CN205100189U - Adopt under water device that jet stream wind control jacket platform bank trash ice piles up - Google Patents
Adopt under water device that jet stream wind control jacket platform bank trash ice piles up Download PDFInfo
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- CN205100189U CN205100189U CN201520874530.9U CN201520874530U CN205100189U CN 205100189 U CN205100189 U CN 205100189U CN 201520874530 U CN201520874530 U CN 201520874530U CN 205100189 U CN205100189 U CN 205100189U
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- under water
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- ice
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Abstract
The utility model discloses an adopt under water device that jet stream wind control jacket platform bank trash ice piles up, including setting up a plurality of nozzles of air injection under water of presetting elevation department apart from the sea level below, a plurality of nozzles of air injection under water arrange respectively and take place criss -cross regional department and the key region of piling up of trash ice at inboard four angle point position departments, the broken ice piton body and the conductor tube array of being close to of skew bank geometric centre's bank middle part, conductor tube array, and the jet direction of air injection nozzle is vertical upwards under water for all, all under water the air injection nozzle all be connected with air compressor, air compressor lays on the platform deck of cellar. The utility model discloses the basic condition that results in the bank trash ice process of piling up to rely on can be directly destroyed, and then the fast -developing source basis of process forfeiture of piling up on water of trash ice piece is caused. The utility model discloses can carry out floating ice accumulational prevention and control before the bank to the jacket platform in china's shallow water heavy ice district.
Description
Technical field
The utility model belongs to field of ocean engineering, relates to a kind of floating ice that prevents and the device piled up occurs in jacket platform bank.
Background technology
In the ocean in the whole world, the distribution area of sea ice is 3,770 ten thousand square kilometres, accounts for 11.8% of global ocean surface.If add distribution marine site, iceberg, then the sea-ice area comprising floating ice is 7,260 ten thousand square kilometres, accounts for 22.9% of global ocean surface.As can be seen here, sea ice occupies consequence in ocean.And or short-term long-term at these is by ice-covered marine site, sea just, contained abundant marine resources, and then impelled in the last thirty years, the economic activity that various countries carry out in cold marine site is in the situation of rapid growth.Wherein, the swiftest and the most violent with the development of the utilization of the exploitation of offshore oil and gas resource, regenerable marine energy and shipping activity, all kinds of offshore engineering structures such as offshore oil and gas production platform, offshore wind farm unit stand in cold marine site in succession, and the security performance of these offshore engineering structures just must be faced with the threat of large area floating ice effect.
Jacket-type structure is the primary structure pattern that the offshore oil and gas platform in China's shallow water heavy icing area adopts at present, and this offshore engineering structure has a main feature, and namely bank is made up of a series of vertical type sleeve pipe of arranging in array pattern.Therefore, when there is large-area drift sea ice across the sea, serious trash ice accumulation occurs in jacket platform bank just becomes Sea Ice Disasters phenomenon common in China's shallow water heavy icing area.This sea-ice pile-up phenomenon can cause a series of follow-up engineering accident, therefore, must take effective measures and control the accumulation of floating ice in jacket platform bank.
At present, the control measure adopted for the trash ice accumulation of jacket platform bank comprise: one) rear artificial removing is significantly piled up in generation; Two) spray hot water to melt.Obviously on control effects, there is serious problem in these simple measures.First, once after the remarkable accumulation of trash ice generation, adopt the method for artificial removing only can intervene the trash ice layer of bushing outer surface, and be subject to the restriction in actual place, be difficult to carry out.Secondly, adopt the method for heat water-spraying usually only can be formed the top layer of icebreaker at short notice and remove, be difficult to form overall disintegrating.Meanwhile, in the winter time under temperature environment, the spray of hot water also may cause the deep layer of trash ice to freeze further, and then it is firmer to cause trash ice to be piled up.
At present, international current research shows: important rule below the accumulation process of trash ice in jacket platform bank exists: one) hesitation effect of bank local flow field is the main initial inducement forming trash ice accumulation; Two) the co-ordinative construction retention effect that formed with contiguous main key pile of bank waterproof casing array, is one of principal element impelling the fast development of trash ice accumulation scale; Three) the underwater portion scale that trash ice is piled up is greater than its above water, i.e. the main composition of trash ice accumulation under water; Four) trash ice process of piling up has very large regional imbalance, and namely most of trash ice two is arranged in conduit near zone before being all deposited in and first having an effect with ice raft; Five) trash ice pile up process once, its development speed is rapidly, touch the end formula pile up generally can be formed in a short period of time; Six) with fastest developing speed, largest trash ice piles up behavior, occurs in the process of ice raft conductive pipe shelf structure bank and the nearest side of main key pile advancing.Therefore, for overcurrent power and the dive motion control of trash ice, become the critical goals of effectively control ice technology.But, pile up in control measure at existing jacket platform bank trash ice at present, not yet occur the method that can realize these critical goals.
Summary of the invention
The utility model provides a kind of device adopting jet-stream wind under water to control jacket platform bank trash ice to pile up for solving in known technology the technical problem that exists, and this device can prevent from floating ice from dive occurring in jacket platform bank piling up.
