CN220015186U - Phase-change concrete supporting system suitable for high-ground-temperature tunnel - Google Patents
Phase-change concrete supporting system suitable for high-ground-temperature tunnel Download PDFInfo
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- CN220015186U CN220015186U CN202321011533.0U CN202321011533U CN220015186U CN 220015186 U CN220015186 U CN 220015186U CN 202321011533 U CN202321011533 U CN 202321011533U CN 220015186 U CN220015186 U CN 220015186U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000012806 monitoring device Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 2
- 238000009413 insulation Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 8
- 230000006378 damage Effects 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 abstract description 2
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- 238000004146 energy storage Methods 0.000 abstract 1
- 239000012782 phase change material Substances 0.000 abstract 1
- 239000012071 phase Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 6
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 239000011435 rock Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 238000012423 maintenance Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- 238000009423 ventilation Methods 0.000 description 1
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model relates to a phase-change concrete supporting system suitable for a high-ground-temperature tunnel, which comprises a phase-change concrete supporting structure and a ground source heat pump system. The phase-change concrete supporting structure is arranged on a high-temperature section and consists of phase-change concrete, a temperature sensor and a temperature display, wherein the phase-change sensor can monitor the temperature of the phase-change concrete supporting structure in real time and display the average temperature on the temperature display; the ground source heat pump system consists of a water pump, a main water pipe and a plurality of groups of heat exchange pipes. In the running process of the system, the operation mode of the system is optimized and regulated through linkage feedback of the average temperature and the phase-change temperature range of the phase-change concrete supporting structure, so that sustainable operation of the system is realized. According to the utility model, by combining the phase-change concrete with the ground source heat pump technology, the heat insulation and energy storage characteristics of the phase-change material and the energy operation characteristics of the ground source heat pump technology are comprehensively utilized, and the engineering heat damage control and the geothermal energy extraction and utilization of the high-ground-temperature tunnel are realized.
Description
Technical Field
The utility model relates to a multifunctional composite tunnel supporting system, in particular to a phase-change concrete supporting system suitable for a high-ground-temperature tunnel.
Background
The tunnel is built, so that the method is an important method for overcoming the height obstacle and improving the transportation efficiency. With the great development of Chinese and western traffic in China, a large number of tunnels with large burial depths and long mileage are formed in the region, and the high-ground-temperature environment becomes a common and huge engineering problem in the tunnel construction process. The high ground temperature environment not only causes construction environment abominable, greatly reduces the efficiency of construction, can cause the influence to structure security simultaneously, for example: temperature stress generated by huge temperature change in the supporting structure, material performance degradation of the supporting material caused by the fact that the maintenance condition is not up to standard, and the like. At present, a heat-insulating and heat-dissipating support structure form of a high-ground-temperature tunnel has been partially innovated, for example, patent CN104594921a discloses a support structure for dissipating heat by utilizing air in a pipeline; patent CN108561162a discloses a structural form for cooling by using air in a pipeline; patent CN110145345a discloses a structural form for realizing ventilation in a hole by a transverse connecting pipe so as to reduce the temperature; patent number CN109763844a discloses a thermal insulation method for effectively isolating heat transfer from surrounding rock through a telescopic thermal insulation layer. In these forms, geothermal energy is considered a thermal hazard, and thus a large amount of green geothermal energy resources in the high-temperature tunnel are discharged or wasted.
How to reasonably and effectively treat the geothermal energy in the high-ground-temperature tunnel, so that the problem of engineering heat damage caused by high ground temperature can be solved, and meanwhile, the abundant geothermal energy resources stored in the tunnel can be utilized, thus the method is a problem worthy of deep thinking. Patent CN109944626a first tried, which discloses a tunnel phase-change cold-storage cooling system, which stores and extracts geothermal energy of a high temperature section through a phase-change energy plate and conveys the geothermal energy to a hole section to melt ice and snow, but the design cannot quantitatively control the environmental temperature of the high temperature section, and meanwhile, the cooling efficiency is low.
