CN204389445U - A kind of basin experimental system of Based PC CP pipeline exploding early warning monitor signal - Google Patents
A kind of basin experimental system of Based PC CP pipeline exploding early warning monitor signal Download PDFInfo
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- CN204389445U CN204389445U CN201420865844.8U CN201420865844U CN204389445U CN 204389445 U CN204389445 U CN 204389445U CN 201420865844 U CN201420865844 U CN 201420865844U CN 204389445 U CN204389445 U CN 204389445U
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- pallesthesiometer
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Abstract
A kind of basin experimental system of Based PC CP pipeline exploding early warning monitor signal.It comprises pallesthesiometer, power amplifier, sound source player, nautical receiving set, audio collection card, collecting computer and power supply; Pallesthesiometer is the audio playing apparatus be arranged in basin under the water surface, and it is connected with sound source player by power amplifier; Sound source player is sound signal playing device; Power amplifier is note amplifier, for providing enough power for pallesthesiometer; Nautical receiving set is the harvester of the underwater signal be arranged in basin under the water surface, and it is connected with collecting computer by audio collection card, and power supply is the power supply of nautical receiving set, and it is connected with nautical receiving set.The advantages such as basin experimental system adopts reasonable in design, easy to use, applicability is strong of Based PC CP pipeline exploding early warning monitor signal of the present utility model, can provide experiment support for later stage fracture of wire acoustical signal long propagation in PCCP.
Description
Technical field
The utility model belongs to PCCP road early warning and monitoring technical field, particularly relates to a kind of basin experimental system of Based PC CP pipeline exploding early warning monitor signal.
Background technology
The production of Prestressed concrete cylinder pipe and PCCP and use have very long history.To design the earliest and what manufacture Prestressed concrete cylinder pipe is French Bang Na pipeline company.To the forties in 20th century, American-European countries also starts numerous and confused exploitation and manufactures Prestressed concrete cylinder pipe.The U.S. produces as Prestressed concrete cylinder pipe maximum in the world and uses country, and the length to the modern Prestressed concrete cylinder pipe pipeline used reaches 28000KM, and wherein maximum Prestressed concrete cylinder pipe road diameter reaches 7.6 meters.
The main method of traditional Prestressed concrete cylinder pipe protection is hand inspection, as listening methods and eye-observation method.Prestressed concrete cylinder pipe fault detect also have far-field eddy/transformer coupled (RFEC/TC), based on the method such as Acoustic detection harmony fiber laser arrays (AFO) of nautical receiving set.RFEC/TC method needs the water in emptying pipe before detection, therefore can consume a large amount of man power and materials.In addition, RFEC/TC method is a kind of off-line check method, and efficiency is lower.The fine detection method of acousto-optic is a kind of real-time detection method of pin-point accuracy, but the method cost is high, and is difficult in in-service Prestressed concrete cylinder pipe road install acousto-optic fibre again, can only be applied to newly-built pipeline.Because nautical receiving set is highly sensitive to detection acoustical signal, and only need in pipeline, lay a nautical receiving set at a certain distance, so not only accuracy of detection is high but also easy for installation based on the detection method of nautical receiving set.The method has obvious advantage relative to other several detection methods, and in Prestressed concrete cylinder pipe road, damaged context of detection has application prospect very widely.
Summary of the invention
In order to solve the problem, the purpose of this utility model is the basin experimental system providing a kind of Based PC CP pipeline exploding early warning monitor signal.
In order to achieve the above object, the basin experimental system of Based PC CP pipeline exploding early warning monitor signal that the utility model provides comprises: pallesthesiometer, power amplifier, sound source player, nautical receiving set, audio collection card, collecting computer and power supply; Wherein: pallesthesiometer is the audio playing apparatus be arranged in basin under the water surface, and it is connected with sound source player by power amplifier; Sound source player is sound signal playing device, for generating the acoustical signal of experiment; Power amplifier is note amplifier, for providing enough power for pallesthesiometer; Nautical receiving set is the harvester of the underwater signal be arranged in basin under the water surface, and it is connected with collecting computer by audio collection card, and power supply is the power supply of nautical receiving set, and it is connected with nautical receiving set.
