CN106908446B - Gas hydrate choking mechanism imitative experimental appliance and method under bubble flow - Google Patents
Gas hydrate choking mechanism imitative experimental appliance and method under bubble flow Download PDFInfo
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- CN106908446B CN106908446B CN201710116610.1A CN201710116610A CN106908446B CN 106908446 B CN106908446 B CN 106908446B CN 201710116610 A CN201710116610 A CN 201710116610A CN 106908446 B CN106908446 B CN 106908446B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/85—Investigating moving fluids or granular solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N2021/8405—Application to two-phase or mixed materials, e.g. gas dissolved in liquids
Abstract
The invention belongs to oil gas Transportation Engineering fields, it is related to gas hydrate choking mechanism imitative experimental appliance and method under bubble flow, the object of the present invention is to provide a kind of simulation blisters to flow down gas hydrate choking mechanism imitative experimental appliance and method, for realizing the research for assembling formation mechenism in metallic conduit to gas hydrate under bubble flow indoors, block to form simulation accurately model parameter and valid data are provided in metallic conduit for gas hydrate under bubble flow, and it can determine under different bubble flow flow velocitys that hydrate blocks various metallic conduit hydrates under the speed to be formed and simulation deepwater environment and assembles the mechanism study to be formed, it include: control pressurer system, gas injection system, experimental simulation system, cooling system, the circulatory system, culvert system, monitor storage system；Wherein: control pressurer system, gas injection system, cooling system, the circulatory system, culvert system are all connected as experimental model system service with experimental simulation system, by controlling the injection rate of gas and the flow velocity of vertical liquid in pipe come the formation mechenism after analog study gas hydrate synthesis in metallic conduit adhesion and aggregation.
Description
Technical field
The invention belongs to oil gas Transportation Engineering field, it is related to gas hydrate choking mechanism imitative experimental appliance under bubble flow
And method.
Background technique
With the increasingly deficient and global Oil Gas demand continuous soaring of landing field petroleum resources, people provide marine oil and gas
The exploration and exploitation in source are more and more, especially increase the exploitation dynamics to deep water hydrocarbon resource.Obtaining from underwater installation is especially in depth
Under the conditions of water exploitation and pipeline petroleum resources have become possibility, but during deep water hydrocarbon Mining Transport there is
Many important problems and the harm to environment, wherein most obvious and most serious is exactly the stifled of the underwater transport pipeline in profundal zone
Plug accident.The blocking of the underwater transport pipeline in profundal zone will cause the interruption of transport, cause to leak, and pollution of marine environment makes oil gas
Transportation industry is difficult to normal operation, and consequence is very serious.
But for a long time, due to being limited by conditions such as deepwater environment, line cloggings, people are to underwater especially deep water
Oil spilling metallic conduit utilizes Hydrate Plugging research and few, and the research to gas hydrate synthesis under deepwater environment under environment
Also not deep enough with the formation of various metallic conduit traffics, there is no both at home and abroad can simulate blister at present flows down gas hydrate
Choking mechanism imitative experimental appliance and method.These all fully understand metallic conduit Hydrate Plugging to us and how to cope with
This difference line clogging causes very big difficulty.
Summary of the invention
To solve the above-mentioned problems, the object of the present invention is to provide a kind of simulation blisters to flow down gas hydrate choking mechanism
Imitative experimental appliance and method, for realizing indoors to gas hydrate under bubble flow in metallic conduit aggregation formation mechenism
Research blocks to form simulation and provide accurately model parameter and valid data in metallic conduit for gas hydrate under bubble flow,
And it can determine that hydrate blocks various metallic conduit water under the speed to be formed and simulation deepwater environment under different bubble flow flow velocitys
It closes object and assembles the mechanism study to be formed, specific technical solution is as follows:
Gas hydrate blocking mechanism imitative experimental appliance under a kind of bubble flow, comprising: control pressurer system, gas injection
System, experimental simulation system, cooling system, the circulatory system, culvert system, monitoring storage system；Wherein: pressure control system
System, gas injection system, cooling system, the circulatory system, culvert system are all connected as experimental model system with experimental simulation system
System service, in which: control pressurer system provides pressure for experimental model system, and gas injection system provides for experimental model system
Gas is injected, experimental simulation system provides the metallic conduit environment that Hydrate Plugging is formed under simulated high-pressure, low temperature to test, cold
But system provides required temperature environment for experimental model system, and the circulatory system provides simulation pipeline liquid for experimental model system
Flowing environment, culvert system provide for experimental model system into the sewage discharge after dress liquid and experiment, monitoring storage
The operating of system monitoring experimental model system simultaneously stores data.