In addition, the heat insulation and energy reduction aspects of the prior phase-change concrete house enclosure structure have been promoted more. The material can effectively store heat energy by utilizing huge phase change latent heat during phase change of the material, thereby playing a role in heat insulation and temperature control. Meanwhile, the preparation technology of the material is relatively mature, and the concrete material with the phase-change heat storage function and the preparation method can be prepared according to different combinations of phase-change ranges and phase-change initial temperatures and engineering requirements, as disclosed in CN 112408904A.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a phase-change concrete supporting system suitable for a high-ground-temperature tunnel, wherein the phase-change concrete is applied to a tunnel supporting structure to store surrounding rock heat, and a ground source heat pump system is used for extracting, transporting and utilizing heat energy stored in the supporting structure and supplying energy to a tunnel entrance section heat preservation, road ice melting and snow melting or nearby buildings, so that the effective control of the air temperature in the high-ground-temperature tunnel is realized, the problem of engineering heat damage caused by high temperature is solved, and meanwhile, clean geothermal energy resources are utilized.
The aim of the utility model can be achieved by the following technical scheme:
the phase-change concrete supporting system suitable for the high-ground-temperature tunnel comprises a phase-change concrete supporting structure and a ground source heat pump system;
the phase-change concrete supporting structure is arranged at a high-temperature section in the tunnel, and the phase-change concrete supporting structure is filled with phase-change concrete;
the phase-change concrete supporting structure is provided with a temperature monitoring device for monitoring the temperature of the phase-change concrete supporting structure;
the phase-change concrete supporting structure is used for storing heat of a high-temperature section in a tunnel, and the heat is secondarily utilized through the ground source heat pump system.
Further, the temperature monitoring device comprises a temperature sensor;
the temperature sensor is arranged in the phase-change concrete supporting structure.
Further, the temperature sensors at least comprise three temperature sensors, namely a first temperature sensor, a second temperature sensor and a third temperature sensor;
the first temperature sensor and the second temperature sensor are respectively arranged in the side wall body of the phase-change concrete supporting structure, and the third temperature sensor is arranged in the vault of the phase-change concrete supporting structure.
Further, the temperature monitoring device further comprises a temperature display, and the temperature display is connected with the temperature sensor.
Further, the ground source heat pump system comprises a water pump, a main water pipe and a plurality of heat exchange pipes, and a closed circulation system is formed among the water pump, the main water pipe and the plurality of heat exchange pipes.
Further, the heat exchange tube in the ground source heat pump system comprises a first heat exchange tube, the first heat exchange tube is buried in the phase-change concrete supporting structure, the first end of the first heat exchange tube is connected with the water pump, and the second end of the first heat exchange tube is connected with the main water tube;
the water pump is used for pumping cold water into the first heat exchange tube, and the first heat exchange tube is used for absorbing heat in the phase-change concrete supporting structure to enable the temperature of the cold water to rise, so that heat energy in the phase-change concrete supporting structure is extracted.
Further, the heat exchange tubes are distributed in a serpentine annular mode, and two ends of the heat exchange tubes are connected with the water pump or the main water pipe to form a closed circulation system.
Further, the tail end of the phase-change concrete supporting structure is connected with a heat structure, a heat exchange tube is buried in the heat structure, and a closed loop is formed with the water pump and the main water tube.
Further, the heat-using structure includes, but is not limited to, a general concrete support structure, a ground, and a building.
Further, the phase-change concrete supporting structure is an arch structure.
Compared with the prior art, the utility model has the following beneficial effects:
the phase-change energy tunnel system suitable for the high-ground-temperature tunnel is designed and obtained through the combination of the phase-change concrete and the ground source heat pump technology; the utility model fully utilizes the phase-change latent heat of the phase-change concrete, stores the geothermal energy through the phase-change concrete supporting structure arranged in a high-temperature section, reduces the heat transferred to the environment, further regulates and controls the ambient temperature in the tunnel, and solves the problem of engineering heat injury caused by the high-temperature.