The JX00A type pallesthesiometer that described pallesthesiometer selects Jinhua, Zhejiang sky positive electron company limited to produce, this loudspeaker is made up of the cylinder of two diameter * height 87mm, and weight is 1.6 kilograms, sound source number 3, and Sounnd source direction number is 2.
Described sound source player adopts a computing machine with sound card.
Described audio collection card is usb audio capture card, and it is connected with collecting computer by USB interface.
The advantages such as basin experimental system adopts reasonable in design, easy to use, applicability is strong of the Based PC CP pipeline exploding early warning monitor signal that the utility model provides, can provide experiment support for later stage fracture of wire acoustical signal long propagation in PCCP.
Accompanying drawing explanation
The structural representation of the basin experimental system of the Based PC CP pipeline exploding early warning monitor signal that Fig. 1 provides for the utility model.
Fig. 2 is the fracture of wire waveform after original fracture of wire acoustical signal waveform and filtering.
Fig. 3 is fracture of wire acoustic signal propagation die-away curve figure.
Embodiment
Be described in detail below in conjunction with the basin experimental system of the drawings and specific embodiments to the Based PC CP pipeline exploding early warning monitor signal that the utility model provides.
For the situation of prior art, the utility model people is after having made a large amount of early-stage Study to PCCP, propose the PCCP yarn break inspect system based on nautical receiving set, its principle detects the acoustical signal real-time online in PCCP road, identify local flaw signal wherein, utilize local flaw signal to realize the early warning of PCCP road booster; Monitor and identify local flaw signal, just first must rest in propagating characteristic and the rule of acoustical signal in PCCP road, although the environment of basin is different with the PCCP road environment of reality, but basin also has certain representativeness, in basin experiment, mainly for following two schemes, the first, the die-away curve of fracture of wire acoustical signal in basin of measure analog; The second, the propagation attenuation curve of single-frequency sound signal in basin of measure analog.
As shown in Figure 1, the basin experimental system of Based PC CP pipeline exploding early warning monitor signal that the utility model provides comprises: pallesthesiometer 1, power amplifier 2, sound source player 3, nautical receiving set 4, audio collection card 5, collecting computer 6 and power supply 7; Wherein: pallesthesiometer 1 is for being arranged on the audio playing apparatus in basin under the water surface 8, and it is connected with sound source player 3 by power amplifier 2; Sound source player 3 is sound signal playing device, for generating the acoustical signal of experiment; Power amplifier 2 is note amplifier, for providing enough power for pallesthesiometer 1; Nautical receiving set 4 is for being arranged on the harvester of the underwater signal in basin under the water surface 8, and it is connected with collecting computer 6 by audio collection card 5, and power supply 7 is the power supply of nautical receiving set 4, and it is connected with nautical receiving set 4;
Pallesthesiometer 1, power amplifier 2 and sound source player 3 is the transmitting portion of acoustical signal, and nautical receiving set 4, audio collection card 5, collecting computer 6 and power supply 7 is the receiving unit of acoustical signal;
The transmission of acoustical signal realizes mainly through power amplifier 2 and pallesthesiometer 1, and the collection of acoustical signal is mainly realized by audio collection card 5;
The JX00A type pallesthesiometer that described pallesthesiometer 1 selects Jinhua, Zhejiang sky positive electron company limited to produce, this loudspeaker is made up of the cylinder of two diameter * height 87mm, and weight is 1.6 kilograms, sound source number 3, and Sounnd source direction number is 2.
Described sound source player 3 adopts a computing machine with sound card.
Described audio collection card 5 is usb audio capture card, and it is connected with collecting computer 6 by USB interface.
