CN111979871A - Bridge deck deicing, energy storage and power generation device based on energy piles and construction method - Google Patents
Bridge deck deicing, energy storage and power generation device based on energy piles and construction method Download PDFInfo
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- CN111979871A CN111979871A CN202010704784.1A CN202010704784A CN111979871A CN 111979871 A CN111979871 A CN 111979871A CN 202010704784 A CN202010704784 A CN 202010704784A CN 111979871 A CN111979871 A CN 111979871A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/24—Methods or arrangements for preventing slipperiness or protecting against influences of the weather
- E01C11/26—Permanently installed heating or blowing devices ; Mounting thereof
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
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Abstract
The invention discloses a bridge deck deicing, energy storage and power generation device based on an energy pile and a construction method, wherein the bridge deck deicing, energy storage and power generation device comprises a bridge deck heat exchange system, an energy pile heat exchange system, a power generation device and a power storage device; the bridge deck heat exchange system, the energy pile heat exchange system and the power storage device are simultaneously connected with the power generation device; a bridge deck heat exchange system circulating pump is arranged between the bridge deck heat exchange system and the power generation device; and an energy pile heat exchange system circulating pump is arranged between the energy pile heat exchange system and the power generation device. The invention can effectively solve the problems of concentrated bridge body structure stress, difficult maintenance and replacement of the heat exchange tube and single heat exchange tube form caused by tube burying of the traditional bridge deck structure; the device can not only utilize solar energy to generate electricity, but also reasonably allocate the solar energy to store geothermal energy so as to ensure that enough power supply can be provided in winter and summer and the device can be used for deicing the bridge deck; meanwhile, the device is also beneficial to effectively reducing the temperature fluctuation of the bridge body and improving the durability of the bridge structure.
Description
Technical Field
The invention belongs to the technical field of intelligent power generation devices, and particularly relates to a bridge deck deicing, energy storage and power generation device based on energy piles and a construction method.
Background
In winter, the accumulated snow on the road surface is frozen, which often brings certain hidden troubles to safe traveling of people, however, the traditional deicing and snow melting technology often consumes a large amount of manpower and material resources and causes certain environmental pollution. The street lamp is one of the indispensable road accessory facilities of people's night trip, and long-term power consumption is big, and traditional thermal power energy secondary consumes greatly, and easily causes environmental pollution's problem.
The technology of solar street lamps is gradually improved, but the technology of solar street lamps is not widely popularized in consideration of the relatively high manufacturing cost of solar panels. In the prior art, a solar power generation device on the road surface is provided, wherein a heat exchange tube is embedded in the road surface, so that solar energy can be extracted for power generation, and the manufacturing cost of a solar street lamp is saved. However, most of the existing road surface pipe burying technologies bury the heat exchange pipe in the road surface concrete or asphalt road surface, which causes the following problems: 1) the obvious stress concentration phenomenon occurs on the road surface structure near the heat exchange tube, which is not beneficial to the mechanical property of the road surface structure; 2) the heat exchange tube has a single buried tube form; 3) the heat exchange tube is poured in the concrete, so that the heat exchange tube is not easy to overhaul and replace, and once the heat exchange tube is blocked and damaged, the whole system can be failed.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a bridge deck deicing, energy storage and power generation device based on an energy pile and a construction method thereof, and aims to solve the problems of stress concentration and difficulty in overhaul and replacement in the prior art.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a device capable of effectively utilizing shallow geothermal energy and solar energy to perform bridge deck deicing, storage and power generation comprises a bridge deck heat exchange system, an energy pile heat exchange system, a power generation device and a power storage device; the bridge deck heat exchange system, the energy pile heat exchange system and the power storage device are simultaneously connected with the power generation device; a bridge deck heat exchange system circulating pump is arranged between the bridge deck heat exchange system and the power generation device; and an energy pile heat exchange system circulating pump is arranged between the energy pile heat exchange system and the power generation device.
Further, the bridge deck heat exchange system comprises a bridge deck; the bridge deck is a hollow prefabricated slab; the hollow precast slab is provided with a plurality of hollow holes.
Furthermore, sealing materials are arranged at two ends of the hollow hole; the sealing material comprises concrete; a reserved channel is arranged between the adjacent hollow holes; the reserved channels of the adjacent hollow holes are arranged on different sides of the hollow prefabricated slab; one of the hollow holes at the outermost side is provided with an inlet, and the other is provided with an outlet.
Further, a heat exchange tube is arranged in the hollow hole; a gap between the heat exchange tube and the hollow hole is filled with a phase change material; the interior of the heat exchange tube is filled with heat exchange liquid; and the inlet and the outlet of the heat exchange tube are connected with the power generation device.
Further, the heat exchange tube is a sleeve type heat exchange tube, a U-shaped tube or a spiral tube.
Furthermore, a reserved clamping groove is formed in one end of the hollow hole; and the inlet and the outlet of the heat exchange tube extend out of the hollow precast slab from the reserved clamping groove.
Further, the energy pile heat exchange system comprises a U-shaped heat exchange pipe and a pile foundation; the U-shaped heat exchange tube is arranged in the pile foundation to form an energy pile.
Further, a water tank is arranged in the power generation device; both ends of the water tank are provided with a water outlet pipe and a water inlet pipe; the water outlet pipe and the water inlet pipe at one end of the water tank are connected with the heat exchange pipe, and the water outlet pipe and the water inlet pipe at the other end of the water tank are connected with the U-shaped heat exchange pipe; a temperature difference power generation assembly is arranged between the adjacent water tanks; the thermoelectric power generation assembly is formed by connecting a plurality of semiconductor thermoelectric power generation sheets in series; the temperature difference power generation assembly is connected with the power storage device through a lead;
a construction method of a bridge deck deicing, energy storage and power generation device based on an energy pile is characterized by comprising the following steps:
manufacturing a hollow precast slab according to the design requirement of the bridge;
installing heat exchange tubes in the hollow prefabricated slab or plugging two ends of the hollow hole to obtain a bridge deck heat exchange system;
binding the U-shaped heat exchange tube on a reinforcement cage of a pile foundation, sealing and pouring concrete to form an energy pile heat exchange system;
and connecting the bridge deck heat exchange system, the power generation device, the electric storage device and the energy pile heat exchange system to obtain the bridge deck deicing, energy storage and power generation device.
Further, the connection mode of the bridge deck heat exchange system and the power generation device is as follows: the heat exchange tube of the bridge deck heat exchange system is connected with the inlet and the outlet of the water tank of the power generation device, and a bridge deck heat exchange system circulating pump and a valve are arranged between the bridge deck heat exchange system and the power generation device;
the connection mode of the energy pile heat exchange system and the power generation device is as follows: the U-shaped heat exchange tube of the energy pile heat exchange system is connected with the inlet and the outlet of the water tank of the power generation device, and an energy pile heat exchange system circulating pump and a valve are arranged between the energy pile heat exchange system and the power generation device;
the connection mode of the power storage device and the power generation device is as follows: and the temperature difference power generation assembly of the power generation device is connected with the power storage device through a lead.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, through the arrangement of the bridge deck heat exchange system and the energy pile heat exchange system, the heat exchange tubes are arranged in the hollow holes of the hollow precast slab of the bridge deck, so that the problems of concentrated bridge structure stress, difficulty in overhauling and replacing the heat exchange tubes, single heat exchange tube form and the like caused by pipe burying of the traditional bridge deck structure can be effectively solved; the device can utilize solar energy to generate electricity, and is energy-saving and environment-friendly; the device can reasonably allocate solar energy to store geothermal heat, and can ensure enough power supply in winter and summer and be used for deicing the bridge deck; the device is beneficial to reducing the fluctuation of the temperature of the bridge body and improving the durability of the bridge structure.
Drawings
FIG. 1 is a front view of the comprehensive utilization device for bridge deck deicing, energy storage and power generation of the present invention;
FIG. 2 is a longitudinal section and a cross section of a sleeve type heat exchange tube in a bridge deck precast slab pore channel;
FIG. 3 is a three-view diagram of a bridge deck heat exchange system employing a sleeve-type heat exchange tube;
FIG. 4 is a three-view diagram of a bridge deck heat exchange system employing U-shaped tubes;
FIG. 5 is a three-view diagram of a bridge deck heat exchange system employing helical tubes;
FIG. 6 is a three-dimensional view of the interior of the bridge deck heat exchange system without heat exchange tubes;
fig. 7 is a detailed internal view of the power generation device.
