CN1285442A - Method and apparatus for controlling raise and subsidence of barrel-shape negative-pressure foundation moveable platform - Google Patents
Method and apparatus for controlling raise and subsidence of barrel-shape negative-pressure foundation moveable platform Download PDFInfo
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Abstract
The present invention relates to the field of maine petroleum platform engneering technology, when the platform is submerged, the interior of tank-foundation can be formed into negative pressure by pumping air and water, and when the platform is floated up, the tank-foundation can be air-charged to overcome friction of silt. On the platform an inclinometer and a silt surface detection transducer, the interior of four tank-foundations is respectively equipped with ultrasonic level mater, pressure transducer and immersible pump, outlet of immeisible pump is equipped with electric valve, the pipeline is communicated with balance tank by means of electric valve, on the balance tank there are a vacuum pump and a vacuum compresson. Input end of computer is connected with inclinometer, ultrasonic level meter and pressure transducer, and its output is electrically connected with electric valve, immersible pump, vacuum pump and air compresson. Said invented platform can be moved, can be stably submerged and floated up, can implement automatic control, and possesses safety and reliability.
Description
The present invention relates to the offshore platform engineering, specifically is a kind of control method and device thereof of moveable platform floating sinking of barrel shape negative-pressure foundation.
At present, in field of ocean engineering, barrel shape negative-pressure foundation platform belongs to the brace type platform of neritic zone, 1994, Norway in the North Sea field use bucket formula negative-pressure foundation platform, the bucket base of this platform must be by boats and ships roping, marine crane barge lifting carrying out a sea bottom application worker, seat carries out the platform assembling at the end, platform do not move, floating not, sinks to the degree of depth by the artificial bucket base that monitors when platform sinks the location, regulates the levelness of platform.The location relies on manually-operated because ocean condition of construction complexity, platform are sunk, and have following problem: the levelness accuracy of (1) platform is low; (2) manually-operated easily causes error in judgement; (3) control accuracy is relatively poor.The not steady lifting of platform can cause: 1. destroy soft foundation under water, make platform be difficult to recover quiet run; 2. horizontal loadings such as wave, wind occur, influence the stability after platform sinks, may topple when serious; 3. when operation, need 3～4 artificial skilled operating platform liftings, complicated operation, labour intensity is big, reliable, poor stability.The mobility of this platform is poor, can not reuse, and makes the platform property cost than lowering greatly.
The object of the present invention is to provide a kind of safe, reliable, keep levelness and smoothness in the lifting platform process automatically, stability at the bottom of the enhancing platform base, control method and device thereof that the floating of the removable and barrel shape negative-pressure foundation moveable platform that can reuse of platform is sunk
Description of drawings of the present invention is as follows:
Accompanying drawing 1 is control method and device schematic diagram thereof;
Accompanying drawing 2 is the flow chart that sinks in the control method;
Accompanying drawing 3 is a floating flow chart in the control method;
Accompanying drawing 4 is the bucket machine automatic control system structure chart of calculating.
Control method of the present invention is to be achieved through the following technical solutions: when platform sinks in four bucket bases Gas carry out release, bleeding then forms negative pressure bucket base is sunk, be sink to seabed mud face after, the bucket base Form sealing, the basic maritime interior waters pressure of bucket raises, and by to drawing water in four bucket bases, platform continues to sink, Sink to fully in the mud of seabed; By in bucket base, inflating, form gradually malleation during the platform floating, work as gas Body buoyancy is during greater than the platform self gravitation, and platform bucket base can overcome the frictional force of barrel wall and bottom silt and rise Floating.
Control method of the present invention also is achieved through the following technical solutions:
Elder generation of platform sinking computer-chronograph system is to platform bucket base fluid position, the basic pressure of bucket, the mud face degree of depth, compensator pressure, platform X, Y angle of inclination parameter acquisition, and the border operating mode is set platform sinking height, platform floating height factually, reaches platform X, Y angle of inclination value,
When platform sinks, open vacuum pump and inlet valve, four bucket base extraction valves, vacuum pump to four bucket bases evenly bleed, pressure release, a bucket base is gone into mud, is lower than limiting value when monitoring the basic negative pressure of bucket, the monitoring mud face degree of depth reaches setting value, and is out of service; Do not reach setting value, open the submersible pump and the valve that draws water in the bucket, close vacuum pump, extraction valve; When the mud face degree of depth reaches set depth, close air valve, the valve that draws water in all vacuum pumps, submersible pump, air valve, the bucket, out of service, finish platform and sink to locating.In the sinking process of bleeding or draw water, the monitoring platform angle of inclination exceeds X, Y setting value when a side angle degree is on the low side, close drawing water or evacuating valve of relative spud leg, and platform maintenance level is sunk.
Set during the platform floating and open air compressor machine and inlet valve, four bucket base gas injection openings of valves, this moment, air compressor machine passed through the vapor liquid equilibrium jar to the gas injection of four bucket bases, and platform begins to hoist; When monitoring platform bucket base pressure, the mud face degree of depth, the mud face degree of depth reach the floating setting value, out of service; Monitoring is when reaching the floating height, and it is out of service to close all air compressor machines, inlet valve, gas injection valve, finishes the platform floating, as one jiao or a side X, just close the gas injection valve of relative side's spud leg when the Y angle is higher, the platform level steadily hoisted.
The specific embodiment of control method of the present invention
Automatic control platform sinks to locating:
Computer control system is at first carried out data acquisition to parameters such as platform bucket base fluid position, pressure, the mud face degree of depth, compensator pressure, platform X, Y angles of inclination, shows dynamic parameter with dynamic picture; Before system operation, set platform sink height and platform X, Y angle of inclination value on computers according to actual condition, come the horizontal stability and the platform submergence depth of controlling platform with this.If start platform sinking control program.The automated system operation process is as follows:
Vacuum pump and inlet valve are opened, four bucket base extraction valves are opened, this moment vacuum pump bleed to four bucket bases by the vapor liquid equilibrium jar evenly bleed, pressure release, the bucket base is gone into mud, platform begins to sink, vacuum pump is evenly bled in four bucket bases by the vapor liquid equilibrium jar, and the bucket internal pressure also is transformed into negative pressure by malleation, and platform continues to sink; Does this moment, system monitored the mud face degree of depth automatically reach setting value? if reach setting value, system is out of service automatically, if do not reach setting value, system continues operation.In the gas, system monitors liquid level in the bucket base automatically in taking out bucket, and when liquid level reached setting height in the bucket base, system promptly changes took out inner bucket water: open the 1#-4# submersible pump and the valve that draws water in the bucket, close extract system equipment vacuum pump, air valve etc.; Bleed or draw water and mainly carry out according to liquid level operating mode in the bucket base, no matter in taking out bucket in the automatic sinking process of gas and inner bucket water, system is the monitoring platform angle of inclination all the time, when any one angle exceeds X, Y setting value, system enters the automatic leveling process of platform: promptly when any one angle or a side angle degree are on the low side, just close drawing water or evacuating valve of corresponding spud leg, make platform remain level and steadily sink; When the monitoring mud face degree of depth reached set depth, whole system was closed equipment such as air valve, the valve that draws water in all vacuum pumps, submersible pump, the bucket automatically, and out of service automatically, finishes platform and sinks to locating.
The automatic control platform floating:
Computer control system is carried out data acquisition to parameters such as platform bucket base fluid position, pressure, the mud face degree of depth, compensator pressure, platform X, Y angles of inclination equally, shows dynamic parameter with dynamic picture; Before system operation, set platform height and platform X, Y angle of inclination value on computers according to actual condition, come the horizontal stability and the platform floating height of controlling platform with this.If start " the automatic floating control program of platform ".The automated system operation process is as follows:
Air compressor machine and inlet valve are opened, four bucket base gas injection openings of valves, this moment air compressor machine by the vapor liquid equilibrium jar to four even gas injections of bucket base, suppress, pressure is transformed into malleation by negative pressure, platform begins to hoist; Computer system this moment monitoring platform bucket base pressure, the mud face degree of depth and platform X, Y angle of slope at any time, when reaching the floating setting value as the puree face degree of depth, system is out of service automatically; If do not reach setting value, system continues operation; When any one exceeded setting value as X, Y angle of inclination, system entered the automatic leveling process of platform: promptly just close the gas injection valve of corresponding side's spud leg when any one jiao or a side angle degree are higher, make platform remain level and steadily hoist; When the monitoring mud face degree of depth reached the floating height, whole system was closed equipment such as all air compressor machines, inlet valve, gas injection valve automatically, and out of service automatically, finishes the automatic floating overall process of platform.