According to the utility model, the plurality of temperature sensors are arranged in the phase-change concrete supporting structure, the average temperature of the phase-change concrete supporting structure is calculated, and the operation mode is regulated and controlled according to the relation between the average temperature of the phase-change concrete and the phase-change temperature range, so that sustainable operation is better realized.
Drawings
FIG. 1 is a schematic diagram of the system configuration of the present utility model;
FIG. 2 is a cross-sectional view of a phase change concrete support structure of the present utility model;
FIG. 3 is a plan view of the layout of heat exchange tubes in the phase change concrete support structure of the utility model;
FIG. 4 is a cross-sectional view of a heating section according to the present utility model;
the corresponding relation between the reference numbers and the components in the figures is as follows: 1-a phase-change concrete supporting structure; 2-a first heat exchange tube; 3-a temperature sensor; 4-a temperature display; 5-high ground temperature section; 6-a water pump; 7-a common concrete supporting structure; 8-a second heat exchange tube; 9-a hole heat preservation section; 10-a third heat exchange tube; 11-an ice and snow road surface section outside the hole; 12-fourth heat exchange tube; 13-nearby buildings; 14-phase-change concrete; 15-ordinary concrete; 16-main water pipe.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
Example 1
As shown in fig. 1, which is a preferred embodiment of the present utility model, a phase-change concrete support system suitable for a high-ground-temperature tunnel comprises a phase-change concrete support structure 1, a first heat exchange tube 2, a temperature sensor 3, a temperature display 4, a water pump 6 and a main water pipe 16;
as a preferred embodiment, the present embodiment further comprises a second heat exchange tube 8, a third heat exchange tube 10, a fourth heat exchange tube 12;
in the embodiment, the phase-change concrete supporting structure 1 is arranged on a high-temperature section 5 in a tunnel, a hole thermal insulation section 9 and an out-hole ice and snow pavement section 11 are sequentially connected behind the high-temperature section 5, a common concrete supporting structure 7 is arranged on the hole thermal insulation section 9, and the common concrete supporting structure 7 is filled with common concrete 15; in other embodiments, other ground or tunnel structures may be attached behind the phase change concrete support structure 1.
In this embodiment, the second heat exchange tube 8 is embedded in the ordinary concrete supporting structure 7 on the tunnel portal heat preservation section 9, the third heat exchange tube 10 is embedded under the extra-tunnel ice and snow road surface section 11, and the fourth heat exchange tube 12 is arranged in the nearby building 13.
In this embodiment, the system stores the thermal energy of the height Wen Weiyan in the phase-change concrete supporting structure 1, the temperature sensor 3 is arranged in the phase-change concrete 14 in the phase-change concrete supporting structure 1, and the temperature of the phase-change concrete supporting structure 1 is monitored by the temperature sensor 3, so as to control the on-off state of the water pump 6.
When the water pump 6 is in an on state, cold water enters the first heat exchange tube 2 embedded in the phase-change concrete supporting structure 1 through the main water tube 16 to absorb heat, so that the water temperature is increased, and the heat energy in the phase-change concrete supporting structure 1 is extracted;
the water with the temperature rising enters the main water pipe 16 again, and hot water is transported to the second heat exchange pipe 8 buried in the hole thermal insulation section 9, the third heat exchange pipe 10 buried in the ice and snow road surface section 11 outside the hole and the fourth heat exchange pipe 12 buried in the nearby building 13 in sequence through the water pump 6 to release heat energy, so that the functions of hole thermal insulation, road surface ice and snow melting and building heating are respectively realized.
When the water pump 6 is in a closed state, no water flow moves in the heat exchange tube, and the phase-change concrete supporting structure 1 absorbs heat energy transferred by surrounding rocks to store the heat energy, so that the temperature adjustment of the high-temperature section 5 in the tunnel is realized, and the engineering heat injury is reduced.
