AU2021101526A4 - Experimental system for researching impact dynamics in liquid carbon dioxide phase-transition jetting process - Google Patents
Experimental system for researching impact dynamics in liquid carbon dioxide phase-transition jetting process Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/70—Combining sequestration of CO2 and exploitation of hydrocarbons by injecting CO2 or carbonated water in oil wells
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Abstract
An experimental system for researching impact dynamics in a liquid carbon dioxide
(C02) phase-transition jetting process includes a CO 2 pressurizing and liquefying system, a
liquid CO2 phase-transition jet forming and monitoring system, and a remote control and data
acquisition system. The liquid CO 2 phase-transition jet forming and monitoring system
includes a constant temperature and humidity chamber, a liquid CO 2 phase-transition jet
forming device, a device for testing an impact stress of the liquid CO 2 phase-transition jet, a
device for testing a flow form of the liquid CO 2 phase-transition jet, and a chamber
environment testing device. The chamber environment testing device includes a humidity
sensor and a second temperature sensor, and is used to test a change law of an ambient
temperature and humidity in the constant temperature and humidity chamber. The present
invention allows research on impact dynamic parameters such as the flow form, a jet pressure
and a stress of an impacted object, an influencing factor, and a change law of the liquid CO 2
phase-transition jet without using a static and dynamic loading device or coal-rock sample,
thus promoting development of a basic theory and application technology.
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Description
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The present invention relates to the field of a liquid carbon dioxide (CO 2
) phase-transition blasting (LCPTB) technology for coal-rock mass, and in particular to an
experimental system for researching impact dynamics in a liquid CO 2 phase-transition jetting
process.
Liquid carbon dioxide (CO 2 ) phase-transition blasting (LCPTB) technology is capable of
fracturing coal-rock and is widely used for breaking, blasting and enhancing the permeability
of coal-rock reservoirs. The principle of this technology is as follows: CO 2 is pressurized and
liquefied to be stored in sealed containers, and high-pressure gas jets are generated by means
of instantaneous heating or instantaneous pressure release to destroy the structures of target
coal-rock mass. The technology has greatly improved in field application, technical
equipment, and other aspects. However, simulation experiments of liquid CO 2 phase-transition jets cannot be performed without using static and dynamic loading devices or
coal-rock samples; the research on impact dynamic parameters such as flow forms, jet
zo pressures and stresses of impacted objects, influencing factors, and change laws of the liquid
CO2 phase-transition jets is still in an initial stage. This has restricted the development of basic theories and applications of LCPTB technology.
An objective of the present invention is to provide an experimental system specially for
researching impact dynamics in a liquid CO 2 phase-transition jetting process, which allows
research on impact dynamic parameters such as a flow form, a jet pressure and a stress of an
impacted object, an influencing factor, and a change law of a liquid CO 2 phase-transition jet
without using a static and dynamic loading device or coal-rock sample, thus promoting the
development of a basic theory and application technology.
Based on this, the present invention adopts the following technical solution: an
experimental system for researching impact dynamics in a liquid CO 2 phase-transition jetting
process includes a CO 2 pressurizing and liquefying system, a liquid CO 2 phase-transition jet
forming and monitoring system, and a remote control and data acquisition system.
The CO 2 pressurizing and liquefying system is used to generate high-pressure liquid CO 2
capable of forming a phase-transition jet.
The liquid CO 2 phase-transition jet forming and monitoring system includes a constant
temperature and humidity chamber as well as a liquid CO 2 phase-transition jet forming
device, a device for testing an impact stress of the liquid CO 2 phase-transition jet, a device for
testing a flow form of the liquid CO 2 phase-transition jet, and a chamber environment testing
device, which are arranged in the constant temperature and humidity chamber.
The liquid CO 2 phase-transition jet forming device includes a pressure sensor, a first
temperature sensor, a pneumatic valve, and a jet nozzle each where the jet nozzle is
connected, via a compressed air tube, into a high-pressure liquid CO 2 outlet in the CO 2
pressurizing and liquefying system outside the constant temperature and humidity chamber,
and cooperates with the pneumatic valve to fulfill instantaneous release of the high-pressure
liquid CO2 to form the liquid CO 2 phase-transition jet; and the pressure sensor and the first
temperature sensor are used to monitor a change of a fluid pressure and temperature in the jet
nozzle in real time.
The device for testing an impact stress of the liquid CO 2 phase-transition jet includes a
guide rail, an impact stress sensor, a rotation angle sensor, and a laser ranging sensor, where
the impact stress sensor and the laser ranging sensor are rotatably arranged on a rotating base
via the same sensor holder, the sensor holder is slidably arranged on the guide rail via the
rotating base; and the impact stress sensor is used to test intensity of the impact stress of the
liquid CO2 phase-transition jet, the laser ranging sensor is used to measure the distance
between the impact stress sensor and the jet nozzle, and the rotation angle sensor is arranged
at the bottom of the sensor holder and is used to measure an angle between the impact stress
sensor and the jet nozzle.
The device for testing a flow form of the liquid CO 2 phase-transition jet includes a
high-speed camera, an infrared camera, and a particle image velocimeter, where the high-speed camera, the infrared camera, and the particle image velocimeter are slidably arranged on the guide rail via mounting supports.
The chamber environment testing device includes a humidity sensor and a second
temperature sensor, and is used to test a change law of an ambient temperature and humidity
in the constant temperature and humidity chamber.
The remote control and data acquisition system includes a computer, a control system,
and a data acquisition system, and is used to acquire, display, and store various data and test
results during an experiment of the impact dynamics of the liquid CO 2 phase-transition jet.
Preferably, the CO2 pressurizing and liquefying system may include an air compressor, a
CO2 cylinder, a CO 2 liquification pump, a low-pressure CO2 storage tank, a liquid CO 2
booster pump, and a high-pressure liquid CO 2 storage tank, where the air compressor may be
used to generate compressed air; and by means of control of valves, CO 2 in the CO 2 cylinder
may be pressurized by the CO 2 liquification pump and stored in the low-pressure CO 2 storage
tank under driving of the compressed air, and liquid CO 2 in the low-pressure CO 2 storage
tank may be pressurized by the liquid CO 2 booster pump to an experimentally predetermined
pressure and stored in the high-pressure liquid CO2 storage tank for later use under the
driving of the compressed air. In addition, a high-low pressure double-pump system may be
adopted to pressurize and liquefy the CO 2 to improve the efficiency in pressurization and
reduce the loss of the CO 2 .
More preferably, the compressed air generated by the air compressor may have a
maximum pressure of 0.8 MPa; the CO 2 liquification pump has a ratio of an input pressure to
an output pressure equal to 1:10 may be used to furthest pressurize the CO 2 in the CO 2
cylinder to 8 MPa; and the liquid CO 2 booster pump having a ratio of an input pressure to an
output pressure equal to 1:100 may be used to furthest pressurize the liquid CO 2 in the
low-pressure CO2 storage tank to 80 MPa; where, the experimentally predetermined pressure
may range from 8 MPa to 60 MPa.
More preferably, a pipeline between the CO 2 cylinder and the CO 2 liquification pump
may be provided with a gas-water separator; the CO 2 pressurizing and liquefying system may
be integrally arranged in a chamber, and this chamber, as well as the constant temperature and
humidity chamber, may be provided with wheels at its bottom, so that the CO 2 pressurizing and liquefying system may have high integration level and be convenient to move.
More preferably, the pneumatic valve may be electrically connected to the remote control
and data acquisition system to achieve remote control and full automatic control.
More preferably, the high-speed camera and the infrared camera may share the same
mounting support to obtain a simplified structure.
More preferably, an integrated temperature and humidity sensor at the top of the constant
temperature and humidity chamber may be adopted to serve as the humidity sensor and the
second temperature sensor.
The present invention has the following beneficial effects:
(1) As a key part of the experimental system, the liquid CO 2 phase-transition jet forming
and monitoring system is mainly used to form the liquid CO 2 phase-transition jet by creating
an environment with constant temperature and humidity and test the temperature, humidity,
flow form, velocity distribution of a flow field, impact stress, and other parameters of the
liquid CO 2 phase-transition jet; and
by adoption of the constant temperature and humidity chamber, the ambient temperature
and humidity of the liquid CO 2 phase-transition jet can be kept constant before the
experiment. In this way, experimental errors caused by a change of the ambient temperature
and humidity will be reduced. The chamber environment testing device can monitor the
change of the ambient temperature and humidity of the liquid CO 2 phase-transition jet in real
zO time, so as to provide data for related subsequent theoretical research. The device for testing
an impact stress of the liquid CO 2 phase-transition jet allows research on a change law of
stresses of an object impacted by the liquid CO 2 phase-transition jet at different distances and
different angles, so as to prevent errors from being caused by an artificial measuring angle
and an artificial measuring distance; and the device for testing a flow form of the liquid CO 2
phase-transition jet allows research on features of a change of the flow form of the liquid CO 2
phase-transition jet as well as features of the velocity distribution of the flow field of the
liquid CO 2 phase-transition jet by means of real-time monitoring.
(2) In a traditional experimental system, the liquid CO 2 phase-transition jet is directly
formed and monitored in air. However, the flow form, pressure, and other parameters of the
impact dynamics of the liquid CO 2 phase-transition jet are seriously influenced by temperature, humidity, and the like. As a result, the ambient temperature and humidity cannot be kept constant in all experiments. An experiment for forming the liquid CO 2 phase-transition jet is performed in the constant temperature and humidity chamber.
Moreover, the pressure sensor and first temperature sensor in the jet nozzle monitor are used
to monitor the change of the fluid pressure and temperature in the jet nozzle in real time, thus
making the state of the experiment stable, and an analysis result of the experiment accurate
and consistent.
(3) The traditional experimental system cannot allows research on the change law of the
stresses of the object impacted by the liquid CO 2 phase-transition jet at different distances
and different angles, and this research has a great influence on determining a size of a CO 2
phase-transition blasting hole, an outlet angle of a blaster, and the like. In view of this, the
experimental system of the present invention achieves the research on the change law of the
stresses of the object impacted by the liquid CO 2 phase-transition jet at different distances
and different angles by means of the device for testing an impact stress of the liquid CO 2
phase-transition jet, so as to prevent errors from being caused by the artificially measured
angle and the artificially measured distance, thus being of great significance in determining
the size of the CO 2 phase-transition blasting hole, the outlet angle of the blaster, and the like.
(4) The present invention allows research on the impact dynamic parameters such as the
flow form, the jet pressure and a stress of an impacted object, an influencing factor, and a
zO change law of the liquid CO 2 phase-transition jet without using a static and dynamic loading
device or coal-rock sample, thus greatly promoting development of a basic theory and
application technology.
FIG. 1 is a structural diagram of the present invention;
FIG. 2 is a structural diagram of a CO 2 pressurizing and liquefying system of the present
invention;
FIG. 3 is a structural diagram of a liquid CO 2 phase-transition jet forming and monitoring
system of the present invention; and
FIG. 4 is a structural diagram of the liquid CO 2 phase-transition jet forming and monitoring system of the present invention.
The present invention is further described below with reference to the embodiments and
accompanying drawings.
As shown in FIG. 1, an experimental system for researching impact dynamics in a liquid
CO2 phase-transition jetting process mainly includes a CO 2 pressurizing and liquefying system 100, a liquid CO 2 phase-transition jet forming and monitoring system 200, and a
remote control and data acquisition system 300.
The CO 2 pressurizing and liquefying system 100 is used to generate high-pressure liquid
CO2 capable of forming a phase-transition jet. As shown in FIG. 2, preferably, a two-stage pressurizing and liquefying system is adopted as the CO 2 pressurizing and liquefying system
100. The CO2 pressurizing and liquefying system 100 mainly includes an air compressor 1, a
CO2 cylinder 2, a CO 2 liquification pump 3, a low-pressure CO2 storage tank 4, a liquid CO 2
booster pump 5, a high-pressure liquid CO 2 storage tank 6, and several tubes.
The air compressor 1 is used to generate compressed air. By way of switching performed
via control of valves, CO 2 in the CO 2 cylinder 2 can be pressurized by the CO 2 liquification
pump 3 and stored in the low-pressure CO 2 storage tank 4 under driving of the compressed air,
and liquid CO 2 in the low-pressure CO2 storage tank 4 can be pressurized by the liquid CO 2
zO booster pump 5 to an experimentally predetermined pressure and stored in the high-pressure
liquid CO2 storage tank 6 for later use under the driving of the compressed air.
The compressed air generated by the air compressor 1 has a maximum pressure of 0.8
MPa; the CO2 liquification pump 3 having a ratio of an input pressure to an output pressure
equal to 1:10 is used to pressurize the CO 2 in the CO 2 cylinder 2 to 8 MPa; and the liquid
CO2 booster pump 5 having a ratio of an input pressure to an output pressure equal to 1:100 is
used to pressurize the liquid CO 2 in the low-pressure CO2 storage tank 4 to 80 MPa; where,
the experimentally predetermined pressure ranges from 8 MPa to 60 MPa.
