CN111219169A - Underwater maintainable dry working cabin - Google Patents
Underwater maintainable dry working cabin Download PDFInfo
- Publication number
- CN111219169A CN111219169A CN202010014236.6A CN202010014236A CN111219169A CN 111219169 A CN111219169 A CN 111219169A CN 202010014236 A CN202010014236 A CN 202010014236A CN 111219169 A CN111219169 A CN 111219169A
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- China
- Prior art keywords
- cabin
- underwater
- cabin body
- deck
- pressure
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0007—Equipment or details not covered by groups E21B15/00 - E21B40/00 for underwater installations
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
Abstract
The invention relates to an underwater maintainable dry working cabin, which comprises a cylindrical pressure-resistant cabin with ball seal heads at two ends, wherein the top of the pressure-resistant cabin is provided with a butt joint device, and the bottom of the pressure-resistant cabin is fixedly arranged on a ballast base through a support; a bidirectional opening and closing cabin door is arranged at the communication position of the butt joint device and the cabin body; an observation window, a wet plugging interface and a production pipeline interface are arranged on the cabin wall of the cabin body; a deck is arranged at the bottom in the cabin body, and an escalator is arranged from the deck to the bidirectional opening and closing cabin door along the cabin wall of the cabin body; the deck is provided with a control cabinet, and the cabin body at the lower part of the deck is internally provided with an oxygen candle, a carbon dioxide absorber and a storage battery. The invention has compact and reasonable structure and convenient operation, and can provide a dry normal-pressure working environment and a deep-sea in-situ maintenance working mode for underwater production system equipment. The underwater production system can provide in-situ observation and monitoring means for the underwater production system by carrying people inside, arranging an observation window, carrying an underwater acoustic communication module and the like, and becomes a cooperative control center of unmanned operation equipment of the underwater production system.
Description
Technical Field
The invention relates to the technical field of underwater operation devices, in particular to an underwater maintainable dry-type working cabin.
Background
The traditional underwater oil and gas production system needs to be maintained and repaired by means of underwater unmanned operation tools such as ROV (remote operated vehicle), AUV (autonomous underwater vehicle) and the like which are supported by a mother ship on the water surface in an auxiliary mode, and has the problems of insufficient underwater operation capability, low operation efficiency, limited operation range and influence of severe weather on the sea surface. In addition, the traditional underwater production equipment needs to resist the adverse effects caused by factors such as external water pressure, ocean current, corrosion and the like, and the production efficiency is seriously lagged behind the onshore oil and gas exploitation.
Disclosure of Invention
The applicant aims at the defects in the prior art and provides an underwater maintainable dry working cabin with a reasonable structure, which can provide a dry normal-pressure working environment and a deep-sea in-situ maintenance working mode for underwater production system equipment.
The technical scheme adopted by the invention is as follows:
an underwater maintainable dry working cabin comprises a cabin body, wherein the cabin body is a cylindrical pressure-resistant cabin with spherical seal heads at two ends, a butt joint device is arranged at a cabin opening at the top of the cabin body, and the bottom of the cabin body is fixedly arranged on a ballast base through a support; a bidirectional opening and closing cabin door is arranged at the communication position of the butt joint device and the cabin body; an observation window, a wet plugging interface and a production pipeline interface are arranged on the cabin wall of the cabin body; a deck is arranged at the bottom in the cabin body, and an escalator is arranged from the deck to the bidirectional opening and closing cabin door along the cabin wall of the cabin body; the deck is provided with a control cabinet, and the cabin body at the lower part of the deck is internally provided with an oxygen candle, a carbon dioxide absorber and a storage battery.
As a further improvement of the above technical solution:
the structure of the support is as follows: including the cover establish the annular frame on the outer wall of cabin body, the annular frame round is equipped with the arc that the hemisphere face was propped in bearing cabin body bottom, annular frame round through the bracing member with the ballast base is connected, the cabin body is connected with the bracing member through explosion bolt and fixed disk.
An equipment storage area for storing underwater production equipment is arranged on the deck.
And an environment monitoring system for monitoring the environment in the cabin in real time and a centralized control module for information acquisition and instruction issue are arranged in the control cabinet.
An emergency communication buoy is arranged at the top of the bidirectional opening and closing cabin door.
