CN207689470U - A kind of methane hydrate balances each other the High-Voltage Experimentation device of research - Google Patents
A kind of methane hydrate balances each other the High-Voltage Experimentation device of research Download PDFInfo
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Abstract
The utility model provides the High-Voltage Experimentation device that a kind of methane hydrate balances each other research, experimental provision includes methane hydrate reaction kettle, constant temperature oil bath device, methane air source, aerometer gauge, the hydrate reaction kettle is placed in constant temperature oil bath device, the hydrate reaction kettle is separately connected precision pressure gauge, air inlet pipeline, outlet pipe by four-way, methane air source is set on the air inlet pipeline, aerometer gauge is set on the outlet pipe.Methane booster pump, air intake valve, emptying valve are also set up on the air inlet pipeline, are also set up on the outlet pipe and are taken air valve.The utility model can be in wider pressure and temperature range, precise control of temperature and pressure condition, realizes formation and decomposition experiment of the methane hydrate under equilibrium state or near-equilibrium state, phase balance condition of the accurate research in methane hydrate.
Description
Technical field
The utility model is related to a kind of experimental provision, especially a kind of methane hydrate balance each other research High-Voltage Experimentation dress
It sets.
Background technology
From the 1930s, since gas hydrates are concerned because blocking gas pipeline, successively carry out a large amount of
Methane hydrate experimental study.Methane hydrate is a kind of crystalloid solid-state being made of hydrone and hydrocarbon gas molecule etc.
Compound.Its shape is similar to ice, usually white.In the crystalline solid of this ice-like, hydrone forms polyhedron skeleton, bone
Hole can be occupied by gas molecule among frame.In ocean deepwater area and land tundra stratum, contain a large amount of first
Alkane hydrate resource, world energy sources situation is increasingly severe, a kind of cleaning energy of the methane hydrate kind natural gas as rich reserves
Source is increasingly becoming main energy sources very important in primary energy, therefore, specifies the formation condition and mechanism of methane hydrate
It is the premise for effectively instructing combustible ice to explore.Since the greenhouse effects of methane are much larger than carbon dioxide, in the process of development
If improper measures lead to the equilibrium condition of methane hydrate under extensive damage stratum, that will promote a large amount of methane gas into
Enter air, tremendous influence will be generated to Global climate change.Additionally, due to industry and civil natural gas air source generally away from
From with gas key city and enterprise farther out, it is natural gas is safe, continuous and efficient to be conveyed to user be that natural gas resource utilizes
An important link.Using gas hydrate method progress natural gas Storage And Transportation In Solid State is low with economic cost, gas-storing capacity is big, peace
Entirely, the remarkable advantages such as environmental protection.The formation of methane hydrate the Temperature-pressure Conditions such as is stabilized, decomposes concerning the flammable of energy field
Ice is explored and the problems such as pipeline is defeated of exploitation, natural gas, the research that balances each other of methane hydrate be then research its formed, point
The basic research means of the researchs such as solution and stability.
It is the prior art that methane hydrate (or gas hydrates, solvable ice), which synthesizes and decompose research,.
Application number：201310364274.4 publication date：2013-12-25 discloses a kind of gas hydrates simulated experiment
Device, the analogue experiment installation include longitudinal consersion unit and lateral consersion unit, are connected in longitudinal consersion unit and are equipped with indigo plant
Jewel reaction kettle；Sapphire reaction kettle side is correspondingly arranged visualization device；Longitudinal consersion unit, lateral consersion unit and indigo plant are precious
Stone reaction kettle is equipped with temperature gradient control layer and probe measuring system；Probe measuring system is connected with data acquisition process system
System；Longitudinal consersion unit bottom is equipped with air inlet, supercharging and discharge pipe line.The analogue experiment installation can realize that temperature is presented in container
Gradient is distributed, hydrate local interval synthesis in a reservoir；Gas from vessel bottom inflow is migrated upwards with diffusion way, can be had
It imitates simulation gas hydrate synthesis and decomposes；It can measuring temperature, pressure distribution and hydrate concentration variation in real time；It can carry out
The influence research of simulation is exploited in mass transport process；Further the formation rule of understanding hydrate, hydrate layer mass transfer and decomposition rule
Rule.
Application number：201510076217.5 it is heavy that publication date 2015-05-20 discloses a kind of high saturation methane hydrate
The generating means and generation method of product object sample comprising mold, mould inside have the cavity of setting piston, piston base
The receiving area for generating deposit sample is formed with cavity；It is provided with thermocouple in mould cavity, thermocouple will detect
Temperature information is transmitted to computer control system through data collecting system；Mold exterior is disposed with clamper and heat exchanger,
Mold, piston, clamper and heat exchanger form reactor main body；Reactor main body bottom is provided with air accumulator circuit, methane gas
Body inflation circuit vacuumizes circuit and pressure detecting circuit, and methane gas inflation circuit and air accumulator circuit vacuumize circuit simultaneously
After connection, it is connected to mould cavity bottom through pressure detecting circuit；The gas vent of piston is connected in parallel tail gas by connecting line and receives
Collect circuit, gas exhaust piping and tail gas pressure control conduit.The utility model can be surveyed in gas hydrates Basic Physical Properties extensively
Amount is applied in field.
Application number：201410140795.6 publication date：2014-06-18 discloses a kind of combustible ice self-organizing production dress
It sets.The combustible ice self-organizing process units includes transparent column cavity, transparent autoclave, porous ceramics with pedestal
Stick, reservoir, temperature control device, pressure-control valve, vibrating device, temperature and pressure digital display meter and function selection key.In set temperature, pressure
Under the conditions of power, it is passed through the high pressure saturated solution of natural gas and water to the sprue of reaction kettle, self-organizing life on porous ceramics stick in kettle
At flammable ice crystal, the flammable ice crystal of synthesis is imported in reservoir and encapsulated by the effect of gravity and vibrating device, so
Automatic spring afterwards completes the production of combustible ice.The characteristics of the utility model, is that, by setting reaction environment, which can be fully
Simulated sea bottom porous media promotes hydrone formation cage structure that methane molecule tight gets up, and organizing the formation of automatically has
The crystalline compounds of cagelike structure, and the finished product for being packaged into and can direct plungeing into and using is automatically extracted, it is simple in structure, it is convenient and reliable,
Physical chemistry morphological research and realization industrial production to combustible ice are of great significance.
Application number：201410578211.3 publication date：2015-05-20 discloses a kind of experimental rig, specially naturally
Gas hydrate experimental loop device, including reaction kettle, gas cylinder, water tank and voltage-stablizer, gas cylinder pass through compressor and reactor bottom
Gas phase entrance connects, and gas cylinder is also connect with voltage-stablizer, and the gas vent of voltage-stablizer is connect with reactor bottom gas phase entrance, water tank
It is connect respectively with the liquid phase entrance of voltage-stablizer and reaction kettle；The gas phase entrance of reaction kettle is with the outlet of reaction kettle top gas phase by following
The liquid-phase outlet of ring pipeline connection, reaction kettle is connect with circulating pump, horizontal segment visual window and vertical section visual window successively, is returned
Reactor bottom liquid phase entrance；The circulating-pump outlet is also connect with the gas phase loop head of reaction kettle.The utility model carries
The gas hydrates experimental loop device of confession can be used for the synthesis of gas hydrates, decompose and the research that balances each other, ocean day
The so defeated characteristic research of gas hydrate solid state fluidizing exploitation pipe, the research of gas hydrates storaging and transport technology.
Application number：201420278371.1 publication date：2014-10-29 disclose a kind of simulated sea bottom combustible ice generate and
The experimental provision of exploitation, it is by stainless steel cylinder body, middle part infiltration plate, bottom rubber pneumatic bag, top seal and external frame
Frame forms；Cylinder body is divided into three parts by whole device by the infiltration plate at middle part, can distinguish simulated seawater layer, sedimentary from top to bottom
(hydrate layer) and free gas-bearing formation；The front-back of cylinder body has separately designed 3 windows, when generating and decompose convenient for observation hydrate
The phenomenon that；The sealing device at top uses combined machine sealing means, it is ensured that the sealing effect of device；Combustible ice reservoir can be with
Empirically design controls its void ratio；Magnetizer induction heating temperature controller is surrounded by around combustible ice reservoir, it can be accurate
Control temperature realize heating to reservoir.Conventional lanthanum chloride hydrate and decomposition experiment not only may be implemented in the utility model,
Large scale simulated sea bottom hydrate, the especially generation of leakage type hydrate and recovery process may be implemented simultaneously, can also make
The phenomenon in synthesis and recovery process is recorded with high-speed CCD camera, realizes the visualization of simulation.