The control that the present invention sinks for the floating that realizes the barrel shape negative-pressure foundation moveable platform, provide with lower device, this device is made up of four barrels of basic negative-pressure foundation platforms 10, submersible pump 7, compensator, vacuum pump 6, air compressor 5, industrial control computers, inclinometer 1 and mud face is installed on the top of platform 10 detects transmitter 4; In four bucket bases 9, be separately installed with ultrasonic level gage 3, pressure transmitter 2 and submersible pump 7, motor operated valve 8 be housed in submersible pump 7 outlets; The pipeline of bleeding in water pipeline in four bucket bases 9, the bucket is communicated with compensator through motor operated valve 8, and vacuum pump 6, air compressor 5 are housed on compensator; The industrial control computer signal input part is electrically connected with inclinometer 1, mud face detection transmitter 4, ultrasonic level gage 3, pressure transmitter 2, and output is electrically connected with motor operated valve 8, submersible pump 7, vacuum pump 6, air compressor 5.
Apparatus of the present invention also have: in four bucket bases 9 pressure bladder can be installed, pressure bladder has the pipeline of bleeding that is communicated with compensator.
Apparatus of the present invention embodiment is as follows: the control device that the floating of barrel shape negative-pressure foundation moveable platform is sunk is made up of four barrels of basic negative-pressure foundation platforms 10, submersible pump 7, compensator, vacuum pump 6, air compressor 5, industrial control computers, inclinometer 1 is installed in the top of platform 10, vertical angle in detection platform X, two orientation of Y changes respectively, computer is counted extraction system and is gathered its signal at any time, makes the automatic leveling of platform by programme-control; Ultrasonic level gage 3 and pressure transmitter 2 are installed in the top of bucket base 9, detect that liquid level and pressure change in the bucket, in the sinking process, when liquid level is higher in the bucket: draw water, stop pumping gas; When liquid level is on the low side: bleed, stop pumping water; The mud face detects the bottom that transmitter 4 is installed in platform, and the change in elevation at the bottom of the detection platform bucket and sea level is when platform bucket base sinks to certain altitude, whole system then stops to sink automatically, otherwise when platform bucket base rises when being raised to certain altitude, whole system then stops to hoist automatically; Motor operated valve 8 is installed in respectively on the pipeline that draws water, take out in bleed in the bucket pipeline and the bucket, on the gas injection pipeline, draw water, bleed in sinking respectively and Open valve 8 when hoisting gas injection, plays the effect that platform inclination is regulated control simultaneously.
Negative-pressure foundation platform 10 is as the steel structure platform of major control object, the positioning operation that can either sink, and the floating boat that can hoist again moves; Submersible pump 7 is installed in respectively in four bucket bases of platform 10, and when platform 10 sank, pump 7 was outwards taken out inner bucket water, and four barrel-shaped one-tenth negative pressure are sunk gradually; The gas balance effect is being bled, play during gas injection to compensator; Vacuum pump 6 can be taken out a barrel interior gas.When platform sinks the location, bleed in 6 pairs of compensators of startup vacuum pump, open air valve 8 in the bucket simultaneously, can the interior negative pressure that produces of bucket be sunk respectively to bleeding in four buckets; Air compressor 5 is after the platform operation is finished, and platform is hoisted; Start gas injection in 5 pairs of compensators of air compressor, open air valve 8, respectively to gas injection in four buckets, make a barrel interior negative pressure become malleation, platform hoists gradually.