The technical scheme that the utility model is taked for the technical problem existed in solution known technology is: a kind of device adopting jet-stream wind under water to control the trash ice accumulation of jacket platform bank, comprise and be arranged on multiple nozzles of jet-impingement under water that distance b.s.l. presets elevation place, described in multiple under water jet-impingement nozzle be arranged in depart from bank geometric center bank in the middle part of, near four corner location places inside waterproof casing array, there is the region place that intersects and trash ice emphasis build-up areas in ice breaking cone and waterproof casing array, described in all, the jet direction of jet-impingement nozzle is straight up under water, described in all, jet-impingement nozzle is connected with air compressor by high pressure draught transfer pipeline under water, and described air compressor is placed on platform deck of cellar.
Described in all, the elevation on jet-impingement nozzle distance sea level is 2.5m under water, and the internal diameter of all described nozzles is 45mm.
Described high pressure draught transfer pipeline comprises the delivery main be connected with described air compressor, the conveying arm be connected with each nozzle and is arranged on the by-pass valve control in described air compressor exit, described delivery main is connected with all described conveying arms, the internal diameter of described delivery main and described conveying arm is 120mm, and the space that described delivery main and described conveying arm enclose via waterproof casing group extends under water.
The advantage that the utility model has and good effect are: by theory analysis and experiment, grasp hummocked ice genesis mechanism, deal with problems from hummocked ice origin cause of formation source, adopt coherent high pressure draught from the key position of jet-stacking Cheng Bing under water, utilize the gas explosion effect of high pressure bubble to impel local flow field to possess larger kinergety, and then the whirlpool of key area to be generated and hesitation effect forms critical inhibitory action; Utilize air water two-phase turbulence effect significantly to contain the dive campaign of trash ice, and then effectively suppress the accumulation process under water of trash ice; Utilize the continuity of high pressure draught and close to the sufficient blasting energy had during table and influence basin, promote rubble ice and distally withdraw, discharge flow field.In sum, the utility model directly destroys the basic condition causing bank trash ice accumulation process to rely on, and then causes the accumulation process waterborne of rubble ice to lose fast-developing source base.The utility model for the jacket platform of China's shallow water heavy icing area, can carry out the prevention and corntrol that floating ice is piled up before bank, and formation scale trash ice can piled up reduces by more than 80%.
Accompanying drawing explanation
Fig. 1 is floor map of the present utility model;
Fig. 2 is elevation of the present utility model.
In figure: 1, air compressor, 2, platform deck of cellar, 3, ice breaking cone, 4, waterproof casing, 5-1,5-2,5-3,5-4,5-5,5-6,5-7, under water jet-impingement nozzle, 6-1, by-pass valve control, 6-2, delivery main, 6-3, conveying arm.
Detailed description of the invention
For summary of the invention of the present utility model, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1 ~ Fig. 2, a kind of device adopting jet-stream wind under water to control the trash ice accumulation of jacket platform bank, comprise and be arranged on multiple nozzles of jet-impingement under water that distance b.s.l. presets elevation place, described in multiple under water jet-impingement nozzle be arranged in depart from bank geometric center bank in the middle part of, inside waterproof casing array near four corner location places, there is the region place that intersects and trash ice emphasis build-up areas in ice breaking cone 3 and waterproof casing array, described in all, the jet direction of jet-impingement nozzle is straight up under water; Described in all, jet-impingement nozzle is connected with air compressor 1 by high pressure draught transfer pipeline under water, and described air compressor 1 is placed on platform deck of cellar 2.
In the present embodiment, in the middle part of the bank of departing from geometric center position, bank, 1 jet-impingement nozzle 5-1 is under water arranged, to avoid covering of center waterproof casing 4 pairs of bubble perturbation actions; Near the position of four angle points inside waterproof casing array, 4 jet-impingement nozzle 5-2,5-3,5-4,5-5 are under water set, occur to arrange 1 jet-impingement nozzle 5-6 under water in the region that intersects at ice breaking cone 3 and waterproof casing array, specifically, under water jet-impingement nozzle 5-6 be arranged in ice breaking cone 3 and and its close waterproof casing 4 between position, to form the priority control to co-ordinative construction retention effect; Under water jet-impingement nozzle 5-2 and under water jet-impingement nozzle 5-3 spout line arrange 1 jet-impingement nozzle 5-7 under water near the position of jet-impingement nozzle 5-2 under water, to be formed, the enhancement mode of emphasis build-up areas is controlled.The internal diameter of 7 nozzles is 45mm.7 nozzle unifications are arranged in distance b.s.l. 2.5m elevation place.In the present embodiment, adopt 7 under water jet-impingement nozzle key position piled up to bank trash ice spray coherent high pressure draught, coherent high-pressure air source provides by being placed in the air compressor 1 be positioned on platform deck of cellar 2, and air compressor 1 is connected by high pressure draught transfer pipeline with 7 nozzles of jet-impingement under water in parallel.When significant icing phenomenon appears in marine site residing for platform, open air compressor 1.
