CN204903127U - TrussSpar platform movement measures test device - Google Patents

Abstract

The utility model relates to a trussSpar platform movement measures test device, including platform hard cabin (11), platform hard cabin (11) are including the watertight drum and fix in it and constitute rectangle square tubular (6) of moon pool, have arranged detachable baffle (8) in the moon pool bottom, and the below of rectangle square tubular (6) is connected with detachable open truss (12), choosees detachable baffle (8) of different percent openings according to test requirement to adjust a plurality of hanging down according to test requirement and swing the relative position between board (9), locate to be fixed with pressure sensor (10) in bottom detachable baffle (8), follow moon pool upper portion and insert unrestrained gao yi (13 a) measuring stick, install water ressure measurement appearance (7) at the lateral wall of moon pool. The utility model discloses the motion response of under the different bottom baffle percent openings of research platform be can be used for, the reason and the inside fluidic motion change of moon pool that cause the influence are probed simultaneously.

Description

A kind of Truss Spar Platform movement measures test unit

Technical field

The utility model belongs to deep-sea platform performance study technical field, is a kind of test unit studying deep-sea platform hydrodynamic performance.

Background technology

Along with the development in epoch, the mankind constantly increase for the demand of petroleum-based energy.And along with the continuous exploitation of On shore Oil Development, China's On shore Oil Development presents trend deficient gradually, but offshore oil exploration and exploitation technology also achieves significant progress.Right marine oil reserves are huge, but offshore oil exploitation is but faced with great number of issues.The floating ocean platform of traditional type is difficult to meet job requirements along with its location of continuous increasing of operating depth and exercise performance, and all kinds of fixed platform is limited to the factor such as construction costs and deadweight again mostly.Compliant type ocean platform is through constantly research and exploration are widely used and develop.Spar platform relies on its excellent exercise performance and design feature to be widely used in marine resources development as a kind of compliant type ocean platform.Wherein there is the center well running through whole main body from bottom to top in part Spar platform, is called the moon pool of Spar platform.According to the production requirement of reality, the cloth such as standpipe and drilling outfit is inner built in moon pool, thus be half opening form by moon pool bottom baffle design.The form of bottom baffle half opening makes moon pool internal flow be connected with outside, and moon pool internal sea quality and main platform body quality magnitude are suitable, makes the coupled motions of moon pool fluid and main platform body become an important research topic.Find through research, the perforate situation of the baffle plate of moon pool bottom produces larger impact for the motion of TrussSpar platform.

The current research for Spar platform moon pool, is reduced to spring-quality model by the fluid of moon pool inside mostly and Pendulum Model is studied, and seldom carries out complete dynamic coupled motions research, cannot consider the overall performance under the effect of each factor even summation.And also only have studied the impact of moon pool on Platform movement in the test carried out, careful research is carried out in the motion seldom for moon pool internal flow, caused by this complicacy mainly causing internal flow to move due to the complicacy of structure.

Utility model content

The purpose of this utility model is to design a kind of test unit can inquired into moon pool structure bottom baffle and affect Platform movement.This device can study the motor imagination of different bottom baffle percentage of open area lower platform, probes into the motion change of reason and the moon pool internal flow impacted simultaneously.The technical solution of the utility model is as follows:

A kind of TrussSpar Platform movement measures test unit, comprise platform hard cabin (11), platform hard cabin (11) comprise watertight cylinder and fixing within it and form the rectangle square tube (6) of moon pool, hollow between the two, the below of rectangle square tube (6) is connected with detachable open truss (12), open truss (12) comprises four aluminum pipes of the bottom being suspended on rectangle square tube (6), four aluminum pipes connect multiple hanging down and swings plate (9), it is characterized in that

Be furnished with detachable baffle plate (8) at moon pool bottom, select the detachable baffle plate (8) of different percentage of open area according to testing requirements, and regulate multiple relative position swung between plate (9) that hangs down according to testing requirements;

In bottom, detachable baffle plate (8) place is fixed with pressure transducer (10), and its pressure data gathered is transferred into computing machine by channel data Acquisition Instrument;

Insert wave height recorder (13) sounding rod from moon pool top, wave height recorder (13) is for measuring the change of moon pool internal liquid level, and its level change data gathered are transferred into computing machine by channel data Acquisition Instrument;

At the side-wall hole of moon pool, water proof ring watertight are installed fix, at tapping, water pressure measuring instrument (7) is installed, described water pressure measuring instrument (7) comprises and to be fixed near tapping and the target surface (16) be fitted on moon pool sidewall, the transmission lever (19) be connected with target surface, the semi-girder (17) be connected by contact point (18) with transmission lever (19), semi-girder (17) is fixed with strain pressure transducer (15), the moon pool inside water pressure signal that strain pressure transducer (15) is responded to is transferred into computing machine by channel data Acquisition Instrument, the area of section at contact point place and length are much smaller than the area of section of transmission lever (19) and semi-girder (17) and length.