Reference numerals: 1-a bridge deck heat exchange system, 2-a power generation device, 3-a power storage device, 4-a bridge deck heat exchange system circulating pump, 5-an energy pile heat exchange system circulating pump, 6-an energy pile heat exchange system, 7-a U-shaped heat exchange tube, 8-a pile foundation, 9-an outer tube, 10-an inner tube, 11-a hollow hole, 12-a heat exchange tube, 13-a phase change material, 14-a reserved clamping groove, 15-a U-shaped tube, 16-a spiral tube, 17-a reserved channel, 18-concrete, 19-a heat exchange liquid, 20-a water inlet and outlet tube, 21-a metal shell, 22-a thermoelectric power generation assembly, 23-a water tank I, 24-a water tank II, 25-a water tank III, 26-a water tank IV, 27-a valve I, 28, 29-valve three, 30-valve four, 31-valve five, 32-valve six, 33-valve seven, 34-valve eight, 35-valve nine, 36-valve ten, 37-valve eleven, 38-valve twelve, 39-valve thirteen, 40-valve fourteen, 41-valve fifteen, 42-valve sixteen.
Detailed Description
The present invention is further illustrated by the following examples, but it should not be construed that the scope of the above-described subject matter is limited to the following examples.
As shown in fig. 1-7, an apparatus for deicing, storing and generating power on a bridge deck by effectively utilizing shallow geothermal energy and solar energy comprises a bridge deck heat exchange system 1, an energy pile heat exchange system 6, a power generation apparatus 2 and a power storage apparatus 3; the bridge deck heat exchange system 1, the energy pile heat exchange system 6 and the electric power storage device 3 are simultaneously connected with the power generation device 2; a bridge deck heat exchange system circulating pump 4 is arranged between the bridge deck heat exchange system 1 and the power generation device 2; and an energy pile heat exchange system circulating pump 5 is arranged between the energy pile heat exchange system 6 and the power generation device 2.
The bridge deck heat exchange system 1 comprises a bridge deck; the bridge deck is a hollow prefabricated slab, the diameter of a hollow hole 11 of the hollow prefabricated slab is 40-120 mm, a heat exchange tube 12 is arranged in the hollow hole 11, and a reserved clamping groove 14 is formed in one end of the hollow hole 11 and used for installing the heat exchange tube 12; phase change materials 13 are filled in gaps between the heat exchange tubes 12 and the hollow prefabricated plates, the heat exchange tubes 12 are sleeve type heat exchange tubes, each sleeve type heat exchange tube comprises an outer tube 9 and an inner tube 10, and heat exchange liquid 19 is filled inside each heat exchange tube 12.
Energy stake heat transfer system 6 includes U type heat exchange tube 7 and pile foundation 8, and U type heat exchange tube 7 sets up inside pile foundation 8, forms the energy stake.
The inlet and outlet of the heat exchange pipe 12 are connected with the power generation device 2.
The heat exchange tubes 12 in the bridge deck are embedded in three ways:
(1) when the diameter of a hole of the hollow prefabricated slab is 90-120 mm, a reserved clamping groove 14 is formed in one end of the hole of the hollow prefabricated slab, a sleeve type heat exchange tube 12 is adopted and arranged in a pore channel of the prefabricated slab, and a phase change material 13 is filled in a gap between the sleeve type heat exchanger and the prefabricated slab; the sleeve type heat exchange tube is made of a PE tube, the diameter of the outer tube 9 is 70-100 mm, and the diameter of the inner tube 10 is 50-80 mm; the inlet and outlet of the heat exchange tube 12 extend out of the bridge deck from the outlet of the reserved clamping groove 14, sleeve type heat exchange tubes in holes at different positions are connected in parallel, and heat exchange liquid 19 is filled in the sleeve type heat exchange tubes.
(2) When the diameter of the hole of the hollow prefabricated slab is 60-90 mm, a reserved clamping groove 14 is formed in one end of the hole of the hollow prefabricated slab, the heat exchange tube 12 is made of U-shaped tubes 15 or spiral tubes 16 which are made of PE (polyethylene) and have the diameter of 25-32 mm, the U-shaped tubes 15 or the spiral tubes 16 are connected in series, the inlet and the outlet of the heat exchange tube 12 extend out of the bridge deck from the outlet of the reserved clamping groove 14, and phase change materials 13 are filled in gaps between the U-shaped tubes 15 and the spiral tubes 16 and the hollow prefabricated slab.
(3) When the diameter of the hole of the hollow prefabricated slab is 40-60 mm, the heat exchange tube 12 is not embedded in the hole channel of the prefabricated slab, and the hole channel is directly used as a heat exchange liquid circulation pipeline. The prefabricated slab is characterized in that reserved channels 17 are arranged between adjacent pore channels, the adjacent reserved channels 17 are arranged on different sides of the prefabricated slab, two ends of the pore channel of the hollow prefabricated slab 1 are sealed by concrete 18, inlets and outlets of heat exchange tubes are reserved below the first pore channel and the last pore channel, and water inlet and outlet pipes 20 are arranged to be connected with the power generation device 2.
The metal shell 21 of the power generation device 2 is made of stainless steel, the wall thickness is 2-5 mm, and a heat insulation layer is arranged inside the metal shell 21; 4-8 water tanks are arranged in each power generation device 2, the materials are alloy metals with good heat conductivity, and the wall thickness is 2-5 mm; both ends of the water tank are provided with a water outlet pipe and a water inlet pipe; the water outlet pipe and the water inlet pipe at one end are connected with a heat exchange pipe 12 of the bridge deck heat exchange system, the water outlet pipe and the water inlet pipe at the other end are connected with a U-shaped heat exchange pipe 7 of the energy pile, and valves are arranged on the water outlet pipe and the water inlet pipe. A temperature difference power generation assembly 22 is arranged between the adjacent water tanks; the thermoelectric generation assembly 22 is formed by connecting a plurality of semiconductor thermoelectric generation pieces in series; the thermoelectric generation assembly 22 is connected with the electric storage device 3 through a lead;
a construction method of a bridge deck deicing, energy storage and power generation device based on energy piles comprises the following steps:
(1) and (5) manufacturing the bridge deck hollow precast slab. And manufacturing the hollow precast slab in a precast plant in advance according to the design requirement of the bridge. When the diameter of the hollow hole 11 is 60-120 mm, a reserved clamping groove 14 specially used for connecting a heat exchange tube is arranged at one end of the hollow hole 11; when the diameter of the hollow hole 11 is 40-60 mm, an inlet and an outlet of the heat exchange tube are reserved below the first pore channel and the last pore channel, a reserved channel 17 is arranged between the adjacent pore channels, and the adjacent reserved channels 17 are arranged on different sides of the precast slab.
(2) A heat exchange pipe is prepared. And selecting the diameter and the embedding form of the heat exchange tube according to the size of the hole of the hollow prefabricated slab of the bridge deck, wherein the diameter of the heat exchange tube is 20-30 mm smaller than the diameter of the hole of the hollow prefabricated slab. And selecting the length of the heat exchange tube according to the longitudinal size of the hollow prefabricated slab of the bridge deck, wherein the length of the heat exchange tube is 50-100 mm smaller than the longitudinal size of the hollow prefabricated slab.
(3) And (5) processing the bridge deck heat exchange system. Embedding a prepared heat exchange tube into the hole of the hollow prefabricated slab according to a corresponding form, extending the inlet and the outlet of the heat exchange tube out of the reserved clamping groove 14 of the hollow prefabricated slab, and filling a phase change material 13 in the gap between the heat exchange tube and the hole of the hollow prefabricated slab. If the heat exchange pipe is not embedded in the pore channel of the bridge deck, the water inlet and outlet pipe 20 is extended into the reserved inlet and outlet, the waterproof and anti-seepage treatment is well performed, and the two ends of the pore channel of the hollow precast slab are sealed by using concrete 18.
(4) And (5) energy pile construction. Binding the U-shaped heat exchange tube 7 on a reinforcement cage of the energy pile 6 in advance, sealing the inlet and the outlet of the U-shaped heat exchange tube 7 higher than the elevation of the pile top, and then pouring pile body concrete to form the energy pile.
(5) The power generation device 2 is assembled. The metal case 21, the water tank, and the thermoelectric power generation module 22 of the power generation device 2 are assembled in a factory.
(6) And hoisting the bridge deck hollow precast slab. And hoisting the hollow prefabricated slab provided with the heat exchange tube in advance to a designed position.
(7) The bridge deck heat exchange system 1, the power generation device 2, the power storage device 3 and the energy pile 6 are connected. Connecting a heat exchange pipe 12 of the bridge deck heat exchange system 1 with an inlet and an outlet of a water tank of the power generation device 2, and arranging a circulating pump 4 and a valve of the bridge deck heat exchange system in the middle; connecting a U-shaped heat exchange tube of an energy pile with an inlet and an outlet of a water tank of a power generation device 2 at 7, and arranging a circulating pump 5 and a valve of an energy pile heat exchange system in the middle; the thermoelectric generation module 22 and the electrical storage device 3 are connected by a wire.
