CN1477018A - Liquified natural gas transporting carrier with propeller and screw thruster - Google Patents
Liquified natural gas transporting carrier with propeller and screw thruster Download PDFInfo
- Publication number
- CN1477018A CN1477018A CNA031460984A CN03146098A CN1477018A CN 1477018 A CN1477018 A CN 1477018A CN A031460984 A CNA031460984 A CN A031460984A CN 03146098 A CN03146098 A CN 03146098A CN 1477018 A CN1477018 A CN 1477018A
- Authority
- CN
- China
- Prior art keywords
- propeller
- carrier
- electrical
- lng carrier
- spiral propeller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
- B63H25/42—Steering or dynamic anchoring by propulsive elements; Steering or dynamic anchoring by propellers used therefor only; Steering or dynamic anchoring by rudders carrying propellers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J99/00—Subject matter not provided for in other groups of this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/22—Transmitting power from propulsion power plant to propulsive elements with non-mechanical gearing
- B63H23/24—Transmitting power from propulsion power plant to propulsive elements with non-mechanical gearing electric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/32—Other parts
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Control Of Turbines (AREA)
- Control Of Eletrric Generators (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
An LNG tanker ship is provided with the propeller screw 1 driven by an electric motor acting as a power generator 2 when the tanker ship receives brake action. An electrical energy dissipator system 7 including an electric boiler 8 is electrically connected to the power generator 2.
Description
Technical field
The present invention relates to a kind of liquefied natural gas (LNG) carrier that is equipped with the screw propeller spiral propeller.
For example, the present invention relates to a kind of LNG carrier, wherein the screw propeller spiral propeller is by a direct motor drive, in case and be designed to play a part when ship promptly stops brake equipment.
Background technology
Routinely, the screw propeller spiral propeller is turned round by a steam turbine, and described steam turbine is by from providing power such as cargo-carring fossil fuel on the ship.At urgent stopping period, beginning is to deliver to steam interruption a period of time of steam turbine, and therebetween, spiral propeller is rotated by the current that flow through it.Then, carrier slows down gradually, until its speed reach one can with the compatible value of spiral propeller of rotating in the opposite direction so that the braking carrier.In case reach enough low speed, just recover gradually in such a way to deliver to the steam of steam turbine, so that spiral propeller is rotated in the opposite direction, make its braking carrier till it stops fully.Need a period of time to form hot state, so that make steam can inject such part of steam turbine, it is designed to make spiral propeller to rotate in the opposite direction, and make carrier have a speed, described speed is low to being enough to that spiral propeller can be rotated in the opposite direction, and does not make it stand the too high any danger of mechanical strees.
Promptly stop in the whole process in beginning, the screw propeller spiral propeller all is passive, and the deceleration of carrier only is to be caused and obtain along the flow friction applied of carrier hull by water, will spend segment length's time so slow down.As a result, this carrier has a very long stopping distance, because the actv. braking just takes place when urgent shut-down operation finishes.
Summary of the invention
The objective of the invention is by providing a kind of configuration to make the screw propeller spiral propeller overcome above-mentioned shortcoming in just brake equipment effect when promptly stopping to begin.
For this reason, the invention provides a kind of LNG carrier that is equipped with the screw propeller spiral propeller, this LNG carrier is characterised in that: described screw propeller spiral propeller is by a direct motor drive, and when above-mentioned LNG carrier stands glancing impact, described electrical motor plays an electrical generator effect; Reach an electric energy dissipator system conductive connection to above-mentioned electrical generator.
Advantageously, described electric energy dissipator system is made of an electric boiler, thereby has avoided necessary installation to be specifically designed to the additional equipment of clamp screw oar spiral propeller.This structure means that electrical generator just can work from promptly stopping beginning, makes the carrier deceleration so that rotatablely move by the spiral propeller of braking it, thereby makes it can significantly shorten the distance that stops.In case carrier decelerates to a certain speed, the rotation of spiral propeller is with regard to inverted orientation, so that the braking carrier is till it stops fully so.
The present invention also provide a kind of be used to make have a method of slowing down by the carrier of electric motor driven screw propeller spiral propeller, described method is characterised in that: when the LNG carrier stands glancing impact, electrical motor is rotated by the propeller spiral propeller; And having passed through a kind of electrical generator effect, above-mentioned electrical motor powers on the ship that electric power is added to the LNG carrier on the net.
Description of drawings
Illustrate in greater detail the present invention with reference to the accompanying drawings, described accompanying drawing illustrates one embodiment of the present of invention as limiting examples.
Unique accompanying drawing is the very simple view of LNG carrier equipment of the present invention.
