CN111005500A - Subway station bearing column heat dissipation system and method applying loop heat pipes - Google Patents
Subway station bearing column heat dissipation system and method applying loop heat pipes Download PDFInfo
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- CN111005500A CN111005500A CN201911223703.XA CN201911223703A CN111005500A CN 111005500 A CN111005500 A CN 111005500A CN 201911223703 A CN201911223703 A CN 201911223703A CN 111005500 A CN111005500 A CN 111005500A
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims description 6
- 239000007788 liquid Substances 0.000 claims abstract description 178
- 239000012782 phase change material Substances 0.000 claims abstract description 98
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000002689 soil Substances 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 28
- 239000007787 solid Substances 0.000 claims description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 229910021529 ammonia Inorganic materials 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- 239000011208 reinforced composite material Substances 0.000 claims description 2
- 239000011819 refractory material Substances 0.000 claims 3
- 238000001816 cooling Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 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
- 239000004567 concrete Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
- F28D15/046—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure characterised by the material or the construction of the capillary structure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0056—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using solid heat storage material
-
- 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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
A subway station bearing column heat dissipation system applying loop heat pipes belongs to the field of underground space safety. The invention uses the tunnel bearing column as a carrier, uses the tunnel emergent fire as a background, and applies the loop heat pipe and the phase-change material to solve the problem that the bearing column collapses because of the strength reduction caused by the short-time large-scale heating of the emergent fire. The main components comprise a liquid compensator, an evaporator, a liquid pipeline, a condenser coiled pipe, a phase change material layer and an underground municipal water supply network branch. When a fire disaster happens to the tunnel, the phase change material layer covered on the pillar absorbs instant heat; meanwhile, the heat absorbed by the working medium in the evaporator buried in the phase-change material layer is transferred to the condenser in the soil layer, the coiled pipe of the condenser is connected with a municipal pipe network branch, and the heat is taken away by water flow flowing in the pipe network. The system can delay or even avoid collapse of the bearing column of the subway station due to fire during fire, provide precious time for subsequent fire extinguishing and disaster relief work, and reduce property loss and casualties.
Description
Technical Field
The invention relates to a subway station bearing column heat dissipation system and method applying loop heat pipes, and belongs to the field of underground space safety.
Background
In recent years, the traffic industry is rapidly developed, the per-capita automobile holding capacity is greatly improved, and accordingly, the traffic jam affects the life, and the road traffic is difficult to satisfy the traveling of people. The problems of traffic transportation are greatly relieved due to the underground tunnel and the urban rail transit, and the urban rail transit becomes the first choice for urban resident trip. Therefore, the safety problems of subways and tunnels are also of great importance.
At present, fire is a main factor influencing and threatening the safe operation of a tunnel, and in addition to endeavoring to take fire-fighting measures to avoid the fire, people pay more and more attention to how to extinguish the fire and ensure the safety of the tunnel when the fire occurs. The tunnel heel post is first when making a rush in the conflagration, and the tradition mixes earth post and because of the material problem, is heated and collapses easily and cause the disaster. In this case, if it is ensured that the temperature of the load-bearing column does not rise and the strength does not fall in the event of a fire, there is a chance that the load-bearing column will not collapse, which in turn reduces casualties and economic losses. The prior literature is reviewed to find no solution to the problem of thermal collapse of the load bearing column. The invention is oriented to the bearing column, and adds the phase-change material and the loop heat pipe to resist and eliminate external heat on the basis of the traditional concrete column, thereby improving the survival capability of the bearing column in fire, greatly degrading the fire hazard and providing more precious time for subsequent disaster relief.
The system operates in case of sudden fire, on one hand, the phase-change material attached to the outer part of the bearing column absorbs the instantaneous heat of the fire, and the bearing column is prevented from being heated instantly, and concrete expands to collapse; on the other hand, a loop heat pipe in the phase-change material receives heat to the evaporator, the working medium in the evaporator is heated and evaporated, the steam enters the condenser along with the pipeline, is liquefied in the condenser and releases heat, and returns to the compensator under the action of capillary force generated by the capillary core in the evaporator; in addition, the snakelike condenser is connected with a city pipe network phase branch, and heat emitted by the condenser is absorbed by water flow in the pipeline and taken away along with the water flow, so that heat of the bearing column accepted by the phase-change material is absorbed and emitted circularly, and the phase-change material is ensured to be recycled.
Disclosure of Invention
The invention aims to provide a subway station bearing column heat dissipation system and a heat dissipation method applying loop heat pipes.
Comprises a first liquid compensator 1, a first load-bearing column 2, a first load-bearing column first liquid pipeline 3, a first evaporator 4, a first load-bearing column high-temperature resistant material layer 5, a first load-bearing column phase-change material layer 6, a first load-bearing column second liquid pipeline 7, a first steam pipeline 8, a first condenser 9, a first condenser serpentine 10, a second liquid compensator 11, a second load-bearing column 12, a second load-bearing column first liquid pipeline 13, a second evaporator 14, a second load-bearing column high-temperature resistant material layer 15, a second load-bearing column phase-change material layer 16, a second load-bearing column second liquid pipeline 17, a second steam pipeline 18, a second condenser 19, a second condenser serpentine 20, a third liquid compensator 21, a third load-bearing column 22, a third load-bearing column first liquid pipeline 23, a third evaporator 24, a third load-bearing column high-temperature resistant material layer 25, a third load-bearing column phase-change material layer 26, The third bearing column second liquid pipeline 27, the third steam pipeline 28, the third condenser 29, the third condenser coiled pipe 30, the underground municipal pipe network water outlet interface 31, the underground water pipe 32 and the underground municipal pipe network water inlet interface 33;
wherein the first liquid compensator 1, the first load-bearing column first liquid pipeline 3, the first evaporator 4, the first load-bearing column second liquid pipeline 7 and the first vapor pipeline 8 are embedded in the first load-bearing column phase-change material layer 6, the second liquid compensator 11, the second load-bearing column first liquid pipeline 13, the second evaporator 14, the second load-bearing column second liquid pipeline 17 and the second vapor pipeline 18 are embedded in the second load-bearing column phase-change material layer 16, and the third liquid compensator 21, the third load-bearing column first liquid pipeline 23, the third evaporator 24, the third load-bearing column second liquid pipeline 27 and the third vapor pipeline 28 are embedded in the third load-bearing column phase-change material layer 26;
an outlet of the first liquid compensator 1 is connected with an inlet of a first load-bearing column first liquid pipeline 3, an outlet of the first load-bearing column first liquid pipeline 3 is connected with an inlet of a first evaporator 4, an outlet of the first evaporator 4 is connected with an inlet of a first steam pipeline 8, an outlet of the first steam pipeline 8 is connected with an inlet of a first condenser 9, an outlet of the first condenser 9 is connected with an inlet of a first load-bearing column second liquid pipeline 7, and an outlet of the first load-bearing column second liquid pipeline 7 is connected with an inlet of the first liquid compensator 1;
an outlet of the second liquid compensator 11 is connected to an inlet of a second load column first liquid line 13, an outlet of the second load column first liquid line 13 is connected to an inlet of a second evaporator 14, an outlet of the second evaporator 14 is connected to an inlet of a second vapor line 18, an outlet of the second vapor line 18 is connected to an inlet of a second condenser 19, an outlet of the second condenser 19 is connected to an inlet of a second load column second liquid line 17, and an outlet of the second load column second liquid line 17 is connected to an inlet of the second liquid compensator 11;
the outlet of the third liquid compensator 21 is connected to the inlet of the third heel column first liquid line 23, the outlet of the third heel column first liquid line 23 is connected to the inlet of the third evaporator 24, the outlet of the third evaporator 24 is connected to the inlet of the third vapor line 28, the outlet of the third vapor line 28 is connected to the inlet of the third condenser 29, the outlet of the third condenser 29 is connected to the inlet of the third heel column second liquid line 27, and the outlet of the third heel column second liquid line 27 is connected to the inlet of the third liquid compensator 21;
the first bearing column phase-change material layer 6 wraps the surface of the first bearing column 2, the first bearing column high-temperature-resistant material layer 5 wraps the surface of the first bearing column phase-change material layer 6, the second bearing column phase-change material layer 16 wraps the surface of the second bearing column 12, the second bearing column high-temperature-resistant material layer 15 wraps the surface of the second bearing column phase-change material layer 16, the third bearing column phase-change material layer 26 wraps the surface of the third bearing column 22, and the third bearing column high-temperature-resistant material layer 25 wraps the surface of the third bearing column phase-change material layer 26.