The invention has the following beneficial effects:
the invention has compact and reasonable structure and convenient operation, and can provide a dry normal-pressure working environment for underwater production system equipment and a working mode of deep-sea in-situ maintenance and repair. By carrying people inside, arranging an observation window, carrying an underwater acoustic communication module and the like, in-situ observation and monitoring means are provided for the underwater production system, and the underwater production system becomes a cooperative control center of unmanned operation equipment of the underwater production system. The top of the cabin body is provided with a butt joint device which can be in underwater butt joint with a manned vehicle, so that personnel entering, information acquisition, energy supply, maintenance and the like are realized, the operation mode is not influenced by sea surface storms, a normal-pressure working environment is provided for part of underwater production equipment, the operation time is prolonged, the operation efficiency is improved, and the operation reliability is enhanced. When emergency or water surface maintenance and repair are needed, the working cabin can be disconnected from the ballast chassis by detonating the explosive bolt and automatically floats to the water surface by the buoyancy of the working cabin.
Meanwhile, the invention also has the following advantages:
the top of the cabin body is provided with a docking device which can be docked with a manned vehicle underwater to realize personnel entry, information acquisition, energy supply, maintenance and the like;
the operation mode is not influenced by sea surface storms, so that the operation time can be prolonged, the operation efficiency is improved, and the operation reliability is enhanced;
when emergency or water surface maintenance and repair are needed, the working cabin can be disconnected from the ballast chassis by detonating the explosive bolt and automatically floats to the water surface by the buoyancy of the working cabin.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic structural diagram of the state of the vehicle in docking with a manned vehicle.
Fig. 3 is a front view of the present invention.
Fig. 4 is a sectional view taken along a-a in fig. 3.
Fig. 5 is a sectional view taken along section B-B in fig. 4.
Fig. 6 is a cross-sectional view taken along section C-C of fig. 4.
Fig. 7 is a view from direction D of fig. 5.
Wherein: 1. an emergency communication buoy; 2. a cabin body; 3. an observation window; 4. a production line interface; 5. a support; 6. a weight base; 7. a docking device; 8. bidirectional opening and closing of the cabin door; 9. wet plugging and unplugging the interface; 10. exploding the bolt; 11. fixing the disc; 12. a deck; 13. a control cabinet; 14. an escalator; 15. an oxygen candle; 16. a carbon dioxide absorber; 17. a battery pack; 18. a balancing valve; 51. an annular frame; 52. a diagonal brace member; 53. and (4) arc-shaped supports.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 3-7, the underwater maintainable dry-type working cabin of this embodiment includes a cabin body 2, the cabin body 2 is a cylindrical pressure-resistant cabin with spherical end sockets at both ends, a butt joint device 7 is arranged at a top cabin mouth, and the bottom is fixedly mounted on a ballast base 6 through a bracket 5; a bidirectional opening and closing cabin door 8 is arranged at the communication position of the butt joint device 7 and the cabin body 2; an observation window 3, a wet plugging interface 9 and a production pipeline interface 4 are arranged on the bulkhead of the cabin body 2; a deck 12 is arranged at the bottom in the cabin body 2, and an escalator 14 is arranged from the deck 12 to the bidirectional opening and closing cabin door 8 along the cabin wall of the cabin body 2; a control cabinet 13 is arranged on the deck 12, and an oxygen candle 15, a carbon dioxide absorber 16 and a storage battery pack 17 are arranged in the cabin body 2 at the lower part of the deck 12.
The structure of the bracket 5 is as follows: the device comprises an annular frame 51 sleeved on the outer wall of a cabin body 2, wherein the annular frame 51 is provided with an arc-shaped support 53 for supporting the bottom hemispherical surface of the cabin body 2 in a circle, the annular frame in a circle is connected with a ballast base 6 through an inclined strut rod piece 52, and the cabin body 2 is connected with the inclined strut rod piece 52 through an explosion bolt 10 and a fixed disc 11.
An environment monitoring system for monitoring the environment in the cabin in real time and a centralized control module for information acquisition and instruction issue are arranged in the control cabinet 13.
An emergency communication buoy 1 is arranged at the top of the bidirectional opening and closing cabin door 8.
The structure and the working principle of the docking device 7 of the invention are disclosed in the invention patent with the application number of 2017108420546 named as 'underwater docking device for underwater manned vehicles', which is arranged at the top of the cabin body 2 and is communicated with the cabin body 2 through a bidirectional opening and closing cabin door 8. An emergency communication buoy 1 is arranged at the top of the bidirectional opening and closing cabin door 8.
The wet plugging interface 9 is a standard underwater interface and can be connected with an external underwater acoustic communication transducer through a communication cable, a cable and the like to realize an underwater communication function.
The working principle of the invention is as follows:
the cabin body 2 is fixedly arranged at the sea bottom, part of underwater production operation equipment (originally, all the equipment are directly arranged in an underwater environment) can be arranged in the cabin body, and the equipment is connected with an external underwater production system through a production pipeline interface 4, so that a dry normal-pressure maintainable maintenance environment is provided for the equipment.
The control cabinet 13 can be communicated with external illumination, communication, detection and other equipment through a cable and a communication cable through the wet plug interface 9, and can be used for carrying out real-time communication, detection and monitoring on the underwater production system.
An in-cabin environment monitoring system is arranged in the control cabinet 13 and can monitor the in-cabin environment such as pressure, temperature and CO in real time2And O2And (5) detecting the concentration.
The battery pack 17 may supply power to the equipment within the cabin 2.
When the cabin body 2 detects a fault emergency state, the emergency buoy 1 is automatically released, and the emergency buoy 1 automatically floats to the water surface to transmit an emergency fault alarm signal.
As shown in fig. 1 and 2, in routine maintenance or upon receiving an alarm signal, the underwater manned vehicle can sail above the hull 2 to complete underwater docking through the docking device 7 and the hull 2.
After the butt joint is completed, when the bidirectional opening and closing cabin door 8 is not opened, the balance valve 18 on the cabin door is opened, so that the atmospheric environment balance between the manned vehicle and the inside of the cabin body 2 is realized, and the same atmospheric environment capable of supporting life inside the cabin body 2 and the manned vehicle is created. After the air pressure and the air pressure are balanced, the bidirectional opening and closing cabin door 8 is opened to realize the communication between the manned aircraft and the cabin body 2, and personnel enter through the upper escalator 14 and the lower escalator 14.
Personnel can carry out information acquisition and instruction issue to the interior equipment maintenance after getting into, insert through observation window 3 and pull out interface 9, production pipeline interface 4 and outside production system to wet, also can instruct outside unmanned underwater operation instrument to carry out the operation, such as the wet of ROV is pulled out under water and is inserted etc. through observing.
The storage battery pack 17 can be charged by a manned vehicle, and can also be communicated with an underwater production system outside the cabin body 2 through a cable on the wet plug interface 9 and charged by means of energy of the underwater production system.
When the operation time in the cabin is long, the manned aircraft can not be retained for a long time, the operating personnel can be reserved, the bidirectional opening and closing cabin door 8 is closed, the butt joint device 7 is disconnected, and the manned aircraft drives away temporarily. The oxygen candles 15 are lit in the cabin and the carbon dioxide absorber 16 is opened to provide life support for the crew.
After the operation in the cabin is finished, the manned aircraft is communicated with the cabin body 2 through the docking device 7, an operator opens the two-way opening and closing cabin door 8 to enter the docking device 7, closes the two-way opening and closing cabin door 8, and if the emergency buoy 1 is released, the emergency buoy 1 can be placed again, enters the manned aircraft after the operation is finished, the docking device 7 is disconnected, and the manned aircraft drives away.
The cabin body 2 is designed to be positively buoyant, and is connected with the ballast base 6 through the bracket 5 and the fixed disc 11 to maintain the negative buoyancy. The explosion bolt 10 can be detonated in the emergency state of major accidents, and the cabin body 2 automatically floats to the water surface by virtue of the positive buoyancy of the cabin body. The pipeline connection between the wet plugging interface 9 and the production pipeline interface 4 can be automatically disconnected through an automatic control system or disconnected by the pulling of the positive buoyancy of the cabin 2.
The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.
Claims (5)
1. An underwater maintainable dry working cabin, characterized in that: the pressure-resistant cabin comprises a cabin body (2), wherein the cabin body (2) is a cylindrical pressure-resistant cabin with spherical seal heads at two ends, a butt joint device (7) is arranged at a cabin opening at the top of the cabin body, and the bottom of the cabin body is fixedly arranged on a pressure weight base (6) through a support (5); a bidirectional opening and closing cabin door (8) is arranged at the communication position of the butt joint device (7) and the cabin body (2);
an observation window (3), a wet plugging interface (9) and a production pipeline interface (4) are arranged on the bulkhead of the cabin body (2); a deck (12) is arranged at the bottom in the cabin body (2), and an escalator (14) is arranged from the deck (12) to the bidirectional opening and closing cabin door (8) along the cabin wall of the cabin body (2); a control cabinet (13) is arranged on the deck (12), and an oxygen candle (15), a carbon dioxide absorber (16) and a storage battery (17) are arranged in the cabin body (2) at the lower part of the deck (12).
2. The underwater serviceable dry working cabin according to claim 1, wherein: the structure of the bracket (5) is as follows: including the cover establish ring frame (51) on the outer wall of the cabin body (2), ring frame (51) round is equipped with the arc of the hemispherical surface of bearing cabin body (2) bottom and props (53), ring frame (51) round pass through bracing member (52) with ballast base (6) are connected, and the cabin body (2) are connected with bracing member (52) through explosion bolt (10) and fixed disk (11).
3. The underwater serviceable dry working cabin according to claim 1, wherein: an equipment storage area for storing underwater production equipment is arranged on the deck (12).
4. The underwater serviceable dry working cabin according to claim 1, wherein: and an environment monitoring system for monitoring the environment in the cabin in real time and a centralized control module for information acquisition and instruction issue are arranged in the control cabinet (13).
5. The underwater serviceable dry working cabin according to claim 1, wherein: an emergency communication buoy (1) is arranged at the top of the bidirectional opening and closing cabin door (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010014236.6A CN111219169B (en) | 2020-01-07 | 2020-01-07 | Underwater maintainable dry working cabin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010014236.6A CN111219169B (en) | 2020-01-07 | 2020-01-07 | Underwater maintainable dry working cabin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111219169A true CN111219169A (en) | 2020-06-02 |
| CN111219169B CN111219169B (en) | 2021-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010014236.6A Active CN111219169B (en) | 2020-01-07 | 2020-01-07 | Underwater maintainable dry working cabin |
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| CN (1) | CN111219169B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114889785A (en) * | 2022-05-10 | 2022-08-12 | 哈尔滨工程大学 | AUV underwater dry type storage device |
| CN115835422A (en) * | 2023-02-06 | 2023-03-21 | 天津大学 | Submarine reference station capable of being maintained in situ |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1290105B (en) * | 1965-08-06 | 1969-03-06 | Shell Int Research | Immersion device, especially for working on oil drilling |
| US3512583A (en) * | 1968-02-28 | 1970-05-19 | Transworld Drilling Co | Service chamber for underwater well |
| GB1461251A (en) * | 1973-02-05 | 1977-01-13 | Vickers Intertek Ltd | Method of working under water and apparatus therefor |
| FR2410597A1 (en) * | 1977-12-01 | 1979-06-29 | Expertises Sa Cie Maritime | UNDERWATER CHAMBER AND METHOD FOR PERFORMING WORK IN A GAS ATMOSPHERE ON ELEMENTS OF ELONGATED FORM |
| CN1786544A (en) * | 2005-12-20 | 2006-06-14 | 中国海洋石油总公司 | Working cabin for drying maintain of underwater pipeline |
| US20110150623A1 (en) * | 2008-06-13 | 2011-06-23 | Pierre-Armand Thomas | Structure for transporting and installing or retrieving underwater equipment and method of transporting and of installing or retrieving underwater equipment |
| CN202703855U (en) * | 2012-05-21 | 2013-01-30 | 周建国 | Small-size civil diving operation light boat for shallow sea |
| CN103043193A (en) * | 2012-12-04 | 2013-04-17 | 上海打捞局芜湖潜水装备厂 | Deepwater open diving bell and self-rescuing method thereof |
| CN103612730A (en) * | 2013-11-22 | 2014-03-05 | 华中科技大学 | Underwater automatic releasing device |
| CN206255169U (en) * | 2016-11-02 | 2017-06-16 | 山西汾西重工有限责任公司 | Underwater detectoscope reclaims release device |
| CN107010186A (en) * | 2017-03-24 | 2017-08-04 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of Deep-sea high voltage open type maintenance unit |
| CN107444596A (en) * | 2017-09-18 | 2017-12-08 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | For the Underwater Docking Device between underwater manned ROV |
| CN110036178A (en) * | 2016-12-08 | 2019-07-19 | 动压控制有限责任公司 | Explosivity disconnects |
| CN110057347A (en) * | 2019-03-07 | 2019-07-26 | 天津大学 | A kind of preventing seabed base observation device based on ADCP measurement seawater velocity |
-
2020
- 2020-01-07 CN CN202010014236.6A patent/CN111219169B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1290105B (en) * | 1965-08-06 | 1969-03-06 | Shell Int Research | Immersion device, especially for working on oil drilling |
| US3512583A (en) * | 1968-02-28 | 1970-05-19 | Transworld Drilling Co | Service chamber for underwater well |
| GB1461251A (en) * | 1973-02-05 | 1977-01-13 | Vickers Intertek Ltd | Method of working under water and apparatus therefor |
| FR2410597A1 (en) * | 1977-12-01 | 1979-06-29 | Expertises Sa Cie Maritime | UNDERWATER CHAMBER AND METHOD FOR PERFORMING WORK IN A GAS ATMOSPHERE ON ELEMENTS OF ELONGATED FORM |
| CN1786544A (en) * | 2005-12-20 | 2006-06-14 | 中国海洋石油总公司 | Working cabin for drying maintain of underwater pipeline |
| US20110150623A1 (en) * | 2008-06-13 | 2011-06-23 | Pierre-Armand Thomas | Structure for transporting and installing or retrieving underwater equipment and method of transporting and of installing or retrieving underwater equipment |
| CN202703855U (en) * | 2012-05-21 | 2013-01-30 | 周建国 | Small-size civil diving operation light boat for shallow sea |
| CN103043193A (en) * | 2012-12-04 | 2013-04-17 | 上海打捞局芜湖潜水装备厂 | Deepwater open diving bell and self-rescuing method thereof |
| CN103612730A (en) * | 2013-11-22 | 2014-03-05 | 华中科技大学 | Underwater automatic releasing device |
| CN206255169U (en) * | 2016-11-02 | 2017-06-16 | 山西汾西重工有限责任公司 | Underwater detectoscope reclaims release device |
| CN110036178A (en) * | 2016-12-08 | 2019-07-19 | 动压控制有限责任公司 | Explosivity disconnects |
| CN107010186A (en) * | 2017-03-24 | 2017-08-04 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of Deep-sea high voltage open type maintenance unit |
| CN107444596A (en) * | 2017-09-18 | 2017-12-08 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | For the Underwater Docking Device between underwater manned ROV |
| CN110057347A (en) * | 2019-03-07 | 2019-07-26 | 天津大学 | A kind of preventing seabed base observation device based on ADCP measurement seawater velocity |
Non-Patent Citations (4)
| Title |
|---|
| YAN, ZP .ET AL: "Research on Dive Plane Trajectory Tracking Control Method of AUV Under Current Disturbance", 《10TH WORLD CONGRESS ON INTELLIGENT CONTROL AND AUTOMATION (WCICA)》 * |
| 吴雨等: "ROV工具库对接锁紧机构的设计与分析", 《海洋工程装备与技术》 * |
| 周念福等: "基于CATIA二次开发的水下平台静水力计算", 《船舶工程》 * |
| 杨农林: "《深海机械与电子技术》", 31 August 2015, 华中科技大学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114889785A (en) * | 2022-05-10 | 2022-08-12 | 哈尔滨工程大学 | AUV underwater dry type storage device |
| CN114889785B (en) * | 2022-05-10 | 2023-09-29 | 哈尔滨工程大学 | AUV (autonomous Underwater vehicle) underwater dry storage device |
| CN115835422A (en) * | 2023-02-06 | 2023-03-21 | 天津大学 | Submarine reference station capable of being maintained in situ |
| CN115835422B (en) * | 2023-02-06 | 2023-06-09 | 天津大学 | Submarine reference station capable of being maintained in situ |
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|---|---|
| CN111219169B (en) | 2021-10-29 |
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