Control pressurer system includes: Nitrogen source gases, gas booster pump, back pressure tank, Nitrogen source gases, gas booster pump, back pressure
Tank passes sequentially through pipeline and is connected, and the connected pipeline of gas booster pump, back pressure tank is equipped with back pressure tank inlet control valve.
Gas injection system includes: gas storage tank, gas injection control valve, smash dynamic valve, gas flowmeter；Gas
Holding vessel is connected by pipeline with gas injection control valve, and gas injection control valve is moved with smash passes through pipeline phase between valve
Even, smash is moved on the pipeline connected between valve and experimental simulation system equipped with gas flowmeter.
Experimental simulation system, comprising: experiment simulation storehouse, experiment simulation storehouse upper and lower ends sealing, top is provided with high pressure nitrogen
Injection hole, cooling water outlet, circulating water outlet, lower part are provided with gas injection hole, cooling water injection hole, recirculated water injection hole, real
Test on the vertical direction of simulation storehouse circumferential wall and have two column windows: one is classified as two illumination forms, and one is classified as observation window,
Gas transmitting tube, circulating water intake pipe are installed in experiment simulation orlop end, and gas transmitting tube and the gas for testing simulation storehouse lower part are infused
Enter hole connection, circulating water intake pipe with experiment simulation storehouse lower part circulating water intake be connected, experiment simulate storehouse in all around around
Cooling water-circulating pipe, cooling water-circulating pipe upper end are connected with cooling water outlet, and lower end is connected with cooling water inlet, experiment simulation storehouse
It is interior to erect one piece point half combination standpipe, point half combination lower riser end surrounding aperture, half combination standpipe face observation window of a half point and
It is set as transparent, card slot is had on the other half standpipe, the lower part of point half combination standpipe is provided with recirculated water into hole, gas transmitting tube
At point half combination standpipe lower central；Back pressure tank is connect by pipeline with safety valve, and safety valve passes through pipeline and experiment mould
The high pressure nitrogen injection hole at quasi- silo roof end is connected, and the pipeline that back pressure tank is connected with safety valve is equipped with back pressure tank and measures pressure gauge.
Cooling system includes: cooling sea water outlet valve, cooling unit, cooling sea water inlet valve, thermometer；Cooling sea water outlet valve,
Cooling sea water inlet valve is connected with cooling unit by pipeline, and cooling sea water outlet valve passes through with experiment simulation storehouse top cooling water outlet
Pipeline is connected, and cooling sea water inlet valve is connected with experiment simulation storehouse lower part cooling water inlet by pipeline, and thermometer is housed on pipeline.
The circulatory system includes: recirculated water outlet water control valve, circulating pump, recirculated water water inlet control valve, flowmeter；Experiment simulation
The circulating water outlet and recirculated water outlet water control valve, recirculated water outlet water control valve and circulating pump on storehouse top, recirculated water water inlet control
Valve passes sequentially through pipeline with the circulating water intake of circulating pump, experiment simulation storehouse lower part and is connected, recirculated water outlet water control valve and circulation
Flowmeter is housed on the connected pipeline of pump.
Culvert system includes: water inlet control valve, intake pump, pond, drain valve；Water inlet control valve, intake pump, pond,
Drain valve passes sequentially through pipeline and is connected, and water inlet control valve is connected on recirculated water outlet water control valve and experiment simulation storehouse by pipeline
On the connected pipeline of the circulating water outlet in portion, drain valve is connected under recirculated water water inlet control valve and experiment simulation storehouse by pipeline
On the connected pipeline of the circulating water intake in portion.
Upper flange and lower flange is respectively set in experiment simulation storehouse top and bottom.
Monitoring storage system includes high-speed camera and computer, and high-speed camera is connected with computer, high-speed camera
Alignment lens observation window.
Simulation blister of the invention flows down gas hydrate blocking mechanism analogue experiment method, utilizes preceding claim
Simulation blister flows down gas hydrate blocking mechanism imitative experimental appliance, and steps are as follows:
(1), the Preparatory work of experiment stage:
The upper flange for opening experiment simulation storehouse, extracts the half-covering tube for having card slot, well in advance is loaded onto face upwards in turn
Metallic conduit sample, put back to after installing, guarantee to coincide with the other half, screw upper flange, closed safe valve, recirculated water water inlet
Control valve, circulating water outlet control valve, blowdown valve, smash move valve, open water inlet control valve, start intake pump, to experiment mould
Liquid needed for injecting in quasi- storehouse is then shut off water inlet control valve until liquid level floods circulating water pipeline outlet, into
Water pump opens cooling sea water inlet valve and cooling sea water outlet valve, allows the cold water after freezing by water cooler in experimental simulation device
Middle circulation makes the temperature in experiment simulation storehouse reach experiment required temperature, opens recirculated water outlet water control valve and recirculated water
Water inlet control valve starts circulating pump, guarantees the liquid flowing in simulated experiment storehouse in point half combination standpipe.
Cooling circulating water has reached experiment required temperature in experiment simulation storehouse, circulates water holding in device, protects
It holds experiment cooling sea water outlet valve and cooling sea water inlet valve is opened；Open the back pressure tank entrance control between gas booster pump and back pressure tank
Valve processed, starting gas booster pump are started to work, and the pressure of back pressure tank are read from back pressure tank measurement pressure gauge, to back pressure pressure inside the tank
After reaching pressure needed for operating condition of test, back pressure tank inlet control valve is closed, gas booster pump is closed, opens the safety-valve；Open light
Source starts high-speed camera and computer from the polishing into experiment simulation storehouse of illumination form, guarantees high-speed camera alignment observation
Form；Preparatory work of experiment terminates；
(2), the progress stage is tested:
When temperature reaches experiment set temperature in experiment simulation storehouse, gas injection control valve is opened, high pressure is then opened
Ball moves valve, controls gas flowmeter flow, starts gas hydrate blocking mechanism simulated experiment under bubble flow, simulates storehouse to experiment
Interior is divided to injection gas in half combination standpipe to capture bubble automatically with high-speed camera on two different metal confusers simultaneously
The formation of hydrate and aggregation blocking, gas flow is certain, and circulating water flow is certain, and observes that metallic conduit has water
Close object formed until, an experimentation terminates, high-speed camera capture image data by data line pass to computer into
Row storage；
(3), the blowdown stage is tested:
Cooling device is first closed, the smash for closing experiment simulation storehouse lower end is moved valve 11, recirculated water water inlet control valve and followed
Ring water outlet water control valve opens the drain valve of experiment simulation storehouse lower end, and the sewage after primary experiment in experiment simulation storehouse is vented
To pond, experiment terminates.
Relative to existing research, beneficial effects of the present invention are as follows:
(1), the present apparatus can simulate to obtain under certain temperature, pressure condition in bubble flow the formation of hydrate and each
The accumulation process of hydrate at kind metallic conduit, and leaking for crude oil is prevented using obstruction of the hydrate at metallic conduit；
(2), by control gas injection rate and vertical liquid in pipe flow velocity come after analog study gas hydrate synthesis
The formation mechenism of metallic conduit adhesion and aggregation；
(3), the device of the technical program is easy to operate, is easy to observe, and feasibility is high；
(4), measurement method science, can be realized the parameter measurement of degree of precision；
(5), by storing image data in processing computer, it can analyze the water under gas with various flow velocity and flow rate of liquid
Object formation mechenism and the adhesion and aggregation process in various metallic conduits are closed, thus for the formation of gas hydrate under bubble flow
Effective supplemental characteristic is provided with blocking mechanism research.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of gas hydrate blocking mechanism imitative experimental appliance under bubble flow of the invention；
Fig. 2 is the structural schematic diagram in experiment simulation storehouse of the invention；
Fig. 3 is the structural schematic diagram that standpipe is combined in storehouse of the invention；
Fig. 4 is the portion the A enlarged drawing of this Fig. 3.
In figure: 1, Nitrogen source gases；2, gas booster pump；3, back pressure tank inlet control valve；4, back pressure tank；5, back pressure tank measures
Pressure gauge；6, safety valve；7, gas storage tank；8, gas injection control valve；10, gasmetry pressure gauge；11, smash is dynamic
Valve；12, form is illuminated；13, experiment simulation storehouse；131, circulating water intake pipe；132, emitting bubbles pipe；134, circulating water outlet
Pipe；136, divide half combination standpipe (the removable metallic conduit piece in side)；135, cooling water-circulating pipe；137, observation window；14, high
Fast video camera；15, computer；21, recirculated water outlet water control valve；28, circulating water flow meter；20, circulating pump；18, recirculated water into
Water control valve；16, drain valve；17, pond；22, water inlet control valve；23, intake pump；24, cooling sea water outlet valve；25, cooler
Group；26, cooling sea water inlet valve.
Specific embodiment
Embodiment 1:
With reference to the accompanying drawings and embodiments to gas hydrate blocking mechanism imitative experimental appliance under bubble flow of the invention
And method is described in further detail.
Gas hydrate blocking mechanism imitative experimental appliance includes: control pressurer system, gas under bubble flow of the invention
Injected system, experimental simulation system, cooling system, the circulatory system, culvert system, monitoring storage system；Wherein: pressure control
System, gas injection system, cooling system, the circulatory system, culvert system are all connected as experimental model with experimental simulation system
System service, in which: control pressurer system provides pressure for experimental model system, and gas injection system mentions for experimental model system
For injecting gas, experimental simulation system provides the metallic conduit environment that Hydrate Plugging is formed under simulated high-pressure, low temperature to test,
Cooling system provides required temperature environment for experimental model system, and the circulatory system provides simulation pipeline liquid for experimental model system
Body flowing environment, culvert system provide for experimental model system into the sewage discharge after dress liquid and experiment, and monitoring is deposited
The operating of storage system monitoring experiment model system simultaneously stores data.
Control pressurer system includes: Nitrogen source gases 1, gas booster pump 2, back pressure tank 4, Nitrogen source gases 1, gas booster pump 2,
Back pressure tank 4 passes sequentially through pipeline and is connected, and the connected pipeline of gas booster pump 2, back pressure tank 4 is equipped with back pressure tank inlet control valve 3.
Gas injection system includes: gas storage tank 7, gas injection control valve 8, smash dynamic valve 11, gas flowmeter；
Gas storage tank 7 is connected by pipeline with gas injection control valve 8, and gas injection control valve 8 and smash are moved and led between valve 11
It crosses pipeline to be connected, smash is moved on the pipeline connected between valve 11 and experimental simulation system equipped with gas flowmeter.
Experimental simulation system, comprising: experiment simulation storehouse 13, experiment simulation 13 upper and lower ends of storehouse sealing, top is provided with high pressure
Nitrogen injection hole, cooling water outlet, circulating water outlet, lower part are provided with gas injection hole, cooling water injection hole, recirculated water injection
Hole, test and have two column windows on the vertical direction of simulation 13 circumferential wall of storehouse: one is classified as two illumination forms 12, and one is classified as
Gas transmitting tube, circulating water intake pipe 131, gas transmitting tube and experiment mould are installed in observation window 137, experiment simulation 13 bottom end of storehouse
The gas injection hole connection of quasi- 12 lower part of storehouse, circulating water intake pipe 131 are connected with the circulating water intake of experiment simulation 13 lower part of storehouse
It connecing, all around around cooling water-circulating pipe 135 in experiment simulation storehouse 13, cooling 135 upper end of water-circulating pipe is connected with cooling water outlet,
Lower end is connected with cooling water inlet, and a point of half combination standpipe 136 is erect in experiment simulation storehouse 13, under point half combination standpipe 136
Surrounding aperture is held, a half point half combines standpipe face observation window 137 and is set as transparent, with card on the other half standpipe
Slot, the lower part of point half combination standpipe 136 are provided with recirculated water into hole, and gas transmitting tube is at point half combination standpipe lower central；
Back pressure tank 4 is connect by pipeline with safety valve 6, and safety valve 6 is injected by the high pressure nitrogen of pipeline and experiment simulation 13 top of storehouse
Hole is connected, and the pipeline that back pressure tank 4 is connected with safety valve 6 is equipped with back pressure tank and measures pressure gauge 5.
Cooling system includes: cooling sea water outlet valve 24, cooling unit 25, cooling sea water inlet valve 26, thermometer；Cooling water goes out
Mouth valve 24, cooling sea water inlet valve 26 are connected with cooling unit 25 by pipeline, on cooling sea water outlet valve 24 and experiment simulation storehouse 13
Portion's cooling water outlet is connected by pipeline, and cooling sea water inlet valve 26 passes through pipeline phase with experiment simulation 13 lower part cooling water inlet of storehouse
Even, thermometer is housed on pipeline.