When a fire disaster occurs in the tunnel, the phase-change material in the first bearing column phase-change material layer 6 covering the surface of the first bearing column 2 absorbs heat, and the solid state is converted into a liquid state; the phase-change material in the first bearing column phase-change material layer 6 transfers heat to the first evaporator 4, working medium in the first evaporator 4 is heated and evaporated, steam enters the first condenser 9 from the first steam pipeline 8, heat is released to the underground water pipe 32 in the first condenser coiled pipe 10 and is condensed into liquid, and the liquid returns to the first liquid compensator 1 through the first bearing column second liquid pipeline 7 under the action of capillary force in the first evaporator 4 and then returns to the first evaporator 4 through the first bearing column first liquid pipeline 3;
when a fire disaster occurs in the tunnel, the phase-change material in the second bearing column phase-change material layer 16 covering the surface of the second bearing column 12 absorbs heat, and the solid state is converted into a liquid state; the phase change material in the second load-bearing column phase change material layer 16 transfers heat to the second evaporator 14, the working medium is heated and evaporated in the second evaporator 14, the steam enters the second condenser 19 from the second steam pipeline 18, the heat is released to the underground water pipe 32 in the second condenser coiled pipe 20 and is condensed into liquid, and the liquid returns to the second liquid compensator 11 through the second load-bearing column second liquid pipeline 17 under the action of capillary force in the second evaporator 14 and then returns to the second evaporator 14 through the second load-bearing column first liquid pipeline 13;
when a fire disaster occurs in the tunnel, the phase-change material in the third load-bearing column phase-change material layer 26 covering the surface of the third load-bearing column 22 absorbs heat, and the solid state is converted into a liquid state; the phase change material in the third load-bearing column phase change material layer 26 transfers heat to the third evaporator 24, the phase change material in the third load-bearing column phase change material layer 26 covering the surface of the third load-bearing column 22 absorbs heat, when the heat is applied to the third evaporator 24, the working medium is heated and evaporated in the third evaporator 24, the vapor enters the third condenser 29 from the third vapor pipeline 28, the heat is released into the underground water pipe 32 by the third condenser coil 30 and is condensed into liquid, and the liquid returns to the third liquid compensator 21 through the third load-bearing column second liquid pipeline 27 under the action of capillary force in the third evaporator 24 and then returns to the third evaporator 24 through the third load-bearing column first liquid pipeline 23;
the heat emitted from the first condenser coiled pipe 10, the second condenser coiled pipe 20 and the third condenser coiled pipe 30 is carried to the underground municipal pipe network water inlet interface 33 by the flowing of the water in the underground water pipe 32 connected with the underground municipal pipe network water outlet interface 31.
Working media in the first liquid compensator 1, the first load-bearing column first liquid pipeline 3, the first evaporator 4, the first load-bearing column second liquid pipeline 7, the first steam pipeline 8, the first condenser 9, the first condenser coiled pipe 10, the second liquid compensator 11, the second load-bearing column first liquid pipeline 13, the second evaporator 14, the second load-bearing column second liquid pipeline 17, the second steam pipeline 18, the second condenser 19, the second condenser coiled pipe 20, the third liquid compensator 21, the third load-bearing column first liquid pipeline 23, the third load-bearing column second liquid pipeline 27, the third steam pipeline 28, the third condenser 29, the third condenser coiled pipe 30 and the third evaporator 24 are all pure ammonia.
The first evaporator 4, the second evaporator 14 and the third evaporator 24 contain capillary cores, and can drive liquid to flow back.
The first condenser coil 10 is installed at the center of the first condenser 9, the second condenser coil 20 is installed at the center of the second condenser 19, the third condenser coil 30 is installed at the center of the third condenser 29, and the first condenser coil 10, the second condenser coil 20, and the third condenser coil 30 are wound on the underground water pipe 32.
The underground municipal pipe network water outlet port 31, the underground water pipe 32 and the underground municipal pipe network water inlet port 33 are all positioned in underground soil right below the first bearing column 2, the second bearing column 12 and the third bearing column 22.
The first load-bearing column phase-change material layer 6, the second load-bearing column phase-change material layer 16 and the third load-bearing column phase-change material layer 26 are made of hydrated inorganic salt phase-change materials.
The first bearing column high-temperature-resistant material layer 5, the second bearing column high-temperature-resistant material layer 15 and the third bearing column high-temperature-resistant material layer 25 are made of carbon fiber reinforced composite materials.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Reference designations in FIG. 1: 1. the liquid phase-change evaporator comprises a first liquid compensator, 2, a first bearing column, 3, a first bearing column first liquid pipeline, 4, a first evaporator, 5, a first bearing column high-temperature resistant material layer, 6, a first bearing column phase-change material layer, 7, a first bearing column second liquid pipeline, 8, a first steam pipeline, 9, a first condenser, 10, a first condenser coil, 11, a second liquid compensator, 12, a second bearing column, 13, a second bearing column first liquid pipeline, 14, a second evaporator, 15, a second bearing column high-temperature resistant material layer, 16, a second bearing column phase-change material layer, 17, a second bearing column second liquid pipeline, 18, a second steam pipeline, 19, a second condenser, 20, a second condenser coil, 21, a third liquid compensator, 22, a third bearing column, 23, a third bearing column first liquid pipeline, 24, a third evaporator, 23, 25. 26 parts of a third bearing column high-temperature-resistant material layer, 27 parts of a third bearing column phase-change material layer, 27 parts of a third bearing column second liquid pipeline, 28 parts of a third steam pipeline, 29 parts of a third condenser, 30 parts of a third condenser coiled pipe, 31 parts of an underground municipal pipe network water outlet interface, 32 parts of an underground water pipe, 33 parts of an underground municipal pipe network water inlet interface.
Fig. 2 is a top view of the present invention.
Reference number designation in figure 2: 1. the liquid phase change material comprises a first liquid compensator, 2, a first bearing column, 3, a first bearing column first liquid pipeline, 4, a first evaporator, 5, a first bearing column high-temperature resistant material layer, 6, a first bearing column phase change material layer, 11, a second liquid compensator, 12, a second bearing column, 13, a second bearing column first liquid pipeline, 14, a second evaporator, 15, a second bearing column high-temperature resistant material layer, 16, a second bearing column phase change material layer, 21, a third liquid compensator, 22, a third bearing column, 23, a third bearing column first liquid pipeline, 24, a third evaporator, 25, a third bearing column high-temperature resistant material layer and 26, a third bearing column phase change material layer.
Detailed Description
The present invention is illustrated in an embodiment with three load-bearing columns, as shown in fig. 1. A subway station bearing column heat dissipation system applying loop heat pipes and a heat dissipation method mainly comprise a first liquid compensator 1, a first bearing column 2, a first bearing column first liquid pipeline 3, a first evaporator 4, a first bearing column high-temperature-resistant material layer 5, a first bearing column phase-change material layer 6, a first bearing column second liquid pipeline 7, a first steam pipeline 8, a first condenser 9, a first condenser coiled pipe 10, a second liquid compensator 11, a second bearing column 12, a second bearing column first liquid pipeline 13, a second evaporator 14, a second bearing column high-temperature-resistant material layer 15, a second bearing column phase-change material layer 16, a second bearing column second liquid pipeline 17, a second steam pipeline 18, a second condenser 19, a second condenser coiled pipe 20, a third liquid compensator 21, a third bearing column 22, a third bearing column first liquid pipeline 23, a third bearing column second liquid pipeline 17, a third bearing column high-temperature-resistant material layer 18, a third condenser coiled pipe 20, a third liquid compensator 21, a third bearing column first liquid pipeline 23, a second condenser, The system comprises a third evaporator 24, a third bearing column high-temperature-resistant material layer 25, a third bearing column phase-change material layer 26, a third bearing column second liquid pipeline 27, a third steam pipeline 28, a third condenser 29, a third condenser coiled pipe 30, an underground municipal pipe network water outlet interface 31, an underground water pipe 32 and an underground municipal pipe network water inlet interface 33.
When a fire disaster occurs in the tunnel, the phase-change material in the first bearing column phase-change material layer 6 covering the surface of the first bearing column 2 absorbs heat, and the solid state is converted into a liquid state; the phase-change material in the first bearing column phase-change material layer 6 transfers heat to the first evaporator 4, working medium in the first evaporator 4 is heated and evaporated, steam enters the first condenser 9 from the first steam pipeline 8, heat is released to the underground water pipe 32 in the first condenser coiled pipe 10 and is condensed into liquid, and the liquid returns to the first liquid compensator 1 through the first bearing column second liquid pipeline 7 under the action of capillary force in the first evaporator 4 and then returns to the first evaporator 4 through the first bearing column first liquid pipeline 3;
when a fire disaster occurs in the tunnel, the phase-change material in the second bearing column phase-change material layer 16 covering the surface of the second bearing column 12 absorbs heat, and the solid state is converted into a liquid state; the phase change material in the second load-bearing column phase change material layer 16 transfers heat to the second evaporator 14, the working medium is heated and evaporated in the second evaporator 14, the steam enters the second condenser 19 from the second steam pipeline 18, the heat is released to the underground water pipe 32 in the second condenser coiled pipe 20 and is condensed into liquid, and the liquid returns to the second liquid compensator 11 through the second load-bearing column second liquid pipeline 17 under the action of capillary force in the second evaporator 14 and then returns to the second evaporator 14 through the second load-bearing column first liquid pipeline 13;
when a fire disaster occurs in the tunnel, the phase-change material in the third load-bearing column phase-change material layer 26 covering the surface of the third load-bearing column 22 absorbs heat, and the solid state is converted into a liquid state; the phase change material in the third load-bearing column phase change material layer 26 transfers heat to the third evaporator 24, the phase change material in the third load-bearing column phase change material layer 26 covering the surface of the third load-bearing column 22 absorbs heat, when the heat is applied to the third evaporator 24, the working medium is heated and evaporated in the third evaporator 24, the vapor enters the third condenser 29 from the third vapor pipeline 28, the heat is released into the underground water pipe 32 by the third condenser coil 30 and is condensed into liquid, and the liquid returns to the third liquid compensator 21 through the third load-bearing column second liquid pipeline 27 under the action of capillary force in the third evaporator 24 and then returns to the third evaporator 24 through the third load-bearing column first liquid pipeline 23;
the heat emitted from the first condenser coiled pipe 10, the second condenser coiled pipe 20 and the third condenser coiled pipe 30 is carried to an underground municipal pipe network water inlet interface 33 by the flowing of water in an underground water pipe 32 connected with an underground municipal pipe network water outlet interface 31;
the low-temperature water flows out from the water outlet interface 31 of the underground municipal pipe network and enters the underground water pipe 32, and the low-temperature water in the underground water pipe 32 absorbs the heat transferred by the first condenser coiled pipe 10, the second condenser coiled pipe 20 and the third condenser coiled pipe 30, then the temperature is increased, and the low-temperature water flows into the water inlet interface 33 of the underground municipal pipe network.
The phase-change material heat dissipation device is fully combined with the traditional building materials, the phase-change material is used for receiving heat transmitted by high temperature of fire, the collapse caused by strength reduction due to overheating of the bearing column material is avoided, and the safety performance and the fire resistance are improved on the basis of the original properties of the column. When a fire disaster occurs in the tunnel, the heat is absorbed by the phase-change material and is transferred to the loop heat pipe evaporator, the working medium in the evaporator is heated and evaporated, the generated gas enters the condenser through the steam pipeline, the heat is released in the condenser and is condensed into liquid, and the liquid returns to the compensator under the action of capillary force generated by the capillary wick in the evaporator; meanwhile, the snakelike condenser pipe is connected with an underground municipal pipe network branch, and heat is taken away by water flow flowing through the pipe network, so that heat received by the phase-change material is smoothly transferred. The system greatly enhances the capability of the bearing column to resist high temperature of fire, is beneficial to evacuation and escape of people and development of subsequent fire extinguishing and disaster relief work, and can effectively reduce property loss and casualties under the condition of fire of a subway station.
Claims (8)
1. The utility model provides an use subway station heel post cooling system of loop heat pipe which characterized in that:
comprises a first liquid compensator (1), a first bearing column (2), a first bearing column first liquid pipeline (3), a first evaporator (4), a first bearing column high-temperature resistant material layer (5), a first bearing column phase-change material layer (6), a first bearing column second liquid pipeline (7), a first steam pipeline (8), a first condenser (9), a first condenser coil pipe (10), a second liquid compensator (11), a second bearing column (12), a second bearing column first liquid pipeline (13), a second evaporator (14), a second bearing column high-temperature resistant material layer (15), a second bearing column phase-change material layer (16), a second bearing column second liquid pipeline (17), a second steam pipeline (18), a second condenser (19), a second condenser coil pipe (20), a third liquid compensator (21), a third bearing column (22), The system comprises a first liquid pipeline (23) of a third bearing column, a third evaporator (24), a high-temperature-resistant material layer (25) of the third bearing column, a phase-change material layer (26) of the third bearing column, a second liquid pipeline (27) of the third bearing column, a third steam pipeline (28), a third condenser (29), a third condenser coil pipe (30), an underground municipal pipe network water outlet interface (31), an underground water pipe (32) and an underground municipal pipe network water inlet interface (33);
wherein, the first liquid compensator (1), the first load-bearing column first liquid pipeline (3), the first evaporator (4), the first load-bearing column second liquid pipeline (7) and the first steam pipeline (8) are buried in the first load-bearing column phase-change material layer (6), the second liquid compensator (11), the second load-bearing column first liquid pipeline (13), the second evaporator (14), the second load-bearing column second liquid pipeline (17) and the second steam pipeline (18) are buried in the second load-bearing column phase-change material layer (16), and the third liquid compensator (21), the third load-bearing column first liquid pipeline (23), the third evaporator (24), the third load-bearing column second liquid pipeline (27) and the third steam pipeline (28) are buried in the third load-bearing column phase-change material layer (26);
the outlet of the first liquid compensator (1) is connected with the inlet of a first load-bearing column first liquid pipeline (3), the outlet of the first load-bearing column first liquid pipeline (3) is connected with the inlet of a first evaporator (4), the outlet of the first evaporator (4) is connected with the inlet of a first steam pipeline (8), the outlet of the first steam pipeline (8) is connected with the inlet of a first condenser (9), the outlet of the first condenser (9) is connected with the inlet of a first load-bearing column second liquid pipeline (7), and the outlet of the first load-bearing column second liquid pipeline (7) is connected with the inlet of the first liquid compensator (1);
the outlet of the second liquid compensator (11) is connected with the inlet of a second load bearing column first liquid pipeline (13), the outlet of the second load bearing column first liquid pipeline (13) is connected with the inlet of a second evaporator (14), the outlet of the second evaporator (14) is connected with the inlet of a second steam pipeline (18), the outlet of the second steam pipeline (18) is connected with the inlet of a second condenser (19), the outlet of the second condenser (19) is connected with the inlet of a second load bearing column second liquid pipeline (17), and the outlet of the second load bearing column second liquid pipeline (17) is connected with the inlet of the second liquid compensator (11);
the outlet of the third liquid compensator (21) is connected to the inlet of a third heel column first liquid line (23), the outlet of the third heel column first liquid line (23) is connected to the inlet of a third evaporator (24), the outlet of the third evaporator (24) is connected to the inlet of a third vapor line (28), the outlet of the third vapor line (28) is connected to the inlet of a third condenser (29), the outlet of the third condenser (29) is connected to the inlet of a third heel column second liquid line (27), and the outlet of the third heel column second liquid line (27) is connected to the inlet of the third liquid compensator (21);
first heel post phase change material layer (6) parcel is on first heel post (2) surface, first heel post refractory material layer (5) parcel is on first heel post phase change material layer (6) surface, second heel post phase change material layer (16) parcel is on second heel post (12) surface, second heel post refractory material layer (15) parcel is on second heel post phase change material layer (16) surface, third heel post phase change material layer (26) parcel is on third heel post (22) surface, third heel post refractory material layer (25) parcel is on third heel post phase change material layer (26) surface.
2. The heat dissipation method of the subway station bearing column heat dissipation system using the loop heat pipe as claimed in claim 1, comprising the steps of:
when a fire disaster occurs in the tunnel, the phase-change material in the first bearing column phase-change material layer (6) covering the surface of the first bearing column (2) absorbs heat, and the solid state is converted into a liquid state; the phase-change material in the first load-bearing column phase-change material layer (6) transfers heat to the first evaporator (4), working medium in the first evaporator (4) is heated and evaporated, steam enters the first condenser (9) from the first steam pipeline (8), heat is released to the underground water pipe (32) in the first condenser coiled pipe (10) and is condensed into liquid, and the liquid returns to the first liquid compensator (1) through the first load-bearing column second liquid pipeline (7) under the action of capillary force in the first evaporator (4) and then returns to the first evaporator (4) through the first load-bearing column first liquid pipeline (3);
when a fire disaster happens to the tunnel, the phase-change material layer (16) of the second bearing column is in a solid state, and when the fire disaster happens to the tunnel, the phase-change material in the phase-change material layer (16) of the second bearing column, which covers the surface of the second bearing column (12), absorbs heat and is converted into a liquid state from the solid state; the phase-change material in the second load-bearing column phase-change material layer (16) transfers heat to a second evaporator (14), working medium is heated and evaporated in the second evaporator (14), steam enters a second condenser (19) from a second steam pipeline (18), heat is released to an underground water pipe (32) in a second condenser coiled pipe (20) and is condensed into liquid, and the liquid returns to a second liquid compensator (11) through a second load-bearing column second liquid pipeline (17) under the action of capillary force in the second evaporator (14) and then returns to the second evaporator (14) through a second load-bearing column first liquid pipeline (13);
when a fire disaster happens to the tunnel, the phase-change material layer (26) of the third bearing column is in a solid state, and when the fire disaster happens to the tunnel, the phase-change material in the phase-change material layer (26) of the third bearing column, which covers the surface of the third bearing column (22), absorbs heat and is converted into a liquid state from the solid state; the phase-change material in the third load-bearing column phase-change material layer (26) transfers heat to the third evaporator (24), the phase-change material in the third load-bearing column phase-change material layer (26) covering the surface of the third load-bearing column (22) absorbs heat, when the heat is added to the third evaporator (24), the working medium is heated and evaporated in the third evaporator (24), the steam enters a third condenser (29) from a third steam pipeline (28), the heat is released to an underground water pipe (32) in a third condenser coil (30) and is condensed into liquid, and the liquid returns to the third liquid compensator (21) through a third load-bearing column second liquid pipeline (27) under the action of capillary force in the third evaporator (24) and then returns to the third evaporator (24) through a third load-bearing column first liquid pipeline (23);
the heat emitted from the first condenser coiled pipe (10), the second condenser coiled pipe (20) and the third condenser coiled pipe (30) is carried to an underground municipal pipe network water inlet interface (33) by the flow of water in an underground water pipe (32) connected with an underground municipal pipe network water outlet interface (31);
low-temperature water flows out of the water outlet interface (31) of the underground municipal pipe network and enters the underground water pipe (32), and the low-temperature water in the underground water pipe (32) absorbs heat transferred by the first condenser coiled pipe (10), the second condenser coiled pipe (20) and the third condenser coiled pipe (30), then the temperature is increased, and the low-temperature water flows into the water inlet interface (33) of the underground municipal pipe network.
