CN114013620B - A ship fuel supply system - Google Patents
A ship fuel supply system Download PDFInfo
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- CN114013620B CN114013620B CN202111296621.5A CN202111296621A CN114013620B CN 114013620 B CN114013620 B CN 114013620B CN 202111296621 A CN202111296621 A CN 202111296621A CN 114013620 B CN114013620 B CN 114013620B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
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- Ocean & Marine Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a ship fuel supply system, which comprises a fuel storage tank T, wherein a centrifugal fuel pump P is arranged in the fuel storage tank T, LNG in the fuel storage tank T is input into a low-temperature vacuum pump pool D through an ultralow-temperature pipeline by the centrifugal fuel pump P, and a high-pressure fuel pipeline and a low-pressure fuel pipeline are arranged at the downstream of the low-temperature pump pool D. The cryogenic pump provided by the invention belongs to a hydraulic pump, the whole hydraulic pump is arranged in the pump pool, and the medium is free from leakage, so that the system cold loss is effectively reduced, the vaporization amount is reduced, the optimization of the working condition of the cryogenic pump during operation is facilitated, and the pressure accumulation time of a storage tank is effectively prolonged.
Description
Technical Field
The invention relates to the technical field of fuel supply systems of ships, in particular to a ship fuel supply system provided with a high-pressure engine.
Background
In the era of economic globalization, shipping has always taken a guiding role in world trade transportation, and a force bears 90% of freight traffic, and at the same time, atmospheric pollution caused by shipping ships, massive emission of greenhouse gases and serious pollution to marine environment are caused. In order to cope with this problem, IMO has proposed a series of mandatory measures for desulfurization and denitrification of ships to cope with a serious problem in the industry of emission of ship pollutants. In recent years, IMO has placed new demands on carbon oxide emissions in marine exhaust, achieving the historical goal of 70% reduction in global shipping industry carbon strength by 2050 as compared to 2008.
In order to solve the problems of sulfur oxide emissions and nitrogen oxide emissions, each main stream marine host manufacturer such as mann and valan has successively introduced LNG dual fuel engines which can operate with not only marine fuel but also Liquefied Natural Gas (LNG). Market research has shown that LNG fuels are more economical than marine fuels and pollutant emissions are greatly reduced, and are becoming increasingly favored by shipmen.
The MAN ME-GI dual-fuel engine is a high-pressure injection two-stroke low-speed engine, can burn gas or fuel oil in any proportion, and can save fuel oil cost by 30% and reduce carbon dioxide emission by igniting natural gas through the fuel oil. The gas supply system of the machine is a high-pressure gas supply system, and the pressure of the natural gas inlet machine is about 300bar.
Disclosure of Invention
The present invention is directed to a fuel supply system for a ship, and the fuel supply system is configured to overcome the above-mentioned problems of the related art.
For this purpose, the invention adopts the following specific technical scheme:
the ship fuel supply system comprises a fuel storage tank T1, wherein a centrifugal fuel pump P1 and a centrifugal fuel pump P2 are arranged in the fuel storage tank T1, LNG in the fuel storage tank T1 is input into a low-temperature vacuum pump pool D1 through an ultralow-temperature pipeline L1, an ultralow-temperature pipeline L2 and an ultralow-temperature pipeline L3 by the centrifugal fuel pump P1 and the centrifugal fuel pump P2, a high-pressure fuel pipeline and a low-pressure fuel pipeline are arranged at the downstream of the low-temperature pump pool D1, the high-pressure fuel pipeline comprises a submerged hydraulic plunger pump P3, a submerged hydraulic plunger pump P4, a high-pressure LNG pipeline L4A, a high-pressure LNG pipeline L4B, a high-pressure LNG pipeline L5, a high-pressure heat exchanger H1, a high-pressure LNG pipeline 6L, a high-pressure buffer tank B1, a high-pressure fuel regulating valve V1, a high-pressure LNG pipeline L7, a high-pressure buffer tank B2 and a high-pressure gas supply pipeline L8, the immersed hydraulic plunger pump P3 and the immersed hydraulic plunger pump P4 are connected and communicated with the high-pressure heat exchanger H1 through the high-pressure LNG pipeline L4A, the high-pressure LNG pipeline L4B and the high-pressure LNG pipeline L5, the high-pressure heat exchanger H1 is connected and communicated with the high-pressure buffer tank B1 through the high-pressure LNG pipeline L6, the high-pressure buffer tank B1 is connected and communicated with the high-pressure buffer tank B2 through the high-pressure gas regulating valve V1 and the high-pressure LNG pipeline L7, the high-pressure buffer tank B2 is connected and communicated with a high-pressure host control valve group through a high-pressure gas supply pipeline L8, the low-pressure fuel pipeline comprises an LNG pipeline L9, a low-pressure evaporator H2, a low-pressure NG pipeline L10, a low-pressure heater H3, a low-pressure regulating valve V2, a low-pressure pipeline L11, a low-pressure buffer tank B3 and a low-pressure gas supply pipeline L12, the vacuum pump D1 is connected and communicated with the low-pressure LNG pipeline H2 through the high-pressure evaporator L9, the low-pressure evaporator H2 is connected and communicated with the low-pressure heater H3 through the low-pressure NG pipeline L10, the low-pressure heater H3 is connected and communicated with the low-pressure buffer tank B3 through the low-pressure regulating valve V1 and the low-pressure NG pipeline L11, and the low-pressure buffer tank B3 is connected with a low-pressure control valve group through the low-pressure air supply pipeline L12.
Preferably, the submerged hydraulic ram pump P3 and the submerged hydraulic ram pump P4 may be respectively installed in two separate vacuum pump tanks D2 and D3, the ultra-low temperature pipeline L1, the ultra-low temperature pipeline L2, and the ultra-low temperature pipeline L3 may be further connected and penetrated with an LNG pipeline L4A and an LNG pipeline L4B, the LNG pipeline L4A and the LNG pipeline L4B are respectively connected and penetrated with the vacuum pump tank D2 and the vacuum pump tank D3, a high-pressure fuel pipeline and a low-pressure fuel pipeline are provided downstream of the vacuum pump tank D2 and the vacuum pump tank D3, the high-pressure fuel pipeline includes an LNG pipeline L4A and an LNG pipeline L4B, one end of each of the LNG pipeline L4A and the LNG pipeline L4B is respectively connected with the submerged hydraulic ram pump P3 and the submerged hydraulic ram pump P4, the other end is connected and communicated with a high-pressure evaporator H4 through a high-pressure LNG pipeline L5, the other end of the high-pressure evaporator H4 is connected and communicated with a high-pressure heater H5 through an LNG pipeline L13, the high-pressure heater H5 is connected and communicated with a high-pressure LNG pipeline L7 and a high-pressure buffer tank B4 through a high-pressure gas regulating valve V1, the high-pressure buffer tank B4 is connected with a high-pressure host control valve group through a gas supply pipeline L8, the low-pressure pipeline comprises an LNG pipeline L15, LNG flowing out of both the vacuum pump pool D2 and the vacuum pump pool D3 is gathered into an LNG pipeline L9 through an LNG pipeline L14A and an LNG pipeline L14B, the LNG pipeline L9 is connected with a low-pressure evaporation heater H6, the low-pressure evaporation heater H6 is connected and communicated with a low-pressure buffer tank B3 through a low-pressure regulating valve V2 and a low-pressure NG 11, the low-pressure buffer tank B3 is connected with a low-pressure control valve group through the low-pressure air supply pipeline L12.
Preferably, the ship fuel in the fuel tank T1 is distributed to the pipeline L16A and the pipeline L16B via the LNG pipeline L3 and then enters the cryogenic vacuum pump tank D2 and the cryogenic vacuum pump tank D3, both the cryogenic vacuum pump tank D2 and the cryogenic vacuum pump tank D3 are respectively provided with a submerged low-temperature centrifugal pump P5 and a submerged hydraulic plunger pump P6, the cryogenic vacuum pump tank D3 is connected and communicated with the high-pressure heat exchanger H1 via a high-pressure LNG pipeline L4 and the high-pressure LNG pipeline L5, the cryogenic vacuum pump tank D2 is connected and communicated with the low-pressure evaporator H2 via the LNG pipeline L9, and the low-pressure evaporator H2 is connected and communicated with the low-pressure heater H3 via the low-pressure NG pipeline L10.
Preferably, the gas evaporated from the fuel in the fuel tank T1 is also discharged into the low-pressure fuel line through the gas phase NG line L17 and the gas phase NG line L18.
Preferably, the high-pressure buffer tank B1, the high-pressure buffer tank B2, the high-pressure buffer tank B4, and the low-pressure buffer tank B3 are each provided with a temperature sensor TT and a pressure sensor PT.
Preferably, the submerged centrifugal pump is arranged at the bottom of the fuel storage tank T1, one submerged centrifugal pump or more than 2 submerged centrifugal pumps are arranged independently, the submerged centrifugal pump is arranged in a vacuum pump pool, one hydraulic plunger pump can be independently arranged in the pump pool, two or more independent hydraulic plunger pumps can be arranged in the pump pool, or two or more than two of the hydraulic plunger pumps are independently arranged in the system after one hydraulic plunger pump is arranged in the pump pool.
Preferably, the immersed hydraulic plunger pump is provided with a set of hydraulic power control device, the hydraulic power control device can be adjusted in a variable frequency range of 10% -100%, the hydraulic power control device can provide a power source for one or more plunger pumps, and a power system of the immersed hydraulic plunger pump can adopt various modes such as pneumatic control, gear control and the like.
Preferably, the fuel in the fuel storage tank is pumped into the pump sump by a submersible centrifugal pump, the pressure in the pump sump is maintained in the range of 5-12bar gauge, and the submersible centrifugal pump is installed in the pump sump and connected with a downstream low pressure fuel line.
Preferably, the fuel vapor treatment line in the fuel line is connected to a gas phase space of the fuel tank, and a reliquefaction device or a combustion device is provided.
The invention has the beneficial effects that:
Because oil is generally used as a transmission medium, the hydraulic element has good lubrication condition, working fluid can be conveyed to any position by a pipeline, the hydraulic actuating element and the hydraulic pump are allowed to keep a certain distance, the hydraulic transmission can conveniently change the rotary motion of the prime motor into linear motion, the large-scale stepless speed regulation can be realized in the running process, the variable frequency regulation is realized within the range of 10% -100%, the load control, the speed control and the direction control are easy to realize, and the centralized control, the remote control and the automatic control can be realized. The low-temperature submerged centrifugal fuel pump P1 and the low-temperature submerged centrifugal fuel pump P2 are provided with a small occupied area, a convenient installation form, reliability, long service life period, small movement inertia, high response speed, and low-temperature submerged centrifugal fuel pump P3 and the submerged hydraulic plunger pump P4, and the low-temperature submerged centrifugal fuel pump P4 has the advantages of small occupied area, convenient and reliable installation form, no medium leakage, long service life period, small movement inertia, and high response speed, and can be used for optimizing the working condition demand of the low-temperature pump during operation, and the low-temperature submerged centrifugal fuel pump P1 and the submerged hydraulic plunger pump P4 are arranged in a safe area according to actual conditions.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a ship fuel supply system according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a marine fuel supply system according to an embodiment of the invention.
Fig. 3 is a schematic diagram III of a marine fuel supply system according to an embodiment of the invention.
Fig. 4 is a schematic diagram of a marine fuel supply system according to an embodiment of the invention.
In the figure:
T1, a fuel storage tank; L1, an ultralow temperature pipeline; L2, ultra-low temperature pipeline; L3, ultra-low temperature pipeline, L4A, high pressure LNG pipeline, L4B, high pressure LNG pipeline, L5, high pressure LNG pipeline, L6, high pressure LNG pipeline, 7, high pressure LNG pipeline, L8, high pressure air supply pipeline, L9, LNG pipeline, L10, low pressure NG pipeline, L11, low pressure NG pipeline, L12, low pressure air supply pipeline, L13, LNG pipeline, L14, high pressure LNG pipeline, L14A, LNG pipeline, L14B, LNG pipeline, L15A, LNG pipeline, L15B, LNG pipeline, L16A, L16B, pipeline, L17, gas phase NG pipeline, L18, gas phase NG pipeline, B1, high pressure buffer tank, B2, high pressure buffer tank, B3, low pressure buffer tank, B4, high pressure buffer tank, D1, low temperature vacuum pump tank, D2, low temperature vacuum pump tank, D3, low temperature vacuum pump tank, D4, low temperature vacuum pump tank, H1, high pressure heat exchanger, H2, low pressure evaporator, high pressure evaporator, liquid type fuel pump type liquid type pressure immersion type fuel type vacuum pump type vacuum type fuel pump type vacuum type pressure type vacuum type, high pressure type pressure pump vacuum type, high pressure evaporation type fuel pump type vacuum type pressure type vacuum type, high pressure pump vacuum type, high pressure vacuum pressure, vacuum, pressure, vacuum, heat, pressure, vacuum, heat, vacuum pump, vacuum, vacuum.
Detailed Description
For the purpose of further illustrating the various embodiments, the present invention provides the accompanying drawings, which are a part of the disclosure of the present invention, and which are mainly used to illustrate the embodiments and, together with the description, serve to explain the principles of the embodiments, and with reference to these descriptions, one skilled in the art will recognize other possible implementations and advantages of the present invention, wherein elements are not drawn to scale, and like reference numerals are generally used to designate like elements.
According to an embodiment of the present invention, there is provided a marine fuel supply system.
In a first embodiment, as shown in fig. 1 to 4, a ship fuel supply system according to an embodiment of the present invention includes a fuel tank T1, a submerged centrifugal fuel pump P1 and a submerged centrifugal fuel pump P2 are disposed in the fuel tank T1, the submerged centrifugal fuel pump P1 and the submerged centrifugal fuel pump P2 both input LNG in the fuel tank T1 into a low-temperature vacuum pump pool D1 through an ultralow temperature pipeline L1, an ultralow temperature pipeline L2 and an ultralow temperature pipeline L3, a high-pressure fuel pipeline and a low-pressure fuel pipeline are disposed downstream of the low-temperature vacuum pump pool D1, the high-pressure fuel pipeline includes a submerged hydraulic plunger pump P3, a submerged hydraulic plunger pump P4, a high-pressure LNG pipeline L4A, a high-pressure LNG pipeline L4B, a high-pressure LNG pipeline L5, a high-pressure heat exchanger H1, a high-pressure LNG pipeline L6, a high-pressure buffer tank B1, a high-pressure regulating valve V1, a high-pressure pipeline L7, a high-pressure buffer tank B2 and a high-pressure LNG pipeline air supply 8, the hydraulic plunger pump P3 and the immersed hydraulic plunger pump P4 are connected and communicated with the high-pressure heat exchanger H1 through the high-pressure LNG pipeline L4A, the high-pressure LNG pipeline L4B and the high-pressure LNG pipeline L5, the high-pressure heat exchanger H1 is connected and communicated with the high-pressure buffer tank B1 through the high-pressure LNG pipeline L6, the high-pressure buffer tank B1 is connected and communicated with the high-pressure buffer tank B2 through the high-pressure gas regulating valve V1 and the high-pressure LNG pipeline L7, the high-pressure buffer tank B2 is connected with a high-pressure host control valve group through a high-pressure gas supply pipeline L8, the low-pressure fuel pipeline comprises an LNG pipeline L9, a low-pressure evaporator H2, a low-pressure NG pipeline L10, a low-pressure heater H3, a low-pressure regulating valve V2, a low-pressure NG pipeline L11, a low-pressure buffer tank B3 and a low-pressure pipeline L12, the vacuum pump pool D1 is connected and communicated with the low-pressure evaporator H2 through the LNG pipeline L9, the low-pressure evaporator H2 is connected and communicated with the low-pressure heater H3 through the low-pressure NG pipeline L10, the low-pressure heater H3 is connected and communicated with the low-pressure buffer tank B3 through the low-pressure regulating valve V2 and the low-pressure NG pipeline L11, and the low-pressure buffer tank B3 is connected with a low-pressure control valve group through the low-pressure air supply pipeline L12.
In the second embodiment, the immersed hydraulic plunger pump P3 and the immersed hydraulic plunger pump P4 may be respectively installed in two separate low-temperature vacuum pump tanks D2 and D3, the ultra-low temperature pipeline L1, the ultra-low temperature pipeline L2, and the ultra-low temperature pipeline L3 may be further connected and penetrated with an LNG pipeline L15A and an LNG pipeline L15B, the LNG pipeline L15A and the LNG pipeline L15B are respectively connected and penetrated with the vacuum pump tank D2 and the vacuum pump tank D3, a high-pressure fuel pipeline and a low-pressure fuel pipeline are disposed downstream of the vacuum pump tank D2 and the vacuum pump tank D3, the high-pressure fuel pipeline includes an LNG pipeline L14A and an LNG pipeline L14B, one end of each of the LNG pipeline L14A and the LNG pipeline L14B is respectively connected with each of the immersed hydraulic plunger pump P3 and the immersed hydraulic plunger pump P4, the other end is connected and communicated with a high-pressure evaporator H4 through a high-pressure LNG pipeline L5, the other end of the high-pressure evaporator H4 is connected and communicated with a high-pressure heater H5 through an LNG pipeline L3, the high-pressure heater H5 is connected and communicated with a high-pressure LNG pipeline L7 and a high-pressure buffer tank B4 through a high-pressure gas regulating valve V1, the high-pressure buffer tank B4 is connected with a high-pressure host control valve group through a gas supply pipeline L8, the low-pressure pipeline comprises an LNG pipeline L9, LNG flowing out of both the vacuum pump pool D2 and the vacuum pump pool D3 is gathered into an LNG pipeline L9 through an LNG pipeline L14A and an LNG pipeline L14B, the LNG pipeline L9 is connected with a low-pressure evaporator H6, the low-pressure evaporator H6 is connected and communicated with a low-pressure buffer tank B3 through a low-pressure regulating valve V2 and a low-pressure pipeline L11, the low-pressure buffer tank B3 is connected with a low-pressure control valve group through the low-pressure air supply pipeline L12. As is apparent from the above-described design, the design of the anti-slip texture is relatively conventional and will not be described in detail.
In the third embodiment, the ship fuel in the fuel tank T1 is distributed to the pipeline L16A and the pipeline L16B via the LNG pipeline L3 and then enters the cryogenic vacuum pump tank D2 and the cryogenic vacuum pump tank D3, both the cryogenic vacuum pump tank D3 and the cryogenic vacuum pump tank D3 are respectively provided with a submerged low-temperature centrifugal pump P5 and a submerged hydraulic plunger pump P6, the cryogenic vacuum pump tank D3 is connected and communicated with the high-pressure heat exchanger H1 via the high-pressure LNG pipeline L4 and the high-pressure LNG pipeline L5, the cryogenic vacuum pump tank D2 is connected and communicated with the low-pressure evaporator H2 via the LNG pipeline L9, and the low-pressure evaporator H2 is connected and communicated with the low-pressure heater H3 via the low-pressure NG pipeline L10.
In the fourth embodiment, the gas evaporated from the fuel tank T1 may further pass through the gas phase NG pipeline L17 and the gas phase NG pipeline L18 and be discharged into the low pressure fuel pipeline, the high pressure buffer tank B1, the high pressure buffer tank B2, the high pressure buffer tank B3, and the high pressure buffer tank B4 may be respectively provided with a temperature sensor TT and a pressure sensor PT, the submerged centrifugal pump is disposed at the bottom of the fuel tank T1, one or more than 2 submerged hydraulic plunger pumps may be disposed independently, the submerged hydraulic plunger pumps may be installed in a vacuum pump tank, one hydraulic plunger pump may be independently installed in the pump tank, or two or more than two separate hydraulic plunger pumps may be disposed independently in the system after one pump tank is installed, the submerged hydraulic plunger pumps may be provided with a hydraulic power control device, the hydraulic power control device may provide a power source for one or more than one of the plunger pumps, the submerged hydraulic power control device may be disposed in the fuel tank, the pressure pump may be disposed in the pressure tank may be connected to the fuel tank, the pressure pump may be disposed in the vacuum pump tank, the pressure tank may be disposed in the pressure tank, and the pressure pump may be disposed in the pressure tank may be connected with the pressure pump tank, and the pressure meter may be disposed in the vacuum pump tank, and the pressure tank may be disposed in the vacuum tank, and the pressure tank may be disposed in the pressure tank. It is apparent from the above design that the low temperature submerged centrifugal fuel pump P1 and the low temperature submerged centrifugal fuel pump P2 are used in one-by-one manner to increase the safety redundancy of the system.
In order to facilitate understanding of the above technical solutions of the present invention, the following describes in detail the working principle or operation manner of the present invention in the actual process.
In summary, by means of the technical scheme, oil is generally adopted as a transmission medium, so that the hydraulic element has good lubrication condition, working fluid can be conveyed to any position by a pipeline, the hydraulic actuating element and the hydraulic pump are allowed to keep a certain distance, the hydraulic transmission can conveniently change the rotary motion of the prime mover into linear motion, the large-scale stepless speed regulation can be realized in the running process, the variable frequency regulation is realized in the range of 10% -100%, the load control, the speed control and the direction control are easy to realize, and the centralized control, the remote control and the automatic control can be realized. The low-temperature submerged centrifugal fuel pump P1 and the low-temperature submerged centrifugal fuel pump P2 are provided with a small occupied area, a convenient installation form, reliability, long service life period, small movement inertia, high response speed, low response speed, optimal operation condition requirement of the low-temperature pump, and low cost, and can be placed in a safe area according to actual conditions, the low-temperature submerged centrifugal fuel pump P1 and the low-temperature submerged centrifugal fuel pump P2 are used for increasing the safety redundancy of the system, the submerged hydraulic plunger pump P3 and the submerged hydraulic plunger pump P4 are small in occupied area, convenient and reliable in installation form, free of medium leakage, long in service life period, low in movement inertia, and good in response speed, and the submerged hydraulic plunger pump P3 and the submerged hydraulic plunger pump P4 are arranged in the pump pool, so that the vacuum pump P4 is optimally submerged in the vacuum pump.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (9)
1. The ship fuel supply system is characterized by comprising a fuel storage tank (T1), wherein a first submersible centrifugal fuel pump (P1) and a second submersible centrifugal fuel pump (P2) are arranged in the fuel storage tank (T1), LNG in the fuel storage tank (T1) is input into a low-temperature vacuum pump pool (D1) through an ultralow-temperature pipeline I (L1), an ultralow-temperature pipeline II (L2) and an ultralow-temperature pipeline III (L3) by the first submersible centrifugal fuel pump (P1) and the second submersible centrifugal fuel pump (P2), a high-pressure fuel pipeline and a low-pressure fuel pipeline are arranged at the downstream of the low-temperature vacuum pump pool (D1), the high-pressure fuel pipeline comprises a first immersed hydraulic plunger pump (P3), a second immersed hydraulic plunger pump (P4), a first high-pressure LNG pipeline (L4A), a second high-pressure LNG pipeline (L4B), a third high-pressure LNG pipeline (L5), a high-pressure heat exchanger (H1), a fourth high-pressure LNG pipeline (L6), a first high-pressure buffer tank (B1), a high-pressure fuel regulating valve (V1), a fifth high-pressure LNG pipeline (L7), a second high-pressure buffer tank (B2) and a high-pressure gas supply pipeline (L8), the first immersed hydraulic plunger pump (P3) and the second immersed hydraulic plunger pump (P4) are connected and communicated with the high-pressure heat exchanger (H1) through the first high-pressure LNG pipeline (L4A), the second high-pressure LNG pipeline (L4B) and the third high-pressure LNG pipeline (L5), the high-pressure heat exchanger (H1) is connected and communicated with the first high-pressure buffer tank (B1) through the fourth high-pressure LNG pipeline (L6), the first high-pressure buffer tank (B1) is connected and communicated with the second high-pressure buffer tank (B2) through the fifth high-pressure LNG pipeline (L7), the second high-pressure buffer tank (B2) is connected and communicated with the high-pressure host control valve group through the first high-pressure air supply pipeline (L8), the low-pressure air supply pipeline comprises a first LNG pipeline (L9), a first low-pressure evaporator (H2), a first low-pressure NG pipeline (L10), a low-pressure heater (H3), a second low-pressure NG pipeline (V2), a third low-pressure buffer tank (B3) and a third low-pressure air supply pipeline (L12), the first low-temperature vacuum pump pool (D1) is connected and communicated with the first low-pressure evaporator (H2) through the first LNG pipeline (L9), the first low-pressure evaporator (H2) is connected with the third low-pressure buffer tank (L3) through the third low-pressure buffer tank (L3), and the third low-pressure buffer tank (L3) is connected with the third low-pressure buffer tank (L3) through the first low-pressure buffer pipeline (L11).
2. The marine fuel supply system according to claim 1, wherein the submerged hydraulic ram pump one (P3) and the submerged hydraulic ram pump two (P4) are respectively installed in two separate vacuum pump tanks one (D2) and two (D3), the ultra-low temperature line one (L1), the ultra-low temperature line two (L2) and the ultra-low temperature line three (L3) are further connected and communicated with an LNG line five (L15A) and an LNG line six (L15B), the LNG line five (L15A) and the LNG line six (L15B) are respectively connected and communicated with the vacuum pump tank one (D2) and the vacuum pump tank two (D3), a high pressure fuel line and a low pressure fuel line are provided downstream of the vacuum pump tank one (D2) and the vacuum pump tank two (D3), the high pressure fuel line comprises a line three (L14A) and a four (L14B), the LNG line three (L14A) and the LNG line four (L15B) are respectively connected and communicated with the LNG pump one end (L4) of the submerged pump two (D4) and the other end (L4) of the submerged hydraulic ram pump two (D4) are respectively connected and the other end (H) of the submerged hydraulic ram pump two (D4), the high-pressure heater (H5) is connected with the high-pressure buffer tank IV (B4) through the high-pressure gas regulating valve (V1) and the high-pressure LNG pipeline V (L7), the high-pressure buffer tank IV (B4) is connected with the high-pressure host control valve bank through the high-pressure gas supply pipeline (L8), the low-pressure fuel pipeline comprises the LNG pipeline I (L9), LNG flowing out of the vacuum pump tank I (D2) and the vacuum pump tank II (D3) passes through the LNG pipeline III (L14A) and the LNG pipeline IV (L14B) and is converged into the LNG pipeline I (L9), the LNG pipeline I (L9) is connected with the low-pressure evaporator II (H6), the low-pressure evaporator II (H6) is connected with the low-pressure buffer tank III (B3) through the low-pressure regulating valve (V2), and the low-pressure pipeline II (L11) is connected with the low-pressure buffer tank III (B3) and the low-pressure buffer tank III (B3) is connected with the low-pressure control valve bank through the low-pressure pipeline L12.
3. A ship fuel supply system according to claim 2, characterized in that the ship fuel in the fuel tank (T1) is distributed via the ultra-low temperature line three (L3) to the first (L16A) and the second (L16B) lines and then into the first (D2) and the second (D3) vacuum pump tanks, respectively, both of which are provided with a submerged cryogenic centrifugal pump (P5) and a submerged hydraulic plunger pump three (P6), respectively, the second (D3) vacuum pump tank being connected through the high pressure LNG line (L4) and the third (L5) high pressure LNG line with the high pressure heat exchanger (H1), and the first (D2) vacuum pump tank being connected through the first (L9) LNG line with the first (H2) low pressure evaporator.
4. A ship fuel supply system according to claim 1, characterized in that the fuel tank (T1) is also arranged such that the fuel evaporated gas can enter the low-pressure fuel line via a gas-phase NG line one (L17) and a gas-phase NG line two (L18).
5. A ship fuel supply system according to claim 3, characterized in that the first high-pressure buffer tank (B1), the second high-pressure buffer tank (B2), the third low-pressure buffer tank (B3) and the fourth high-pressure buffer tank (B4) are each provided with a temperature sensor (TT) and a pressure sensor (PT).
6. The ship fuel supply system according to claim 5, wherein the submerged centrifugal fuel pump I (P1) and the submerged centrifugal fuel pump II (P2) are arranged at the bottom of the fuel storage tank (T1), one submerged centrifugal fuel pump I (P3), the submerged hydraulic plunger pump II (P4), the submerged hydraulic plunger pump III (P6) and the submerged low-temperature centrifugal pump P5 are arranged in the low-temperature vacuum pump tank (D1), the vacuum pump tank I (D2), the vacuum pump tank II (D3), the vacuum pump tank III (D4), the submerged hydraulic plunger pump I (P3), the submerged hydraulic plunger pump II (P4), the submerged low-temperature centrifugal pump II (P4) and the submerged low-temperature centrifugal pump II (P4) are independently arranged in the vacuum pump tank I (D2), the vacuum pump tank II (D3), the vacuum pump III (D4), and the submerged hydraulic plunger pump II (P4) or the submerged low-temperature centrifugal pump II (P4).
7. The marine fuel supply system of claim 6, wherein the variable frequency adjustment range of the first submerged hydraulic plunger pump (P3), the second submerged hydraulic plunger pump (P4) and the third submerged hydraulic plunger pump (P6) is 10% -100%, and the power system of the three is in a pneumatic control mode or a gear control mode.
8. A ship fuel supply system according to claim 7, characterized in that the pressure in the fuel tank (T1) is maintained in the range of 5-12bar gauge, and that the submersible cryogenic centrifugal pump (P5) is connected to the low-pressure fuel line downstream.
9. A ship fuel supply system according to claim 8, characterized in that a fuel boil-off gas treatment line is provided in the fuel line, which fuel boil-off gas treatment line is connected to the gas phase space of the fuel tank (T1), and in that a reliquefaction device or combustion device is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111296621.5A CN114013620B (en) | 2021-11-03 | 2021-11-03 | A ship fuel supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111296621.5A CN114013620B (en) | 2021-11-03 | 2021-11-03 | A ship fuel supply system |
Publications (2)
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| KR20150101620A (en) * | 2014-02-27 | 2015-09-04 | 삼성중공업 주식회사 | System for supplying fuel gas in ships |
| CN204170603U (en) * | 2014-06-21 | 2015-02-25 | 曹学良 | A kind of ship tail gas electro-catalysis treatment system |
| CN104265512B (en) * | 2014-09-17 | 2017-05-24 | 刘国满 | High-pressure/low-pressure gas supply system of ship power plant |
| CN204323672U (en) * | 2014-11-06 | 2015-05-13 | 青岛远洋船员职业学院 | A kind of fuel storage of LNG Power Vessel and feed system |
| WO2016122030A1 (en) * | 2015-01-30 | 2016-08-04 | 대우조선해양 주식회사 | System and method for controlling fuel supply of ship engine |
| KR20200075199A (en) * | 2018-12-17 | 2020-06-26 | 대우조선해양 주식회사 | Fuel Supply System And Method For Ship |
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