressure block, 4.5-front end protective cover, 4.6-control board, 4.7-fixing plate, 4.8-Y-type sealing ring, 4.9-pressure cap, 4.10-optical cable, 4.81-connection end, 4.82-support leg end, 4.811-trough body, 4.821-through hole. DETAILED DESCRIPTION

[0075] In order to make the purpose, 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. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0076] like Figure 1 As shown, a self-driven water pipe leakage detection instrument comprises:

[0077] A crawling structure 1, wherein the crawling structure 1 is a self-propelled structure capable of self-propelled movement;

[0078] A camera device 2, wherein the camera device 2 is used to photograph the interior of the pipeline;

[0079] A pipeline leakage measuring instrument 3, the pipeline leakage measuring instrument 3 is used to detect whether a pipeline leaks;

[0080] An electronic warehouse 4, wherein a control panel 4.6 is installed inside the electronic warehouse 4, and the electronic warehouse 4 supplies power to the crawling structure, the camera device and the pipeline leakage measuring instrument;

[0081] The crawling structure 1 is arranged at the front end, and the camera device 2, the pipeline leakage measuring instrument 3 and the electronic compartment 4 are connected to each other and connected to the rear end of the crawling structure.

[0082] like Figure 2 As shown, the crawling structure 1 includes:

[0083] A motor housing 1.1, wherein a driving motor 1.65 is arranged in the motor housing 1.1;

[0084] A front driven wheel assembly 1.2, wherein the front driven sprocket assembly 1.2 is mounted at the front end of the motor housing 1.1;

[0085] A rear driven wheel assembly 1.3, wherein the rear driven wheel assembly 1.3 is mounted at the rear end of the motor housing 1.1;

[0086] A toothed chain 1.4, wherein two toothed chains 1.4 are provided, and are respectively located on the left and right sides of the motor compartment body 1.1, and the two toothed chains 1.4 are connected between the front driven wheel assembly 1.2 and the rear driven wheel assembly 1.3;

[0087] A gear train support assembly 1.5, wherein the gear train support assembly 1.5 is driven by a driving motor 1.65, and the gear train support assembly 1.5 drives a toothed chain 1.4;

[0088] A sealed camera assembly 1.7 is installed at the front end of the motor compartment body 1.1 and is used for the crawling structure 1 to observe the road conditions in the water pipe during the forward movement.

[0089] like Figure 3 As shown, the gear set bracket assembly 1.5 includes:

[0090] Two gear brackets 1.52, the two gear brackets 1.52 are symmetrically fixed outside the motor compartment body 1.1, and a baffle 1.54 is installed between the tops of the two gear brackets 1.52;

[0091] Two shafts 1.57, the two shafts 1.57 are mounted between two gear brackets 1.52 via flange bearings 1.51;

[0092] Two sets of left and right bevel gears I1.53 and gear 1.58 are mounted on one of the shafts 1.57, and the bevel gear I1.53 is meshed with a bevel gear II1.68 disposed on the output shaft of the drive motor 1.65;

[0093] Two left and right sets of spur gears 1.55 and sprockets 1.56 are mounted on the other shaft 1.57. The spur gears 1.55 mesh with the gears 1.58. The left and right sprockets 1.56 respectively drive the toothed chains 1.4 on the left and right sides to rotate.

[0094] like Figure 4 As shown, a dynamic seal assembly 1.6 is provided on the output shaft of the driving motor 1.65 for sealing, and the dynamic seal assembly 1.6 includes:

[0095] A bearing cover 1.69, the bearing cover 1.69 covers the drive motor 1.65, and a sealing ring 11.64 is provided on the bearing cover 1.69;

[0096] A clamping cover 1.61, wherein the clamping cover 1.61 is arranged on the bearing cover 1.69;

[0097] The output shaft of the driving motor 1.65 passes through the bearing cover 1.69 to connect with the conversion shaft I1.67, the conversion shaft I1.67 is mounted on the bearing 1.66, and the conversion shaft I1.67 passes through the clamping cover 1.61 to connect with the bevel gear II1.68;

[0098] A flood seal 1.62 is provided between the conversion shaft 11.67 and the compression cover 1.61, and the flood seal 1.62 is compressed by the flood seal stopper 1.63.

[0099] like Figure 5 As shown, a sealed camera assembly 1.7 is installed at the front end of the motor compartment body 1.1 for observing the road conditions in the water pipe during the forward movement of the crawling section.