The specific embodiment
In example shown in the drawings, the equipment of carrier comprises a screw propeller spiral propeller 1 that is driven by electrical motor 2.Electrical motor 2 is by electrical generator 3 power supplies, and described electrical generator 3 is by driving engine 4 rotations.Electrical generator 3 is at first supplied with electric power the electrical network 6 of carrier, connects the load 5 of power consumption from the downstream of electrical network 6, as: pump, ventilate and Lighting System, and main motor 2, secondly connected system 7 is used to produce the required high pressure steam of equipment that consumes steam on the ship.As shown in unique accompanying drawing, each electric unit 2,3,5,7 all is that the switch by its special use is connected on the electrical network 6.For example, electrical motor 2 can be by a frequency conversion and transform device 2 ' the be connected to synchronous dynamo on the electrical network 6.
In the present invention, when carrier is in when promptly stopping, the propeller spiral propeller that is driven by the water vapour that flows through it makes an electrical generator rotation, and in this example, described electrical generator is the propulsion electric machine of operating as electrical generator.In this case, the torque of electrical generator output and spiral propeller direction of rotation, so that its braking, thereby the LNG carrier is slowed down, and no matter how much speed of ship is.In the prior art, braking is to implement on the contrary by the hand of rotation that makes spiral propeller, and this need wait for that the LNG carrier decelerates to a speed, and this speed is low to being enough to the contrarotation direction.In unique accompanying drawing example illustrated, when carrier promptly stopped, as propulsion electric machine 2 and the changer 2 ' assembly of formation that is connected on the electrical network 6 of an electrical generator job, described assembly can inject electric power electrical network 6.
The electric power that is produced by electrical motor 2 during braking is refilled electrical network 6, for load 5 consumption of various reception electric power.The electric power of being exported by electrical motor 2 during braking has a frequency and voltage, and described frequency and voltage especially depend on the rotative speed of spiral propeller, and changer 2 ' above-mentioned power converter the is become frequency and the voltage of electrical network 6.
Advantageously, energy dissipator system and electrical network 6 conductive connectioies are so that absorb electric energy by electrical motor 2 outputs.For example, above-mentioned energy dissipator system can comprise one or more resistance units, is used for the electric energy of electrical motor output is transformed into heat.
In unique example shown in the drawings, energy dissipator system 7 comprises an electric boiler 8, and described electric boiler 8 is transported to high pressure steam on the ship-borne equipment 9.This ship-borne equipment is made of some the equipment that consume steam, and some part of carrier is remained under the correct temperature.For example, all remain under the correct temperature between the various LNG jars and the space between above-mentioned LNG jar and the hull, to avoid condensation by the steam feeding exciter of special use.In the present invention, electric boiler replaces the boiler of the fossil fuel igniting of this LNG carrier of general equipment, and therefore, it does not need to provide an equipment that is used for when carrier stops dissipation energy specially.More particularly, boiler 8 comprises some resistance units by electrical network 6 power supplies, so that heat the water in the C/LOOP, thereby delivers a vapor on the equipment 9 that consumes steam on the ship, and described equipment 9 makes the return condensed device 10 of above-mentioned steam.Condenser 10 is connected to a cooling loop, and described cooling loop utilizes pump 11 to draw seawater, so as in H Exch its steam of receiving of cooling, thereby with liquid water feeding electric boiler 8.Making water center on C/LOOP by a circulation pump 12 between condenser 10 and boiler 8 flows.C/LOOP also comprises a by-pass collar 13, is used to make the steam output of boiler directly to refill condenser 10.This by-pass collar gets can regulate the steam flow rate that passes condenser and boiler, and irrelevant with the consumption of the equipment 9 that consumes steam.In this embodiment, electric boiler has the advantage of the fossil fuel point hot pot stove that replaces this carrier of conventional equipment.Therefore, it does not need to provide the extra equipment that is specifically designed to the energy that dissipation propulsion electric machine 2 produced.
When wishing the maximum braking of spiral propeller, and when not having an equipment 9 to consume steam, by-pass collar 13 makes can be with the output short-circuit of boiler 8 to condenser 10, so that the energy that is produced by electrical motor 2 of dissipation maximum possible.
In example shown in the drawings, show a single dissipator system 7, but may require to install many energy dissipator systems, as: system 7.
The advantage of above-mentioned solution is that boiler 8 provides three kinds of distinct functions:
The steam that-generation ship needs.
-do the time spent when the propulsion electric machine starter/generator, by endergonic emergency stop function during braking.
-driving the function of ship time dissipation by the excess energy of propulsion electric machine 2 generations.
Claims (3)
1. LNG carrier that is equipped with screw propeller spiral propeller (1), described LNG carrier is characterised in that: when it stands glancing impact, above-mentioned spiral propeller (1) is by a direct motor drive, and described electrical motor plays an electrical generator (2); A kind of electric energy dissipator system (7) comprises an electric boiler (8), and described electric boiler 8 conductive connectioies are to above-mentioned electrical generator (2).
2. according to the LNG carrier of claim 1, wherein above-mentioned electric boiler (8) is associated with condenser (10) by cooled with seawater.
3. method that is used to make the LNG carrier to slow down, described carrier has a screw propeller spiral propeller (1) that is driven by electrical motor (2), when the LNG carrier stands glancing impact, electrical motor is rotated by screw propeller, said method is characterised in that: by playing an electrical generator (2), above-mentioned motor feeds electrical power on the ship of LNG carrier on the electrical network (6).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0209439A FR2842783B1 (en) | 2002-07-25 | 2002-07-25 | METHANIER EQUIPPED WITH A PROPULSION PROPELLER |
| FR0209439 | 2002-07-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1477018A true CN1477018A (en) | 2004-02-25 |
| CN100519330C CN100519330C (en) | 2009-07-29 |
Family
ID=30011471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031460984A Expired - Fee Related CN100519330C (en) | 2002-07-25 | 2003-07-22 | Liquified natural gas transporting carrier with propeller and screw thruster |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4247065B2 (en) |
| KR (1) | KR100971309B1 (en) |
| CN (1) | CN100519330C (en) |
| FR (1) | FR2842783B1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102791572A (en) * | 2009-12-18 | 2012-11-21 | Bi.Nav.研究和开发有限公司 | Electric propulsion system for leisure boats, and method for managing the same |
| CN103402867A (en) * | 2010-12-31 | 2013-11-20 | Abb有限公司 | Propulsion system |
| CN104787288A (en) * | 2015-03-27 | 2015-07-22 | 上海新实达高速游艇制造有限公司 | Ship integrated power system |
| CN107908188A (en) * | 2017-11-10 | 2018-04-13 | 北京臻迪科技股份有限公司 | A kind of brake control method of floating mobile body, device and floating mobile body |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100922007B1 (en) | 2007-10-09 | 2009-10-14 | 대우조선해양 주식회사 | Method for lng carrier operation |
| US7918696B2 (en) * | 2008-07-14 | 2011-04-05 | General Electric Company | System and method for dynamic energy recovery in marine propulsion |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR563224A (en) * | 1920-03-15 | 1923-11-29 | Thomson Houston Comp Francaise | Improvements to the electric propulsion of ships |
| US4538424A (en) * | 1984-02-15 | 1985-09-03 | Gordon G. Waltenspiel | Air cooling unit for vehicle |
-
2002
- 2002-07-25 FR FR0209439A patent/FR2842783B1/en not_active Expired - Fee Related
-
2003
- 2003-07-22 JP JP2003277464A patent/JP4247065B2/en not_active Expired - Fee Related
- 2003-07-22 CN CNB031460984A patent/CN100519330C/en not_active Expired - Fee Related
- 2003-07-25 KR KR1020030051280A patent/KR100971309B1/en not_active IP Right Cessation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102791572A (en) * | 2009-12-18 | 2012-11-21 | Bi.Nav.研究和开发有限公司 | Electric propulsion system for leisure boats, and method for managing the same |
| CN103402867A (en) * | 2010-12-31 | 2013-11-20 | Abb有限公司 | Propulsion system |
| CN104787288A (en) * | 2015-03-27 | 2015-07-22 | 上海新实达高速游艇制造有限公司 | Ship integrated power system |
| CN107908188A (en) * | 2017-11-10 | 2018-04-13 | 北京臻迪科技股份有限公司 | A kind of brake control method of floating mobile body, device and floating mobile body |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2842783A1 (en) | 2004-01-30 |
| CN100519330C (en) | 2009-07-29 |
| JP2004131060A (en) | 2004-04-30 |
| FR2842783B1 (en) | 2005-03-11 |
| KR20040010386A (en) | 2004-01-31 |
| KR100971309B1 (en) | 2010-07-20 |
| JP4247065B2 (en) | 2009-04-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: DAXIYANG SHIP-BUILDING PLANT Free format text: FORMER OWNER: ALSTOM Effective date: 20060623 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20060623 Address after: French Paley Applicant after: Alsthom Address before: France Applicant before: Alstom |
|
| ASS | Succession or assignment of patent right |
Owner name: NEW KANTOR COMPANY Free format text: FORMER OWNER: DAXIYANG SHIP-BUILDING PLANT Effective date: 20070105 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20070105 Address after: French Paley Applicant after: New Kanter Corporation Address before: French Paley Applicant before: Alsthom |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090729 Termination date: 20170722 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |