CN203743866U - Leakage monitoring system for underwater natural gas pipeline connector - Google Patents
Leakage monitoring system for underwater natural gas pipeline connector Download PDFInfo
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- CN203743866U CN203743866U CN201420078578.4U CN201420078578U CN203743866U CN 203743866 U CN203743866 U CN 203743866U CN 201420078578 U CN201420078578 U CN 201420078578U CN 203743866 U CN203743866 U CN 203743866U
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Abstract
The utility model relates to a leakage monitoring system for an underwater natural gas pipeline connector. The leakage monitoring system for the underwater natural gas pipeline connector is characterized by comprising a plurality of underwater sensing subsystems and an overwater monitoring device, wherein each underwater sensing subsystem comprises an external frame, a plurality of hydrophones and an electronic bin are arranged on each external frame, a signal front amplifying plate, a data acquisition plate, a USB data acquisition card and a first optical fiber transceiver are connected into each electronic bin in sequence, the overwater monitoring device comprises an industrial personal computer and a plurality of second optical fiber transceivers connected with the first optical fiber transceivers correspondingly through an optical cable, the industrial personal computer is provided with an operation display interface, and the industrial personal computer displays alarm signals of each hydrophone located at the corresponding position and the leakage position through the operation display interface. The leakage monitoring system can be widely applied to the field of leakage of the underwater natural gas pipeline connectors.
Description
Technical field
The utility model relates to a kind of leakage monitoring system, particularly about one natural gas line joint leakage monitoring system under water.
Background technique
Along with setting up of pipeline, submarine pipeline joint leak detection technology also obtains development, develop into comparatively complicated computer software method from the simplest manual patrol, detect from land and develop into seabed detection, even utilize aircraft to detect aloft.
The leak hunting method of pipeline has multiple classification, wherein mainly comprises following several method:
1, direct observational method: direct observational method is to occur by directly submarine pipeline joint being observed to have judged whether to leak, and is to carry out outward appearance Leak testtion by diver or remote-controlled vehicle (ROV, Remote-operated vehicle).Direct observational method is not easy to find very little leakage point, and the environmental conditions such as testing result and the depth of water and detection person's technical merit has compared with Important Relations.In general, the depth of water is available diver between 0～50m, and darker situation is used manned submarine or remote-controlled vehicle.
2, the water surface monitors method: be positioned at the pipeline of neritic area, because water is more shallow, the material leaking out in submarine pipeline joint generally can reflect to some extent at the conduit upper water surface, so can adopt the method that monitors the water surface above laying pipeline to hunt leak to shallow sea submarine pipeline.This water surface monitors that method is simple, and still, it can only be effective to larger leakage, helpless to little leakage, and testing process need to be carried out in the time that weather condition is good.The parameter such as current, density during according to leakage, estimation leak position.The precision of this method is lower, can only judge roughly, is generally difficult to meet industrial requirements.
3, Fibre Optical Sensor detection method: Fibre Optical Sensor detection method is a focus of development in recent years, it is the variation that can cause ambient temperature because of the material leakage of carrying in pipeline by the method that optical fiber transducer detecting tube road and pipe coupling are leaked, therefore utilize the temperature distribution of distributed optical fiber temperature sensor continuous measurement along pipeline, when the temperature variation of pipeline exceedes certain scope, just can judge leakage has occurred.In addition, along with the development of various distributed fiberoptic sensors, following can realization utilizes temperature, pressure, flow, the tube wall stress of one or a few optical fiber to medium in natural gas line to carry out distributed on-line measurement, this will have application potential in pipe monitoring system, but this leak detection system cost is very expensive, and construction maintenance inconvenience.
4, passive sonar monitoring method: for pipe coupling place, can use passive sonar monitoring technique, monitor the leakage sound of bubble under water, thereby reach the object of real-time leak detection, this kind equipment often combines with mechanical fault diagnosis equipment.Because having, passive sonar monitoring method is easy to lay, and highly sensitive and can recording voice data, thus make the advantages such as type that operator can secondary judgement leaks, become main developing direction.But the equipment of present passive sonar monitoring method, in application, exists and leaks the shortcoming that positioning resolution is not high enough, monitoring data transmission distance is far away not, has limited the development of passive sonar monitoring method.Taking the leakage monitoring system under water of the NAXYS company of Norway as example, its Acoustic Leak Detection device is installed in the zone line of seabed manifold, it is divided into 15 regions by the top view plane of seabed manifold and monitors, that is to say, its horizontal angular resolution is 360/15=24 degree, and so coarse resolution is difficult to seabed to leak and effectively monitor.