[0100] Sealed Camera Assembly 1.7 includes:

[0101] Camera 1.76;

[0102] A camera fixing member 1.74, wherein the camera fixing member 1.74 is sleeved on the front end of the camera 1.76, and a sealing ring IV1.75 is sleeved on the outer side of the camera fixing member 1.74;

[0103] A sealing ring pressing cover 1.71 is provided with a glass sheet I1.77, the sealing ring pressing cover 1.71 is installed at the front end of a camera fixing member 1.74, and a sealing ring II1.72 and a sealing ring III1.73 are provided between the sealing ring pressing cover 1.71 and the camera fixing member 1.74.

[0104] An LED light assembly 1.8 is arranged between the motor compartment body 1.1 and the sealed camera assembly 1.7.

[0105] like Figure 6 As shown, the LED lamp assembly 1.8 includes a front housing 1.81;

[0106] A camera mounting hole is provided in the middle of the front end housing 1.81 for mounting a sealed camera assembly 1.7;

[0107] The front end housing 1.81 is provided with an LED lamp I1.84, and the outer side of the LED lamp I1.84 is sealed by pressing a glass sheet II1.83 with an LED lamp pressing cover 1.82.

[0108] like Figure 7 As shown, the camera device 2 includes:

[0109] A cabin 2.1, wherein a motor 2.3 is arranged in the cabin 2.1, and a groove is provided in the middle of the cabin 2.1;

[0110] A camera assembly 2.2, which is installed in a groove in the middle of the cabin 2.1 and is used to observe the inner wall of the water pipe and the movement and posture of other instruments;

[0111] The motor 2.3 drives the camera assembly 2.2 to lift and lower the camera assembly through the gear assembly 2.4.

[0112] Sealing plugs 12.6 are arranged at the front and rear ends of the cabin body 2.1, a protective cover 12.5 is arranged on the outer side of the sealing plug 12.6, and a sealing ring V2.7 is arranged between the sealing plug 12.6 and the inner wall of the cabin body 2.1.

[0113] Specifically, when working, the water pipe camera device enters the water pipe, and the camera assembly 2.2 is lifted from the groove under the drive of the motor 2.3, and takes pictures to observe the situation in the water pipe.

[0114] like Figure 8 As shown, the camera assembly 2.2 includes:

[0115] A camera and a fixing seat 2.24, wherein the camera and the fixing seat 2.24 are mounted on a rotating disk 2.25, and the rotating disk 2.25 is driven by a motor and a motor base 2.28;

[0116] The glass cover 2.23 is a circular cover; the glass cover 2.23 is sleeved on the outside of the camera and the fixing seat 2.24, and the upper and lower ends of the glass cover 2.23 are sealed by the camera upper end cover 2.21 and the camera lower end cover 2.27, that is, sealed by the sealing ring VI2.22;

[0117] LED lamp II2.26, the LED lamp II2.26 is arranged in the glass cover 2.23.

[0118] Specifically, when working, the camera and the fixing seat 2.24 are driven by the rotating disk 2.25 and the motor and the motor base 2.28 to rotate, so as to observe the surrounding situation at 360 degrees. The LED lamp II 2.26 is used to illuminate the dark environment.

[0119] like Fig. 9 As shown, the gear assembly 2.4 includes:

[0120] A conversion shaft II2.42, one end of which is connected to the motor 2.3, and the other end of which is a bevel gear III2.43;

[0121] a first rotating shaft 2.44, on which is disposed bevel teeth meshing with the bevel gear III 2.43;

[0122] The L-shaped wire-passing tube 2.45, the first rotating shaft 2.44 drives the L-shaped wire-passing tube 2.45 to rotate through the gear set, and the L-shaped wire-passing tube 2.45 is used to connect the camera assembly 2.2.

[0123] The gear set includes:

[0124] a first gear 2.46, the first gear 2.46 being arranged on the first rotating shaft 2.44;

[0125] a second gear 2.48, the second gear 2.48 meshing with the first gear 2.46;

[0126] A second rotating shaft 2.47, on which a second gear 2.48 and an L-shaped wire passing tube 2.45 are fixedly mounted.

[0127] Among them, the first rotating shaft 2.44 and the second rotating shaft 2.47 are both installed on the gear set bracket 2.41. A chassis is set on the side where the gear set bracket 2.41 is connected to the motor 2.3. The chassis is sealed to the cabin 2.1 so that the space where the motor 2.3 is located will not enter the water in the tap water pipe.

