CN208486947U - A kind of combustion steaming united fuel system of bavin - Google Patents
A kind of combustion steaming united fuel system of bavin Download PDFInfo
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- CN208486947U CN208486947U CN201820858055.XU CN201820858055U CN208486947U CN 208486947 U CN208486947 U CN 208486947U CN 201820858055 U CN201820858055 U CN 201820858055U CN 208486947 U CN208486947 U CN 208486947U
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- lng
- heat exchanger
- bog
- diesel engine
- steam turbine
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Abstract
The utility model provides a kind of combustion steaming united fuel system of bavin, and system includes fuel system, refrigeration storage system, gas turbine generating system, diesel power generation system and steam turbine power generating.LNG and BOG comes out from LNG cargo hold, BOG is liquefied as LNG using the LNG in LNG condenser, then gas turbine, diesel engine and donkey boiler are conveyed to together with LNG in LNG condenser, heat exchanger is gasified LNG heating for BOG using the jacket-cooling water or steam turbine high-temp waste gas of diesel engine during conveying, cold energy is wherein used for when LNG heats up and gasifies the refrigeration of freezer, and BOG is used to generate electricity by gas turbine and diesel engine, water in boiler is heated as superheated steam using BOG by donkey boiler, then is transported to steam turbine and is generated electricity.The advantages of the utility model: the requirement based on system dynamic equipment to fuel pressure is different, BOG and LNG is rationally utilized, while realizing the utilization of LNG cold energy again.
Description
Technical field
Bavin, which is steamed, the utility model relates to fuel supply field more particularly to a kind of combustion for LNG cargo ship combines fuel
Supply system.
Background technique
In recent years, international regulations constantly propose new demand to ship Air Pollutant Emission, so that the LNG fuel of low pollution
Increasingly by the favor of shipowner, and the increase of the LNG quantum of international trade is so that the quantity of LNG ships that transport sharply increases.According to mesh
Preceding oil price and LNG price level saves fuel cost using diesel oil using LNG clean energy resource ratio, together under identical navigation condition
When in environmental protection, the discharge of nitrogen dioxide, carbon dioxide, sulfur dioxide and particulate matter can be effectively reduced using LNG fuel
Amount.
LNG cargo ship generallys use single LNG as main energy sources at present, and other merchant ships mostly use double fuel to send out greatly
Motivation, most LNG cargo ship is all made of steam turbine power plant, but the whole thermal efficiency of steam turbine is lower.?
During LNG cargo ship cargo transport, a large amount of BOG as propellant can be generated, therefore it is united to steam bavin using combustion
Fuel system improves the thermal efficiency of system.
It is exactly to use three kinds of gas turbine, diesel engine and steam turbine power devices that bavin association system is steamed in so-called combustion, so
The power supply that above-mentioned three kinds of power devices are generated afterwards realizes that joint promotes to marine propuision system.Combustion is steamed bavin and is fired in combination
Material supply system is exactly the system for carrying out fuel supply to gas turbine, diesel engine and steam turbine respectively.It is dynamic due to what is used
Power device increases three, can not provide using only the BOG in LNG cargo hold for gas turbine, diesel engine and steam turbine
Sufficient fuel, therefore while using BOG, it is also necessary to using the LNG in LNG cargo hold come for gas turbine, diesel engine and
Steam turbine provides fuel.Operating condition and pressure requirements difference based on gas turbine, diesel engine and steam turbine, transport LNG
Design is optimized in the application of the fuel system of ship.
Summary of the invention
The utility model is to provide a kind of combustion steaming bavin joint combustion using LNG and BOG in LNG cargo hold for LNG cargo ship
Expect supply system.The system realizes LNG and BOG to gas turbine, diesel engine and donkey boiler (to steam turbine steam supply)
Supply, while realizing and LNG cold energy is used for freezer refrigerating in LNG gasification.
The technical solution of the utility model.
A kind of combustion steaming united fuel system of bavin, including fuel system, refrigeration storage system, gas turbine power generation system
System, diesel power generation system and steam turbine power generating, wherein fuel system pumps (1,2,3,4), LNG cargo hold by transportation by lighter
(5,6,7,8), BOG compressor (9), LNG condenser (10), the first automatic valve (11), force (forcing) pump (12), First Heat Exchanger (20)
It is formed with third heat exchanger (25), wherein transportation by lighter pump (1,2,3,4) is respectively placed in the bottom of LNG cargo hold (5,6,7,8), transportation by lighter pump
The LNG conveyance conduit of (1,2,3,4) is connected after merging with LNG condenser (10), and LNG cargo hold (5,6,7,8) is located at the BOG at top
Conveyance conduit is connected after merging with BOG compressor (9), and then BOG compressor (9) is connected with LNG condenser (10), and first is automatic
Valve (11) is connected with the BOG delivery pipe at the top of LNG condenser (10), then again with the BOG delivery pipe before BOG compressor (9)
Road be connected, it is in parallel with third heat exchanger (25) after force (forcing) pump (12) is connected with First Heat Exchanger (20), then with LNG condenser
(10) the LNG delivery pipe positioned at bottom is connected, and in First Heat Exchanger (20) LNG from tube side flow through and refrigerant from shell side stream
Cross, LNG stream crosses tube side in third heat exchanger (25) and heat medium flows through shell side, heat medium be the first diesel engine (28) and
The jacket-cooling water of second diesel engine (30) or the high-temp waste gas of steam turbine (35).