A reserved clamping groove 14 at one end of a hole of the hollow precast slab is positioned below the precast slab, and the size of the reserved clamping groove is consistent with the diameter of the hole of the precast slab; the size of a reserved channel 17 arranged between adjacent pore channels is consistent with the diameter of the hole of the prefabricated slab; the sizes of the inlets and outlets of the heat exchange tubes reserved below the first pore passage and the last pore passage are consistent with the diameter of the water inlet and outlet pipe 20.
The invention adopts a reasonable heat exchange tube embedding form, can effectively avoid the problems of concentrated bridge structure stress, difficult maintenance and replacement of the heat exchange tube, single heat exchange tube form and the like caused by the embedding of the bridge deck heat exchange tube, and provides a construction method for arranging the tubes of the bridge deck heat exchange system.
Example 1
The construction method of the bridge deck deicing, energy storage and power generation device based on the energy pile comprises the following steps:
(1) and (5) manufacturing the bridge deck hollow precast slab. And manufacturing the hollow precast slab in a precast plant in advance according to the design requirement of the bridge. The diameter of the reserved hole is 100mm, and a reserved clamping groove 14 specially used for connecting the heat exchange tube is arranged at one section of the hollow hole 11;
(2) a heat exchange pipe is prepared. And selecting a sleeve type heat exchange tube according to the size of the hole of the hollow precast slab of the bridge deck, and arranging the sleeve type heat exchange tube in the hole channel of the precast slab. The sleeve type heat exchange tube is made of a PE tube, the diameter of the outer tube 9 is 80mm, and the diameter of the inner tube 10 is 50 mm; the sleeve type heat exchange tubes in the holes at different positions are connected in parallel, and the sleeve type heat exchange tubes are filled with heat exchange liquid 19. And selecting the length of the heat exchange tube according to the longitudinal dimension of the bridge deck hollow precast slab being 10m, wherein the length of a single heat exchange tube is 100mm smaller than the longitudinal dimension of the hollow precast slab.
(3) And (5) processing the bridge deck heat exchange system. Embedding a prepared sleeve type heat exchange tube into the hole of the hollow prefabricated slab according to a corresponding form, extending the inlet and the outlet of the heat exchange tube out of the reserved clamping groove 14 of the hollow prefabricated slab, and filling a phase change material 13 in a gap between the heat exchange tube and the hole of the hollow prefabricated slab.
(4) And (5) energy pile construction. Binding the U-shaped heat exchange tube 7 on a reinforcement cage of the energy pile in advance, sealing the inlet and the outlet of the U-shaped heat exchange tube higher than the elevation of the pile top, and then pouring pile body concrete to form the energy pile.
(5) The power generation device 2 is assembled. The number of the water tanks is 4, and the metal case 21, the water tanks, and the thermoelectric power generation modules 22 of the power generation apparatus are assembled in a factory.
(6) And hoisting the bridge deck hollow precast slab. And hoisting the hollow prefabricated slab with the sleeve type heat exchange tube to a designed position.
(7) The bridge deck heat exchange system 1, the power generation device 2, the power storage device 3 and the energy pile 6 are connected. Connecting a heat exchange pipe of a bridge floor heat exchange system with an inlet and an outlet of a water tank of the power generation device, and arranging a circulating pump 4 and a valve of the bridge floor heat exchange system in the middle; connecting a U-shaped heat exchange tube of an energy pile with an inlet and an outlet of a water tank of a power generation device 7, and arranging a circulating pump 5 and a valve of an energy pile heat exchange system in the middle; the thermoelectric generation module 22 and the electrical storage device 3 are connected by a wire.
The implementation mode of utilizing the comprehensive utilization device for bridge deck deicing, energy storage and power generation based on the energy pile to carry out solar power generation, storage and deicing is as follows:
(1) in summer, the temperature of the bridge deck rises under the irradiation of sunlight, the heat exchange liquid in the heat exchange pipes in the pore channels of the bridge deck precast slabs is heated, and the heat exchange liquid 19 in the energy piles is refrigerated due to the fact that the ground temperature is lower than the atmospheric temperature.
