CN104297006B - LNG leakage water curtain restraint experiment device - Google Patents
LNG leakage water curtain restraint experiment device Download PDFInfo
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- CN104297006B CN104297006B CN201410498688.0A CN201410498688A CN104297006B CN 104297006 B CN104297006 B CN 104297006B CN 201410498688 A CN201410498688 A CN 201410498688A CN 104297006 B CN104297006 B CN 104297006B
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Abstract
The invention relates to an LNG leakage water curtain restraint experiment device. The LNG leakage water curtain restraint experiment device mainly solves the problem that an LNG leakage water curtain restraint experiment device is not available yet in the prior art. The LNG leakage water curtain restraint experiment device comprises a discharging system, a water curtain system, a data acquisition system and a control system, wherein the discharging system comprises an LNG storage tank, an LNG discharging tank, an inert gas cylinder and a discharging spray head, the water curtain system comprises a water inlet pipeline and a water curtain nozzle, and the data acquisition system comprises a signal processor, a thermocouple, a methane concentration detector, an anemometer, a hygrometer and a high-speed camera. By the adoption of the LNG leakage water curtain restraint experiment device, the problem that LNG leakage water curtain restraint experiment device is not available yet in the prior art is well solved. The LNG leakage water curtain restraint experiment device can be applied to an LNG leakage water curtain restraint experiment.
Description
Technical field
The present invention relates to a kind of LNG leaks water curtain Inhibition test device.
Background technology
Liquefied natural gas (LNG) obtains in recent years extensive as a kind of cleaning, the efficient energy in industrial and civilian
Using becoming and increase one of most swift and violent energy.LNG has ultralow temperature and the hazard property such as inflammable and explosive, once leak,
Low temperature LNG steams will spread along earth's surface, as run into incendiary source if may initiation fire blast etc. catastrophic effect.How to suppress
LNG Release and dispersion coverages, reduce its hazard analysis and HACCP, so as to realize the control to its Release and dispersion risk,
Become one of key issue of guarantee LNG safety.
At present water curtain is to process LNG to leak most economical, maximally effective technology.The U of CN 203202588 are related to a kind of LNG grooves
Car storage tank drenching installation, including LNG storage tank, detector and drenching installation.Can when detecting LNG and leaking, and
When spray water curtain.Drenching installation provides electric power by solar electric power supply system.After LNG leakages, can be dropped by spraying water curtain
The volumetric concentration of low LNG steam, makes LNG concentration less than its LEL, reduces the generation of blast accident.
After water curtain is ejected on LNG, the mixed process of water curtain and LNG, the dilution situation of LNG, heat water droplet and LNG it
Between energy transfer and the vaporescence of LNG have critically important impact to the action effect of water curtain, but at present for water curtain
Control and water curtain there is no final conclusion with the LNG mechanisms of action, clearly not recognize for how to design a water curtain system.Therefore structure
Build an experiment porch and experimental technique that can simulate LNG leakage water curtain process of inhibition to be particularly important.
The content of the invention
The technical problem to be solved is that prior art there is no LNG to leak the problem of water curtain Inhibition test device,
A kind of new LNG leakage water curtain Inhibition test devices are provided.The device is used in LNG leakage water curtain Inhibition tests, with can be remote
Process control, automatic data collection, experimental period is short, assay reproducibility is high, expense is low, safe advantage.
To solve the above problems, the technical solution used in the present invention is as follows：A kind of LNG leaks water curtain Inhibition test device,
Including bleed-off system, water curtain system, data collecting system and control system, the bleed-off system includes that LNG storage tank, LNG are released
Tank, noble gases gas cylinder, shower nozzle of releasing, the water curtain system includes water inlet pipe line, water spray nozzle, the data collecting system
Including signal processor, thermocouple, methane concentration detector, anemobiagraph, drimeter, high-speed camera；LNG storage tank passes through pipeline
It is connected with LNG tanks of releasing, LNG tanks of releasing are connected by pipeline of releasing with shower nozzle of releasing, and water inlet pipe line one end is provided with water curtain spray
Mouth, is provided with monitoring lattice array in water curtain region, the monitoring point is connected by data wire with data collecting system, data acquisition system
System is connected by data wire with control system.
In above-mentioned technical proposal, it is preferable that the noble gases are nitrogen, are connected with LNG tanks of releasing.
In above-mentioned technical proposal, it is preferable that the water spray nozzle is detachable.
In above-mentioned technical proposal, it is preferable that described to release shower nozzle and LNG releasing divider wall of be provided between tank.
In above-mentioned technical proposal, it is preferable that the LNG storage tank, LNG to release and be equipped with relief valve, pressure gauge, temperature on tank
Meter, liquidometer.
In above-mentioned technical proposal, it is preferable that described to release pipeline and water inlet pipe line is provided with pressure gauge, effusion meter.
In above-mentioned technical proposal, it is preferable that the monitoring lattice array is by a series of prison for being distributed in LNG bleed outlets downstream
Measuring point is constituted, and thermocouple, methane concentration detector, drimeter, the detection of each monitoring point are arranged simultaneously on each monitoring point
Signal is pooled to signal processor and carries out the record of data and preserve, and is connected to control terminal, and each monitoring point thing is shown in real time
The change of reason parameter.
In above-mentioned technical proposal, it is preferable that the control system includes control valve, display instrument, display instrument and control
System processed, the supplemental characteristic that the transmission of display instrument displaying data in real-time acquisition system comes.
LNG according to the present invention leaks water curtain Inhibition test device, the remotely control that achievable LNG releases, it is to avoid LNG is low
Temperature injury, detachable drencher and water curtain flow control system, in that context it may be convenient to carry out the water curtain suppression of different shape
System experiment, it is easy to operate；By data collecting system, experimental data can be recorded with remote auto and record experiment video image money
Material, it is convenient and swift；The analog platform has that experimental period is short, assay reproducibility is high, the low feature of expense, and has strict
Detection and control system ensure the safety of experimentation, achieve preferable technique effect.
Description of the drawings
Fig. 1 is the structural representation of device of the present invention.
In Fig. 1,1 is LNG storage tank；2 release tank for LNG；3 is gas cylinder；4 are shower nozzle of releasing；5 is LNG storage tank pressure gauge；6
For LNG storage tank thermometer；7 is LNG storage tank liquidometer；8 is LNG relief valve；9 is LNG storage tank outlet valve；10 go out for LNG storage tank
Mouth pipeline；11 are pressure tank table of releasing；12 are tank thermometer of releasing；13 are tank liquidometer of releasing；14 are tank relief valve of releasing；15
For N2Outlet valve；16 is N2Cylinder pressure gauge；17 is N2Outlet line；18 are tank outlet valve of releasing；19 release pipeline pressure for LNG
Power table；20 is effusion meter；21 are tank outlet line of releasing；22 release control valve for LNG；23 is water inlet pipe line；24 is into water
Line pressure table；25 is effusion meter；26 is that shield outlet controls valve；27 is water spray nozzle；28 is water curtain；29 is divider wall；30
To monitor lattice array；31 is signal processor；32 is anemobiagraph；33 is high-speed camera；34 is barometer；35 is whole for control
End.
Below by embodiment, the invention will be further elaborated, but is not limited only to the present embodiment.
Specific embodiment
【Embodiment 1】
LNG leakage water curtain Inhibition test devices as shown in Figure 1, including bleed-off system, water curtain system, data collecting system
And control system.Described bleed-off system includes that LNG storage tank, LNG release tank, N2Gas cylinder, shower nozzle of releasing；Described water curtain system
Including water inlet pipe line, detachable water spray nozzle；Described data collecting system includes that thermocouple, methane concentration are detected
Instrument, anemobiagraph, drimeter, high-speed camera；Described control system is including display instruments such as temperature, pressure, liquid levels and respectively
Class control valve, all kinds of display instruments.
LNG is stored in the LNG storage tank of insulated cryogen, pressure gauge, thermocouple, liquidometer is housed, for monitoring on storage tank
The state of LNG storage tank；LNG releases tank for storing the LNG that single experiment is used, and pressure gauge, thermocouple, liquid are housed on storage tank
Position meter, for monitoring the state of LNG storage tank；N2Gas cylinder stores N2, equipped with control valve and pressure gauge on gas cylinder；Before the experiment,
A certain amount of LNG needed for experiment is introduced into tank of releasing from LNG storage tank；Carrying out releasing in experimentation, by controlling N2Gas
The outlet valve of bottle keeps the pressure released in tank constant, the outlet valve control LNG amounts of releasing of tank of being released by control；Release out
LNG is connected to shower nozzle of releasing by pipeline, shower nozzle of releasing be detachable equipment, can according to experiment demand select different shape,
The bleed outlet in aperture.
Water required for manufacture water curtain is introduced by water inlet pipe line, is used equipped with pressure gauge, effusion meter, outlet valve on water pipe
To control the water yield；Introduce water pipe to be connected with drencher, drencher is detachable equipment, can be selected according to experiment demand
Different shape, the shower nozzle in aperture, can manufacture different shape, size, discharge water curtain.
In some monitoring points of bleed outlet arranged downstream, on each point thermocouple, methane concentration analyser, drimeter are laid
And be connected with data acquisition unit；High-speed camera, pressure gauge, anemobiagraph record collection experiment image data and meteorology are arranged simultaneously
Data.
Described control system includes display instrument and all kinds of control valves such as temperature, pressure, liquid level, all kinds of display instruments
Device is arranged in corresponding storage tank and attached pipeline, and control valve is arranged on the turnover pipeline of corresponding storage tank；LNG storage tank, LNG
Tank of releasing is placed in the side of divider wall, and LNG export pipelines connect shower nozzle of releasing through divider wall；Water curtain system and data acquisition system
System is placed in the opposite side of divider wall；Described data collecting system is connected with control system, and by the data signal for collecting
It is aggregated into control system terminal to be processed.
The experimentation summary of LNG leak suppressing experiment porch：
(1) preparing experiment
(1) experimental facilitiess inspection：The integrity and sealing of storage tank and pipeline are checked, whether check valve can be just normally opened
Close, check can whether safety protection equipment and fire-fighting equipment be complete, normally run.
(2) tank states detection：The LNG states stored in LNG storage tank are detected by pressure gauge, thermometer, liquidometer.
(2) LNG bleed-off systems are started
(1) pre-cooling of storage tank：Open control valve 9 a small amount of LNG in LNG storage tank 1 is imported into LNG and release tank 2, open tank of releasing
Outlet valve 18 and LNG release and control valve 22, make LNG that heat absorption is vaporized in release tank and pipeline, are released by the monitoring of thermometer 12
Temperature in tank, temperature is reached in storage tank till LNG temperature in tank of releasing, and tank outlet valve 18 is released in closing and LNG releases
Control valve 22.
(2) LNG is imported：Open control valve 9 LNG in LNG storage tank 1 is imported into LNG and release tank 2, monitoring LNG releases tank 2
On liquidometer 13, when the amount of LNG reach experiment needed for amount when, closing control valve 9.
(3) N is started2Pressure-retaining system：Open N2Cylinder outlet valve 15, observes pressure gauge 11, makes tank holding pressure perseverance of releasing
It is fixed.
(4) LNG releases：Open LNG bleeder valves 18 to release LNG, open bleeder valve 22, monitor effusion meter 20 and control
The LNG amounts of releasing, LNG is sprayed by shower nozzle 4 of releasing.Monitor in real time LNG storage tank pressure gauge 5, LNG storage tank thermometer during releasing
6th, LNG storage tank liquidometer 7, pressure tank table 11 of releasing, tank thermometer 12 of releasing, tank liquidometer 13, N of releasing2Cylinder pressure gauge 16,
LNG releases line pressure table 19, effusion meter 20, the oral siphon line pressure table 24, numerical value of effusion meter 25, it is ensured that parameters are just
In normal scope.
(3) log-on data acquisition system
LNG is imported after tank of releasing, log-on data acquisition system, monitoring lattice array 30, anemobiagraph 32, high-speed camera
33rd, barometer 34 proceeds by data acquisition and photologging, and the detection signal of each monitoring point is pooled to signal processor 31
Carry out the record of data and preserve, and be connected to control terminal 35, the change of each monitoring point physical parameter is shown in real time.
(4) water curtain system is started
After the data for monitoring the collection of lattice array 30 reach stable, shield outlet control valve 26 is opened, monitor effusion meter 25
And the water amount of releasing is controlled, water sprays and is formed water curtain by water spray nozzle 27.The ginseng of monitor in real time effusion meter 25 and pressure gauge 24
Number change, makes effusion meter and manometric parameter keep stable.
(5) ending phase is tested
(1) open after water curtain system, after the data of monitoring point array acquisition reach again to be stablized, tank of releasing is closed successively
Outlet valve 18, LNG is released and controls valve 22, closes bleed-off system.
(2) shield outlet control valve 26 is closed, water curtain system is closed.
(3) data collecting system is closed, preserves experimental data.
(4) LNG is released remaining LNG emptyings, checking experiment device and each valve situation in tank and its attached pipeline,
Arrange experimental apparatus.
Claims (1)
1. a kind of LNG leaks water curtain Inhibition test device, including bleed-off system, water curtain system, data collecting system and control system
System, the bleed-off system includes that LNG storage tank, LNG release tank, noble gases gas cylinder, shower nozzle of releasing, and the water curtain system includes water
Intake pipeline, water spray nozzle, the data collecting system includes signal processor, thermocouple, methane concentration detector, wind speed
Instrument, drimeter, high-speed camera；LNG storage tank is connected by pipeline and LNG tank of releasing, LNG release tank by release pipeline with let out
Blowout nozzle is connected, and water inlet pipe line one end is provided with water spray nozzle, and monitoring lattice array is provided with water curtain region, and the monitoring point passes through
Data wire is connected with data collecting system, and data collecting system is connected by data wire with control system；The monitoring lattice array
It is made up of a series of monitoring point for being distributed in LNG bleed outlets downstream, arranges thermocouple, methane simultaneously on each monitoring point dense
Degree detector, drimeter, the detection signal of each monitoring point is pooled to signal processor to carry out the record of data and preserves, and even
Control terminal is connected to, the change of each monitoring point physical parameter is shown in real time；The noble gases are nitrogen, are released tank phase with LNG
Even；The water spray nozzle is detachable；It is described to release shower nozzle and LNG releasing divider wall of be provided between tank；The LNG storage tank,
LNG to release and be equipped with relief valve, pressure gauge, thermometer, liquidometer on tank；It is described to release pipeline and water inlet pipe line is provided with pressure
Power table, effusion meter；The control system includes control valve, display instrument, and display instrument displaying data in real-time acquisition system is passed
Defeated next supplemental characteristic.
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| CN104776320A (en) * | 2015-03-19 | 2015-07-15 | 中国石油化工股份有限公司 | High-expansion foam automatic generating system for liquefied natural gas station |
| CN104792661B (en) * | 2015-03-19 | 2018-03-23 | 中国石油化工股份有限公司青岛安全工程研究院 | A kind of On Lng Leakage spreads fire integration experimental platform |
| CN105821954A (en) * | 2016-04-07 | 2016-08-03 | 中国寰球工程公司 | LNG accumulated water separation and discharge pool |
| CN108945315B (en) * | 2018-06-15 | 2020-08-07 | 沪东中华造船(集团)有限公司 | L NG ship board side water curtain protection device |
| CN109682726B (en) * | 2019-03-04 | 2024-04-05 | 中国石油大学(华东) | Water curtain LNG vapor diffusion inhibition effect analysis experiment platform |
| CN109916348B (en) * | 2019-03-21 | 2020-08-21 | 广西大学 | Liquid landing horizontal distance S calculation model based on vertical storage tank body leakage port |
| CN110554137A (en) * | 2019-09-27 | 2019-12-10 | 中国石油大学(华东) | experimental device for natural gas long-distance pipeline jet fire research based on put under barrier condition |
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| CN101101085A (en) * | 2007-07-30 | 2008-01-09 | 四川美丰化工股份有限公司 | Liquid ammonia storage tank remote control monitoring and automatic sprinkling system realization method |
| CN103505834A (en) * | 2013-09-30 | 2014-01-15 | 尹维 | Firefighting water fog screen protection system |
| CN103808901B (en) * | 2014-01-22 | 2017-12-29 | 中国人民武装警察部队学院 | ammonia leakage decontamination simulation experiment platform |
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Effective date of registration: 20170413 Address after: Yanan City, Shandong province Qingdao City three road 266071 No. 218 Applicant after: Qingdao Safety Engineering Research Institute of Sinopec Co., Ltd. Applicant after: Sinopec Corp. Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Applicant before: Sinopec Corp. Applicant before: Qingdao Safety Engineering Research Institute of Sinopec Co., Ltd. |
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