CN108591820A - A method of prevent LNG filling machines from stealing gas by pressure sensor - Google Patents
A method of prevent LNG filling machines from stealing gas by pressure sensor Download PDFInfo
- Publication number
- CN108591820A CN108591820A CN201810396776.8A CN201810396776A CN108591820A CN 108591820 A CN108591820 A CN 108591820A CN 201810396776 A CN201810396776 A CN 201810396776A CN 108591820 A CN108591820 A CN 108591820A
- Authority
- CN
- China
- Prior art keywords
- lng
- circulation
- pressure
- filling machines
- pressure sensor
- 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.)
- Pending
Links
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
- F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
-
- 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
- F17C2250/06—Controlling or regulating of parameters as output values
- F17C2250/0605—Parameters
- F17C2250/0626—Pressure
-
- 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
- F17C2250/07—Actions triggered by measured parameters
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Preventing the method that LNG filling machines steal gas by pressure sensor the present invention provides a kind of, for LNG filling machines carry out systemic circulation precooling process in check tolerance whether in circulation loop normal circulation, the specific method is as follows：Detect pressure F1 at circulation loop inlet；Detect the pressure F2 after liquid feeding rifle in circulation loop；Calculate the difference △ F of F1 and F2；△ F make comparisons with the difference F3 both in the case of normal circulation；If △ F are more than F3, LNG aeratings cycle is out of service, if △ F are not more than F3, LNG aeratings cycle continues to run with.The present invention can judge whether exception occur in circuit by the pressure measurement in tolerance circuit, if be in the presence of that aerating pipette tips cause LNG stream to lose because being inserted into vehicle-mounted bottle.
Description
Technical field
The present invention relates to LNG filling machine technical fields, and in particular to one kind prevents LNG filling machines from stealing by pressure sensor
The method of gas.
Background technology
Common LNG filling machine technological designs currently on the market, when carrying out systemic circulation precooling process, if grasped in violation of rules and regulations
Make, aerating pipette tips are inserted into vehicle-mounted bottle, carry out systemic circulation precooling operation, will result in precooling process tolerance and flow into vehicle-mounted bottle, and
Storage tank is not flowed into, LNG liquid loss is caused, seriously affects gas station owner's economic well-being of workers and staff.
Invention content
The purpose of the present invention overcomes the deficiencies of the prior art and provide one kind prevents LNG filling machines from stealing by pressure sensor
The method of gas can judge whether exception occur in circuit by the pressure measurement in tolerance circuit, if aerating pipette tips occur
The situation for causing LNG stream to lose because being inserted into vehicle-mounted bottle.
The purpose of the present invention is what is reached by following technical measures：
A method of it prevents LNG filling machines from stealing gas by pressure sensor, systemic circulation precooling is carried out for LNG filling machines
In the process check tolerance whether in circulation loop normal circulation,
Detect pressure F1 at circulation loop inlet；
Detect the pressure F2 after liquid feeding rifle in circulation loop；
Calculate the difference △ F of F1 and F2；
△ F make comparisons with the difference F3 both in the case of normal circulation；
If △ F are more than F3, LNG aeratings cycle is out of service, if △ F are not more than F3, LNG aeratings are recycled after reforwarding
Row.
Further, check valve is equipped in circulation loop after liquid feeding rifle, pressure value F2 is surveyed between liquid feeding rifle and check valve
It is fixed.
Compared with prior art, the beneficial effects of the invention are as follows：
Can judge whether exception occur in circuit by the pressure measurement in tolerance circuit, if occur aerating pipette tips because
The situation be inserted into vehicle-mounted bottle and LNG stream is caused to lose.
It is compared by the pressure value of different places in measuring loop, automatic alarm may be implemented, can be reduced artificial
Economic loss caused by mistake.
It elaborates with reference to the accompanying drawings and detailed description to the present invention.
Description of the drawings
Fig. 1 is the structural schematic diagram of normal circulation access in the present invention.
Fig. 2 is the structural schematic diagram of abnormal circulation path in the present invention.
Fig. 3 is the flow diagram whether pressure measurement circuit of the present invention breaks down.
Wherein, 1, inlet, 2, flowmeter, 3, pressure sensor I, 4, charging valve, 5, liquid feeding rifle, 6, pressure sensor
II, 7, check valve, 8, liquid return hole, 9, gun platform, 10, vehicle-mounted bottle.
Specific implementation mode
As shown in Figures 1 to 3, a method of prevent LNG filling machines from stealing gas by pressure sensor, be used for LNG filling machines
Carry out systemic circulation precooling process in check tolerance whether in circulation loop normal circulation,
Detect pressure F1 at circulation loop inlet 1；
Detect the pressure F2 after liquid feeding rifle 5 and liquid feeding rifle 5 between check valve 7 in circulation loop；
Calculate the difference △ F of F1 and F2；
△ F make comparisons with the difference F3 both in the case of normal circulation；
If △ F are more than F3, LNG aeratings cycle is out of service, if △ F are not more than F3, LNG aeratings are recycled after reforwarding
Row.
LNG stream is pre-chilled to as shown in Figure 1 in systemic circulation.The key of the present invention is by liquid return hole gun platform 9 and check valve
Between 8, increases by one pressure sensor II 6 of installation, detect pipeline pressure herein.
When systemic circulation is pre-chilled, LNG liquid flows through：I 3-charging valve of inlet 1-flowmeter, 2-pressure sensor 4-
Liquid outlet-hose-7-liquid return hole of liquid feeding rifle 5-pressure sensor 2-- check valves 8, the reading that pressure sensor I 3 detects are
F1, the pressure value that pressure sensor II 6 is read is the difference △ F=F1-F2 of F2, F1 and F2, if △ F are less than the pressure loss
Value F3 then judges that liquid return hole 8 has liquid to flow through, and system is normal precooling.
If this process, liquid feeding rifle 5 is not inserted on gun platform 9, but is directly inserted on vehicle-mounted bottle 10, LNG stream warp：Into
Liquid mouth 1-flowmeter, 2-pressure sensor, 1-charging valve, 4-liquid outlet-hose-liquid feeding 5-vehicle-mounted bottle of rifle, LNG are not passed through
Sensor II is crossed, the reading F2 of pressure sensor II 6 will be abnormal, then △ F=F1-F2 will be more than F3, filling machine can be stood
Shut down precooling operation.
Claims (2)
1. a kind of preventing the method that LNG filling machines steal gas by pressure sensor, it is precooled to carry out systemic circulation for LNG filling machines
In journey check tolerance whether in circulation loop normal circulation, it is characterised in that：
Detect pressure F1 at circulation loop inlet；
Detect the pressure F2 after liquid feeding rifle in circulation loop；
Calculate the difference △ F of F1 and F2；
△ F make comparisons with the difference F3 both in the case of normal circulation；
If △ F are more than F3, LNG aeratings cycle is out of service, if △ F are not more than F3, LNG aeratings cycle continues to run with.
A kind of prevent the method that LNG filling machines steal gas, feature from existing by pressure sensor 2. according to claim 1
In：Check valve is equipped in circulation loop after liquid feeding rifle, pressure value F2 is measured between liquid feeding rifle and check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810396776.8A CN108591820A (en) | 2018-04-28 | 2018-04-28 | A method of prevent LNG filling machines from stealing gas by pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810396776.8A CN108591820A (en) | 2018-04-28 | 2018-04-28 | A method of prevent LNG filling machines from stealing gas by pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108591820A true CN108591820A (en) | 2018-09-28 |
Family
ID=63611008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810396776.8A Pending CN108591820A (en) | 2018-04-28 | 2018-04-28 | A method of prevent LNG filling machines from stealing gas by pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108591820A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111947025A (en) * | 2020-09-10 | 2020-11-17 | 重庆耐德能源装备集成有限公司 | Device for preventing precooling and gas stealing of LNG (liquefied Natural gas) dispenser, dispenser and method |
| US11692672B2 (en) | 2020-12-17 | 2023-07-04 | Lockheed Martin Corporation | Pressure relief shipping adapter for a bottle head assembly |
| US11867591B2 (en) | 2020-11-12 | 2024-01-09 | Lockheed Martin Corporation | Backup oxygen supply bottle pressure measurement and leak test tool |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3414155B2 (en) * | 1996-09-24 | 2003-06-09 | 豊田工機株式会社 | Leak tester and leak test method |
| CN101058400A (en) * | 2006-04-21 | 2007-10-24 | 中国国际海运集装箱(集团)股份有限公司 | Liquefied natural gas aerating machine and aerating method |
| CN101454652A (en) * | 2006-05-24 | 2009-06-10 | 株式会社科思莫计器 | Leak inspection method and leak inspector |
| CN103629525A (en) * | 2013-12-03 | 2014-03-12 | 重庆耐德能源装备集成有限公司 | Intelligent high-precision LNG filling metering device |
| CN204592879U (en) * | 2015-01-14 | 2015-08-26 | 肇庆新奥燃气有限公司 | A kind of automobile-used filling machine of anti-leak |
| CN106051453A (en) * | 2016-07-26 | 2016-10-26 | 郑州朗润智能装备股份有限公司 | Splashing preventing device of liquefied natural gas (LNG) filling machine |
| CN106195630A (en) * | 2016-08-30 | 2016-12-07 | 成都安迪生测量有限公司 | A kind of intelligence filling gun |
-
2018
- 2018-04-28 CN CN201810396776.8A patent/CN108591820A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3414155B2 (en) * | 1996-09-24 | 2003-06-09 | 豊田工機株式会社 | Leak tester and leak test method |
| CN101058400A (en) * | 2006-04-21 | 2007-10-24 | 中国国际海运集装箱(集团)股份有限公司 | Liquefied natural gas aerating machine and aerating method |
| CN101454652A (en) * | 2006-05-24 | 2009-06-10 | 株式会社科思莫计器 | Leak inspection method and leak inspector |
| CN103629525A (en) * | 2013-12-03 | 2014-03-12 | 重庆耐德能源装备集成有限公司 | Intelligent high-precision LNG filling metering device |
| CN204592879U (en) * | 2015-01-14 | 2015-08-26 | 肇庆新奥燃气有限公司 | A kind of automobile-used filling machine of anti-leak |
| CN106051453A (en) * | 2016-07-26 | 2016-10-26 | 郑州朗润智能装备股份有限公司 | Splashing preventing device of liquefied natural gas (LNG) filling machine |
| CN106195630A (en) * | 2016-08-30 | 2016-12-07 | 成都安迪生测量有限公司 | A kind of intelligence filling gun |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111947025A (en) * | 2020-09-10 | 2020-11-17 | 重庆耐德能源装备集成有限公司 | Device for preventing precooling and gas stealing of LNG (liquefied Natural gas) dispenser, dispenser and method |
| US11867591B2 (en) | 2020-11-12 | 2024-01-09 | Lockheed Martin Corporation | Backup oxygen supply bottle pressure measurement and leak test tool |
| US11692672B2 (en) | 2020-12-17 | 2023-07-04 | Lockheed Martin Corporation | Pressure relief shipping adapter for a bottle head assembly |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180928 |
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| RJ01 | Rejection of invention patent application after publication |