As shown in fig. 2, the phase-change concrete supporting structure 1 is installed in a high-temperature section 5 in a tunnel, and consists of a temperature sensor 3, a temperature display 4 and phase-change concrete 14.
In this embodiment, the total number of temperature sensors is 3, and the temperature sensors are respectively installed in the left side wall, the vault and the right side wall of the phase-change concrete supporting structure 1, so that the temperatures at three positions can be monitored in real time. The temperature sensor 3 is connected with the temperature display 4 and feeds back real-time temperature data.
As shown in fig. 3, the first heat exchange tube 2 embedded in the phase-change concrete supporting structure 1 is arranged on the wall of the hole in a serpentine annular mode, and is connected with the main water tube 16 at two ends of the heat exchange tube to form a closed loop.
As shown in fig. 4, in the tunnel portal heat-insulating section 9, the water having absorbed heat in the high-temperature section 5 flows into the second heat exchange tube 8 buried in the ordinary concrete 15 and the third heat exchange tube 10 buried under the extra-tunnel icy and snowy road surface section 11 to release heat, thereby realizing the tunnel portal heat-insulating and the ice and snow melting of the extra-tunnel road surface.
The working principle of the utility model is as follows: the phase change range of the phase change concrete is reasonably designed, and the huge latent heat generated in the phase change process of the phase change concrete is utilized, so that the heat energy transferred by surrounding rocks in a high-ground-temperature tunnel can be effectively stored, the heat energy transferred to the environment in the tunnel is further reduced, and the heat insulation and temperature control functions are realized; when the ground source heat pump system is started, the heat energy stored in the phase-change concrete supporting structure is extracted through the heat exchange tubes and used for melting ice and snow or heating outside the tunnel, and the phase-change concrete releases the heat energy through liquid-solid phase change, so that the heat taking efficiency is improved; when the ground source heat pump system is turned off, the phase-change concrete absorbs heat transferred from the surrounding rock and stores the heat energy in the phase-change concrete structure through a process of changing from solid phase to liquid phase. The circulation can effectively control the temperature in the hole in the high-ground-temperature environment, solve the problem of engineering heat damage, and simultaneously can utilize the green and clean geothermal energy resources.
Example 2
As an alternative implementation manner, in this embodiment, a total of 3 temperature sensors are respectively installed in the left side wall, the vault and the right side wall of the phase-change concrete supporting structure 1, so that temperatures at three positions can be monitored in real time. The temperature sensor 3 is connected with the temperature display 4 and feeds back real-time temperature data.
The temperature display 4 is a visual device with a screen, and can simultaneously display real-time temperatures measured by the temperature sensors 3 arranged at three positions, and calculate an average value T of the temperatures at the three positions ave And displayed on a screen, thereby realizing the temperature monitoring of the phase-change concrete supporting structure 1.
When the phase-change concrete support system is specifically implemented, the heat damage control and the heat energy extraction are realized in a high-ground-temperature tunnel by adopting the phase-change concrete support system provided by the utility model, and the phase-change concrete support system comprises the following steps:
and step 1, setting a reasonable phase change temperature range of the phase change concrete according to the required construction environment temperature in the hole.
And 2, after tunnel excavation, leveling, installing a heat exchange tube, connecting the heat exchange tube with a main water pipe to form a closed loop, and installing a temperature sensor at a designated position.
And step 3, applying phase-change concrete to form a phase-change concrete supporting structure.
And 4, embedding heat exchange tubes into the common concrete lining structure of the tunnel portal section, the lower part of the pavement and the nearby buildings according to the requirement, and connecting the heat exchange tubes with a water pump to form a closed loop.
And 5, controlling a switch of the ground source heat pump system according to the set operation mode, and optimizing the operation mode according to the relation between the monitoring temperature of the phase-change concrete and the phase-change temperature range.
While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.
