CN210372863U - LNG stores up station and utilizes high-pressure gas to unload car turbocharging system - Google Patents
LNG stores up station and utilizes high-pressure gas to unload car turbocharging system Download PDFInfo
- Publication number
- CN210372863U CN210372863U CN201920945814.0U CN201920945814U CN210372863U CN 210372863 U CN210372863 U CN 210372863U CN 201920945814 U CN201920945814 U CN 201920945814U CN 210372863 U CN210372863 U CN 210372863U
- Authority
- CN
- China
- Prior art keywords
- unloading
- pipe
- gas
- tank
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
A high-pressure gas unloading pressurization system for an LNG storage and distribution station comprises an unloading liquid phase pipe, an unloading gas phase pipe, a tank car pressurization gas phase pipe, an LNG storage tank, an LNG immersed pump, a high-pressure gas inlet pressurization pipe, a natural gas buffer tank and an air-temperature gasifier; one end of the unloading liquid phase pipe is connected with an unloading liquid phase outlet of the tank car, and the other end of the unloading liquid phase pipe is connected with a liquid phase inlet of the LNG storage tank; one end of the unloading gas phase pipe is connected with an unloading gas phase port of the tank car, and the other end of the unloading gas phase pipe is connected with a gas phase inlet of the LNG storage tank; one end of the tank wagon pressurization gas phase pipe is connected with an outlet of the natural gas buffer tank, and the other end of the tank wagon pressurization gas phase pipe is connected with a tank wagon unloading gas phase port; one end of the high-pressure incoming gas pressure increasing pipe is connected with an outlet main pipe of the air-temperature gasifier from which the downstream output pressure regulating metering pry is removed, and the other end of the high-pressure incoming gas pressure increasing pipe is connected with an inlet of the natural gas buffer tank; the export of LNG storage tank is connected to LNG immersed pump one end, and the import of air temperature formula vaporizer is connected to the other end. The utility model discloses can promote the speed of unloading, the BOG tolerance when reducing the unloading reduces the setting of the booster of unloading.
Description
Technical Field
The utility model relates to a LNG stores up station of joining in marriage and utilizes high-pressure gas to unload car turbocharging system.
Background
In the process of general liquefied natural gas storage and transportation, liquefied natural gas in a tank car is generally required to be pressurized by an unloading pressurization pry and then injected into a storage tank, and along with the continuous improvement of the use requirements, people also put higher requirements on the unloading pressurization mode of the tank car.
At present, most LNG (liquefied natural gas) storage and distribution station tank cars are unloaded mainly through unloading pressurization gasifiers, and a small part of LNG immersed pumps are adopted for unloading, so that the flow is small, and the unloading efficiency is low. The tank car pressure boost vaporizer pressure boost unloading can cause the BOG that produces in the station more, and adopt the pump unloading to need the power consumption, and these two kinds of unloads have improved the running cost of LNG storage and distribution station greatly and have reduced the operating efficiency in the station, can't reach the economic benefits that the station was expected originally built.
Disclosure of Invention
The utility model aims to solve the problem that a high efficiency, reliable LNG stores up and joins in marriage station and utilizes high-pressure gas to unload turbocharging system is provided, and this system is used for LNG to store up and joins in marriage station tank wagon pressure boost and unloads, can reduce the production of BOG tolerance, improves the speed of unloading.
The utility model provides a technical scheme is: a high-pressure gas unloading pressurization system for an LNG storage and distribution station comprises an unloading liquid phase pipe, an unloading gas phase pipe, a tank car pressurization gas phase pipe, an LNG storage tank, an LNG immersed pump, a high-pressure gas inlet pressurization pipe, a natural gas buffer tank and an air-temperature gasifier; wherein: one end of the unloading liquid phase pipe is connected with an unloading liquid phase outlet of the tank car, and the other end of the unloading liquid phase pipe is connected with a liquid phase inlet of the LNG storage tank; one end of the unloading gas phase pipe is connected with an unloading gas phase port of the tank car, and the other end of the unloading gas phase pipe is connected with a gas phase inlet of the LNG storage tank. One end of the tank car pressurization gas phase pipe is connected with an outlet of the natural gas buffer tank, and the other end of the tank car pressurization gas phase pipe is connected with a tank car unloading gas phase port. One end of the high-pressure gas inlet pressure increasing pipe is connected with an outlet main pipe of the air-temperature gasifier which is connected with the downstream external output pressure regulating metering pry, and the other end of the high-pressure gas inlet pressure increasing pipe is connected with an inlet of the natural gas buffer tank. And one end of the LNG immersed pump is connected with an outlet of the LNG storage tank, and the other end of the LNG immersed pump is connected with an inlet of the air-temperature gasifier.
And the inlet and the outlet of the natural gas buffer tank are respectively provided with a pressure regulating valve.
And the unloading liquid phase pipe is connected with a nitrogen purging pipe connected with a nitrogen source.