1) At the moment, opening a first valve 27, a second valve 28, a first valve 37, a twelfth valve 38, a fifth valve 31, a sixth valve 32, a fifteenth valve 41 and a sixteenth valve 42, starting a circulating pump 4 of the bridge deck heat exchange system and a circulating pump 5 of the energy pile heat exchange system, enabling high-temperature liquid in the bridge deck to flow into a first water tank 23 and a third water tank 25 through heat exchange circulating pipelines, and enabling low-temperature liquid in the energy pile to flow into a second water tank 24 and a fourth water tank 26;
2) the temperature difference exists between the water temperatures in the adjacent water tanks, so that the temperature difference always exists between the two ends of the thermoelectric generation sheet assembly 22, and therefore electric energy can be continuously generated and stored in the electric power storage device 3;
3) after power storage device 3 has stored sufficient electric energy, can open whole valves, start bridge floor heat transfer system circulating pump 4, energy stake heat transfer system circulating pump 5, the high temperature circulation liquid in the pontic structure can directly flow into energy stake heat transfer system, and then unnecessary heat can be saved in the stratum.
(2) In winter, due to the fact that geothermal storage in summer is achieved, the ground temperature is far higher than the atmospheric temperature, the heat exchange liquid 19 inside the energy pile circulation pipeline is heated, and the heat exchange liquid 19 inside the bridge deck is refrigerated.
1) Opening a first valve 27, a second valve 28, a eleventh valve 37, a twelfth valve 38, a fifth valve 31, a sixth valve 32, a fifteenth valve 41 and a sixteenth valve 42, starting a circulating pump 4 of the bridge deck heat exchange system and a circulating pump 5 of the energy pile heat exchange system, enabling high-temperature liquid in the energy pile to flow into a second water tank 24 and a fourth water tank 26 through heat exchange circulating pipelines, and enabling low-temperature heat exchange liquid 19 in the bridge deck to flow into a first water tank 23 and a third water tank 25;
2) the temperature difference of the heat exchange liquid 19 in the water tank can ensure that the temperature difference always exists at the two ends of the temperature difference power generation sheet assembly 22 between the first water tank 23 and the second water tank 24 and between the third water tank 25 and the fourth water tank 26, power generation is carried out, and electric energy is stored in the power storage device 3;
3) when snowing weather appears, all valves can be opened, the bridge deck heat exchange system circulating pump 4 and the energy pile heat exchange system circulating pump 5 are started, and high-temperature circulating liquid in the energy pile can directly flow into the bridge deck heat exchange system, so that the bridge structure is heated, and the active deicing and snow melting effect is achieved.
Example 2
The construction method of the bridge deck deicing, energy storage and power generation device based on the energy pile comprises the following steps:
(1) and (5) manufacturing the bridge deck hollow precast slab. And manufacturing the hollow precast slab in a precast plant in advance according to the design requirement of the bridge. The diameter of each reserved hole is 40mm, reserved channels 17 are arranged between every two adjacent holes, the adjacent reserved channels are arranged on different sides of the prefabricated slab, and the diameter of each reserved channel is about 40 mm.
(2) A heat exchange pipe is prepared. According to the size of the holes of the hollow precast slab of the bridge floor, the heat exchange tubes are not buried, and the hole channels are directly used as heat exchange liquid circulation pipelines.
(3) And (5) processing the bridge deck heat exchange system. Two ends of a pore passage of the hollow precast slab are sealed by concrete 18, an inlet and an outlet of a heat exchange tube are reserved below the first pore passage and the last pore passage, a water inlet pipe and a water outlet pipe 20 are arranged to be connected with the power generation device 2, the diameter of the reserved inlet and outlet is identical to the diameter of a water inlet and outlet pipe and is 32mm, and waterproof and anti-seepage measures are taken at the inlet and outlet.
(4) And (5) energy pile construction. Binding the U-shaped heat exchange tube 7 on a reinforcement cage of the energy pile in advance, sealing the inlet and the outlet of the U-shaped heat exchange tube higher than the elevation of the pile top, and then pouring pile body concrete to form the energy pile.
(5) The power generation device 2 is assembled. The number of the water tanks is 4, and the metal case 21, the water tanks, and the thermoelectric power generation modules 22 of the power generation device 2 are assembled in a factory.
(6) And hoisting the bridge deck hollow precast slab. And hoisting the hollow prefabricated slab provided with the heat exchange tube in advance to a designed position.