Summary of the invention
For the problems referred to above, the purpose of this utility model is to provide a kind ofly can carry out damage check timely and leak the high-resolution joint of the natural gas line under water leakage monitoring system of location pipe coupling.
For achieving the above object, the utility model is taked following technological scheme: natural gas line joint leakage monitoring system under water, is characterized in that: it comprises some underwater sensing subtense angles and a supervisory device waterborne, described in each, underwater sensing subtense angle comprises an external frame, is provided with some hydrophorces and an electronics storehouse in described external frame, in described electronics storehouse, be connected with a signal front amplifying board, a data acquisition board, a usb data capture card and one first Fiber Optical Transceiver in turn, described supervisory device waterborne comprises a process control machine and some the second Fiber Optical Transceivers that the first Fiber Optical Transceiver connects one to one by optical cable and described in each, and described process control machine has an operation display interface, the analogue signal that described signal front amplifying board connects respectively and each described hydrophorce is transmitted, after amplifying filtering noise, send described data acquisition board to, described data acquisition board converts analogue signal to digital data transmission to described usb data capture card, described usb data capture card is converted into network protocol message by digital signal and sends described the first Fiber Optical Transceiver to, described the first Fiber Optical Transceiver by network protocol message convert to optical signal by optical cable transmission to the second corresponding Fiber Optical Transceiver, described the second Fiber Optical Transceiver converts optical signal to electric signal transmission to described process control machine, alarm signal and leak position that described process control machine obtains hydrophorce described in each position by its operation display interface.
Described external frame comprises two semi-circlees of cross weld, the bottom welding of semi-circle annulus once described in two, described in above described lower annulus two, on semicircle support, weld annulus on, the circle centre position of annulus crosses and is welded with the pole of the described two halves circular arc of some connections on described, described in each, on pole, be provided with some described hydrophorces, and the cross described circle centre position bottom of welding, the described electronics storehouse place of being arranged on.
The quantity of described pole is more than five.
Described usb data capture card adopts PXI8800 data collecting card.
Described the first Fiber Optical Transceiver and described the second Fiber Optical Transceiver adopt Altay PCI2600 Fiber Optical Transceiver.
Described process control machine adopts and grinds auspicious IPC-810B process control machine.
The utility model is owing to taking above technological scheme, it has the following advantages: 1, the utility model is due to some underwater sensing subtense angles being set under water, and in each underwater sensing subtense angle, be provided with one by the external frame that on two semi-circlees,, annulus, once annulus and some poles are welded, some hydrophorces are set in external frame, therefore the utility model can pass through the leakage monitoring of each underwater sensing subtense angle within the scope of 200 meters of left and right of diameter, leak supervision is carried out in whole region by multiple underwater sensing subtense angles simultaneously.2, adopt external frame of the present utility model not only can monitor leaking, can also monitor the operating mode of the mechanical structure of periphery.3, the utility model, by the Array Signal Processing algorithm of operation interface, has improved resolution and the precision of monitoring, even therefore less leakage also can monitor, makes horizontal error be less than 3 ° simultaneously, and vertical error is less than 5 °, leaks rate of false alarm and is less than 5%.4, the utility model is owing to adopting optical cable to transmit, therefore monitoring data transmission distance is at least 5km, effectively ensure the fidelity transmission of monitor signal, solved passive sonar and leaked the shortcoming that positioning resolution is not high enough, monitoring data transmission distance is far away not.The utility model can be widely used in natural gas line joint under water and leak field.
Brief description of the drawings
Fig. 1 is the utility model structural representation
Fig. 2 is the utility model underwater sensing subtense angle schematic diagram
Fig. 3 adopts the utility model underwater noise spatial sound field pattern schematic diagram
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
As shown in Figure 1, the utility model comprises some underwater sensing subtense angles 1 and a supervisory device 2 waterborne.
As shown in Figure 2, each underwater sensing subtense angle 1 comprises an external frame 11, external frame 11 comprises two semi-circlees 111 of cross weld, at the bottom welding annulus 112 once of two halves circular arc 111, on the semi-circle 111 above lower annulus 112, weld annulus 113 on, be welded with five poles 114 that are connected semicircle support 111 in the center of circle of upper annulus 113 substantially horizontal and Vertical direction, on five poles 114, be provided with some hydrophorces 12, hydrophorce 12 can carry out three-dimensional identification location to leaking bubble sound source, and convert the sound signal of collection to analogue signal and transmit.
As shown in Figure 1 and Figure 2, the bottom of each pole 114 joints in each external frame 1 arranges an electronics storehouse 13, and electronics storehouse 13 comprises a cavity 131, cavity 131 is that a length of side is the square body of 0.3m left and right, heavily about 10kg, cavity 131 does watertight processing, is applicable to the 1500m depth of water.In cavity 131, be provided with the signal front amplifying board 132, data acquisition board 133, usb data capture card 134 and the first Fiber Optical Transceiver 135 that connect successively.Above-mentioned each hydrophorce 12 is electrically connected respectively the signal front amplifying board 132 in electronics storehouse 13.Analogue signal that signal front amplifying board 132 transmits each hydrophorce 12 is respectively amplified and by noise filtering, send useful signal to data acquisition board 133, data acquisition board 133 converts analogue signal to digital data transmission to usb data capture card 134, usb data capture card 134 is converted into network protocol message by digital signal and sends the first Fiber Optical Transceiver 135, the first Fiber Optical Transceivers 135 to and convert network protocol message to optical signal.
As shown in Figure 1, supervisory device 2 waterborne comprises some the second Fiber Optical Transceivers 21 and a process control machine 22, and process control machine 22 has an operation display interface 221, wherein operates display interface 221 and adopts Array Signal Processing algorithm.Each second Fiber Optical Transceiver 21 is electrically connected respectively process control machine 22, each second Fiber Optical Transceiver 21 connects and its first Fiber Optical Transceiver 135 one to one by optical cable 3 respectively, and the optical signal that the first Fiber Optical Transceiver 135 is transmitted converts electric signal transmission to process control machine 22, process control machine 22 can show by its operation display interface 221 alarm signal and the leak position that each position hydrophorce 12 sends.
Above-mentioned usb data capture card 134 can adopt PXI8800 data collecting card, and the first Fiber Optical Transceiver 135 and the second Fiber Optical Transceiver 21 can adopt Altay PCI2600 Fiber Optical Transceiver, and process control machine 22 can adopt and grind auspicious IPC-810B process control machine.
As shown in Figure 3, under water in spatial noise sound field distribution schematic diagram, X-axis represents the scanning angle that level is circumferential, Y-axis represents the scanning angle of Vertical direction, a little less than Z axis represents the sound pressure of sound, peak value can give expression to the intensity of sound brightly, can judge the angle orientation that leaks sound source by whole coordinate axes.Wherein, X-axis is 0 ° to 360 °, and the level that represents is circumferentially with respect to the angular orientation in positive north, and Y-axis is-90 ° to+90 °, represents that following 90 ° of horizontal plane arrives the above water Vertical direction angle of 90 °.By reading the circumferential angle of Z axis level and the Vertical direction angle at peak value place, can infer the angular orientation of leaking sound source.
In above-described embodiment, on five poles 114 of underwater sensing subtense angle 1, hydrophorce 12 is all installed, has been formed First Five-Year Plan arm sensor array.Certainly the quantity of pole 114 still can change, and such as the quantity of pole is more than five, one end of each pole 114 all crosses to the center of circle of upper annulus 113, and then forms six arms, seven arms ... sensor array.
In above-described embodiment, the search coverage radius of underwater sensing subtense angle 1 is at least 200m, and the horizontal error forming is like this less than 3 °, and vertical error is less than 5 °, leaks rate of false alarm and is less than 5%, and signal transmission distance is 5km at least.The utility model can also be monitored the operating mode of the mechanical structure of periphery, and the work condition inspection process of the mechanical structure to periphery is with identical to pipe coupling monitor procedure, therefore no longer describe in detail.
The various embodiments described above are only for illustrating the utility model; wherein the structure of each parts, Placement and preparation process etc. all can change to some extent; every equivalents of carrying out on the basis of technical solutions of the utility model and improvement, all should not get rid of outside protection domain of the present utility model.
