CN204758251U - From lift -type platform wind load factor testing experiment system - Google Patents
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- CN204758251U CN204758251U CN201520455242.XU CN201520455242U CN204758251U CN 204758251 U CN204758251 U CN 204758251U CN 201520455242 U CN201520455242 U CN 201520455242U CN 204758251 U CN204758251 U CN 204758251U
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Abstract
The utility model discloses a from lift -type platform wind load factor testing experiment system, including experiment platform, monitoring platform and control platform, the experiment platform includes simulation wind field passageway, atmospheric boundary layer analogue means and distinguished and admirable generating device, simulation wind field passageway includes air pipe and sets up the platform model in air pipe, atmospheric boundary layer analogue means includes momentum loss device, the coarse unit of lateral mixing device and ground, distinguished and admirable generating device includes the air -blower and leads the flow net board, the monitoring platform includes wind -force, wind pressure and wind speed signal acquisition and processing unit, control platform is including being used for control thereby the output of air -blower motor produces the distinguished and admirable bulging fan control unit of different wind velocity gradients and is used for gathering, handle the data acquisition and the processing unit of analysis and demonstration in real time to coming from the signal of monitoring the platform under different power.
Description
Technical field
The utility model relates to wind load measuring technology, especially a kind of self-elevating ocean platform wind force coefficient testing experimental system.
Background technology
Self-elevating ocean platform is in ocean physical environment complicated and changeable, and will be subject to the load effect of wind, wave, ocean current and sea ice formation, wherein wind load is the topmost control load of structural design, and it accounts for the largest percentage in all environmental loads.The size of wind load directly concerns the safety under working platform state, and under the effect of wind load, platform structure because stress is too high, yield failure may occur, while also can make platform generation fatigure failure due to the power alternation effect of wind load.Therefore, the accurate forecast of wind load has great importance to the security of platform and economy, in order to ensure the safety of platform under rough seas condition and transaction capabilities, the analysis and research that wind load under different marine environment condition affects platform must be carried out, i.e. wind force coefficient test experiments research.
Carrying out wind force coefficient test experiments, is the wind force coefficient in order to draw self-elevating ocean platform under different marine environment condition, i.e. shape coefficient C
s, to obtain the impact of wind load on ocean platform, for the initial stage design of platform provides foundation with maintenance.
The common method of research ocean platform wind load mainly contains field observation, numerical simulation and wind tunnel experiment both at home and abroad at present.China lacks relevant ocean platform wind load site observation date at present, although wind tunnel experiment is the effective means that platform wind load is determined, experimental cost is general comparatively high, is not suitable for using at the design initial stage.
Utility model content
The utility model provides a kind of self-elevating ocean platform wind force coefficient testing experimental system, for overcoming defect of the prior art, greatly reduces experimental cost.
The utility model provides a kind of self-elevating ocean platform wind force coefficient testing experimental system, comprising:
Experiment porch, comprises modeling wind field passage, Boundary layer simulation device and distinguished and admirable generating means; Described modeling wind field passage comprises ventilating duct and is arranged on the offshore platform model in described ventilating duct; Described Boundary layer simulation device comprises momentum loss device, side direction mixing arrangement and ground roughness element; Described distinguished and admirable generating means comprises fan blower and is arranged on the water conservancy diversion web plate of described blower export;
Monitoring platform, for gather different wind velocity gradient and different wind angle wind load action under the data-signal of described offshore platform model response; Comprise wind-force signals collecting and processing unit, wind pressure signal sampling and processing unit and wind velocity signal sampling and processing unit;
Parametric controller, for the controlling run of described experiment porch and the collection analysis of experimental data; Comprise the output power for controlling described blower motor thus produce under different capacity different wind velocity gradient distinguished and admirable air compressor control unit and for carrying out Real-time Collection, the data acquisition of Treatment Analysis and display and processing unit to the signal coming from described monitoring platform.
Preferably, described modeling wind field passage also comprises the support be fixedly installed in described ventilating duct and the rotating disk for adjusting offshore platform model windward side angle arranged on the bracket.
Preferably, described wind-force signals collecting and processing unit are the five component pedestal balances be placed on below described offshore platform model.
Preferably, described wind pressure signal sampling and processing unit is electric pressure scaner.
Preferably, described wind velocity signal sampling and processing unit is hot line hot-die anemoscope.