Preferably, a pipeline between the CO2 cylinder 2 and the CO 2 liquification pump 3 is
provided with a gas-water separator 7; and the CO 2 pressurizing and liquefying system 100 is
integrally arranged in a chamber provided with wheels at its bottom, thus being convenient to move. A high-low pressure double-pump system is formed by the CO 2 liquification pump 3 and the liquid CO2 booster pump 5 in the CO 2 pressurizing and liquefying system 100 to pressurize and liquefy the CO2 ; and the CO2 in the CO 2 cylinder 2 is pressurized by the CO 2 liquification pump 3, and the CO 2 liquefied is pressurized by the liquid CO 2 booster pump 5 again, so that pressurization efficiency of the CO 2 is improved, and low pressurization efficiency and high loss of the CO 2 during pressurization a single pump are avoided. The high-pressure liquid CO2 is prepared by the CO 2 pressurizing and liquefying system 100 particularly by the following steps: close a No. 5 valve at the bottom of the low-pressure
CO2 storage tank 4, open a No. 1 valve beside the air compressor 1, a No. 2 valve at the top of the CO 2 cylinder 2, a No. 3 valve under the CO 2 liquification pump 3, and a No. 4 valve at the top of the low-pressure CO2 storage tank 4, and turn on a power supply of the air compressor 1 to make the CO2 in the CO 2 cylinder 2 pressurized and then filled in the low-pressure CO2 storage tank 4 till the pressure in the low-pressure CO2 storage tank 4 is 8 MPa; close the No. 3 valve under the CO2 liquification pump 3 and a No. 7 valve at the top of the high-pressure liquid CO2 storage tank 6, and open the No. 5 valve at the bottom of the low-pressure CO2 storage tank 4 and a No. 6 valve under the liquid CO 2 booster pump 5 to make the liquid CO 2 in the low-pressure CO 2 storage tank 4 pressurized again and filled in the high-pressure liquid CO2 storage tank 6 till a predetermined initial pressure of the CO 2 is zO reached; and close the No. 6 valve, and open a No. 8 valve. As shown in FIG. 3, the system 200 for forming and monitoring liquid CO 2 phase-transition jets includes a constant temperature and humidity chamber 13 as well as a liquid CO 2 phase-transition jet forming device 400, a device 500 for testing an impact stress of the liquid CO 2 phase-transition jet, a device 600 for testing a flow form of the liquid CO 2
phase-transition jet, and a chamber environment testing device 700, which are arranged in the constant temperature and humidity chamber 13. The constant temperature and humidity chamber 13 is mainly used to keep ambient temperature and humidity of the liquid CO 2 phase-transition jet constant without being affected by the weather outside, so as to facilitate testing, performed by the experimental system, on impact dynamics diameters of the liquid CO 2 phase-transition jet under different conditions such as the initial pressure of the CO 2 and the ambient temperature/humidity. Preferably, the constant temperature and humidity chamber 13 is provided with wheels at its bottom, thus being convenient to move. Before an experiment, temperature and humidity of the constant temperature and humidity chamber 13 are adjusted to a required temperature and humidity. Afterwards, a power supply of the constant temperature and humidity chamber 13 is turned off. As shown in FIG. 3 and FIG. 4, the liquid CO 2 phase-transition jet forming device 400 mainly includes a pressure sensor 14, a first temperature sensor 15, a pneumatic valve 16, and a jet nozzle 17, where the jet nozzle 17 is connected, via a compressed air tube 11, into a high-pressure liquid CO2 outlet in the system 100 for pressurizing and liquefying CO 2 outside the constant temperature and humidity chamber 13, and cooperates with the pneumatic valve 16 to fulfill instantaneous release of the high-pressure liquid CO 2 to form the liquid CO 2 phase-transition jet. The pressure sensor 14 and the first temperature sensor 15 are arranged in the jet nozzle 17 and used to monitor a change of a fluid pressure and temperature in the jet nozzle 17 in real time. The operating process of the liquid CO 2 phase-transition jet forming device 400 is as follows: the remote control and data acquisition system 300 remotely controls the pneumatic valve 16 to achieve the instantaneous release of the high-pressure liquid CO2 , so as to form the liquid CO 2 phase-transition jet by means of the jet nozzle 17, and then the pressure sensor 14 and the first temperature sensor 15 monitor the change of the zO fluid pressure and temperature in the jet nozzle 17. Furthermore, the liquid CO 2 phase-transition jet forming device 400 is mainly used to form the liquid CO 2 phase-transition jet and monitor a change law of the fluid pressure and temperature in the jet nozzle. The device 500 for testing an impact stress of the liquid CO 2 phase-transition jet mainly includes a guide rail 18, an impact stress sensor 19, a rotating base 20, a rotation angle sensor 21, a laser ranging sensor 22, and a sensor holder 23. The impact stress sensor 19 and the laser ranging sensor 22 are rotatably arranged on the rotating base 20 via the same sensor holder 23. The sensor holder 23 is slidably arranged on the guide rail 18 via the rotating base 20. The impact stress sensor 19 is used to test intensity of the impact stress of the liquid CO 2 phase-transition jet, the laser ranging sensor 22 is used to measure the distance between the impact stress sensor 19 and the jet nozzle 17, and the rotation angle sensor 21 is arranged at the bottom of the sensor holder 23 and is used to measure an angle between the impact stress sensor 19 and the jet nozzle 17. The sensor holder 23 adjusted to an appropriate angle by means of rotation is fastened to the rotating base 20 via a bolt, and the rotating base 20 adjusted to an appropriate position by means of sliding is fastened to the guide rail 18 via a bolt, so that adjustable mounting is achieved by means of the rotation and the sliding.
The device 500 for testing an impact stress of the liquid CO 2 phase-transition jet is used
to test intensity of impact stresses of the liquid CO 2 phase-transition jet at different distances
and different angles, so as to facilitate subsequent research on an influencing factor and
change law of the impact stress of the liquid CO 2 phase-transition jet.
The device 600 for testing a flow form of the liquid CO 2 phase-transition jet mainly
includes a high-speed camera 25, an infrared camera 24, and a particle image velocimeter 10.
The high-speed camera 25, the infrared camera 24, and the particle image velocimeter 10 are
slidably arranged on the guide rail 18 via mounting supports 12. Preferably, the high-speed
camera 25 and the infrared camera 24 share the same mounting support 12. The mounting
supports 12 are slidably movable to an appropriate position and are fastened to the guide rail
18 via bolts, so that adjustable mounting is achieved by means of the sliding. The high-speed
camera 25 is mainly used to test the flow form and change law of the liquid CO 2
phase-transition jet, so as to obtain video data of a flowing fluid. The infrared camera 24 is
zO mainly used to obtain features of the flow form of the liquid CO 2 phase-transition jet by
monitoring a temperature change; and the particle image velocimeter 10 is used to obtain
various instantaneous parameters of a whole flow field by means of an imaging technology
and an image analysis technology, so as to measure a velocity field, length of a core area, size,
angle, and other parameters of the liquid CO 2 phase-transition jet.
The chamber environment testing device 700 mainly includes a humidity sensor and a
second temperature sensor, and is used to test a change law of the ambient temperature and
humidity in the constant temperature and humidity chamber 13, so as to provide basic
parameters for theoretical research on impact dynamics of the liquid CO 2 phase-transition jet.
Preferably, an integrated temperature and humidity sensor 9 at the top of the constant
temperature and humidity chamber 13 is adopted to serve as the humidity sensor and the second temperature sensor. The remote control and data acquisition system 300 includes a computer, a control system, and a data acquisition system, and is used to acquire, display, and store various data and test results during an experiment of the impact dynamics of the liquid CO 2 phase-transition jet; and all the sensors are connected to the remote control and data acquisition system 300 via data lines 8. Preferably, the pneumatic valve 16 is electrically connected to the remote control and data acquisition system 300 to achieve remote control. The remote control and data acquisition system 300 is mainly used to remotely control opening and closing of the pneumatic valve in the experimental system for researching impact dynamics in a liquid CO 2 phase-transition jetting process, and acquire, display, and store data from the pressure sensor, first temperature sensor, laser ranging sensor, rotation angle sensor, and impact stress sensor in the experimental system for researching impact dynamics in a liquid CO 2 phase-transition jetting process, data from the second temperature sensor and humidity sensor in the chamber environment testing device, and test results of the high-speed camera, infrared camera, and particle image velocimeter in the experimental system for researching impact dynamics in a liquid CO 2 phase-transition jetting process. It will be understood that the term "comprise" and any of its derivatives (eg comprises, comprising) as used in this specification is to be taken to be inclusive of features to which it refers, and is not meant to exclude the presence of any additional features unless otherwise zO stated or implied.
The reference to any prior art in this specification is not, and should not be taken as, an acknowledgement or any form of suggestion that such prior art forms part of the common general knowledge. It will be appreciated by those skilled in the art that the invention is not restricted in its use to the particular application described. Neither is the present invention restricted in its preferred embodiment with regard to the particular elements and/or features described or depicted herein. It will be appreciated that various modifications can be made without departing from the principles of the invention. Therefore, the invention should be understood to include all such modifications in its scope.
Claims (7)
1. An experimental system for researching impact dynamics in a liquid carbon dioxide
(C0 2 ) phase-transition jetting process, comprising a CO 2 pressurizing and liquefying system (100), a liquid CO 2 phase-transition jet forming and monitoring system (200), and a remote
control and data acquisition system (300);
the CO 2 pressurizing and liquefying system (100) is used to generate high-pressure liquid
CO 2 capable of forming a phase-transition jet; the liquid CO 2 phase-transition jet forming and monitoring system (200) comprises a
constant temperature and humidity chamber (13) as well as a liquid CO 2 phase-transition jet
forming device (400), a device (500) for testing an impact stress of the liquid CO 2
phase-transition jet, a device (600) for testing a flow form of the liquid CO 2 phase-transition
jet, and a chamber environment testing device (700), which are arranged in the constant
temperature and humidity chamber (13);
the liquid CO 2 phase-transition jet forming device (400) comprises a pressure sensor (14),
a first temperature sensor (15), a pneumatic valve (16), and a jet nozzle (17), wherein the jet
nozzle (17) is connected, via a compressed air tube (11), into a high-pressure liquid CO 2
outlet in the CO 2 pressurizing and liquefying system (100) outside the constant temperature
and humidity chamber (13), and cooperates with the pneumatic valve (16) to fulfill
instantaneous release of the high-pressure liquid CO 2 to form the liquid CO 2 phase-transition
jet; and the pressure sensor (14) and the first temperature sensor (15) are used to monitor a
change of a fluid pressure and temperature in the jet nozzle (17) in real time;
the device (500) for testing an impact stress of the liquid CO 2 phase-transition jet
comprises a guide rail (18), an impact stress sensor (19), a rotation angle sensor (21), and a
laser ranging sensor (22), wherein the impact stress sensor (19) and the laser ranging sensor
(22) are rotatably arranged on a rotating base (20) via a same sensor holder (23); the sensor
holder (23) is slidably arranged on the guide rail (18) via the rotating base (20); and the
impact stress sensor (19) is used to test intensity of the impact stress of the liquid CO 2
phase-transition jet, the laser ranging sensor (22) is used to measure a distance between the
impact stress sensor (19) and the jet nozzle (17), and the rotation angle sensor (21) is arranged at the bottom of the sensor holder (23) and is used to measure an angle between the impact stress sensor (19) and the jet nozzle (17); the device (600) for testing a flow form of the liquid CO 2 phase-transition jet comprises a high-speed camera (25), an infrared camera (24), and a particle image velocimeter (10), wherein the high-speed camera (25), the infrared camera (24), and the particle image velocimeter (10) are slidably arranged on the guide rail (18) via mounting supports (12); the chamber environment testing device (700) comprises a humidity sensor and a second temperature sensor, and is used to test a change law of an ambient temperature and humidity in the constant temperature and humidity chamber (13); and the remote control and data acquisition system (300) comprises a computer, a control system, and a data acquisition system, and is used to acquire, display, and store various data and test results during an experiment of the impact dynamics of the liquid CO 2 phase-transitionjet.
2. The experimental system for researching impact dynamics in a liquid CO 2 phase-transition jetting process according to claim 1, wherein the CO 2 pressurizing and liquefying system (100) comprises an air compressor (1), a CO2 cylinder (2), a CO 2 liquification pump (3), a low-pressure CO2 storage tank (4), a liquid CO 2 booster pump (5), and a high-pressure liquid CO2 storage tank (6); the air compressor (1) is used to generate compressed air; and by means of control of valves, CO2 in the CO 2 cylinder (2) can be pressurized by the CO 2 liquification pump (3) and stored in the low-pressure CO 2 storage tank (4) under driving of the compressed air, and liquid CO 2 in the low-pressure CO 2 storage tank (4) can be pressurized by the liquid CO 2 booster pump (5) to an experimentally predetermined pressure and stored in the high-pressure liquid CO2 storage tank (6) for later use under the driving of the compressed air.
