CN105651182A - Oil and gas pipeline displacement monitoring device - Google Patents
Oil and gas pipeline displacement monitoring device Download PDFInfo
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- CN105651182A CN105651182A CN201511019971.1A CN201511019971A CN105651182A CN 105651182 A CN105651182 A CN 105651182A CN 201511019971 A CN201511019971 A CN 201511019971A CN 105651182 A CN105651182 A CN 105651182A
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- oil
- stake
- gas pipes
- erecting stage
- gas pipeline
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
Abstract
The present invention discloses an oil and gas pipeline displacement monitoring device. The oil and gas pipeline displacement monitoring device includes a dynamic pile and a foundation pile; a first mounting platform is fixed on the dynamic pile; the first mounting platform is provided with a first reflector; a second mounting platform is fixed to the foundation pile; the second mounting platform is provided with a beam splitter, a laser, a second reflector and a photo detector; the beam splitter, the laser, the second reflector, the photo detector and the first reflector form a Michelson interferometer; the lower end of the dynamic pile is fixedly connected with a clamping hoop; the clamping hoop is mounted at the outer circumference of an oil and gas pipeline; and the foundation pile is fixedly mounted at one side of the oil and gas pipeline. According to the oil and gas pipeline displacement monitoring device of the invention, the Michelson interference method is adopted to detect the displacement of the oil and gas pipeline; the photo detector obtains a measurement result, and therefore, a precision guarantee can be provided; and an acquisition unit inputs measured data to a processing unit, so that the measured data can be processed in the processing unit. The oil and gas pipeline displacement monitoring device has the advantages of high measuring precision, high automation degree, operation simple and the like, and can achieve real-time monitoring.
Description
Technical field
The invention belongs to frozen soil district oil and gas pipes displacement monitoring technical field, it is specifically related to a kind of oil and gas pipes displacement monitor.
Background technology
Frozen soil is a kind of special great soil group, and temperature is negative temperature or zero temperature, and the soil containing ice, it is called frozen soil. By the length of the frozen state hold-time of soil, frozen soil generally can be divided into again frozen soil (a few hours to half month), frozen soil in season (half month to the several months) and ever frost (more than 2 years) in short-term. China's frozen soil is grown very much, and ever frost area is about 2,110,000 square kilometres, accounts for the 23% of China's territory total area, accounts for the 3rd in the world, is mainly distributed in Qinghai-Tibet Platean, western high mountain and northeast Xing'anling mountains; Seasonal frozen soil area is about 5,140,000 square kilometres, accounts for the 53.5% of territory total area. Wherein, middle degree of depth frozen soil in season (> 1m) accounts for the 1/3 of area, is mainly distributed in the ground such as three provinces in the northeast of China, the Inner Mongol, Gansu, Ningxia, the north, Xinjiang, Qinghai and Chuan Xi.
In the last hundred years, world climate has the trend turning warm, thus causes the degeneration of some the area ever frost comprising the Northeast. Resemble northeast ever frost south circle near, owing to weather turns warm, underground ice melts under natural condition, thus form hot Rong Hu, heat melt the phenomenons such as depression, also there is passing northwards in the Nan Jie of ever frost. Some locations originally having ever frost of Nan Jie, through in a few years or ever frost Lock-out after decades. Engineering works is built, if failing during design to predict because ground melts contingent sedimentation, and in operation process in Permafrost Area, sinkability exceedes the tolerable limit of buildings, so it is envisioned that its basis and superstructure thereof will occur even destroying the distortion not allowed.
Developed country's oil pipeline construction has more than 100 year history, and a lot of frozen soil area is contained huge hydrocarbon resources, and correspondingly oil and gas pipes engineering design and construction becomes the up-to-date challenge of these area petroleum industries. The Article 1 long-distance oil & gas pipeline that China builds in Permafrost Area, i.e. Golmud-Lhasa oil pipeline (being called for short lattice bracing wire), lattice bracing wire was constructed in 1972 by the Chinese People's Liberation Army, within 1977, substantially build up, reach 1076km, caliber 159mm, thickness of pipe 6mm, investment 2.3x108 is first.Lattice bracing wire engineering is built and is safeguarded very difficult, completely 108, spanning of river, and road crossing 123 place, more than 900 kilometer of pipeline is positioned at ever frost district at more than height above sea level 4000m, 560km, and freezing period reaches 8 months. Since lattice bracing wire ran from 1977, frost heave, melt heavy problem and caused repeatedly " dew pipe " phenomenon.
