CN103680076B - Double; two main frame distribution type fiber-optic prestressing force pipeline performance safety pre-warning systems - Google Patents
Double; two main frame distribution type fiber-optic prestressing force pipeline performance safety pre-warning systems Download PDFInfo
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- CN103680076B CN103680076B CN201210319718.8A CN201210319718A CN103680076B CN 103680076 B CN103680076 B CN 103680076B CN 201210319718 A CN201210319718 A CN 201210319718A CN 103680076 B CN103680076 B CN 103680076B
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Abstract
The present invention relates to a kind of double; two main frame distribution type fiber-optic prestressing force pipeline performance safety pre-warning system, including indoor module and outdoor module, its outdoor module includes pipeline end bonder, leading-in end bonder and exit bonder, the exit bonder and leading-in end bonder that match it is respectively provided with outside the butterfly valve of prestressing force pipeline, exit bonder and leading-in end bonder are connected by optical fiber, the optical fiber laid on prestressing force pipeline inwall is guided to outside prestressing force pipeline by exit bonder, is led back in prestressing force pipeline by leading-in end bonder；Indoor module includes two computers, two data collecting cards, two photodetectors, two semiconductor lasers and two indoor bonders.Present configuration is simple, design science is reasonable, steel wire fracture has significantly high monitoring sensitivity and positioning precision, and monitoring system easily realizes, and reliable, is more suitable for distance prestressing force pipeline.
Description
Technical field
The invention belongs to pipeline safety early warning system field, especially a kind of double; two main frame distribution type fiber-optic prestressing force pipeline performance safety pre-warning systems.
Background technology
Prestressing force pipeline includes Prestressed concrete cylinder pipe line, as distance, heavy caliber water delivery main force tubing, and the advantage such as there is wide accommodation, cost performance height, life-span length, anti-seismic performance is good, corrosion-resistant, easy for installation, operating cost is low.Just because of these advantages, prestressing force pipeline is widely used in the fields such as waterpower, water power, municipal water supply, draining by developed countries such as America and Europes.The application at home of prestressing force pipeline starts from late 1980s, and in the last few years, China is built or at the large-scale water delivery engineering built, from flow or transmission range, all position is at the forefront in the world.These engineerings use prestressing force pipeline all in a large number.Along with the extensive application of prestressing force pipeline, the early warning monitoring to pipeline performance safety, seem more and more important.
According to the domestic and international statistics to prestressing force pipeline pipe explosion accident, compressor wire ruptures, and is called for short fracture of wire, is the main cause causing booster.Provide early warning information before how utilizing the booster that various new method, new technique cause because of hidden danger such as water hammering, corrosion and wire quality lacks of uniformity at pipeline and be accurately positioned, thus pipe explosion accident is prevented trouble before it happens, it is prestressing force pipeline safe operation and the encountered significant challenge of development.
At present, multiple fracture of wire booster detection technique and method are had both at home and abroad.But most of detection techniques mainly adopt cyclic check tubing, the method for assessment steel wire state to judge that tubing the need of maintenance or is replaced.Such as, field of remote control transformation coupling inspection technique (RFTC), after commercialization in 1997 is released, it has also become the standard of prestressing force pipeline industry assessment.RFTC technology can provide the position of pipeline in prestressing force pipeline, distribution and destruction quantity for management personnel, thus obtaining optimum state assessed information.Although this technology is almost suitable for all types of prestressing force pipeline, but it requires that prestressing force pipeline is out of service, and inconvenient operation have impact on the use of pipeline and poor real.
2007, the detector that freely moves about successfully was developed and for prestressing force pipeline field.It has the ability carrying out prestressing force pipeline RFTC inspection at the scene.This new instrument can be put in pipeline by small-sized boring tap technology with pressure, while current crossline, collect RFTC data, then downstream another boring tapping device with pressure is recovered.Although freely moving about, detector can detect under pipeline duty, but still has complicated operation, can not the deficiency of real-time early warning to unexpected incidents.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, a kind of double; two main frame distribution type fiber-optic prestressing force pipeline performance safety pre-warning system is provided, steel wire fracture is had significantly high monitoring sensitivity and positioning precision by this early warning system, and monitoring system easily realizes, and reliable.