The pressure regulating valve in the front of the natural gas buffer tank regulates the pressure from high pressure to 0.6MPa, and the pressure regulating valve in the rear of the buffer tank mainly plays a role in stabilizing the pressure, so that the pressure required by the unloading and pressurizing of the tank car is ensured.
The utility model is used for LNG stores up and joins in marriage station tank wagon system and unloads, when needs carry out the tank wagon and unload, opens pressure regulating valve and natural gas buffer tank outlet pipe pressure regulating valve on the high pressure gas pressure boost pipe, comes gas and tank wagon pressure boost gas phase pipe UNICOM with the high pressure, can be for the tank wagon pressure boost. After the connected pressurized high-pressure gas is connected with the external air-temperature type gasifier, on one hand, the flow and the pressure of the tank car are pressurized to be stable, the unloading speed of the tank car can be improved, and the operating efficiency in the station is improved; on the other hand, the temperature of the air-temperature gasifier is relatively low, the temperature of the pressurized gas can be reduced after the pressure is regulated by the pressure regulating valve, the BOG amount during unloading can be reduced by the low-temperature pressurized gas, and the operation cost in the station is reduced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
Referring to fig. 1, the utility model discloses a remove the liquid phase pipe 1 of unloading of LNG storage tank 12, remove the gas phase pipe 2 of unloading of LNG storage tank 12, tank wagon pressurization gas phase pipe 3, LNG storage tank 12, LNG immersed pump 4, air temperature formula vaporizer 11, high pressure come gas pressure boost pipe 6, natural gas buffer tank 7, air-vent valve 8 before the natural gas buffer tank, air-vent valve 9 behind the natural gas buffer tank, nitrogen gas purge pipe 10 etc.. Wherein: one end of the unloading liquid phase pipe 1 is connected with an unloading liquid phase outlet 14a of the tank wagon 14 through a breaking valve 15, the other end of the unloading liquid phase pipe is connected with a liquid phase inlet of the LNG storage tank 12, and a control valve F1 is arranged on the unloading liquid phase pipe 1; one end of the unloading gas phase pipe 2 is connected with an unloading gas phase port 14b of the tank wagon 14 through a snapping valve 13, the other end of the unloading gas phase pipe is connected with a gas phase inlet of the LNG storage tank 12, and a control valve F2 is arranged on the unloading gas phase pipe 2. One end of the tank wagon pressurization gas phase pipe 3 is connected with an outlet of the natural gas buffer tank 7, and the other end of the tank wagon pressurization gas phase pipe is connected with an unloading gas phase port 14b of the tank wagon 14. One end of the high-pressure incoming gas pressure increasing pipe 6 is connected with an outlet main pipe 5 of an air-temperature gasifier 11 of a downstream external output pressure regulating metering pry, and the other end of the high-pressure incoming gas pressure increasing pipe is connected with an inlet of a natural gas buffer tank 7. And one end of the LNG immersed pump 4 is connected with an outlet of the LNG storage tank 12, and the other end of the LNG immersed pump is connected with an inlet of the air-temperature type gasifier 11. The natural gas buffer tank front pressure regulating valve 8 is arranged on a high-pressure gas inlet pressure increasing pipe 6 at the inlet of the natural gas buffer tank, and the natural gas buffer tank rear pressure regulating valve 9 is arranged on a tank car pressure increasing gas phase pipe 3 at the outlet of the natural gas buffer tank. And a nitrogen purging pipe 10 connected with a nitrogen source is connected with the unloading liquid phase pipe 1.
The liquid sent to the air temperature type gasifier 11 by the LNG immersed pump 4 is high-pressure, the liquid is gasified by the air temperature type gasifier 11 and then is changed into low-temperature gas, the gas temperature is generally lower than the ambient temperature by 10 ℃, a part of the gasified low-temperature gas is conveyed to a downstream city pipe network after continuous reheating and metering pressure regulation, a part of the low-temperature gas is directly regulated to 0.6MP by the pressure regulating valve 8 and then enters the natural gas buffer tank 7 for buffering, and then enters the LNG tank wagon through an unloading gas port of the LNG tank wagon 14 after being regulated by the pressure regulating valve 9 after passing through the buffer tank 7 for pressure boosting.
The utility model discloses utilize the high-pressure gas to unload car supercharging system flow LNG immersed pump defeated pressure outward needs to be higher than LNG tank wagon design pressure, and the pipeline is generally defeated the pipeline outward in succession behind the gasification of air-heated vaporizer.
The utility model discloses tank wagon pressure boost flow simple structure of unloading, it is fast to unload, and it is few to produce the BOG volume when unloading.
