CN112178448A - Mobile LNG tank filling wharf process device system - Google Patents
Mobile LNG tank filling wharf process device system Download PDFInfo
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- CN112178448A CN112178448A CN202011236514.9A CN202011236514A CN112178448A CN 112178448 A CN112178448 A CN 112178448A CN 202011236514 A CN202011236514 A CN 202011236514A CN 112178448 A CN112178448 A CN 112178448A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
- F17C7/02—Discharging liquefied gases
- F17C7/04—Discharging liquefied gases with change of state, e.g. vaporisation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0352—Pipes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
- F17C2225/0146—Two-phase
- F17C2225/0153—Liquefied gas, e.g. LPG, GPL
- F17C2225/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0128—Propulsion of the fluid with pumps or compressors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0192—Propulsion of the fluid by using a working fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/03—Heat exchange with the fluid
- F17C2227/0302—Heat exchange with the fluid by heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/03—Control means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/043—Pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/0439—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/03—Dealing with losses
- F17C2260/035—Dealing with losses of fluid
- F17C2260/036—Avoiding leaks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/06—Fluid distribution
- F17C2265/061—Fluid distribution for supply of supplying vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0102—Applications for fluid transport or storage on or in the water
- F17C2270/0105—Ships
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0165—Applications for fluid transport or storage on the road
- F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
- F17C2270/0171—Trucks
Abstract
The invention relates to a mobile LNG tank filling wharf process unit system which comprises an LNG filling ship, an LNG filling metering unit, an EAG discharging unit, an NG/N2 purging and replacing unit, a gasification pressurizing unit, an LNG filling pump pry unit, a mobile LNG tank and a mobile walking unit, wherein the LNG filling metering unit, the EAG discharging unit, the NG/N2 purging and replacing unit, the gasification pressurizing unit and the LNG filling pump pry unit are respectively fixed on the mobile walking unit, the LNG filling metering unit is respectively and correspondingly connected with the LNG filling ship, the NG/N2 purging and replacing unit and the LNG filling pump pry unit, the NG/N2 purging and replacing unit is respectively and correspondingly connected with the LNG filling metering unit and the LNG filling pump pry unit, the gasification pressurizing unit is correspondingly connected with the LNG filling pump pry unit, the LNG filling pump pry unit is respectively and correspondingly connected with the LNG filling metering unit, the NG/N2 purging and replacing unit, The gasification pressurization unit and the movable LNG tank are correspondingly connected, and the EAG discharge unit is correspondingly connected with the LNG filling metering unit, the LNG filling pump pry unit and the movable LNG tank respectively.
Description
Technical Field
The invention relates to the technical field of LNG filling terminals, in particular to a process device system for a mobile LNG tank filling terminal.
Background
Liquefied Natural Gas (LNG), as a clean energy source, has been widely used in recent years in the industrial and civil fields of our country. Compared with the traditional fuel, the LNG is a cleaner energy source and can effectively reduce the emission of carbon dioxide, sulfur oxides and nitrogen oxides. LNG is used as a marine fuel, and the marine fuel has remarkable economical efficiency and good environmental protection performance. In recent years, China has been pushing the development of LNG powered ships to the utmost. According to guidance opinions on application of LNG in the propulsion water transportation industry issued by the department of transportation, the proportion of LNG in the energy consumption of inland river transport ships reaches more than 2% by 2015; in 2020, LNG is widely applied to ordinary cargo ships, passenger ships, harbor working ships, engineering ships and the like in main inland water areas of China, LNG application trial work of ocean transport ships is started, and the proportion of LNG in energy consumption of the inland transport ships reaches more than 10%. However, due to the influence of the factors such as incomplete supporting facilities of LNG filling docks and the like, reduced LNG price advantage, less scenic shipping market and the like, the LNG power ships in China develop insufficient power and have less development status than expected. Especially, the incomplete facilities and equipment related to the LNG filling wharf are important reasons that the number of LNG power ships is difficult to rapidly increase.
At present, the domestic LNG filling wharf comprises a shore-based LNG filling wharf and a pontoon-type LNG filling wharf, the two LNG filling process systems both need to build a fixed LNG low-temperature heat-insulation storage tank, the shore-based LNG filling wharf also needs to arrange related process filling facilities in land areas, in addition, as inland LNG transportation is not released, the LNG filling process systems cannot transport liquid supplement through ships, and can only transport liquid supplement through land area tank cars and roads, an unloading liquid supplement process facility needs to be additionally built, and the arrangement and dispersion of process unit increase BOG production and low-temperature leakage risks, so that the current domestic conventional LNG filling process mode has the inherent defects of high equipment facility building requirement, large engineering investment, high operation cost and the like.
Therefore, in view of the above-mentioned drawbacks, the present inventors have conducted extensive research and design to overcome the above-mentioned drawbacks by designing and developing a mobile LNG tank filling terminal process device system, which combines experience and results of related industries for many years.
Disclosure of Invention
Aiming at the problems, the invention provides a mobile LNG tank filling dock process device system, which effectively solves the defects in the prior art.
In order to achieve the purpose, the technical scheme applied by the invention is as follows:
a mobile LNG tank filling wharf process device system comprises an LNG filling ship, an LNG filling metering unit, an EAG discharging unit, an NG/N2 purging and replacing unit, a gasification pressurization unit, an LNG filling pump pry unit, a mobile LNG tank and a mobile walking unit, wherein the LNG filling metering unit, the EAG discharging unit, the NG/N2 purging and replacing unit, the gasification pressurization unit and the LNG filling pump pry unit are respectively fixed on the mobile walking unit, the LNG filling metering unit is respectively and correspondingly connected with the LNG filling ship, the NG/N2 purging and replacing unit and the LNG filling pump pry unit, the NG/N2 purging and replacing unit is respectively and correspondingly connected with the LNG filling metering unit and the LNG filling pump pry unit, the gasification pressurization unit is correspondingly connected with the LNG filling pump pry unit, and the LNG filling pump pry unit is respectively and correspondingly connected with the LNG filling metering unit and the NG/N2 purging and replacing unit, The gasification pressurization unit and the movable LNG tank are correspondingly connected, and the EAG discharge unit is correspondingly connected with the LNG filling metering unit, the LNG filling pump pry unit and the movable LNG tank respectively.
According to the scheme, the movable LNG tank and the movable walking unit can be used for LNG according to different conditions
The filling position and the requirement are flexibly moved on the filling wharf, and the mobile walking unit can flexibly arrange the positions of the LNG filling metering unit, the EAG discharging unit, the NG/N2 purging and replacing unit, the gasification pressurizing unit and the LNG filling pump pry unit according to different LNG filling positions and requirements.