Application number：201510613624.5 publication date：2016-02-17 discloses gas hydrate mould in a kind of porous media
Draft experiment test method, main includes the steps that the step of experiment is with measurement data acquisition and measuring signal analyzing processing；Tool
Body is gas hydrate to be generated in the porous media of reaction kettle, and gradually raise the temperature, and gas hydrate is decomposed, in decomposable process
Temperature, pressure, electricity and the acoustic signal for acquiring different test points, according to temperature and pressure calculate gas hydrate saturation degree,
The gas hydrate saturation degree model based on acoustics, electrology characteristic harmony electro' asion characteristic, the acoustoelectric combined test are established respectively
Method, signals security is radiationless, system interference it is small, for explore gas hydrates generation/decomposable process dynamic law with
And the spatial distribution state change rule of each phase substance provides effective Detection Techniques means in porous media, while being also exploitation
New logging technique is provided fundamental basis.
By retrieving methane hydrate, gas hydrates, combustible ice, device and the keywords such as balance each other, it is possible to find, mesh
The preceding equipment for being used to study the research of methane hydrate Forming Mechanism or technological means include mainly：First is observed using glass vision panel etc.
The formation of alkane gas hydrate synthesis and experimental provision, using in-situ Raman spectral technique analyze methane in natural fluid inclusion enclave
The generation of hydrate and the experimental provision of decomposition condition observe the reality that methane is hydrated to form and decomposes using CT layer scanning technologies
The combustible ice process units etc. of experiment device and other low temperature.These device and methods are generally unsuitable for methane hydrate phase
The basic research of balance, the reason is as follows that：To realize effect of visualization, generally to require the formation of methane hydrate or decompose
Journey is very fast, thus methane hydrate formation or decomposable process be all to occur under the nonequilibrium state for being subcooled or overheating, it is uncomfortable
Together in the accurate determination for the state of balancing each other.In addition, the pressure and temperature of these experimental provisions are relatively narrow suitable for range, general pressure
In 10MPa hereinafter, temperature at 10 DEG C hereinafter, being not suitable for the research that balances each other in elevated pressures and wide temperature range.
Utility model content
The purpose of this utility model is to provide a kind of methane hydrate and balances each other the High-Voltage Experimentation device of research, can compare
In wide pressure and temperature range, precise control of temperature and pressure condition realize methane hydrate in equilibrium state or near-equilibrium state
Under formation and decomposition experiment, phase balance condition of the accurate research in methane hydrate.
The purpose of this utility model can be achieved by the following technical measures：
The methane hydrate balances each other the High-Voltage Experimentation device of research, including methane hydrate reaction kettle, constant temperature oil bath dress
It sets, methane air source, aerometer gauge, the hydrate reaction kettle is placed in constant temperature oil bath device, and the hydrate reaction kettle is logical
Cross four-way and be separately connected precision pressure gauge, air inlet pipeline, outlet pipe, methane air source is set on the air inlet pipeline, it is described go out
Aerometer gauge is set on air pipe.
The purpose of this utility model can be also achieved by the following technical measures：
Methane booster pump, air intake valve, emptying valve are also set up on the air inlet pipeline, the air intake valve is arranged four
Lead between methane booster pump, the emptying valve is arranged between four-way and air intake valve, is also set up on the outlet pipe
Air valve is taken, it is described that air valve is taken to be arranged between four-way and gas quantifier.