The self-elevating ocean platform wind force coefficient testing experimental system that the utility model provides, wind load modeling wind field test experiments platform is built by devices such as offshore platform model, fan blower, vortex generators, adopt the characteristic parameter information of platform in the monitoring wind load action processes such as five component pedestal balances, electric pressure scaner and hot line hot-die anemoscope, set up the inner link between these characteristic parameter and wind loads, draw the wind force coefficient C of self-elevating ocean platform
s, thus greatly reduce experimental cost.
Accompanying drawing explanation
The structural representation of the experimental system that Fig. 1 provides for the utility model embodiment;
The layout schematic diagram of electric pressure scaner in the experimental system that Fig. 2 provides for the utility model embodiment.
Embodiment
See Fig. 1, Fig. 2, the utility model embodiment provides a kind of self-elevating ocean platform wind force coefficient testing experimental system, comprising:
Experiment porch, comprises modeling wind field passage, Boundary layer simulation device and distinguished and admirable generating means;
The offshore platform model 2 that modeling wind field passage comprises ventilating duct 1 and is arranged in ventilating duct 1; Wherein, modeling wind field passage also comprises the support 3 be fixedly installed in ventilating duct 1 and the rotating disk 4 for adjusting offshore platform model 2 windward side angle be arranged on support 3, rotating disk 4 is arranged on support 3, five component pedestal balances 5 are arranged on rotating disk 4, and offshore platform model 2 is arranged on five component pedestal balances 5; Simulation air channel 1 in the present embodiment adopts square pipe;
Boundary layer simulation device comprises side direction mixing arrangement 6, momentum loss device 7 and ground roughness element 8; Side direction mixing arrangement 7 comprises vortex generator, the size of above three parts of adjustment and relative distance, come after convection current " slightly " processing through momentum loss device and side direction mixing arrangement, the air-flow that local is badly damaged smoothly gets off gradually, eddy current loss also will with height change, obtain required wind profile and turbulence structure simultaneously, realize flow velocity along height change; Meanwhile, offshore platform model is put on the rotating disk 4 of rotation, offshore platform model windward side angle can be adjusted by rotating, testing the impact of different wind angle on offshore platform model, to reach the effect of Reality simulation environmental load;
Distinguished and admirable generating means comprises fan blower 10 and is arranged on the water conservancy diversion web plate 9 of fan blower 10 outlet; By the distinguished and admirable generating means that fan blower and water conservancy diversion web plate form, produce the evenly distinguished and admirable of different wind velocity gradient;
Monitoring platform, for gather different wind velocity gradient and different wind angle wind load action under the data-signal that responds of offshore platform model 2; Comprise wind-force signals collecting and processing unit, wind pressure signal sampling and processing unit and wind velocity signal sampling and processing unit;
Wind-force signals collecting and processing unit are the five component pedestal balances 5 be placed on below offshore platform model 2, for gathering the data-signal of wind-force in wind load action process.
Wind pressure signal sampling and processing unit is pressure transducer, and the present embodiment pressure transducer adopts electric pressure scaner 12, for carrying out measurement and the data acquisition of each component multipoint pressure of offshore platform model in modeling wind field.
See Fig. 2, electric pressure scaner 12 location arrangements illustrates: arranging six wind pressure sensor measuring points, is to record the blast size of each component of ocean platform scaled model under wind load action, thus the wind force coefficient of each component of research platform.On semi-girder 21, on derrick 22, on spud leg 23, on crane 24, platform deck 25, helicopter landing platform 26, an electric pressure scaner 12 is respectively set.
Wind velocity signal sampling and processing unit is air velocity transducer, and in the present embodiment, air velocity transducer adopts hot line hot-die anemoscope 11, for carrying out measurement and the data acquisition of offshore platform model 2 each component multiple spot wind speed in modeling wind field in experimentation.
See Fig. 1, hot line hot-die anemoscope 11 position illustrates: four air velocity transducers of the location arrangements on the left of water conservancy diversion web plate 9 (i.e. hot line hot-die anemoscope 11), i.e. four measuring points, distribute in square vertices, in order to record the distinguished and admirable homogeneous winds formed through water conservancy diversion web plate 9 produced by fan blower 10, it is whether a synchronized wind profile.Three air velocity transducers (i.e. hot line hot-die anemoscope 11) measuring point is arranged along differing heights in position on the left of side direction mixing arrangement 6, and be evenly distinguished and admirable through Boundary layer simulation device in order to record, whether wind speed is along height change.
Parametric controller, for the controlling run of experiment porch and the collection analysis of experimental data; Comprise the output power for controlling blower motor thus produce under different capacity different wind velocity gradient distinguished and admirable air compressor control unit and for carrying out Real-time Collection, the data acquisition of Treatment Analysis and display and processing unit to the signal coming from monitoring platform.