(7) The bridge deck heat exchange system, the power generation device 2, the electric storage device 3 and the energy pile 6 are connected. Connecting a heat exchange pipe of a bridge floor heat exchange system with an inlet and an outlet of a water tank of the power generation device 2, and arranging a circulating pump 4 and a valve of the bridge floor heat exchange system in the middle; connecting a U-shaped heat exchange tube of an energy pile with an inlet and an outlet of a water tank of a power generation device 2 at 7, and arranging a circulating pump 5 and a valve of an energy pile heat exchange system in the middle; the thermoelectric generation module 22 and the electrical storage device 3 are connected by a wire.
The implementation mode of utilizing the comprehensive utilization device for bridge deck deicing, energy storage and power generation based on the energy pile to carry out solar power generation, storage and deicing is as follows:
(1) in summer, the temperature of the bridge deck rises under the irradiation of sunlight, the heat exchange liquid in the heat exchange pipes in the pore channels of the bridge deck precast slabs is heated, and the heat exchange liquid 19 in the energy piles is refrigerated due to the fact that the ground temperature is lower than the atmospheric temperature.
1) At the moment, opening a first valve 27, a second valve 28, a first valve 37, a twelfth valve 38, a fifth valve 31, a sixth valve 32, a fifteenth valve 41 and a sixteenth valve 42, starting a circulating pump 4 of the bridge deck heat exchange system and a circulating pump 5 of the energy pile heat exchange system, enabling high-temperature liquid in the bridge deck to flow into a first water tank 23 and a third water tank 25 through heat exchange circulating pipelines, and enabling low-temperature liquid in the energy pile to flow into a second water tank 24 and a fourth water tank 26;
2) the temperature difference exists between the water temperatures in the adjacent water tanks, so that the temperature difference always exists between the two ends of the thermoelectric generation sheet assembly 22, and therefore electric energy can be continuously generated and stored in the electric power storage device 3;
3) after power storage device 3 has stored sufficient electric energy, can open whole valves, start bridge floor heat transfer system circulating pump 4, energy stake heat transfer system circulating pump 5, the high temperature circulation liquid in the pontic structure can directly flow into energy stake heat transfer system, and then unnecessary heat can be saved in the stratum.
(2) In winter, due to the fact that geothermal storage in summer is achieved, the ground temperature is far higher than the atmospheric temperature, the heat exchange liquid 19 inside the energy pile circulation pipeline is heated, and the heat exchange liquid 19 inside the bridge deck is refrigerated.
1) Opening a first valve 27, a second valve 28, a eleventh valve 37, a twelfth valve 38, a fifth valve 31, a sixth valve 32, a fifteenth valve 41 and a sixteenth valve 42, starting a circulating pump 4 of the bridge deck heat exchange system and a circulating pump 5 of the energy pile heat exchange system, enabling high-temperature liquid in the energy pile to flow into a second water tank 24 and a fourth water tank 26 through heat exchange circulating pipelines, and enabling low-temperature heat exchange liquid 19 in the bridge deck to flow into a first water tank 23 and a third water tank 25;
2) the temperature difference of the heat exchange liquid 19 in the water tank can ensure that the temperature difference always exists at the two ends of the temperature difference power generation sheet assembly 22 between the first water tank 23 and the second water tank 24 and between the third water tank 25 and the fourth water tank 26, power generation is carried out, and electric energy is stored in the power storage device 3;
3) when snowing weather appears, all valves can be opened, the bridge deck heat exchange system circulating pump 4 and the energy pile heat exchange system circulating pump 5 are started, and high-temperature circulating liquid in the energy pile can directly flow into the bridge deck heat exchange system, so that the bridge structure is heated, and the active deicing and snow melting effect is achieved.
The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.
Claims (10)
1. A device capable of effectively utilizing shallow geothermal energy and solar energy to perform bridge deck deicing, storage and power generation is characterized by comprising a bridge deck heat exchange system, an energy pile heat exchange system, a power generation device and a power storage device; the bridge deck heat exchange system, the energy pile heat exchange system and the power storage device are simultaneously connected with the power generation device; a bridge deck heat exchange system circulating pump is arranged between the bridge deck heat exchange system and the power generation device; and an energy pile heat exchange system circulating pump is arranged between the energy pile heat exchange system and the power generation device.
2. The apparatus for deicing, storing and generating power of bridge deck capable of effectively utilizing shallow geothermal energy and solar energy according to claim 1, wherein said bridge deck heat exchange system comprises a bridge deck; the bridge deck is a hollow prefabricated slab; the hollow precast slab is provided with a plurality of hollow holes.
