CN104390127B - A kind of filling technique of LNG skid filling station - Google Patents
A kind of filling technique of LNG skid filling station Download PDFInfo
- Publication number
- CN104390127B CN104390127B CN201410491234.0A CN201410491234A CN104390127B CN 104390127 B CN104390127 B CN 104390127B CN 201410491234 A CN201410491234 A CN 201410491234A CN 104390127 B CN104390127 B CN 104390127B
- Authority
- CN
- China
- Prior art keywords
- pump
- storage tank
- pressure
- lng
- filling
- 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.)
- Expired - Fee Related
Links
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The present invention relates to LNG gas station aerating technical field, particularly relate to a kind of filling technique of LNG skid filling station, the process engineering of this LNG skid filling station is divided into flow process of unloading, regulating process, filling flow process and release flow process four part, this technology path makes full use of that cryopump carries out unloading, pressure regulation and aerating, greatly reduce the Equipments Setting of gas station, shorten flow process pipeline, be the basis realizing skid, achieve good economic benefit and there is good use value.
Description
Technical field
The present invention relates to LNG filling station aerating technical field, particularly a kind of filling technique of LNG skid filling station.
Background technique
LNG Liquefied natural gas (LNG) automobile is a kind of novel environment friendly automobile grown up after compressed natural gas (CNG) and liquefied petroleum gas (LPG) (LPG) automobile, also be a kind of gas-fueled vehicles in essence, the LNG carried due to automobile has low, the required fuel tank of high fuel density, pressure from advantages such as heavy and lights than CNG, comparatively CNG is much far away for the distance travelled (300-800KM) of an automobile aerating, LNG can transport again simultaneously as oil product, and its these features make it have stronger practicability.
Since the starting of LNG automotive engineering, the country of each main prosperity in the world all attaches great importance to exploitation and the popularization of this technology, China also starts to walk in this respect at leisure, portion of techniques and equipment, such as storage facilities, pipeline and cold insulation, Subzero valve, control technique etc. can meet the needs of LNG Development Of LPG Service Station substantially, but technically still come with some shortcomings.Be mainly manifested in following several aspect:
(1) there is irrational place in general technical route;
(2) cryopump and supporting technology thereof are perfect not;
(3) system insulation is poor, and evaporation loss rate is high;
(4) gas selling machine measuring accuracy and gas selling machine flow process do not reach desirable state;
(5) gas station does not mate with vehicle systems;
(6) pipeline fluid state control techniques does not pass a test, and leaks heat, relative evaporation index is bigger than normal;
(7) safety detection and control technique are not agreed to, reliability is not high;
(8) critical component, as cryopump, control valve etc., people needs import, and cost is higher;
(9) without design, construction specification, declaration is promoted more difficult.
Skid-mounted LNG gas station does not rely on gas distributing system and source of the gas, floor space is little, integration degree is high, advanced technology, safe and reliable, invest little, the cycle of building a station is short, be easy to operation and resettlement, maneuverability; But skid-mounted LNG gas station has special requirement to safety and energy consumption, result in the Security how improving operation and use, and reduction skid-mounted LNG energy consumption becomes technical barrier.
Summary of the invention
In order to overcome the deficiency of above-mentioned traditional LNG gas station process engineering, the invention provides a kind of filling technique of LNG skid filling station.
The present invention is realized by following technological method:
A kind of filling technique of LNG skid filling station, comprise four flow processs, be respectively: flow process of unloading, regulating process, filling flow process, release flow process, system to be adjusted to the pattern of unloading, pressure regulation pattern by means of intelligent control dish, to add injection-molded, to unload die pressing type by described four flow processs respectively; Described flow process of unloading comprises: (1) air in tube of unloading blows to emptying house steward, intelligent control dish is adjusted to the pattern of unloading and makes the pressure balance between storage tank and tank car and reach setting pressure; (2) when pressure of storage tank is down to setting pressure, after the precooling of control system startup pump makes pump temperature reach setting temperature, start pump and also carry out topping up to storage tank; (3) when pump suction sky or tank level reach 90%, system autostop; Described regulating process comprises: intelligent control dish is adjusted to regulating process by (1), makes the pressure in storage tank reach predetermined value by the running state of control pump; (2) when pressure of storage tank reaches predetermined value, system is transformed into holding state automatically; The described injection-molded that adds comprises: intelligent control dish is adjusted to and adds injection-molded by (1), and LNG liquid can flow back to storage tank and make pump precooling; (2) when the temperature of pump reaches requirement, aerating button is pressed, pump startup self-loopa; (3), when the flow meter temperature of gas selling machine and delivery side of pump pressure reach predetermined value, system is sustainable to car aerating, when aerating speed stops aerating automatically lower than during setting value; Described release flow process comprises: be adjusted to by intelligent control dish and unload die pressing type, when system pressure is greater than setting value, opens the gas in the safety valve delivery system in system.
As to such scheme further preferably, described pump is low temperature immersed pump; Also being provided with supercharging vaporizer in described filling station is that filling station carries out supercharging in the process of filling LNG, and the import of supercharging vaporizer connects the liquid outlet of storage tank and pump, and the outlet of supercharging vaporizer is connected to the inner chamber of storage tank.
As to such scheme further preferably, BOG gas passes through compressor pressurizes, the LNG of uniform pressure sent by immersed pump in storage tank, both direct heat transfers within the condenser according to a certain percentage, LNG excessively cold after pressurization utilizes " aobvious cold " by most of BOG condensation of gas, through the pressurization of second level pump, send into storage tank through supercharging vaporizer.
Compared with prior art, tool has the following advantages in the present invention:
By adopting the ripe production technology with protection pressure adjusting function, gas station directly provides the saturated gas of pressure needed for vehicle, to ensure the stable air feed of LNG motor car engine; Adopt closed process, both ensure that production safety, and additionally reduced the loss of LNG, and served the effect of protection of the environment; There is pump to unload at a high speed and artificial pressure is unloaded the unloading way combined, even if power down mode also can be unloaded, there is very large flexibility; Adopt high vacuum pipeline, high vacuum pump and exclusive heat insulation measures, realize low cold damage, low emptying; Adopt thermal siphon low-temperature storage tank, reduce the pre-coo time of pump; Storage tank flow process and system flow integrated design, the matching of storage tank, cryopump, gas selling machine three is good.
Accompanying drawing explanation
Accompanying drawing 1 is the filling process schematic representation of LNG skid filling station.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
A kind of filling technique of LNG skid filling station, comprise four flow processs, be respectively: flow process of unloading, regulating process, filling flow process, release flow process, system to be adjusted to the pattern of unloading, pressure regulation pattern by means of intelligent control dish, to add injection-molded, to unload die pressing type by described four flow processs respectively; Described flow process of unloading comprises: (1) connects tank car and river for transporting grain to the capital informer times with flexible pipe and to unload mouth, open V3, V4 valve, being sent out by V1, V2 blows to emptying house steward by air in tube of unloading, and intelligent control dish is adjusted to the pattern of unloading and makes the pressure balance between storage tank and tank car (V14-GV4-pump-V4-liquid phase mouth-tank car liquid phase) and reach setting pressure; (2) when pressure of storage tank is down to setting pressure, control system starts pump precooling (cut-off valve GV4, tank car liquid phase mouth-V4-pump-V3-tank car gas phase mouth) make pump temperature reach setting temperature after, system is automatic or manually boot pump and carry out topping up to storage tank, topping up is divided into topping up and lower topping up, upper topping up is cut-off valve V3, opens valve GV2, is realized by implementation of port on tank car liquid phase mouth-valve V4-pump-valve GV1-valve GV2-valve V7-storage tank; Lower topping up progressively reduces at tank inner pressure and when tank inner pressure carries out lower topping up lower than just automatically starting during tank car pressure certain value, makes topping up and lower topping up carry out reaching the balance of air pressure simultaneously; (3) when pump suction sky or tank level reach 90%, system autostop; Described regulating process comprises: intelligent control dish is adjusted to regulating process by (1), makes the pressure in storage tank reach predetermined value by the running state of control pump; (2) when pressure of storage tank reaches predetermined value, system is transformed into holding state automatically; The described injection-molded that adds comprises: intelligent control dish is adjusted to and adds injection-molded by (1), and LNG liquid can flow back to storage tank and make pump precooling; (2) when the temperature of pump reaches requirement, aerating button is pressed, pump startup self-loopa; (3), when the flow meter temperature of gas selling machine and delivery side of pump pressure reach predetermined value, system is sustainable to car aerating, when aerating speed stops aerating automatically lower than during setting value; Described release flow process comprises: be adjusted to by intelligent control dish and unload die pressing type, when system pressure is greater than setting value, opens the gas in the safety valve delivery system in system; Described pump is low temperature immersed pump; Also being provided with supercharging vaporizer in described filling station is that filling station carries out supercharging in the process of filling LNG, and the import of supercharging vaporizer connects the liquid outlet of storage tank and pump, and the outlet of supercharging vaporizer is connected to the inner chamber of storage tank; BOG gas passes through compressor pressurizes, the LNG of uniform pressure sent by immersed pump in storage tank, and both are direct heat transfer within the condenser according to a certain percentage, and LNG excessively cold after pressurization utilizes " aobvious cold " by most of BOG condensation of gas, through the pressurization of second level pump, send into storage tank through supercharging vaporizer.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to technology contents of the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technological scheme of the present invention.
Claims (1)
1. the filling technique of a LNG skid filling station, it is characterized in that: comprise four flow processs, be respectively: flow process of unloading, regulating process, filling flow process, release flow process, system to be adjusted to the pattern of unloading, pressure regulation pattern by means of intelligent control dish, to add injection-molded, to unload die pressing type by described four flow processs respectively;
Described flow process of unloading comprises: air in tube of 1) unloading blows to emptying house steward, intelligent control dish is adjusted to the pattern of unloading and makes the pressure balance between storage tank and tank car and reach setting pressure; 2) when pressure of storage tank is down to setting pressure, after the precooling of control system startup pump makes pump temperature reach setting temperature, start pump and also carry out topping up to storage tank; 3) when pump suction sky or tank level reach 90%, system autostop;
Described regulating process comprises: 1) intelligent control dish is adjusted to regulating process and makes the pressure in storage tank reach predetermined value by the running state of control pump; 2) when pressure of storage tank reaches predetermined value, system is transformed into holding state automatically;
The described injection-molded that adds comprises: 1) be adjusted to by intelligent control dish and add injection-molded, and LNG liquid can flow back to storage tank and make pump precooling; 2) when the temperature of pump reaches requirement, aerating button is pressed, pump startup self-loopa; 3), when the flow meter temperature of gas selling machine and delivery side of pump pressure reach predetermined value, system is sustainable to car aerating, when aerating speed stops aerating automatically lower than during setting value;
Described release flow process comprises: be adjusted to by intelligent control dish and unload die pressing type, when system pressure is greater than setting value, opens the gas in the safety valve delivery system in system;
Described pump is low temperature immersed pump; Also being provided with supercharging vaporizer in described filling station is that filling station carries out supercharging in the process of filling LNG, and the import of supercharging vaporizer connects the liquid outlet of storage tank and pump, and the outlet of supercharging vaporizer is connected to the inner chamber of storage tank; BOG gas passes through compressor pressurizes, the LNG of uniform pressure sent by immersed pump in storage tank, and both are direct heat transfer within the condenser according to a certain percentage, and LNG excessively cold after pressurization utilizes " aobvious cold " by most of BOG condensation of gas, through the pressurization of second level pump, send into storage tank through supercharging vaporizer; Described storage tank is thermal siphon low-temperature storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410491234.0A CN104390127B (en) | 2014-09-24 | 2014-09-24 | A kind of filling technique of LNG skid filling station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410491234.0A CN104390127B (en) | 2014-09-24 | 2014-09-24 | A kind of filling technique of LNG skid filling station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104390127A CN104390127A (en) | 2015-03-04 |
| CN104390127B true CN104390127B (en) | 2016-04-13 |
Family
ID=52608066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410491234.0A Expired - Fee Related CN104390127B (en) | 2014-09-24 | 2014-09-24 | A kind of filling technique of LNG skid filling station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104390127B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11207837B2 (en) | 2015-04-17 | 2021-12-28 | Eos Gmbh Electro Optical Systems | Method and control command generating unit for an automatic generation of control commands of an additive layer-wise building device |
| CN105020577B (en) * | 2015-07-29 | 2017-08-15 | 重庆耐德能源装备集成有限公司 | The LNG of accurate measurement unloads method and LNG unloads metering device |
| CN106051457B (en) * | 2016-06-02 | 2018-06-08 | 天津佰焰科技股份有限公司 | A kind of mono- immersed pump three-level aerating station control systems of LNG |
| CN108105584A (en) * | 2017-12-21 | 2018-06-01 | 沈阳航天新光压力容器有限公司 | A kind of LNG Storage, Transport method using low-temperature storage tank |
| CN108194825B (en) * | 2018-01-10 | 2023-08-22 | 北京微焓科技有限公司 | Improved normal-temperature gaseous working medium quantitative filling system and filling method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1172198A (en) * | 1998-07-10 | 1999-03-16 | Komayoshi Yasuoka | Low temperature gas recovering method of ce equipment |
| CN101975335A (en) * | 2010-09-26 | 2011-02-16 | 上海交通大学 | Reliquefaction device for boil-off gas from liquefied natural gas vehicle gas filling station |