Preferably, LED lamp panel (4) is fixed with on the top of platform hard cabin (11), near LED lamp panel (4), be fixed with camera (5), camera (5) is connected with computing machine by image pick-up card.

The test unit adopting the utility model to provide, the impact that different moon pool bottom baffle plate perforated area moves on Platform movement and moon pool internal flow can be studied, obtain multiple measurement result, comprising:

1, detachable bottom baffle can study the impact of bottom baffle percentage of open area, changes plate convenient and swift, can utilize the agent structure of spar platform efficiently;

2, utilize the image of 3 infrared light sources in camera collection LED lamp panel, image is sent to computing machine;

3, the moon pool internal water pressure measuring instrument of moon pool sidewall employing, have employed Curve guide impeller, utilizes foil gauge accurately to measure the hydraulic pressure of moon pool internal flow, mutually can verify with the result of wave height recorder;

4, at bottom baffle place setting pressure sensor;

5, detachable open truss-frame structure, can arbitrarily convert hangs down swings the arrangement of plate, reduces the impact of scale effect for moon pool fluid flow inside, improves the accuracy of test.Meanwhile, can also measure different hang down swing plate array configuration on the impact of Platform movement, the efficiency utilization of implementation model.

Accompanying drawing explanation

Fig. 1 is that Spar Platform movement of the present utility model measures test unit front elevation;

Fig. 2 is that Spar Platform movement of the present utility model measures test unit vertical view;

Fig. 3 is the utility model Spar main platform body schematic diagram;

Fig. 4 is the detachable bottom baffle plate schematic diagram of the different percentage of open area of the utility model, and a is 10% percentage of open area, b is 70% percentage of open area, c is full shrouding;

Fig. 5 is the detachable open truss-frame structure schematic diagram of the utility model;

Fig. 6 is the utility model sidewall---moon pool internal water pressure measuring instrument schematic diagram;

In figure: 1, platform model; 2, cross mooring system; 3, trailer; 4, LED luminous plaque; 5, camera; 6, platform moon pool; 7, sidewall---moon pool internal water pressure measuring instrument; 8, moon pool bottom cross baffle; 9, detachable hanging down swings plate; 10, moon pool bottom baffle plate pressure transducer; 11, the hard cabin of main platform body; 12, open truss-frame structure; 13, wave height recorder in moon pool; 14, full shrouding watertight wall; 15, strain pressure transducer; 16, target shape face; 17, semi-girder; 18, contact point; 19, transmission lever

Embodiment

Below in conjunction with drawings and Examples, the utility model is described in detail.

10 are formed by completely detachable platform hard cabin 11, open truss-frame structure 12, moon pool bottom cross baffle 8, moon pool internal water pressure measuring instrument 7, bottom baffle pressure transducer see Fig. 1-3 the utility model device, add and reasonably arrange wave height recorder 13, the multinomial research that can realize about main platform body and the motion of moon pool internal flow is measured.

The hard cabin structure 11 of main platform body is welded by watertight cylinder and the rectangle square tube 6 forming moon pool structure, both inner hollow, for connecting up and arranging ballast.Open circular hole at inner moon pool sidewall correct position and install full elastic water-proof lasso, water pressure measuring instrument 7 is installed at place parallel with sidewall internal face.As shown in Figure 4, select the bottom baffle of suitable percentage of open area 10%, 70% and full shrouding to carry out installing the water-tight work paid special attention under full shrouding state, in bottom, cross tapping arranges bottom baffle pressure transducer 10.Open truss-frame structure 12 4 aluminum pipes of main platform body and three pairs " three sections " formula are hung down and are swung plate 9 and form, as shown in Figure 5.

