CN113883975B - Carbon dioxide sends and splits ware phase transition principle viewing device - Google Patents
Carbon dioxide sends and splits ware phase transition principle viewing device Download PDFInfo
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- CN113883975B CN113883975B CN202111137837.7A CN202111137837A CN113883975B CN 113883975 B CN113883975 B CN 113883975B CN 202111137837 A CN202111137837 A CN 202111137837A CN 113883975 B CN113883975 B CN 113883975B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B35/00—Testing or checking of ammunition
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
- G01N25/12—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering of critical point; of other phase change
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Abstract
The invention discloses a phase change principle observation device of a carbon dioxide cracking device, and relates to the technical field of carbon dioxide cracking devices. The invention comprises an infrared high-speed real-time thermal imager, a high-speed camera, a visual assembly, an ignition assembly, a rupture assembly and a support assembly, wherein the visual assembly comprises a high-pressure resistant glass tube: the ignition assembly comprises a heating agent pipe, a heating agent pipe plug and a communicated liquid injection head; the port of the heating agent pipe is provided with an upper heating agent pipe plug which is communicated with a liquid injection head through a connector, the heating pipe is positioned in the high-pressure resistant glass pipe, the connector is provided with an ignition wire, and the liquid injection head is arranged in the port of the high-pressure resistant glass pipe; the heating agent pipe is provided with at least three circles of heat dissipation holes arranged along the axial direction. The method provides guidance for better application of the carbon dioxide fracturing device in the blasting field by measuring the change of the flow field and the temperature field in the liquid storage pipe in the whole phase change process and the whole process and calculating the burning rate of the heating agent.
Description
Technical Field
The invention belongs to the technical field of carbon dioxide cracking devices, and particularly relates to a phase change principle observation device of a carbon dioxide cracking device.
Background
The CARDOX corporation in the uk of the last century proposed a liquid CO2 phase change blasting technique called CARDOX Tube System. The technology is widely applied to the fields of large-scale ore mining and digging, quick and safe blasting, rock stratum fracturing, dredging of the wall of a storage tank and the like. The main principle of the liquid CO2 phase-change cracking technology is that liquid CO2 in a liquid storage pipe is heated to be converted into supercritical CO2, when the pressure in the phase-change pipe reaches the rupture disc breaking strength, a rupture disc breaks, high-pressure supercritical CO2 is instantly converted into gaseous CO2 to be flushed out of the liquid storage pipe, the volume of the gaseous CO2 is 500-600 times of the volume of the same-quality liquid CO2, the volume of the CO2 is instantly expanded by nearly 600 times, high pressure is generated in the continuous expansion process of CO2, and the CO2 gas diffuses to the periphery at a high speed, so that the surrounding medium is damaged.
The process that CO2 in a liquid storage pipe is heated from a liquid state to a supercritical state and then is converted from the supercritical state to a gas state when a rupture disc is ruptured relates to the problem of multi-medium mixing, measurement is difficult, and high-pressure phase balance data of a multi-system is very rare; meanwhile, for the phase change process research of the multi-element fluid mixture, due to the large measurement difficulty and high cost, the multi-element phase balance under high pressure is usually understood by means of theoretical model simulation, and then the reliability of the model is verified through a few experiments. Due to urgent needs of research, a visual device is needed, and the change of a flow field and a temperature field in a liquid storage pipe in the CO2 full-phase-change process and the whole process can be observed, so that verification is provided for a theoretical model;
in addition, what provides the heat-generating agent for the CO2 phase transition in the liquid storage pipe, this heat-generating agent can not burn under the ordinary pressure, so use general speed measurement method to be difficult to test its burning rate, this arouses the control of chronogenesis when using especially blasting to CO2 fracturing device and brings very big puzzlement, also need a visual device, calculates the burning rate of heat-generating agent through the mode of high-speed photography, provides the guidance for the better application in the blasting field of CO2 fracturing device.
Disclosure of Invention
The invention aims to provide an observation device for a phase change principle of a carbon dioxide fracturer, which provides guidance for better application of the CO2 fracturer in the blasting field by measuring the change of a flow field and a temperature field in a liquid storage pipe in the CO2 full phase change process and the whole process and calculating the burning rate of a heating agent.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a carbon dioxide cracking device phase change principle observation device, which comprises an infrared high-speed real-time thermal imager, a high-speed camera and a visual assembly, wherein the visual assembly comprises a high-pressure resistant glass tube:
an ignition assembly: the ignition assembly comprises a heating agent pipe, a heating agent pipe plug and a liquid injection head;
the port of the heating agent pipe is provided with an upper heating agent pipe plug which is communicated with the liquid injection head through a connector, the heating agent pipe is positioned in the high-pressure resistant glass pipe, and the connector is provided with an ignition wire;
the heating agent pipe is provided with at least three circles of heat dissipation holes arranged along the axial direction.
Furthermore, the upper heating agent pipe plug is provided with a guide hole, two ends of the heating agent pipe are open, the other end of the heating agent pipe is provided with the lower heating agent pipe plug, and the surface of the heating agent pipe is wound with a sealing adhesive tape.
Further, annotate overhead line post mounting hole of having seted up of liquid, the terminal is installed to the downthehole installation of line post mounting hole, and the terminal connection arouses the power, annotates the overhead sensor mounting hole that has of liquid, annotates overhead mounting groove that has of liquid, annotates overhead liquid hole that has of liquid, annotates the downthehole installation of liquid and annotate liquid two-way valve.
Furthermore, the connector is a stepped tube formed by a plug connecting part and an annular connecting part, wherein a liquid inlet hole is formed in the plug connecting part, a port of the plug connecting part is sleeved on the plug of the upper heating agent tube, and the annular connecting part is matched in the mounting groove.
Furthermore, the wiring terminal is connected with an ignition wire, the ignition wire penetrates into the heating agent pipe through the liquid inlet hole and the guide hole, and the end part of the ignition wire is provided with an excitation powder head.
Further, still include upper cover and upper pressure ring, the upper cover has annotates the liquid headstock, annotates the liquid headstock and has first sealing washer recess, and first sealing washer recess fit has first sealing washer, annotates the liquid head and installs in annotating the liquid headstock, has first glass pipe bayonet socket in the upper cover, and the port cover of high pressure resistant glass pipe is equipped with and cooperates in first glass pipe bayonet socket behind U type sealing washer 31, and the upper pressure ring passes through the upper cover and compresses tightly annotates the liquid head.
Further, the high-pressure-resistant glass tube sealing device further comprises a lower cover, the lower cover is provided with a breaking seat, a breaking assembly is installed in the breaking seat, the breaking seat is provided with a second sealing ring groove, a second sealing ring is matched in the second sealing ring groove, the end portion of the breaking assembly supports against a lower heating agent tube plug, a second glass tube bayonet is arranged on the lower cover, and a lower U-shaped sealing ring 33 is sleeved on the end portion of the high-pressure-resistant glass tube and then matched on the second glass tube bayonet.
Furthermore, the rupture assembly comprises a lower pressing ring, a rupture plate and a second sealing ring, the lower pressing ring is matched in the rupture seat, one surface of the rupture plate is abutted against the lower pressing ring, and the other surface of the rupture plate is lower than the second sealing ring.
Furthermore, the lower cover and the upper cover are connected through the supporting component, the lower cover is provided with a second bolt through hole, the upper cover is provided with a first bolt through hole, the supporting component comprises a supporting rod, a lower pressing nut, an upper pressing nut and an interval adjusting nut, two ends of the supporting rod are respectively matched with the second bolt through hole and the first bolt through hole, the supporting rods at two ports of the second bolt through hole are respectively matched with the lower pressing nut and the interval adjusting nut, and the supporting rods at two ports of the first bolt through hole are respectively matched with the upper pressing nut and the interval adjusting nut.
Furthermore, two ends of the high-pressure resistant glass tube are respectively sleeved with a U-shaped sealing ring.
The invention has the following beneficial effects:
the invention adopts an infrared high-speed real-time thermal imager and a high-speed camera to record the observed thermal imaging video and the phase change flow field image in real time by arranging the visual component and the high-pressure resistant glass tube, and obtains the carbon dioxide phase change temperature field and the phase change flow field change rule by analyzing the thermal imaging video and the phase change flow field image.
Through the heating agent pipe that sets up in the ignition subassembly, arrange the louvre on the heating agent pipe, combine the image computational analysis that high-speed camera was shot, can obtain the heating agent burning rate, give guidance for the better application of carbon dioxide fracturing ware provides in the blasting field.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is an expanded view of the present invention;
FIG. 3 is a schematic view of a visual component according to the present invention;
FIG. 4 is a schematic expanded view of the ignition assembly of the present invention;
FIG. 5 is a sectional view of the upper cover structure of the present invention;
FIG. 6 is a cross-sectional view of the lower cover structure of the present invention;
FIG. 7 is a schematic partial cross-sectional view of a liquid injection head according to the present invention;
FIG. 8 is a partial cross-sectional view of a connector according to the present invention;
FIG. 9 is a schematic partial cross-sectional view of an ignition assembly of the present invention
FIG. 10 is a schematic view of a rupture assembly of the present invention;
FIG. 11 is a schematic view of an observation test according to the present invention;
in the drawings, the reference numbers indicate the following list of parts:
an upper cover; 20. an ignition assembly; 30. a visual component; 40. a lower cover; 50. a rupture assembly; 60. a support assembly; 101. a first threaded hole; 102. a liquid injection head seat; 103. a first seal ring groove; 104. a first glass tube bayonet; 105. a first bolt through hole; 21. an upper compression ring; 22. a liquid injection head; 221. a liquid injection hole; 2221. a first stud mounting hole; 2222. a second mast mounting hole; 224. a sensor mounting hole; 225. mounting grooves; 23. a first seal ring; 24. a connector; 241. an annular connecting portion; 242. a plug connecting part; 243. a liquid inlet hole; 25. an upper heating agent pipe plug; 251. an upper end head; 252. a guide hole; 26. a heat generating agent tube; 261. a group of radiating holes; 262. heat dissipation holes; 27. a lower heating agent pipe plug; 31. an upper U-shaped sealing ring; 32. a high pressure resistant glass tube; 33. a lower U-shaped sealing ring; 401. a second threaded hole; 402. a rupture seat; 403. a second seal ring groove; 404. a second glass tube bayonet; 405. a second bolt through hole; 201. a first ignition wire; 202. a second ignition wire; 203. exciting the medicine head; 204. a heat generating agent; 205. sealing the adhesive tape; 51. a lower pressure ring; 52. a rupture disc; 53. a second seal ring; 100. a multifunctional device; 200. an experimental platform; 300. an infrared high-speed real-time thermal imager; 400. a high-speed camera; 500. the power supply is activated.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship merely to facilitate description of the invention and to simplify the description, and are not intended to indicate or imply that the referenced components or elements must be in a particular orientation, constructed and operative in a particular orientation, and are not to be construed as limiting the invention.
Referring to fig. 1 to 11, the present invention relates to an observation apparatus for phase transition principle of carbon dioxide cracking device, which comprises an upper cover 10, an ignition assembly 20, a visual assembly 30, a lower cover 40, a cracking assembly 50, and a support assembly 60, wherein an infrared high-speed real-time thermal imager 300 and a high-speed camera 400 are used for observation and recording.
The liquid CO2 is stored in the visualization component 30 for observing the supercritical phase transition of the liquid CO 2.
Specifically, the visual component 30 includes a high-pressure-resistant glass tube 32 and U-shaped seal rings sleeved at two ends of the high-pressure-resistant glass tube 32, and the U-shaped seal rings include a lower U-shaped seal ring 33 and an upper U-shaped seal ring 31.
An upper U-shaped sealing ring 31 is arranged at the upper part of the high-pressure resistant glass tube 32, and a lower U-shaped sealing ring 33 is arranged at the lower part of the high-pressure resistant glass tube 32; the visual assembly 30 is hermetically fixed between the upper cover 10 and the lower cover 40 through a support assembly 60, and the high pressure resistant glass tube 32 is made of sapphire material.
The ignition assembly 20 comprises an upper compression ring 21, a liquid injection head 22, a first sealing ring 23, a connector 24, an upper heating agent pipe plug 25, a heating agent pipe 26 and a lower heating agent pipe plug 27;
the ignition assembly 20 extends into the liquid CO2 in the visual assembly 30 through the upper cover 10, and the ignition assembly 20 generates instantaneous high temperature and heat to heat the liquid CO2 and make the liquid CO2 undergo supercritical phase change.
The rupture assembly 50 comprises a lower compression ring 51, a rupture disc 52 and a second sealing ring 53, the rupture assembly 50 is arranged in the lower cover 40 and communicated to the visual assembly 30, liquid CO2 in the visual assembly 30 undergoes supercritical phase change, the pressure in the visual assembly 30 reaches the breaking strength of the rupture disc 52 in the rupture assembly 50, the rupture disc 52 ruptures, and the high-pressure supercritical CO2 is flushed out to the outside through the rupture assembly 50.
Specifically, annotate and seted up the spool mounting hole on the liquid head 22, the terminal is installed to the downthehole installation terminal of spool mounting, and the terminal connection arouses power supply 500, has sensor mounting hole 224 on annotating the liquid head 22, has mounting groove 225 on annotating the liquid head 22, has on annotating the liquid head 22 and annotates liquid hole 221, annotates the interior installation of liquid hole 221 and annotate liquid two-way valve 206.
The binding post is connected with an ignition wire, the ignition wire penetrates into the heating agent pipe 26 through the liquid inlet hole 243 and the guide hole 252, and the end part of the ignition wire is provided with an excitation explosive head 203.
The end opening of the heating agent pipe 26 is provided with a heating agent pipe plug 25, the upper heating agent pipe plug 25 is communicated with the liquid injection head 22 through a connector 24, the heating agent pipe 26 is positioned in the high-pressure resistant glass pipe 32, the connector 24 is provided with an ignition wire, and the liquid injection head 22 is arranged in the end opening of the high-pressure resistant glass pipe 32.
The heat-generating agent tube 26 has at least three circles of heat dissipation holes 262 arranged along the axial direction thereof, wherein a specific circle of heat dissipation holes 262 constitutes a heat dissipation hole set 261, and a heat dissipation hole set 261 consists of 4 heat dissipation holes.
The upper exothermic agent pipe plug 25 has a guide hole 252, both ends of the exothermic agent pipe 26 are open, the other end is provided with the lower exothermic agent pipe plug 27, and the surface of the exothermic agent pipe 26 is wound with a sealing tape 205.
Specifically, the connector 24 is a stepped tube formed by a plug connecting portion 242 and an annular connecting portion 241, wherein a liquid inlet hole 243 is formed in the plug connecting portion 242, a port of the plug connecting portion 242 is sleeved on the upper heating agent pipe plug 25, the annular connecting portion 241 is fitted in the mounting groove 225, an internal thread is formed in the plug connecting portion 242, an upper end 251 of the upper heating agent pipe plug 25 is hermetically fixed in the plug connecting portion 242 in a threaded connection manner, and the plug connecting portion 242 is provided with the liquid inlet hole 243 which is communicated from inside to outside.
A liquid injection two-way valve 206 is arranged in the liquid injection hole 221, and liquid carbon dioxide enters the high-pressure-resistant glass tube 32 from a liquid inlet hole 243 through the liquid injection two-way valve 206, the annular connecting part 241 of the connector 24 and the plug connecting part 242 of the connector 24; a sensor mounting hole 224 is formed in one side of the liquid injection head 22, the sensor mounting hole 224 is communicated to the high-pressure-resistant glass tube 32 of the visual component 30, and a pressure sensor is arranged in the sensor mounting hole 224 and used for monitoring the pressure state of liquid carbon dioxide in the high-pressure-resistant glass tube 32 in real time.
Wherein the terminal mounting holes comprise a first terminal mounting hole 2221 and a second terminal mounting hole 2222,
a first wire column mounting hole 2221 and a second wire column mounting hole 2222 are formed in the other side of the liquid injection head 22, a first wire column 2011 is arranged in the first wire column mounting hole 2221, and a second wire column 2012 is arranged in the second wire column mounting hole 2222; the first terminal 2011 and the top of the second terminal 2012 are connected with an external excitation power supply, the bottom of the first terminal 2011 is connected with a first ignition wire 2021, the bottom of the second terminal 2012 is connected with a second ignition wire 2022, the first ignition wire 2021 and the second ignition wire 2022 penetrate through a liquid inlet hole 243 on a plug connecting part 242 of the connector 24 to enter a plug connecting part 242 of the connector 24, then penetrate through a guide hole of an upper heating agent pipe plug 25 to extend into the plug to the top of the heating agent pipe 26 and are connected with an excitation powder head 203, the excitation powder head 203 is arranged at the top of the tightly compacted heating agent 204, the first ignition wire 2021 and the second ignition wire 2022 receive instantaneous current provided by the external excitation power supply to ignite the excitation powder head 203, and the heating agent 204 in the heating agent pipe 26 is combusted.