This invention address that its technical problem is achieved through the following technical solutions:
A kind of double, two main frame distribution type fiber-optic prestressing force pipeline performance safety pre-warning system, including indoor module and outdoor module, indoor module passes through optical fiber junction chamber outer mold piece, outdoor module is arranged on prestressing force pipeline, prestressing force pipeline is provided with butterfly valve, it is laid with optical fiber at prestressing force pipeline inwall, it is (1), this outdoor module includes pipeline end bonder, leading-in end bonder and exit bonder, the exit bonder and leading-in end bonder that match it is respectively provided with outside the butterfly valve of prestressing force pipeline, exit bonder and leading-in end bonder are connected by optical fiber, the optical fiber laid on prestressing force pipeline inwall is guided to outside prestressing force pipeline by exit bonder, led back in prestressing force pipeline by leading-in end bonder；
(2), indoor module includes two computers, two data collecting cards, two photodetectors, two semiconductor lasers and two indoor bonders, the respective port of these two indoor bonders connects the pipeline end bonder at prestressing force pipeline two ends respectively through optical fiber, two respective inputs of indoor bonder connect respective semiconductor laser respectively, two respective outfans of indoor bonder connect respective photodetector respectively, the outfan of photodetector connects the input of respective data collecting card respectively, the outfan of data collecting card connects the input of respective computer respectively, two computer inter communicate.
And, carry out communication by cable network between two described computers.
And, carry out communication by wireless network between two described computers.
Advantages of the present invention and having the beneficial effect that
1, the outdoor module of this pair of main frame distribution type fiber-optic prestressing force pipeline performance safety pre-warning system includes pipeline end bonder, leading-in end bonder and exit bonder, the exit bonder and leading-in end bonder that match it is respectively provided with outside the butterfly valve of prestressing force pipeline, exit bonder and leading-in end bonder are connected by optical fiber, the optical fiber laid on prestressing force pipeline inwall is guided to outside prestressing force pipeline by exit bonder, lead back in prestressing force pipeline by leading-in end bonder, this structure arranges and ensure that the sealing of butterfly valve on prestressing force pipeline, optical fiber is not directly through butterfly valve, but on the prestressing force pipeline of butterfly valve side, optical fiber is drawn, butterfly valve is walked around outside prestressing force pipeline, it is reintroduced back in prestressing force pipeline from butterfly valve opposite side again, realize the leap to butterfly valve.Passing prestressed pipe linear light fibre two ends and connect exit bonder and leading-in end bonder respectively, the optical fiber between two bonders to vibration sensing, would not manage the interference of outer noise and vibration to reduce.
null2、This pair of main frame distribution type fiber-optic prestressing force pipeline performance safety pre-warning system indoor module includes two computers、Two data collecting cards、Two photodetectors、Two semiconductor lasers and two indoor bonders，The respective port of these two indoor bonders connects the pipeline end bonder at prestressing force pipeline two ends respectively through optical fiber，Two respective inputs of indoor bonder connect respective semiconductor laser respectively，Two respective outfans of indoor bonder connect respective photodetector respectively，The outfan of photodetector connects the input of respective data collecting card respectively，The outfan of data collecting card connects the input of respective computer respectively，Two computer inter communicate，The advantage of this structure arrangement is to adopt two laser instrument correlation，The ultimate range of detection expands than a laser instrument mode and is twice，The situation that to be particularly suited in long water conveying tunnel two valve chamber spacing longer.
3, present configuration is simple, design science is reasonable, steel wire fracture has significantly high monitoring sensitivity and positioning precision, and monitoring system easily realizes, and reliable, is more suitable for distance prestressing force pipeline.
Accompanying drawing explanation
Fig. 1 is the laying schematic block diagram of the present invention；
Fig. 2 is the present invention layout schematic diagram at prestressing force line segments.
Detailed description of the invention
Below by specific embodiment, the invention will be further described, and following example are illustrative, is not determinate, it is impossible to limit protection scope of the present invention with this.
A kind of double, two main frame distribution type fiber-optic prestressing force pipeline performance safety pre-warning system, including indoor module 1 and outdoor module 2, indoor module passes through optical fiber junction chamber outer mold piece, outdoor module is arranged on prestressing force pipeline 4, prestressing force pipeline is provided with butterfly valve 7, it is laid with optical fiber 5 at prestressing force pipeline inwall, it is (1), this outdoor module includes pipeline end bonder 3, leading-in end bonder 6 and exit bonder 8, the exit bonder and leading-in end bonder that match it is respectively provided with outside the butterfly valve of prestressing force pipeline, exit bonder and leading-in end bonder are connected by optical fiber, the optical fiber laid on prestressing force pipeline inwall is guided to outside prestressing force pipeline by exit bonder, led back in prestressing force pipeline by leading-in end bonder；(2), indoor module includes two computers, two data collecting cards, two photodetectors, two semiconductor lasers and two indoor bonders, the respective port of these two indoor bonders connects the pipeline end bonder at prestressing force pipeline two ends respectively through optical fiber, two respective inputs of indoor bonder connect respective semiconductor laser respectively, two respective outfans of indoor bonder connect respective photodetector respectively, the outfan of photodetector connects the input of respective data collecting card respectively, the outfan of data collecting card connects the input of respective computer respectively, two computer inter communicate.Communication is carried out by cable network, it would however also be possible to employ wireless network carries out communication between these two computers.