The capital equipment that the present invention uses is: CJRS-B type inclinometer; MPS-420 type ultrasonic level gage; K-GM type pressure transmitter; UHZ-D type mud face detects transmitter; HPGD-1.6 type motor operated valve; Ipe-610 type industrial control computer.
Capital equipment output signal parameter of the present invention is: inclinometer output-5V～+ the 5V d. c. voltage signal; Ultrasonic level gage, pressure transmitter, mud face detect transmitter and all export the 4-20mA dc current signal.
The function of industrial control computer is: functions such as data acquisition (the instrumentation signal is input to acquisition module, and notes the data of each time), system's control (can realize sinking to hoisting logical program control), parameter chart and dynamic menu demonstration, report output printing.
The embodiment of the industrial control computer course of work is as follows: increased the control of system to air bag in the present embodiment, air bag is that an inflatable pressure bladder is installed in bucket base 9, for the aforesaid no airbag apparatus of the present invention, only needs to remove the air bag controlled process.
Industrial computer has related parameter to carry out data acquisition to system, and storage forms historical record, and at random data are shown on the dynamic analog picture; As platform x, the variation of liquid level, pressure and other parameters in y angle of inclination, the bucket; Be that industrial computer will carry out " platform sink automatically program " and " the automatic floating program of platform " respectively in addition, with the sinking and the floating of implementation platform.Will x and y tilt angle theta 0 value at first be set according to job requirements and field condition before the execution platform sinks program automatically, the platform submergence depth is a mud face maximum depth value, air bag peak suction value, inner bucket water position peak." data acquisition module " that machine is calculated be to liquid level, pressure x, y angle, and parameters such as the mud face degree of depth are gathered at any time, remembered, redundancy, and these " programs " can distinguish independent operating.The data of gathering can be shared.Select and judge to offer in the program running.
Program running begins: by sending instructions under " main frame ", make " output control module " send control signal, start vacuum pump, vacuum pump inlet valve, and open " 1#-4# " and take out the notes air bag valve, vacuumize 4 bucket air bags this moment, makes to form negative pressure in the air bag gradually, when negative pressure value reaches capacity, stop air bag being bled, close 1#-4# and take out the notes air bag valve; Open 1#-4# bucket extraction valve simultaneously, beginning is bled in bucket, form negative pressure gradually and sink in the bucket, along with the seawater that is extruded gradually in the bucket that sinks in various degree, this moment, program judged whether the inner bucket water position reaches setting value, as water level 〉=setting value, take out inner bucket water: open the 1#-4# submersible pump (suction pump) and the valve that draws water; As water level＜setting value, then continue to take out a barrel interior gas; In the capsule gas bucket of bleeding when gas and inner bucket water, whether program monitoring platform x angle and y angle value all the time exceeds and sets system θ, if any one angle exceed setting value (be that x, y 〉=θ), program changes the leveling subprogram over to: when x and y all greater than θ
0The time, and x, y be all greater than 0, closes down the 3# bucket this moment and draw water or extraction valve, and as x＞0, drawing water or extraction valve of 2# bucket then closed down in y＜0; When x＜0, y＞0 o'clock closes down that 4# draws water or extraction valve; X＜0, y＜0 o'clock closes down that 1# draws water or extraction valve; When x 〉=θ value,, close down 3#, 4# and draw water or extraction valve as x＞0; X＜0 is closed down 1#, 4# and is drawn water or extraction valve.In program correction process, constantly monitor x, y angle, platform is constantly leveling in the sinking process, when platform sinks to putting in place, be that the mud face degree of depth reaches when setting value, close promptly that all draw water, extraction valve and vacuum pump, suction pump, finish platform process of sinking automatically.