The experimental result of the basin experimental system of the Based PC CP pipeline exploding early warning monitor signal that the utility model provides:
First play fracture of wire acoustical signal with pallesthesiometer 1 in experiment, and measure fracture of wire acoustical signal at the diverse location of basin, original fracture of wire acoustical signal time-domain diagram and frequency domain figure are as shown in Figure 2;
As we can see from the figure, the effective time of the true fracture of wire acoustical signal of PCCP is very short, only has about 200 milliseconds.
Table 1 reflects the result that fracture of wire acoustical signal is propagated in basin, as can be seen from Table 1, although fracture of wire acoustical signal is propagated after 100 meters in basin, signal amplitude has and decays largely, and fracture of wire acoustical signal relative to other sound signal still clearly.
The result that table 1 fracture of wire acoustical signal is propagated in basin
Fig. 3 is fracture of wire acoustic signal propagation die-away curve figure, acoustic signal propagation die-away curve explanation as shown in Figure 3, first acoustical signal is all have very large decay within the scope of the initial 10-20 rice propagated, although also have decay in the scope of 20 meters to 100 meters, the amplitude of its decay is smaller.
The result of basin experiment shows, fracture of wire acoustical signal is after propagation 100 meters, although the amplitude of acoustical signal has larger decay, the signal to noise ratio (S/N ratio) of fracture of wire acoustical signal still clearly, therefore for later stage fracture of wire acoustical signal long propagation in PCCP provides experiment support.
Claims (4)
1. a basin experimental system for Based PC CP pipeline exploding early warning monitor signal, is characterized in that: the basin experimental system of described Based PC CP pipeline exploding early warning monitor signal comprises:
Pallesthesiometer (1), power amplifier (2), sound source player (3), nautical receiving set (4), audio collection card (5), collecting computer (6) and power supply (7); Wherein: pallesthesiometer (1) is for being arranged on the audio playing apparatus under the water surface in basin (8), and it is connected with sound source player (3) by power amplifier (2); Sound source player (3) is sound signal playing device, for generating the acoustical signal of experiment; Power amplifier (2) is note amplifier, for providing enough power for pallesthesiometer (1); Nautical receiving set (4) is for being arranged on the harvester of the underwater signal under the water surface in basin (8), it is connected with collecting computer (6) by audio collection card (5), the power supply that power supply (7) is nautical receiving set (4), it is connected with nautical receiving set (4).
2. the basin experimental system of Based PC CP pipeline exploding early warning monitor signal according to claim 1, it is characterized in that: the JX00A type pallesthesiometer that described pallesthesiometer (1) selects Jinhua, Zhejiang sky positive electron company limited to produce, this loudspeaker is made up of the cylinder of two diameter * height 87mm, weight is 1.6 kilograms, sound source number 3, Sounnd source direction number is 2.
3. the basin experimental system of Based PC CP pipeline exploding early warning monitor signal according to claim 1, is characterized in that: described sound source player (3) adopts a computing machine with sound card.
4. the basin experimental system of Based PC CP pipeline exploding early warning monitor signal according to claim 1, it is characterized in that: described audio collection card (5) is usb audio capture card, and it is connected with collecting computer (6) by USB interface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420865844.8U CN204389445U (en) | 2014-12-31 | 2014-12-31 | A kind of basin experimental system of Based PC CP pipeline exploding early warning monitor signal |
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| CN201420865844.8U CN204389445U (en) | 2014-12-31 | 2014-12-31 | A kind of basin experimental system of Based PC CP pipeline exploding early warning monitor signal |
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| CN204389445U true CN204389445U (en) | 2015-06-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569153A (en) * | 2014-12-31 | 2015-04-29 | 天津大学 | Ship pool experiment system based on PCCP failure early-warning and monitoring signals |
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2014
- 2014-12-31 CN CN201420865844.8U patent/CN204389445U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569153A (en) * | 2014-12-31 | 2015-04-29 | 天津大学 | Ship pool experiment system based on PCCP failure early-warning and monitoring signals |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20191231 |
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| CF01 | Termination of patent right due to non-payment of annual fee |