Prestressing force pipeline butterfly valve section part fiber of the present invention need to pass pipeline and walk around butterfly valve.Optical fiber two ends outside prestressing force pipeline install exit bonder and leading-in end bonder additional, shield the interference signal at this section of optical fiber place.Light wave is propagated in accordance with the following methods: light wave enters prestressing force pipeline inner fiber by pipeline end bonder, it is possible to detection fracture of wire or leakage vibration signal；At butterfly valve place, in optical fiber, light wave converges at exit bonder place, enters prestressing force pipeline infrared optical fiber and walks around butterfly valve, and now optical fiber will not experience extraneous vibration signal；It is again introduced into prestressing force pipeline inner fiber at butterfly valve opposite side by leading-in end bonder, continues detection vibration signal；As met butterfly valve again, will walk around as stated above again.
Optical fiber effect between indoor module and outdoor module has been light wave between distribution type fiber-optic vibrative sensor and micro-vibrating detector and interference light signal transmission in prestressing force pipeline.Therefore interference signal to external world is insensitive.And react sensitive distribution type fiber-optic vibrative sensor and be covered on prestressing force pipeline inwall, so can efficiently reduce the interference to detection system of the external interference signal.
The present invention adopts two semiconductor laser correlation, the ultimate range of detection is twice than one the host mode expansion of a laser instrument, the situation that to be particularly suited in long water conveying tunnel two valve chamber spacing longer, and a photodetector, a blocks of data capture card and a computer are respectively installed in prestressing force pipeline two ends, gather data respectively.The data of tail end computer acquisition after treatment, pass to head end by computer network, and the position that fracture of wire or leakage are occurred by head end computer by analyzing two data of first and last end positions.
Claims (3)
1. a double; two main frame distribution type fiber-optic prestressing force pipeline performance safety pre-warning system, including indoor module and outdoor module, indoor module passes through optical fiber junction chamber outer mold piece, outdoor module is arranged on prestressing force pipeline, prestressing force pipeline is provided with butterfly valve, it is laid with Fiber optic micro-vibration sensor at prestressing force pipeline inwall, it is characterised in that:
(1), this outdoor module includes pipeline end bonder, leading-in end bonder and exit bonder, the exit bonder and leading-in end bonder that match it is respectively provided with outside the butterfly valve of prestressing force pipeline, exit bonder and leading-in end bonder are connected by optical fiber, the Fiber optic micro-vibration sensor laid on prestressing force pipeline inwall is guided to outside prestressing force pipeline by exit bonder, is led back in prestressing force pipeline by leading-in end bonder；
(2), indoor module includes two computers, two data collecting cards, two photodetectors, two semiconductor lasers and two indoor bonders, the respective port of these two indoor bonders connects the pipeline end bonder at prestressing force pipeline two ends respectively through optical fiber, two respective inputs of indoor bonder connect respective semiconductor laser respectively, two respective outfans of indoor bonder connect respective photodetector respectively, the outfan of photodetector connects the input of respective data collecting card respectively, the outfan of data collecting card connects the input of respective computer respectively, two computer inter communicate.
2. according to claim 1 pair of main frame distribution type fiber-optic prestressing force pipeline performance safety pre-warning system, it is characterised in that: carry out communication by cable network between two described computers.
3. according to claim 1 pair of main frame distribution type fiber-optic prestressing force pipeline performance safety pre-warning system, it is characterised in that: carry out communication by wireless network between two described computers.
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| CN201210319718.8A CN103680076B (en) | 2012-08-31 | 2012-08-31 | Double; two main frame distribution type fiber-optic prestressing force pipeline performance safety pre-warning systems |
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| CN201210319718.8A CN103680076B (en) | 2012-08-31 | 2012-08-31 | Double; two main frame distribution type fiber-optic prestressing force pipeline performance safety pre-warning systems |
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| CN103680076B true CN103680076B (en) | 2016-07-06 |
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| CN111024210B (en) * | 2019-12-15 | 2024-03-08 | 北京百世通管道科技有限公司 | PCCP pipeline broken wire monitoring and pipe explosion early warning method and system |
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| US7444882B2 (en) * | 2005-12-06 | 2008-11-04 | Geoffrey Woo | Material failure prediction/stress/strain detection method and system using deformation luminescence |
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| WO2009126991A1 (en) * | 2008-04-14 | 2009-10-22 | Swinburne University Of Technology | Method and system for monitoring strain in a structure using an optical fibre |
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