The methane hydrate reaction kettle includes autoclave body, kettle cover, places sample container in the autoclave body, the kettle cover passes through
High-intensity sealing screw and high-intensity sealing nut are fixed on autoclave body upper port, and there are venthole, venthole installations among kettle cover
Kettle cover adapter, kettle cover adapter connect four-way.
The autoclave body upper port inner wall opens up interior land groove, and high-pressure seal ring, the kettle cover is arranged in the interior recessed grain of land
Lower surface opens up corresponding outer lug boss, and outer lug boss is pressed in interior land inside grooves and compresses high-pressure seal ring.
The autoclave body inner surface is the processed high pressure resistant metal material of polishing, and the kettle cover is identical as body material, interior
Polishing processing was done on surface, and the sample container is the inert metal material of surface polishing processing.
The constant temperature oil bath device includes oily torus, oil bath insulating layer, oil bath temperature control circulator, oil circulating pipe, described
Oil bath temperature control circulator connects oily torus by oil circulating pipe, and the oil bath insulating layer is enclosed in outside oily torus.
The oil torus is wrapped in except methane hydrate reaction kettle, the gap location between oily torus and autoclave body,
Equipped with filling and regenerative block.
There are jacks for the filling and regenerative block lower part, for being inserted into temperature sensor.
The utility model has the advantages that compared with prior art：
The High-Voltage Experimentation device that the methane hydrate balances each other this temperature of reaction kettle, temperature accurately controlled using constant temperature oil bath
Control range is wider, and between -20 DEG C -50 DEG C, precision is ± 0.1 DEG C.Operating pressure is 0-70MPa, can be used for studying most of
Methane at temperature and pressure condition balances each other.In method, before methane excess, methane is injected using repeatedly accurately controlling
Initial pressure repeatedly observes pressure reduction curve, and pressure is balanced come methane when determining water excess.After methane excess, by multiple
Initial pressure in kettle is accurately reduced by a small margin, and observes pressure rise curve, to determine vapor pressure.The dynamic approach determines
Phase equilibrium (vapor pressure) greatly reduces systematic error, as a result more accurate.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model embodiment；
Fig. 2 is methane hydrate reaction kettle structural schematic diagram in Fig. 1.
In figure：1, methane hydrate reaction kettle, 11, autoclave body, 12, kettle cover, 13, high-pressure seal ring, 14, sample container, 15
Kettle cover adapter, 16, high-intensity sealing screw, 17, high-intensity sealing nut, 2, constant temperature oil bath device, 21, oily torus, 22,
Filling and regenerative block, 23, oil bath insulating layer, 24, temperature sensor, 25, oil bath temperature control circulator, 26, oil circulating pipe, 3, accurate
Pressure gauge, 4, air intake valve, 5, emptying valve, 6, take air valve, 7, methane air source, 8, methane booster pump, 9, aerometer gauge.
Specific implementation mode
Detailed description in relation to the utility model and technology contents, cooperation description of the drawings is as follows, however attached drawing is only to refer to
With purposes of discussion, not it is used for limiting the utility model.
As shown in attached drawing 1, Fig. 2, a kind of methane hydrate balances each other the High-Voltage Experimentation device of research, including methane hydrate
Reaction kettle 1, constant temperature oil bath device 2, methane air source 7, aerometer gauge 9, the hydrate reaction kettle are placed in constant temperature oil bath device
In, the hydrate reaction kettle is separately connected precision pressure gauge 3, air inlet pipeline, outlet pipe, the air inlet pipeline by four-way
Upper setting methane air source 7, setting aerometer gauge 9 on the outlet pipe.Methane booster pump is also set up on the air inlet pipeline
8, air intake valve 4, emptying valve 5, the air intake valve are arranged between four-way and methane booster pump, the emptying valve setting
Between four-way and air intake valve, is also set up on the outlet pipe and take air valve 6, it is described to take air valve setting gentle in four-way
Between body quantifier.