Before carrying out the automatic floating program of platform, at first set following parameter: x and y tilt angle theta
0Value, platform floating height, i.e. mud face maximum depth value, air bag malleation limiting value.Program running begins: by sending instructions under " main frame ", make " output control module " send control signal, start air compressor machine and inlet valve, and open the 1#-4# air bag and take out the notes valve, evenly air bag gas injection in 4 buckets this moment, air bag is changed to malleation by negative pressure gradually, air bag heads on the bucket base, and makes slowly floating of platform, if gasbag pressure is greater than setting value, start the compensator atmospheric valve, gas injection is slowed down; In gas injection process, if the platform angle excursion greater than setting value, program enters the leveling subprogram: when x and y all＞θ
0The time, 1# gas injection valve is closed down in x and y＞0 o'clock; 4# gas injection valve is closed down in x＞0, y＜0; When x＜0,2# gas injection valve is closed down in y＞0 o'clock; X＜0,3# gas injection valve is closed down in y＜0 o'clock; When x＞θ value only, 1# is closed down, 4# gas injection valve in x＞0 o'clock; 2#, 3# gas injection valve are closed down in x＜0 o'clock; When y＞θ value only, 1# is closed down, 2# gas injection valve in y＞0 o'clock; 3#, 4# gas injection valve are closed down in y＜0 o'clock.In program correction process, constantly monitor x, y angle, platform is constantly leveling in the floating process, when the platform floating puts in place, when promptly the mud face degree of depth reaches setting value, promptly closes air compressor machine and all gas injection capsule valves, finishes the automatic floating process of platform one time.
The present invention has widened road for bucket foundation platform applying of exploration and development field, sea, beach, no matter be marine engineering geology platform, or pilot production platform, workover platform, for guaranteeing the mobility of platform, all there are steady sinking and the steadily requirement of floating of guaranteeing platform, the steady lifting of platform control automatically is very important, the automatic control of implementation platform, not only improve platform and moved the safety and the reliability of use, and reduced the investment risk of beach maritime works's journey, the utilization of equipping for the sea, beach has solved problem, for platform provides prospect widely in the application of beach sea exploration and development.
Claims (4)
1. the floating of the barrel shape negative-pressure foundation moveable platform control method of sinking, it is characterized in that: when platform sinks the gas in four bucket bases is carried out release, the formation negative pressure of bleeding is then sunk bucket base, after being sink to seabed mud face, bucket base forms sealing, and the basic maritime interior waters pressure of bucket raises, by to drawing water in four bucket bases, platform continues to sink, and sinks to fully in the mud of seabed; By inflating, form malleation gradually during the platform floating in bucket base, when buoyant gas during greater than platform gravity, platform bucket base can overcome the frictional force of barrel wall and bottom silt and floating.
2. the control method that the floating of barrel shape negative-pressure foundation moveable platform according to claim 1 is sunk is characterized in that:
A. platform sinking computer-chronograph system is earlier to platform bucket base fluid position, the basic pressure of bucket, the mud face degree of depth, compensator pressure, platform X, Y angle of inclination parameter acquisition, the border operating mode is set platform sinking height, platform floating height factually, reach platform X, Y angle of inclination value
When b. platform sinks, open vacuum pump and inlet valve, four bucket base extraction valves, vacuum pump to four bucket bases evenly bleed, pressure release, a bucket base is gone into mud, is lower than limiting value when monitoring the basic negative pressure of bucket, the monitoring mud face degree of depth reaches setting value, and is out of service; Do not reach setting value, open the submersible pump and the valve that draws water in the bucket, close vacuum pump, extraction valve; When the mud face degree of depth reaches set depth, close air valve, the valve that draws water in all vacuum pumps, submersible pump, the bucket, out of service, finish platform and sink to locating.In the sinking process of bleeding or draw water, the monitoring platform angle of inclination exceeds X, Y setting value when a side angle degree is on the low side, close drawing water or evacuating valve of relative spud leg, and platform maintenance level is sunk.
C. set during the platform floating and open air compressor machine and inlet valve, four bucket base gas injection openings of valves, this moment air compressor machine to the gas injection of four bucket bases, platform begins to hoist by the vapor liquid equilibrium jar; When monitoring platform bucket base pressure, the mud face degree of depth, the mud face degree of depth reach the floating setting value, out of service; Monitoring is when reaching the floating height, and it is out of service to close all air compressor machines, inlet valve, gas injection valve, finishes the platform floating, as one jiao or a side X, just close the gas injection valve of relative side's spud leg when the Y angle is higher, the platform level steadily hoisted.
3. the control device that sinks of the floating of barrel shape negative-pressure foundation moveable platform, form by four barrels of basic negative-pressure foundation platforms (10), submersible pump (7), compensator, vacuum pump (6), air compressor (5), industrial control computer, it is characterized in that: inclinometer (1) and mud face are installed on the top of platform (10) detect transmitter (4); In four bucket bases (9), be separately installed with ultrasonic level gage (3), pressure transmitter (2) and submersible pump (7), motor operated valve (8) be housed in submersible pump (7) outlet; The pipeline of bleeding in water pipeline in four bucket bases (9), the bucket is communicated with compensator through motor operated valve (8), and vacuum pump (6), air compressor (5) are housed on compensator; The industrial control computer signal input part is electrically connected with inclinometer (1), mud face detection transmitter (4), ultrasonic level gage (3), pressure transmitter (2), and output is electrically connected with motor operated valve (8), submersible pump (7), vacuum pump (6), air compressor (5).
4. the control device that the floating of barrel shape negative-pressure foundation moveable platform according to claim 3 is sunk, it is characterized in that: in four bucket bases (9) pressure bladder can be installed, pressure bladder has the pipeline of bleeding that is communicated with compensator.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00124978 CN1209534C (en) | 2000-09-29 | 2000-09-29 | Method and apparatus for controlling raise and subsidence of barrel-shape negative-pressure foundation moveable platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00124978 CN1209534C (en) | 2000-09-29 | 2000-09-29 | Method and apparatus for controlling raise and subsidence of barrel-shape negative-pressure foundation moveable platform |
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| CN1209534C CN1209534C (en) | 2005-07-06 |
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| CN101169663B (en) * | 2007-11-02 | 2010-06-02 | 上海市基础工程有限公司 | Pneumatic caisson air pressure automatic regulation system |
| CN102080371A (en) * | 2009-11-27 | 2011-06-01 | 三一电气有限责任公司 | Support leg and mobile offshore work platform |
| CN102425182A (en) * | 2011-12-01 | 2012-04-25 | 中国水电顾问集团华东勘测设计研究院 | Annular negative pressure foundation cofferdam and construction method thereof |
| CN102561286A (en) * | 2010-12-20 | 2012-07-11 | 三一电气有限责任公司 | Suction penetration control system |
| CN102561285A (en) * | 2010-12-20 | 2012-07-11 | 三一电气有限责任公司 | Suction penetration control method |
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| CN101169663B (en) * | 2007-11-02 | 2010-06-02 | 上海市基础工程有限公司 | Pneumatic caisson air pressure automatic regulation system |
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| CN101429770A (en) * | 2008-10-31 | 2009-05-13 | 中国科学院力学研究所 | Barrel base reinforcing method in calcareous sand |
| CN102080371A (en) * | 2009-11-27 | 2011-06-01 | 三一电气有限责任公司 | Support leg and mobile offshore work platform |
| CN102561286A (en) * | 2010-12-20 | 2012-07-11 | 三一电气有限责任公司 | Suction penetration control system |
| CN102561285A (en) * | 2010-12-20 | 2012-07-11 | 三一电气有限责任公司 | Suction penetration control method |
| CN102425182B (en) * | 2011-12-01 | 2014-02-12 | 中国水电顾问集团华东勘测设计研究院 | Annular negative pressure foundation cofferdam and construction method thereof |
| CN102425182A (en) * | 2011-12-01 | 2012-04-25 | 中国水电顾问集团华东勘测设计研究院 | Annular negative pressure foundation cofferdam and construction method thereof |
| CN102776883A (en) * | 2011-12-29 | 2012-11-14 | 中国石油大学(北京) | Self-elevating type platform buoyant pile shoe with function of reducing resistance in pile pulling |
| CN102776883B (en) * | 2011-12-29 | 2015-03-18 | 中国石油大学(北京) | Self-elevating type platform buoyant pile shoe with function of reducing resistance in pile pulling |
| CN107288114A (en) * | 2016-03-31 | 2017-10-24 | 周俊麟 | A kind of small ocean platform jack up spud leg |
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