[0128] The L-shaped wire passing tube 2.45 includes a base 2.451, the bottom of which is fixedly mounted on the second rotating shaft 2.47; an L-shaped wire passing hole is arranged inside the base 2.451, and a threaded connection end 2.452 is arranged at the outlet of the wire passing hole, and the threaded connection end 2.452 is used to connect with the camera assembly 2.2.

[0129] like Fig.10 As shown, the pipeline leakage measuring instrument 3 includes:

[0130] A measurement subject, the measurement subject comprising:

[0131] Sensor 3.4;

[0132] A sensor protection cover 3.3, wherein the sensor protection cover 3.3 is sleeved on the outside of the sensor 3.4;

[0133] A buoyancy device 3.6, wherein the buoyancy device 3.6 is integrally connected to the sensor protection cover 3.3;

[0134] The sealing structure is arranged at both ends of the measuring body and is used to seal both ends of the sensor protection cover 3.3.

[0135] The sealing structure includes:

[0136] Two sealing plugs II3.2, one sealing plug II3.2 is arranged at the outer end of the sensor protection cover 3.3, and the other sealing plug 3.2 is arranged at the outer end of the buoyancy device 3.6.

[0137] The sealing plug II3.2 and the sensor protection cover 3.3 and the buoyancy device 3.6 are sealed with a sealing ring VII to ensure that no water enters the pressurized water pipe.

[0138] Protective covers II3.1 are provided at both ends of the measuring body.

[0139] The sensor 3.4 is a RHSA-20 spherical standard hydrophone, the sensor protective cover 3.3 and the buoyancy device 3.6 are circular structures, one end of the protective cover II3.1 is circular and connected to the ends of the sensor protective cover 3.3 and the buoyancy device 3.6 respectively, and the other end of the protective cover II3.1 is conical to reduce water resistance.

[0140] The protective cover II3.1 is used to protect the connected rubber hose from being scratched by sharp objects in the water pipe. The protective cover II3.1 is made of buoyancy material to reduce the density at both ends of the instrument and the overall weight of the instrument. The front end of the protective cover II3.1 is designed to be conical to match its low-density characteristics and reduce its resistance in the water.

[0141] The buoyancy device 3.6 is a buoyancy material with a density of 0.38±0.02g / cm^3, a water absorption rate of ≤1% in 24 hours, and a compression strength of ≥10Mpa. A plurality of holes are arranged on the buoyancy device 3.6.

[0142] In this embodiment, the buoyancy device 3.6 is SBM038 produced by Qingdao Marine Chemical Industry Research Institute. The buoyancy material is a solid buoyancy material, which is a solid compound obtained by filling an inorganic light filling material into an organic polymer material through a physical and chemical reaction.

[0143] like Fig.11 As shown, the electronic warehouse 4 includes:

[0144] Electronic compartment housing 4.2;

[0145] A control panel 4.6, which is disposed in the electronic compartment housing 4.2;

[0146] A front end plugging head 4.1, which is installed at the front end of the electronic compartment housing 4.2;

[0147] A Y-shaped sealing ring 4.8, the Y-shaped sealing ring 4.8 is installed at the rear end of the electronic compartment housing 4.2;

[0148] An optical cable 4.10, one end of which is connected to the control board 4.6, and the other end of which passes through a Y-shaped sealing ring 4.8 to connect to an external power supply.

[0149] The control panel 4.6 is used to control the self-driven water pipe leakage detection instrument, and the electronic compartment 4 follows behind to control the crawling structure 1, the camera device 2, and the pipeline leakage measuring instrument 3.

[0150] The electronic compartment shell 4.2 is a cylindrical structure, and the front end sealing head 4.1 is arranged on the inner side of the front end of the electronic compartment shell 4.2, and a sealing ring VIII is arranged between the two; the rear end of the electronic compartment shell 4.2 is provided with a fixing plate 4.7 integrated therewith, and the fixing plate 4.7 is provided with a hole for allowing the optical cable 4.10 to pass through, and a Y-shaped sealing ring 4.8 is fixed together with the fixing plate 4.7.

[0151] Specifically, the electronic compartment housing 4.2 is designed to be cylindrical, so that it can be easily moved in the water pipe. The front end plugging head 4.1 is used to seal the front end of the electronic compartment housing 4.2, and the Y-shaped sealing ring 4.8 is used to seal the rear end of the electronic compartment housing 4.2.

[0152] A front end protection cover 4.5 is provided on the front end plugging head 4.1, and the front end protection cover 4.5 is used to protect the front end plugging head 4.1.