Although pipeline unit of operation takes the frozen swell and melt settlement disaster in positive measure reply frozen soil district both at home and abroad, Chinese patent literature CN102563356B (application number is 201110456598.1) discloses " a kind of frozen soil district oil and gas pipes erects to automatic displace monitor system ", this kind of Monitoring systems have employed the liquid pressure monitoring method being different from common static level sedimentometer, by respectively arranging osmometer at reference point and monitoring point, the liquid pressure of the hydraulic efficiency system of datum mark and place, monitoring point elevation, and then the difference of elevation of Calculation Basis point and monitoring point. This Monitoring systems, due to osmometer range big (adopting range to be the osmometer of 70KPa), is mainly used in the monitoring of big range (2m), but the tolerance range monitored by little range is not high, and the microbit that can not effectively monitor oil and gas pipes is moved.
Michelson interferometer is the more common one of optical interdferometer, and its principle is: a branch of incident beam is divided into two bundles and by flat mirror reflects thus produces interference, forms fringe pattern. The different light paths of two-beam can realize by regulating the length of interference arm to change medium, is mainly used in the measurement of length and specific refractory power.
Summary of the invention
It is an object of the invention to solve the problem, it is provided that a kind of oil and gas pipes displacement monitor based on Michelson interferometer.
The technical scheme of the present invention is: a kind of oil and gas pipes displacement monitor, comprises dynamic stake and base stake, and dynamic stake is fixed with the first erecting stage, and the first erecting stage is provided with the first speculum; Being fixed with the 2nd erecting stage in base stake, the 2nd erecting stage is provided with spectroscope, laser apparatus, two-mirror and photodetector, and described spectroscope, laser apparatus, two-mirror and photodetector and the first speculum form Michelson interferometer; The lower end of dynamic stake is fixedly connected with card hoop, and card hoop is arranged on the excircle of oil and gas pipes, and base stake is fixedly mounted on the side of oil and gas pipes.
Preferably, outside described dynamic stake, it is arranged with locating sleeve, moves and between stake and locating sleeve, be provided with buffer layer, be arranged with protective casing outside base stake, between base stake and protective casing, be provided with buffer layer.
Preferably, described buffer layer is around the felt becoming ring-type.
Preferably, described photodetector is connected with collecting unit, and collecting unit is connected with processing unit, the data that described processing unit is collected for the treatment of collecting unit.
Preferably, described first erecting stage and the 2nd erecting stage are positioned at same level, or, the first erecting stage and the 2nd erecting stage are positioned at same vertical plane.
The invention has the beneficial effects as follows: oil and gas pipes displacement monitor provided by the present invention, oil and gas pipes displacement is detected by michelson interferometry, photodetector obtains measuring result, provide precision guarantee, collecting unit processes in the data input reason unit recorded, and has measuring accuracy height, level of automation height, the advantage such as easy and simple to handle, and Real-Time Monitoring can be accomplished.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of Michelson interferometer in the embodiment of the present invention one;
Fig. 2 is the scheme of installation of oil and gas pipes displacement monitor in the embodiment of the present invention one;
Fig. 3 is the scheme of installation of oil and gas pipes displacement monitor in the embodiment of the present invention two.
Description of reference numerals: 1, dynamic stake; 2, base stake; 3, the first erecting stage; 4, the 2nd erecting stage; 5, the first speculum; 6, spectroscope; 7, laser apparatus; 8, two-mirror; 9, photodetector; 10, card hoop; 11, oil and gas pipes; 12, locating sleeve; 13, protective casing.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described further:
Embodiment one
As depicted in figs. 1 and 2, the oil and gas pipes displacement monitor of the present invention, comprises dynamic stake 1 and the base stake 2 of vertically setting, dynamic stake 1 is fixed with the first erecting stage 3, first erecting stage 3 and is provided with the first speculum 5; Base stake 2 is fixed with the 2nd erecting stage the 4, two erecting stage 4 and the first erecting stage 3 is positioned at same level; 2nd erecting stage 4 is provided with spectroscope 6, laser apparatus 7, two-mirror 8 and photodetector 9, and above-mentioned spectroscope 6, laser apparatus 7, two-mirror 8 and photodetector 9 and the first speculum 5 form Michelson interferometer; Photodetector 9 is connected with collecting unit, and collecting unit is connected with processing unit, the data that processing unit is collected for the treatment of collecting unit.
The lower end of dynamic stake 1 binds round 10 with card and is fixedly connected with, card hoop 10 is arranged on the excircle of oil and gas pipes 11, base stake 2 is fixedly mounted on the side of oil and gas pipes 11, the mode of drilling deep hole is adopted to bury base stake 2 to eternal frozen ground underground, and fixed by concrete, base stake 2 and eternal frozen ground are condensated as a whole, and then ensure that base stake 2 is definitely not dynamic, thus ensure that monitoring accuracy. It is arranged with locating sleeve 12 outside dynamic stake 1; move and it is provided with buffer layer between stake 1 and locating sleeve 12; protective casing 13 it is arranged with outside base stake 2; it is provided with buffer layer between base stake 2 and protective casing 13; above-mentioned buffer layer is around the felt becoming ring-type; and in buffer layer, pour into a mould butter; when frozen soil around locating sleeve 12 and protective casing 13 changes like this; only can have influence on locating sleeve 12 and protective casing 13; and dynamic stake 1 and the base stake 2 among them can not be affected, also ensure that dynamic stake 1 can reflect the displacement of oil and gas pipes 11 really.
Open laser apparatus 7, by the movement of the first erecting stage 3, the laser beam that laser apparatus 7 penetrates becomes two-beam through spectroscope 6, and this two-beam meets coherent condition, meet at through two-mirror 8 and the first speculum 5 respectively and photodetector 9 is formed bright spot, and make bright spot placed in the middle; While meeting above-mentioned interference phenomenon, dynamic stake 1 and base stake 2 are fixedly mounted, when there is frozen swell and melt settlement in frozen soil district, the movement of the first erecting stage 3 and the first speculum 5 makes interference light change, thus the first speculum 5 and two-mirror 8 meet at the change of the intensity generation light and shade of the bright spot of formation on photodetector 9, in this process, photodetector 9 is by the interference waveform of light by collecting unit input processing unit, and processing unit can calculate the horizontal shift �� L of oil and gas pipes 11 according to following formula:
�� L=2 �� N* ��,
Wherein, �� N is number through crest (or trough) in interference waveform figure, is drawn by the interference waveform of light by photodetector 9; �� is the wavelength of incident laser, and the size of this value is only relevant with the selection of laser apparatus 7.
Embodiment two
As shown in Figure 3, oil and gas pipes displacement monitor in the present embodiment and the structure in embodiment one and principle are similar, difference is that the first erecting stage 3 and the 2nd erecting stage 4 are positioned at same vertical plane, and first erecting stage 3 be positioned at immediately below the 2nd erecting stage 4, the oil and gas pipes displacement monitor installed like this is for monitoring the vertical displacement of oil and gas pipes 11, in actual use, many group oil and gas pipes displacement monitors can be set, adopt the installation mode in embodiment one and the installation mode in embodiment two respectively, get final product the displacement of comprehensive monitoring oil and gas pipes 11.
Laser all to be expanded by conventional Michelson interferometer, this allows reading (to be counted out the number of ring occurring or disappearing) very inconvenience (can not have any vibration interference in counting process), and this method laser is without expanding, the intensity of interference light measured by direct photo-detector, therefore reading process is made greatly to simplify, photodetector obtains measuring result, it provides precision guarantee. By Michelson interferometer, oil and gas pipes displacement is measured in real time, micron shift length even nanometer can be measured, it is achieved the precisely object of detection.
The those of ordinary skill of this area, it will be appreciated that embodiment described here is the principle in order to help reader understanding the present invention, should be understood to that protection scope of the present invention is not limited to such special statement and embodiment. The those of ordinary skill of this area can make various other various concrete distortion and combination of not departing from essence of the present invention according to these technology disclosed by the invention enlightenment, and these distortion and combination are still in protection scope of the present invention.
Claims (6)
1. an oil and gas pipes displacement monitor, it is characterized in that: comprise dynamic stake (1) and base stake (2), being fixed with the first erecting stage (3) in dynamic stake (1), the first erecting stage (3) is provided with the first speculum (5); Base stake (2) is fixed with the 2nd erecting stage (4), 2nd erecting stage (4) is provided with spectroscope (6), laser apparatus (7), two-mirror (8) and photodetector (9), and described spectroscope (6), laser apparatus (7), two-mirror (8) and photodetector (9) and the first speculum (5) form Michelson interferometer; The lower end of dynamic stake (1) binds round (10) with card and is fixedly connected with, card hoop (10) is arranged on the excircle of oil and gas pipes (11), and base stake (2) is fixedly mounted on the side of oil and gas pipes (11).
2. oil and gas pipes displacement monitor according to claim 1; it is characterized in that: outside described dynamic stake (1), be arranged with locating sleeve (12); move and it is provided with buffer layer between stake (1) and locating sleeve (12); it is arranged with protective casing (13) outside base stake (2), between base stake (2) and protective casing (13), it is provided with buffer layer.
3. oil and gas pipes displacement monitor according to claim 2, it is characterised in that: described buffer layer is around the felt becoming ring-type.
4. oil and gas pipes displacement monitor according to claim 1, it is characterised in that: described photodetector (5) is connected with collecting unit, and collecting unit is connected with processing unit, the data that described processing unit is collected for the treatment of collecting unit.
5. oil and gas pipes displacement monitor according to claim 1, it is characterised in that: described first erecting stage (3) and the 2nd erecting stage (4) are positioned at same level.
6. oil and gas pipes displacement monitor according to claim 1, it is characterised in that: described first erecting stage (3) and the 2nd erecting stage (4) are positioned at same vertical plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511019971.1A CN105651182A (en) | 2015-12-30 | 2015-12-30 | Oil and gas pipeline displacement monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511019971.1A CN105651182A (en) | 2015-12-30 | 2015-12-30 | Oil and gas pipeline displacement monitoring device |
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| CN105651182A true CN105651182A (en) | 2016-06-08 |
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| CN201511019971.1A Pending CN105651182A (en) | 2015-12-30 | 2015-12-30 | Oil and gas pipeline displacement monitoring device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109489537A (en) * | 2018-11-20 | 2019-03-19 | 华侨大学 | A kind of seabed unburied pipeline vibration displacement monitoring device |
| CN111113550A (en) * | 2019-12-12 | 2020-05-08 | 奥士康科技股份有限公司 | PCB board drilling machine calibration positioner |
| CN111561910A (en) * | 2020-05-27 | 2020-08-21 | 珠海任驰光电科技有限公司 | Optical fiber interference type settlement meter capable of adjusting differential pressure range, system and measuring method |
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| JP2009098031A (en) * | 2007-10-17 | 2009-05-07 | Central Res Inst Of Electric Power Ind | Detecting apparatus and detecting method for interfacial condition of multilayered tube |
| US20090201509A1 (en) * | 2006-05-15 | 2009-08-13 | Kyungpook National University Industry- Academic Cooperation Foundation | Interferometer using vertical-cavity surface-emitting lasers |
| CN103090830A (en) * | 2011-11-03 | 2013-05-08 | 中国石油天然气股份有限公司 | Monitoring method and monitoring device for displacement of oil and gas pipeline in frozen soil area |
| CN204439009U (en) * | 2015-03-30 | 2015-07-01 | 北方民族大学 | A kind of modified planar reflector laser interference instrument |
| CN204495277U (en) * | 2015-03-30 | 2015-07-22 | 北方民族大学 | A kind of anti-interference ladder corner reflector laser interferometer |
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2015
- 2015-12-30 CN CN201511019971.1A patent/CN105651182A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20090201509A1 (en) * | 2006-05-15 | 2009-08-13 | Kyungpook National University Industry- Academic Cooperation Foundation | Interferometer using vertical-cavity surface-emitting lasers |
| JP2009098031A (en) * | 2007-10-17 | 2009-05-07 | Central Res Inst Of Electric Power Ind | Detecting apparatus and detecting method for interfacial condition of multilayered tube |
| CN103090830A (en) * | 2011-11-03 | 2013-05-08 | 中国石油天然气股份有限公司 | Monitoring method and monitoring device for displacement of oil and gas pipeline in frozen soil area |
| CN204439009U (en) * | 2015-03-30 | 2015-07-01 | 北方民族大学 | A kind of modified planar reflector laser interference instrument |
| CN204495277U (en) * | 2015-03-30 | 2015-07-22 | 北方民族大学 | A kind of anti-interference ladder corner reflector laser interferometer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109489537A (en) * | 2018-11-20 | 2019-03-19 | 华侨大学 | A kind of seabed unburied pipeline vibration displacement monitoring device |
| CN109489537B (en) * | 2018-11-20 | 2021-06-29 | 华侨大学 | Vibration displacement monitoring device for seabed bare pipeline |
| CN111113550A (en) * | 2019-12-12 | 2020-05-08 | 奥士康科技股份有限公司 | PCB board drilling machine calibration positioner |
| CN111561910A (en) * | 2020-05-27 | 2020-08-21 | 珠海任驰光电科技有限公司 | Optical fiber interference type settlement meter capable of adjusting differential pressure range, system and measuring method |
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Application publication date: 20160608 |
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