CN103615659A - Gasification and self-supercharging device for LNG (Liquefied Natural Gas) - Google Patents
Gasification and self-supercharging device for LNG (Liquefied Natural Gas) Download PDFInfo
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- CN103615659A CN103615659A CN201310592983.8A CN201310592983A CN103615659A CN 103615659 A CN103615659 A CN 103615659A CN 201310592983 A CN201310592983 A CN 201310592983A CN 103615659 A CN103615659 A CN 103615659A
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Abstract
The invention discloses a gasification and self-supercharging device for LNG (Liquefied Natural Gas), which is applied to a power ship. The power ship is provided with an LNG fuel gas storage tank, a power system and an engine control system. The gasification and self-supercharging device comprises a heat exchanger and an auxiliary hot water unit; the heat exchanger is provided with a hot water input end, a cold water output end, a supercharging liquid-phase input end, a supercharging gas-phase output end, a fuel liquid-phase input end and a fuel gas-phase output end; the LNG fuel gas storage tank is connected with the supercharging liquid-phase input end and the fuel liquid-phase input end of the heat exchanger, respectively; the supercharging gas-phase output end of the heat exchanger is connected with the LNG fuel gas storage tank; the fuel gas-phase output end of the heat exchanger is connected with a gas inlet connector of the power system; the auxiliary hot water unit is connected with the hot water input end of the heat exchanger. The gasification and self-supercharging device for the LNG is simple in structure, low in cost and safe and reliable, and energy sources are saved.
Description
Technical field
The present invention relates to a kind of vaporization and self-supercharging device, especially relate to vaporization and self-supercharging device for LNG, belong to technical field of ships.
Background technique
LNG(liquified natural gas) key component is methane, and contains a small amount of ethane, propane, nitrogen or other common components, and the exhausting air after burning be take water as main,, containing any particulate pollutant, is not called as " clean energy resource ".
As efficient, safe, the cheap clean energy resource of generally acknowledging in the world, just progressively at aspects such as industry, communications and transportation, resident living, be widely used, it has been mature technology that LNG is applied to marine engine as New-type fuel, yet LNG fuels and energy marine equipment equipment need development.LNG fuels and energy boats and ships can steady steaming, must supply with for natural gas engine provide stable fuel.The initial liquefaction rock gas that is filled into storage tank is generally all under atmospheric pressure state, first must carry out from supercharging storage tank, when pressure is increased to after the specified range of working pressure of natural gas engine, start again motor to carry out air feed, after LNG uses to a certain degree, pressure in storage tank can reduce, if do not have self-supercharging device can make pressure lower than the specified range of working pressure of natural gas engine, affects the navigation of boats and ships.
Summary of the invention
The object of the present invention is to provide vaporization and the self-supercharging device of a kind of LNG simple and compact for structure.
The present invention is achieved by the following technical programs:
The vaporization of a kind of LNG and self-supercharging device, be applied on powered ship, powered ship is provided with LNG fuel storing gas tank, power system, engine control system, LNG fuel storing gas tank is connected with power system by vaporization and self-supercharging device, engine control system is connected with power system, and vaporization and self-supercharging device are arranged on gas tank and link in institute; Vaporization and self-supercharging device comprise heat exchanger, auxiliary heat water unit; Heat exchanger is provided with hot water input end, cold water output terminal, supercharging liquid phase input end, supercharging gas phase output terminal, fuel liquid phase input end, fuel gas phase output terminal, supercharging liquid phase input end is connected in the inside of heat exchanger with supercharging gas phase output terminal, and fuel liquid phase input end is connected with the inside of fuel gas phase output terminal at heat exchanger; LNG fuel storing gas tank is connected with supercharging liquid phase input end, the fuel liquid phase input end of heat exchanger respectively by pipeline; The supercharging gas phase output terminal of heat exchanger is connected with LNG fuel storing gas tank by pipeline; The fuel gas phase output terminal of heat exchanger is connected with the intake interface of power system by pipeline; Auxiliary heat water unit is connected with the hot water input end of heat exchanger; The High-temperature cooling water out of power system is connected with the hot water input end of heat exchanger; The cold water output terminal of heat exchanger by device for cleaning pipeline to boats and ships outboard, engine control system control connection auxiliary heat water unit.
Object of the present invention can also further realize by following technical measures:
The vaporization of aforesaid a kind of LNG and self-supercharging device, be provided with cryogenic globe valve one and pressure regulator valve on the pipeline being connected at LNG fuel storing gas tank with the supercharging liquid phase input end of heat exchanger.
The vaporization of aforesaid a kind of LNG and self-supercharging device, be provided with cryogenic globe valve two on the pipeline being connected at LNG fuel storing gas tank with the fuel liquid phase input end of heat exchanger.