| CN202125725U (en) * | 2011-05-13 | 2012-01-25 | 天津华迈燃气装备股份有限公司 | Skid-mounted type liquefied natural gas filling device for automobile |
| CN102635783A (en) * | 2012-04-11 | 2012-08-15 | 重庆巨创计量设备股份有限公司 | Safe energy-saving LNG (Liquefied Natural Gas) skid-mounted filling station |
| CN203010197U (en) * | 2012-11-14 | 2013-06-19 | 天津安耐吉燃气技术有限公司 | Skid-mounted liquefied natural gas automobile refueling device |
| CN203656568U (en) * | 2013-12-13 | 2014-06-18 | 青岛捷能高新技术有限责任公司 | LNG (Liquefied Natural Gas) loading system for automobile |
| CN203836579U (en) * | 2014-05-08 | 2014-09-17 | 中国石油集团渤海石油装备制造有限公司 | Prying-type LNG (liquefied natural gas) refueling station |
-
2014
- 2014-09-24 CN CN201410491234.0A patent/CN104390127B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1172198A (en) * | 1998-07-10 | 1999-03-16 | Komayoshi Yasuoka | Low temperature gas recovering method of ce equipment |
| CN101975335A (en) * | 2010-09-26 | 2011-02-16 | 上海交通大学 | Reliquefaction device for boil-off gas from liquefied natural gas vehicle gas filling station |
| CN202125725U (en) * | 2011-05-13 | 2012-01-25 | 天津华迈燃气装备股份有限公司 | Skid-mounted type liquefied natural gas filling device for automobile |
| CN102635783A (en) * | 2012-04-11 | 2012-08-15 | 重庆巨创计量设备股份有限公司 | Safe energy-saving LNG (Liquefied Natural Gas) skid-mounted filling station |
| CN203010197U (en) * | 2012-11-14 | 2013-06-19 | 天津安耐吉燃气技术有限公司 | Skid-mounted liquefied natural gas automobile refueling device |
| CN203656568U (en) * | 2013-12-13 | 2014-06-18 | 青岛捷能高新技术有限责任公司 | LNG (Liquefied Natural Gas) loading system for automobile |
| CN203836579U (en) * | 2014-05-08 | 2014-09-17 | 中国石油集团渤海石油装备制造有限公司 | Prying-type LNG (liquefied natural gas) refueling station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104390127A (en) | 2015-03-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104390127B (en) | A kind of filling technique of LNG skid filling station | |
| CN107076358B (en) | It is unloaded with BOG accumulation of energy pressure difference LNG gas station, liquid feeding, re-liquefied and accumulation of energy method | |
| CN201672248U (en) | Unloading charging device for LNG | |
| CN207298367U (en) | A kind of skid of unloading with low-temperature centrifugal pump with the LNG for being pressurized gasifier is put | |
| CN203731079U (en) | LNG (Liquefied Natural Gas) filling system for inland lake ship | |
| CN108361547B (en) | Novel LNG (liquefied Natural gas) filling station and working method thereof | |
| CN203731088U (en) | LNG receiving station process system for recovering BOG based on normal temperature compressor | |
| CN201964142U (en) | LNG (liquefied natural gas) pump-free aeration equipment with function of BOG (boil off gas) recovery | |
| CN104456070B (en) | Unload the method for gas and storage tank flashed vapour for reclaiming LNG Vehicle Fueling Station tank car | |
| CN102537659B (en) | Self-supercharging LNG (liquefied natural gas) movable filling device and filling method thereof | |
| CN204345267U (en) | A kind of small-sized LNG gas station storage tank BOG recovering device | |
| US20140075965A1 (en) | Self-saturating liquefied natural gas delivery system utilizing hydraulic pressure | |
| CN105089857A (en) | LNG-CNG dual fuel power gas supply system and natural gas automobile | |
| CN105179930A (en) | Liquefied natural gas tank car unloading device of liquefied natural gas and compressed natural gas cooperative station and application | |
| KR101059869B1 (en) | Regasification Facility of LNG | |
| US6257017B1 (en) | Process for producing a displacement gas to unload pressurized liquefied gas from containers | |
| CN105020574A (en) | L-CNG gas station | |
| CN206191267U (en) | Gas circulation formula gas station | |
| CN205560279U (en) | Dodge vapor recovery storage device | |
| CN104763875A (en) | Liquid unloading method for liquefied natural gas or coal gas | |
| CN109595460A (en) | A kind of LNG system, which is unloaded, is pressurized shared sledge device | |
| CN202791322U (en) | LNG (liquefied natural gas) gasification station | |
| CN204387677U (en) | A kind of skid-mounted gas filling station | |
| CN106481972B (en) | Gas station and its power device and control method | |
| CN102913753A (en) | Storage and gasification project output system of LNG (Liquefied Natural Gas) receiving terminal as well as method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210706 Address after: 100007 liupukang, Dongcheng District, Beijing Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC BOHAI EQUIPMENT MANUFACTURING Co.,Ltd. Address before: 062552 Bohai Road Petroleum Equipment Manufacturing Co., Ltd., Renqiu City, Hebei Province Patentee before: CNPC BOHAI EQUIPMENT MANUFACTURING Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |