CN106370453A - Leakage blockage experiment system for LNG (liquefied natural gas)/NG (natural gas) pipeline leakage - Google Patents
Leakage blockage experiment system for LNG (liquefied natural gas)/NG (natural gas) pipeline leakage Download PDFInfo
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- CN106370453A CN106370453A CN201611097514.9A CN201611097514A CN106370453A CN 106370453 A CN106370453 A CN 106370453A CN 201611097514 A CN201611097514 A CN 201611097514A CN 106370453 A CN106370453 A CN 106370453A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
Abstract
The invention discloses a leakage blockage experiment system for LNG (liquefied natural gas)/NG (natural gas) pipeline leakage. The system comprises an LNG Dewar flask, an LN2 Dewar flask, a casing pipe type low-temperature heat exchanger, a pressure water tank with a view window, a leakage module, a temperature sensor, a pressure sensor, a water tank with a temperature control device, a variable speed motor, a turbofan and the like. The leakage work medium temperature can be changed through the casing pipe type low-temperature heat exchanger; the leakage pressure is regulated by regulating the self pressurization valve arranged on the Dewar flask and an adjustable pressure back pressure valve arranged behind the leakage module; the leakage time of the LNG/NG is controlled through an electromagnetic valve; through the water tank with the temperature control device and a water pump, the temperature and the flowing speed of the water entering the pressure water tank with the view window are controlled; by changing the rotating speed of the speed regulating motor, the rotating speed of the turbofan is controlled, so that the influence of the eddy current agitation on the leakage blockage can be simulated; the LNG/NG flowing through a leakage pipeline is received through a low-temperature liquid containing tank and a gas storage tank; the generated waste gas is exhausted into the atmosphere through an exhaust pipeline and an exhaust mask; the safety of experiments is ensured.
Description
Technical field
A kind of a kind of the present invention relates to leaking stoppage experiment system of cryogenic liquid pipeline leakage, more particularly, it relates to lng/
The leaking stoppage experiment system of ng waters and land-based area pipeline leakage.
Background technology
As polluting the minimum energy in fossil energy, calorific value phase should be higher than that coal to natural gas (natural gas, abbreviation ng)
Charcoal and oil, China is just improving proportion in energy consumption structure for the ng energetically.With the increase of transportation range, underwater pipeline with
Lng (liquid natural gas) Shipping amount quickly increases.Rupture when underwater pipeline, lng ship occurs
It is likely to during marine transportation accident or lng stevedoring goods cause lng waters/land-based area leakage, sent out by statistics in the past
Raw lng/ng leakage accident finds, most of leakage accident is that the pipeline being caused due to misoperation or accident is let out
Leakage.And lng/ng pipeline leakage be mainly characterized by the temperature difference larger (more than 175k)；The liquid temperature rise rate leaking out is high, aerogenesis
Amount is big；The gas that produces or the gas that leaks out due to extraneous heat exchange, its variable density is larger；The gas producing has flammable
Property, need especially process etc..
At present, in the design of simulation pipeline leaking stoppage experiment, there is researcher comprehensive analysis ship pipeline leakage form, adopt
With modularity and parallel design method, develop ship pipeline leaking stoppage experiment platform, this platform can carry out multiple ships simultaneously
The leaking stoppage experiment of pipeline leakage fault.Related article includes: Liu Qiao, He Shiping, Guo Wenyong, Wu Xinyue. and ship pipeline leak stopping is real
Test the design [j] of platform. laboratory science, 2012 (6): 179-182..Find no Patents file.
The related experiment systematic research having been found that is concentrated mainly on analysis ship pipeline common leakage form and leak stopping side
Method, in conjunction with the medium (oil, water, steam, gas etc.) in pipeline, pressure condition (pressure sealing, no pressure leak stopping), design pipeline blocks up
Leakage experiment porch, the experiment porch designed can simulate the leakage-stopping situation in land-based area for the water at normal temperature.But due to lng/ng
Low-temperature characteristics and insecurity, and the multiformity of experiment condition can be provided in view of experiment porch, need to experimental system
Carry out related special consideration and design.At present, it is not yet found that for cryogenic liquid/gas under the conditions of waters/land-based area due to
Pipe breakage and the leakage that leads to and leaking stoppage experiment study of platform and exploitation.As carried out leakage-stopping using existing research platform
Experiment is it may appear that some problem below: 1) cannot complete cryogenic liquid/gas leakage control by experiment porch；2) cannot lead to
Cross experiment porch and complete underwater leak stopping operation；3) experiment porch cannot make in the experimental subject with flammable and explosiveness
With.
Content of the invention
For solving the problems referred to above that prior art exists, the present invention will develop one kind and can complete cryogenic liquid/gas and let out
Leakage controls, can complete underwater leak stopping operation, lng/ng water used in having the experimental subject of combustibility and explosiveness
The leaking stoppage experiment system of domain or land-based area pipeline leakage.
A kind of leaking stoppage experiment system of lng/ng pipeline leakage, leaks module, lng/ including control module, lng/ng land-based area
Ng waters leakage module and leak stopping operation module；
The lng that described control module includes depositing leak stopping object lng is certainly pressurized Dewar flask, deposits ln2Ln2From supercharging Du
Watt bottle and shell-and-tube cryogenic heat exchanger, are lng/ng land-based area leakage module and waters leakage module provides temperature and pressure controlled
lng/ng；
Described lng from be pressurized the lng outlet valve of Dewar flask and ng gas outlet valve respectively by gas-liquid change three-way valve a and
Shell-and-tube cryogenic heat exchanger connects, described ln2N from supercharging Dewar flask2Outlet valve/air removing valve is with shell-and-tube cryogenic heat exchanger even
Connect；Described ln2Ln from supercharging Dewar flask2The pre-cooled three-way valve of liquid valve is connected with shell-and-tube cryogenic heat exchanger；
Described shell-and-tube cryogenic heat exchanger connects master through lng/ng Outlet check valves and enters liquid/gas stop valve, described pre-cooling three
Connect master to the pre-cooled check valve of valve and enter liquid/gas stop valve；The other end that described master enters liquid/gas stop valve connects gas-liquid conversion three
To valve b；The another two ends that described gas-liquid changes three-way valve b connect cryogenic liquid effusion meter and cryogenic gas effusion meter respectively；Described
Cryogenic liquid effusion meter connects feed liquor three-way valve through liquid inlet electromagnetic valve；Described cryogenic gas effusion meter through air inlet electromagnetic valve connect into
Gas three-way valve；
Described feed liquor three-way valve is connected with waters leakage unit feed liquor check valve；Described air inlet three-way valve is single with waters leakage
First breather check valve is connected；
Described lng/ng land-based area leakage module includes liquid leakage unit, gas leakage unit, low temperature fluid-containing pot, air accumulator
With aerofluxuss mast.