Refrigeration storage system is by circulating pump (13), flow control valve (14,16,18), freezer heat exchanger (15,17,19) and first
Heat exchanger (20) forms, wherein the series pipe of first flow regulating valve (14) and the first freezer heat exchanger (15), second flow
The series pipe and third flow control valve (18) and third freezer heat exchanger of regulating valve (16) and the second freezer heat exchanger (17)
(19) it is connect with circulating pump (13) and First Heat Exchanger (20) by placed in series after series pipe is in parallel, wherein being changed first
Refrigerant selects R22 in hot device (20).
Gas turbine generating system is by the second heat exchanger (21), the first surge tank (22), gas turbine (23) and the first hair
Motor (24) composition, wherein the second heat exchanger (21), the first surge tank (22) and gas turbine (23) pass sequentially through placed in series
Connection, gas turbine (23) is connected with the first generator (24) by shaft coupling, wherein LNG is walked in the second heat exchanger (21)
Tube side and what heat medium was walked is shell side, heat medium is the jacket-cooling water of the first diesel engine (28) and the second diesel engine (30)
Or the high-temp waste gas of steam turbine (35).
Diesel power generation system is successively by the second automatic valve (26), the second surge tank (27), the first diesel engine (28), second
Diesel engine (30), the second generator (29) and third generator (31) composition, wherein the second automatic valve (26) and the second surge tank
(27) it is connected by placed in series, the admission line of the first diesel engine (28) and the second diesel engine (30) buffers after merging with second
Tank (27) is connected by placed in series, and the first diesel engine (28) is connected with the second generator (29) by shaft coupling, the second bavin
Oil machine (30) is connected with third generator (31) by shaft coupling.
Steam turbine power generating is successively by third automatic valve (32), third surge tank (33), donkey boiler (34), steam
Turbine (35) and the 4th generator (36) composition, wherein third automatic valve (32), third surge tank (33), donkey boiler (34) and
Steam turbine (35) passes sequentially through placed in series connection, and steam turbine (35) is connected with the 4th generator (36) by shaft coupling
It connects.
The admission line of second automatic valve (26) and third automatic valve (32) is connected after merging with third heat exchanger (25).
Detailed description of the invention
Fig. 1 is that the united fuel system diagram of bavin is steamed in the combustion.
In figure: 1, first the 2, second transportation by lighter of transportation by lighter pump pump 3, the 4, the 4th transportation by lighter pump of third transportation by lighter pump
5, the first LNG cargo hold 6, the 2nd LNG cargo hold 7, the 3rd LNG cargo hold 8, the 4th LNG cargo hold
9, BOG compressor 10, LNG condenser 11, the first automatic valve 12, force (forcing) pump 13, circulating pump
14, first flow regulating valve 15, the first freezer heat exchanger 16, second flow regulating valve
17, the second freezer heat exchanger 18, third flow control valve 19, third freezer heat exchanger 20, first exchange heat
Device 21, the second heat exchanger 22, the first surge tank 23, gas turbine 24, the first generator
25, third heat exchanger 26, the second automatic valve 27, the second surge tank 28, the first diesel engine
29, the second generator 30, the second diesel engine 31, third generator 32, third automatic valve
33, third surge tank 34, donkey boiler 35, steam turbine 36, the 4th generator
Specific embodiment
Specific embodiment of the present utility model is described with reference to the accompanying drawing, to more fully understand that this is practical new
Type.
For entire fuel system, BOG admission pressure needed for gas turbine (23) 2.8MPa ~ 3MPa it
Between, BOG admission pressure needed for the first diesel engine (28) and the second diesel engine (30) is between 0.5 ~ 0.8MPa, and donkey boiler
(34) the BOG admission pressure needed for is between 0.1 ~ 0.2MPa, and the BOG pressure as needed for each power device is different, so can
To carry out branch supply to each power device.
The main working process of system is.