The methane hydrate reaction kettle 1 includes autoclave body 11, kettle cover 12, high-pressure seal ring 13, sample container 14, kettle cover turn
Connector 15, high-intensity sealing screw 16, high-intensity sealing nut 17.Sample container is placed in the autoclave body, the kettle cover passes through
High-intensity sealing screw and high-intensity sealing nut are fixed on autoclave body upper port, and there are venthole, venthole installations among kettle cover
Kettle cover adapter, kettle cover adapter connect four-way.The autoclave body upper port inner wall opens up interior land groove, is set in the interior recessed grain of land
High-pressure seal ring is set, the kettle cover lower surface opens up corresponding outer lug boss, and outer lug boss is pressed in interior land inside grooves and compresses height
Pressure seal ring.The autoclave body inner surface is the processed high pressure resistant metal material of polishing, and the kettle cover is identical as body material, interior
Polishing processing was done on surface, and the sample container is the inert metal material of surface polishing processing.
The constant temperature oil bath device 2 includes oily torus 21, filling and regenerative block 22, oil bath insulating layer 23, temperature sensing
Device 24, oil bath temperature control circulator 25, oil circulating pipe 26.The oil bath temperature control circulator connects oily torus by oil circulating pipe,
The oil bath insulating layer is enclosed in outside oily torus.The oil torus is wrapped in except methane hydrate reaction kettle, in oil
Gap location between torus and autoclave body, equipped with filling and regenerative block.There are jacks for the filling and regenerative block lower part, for inserting
Enter temperature sensor.
For the precision pressure gauge measurement range between 0~80MPa, pressure precision is better than 0.001MPa.
The methane hydrate reaction kettle autoclave body inner cavity is drum type, and autoclave body is the processed high pressure resistant gold of inner surface polishing
Belong to material, there is groove at autoclave body upper opening, for placing high-pressure seal ring, there are circular holes for autoclave body upper outside, for pacifying
Fill high-intensity sealing screw.Autoclave body can be born and sealed pressure power 100MPa.
Kettle cover lower part is cylinder, when installation, gos deep into autoclave body cavity, for fixing and compressing high-pressure seal ring.In kettle cover
Between there are ventholes.Kettle cover can be born and sealed pressure 100MPa.
The high-pressure seal ring is " O " type sealing ring, and material is caulking gum, macromolecule or is that the good inertia of ductility is close
Seal metal, salable live in pressure 70MPa.
The high-intensity sealing screw and high-intensity sealing nut are connected and fixed kettle cover and autoclave body, are compressed by tightening way
High-pressure seal ring realizes the sealing to methane hydrate reaction kettle.
The oil torus is the drum type hollow container of upper opening, and inside circulates cooling/heating oil, for giving
Methane hydrate reaction kettle refrigerating/heating, control methane hydrate temperature of reaction kettle fluctuation is between ± 0.1 DEG C.
Filling and regenerative block, for buffering stable methane hydrate temperature of reaction kettle variation.
The oil bath temperature control circulator can pass through control external temperature mode control for giving cryostat medium refrigerating/heating
For the temperature of liquefaction torus and methane hydrate reaction kettle between -20 DEG C -50 DEG C, precision is ± 0.1 DEG C.
Cryostat/heating oil in the oil bath temperature control circulator is low condensation point, low viscosity higher boiling artificial oil, operating temperature
It is -40-100 DEG C.
The methane booster pump is used for methane air source pressurizing, and methane gas constant pressure is injected methane hydrate reaction kettle
In, for methane booster pump operating pressure between 0-80MPa, pressure controling precision is better than 10KPa.
The emptying valve is connected between air intake valve and methane hydrate reaction kettle, for releasing methane hydrate
The extra gas injected in reaction kettle, emptying speed can be finely adjusted.
The methane tolerance that the aerometer gauge is used to generate in methane hydrate decomposable process, measurement accuracy are better than
0.001 milliliter.
Sample (pure water, brine, ice etc.) is placed in sample container 14, is packed into methane hydrate reaction kettle 1.Methane is hydrated
Object reaction kettle 1 is placed in constant temperature oil bath device 2.Methane hydrate reaction kettle 1 is connected with high pressure line by kettle cover adapter 15, should
High pressure line and it is connected with four-way, the other three interface of four-way is connected separately with precision pressure gauge 3, methane by high pressure line
Hydrate reaction kettle entrance gas circuit and methane hydrate reaction kettle export gas circuit.
1 entrance gas circuit of methane hydrate reaction kettle is connected with methane air source 7, methane booster pump 8,4 and of air intake valve in turn
It is vented valve 5.The outlet of methane hydrate reaction kettle 1 gas circuit, which has been sequentially connected in series, takes air valve 6 and gas quantifier 9.
Methane hydrate balances each other the experimental method of research, and step is：
Step 1 is packed into sample, attachment device.A certain amount of laboratory sample (pure water, brine or ice etc.) is packed into sample
Container 14 places into methane hydrate reaction kettle 1, and seals reaction kettle.All parts and attachment are connected by 1 flow chart of attached drawing.
Step 2, the interior evacuation of device and gas displacement.Vacuum pump is connected to emptying valve 5 to export, closing takes air valve
6, air intake valve 4 and emptying valve 5 are opened, certain time is vacuumized.It is then shut off emptying valve 5, it is normal by methane booster pump 8
Pressure is filled with methane, after standing a period of time, then with vacuum pump depletion.It is repeated several times and vacuumizes and normal pressure fills methane process, displacement
The other gases for going out device, dissolving in pipeline and in sample, close emptying valve 5, unload vacuum pump.
Step 3, is arranged and controls the research temperature that balances each other, and it is anti-that methane hydrate is arranged using oil bath temperature control circulator 25
1 temperature of kettle is answered, 1 temperature of methane hydrate reaction kettle is detected with temperature sensor 24.By adjusting oil bath temperature control circulator 25
Oily rate of circulating flow and temperature setting control 1 temperature of methane hydrate reaction kettle to required temperature numerical value.
Step 4 is repeatedly injected methane gas, observed pressure variation.By methane booster pump 8 by the first in methane air source 7
Alkane gas is injected into methane hydrate reaction kettle 1, closes air intake valve 4.Pressure is detected with precision pressure gauge and records pressure
Change curve carries out note next time when pressure no longer changes or pressure change is less than a certain numerical value within a certain period of time
Enter methane and record pressure history process.It is repeatedly injected methane and record pressure history process, control is noted each time
Enter slightly higher certain numerical value (such as 0.2MPa, depending on actual temp) when pressure value is than last pressure stability after methane.
Step 5, balance each other a determination during continuous gas injection.After injecting methane twice in succession or more than twice, stand
Pressure reaches same numerical value after stabilization, or injects pressure value difference after pressure of methane is stablized twice in succession or more than twice and be less than
When a certain numerical value, illustrating to have reached equalization point, but water component is still excessive, steady pressure numerical value at this time is to balance pressure,
It is balance pressure 1 to record this pressure.
Step 6, overbalance point gas injection.Continue to be repeatedly injected methane, observe and records pressure history process.Work as note
After gas and pressure Wen Dinghou, pressure value is apparently higher than the vapor pressure that step 5 obtains, and gas injection pressure is steady each time
When numerical value after fixed is apparently higher than pressure stability numerical value after last gas injection, illustrate that methane has reached overbalance state.
Step 7, balance each other in deflation course a determination.A small amount of methane gas is released using emptying valve so that pressure is omited
Less than the obtained vapor pressure of step 5, and blow valve is closed, observe and records pressure build-up curve.It repeats to release a small amount of
Methane is observed and records pressure build-up curve process.After continuously releasing methane several times, when pressure is restored to a certain numerical value,
This numerical value is the vapor pressure measured by deflation course, is denoted as vapor pressure 2.Vapor pressure 1 and vapor pressure 2
Average value be determined as vapor pressure.
Step 8, injection methane to methane excess.Methane is gradually injected again, until the pressure after pressure stability is apparently higher than
Vapor pressure.
Step 9: methane and water ratio measuring in methane hydrate.It opens emptying valve 4 and quickly releases methane gas to normal
Pressure condition, and emptying valve 4 is closed rapidly, opening takes air valve 6 so that methane hydrate point in methane hydrate reaction kettle 1
Solution detects outflow methane gas amount with gas flowmeter 9.According to the amount of methane tolerance and sample container water (or ice), methane is calculated
The ratio of methane and water in hydrate.
11 inner cavity of methane hydrate reaction kettle autoclave body is drum type, and autoclave body is the processed high pressure resistant metal of inner surface polishing
Material has groove at 11 upper opening of autoclave body, and for placing high-pressure seal ring 13, there are circular holes for autoclave body upper outside, are used for
High-intensity sealing screw 16 is installed.Autoclave body can be born and sealed pressure power 100MPa.
Kettle cover 12 is identical as 11 material of autoclave body, and inner surface did polishing processing.12 lower part of kettle cover is cylinder, when installation,
Go deep into 11 cavity of autoclave body, for fixing and compressing high-pressure seal ring 13.There are ventholes among kettle cover.Kettle cover can bear and seal
Pressure 100MPa.
High-pressure seal ring 13 is " O " type sealing ring, and material is caulking gum or is the good inertia sealing metal of ductility, can
Seal up pressure 70MPa.
Sample container 14 be surface polishing processing inert metal material, for hold experiment needed for pure water, brine and
Ice etc..
High-intensity sealing screw 16 and high-intensity sealing nut 17 are connected and fixed kettle cover 12 and autoclave body 11, pass through tightening way
Compress sealing of the realization of high-pressure seal ring 13 to methane hydrate reaction kettle 1.
Oily torus 21 is the drum type hollow container of upper opening, and inside circulates cooling/heating oil, for first
1 refrigerating/heating of alkane hydrate reaction kettle, control methane hydrate temperature of reaction kettle fluctuation is between ± 0.1 DEG C
Oily torus 21 is wrapped in except methane hydrate reaction kettle 1, the gap between oily torus 21 and autoclave body 11
Place, equipped with filling and regenerative block 22, for buffering stable 1 temperature change of methane hydrate reaction kettle.
In filling and 22 lower part of regenerative block, there are jacks, for being inserted into temperature sensor 24.
Oily torus 21 is external oil bath insulating layer 23, is kept the temperature for oil supply torus 21.
Oil circulating pipe 25 is connected between oily torus 21 and oil circulating pump 24, for being recycled into oily torus 21
Cryostat/heating oil in oil bath temperature control circulator 25.
Oil bath temperature control circulator 25 can be controlled for giving cryostat medium refrigerating/heating by controlling external temperature mode
For the temperature of oily torus 21 and methane hydrate reaction kettle 1 between -20 DEG C -50 DEG C, precision is ± 0.1 DEG C.
Cryostat/heating oil in oil bath temperature control circulator 25 is low condensation point, low viscosity higher boiling artificial oil, operating temperature
It is -40-100 DEG C.
Methane booster pump 8 is used for methane air source pressurizing, and methane gas constant pressure is injected methane hydrate reaction kettle 1
In, for methane booster pump operating pressure between 0-80MPa, pressure controling precision is better than 10KPa.
Emptying valve 5 is connected between air intake valve 4 and methane hydrate reaction kettle 1, for releasing methane hydrate
The extra gas injected in reaction kettle 1, emptying speed can be finely adjusted.
The methane tolerance that aerometer gauge 9 is used to generate in methane hydrate decomposable process, measurement accuracy are better than 0.001
Milliliter.
The utility model can be in wider temperature and pressure limit, precise control of temperature and pressure condition, and uses
Dynamic method realizes formation and decomposable process of the methane hydrate under equilibrium state or near-equilibrium state.Phase is determined using the dynamic approach
Pressure is balanced, systematic error is greatly reduced, it is as a result more accurate.
The above is only the preferred embodiment of the present invention, non-to limit the scope of the claims of the utility model,
He uses the equivalence changes of the utility model patent spirit, should all belong to the scope of the claims of the utility model.
Claims (8)
- The High-Voltage Experimentation device of research 1. a kind of methane hydrate balances each other, which is characterized in that including methane hydrate reaction kettle, Constant temperature oil bath device, methane air source, aerometer gauge, the hydrate reaction kettle are placed in constant temperature oil bath device, the hydration Object reaction kettle is separately connected precision pressure gauge, air inlet pipeline, outlet pipe by four-way, and methane gas is arranged on the air inlet pipeline Aerometer gauge is arranged on the outlet pipe for source.
