CN208567888U - A kind of ocean platform sea ice monitoring device - Google Patents
A kind of ocean platform sea ice monitoring device Download PDFInfo
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- CN208567888U CN208567888U CN201821227540.3U CN201821227540U CN208567888U CN 208567888 U CN208567888 U CN 208567888U CN 201821227540 U CN201821227540 U CN 201821227540U CN 208567888 U CN208567888 U CN 208567888U
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Abstract
The utility model discloses a kind of ocean platform sea ice monitoring devices, it include: the master control system of the main controller for being provided with master control borad, decoding development board and host computer composition, wherein, the output end for decoding development board is connect with master control borad, and master control borad output end is connect with host computer；Video monitor setting is conducive to sea ice monitoring position in oil platform, and output end is connect with master control borad, and sea ice thickness, sea ice speed data are transmitted to master control borad；The setting of ice vibration response sensor is connect in oil platform operating position, output end with decoding development board, by offshore oil platform Ice-excited vibration data transmission to decoding development board；It decodes development board and decoded data is sent to master control borad；Master control borad handles the monitoring data of input, and is transferred to host computer；Host computer to monitoring data into storage and remote transmission；Video monitor, ice vibration response sensor, master control borad, decoding development board and host computer are by power supply power supply.
Description
Technical field
The utility model relates to offshore platforms to exploit the management of winter sea ice monitoring, pass through Platform Ice vibration response sensor
And water temperature profile monitoring sensor, video monitor and anemobiagraph used in ice condition supervising and matched software set up ocean
Oil platform sea ice monitoring system monitors in fact when realizing to the vibration of sea ice ice and ice condition.
Background technique
With advances in technology and to the continuous demand of the energy, marine resources oil and gas development has had been extended to icing sea
Domain.The offshore and gas development in conventional sea area, structure design only need to consider conventional ocean environmental loads (wind, wave, stream), but freeze
Sea area, the probing of the either design or resource of ocean engineering structure, exploitation are all had to be faced with sea ice bring and be asked
Topic.
In most icing sea areas, threat of the sea ice to marine resources development is much bigger more than the influence of wave and wind.It goes through
Once accident caused by a lot of sea ice occurred in history, such as: two simple platforms of the Cook Inlet of the U.S. in 1963 are pushed over by ice；1969
Ice-bound period China " second child number " platform in the Bohai Sea collapses under the huge thrust of sea ice；The seventies Bothnia Gulf of beacon in ice
Collapse under the action of vibration；The eighties Beaufort Molikpaq caisson under Ice-excited vibration ground occur sand liquefaction.At me
State, the late nineteen eighties have also discovered apparent Ice-excited vibration in the more platforms that Liaodong Bay of Bohai is built, so that the Bohai Sea
There is very big security risk in the exploitation of oil gas winter.Winter in 2000, since Ice-excited vibration causes No. 8 wells of Bohai Sea platform to arrange
The fatigue fracture of blank pipe line and flange loosen, and platform is caused to close a well in；Operating personnel of the lasting Ice-excited vibration to the platform
Influence is produced, comfort level and working efficiency are reduced, its physical and mental health can be endangered when serious.
Currently, international sea-ice management is comprehensive multiple means, a system of technology, mainly detected by sea ice pre-
The serial of methods such as report, sea ice threat early warning, ice-breaking deicing means, the emergent stopping of operation facility, avoidance open marine oil and gas
Threat caused by sea ice is analyzed, is evaluated and guaranteed production safety during hair.
Since the thirties in last century, Russia and the iceberg situation with regard to Branchian Sea domain are observed using aircraft, are broken
Ice boat record mode carried out nearly observation in 70 years, by long-term observational record, understand the sea area iceberg moving direction,
Iceberg size and the iceberg distribution situation in entire sea area.1983-1993 is in the oil drilling process of Beaufort, to avoid
It is influenced by sea ice, establishes a whole set of Sea Ice Management System.Sea ice monitoring management is to ensure active service oil gas platform Winter safety
The important means of operation.The implementation of Sea Ice Management System is effectively protected during making drilling installation entire construction operation
Shield, reduces threat of the sea ice to entire engineering.
It is flat not to be able to satisfy oil gas primarily directed to the tracking condition prediction of sea ice element for current existing Sea Ice Disasters forecasting technique
Accuracy and the timeliness requirement of Taiwan Straits ice Risk-warning.International cold regions engineering development field, before this still not towards ice formation stone
The monitoring of oil exploitation and safety management system.Therefore the sea ice monitoring towards offshore platform is to the Winter safety for ensureing platform
Operation is very necessary.