The vaporization of aforesaid a kind of LNG and self-supercharging device, be provided with cryogenic globe valve three on the pipeline being connected at the supercharging gas phase output terminal of heat exchanger with LNG fuel storing gas tank.
The vaporization of aforesaid a kind of LNG and self-supercharging device, be provided with automatic stop valve on the pipeline being connected at the fuel gas phase output terminal of heat exchanger with the intake interface of power system.
The vaporization of aforesaid a kind of LNG and self-supercharging device, vaporization and self-supercharging device are also provided with low temperature alarm, and low temperature alarm is arranged on the pipeline of cold water output terminal of heat exchanger, and low temperature alarm connects control by engine control system.
The present invention is vaporized into NG(gaseous natural gas by heat exchanger by LNG), heat exchanger of the present invention has two effects: one, the supercharging gas phase output terminal of NG by heat exchanger is input in LNG fuel storing gas tank and carries out supercharging, utilize NG supercharging, without extra device, cost-saving; Two, by fuel gas phase output terminal, to power system, provide fuel; Before starting power system, auxiliary heat water unit is to heat exchanger preheating, the pressure of NG is reached after the rated working pressure scope of power system, change high-temperature cooling water by power system to heat exchanger heat supply, only need just start to start auxiliary heat water unit, follow-uply all by power system, provide thermal source, energy saving; The present invention is also provided with low temperature alarm device, for monitoring the temperature of the cold water output terminal of heat exchanger, alarm when temperature is too low; The present invention is arranged on gas tank and links in institute, reduced the quantity of LNG powered ship hazardous gas point of release, thereby dwindle LNG powered ship gas deathtrap, reach the object that reduces storage tank corollary equipment cost, optimizes boats and ships layout, become the key equipment of LNG fuels and energy boats and ships.
Advantage and disadvantage of the present invention, the non-limitative illustration by preferred embodiment below is for illustration and explanation, and these embodiments, only provide as an example with reference to accompanying drawing.
Accompanying drawing explanation
Fig. 1 is structural drawing of the present invention;
Fig. 2 is the connection diagram of heat exchanger of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1 and Figure 2, the LNG fuels and energy boats and ships of the implementation case are one and navigate by water in the LNG fuels and energy dry cargo ship of A level navigating area, inland river.This ship and existing inland river LNG fuels and energy dry cargo ship are basic identical in hull structure, be Double bottom, two side of a ship, single deck, cargo area is that longitudinal framing, initial and tail sections are transverse system, tail type cabin, ship stern is provided with LNG fuel storing gas tank 1, also be provided with power system 3, engine control system 5, LNG fuel storing gas tank 1 is connected with power system 3 by vaporization and self-supercharging device, and engine control system 5 is connected with power system 3.
Vaporization and self-supercharging device are arranged on gas tank and link in institute 8; Vaporization and self-supercharging device comprise heat exchanger 2, auxiliary heat water unit 6, low temperature alarm 4; Heat exchanger 2 is provided with hot water input end 300, cold water output terminal 301, supercharging liquid phase input end 100, supercharging gas phase output terminal 104, fuel liquid phase input end 200, fuel gas phase output terminal 203, supercharging liquid phase input end 100 is connected in the inside of heat exchanger 2 with supercharging gas phase output terminal 104, and fuel liquid phase input end 200 is connected with the inside of fuel gas phase output terminal 203 at heat exchanger 2; LNG fuel storing gas tank 1 is connected with supercharging liquid phase input end 100, the fuel liquid phase input end 200 of heat exchanger 2 respectively by pipeline; The supercharging gas phase output terminal 104 of heat exchanger 2 is connected with LNG fuel storing gas tank 1 by pipeline; The fuel gas phase output terminal 203 of heat exchanger 2 is connected with the intake interface 32 of power system 3 by pipeline; Auxiliary heat water unit 6 is connected with the hot water input end 300 of heat exchanger 2; The High-temperature cooling water out 31 of power system 3 is connected with the hot water input end 300 of heat exchanger 2; The cold water output terminal 301 of heat exchanger 2 by device for cleaning pipeline to boats and ships outboard 7, engine control system 5 control connection auxiliary heat water units 6; Low temperature alarm 4 is arranged on the pipeline of cold water output terminal 301 of heat exchanger 2, and low temperature alarm 4 is connected and controlled by engine control system 5; On the pipeline being connected with the supercharging liquid phase input end 100 of heat exchanger 2 at LNG fuel storing gas tank 1, be provided with cryogenic globe valve 1 and pressure regulator valve 102; On the pipeline being connected with the fuel liquid phase input end 200 of heat exchanger 2 at LNG fuel storing gas tank 1, be provided with cryogenic globe valve 2 201; On the pipeline being connected with LNG fuel storing gas tank 1 at the supercharging gas phase output terminal 104 of heat exchanger 2, be provided with cryogenic globe valve 3 103; On the pipeline being connected at the fuel gas phase output terminal 203 of heat exchanger 2 and the intake interface 32 of power system 3, be provided with automatic stop valve 202.