[0153] A gland 4.3 is provided between the Y-shaped sealing ring 4.8 and the fixing plate 4.7, and an optical cable channel is provided in the middle of the gland 4.3 for allowing the optical cable 4.10 to pass through.

[0154] like Fig.12 As shown, the Y-type sealing ring 4.8 includes:

[0155] A connecting end 4.81, wherein the connecting end 4.81 is fixed to the fixing plate 4.7 by screws, and a stepped groove 8.11 is provided in the middle of the connecting end 4.81 for mounting the gland 4.3;

[0156] A support leg end 4.82, wherein a through hole 4.821 is provided inside the support leg end 4.82;

[0157] The groove body 4.811 is communicated with the through hole 4.821.

[0158] The outer side of the support leg end 4.82 is covered with a pressure cap 4.9.

[0159] The optical cable 4.10 passes through the groove 4.811 and the through hole 4.821 of the Y-shaped sealing ring 4.8, wherein the inner diameter of the through hole 4.821 is larger than the outer diameter of the optical cable 4.10, and a small pressing block 4.4 is arranged in the through hole 4.821 to press the optical cable, and the small pressing block 4.4 is fixed in the through hole 4.821 by a pressing cap 4.9.

[0160] Specifically, the optical cable 4.10 of the present invention passes through the Y-shaped sealing ring 4.8 and is connected to the control board 4.6 in the electronic compartment shell 4.2. The Y-shaped sealing ring 4.8, the small pressure block 4.4 and the pressure cap 4.9 work together to make the optical cable 4.10 completely sealed and connected to the electronic compartment shell 4.2.

[0161] A detection method, using a self-driven water pipe leak detection instrument, comprises the following steps:

[0162] S100: Clean up the site environment and set up a safe working area;

[0163] S200: placing the self-driven water pipe leakage detection instrument into the pipe to be detected and orienting it;

[0164] S300: The self-driven water pipe leakage detection instrument moves along the pipe to be detected and performs leakage detection;

[0165] S400: After the leakage detection is completed, the self-driven water pipe leakage detection instrument is retracted.

[0166] Step S200 includes:

[0167] S201: Open the inlet manhole cover of the pipeline to be inspected, and install a fixing cylinder on the inlet;

[0168] S202: installing a lowering cylinder that can move up and down along the fixed cylinder in the fixed cylinder, and placing the self-driven water pipe leakage detection instrument in the lowering cylinder;

[0169] S203: The lowering tube is driven to a designated position in the pipeline to be inspected, that is, the front end of the lowering tube extends into 1 / 3 of the length of the pipeline to be inspected;

[0170] S204: lower the self-driven water pipe leakage detection instrument, and with the assistance of the camera device 2, complete the orientation of the self-driven water pipe leakage detection instrument, and then start crawling, stop crawling after releasing a certain length, and enter the initial measurement state.

[0171] Step S300 includes:

[0172] S301: Starting position measurement, GPS positioning, and the operator in the vehicle records as required;

[0173] S302: the self-driven water pipe leakage detection instrument starts crawling, starts recording images and sound wave data, and stops crawling after crawling for 10 meters, stops recording sound wave data, and performs positioning;

[0174] S303: Repeat step S302 every 10 meters of crawling, and if any abnormality is found, perform positioning and fixed-point measurement;

[0175] S304: After the measurement is completed, the crawling is stopped, the camera device 2 is turned to rear view, the data recording is stopped, the screen display is only used for monitoring, and the self-driven water pipe leakage detection instrument is recovered.

[0176] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-driven water pipe leak detection instrument, characterized in that: include: A crawling structure (1), wherein the crawling structure (1) is a self-propelled structure capable of self-propelled movement; A camera device (2), the camera device (2) being used to photograph the interior of the pipeline; The camera device (2) comprises: A cabin (2.1), wherein a motor (2.3) is arranged in the cabin (2.1), and a groove is provided in the middle of the cabin (2.1); A camera assembly (2.2), the camera assembly (2.2) being installed in a groove in the middle of the cabin (2.1) and being used to observe the inner wall of the water pipe and the movement and posture of other instruments; The motor (2.3) drives the camera assembly (2.2) to perform lifting and lowering movements via the gear assembly (2.4); Sealing plugs I (2.6) are provided at the front and rear ends of the cabin body (2.1), a protective cover I (2.5) is provided on the outside of the sealing plug I (2.6), and a sealing ring V (2.7) is provided between the sealing plug I (2.6) and the inner wall of the cabin body (2.1); The camera component (2.2) includes: A camera and a fixing seat (2.24), wherein the camera and the fixing seat (2.24) are mounted on a rotating disk (2.25), and the rotating disk (2.25) is driven by a motor and a motor base (2.28); A glass cover (2.23), wherein the glass cover (2.23) is a circular cover; the glass cover (2.23) is sleeved on the outside of the camera and the fixing seat (2.24); the upper and lower ends of the glass cover (2.23) are sealed by the camera upper end cover (2.21) and the camera lower end cover (2.27), respectively, that is, sealed by the sealing ring VI (2.22); LED lamp II (2.26), wherein the LED lamp II (2.26) is arranged in the glass cover (2.23); The gear assembly (2.4) comprises: A conversion shaft II (2.42), one end of which is connected to the motor (2.3) and the other end of which is a bevel gear III (2.43); A first rotating shaft (2.44), wherein the first rotating shaft (2.44) is provided with bevel teeth meshing with the bevel gear III (2.43); An L-shaped wire-passing tube (2.45), wherein the first rotating shaft (2.44) drives the L-shaped wire-passing tube (2.45) to rotate via a gear set, and the L-shaped wire-passing tube (2.45) is used to connect to a camera assembly (2.2); The gear set includes: A first gear (2.46), the first gear (2.46) being arranged on a first rotating shaft (2.44); A second gear (2.48), the second gear (2.48) meshing with the first gear (2.46); A second rotating shaft (2.47), on which a second gear (2.48) and an L-shaped wire passing tube (2.45) are fixedly mounted; The first rotating shaft (2.44) and the second rotating shaft (2.47) are both mounted on the gear set bracket (2.41); a chassis is provided on the side where the gear set bracket (2.41) is connected to the motor (2.3); the chassis is sealed to the cabin (2.1), so that the space where the motor (2.3) is located will not be infiltrated by water in the water pipe; The L-shaped wire-passing tube (2.45) comprises a base (2.451), the bottom of which is fixedly mounted on the second rotating shaft (2.47); an L-shaped wire-passing hole is arranged inside the base (2.451), a threaded connection end (2.452) is arranged at the outlet of the wire-passing hole, and the threaded connection end (2.452) is used to connect to the camera assembly (2.2); A pipeline leakage measuring instrument (3), wherein the pipeline leakage measuring instrument (3) is used to detect whether a pipeline is leaking; The pipeline leakage measuring instrument (3) comprises: A measurement subject, the measurement subject comprising: Sensors (3.4); A sensor protection cover (3.3), wherein the sensor protection cover (3.3) is sleeved on the outside of the sensor (3.4); A buoyancy device (3.6), wherein the buoyancy device (3.6) is integrally connected to the sensor protection cover (3.3); A sealing structure, which is arranged at both ends of the measuring body and is used to seal both ends of the sensor protection cover (3.3); An electronic compartment (4), wherein a control panel (4.6) is installed in the electronic compartment (4), and the electronic compartment (4) supplies power to the crawling structure, the camera device, and the pipeline leakage measuring instrument; The crawling structure (1) is arranged at the front end, and the camera device (2), the pipeline leakage measuring instrument (3) and the electronic compartment (4) are connected to each other and to the rear end of the crawling structure.

2. The self-driven water pipe leakage detection instrument according to claim 1, characterized in that: The crawling structure (1) comprises: A motor housing (1.1), wherein a driving motor (1.65) is arranged in the motor housing (1.1); A front driven wheel assembly (1.2), wherein the front driven wheel assembly (1.2) is mounted at the front end of the motor compartment body (1.1); A rear-end driven wheel assembly (1.3), wherein the rear-end driven wheel assembly (1.3) is mounted at the rear end of the motor compartment body (1.1); A toothed chain (1.4), wherein two toothed chains (1.4) are provided and are respectively located on the left and right sides of the motor compartment body (1.1), and the two toothed chains (1.4) are connected between the front driven wheel assembly (1.2) and the rear driven wheel assembly (1.3); A gear set bracket assembly (1.5), wherein the gear set bracket assembly (1.5) is driven by a drive motor (1.65), and the gear set bracket assembly (1.5) drives the toothed chain (1.4); A sealed camera assembly (1.7) is mounted on the front end of the motor compartment body (1.1) and is used for the crawling structure (1) to observe the road conditions in the water pipe when the crawling structure (1) is moving forward.

3. The self-driven water pipe leakage detection instrument according to claim 2, characterized in that: The gear train bracket assembly (1.5) comprises: Two gear brackets (1.52), the two gear brackets (1.52) are symmetrically fixed outside the motor housing (1.1), and a baffle (1.54) is installed between the tops of the two gear brackets (1.52); Two shafts (1.57), the two shafts (1.57) are installed between two gear brackets (1.52) through retaining bearings (1.51); Two sets of left and right bevel gears I (1.53) and gears (1.58) are mounted on one of the shafts (1.57), and the bevel gear I (1.53) is meshed with a bevel gear II (1.68) disposed on the output shaft of the drive motor (1.65); Two left and right sets of spur gears (1.55) and sprockets (1.56) are mounted on the other shaft (1.57). The spur gears (1.55) are meshed with the gears (1.58). The left and right sprockets (1.56) respectively drive the toothed chains (1.4) on the left and right sides to rotate.

4. The self-driven water pipe leakage detection instrument according to claim 2, characterized in that: A dynamic seal assembly (1.6) is provided on the output shaft of the drive motor (1.65) for sealing, and the dynamic seal assembly (1.6) comprises: A bearing cover (1.69), the bearing cover (1.69) covers the drive motor (1.65), and a sealing ring I (1.64) is provided on the bearing cover (1.69); A clamping cover (1.61), wherein the clamping cover (1.61) is arranged on the bearing cover (1.69); The output shaft of the driving motor (1.65) passes through the bearing cover (1.69) to connect to the conversion shaft I (1.67), the conversion shaft I (1.67) is installed on the bearing (1.66), and the conversion shaft I (1.67) passes through the clamping cover (1.61) to connect to the bevel gear II (1.68); A pan-seal (1.62) is arranged between the conversion shaft I (1.67) and the pressing cover (1.61), and the pan-seal (1.62) is pressed by the pan-seal stopper (1.63).

5. The self-driven water pipe leakage detection instrument according to claim 1, characterized in that: The electronic warehouse (4) comprises: Electronic compartment housing (4.2); A control panel (4.6), wherein the control panel (4.6) is arranged in the electronic compartment housing (4.2); A front end plugging head (4.1), the front end plugging head (4.1) being mounted on the front end of the electronic compartment housing (4.2); A Y-shaped sealing ring (4.8), wherein the Y-shaped sealing ring (4.8) is installed at the rear end of the electronic compartment housing (4.2); An optical cable (4.10), one end of the optical cable (4.10) is connected to the control board (4.6), and the other end of the optical cable (4.10) passes through a Y-shaped sealing ring (4.8) to connect to an external power supply.

6. A detection method, characterized in that: Using the self-driven water pipe leakage detection instrument as claimed in claim 1, comprising the following steps: S100: Clean up the site environment and set up a safe working area; S200: placing the self-driven water pipe leakage detection instrument into the pipe to be detected and orienting it; S300: The self-driven water pipe leakage detection instrument moves along the pipe to be detected and performs leakage detection; S400: After the leakage detection is completed, the self-driven water pipe leakage detection instrument is retracted.

7. The detection method according to claim 6, characterized in that: The step S200 includes: S201: Open the inlet manhole cover of the pipeline to be inspected, and install a fixing cylinder on the inlet; S202: installing a lowering cylinder that can move up and down along the fixed cylinder in the fixed cylinder, and placing the self-driven water pipe leakage detection instrument in the lowering cylinder; S203: The lowering tube is driven to a designated position in the pipeline to be inspected, that is, the front end of the lowering tube extends into 1 / 3 of the length of the pipeline to be inspected; S204: lowering the self-driven water pipe leakage detection instrument, and with the assistance of the camera device (2), completing the orientation of the self-driven water pipe leakage detection instrument, and then starting to crawl, and stopping crawling after releasing a certain length, and entering the initial measurement state.

8. The detection method according to claim 7, characterized in that: The step S300 includes: S301: Starting position measurement, GPS positioning, and the operator in the vehicle records as required; S302: the self-driven water pipe leakage detection instrument starts crawling, starts recording images and sound wave data, and stops crawling after crawling for 10 meters, stops recording sound wave data, and performs positioning; S303: Repeat step S302 every 10 meters of crawling, and if any abnormality is found, perform positioning and fixed-point measurement; S304: After the measurement is completed, the crawling is stopped, the camera device (2) is turned to rear view, data recording is stopped, the screen display is only used for monitoring, and the self-driven water pipe leakage detection instrument is recovered.

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