Utility model content
The purpose of this utility model: providing a kind of dedicated unit for ocean platform sea ice monitoring method, with ocean platform sea
Ice monitoring method and its software are used in combination, it can be achieved that offshore platform sea ice monitoring management, acquires offshore platform ice
Vibration data, ocean temperature cross-sectional data, sea ice thickness and speed data, land regions air speed data.Can be forecast clearly for sea ice ice,
Sea ice threat early warning and Platform Ice vibration failure criteria are formulated and provide foundation, while meeting the accurate of oil gas platform sea ice Risk-warning
Property and timeliness requirement.
A kind of ocean platform sea ice monitoring device provided by the utility model, comprising: be provided with main controller, the solution of master control borad
The master control system of code development board and host computer composition, wherein the output end for decoding development board is connect with master control borad, master control borad output
End is connect with host computer；Video monitor setting is conducive to sea ice monitoring position in oil platform, and output end is connect with master control borad,
Sea ice thickness, sea ice speed data are transmitted to master control borad；Ice vibration response sensor is arranged in oil platform operating position,
Output end is connect with decoding development board, by offshore oil platform Ice-excited vibration data transmission to decoding development board；Decode development board
Decoded data are sent to master control borad；Master control borad handles the monitoring data of input, and is transferred to host computer；It is upper
Machine to monitoring data into storage and remote transmission；Video monitor, ice vibration response sensor, master control borad, decoding development board and on
Position machine is by power supply power supply.
Preferably, the monitoring device includes: the anemobiagraph being arranged at the top of oil platform, and output end and master control borad connect
It connects, and land regions air speed data is transmitted to master control borad.
Preferably, the monitoring device includes: the water temperature section that oil platform leg is arranged in and extends to b.s.l.
Sensor is monitored, output end is connect with master control borad, by b.s.l. set depth temperature profile data transmission to master control borad.
Preferably, the clock of the water temperature profile monitoring sensor are as follows: 6:00-18:00；Sampling interval are as follows: 1.5m；Sampling
Pulse length: 10s.
Preferably, the precision of the ice vibration response sensor are as follows: 10mv/dal.
Preferably, the automatic collection time of the video monitor are as follows: 6:00-18:00；Focal length are as follows: 12mm.
The utility model has the effect that
1) it is used in combination according to utility model device and ocean platform sea ice monitoring method and its software, can be realized sea
Upper oil platform Ice-excited vibration data, b.s.l. set depth temperature profile data, sea ice thickness and sea ice speed data,
The processing of land regions air speed data concentrated collection, and it is able to achieve the storage of institute's monitoring data and remote transmission.
2) the utility model is used in combination with ocean platform sea ice monitoring method and its software, can be the oily oil platform sea in sea
Ice ice is forecast clearly, sea ice threat early warning and Platform Ice vibration failure criteria are formulated and provides foundation, meets marine oil and gas platform sea ice wind
Accuracy and the timeliness requirement of dangerous early warning.
Detailed description of the invention
The in-site installation figure of Fig. 1 the utility model embodiment.
The principle of the image measurement of Fig. 2 the utility model embodiment.
Measuring of ice thickness schematic diagram in the platform ocean weather station observation of Fig. 3 the utility model embodiment.
The change in location of the object of Fig. 4 the utility model embodiment.
1 platform peak acceleration and the ice speed of Fig. 5 the utility model embodiment, ice thickness relationship field statistics.
Specific embodiment
Have choosing below the technical solution of the utility model to be further described embodiment.
1. utility model principle
Ice thickness, ice speed, ice to measurement on, image method measuring principle is as shown in Figure 2.The object that actual length is L is logical
Crossing the length in pixels that the video camera that focal length is f projects on image is l.Lens and the real-world object distance of video camera are H and institute
The distance of imaging is h.When H is constant, the ratio of L and l be it is constant, i.e.,
So the focal length of holding video camera first is constant, with the object pair of known length L at the scene in image measurement application
Camera is demarcated, and ratio n is obtained, then the relationship of the length in pixels s on testee length S, with its image are as follows:
And then obtain testee be really length S expression formula it is as follows.
S=n × s (1-3)
So in measurement, if the distance between object and camera lens H are constant.But in actual measurement, object is surveyed
It is completely the same at a distance from when the distance between camera lens H not can guarantee and demarcate.When the difference of θ angle very little and H is lesser
It waits, the influence to measurement result is smaller, can ignore substantially.The principle of image measurement such as Fig. 2.
1.1 measuring of ice thickness
One of an important factor for ice thickness is the form and size of influence ice load.The comparatively method letter of image measurement method
It is single, and the development of image measurement technology in recent years is also rapidly, if using high-precision camera, it can be accurately to structure
Micro-strain measures, therefore is relatively suitble to the measurement of live ice thickness.
The basic ideas of image method measurement ice thickness are that ice and structure function occur after being crushed, and broken ice cube can be overturn so
After fall in water, the section that overturning when exposes can be captured by the camera.Using the object of known dimensions to camera
It is demarcated, the focal length of video camera is certain, then can be counted according to the size of calibration object and the size of the pixel of ice section
Calculate the size of ice thickness.
In-site measurement is carried out to ice thickness on Bohai Liao Dong Bay jacket platform, as shown in Figure 3.Demarcating object is cone
Wave resistance hole, aperture H_Diameter are 20cm, and pixel size on the image is Dh.Ice section pixel size on image is
T, then practical ice thickness Thickness is indicated are as follows:
Thickness=20 × T/Dh (1-4)
Then surveying out ice thickness is 12.2cm.
1.2. ice speed and ice are to measurement
Ice speed and ice are similar with the principle of measuring of ice thickness to measuring.Firstly, shooting one by the fixed camera of installation
Relatively-stationary ice face range；Secondly, demarcating to measuring system, calibration coefficient n is calculated；Then, it captures and tracks
The motion profile (as shown in Figure 4) of point in video in ice face with certain feature, passes through characteristic point in initial frame and final frame
Changes in coordinates, calculate the length s for the pixel that characteristic point moves across, and then obtain the move distance of sea ice:
S=n × s (1-5)
According to the number of before and after frames, the time t run, and then obtain the speed of service of ice:
Assuming that X-direction is 0 ° on image, the coordinate of initial frame characteristic point is (x0,y0), the characteristic point coordinate of final frame is
(x1,y1), then ice is to angle are as follows:
2 platform structure response predictions
Sea ice effect lower platform ice vibration response be it is considerably complicated, be related to many relevant environments and structural element.Research
It was found that influencing maximum factor to Platform Ice vibration is sea ice speed and thickness.Obviously sea ice is thicker, gets over to the impulse force of platform
Greatly, so that response is bigger；Equally, ice speed is faster, and in impact platform, the energy that platform is absorbed is also bigger, so vibration
Response also increases with it.For rising structure, platform response is directly proportional to ice speed and ice thickness under normal circumstances, but in change of tide
When, steady-state vibration may occur for platform, occur greatly response when causing ice speed smaller.Therefore, the statistical method of this section does not include
The steady-state vibration of rising structure.
Based on the measured result of Liaodong Wan cone platform, the vibratory response amplitude and ice thickness of smooth ice action lower platform structure
Square, ice short-term training linear relationship, can write:
A=α hi 2·vi(2-1)
In formula, a is the vibration acceleration (gal) of structure, and α is undetermined coefficient, hiFor ice thickness (cm), viIt is fast (cm/s) for ice.
Based on field monitoring analysis, it may be determined that go out the undetermined coefficient α of platform specific.
3. embodiment
By taking the monitoring of Bohai Sea sea area jacket platform as an example:
According to sea ice monitoring situation by ice vibration response sensor, water temperature profile monitoring sensor, video monitor and wind speed
Instrument is installed to platform corresponding position (as shown in Fig. 1).Uniting is master control for main controller, decoding development board and host computer
System, in exterior, there are response interfaces.Water temperature profile monitoring sensor, video monitor and anemobiagraph conducting wire will be counted
It is connected to control panel spare interface in master control system according to output end, ice vibration response sensor output and main controller, decoding are developed
The connection of plate spare interface.The output end of decoding development board is connect with master control borad, and master control borad output end is connect with host computer to have existed
Connection in master control system, without being attached operation.
When field monitoring works, first operating software is set on main controller: setting ice vibration response sensor accuracy；
Video monitor automatic collection time and focal length etc.；Clock is arranged in water temperature profile monitoring sensor, and in the sampling interval, sampling pulse is long
It is short, state pause judgments time etc..
After equipment debugging completion, master control system will be by ice vibration response sensor, water temperature profile monitoring sensor, video
Monitor and anemobiagraph collect data and carry out pre-processing, store and carry out remote transmission by network.Realize that data are local
Holding and remote transmission.
It is counted, is found under certain ice thickness, Platform Ice vibration adds by the arrangement of the Platform Ice vibration acceleration information to actual measurement
Speed and ice speed are in certain linear relationship.Using 2009-2013 3 years winter Platform Ice vibration response monitoring data, certain is analyzed
Platform Ice vibration response and ice thickness, the relationship of ice speed, as shown in Figure 5.
Based on the above statistical result, using 2-1 formula, certain Platform Ice vibration acceleration is rung under the conditions of can extrapolating different ice thickness
Corresponding undetermined coefficient α in forecasting model is answered, as shown in table 1.
Corresponding factor alpha under 11 platform difference ice thickness of table
| Typical ice thickness | Coefficient of correspondence α |
| 6cm | 0.00521 |
| 8cm | 0.00370 |
| 10cm | 0.00289 |
| 12cm | 0.00236 |
Embodiment of above is merely to illustrate the utility model, and the not limitation of the utility model, related technical field
Those of ordinary skill can make variation and deformation, therefore in the case where not departing from the spirit and scope of the utility model
All equivalent technical solutions also belong to the scope of the utility model.
Claims (6)
1. a kind of ocean platform sea ice monitoring device, which is characterized in that the monitoring device includes:
It is provided with the main controller of master control borad, the master control system of decoding development board and host computer composition, wherein decode the defeated of development board
Outlet is connect with master control borad, and master control borad output end is connect with host computer；
Video monitor setting is conducive to sea ice monitoring position in oil platform, and output end connect with master control borad, by sea ice thickness,
Sea ice speed data is transmitted to master control borad；
The setting of ice vibration response sensor is in oil platform operating position, and output end is connect with decoding development board, by marine stone
Oily platform Ice-excited vibration data transmission to decoding development board；
It decodes development board and decoded data is sent to master control borad；Master control borad handles the monitoring data of input, and passes
It is defeated to arrive host computer；Host computer to monitoring data into storage and remote transmission；
Video monitor, ice vibration response sensor, master control borad, decoding development board and host computer are by power supply power supply.
2. ocean platform sea ice monitoring device according to claim 1, which is characterized in that the monitoring device includes: to set
The anemobiagraph at the top of oil platform is set, output end is connect with master control borad, and land regions air speed data is transmitted to master control
Plate.
3. ocean platform sea ice monitoring device according to claim 1, which is characterized in that the monitoring device includes: to set
It sets and extends to the water temperature profile monitoring sensor of b.s.l. in oil platform leg, output end is connect with master control borad, will
B.s.l. set depth temperature profile data transmission is to master control borad.
4. ocean platform sea ice monitoring device according to claim 3, which is characterized in that the water temperature profile monitoring sensing
The clock of device are as follows: 6:00-18:00；Sampling interval are as follows: 1.5m；Sampling pulse length: 10s.
5. ocean platform sea ice monitoring device according to claim 1, which is characterized in that the ice vibration response sensor
Precision are as follows: 10mv/dal.
6. ocean platform sea ice monitoring device according to claim 1, which is characterized in that the video monitor it is automatic
Acquisition time are as follows: 6:00-18:00；Focal length are as follows: 12mm.
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| CN201821227540.3U CN208567888U (en) | 2018-08-01 | 2018-08-01 | A kind of ocean platform sea ice monitoring device |
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| CN201821227540.3U CN208567888U (en) | 2018-08-01 | 2018-08-01 | A kind of ocean platform sea ice monitoring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709541A (en) * | 2018-08-01 | 2018-10-26 | 大连理工大学盘锦产业技术研究院 | A kind of ocean platform sea ice monitoring devices and methods therefor |
| CN112325925A (en) * | 2020-09-21 | 2021-02-05 | 中海石油深海开发有限公司 | Health monitoring system for marine jacket platform structure |
-
2018
- 2018-08-01 CN CN201821227540.3U patent/CN208567888U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709541A (en) * | 2018-08-01 | 2018-10-26 | 大连理工大学盘锦产业技术研究院 | A kind of ocean platform sea ice monitoring devices and methods therefor |
| CN112325925A (en) * | 2020-09-21 | 2021-02-05 | 中海石油深海开发有限公司 | Health monitoring system for marine jacket platform structure |
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