Claims (9)
1. a natural gas line joint leakage monitoring system under water, is characterized in that: it comprises some underwater sensing subtense angles and a supervisory device waterborne;
Described in each, underwater sensing subtense angle comprises an external frame, is provided with some hydrophorces and an electronics storehouse in described external frame; In described electronics storehouse, be connected with a signal front amplifying board, a data acquisition board, a usb data capture card and one first Fiber Optical Transceiver in turn;
Described supervisory device waterborne comprises a process control machine and some the second Fiber Optical Transceivers that the first Fiber Optical Transceiver connects one to one by optical cable and described in each, and described process control machine has an operation display interface;
The analogue signal that described signal front amplifying board connects respectively and each described hydrophorce is transmitted, after amplifying filtering noise, send described data acquisition board to, described data acquisition board converts analogue signal to digital data transmission to described usb data capture card, described usb data capture card is converted into network protocol message by digital signal and sends described the first Fiber Optical Transceiver to, described the first Fiber Optical Transceiver by network protocol message convert to optical signal by optical cable transmission to the second corresponding Fiber Optical Transceiver, described the second Fiber Optical Transceiver converts optical signal to electric signal transmission to described process control machine, alarm signal and leak position that described process control machine obtains hydrophorce described in each position by its operation display interface.
2. the joint of natural gas line under water leakage monitoring system as claimed in claim 1, it is characterized in that: described external frame comprises two semi-circlees of cross weld, the bottom welding of semi-circle annulus once described in two, described in above described lower annulus two, on semicircle support, weld annulus on, the circle centre position of annulus crosses and is welded with the pole of the described two halves circular arc of some connections on described, described in each, on pole, be provided with some described hydrophorces, and the cross described circle centre position bottom of welding, the described electronics storehouse place of being arranged on.
3. the joint of natural gas line under water leakage monitoring system as claimed in claim 2, is characterized in that: the quantity of described pole is more than five.
4. the joint of the natural gas line under water leakage monitoring system as described in claim 1 or 2 or 3, is characterized in that: described usb data capture card adopts PXI8800 data collecting card.
5. the joint of the natural gas line under water leakage monitoring system as described in claim 1 or 2 or 3, is characterized in that: described the first Fiber Optical Transceiver and described the second Fiber Optical Transceiver adopt Altay PCI2600 Fiber Optical Transceiver.
6. the joint of natural gas line under water leakage monitoring system as claimed in claim 4, is characterized in that: described the first Fiber Optical Transceiver and described the second Fiber Optical Transceiver adopt Altay PCI2600 Fiber Optical Transceiver.
7. the joint of the natural gas line under water leakage monitoring system as described in claim 1 or 2 or 3 or 6, is characterized in that: described process control machine adopts and grinds auspicious IPC-810B process control machine.
8. the joint of natural gas line under water leakage monitoring system as claimed in claim 4, is characterized in that: described process control machine adopts and grinds auspicious IPC-810B process control machine.
9. the joint of natural gas line under water leakage monitoring system as claimed in claim 5, is characterized in that: described process control machine adopts and grinds auspicious IPC-810B process control machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420078578.4U CN203743866U (en) | 2014-02-24 | 2014-02-24 | Leakage monitoring system for underwater natural gas pipeline connector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420078578.4U CN203743866U (en) | 2014-02-24 | 2014-02-24 | Leakage monitoring system for underwater natural gas pipeline connector |
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| CN203743866U true CN203743866U (en) | 2014-07-30 |
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| CN201420078578.4U Expired - Fee Related CN203743866U (en) | 2014-02-24 | 2014-02-24 | Leakage monitoring system for underwater natural gas pipeline connector |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104595728A (en) * | 2015-01-25 | 2015-05-06 | 上海市政工程设计研究总院（集团）有限公司 | Pre-warning monitoring system for leakage of underground pipeline joint and working method of system |
| CN108679457A (en) * | 2018-07-02 | 2018-10-19 | 中国水利水电科学研究院 | The online leak detection apparatus of pressure water pipe and method |
-
2014
- 2014-02-24 CN CN201420078578.4U patent/CN203743866U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104595728A (en) * | 2015-01-25 | 2015-05-06 | 上海市政工程设计研究总院（集团）有限公司 | Pre-warning monitoring system for leakage of underground pipeline joint and working method of system |
| CN104595728B (en) * | 2015-01-25 | 2017-11-07 | 上海市政工程设计研究总院（集团）有限公司 | The warning monitoring system and its method of work of a kind of underground piping interface seepage |
| CN108679457A (en) * | 2018-07-02 | 2018-10-19 | 中国水利水电科学研究院 | The online leak detection apparatus of pressure water pipe and method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Co-patentee after: Beijing Huanyu Shengwang Intelligent Technology Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation Co-patentee before: Beijing Huanyu Shengwang Intelligent Technology Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20200224 |
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| CF01 | Termination of patent right due to non-payment of annual fee |