3. The experimental system for researching impact dynamics in a liquid CO 2 phase-transition jetting process according to claim 2, wherein the compressed air generated by the air compressor (1) has a maximum pressure of 0.8 MPa; the CO 2 liquification pump (3) having a ratio of an input pressure to an output pressure equal to 1:10 is used to pressurize the
CO2 in the CO 2 cylinder (2) to 8 MPa; and the liquid CO 2 booster pump (5) having a ratio of an input pressure to an output pressure equal to 1:100 is used to pressurize the liquid CO 2 in the low-pressure CO2 storage tank (4) to 80 MPa; wherein, the experimentally predetermined pressure ranges from 8 MPa to 60 MPa.
4. The experimental system for researching impact dynamics in a liquid CO 2 phase-transition jetting process according to claim 2 or claim 3, wherein a pipeline between the CO2 cylinder (2) and the CO 2 liquification pump (3) is provided with a gas-water separator (7); and the CO 2 pressurizing and liquefying system (100) is integrally arranged in a chamber, and this chamber as well as the constant temperature and humidity chamber (13) is provided with wheels at its bottom.
5. The experimental system for researching impact dynamics in a liquid CO 2 phase-transition jetting process according to claim 1, wherein the pneumatic valve (16) is electrically connected to the remote control and data acquisition system (300) to achieve remote control.
6. The experimental system for researching impact dynamics in a liquid CO 2 phase-transition jetting process according to claim 1, wherein the high-speed camera (25) and the infrared camera (24) share a same mounting support (12).
7. The experimental system for researching impact dynamics in a liquid CO 2 phase-transition jetting process according to claim 1, wherein an integrated temperature and humidity sensor (9) at the top of the constant temperature and humidity chamber (13) is adopted to serve as the humidity sensor and the second temperature sensor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010997913.0A CN112129488B (en) | 2020-09-21 | 2020-09-21 | Liquid carbon dioxide phase change jet impact dynamics experimental system |
| CN202010997913.0 | 2020-09-21 |
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|---|---|
| AU2021101526A4 true AU2021101526A4 (en) | 2021-07-22 |
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| AU2021101526A Active AU2021101526A4 (en) | 2020-09-21 | 2021-03-25 | Experimental system for researching impact dynamics in liquid carbon dioxide phase-transition jetting process |
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| AU (1) | AU2021101526A4 (en) |
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|---|---|---|---|---|
| CN113701805B (en) * | 2021-08-11 | 2022-07-19 | 中国地质大学（武汉） | System and method for testing internal temperature and internal pressure and external overpressure of carbon dioxide cracking tube |
| CN114112739A (en) * | 2021-10-22 | 2022-03-01 | 河南理工大学 | Gas phase-change impact rock breaking model test system and application method thereof |
| CN116291462B (en) * | 2023-05-24 | 2023-08-11 | 中国海洋大学 | Ore collecting device and method based on Kangda effect |
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| US5637027A (en) * | 1993-12-23 | 1997-06-10 | Hughes Aircraft Company | CO2 jet spray system employing a thermal CO2 snow plume sensor |
| CN104237305B (en) * | 2014-10-20 | 2016-08-17 | 中国矿业大学(北京) | A kind of rock mass testing device for measuring thermal conductivity and test system |
| CN105823590A (en) * | 2016-05-13 | 2016-08-03 | 武汉大学 | Supercritical carbon dioxide jet-flow confining pressure kettle and motoring system |
| CN108362477B (en) * | 2018-02-08 | 2019-10-11 | 重庆大学 | Slack coal mixed liquor floods lower water jets impact power performance measurement system and method |
| CN110513044A (en) * | 2019-09-18 | 2019-11-29 | 河南理工大学 | A kind of forming method and device of self-oscillation supercritical carbon dioxide jet stream |
| CN110726629B (en) * | 2019-10-31 | 2024-07-02 | 洛阳理工学院 | Indoor test system and method for gas impact concrete test block |
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| CN112129488A (en) | 2020-12-25 |
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