By the software of internal system, computing machine is entered in collection real-time for the sensor signal at position each on experiment porch, then by internal processes, the various types of sensor signals collected are done corresponding Treatment Analysis, be finally presented at data collection type on data acquisition interface and mainly comprise wind-force signal, wind pressure signal, wind velocity signal (as waveform, amplitude frequency diagram etc.); Computing formula in computer-internal program is as follows:
1, blast computing formula: P=0.613v
2
2, the wind-force on component is acted on: F=C
hc
ssP
In formula: F is wind-force, recorded by five component pedestal balances; P is blast, can be recorded by electric pressure scaner; V is wind speed, can be recorded by hot line hot-die anemoscope; S is platform when flat floating or heeling condition, the frontal projected area of wind-engaging component; C
hfor being exposed to the height coefficient of component in wind, its value can be chosen according to member height h; C
sfor being exposed to the shape coefficient of component in wind, be tested wind force coefficient.
3, the distribution of wind speed with altitude:
V
10for the wind speed of the above 10m At The Height in sea level.The Boundary layer simulation unit simulation that namely change of this wind speed altitudinal gradient loses device by momentum, side direction mixing arrangement (comprising vortex generator), ground roughness element form.
The shape coefficient of each component is derived by three formulas above
By the induction and conclusion to experimental data, different wind speed, different wind angle, relation between platform different component and platform wind force coefficient can be drawn, build the relational model between complete wind force coefficient and external action parameter.
Claims (5)
1. a self-elevating ocean platform wind force coefficient testing experimental system, is characterized in that, comprising:
Experiment porch, comprises modeling wind field passage, Boundary layer simulation device and distinguished and admirable generating means; Described modeling wind field passage comprises ventilating duct and is arranged on the offshore platform model in described ventilating duct; Described Boundary layer simulation device comprises momentum loss device, side direction mixing arrangement and ground roughness element; Described distinguished and admirable generating means comprises fan blower and is arranged on the water conservancy diversion web plate of described blower export;
Monitoring platform, for gather different wind velocity gradient and different wind angle wind load action under the data-signal of described offshore platform model response; Comprise wind-force signals collecting and processing unit, wind pressure signal sampling and processing unit and wind velocity signal sampling and processing unit;
Parametric controller, for the controlling run of described experiment porch and the collection analysis of experimental data; Comprise the output power for controlling described blower motor thus produce under different capacity different wind velocity gradient distinguished and admirable air compressor control unit and for carrying out Real-time Collection, the data acquisition of Treatment Analysis and display and processing unit to the signal coming from described monitoring platform.
2. self-elevating ocean platform wind force coefficient testing experimental system according to claim 1, it is characterized in that, described modeling wind field passage also comprises the support be fixedly installed in described ventilating duct and the rotating disk for adjusting offshore platform model windward side angle arranged on the bracket.
3. self-elevating ocean platform wind force coefficient testing experimental system according to claim 2, is characterized in that, described wind-force signals collecting and processing unit are the five component pedestal balances be placed on below described offshore platform model.
4. self-elevating ocean platform wind force coefficient testing experimental system according to claim 2, is characterized in that, described wind pressure signal sampling and processing unit is electric pressure scaner.
5. self-elevating ocean platform wind force coefficient testing experimental system according to claim 2, is characterized in that, described wind velocity signal sampling and processing unit is hot line hot-die anemoscope.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520455242.XU CN204758251U (en) | 2015-06-29 | 2015-06-29 | From lift -type platform wind load factor testing experiment system |
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| CN201520455242.XU CN204758251U (en) | 2015-06-29 | 2015-06-29 | From lift -type platform wind load factor testing experiment system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004503A (en) * | 2015-06-29 | 2015-10-28 | 中国海洋大学 | Self-elevating type offshore platform wind load coefficient test experimental system |
| CN111060338A (en) * | 2019-12-16 | 2020-04-24 | 中国建筑科学研究院有限公司 | Experimental device and experimental method for wind load power amplification coefficient of light building envelope |
-
2015
- 2015-06-29 CN CN201520455242.XU patent/CN204758251U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004503A (en) * | 2015-06-29 | 2015-10-28 | 中国海洋大学 | Self-elevating type offshore platform wind load coefficient test experimental system |
| CN111060338A (en) * | 2019-12-16 | 2020-04-24 | 中国建筑科学研究院有限公司 | Experimental device and experimental method for wind load power amplification coefficient of light building envelope |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151111 Termination date: 20160629 |