Before power system 3 starts, engine control system 5 is opened auxiliary heat water unit 3,3 heat exchanger 2 preheatings of auxiliary heat water unit, by hot water input end 300, entered, by cold water output terminal 301, flowed out, through boats and ships outboard 7, discharge, LNG enters heat exchanger 2 through cryogenic globe valve 1, unlatching pressure regulator valve 102, supercharging liquid phase input end 100, vaporization is returned to LNG fuel storing gas tank 1 by cryogenic globe valve 3 103, pressurized machine gas phase output terminal 104, completes LNG fuel storing gas tank 1 from supercharging.
LNG fuel storing gas tank 1 reaches after requirement from supercharging, LNG fuel is entered heat exchanger 2 and is vaporized by cryogenic globe valve 2 201, fuel liquid phase input end 200, vaporization enters power system 3 by automatic stop valve 202 by fuel gas phase output terminal 203, now engine control system 5 starts power system 3, after running well, power system 3 produces high-temperature cooling water, high-temperature cooling water is that outlet 31 inflow hot water input ends 300 enter heat exchanger 2 by High-temperature cooling, now, engine control system 5 is closed auxiliary heat water unit 6, completes power system 3 startup work.
Engine control system 5 is controlled power system 3 air inflows and monitors every Operational Limits, LNG fuel storing gas tank 1 is when to power system 3 air feed, liquid in LNG fuel storing gas tank 1 can constantly be discharged, corresponding liquid Space constantly reduces, gas-phase space constantly increases, pressure in LNG fuel storing gas tank 1 can decline again gradually, and in air feed process, pressure regulator valve 102 carries out voltage stabilizing according to default pressure for this reason, to guarantee that supply gas pressure is in the range of working pressure of regulation.The cooling water that power system 3 provides operation to produce for heat exchanger 2, temperature is more than 45 ℃, when low temperature alarm device 4 detects cooling water temperature, gives the alarm when too low, starts auxiliary heat water unit 6.
In addition to the implementation, the present invention can also have other mode of executions, and all employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop in the protection domain of requirement of the present invention.
Claims (6)
1. the vaporization of a LNG and self-supercharging device, be applied on powered ship, described powered ship is provided with LNG fuel storing gas tank, power system, engine control system, described LNG fuel storing gas tank is connected with power system by vaporization and self-supercharging device, engine control system is connected with power system, it is characterized in that: described vaporization and self-supercharging device are arranged on gas tank and link in institute; Described vaporization and self-supercharging device comprise heat exchanger, auxiliary heat water unit; Described heat exchanger is provided with hot water input end, cold water output terminal, supercharging liquid phase input end, supercharging gas phase output terminal, fuel liquid phase input end, fuel gas phase output terminal, described supercharging liquid phase input end is connected in the inside of heat exchanger with supercharging gas phase output terminal, and described fuel liquid phase input end is connected with the inside of fuel gas phase output terminal at heat exchanger; Described LNG fuel storing gas tank is connected with supercharging liquid phase input end, the fuel liquid phase input end of heat exchanger respectively by pipeline; The supercharging gas phase output terminal of described heat exchanger is connected with LNG fuel storing gas tank by pipeline; The fuel gas phase output terminal of described heat exchanger is connected with the intake interface of described power system by pipeline; Described auxiliary heat water unit is connected with the hot water input end of heat exchanger; The High-temperature cooling water out of described power system is connected with the hot water input end of heat exchanger; The cold water output terminal of described heat exchanger by device for cleaning pipeline to boats and ships outboard, described engine control system control connection auxiliary heat water unit.
2. the vaporization of a kind of LNG as claimed in claim 1 and self-supercharging device, is characterized in that: on the pipeline being connected with the supercharging liquid phase input end of heat exchanger at described LNG fuel storing gas tank, be provided with cryogenic globe valve one and pressure regulator valve.
3. the vaporization of a kind of LNG as claimed in claim 1 and self-supercharging device, is characterized in that: on the pipeline being connected with the fuel liquid phase input end of heat exchanger at described LNG fuel storing gas tank, be provided with cryogenic globe valve two.
4. the vaporization of a kind of LNG as claimed in claim 1 and self-supercharging device, is characterized in that: on the pipeline being connected with LNG fuel storing gas tank at the supercharging gas phase output terminal of described heat exchanger, be provided with cryogenic globe valve three.
5. the vaporization of a kind of LNG as claimed in claim 1 and self-supercharging device, is characterized in that: on the pipeline being connected with the intake interface of described power system at the fuel gas phase output terminal of described heat exchanger, be provided with automatic stop valve.