The circulatory system includes: recirculated water outlet water control valve 21, circulating pump 20, recirculated water water inlet control valve 18, flowmeter；It is real
Test simulation 13 top of storehouse circulating water outlet and recirculated water outlet water control valve 21, recirculated water outlet water control valve 21 and circulating pump 20,
Recirculated water water inlet control valve 18 passes sequentially through pipeline with the circulating water intake of circulating pump 20, experiment simulation 13 lower part of storehouse and is connected, and follows
Flowmeter is housed on the pipeline that ring water outlet water control valve 21 is connected with circulating pump 20.
Culvert system includes: water inlet control valve 22, intake pump 23, pond 17, drain valve 16；Water inlet control valve 22, into
Water pump 23, pond 17, drain valve 16 pass sequentially through pipeline and are connected, and water inlet control valve 22 is connected to recirculated water by pipeline and goes out water control
On the pipeline that valve 18 processed is connected with the circulating water outlet on experiment simulation 13 top of storehouse, drain valve 16 is connected to recirculated water by pipeline
On the pipeline that water inlet control valve 18 is connected with the circulating water intake of experiment simulation 13 lower part of storehouse.
Upper flange and lower flange is respectively set in experiment simulation 13 top and bottom of storehouse.
Monitoring storage system includes high-speed camera 14 and computer 15, and high-speed camera 14 is connected with computer, high speed
The alignment lens observation window 137 of video camera 14.
Simulation blister of the invention flows down gas hydrate blocking mechanism analogue experiment method, utilizes above-mentioned simulation blister
Gas hydrate blocking mechanism imitative experimental appliance is flowed down, steps are as follows:
(1), the Preparatory work of experiment stage:
The upper flange for opening experiment simulation storehouse 13, extracts the half-covering tube for having card slot, face, which is loaded onto, upwards in turn is beforehand with
Good metallic conduit sample, puts back to after installing, and guarantee coincide with the other half, screws upper flange, closed safe valve 6, recirculated water
Water inlet control valve 18, circulating water outlet control valve 21, blowdown valve 16, smash move valve 11, open water inlet control valve 22, start into
Water pump 23, liquid needed for being injected into experiment simulation storehouse 13, until liquid level floods circulating water pipeline outlet, then
Water inlet control valve 22 is closed, intake pump 23 is opened cooling sea water inlet valve 26 and cooling sea water outlet valve 24, allowed through water cooler 25
Cold water after the refrigeration circulation in experimental simulation device makes the temperature in experiment simulation storehouse 13 reach experiment required temperature,
Recirculated water outlet water control valve 21 and recirculated water water inlet control valve 18 are opened, circulating pump 20 is started, guarantees to divide in 13 storehouse of simulated experiment
Liquid flowing in half combination standpipe 136.
Cooling circulating water has reached experiment required temperature in experiment simulation storehouse 13, circulates water holding in device,
Experiment cooling sea water outlet valve 24 and cooling sea water inlet valve 26 is kept to open；Open the back pressure between gas booster pump 2 and back pressure tank 4
Tank inlet control valve 3, starting gas booster pump 2 are started to work, and the pressure of back pressure tank 4 is read from back pressure tank measurement pressure gauge 5, to
After pressure reaches pressure needed for operating condition of test in back pressure tank 4, back pressure tank inlet control valve 3 is closed, gas booster pump 2 is closed, beats
Open safety valve 6；Light source is opened, from the polishing into experiment simulation storehouse 13 of illumination form 12, starts high-speed camera 14 and computer
15, guarantee that high-speed camera 14 is directed at observation window 137；Preparatory work of experiment terminates；
(3), the progress stage is tested:
When temperature reaches experiment set temperature in experiment simulation storehouse 13, gas injection control valve 8 is opened, is then opened high
Pressure ball moves valve 11, controls gas flowmeter flow, starts gas hydrate blocking mechanism simulated experiment under bubble flow, to experiment mould
Being divided to injection gas in half combination standpipe 136 while high-speed camera 14 being used to capture bubble automatically in two different gold in quasi- storehouse 13
The formation of metal conduit on piece hydrate and aggregation blocking, gas flow is certain, and circulating water flow is certain, and observes gold
Until metal conduit has gas hydrate synthesis, an experimentation terminates, and the image data that high-speed camera 14 is captured passes through data line
Computer is passed to be stored；
(3), the blowdown stage is tested:
Cooling device is first closed, the smash for closing experiment simulation 13 lower end of storehouse moves valve 11, recirculated water water inlet control valve 18
With recirculated water outlet water control valve 21, the drain valve 16 of experiment simulation 13 lower end of storehouse is opened, after once testing in experiment simulation storehouse
Sewage be vented to pond 17, experiment terminates.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (8)
