CN212480831U - Liquid carbon dioxide long distance conveying system - Google Patents
Liquid carbon dioxide long distance conveying system Download PDFInfo
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- CN212480831U CN212480831U CN202020610215.6U CN202020610215U CN212480831U CN 212480831 U CN212480831 U CN 212480831U CN 202020610215 U CN202020610215 U CN 202020610215U CN 212480831 U CN212480831 U CN 212480831U
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Abstract
The utility model discloses a liquid carbon dioxide long distance conveying system, including liquid carbon dioxide air supply, electronic tee bend gate valve, gas-liquid converter, booster pump, electrical control valve and pipeline, the three tip of electronic tee bend gate valve is connected respectively the liquid carbon dioxide air supply the gas-liquid converter with the booster pump, the gas-liquid converter with the booster pump all with electrical control valve connects, pipeline is used for the intercommunication the liquid carbon dioxide air supply the electronic tee bend gate valve the gas-liquid converter the booster pump with electrical control valve to let in the collecting space area in the pit with carbon dioxide. The utility model discloses in ensure through booster pump and electrical control valve that there is sufficient pressure among the long distance conveying system, avoid appearing the freezing solidification phenomenon of pipeline.
Description
Technical Field
The utility model relates to a technical field of ore deposit machine fire prevention and cure especially relates to a liquid carbon dioxide long distance conveying system.
Background
Coal mine fire is one of main disasters restricting the healthy development of the coal industry, and coal spontaneous combustion fire is the main form of mine fire. At present, the spontaneous combustion prevention and control technologies of nitrogen injection, grouting, gel injection, stopping agent injection and the like are generally adopted at home and abroad, and each technology has the application conditions and limitations. If the conventional nitrogen injection measures are difficult to take away heat, nitrogen is easy to diffuse and run off; when the multiple line of the grouting system is too large, the grouting diffusion radius is small, and the large-range coverage of the goaf cannot be realized; the glue injection cooling range is small, and when the position of a fire source cannot be determined, the conventional glue injection cannot accurately reach the position of the fire source; the injected liquid nitrogen is easy to freeze in the goaf and the cost is higher; the process requirement of the blocking agent injection is high, and the blocking time is short.
In recent years, many domestic coal-carbon research institutes begin to pay attention to research and exploration on underground spontaneous combustion fire prevention and control of coal mines by using liquid carbon dioxide, and certain achievements are achieved. The carbon dioxide exists in a liquid state at a temperature of-56.6 to 31.1 ℃ and a pressure of 0.417 to 7.09 MPa. The liquid carbon dioxide sprayed into the fire area space can be instantly gasified, and the volume can be expandedThe expansion is about 640 times, and the temperature is sharply reduced by absorbing a large amount of heat, and the temperature can be reduced to-78.5 ℃ at the lowest in a limited space. The phase state of the liquid carbon dioxide is changed along with the pressure and the temperature, once the pressure is reduced, the liquid carbon dioxide can be changed into solid dry ice, so the liquid carbon dioxide is generally stored in a tank car with pressure maintaining and heat insulating functions after leaving a factory from a chemical plant; in view of the arrangement conditions of underground coal mine roadways and the explosion-proof requirements of electrical equipment, a large-scale liquid carbon dioxide tank car (40 m) on the ground3) Can not enter underground coal mine, and is small (2 m) for conventional mine3) The liquid carbon dioxide tank car is used for mine fire prevention and control work, and due to the fact that the size of a tank body is small, the underground transportation danger is large and the like, the difficult problem of coal mine fire prevention and extinguishing cannot be effectively solved, and the fire prevention and control effect is greatly reduced.
Therefore, it is necessary to design a long-distance transportation system for liquid carbon dioxide to prevent the pipeline from freezing and solidifying due to insufficient pressure caused by too long distance between transportation pipelines during transportation of liquid carbon dioxide.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's not enough, provide a liquid carbon dioxide long distance conveying system, in order to ensure liquid carbon dioxide transportation process, prevent because of the pipeline leads to the not enough emergence of the solidification phenomenon that freezes of pressure to appear of pressure apart from the overlength.
The technical scheme of the utility model a liquid carbon dioxide long distance conveying system is provided, including liquid carbon dioxide air supply, electronic tee bend gate valve, gas-liquid converter, booster pump, electrical control valve and pipeline, the three tip of electronic tee bend gate valve is connected respectively the liquid carbon dioxide air supply the gas-liquid converter with the booster pump, the gas-liquid converter with the booster pump all with electrical control valve connects, pipeline is used for the intercommunication the liquid carbon dioxide air supply the electronic tee bend gate valve the gas-liquid converter the booster pump with electrical control valve to let in the collecting space area in the pit with carbon dioxide.
Further, the electric control valve has two, one is installed on the ground, and the other is installed underground.
Further, still include the sensor unit, the sensor unit includes pressure sensor, flow sensor and temperature sensor, the sensor unit is connected the rear end of electrical control valve.
Further, the sensor units are arranged in two groups, one group is arranged on the ground, and the other group is arranged in the underground.
Further, still include control center and a plurality of carbon dioxide sensor of arranging in ground and pit, carbon dioxide sensor with control center communication connection, after carbon dioxide sensor detected the carbon dioxide of revealing, control center control electronic three way gate valve, gas-liquid converter, the booster pump with the electrical control valve is closed.
Furthermore, the control center comprises a ground mining intrinsic safety type monitoring substation, an underground optical fiber switch, a ground optical fiber switch and a ground central station;
the underground mining intrinsic safety type monitoring substation is connected with the underground optical fiber switch, then the ground optical fiber switch is connected, and finally the ground central station is connected.
Further, the gas-liquid converter is a spiral tube heating device, the temperature in the gas-liquid converter is higher than 35 ℃, and the temperature of carbon dioxide at an outlet is higher than 31.5 ℃.
Further, the pressure of the liquid carbon dioxide at the outlet of the booster pump is 2 Mpa.
Further, the conveying pipeline comprises a ground section, a downhole section and a vertical section, the ground section is laid along the horizontal direction of the ground surface, the downhole section is laid along the horizontal direction of the roadway bottom plate, and the vertical section is arranged in the stratum along the vertical direction and penetrates through the ground and the downhole roadway.
Further, the conveying pipeline is a low-temperature-resistant and high-pressure-resistant pipeline.
After adopting above-mentioned technical scheme, have following beneficial effect:
the utility model provides an air source through the liquid carbon dioxide air source, the gas-liquid converter converts the liquid carbon dioxide into gaseous carbon dioxide, the booster pump is a booster device of the liquid carbon dioxide conveying system, the electric regulating valve is a pressure regulating device of the long-distance conveying system, and finally the gaseous carbon dioxide is introduced into the underground goaf to play the role of underground fire extinguishing; the booster pump and the electric regulating valve ensure enough pressure in the long-distance conveying system, and the phenomenon of freezing and solidifying of pipelines is avoided.
Drawings
The disclosure of the present invention will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present disclosure. In the figure:
fig. 1 is a schematic diagram of a long-distance liquid carbon dioxide delivery system according to an embodiment of the present invention.
Reference symbol comparison table:
the system comprises a liquid carbon dioxide gas source 1, a metal hose 2, an electric three-way gate valve 3, a conveying pipeline 4, a gas-liquid converter 5, a booster pump 6, a check valve 7, an electric control valve 8, a pressure sensor 9, a flow sensor 10, a temperature sensor 11, a ground mining intrinsic safety type monitoring substation 12, a carbon dioxide sensor 13, a communication optical cable 14, an underground optical fiber exchanger 15, a ground optical fiber exchanger 16, a ground central station 17 and an underground mining intrinsic safety type monitoring substation 18.
Detailed Description
The following describes the present invention with reference to the accompanying drawings.
It is easily understood that, according to the technical solution of the present invention, a plurality of structural modes and implementation modes that can be mutually replaced by those of ordinary skill in the art can be achieved without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are only exemplary illustrations of the technical solutions of the present invention, and should not be construed as limiting or restricting the technical solutions of the present invention in its entirety or as a limitation of the present invention.
The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.
In this embodiment, as shown in fig. 1, liquid carbon dioxide long distance conveying system, including liquid carbon dioxide air supply 1, electronic tee gate valve 2, gas-liquid converter 5, booster pump 6, electrical control valve 8 and transfer line 4, liquid carbon dioxide air supply 1 is connected respectively to the three tip of electronic tee gate valve 8, gas-liquid converter 5 and booster pump 6 all are connected with electrical control valve 8, transfer line 4 is used for communicateing liquid carbon dioxide air supply 1, electronic tee gate valve 3, gas-liquid converter 5, booster pump 6 and electrical control valve 8, and let in the carbon dioxide to the mined-out space area in the pit.
Specifically, the liquid carbon dioxide gas source 1 is a liquid carbon dioxide tank car, and the liquid carbon dioxide tank car is used for conveying liquid carbon dioxide to the electric three-way gate valve 2 and is connected through the metal hose 2.
The electric three-way gate valve 3 is a conveying direction switching device of a long-distance liquid carbon dioxide conveying system, an inlet of the electric three-way gate valve 3 is connected with a liquid carbon dioxide tank wagon (a liquid carbon dioxide gas source 1) through a metal hose 2, an outlet of the electric three-way gate valve 3 is connected with an inlet of a gas-liquid converter 5 through a conveying pipeline 4, and an outlet of the electric three-way gate valve 3 is connected with an inlet of a booster pump 6 through the conveying pipeline 4.
The gas-liquid converter 5 is a phase-state conversion device for carbon dioxide, and converts liquid carbon dioxide into gaseous carbon dioxide. The gas-liquid converter 5 is positioned on the ground, the inlet of the gas-liquid converter 5 is connected with the one-way outlet of the electric three-way gate valve 3 through the conveying pipeline 4, and the outlet of the gas-liquid converter 5 is connected with the inlet of the electric regulating valve 8 on the ground through the conveying pipeline 4 and the check valve 7 and the three-way valve.
The booster pump 6 is a booster device of a long-distance liquid carbon dioxide conveying system, the inlet of the booster pump 6 is connected with the one-way outlet of the electric three-way gate valve 3 through the conveying pipeline 4, the outlet of the booster pump 6 is connected with the inlet of the ground electric regulating valve 8 through the conveying pipeline 4 via the check valve 7 and the three-way valve
The check valve 7 is a device for preventing the medium in the conveying pipeline 4 from flowing back, and the check valve 7 is provided with two parts, one part is connected with the gas-liquid converter 5, and the other part is connected with the booster pump 6.
The conveying pipeline 4 connected with the gas-liquid converter 5 and the booster pump 6 is converged at the electric regulating valve 8, and the electric regulating valve 8 is a pressure regulating device of the long-distance liquid carbon dioxide conveying system.
Wherein, the liquid carbon dioxide gas source 1, the electric three-way gate valve 2, the gas-liquid converter 5 and the booster pump 6 are all arranged on the ground.
In the embodiment, a gas source is provided by a liquid carbon dioxide gas source 1, the liquid carbon dioxide is converted into gaseous carbon dioxide by a gas-liquid converter 5, a booster pump 6 is a booster device of a liquid carbon dioxide conveying system, an electric regulating valve 8 is a pressure regulating device of a long-distance conveying system, and finally the gaseous carbon dioxide is introduced into an underground goaf to play a role in underground fire extinguishing; the booster pump 6 and the electric regulating valve 8 ensure enough pressure in the long-distance conveying system, and the phenomenon of freezing and solidifying of pipelines is avoided.
Further, as shown in fig. 1, the electric control valve 8 has two, one installed at the surface and the other installed downhole.
Further, the long-distance liquid carbon dioxide conveying system also comprises a sensor unit, wherein the sensor unit comprises a pressure sensor 9, a flow sensor 10 and a temperature sensor 11, and the sensor unit is connected to the rear end of the electric regulating valve 8. The sensor units are in two groups, one group is arranged on the ground, and the other group is arranged underground.
Specifically, the pressure sensor 9, the flow sensor 10 and the temperature sensor 11 are pressure, flow and temperature monitoring and collecting devices of the liquid carbon dioxide long-distance conveying system. One group of the electric regulating valve 8, the pressure sensor 9, the temperature sensor 10 and the flow sensor 11 is positioned on the ground, the other group is positioned underground, the inlet of the electric regulating valve 8 on the ground is respectively connected with the gas-liquid converter 5 and the booster pump 6 through a tee joint and a check valve 7, and the outlet of the electric regulating valve 8 on the ground is sequentially connected with the pressure sensor 9, the flow sensor 10 and the temperature sensor 11 on the ground through the conveying pipeline 4 and then is connected with the inlet of the conveying pipeline 4. The inlet of the underground electric regulating valve 8 is connected with an underground pressure sensor 9, a temperature sensor 10 and a flow sensor 11 through a conveying pipeline 4, and the outlet is communicated with the goaf.
Further, the system also comprises a control center and a plurality of carbon dioxide sensors 13 arranged on the ground and underground, the carbon dioxide sensors 13 are in communication connection with the control center, and after the carbon dioxide sensors 13 detect leaked carbon dioxide, the control center controls the electric three-way gate valve 3, the gas-liquid converter 5, the booster pump 6 and the electric regulating valve 8 to be closed.
The carbon dioxide sensors 13 are ground and underground air environment carbon dioxide content detection devices and are arranged along the conveying pipelines 4, one part of the carbon dioxide sensors 13 are located on the ground, one part of the carbon dioxide sensors are located underground, the ground carbon dioxide sensors 13 are sequentially connected through communication optical cables 14 and are finally connected with the ground mining intrinsic safety type monitoring substation 12, the length of the conveying pipelines on the ground, the number of the underground carbon dioxide sensors 13 is comprehensively determined, the underground carbon dioxide sensors 13 are sequentially connected through the communication optical cables 4 and are finally connected with the underground mining intrinsic safety type monitoring substation 18, and the number of the underground carbon dioxide sensors 13 is comprehensively determined according to the length of the underground conveying pipelines 4.
Further, the control center comprises a ground mining intrinsic safety type monitoring substation 12, an underground mining intrinsic safety type monitoring substation 18, an underground optical fiber switch 15, a ground optical fiber switch 16 and a ground central station 17;
the ground mining intrinsic safety type monitoring substation 12 is connected with a plurality of carbon dioxide sensors 13 on the ground, the underground mining intrinsic safety type monitoring substation 18 is connected with a plurality of underground carbon dioxide sensors 13, the underground mining intrinsic safety type monitoring substation 18 is connected with an underground optical fiber switch 15, then the ground optical fiber switch 16 is connected, and finally the ground central station 17 is connected.
Specifically, the ground mining intrinsic safety type monitoring substation 12 and the underground mining intrinsic safety type monitoring substation 18 are control instruction output devices of an electric three-way gate valve 3, a gas-liquid converter 5, a booster pump 6, an electric regulating valve 8, a pressure sensor 9, a flow sensor 10, a temperature sensor 11 and a carbon dioxide sensor 13, and control instruction output devices of the electric three-way gate valve 3, the gas-liquid converter 5, the booster pump 6 and the electric regulating valve 8, wherein one control instruction output device is located on the ground, and the other control instruction output device is located underground.
The ground mining intrinsic safety type monitoring substation 12 is connected with an underground mining intrinsic safety type monitoring substation 18 through a mining communication optical cable 14, the communication optical cable 14 is a 4-core, 6-core or 8-core mining optical cable, and the ground mining intrinsic safety type monitoring substation 12 is respectively connected with a ground electric three-way gate valve 3, a gas-liquid converter 5, a booster pump 6, an electric regulating valve 8, a pressure sensor 9, a flow sensor 10 and a temperature sensor 11 through the communication optical cable 14.
The underground mining intrinsic safety type monitoring substation 18 is respectively connected with an underground electric regulating valve 8, a pressure sensor 9, a flow sensor 10 and a temperature sensor 11 through communication optical cables 14. The underground mining intrinsic safety type monitoring substation 18 is connected with an underground optical fiber switch 15 through a communication optical cable 14, then jumps to an aboveground optical fiber switch 16, and finally is connected with a ground central station 17 in an aboveground ground dispatching room.
The ground central station 17 receives various parameters transmitted by the ground mining intrinsically safe monitoring substation 12 and the underground mining intrinsically safe monitoring substation 18, realizes intelligent judgment and sends a control command to the ground mining intrinsically safe monitoring substation 12 and the underground mining intrinsically safe monitoring substation 18 so as to control the operation of the whole long-distance liquid carbon dioxide conveying system and automatic locking when a fault occurs.
Further, the conveying pipeline 4 comprises a ground section, a downhole section and a vertical section, the ground section is laid along the horizontal direction of the ground surface, the downhole section is laid along the horizontal direction of the roadway bottom plate, and the vertical section is arranged in the stratum along the vertical direction and penetrates through the ground and the downhole roadway.
Specifically, the conveying pipeline 4 is a long-distance conveying channel for liquid carbon dioxide, and is composed of a plurality of conveying pipelines 4, and the length is comprehensively determined according to actual conditions. The ground section is laid along the horizontal direction of the ground surface, the underground section is laid along the horizontal direction of a roadway bottom plate, and the vertical section is arranged in the stratum along the vertical direction and penetrates through the ground and the underground roadway; an inlet of an underground electric regulating valve 8 is sequentially connected with an underground pressure sensor 9, a flow sensor 10 and a temperature sensor 11 through a conveying pipeline 4 and further connected with an outlet of the conveying pipeline 4, and an outlet of the underground electric regulating valve 8 is connected with a goaf sealing wall measure pipe through a metal hose 2; the metal hose 2 is a connecting device for each part and pipeline and is positioned at the turning position of the conveying pipeline.
Preferably, the conveying pipeline 4 and the metal hose 2 are both low-temperature-resistant and high-pressure-resistant pipelines so as to bear the low temperature and the high pressure of the liquid carbon dioxide.
Preferably, the electric three-way gate valve 3, the check valve 7, the electric control valve 8, the pressure sensor 9, the flow sensor 10 and the temperature sensor 11 are all low temperature and high pressure resistant devices to bear the low temperature and high pressure of the liquid carbon dioxide.
Preferably, the gas-liquid converter 5 is a spiral tube heating device, and in order to ensure complete gasification of carbon dioxide, the temperature inside the gas-liquid converter 5 is more than 35 ℃, and the temperature of carbon dioxide at the outlet is more than 31.5 ℃.
Preferably, the liquid carbon dioxide pressure at the outlet of the booster pump 6 is 2 Mpa.
Preferably, the ground mining intrinsic safety type monitoring substation 12 and the underground mining intrinsic safety type monitoring substation 18 adopt an embedded control system with a 32-bit embedded microcontroller of an ARM core as a core, have various interfaces, can be connected with various ultralow temperature sensors in a hanging mode, have a multi-channel and multi-system signal acquisition function and a communication function, can transmit various monitored parameters and equipment states to a ground central station in time through an industrial Ethernet or a bus, and execute various commands sent by the central station.
The specific implementation steps in this example are as follows:
the method comprises the following steps: the device is connected, a metal hose 2 is used for connecting a liquid carbon dioxide tank car with an inlet of an electric three-way gate valve 3, a conveying pipeline 4 is used for connecting an outlet of the electric three-way gate valve 3 with an inlet of a gas-liquid converter 5, the conveying pipeline 4 is used for connecting an outlet of the electric three-way gate valve 3 with an inlet of a booster pump 6, the conveying pipeline 4 is used for connecting an outlet of the gas-liquid converter 5 with an outlet of the booster pump 6 and an inlet of a ground electric regulating valve 8 through a check valve 7 and a three-way valve, the conveying pipeline 4 is used for sequentially connecting an outlet of the ground electric regulating valve 8 with a pressure sensor 9, a flow sensor 10 and a temperature sensor 11 on the ground and is connected with an inlet of the conveying pipeline 4, an outlet of the conveying pipeline 4 is sequentially connected with an inlet of a downhole temperature sensor 11, a flow sensor 10, a pressure sensor 9 and an electric regulating valve 8, the outlet of the downhole electric regulating valve 8 and a Connecting; the ground mining intrinsic safety type monitoring substation 12 is respectively connected with an electric three-way gate valve 3, a gas-liquid converter 5, a booster pump 6, an electric regulating valve 8, a pressure sensor 9, a flow sensor 10 and a temperature sensor 11 on the ground by using a communication cable 14, the ground mining intrinsic safety type monitoring substation 12 is sequentially connected with a carbon dioxide sensor 13 on the ground by using the communication cable 14, the ground mining intrinsic safety type monitoring substation 12 is connected with an underground mining intrinsic safety type monitoring substation 18 by using the communication cable 14, the underground mining intrinsic safety type monitoring substation 18 is respectively connected with the underground electric regulating valve 8, the pressure sensor 9, the flow sensor 10 and the temperature sensor 11 by using the mining communication cable 14, the underground mining intrinsic safety type monitoring substation 18 is sequentially connected with the underground carbon dioxide sensor 13 by using the communication cable 14, the underground mining intrinsic safety type monitoring substation 18 is connected with an underground optical fiber switch 15 by using the communication cable 14, the surface central station 17 is connected to the above-well fibre optic switch 16.
Step two: checking air tightness, namely opening a channel from the electric three-way gate valve 3 to the gas-liquid converter 5, opening an electric adjusting valve 8 on the ground to be in a fully open state, opening an underground electric adjusting valve 8 to be in a fully open state, opening the gas-liquid converter 5, converting liquid carbon dioxide into a gas state in the gas-liquid converter through natural heat exchange or strong heat exchange with ambient air, treating gas in the conveying pipeline 4 by adopting the gas carbon dioxide, and purging and ventilating for 10 min; and (3) closing the underground electric regulating valve 8, continuously increasing the pressure of the conveying pipeline 4 to 1.8-2.0 Mpa, closing the gas-liquid converter 5, maintaining the pressure for 20min, and judging the air tightness of the conveying pipeline 4 according to the data changes of the pressure sensor 9, the flow sensor 10, the temperature sensor 11 and the carbon dioxide sensor 13.
Step three: liquid carbon dioxide is directly injected, a channel from an electric three-way gate valve 3 to a booster pump 6 is opened, the booster pump 6 is opened, an underground electric regulating valve 8 is opened, the liquid carbon dioxide flows through the electric three-way gate valve 3, enters the booster pump 6 to be pressurized to 2.0Mpa, flows into a ground electric regulating valve 8, sequentially flows through a ground pressure sensor 9, a flow sensor 10 and a temperature sensor 11, enters a conveying pipeline 4, flows into the underground electric regulating valve 8 through an underground temperature sensor 11, a flow sensor 10 and a pressure sensor 9, and the underground electric regulating valve 8 is controlled by the ground pressure sensor 9, the flow sensor 10 and the temperature sensor 11, the opening and closing state of the valve plate is adjusted according to data fed back by the underground pressure sensor 9, the flow sensor 10 and the temperature sensor 11, the pressure in the conveying pipeline 4 is kept at 1.8-2.0 Mpa, and liquid carbon dioxide flows out of the underground electric regulating valve 8 and is injected into a goaf through the high-pressure hose 4; when any one of the carbon dioxide sensors 13 on the ground and in the underground detects carbon dioxide or the flow data fed back by the flow sensors 10 on the ground and in the underground obviously declines, the system automatically closes the electric three-way gate valve 3 on the ground, the booster pump 6, the electric regulating valve 8 on the ground and the electric regulating valve 8 in the underground, and the system is automatically locked.
Step four: cleaning a pipeline, after liquid carbon dioxide is injected directly, opening a channel from the electric three-way gate valve 3 to the gas-liquid converter 5, opening the electric regulating valve 8 on the ground and the underground electric regulating valve 8 to a fully-opened state, treating gas in the conveying pipeline 4 by adopting gaseous carbon dioxide to ensure that the conveying pipeline 4 does not have the phenomenon of dry ice freezing and blocking, purging and ventilating for 10min, closing the electric three-way gate valve 3 on the ground, the gas-liquid converter 5, the electric regulating valve 8 on the ground and the underground electric regulating valve 8, and finishing the cleaning work of the conveying pipeline 4.
What has been described above is merely the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principle of the present invention, several other modifications can be made, and the protection scope of the present invention should be considered.
Claims (10)
1. The utility model provides a liquid carbon dioxide long distance conveying system, its characterized in that, includes liquid carbon dioxide air supply, electronic tee bend gate valve, gas-liquid converter, booster pump, electrical control valve and pipeline, the three tip of electronic tee bend gate valve is connected respectively the liquid carbon dioxide air supply gas-liquid converter with the booster pump, gas-liquid converter with the booster pump all with electrical control valve connects, pipeline is used for the intercommunication the liquid carbon dioxide air supply electronic tee bend gate valve gas-liquid converter the booster pump with electrical control valve to let in the carbon dioxide to the collecting space area in the pit.
2. The long distance liquid carbon dioxide delivery system of claim 1, wherein said electrically controlled regulator valves are two, one installed at the surface and the other installed downhole.
3. The liquid carbon dioxide long distance transport system of claim 1, further comprising a sensor unit including a pressure sensor, a flow sensor and a temperature sensor, the sensor unit being connected at the rear end of the electrically adjustable valve.
4. A liquid carbon dioxide long distance transport system according to claim 3, characterized in that the sensor units are installed in two groups, one group being installed at the surface and the other group being installed downhole.
5. The long-distance liquid carbon dioxide conveying system according to claim 1, further comprising a control center and a plurality of carbon dioxide sensors arranged on the ground and underground, wherein the carbon dioxide sensors are in communication connection with the control center, and after the carbon dioxide sensors detect leaked carbon dioxide, the control center controls the electric three-way gate valve, the gas-liquid converter, the booster pump and the electric regulating valve to be closed.
6. The liquid carbon dioxide long distance transportation system of claim 5, wherein the control center comprises a surface mining intrinsic safety type monitoring substation, a downhole optical fiber switch, a surface optical fiber switch and a surface central station;
the underground mining intrinsic safety type monitoring substation is connected with the underground optical fiber switch, then the ground optical fiber switch is connected, and finally the ground central station is connected.
7. The long-distance liquid carbon dioxide conveying system according to claim 1, wherein the gas-liquid converter is a spiral pipe heating device, the temperature in the gas-liquid converter is more than 35 ℃, and the temperature of carbon dioxide at an outlet is more than 31.5 ℃.
8. The liquid carbon dioxide long distance transport system of claim 1, wherein the liquid carbon dioxide pressure at the outlet of the booster pump is 2 Mpa.
9. The liquid carbon dioxide long distance transport system of claim 1, wherein the transport pipeline comprises a surface section, a downhole section and a vertical section, the surface section is laid along the horizontal direction of the earth surface, the downhole section is laid along the horizontal direction of the roadway floor, and the vertical section is arranged in the ground layer along the vertical direction and penetrates through the earth surface and the roadway.
10. The long distance liquid carbon dioxide conveying system according to claim 1, wherein the conveying pipeline is a low temperature and high pressure resistant pipeline.
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| CN202020610215.6U CN212480831U (en) | 2020-04-21 | 2020-04-21 | Liquid carbon dioxide long distance conveying system |
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| CN202020610215.6U CN212480831U (en) | 2020-04-21 | 2020-04-21 | Liquid carbon dioxide long distance conveying system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113843226A (en) * | 2021-09-16 | 2021-12-28 | 陕西裕隆气体有限公司 | Method for preventing and dredging liquid carbon dioxide pipeline from being dry ice |
| CN115388328A (en) * | 2022-08-17 | 2022-11-25 | 山东科技大学 | Underground CO (carbon monoxide) storage for coal mine 2 Gasification energy-saving device and method |
| CN115577216A (en) * | 2022-10-13 | 2023-01-06 | 新疆敦华绿碳技术股份有限公司 | Supercritical carbon dioxide pipeline long-distance transmission phase state control system and method |
-
2020
- 2020-04-21 CN CN202020610215.6U patent/CN212480831U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113843226A (en) * | 2021-09-16 | 2021-12-28 | 陕西裕隆气体有限公司 | Method for preventing and dredging liquid carbon dioxide pipeline from being dry ice |
| CN115388328A (en) * | 2022-08-17 | 2022-11-25 | 山东科技大学 | Underground CO (carbon monoxide) storage for coal mine 2 Gasification energy-saving device and method |
| CN115388328B (en) * | 2022-08-17 | 2023-11-14 | 山东科技大学 | Underground coal mine CO burying 2 Energy-saving gasification device and method |
| CN115577216A (en) * | 2022-10-13 | 2023-01-06 | 新疆敦华绿碳技术股份有限公司 | Supercritical carbon dioxide pipeline long-distance transmission phase state control system and method |
| CN115577216B (en) * | 2022-10-13 | 2024-04-12 | 新疆敦华绿碳技术股份有限公司 | Supercritical carbon dioxide pipeline long-distance conveying phase state control system and method |
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