3. The device for bridge deck deicing, storage and power generation capable of effectively utilizing shallow geothermal energy and solar energy according to claim 2, wherein sealing materials are arranged at two ends of the hollow hole; the sealing material comprises concrete; a reserved channel is arranged between the adjacent hollow holes; the reserved channels of the adjacent hollow holes are arranged on different sides of the hollow prefabricated slab; one of the hollow holes at the outermost side is provided with an inlet, and the other is provided with an outlet.
4. The device for deicing, storing and generating bridge deck by effectively utilizing shallow geothermal energy and solar energy as claimed in claim 2, wherein heat exchange tubes are arranged in said hollow holes; a gap between the heat exchange tube and the hollow hole is filled with a phase change material; the interior of the heat exchange tube is filled with heat exchange liquid; and the inlet and the outlet of the heat exchange tube are connected with the power generation device.
5. The device for deicing the bridge floor, storing and generating power of the shallow geothermal energy and solar energy effectively according to claim 4, wherein the heat exchange tube is a sleeve type heat exchange tube, a U-shaped tube or a spiral tube.
6. The device for deicing, storing and generating bridge deck by effectively utilizing shallow geothermal energy and solar energy according to claim 5, wherein one end of the hollow hole is provided with a reserved clamping groove; and the inlet and the outlet of the heat exchange tube extend out of the hollow precast slab from the reserved clamping groove.
7. The device for bridge deck deicing, storage and power generation by effectively utilizing shallow geothermal energy and solar energy according to claim 4, wherein the energy pile heat exchange system comprises U-shaped heat exchange pipes and pile foundations; the U-shaped heat exchange tube is arranged in the pile foundation to form an energy pile.
8. The device for deicing the bridge floor, storing and generating power by effectively utilizing shallow geothermal energy and solar energy as claimed in claim 7, wherein a water tank is arranged in the power generation device; both ends of the water tank are provided with a water outlet pipe and a water inlet pipe; the water outlet pipe and the water inlet pipe at one end of the water tank are connected with the heat exchange pipe, and the water outlet pipe and the water inlet pipe at the other end of the water tank are connected with the U-shaped heat exchange pipe; a temperature difference power generation assembly is arranged between the adjacent water tanks; the thermoelectric power generation assembly is formed by connecting a plurality of semiconductor thermoelectric power generation sheets in series; the temperature difference power generation assembly is connected with the power storage device through a lead.
9. A construction method of a bridge deck deicing, energy storage and power generation device based on an energy pile is characterized by comprising the following steps:
manufacturing a hollow precast slab according to the design requirement of the bridge;
installing heat exchange tubes in the hollow prefabricated slab or plugging two ends of the hollow hole to obtain a bridge deck heat exchange system;
binding the U-shaped heat exchange tube on a reinforcement cage of a pile foundation, sealing and pouring concrete to form an energy pile heat exchange system;
and connecting the bridge deck heat exchange system, the power generation device, the electric storage device and the energy pile heat exchange system to obtain the bridge deck deicing, energy storage and power generation device.
10. The construction method for the bridge deck deicing, energy storage and power generation device based on the energy piles as claimed in claim 9, wherein the connection mode of the bridge deck heat exchange system and the power generation device is as follows: the heat exchange tube of the bridge deck heat exchange system is connected with the inlet and the outlet of the water tank of the power generation device, and a bridge deck heat exchange system circulating pump and a valve are arranged between the bridge deck heat exchange system and the power generation device;
the connection mode of the energy pile heat exchange system and the power generation device is as follows: the U-shaped heat exchange tube of the energy pile heat exchange system is connected with the inlet and the outlet of the water tank of the power generation device, and an energy pile heat exchange system circulating pump and a valve are arranged between the energy pile heat exchange system and the power generation device;
the connection mode of the power storage device and the power generation device is as follows: and the temperature difference power generation assembly of the power generation device is connected with the power storage device through a lead.
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| CN202010704784.1A CN111979871A (en) | 2020-07-21 | 2020-07-21 | Bridge deck deicing, energy storage and power generation device based on energy piles and construction method |
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| CN202010704784.1A CN111979871A (en) | 2020-07-21 | 2020-07-21 | Bridge deck deicing, energy storage and power generation device based on energy piles and construction method |
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