CN107817315A - Measurement supercritical carbon dioxide throttles the experimental provision of expansion process in confined chamber - Google Patents
Measurement supercritical carbon dioxide throttles the experimental provision of expansion process in confined chamber Download PDFInfo
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- CN107817315A CN107817315A CN201710999861.9A CN201710999861A CN107817315A CN 107817315 A CN107817315 A CN 107817315A CN 201710999861 A CN201710999861 A CN 201710999861A CN 107817315 A CN107817315 A CN 107817315A
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
A kind of experimental provision for the expansion process that throttled the invention discloses measurement supercritical carbon dioxide in confined chamber, including：Pressure vessel；Nozzle, the bottom of pressure vessel is threadingly attached to, by inputting carbon dioxide in pressure vessel come the pressure in pressure of pressure vessel；Temperature sensor, located at the bottom of the inwall of pressure vessel, for being monitored to the temperature in pressure vessel；Pressure sensor, for being monitored to the pressure in pressure vessel；PTC heating plates, for being internally heated to pressure vessel；Temp control switch, it is adjusted for the heating gear to PTC heating plates so as to which the temperature inside pressure vessel be adjusted；Hollow iron staff, inside pressure vessel, bottom is located above nozzle；Thermocouple arrangement probe, by sealing welding on hollow iron staff, the display instrument of its output line and temperature sensor connects；Automatic decompression valve, for keeping the pressure in pressure vessel in safe range.
Description
Technical field
The present invention relates to a kind of experimental provision, and in particular to one kind measurement supercritical carbon dioxide throttles swollen in confined chamber
The experimental provision of swollen process.
Background technology
Global warming it is increasingly severe, carbon dioxide brings global warming as main greenhouse gases
It is meanwhile again closely related with the life of the mankind in today's society as extinguishing chemical, soda additive etc..It is especially overcritical
Carbon dioxide nearly three during the decade, due to its critical-temperature easily prepared close to room temperature, good hot physical property and migration characteristic with
And the features such as special solvability variation tendency, as central fluid medium in chemical industry, the energy, environmental protection and medicine system
Favor is enjoyed in standby field.And nowadays for the special physicochemical characteristics of supercritical carbon dioxide, and failure procedure
As the throttling expansion process of the supercritical CO 2 of principal physical process, still lacking necessarily has targetedly basic research.Cause
This, the throttling expansion process for supercritical carbon dioxide, needs badly and carries out deep theoretical and experimental study.According to its by
The influence of exterior space can be divided into throttled in open space expansion process and restricted clearance the expansion process that throttles.In opening
The throttling expansion in space is easily achieved, but with regard to needing to be studied in closed space in restricted clearance.
The content of the invention
The present invention is, and it is an object of the present invention to provide a kind of measurement supercritical carbon dioxide exists in order to solving the above problems and carry out
The experimental provision of throttling expansion process in confined chamber.
A kind of experimental provision for the expansion process that throttled the invention provides measurement supercritical carbon dioxide in confined chamber, tool
There is such feature, including：Pressure vessel；Nozzle, the bottom of pressure vessel is threadingly attached to, by pressure vessel
The pressure that input carbon dioxide comes in pressure of pressure vessel；Temperature sensor, located at the bottom of the inwall of pressure vessel, for pair
Temperature in pressure vessel is monitored；Pressure sensor, located at the top of temperature sensor and it is fixed in pressure vessel
On wall, for being monitored to the pressure in pressure vessel；PTC heating plates, located at the lower end of the inwall of pressure vessel, for pair
Pressure vessel is internally heated；Temp control switch, electrically connect, use on the outer wall of pressure vessel, and with PTC heating plates
It is adjusted in the heating gear to PTC heating plates so as to which the temperature inside pressure vessel be adjusted；Hollow iron staff, is located at
Inside pressure vessel, bottom is located above nozzle；Thermocouple arrangement probe, by sealing welding on hollow iron staff, its signal
The display instrument of output line and temperature sensor connects；Automatic decompression valve, located at the outer wall upper end of pressure vessel, for keeping pressing
Pressure in force container is in safe range.
In the experimental provision that measurement supercritical carbon dioxide provided by the invention throttles expansion process in confined chamber, also
It can have the feature that：Wherein, the height of pressure vessel is 35cm, internal diameter 15cm.
In the experimental provision that measurement supercritical carbon dioxide provided by the invention throttles expansion process in confined chamber, also
It can have the feature that：Wherein, pressure vessel uses polycarbonate plate material.
In the experimental provision that measurement supercritical carbon dioxide provided by the invention throttles expansion process in confined chamber, also
It can have the feature that：Wherein, the diameter range of the spray-hole of nozzle is between 0.1-5mm.
In the experimental provision that measurement supercritical carbon dioxide provided by the invention throttles expansion process in confined chamber, also
It can have the feature that：Wherein, the depth of the threaded connection between pressure vessel and nozzle is 5cm.
In the experimental provision that measurement supercritical carbon dioxide provided by the invention throttles expansion process in confined chamber, also
It can have the feature that：Wherein, raw material band is wound with screw thread, for increasing seal.
In the experimental provision that measurement supercritical carbon dioxide provided by the invention throttles expansion process in confined chamber, also
It can have the feature that：Wherein, the bottom of hollow iron staff to the overhead height of pressure vessel be 30cm.
In the experimental provision that measurement supercritical carbon dioxide provided by the invention throttles expansion process in confined chamber, also
It can have the feature that：Wherein, the number of thermocouple arrangement probe has 6, is uniformly set along the bearing of trend of hollow iron staff
Put, the distance of two neighboring thermocouple arrangement probe is 5cm.
The effect of invention and effect
The experiment for the expansion process that throttled according to a kind of measurement supercritical carbon dioxide involved in the present invention in confined chamber
Device because used by temperature sensor and pressure sensor the temperature and pressure of pressure vessel can be controlled,
Observation and research jet effect under the temperature and pressure after carbon dioxide throttling can be realized.Because used pressure is held
Device is closed, so can more obviously observe the backflow phenomenon after jet.Because used PTC heating plates
Different stalls can be adjusted by temp control switch to heat, so the control to temperature in pressure vessel can be realized.Cause
It can be automatically turned on for used automatic decompression valve, so ensure that pressure vessel all the time in safe range.Therefore this hair
A kind of bright measurement supercritical carbon dioxide throttled in confined chamber expansion process experimental provision it is simple to operate, security performance can
Lean on, and measuring method is easy to implement, and feasibility is high, and the throttling expansion to research supercritical carbon dioxide in restricted clearance
Process important in inhibiting.
Brief description of the drawings
Fig. 1 is the structural representation in embodiments of the invention.
Embodiment
In order that the technological means that the present invention realizes is easy to understand with effect, with reference to embodiments and accompanying drawing is to this
Invention is specifically addressed.
Embodiment：
Fig. 1 is the structural representation in embodiments of the invention.
The reality of expansion process as shown in figure 1, a kind of measurement supercritical carbon dioxide of the present embodiment throttles in confined chamber
Experiment device 100, including：Pressure vessel 1, nozzle 2, temperature sensor 3, pressure sensor 4, PTC heating plates 5, temperature control is opened
6 are closed, hollow iron staff 7, thermocouple arranges probe 8 and automatic decompression valve 9.
The height of pressure vessel 1 is 35cm, internal diameter 15cm.
Pressure vessel 1 is using polycarbonate plate material and is closed.
Nozzle 2, the bottom of pressure vessel 1 is threadingly attached to, by being adjusted to input carbon dioxide in pressure vessel 1
Save the pressure in pressure vessel 1.
The diameter range of the spray-hole of nozzle 2 is between 0.1-5mm.
The size of spray-hole can be adjusted according to needed for experiment, can be adjusted before experiment according to the speed of pressing time
The size of whole spray-hole, so as to which slowly release carbon dioxide pressurizes to pressure vessel 1, multigroup difference can also be realized during experiment
Measurement and observation under aperture.
The depth of threaded connection between pressure vessel 1 and nozzle 2 is 5cm, ensure that the seal and peace of pressure vessel 1
Quan Xing.
Raw material band is wound with screw thread, for increasing seal.
Temperature sensor 3, located at the bottom of the inwall of pressure vessel 1, for being supervised to the temperature in pressure vessel 3
Control.
Pressure sensor 4, located at the top of temperature sensor 3 and it is fixed on the inwall of pressure vessel 1, for pressure
Pressure in container 1 is monitored.
PTC heating plates 5, located at the lower end of the inwall of pressure vessel 1, for being internally heated to pressure vessel 1.
Temp control switch 6, electrically connected on the outer wall of pressure vessel 1, and with PTC heating plates 5, for adding to PTC
The heating gear of hot plate 5 is adjusted so as to which the temperature inside pressure vessel 1 be adjusted.
Hollow iron staff 7, inside pressure vessel 1, bottom is located at the top of nozzle 2.Thermocouple cloth can easily be arranged
Put the output line of probe 8.
The bottom of hollow iron staff 7 to the overhead height of pressure vessel 1 be 30cm.
Thermocouple arrangement probe 8, by sealing welding on hollow iron staff 7, its output line and temperature sensor 3
Display instrument connects.
Thermocouple arrangement probe 8 is using armoured thermocouple, and number has 6, equal along the bearing of trend of hollow iron staff 7
Even setting, the distance of two neighboring thermocouple arrangement probe 8 is 5cm.
Automatic decompression valve 9, located at the outer wall upper end of pressure vessel 1, when the pressure in pressure vessel 1 exceeds default scope
When, automatic decompression valve 9 automatically turns on, and the pressure in pressure vessel 1 is remained in safe range, to supercritical carbon dioxide
A constant pressure environment is created in the jet of confined chamber.
A kind of measurement supercritical carbon dioxide of the present embodiment throttled in confined chamber expansion process experimental provision work
It is as follows to make process：
A kind of throttled in the confined chamber experimental provision 100 of expansion process of measurement supercritical carbon dioxide of the present embodiment exists
Before experiment, opening nozzle 2 can slowly be injected into carbon dioxide pressure vessel 1, and pressure vessel 1 is pressurizeed, beaten
Opening PTC heating plates 5 can heat up to the temperature in pressure vessel 1, and the temperature for making pressure vessel 1 be maintained at after throttling
Under pressure state.When pressure vessel 1 needs pressurization, the nozzle 2 of small-bore can be opened, slowly sprays pressure vessel 1,
The pressure value of pressure vessel 1 is read by pressure sensor 4, treats that the pressure value of pressure vessel 1 to be taken, is closed nozzle, stopped
Only spray.It is the process of reducing pressure by regulating flow, therefore, carbon dioxide to carbon dioxide additionally, due to the pressure process to pressure vessel 1
The temperature of pressure vessel 01 can be than relatively low, so needing to the heating treatment of pressure vessel 1, Ke Yili when in into pressure vessel 1
Temperature is adjusted with PTC heating plates 5, temperature sensor 3 is monitored to the temperature in pressure vessel 1, passes through temperature control
System switch 6, the regulation of gear can be carried out according to required heating amount.
When experiment, automatic decompression valve 9 can be controlled to the pressure in pressure vessel 1.Pressure in pressure vessel 1
During more than default pressure value, automatic decompression valve 9 is opened, and remains the pressure in pressure vessel 1 with ambient pressure constant
Within the scope of.
The effect of embodiment and effect
A kind of measurement supercritical carbon dioxide of the present embodiment throttled in confined chamber expansion process experimental provision because
Used temperature sensor and pressure sensor can be controlled to the temperature and pressure of pressure vessel, so can realize
Observation and research jet effect under the temperature and pressure after carbon dioxide throttling.Because used pressure vessel is closed
, so can more obviously observe the backflow phenomenon after jet.Because used PTC heating plates can pass through
Temp control switch adjusts different stalls to heat, so the control to temperature in pressure vessel can be realized.Because used
Automatic decompression valve can automatically turn on, so ensure that pressure vessel all the time in safe range.Therefore the one of the present embodiment
Kind measurement supercritical carbon dioxide throttled in confined chamber expansion process experimental provision it is simple to operate, security performance is reliable, and
And measuring method is easy to implement, feasibility is high, and the throttling expansion process to research supercritical carbon dioxide in restricted clearance
Important in inhibiting.
A kind of measurement supercritical carbon dioxide of the present embodiment throttled in confined chamber expansion process experimental provision because
The material that used pressure vessel uses is polycarbonate plate material, so there is good resistance to pressure and temperature tolerance, and
It is easily worked.
Above-mentioned embodiment is the preferred case of the present invention, is not intended to limit protection scope of the present invention.
Claims (8)
- The experimental provision of expansion process 1. a kind of measurement supercritical carbon dioxide throttles in confined chamber, is arranged on platform, its It is characterised by, including：Pressure vessel；Nozzle, be threadingly attached to the bottom of the pressure vessel, by the pressure vessel input carbon dioxide come Adjust the pressure in the pressure vessel；Temperature sensor, located at the bottom of the inwall of the pressure vessel, for being supervised to the temperature in the pressure vessel Control；Pressure sensor, located at the top of the temperature sensor and it is fixed on the inwall of the pressure vessel, for institute The pressure stated in pressure vessel is monitored；PTC heating plates, located at the lower end of the inwall of the pressure vessel, for being internally heated to the pressure vessel；Temp control switch, electrically connected on the outer wall of the pressure vessel, and with the PTC heating plates, for described The heating gear of PTC heating plates is adjusted so as to which the temperature inside the pressure vessel be adjusted；Hollow iron staff, inside the pressure vessel, bottom is located above the nozzle；Thermocouple arrangement probe, by sealing welding on the hollow iron staff, its output line and the temperature sensor Display instrument connection；AndAutomatic decompression valve, located at the outer wall upper end of the pressure vessel, for keeping the pressure in the pressure vessel in safety In the range of.
- The experimental provision of expansion process 2. measurement supercritical carbon dioxide according to claim 1 throttles in confined chamber, It is characterized in that：Wherein, the height of the pressure vessel is 35cm, internal diameter 15cm.
- The experimental provision of expansion process 3. measurement supercritical carbon dioxide according to claim 1 throttles in confined chamber, It is characterized in that：Wherein, the pressure vessel uses polycarbonate plate material.
- The experimental provision of expansion process 4. measurement supercritical carbon dioxide according to claim 1 throttles in confined chamber, It is characterized in that：Wherein, the diameter range of the spray-hole of the nozzle is between 0.1-5mm.
- The experimental provision of expansion process 5. measurement supercritical carbon dioxide according to claim 1 throttles in confined chamber, It is characterized in that：Wherein, the depth of the threaded connection between the pressure vessel and the nozzle is 5cm.
- The experimental provision of expansion process 6. measurement supercritical carbon dioxide according to claim 5 throttles in confined chamber, It is characterized in that：Wherein, raw material band is wound with the screw thread, for increasing seal.
- The experimental provision of expansion process 7. measurement supercritical carbon dioxide according to claim 1 throttles in confined chamber, It is characterized in that：Wherein, the bottom of the hollow iron staff to the overhead height of the pressure vessel be 30cm.
- The experimental provision of expansion process 8. measurement supercritical carbon dioxide according to claim 1 throttles in confined chamber, It is characterized in that：Wherein, the number of the thermocouple arrangement probe has 6, is uniformly arranged along the bearing of trend of the hollow iron staff, adjacent The distance of two thermocouple arrangement probes is 5cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710999861.9A CN107817315A (en) | 2017-10-24 | 2017-10-24 | Measurement supercritical carbon dioxide throttles the experimental provision of expansion process in confined chamber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710999861.9A CN107817315A (en) | 2017-10-24 | 2017-10-24 | Measurement supercritical carbon dioxide throttles the experimental provision of expansion process in confined chamber |
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| CN107817315A true CN107817315A (en) | 2018-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710999861.9A Pending CN107817315A (en) | 2017-10-24 | 2017-10-24 | Measurement supercritical carbon dioxide throttles the experimental provision of expansion process in confined chamber |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204330095U (en) * | 2014-12-26 | 2015-05-13 | 中国石油化工股份有限公司 | Supercritical CO 2flowmeter prover |
| CN105865520A (en) * | 2016-03-31 | 2016-08-17 | 中国石油大学(华东) | Experimental device for researching supercritical CO2 pipeline emptying features and experimental method thereof |
| CN205826572U (en) * | 2016-05-09 | 2016-12-21 | 武汉轻工大学 | Jiao Er Thomson coefficient determination experiment device |
-
2017
- 2017-10-24 CN CN201710999861.9A patent/CN107817315A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204330095U (en) * | 2014-12-26 | 2015-05-13 | 中国石油化工股份有限公司 | Supercritical CO 2flowmeter prover |
| CN105865520A (en) * | 2016-03-31 | 2016-08-17 | 中国石油大学(华东) | Experimental device for researching supercritical CO2 pipeline emptying features and experimental method thereof |
| CN205826572U (en) * | 2016-05-09 | 2016-12-21 | 武汉轻工大学 | Jiao Er Thomson coefficient determination experiment device |
Non-Patent Citations (1)
| Title |
|---|
| 李康: "小尺度超临界二氧化碳泄漏过程物理机理研究", 《中国博士学位论文全文数据 工程科技Ⅰ辑》 * |
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Application publication date: 20180320 |
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