Claims (10)
1. The phase-change concrete supporting system is suitable for the high-ground-temperature tunnel and is characterized by comprising a phase-change concrete supporting structure (1) and a ground source heat pump system;
the phase-change concrete supporting structure (1) is arranged on a high-temperature section (5) in a tunnel, and phase-change concrete (14) is filled in the phase-change concrete supporting structure (1);
the phase-change concrete supporting structure (1) is provided with a temperature monitoring device for monitoring the temperature of the phase-change concrete supporting structure (1);
the phase-change concrete supporting structure (1) is used for storing heat of a high-temperature section (5) in a tunnel, and the heat is secondarily utilized through the ground source heat pump system.
2. A phase change concrete support system suitable for high ground temperature tunnels according to claim 1, characterized in that the temperature monitoring device comprises a temperature sensor (3);
the temperature sensor (3) is arranged in the phase-change concrete supporting structure (1).
3. The phase change concrete support system suitable for high ground temperature tunnels according to claim 2, wherein the temperature sensors (3) comprise at least three, namely a first temperature sensor, a second temperature sensor and a third temperature sensor;
the first temperature sensor and the second temperature sensor are respectively arranged in the side wall body of the phase-change concrete supporting structure (1), and the third temperature sensor is arranged in the vault of the phase-change concrete supporting structure (1).
4. A phase change concrete support system suitable for high ground temperature tunnels according to claim 2, wherein the temperature monitoring device further comprises a temperature display (4), the temperature display (4) being connected to the temperature sensor (3).
5. The phase-change concrete support system suitable for the high-ground-temperature tunnel according to claim 1, wherein the ground source heat pump system comprises a water pump (6), a main water pipe (16) and a plurality of heat exchange pipes, and a closed circulation system is formed among the water pump (6), the main water pipe (16) and the plurality of heat exchange pipes.
6. The phase change concrete support system suitable for the high-ground-temperature tunnel according to claim 5, wherein the heat exchange tubes in the ground source heat pump system comprise first heat exchange tubes (2), the first heat exchange tubes (2) are buried in the phase change concrete support structure (1), the first ends of the first heat exchange tubes (2) are connected with the water pump (6), and the second ends of the first heat exchange tubes are connected with the main water pipe (16);
the water pump (6) is used for pumping cold water into the first heat exchange tube (2), and the first heat exchange tube (2) is used for absorbing heat in the phase-change concrete supporting structure (1) to enable the temperature of the cold water to rise, so that heat energy in the phase-change concrete supporting structure (1) is extracted.
7. The phase-change concrete support system suitable for the high-ground-temperature tunnel according to claim 5, wherein the heat exchange tubes are circumferentially distributed in a serpentine shape, and two ends of the heat exchange tubes are connected with the water pump (6) or the main water pipe (16) to form a closed circulation system.
8. The phase change concrete support system for high-ground-temperature tunnels according to claim 5, wherein the end of the phase change concrete support structure (1) is connected with a heat structure in which heat exchange tubes are embedded and form a closed loop with the water pump (6) and the main water pipe (16).
9. A phase change concrete support system for high ground temperature tunnels according to claim 8, wherein said heat consuming structure includes, but is not limited to, plain concrete support structures, floors and buildings.
10. A phase change concrete support system suitable for high ground temperature tunnels according to claim 1, characterized in that the phase change concrete support structure (1) is an arch structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321011533.0U CN220015186U (en) | 2023-04-28 | 2023-04-28 | Phase-change concrete supporting system suitable for high-ground-temperature tunnel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321011533.0U CN220015186U (en) | 2023-04-28 | 2023-04-28 | Phase-change concrete supporting system suitable for high-ground-temperature tunnel |
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| CN220015186U true CN220015186U (en) | 2023-11-14 |
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| CN202321011533.0U Active CN220015186U (en) | 2023-04-28 | 2023-04-28 | Phase-change concrete supporting system suitable for high-ground-temperature tunnel |
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| CN (1) | CN220015186U (en) |
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2023
- 2023-04-28 CN CN202321011533.0U patent/CN220015186U/en active Active
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