Described liquid leakage unit two ends connect flanged (FLGD) check valve a and flanged (FLGD) check valve b, described band method respectively
Blue check valve a is connected with feed liquor three-way valve by liquid line, between described flanged (FLGD) check valve a and feed liquor three-way valve
Gas exhaust piping, second temperature sensor t2 and second pressure sensor p2 are connected with liquid line；
Described gas piping is connected to air accumulator through one-way cock a；Low temperature fluid-containing pot is connected to storage through one-way cock d
Gas tank, air accumulator is connected with aerofluxuss mast through exhaust check valve；
Described flanged (FLGD) check valve b is connected to low temperature fluid-containing pot through adjustable pressure counterbalance valve c；
Described gas leakage unit two ends connect flanged (FLGD) check valve e and flanged (FLGD) check valve f, described band method respectively
Blue check valve e is connected with air inlet three-way valve by gas piping, between described flanged (FLGD) check valve e and air inlet three-way valve
Gas exhaust piping, the 4th temperature sensor t4 and the 4th pressure transducer p4 are connected with gas piping；
Described gas exhaust piping is connected to air accumulator through one-way cock c；
Described flanged (FLGD) check valve f is connected to air accumulator through adjustable pressure counterbalance valve d, and is finally discharged into through aerofluxuss mast
In air；
Described lng/ng waters leakage module includes waters leakage unit, the pressure water tank with form, water pump, band temperature control dress
Water tank, low temperature fluid-containing pot, air accumulator and the aerofluxuss mast put.
Gas-liquid mixed pipe is connected between described waters leakage unit feed liquor check valve and waters leakage unit breather check valve
Road, described gas-liquid mixed pipeline is connected to through three-temperature sensor t3, the 3rd pressure transducer p3 and flanged (FLGD) check valve c
Waters leakage unit, described waters leakage unit is connected respectively to pressure-adjustable through flanged (FLGD) check valve d and row's liquid/gas three-way valve
Power counterbalance valve c and adjustable pressure counterbalance valve d；
Described waters leakage unit is arranged in the pressure water tank with form；
Setting the 5th temperature sensor t5, the 5th pressure transducer p5 on the described pressure water tank with form；
Gas-liquid mixed pipeline between described waters leakage unit feed liquor check valve and waters leakage unit breather check valve
It is connected to air accumulator through one-way cock b；
The described pressure water tank with form is connected to air accumulator through adjustable pressure counterbalance valve b；
The water inlet of the described pressure water tank with form is connected with the water tank with temperature regulating device with water pump through water injection valve；
The outlet of the described pressure water tank with form is connected with the water tank with temperature regulating device through adjustable pressure counterbalance valve a；
The described pressure water tank with form is connected with high-pressure nitrogen bottle through charge valve；
Described leak stopping operation module includes push rod machinery, sealing agent storage tank, sealing agent nozzle, turbofan and speed change electricity
Machine；
Described push rod machinery is arranged in the pressure water tank with form, blocks the leak on the leakage unit of waters；
Described turbofan is placed in waters leakage unit leak front end, is connected with variable speed electric motors, particularly；
Described sealing agent nozzle is placed between turbofan and waters leakage unit leak, through sealing agent outlet one-way cock with
Sealing agent storage tank connects.
Preferably, it is connected heat tracing copper pipe between described gas-liquid conversion three-way valve b and cryogenic gas effusion meter.
Preferably, described shell-and-tube cryogenic heat exchanger is provided with for monitoring the working fluid in shell-and-tube cryogenic heat exchanger
Temperature the first temperature sensor t1 and the working fluid pressure first pressure sensor p1, be provided with ln2Outlet valve；Described
Lng is provided with from boost pressure regulation valve a, described ln from being pressurized Dewar flask2It is provided with from boost pressure regulation valve b from supercharging Dewar flask.
Preferably, described air accumulator connects aerofluxuss mast through exhaust check valve.
Preferably, described push rod machinery includes cylinder, push rod, spring to medium-sized solenoid directional control valve and gas cylinder,
Described gas cylinder is connected to medium-sized solenoid directional control valve with spring by trachea, and described spring is to medium-sized solenoid directional control valve and cylinder
Connect, the push rod in cylinder blocks the leak on the leakage unit of waters.
Preferably, the described pressure water tank with form is provided with transparent window, and light transmittance is not less than 92.5%, bearing capacity
Not less than 1mpa.
Preferably, the probe of described 5th temperature sensor t5 is arranged at below the pressure water tank water surface with form, described
The probe of the 5th pressure transducer p5 is arranged at more than the pressure water tank water surface with form.
Preferably, described pipeline is all using cryogenic vacuum double-layer stainless steel pipe.
Preferably, described liquid inlet electromagnetic valve and air inlet electromagnetic valve are all from intrinsic safety low-temperature solenoid valve.
The operation principle of each module of the present invention and device is as follows:
Control module leaks module for lng/ng land-based area and lng/ng waters leakage module provides temperature and pressure controlled
Lng/ng, for simulating lng/ng land-based area and waters leakage process, completes leak stopping operation through leak stopping module, and compares leak stopping to complete
Effect.
Lng/ng is spilt by lng/ng land-based area leakage module from described liquid leakage unit and gas leakage unit, and discharges
To in atmospheric environment, realize the leakage simulation of land-based area environment.The lng/ flowing through from described liquid leakage unit and gas leakage unit
Ng flows into described low temperature fluid-containing pot and air accumulator, and finally discharges from aerofluxuss mast in gaseous form；
Lng/ng is discharged into the described press water with form through described waters leakage unit by lng/ng waters leakage module
In case, the current in the pressure water tank with form and water temperature are provided by described water pump and the water tank with temperature regulating device, to realize
The leakage simulation of lng/ng waters.The lng/ng flowing through from described waters leakage unit flows into described low temperature fluid-containing pot and air accumulator,
And finally discharge from aerofluxuss mast in gaseous form；
Leak stopping operation module realizes the leak stopping operation of lng/ng waters leakage.
