CN1752507A - Pressure control device for liquefied natural gas storage tank - Google Patents
Pressure control device for liquefied natural gas storage tank Download PDFInfo
- Publication number
- CN1752507A CN1752507A CN 200510018033 CN200510018033A CN1752507A CN 1752507 A CN1752507 A CN 1752507A CN 200510018033 CN200510018033 CN 200510018033 CN 200510018033 A CN200510018033 A CN 200510018033A CN 1752507 A CN1752507 A CN 1752507A
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- CN
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- Prior art keywords
- valve
- natural gas
- liquefied natural
- storage tank
- pressure
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- 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.)
- Granted
Links
- 239000003949 liquefied natural gas Substances 0.000 title claims abstract description 76
- 239000007788 liquid Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 239000007792 gaseous phase Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000006200 vaporizer Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 239000000446 fuel Substances 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to a pressure control device of an liquefied natural gas storage tank for a small and medium-sized station in the field of liquefied natural gas storage and transportation, which is mainly formed by connecting an liquefied natural gas storage tank, a storage tank supercharger, a pressure-increasing regulating valve, a flash gas heater, a pressure-reducing regulating valve and an overpressure release valve.
Description
One, technical field: what the present invention relates to is a kind of middle-size and small-size station pressure controller for liquefied natural gas cylinder, the especially pressure controller for liquefied natural gas cylinder in LNG Liquefied natural gas accumulating field.
Two, background technique: LNG Liquefied natural gas as a kind of clean fuel in field extensive uses such as industry, domestic fuels, at present many do not have the area of natural gas resource all to prepare to utilize LNG Liquefied natural gas to solve industry, domestic fuel problem, because liquefied natural gas (LNG) tank pressure in the loading-unloading vehicle of LNG Liquefied natural gas, storage, application process can constantly change, the pressure control of liquefied natural gas (LNG) tank becomes needs the matter of utmost importance that solves.Step-down control valve, the superpressure control valve of domestic and international existing liquefied natural gas (LNG) tank comprise that its upstream and downstream valve, bypass valve and connecting line thereof, pipe fitting material are 0Cr18Ni9 low temperature stainless steel at present, increase material purchases expense, operating expenses and the difficulty of construction of liquefied natural gas plant, be unfavorable for shortening the procurement cycle of material and the duration of whole engineering.
Three, summary of the invention: the objective of the invention is to overcome the prior art above shortcomings, a kind of middle-size and small-size station pressure controller for liquefied natural gas cylinder is provided.
The object of the present invention is achieved like this, it is to be filled mouth, last topping up, descended topping up, pressure of storage tank table, explosion-proof device, storage tank liquid-level meter, Emergeny Cutoff Valves, storage tank safety valve, atmospheric valve, pressurized machine, boost pressure regulation valve, flashed vapour heater, reduction regulation valve, superpressure atmospheric valve, safety valve to be formed by connecting by liquefied natural gas (LNG) tank, LNG Liquefied natural gas, liquefied natural gas (LNG) tank is the double-level-metal thermally insulated container, outer jar of upper end is provided with explosion-proof device, and interior upper end is installed safety valve and atmospheric valve; The storage tank bottom is installed LNG Liquefied natural gas and is filled mouthful, goes up topping up, topping up, pressure of storage tank table and storage tank liquid-level meter down, and pressurized machine is installed in the liquefied natural gas (LNG) tank bottom, and the boost pressure regulation valve is installed in the downstream of pressurized machine; The flashed vapour heater is the aluminium-made air temp type vaporizer, is installed in the gaseous phase outlet of liquefied natural gas (LNG) tank; The flashed vapour heater is provided with safety valve; Superpressure atmospheric valve, reduction regulation valve are positioned at the downstream of flashed vapour heater, and two valves are arranged in parallel; The outlet of storage tank is provided with Emergeny Cutoff Valves.
When pressure controller for liquefied natural gas cylinder uses, the LNG Liquefied natural gas of uniform temperature, pressure is housed in liquefied natural gas (LNG) tank, filling by LNG Liquefied natural gas of LNG Liquefied natural gas fills mouth, goes up topping up and the realization of following topping up.The pressure of storage tank is controlled automatically by boost pressure regulation valve, reduction regulation valve, superpressure atmospheric valve: the setting pressure of boost pressure regulation valve is lower than the setting pressure of reduction regulation valve, and the setting pressure of reduction regulation valve is lower than the setting pressure of superpressure atmospheric valve.When the pressure of storage tank was lower than the setting pressure of boost pressure regulation valve, the boost pressure regulation valve was opened, and gave the storage tank supercharging by pressurized machine, and when pressure rose to the setting pressure of boost pressure regulation valve, the boost pressure regulation valve cut out, and finished supercharging.When the pressure of storage tank was higher than the setting pressure of reduction regulation valve, the reduction regulation valve was opened, and the gas phase in the storage tank is preferentially used to normal temperature through the flashed vapour heater heats.When the pressure of storage tank was reduced to the setting pressure of reduction regulation valve, the reduction regulation valve cut out, and finished step-down.If the pressure of storage tank continues to raise, when pressure was higher than the setting pressure of superpressure modulating valve, the superpressure modulating valve was opened, and the gas phase in the storage tank, is put to safety vent system or flare system to normal temperature through the flashed vapour heater heats.When pressure was reduced to the setting pressure of superpressure modulating valve, the superpressure modulating valve cut out, and finished step-down.
Compare with similar products at home and abroad, the present invention comprises reduction regulation valve, superpressure atmospheric valve the material of its upstream and downstream valve, bypass valve and connecting line thereof, pipe fitting changes the normal temperature carbon steel into by 0Cr18Ni9 low temperature stainless steel, significantly reduced the consumption of engineering stainless steel pipeline, pipe fitting, engineering cost, operating expenses have been saved, reduce difficulty of construction, shortened the duration.
Four, description of drawings: Fig. 1 is the pressure controller for liquefied natural gas cylinder schematic representation, and among the figure: 1, liquefied natural gas (LNG) tank 2, LNG Liquefied natural gas fill mouth 3, last topping up 4, following topping up 5, pressure of storage tank table 6, explosion-proof device 7, storage tank liquid-level meter 8, Emergeny Cutoff Valves 9, storage tank safety valve 10, atmospheric valve 11, pressurized machine 12, boost pressure regulation valve 13, flashed vapour heater 14, reduction regulation valve 15, superpressure atmospheric valve 16, safety valve.
Five, embodiment: in Fig. 1, it is to be filled mouth 2, last topping up 3, descended topping up 4, pressure of storage tank table 5, explosion-proof device 6, storage tank liquid-level meter 7, Emergeny Cutoff Valves 8, storage tank safety valve 9, atmospheric valve 10, pressurized machine 11, boost pressure regulation valve 12, flashed vapour heater 13, reduction regulation valve 14, superpressure atmospheric valve 15, safety valve 16 to be formed by connecting by liquefied natural gas (LNG) tank 1, LNG Liquefied natural gas, liquefied natural gas (LNG) tank 1 is the double-level-metal thermally insulated container, outer jar of upper end is provided with explosion-proof device 6, and interior upper end is installed safety valve 9 and atmospheric valve 10; Storage tank 1 bottom is installed LNG Liquefied natural gas and is filled mouth 2, last topping up 3, following topping up 4, pressure of storage tank table 5 and storage tank liquid-level meter 7, and pressurized machine 11 is installed in liquefied natural gas (LNG) tank 1 bottom, and boost pressure regulation valve 12 is installed in the downstream of pressurized machine 11; Flashed vapour heater 13 is the aluminium-made air temp type vaporizer, is installed in the gaseous phase outlet of liquefied natural gas (LNG) tank 1; Flashed vapour heater 13 is provided with safety valve 16; Superpressure atmospheric valve 15, reduction regulation valve 14 are positioned at the downstream of flashed vapour heater 13, and two valves are arranged in parallel; The outlet of storage tank 1 is provided with Emergeny Cutoff Valves 8.
In the present invention, the setting pressure of boost pressure regulation valve 12 is lower than the setting pressure of reduction regulation valve 14, the setting pressure of reduction regulation valve 14 is lower than the setting pressure of superpressure atmospheric valve 15, and step-down control valve 14, superpressure control valve 15 comprise that the material of its upstream and downstream valve, bypass valve and connecting line thereof, pipe fitting is the normal temperature carbon steel.
Claims (3)
1, pressure controller for liquefied natural gas cylinder, it is by liquefied natural gas (LNG) tank (1), LNG Liquefied natural gas fills mouthful (2), last topping up (3), following topping up (4), pressure of storage tank table (5), explosion-proof device (6), storage tank liquid-level meter (7), Emergeny Cutoff Valves (8), storage tank safety valve (9), atmospheric valve (10), pressurized machine (11), boost pressure regulation valve (12), flashed vapour heater (13), reduction regulation valve (14), superpressure atmospheric valve (15), safety valve (16) is formed by connecting, it is characterized in that: liquefied natural gas (LNG) tank (1) is the double-level-metal thermally insulated container, outer jar of upper end is provided with explosion-proof device (6), and interior upper end is installed safety valve (9) and atmospheric valve (10); Storage tank (1) bottom is installed LNG Liquefied natural gas and is filled mouthful (2), last topping up (3), following topping up (4), pressure of storage tank table (5) and storage tank liquid-level meter (7), pressurized machine (11) is installed in liquefied natural gas (LNG) tank (1) bottom, and boost pressure regulation valve (12) is installed in the downstream of pressurized machine (11); Flashed vapour heater (13) is the aluminium-made air temp type vaporizer, is installed in the gaseous phase outlet of liquefied natural gas (LNG) tank (1); Flashed vapour heater (13) is provided with safety valve (16); Superpressure atmospheric valve (15), reduction regulation valve (14) are positioned at the downstream of flashed vapour heater (13), and two valves are arranged in parallel; The outlet of storage tank (1) is provided with Emergeny Cutoff Valves (8).
2, according to the described pressure controller for liquefied natural gas cylinder of claim 1, it is characterized in that: the setting pressure of boost pressure regulation valve (12) is lower than the setting pressure of reduction regulation valve (14), and the setting pressure of reduction regulation valve (14) is lower than the setting pressure of superpressure atmospheric valve (15).
3, according to the described pressure controller for liquefied natural gas cylinder of claim 1, it is characterized in that: step-down control valve (14), superpressure control valve (15) comprise that the material of its upstream and downstream valve, bypass valve and connecting line thereof, pipe fitting is the normal temperature carbon steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510018033XA CN100507341C (en) | 2005-09-23 | 2005-09-23 | Pressure control device for liquefied natural gas storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510018033XA CN100507341C (en) | 2005-09-23 | 2005-09-23 | Pressure control device for liquefied natural gas storage tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1752507A true CN1752507A (en) | 2006-03-29 |
| CN100507341C CN100507341C (en) | 2009-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510018033XA Expired - Fee Related CN100507341C (en) | 2005-09-23 | 2005-09-23 | Pressure control device for liquefied natural gas storage tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100507341C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101201159B (en) * | 2006-12-12 | 2010-04-14 | 华效资源有限公司 | Method and system for generating power by waste heat with adjustable flash evaporation system |
| CN102900949A (en) * | 2012-11-11 | 2013-01-30 | 薛宏卫 | Low-temperature liquid storage tank with constant-pressure device |
| CN103411128A (en) * | 2013-03-21 | 2013-11-27 | 宁波明欣化工机械有限责任公司 | Integrated storage tank supercharge and gasification sledge |
| CN105987277A (en) * | 2016-07-07 | 2016-10-05 | 中国人民解放军空军勤务学院 | Small liquid oxygen gas station |
| CN108253294A (en) * | 2017-12-29 | 2018-07-06 | 上海新奥新能源技术有限公司 | A kind of liquefied natural gas supplying system |
| CN108679438A (en) * | 2018-05-22 | 2018-10-19 | 江西制氧机有限公司 | A kind of liquefied natural gas gas-liquid shared system |
| CN111828835A (en) * | 2020-06-22 | 2020-10-27 | 王宝贵 | Method for setting automatic pressure increasing valve of low-temperature liquefied gas storage tank |
| CN111853536A (en) * | 2020-07-28 | 2020-10-30 | 上海交通大学 | Adsorption type self-pressurization and flash gas recovery integrated device for liquefied natural gas storage tank |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3465955B2 (en) * | 1993-05-11 | 2003-11-10 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Core for transformer or inductor |
| NO20023077A (en) * | 2002-06-25 | 2003-05-26 | Statoil Asa | Fluid storage tank and method of constructing such tanks |
| JP2005133785A (en) * | 2003-10-29 | 2005-05-26 | Ishikawajima Harima Heavy Ind Co Ltd | Supplying device |
-
2005
- 2005-09-23 CN CNB200510018033XA patent/CN100507341C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101201159B (en) * | 2006-12-12 | 2010-04-14 | 华效资源有限公司 | Method and system for generating power by waste heat with adjustable flash evaporation system |
| CN102900949A (en) * | 2012-11-11 | 2013-01-30 | 薛宏卫 | Low-temperature liquid storage tank with constant-pressure device |
| CN103411128A (en) * | 2013-03-21 | 2013-11-27 | 宁波明欣化工机械有限责任公司 | Integrated storage tank supercharge and gasification sledge |
| CN103411128B (en) * | 2013-03-21 | 2015-03-11 | 宁波明欣化工机械有限责任公司 | Integrated storage tank supercharge and gasification sledge |
| CN105987277A (en) * | 2016-07-07 | 2016-10-05 | 中国人民解放军空军勤务学院 | Small liquid oxygen gas station |
| CN108253294A (en) * | 2017-12-29 | 2018-07-06 | 上海新奥新能源技术有限公司 | A kind of liquefied natural gas supplying system |
| CN108679438A (en) * | 2018-05-22 | 2018-10-19 | 江西制氧机有限公司 | A kind of liquefied natural gas gas-liquid shared system |
| CN111828835A (en) * | 2020-06-22 | 2020-10-27 | 王宝贵 | Method for setting automatic pressure increasing valve of low-temperature liquefied gas storage tank |
| CN111853536A (en) * | 2020-07-28 | 2020-10-30 | 上海交通大学 | Adsorption type self-pressurization and flash gas recovery integrated device for liquefied natural gas storage tank |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100507341C (en) | 2009-07-01 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20090701 Termination date: 20160923 |