CN103592462B - Reservoir leakage doppler detector three-dimensional hydrophone array is popped one's head in - Google Patents
Reservoir leakage doppler detector three-dimensional hydrophone array is popped one's head in Download PDFInfo
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- CN103592462B CN103592462B CN201310556307.5A CN201310556307A CN103592462B CN 103592462 B CN103592462 B CN 103592462B CN 201310556307 A CN201310556307 A CN 201310556307A CN 103592462 B CN103592462 B CN 103592462B
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Abstract
The present invention relates to a kind of reservoir leakage doppler detector three-dimensional hydrophone array probe, hydrophone array is formed by three groups of nautical receiving sets, adopt six logical plastic pipes each connection two sections of plastic pipes on X, Y, Z three-dimensional, two nautical receiving sets often organized are arranged on two sections of plastic cement tube walls in the same way; Often to organize in two nautical receiving sets one for launching, another is for receiving; Launch the transmission circuit module excitation ultrasound ripple signal of nautical receiving set by reservoir leakage doppler detector, receiving hydrophone receives propagates through water body the ultrasonic signal of coming, the ultrasonic signal from mutually orthogonal three directions is received by three-dimensional hydrophone array, directly record the water volume flow rate in three directions, and be reduced to the true flow velocity of water body.The present invention is based on the detection instrument of Doppler effect principle, for measuring seepage flow field, determining leak location, have structure simple, the feature that detection accuracy is high, speed is fast, easy to operate, can provide reliable technical support for the seepage treatment of reservoir.
Description
Technical field
The present invention relates to a kind of vitals of detecting devices, specifically a kind of three-dimensional hydrophone array probe be applied on reservoir leakage detection instrument, it is the sensor special in direct detection reservoir leakage source, Main Function has been that reservoir leakage detection instrument transmits and receives hyperacoustic function, for obtaining storehouse water flow velocity parameter, determine the distribution in reservoir leakage flow field.
Background technology
Current China has become water conservancy and hydropower big country in the world, and the dam built up has more than 8.7 ten thousand, but the whole nation still has more than 40,000 medium and small reservoirs to there is the dangerous problem of disease at present.A lot of reservoir because of seepage of dam dare not retaining, allow water resource flowing away in vain, also want groundwater abstraction when needs water, define huge waste.
Cause the reason of seepage of dam numerous, which increase the difficulty of dangerously weak reseroirs retrofit work, active demand can detect the method and technology of leak location.The leakage detection of reservoir is generally utilize the method for some physical prospectings to detect, and conventional self-potential method, mise-a-la-masse method, temperature field method etc., coordinate some additive methods also can solve some problems.But a lot of leakage problems is difficult to utilize these methods to detect, main cause: one is because conventional geophysical prospecting method is all indirect measurement method, directly can not obtain seepage flow field data, two is because the reason of seepage of dam is a lot, may be the foundation seepage, dam seepage etc. of leakage around dam, dam, add the diversity of dam structure and antiseepage, aforesaid certain methods may be felt simply helpless; In addition, even if leak location have found, processing, how is the effect so processed? therefore need to search out leak location from source, and whether the seepage treatment can monitoring this position continuously puts in place.Given this, a kind of directly measurement of research and development seepage flow field, and accurately, detection instrument that is quick and easy, low cost is extremely badly in need of, and also seems particularly important.
Summary of the invention
The object of the invention is to account for dangerously weak reseroirs ratio for current seepage reservoir high, the problems such as leak location detection difficulty is large, cost is high, low precision, and provide a kind of based on Doppler effect principle, utilize ultrasound wave under the impact of water body flow, the characteristic of meeting occurrence frequency change in communication process, for obtaining storehouse water flow velocity parameter, determining the distribution in reservoir leakage flow field, determining the three-dimensional hydrophone array probe that the detection instrument of leak location is special.
For achieving the above object, the technical scheme that the present invention takes is: provide a kind of reservoir leakage doppler detector three-dimensional hydrophone array to pop one's head in, comprise nautical receiving set, and described nautical receiving set has three groups of composition hydrophone arrays; Adopt mutually perpendicular six logical plastic pipes each connection two sections of plastic pipes on X, Y, Z three-dimensional, on two sections of plastic cement tube walls that each group has two nautical receiving sets to be arranged on respectively in the same way, the line of two nautical receiving sets and the axes intersect of place plastic pipe; Each group two nautical receiving sets one of them for launch, another for receive; Described transmitting nautical receiving set is by the transmission circuit module excitation ultrasound ripple signal of reservoir leakage doppler detector, and receiving hydrophone receives and propagates the ultrasonic signal of coming through water body, is realized the three-dimensional sample of ultrasonic signal by three-dimensional hydrophone array.
Three-dimensional hydrophone array probe of the present invention is provided with the interface connecting transmitting, reception, control circuit, two hydrophone structure of each group are identical, transmitting and receiving can be carried out exchange under the instruction of the total control circuit of detection instrument, the actual measurement in each direction be the party upwards one group of nautical receiving set launch and accept exchange measure comprehensive.
The centre frequency of nautical receiving set of the present invention is 1MHz.
Of the present invention is respectively 10 ~ 20cm to plastic pipe diameter d, and after often connecting to plastic pipe, total length is 25 ~ 50cm, and plastic pipe is made up of low-density low speed material.
The measuring principle of three-dimensional hydrophone array probe of the present invention is: the present invention is based on underwater Doppler leakage detection technology, utilize the Doppler effect of sound wave in communication process: ripple receive frequency when wave source shifts to recipient uprises, and at wave source away from receive frequency step-down during recipient.When recipient move, wave source also can obtain same conclusion time motionless.According to motion composition, when wave source and recipient are fixed on the place of geo-stationary, and medium moves between wave source and recipient, and corresponding change also occurs the frequency of ripple in communication process.During water body flow, the ultrasound wave that in three-dimensional hydrophone array, the transmitting nautical receiving set of each group sends, in the propagation of water body is by same group, receiving hydrophone receives, when current by launch nautical receiving set flow to receiving hydrophone time, the frequency received diminishes, when current flow to transmitting nautical receiving set by receiving hydrophone, the frequency received becomes large; By the frequency of sound wave variable quantity between testing and launching nautical receiving set and receiving hydrophone, just can determine speed and the leakage scenarios of current, consider that water (flow) direction can not just in time be on the line of sending and receiving nautical receiving set, therefore the nautical receiving set composition array of three groups mutually vertical is adopted, automatically by the water flow field to test all directions.Probe of the present invention obtains ultrasonic signal and carries out Analysis of doppler effect via the software kit of the built-in one-chip computer of reservoir leakage doppler detector to signal on three-dimensional, obtain the water volume flow rate in three directions respectively, and be finally reduced to the true flow velocity of water body.
The reservoir leakage doppler detector three-dimensional hydrophone array of the present invention effect had of popping one's head in is:
1, the Doppler effect principle produced when the present invention proposes to propagate in current water based on ultrasound wave first, for detecting ultrasonic ripple in current water medium frequency and the change of time, measure seepage flow field, determine leak location, the seepage flow for low discharge also can accurately be located.
2, sensor sensitivity of the present invention is high, simple to operate, it is the sensor special in direct detection reservoir leakage source, be suitable for the various situation such as foundation seepage, dam seepage of leakage around dam, dam, fundamentally solve the detection problem of seepage reservoir in reinforcement problem.
3, reservoir leakage doppler detector three-dimensional hydrophone array probe of the present invention is easy to use, is beneficial to popularization.
Accompanying drawing explanation
Fig. 1 is the three-dimensional hydrophone array probe perspective view of reservoir leakage doppler detector of the present invention.
Fig. 2 is three-dimensional hydrophone array probe plane structure schematic front view of the present invention.
Fig. 3 is the laying schematic diagram of array probe X of the present invention to one group of nautical receiving set.
In above-mentioned figure: 1-X is to nautical receiving set A, 2-X is to nautical receiving set B, 3-Y to nautical receiving set A, 4-Y to nautical receiving set B, 5-Z is to nautical receiving set A, 6-Z is to nautical receiving set B, 7-X to plastic pipe, and 8-Y is to plastic pipe, 9-Z is to plastic pipe, 10-six leads to plastic pipe, the diameter of d-plastic pipe, and CD-two nautical receiving sets are in the horizontal range of axis.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment 1: the three-dimensional hydrophone array probe that the invention provides a kind of reservoir leakage doppler detector, its structure as shown in Figure 1, 2, probe of the present invention is the sensor special in direct detection reservoir leakage source, and Main Function has been that reservoir leakage detection instrument transmits and receives hyperacoustic function.
Three-dimensional hydrophone array probe of the present invention has three groups of nautical receiving set composition hydrophone arrays; Adopt that mutually perpendicular six logical plastic pipes 10 are each on X, Y, Z three-dimensional connects two sections of plastic pipes, in Fig. 2, AA ', BB ' are respectively the cross section structure of Z-direction plastic pipe and X is arranged on the cross section structure in six logical plastic pipes 10 to plastic pipe.On two sections of plastic cement tube walls that in hydrophone array, each group has two nautical receiving sets to be arranged on respectively in the same way, as X is arranged on X on two sections of tube walls of plastic pipe 7 respectively to nautical receiving set A1 and X to nautical receiving set B2, the relative position of two nautical receiving sets on tube wall remains unchanged, the line of two nautical receiving sets and the axes intersect of place plastic pipe, see Fig. 3.
Described plastic pipe is made up of low-density low speed material, plastic pipe diameter d is 10cm, after often connecting to plastic pipe, total length is 40cm, and two nautical receiving sets, when the horizontal range CD of axis is 16cm, can makes the signal of one group of nautical receiving set transmit and receive performance and reach optimum.Same Y-direction nautical receiving set A3 and Y-direction nautical receiving set B4 is arranged on two sections of Y-direction plastic pipe 8 tube walls respectively, and Z-direction nautical receiving set A5 and Z-direction nautical receiving set B6 is arranged on two sections of Z-direction plastic pipe 9 tube walls respectively.
Each group two nautical receiving sets in the present embodiment, wherein X to nautical receiving set A1 and X to nautical receiving set B2, Y-direction nautical receiving set A3 and Y-direction nautical receiving set B4, Z-direction nautical receiving set A5 and Z-direction nautical receiving set B6 match and use, often pair of mutual use of nautical receiving set transmitting and receiving, namely at a measurement point, often pair of nautical receiving set will gather two secondary data.Described transmitting nautical receiving set launches ultrasonic signal by the transmission circuit module of reservoir leakage doppler detector, the hyperacoustic centre frequency exciting nautical receiving set to send is 1MHz, the data sample rates of every passage is 10Msps, by total control circuit of reservoir leakage doppler detector by control each to one group of nautical receiving set in transmitting nautical receiving set launch ultrasonic signal, received by receiving hydrophone and propagate the ultrasonic signal of coming through water body, when the ultrasound data sampling in a direction is complete, the three-dimensional sample of the ultrasonic signal in three directions has been gathered successively according to the instruction of total control circuit.
Hydrophone array column three-dimensional probe of the present invention is provided with the interface connecting transmitting, reception, control circuit, and two hydrophone structure of each group are identical, and two nautical receiving sets can carry out transmitting and receiving and exchange under the instruction of the total control circuit of instrument controls.
Embodiment 2: the three-dimensional hydrophone array probe that the invention provides a kind of reservoir leakage doppler detector, its structure is substantially the same manner as Example 1, different just plastic pipe diameter d is 20cm, after often connecting to plastic pipe, total length is 50cm, and two nautical receiving sets are 30cm at the horizontal range CD of axis.
The undeclared part of the present invention all can adopt existing techniques in realizing, repeats no more here.
Claims (4)
1. a reservoir leakage doppler detector three-dimensional hydrophone array probe, comprises nautical receiving set, it is characterized in that: described nautical receiving set has three groups of composition hydrophone arrays; Adopt mutually perpendicular six logical plastic pipes each connection two sections of plastic pipes on X, Y, Z three-dimensional, on two sections of plastic cement tube walls that each group has two nautical receiving sets to be arranged on respectively in the same way, the line of two nautical receiving sets and the axes intersect of place plastic pipe; Each group two nautical receiving sets one of them for launch, another for receive; Described transmitting nautical receiving set is by the transmission circuit module excitation ultrasound ripple signal of reservoir leakage doppler detector, and receiving hydrophone receives and propagates the ultrasonic signal of coming through water body, is realized the three-dimensional sample of ultrasonic signal by three-dimensional hydrophone array.
2. reservoir leakage doppler detector three-dimensional hydrophone array probe according to claim 1, it is characterized in that: described three-dimensional hydrophone array probe is provided with the interface connecting transmitting, reception, control circuit, two hydrophone structure of each group are identical, transmitting and receiving can be carried out exchange under the instruction of the total control circuit of detection instrument, the actual measurement in each direction be the party upwards one group of nautical receiving set launch and accept exchange measure comprehensive.
3. reservoir leakage doppler detector three-dimensional hydrophone array probe according to claim 1, is characterized in that: the centre frequency of described nautical receiving set is 1MHz.
4. reservoir leakage doppler detector three-dimensional hydrophone array probe according to claim 1, it is characterized in that: described each to plastic pipe diameter d be 10 ~ 20cm, after often connecting to plastic pipe, total length is 25 ~ 50cm, and plastic pipe is made up of low-density low speed material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310556307.5A CN103592462B (en) | 2013-11-11 | 2013-11-11 | Reservoir leakage doppler detector three-dimensional hydrophone array is popped one's head in |
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| CN201310556307.5A CN103592462B (en) | 2013-11-11 | 2013-11-11 | Reservoir leakage doppler detector three-dimensional hydrophone array is popped one's head in |
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| CN103592462A CN103592462A (en) | 2014-02-19 |
| CN103592462B true CN103592462B (en) | 2015-08-05 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103836346A (en) * | 2014-02-24 | 2014-06-04 | 中国海洋石油总公司 | Underwater natural gas pipeline connector leakage monitoring system |
| EP3298379A1 (en) * | 2015-05-20 | 2018-03-28 | Saudi Arabian Oil Company | Sampling techniques to detect hydrocarbon seepage |
| CN108982316B (en) * | 2018-06-14 | 2020-11-27 | 河海大学文天学院 | Dam back surface concrete surface seepage detection system and method based on unmanned aerial vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4438652A (en) * | 1981-03-06 | 1984-03-27 | Hitachi, Ltd. | Ultrasonic Doppler flowmeter |
| CN101382562A (en) * | 2008-10-21 | 2009-03-11 | 上海第二工业大学 | Seven-degree of freedom flow speed measurement method with common adaptability |
| CN103226198A (en) * | 2013-03-14 | 2013-07-31 | 华南理工大学 | Doppler-effect-based underwater target positioning method and device |
-
2013
- 2013-11-11 CN CN201310556307.5A patent/CN103592462B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4438652A (en) * | 1981-03-06 | 1984-03-27 | Hitachi, Ltd. | Ultrasonic Doppler flowmeter |
| CN101382562A (en) * | 2008-10-21 | 2009-03-11 | 上海第二工业大学 | Seven-degree of freedom flow speed measurement method with common adaptability |
| CN103226198A (en) * | 2013-03-14 | 2013-07-31 | 华南理工大学 | Doppler-effect-based underwater target positioning method and device |
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