Certainly it is pressurized Dewar flask and ln with lng2The shell-and-tube cryogenic heat exchanger connecting from supercharging Dewar flask, in shell-and-tube low temperature
In heat exchanger, by controlling the ln injecting2To adjust the temperature of the working fluid lng/ng；
It is arranged at the first temperature sensor t1 in shell-and-tube cryogenic heat exchanger and first pressure sensor p1, for monitoring
The temperature and pressure of the working fluid lng/ng in shell-and-tube cryogenic heat exchanger；
The cryogenic liquid effusion meter being connected with shell-and-tube cryogenic heat exchanger and cryogenic gas effusion meter, for monitoring experiment work
The flow of matter；
The liquid inlet electromagnetic valve being connected with cryogenic liquid effusion meter and the air inlet electromagnetic valve being connected with cryogenic gas effusion meter, are used
It is passed through the opening and closing time of the working fluid in control；
Water tank with temperature regulating device passes through water pump toward the controlled water of the infeed temperature of the pressure water tank with form and flow；
Adjustable pressure counterbalance valve c and adjustable pressure counterbalance valve d is respectively intended to adjust liquid leakage unit and gas leakage is single
The discharge pressure of unit, the change realizing leakage experiment power pressure is adjusted；
The liquid leakage unit being conveniently replaceable being connected with liquid inlet electromagnetic valve and air inlet electromagnetic valve and gas leakage unit, are used
In simulation lng pipeline leakage and ng pipeline leakage；
Liquid leakage unit and gas leakage unit, realize changing behaviour by being connected to flanged (FLGD) check valve at its two ends
Make and direction controlling；
Low temperature fluid-containing pot is used for receiving the lng cryogenic liquid flowing through from liquid leakage unit, and low temperature fluid-containing pot passes through unidirectional
Plug valve d is connected with air accumulator, discharges the ng gas of evaporation from low temperature fluid-containing pot, eliminates hypertonia and fuel gas in reality
Test the threat of region clustering；
Air accumulator is used for receiving the gas working medium flowing through from gas leakage unit, exhaust pipe and low temperature fluid-containing pot, gas storage
Tank is connected with aerofluxuss mast by exhaust check valve, eliminates the threat that hypertonia and fuel gas are assembled in Experimental Area；
Pressure water tank with form provides lng/ng waters leakage space, is provided with transparent window, for for shooting
Leakage process and Process of Leaking Stoppage provide visualization window；
5th temperature sensor t5 and the 5th pressure transducer p5 is used for water temperature change in the pressure water tank with form for the monitoring；
Push rod machinery is used for waters leakage unit being carried out open and close operation；
Waters leakage unit can be passed through lng liquid it is also possible to be passed through ng gas, completes the tunnelling ray of waters difference working medium
Intend；
For injecting the nozzle of sealing agent, just to leaking module under water, it is placed in the waters with the pressure water tank of form；
The sealing agent storage tank that is connected with sealing agent nozzle it is provided that the sealing agent of pressure adjustable, is used for carrying out waters blocking up
Leakage operation；
Turbofan can change local current eddy flow state, is connected with adjustable speed motor, and after being placed in sealing agent nozzle, simulation is stifled
The leakage impact to plugging effect for the environmental change.
Implement the leaking stoppage experiment system of the lng/ng pipeline leakage of the present invention, have the advantages that
1st, the experimental system of the present invention is passed through to design shell-tube type cryogenic heat exchanger change leakage Temperature of Working, adjusts Dewar flask
On from pressure charging valve and leakage module after adjustable pressure counterbalance valve change leak pressure, using liquid inlet electromagnetic valve and air inlet electromagnetism
Valve controls the leak time of lng/ng, using liquid line, gas piping, gas-liquid mixed pipeline, cryogenic liquid effusion meter, gas
Effusion meter and other related valve members are realized cryogenic liquid/gas piping connection, flow measurement and flow direction and are controlled with opening and closing, gram
Take the defect that existing experimental system can not complete cryogenic liquid/gas leakage control.
2nd, the present invention using the water tank with temperature regulating device and water pump, the water of certain flow rate and water temperature is sent to form
In pressure water tank, and waters leakage unit is fitted into, is inflated in the pressure water tank with form using high-pressure nitrogen bottle, change
The operating pressure becoming water tank, to simulate different water depth operating mode, realizes the leakage simulation of lng/ng waters；By being arranged on pressure water tank
In push rod machinery complete waters leakage keying operation；By sealing agent nozzle to the leak position on the leakage unit of waters
Put spray sealing agent；The rotating speed of control break buncher, thus changing turbofan rotating speed, to simulate vortex stirring to plugging effect
Impact.Overcome the defect that existing experimental system can not complete waters leakage and leaking stoppage experiment operation.
3rd, the present invention receives, by low temperature fluid-containing pot, the liquid working substance flowing through from liquid leakage unit, is received using air accumulator
The gas working medium flowing through from gas leakage unit, exhaust pipe and low temperature fluid-containing pot, the gas being pooled in air accumulator finally leads to
Cross aerofluxuss mast and be discharged in air it is ensured that the safety of experiment.Overcome existing experiment porch and cannot be used for flammable, explosive working medium
Defect.
Brief description
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the push rod mechanical device structure schematic diagram of the present invention.
In figure: 1-lng is pressurized Dewar flask certainly；2-ln2From supercharging Dewar flask；3-lng outlet valve；4- is from boost pressure regulation valve a；
5-ng outlet valve；6-n2Outlet valve/air removing valve；7-ln2Liquid valve；8- is from boost pressure regulation valve b；9- gas-liquid changes three-way valve a；10-
Pre-cooling three-way valve；11- shell-and-tube cryogenic heat exchanger；12-ln2Outlet valve；13- pre-cooling check valve；14-lng/ng outlet is unidirectional
Valve；15- master enters liquid/gas stop valve；16- gas-liquid changes three-way valve b；17- cryogenic liquid effusion meter；18- liquid inlet electromagnetic valve；19-
Feed liquor three-way valve；20- one-way cock a；21- flanged (FLGD) check valve a；22- liquid leakage unit；23- is flanged (FLGD) unidirectional
Valve b；24- low temperature fluid-containing pot；25- waters leakage unit feed liquor check valve；26- heat tracing copper pipe；27- flanged (FLGD) check valve c；
28- flanged (FLGD) check valve d；29- variable speed electric motors, particularly；30- turbofan；31- high-pressure nitrogen bottle；32- charge valve；33- push rod machinery dress
Put；34- water pump；35- water injection valve；36- adjustable pressure counterbalance valve a；The water tank with temperature regulating device for the 37-；The press water with form for the 38-
Case；39- arranges liquid/gas three-way valve；40- cryogenic gas effusion meter；41- air inlet electromagnetic valve；42- air inlet three-way valve；43- waters leaks
Unit breather check valve；44- one-way cock b；45- adjustable pressure counterbalance valve b；46- one-way cock c；The flanged (FLGD) list of 47-
To valve e；48- gas leakage unit；49- flanged (FLGD) check valve f；50- adjustable pressure counterbalance valve c；51- one-way cock d；
52- air accumulator；53- exhaust check valve；54- aerofluxuss mast；55- waters leakage unit；56- sealing agent storage tank；57- sealing agent exports
One-way cock；58- sealing agent nozzle；59- adjustable pressure counterbalance valve d；60- cylinder；61- spring is to medium-sized solenoid directional control valve；
62- gas cylinder；63rd, push rod.
Specific embodiment
The present invention provides a kind of leaking stoppage experiment system of lng/ng pipeline leakage, the system to the present invention below in conjunction with the accompanying drawings
It is described in detail.
Fig. 1 is the structural representation of the embodiment of the present invention.The leaking stoppage experiment system of lng/ng pipeline leakage includes: deposits sight
The lng examining object lng and ng is from supercharging Dewar flask 1；Deposit ln2And n2Ln2Dewar flask 2；With lng from be pressurized Dewar flask 1 and
ln2The shell-and-tube cryogenic heat exchanger 11 that Dewar flask 2 connects, in shell-and-tube cryogenic heat exchanger 11, by controlling the ln injecting2Come
Adjust lng pipeline in lng temperature, and in ng pipeline ng temperature；It is arranged in pipeline, for monitoring shell-and-tube low-temperature heat exchange
The first temperature sensor t1 and first pressure sensor p1 of the temperature and pressure of lng or ng operating temperature in device 11 pipeline；Logical
Cross gas-liquid conversion three-way valve b16 to be connected with cryogenic liquid effusion meter 17 and cryogenic gas effusion meter 40 respectively, record enters respectively
Flow through the liquids and gases flow of liquid leakage unit 22, gas leakage unit 48 and waters leakage unit 55；In ng pipeline,
Change three-way valve 16 with gas-liquid and be connected with heat tracing copper pipe 26, ng gas is carried out hyperthermic treatment；Respectively with cryogenic liquid effusion meter
17 and cryogenic gas effusion meter 40 connect liquid inlet electromagnetic valve 18, feed liquor three-way valve 19 and air inlet electromagnetic valve 41, air inlet three-way valve
42, for control enter liquid leakage unit 22, gas leakage unit 48 and waters leakage unit 55 open and close the moment and lasting when
Between；Described feed liquor three-way valve 19 controls lng to select to enter liquid leakage unit 22 or waters leakage unit 55；Described air inlet three-dimensional
Valve is used for controlling ng to select to enter gas leakage unit 48 or waters leakage unit 55；Described liquid leakage unit 22 is let out for lng
Leakage provides damaged pipeline, and described gas leakage unit 48 provides damaged pipeline for ng leakage, and described waters leakage unit 55 is
Lng/ng leakage provides waters breakage pipeline；Enter lng operating temperature in described liquid leakage unit 22 pipeline for monitoring
Second temperature sensor t2 of temperature and pressure and second pressure sensor p2；Described liquid leakage unit 22 is connected with pressure-adjustable
Power counterbalance valve c50, with described lng from supercharging Dewar flask 1 on from boost pressure regulation valve a4 together with control from described liquid leakage list
The pressure of the lng of unit 22 leakage；Enter the temperature of lng operating temperature and pressure in described gas leakage unit 48 pipeline for monitoring
4th temperature sensor t4 of power and the 4th pressure transducer p4；Described gas leakage unit 48 is connected with adjustable pressure counterbalance valve
D59, with described lng from supercharging Dewar flask 1 from boost pressure regulation valve a4 together with control and leak from described gas leakage unit 48
Ng pressure；Enter the of the temperature and pressure of lng/ng operating temperature in described waters leakage unit 55 pipeline for monitoring
Three-temperature sensor t3 and the 3rd pressure transducer p3；Described waters leakage unit 55 for simulating waters leakage is placed in band and regards
In the pressure water tank 38 of window, leakage hole is located at below the water surface；There is provided the pressure with form of water environment for leaking for waters
Water tank 38, can shoot waters leakage and Process of Leaking Stoppage using high-speed camera through form；For adjusting the pressure with form
The adjustable pressure counterbalance valve b45 of pressure and high-pressure nitrogen bottle 31, adjustable pressure counterbalance valve b45 and high-pressure nitrogen bottle 31 in water tank 38
It is connected with the pressure water tank 38 with form by gas piping respectively；For spraying nozzle 58 and the leak stopping storage tank 56 of sealing agent,
Before sealing agent nozzle 58 is placed in the leakage hole of waters leakage unit 55, it is connected with the leak stopping storage tank 56 of storage sealing agent；For
Waters leakage unit 55 leakage hole is formed about variable speed electric motors, particularly 29 and the turbofan 30 of water whirlpool, and turbofan 30 is placed in sealing agent nozzle 58
Afterwards, it is connected with variable speed electric motors, particularly, the water near agitation sealing agent nozzle 58；For adjusting water temperature in the pressure water tank 38 with form
Water tank 37 with attemperating unit and water pump 34, the water tank 37 with attemperating unit is by water pipe and band form pressure water tank 38 even
Connect, the water tank 37 with attemperating unit and water pump 34 connect；Flow through liquid leakage unit 22 and waters leakage unit 55 for receiving
Lng low temperature fluid-containing pot 24, air exit is connected with air accumulator 52 by one-way cock d51；Flow through gas for receiving
The air accumulator 52 of other positions aerofluxuss in the ng of leakage unit 48 and waters leakage unit 55 and system, air exit passes through venting
One-way cock 53 is connected with aerofluxuss mast 54.
The structure of shell-and-tube cryogenic heat exchanger 11 is the sealing sleeve pipe being socketed a big volume outside lng/ng pipeline, lng/
Ng flows through the lng/ng pipeline of shell-and-tube cryogenic heat exchanger 11, by ln2It is passed through in sealing sleeve pipe annular space, using the ln changing entrance2
The temperature to change lng/ng for the flow.ln2Flow be by adjust ln2Ln on Dewar flask 22The aperture of liquid feed valve 7 is come real
Existing.Heat tracing copper pipe 26 passes through to arrange electric heater around copper coil pipe, controls and flows through from shell-and-tube cryogenic heat exchanger 11
Ng gas temperature.The setting of shell-and-tube cryogenic heat exchanger 11 solves in prior art and cannot change lng/ by experiment porch
Ng gas temperature, thus the technological deficiency on plugging effect impact under the conditions of different leakage Temperature of Workings cannot be simulated.
As the preferred technical solution of the present invention, lng is pressurized Dewar flask 1 and ln certainly2Pressure can be provided from supercharging Dewar flask 2
Lng/ng and ln in the range of 0.1mpa-1.4mpa2/n2, from boost pressure regulation valve a4, from boost pressure regulation valve b8, adjustable pressure
Under the collective effect of counterbalance valve c50 and adjustable pressure counterbalance valve d59, adjust the pressure of leakage working medium.The program can be checking
The impact experiment offer condition to plugging effect for the leakage power pressure.
As the preferred technical solution of the present invention, pressure water tank 38 allowable stress with form is not less than 1mpa, to protect
Confirmation is tested can be with the lower 10 meters of leak condition of simulation water, and the light transmittance of the transparent window in steel heat exchangers 4 is not less than 92.5%,
In order to observe.Transparent window on pressure water tank 38 with form is made using the acrylic board of 15mm, to ensure experiment
Safety.Essential safe type lighting source is set in the pressure water tank 38 with form, and illumination region covers entirely with form
Pressure water tank 38 is internal so that the effect of shooting record leakage and Process of Leaking Stoppage is more preferable.
As the preferred technical solution of the present invention, the water tank 37 with temperature regulating device passes through resistive heater in regulating tank
Electric current and conduction time, control the change of Water in Water Tanks temperature.Through water pump 34, temperature is met the water requiring to be fed to band form
Pressure water tank 38, the flow feeding water can be controlled by the variable governor motion of water pump 34.Pressure water tank 38 with form
Outlet is connected with adjustable pressure counterbalance valve a36, to ensure that in the pressure water tank 38 with form, operating pressure is invariable.
As the preferred technical solution of the present invention, by changing the rotating speed of buncher 29, control the rotating speed of turbofan 30, from
And simulate the impact to plugging effect for the vortex stirring.Complete by the push rod operation device 33 that is arranged on the pressure water tank 38 with form
Become the keying operation of waters leakage unit 55 leakage hole.By adjusting stop valve and pressure-regulating valve control on sealing agent storage tank 56
Sealing agent processed sprays from sealing agent nozzle 58, and sealing agent nozzle is placed in leakage hole dead ahead so that the sealing agent spraying can be complete
Entirely act on leakage hole position.The program is solved to be simulated by experiment porch and verify in prior art and leaks under water
The experiment of the pipeline leaking stoppage effect of lng/ng.
As the preferred technical solution of the present invention, in experimental system, it is provided with pipeline one-way cock a20, one-way cock
B44, one-way cock c46 and the one-way cock d51 of low temperature fluid-containing pot 24 outlet, by gas piping and air accumulator 52 phase
Even, can first the gas working medium in system pipeline be collected in air accumulator 52, finally discharge from the aerofluxuss mast 54 equipped with flameproof enclosure.
This system can also be not provided with air accumulator 52 and aerofluxuss mast 54, but the ng gas being directly released in air can cause dirt to air
Dye, and it is likely to result in fire or blast.Therefore, setting air accumulator 52 and aerofluxuss mast 54, have air conservation and prevention
Fire and the beneficial effect of blast, solve existing experiment porch simultaneously and are not used in thering is flammable, explosiveness working medium defect.
As the preferred technical solution of the present invention, through the lng of shell-and-tube cryogenic heat exchanger 11, three-dimensional is changed by gas-liquid
Valve b16, lng is fed to the flow that cryogenic liquid effusion meter 17 measures lng, controls leakage process through liquid inlet electromagnetic valve 18
Open and close and the persistent period, select to enter land-based area liquid leakage unit 22 or waters leakage unit before being fed to feed liquor three-way valve 19
55.When select enter liquid leakage unit 22 when, need to through second temperature sensor t2 and second pressure sensor p2, measure into
Enter the temperature and pressure of the lng to liquid leakage unit 22.When selecting to enter waters leakage unit 55, need to be through the 3rd temperature
Sensor t3 and the 3rd pressure transducer p3, measurement enters into the temperature and pressure of the lng of waters leakage unit 55.Or, warp
The ng crossing shell-and-tube cryogenic heat exchanger 11 changes three-way valve b16 by gas-liquid, through heat tracing copper pipe 26, ng is fed to low temperature gas
Flowmeter body 40 measures the flow of ng, controls the keying of leakage process and persistent period through air inlet electromagnetic valve 41, be fed to into
Select before gas three-way valve 42 to enter gas leakage unit 48 or waters leakage unit 55.When selection enters gas leakage unit 48
When, the temperature of the ng entering into gas leakage unit 48 through the 4th temperature sensor t4 and the 4th pressure transducer p4, need to be measured
Degree and pressure.When select enter waters leakage unit 55 when, need to through three-temperature sensor t3 and the 3rd pressure transducer p3,
Measurement enters into the temperature and pressure of the ng of waters leakage unit 55.Program design uses the feed flow sharing and supply air line,
Simplify system equipment and pipeline arrangement.
Fig. 2 is the structural representation of the embodiment of push rod machinery 33 of the present invention.Push rod machinery 33 includes: operation
The cylinder 60 of push rod 63 action；The spring controlling cylinder 60 air inlet is to medium-sized solenoid directional control valve 61；There is provided pressure empty for cylinder 60
The gas cylinder 62 of gas；The waters leakage unit 55 of push rod machinery 33 effect.By changing to described spring to medium-sized electromagnetism
Power to valve 61 left side or right side, by a side of the air inlet of gas cylinder 62 and cylinder 60 or the air inlet of b side, thus push control rod
63 by the closing of the leakage hole on waters leakage unit 55 or open.After electromagnetic valve is stopped power supply, spring under spring force
Medium-sized solenoid directional control valve 61 is returned to middle position, the gas passage at locking cylinder a and b two ends, the position of push rod 63 keeps constant.Push away
Bar machinery 33 improves the speed opening and closing leakage hole, solves due to the slow impact to experimentation of switching motion.
The process tested using the leaking stoppage experiment system of the present invention is as follows:
Preparation before experiment includes: change and install meet the liquid leakage unit 22 of requirement of experiment, gas is let out
Leakage unit 48 and waters leakage unit 55, are not turned on described liquid leakage unit 22, gas leakage unit 48 and water before experiment
The leakage hole of domain leakage unit 55；The water filling in the water tank 37 with temperature regulating device, and open temperature control heating device, when water temperature meets
Open water pump 34 and water injection valve 35 during requirement of experiment to water filling in the pressure water tank 38 with form, adjust Pump output scalable and enter
Enter streamflow regime in the pressure water tank 38 with form.Standard-sized sheet adjustable pressure counterbalance valve b45, when water level exceedes waters leakage unit 55
Leakage hole certain altitude when, open adjustable pressure counterbalance valve a36 and adjust adjustable pressure counterbalance valve b45 and so that both pressure is equal to
The experimental pressure setting.Open the air bleeding valve 32 of high-pressure nitrogen bottle 31, adjust pressure at expulsion and the pressure-adjustable of high-pressure nitrogen bottle 31
The setting pressure of power counterbalance valve a36 and pressure counterbalance valve b45 is equal, and now in the pressure water tank 38 with form, water level keeps not
Become, the temperature and pressure in the pressure water tank 38 with form is surveyed by the 5th pressure transducer t5 and the 5th pressure transducer p5 respectively
, pressure value represents the depth under water that waters leakage unit 55 occurs leakage, thus overcoming experiment porch cannot verify surrounding
The technological deficiency that water environment affects on Process of Leaking Stoppage with leakage depth；Open from supercharging ln2N in Dewar flask 22Outlet valve/remove
Air valve 6, makes n2Respectively enter liquid line, gas piping and gas-liquid mixed pipe line, standard-sized sheet adjustable pressure counterbalance valve c50 and adjustable
Pressure counterbalance valve d59, makes n2Finally discharge from aerofluxuss mast 54, degasification operation is carried out to whole pipeline, displaces in initial stage pipeline
The air existing is it is ensured that there is not the oxygen burning or blast is required in the flammable working medium (lng or ng) entering, thus overcoming
Experiment porch cannot be carried out the defect of flammable refrigerant leakage experiment；Open from supercharging ln2Ln in Dewar flask Dewar flask 22Go out liquid
Valve 7 enters liquid line through pre-cooling three-way valve 10, carries out pre-cooling to the liquid line of whole experimental system.Also lead to if needed
Cross gas-liquid three-way valve b16 by ln2Introduce gas piping and carry out precooling treatment, the ln after use2/n2Enter low temperature fluid-containing pot 24 or
Air accumulator 52, and finally discharge from aerofluxuss mast 54.After having carried out degasification and precooling treatment, close from supercharging ln2In Dewar flask 2
N2Outlet valve 6, change pre-cooling three-way valve 10, make ln2Enter shell-and-tube cryogenic heat exchanger 11, control ln2Outlet valve 12 leaves
Degree, makes ln2It is stored in the housing of shell-and-tube cryogenic heat exchanger 11, and be its pre-cooling.In experimentation, when precooling temperature is close
Needed for experiment during lng/ng temperature, according to experiment needs, open lng from the lng outlet valve 3 being pressurized Dewar flask 1 or ng outlet valve
5, adjust lng from the outlet pressure being pressurized Dewar flask 1, part closes adjustable pressure counterbalance valve c50 and adjustable pressure counterbalance valve d59
To meet experimental pressure needs.According to the position of gas-liquid three-way valve a9 valve element, lng or ng is made to flow into shell-and-tube cryogenic heat exchanger 11
Internal duct, the first temperature sensor t1 and first pressure sensor p1 is placed in the internal duct of shell-and-tube cryogenic heat exchanger 11
Interior, for measuring the temperature and pressure of the lng/ng flowing through, when demanded, open master and enter liquid/gas stop valve 15, Jing Guoqi
Liquid three-way valve b16, according to spool position, lng or ng meeting requirement of experiment flows into liquid line or gas piping thereafter.Liquid
Cryogenic liquid effusion meter 17 and liquid inlet electromagnetic valve 18 are connected with pipeline, for measuring the fluid flow in liquid line and control
Flow through the time that liquid line lng starts and stops.Then pass through feed liquor three-way valve 19, according to spool position, control lng to flow into
Liquid leakage unit 22 or waters leakage unit 55.Second temperature sensor t2, second pressure sensor p2 and the 3rd temperature pass
Sensor t3, the 3rd pressure transducer p3 are respectively used to measure the lng's entering liquid leakage unit 22 and waters leakage unit 55
Temperature and pressure.Heat tracing copper pipe 26, cryogenic gas effusion meter 17 and air inlet electromagnetic valve 41 are connected with gas piping, for reality
The gas flow that the ng gas testing needs carries out heating, measure in gas piping and control are flow through gas piping ng and are started and stop
Time.Then pass through air inlet three-way valve 42, according to spool position, control lng inflow gas leakage unit 48 or waters leakage
Unit 55.4th temperature sensor t4, the 4th pressure transducer p4 and three-temperature sensor t3, the 3rd pressure transducer p3 divide
The temperature and pressure of the ng entering gas leakage unit 48 and waters leakage unit 55 Yong Yu not measured.Open one-way cock
A20, one-way cock b44 or one-way cock c46, will be unsatisfactory for the lng/ng of requirement of experiment through discharge opeing/air pipe, pass through
Air accumulator 52, finally discharges it is ensured that flammable working medium does not have combustion explosion dangerous in laboratory environment from aerofluxuss mast.Open use
In the plugging device of initial stage sealing liquid leakage unit 22 or gas leakage unit 48, so that lng or ng is leaked out respectively, use
The blocking method of later development or instrument carry out leak stopping operation to liquid leakage unit 22 or gas leakage unit 48, complete to test
To check lng or ng under different temperatures, pressure and traffic conditions, the suitability of blocking method or device and reliability.Due to
The amount of lng or ng of leakage is little with respect to the amount flowing through leakage module, needs to ensure the good ventilation of laboratory in experimentation,
And strictly control leak time, using the electrical equipment of essential safe type, can effectively prevent from liquid leakage unit 22 or
There is burning or explode in lng or ng leaking out in gas leakage unit 48.If adopted and waters leakage unit 55 identical
Method for designing, arranges visual confined space, lng and ng leaking out around liquid leakage unit 22 or gas leakage unit 48
Can be directly discharged in low temperature fluid-containing pot 24 and air accumulator 52, discharge experiment outdoor eventually through aerofluxuss mast 54, eliminate reality
Test the possibility that room occurs combustion explosion, but this will hinder the leak stopping mechanical apparatus using design to carry out plugging operation, by serious shadow
Ring experiment effect.In consideration of it, the present invention is not the independent confined space of land-based area leakage setting.When carrying out underwater leak stopping experiment,
Push rod machinery 33 is operated off the leakage hole of waters leakage unit 55, lng/ng therein can occur to leak under water.Band
Open sealing agent storage tank 56 sealing agent outlet one-way cock 57, adjust sealing agent storage tank 56 discharge pressure, make sealing agent from
Spray in sealing agent nozzle 58, sealing agent nozzle 58 is placed in leakage hole dead ahead, the sealing agent ejecting covers on leakage hole,
Leakage under water is blocked.Adjust the rotating speed of variable speed electric motors, particularly 29, the rotating speed of coupled turbofan 30 can change, therewith with this
Simulation is different to be vortexed the impacts to plugging effect for the situation under water, thus overcome experimental system cannot be carried out submerged cryogenic liquid or
The defect of gas piping leakage experiment, overcomes that cannot to monitor experiment condition such as water environment or leak stopping injection pressure etc. right simultaneously
The defect of plugging effect impact.Leakage-stopping process can be by being directed at the pressure water tank 38 with form by camera lens under water
Form is shot, and records overall process, provides video image foundation for analysis plugging effect.From pressure water tank 38 row with form
The waste gas going out is introduced in air accumulator 52, and the lng/ng flowing through waters leakage unit 55 passes through row's liquid/gas three-way valve 39, according to it
Spool position, is drained in cryogenic liquid fluid-containing pot 24 and air accumulator 52 respectively, and eventually passes through aerofluxuss mast 54 and enter air.
After the completion of experiment, standard-sized sheet adjustable pressure counterbalance valve c50 and adjustable pressure counterbalance valve d59, sealing liquid leakage unit 22, gas are let out
Leakage unit 48 and the leakage hole of waters leakage unit 55, close lng from being pressurized Dewar flask 1 all outlet ports valve, open ln2From supercharging
The n of Dewar flask 22Outlet valve/air removing valve 6, n2Flow through liquid line, gas piping, gas-liquid mixed pipeline and gas exhaust piping, flow into
Low temperature fluid-containing pot 24 and air accumulator 52, replace residual gas therein completely, and residual liquid flashes to gas and n2Final together
Discharge from aerofluxuss mast 54.When system pipeline is full of n2Afterwards, close n2Outlet valve/air removing valve 6.The water tank 37 of stop band attemperating unit
Heating, close down water pump 34, the water in the pressure water tank 38 with form all released.
The conclusion that technology according to the present invention scheme obtains can be applicable to instruct and training officer processes different condition
Under lng/ng pipeline leakage accident.Because leakage working medium can be changed using the shell-tube type cryogenic heat exchanger in this experimental system
Temperature, changes leak pressure by adjusting the adjustable pressure counterbalance valve from after pressure charging valve and leakage module on Dewar flask；Pass through
Will leak out module and be arranged on land-based area and waters, using the leakage of high-speed camera record and Process of Leaking Stoppage；By with temperature regulating device
Water tank and water pump, control the temperature of water and the flow velocity entering in the pressure water tank with form；By changing the rotating speed of buncher,
Control the rotating speed of turbofan, thus simulating the impact to plugging effect for the vortex stirring.Changing experiment condition is to inquire into leakage work
The temperature and pressure of matter itself, and the impact to plugging effect for the ambient environmental conditions, improve emergency disposal theory, and this are made
For formulating the theoretical direction of lng/ng pipeline leakage plugging operations Safety guide, leak stopping can be completed using this experimental system and dispose
Method practice and training.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept equivalent or change in addition, all should be included within the scope of the present invention.
Claims (9)
1. a kind of leaking stoppage experiment system of lng/ng pipeline leakage it is characterised in that: include control module, lng/ng land-based area leakage
Module, lng/ng waters leakage module and leak stopping operation module；
The lng that described control module includes depositing leak stopping object lng is certainly pressurized Dewar flask (1), deposits ln2Ln2From supercharging Dewar
Bottle (2) and shell-and-tube cryogenic heat exchanger (11), leak module for lng/ng land-based area and waters leakage module provide temperature and pressure
Controlled lng/ng；
Described lng changes three-way valve a by gas-liquid respectively from the lng outlet valve (3) being pressurized Dewar flask (1) and ng gas outlet valve
(9) it is connected with shell-and-tube cryogenic heat exchanger (11), described ln2N from supercharging Dewar flask (2)2Outlet valve/air removing valve (6) and shell
Formula cryogenic heat exchanger (11) connects；Described ln2Ln from supercharging Dewar flask (2)2The pre-cooled three-way valve of liquid valve (7) (10) and pipe
Shell-type cryogenic heat exchanger (11) connects；
Described shell-and-tube cryogenic heat exchanger (11) connects master through lng/ng Outlet check valves (14) and enters liquid/gas stop valve (15), institute
State the pre-cooled check valve of pre-cooling three-way valve (10) (13) connection master and enter liquid/gas stop valve (15)；Described master enters liquid/gas stop valve
(15) the other end connects gas-liquid conversion three-way valve b (16)；The another two ends of described gas-liquid conversion three-way valve b (16) connect low respectively
Geothermal liquid effusion meter (17) and cryogenic gas effusion meter (40)；Described cryogenic liquid effusion meter (17) is through liquid inlet electromagnetic valve (18) even
Tap into liquid three-way valve (19)；Described cryogenic gas effusion meter (40) connects air inlet three-way valve (42) through air inlet electromagnetic valve (41)；
Described feed liquor three-way valve (19) is connected with waters leakage unit feed liquor check valve (25)；Described air inlet three-way valve (42) and water
Domain leakage unit breather check valve (43) is connected；
Described lng/ng land-based area leakage module includes liquid leakage unit (22), gas leakage unit (48), low temperature fluid-containing pot
(24), air accumulator (52) and aerofluxuss mast (54)；
Described liquid leakage unit (22) two ends connect flanged (FLGD) check valve a (21) and flanged (FLGD) check valve b (23) respectively,
Described flanged (FLGD) check valve a (21) is connected with feed liquor three-way valve (19) by liquid line, described flanged (FLGD) check valve a
(21) it is connected with gas exhaust piping, second temperature sensor t2 and second pressure on the liquid line and feed liquor three-way valve (19) between
Sensor p2；
Described gas piping is connected to air accumulator (52) through one-way cock a (20)；Low temperature fluid-containing pot (24) is through one-way cock d
(51) it is connected to air accumulator (52), air accumulator (52) is connected with aerofluxuss mast (54) through exhaust check valve (53)；
Described flanged (FLGD) check valve b (23) is connected to low temperature fluid-containing pot (24) through adjustable pressure counterbalance valve c (50)；
Described gas leakage unit (48) two ends connect flanged (FLGD) check valve e (47) and flanged (FLGD) check valve f (49) respectively,
Described flanged (FLGD) check valve e (47) is connected with air inlet three-way valve (42) by gas piping, described flanged (FLGD) check valve e
(47) it is connected with gas exhaust piping, the 4th temperature sensor t4 and the 4th pressure on the gas piping and air inlet three-way valve (42) between
Sensor p4；
Described gas exhaust piping is connected to air accumulator (52) through one-way cock c (46)；
Described flanged (FLGD) check valve f (49) is connected to air accumulator (52) through adjustable pressure counterbalance valve d (59), and finally through aerofluxuss
Mast (54) is discharged in air；
Described lng/ng waters leakage module include waters leakage unit (55), the pressure water tank with form (38), water pump (34),
Water tank with temperature regulating device (37), low temperature fluid-containing pot (24), air accumulator (52) and aerofluxuss mast (54)；
Connect gas-liquid between described waters leakage unit feed liquor check valve (25) and waters leakage unit breather check valve (43) to mix
Close pipeline, described gas-liquid mixed pipeline is through three-temperature sensor t3, the 3rd pressure transducer p3 and flanged (FLGD) check valve c
(27) it is connected to waters leakage unit (55), described waters leakage unit (55) is through flanged (FLGD) check valve d (28) and row's liquid/gas
Three-way valve (39) is connected respectively to adjustable pressure counterbalance valve c (50) and adjustable pressure counterbalance valve d (59)；
Described waters leakage unit (55) is arranged in the pressure water tank with form (38)；
The described pressure water tank with form (38) is upper to arrange the 5th temperature sensor t5, the 5th pressure transducer p5；
Gas-liquid mixed between described waters leakage unit feed liquor check valve (25) and waters leakage unit breather check valve (43)
Pipeline is connected to air accumulator (52) through one-way cock b (44)；
The described pressure water tank with form (38) is connected to air accumulator (52) through adjustable pressure counterbalance valve b (45)；
The water inlet of the described pressure water tank with form (38) is through water injection valve (35) and water pump (34) and the water tank with temperature regulating device
(37) it is connected；
The outlet of the described pressure water tank with form (38) is through adjustable pressure counterbalance valve a (36) and the water tank with temperature regulating device
(37) it is connected；
The described pressure water tank with form (38) is connected with high-pressure nitrogen bottle (31) through charge valve (32)；
Described leak stopping operation module includes push rod machinery (33), sealing agent storage tank (56), sealing agent nozzle (58), turbofan
And variable speed electric motors, particularly (29) (30)；
Described push rod machinery (33) is arranged in the pressure water tank with form (38), blocks on waters leakage unit (55)
Leak；
Described turbofan (30) is placed in waters leakage unit (55) leak front end, is connected with variable speed electric motors, particularly (29)；
Described sealing agent nozzle (58) is placed between turbofan (30) and waters leakage unit (55) leak, exports unidirectional through sealing agent
Plug valve (57) is connected with sealing agent storage tank (56).
2. a kind of lng/ng pipeline leakage according to claim 1 leaking stoppage experiment system it is characterised in that: described gas-liquid
It is connected heat tracing copper pipe (26) between conversion three-way valve b (16) and cryogenic gas effusion meter (40).
3. a kind of lng/ng pipeline leakage according to claim 1 leaking stoppage experiment system it is characterised in that: described shell
Formula cryogenic heat exchanger (11) is provided with temperature first temperature for monitoring the working fluid in shell-and-tube cryogenic heat exchanger (11)
The first pressure sensor p1 of the pressure of sensor t1 and the working fluid, is provided with ln2Outlet valve (12)；Described lng is from supercharging
Dewar flask (1) is provided with from boost pressure regulation valve a (4), described ln2It is provided with from boost pressure regulation valve b (8) from supercharging Dewar flask (2).
4. a kind of lng/ng pipeline leakage according to claim 1 leaking stoppage experiment system it is characterised in that: described gas storage
Tank (52) connects aerofluxuss mast (54) through exhaust check valve (53).
5. a kind of lng/ng pipeline leakage according to claim 1 leaking stoppage experiment system it is characterised in that: described push rod
Machinery (33) includes cylinder (60), push rod (63), spring to medium-sized solenoid directional control valve (61) and gas cylinder (62), described
Gas cylinder (62) is connected to medium-sized solenoid directional control valve (61) with spring by trachea, and described spring is to medium-sized solenoid directional control valve
(61) it is connected with cylinder (60), the push rod (63) in cylinder (60) blocks the leak on waters leakage unit (55).
6. a kind of lng/ng pipeline leakage according to claim 1 leaking stoppage experiment system it is characterised in that: described band regards
The pressure water tank (38) of window is provided with transparent window, and light transmittance is not less than 92.5%, and bearing capacity is not less than 1mpa.
7. a kind of lng/ng pipeline leakage according to claim 1 leaking stoppage experiment system it is characterised in that: the described 5th
The probe of temperature sensor t5 is arranged at below the pressure water tank with form (38) water surface, the spy of described 5th pressure transducer p5
Head is arranged at more than the pressure water tank with form (38) water surface.
8. a kind of lng/ng pipeline leakage according to claim 1 leaking stoppage experiment system it is characterised in that: described pipeline
All using cryogenic vacuum double-layer stainless steel pipe.
9. a kind of lng/ng pipeline leakage according to claim 1 leaking stoppage experiment system it is characterised in that: described feed liquor
Electromagnetic valve (18) and air inlet electromagnetic valve (41) are all from intrinsic safety low-temperature solenoid valve.
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| CN112475599A (en) * | 2020-11-17 | 2021-03-12 | 莫祖龙 | Auxiliary gas injection device for laser processing |
| CN112924489A (en) * | 2021-02-05 | 2021-06-08 | 西南石油大学 | Low-temperature dangerous liquid accident leakage jet experiment device |
| CN113464836A (en) * | 2021-07-07 | 2021-10-01 | 广州市粤佳气体有限公司 | Full-automatic supply process for low-temperature liquid gas dewar tank |
| CN113776757A (en) * | 2021-09-17 | 2021-12-10 | 大连船舶重工集团有限公司 | Leakage monitoring and processing system of B-type independent storage cabin |
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Effective date of registration: 20190215 Address after: 611130 Wenjiang District, Chengdu, Sichuan, eastern section of science and Technology Development Park, Chengdu cross strait science and Technology Development Park Patentee after: SICHUAN HAISHENGJIE CRYOGENIC TECHNOLOGY CO.,LTD. Address before: 116026 1 Linghai Road, hi tech park, Dalian, Liaoning Patentee before: Dalian Maritime University |
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Address after: 611130 Wenjiang District, Chengdu, Sichuan, eastern section of science and Technology Development Park, Chengdu cross strait science and Technology Development Park Patentee after: Haier Biomedical Technology (Chengdu) Co.,Ltd. Address before: 611130 Wenjiang District, Chengdu, Sichuan, eastern section of science and Technology Development Park, Chengdu cross strait science and Technology Development Park Patentee before: SICHUAN HAISHENGJIE CRYOGENIC TECHNOLOGY CO.,LTD. |