The LNG of LNG cargo hold (5,6,7,8) bottom enters in LNG condenser (10) after transportation by lighter pump (1,2,3,4) pressurization,
And the BOG come out at the top of LNG enters after BOG compressor (9) compression in LNG condenser (10), using the cooling capacity of LNG by BOG
Condensation liquefaction is LNG, wherein, since the condensing capacity of LNG condenser (10) is insufficient, leading to part BOG in BOG condensation process
It can not liquefy, this part BOG can be such that the pressure of LNG condenser (10) increases.Accident occurs in order to prevent, can be in LNG condenser
(10) a BOG delivery pipe is connect at the top of.First automatic valve (11) is by the pressure in measurement LNG condenser (10) come control valve
The aperture of door, BOG extra in LNG condenser (10) is transported in BOG pipeline by BOG delivery pipe, is compressed again through BOG
After machine (9) compression, into condensation in LNG condenser (10), to guarantee that the interior pressure of LNG condenser (10) is stablized, to guarantee the
The admission pressure demand of one diesel engine (28), the second diesel engine (30) and donkey boiler (34), transportation by lighter pump (1,2,3,4) with
LNG and BOG can be compressed to 1MPa by BOG compressor (9).
LNG points come out from LNG condenser (10) are two-way, enter the first heat exchange after pressurized pump (12) pressurization all the way
In device (20), the refrigerant in refrigeration storage system is allowed to absorb cold energy, then LNG enters in the second heat exchanger (21), utilizes the first diesel oil
LNG gasification is BOG, BOG by the heat of the jacket-cooling water or steam turbine (35) exhaust gas of machine (28) and the second diesel engine (30)
Enter gas turbine (23) after the first surge tank (22) to burn, gas turbine (23) drives the first generator by shaft coupling
(24) it generates electricity, for the admission pressure demand for meeting gas turbine (23), while in view of passing through First Heat Exchanger (20)
With pressure loss when the second heat exchanger (21), LNG can be compressed to 3MPa with force (forcing) pump (12).
In refrigeration storage system, the refrigerant for obtaining cold energy comes out from First Heat Exchanger (20), is divided into after circulating pump (13)
Three tunnels, it is right into released cold quantity in the first freezer heat exchanger (15) all the way after the flow of first flow regulating valve (14) is adjusted
First freezer freezes；Another way enters the second freezer heat exchanger (17) after the flow of second flow regulating valve (16) is adjusted
Middle released cold quantity freezes to the second freezer；Finally enter the after the flow of third flow control valve (18) is adjusted all the way
Released cold quantity in three freezer heat exchangers (19), freezes to third freezer, wherein the optional R22 of refrigerant used in refrigeration storage system.
Another way LNG enters in third heat exchanger (25), utilizes the cylinder of the first diesel engine (28) and the second diesel engine (30)
LNG gasification is BOG by the heat of jacket water or steam turbine (35) exhaust gas, and then BOG points are two-way, automatic through second all the way
The pressure of valve (26) is adjusted with after the second surge tank (27), and two-way is divided to respectively enter the first diesel engine (28) and the second diesel engine
(30) it burns, the first diesel engine (28) and the second diesel engine (30) pass through shaft coupling and drive the second generator (29) and third respectively
Generator (31) generates electricity；Another way adjusts through the pressure of third automatic valve (32) and enters auxiliary after third surge tank (33)
Water in boiler (34) is heated into overheat and steamed by boiler (34) burning, the heat that donkey boiler (34) is generated when being burnt using BOG
Vapour supplies it to steam turbine (35), and steam turbine (35) drives the 4th generator (36) to generate electricity by shaft coupling,
In the second automatic valve (26) by the pressure of BOG in measurement diesel power generation system pipeline come the aperture of control valve so that pipe
The pressure of BOG is consistent with the inlet pressure of the first diesel engine (28) and the second diesel engine (30) in road, and third automatic valve (32) is logical
Cross in measurement donkey boiler heating system that the pressure of BOG carrys out the aperture of control valve in pipeline so that in pipeline the pressure of BOG with
The inlet pressure of donkey boiler (34) is consistent.
When LNG cargo ship is suspended, LNG, which stops supply, leads to the BOG pressure suddenly change of system pipeline, gas turbine hair
Extra BOG is conducive to keep pipe in the surge tank (22,27,33) of electric system, diesel power generation system and steam turbine system
The stabilization of gas pressure in road.
Claims (1)
1. the united fuel system of bavin is steamed in a kind of combustion, it is characterised in that: including fuel system, refrigeration storage system, combustion gas
Turbine electricity generation system, diesel power generation system and steam turbine power generating, wherein fuel system by transportation by lighter pump (1,2,3,
4), LNG cargo hold (5,6,7,8), BOG compressor (9), LNG condenser (10), the first automatic valve (11), force (forcing) pump (12), first
Heat exchanger (20) and third heat exchanger (25) composition, wherein transportation by lighter pump (1,2,3,4) is respectively placed in LNG cargo hold (5,6,7,8)
Bottom, the LNG conveyance conduit of transportation by lighter pump (1,2,3,4) are connected after merging with LNG condenser (10), LNG cargo hold (5,6,7,8) position
It is connected after the BOG conveyance conduit at top merges with BOG compressor (9), then BOG compressor (9) and LNG condenser (10) phase
Even, the first automatic valve (11) is connected with the BOG delivery pipe at the top of LNG condenser (10), then again and before BOG compressor (9)
BOG conveyance conduit be connected, it is in parallel with third heat exchanger (25) after force (forcing) pump (12) is connected with First Heat Exchanger (20), then with
The LNG delivery pipe that LNG condenser (10) is located at bottom is connected, and LNG flows through and refrigerant from tube side in First Heat Exchanger (20)
It is flowed through from shell side, LNG stream crosses tube side in third heat exchanger (25) and heat medium flows through shell side, and heat medium is the first diesel oil
The high-temp waste gas of the jacket-cooling water or steam turbine (35) of machine (28) and the second diesel engine (30)；
Refrigeration storage system is by circulating pump (13), flow control valve (14,16,18), freezer heat exchanger (15,17,19) and the first heat exchange
Device (20) composition, wherein the series pipe of first flow regulating valve (14) and the first freezer heat exchanger (15), second flow are adjusted
The series pipe and third flow control valve (18) and third freezer heat exchanger (19) of valve (16) and the second freezer heat exchanger (17)
Series pipe it is in parallel after connect with circulating pump (13) and First Heat Exchanger (20) by placed in series, wherein in First Heat Exchanger
(20) refrigerant selects R22 in；
Gas turbine generating system is by the second heat exchanger (21), the first surge tank (22), gas turbine (23) and the first generator
(24) it forms, wherein the second heat exchanger (21), the first surge tank (22) pass sequentially through placed in series with gas turbine (23) and connect,
Gas turbine (23) is connected with the first generator (24) by shaft coupling, wherein LNG walks tube side in the second heat exchanger (21)
And what heat medium was walked is shell side, heat medium is jacket-cooling water or the steaming of the first diesel engine (28) and the second diesel engine (30)
The high-temp waste gas of steam turbine (35)；
Diesel power generation system is successively by the second automatic valve (26), the second surge tank (27), the first diesel engine (28), the second diesel oil
Machine (30), the second generator (29) and third generator (31) composition, wherein the second automatic valve (26) and the second surge tank (27)
Connected by placed in series, the admission line of the first diesel engine (28) and the second diesel engine (30) merge after with the second surge tank
(27) it is connected by placed in series, the first diesel engine (28) is connected with the second generator (29) by shaft coupling, the second diesel oil
Machine (30) is connected with third generator (31) by shaft coupling；
Steam turbine power generating is successively by third automatic valve (32), third surge tank (33), donkey boiler (34), steam turbine
(35) it is formed with the 4th generator (36), wherein third automatic valve (32), third surge tank (33), donkey boiler (34) and steam
Turbine (35) passes sequentially through placed in series connection, and steam turbine (35) is connected with the 4th generator (36) by shaft coupling；
The admission line of second automatic valve (26) and third automatic valve (32) is connected after merging with third heat exchanger (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820858055.XU CN208486947U (en) | 2018-06-05 | 2018-06-05 | A kind of combustion steaming united fuel system of bavin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820858055.XU CN208486947U (en) | 2018-06-05 | 2018-06-05 | A kind of combustion steaming united fuel system of bavin |
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| Publication Number | Publication Date |
|---|---|
| CN208486947U true CN208486947U (en) | 2019-02-12 |
Family
ID=65250746
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820858055.XU Expired - Fee Related CN208486947U (en) | 2018-06-05 | 2018-06-05 | A kind of combustion steaming united fuel system of bavin |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648530A (en) * | 2021-01-06 | 2021-04-13 | 青岛科技大学 | BOG processing system of LNG transport ship |
| CN113701043A (en) * | 2021-08-27 | 2021-11-26 | 广东海洋大学 | Comprehensive system for preparing, storing and burning hydrogen on LNG ship |
-
2018
- 2018-06-05 CN CN201820858055.XU patent/CN208486947U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648530A (en) * | 2021-01-06 | 2021-04-13 | 青岛科技大学 | BOG processing system of LNG transport ship |
| CN112648530B (en) * | 2021-01-06 | 2022-04-26 | 青岛科技大学 | BOG processing system of LNG transport ship |
| CN113701043A (en) * | 2021-08-27 | 2021-11-26 | 广东海洋大学 | Comprehensive system for preparing, storing and burning hydrogen on LNG ship |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20190212 Termination date: 20200605 |