In the present embodiment, the elevation on the spray site under water of described coherent high pressure draught i.e. above-mentioned 7 jet-impingement nozzle distance sea level is under water 2.5m.The output pressure of described coherent high pressure draught is 1500kPa, and flow is 13m
3/ min.The output temperature of described coherent high pressure draught is not less than 20 DEG C.
The output parameter of above-mentioned coherent high pressure draught in conjunction with the structure of high pressure draught transfer pipeline, and need be obtained by the output controlling air compressor 1.In the present embodiment, adopt out pump pressure 1500kPa, go out pump discharge 13m
3the air compressor of/min, as the input port equipment of high-pressure injection air-flow.According to the physical location that air compressor on platform 1 is laid, design high pressure draught transfer pipeline, as shown in Figure 2, high pressure draught transfer pipeline comprises the delivery main 6-2 be directly connected with air compressor 1, the conveying arm 6-3 be connected with each nozzle and be arranged on the by-pass valve control 6-1 in air compressor 1 exit, the internal diameter of delivery main 6-2 and conveying arm 6-3 is 120mm.Line arrangement should directly not meet ice for principle, and the space that namely delivery main 6-2 and conveying arm 6-3 should enclose via waterproof casing group extends under water.
The pipeline of the above-mentioned system of jet-impingement under water should be done regularly to start and detect, to prevent halobiontic attachment-blocking.
Principle of the present utility model is:
By arranging coherent high pressure draught spray site at key point, and make coherent high pressure draught produce gas explosion effect, air water two-phase turbulence effect, have sufficient blasting energy and influence basin at table place, gas explosion effect can impel local flow field to possess larger kinergety, and then generates the whirlpool of key area and hesitation effect forms critical inhibitory action; Air water two-phase turbulence effect significantly can contain the dive campaign of trash ice, and then effectively suppresses the accumulation process under water of trash ice.The sufficient blasting energy had at table place and influence basin, can promote rubble ice and distally withdraw, and finally discharges outside flow field.The coherent high pressure draught of the utility model employing directly destroys the basic condition causing bank trash ice accumulation process to rely on, and then causes the accumulation process waterborne of rubble ice to lose fast-developing source base.
Although be described preferred embodiment of the present utility model by reference to the accompanying drawings above; but the utility model is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; do not departing under the ambit that the utility model aim and claim protect, can also make a lot of form, these all belong within protection domain of the present utility model.
Claims (3)
1. the device adopting jet-stream wind under water to control the trash ice accumulation of jacket platform bank, it is characterized in that, comprise and be arranged on multiple nozzles of jet-impingement under water that distance b.s.l. presets elevation place, described in multiple under water jet-impingement nozzle be arranged in depart from bank geometric center bank in the middle part of, inside waterproof casing array near four corner location places, there is the region place that intersects and trash ice emphasis build-up areas in ice breaking cone and waterproof casing array, described in all, the jet direction of jet-impingement nozzle is straight up under water; Described in all, jet-impingement nozzle is connected with air compressor by high pressure draught transfer pipeline under water, and described air compressor is placed on platform deck of cellar.
2. the device of employing according to claim 1 jet-stream wind control under water jacket platform bank trash ice accumulation, it is characterized in that, described in all, the elevation on jet-impingement nozzle distance sea level is 2.5m under water, and the internal diameter of all described nozzles is 45mm.
3. the device of employing according to claim 1 jet-stream wind control under water jacket platform bank trash ice accumulation, it is characterized in that, described high pressure draught transfer pipeline comprises the delivery main be connected with described air compressor, the conveying arm be connected with each nozzle and is arranged on the by-pass valve control in described air compressor exit, described delivery main is connected with all described conveying arms, the internal diameter of described delivery main and described conveying arm is 120mm, and the space that described delivery main and described conveying arm enclose via waterproof casing group extends under water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520874530.9U CN205100189U (en) | 2015-11-05 | 2015-11-05 | Adopt under water device that jet stream wind control jacket platform bank trash ice piles up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520874530.9U CN205100189U (en) | 2015-11-05 | 2015-11-05 | Adopt under water device that jet stream wind control jacket platform bank trash ice piles up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205100189U true CN205100189U (en) | 2016-03-23 |
Family
ID=55515979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520874530.9U Expired - Fee Related CN205100189U (en) | 2015-11-05 | 2015-11-05 | Adopt under water device that jet stream wind control jacket platform bank trash ice piles up |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205100189U (en) |
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2015
- 2015-11-05 CN CN201520874530.9U patent/CN205100189U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing City, Dongcheng District Chaoyangmen No. 25 North Street P.O. Box 4705 Chinese CNOOC building Co-patentee after: Tianjin Branch of China Sea Prtroleum (China) Co., Ltd. Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Beijing City, Dongcheng District Chaoyangmen No. 25 North Street P.O. Box 4705 Chinese CNOOC building Co-patentee before: Tianjin Branch of China Sea Prtroleum (China) Co., Ltd. Patentee before: China National Offshore Oil Corporation |
|
| 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: 20160323 Termination date: 20191105 |