CN201749096U - Thermal diffusion effect experiment device of natural gas hydrate in porous media - Google Patents
Thermal diffusion effect experiment device of natural gas hydrate in porous media Download PDFInfo
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- CN201749096U CN201749096U CN 201020253030 CN201020253030U CN201749096U CN 201749096 U CN201749096 U CN 201749096U CN 201020253030 CN201020253030 CN 201020253030 CN 201020253030 U CN201020253030 U CN 201020253030U CN 201749096 U CN201749096 U CN 201749096U
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- diffusion effect
- thermal diffusion
- gas hydrate
- hydrate
- airtight container
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Abstract
The utility model relates to an experiment device, in particular to a thermal diffusion effect experiment device. The thermal diffusion effect experiment device of natural gas hydrate in porous media comprises a sealing container which is arranged in a thermostatic chamber, and the upper end and the lower end in the sealing container are respectively provided with a thermal insulation slab, and the sealing container is respectively communicated with an air supply device and a back pressure valve by pipelines. The upper-end thermal insulation slab is provided with a time-domain reflecting probe, and the lower-end thermal insulation slab is provided with a thermal resistor. A heating device is arranged in the sealing container. The thermal diffusion effect experiment device of natural gas hydrate in porous media can accurately determinate the thermal diffusion effect of hydrate and has the advantages of simple structure, low cost and convenient operation.
Description
Technical field
The utility model relates to a kind of experimental provision, relates in particular to a kind of experimental provision of thermal diffusion effect.
Background technology
Gas hydrate are solid compounds that low-molecular-weight hydrocarbon compound and water form under low temperature, high pressure in the rock gas, be the most typical gas hydrate that nature exists, gas hydrate have advantages such as reserves are big, distribution is wide, it is shallow to bury, energy density is high, the back of burning is pollution-free.Deep day by day along with gas hydrate research, the particularly development of exploitation of gas hydrates technical research, the gas hydrate technology manifests day by day in the application prospect of aspects such as rock gas accumulating, mixed gas separation.In the gas hydrate simulation experiment study, gas hydrate formation, decomposition condition and dynamic (dynamical) simulation experiment study thereof be realize that gas hydrate resource exploitation utilization and gas hydrate technology use in other field basis and precondition.
Gas hydrate are a kind of novel energies that have a high potential, and also are the important component parts of global carbon simultaneously.Hydrate is composed and can be decomposited free gas after the dis environment temperature surpasses the phase flat spot.The factor that influences the hydrate heating and decomposition is a lot, as thermal diffusion coefficient, hydrate heat absorption capacity and the heating exploitation Energy Efficiency Ratio etc. of hydrate deposit layer.By the thermal diffusion effect of hydrate in the research porous medium, seek out optimum temperature and the hot radius of imitating that heat is transmitted, can provide technical support for the carrying out of exploitation work of ocean gas hydrate.
The utility model content
Technique effect of the present utility model can overcome above-mentioned defective, and the thermal diffusion effect experimental provision of a kind of gas hydrate in porous medium is provided, and it is simple in structure, and experiment effect is good.
For achieving the above object, the utility model adopts following technical scheme: it comprises airtight container, and airtight container places in the constant temperature oven, and the sealed container interior upper and lower side is respectively equipped with heat-insulating shield, and airtight container is communicated with feeder, counterbalance valve respectively by pipeline; The heat-insulating shield of upper end is provided with the Time Domain Reflectometry probe, and the heat-insulating shield of lower end is provided with thermal resistance; Be provided with heating arrangement in the airtight container.
The experimental facilities of this utility model can carry out that hydrate is synthetic, single-point heating and decomposition, temperature two dimension gradiometry and TDR (Time Domain Reflectometry) monitoring etc.The maximum working pressure (MOP) of airtight container is 10MPa, container wall thickness 10mm, deposition object height 150mm in the internal diameter 300mm, container.Constant temperature oven adopt " carbon in the snow " low-temperature cooling system, temperature range be-30 ℃ to room temperature.Each is separated by teflon heat-insulating shield of a thick about 30mm up and down in the container, to realize sediment and the thermal insulation of end cap up and down, guarantees that the thermograde of system only is present on the surface level, the temperature field of a two dimension of formation.The constant voltage environment is controlled by the ecp counterbalance valve of Tescom company, the built-in pressure control pid algorithm of counterbalance valve, and the control accuracy height reaches 0.1% of the controlled pressure width of cloth.
The Time Domain Reflectometry probe is provided with 6-8, and thermal resistance is provided with 6-8.Heating arrangement adopts electrical bar, and heating rod places container central authorities, length 150mm, and the maximum 200W of heating power, real work can be controlled output power by PID and reach the heated at constant temperature effect.
Thermal resistance is the center with reactor center (heating rod), according to positional alignment gradually far away successively, is used for monitoring the variation of thermograde in the airtight container in the hydrate simulated experiment process.In addition, also settle the Time Domain Reflectometry probe in the airtight container, be used for calculating hydrate saturation degree in the porous medium.
This device is a purpose with the research of decomposition of hydrate thermal diffusion effect, by the decomposition of hydrate thermal effect analogue experiment installation of special development, comprehensively adopt Time Domain Reflectometry (TDR) measuring technology of sediment thermograde monitoring technology and hydrate saturation degree to carry out a series of simulated experiments.The hydrate generative process has been discussed, sediment cooling graded and corresponding hydrate saturation degree relation; The sediment thermograde is heated spacing from the influence of, heat time heating time and hydrate heat diffusion capabilities etc. in the decomposition of hydrate process.
Be provided with the porous medium fill area between the upper and lower heat-insulating shield in the airtight container, utilize feeder that gas is introduced in the airtight container, gas spreads along porous medium, and the water reaction with in the porous medium generates hydrate.When utilizing experimental provision of the present utility model to carry out the exploitation of gas hydrates simulation, need in porous medium, to generate in advance the hydrate sample.Can under different condition, generate the hydrate sample according to the physical condition of being simulated.
On exhaust system, be provided with counterbalance valve, under the constant voltage of appointment, carry out with the resolution of guaranteeing hydrate in the experimentation.
The thermal diffusion effect experimental provision of gas hydrate of the present utility model in porous medium can accurately be measured the hydrate thermal diffusion effect, and described device is simple, cheap, easy to operate.
Description of drawings
Below in conjunction with the drawings and specific embodiments this device is done detailed description:
Fig. 1 is a structural representation of the present utility model.
Embodiment
This device comprises airtight container 1, and airtight container 1 places in the constant temperature oven 2, and airtight container 1 inner upper and lower side all is provided with heat-insulating shield 3, and airtight container 1 is communicated with feeder 4, counterbalance valve 5 respectively by pipeline; The heat-insulating shield 3 of upper end is provided with Time Domain Reflectometry probe 6, and the heat-insulating shield 3 of lower end is provided with thermal resistance 7; Be provided with heating arrangement 8 in the airtight container 1, heating arrangement 8 adopts electrical bar.
Time Domain Reflectometry probe 6 is provided with eight, and thermal resistance 7 is provided with eight.Be provided with porous medium fill area 9 between the upper and lower heat-insulating shield in the airtight container.
Experiment flow is as follows:
1. in airtight container 1, generate hydrate;
2. according to test arrangement, adopt the heating of heating arrangement 8 line type of heating at circle tube sealing container 1 center, investigate temperature gradient field variation along radial direction.
3. at the upper and lower end cap place of airtight container 1, adopt the insulated design of heat-insulating shield 3,, longitudinal temperature approximate to form in container changes little two-dimensional temperature field.
4. utilize along the variation of rerum natura in the arbitrary group of measuring vessel in many groups two pointer type Time Domain Reflectometry probe 6 of radial direction layout, used Time Domain Reflectometry probe 6 is TDR100.
5. the gas when adopting counterbalance valve 5 to release decomposition of hydrate, the constant pressure of airtight container 1 when observing to keep;
6. computer measurement and control system detects, writes down pressure, temperature variation and the reception of airtight container 1, the data on flows of processing flowmeter.
The characteristics of this system are can test in the two-dimentional reacting field, on one point under the thermal source condition, and the variation of temperature field and hydrate rerum natura.
Claims (5)
1. the thermal diffusion effect experimental provision of gas hydrate in porous medium, it is characterized in that, comprise airtight container, airtight container places in the constant temperature oven, the sealed container interior upper and lower side is respectively equipped with heat-insulating shield, and airtight container is communicated with feeder, counterbalance valve respectively by pipeline; The heat-insulating shield of upper end is provided with the Time Domain Reflectometry probe, and the heat-insulating shield of lower end is provided with thermal resistance; Be provided with heating arrangement in the airtight container.
2. the thermal diffusion effect experimental provision of gas hydrate according to claim 1 in porous medium is characterized in that, is provided with the porous medium fill area between the upper and lower heat-insulating shield in the airtight container.
3. the thermal diffusion effect experimental provision of gas hydrate according to claim 2 in porous medium is characterized in that, the Time Domain Reflectometry probe is provided with 6-8.
4. the thermal diffusion effect experimental provision of gas hydrate according to claim 2 in porous medium is characterized in that, thermal resistance is provided with 6-8.
5. the thermal diffusion effect experimental provision of gas hydrate according to claim 2 in porous medium is characterized in that, heating arrangement adopts electrical bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020253030 CN201749096U (en) | 2010-07-01 | 2010-07-01 | Thermal diffusion effect experiment device of natural gas hydrate in porous media |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020253030 CN201749096U (en) | 2010-07-01 | 2010-07-01 | Thermal diffusion effect experiment device of natural gas hydrate in porous media |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201749096U true CN201749096U (en) | 2011-02-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020253030 Expired - Fee Related CN201749096U (en) | 2010-07-01 | 2010-07-01 | Thermal diffusion effect experiment device of natural gas hydrate in porous media |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201749096U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170292904A1 (en) * | 2015-09-23 | 2017-10-12 | China University Of Petroleum (East China) | Test system and test method for a simulation experiment of gas hydrate in a porous medium |
| TWI621812B (en) * | 2017-04-18 | 2018-04-21 | 國立成功大學 | Methane hydrate burner |
| CN110174434A (en) * | 2019-05-25 | 2019-08-27 | 天津大学 | Heterogeneous content and its method of distribution in a kind of measurement porous material |
-
2010
- 2010-07-01 CN CN 201020253030 patent/CN201749096U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170292904A1 (en) * | 2015-09-23 | 2017-10-12 | China University Of Petroleum (East China) | Test system and test method for a simulation experiment of gas hydrate in a porous medium |
| US9897529B2 (en) * | 2015-09-23 | 2018-02-20 | China University Of Petroleum (East China) | Test system and test method for a simulation experiment of gas hydrate in a porous medium |
| TWI621812B (en) * | 2017-04-18 | 2018-04-21 | 國立成功大學 | Methane hydrate burner |
| CN110174434A (en) * | 2019-05-25 | 2019-08-27 | 天津大学 | Heterogeneous content and its method of distribution in a kind of measurement porous material |
| CN110174434B (en) * | 2019-05-25 | 2021-12-07 | 天津大学 | Method for measuring heterogeneous content and distribution in porous material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20120701 |