6. the vaporization of a kind of LNG as claimed in claim 1 and self-supercharging device, it is characterized in that: vaporization and self-supercharging device are also provided with low temperature alarm, described low temperature alarm is arranged on the pipeline of cold water output terminal of heat exchanger, and described low temperature alarm connects control by engine control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310592983.8A CN103615659A (en) | 2013-11-22 | 2013-11-22 | Gasification and self-supercharging device for LNG (Liquefied Natural Gas) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310592983.8A CN103615659A (en) | 2013-11-22 | 2013-11-22 | Gasification and self-supercharging device for LNG (Liquefied Natural Gas) |
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| CN103615659A true CN103615659A (en) | 2014-03-05 |
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| CN201310592983.8A Pending CN103615659A (en) | 2013-11-22 | 2013-11-22 | Gasification and self-supercharging device for LNG (Liquefied Natural Gas) |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791602A (en) * | 2015-04-27 | 2015-07-22 | 武汉交圣新能源工程有限公司 | LNG (liquefied natural gas) fuel supply method and device utilizing BOG (boil-off gas) preferentially |
| CN104929813A (en) * | 2015-06-23 | 2015-09-23 | 杭叉集团股份有限公司 | LNG storage and supply system for forklift |
| CN105089857A (en) * | 2015-07-22 | 2015-11-25 | 诸城福田汽车科技开发有限公司 | LNG-CNG dual fuel power gas supply system and natural gas automobile |
| CN105782721A (en) * | 2016-03-27 | 2016-07-20 | 丛树利 | Method for transmitting liquefied petroleum gas by virtue of temperature difference pressurization |
| CN112361209A (en) * | 2020-09-23 | 2021-02-12 | 北京强度环境研究所 | Liquid nitrogen vaporization voltage stabilizing system |
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| US20100192597A1 (en) * | 2002-02-27 | 2010-08-05 | Excelerate Energy Limited Partnership | Method and Apparatus for the Regasification of LNG Onboard a Carrier |
| CN201865777U (en) * | 2010-11-29 | 2011-06-15 | 北京中兴恒和能源科技有限公司 | Electric control system of dual-fuel engine of liquefied natural gas or diesel ship |
| CN102235274A (en) * | 2010-04-27 | 2011-11-09 | 潍柴动力股份有限公司 | Liquefied fuel power system and method for operating same |
| CN203161377U (en) * | 2013-01-23 | 2013-08-28 | 国鸿液化气机械工程（大连）有限公司 | Gas fuel supply system of marine power plant |
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2013
- 2013-11-22 CN CN201310592983.8A patent/CN103615659A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100192597A1 (en) * | 2002-02-27 | 2010-08-05 | Excelerate Energy Limited Partnership | Method and Apparatus for the Regasification of LNG Onboard a Carrier |
| CN102235274A (en) * | 2010-04-27 | 2011-11-09 | 潍柴动力股份有限公司 | Liquefied fuel power system and method for operating same |
| CN201865777U (en) * | 2010-11-29 | 2011-06-15 | 北京中兴恒和能源科技有限公司 | Electric control system of dual-fuel engine of liquefied natural gas or diesel ship |
| CN203161377U (en) * | 2013-01-23 | 2013-08-28 | 国鸿液化气机械工程（大连）有限公司 | Gas fuel supply system of marine power plant |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791602A (en) * | 2015-04-27 | 2015-07-22 | 武汉交圣新能源工程有限公司 | LNG (liquefied natural gas) fuel supply method and device utilizing BOG (boil-off gas) preferentially |
| CN104791602B (en) * | 2015-04-27 | 2018-06-05 | 武汉交圣新能源工程有限公司 | The LNG gaseous fuels air supply method and device that BOG is preferentially utilized |
| CN104929813A (en) * | 2015-06-23 | 2015-09-23 | 杭叉集团股份有限公司 | LNG storage and supply system for forklift |
| CN105089857A (en) * | 2015-07-22 | 2015-11-25 | 诸城福田汽车科技开发有限公司 | LNG-CNG dual fuel power gas supply system and natural gas automobile |
| CN105089857B (en) * | 2015-07-22 | 2019-02-26 | 北汽福田汽车股份有限公司 | A kind of LNG-CNG double fuel power air supply system and natural gas vehicle |
| CN105782721A (en) * | 2016-03-27 | 2016-07-20 | 丛树利 | Method for transmitting liquefied petroleum gas by virtue of temperature difference pressurization |
| CN112361209A (en) * | 2020-09-23 | 2021-02-12 | 北京强度环境研究所 | Liquid nitrogen vaporization voltage stabilizing system |
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Application publication date: 20140305 |