The injection head 22 of the ignition assembly 20 is tightly pressed and sealed in the upper cover 10 through a first sealing ring 23, and the upper pressing ring 21 tightly presses the injection head 22 through the upper cover 10; the connector 24 is fixedly communicated to the bottom of the liquid injection head 22; the heating agent tube 26 is fixedly provided with an upper heating agent tube plug 25 and a lower heating agent tube plug 27 in a sealing way, the upper heating agent tube plug 25 is provided with an upper end head 251 and a guide hole 252, the upper heating agent tube plug 25 is connected with the connector 24 through threads, and the lower heating agent tube plug 27 is arranged at the bottom of the heating agent tube 26; 6 groups of radiating hole groups 261 are arranged on the heating agent pipe 26 along the axial direction according to the distance of every 15mm, 4 radiating holes 262 are arranged on each group of radiating hole groups 261, 4 radiating holes 262 are evenly arranged along the circumference of the same cross section of the heating agent pipe 26, at least 3 groups of radiating holes 262 are arranged, and the heating agent pipe 26 and the visual component 30 are communicated.
The upper cover 10 is provided with an injection head seat 102, the injection head seat 102 is provided with a first sealing ring groove 103, a first sealing ring 23 is matched in the first sealing ring groove 103, the injection head 22 is installed in the injection head seat 102, the upper cover 10 is provided with a first glass tube bayonet 104, and a port of the high-pressure resistant glass tube 32 is sleeved with an upper U-shaped sealing ring 31 and then is matched in the first glass tube bayonet 104.
The lower cover 40 is provided with a breaking seat 402, the breaking assembly 50 is installed in the breaking seat 402, the breaking seat 402 is provided with a second sealing ring groove 403, a second sealing ring 53 is matched in the second sealing ring groove 403, the end part of the breaking assembly 50 is abutted against the lower heating agent pipe plug 27, the lower cover 40 is provided with a second glass pipe bayonet 404, and the end part of the high-pressure resistant glass pipe 32 is sleeved with a lower U-shaped sealing ring 33 and then is matched on the second glass pipe bayonet 404.
In addition, the lower pressing ring 51 is fitted in the rupture seat 402, and one surface of the rupture disk 52 abuts against the lower pressing ring 51 and the other surface is lower than the second seal ring 53.
Specifically, as shown in fig. 1-2, a first threaded hole 101 is formed in the middle of the upper cover 10, a liquid injection head seat 102 is arranged at the bottom of the first threaded hole 101, a first sealing ring groove 103 is formed in the liquid injection head seat 102, a first sealing ring 23 is arranged in the first sealing ring groove 103, first glass tube bayonets 104 are arranged on two sides of the liquid injection head seat 102, and 4 first bolt through holes 105 are uniformly formed in the upper cover 10 along the axial direction. The middle part of the lower cover 40 is provided with a second threaded hole 401, the bottom of the second threaded hole 401 is provided with a breaking seat 402, the breaking seat 402 is provided with a second sealing ring groove 403, a second sealing ring 53 is arranged in the second sealing ring groove 403, the two sides of the breaking seat 402 are provided with second glass tube bayonets 404, and the lower cover 40 is evenly provided with 4 second bolt through holes 405 along the axial direction.
The lower cover 40 and the upper cover 10 are connected through the support assembly 60, the lower cover 40 is provided with a second bolt through hole 405, the upper cover 10 is provided with a first bolt through hole 105, the support assembly 60 comprises a support rod 61, a lower pressing nut 63, an upper pressing nut 64 and a spacing adjusting nut 62, two ends of the support rod 61 are respectively matched on the second bolt through hole 405 and the first bolt through hole 105, the support rod 61 at two ports of the second bolt through hole 405 is respectively matched with the lower pressing nut 63 and the spacing adjusting nut 62, the support rod 61 at two ports of the first bolt through hole 105 is respectively matched with the upper pressing nut 64 and the spacing adjusting nut 62, wherein one end of the upper pressing nut 64, one end of the spacing adjusting nut 62 and one end of the support rod 61 form an upper support head 65 to constrain the upper cover 10, and the other end of the lower pressing nut 63, the spacing adjusting nut 62 and the other end of the support rod 61 form a lower support head 66 to constrain the lower cover 40.
Example 1: a second seal ring 53 is arranged in a second seal ring groove 403 in the lower cover 40, the rupture disc 52 is arranged on the rupture seat 402, and the lower pressing ring 51 presses the rupture disc 52 through the second threaded hole 401 to ensure air tightness; 4 support rods 61 are placed in the second bolt through holes 405 of the lower cover 40, and the lower pressing nuts 63 are screwed into the support rods 61, so that the lower cover 40 is tightly fixed between the lower pressing nuts 63 and the lower support heads 66 of the support rods 61.
The lower U-shaped sealing ring 33 is placed in the second glass tube bayonet 404 of the lower cover 40, the high pressure resistant glass tube 32 is placed in the lower U-shaped sealing ring 33, and the upper U-shaped sealing ring 31 is sleeved on the high pressure resistant glass tube 32.
Sealing adhesive tape 205 is adopted to seal heat dissipation holes 262 on the heating agent pipe 26, the heating agent pipe 26 is filled with heating agent 204, the excitation powder head 203 is placed in the heating agent 204 at the top of the heating agent pipe 26, and the first ignition wire 2021 and the second ignition wire 2022 are led out from a guide hole 252 on the upper heating agent pipe plug 25 and pass through an upper liquid inlet hole 243 on the connector 24; the upper end 251 of the upper exothermic agent pipe plug 25 is screwed into the plug connecting portion 242 of the connector 24, the connector 24 is screwed into the upper connector mounting groove 225 on the liquid injection head 22, the first ignition wire 2021 is connected to the first terminal 2011, and the second ignition wire 2022 is connected to the second terminal 2012.
Placing a first sealing ring 23 into a first sealing ring groove 103 of the upper cover 10, placing the liquid injection head 22 on the liquid injection head seat 102, and tightly pressing the liquid injection head 22 through a first threaded hole 101 by using an upper pressing ring 21 to ensure air tightness;
the upper cover 10 is sleeved on the high pressure resistant glass tube 32 with the upper U-shaped sealing ring 31, the supporting rod 61 is ensured to pass through the first bolt through hole 105 of the upper cover 10, the upper compression nut 64 is screwed on the supporting rod 61, the upper cover 10 is tightly fixed between the upper compression nut 64 and the upper supporting head 65 of the supporting rod 61, and the assembly is completed.
Example 2: and (4) observing the distribution of the CO2 phase-change temperature field and the change of the phase-change flow field.
The assembled multifunctional device 100 for observing the phase change principle of the CO2 fracturing device is fixed on a test platform 200, an infrared high-speed real-time thermal imager 300 and a high-speed camera 400 are placed and started at a safe distance, a first ignition wire 2021 and a second ignition wire 2022 on a liquid injection head 22 are connected to an excitation power supply 500, the excitation power supply 500 sends excitation current to an excitation chemical head 203 connected to the tail ends of the first ignition wire 2021 and the second ignition wire 2022, the excitation chemical head 203 instantly releases extremely high heat to ignite a heating agent 204 in a heating agent tube 26, the heating agent 204 burns in the heating agent tube 26 and conducts the heat from a heat dissipation hole 262 to liquid CO2 in a high-pressure resistant glass tube 32, the liquid CO2 is heated to enable the temperature and the pressure to rise to be converted to a supercritical state, when the pressure in the high-pressure resistant glass tube 32 reaches the failure strength of a rupture disc 52, the rupture disc 52 ruptures, the high-pressure supercritical CO2 is instantly ejected from the high-pressure resistant glass tube 32, the high-pressure resistant glass tube 32 is made of sapphire materials, and the high-speed thermal imager 300 and the high-speed camera 400 obtains a thermal field change image through real-time observation and a thermal imaging video field, and a thermal field analysis video 2 is recorded.
Example 3: and (4) calculating the burning rate of the heat generating agent.
The assembled multifunctional device 100 for observing the phase change principle of the CO2 cracker is placed on a test platform 200, a high-speed camera 400 is placed and opened at a distance of 1 meter, a first ignition wire 2021 and a second ignition wire 2022 on a liquid injection head 22 are connected to an excitation power supply 400, the excitation power supply 400 sends excitation current to an excitation chemical head 203 connected to the tail ends of the first ignition wire 2021 and the second ignition wire 2022, the excitation chemical head 203 instantaneously releases extremely high heat to ignite a heating agent 204 in a heating agent tube 26, the heating agent 204 is propelled forward in a combustion surface form after the heating agent tube 26 is stably combusted, when the combustion surface is propelled to the top layer 2621 of the top layer of the heating agent tube 26 in the heating agent tube 26, a fire heat dissipation hole is ejected from the top layer 2621 of the top layer of the heating agent tube 26, the high-speed camera 400 shoots and records the time t1 at the moment, when the combustion surface continues to be propelled to the next layer of heat dissipation holes 2, the fire light can be ejected from the next layer 2622, the high-speed camera records the time t2 at the moment, the time t2 is calculated, the time difference t1-t2 between two moments, the distance s0 between the top layer 2620 and the top layer 2620: v0= s 0/(t 1-t 2).
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. An observation device for phase change principle of a carbon dioxide cracking device is characterized by comprising an upper cover (10), an ignition assembly (20), a visual assembly (30), a lower cover (40), a rupture assembly (50), a supporting assembly (60), an infrared high-speed real-time thermal imager (300) and a high-speed camera (400);
the visual component (30) comprises a high-pressure-resistant glass tube (32), the visual component (30) is hermetically fixed between the upper cover (10) and the lower cover (40) through a supporting component (60), and liquid CO 2 Stored in a visual component (30);
the ignitionThe component (20) comprises a heating agent tube (26), an upper heating agent tube plug (25), a lower heating agent tube plug (27) and a liquid injection head (22), and the ignition component (20) extends into liquid CO in the visual component (30) through the upper cover (10) 2 The preparation method comprises the following steps of (1) performing;
the rupture component (50) is arranged in the lower cover (40) and communicated to the visual component (30);
a port of the heating agent pipe (26) is provided with an upper heating agent pipe plug (25), the upper heating agent pipe plug (25) is communicated with the liquid injection head (22) through a connector (24), the heating agent pipe (26) is positioned in a high-pressure resistant glass pipe (32), and an ignition wire is arranged on the connector (24);
the heating agent pipe (26) is provided with at least three circles of heat dissipation holes (262) arranged along the axial direction of the heating agent pipe, the heating agent pipe (26) is filled with heating agent (204), and the surface of the heating agent pipe (26) is wound with a sealing adhesive tape (205);
the method for calculating the burning rate of the exothermic agent comprises the following steps:
v0＝s0/(t1-t2)
in the formula, v0 is the burning rate of the heating agent, s0 is the distance between the topmost heat dissipation hole (2621) and the next heat dissipation hole (2622), t1 is the time when the burning surface is pushed to the topmost heat dissipation hole (2621) of the heating agent tube (26) in the heating agent tube (26) and the flare is sprayed out from the topmost heat dissipation hole (2621), and t2 is the time when the burning surface is pushed to the next heat dissipation hole (2622) and the flare is sprayed out from the next heat dissipation hole (2622).
2. The carbon dioxide cracking device phase change principle observation device according to claim 1, wherein the upper heating agent pipe plug (25) is provided with a guide hole (252), two ends of the heating agent pipe (26) are open, and the other end is provided with the lower heating agent pipe plug (27).
3. The carbon dioxide cracking device phase change principle observation device according to claim 2, wherein the liquid injection head (22) is provided with a string mounting hole, a binding post is mounted in the string mounting hole and connected with the excitation power supply (500), the liquid injection head (22) is provided with a sensor mounting hole (224), the liquid injection head (22) is provided with a mounting groove (225), the liquid injection head (22) is provided with a liquid injection hole (221), and the liquid injection two-way valve (206) is mounted in the liquid injection hole (221).
4. The carbon dioxide fracturing device phase change principle observation device according to claim 3, wherein the connector (24) is a stepped tube formed by a plug connecting part (242) and an annular connecting part (241), wherein the plug connecting part (242) is provided with a liquid inlet hole (243), a port of the plug connecting part (242) is sleeved on the upper heating agent pipe plug (25), and the annular connecting part (241) is matched in the mounting groove (225).
5. The observation device for phase change principle of carbon dioxide cracker according to claim 4, wherein the terminal is connected with an ignition wire, the ignition wire is inserted into the heating agent tube (26) through the liquid inlet hole (243) and the guide hole (252), and the end of the ignition wire is provided with an excitation powder head (203).
6. The carbon dioxide fracturing device phase change principle observation device according to any one of claims 1 to 4, further comprising an upper pressing ring (21), wherein the upper cover (10) is provided with a liquid injection head seat (102), the liquid injection head seat (102) is provided with a first sealing ring groove (103), a first sealing ring (23) is matched in the first sealing ring groove (103), the liquid injection head (22) is installed in the liquid injection head seat (102), a first glass tube bayonet (104) is arranged in the upper cover (10), a port sleeve of the high-pressure resistant glass tube (32) is provided with an upper U-shaped sealing ring (31) and then matched in the first glass tube bayonet (104), and the upper pressing ring (21) presses the liquid injection head (22) through the upper cover (10).
7. The carbon dioxide cracking device phase transition principle observation device according to claim 6, wherein the lower cover (40) is provided with a cracking seat (402), the cracking assembly (50) is installed in the cracking seat (402), the cracking seat (402) is provided with a second sealing ring groove (403), a second sealing ring (53) is matched in the second sealing ring groove (403), the end part of the cracking assembly (50) is abutted against the lower heating agent pipe plug (27), the lower cover (40) is provided with a second glass pipe bayonet (404), and the end part of the high-pressure resistant glass pipe (32) is sleeved with a lower U-shaped sealing ring (33) and then matched on the second glass pipe bayonet (404).
8. The carbon dioxide fracturing device phase change principle observation device of claim 7, wherein the rupture assembly (50) comprises a lower pressing ring (51), a rupture disc (52) and a second sealing ring (53), the lower pressing ring (51) is matched in the rupture seat (402), one surface of the rupture disc (52) is pressed against the lower pressing ring (51), and the other surface of the rupture disc is lower than the second sealing ring (53).
9. The carbon dioxide fracturing device phase change principle observation device according to claim 8, wherein the lower cover (40) is connected with the upper cover (10) through a support component (60), the lower cover (40) is provided with a second bolt through hole (405), the upper cover (10) is provided with a first bolt through hole (105), the support component (60) comprises a support rod (61), a lower pressing nut (63), an upper pressing nut (64) and a spacing adjusting nut (62), two ends of the support rod (61) are respectively matched with the second bolt through hole (405) and the first bolt through hole (105), two end openings of the support rod (61) of the second bolt through hole (405) are respectively matched with the lower pressing nut (63) and the spacing adjusting nut (62), and two end openings of the first bolt through hole (105) are respectively matched with the upper pressing nut (64) and the spacing adjusting nut (62).
10. The carbon dioxide fracturing device phase transition principle observation device of claim 9, wherein the two ends of the high pressure resistant glass tube (32) are respectively sleeved with an upper U-shaped sealing ring (31) and a lower U-shaped sealing ring (33).
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| CN202111137837.7A CN113883975B (en) | 2021-09-27 | 2021-09-27 | Carbon dioxide sends and splits ware phase transition principle viewing device |
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| CN113883975B true CN113883975B (en) | 2022-10-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20110064990A (en) * | 2009-12-09 | 2011-06-15 | 이형태 | Heating assembly and heating apparatus having the same |
| CN202092977U (en) * | 2011-05-25 | 2011-12-28 | 天津商业大学 | Carbon dioxide high-pressure pipe external-boiling visual test device |
| CN106645269A (en) * | 2017-01-21 | 2017-05-10 | 西安科技大学 | Simulated testing system of liquid-state CO2 phase change process |
| CN207456301U (en) * | 2017-07-19 | 2018-06-05 | 贵州盛卓科科技有限公司 | Liquid carbon dioxide fracturing device activation tube |
| CN110926970A (en) * | 2019-11-19 | 2020-03-27 | 中交第二公路勘察设计研究院有限公司 | Prefabricated structure surface concrete single-hole blasting test device and test method |
| CN111396048B (en) * | 2020-05-25 | 2022-02-18 | 广东中人岩土工程有限公司 | Carbon dioxide sends and splits ware |
| CN213462368U (en) * | 2020-11-18 | 2021-06-15 | 山西鑫桥科技有限公司 | Heating tube for carbon dioxide cracking device |
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