Claims (3)
1. The utility model provides a LNG stores up station and utilizes high-pressure gas to unload car turbocharging system which characterized in that: the system comprises an unloading liquid phase pipe, an unloading gas phase pipe, a tank car pressurization gas phase pipe, an LNG storage tank, an LNG immersed pump, a high-pressure gas inlet pressurization pipe, a natural gas buffer tank and an air-temperature gasifier; wherein: one end of the unloading liquid phase pipe is connected with an unloading liquid phase outlet of the tank car, and the other end of the unloading liquid phase pipe is connected with a liquid phase inlet of the LNG storage tank; one end of the unloading gas phase pipe is connected with an unloading gas phase port of the tank car, and the other end of the unloading gas phase pipe is connected with a gas phase inlet of the LNG storage tank; one end of the tank car pressurization gas phase pipe is connected with an outlet of the natural gas buffer tank, and the other end of the tank car pressurization gas phase pipe is connected with a tank car unloading gas phase port; one end of the high-pressure incoming gas pressure increasing pipe is connected with an outlet main pipe of the air-temperature gasifier from which a downstream output pressure regulating and metering pry is removed, and the other end of the high-pressure incoming gas pressure increasing pipe is connected with an inlet of the natural gas buffer tank; and one end of the LNG immersed pump is connected with an outlet of the LNG storage tank, and the other end of the LNG immersed pump is connected with an inlet of the air-temperature gasifier.
2. The LNG storage and distribution station pressurization system using high-pressure gas unloading according to claim 1, wherein: and the inlet and the outlet of the natural gas buffer tank are respectively provided with a pressure regulating valve.
3. The LNG storage and distribution station pressurization system using high-pressure gas unloading according to claim 1 or 2, wherein: and the unloading liquid phase pipe is connected with a nitrogen purging pipe connected with a nitrogen source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920945814.0U CN210372863U (en) | 2019-06-22 | 2019-06-22 | LNG stores up station and utilizes high-pressure gas to unload car turbocharging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920945814.0U CN210372863U (en) | 2019-06-22 | 2019-06-22 | LNG stores up station and utilizes high-pressure gas to unload car turbocharging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210372863U true CN210372863U (en) | 2020-04-21 |
Family
ID=70266359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920945814.0U Active CN210372863U (en) | 2019-06-22 | 2019-06-22 | LNG stores up station and utilizes high-pressure gas to unload car turbocharging system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210372863U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114001272A (en) * | 2022-01-04 | 2022-02-01 | 中海油能源发展股份有限公司采油服务分公司 | BOG management system for LNG lightering operation |
-
2019
- 2019-06-22 CN CN201920945814.0U patent/CN210372863U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114001272A (en) * | 2022-01-04 | 2022-02-01 | 中海油能源发展股份有限公司采油服务分公司 | BOG management system for LNG lightering operation |
| CN114001272B (en) * | 2022-01-04 | 2022-04-08 | 中海油能源发展股份有限公司采油服务分公司 | BOG management system for LNG lightering operation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211924353U (en) | Marine liquid ammonia fuel feed system | |
| CN102128079B (en) | Injection/drainage air-supply turbocharging system | |
| CN210372863U (en) | LNG stores up station and utilizes high-pressure gas to unload car turbocharging system | |
| CN110761920A (en) | Low-pressure gas supply system suitable for small ships | |
| CN102230569A (en) | Liquefied natural gas storage system, gas filling device and gas supply device for engine | |
| CN104165266B (en) | A kind of pressure reduction formula liquefied natural gas filling station adds injection system and method thereof | |
| CN210601032U (en) | Novel liquefied natural gas unloading system capable of being started quickly | |
| CN108626568B (en) | Low-energy-consumption LNG (liquefied Natural gas) filling system with BOG (boil off gas) recycling function and filling method | |
| CN216447916U (en) | Low temperature liquid is with device of unloading | |
| CN206176030U (en) | Quick supercharging device of cryogenic liquid basin | |
| CN215862866U (en) | LNG loading and unloading vehicle system | |
| CN215372034U (en) | Box type single-pump LNG (liquefied Natural gas) station process system | |
| CN211232396U (en) | Liquefied natural gas LNG system of unloading | |
| CN109654371B (en) | Intelligent ultralow-temperature liquid unloading device and unloading process | |
| CN212390102U (en) | LNG unloading system with combined use of pipeline pressurization and cryogenic pump | |
| CN210179314U (en) | Marine LNG gas supply system | |
| CN208253191U (en) | A kind of liquefied natural gas liquid-supplying system | |
| CN206439622U (en) | Defeated system outside a kind of liquefied natural gas receiving station | |
| CN215294565U (en) | Hydrogen supply system | |
| CN210241173U (en) | Device for improving liquid unloading speed of LNG tank car | |
| CN219654781U (en) | 9H-level dual-fuel combined cycle unit gas sealing water supply system | |
| CN217501824U (en) | Pressurization gas supply system for vehicle liquefied natural gas cylinder | |
| CN108194826B (en) | A kind of LNG refueling system | |
| CN110469771B (en) | Novel liquefied natural gas unloading system capable of being started quickly | |
| CN211902362U (en) | Low-temperature liquid filling system of double-tank process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |