CN111811748A - Comprehensive leakage detection device and method for reservoir hydropower station - Google Patents
Comprehensive leakage detection device and method for reservoir hydropower station Download PDFInfo
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- CN111811748A CN111811748A CN201910288694.6A CN201910288694A CN111811748A CN 111811748 A CN111811748 A CN 111811748A CN 201910288694 A CN201910288694 A CN 201910288694A CN 111811748 A CN111811748 A CN 111811748A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/22—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
- G01M3/243—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations for pipes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
- G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/40—Investigating fluid-tightness of structures by using electric means, e.g. by observing electric discharges
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- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a comprehensive leakage detection device and a comprehensive leakage detection method for a reservoir hydropower station, and the comprehensive leakage detection device comprises a host and a probe, wherein the surface of the probe is provided with a shell, a tracer controller, a tracer storage, a tracer releasing device and an image acquisition device are sequentially arranged in the shell, the device forms a visible motion track along with the flow of water by controlling and releasing a liquid tracer into the water, and records and stores the motion track of the tracer through a high-definition camera system, so that the analysis and research of the flow characteristics of the water in various states are facilitated, the leakage position, the leakage point, the leakage direction and the leakage degree can be accurately and intuitively determined, and even the motion rule and the trend of each point of the water can be researched by establishing a numerical simulation model; the comprehensive detection method for the leakage of the reservoir water station enables the leakage detection to be more accurate and visual; the detection device can realize leakage detection in various environments such as clear water, muddy water and the like, is not influenced by water depth, and is accurate in detection.
Description
Technical Field
The invention relates to a device and a method for detecting leakage of a reservoir hydropower station, in particular to a device and a method for comprehensively detecting leakage of a reservoir hydropower station, and belongs to the field of leakage detection of reservoirs and hydropower stations.
Background
At present, 9.8 thousands of reservoirs are built in China, more than 4 thousands of dangerous reservoirs exist, leakage is a common problem of the dangerous reservoirs, the serious leakage problem is directly related to the safety of the dam, and the method is very important for accurately and intuitively checking leakage positions, leakage points, leakage directions and leakage degrees of the dangerous reservoirs.
At present, the traditional methods for detecting leakage of reservoirs and hydropower stations mainly comprise a tracing method, a drilling water injection (or pressurized water) test method, a flow velocity test method, a sonar method and other object detection methods, but under the conditions of small water flow velocity, scattered leakage points and small leakage flow of a single leakage point, the detection method cannot accurately detect and cannot visually observe the leakage state due to limited detection precision.
Tracing method: the tracer is put in the upstream side (reservoir area or inspection hole) of the part to be inspected, and whether the tracer appears or not is observed at the part (water outlet point or monitoring hole) with possible seepage, so as to judge the seepage part and estimate the seepage speed. The method can only realize rough judgment, and has poor accuracy, complex process and extremely low detection efficiency.
Borehole water injection (or water pressure) test method: the amount of leaked water is observed by injecting (or pressing) water into the detection hole, and the permeability coefficient of the detection section is calculated. The detection method is carried out in a subsection mode, generally, the test is carried out in a subsection mode of 5m, the measured permeability coefficient is the average value of the test section, the leakage amount and the flow speed of a real leakage point are not the average value, the detection precision is poor, and the leakage point and the leakage direction cannot be accurately judged.
Flow rate test method: at present, two flow velocity testing methods are available, one is that a solvent is released in a detection hole, the concentration change of the solvent is continuously detected through an instrument, then the flow velocity value is calculated, the detection precision is low, the error is large, and the flow direction cannot be judged. The other method is that an instrument is used for directly capturing the motion track of particles in the water body, and then the motion speed of the particles is calculated through software, the detection precision of the particles in the horizontal direction is high, but the situation of the vertical flow cannot be judged, and the judgment error of the flow direction is large. The detection process is simple, the operation is convenient, and the efficiency is relatively high.
A sonar method: the measurement of the water velocity field is realized by utilizing the seismoelectric theory and the excellent propagation characteristic of sound waves in water. The propagation of sound waves in a seepage field is measured by a sonar detector, the sound wave propagation speed in a downstream direction is increased, the sound wave propagation speed in a counter-current direction is decreased, and different propagation time exists in the same propagation distance. And establishing a flow velocity equation of water flow particles in the continuous seepage field according to the space-time distribution of the measurement data, and further solving the flow velocity value of the detection point. The method can realize accurate detection in a wide water area environment, and the detection precision is greatly reduced and the seepage direction cannot be judged due to the fact that the method is often influenced by the nonuniformity of surrounding media in a drill hole, so that the method is not intuitive.
Other geophysical prospecting methods: the method comprises an electromagnetic method, a geological radar, an electrical method and the like, rough judgment can be realized in the aspect of detecting shallow layer and large-range leakage, accurate detection cannot be realized due to serious interference influence of the properties of surrounding media, the detection precision is lower along with the increase of the detection depth, only macroscopic analysis judgment is realized, and sometimes errors are very large.
With the application of underwater robots and in-hole video equipment, the detection of reservoir and hydropower station leakage is helped, but under the conditions that a water body is particularly clear or turbid and the flow rate is not high, the flow direction and the flow rate of the water body cannot be accurately judged by the underwater robots and the in-hole video equipment, even if a leakage point exists, the accurate leakage position cannot be directly observed by the underwater robots, the in-hole video equipment or other methods, and if rising or falling water flow exists in a detection drill hole, even if a camera instrument can capture the movement track of impurities, the density of the impurities is uncertain, the movement speed of the water flow cannot be judged by the camera instrument, and the movement direction of the water flow cannot be judged.
Therefore, in order to determine the leakage position more accurately, clarify the leakage degree and observe the seepage state more intuitively, it is urgently needed to develop a device and a comprehensive detection method capable of recording and observing the subtle phenomena such as the flow state of the water body in the water body such as the drill hole, the upstream of the reservoir dam and the like.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the existing problems and provides a comprehensive leakage detection device and a comprehensive leakage detection method for a reservoir hydropower station.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention provides a comprehensive leakage inspection device for a reservoir hydropower station, which comprises a host and a probe, wherein the surface of the probe is provided with a shell, and a tracer controller, a tracer storage, a tracer releasing device and an image acquisition device are sequentially arranged in the shell; the tracer storage device comprises a cylinder body, a piston, a feeding hole, a sealing screw, a connecting rod and a sealing ring, the piston is arranged in the cylinder body, the connecting rod is arranged at the right end of the piston, the feeding hole is arranged at the left end of the cylinder body, and the sealing screw is arranged at the top end of the feeding hole; the tracer releasing device comprises an electromagnetic valve, a hose, a water outlet pipe, a rubber pipe, a quick-connection plug, a through hole, a porous medium and a check valve, wherein one end of the electromagnetic valve is connected with the hose, one end of the hose is connected with the water outlet pipe, the water outlet pipe is connected with the rubber pipe in an inserting mode through the quick-connection plug, the through hole is formed in the tail end of the rubber pipe, and the porous medium is arranged outside the hose; the image acquisition device comprises an integrated circuit board, a high-definition camera and LED lamps, wherein the left end of the integrated circuit board is provided with the high-definition camera, the periphery of the high-definition camera is provided with the LED lamps, the LED lamps are provided with four groups of lamp beads, and one group of lamp beads are purple light lamp beads.
As a preferred technical scheme of the invention, the tracer controller is made of an electric hydraulic rod, the electric hydraulic rod is provided with an extending end, the tracer storage and the electric hydraulic rod are fixed by welding through the connecting rod and the extending end, and the sealing ring is arranged on the contact surface of the connecting rod and the cylinder body.
As a preferred technical scheme of the invention, a discharge hole is formed in the left end of the cylinder body, and the left end of the discharge hole is connected with the right end of the electromagnetic valve.
As a preferred technical solution of the present invention, the high definition camera and the LED are electrically connected to the integrated circuit board.
As a preferable technical solution of the present invention, the housing includes a first housing, a second housing, a third housing transparent glass, and a fixing ring, the first housing, the second housing, and the third housing are all fixedly connected through a connecting ring, a left end of the third housing forms a sealed housing through the transparent glass and the fixing ring, and a sealing plate is further disposed between the second housing and the third housing.
As a preferable technical solution of the present invention, the transparent glass and the third housing are fixed by the fixing ring, and the inner wall of the fixing ring is provided with a thread buckle.
As a preferable technical scheme of the invention, the tail end of the water outlet pipe is also provided with a check valve.
As a preferred technical solution of the present invention, the electro-hydraulic rod, the electromagnetic valve, the integrated circuit board and the host are electrically connected by a cable.
A comprehensive detection method for reservoir dam surface leakage comprises the following steps:
placing a probe in a water area corresponding to a suspected leakage area of a dam, carrying out all-dimensional observation and video recording along a dam face, checking various crack and pore characteristics, and preliminarily judging possible leakage positions;
releasing a tracer agent to the possible leakage part close to the crack or the pore area, observing and recording the motion track characteristics of the tracer agent, and accurately judging the key leakage part and the seepage direction;
step three, further analyzing the dam body leakage degree through the recorded water body flow state characteristics of the upstream leakage part of the dam surface, the density and the size of pores and cracks and the like;
marking key leakage positions so as to accurately find the leakage positions in the anti-seepage treatment construction;
and fifthly, observing the water body flow state characteristics of the leakage part again during or after the anti-seepage treatment process, and analyzing and evaluating the anti-seepage treatment effect.
A comprehensive detection method for internal leakage of a reservoir dam body comprises the following steps:
step one, forming a hole in a corresponding position of a suspected leakage area of a dam by a drilling machine;
step two, putting a perforated pipe under a detection hole with a possible hole collapse for wall protection;
placing a probe in the drilled hole, carrying out all-dimensional observation and video recording on the hole, checking various cracks, pore characteristics and water body flow state characteristics, and preliminarily judging possible leakage positions and seepage directions;
releasing the tracer agent at a fixed point of a possible leakage part, and further observing and recording the movement track characteristics of the tracer agent;
step five, comparing and analyzing the water body flow state characteristics of each part, and analyzing and judging accurate leakage parts, leakage points, leakage flow directions and leakage degrees;
and sixthly, observing the water body flow state characteristics of the leakage part again during or after the anti-seepage treatment process, and analyzing and evaluating the anti-seepage treatment effect.
The invention has the following beneficial effects: the comprehensive leakage detection device for the reservoir hydropower station is used for controlling the released liquid tracer to enter a water body, forming a visible motion track along with the flow of the water body, recording and storing the motion track of the tracer through a high-definition camera system, facilitating the analysis and research of the flow characteristics of the water body in various states, accurately and visually determining the leakage position, the leakage point, the leakage direction and the leakage degree, and even researching the motion rule and trend of each point of the water body by establishing a numerical simulation model; the anti-seepage treatment effect can be directly compared and evaluated in the anti-seepage treatment process; the comprehensive detection method for the leakage of the reservoir water station enables the leakage detection to be more accurate and visual. The detection device can realize leakage detection in various environments such as clear water, muddy water and the like, is not influenced by water depth, and is accurate in detection.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the left end structure of the third housing of the present invention;
FIG. 3 is a schematic view of the internal structure of a third housing of the present invention;
FIG. 4 is a schematic view of the left end structure of the second housing of the present invention;
fig. 5 is a schematic view of the internal structure of the second housing of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1
As shown in fig. 1-5, the invention provides a comprehensive leakage inspection device for a reservoir hydropower station, which comprises a host 1 and a probe 2, wherein the surface of the probe 2 is provided with a shell 8, and a tracer controller 4, a tracer storage 3, a tracer release device 5 and an image acquisition device 6 are sequentially arranged in the shell 8; the tracer storage device 3 comprises a cylinder body 31, a piston 32, a feeding hole 33, a sealing screw 34, a connecting rod 35 and a sealing ring 36, wherein the piston 32 is arranged in the cylinder body 31, the connecting rod 35 is arranged at the right end of the piston 32, the feeding hole 33 is arranged at the left end of the cylinder body 31, and the sealing screw 34 is arranged at the top end of the feeding hole 33; the tracer releasing device 5 comprises an electromagnetic valve 51, a hose 52, a water outlet pipe 53, a rubber pipe 54, a quick connector 55, a through hole 56, a porous medium 57 and a check valve 58, wherein one end of the electromagnetic valve 51 is connected with the hose 52, one end of the hose 52 is connected with the water outlet pipe 53, the water outlet pipe 53 is connected with the rubber pipe 54 in an inserting mode through the quick connector 55, the tail end of the rubber pipe 54 is provided with the through hole 56, and the porous medium 57 is arranged outside the through hole 56; the image acquisition device 6 comprises an integrated circuit board 61, a high-definition camera 62 and LED lamps 63, the high-definition camera 62 is arranged at the left end of the integrated circuit board 61, the LED lamps 63 are arranged on the periphery of the high-definition camera 62, the LED lamps 63 are provided with four groups of ultraviolet lamp beads, one group of the ultraviolet lamp beads are ultraviolet lamp beads, the comprehensive leakage detection device for the reservoir hydropower station can control and release liquid tracer to enter a water body, a visible motion track is formed along with the flow of the water body, the motion track of the tracer is recorded and stored through a high-definition camera system, the flow characteristics of the water body in various states can be conveniently analyzed and researched, the leakage position, the leakage point, the leakage direction and the leakage degree can be accurately and visually determined, and even the motion rule and trend of each point of the water body can be researched; the anti-seepage treatment effect can be directly compared and evaluated in the anti-seepage treatment process; the comprehensive reservoir leakage detection method enables the leakage detection to be more accurate and visual. The detection device can realize leakage detection in various environments such as clear water, muddy water and the like, is not influenced by water depth, and is accurate in detection.
The tracer controller 4 is made of an electric hydraulic rod, the electric hydraulic rod is provided with an extending end, the tracer storage 3 and the electric hydraulic rod are fixedly welded through a connecting rod 35 and the extending end, the connecting rod 35 and the extending end of the electric hydraulic rod are ensured by welding, and the tracer controller 4 can normally eject the connecting rod 35; the contact surface of the connecting rod 35 and the cylinder 31 is provided with a sealing ring 36, and the sealing ring 36 can seal the contact surface of the connecting rod 35 and the cylinder 31 to ensure the sealing performance of the cylinder 31.
The left end of the cylinder body 31 is provided with a discharge port, the left end of the discharge port is communicated with the right end of the electromagnetic valve 51, and the cylinder body 31 is communicated with the electromagnetic valve 51, so that the comprehensive leakage inspection device for the reservoir hydropower station can complete the control of the electromagnetic valve 51 inside the probe 2 through the host 1, and is convenient for a user to operate the comprehensive leakage inspection device.
High definition digtal camera 62 and LED lamp 63 all with integrated circuit board 61 electric connection, high definition digtal camera 62 can be shot the tracer flow direction under water, LED lamp 63 can illuminate fluid under water for high definition digtal camera 62 is convenient for shoot, the signal after the shooting passes through collection dirt circuit board 61 and passes through connecting wire 7 with the signal and transmit to host computer 1, the operating personnel of being convenient for observe the inside tracer flow direction of reservoir hydropower station, thereby reason out the inside seepage position of reservoir hydropower station.
The shell 8 comprises a first shell 81, a second shell 82, a third shell 83, transparent glass 84 and a fixing ring 85, wherein the first shell 81, the second shell 82 and the third shell 83 are fixedly connected through a connecting ring 86, a sealing plate 87 is further arranged between the second shell 82 and the third shell 83, the left end of the third shell 83 forms a sealed shell through the transparent glass 84 and the fixing ring 85, and the connecting ring 86 enables the first shell 81, the second shell 82 and the third shell 83 to be convenient to detach, repair and maintain, so that devices inside the shell 8 are convenient to detach; the sealing plate 87 separates the integrated circuit board 61 from the tracer storage 3 and the tracer control device 4, further protects the front-end electronic element area, and prevents water and tracer from entering the front-end area.
The tail end of the water outlet pipe 53 is also provided with a check valve 58, the check valve 58 can prevent the detected water body from flowing back to the cylinder body 31 due to the fact that the internal pressure of the tracer is reduced after the tracer is extruded through the tracer controller 4, the water flow of the reservoir hydropower station can not flow back to the inside of the cylinder body 31 due to the reduction of the internal pressure of the probe 2, and the detection precision and the service life of the whole probe 2 are guaranteed.
Electronic hydraulic stem, solenoid valve 51, integrated circuit board 61 all passes through cable conductor 7 electric connection with host computer 1, host computer 1 includes control cabinet and display screen, the control cabinet is used for control probe light source, the camera lens, the tracer controller, the degree of depth record, switch, the display screen, image data handles, the storage, the record, the edition etc, the display screen is used for the image that real-time display probe gathered, electric connection such as memory content and relevant image editing characteristic makes this reservoir hydropower station seepage comprehensive inspection device be convenient for operate, degree of automation obtains guaranteeing, convenient to use personnel operate it, alleviate user of service's intensity of labour.
The device is a comprehensive leakage inspection device for a reservoir hydropower station, and when the device is required to be used;
under the condition that the water body of the reservoir hydropower station is clear, a user needs to install the light source of the LED lamp 63 installed in the third shell 83 firstly, so that three groups of lamp beads except purple lamp beads can emit light, after the user installs the LED lamp 63, the user opens the feed inlet 33 through the sealing screw 34, the user puts tracer into the cylinder 31 through the feed inlet 33 and seals the feed inlet 33 through the sealing screw 34, after the tracer injection of the tracer storage 3 is completed, the user puts the probe 2 into a designated place to concentrate the leakage position, after the designated position is reached, the user is electrically connected with the connecting wire 7 of the probe 2 through the host 1, so that the host 1 controls the probe 2, and the user opens the tracer controller 4, the electromagnetic valve 51, the high-definition camera 62 and the LED lamp 63 in sequence through the surface controller of the host 1, the tracer controller 4 is made of an electric hydraulic rod, the extending end of the electric hydraulic rod can generate leftward thrust on the connecting rod 35, the connecting rod 35 pushes the piston 32 to move leftwards in the cylinder 31, the tracer stored in the cylinder 31 is pushed out of the body by the piston 32, the sealing ring 36 can seal the contact surface of the connecting rod 35 and the cylinder 31 to ensure the sealing performance of the cylinder 31, the tracer fluid flows to the hose 52 through the electromagnetic valve 51, the hose 52 divides the tracer fluid into two parts to flow to the water outlet pipe 53 respectively, the tracer fluid in the water outlet pipe 53 flows to the rubber pipe 54 through a pipeline, the tracer fluid is released through the through hole 56 at the left end of the rubber pipe 54, the released tracer is quickly dispersed through the porous medium 57, the tail end of the water outlet pipe 53 is also provided with the check valve 58 to prevent the tested water from flowing back to the cylinder 31 due to the reduction of the internal pressure after the tracer fluid is pressed out, and the tracer fluid is quickly dispersed, as the water flow at the leakage crack generates flow velocity, the tracer fluid rapidly flows to the leakage crack, in the process that the tracer fluid flows in the detected water, the high-definition camera 62 shoots and records the tracer fluid, the LED lamp 63 can illuminate the deep water, the high-definition camera 62 can shoot and record the tracer fluid conveniently, the image shot and recorded by the high-definition camera 62 is integrated by the integrated circuit board 61, the integrated signal is transmitted to the host 1 through the connecting wire 7, a user can observe the flow direction of the tracer fluid through the surface display screen of the host 1 so as to judge the connectivity of the leakage crack, the shell 8 is arranged on the surface of the probe 2, the tracer controller 4, the tracer storage 3, the tracer release device 5 and the image acquisition device 6 are all arranged in the shell 8 to fully protect the electrical elements in the probe 2 and ensure the service life of the probe, the housing 8 comprises a first housing 81, a second housing 82 and a third housing 83, the first housing 81, the second housing 82 and the third housing 83 are all fixedly connected through a connecting ring 86, a sealing plate 87 is further arranged between the second housing 82 and the third housing 83, the left end of the third housing 83 forms a sealed housing through a transparent glass 84 and the fixing ring 85, and the connecting ring 86 facilitates the detachment of the first housing 81, the second housing 82 and the third housing 83, thereby facilitating the detachment, maintenance and repair of the devices inside the housing 8; the sealing plate 87 separates the integrated circuit board 61 from the tracer storage 3 and the tracer control device 4, further protects the front-end electronic element region, prevents the water body and the tracer from entering the third shell 83, the integrated circuit board 61 inside the third shell 83 is ensured, the high-definition camera 62 and the LED lamp 63 are ensured, the integrated circuit board 61 inside the third shell 83 is ensured, the service lives of the high-definition camera 62 and the LED lamp 63 are ensured, and the service life of the whole detection device is ensured.
Under the condition that a water body in a reservoir hydropower station is turbid, a user needs to replace light source lamp beads of an LED lamp 63 arranged in a third shell 83 first, so that one group of purple light lamp beads of the LED lamp 63 can generate purple light, diffraction is easy to generate due to shorter purple light wavelength, the penetrating power in water is relatively stronger, a tracer (fluorescent agent) is used in cooperation, the fluorescent agent can generate stronger fluorescence reflection under the irradiation of the purple light, so that the user can observe farther in muddy water, after the light source of the LED lamp 63 is replaced, the user opens a feed inlet 33 through a sealing screw 34, puts the tracer (fluorescent agent) into a cylinder 31 through the feed inlet 33, seals the feed inlet 33 through the sealing screw 34, and after the tracer (fluorescent agent) in a tracer storage 3 is injected, the user puts a probe 2 into a concentrated leakage position at a designated place, after reaching the designated position, the user uses the host 1 to be electrically connected with the connecting wire 7 of the probe 2, so that the host 1 controls the probe 2, the user uses the host 1 surface controller to sequentially open the tracer controller 4, the electromagnetic valve 51, the high-definition camera 62 and the LED lamp 63, the tracer controller 4 is made of an electric hydraulic rod, the extending end of the electric hydraulic rod can generate leftward thrust on the connecting rod 35, the connecting rod 35 pushes the piston 32 to move leftward inside the cylinder 31, tracer (fluorescent agent) fluid stored inside the cylinder 31 is pushed out of the body by the piston 32, the sealing ring 36 can seal the contact surface between the connecting rod 35 and the cylinder 31, the sealing performance of the cylinder 31 is ensured, the tracer (fluorescent agent) fluid flows to the hose 52 through the electromagnetic valve 51, the tracer (fluorescent agent) of the hose 52 is divided into two flows to the water outlet pipe 53, the tracer (fluorescent agent) fluid inside the water outlet pipe 53 flows to the rubber pipe 54 through the pipeline, the through hole 56 at the left end of the rubber tube 54 releases tracer (fluorescent agent) fluid, the released tracer (fluorescent agent) fluid is quickly dispersed through the porous medium 57, the tail end of the water outlet pipe 53 is also provided with a check valve 58 to prevent the tracer (fluorescent agent) fluid from flowing to the leakage crack rapidly because of the reduction of the internal pressure after being extruded, the tracer (fluorescent agent) fluid is quickly dispersed in the water flow, the tracer (fluorescent agent) fluid rapidly flows to the leakage crack due to the flow velocity of the water flow at the leakage crack, the high-definition camera 62 shoots the tested water body in the process of flowing, the LED lamp 63 can illuminate the deep water, the high-definition camera 62 shoots the tested water body conveniently, the image shot by the high-definition camera 62 is integrated through the integrated circuit board 61, the integrated signal is transmitted to the host 1 through the connecting wire 7, a user can observe the flow direction of tracer (fluorescent agent) fluid through a display screen on the surface of the host 1, so as to judge the connectivity of the leakage crack; the surface of the probe 2 is provided with a shell 8, the tracer controller 4, the tracer storage 3, the tracer releasing device 5 and the image acquisition device 6 are all arranged inside the shell 8, so that electrical components inside the probe 2 are fully protected, the service life of the electrical components is ensured, the shell 8 comprises a first shell 81, a second shell 82 and a third shell 83, the first shell 81, the second shell 82 and the third shell 83 are fixedly connected through a connecting ring 86, a sealing plate 87 is further arranged between the second shell 82 and the third shell 83, the left end of the third shell 83 forms a sealed shell through transparent glass 84 and a fixing ring 85, and the connecting ring 86 enables the first shell 81, the second shell 82 and the third shell 83 to be convenient to disassemble, so that the devices inside the shell 8 can be conveniently disassembled, repaired and maintained; the sealing plate 87 separates the integrated circuit board 61 from the tracer storage 3 and the tracer control device 4, further protects the front-end electronic element region, prevents water and tracer (fluorescent agent) from entering the third shell 83, the integrated circuit board 61 inside the third shell 83 is guaranteed, the high-definition camera 62 and the LED lamp 63 are guaranteed, the integrated circuit board 61 inside the third shell 83 is made to be guaranteed, the service lives of the high-definition camera 62 and the LED lamp 63 are guaranteed, and the service life of the whole detection device is guaranteed.
A comprehensive detection method for reservoir dam surface leakage comprises the following steps:
placing a probe in a water area corresponding to a suspected leakage area of a dam, carrying out all-dimensional observation and video recording along a dam face, checking various crack and pore characteristics, and preliminarily judging possible leakage positions;
releasing a tracer agent to the possible leakage part close to the crack or the pore area, observing and recording the motion track characteristics of the tracer agent, and accurately judging the key leakage part and the seepage direction;
step three, further analyzing the dam body leakage degree through the recorded water body flow state characteristics of the upstream leakage part of the dam surface, the density and the size of pores and cracks and the like;
marking key leakage positions so as to accurately find the leakage positions in the anti-seepage treatment construction;
and fifthly, observing the water body flow state characteristics of the leakage part again during or after the anti-seepage treatment process, and analyzing and evaluating the anti-seepage treatment effect.
A comprehensive detection method for internal leakage of a reservoir dam body comprises the following steps:
step one, forming a hole in a corresponding position of a suspected leakage area of a dam by a drilling machine;
step two, putting a perforated pipe under a detection hole with a possible hole collapse for wall protection;
placing a probe in the drilled hole, carrying out all-dimensional observation and video recording on the hole, checking various cracks, pore characteristics and water body flow state characteristics, and preliminarily judging possible leakage positions and seepage directions;
releasing the tracer agent at a fixed point of a possible leakage part, and further observing and recording the movement track characteristics of the tracer agent;
step five, comparing and analyzing the water body flow state characteristics of each part, and analyzing and judging accurate leakage parts, leakage points, leakage flow directions and leakage degrees;
and sixthly, observing the water body flow state characteristics of the leakage part again during or after the anti-seepage treatment process, and analyzing and evaluating the anti-seepage treatment effect.
The comprehensive leakage detection device for the reservoir hydropower station is used for controlling the released liquid tracer to enter a water body, forming a visible motion track along with the flow of the water body, recording and storing the motion track of the tracer through a high-definition camera system, facilitating the analysis and research of the flow characteristics of the water body in various states, accurately and visually determining the leakage position, the leakage point, the leakage direction and the leakage degree, and even researching the motion rule and trend of each point of the water body by establishing a numerical simulation model; the anti-seepage treatment effect can be directly compared and evaluated in the anti-seepage treatment process; the comprehensive reservoir leakage detection method enables the leakage detection to be more accurate and visual. The detection device can realize leakage detection in various environments such as clear water, muddy water and the like, is not influenced by water depth, and is accurate in detection.
The comprehensive leakage inspection device for the reservoir hydropower station has very wide application field and can be used in various industries such as water conservancy, hydropower, geological and mining, environmental protection, scientific research institutions, universities and the like; the main application is as follows: monitoring the water body flow state, checking the leakage position and the leakage degree of various water storage and delivery facilities, and researching the flow speed, the flow direction and the movement trend, the seepage or the diffusion range and the like of underground water and sewage with certain transparency. The internal leakage conditions of reservoirs and hydropower station dams can be checked through dam body drilling, and the internal leakage conditions comprise dam foundation leakage conditions, dam abutment leakage conditions and the like around the dam; the device can be assembled on an underwater robot by properly improving the front-end probe, can detect the leakage conditions of reservoirs, hydropower station dam bodies, various gates, large-scale water pipelines and various water storage pools, and can be used for researching the water flow characteristics under different boundary conditions.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A comprehensive leakage inspection device for a reservoir hydropower station comprises a host (1) and a probe (2), and is characterized in that a shell (8) is arranged on the surface of the probe (2), and a tracer controller (4), a tracer storage device (3), a tracer release device (5) and an image acquisition device (6) are sequentially arranged in the shell (8) from right to left;
the tracer storage device (3) comprises a cylinder body (31), a piston (32), a feeding hole (33), a sealing screw (34), a connecting rod (35) and a sealing ring (36), the piston (32) is arranged in the cylinder body (31), the connecting rod (35) is arranged at the right end of the piston (32), the feeding hole (33) is arranged at the left end of the cylinder body (31), and the sealing screw (34) is arranged at the top end of the feeding hole (33);
the tracer releasing device (5) comprises an electromagnetic valve (51), a hose (52), a water outlet pipe (53), a rubber pipe (54), a quick-connection plug (55), a through hole (56), a porous medium (57) and a check valve (58), one end of the electromagnetic valve (51) is connected with the hose (52), one end of the hose (52) is connected with the water outlet pipe (53), the water outlet pipe (53) and the rubber pipe (54) are connected through the quick-connection plug (55) in an inserting mode, the through hole (56) is formed in the tail end of the rubber pipe (54), and the porous medium (57) is arranged outside the through hole (56);
image acquisition device (6) include integrated circuit board (61), high definition digtal camera (62) and LED lamp (63), the left end of integrated circuit board (61) is equipped with high definition digtal camera (62), be equipped with around high definition digtal camera (62) LED lamp (63), LED lamp (63) are equipped with four groups of lamp pearls, and wherein a set of lamp pearl is purple light lamp pearl.
2. The comprehensive checking device for the leakage of the reservoir hydropower station according to claim 1, wherein the tracer controller (4) is made of an electric hydraulic rod, the electric hydraulic rod is provided with an extending end, the tracer storage device (3) and the electric hydraulic rod are fixed through the connecting rod (35) and the extending end in a welding mode, and the sealing ring (36) is arranged on the contact surface of the connecting rod (35) and the cylinder body (31).
3. The comprehensive checking device for the leakage of the reservoir hydropower station according to claim 1, wherein a discharge port is arranged at the left end of the cylinder body (31), and the left end of the discharge port is connected with the right end of the electromagnetic valve (51).
4. The comprehensive leakage inspection device for the reservoir hydropower station as claimed in claim 1, wherein the high-definition camera (62) and the LED (63) are electrically connected with the integrated circuit board (61).
5. The comprehensive checking device for the leakage of the reservoir hydropower station according to claim 1, wherein the housing (8) comprises a first housing (81), a second housing (82), a third housing (83), a transparent glass (84) and a fixing ring (85), the first housing (81), the second housing (82) and the third housing (83) are fixedly connected through a connecting ring (86), the left end of the third housing (83) forms a sealed housing through the transparent glass (84) and the fixing ring (85), and a sealing plate (87) is further arranged between the second housing (82) and the third housing (83).
6. The comprehensive leakage inspection device for the reservoir hydropower station according to claim 5, wherein the transparent glass (84) and the third shell (83) are fixed by the fixing ring (85), and the inner wall of the fixing ring (85) is provided with a thread buckle.
7. The comprehensive leakage inspection device for the reservoir hydropower station as claimed in claim 1, wherein a check valve (58) is further arranged at the tail end of the water outlet pipe (53).
8. The comprehensive leakage inspection device for the reservoir hydropower station according to claim 2, wherein the electro-hydraulic rod, the electromagnetic valve (51), the integrated circuit board (61) and the host (1) are electrically connected through a cable (7).
9. The comprehensive detection method for the leakage of the reservoir hydropower station according to claim 1, characterized in that: the comprehensive leakage inspection device for the reservoir hydropower station according to any one of claims 1 to 8, comprising the following steps:
a comprehensive detection method for reservoir dam surface leakage comprises the following steps:
placing a probe in a water area corresponding to a suspected leakage area of a dam, carrying out all-dimensional observation and video recording along a dam face, checking various crack and pore characteristics, and preliminarily judging possible leakage positions;
releasing a tracer agent to the possible leakage part close to the crack or the pore area, observing and recording the motion track characteristics of the tracer agent, and accurately judging the key leakage part and the seepage direction;
step three, further analyzing the dam body leakage degree through the recorded water body flow state characteristics of the upstream leakage part of the dam surface, the density and the size of pores and cracks and the like;
marking key leakage positions so as to accurately find the leakage positions in the anti-seepage treatment construction;
observing the water body flow state characteristics of the leakage part again during or after the anti-seepage treatment process is finished, and analyzing and evaluating the anti-seepage treatment effect;
a comprehensive detection method for internal leakage of a reservoir dam body comprises the following steps:
step one, forming a hole in a corresponding position of a suspected leakage area of a dam by a drilling machine;
step two, putting a perforated pipe under a detection hole with a possible hole collapse for wall protection;
placing a probe in the drilled hole, carrying out all-dimensional observation and video recording on the hole, checking various cracks, pore characteristics and water body flow state characteristics, and preliminarily judging possible leakage positions and seepage directions;
releasing the tracer agent at a fixed point of a possible leakage part, and further observing and recording the movement track characteristics of the tracer agent;
step five, comparing and analyzing the water body flow state characteristics of each part, and analyzing and judging accurate leakage parts, leakage points, leakage flow directions and leakage degrees;
and sixthly, observing the water body flow state characteristics of the leakage part again during or after the anti-seepage treatment process, and analyzing and evaluating the anti-seepage treatment effect.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114518201A (en) * | 2020-11-19 | 2022-05-20 | 西华大学 | Method for verifying container tightness by fluorescent agent tracing method |
| CN115793090A (en) * | 2023-02-10 | 2023-03-14 | 肥城新查庄地质勘查有限公司 | Tracing test method for detecting drill hole communication |
| CN115875613A (en) * | 2021-09-28 | 2023-03-31 | 中核核电运行管理有限公司 | Leakage detection method for chemical tracer at leakage point of power plant cooling water pipeline |
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2019
- 2019-04-11 CN CN201910288694.6A patent/CN111811748A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114518201A (en) * | 2020-11-19 | 2022-05-20 | 西华大学 | Method for verifying container tightness by fluorescent agent tracing method |
| CN115875613A (en) * | 2021-09-28 | 2023-03-31 | 中核核电运行管理有限公司 | Leakage detection method for chemical tracer at leakage point of power plant cooling water pipeline |
| CN115793090A (en) * | 2023-02-10 | 2023-03-14 | 肥城新查庄地质勘查有限公司 | Tracing test method for detecting drill hole communication |
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