1. gas hydrate blocking mechanism imitative experimental appliance under a kind of bubble flow, it is characterised in that: include: pressure control system
System, gas injection system, experimental simulation system, cooling system, the circulatory system, culvert system, monitoring storage system；Wherein:
Control pressurer system, gas injection system, cooling system, the circulatory system, culvert system, monitoring storage system all with experiment mould
Quasi- system is connected as experimental simulation system service, in which:
Control pressurer system provides pressure for experimental model system；
Gas injection system provides injection gas for experimental model system；
Experimental simulation system provides the metallic conduit environment that Hydrate Plugging is formed under simulated high-pressure, low temperature to test, and tests mould
Quasi- system includes: experiment simulation storehouse, and experiment simulation storehouse upper and lower ends sealing, top is provided with high pressure nitrogen injection hole, cooling water goes out
Mouth, circulating water outlet, lower part are provided with gas injection hole, cooling water injection hole, recirculated water injection hole, experiment simulation storehouse circumferential wall
Two column windows are had on vertical direction: one is classified as two illumination forms, and one is classified as observation window, experiment simulation orlop end peace
Fill gas transmitting tube, circulating water intake pipe, gas transmitting tube with experiment simulate storehouse lower part gas injection hole connect, recirculated water into
Mouth pipe is connected with the circulating water intake of experiment simulation storehouse lower part, and experiment is simulated all around around cooling water-circulating pipe in storehouse, cooling
Water-circulating pipe upper end is connected with cooling water outlet, and lower end is connected with cooling water inlet, and experiment simulation erects one piece point half group in storehouse
Standpipe is closed, point half combination lower riser end surrounding aperture, a half point half combines standpipe face observation window and is set as transparent, another
Card slot is had on half standpipe, the various metallic conduit samples of well in advance are installed in face upwards in turn, under point half combination standpipe
Portion is provided with recirculated water into hole, and gas transmitting tube is at point half combination standpipe lower central；Back pressure tank passes through pipeline and safety valve
Connection, safety valve are connected by pipeline with the high pressure nitrogen injection hole at experiment simulation silo roof end, what back pressure tank was connected with safety valve
Pipeline is equipped with back pressure tank and measures pressure gauge；
Cooling system provides required temperature environment for experimental model system, and cooling system includes: cooling sea water outlet valve, cooler
Group, cooling sea water inlet valve, thermometer；Cooling sea water outlet valve, cooling sea water inlet valve are connected with cooling unit by pipeline, cooling water
Outlet valve is connected with experiment simulation storehouse top cooling water outlet by pipeline, and cooling sea water inlet valve and experiment simulation storehouse lower part are cooling
Water inlet is connected by pipeline, and thermometer is housed on pipeline；
The circulatory system provides simulation pipeline liquid flowing environment for experimental model system；
Culvert system provides for experimental model system into the sewage discharge after dress liquid and experiment；
It monitors the operating of storage system monitoring experiment model system and stores data.
2. gas hydrate blocking mechanism imitative experimental appliance under bubble flow according to claim 1, it is characterised in that: pressure
Force control system includes: Nitrogen source gases, gas booster pump, back pressure tank, and Nitrogen source gases, gas booster pump, back pressure tank pass sequentially through
Pipeline is connected, and the connected pipeline of gas booster pump, back pressure tank is equipped with back pressure tank inlet control valve.
3. gas hydrate blocking mechanism imitative experimental appliance, feature exist under bubble flow according to claim 1 or 2
In: gas injection system includes: gas storage tank, gas injection control valve, smash dynamic valve, gas flowmeter；Gas storage
Tank is connected by pipeline with gas injection control valve, and gas injection control valve is moved with smash to be connected between valve by pipeline, high
Pressure ball moves on the pipeline connected between valve and experimental simulation system equipped with gas flowmeter.
4. gas hydrate blocking mechanism imitative experimental appliance under bubble flow according to claim 1 or claim 2, it is characterised in that:
The circulatory system includes: recirculated water outlet water control valve, circulating pump, recirculated water water inlet control valve, flowmeter；Experiment simulation storehouse top
Circulating water outlet and recirculated water outlet water control valve, recirculated water outlet water control valve and circulating pump, recirculated water water inlet control valve and circulation
The circulating water intake that pump, experiment simulate storehouse lower part passes sequentially through pipeline and is connected, what recirculated water outlet water control valve was connected with circulating pump
Flowmeter is housed on pipeline.