As in Fig. 1, main platform body 1 is fixed to experimental tank central authorities at centre of gravity place by the mode of cross mooring 2, mooring line adopts the form of wire rope-spring-wire rope, at main platform body top mounted LED lamp plate 4, and horizontal setting camera 5, camera 5 is fixed on support by nut, and camera bracket other end timber wedge is fixed on carriage track.In process of the test, camera is connected with computing machine by image pick-up card, by catching the motion conditions of three infrared light emission points in LED lamp panel, draws the situation that platform six-freedom degree moves.Jointly non contacted method for measuring motions is formed by LED lamp panel 4, camera 5 and computing machine, wave height recorder 13 sounding rod is inserted from moon pool top, be connected with channel data Acquisition Instrument, for measuring the change of moon pool internal liquid level, the data of channel data Acquisition Instrument collection are also admitted to computing machine.Concrete Mooring Arrangements and the wave direction of main platform body can be specified by Fig. 2.

Moon pool internal water pressure measuring instrument is as Fig. 6.

This device can complete Multitest.Comprising: moon pool bottom baffle openings area is tested the impact of Platform movement; Platform self modal coupling is tested; The impact test that moon pool bottom baffle plate moves on moon pool internal flow; Open truss hangs down and swings plate layout impact test etc.The model structure that can respond according to different testing requirementss and test objective adjustment.

Before each on-test, first individually to carry out mechanics and optical calibrating to each pressure transducer and surveying instrument.Before on-test, need connect the water pressure measuring instrument 7 in wave-height gauge 13, moon pool, moon pool bottom baffle plate pressure transducer 10, they are respectively the recording geometry of wave, Platform movement and power.In process of the test, regular wave is manufactured by wave making machine, Wave Data is gathered by platform exterior wave-height gauge, moon pool internal flow delta data is gathered by the inner wave-height gauge 13 of moon pool, obtain the stressing conditions of platform in wave by each pressure transducer, and collected the motion conditions of platform six-freedom degree in wave by non contacted method for measuring motions.After collecting enough data, stop respectively making ripple and collection, by changing wave height, wavelength to change the environmental working condition of test, carrying out moon pool bottom aperture area to Platform movement impact test by changing moon pool bottom cross baffle 8, swinging the vertical plate 9 that swings that plate arrangement studies open truss by changing to hang down the impact of Spar platform in Motion Waves is tested.

Claims (2)

1. a TrussSpar Platform movement measures test unit, comprise platform hard cabin (11), platform hard cabin (11) comprise watertight cylinder and fixing within it and form the rectangle square tube (6) of moon pool, hollow between the two, the below of rectangle square tube (6) is connected with detachable open truss (12), open truss (12) comprises four aluminum pipes of the bottom being suspended on rectangle square tube (6), four aluminum pipes connect multiple hanging down and swings plate (9), it is characterized in that

Be furnished with detachable baffle plate (8) at moon pool bottom, select the detachable baffle plate (8) of different percentage of open area according to testing requirements, and regulate multiple relative position swung between plate (9) that hangs down according to testing requirements;

In bottom, detachable baffle plate (8) place is fixed with pressure transducer (10), and its pressure data gathered is transferred into computing machine by channel data Acquisition Instrument;

Insert wave height recorder (13) sounding rod from moon pool top, wave height recorder (13) is for measuring the change of moon pool internal liquid level, and its level change data gathered are transferred into computing machine by channel data Acquisition Instrument;

At the side-wall hole of moon pool, water proof ring watertight are installed fix, at tapping, water pressure measuring instrument (7) is installed, described water pressure measuring instrument (7) comprises and to be fixed near tapping and the target surface (16) be fitted on moon pool sidewall, the transmission lever (19) be connected with target surface, the semi-girder (17) be connected by contact point (18) with transmission lever (19), semi-girder (17) is fixed with strain pressure transducer (15), the moon pool inside water pressure signal that strain pressure transducer (15) is responded to is transferred into computing machine by channel data Acquisition Instrument, the area of section at contact point place and length are much smaller than the area of section of transmission lever (19) and semi-girder (17) and length.

2. test unit according to claim 1, it is characterized in that, LED lamp panel (4) is fixed with on the top of platform hard cabin (11), near LED lamp panel (4), be fixed with camera (5), camera (5) is connected with computing machine by image pick-up card.