3. The subway station bearing column heat dissipation system using the loop heat pipe as claimed in claim 1, wherein: working media in the first liquid compensator (1), the first bearing column first liquid pipeline (3), the first evaporator (4), the first bearing column second liquid pipeline (7), the first steam pipeline (8), the first condenser (9), the first condenser coiled pipe (10), the second liquid compensator (11), the second bearing column first liquid pipeline (13), the second evaporator (14), the second bearing column second liquid pipeline (17), the second steam pipeline (18), the second condenser (19), the second condenser coiled pipe (20), the third liquid compensator (21), the third bearing column first liquid pipeline (23), the third bearing column second liquid pipeline (27), the third steam pipeline (28), the third condenser (29), the third condenser coiled pipe (30) and the third evaporator (24) are pure ammonia.
4. The subway station bearing column heat dissipation system using the loop heat pipe as claimed in claim 1, wherein: the first evaporator (4), the second evaporator (14) and the third evaporator (24) contain capillary cores, and liquid can be driven to flow back.
5. The subway station bearing column heat dissipation system using the loop heat pipe as claimed in claim 1, wherein: the first condenser coiled pipe (10) is arranged in the center of the first condenser (9), the second condenser coiled pipe (20) is arranged in the center of the second condenser (19), the third condenser coiled pipe (30) is arranged in the center of the third condenser (29), and the first condenser coiled pipe (10), the second condenser coiled pipe (20) and the third condenser coiled pipe (30) are wound on an underground water pipe (32).
6. The subway station bearing column heat dissipation system using the loop heat pipe as claimed in claim 1, wherein: the underground municipal pipe network water outlet connector (31), the underground water pipe (32) and the underground municipal pipe network water inlet connector (33) are all located in underground soil right below the first bearing column (2), the second bearing column (12) and the third bearing column (22).
7. The subway station bearing column heat dissipation system using the loop heat pipe as claimed in claim 1, wherein: the first bearing column phase-change material layer (6), the second bearing column phase-change material layer (16) and the third bearing column phase-change material layer (26) are made of hydrated inorganic salt phase-change materials.
8. The subway station bearing column heat dissipation system using the loop heat pipe as claimed in claim 1, wherein: the first bearing column high-temperature-resistant material layer (5), the second bearing column high-temperature-resistant material layer (15) and the third bearing column high-temperature-resistant material layer (25) are made of carbon fiber reinforced composite materials.
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| CN201911223703.XA CN111005500A (en) | 2019-12-03 | 2019-12-03 | Subway station bearing column heat dissipation system and method applying loop heat pipes |
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| US20040000118A1 (en) * | 2002-06-27 | 2004-01-01 | Fuerle Richard D. | Fire-resistant beams |
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| CN109853774A (en) * | 2019-03-15 | 2019-06-07 | 天津商业大学 | A kind of non-transparent wall hot activation energy saving building system of integration |
| CN211369258U (en) * | 2019-12-03 | 2020-08-28 | 南京工业大学 | Subway station bearing column heat dissipation system applying loop heat pipes |
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2019
- 2019-12-03 CN CN201911223703.XA patent/CN111005500A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040000118A1 (en) * | 2002-06-27 | 2004-01-01 | Fuerle Richard D. | Fire-resistant beams |
| CN105735501A (en) * | 2016-03-19 | 2016-07-06 | 福州科理技术开发有限公司 | Heat pipe network fire-preventing and collapse-preventing device for steel-structure building |
| CN107823815A (en) * | 2017-11-30 | 2018-03-23 | 沈阳建筑大学 | Radiate refrigeration mode double-side fireproof wall |
| CN109853774A (en) * | 2019-03-15 | 2019-06-07 | 天津商业大学 | A kind of non-transparent wall hot activation energy saving building system of integration |
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