5. gas hydrate blocking mechanism imitative experimental appliance, feature exist under bubble flow according to claim 1 or 2
In: culvert system includes: water inlet control valve, intake pump, pond, drain valve；Water inlet control valve, intake pump, pond, drain valve
It passes sequentially through pipeline to be connected, water inlet control valve is connected to recirculated water outlet water control valve by pipeline and simulates following for storehouse top with experiment
On the connected pipeline of ring water out, drain valve is connected to recirculated water water inlet control valve by pipeline and simulates following for storehouse lower part with experiment
On the connected pipeline of ring water inlet.
6. gas hydrate blocking mechanism imitative experimental appliance under bubble flow according to claim 1, it is characterised in that: real
It tests simulation storehouse top and bottom and upper flange and lower flange is respectively set.
7. gas hydrate blocking mechanism imitative experimental appliance under bubble flow according to claim 1, it is characterised in that: prison
Controlled storage system includes high-speed camera and computer, and high-speed camera is connected with computer, the alignment lens of high-speed camera
Observation window.
8. a kind of simulation blister flows down gas hydrate blocking mechanism analogue experiment method, which is characterized in that utilize claim
The described in any item simulation blisters of 1-7 flow down gas hydrate blocking mechanism imitative experimental appliance, and steps are as follows:
(1), the Preparatory work of experiment stage:
The upper flange for opening experiment simulation storehouse, extracts the half-covering tube for having card slot, the gold of well in advance is loaded onto face upwards in turn
Metal conduit sample is put back to after installing, and guarantee coincide with the other half, screws upper flange, closed safe valve, recirculated water water inlet control
Valve, circulating water outlet control valve, blowdown valve, smash move valve, open water inlet control valve, start intake pump, simulate storehouse to experiment
Liquid needed for interior injection is then shut off water inlet control valve until liquid level floods circulating water pipeline outlet, intakes
Pump opens cooling sea water inlet valve and cooling sea water outlet valve, allows the cold water after freezing by water cooler in experimental simulation device
Circulation makes the temperature in experiment simulation storehouse reach experiment required temperature, open recirculated water outlet water control valve and recirculated water into
Water control valve starts circulating pump, guarantees the liquid flowing in simulated experiment storehouse in point half combination standpipe；
Cooling circulating water has reached experiment required temperature in experiment simulation storehouse, circulates water holding in device, keeps real
It tests cooling sea water outlet valve and cooling sea water inlet valve is opened；Open the back pressure tank in-let dimple between gas booster pump and back pressure tank
Valve, starting gas booster pump are started to work, and the pressure of back pressure tank is read from back pressure tank measurement pressure gauge, is reached to back pressure pressure inside the tank
To after pressure needed for operating condition of test, back pressure tank inlet control valve is closed, gas booster pump is closed, opens the safety-valve；Light source is opened,
From the polishing into experiment simulation storehouse of illumination form, start high-speed camera and computer, guarantees high-speed camera alignment observation view
Window；Preparatory work of experiment terminates；
(2), the progress stage is tested:
When temperature reaches experiment set temperature in experiment simulation storehouse, gas injection control valve is opened, it is dynamic then to open smash
Valve controls gas flowmeter flow, starts gas hydrate blocking mechanism simulated experiment under bubble flow, into experiment simulation storehouse
It is divided in half combination standpipe to inject gas while capturing bubble automatically with high-speed camera and is hydrated on two different metal confusers
The formation of object and aggregation blocking, gas flow is certain, and circulating water flow is certain, and observes that metallic conduit has hydrate
Until formation, an experimentation terminates, and the image data that high-speed camera is captured passes to computer by data line and deposited
Storage；
(3), the blowdown stage is tested:
Cooling device is first closed, the smash for closing experiment simulation storehouse lower end is moved valve, recirculated water water inlet control valve and recirculated water and gone out
Water control valve opens the drain valve of experiment simulation storehouse lower end, and the sewage after primary experiment in experiment simulation storehouse is vented to pond,
Experiment terminates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710116610.1A CN106908446B (en) | 2017-03-01 | 2017-03-01 | Gas hydrate choking mechanism imitative experimental appliance and method under bubble flow |
Applications Claiming Priority (1)
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