- The High-Voltage Experimentation device of research 2. a kind of methane hydrate according to claim 1 balances each other, which is characterized in that institute It states and also sets up methane booster pump, air intake valve, emptying valve on air inlet pipeline, the air intake valve setting increases in four-way and methane Between press pump, the emptying valve is arranged between four-way and air intake valve, is also set up on the outlet pipe and takes air valve, institute It states and air valve is taken to be arranged between four-way and gas quantifier.
- The High-Voltage Experimentation device of research 3. a kind of methane hydrate according to claim 1 or 2 balances each other, feature exist In the methane hydrate reaction kettle includes autoclave body, kettle cover, places sample container in the autoclave body, the kettle cover passes through high-strength Degree sealed screw and high-intensity sealing nut are fixed on autoclave body upper port, and there are ventholes, venthole to install kettle cover among kettle cover Adapter, kettle cover adapter connect four-way.
- The High-Voltage Experimentation device of research 4. a kind of methane hydrate according to claim 3 balances each other, which is characterized in that institute It states autoclave body upper port inner wall and opens up interior land groove, high-pressure seal ring is set in the interior recessed grain of land, the kettle cover lower surface opens up Corresponding outer lug boss, outer lug boss are pressed in interior land inside grooves and compress high-pressure seal ring.
- The High-Voltage Experimentation device of research 5. a kind of methane hydrate according to claim 3 balances each other, which is characterized in that institute It is the processed high pressure resistant metal material of polishing to state autoclave body inner surface, and the kettle cover is identical as body material, and inner surface, which was done, to be cutd open Light processing, the sample container are the inert metal material of surface polishing processing.
- The High-Voltage Experimentation device of research 6. a kind of methane hydrate according to claim 1 or 2 balances each other, feature exist In the constant temperature oil bath device includes oily torus, oil bath insulating layer, oil bath temperature control circulator, oil circulating pipe, the oil bath control Warm circulator connects oily torus by oil circulating pipe, and the oil bath insulating layer is enclosed in outside oily torus.
- The High-Voltage Experimentation device of research 7. a kind of methane hydrate according to claim 6 balances each other, which is characterized in that institute State oily torus to be wrapped in except methane hydrate reaction kettle, the gap location between oily torus and autoclave body, equipped with filling and Regenerative block.
- The High-Voltage Experimentation device of research 8. a kind of methane hydrate according to claim 7 balances each other, which is characterized in that institute Stating filling and regenerative block lower part, there are jacks, for being inserted into temperature sensor.
Priority Applications (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107703275A (en) * | 2017-11-13 | 2018-02-16 | 中国石油化工股份有限公司 | A kind of methane hydrate balances each other the High-Voltage Experimentation device and method of research |
| CN108993345A (en) * | 2018-09-18 | 2018-12-14 | 南方电网科学研究院有限责任公司 | Experiment platform for research and development of gas adsorbent |
| CN113062709A (en) * | 2021-04-19 | 2021-07-02 | 太原理工大学 | Method for exploiting natural gas hydrate by utilizing temperature and pressure in cooperation with step-by-step depressurization |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107703275A (en) * | 2017-11-13 | 2018-02-16 | 中国石油化工股份有限公司 | A kind of methane hydrate balances each other the High-Voltage Experimentation device and method of research |
| CN107703275B (en) * | 2017-11-13 | 2023-11-17 | 中国石油化工股份有限公司 | High-pressure experimental device and method for methane hydrate phase balance research |
| CN108993345A (en) * | 2018-09-18 | 2018-12-14 | 南方电网科学研究院有限责任公司 | Experiment platform for research and development of gas adsorbent |
| CN113062709A (en) * | 2021-04-19 | 2021-07-02 | 太原理工大学 | Method for exploiting natural gas hydrate by utilizing temperature and pressure in cooperation with step-by-step depressurization |
| CN113062709B (en) * | 2021-04-19 | 2022-06-28 | 太原理工大学 | Method for exploiting natural gas hydrate by utilizing temperature and pressure in cooperation with step-by-step depressurization |
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