CN208222067U - A kind of LNG storage tank peculiar to vessel overcharges early warning system - Google Patents
A kind of LNG storage tank peculiar to vessel overcharges early warning system Download PDFInfo
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- CN208222067U CN208222067U CN201820424821.1U CN201820424821U CN208222067U CN 208222067 U CN208222067 U CN 208222067U CN 201820424821 U CN201820424821 U CN 201820424821U CN 208222067 U CN208222067 U CN 208222067U
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- overflow
- storage tank
- lng
- early warning
- warning system
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Abstract
The utility model discloses the one kind being applied to when LNG storage tank peculiar to vessel fills liquefied natural gas to overcharge early warning system.The early warning system includes overflow passage and instrument supply gas system；The overflow passage includes overflow pipe and the remote-control relief valve being sequentially arranged on overflow pipe, flange port, temperature sensor and the ring pipe of overflow passage end；The instrument supply gas system is connected to by solenoid valve with remote-control relief valve.The flange port is sealed using blind flange, can be opened manually.LNG can be determined when filling overflow by modes such as ring pipe frosting, the outflow of flange port liquid or temperature sensor remote transmissions.Originally it overcharges early warning system and realizes LNG and overcharge long-range control, high liquid level warning, can accomplish unattended fill.Under LNG storage tank exception overcharge conditions, can be discharged by flange port or temperature sensor damage when, openable blind flange judges overflow.
Description
Technical field
The utility model is applied to the storage and transportation field of liquefied natural gas LNG, in particular to when LNG storage tank peculiar to vessel fills LNG
Overcharge early warning system.
Background technique
In recent years, liquefied natural gas LNG is gradually ripe by people as a kind of economic, green, environmental protection, the new energy of safety
Know, become the preferred green energy resource of social recognition, especially LNG is largely able to widely popularize application in public transport field, and
It is promptly promoted to marine fuel market, to meet the market requirement, has developed LNG storage tank peculiar to vessel.
For the safety for guaranteeing low-temperature storage tank, LNG storage tank is usually no more than the 90% of tank capacity when filling LNG.LNG is low
Warm storage tank it is traditional overcharge early warning system, usually in one overflow pipe of storage tank external welding, an overflow is installed on overflow pipe
Shut-off valve when LNG is filled to storage tank, opens overflow valve, and the LNG overcharged is flowed out by overflow pipe, plays and overcharge forewarning function.But
For LNG low-temperature storage tank peculiar to vessel, " gas fuel powered ship specification " requires the pipeline of LNG storage tank that storage tank connection should be arranged in
In place, the LNG liquid that overflow goes out cannot be directly discharged in place, and aboard ship fill needs and charging system gearing, i.e.,
Long-range monitoring, development trend be it is unattended, therefore it is traditional overcharge overflow early warning system, have been unable to meet demand.
Summary of the invention
The technical issues of the utility model solves is: providing one kind and overcharges early warning system, realization can be monitored remotely, can also
Scene judgement and operation.
The technical scheme adopted by the utility model is that:
It includes overflow passage and instrument supply gas system that LNG storage tank peculiar to vessel, which overcharges early warning system,；The overflow passage includes connection
The overflow pipe of storage tank and the remote-control relief valve being successively set on overflow pipe, flange port, temperature sensor, ring pipe, delivery pipe；
The instrument supply gas system is connected to by solenoid valve with remote-control relief valve.The flange port is sealed using blind flange, openable connection
Discharge pipe.
LNG can be by sides such as ring pipe frosting, the outflow of flange port liquid or temperature sensor remote transmissions when filling overflow
Formula determines.
The technological progress that the utility model obtains is: originally overcharging early warning system and realizes LNG and overcharges long-range control, high liquid level
Alarm, can accomplish unattended fill.Under the extremely quick media filling condition of LNG storage tank, removable lower flange lid, connection hose is realized
LNG liquid draws discharge.
Detailed description of the invention
Fig. 1 is utility model diagram；
Wherein: 1- low-temperature storage tank, 2- highest liquid level, 3- instrument supply gas system, 4- solenoid valve, 5- temperature sensor, 6- annular
Pipe, 7- flange port, 8- remote-control relief valve, 9- overflow pipe, 10- flange, 11- delivery pipe.
Specific embodiment
Attached drawing 1 is that LNG storage tank peculiar to vessel overcharges early warning schematic diagram, which includes overflow passage, 3 and of instrument supply gas system
Control system.The overflow passage is located in the connection place of dashed rectangle, overflows including what is be highly arranged by storage tank highest liquid level 2
Flow tube 9 and the remote-control relief valve 8 being successively set on overflow pipe 9, flange port 7, temperature sensor 5 and ring pipe 6 and row
Put pipe 11.The signal of temperature sensor 5 is fed back temperature signal to automatic control system by data line, and flange port 7 is using method
Orchid lid sealing.The instrument supply gas system 3 connects the flange 10 outside place, is connected to by solenoid valve 4 with remote-control relief valve 8.
When work, when low-temperature storage tank 1 fills LNG close to highest liquid level 2, the long-range solenoid valve 4 that controls is opened, instrument supply gas system
Instrument supply gas acts on remote-control relief valve 8 in 3, remote-control relief valve 8 is opened, overflow passage is open-minded.Instrument supply gas ordinary circumstance is got off
It is the gas with pressure from compressed air or the natural gas of low-temperature storage tank 1.Reach when low-temperature storage tank 1 fills LNG
When highest liquid level 2, LNG is flowed out from overflow passage, at this point it is possible to be overcharged by three kinds of modes come early warning judgement: first is that observation
Ring pipe 6 whether frosting.LNG is cryogenic liquid, after overflow passage outflow, by thermal evaporation, a large amount of cooling capacity is released, so that annular
Pipe 6 generates frost.Second is that being automatically controlled using temperature sensor 5.When LNG is flowed out from overflow passage, the temperature of overflow passage
Degree decline, temperature sensor 5 can be by temperature signal teletransmission to control system.Third is that opening the blind flange of flange port 7, work as LNG
When overflowing to the catch tray in gas tank connection place, illustrate that low-temperature storage tank 1 has been filled into highest liquid level 2.
Under normal circumstances, the LNG in overflow passage is after the buffering gasification of ring pipe 6, from concentration discharged to atmosphere,
If LNG is filled too fast or filled excess, the LNG that overflow goes out in overflow passage has little time to vaporize, and can beat the blind flange of flange port 7
It opens, LNG is overflowed in the catch tray in gas tank connection place, or connection discharge pipe, LNG liquid is avoided to be directly discharged to store up
In tank place or on the deck of boat.
Originally it overcharges early warning system LNG is realized by temperature sensor 5, instrument supply gas system 3 and overcharge long-range control, high liquid level
Alarm, can accomplish unattended fill.When Attended mode, under LNG storage tank exception media filling condition, openable flange port 7
Blind flange overflows to LNG in the catch tray in gas tank connection place, or connection discharge pipe, realizes the LNG liquid overcharged not
It is directly discharged in storage tank place or on the deck of boat.
Claims (2)
1. a kind of LNG storage tank peculiar to vessel overcharges early warning system, it is characterised in that: including overflow passage and instrument supply gas system (3)；Institute
Stating overflow passage includes remote-control relief valve (8), the flange for connecting the overflow pipe (9) of storage tank and being successively set on overflow pipe (9)
Mouth (7), temperature sensor (5), ring pipe (6), delivery pipe (11)；The instrument supply gas system (3) passes through solenoid valve (4) and remote control
Overflow valve (8) connection.
2. LNG storage tank peculiar to vessel according to claim 1 overcharges early warning system, it is characterised in that: the flange port (7) is adopted
It is sealed with blind flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820424821.1U CN208222067U (en) | 2018-03-28 | 2018-03-28 | A kind of LNG storage tank peculiar to vessel overcharges early warning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820424821.1U CN208222067U (en) | 2018-03-28 | 2018-03-28 | A kind of LNG storage tank peculiar to vessel overcharges early warning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208222067U true CN208222067U (en) | 2018-12-11 |
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ID=64503338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820424821.1U Active CN208222067U (en) | 2018-03-28 | 2018-03-28 | A kind of LNG storage tank peculiar to vessel overcharges early warning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208222067U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114992508A (en) * | 2022-05-27 | 2022-09-02 | 河南省锅炉压力容器安全检测研究院 | Cryogenic container filling limiting device and using method thereof |
-
2018
- 2018-03-28 CN CN201820424821.1U patent/CN208222067U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114992508A (en) * | 2022-05-27 | 2022-09-02 | 河南省锅炉压力容器安全检测研究院 | Cryogenic container filling limiting device and using method thereof |
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