According to the scheme, a first process pipeline, a second process pipeline, a third process pipeline and a fourth process pipeline are arranged in the LNG filling metering unit, a first breaking valve, a first manual valve, a first pneumatic valve, a second manual valve, a first check valve, a first safety valve, a third manual valve, a first flowmeter, a fourth manual valve, a first pressure transmitter, a first temperature transmitter and a second safety valve are sequentially arranged on the first process pipeline, the first process pipeline at one end of the first breaking valve is connected with a gas-phase pipeline on the LNG receiving ship through a low-temperature metal hose, the first process pipeline at one end of the second safety valve is connected with a skid unit of the LNG filling pump, the second process pipeline is sequentially provided with a second breaking valve, a fifth manual valve, a second pneumatic valve, a sixth manual valve, a second check valve, a third safety valve, a solenoid valve, a second flowmeter, a eighth manual valve, a second pressure transmitter, a second temperature transmitter and a fourth safety valve, the second process pipeline at one end of the second breaking valve is connected with a The pipeline, the process pipeline that is equipped with four one ends of relief valve is connected with LNG filling pump sled unit, be equipped with manual valve nine and check valve three on the process pipeline three in proper order, be equipped with manual valve ten and check valve four on the process pipeline four in proper order, connect between the manual valve two on the process pipeline one and the check valve one through process pipeline five between the manual valve six on the process pipeline two and the check valve two, and be equipped with manual valve seven on the process pipeline five, the one end of process pipeline three and process pipeline four all is connected between the check valve two on the process pipeline two and relief valve three, the other end of process pipeline three and process pipeline four all is connected in NG/N2 and sweeps the replacement unit.
According to the scheme, the gas phase pipeline is provided with a first interface flange which is fixedly connected with the first low-temperature metal hose, and the liquid phase pipeline is provided with a second interface flange which is fixedly connected with the second low-temperature metal hose.
According to the scheme, a process pipeline five and a discharged LNG collecting pipeline are arranged in the EAG discharging unit, a flame arrester, a manual valve eleven, a gasifier I and a manual valve twelve are sequentially arranged on the process pipeline five, and the process pipeline five with the manual valve twelve end is connected to the discharged LNG collecting pipeline.
According to the scheme, a process pipeline six, a process pipeline seven and a process pipeline eight are arranged in the NG/N2 purging and replacing unit, a pneumatic valve three, an NG buffer tank, a pressure regulating valve one, a pressure transmitter three, a temperature transmitter three, a pneumatic valve four, a vaporizer two and a pneumatic valve five are sequentially arranged on the process pipeline six, the process pipeline six provided with one end of the pneumatic valve three is connected to the process pipeline seven, the process pipeline six provided with one end of the pneumatic valve five is connected to the LNG filling pump pry unit, the process pipeline seven and the process pipeline eight are connected to the N2 tank, one end of the process pipeline seven is connected to the process pipeline three of the LNG filling metering unit, the other end of the process pipeline seven is connected to the LNG filling pump pry unit, one end of the process pipeline eight is connected to the process pipeline four of the LNG filling metering unit, and the other end of the process pipeline eight is.
According to the scheme, a process pipeline nine is arranged in the gasification pressurization unit, a pressure regulating valve II, a pressure transmitter IV, a temperature transmitter IV, a pneumatic valve VI, a gasifier III and a pneumatic valve VII are sequentially arranged on the process pipeline nine, and the air inlet end and the air outlet end of the process pipeline nine are respectively connected to the LNG filling pump pry unit.
According to the scheme, a process pipeline ten, a process pipeline eleven, a process pipeline twelve, a process pipeline thirteen, a process pipeline fourteen, a process pipeline fifteen, a process pipeline sixteen, a process pipeline seventeen, a process pipeline eighteen, a process pipeline nineteen and a process pipeline twenty are arranged in the LNG filling pump pry unit, a manual valve eighteen, a pneumatic valve nine, a manual valve twenty and a connection and disconnection valve four are sequentially arranged on the process pipeline ten, a pneumatic valve ten is arranged on the process pipeline eleven, a safety valve six, a pressure transmitter five and a temperature transmitter five are sequentially arranged on the process pipeline twelve, a check valve five and a manual valve fifteen are arranged on the process pipeline thirteen, a check valve six and a manual valve sixteen are arranged on the process pipeline fourteen, a manual valve twenty-one, a pneumatic valve eleven, a manual valve twenty-two and a disconnection valve five are sequentially arranged on the process pipeline fifteen, the system comprises a pneumatic valve eight, a manual valve seventeen and a breaking valve three, wherein a pneumatic valve thirteen and a pneumatic valve fourteen are arranged on a process pipeline seventeen, a low-temperature immersed pump is arranged between the pneumatic valve thirteen and the pneumatic valve fourteen, the low-temperature immersed pump is connected to the process pipeline eighteen and a process pipeline nineteen, a pneumatic valve twelve and a check valve seventeen are arranged on the process pipeline eighteen, a safety valve five, a pressure transmitter six and a temperature transmitter six are sequentially arranged on the process pipeline nineteen, and a manual valve nineteen and a manual valve fourteen are arranged on a.
According to the scheme, the process pipeline ten is connected to the air outlet end of the gasification pressurizing unit, the process pipeline fifteen is connected to the air inlet end of the gasification pressurizing unit, one end of the process pipeline ten is connected to the process pipeline one of the LNG filling metering unit, the other end of the process pipeline ten is connected to the gas phase port of the mobile LNG tank through the low-temperature vacuum hose, one end of the process pipeline eleven is connected to the process pipeline two of the LNG filling metering unit, the other end of the process pipeline eleven is connected between the safety valve five of the process pipeline nineteen and the pressure transmitter six, one end of the process pipeline twelve is connected to the process pipeline six of the NG/N2 purging and replacing unit, the other end of the process pipeline twelve is connected to the process pipeline eighteen, one end of the process pipeline thirteen is connected to the process pipeline seven of the NG/N2 purging and replacing unit, the other end of the, one end of a process pipeline fourteen is connected to a process pipeline eight of the NG/N2 purging replacement unit, the other end of the process pipeline fourteen is connected between a manual valve thirteen and a pneumatic valve eight of the process pipeline sixteen, one end of the process pipeline fifteen is connected between a safety valve five of the process pipeline nineteen and a pressure transmitter six, the other end of the process pipeline fifteen is connected to a pressurization liquid phase port of the mobile LNG tank through a low-temperature vacuum hose two, one end of the process pipeline sixteen is connected to a process pipeline nineteen, the other end of the process pipeline sixteen is connected to a liquid phase port of the mobile LNG tank through a low-temperature vacuum hose three, one end of the process pipeline seventeen is connected to the process pipeline ten, the other end of the process pipeline seventeen is connected to a low-temperature immersed pump, one end of the process pipeline eighteen is connected to a process pipeline eleven, the other, one end of the process pipeline twenty is connected between the manual valve eighteen and the pneumatic valve nine on the process pipeline sixteen, and the other end of the process pipeline twenty is connected between the manual valve thirteen and the pneumatic valve eight on the process pipeline sixteen.
According to the scheme, the LNG filling metering unit, the LNG filling pump pry unit and the movable LNG tank are connected to a process pipeline five of the EAG discharge unit through the diffusing openings.
The invention has the beneficial effects that:
1) aiming at different wharf types and configuration conditions of injection ports of injected ships, all LNG injection process functions are integrated, installed and arranged and form an integrated structure with a mobile travelling mechanism, unnecessary LNG low-temperature pipeline exposure arrangement is reduced, the generation amount of BOG is reduced from the source, the mobile travelling mechanism and a mobile LNG tank box are combined to be flexibly arranged according to actual conditions of an injection wharf field, and the adaptability of injection operation is stronger;
2) the LNG filling metering unit, the gasification pressurizing unit and the LNG filling pump pry unit are controlled in an integrated mode, signal data of pressure transmitters, temperature transmitters and flow transmitters of all systems are collected, the efficiency of a gasifier of the gasification pressurizing unit and the working curve of an immersed pump of the LNG filling pump pry unit are controlled in a coordinated mode, and the purpose of safe, efficient and quantitative LNG filling is achieved;
3) the NG/N2 purging and replacing unit is used for purging and replacing residual LNG through NG, then purging and replacing the pipeline and equipment of the process system for purging inerted LNG by using N2, and the safety risk of leakage of residual liquid due to overflow and dripping is avoided;
4) the EAG discharging unit collects all safety valve outlet pipelines including the movable LNG tank and heats and discharges LNG to the temperature of-107 ℃ through the gasifier, so that the density of the LNG is lower than that of air, and the risk of low-temperature NG gas gathering at a low position is avoided;
5) the LNG filling, storage and transportation process facilities do not need to be built and fixed, operation is convenient, the filling device and the movable LNG tank are dragged and dropped to the designated positions, the process pipeline is connected, and the LNG filling amount is set, so that filling operation can be carried out.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a block diagram of an LNG filling and metering unit of the present invention;
FIG. 3 is a block diagram of the EAG bleed unit of the present invention;
FIG. 4 is a schematic diagram of the NG/N2 purge replacement unit of the present invention;
FIG. 5 is a block diagram of the gasification pressurizing unit of the present invention;
fig. 6 is a block diagram of an LNG refueling skid unit of the present invention.
An LNG injection ship; 11. a gas phase line; 12. an interface flange I; 13. a liquid phase line; 14. a second interface flange; 2, an LNG filling metering unit; 21. breaking the first valve; 22. a first manual valve; 23. a first pneumatic valve; 24. a second manual valve; 25. a first check valve; 26. a first safety valve; 27. a manual valve III; 28. a first flowmeter; 29. a manual valve IV; 210. a first pressure transmitter; 211. a first temperature transmitter; 212. a second safety valve; 213. breaking the valve II; 214. a fifth manual valve; 215. a second pneumatic valve; 216. a manual valve VI; 217. a manual valve seventh; 218. a second check valve; 219. a safety valve III; 220. an electromagnetic valve; 221. a second flowmeter; 222. eighth manual valve; 223. a second pressure transmitter; 224. a second temperature transmitter; 225. a safety valve IV; 226. a manual valve nine; 227. a check valve III; 228. a manual valve ten; 229. a check valve IV; 230. a first process pipeline; 231. a second process pipeline; 232. a third process pipeline; 233. a process pipeline IV; 3, EAG discharging unit; 31. a flame arrestor; 32. eleven manual valves; 33. a first gasifier; 34. a manual valve twelve; 35. a fifth process pipeline; 36. a blowdown LNG collection line; NG/N2 purging the displacement unit; 41. a third pneumatic valve; NG buffer tank; 43. a first pressure regulating valve; 44. a third pressure transmitter; 45. a third temperature transmitter; 46. a fourth pneumatic valve; 47. a second gasifier; 48. a fifth pneumatic valve; a N2 tank; 410. a process pipeline six; 411. a process pipeline seven; 412. a process pipeline eight; 5. a gasification pressurization unit; 51. a second pressure regulating valve; 52. a pressure transmitter IV; 53. a temperature transmitter IV; 54. a sixth pneumatic valve; 55. a third gasifier; 56. a pneumatic valve seven; 57. a ninth process line; an LNG filling pump pry unit; 61. thirteen manual valves; 62. fourteen manual valves; 63. eighth pneumatic valve; 64. breaking the valve III; 65. fifteen manual valves; 66. sixthly, manually operating a valve; 67. seventeen manual valves; 68. a check valve V; 69. a check valve six; 610. eighteen manual valves; 611. a ninth pneumatic valve; 612. a fourth connecting and disconnecting valve; 613. nineteen manual valves; 614. twenty manual valves; 615. a safety valve V; 616. ten pneumatic valves; 617. twenty one manual valve; 618. eleven pneumatic valves; 619. breaking the valve V; 620. twenty-two manual valves; 621. a safety valve six; 622. a fifth pressure transmitter; 623. a fifth temperature transmitter; 624. a pneumatic valve twelve; 625. a pressure transmitter six; 626. a sixth temperature transmitter; 627. thirteen pneumatic valves; 628. a check valve seven; 629. fourteen pneumatic valves; 630. a low temperature immersed pump; 631. a process pipeline ten; 632. eleven process pipelines; 633. a process line twelve; 634. thirteen process pipelines; 635. fourteen process pipelines; 636. fifteen process pipelines; 637. sixthly, process pipelines; 638. seventeen process pipelines; 639. eighteen process pipelines; 640. nineteen process pipelines; 641. twenty process pipelines; 7. moving the LNG tank; 71. a liquid phase port; 72. a pressurized liquid phase port; 73. a gas phase port; 74. a liquid dispensing port; 8. filling the wharf; 9. a first low-temperature metal hose; 10. a second low-temperature metal hose; 11. a first low-temperature vacuum hose; 12. a second low-temperature vacuum hose; 13. a third low-temperature vacuum hose; 14. and moving the walking unit.
Detailed Description
The technical solution of the present invention is described below with reference to the accompanying drawings and examples.
As shown in fig. 1 to 6, the mobile LNG tank filling terminal process device system of the present invention includes an LNG receiving vessel 1, an LNG filling metering unit 2, an EAG discharging unit 3, an NG/N2 purging and replacing unit 4, a gasification pressurizing unit 5, an LNG filling pump pry unit 6, a mobile LNG tank 7 and a mobile walking unit 14, wherein the LNG filling metering unit 2, the EAG discharging unit 3, the NG/N2 purging and replacing unit 4, the gasification pressurizing unit 5 and the LNG filling pump pry unit 6 are respectively fixed on the mobile walking unit 14, the LNG filling metering unit 2 is respectively connected to the LNG receiving vessel 1, the NG/N2 purging and replacing unit 4 and the LNG filling pump pry unit 6, the NG/N2 purging and replacing unit 4 is respectively connected to the LNG filling metering unit 2 and the LNG filling pump pry unit 6, the gasification pressurizing unit 5 is correspondingly connected to the LNG filling pump pry unit 6, the LNG filling pump pry unit 6 is correspondingly connected with the LNG filling metering unit 2, the NG/N2 purging and replacing unit 4, the gasification pressurizing unit 5 and the mobile LNG tank 7 respectively, and the EAG discharging unit 3 is correspondingly connected with the LNG filling metering unit 2, the LNG filling pump pry unit 6 and the mobile LNG tank 7 respectively. The above constitutes the basic structure of the present invention.
In this embodiment, the mobile LNG tank 7 and the mobile traveling unit 14 can be flexibly moved on the filling terminal 8 according to different LNG filling positions and requirements, and the mobile traveling unit 14 can flexibly arrange the positions of the LNG filling metering unit 2, the EAG discharging unit 3, the NG/N2 purging and replacing unit 4, the gasification pressurizing unit 5 and the LNG filling pump pry unit 6 according to different LNG filling positions and requirements.
In this embodiment, a first process pipeline 230, a second process pipeline 231, a third process pipeline 232 and a fourth process pipeline 233 are arranged in the LNG refueling metering unit 2, a first snap valve 21, a first manual valve 22, a first pneumatic valve 23, a second manual valve 24, a first check valve 25, a first safety valve 26, a third manual valve 27, a first flowmeter 28, a fourth manual valve 29, a first pressure transmitter 210, a first temperature transmitter 211 and a second safety valve 212 are sequentially arranged on the first process pipeline 230, the first process pipeline 230 at one end of the first snap valve 21 is connected to the gas phase pipeline 11 of the LNG refueling ship 1 through a first low-temperature metal hose 9, the first process pipeline 230 at one end of the second safety valve 212 is connected to the LNG refueling pump pry unit 6, and the second process pipeline 231 is sequentially provided with a second snap valve 213, a fifth manual valve 214, a second pneumatic valve 215, a sixth manual valve 216, a second check valve 218, a third safety valve 219, a solenoid valve 220, A second flow meter 221, an eighth manual valve 222, a second pressure transmitter 223, a second temperature transmitter 224 and a fourth safety valve 225, wherein the second process pipeline 231 provided with one end of the second break valve 213 is connected to the liquid phase pipeline 13 on the LNG injection ship 1 through a second low temperature metal hose 10, the first process pipeline 230 provided with one end of the fourth safety valve 225 is connected to the LNG filling pump pry unit 6, the third process pipeline 232 is sequentially provided with a ninth manual valve 226 and a third check valve 227, the fourth process pipeline 233 is sequentially provided with a tenth manual valve 228 and a fourth check valve 229, the second manual valve 24 and the first check valve 25 on the first process pipeline 230 are connected between the sixth manual valve 216 and the second check valve 218 on the second process pipeline 231 through a fifth process pipeline 234, the fifth process pipeline 234 is provided with a seventh manual valve 217, one ends of the third process pipeline 232 and the fourth process pipeline 233 are connected between the second check valve 218 and the third safety valve 219 on the second, the other ends of the process line three 232 and the process line four 233 are both connected to the NG/N2 purge replacement unit 4.
In practical application, the LNG filling metering unit 2 is interlocked through a flow meter and a pneumatic valve to control the LNG quantitative filling.
In this embodiment, the gas-phase pipeline 11 is provided with a first interface flange 12 for fixedly connecting with the first low-temperature metal hose 9, and the liquid-phase pipeline 13 is provided with a second interface flange 14 for fixedly connecting with the second low-temperature metal hose 10.
In this embodiment, a process pipeline five 35 and a discharged LNG collecting pipeline 36 are arranged in the EAG discharge unit 3, the process pipeline five 35 is sequentially provided with a flame arrester 31, a manual valve eleven 32, a vaporizer one 33, and a manual valve twelve 34, and the process pipeline five 35 at one end provided with the manual valve twelve 34 is connected to the discharged LNG collecting pipeline 36.
In practical application, the EAG discharging unit 3 heats the discharged LNG through the first vaporizer 33 to a temperature higher than-107 ℃, so that the density of the LNG is lower than that of air, and the LNG is convenient to safely escape.
In this embodiment, a process pipeline six 410, a process pipeline seven 411 and a process pipeline eight 412 are arranged in the NG/N2 purging and replacing unit 4, a pneumatic valve three 41, an NG buffer tank 42, a pressure regulating valve one 43, a pressure transmitter three 44, a temperature transmitter three 45, a pneumatic valve four 46, a vaporizer two 47 and a pneumatic valve five 48 are sequentially arranged on the process pipeline six 410, the process pipeline six 410 at one end of the pneumatic valve three 41 is connected to the process pipeline seven 411, the process pipeline six 410 at one end of the pneumatic valve five 48 is connected to the LNG refueling pump prying unit 6, the process pipeline seven 411 and the process pipeline eight 412 are both connected to the N2 tank 49, one end of the process pipeline seven 411 is connected to the process pipeline three 232 of the LNG refueling metering unit 2, the other end of the process pipeline seven 411 is connected to the LNG refueling pump prying unit 6, one end of the process pipeline eight 412 is connected to the process pipeline four 233 of the LNG refueling metering unit 2, the other end of process line eight 412 is connected to LNG refueling skid unit 6.
In practical use, the NG/N2 purging replacement unit 4 is used for purging replacement residual materials and inerting a pipeline system before and after LNG filling.
In this embodiment, a nine process pipeline 57 is disposed in the gasification pressurization unit 5, a second pressure regulating valve 51, a fourth pressure transmitter 52, a fourth temperature transmitter 53, a sixth pneumatic valve 54, a third gasifier 55, and a seventh pneumatic valve 56 are sequentially disposed on the nine process pipeline 57, and an air inlet end and an air outlet end of the nine process pipeline 57 are respectively connected to the LNG refueling pump pry unit 6.
In practice, the gasification pressurization unit 5 is used for pressurization of the mobile LNG tank 7.
In this embodiment, a process pipeline ten 631, a process pipeline eleven 632, a process pipeline twelve 633, a process pipeline thirteen 634, a process pipeline fourteen 635, a process pipeline fifteen 636, a process pipeline sixteen 637, a process pipeline seventeen 638, a process pipeline eighteen 639, a process pipeline nineteen 640 and a process pipeline twenty 641 are arranged in the LNG refueling pump pry unit 6, a manual valve eighteen 610, a pneumatic valve nine 611, a manual valve twenty 614 and a connection and disconnection valve four 612 are sequentially arranged on the process pipeline ten 631, a pneumatic valve ten 616 is arranged on the process pipeline eleven 632, a safety valve six 621, a pressure transmitter 622 and a temperature transmitter five 623 are sequentially arranged on the process pipeline twelve 633, a check valve five 68 and a manual valve fifteen 65 are arranged on the process pipeline thirteen 634, a check valve six 69 and a manual valve sixteen 66 are arranged on the process pipeline fourteen 635, a manual valve twenty-one 617, a manual valve twenty-, The system comprises an eleventh pneumatic valve 618, a twenty-two manual valve 620 and a fifth breaking valve 619, wherein a thirteen manual valve 61, an eighth pneumatic valve 63, a seventeenth manual valve 67 and a third breaking valve 64 are sequentially arranged on a sixteen 637 process pipeline, a thirteen pneumatic valve 627 and a fourteen pneumatic valve 629 are arranged on a seventeenth 638 process pipeline, a low-temperature immersed pump 630 is arranged between the thirteen pneumatic valve 627 and the fourteen pneumatic valve 629, the low-temperature immersed pump 630 is connected with an eighteen process pipeline 639 and a nineteen process pipeline 640, a twelve pneumatic valve 624 and a seven check valve 628 are arranged on the eighteen process pipeline 639, a five safety valve 615, a six pressure transmitter 625 and a six temperature transmitter 626 are sequentially arranged on the nineteen process pipeline 640, and a nineteen manual valve 613 and a fourteen manual valve 62 are arranged.
In practical application, the LNG refueling pump skid unit 6 is used for pressurizing and refueling the LNG in the mobile LNG tank 7 to the tanker 1.
In this embodiment, the process line ten 631 is connected to the gas outlet end of the gasification and pressurization unit 5, the process line fifteen 636 is connected to the gas inlet end of the gasification and pressurization unit 5, one end of the process line ten 631 is connected to the process line one 230 of the LNG refueling metering unit 2, the other end of the process line ten 631 is connected to the gas phase port 73 of the mobile LNG tank 7 through the low-temperature vacuum hose one 11, one end of the process line eleven 632 is connected to the process line two 231 of the LNG refueling metering unit 2, the other end of the process line eleven 632 is connected between the safety valve five 615 of the process line nineteen 640 and the pressure transmitter six 625, one end of the process line twelve 633 is connected to the process line six 410 of the NG/N2 purging and replacing unit 4, the other end of the process line twelve 633 is connected to the process line eighteen 639, one end of the process line thirteen 634 is connected to the process line, the other end of the process pipeline thirteen 634 is connected between a manual valve thirteen 61 and a pneumatic valve eighty 63 of the process pipeline sixty 637, one end of the process pipeline fourteen 635 is connected between a process pipeline eighty 412 of the NG/N2 purging displacement unit 4, the other end of the process pipeline fourteen 635 is connected between the manual valve thirteen 61 and the pneumatic valve eighty 63 of the process pipeline sixty 637, one end of the process pipeline fifteen 636 is connected between a safety valve fifty 615 and a pressure transmitter sixty 625 of the process pipeline nineteen 640, the other end of the process pipeline fifteen 636 is connected to a pressurized liquid phase port 72 of the mobile LNG tank 7 through a low-temperature vacuum hose two 12, one end of the process pipeline sixty 637 is connected to the process pipeline nineteen 640, the other end of the process pipeline 637 is connected to a liquid phase port 71 of the mobile LNG tank 7 through a low-temperature vacuum hose three 13, the other end of the process pipeline seventeen 638 is connected to the low-temperature immersed pump 630, one end of the process pipeline eighteen 639 is connected to the process pipeline eleven 632, the other end of the process pipeline eighteen 639 is connected to the low-temperature immersed pump 630, the process pipeline nineteen 640 is connected to the pneumatic valve fourteen 629 on the process pipeline seventeen 638, one end of the process pipeline twenty 641 is connected between the manual valve eighteen 610 and the pneumatic valve nine 611 on the process pipeline ten 631, and the other end of the process pipeline twenty 641 is connected between the manual valve thirteen 61 and the pneumatic valve eight 63 on the process pipeline sixteen 637.
In this embodiment, the LNG filling metering unit 2, the LNG filling pump pry unit 6, and the liquid dispersion ports 01 to 12 of the movable LNG tank 7 are connected to a process pipeline five 36 of the EAG discharge unit 3.
The working principle of the invention is as follows:
first, purging and replacing operation
Opening the ten manual valves 228, the six manual valves 216, the five manual valves 214 and the second manual valve 24, opening the first pneumatic valve 23, the second pneumatic valve 215 and the seven manual valve 217, and purging the air in the first low-temperature metal hose 9 and the second low-temperature metal hose 10 between the LNG filling metering unit 2 and the LNG receiving and filling ship 1 by using the NG/N2 to purge the N2 tank 49 of the replacement unit 4; closing the manual valve ten 228, opening the manual valve nine 226 and the pneumatic valve three 41, and purging nitrogen inside the first cryogenic metal hose 9 and the second cryogenic metal hose 10 between the LNG refueling metering unit 2 and the LNG receiving vessel 1 by using the NG buffer tank 42 of the NG/N2 purging displacement unit 4.
The sixteen hand valve 66, the fourteen hand valve 62, and the nineteen hand valve 613 are opened, and the eight air valve 63, the eleventh air valve 618, and the ninth air valve 611 are opened to purge the N2 tank 49 of the replacement unit 4 of air with NG/N2 to purge the air inside the hose between the replacement LNG refueling skid unit 6 and the mobile LNG tank 7; closing the manual valve sixteen 66 and opening the manual valve fifteen 65 and the pneumatic valve three 41 purge the nitrogen inside the cryogenic vacuum hose one 11, the cryogenic vacuum hose two 12 and the cryogenic vacuum hose three 13 between the LNG refueling skid unit 6 and the mobile LNG tank 7 by using the NG buffer tank 42 of the NG/N2 purge displacement unit 4.
Second, filling operation
After the preparation work is finished, the LNG receiving vessel 1 and the mobile LNG tank 7 are informed to prepare filling, wherein the mobile LNG tank filling wharf process device system can flexibly select three different filling modes of gasification pressurization filling, filling pump pressurization filling and gasification pressurization filling pump combined filling according to different fuel tank parameters of the LNG receiving vessel 1.
Gasification pressurization filling mode
And opening twenty-one 617, eighteen 610, thirteen 61, eight 222 and six 216 of the manual valves, and opening seven 56, six 54, nine 611, eleven 618, eight 63, ten 616, two 215 and 220 of the pneumatic valves, so that the LNG enters the vaporizer 5.5 of the vaporizing and pressurizing unit 5 through the pressurized liquid phase port 72 of the movable LNG tank 7, is vaporized, enters the gas phase space of the movable LNG tank 7 through the gas phase port 73 of the movable LNG tank 7, increases the gas phase pressure thereof, and enters the liquid phase pipeline 13 and the interface flange two 14 of the LNG injection ship 1 through the liquid phase port 71 of the movable LNG tank 7 to be injected into the fuel tank. The LNG filling metering unit 2 monitors pressure, temperature and flow data in real time, compares filling flow with set flow data, controls filling flow through the opening degree of the electromagnetic valve 220, and finally completely closes the electromagnetic valve 220 when the set flow is reached.
Pressurizing filling mode of filling pump
And opening thirteen manual valves 61, eight manual valves 222, six manual valves 216, two manual valves 24, three manual valves 27, four manual valves 29 and eighteen manual valves 610, opening eight pneumatic valves 63, fourteen pneumatic valves 629, twelve pneumatic valves 624, two pneumatic valves 215, one pneumatic valve 23, nine pneumatic valves 611 and 220, allowing the LNG to enter the low-temperature immersed pump 630 of the LNG filling pump pry unit 6 through the liquid phase port 7.1 of the LNG tank 7, pressurizing the LNG, entering the LNG filling tanker 1 liquid phase pipeline 13 and the second interface flange 14 through the LNG metering unit 2, and filling the LNG into the fuel tank, and allowing the LNG filling tanker 1BOG to return to the low-temperature immersed pump 630 of the LNG filling pump pry unit 6 and the gas phase space of the LNG tank 7 through the gas-liquid phase pipeline 11 of the LNG filling tanker 1, the first interface flange 12 and the LNG filling metering unit 2. The LNG filling metering unit 2 monitors pressure, temperature and flow data in real time, compares filling flow with set flow data, controls filling flow through the opening degree of the electromagnetic valve 220 and the rotating speed of the low-temperature immersed pump 630 of the LNG filling pump pry unit 6, and finally completely closes the electromagnetic valve 2.20 when the set flow is reached, and stops the operation of the low-temperature immersed pump 630.
③ gasification pressurization filling pump combined filling mode
The thirteen 61 manual valves, the eighteen 610 manual valves, the twenty-one manual valves 617, the two 24 manual valves, the three 27 manual valves, the four 29 manual valves, the six 216 manual valves and the eight 222 manual valves are opened, and the eight 6.3 pneumatic valves, the nine 6.11 pneumatic valves, the eleven 6.18 pneumatic valves, the ten 6.16 pneumatic valves, the twelve 6.24 pneumatic valves, the fourteen 6.29 pneumatic valves, the six 5.4 pneumatic valves, the seven 5.6 pneumatic valves, the one 2.3 pneumatic valves, the two 2.15 pneumatic valves and the 2.20 pneumatic valves are opened, LNG enters the vaporizer 5.5 of the vaporizing pressurization unit 5 through the pressurized liquid phase port 7.2 of the mobile LNG tank 7, enters the gas phase space of the mobile LNG tank 7 through the gas phase port 7.3 of the mobile LNG tank 7 after being vaporized, and then enters the liquid phase pipeline 1.3 and the liquid phase pipeline 1.4 of the LNG metering unit 1 of the filling ship through the gas phase port 7.3 of the mobile LNG tank 7 after being pressurized through the liquid phase port 7.2 of the mobile LNG tank 7 into the submerged pump 6 of the LNG filling pump unit 6, and when the BOG pressure of the LNG injection receiving ship 1 is higher than the pressure of the gasified LNG in the gasifier 5.5 of the gasification pressurizing unit 5, the LNG injection receiving ship 1 returns to the gas phase space of the low-temperature immersed pump 6.30 of the LNG injection pump pry unit 6 and the movable LNG tank 7 through the gas-liquid phase pipeline 1.1, the interface flange 1.2 and the LNG injection metering unit 2. The LNG filling metering unit 2 monitors pressure, temperature and flow data in real time, compares filling flow with set flow data, controls filling flow through the opening degree of the electromagnetic valve 2.20 and the rotating speed of the low-temperature immersed pump 6.30 of the LNG filling pump pry unit 6, and finally completely closes the electromagnetic valve 2.20 and stops the operation of the low-temperature immersed pump 6.30 when the set flow is reached.
Third, demolish the homework
Closing the manual valve ten 2.28, opening the manual valve nine 2.26 and the pneumatic valve three 4.1, and purging LNG in the low-temperature metal hose I9 and the low-temperature metal hose II 10 between the LNG filling metering unit 2 and the LNG injection ship 1 by using the NG buffer tank 4.2 of the replacement unit 4 through NG/N2; and opening ten manual valves 2.28, six manual valves 2.16, five manual valves 2.14 and two manual valves 2.4, and opening the air-operated valve I2.3, the air-operated valve II 2.15 and seven manual valves 2.17 to purge the N2 tank 4.9 of the replacement unit 4 by utilizing NG/N2 to purge NG inside the first low-temperature metal hose 9 and the second low-temperature metal hose 10 between the LNG filling metering unit 2 and the LNG receiving and injecting ship 1.
Closing the manual valve sixteen 6.6, opening the manual valve fifteen 6.5 and the pneumatic valve three 4.1, and purging LNG in the low-temperature vacuum hose I11, the low-temperature vacuum hose II 12 and the low-temperature vacuum hose III 13 between the replacement LNG filling pump pry unit 6 and the mobile LNG tank 7 by utilizing an NG/N2 purging NG buffer tank 4.2 of the replacement unit 4; the sixteen hand valve 6.6, the fourteen hand valve 6.2 and the nineteen hand valve 6.13 are opened, and the eight air valve 6.3, the eleventh air valve 6.18 and the nine air valve 6.11 are opened to purge the N2 tank 4.9 of the displacement unit 4 with NG/N2 to purge NG inside the cryogenic vacuum hose one 11, the cryogenic vacuum hose two 12 and the cryogenic vacuum hose three 13 between the displacement LNG refueling pump skid unit 6 and the mobile LNG tank 7.
After the purging and replacing work is finished, opening the first manual valve 2.2, the fifth manual valve 2.14, the twenty 6.14 manual valve, the twenty two manual valves 6.20 and the seventeenth manual valve 6.7, releasing the pressure, then removing the first low-temperature metal hose 9, the second low-temperature metal hose 10, the first low-temperature vacuum hose 11, the second low-temperature vacuum hose 12, the third low-temperature vacuum hose 13, the liquid dispersion port 7.4 of the mobile LNG tank 7 and the metal hose between the corresponding nodes of the EAG discharge unit 3, and driving the LNG injection ship 1 and the mobile LNG tank 7 away from the injection wharf 8.
By the structure, the mobile LNG tank filling wharf process device system has the following advantages:
1) aiming at different wharf types and configuration conditions of injected ports of injected ships, all LNG injecting process functions are integrated, installed and arranged and form an integrated structure with a mobile travelling mechanism, unnecessary exposure arrangement of LNG low-temperature pipelines is reduced, the generation amount of BOG is reduced from the source, the mobile travelling mechanism and a mobile LNG tank are combined to be flexibly arranged according to actual conditions of an injecting wharf field, and the injecting operation adaptability is stronger;
2) the LNG filling metering unit 2, the gasification pressurizing unit 5 and the LNG filling pump pry unit 6 are controlled in an integrated mode, signal data of pressure transmitters, temperature transmitters and flow transmitters of all systems are collected, the efficiency of a gasifier of the gasification pressurizing unit 5 and the working curve of a submerged pump of the LNG filling pump pry unit 6 are controlled in a coordinated mode, and the purpose of safe, efficient and quantitative LNG filling is achieved;
3) the NG/N2 purging and replacing unit 4 is used for purging and replacing residual LNG through NG, then the N2 is used for purging and replacing NG to purge and inert LNG filling process system pipelines and equipment, and the safety risk of leakage of residual liquid is avoided;
4) the EAG discharging unit 3 collects all safety valve outlet pipelines including the movable LNG tank 7 and heats and discharges LNG through the gasifier to raise the temperature to be higher than-107 ℃, so that the density of the LNG is lower than that of air, and the risk of low-temperature NG gas gathering at a low position is avoided;
5) the LNG filling, storage and transportation process facilities do not need to be built and fixed, operation is convenient, the filling device and the movable LNG tank 7 only need to be dragged and dropped to the designated positions, the process pipeline is connected, and the LNG filling amount is set, so that filling operation can be carried out.
The mobile LNG tank filling terminal process unit system according to the present invention can be used not only in the LNG filling terminal 8, but also in other systems with cryogenic quantitative transport, such as LNG, LPG tanker, tank filling systems.
While the embodiments of the present invention have been described, the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make various modifications without departing from the spirit and scope of the present invention as defined by the appended claims.
Claims (10)
1. The utility model provides a remove LNG tank filling pier process units system which characterized in that: the LNG filling and replacing device comprises an LNG filled ship (1), an LNG filling and metering unit (2), an EAG discharging unit (3), an NG/N2 purging and replacing unit (4), a gasification pressurizing unit (5), an LNG filling pump prying unit (6), a mobile LNG tank box (7) and a mobile walking unit (14), wherein the LNG filling and metering unit (2), the EAG discharging unit (3), the NG/N2 purging and replacing unit (4), the gasification pressurizing unit (5) and the LNG filling pump prying unit (6) are respectively fixed on the mobile walking unit (14), the LNG filling and metering unit (2) is respectively and correspondingly connected with the LNG filled ship (1), the NG/N2 purging and replacing unit (4) and the LNG filling pump prying unit (6), the NG/N2 purging and replacing unit (4) is respectively and correspondingly connected with the LNG filling and metering unit (2) and the LNG filling pump prying unit (6), gasification pressure boost unit (5) and LNG filling pump sled unit (6) correspond and are connected, LNG filling pump sled unit (6) sweep replacement unit (4), gasification pressure boost unit (5) and remove LNG tank case (7) and correspond with LNG filling metering unit (2), NG/N2 respectively and are connected, EAG unit (3) of bleeding corresponds with LNG filling metering unit (2), LNG filling pump sled unit (6), removal LNG tank case (7) respectively and is connected.
2. The system of claim 1, wherein the system comprises: the mobile LNG tank box (7) and the mobile walking unit (14) can flexibly move on the filling wharf (8) according to different LNG filling positions and requirements, and the mobile walking unit (14) can flexibly arrange the positions of the LNG filling metering unit (2), the EAG discharging unit (3), the NG/N2 purging and replacing unit (4), the gasification pressurizing unit (5) and the LNG filling pump pry unit (6) according to different LNG filling positions and requirements.
3. The system of claim 1, wherein the system comprises: the LNG filling and metering device is characterized in that a first process pipeline (230), a second process pipeline (231), a third process pipeline (232) and a fourth process pipeline (233) are arranged in the LNG filling and metering unit (2), a first breaking valve (21), a first manual valve (22), a first pneumatic valve (23), a second manual valve (24), a first check valve (25), a first safety valve (26), a third manual valve (27), a first flowmeter (28), a fourth manual valve (29), a first pressure transmitter (210), a first temperature transmitter (211) and a second safety valve (212) are sequentially arranged on the first process pipeline (230), the first process pipeline (230) provided with one end of the first breaking valve (21) is connected to a gas phase pipeline (11) on an LNG filled ship (1) through a first low-temperature metal hose (9), the first process pipeline (230) provided with one end of the second safety valve (212) is connected to the LNG filling and pumping unit (6), and the second breaking valve (213) and the fourth process pipeline (231) are sequentially arranged on the second, The LNG filling pump prying device comprises a fifth manual valve (214), a second pneumatic valve (215), a sixth manual valve (216), a second check valve (218), a third safety valve (219), a solenoid valve (220), a second flowmeter (221), an eighth manual valve (222), a second pressure transmitter (223), a second temperature transmitter (224) and a fourth safety valve (225), wherein the second process pipeline (231) provided with one end of the second break-off valve (213) is connected to a liquid phase pipeline (13) on the LNG filling ship (1) through a second low-temperature metal hose (10), the first process pipeline (230) provided with one end of the fourth safety valve (225) is connected to the LNG filling pump prying unit (6), the third process pipeline (232) is sequentially provided with a ninth manual valve (226) and a third check valve (227), the fourth process pipeline (233) is sequentially provided with a tenth manual valve (228) and a fourth check valve (229), and a fifth process pipeline (231) and a first check valve (25) on the first process pipeline (230) are connected to the second process pipeline (231) And a manual valve seven (217) is arranged on the process pipeline five (234), one ends of the process pipeline three (232) and the process pipeline four (233) are connected between the check valve two (218) on the process pipeline two (231) and the safety valve three (219), and the other ends of the process pipeline three (232) and the process pipeline four (233) are connected to the NG/N2 purging and replacing unit (4).
4. The system of claim 3, wherein the system comprises: the gas phase pipeline (11) is provided with a first interface flange (12) which is fixedly connected with the first low-temperature metal hose (9), and the liquid phase pipeline (13) is provided with a second interface flange (14) which is fixedly connected with the second low-temperature metal hose (10).
5. The system of claim 1, wherein the system comprises: the EAG unloading unit (3) is internally provided with a process pipeline five (35) and an unloading LNG collecting pipeline (36), the process pipeline five (35) is sequentially provided with a flame arrester (31), a manual valve eleven (32), a gasifier one (33) and a manual valve twelve (34), and the process pipeline five (35) at one end provided with the manual valve twelve (34) is connected with the unloading LNG collecting pipeline (36).
6. The system of claim 1, wherein the system comprises: a process pipeline six (410), a process pipeline seven (411) and a process pipeline eight (412) are arranged in the NG/N2 purging and replacing unit (4), a pneumatic valve three (41), an NG buffer tank (42), a pressure regulating valve one (43), a pressure transmitter three (44), a temperature transmitter three (45), a pneumatic valve four (46), a gasifier two (47) and a pneumatic valve five (48) are sequentially arranged on the process pipeline six (410), the process pipeline six (410) provided with one end of the pneumatic valve three (41) is connected to the process pipeline seven (411), the process pipeline six (410) provided with one end of the pneumatic valve five (48) is connected to the LNG filling pump prying unit (6), the process pipeline seven (411) and the process pipeline eight (412) are both connected to the N2 tank (49), one end of the process pipeline seven (411) is connected to the process pipeline three (232) of the LNG filling metering unit (2), the other end of the process pipeline seven (411) is connected to the LNG filling pump pry unit (6), one end of the process pipeline eight (412) is connected to the process pipeline four (233) of the LNG filling metering unit (2), and the other end of the process pipeline eight (412) is connected to the LNG filling pump pry unit (6).
7. The system of claim 1, wherein the system comprises: be equipped with nine (57) of technology pipeline in gasification pressure boost unit (5), be equipped with pressure-regulating valve two (51), pressure transmitter four (52), temperature transmitter four (53), pneumatic valve six (54), vaporizer three (55) and pneumatic valve seven (56) on nine (57) of technology pipeline in proper order, the inlet end and the end of giving vent to anger of nine (57) of technology pipeline are connected respectively in LNG filling pump sled unit (6).
8. The system of claim 7, wherein the system comprises: the LNG filling pump pry unit (6) is internally provided with a process pipeline ten (631), a process pipeline eleven (632), a process pipeline twelve (633), a process pipeline thirteen (634), a process pipeline fourteen (635), a process pipeline fifteen (636), a process pipeline sixteen (637), a process pipeline seventeen (638), a process pipeline eighteen (639), a process pipeline nineteen (640) and a process pipeline twenty (641), wherein the process pipeline ten (631) is sequentially provided with a manual valve eighteen (610), a pneumatic valve nineteen (611), a manual valve twenty (614) and a connection and disconnection valve fourteen (612), the process pipeline eleven (632) is provided with the pneumatic valve ten (616), the process pipeline twelve (633) is sequentially provided with a safety valve six (621), a pressure transmitter five (622) and a temperature transmitter five (623), the process pipeline thirteen (634) is provided with a check valve five (68) and a manual valve fifteen (65), the process pipeline fourteen (635) is provided with a check valve six (69) and a manual valve sixteen (66), the process pipeline fifteen (636) is sequentially provided with a manual valve twenty-one (617), a pneumatic valve eleventh (618), a manual valve twenty-two (620) and a breaking valve five (619), the process pipeline sixteen (637) is sequentially provided with a manual valve thirteen (61), a pneumatic valve eighth (63), a manual valve seventeen (67) and a breaking valve third (64), the process pipeline seventeen (638) is provided with a pneumatic valve thirteen (627) and a pneumatic valve fourteen (629), a low-temperature immersed pump (630) is arranged between the pneumatic valve thirteen (627) and the pneumatic valve fourteen (629), the low-temperature immersed pump (630) is connected with the process pipeline eighteen (639) and the process pipeline nineteen (640), the process pipeline eighteen (639) is provided with a pneumatic valve twelve (624) and a pneumatic valve seventeen (628), the technical pipeline nineteen (640) is sequentially provided with a safety valve five (615), a pressure transmitter six (625) and a temperature transmitter six (626), and the technical pipeline twenty (641) is provided with a manual valve nineteen (613) and a manual valve fourteen (62).
9. The system of claim 8, wherein the system comprises: the process pipeline ten (631) is connected to the gas outlet end of the gasification and pressurization unit (5), the process pipeline fifteen (636) is connected to the gas inlet end of the gasification and pressurization unit (5), one end of the process pipeline ten (631) is connected to the process pipeline one (230) of the LNG filling and metering unit (2), the other end of the process pipeline ten (631) is connected to the gas phase port (73) of the mobile LNG tank (7) through the low-temperature vacuum hose one (11), one end of the process pipeline eleven (632) is connected to the process pipeline two (231) of the LNG metering unit (2), the other end of the process pipeline eleven (632) is connected between the safety valve five (615) of the process pipeline nineteen (640) and the pressure transmitter six (625), one end of the process pipeline twelve (633) is connected to the process pipeline six (410) of the NG/N2 purging and replacement unit (4), the other end of the process pipeline twelve (633) is connected to the process pipeline eighteen (639), one end of the process pipeline thirteen (634) is connected to the process pipeline seventy (411) of the NG/N2 purging and replacing unit (4), the other end of the process pipeline thirteen (634) is connected between the manual valve thirteen (61) and the pneumatic valve eight (63) of the process pipeline sixteen (637), one end of the process pipeline fourteen (635) is connected to the process pipeline eight (412) of the NG/N2 purging and replacing unit (4), the other end of the process pipeline fourteen (635) is connected between the manual valve thirteen (61) and the pneumatic valve eight (63) of the process pipeline sixteen (637), one end of the process pipeline fifteen (636) is connected between the safety valve five (615) and the pressure transmitter six (625) of the process pipeline nineteen (640), and the other end of the process pipeline fifteen (636) is connected to the mobile LNG tank (7) through the low-temperature vacuum hose two (12) The other end of the process pipeline sixteen (637) is connected to the liquid phase port (71) of the mobile LNG tank (7) through a low-temperature vacuum hose three (13), one end of the process pipeline seventeen (638) is connected to the process pipeline ten (631), the other end of the process pipeline seventeen (638) is connected to the low-temperature immersed pump (630), one end of the process pipeline eighteen (639) is connected to the process pipeline eleven (632), the other end of the process pipeline eighteen (639) is connected to the low-temperature immersed pump (630), the process pipeline nineteen (640) is connected to the pneumatic valve fourteen (629) on the process pipeline seventeen (638), one end of the process pipeline twenty (641) is connected between the manual valve eighteen (610) and the pneumatic valve nine (611) on the process pipeline ten (631), the other end of the process pipeline twenty (641) is connected between a manual valve thirteen (61) and a pneumatic valve eight (63) on a process pipeline sixteen (637).
10. The system of claim 8, wherein the system comprises: the LNG filling metering unit (2), the LNG filling pump pry unit (6) and the liquid dispersion ports 01-12 of the movable LNG tank box (7) are connected to a process pipeline five (36) of the EAG discharge unit (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011236514.9A CN112178448A (en) | 2020-11-09 | 2020-11-09 | Mobile LNG tank filling wharf process device system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011236514.9A CN112178448A (en) | 2020-11-09 | 2020-11-09 | Mobile LNG tank filling wharf process device system |
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| CN112178448A true CN112178448A (en) | 2021-01-05 |
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| CN202011236514.9A Pending CN112178448A (en) | 2020-11-09 | 2020-11-09 | Mobile LNG tank filling wharf process device system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110419A (en) * | 2021-12-02 | 2022-03-01 | 江南造船(集团)有限责任公司 | Normal-temperature liquid propane ship unloading system and ship unloading method |
| CN115183149A (en) * | 2022-04-25 | 2022-10-14 | 中国船级社武汉规范研究所 | LNG tank remaining maintenance time forecasting method based on neural network |
-
2020
- 2020-11-09 CN CN202011236514.9A patent/CN112178448A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110419A (en) * | 2021-12-02 | 2022-03-01 | 江南造船(集团)有限责任公司 | Normal-temperature liquid propane ship unloading system and ship unloading method |
| CN114110419B (en) * | 2021-12-02 | 2023-08-08 | 江南造船(集团)有限责任公司 | Normal-temperature liquid propane ship unloading system and ship unloading method |
| CN115183149A (en) * | 2022-04-25 | 2022-10-14 | 中国船级社武汉规范研究所 | LNG tank remaining maintenance time forecasting method based on neural network |
| CN115183149B (en) * | 2022-04-25 | 2024-01-16 | 中国船级社武汉规范研究所 | LNG tank remaining maintenance time forecasting method based on neural network |
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