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WO2018014609A1 - Système de pieu renforcé par un pieu sol-ciment à injection par jet pour la génération combinée de refroidissement, de chaleur et d'énergie et son procédé de construction - Google Patents

Système de pieu renforcé par un pieu sol-ciment à injection par jet pour la génération combinée de refroidissement, de chaleur et d'énergie et son procédé de construction Download PDF

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Publication number
WO2018014609A1
WO2018014609A1 PCT/CN2017/080632 CN2017080632W WO2018014609A1 WO 2018014609 A1 WO2018014609 A1 WO 2018014609A1 CN 2017080632 W CN2017080632 W CN 2017080632W WO 2018014609 A1 WO2018014609 A1 WO 2018014609A1
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WIPO (PCT)
Prior art keywords
pile
power generation
heat
heat transfer
transfer tube
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Ceased
Application number
PCT/CN2017/080632
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English (en)
Chinese (zh)
Inventor
孔纲强
孟珍珠
彭怀风
李春红
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Hohai University HHU
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Hohai University HHU
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Publication date
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Publication of WO2018014609A1 publication Critical patent/WO2018014609A1/fr
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/50—Piles comprising both precast concrete portions and concrete portions cast in situ
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T10/00—Geothermal collectors
    • F24T10/10—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
    • F24T10/13—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes
    • F24T10/15—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes using bent tubes; using tubes assembled with connectors or with return headers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
    • H02N11/002—Generators
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
    • F24F2005/0057—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground receiving heat-exchange fluid from a closed circuit in the ground
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/40—Geothermal heat-pumps
    • 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/10—Geothermal energy
    • 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
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/14—Combined heat and power generation [CHP]

Definitions

  • the invention relates to a shallow geothermal energy utilization technology, and is mainly applicable to the technical field of building pile foundation, etc., in particular to a cold and hot cogeneration high pressure rotary jet ferrule composite pile system and a construction method thereof.
  • Shallow geothermal energy also known as shallow geothermal energy
  • shallow geothermal energy is a low-grade renewable and clean energy source. It is one of the most internal thermal energy resources in the world under the current technical and economic conditions.
  • the development and utilization of shallow geothermal energy is mainly to directly use the characteristics of shallow soil constant temperature throughout the year, and use heat pump circulation to achieve the effect of heating or summer cooling of ground buildings.
  • Ground-source heat pump technology is one of the most common forms of direct use of shallow geothermal energy. This technology utilizes the relatively stable temperature characteristics of underground soil, surface water, and groundwater, and can be regenerated by heat exchange with the earth as an energy storage body.
  • Energy air conditioning system this technical solution can replace traditional heating methods and air conditioning systems such as traditional boilers or municipal pipe networks to achieve energy saving and emission reduction.
  • the underground buried heat transfer tube is the construction difficulty and investment focus of the ground source heat pump technology; and the underground heat transfer tube needs to occupy a large land area and underground space, resulting in high construction cost such as initial burial, which affects its large-scale application. .
  • Combining the underground heat transfer pipe burying facility in the ground source heat pump technology with the traditional building pile foundation construction can effectively solve the construction steps of the special buried pipe and the underground space occupied by the underground heat transfer pipe, thereby greatly saving the project cost;
  • the pile foundation structure with underground heat transfer tubes formed in the form of underground buried pipes is called energy piles (or energy piles, energy heat exchange piles).
  • Energy pile technology is one of the most typical technical solutions for effectively utilizing shallow geothermal energy in recent years. Combined with the specific form of pile foundation structure, different types of energy piles for shallow geothermal energy heat transfer are produced (Refs. 1-16). .
  • German invention patent "Energy pile for geothermal energy purpose iecombined heating and cooling systems, has collector tube including section that includes another section that transitions and runs circularly around the former section of collector tube" (DE102012013337) A1)".
  • Document 14 Liu Hanlong, Ding Xuanming, Kong Gangqiang, Wu Hongwei and Chen Yumin applied for and granted the Chinese invention patent “a PCC energy pile and its manufacturing method, (patent number: CN201210298385.5), authorized announcement date November 19, 2014”.
  • Document 15 Li Ping, Ding Xuanming, Gao Hongmei and Zheng Changjie applied for and granted the Chinese invention patent “a geothermal energy collection pile foundation and construction method, (patent number: CN201210476105.5), authorization announcement date April 8, 2015” .
  • Document 16 International method PCT patents "A method and system for installing geothermal heat exchangers, energy piles, concrete piles, and piles using a sonic drill and a removable or retrievable drill bit" (PCT/) applied by Raymond J. Roussy. CA2009/000180)", the corresponding national phase patent grant numbers are: CA2716209A1, CA2716209C, CA2827026A1, CA2827026C, CN102016218A, EP2247816A1, EP2247816A4, US8118115, US20090214299.
  • the energy pile technology of different production methods or construction methods can be obtained; however, no matter which form of energy pile technology is used, the shallow geothermal energy is based on the direct heat transfer principle. Direct use, no conversion in the form of energy.
  • Geothermal energy can not only directly utilize its thermal energy through heat pump technology, but also can be used for power generation.
  • the traditional geothermal power generation principle is similar to that of thermal power generation.
  • the medium-high temperature (>80°C) layer of underground hot water and steam is used as the power source.
  • the underground thermal energy is converted into mechanical energy, and then the mechanical energy is converted into electrical energy.
  • documents 17 to 18 a facility and method for generating deep geothermal energy based on hot water wells is disclosed; in documents 19-22, a deep borehole, underground mine, and oil production layer are disclosed, respectively.
  • Casing or underground rock tunnel structure a method of converting deep geothermal energy into electric energy; this power generation method has the following disadvantages: (1) The heat source temperature is generally required to be greater than >80 ° C. In other words, these technical methods are for shallow geothermal energy. (Generally ⁇ 25°C) is not applicable; (2) The number of energy morphological conversions is relatively high, resulting in a decrease in energy utilization rate; (3) The development of underground deep heat source is relatively difficult, the development cost is high, and the development cost is almost non-progressive with the mining depth. Linear growth.
  • Document 21 Chinese invention patents applied and authorized by Gong Zhiyong “Methods and devices for transferring underground thermal energy using oil casings (Patent No.: CN201010101312.3)”.
  • thermoelectric conversion between subtle temperature differences can be achieved based on semiconductor low temperature thermoelectric power generation technology (Documentation) 22)
  • Documentation a technical method for generating electricity by using a temperature difference between an ultra-deep high temperature (1200 to 1800 o C) and a deep intermediate temperature (250 to 600 o C) is disclosed in the literature 23;
  • Semiconductor temperature difference power generation can be used not only in the case of large relative temperature difference, but also in the case of relatively small temperature difference.
  • the semiconductor temperature difference power generation chip technology effectively breaks the limitation of relative temperature difference on power generation, and greatly expands the conversion of thermal energy into The types and channels of electrical energy also make it possible to convert shallow geothermal energy directly into electrical energy.
  • a technical method for providing a heat source by using solar energy and providing a cold source for providing differential temperature power generation by using shallow geothermal energy is disclosed; these technical methods play a good demonstration role for utilizing shallow geothermal energy for temperature difference power generation.
  • the shallow geothermal energy in the literature 26-27 is obtained by transferring the shallow geothermal energy through the heat transfer tube to the liquid in the heat transfer tube, and bringing the heat energy to the surface through the flow of the liquid in the heat transfer tube. Then use the temperature difference between the liquid in the heat transfer tube and the surface medium (solar or air) temperature to generate electricity; this method has the following shortcomings: (1) need to pre-drill in the formation, embed the heat transfer tube, there is occupation The land area and underground space are large, and the cost of initial buried facilities is high. (2) The shallow geothermal energy is first transferred to the liquid in the heat transfer tube, and then the liquid in the heat transfer tube and other objects at different temperatures on the surface are used for temperature difference power generation. Increased number of passes will also result in reduced energy utilization; (3) Shallow geothermal energy does not directly convert energy through the soil.
  • a shallow geothermal energy and heat transfer tube can be developed simultaneously.
  • the technical solution between the temperature difference between the power generation, the heat energy transmitted through the heat transfer tube to supply the upper air-conditioning heating or the cold energy supply to the upper air-conditioning refrigeration cogeneration pile is particularly It is important.
  • the drilling tunnel has high construction cost, occupied land area or large underground space, and does not utilize the temperature difference between the soil itself and the medium for direct power generation; Cogeneration high-pressure rotary jet ferrule composite pile system and construction method thereof, when the building is constructed, the thermoelectric power generation device and the ground source heat pump device are directly buried in the pile foundation of the building to make it and the building structure Combine.
  • the heat transfer tube on the side wall of the core pile is connected with the water pump I and the heat exchange equipment to form a shallow geothermal energy air conditioning system; the heat transfer tube of the side wall of the core pile, the semiconductor thermoelectric power generation device I, the semiconductor thermoelectric power generation device II, and the wire, DC The /DC converter, battery and water pump II are connected to form a shallow geothermal energy temperature difference power generation system; finally, the application of the combined heat and power cogeneration high pressure rotary jet ferrule composite pile system is realized.
  • the present invention provides a combined heat and power generation high-pressure rotary jet ferrule composite pile system, which comprises: a high-pressure rotary jet ferrule composite pile, a heat transfer tube, an air conditioning system, and a thermoelectric power generation system; among them,
  • the air conditioning system comprises a heat exchange device, the heat exchange device is arranged above the heat transfer tube, and the liquid flow rate in the heat transfer tube is controlled by the water pump I and the valve, and the heat transfer tube is first exchanged with the soil body, and then the upper heat exchange is connected.
  • the thermoelectric power generation system includes a semiconductor thermoelectric power generation device I and a semiconductor thermoelectric power generation device II, wherein the semiconductor thermoelectric power generation device I realizes thermoelectric conversion using a temperature difference between a heat transfer tube and a pile-side soil body, and obtains the obtained The electric power is supplied to the electric power of the upper electric equipment; the semiconductor thermoelectric power generation device II realizes energy conversion by using the temperature difference between the heat transfer tube and the heat dissipating tube, and supplies the obtained electric power to the electric power of the upper electric equipment.
  • the semiconductor thermoelectric power generation device 1 includes a semiconductor thermoelectric power generation sheet, a thermal conductive silica gel, and a thermal conductive protective layer.
  • the semiconductor thermoelectric power generation sheet is bonded to the outside of the heat transfer tube by using a thermal conductive silica gel, and a thermal conductive protective layer is disposed outside the semiconductor thermoelectric power generation sheet, and the semiconductor temperature difference power generation is performed.
  • the sheet uses the temperature difference between the heat transfer tube and the soil on the pile side to realize thermoelectric conversion, and uses the wire to sequentially connect the power obtained by the semiconductor temperature difference power generation to the power supply of the DC/DC converter and the battery for the upper electric equipment.
  • the semiconductor thermoelectric power generation device II includes a heat dissipation tube, a semiconductor thermoelectric power generation sheet, a thermal conductive silicone, and a heat conductive bottom plate.
  • the heat dissipation tube is evenly arranged on the heat conduction substrate, and the heat dissipation tube is wound around the heat transfer tube to which the semiconductor temperature difference power generation sheet is attached.
  • the wires connecting the semiconductor thermoelectric power generation chips are buried in the thermal conductive silica gel, and the heat transfer tubes along the sidewalls of the core pile are led out to the ground, and sequentially connected with the DC/DC converter, the battery and the electric equipment; the DC/DC converter, The outside of the battery and the electrical equipment is protected by a protective cover.
  • the heat pipe is separately connected to the water pump II for liquid circulation in the heat pipe; the semiconductor temperature difference power generation piece realizes energy conversion through the temperature difference between the heat transfer tube and the heat pipe, and the obtained power is sequentially used by the wire.
  • Connect the DC/DC converter and the battery to the power supply of the upper electrical equipment.
  • the above semiconductor thermoelectric power generation chip has a semiconductor thermoelectric power generation chip commonly used in the prior art, and includes a hot end, a cold end, a P-type semiconductor, an N-type semiconductor, a metal piece and a heat conducting plate.
  • the high-pressure rotary jet ferrule composite pile is composed of a high-pressure jet grouting pile and a core pile; wherein the high-pressure jet grouting pile has a pile diameter of 600-1000 mm and a pile length of 20-40 m.
  • the grouting slurry is a cement slurry, and the cement is not less than 42.5 grades, and one or more of fine sand, fly ash, early strength agent, quick-setting agent or water glass may be added to the cement slurry;
  • the pile length of the core pile is 20-40 m, which can be an I-shaped steel core pile, or a prestressed core pile, or a steel core pile.
  • the cross-section height of the I-shaped steel core pile is 200-400 mm and the width is 200 ⁇ .
  • the length of the core pile may be greater than, less than or equal to the length of the high pressure jet grouting pile, and the section of the high pressure jet grouting pile may be the length, upper, middle or lower part of the core pile.
  • the heat transfer tube is a polyethylene tube (also referred to as a PE tube), and the outer diameter, the wall thickness and the length thereof are determined according to the core pile length and the heat transfer tube buried tube arrangement.
  • the outer diameter is 25 to 50 mm, the wall thickness is 5 to 8 mm, and the length is 40 to 150 m; the heat transfer tube is fixedly embedded in the side wall of the core pile; the heat transfer tube is buried in the form of a single U shape, a double U shape or W Any one or several combinations of forms.
  • the water pump I is located at the surface of the earth and has a power of 0.55 to 1.2 kW; the valve is an electric two-way valve; and the heat exchange device is a fan coil in the air conditioning device.
  • the thermal conductivity of the thermal conductive silica gel is 0.6 to 1.5 W/(m ⁇ K), and has high bonding performance and superior thermal conductivity, and is not solidified or electrically conductive.
  • the thermal conductive protective layer is a stainless steel iron or silica-based composite material to prevent damage of the semiconductor thermoelectric power generation piece during construction;
  • the DC/DC converter is located at the surface of the surface, and is a step-up DC/DC converter; Located on the surface, it is a lead storage battery or a lithium ion battery or a lithium ion polymer battery or a nickel cadmium battery; the wire is embedded in the thermal silica gel.
  • the heat dissipation pipe is a polyethylene pipe or a metal pipe, and has an outer diameter of 10 to 20 mm, a wall thickness of 3 to 4 mm, and a length of 5 to 15 m; and the power of the water pump II is 5 ⁇ 15w;
  • the DC/DC converter is a step-up DC/DC converter;
  • the battery is one of a lead battery or a lithium ion battery or a lithium ion polymer battery or a nickel cadmium battery; the semiconductor temperature difference
  • the DC/DC converter and the battery in the power generating device II are disposed on the inner side wall or the outer side wall of the core pile, and are protected from water and collision by the underground heat-dissipating device protective cover.
  • the invention further provides a construction method for a combined heat and power cogeneration high-pressure rotary jet ferrule composite pile system, comprising the following steps:
  • (1) Semiconductor temperature difference power generation device I According to the design requirements, the heat transfer tube is selected, and the semiconductor thermoelectric power generation piece is pasted on the outer side of the heat transfer tube at the design position by using the thermal conductive silica gel, and the wire connecting the semiconductor thermoelectric power generation piece is embedded in the thermal conductive silica gel, and is taken out.
  • the ground is sequentially connected with the DC/DC converter, the battery and the electric equipment; the heat transfer tube containing the semiconductor thermoelectric power generation piece is fixed on the side wall of the core pile;
  • the heat transfer tube is connected with the water pump I and the heat exchange equipment to form a shallow geothermal energy air conditioning system to provide cooling or heating for the upper building; the wire is sequentially connected with the DC/DC converter, The battery and the electrical equipment are connected to form a shallow geothermal energy temperature difference power generation system to provide power for the upper building (such as lighting LED light power, water pump II power consumption); according to the total amount of shallow geothermal energy reserves and the upper building power supply, For cooling or heating demand, you can choose only air conditioning system (cooling or heating), thermoelectric power generation system only (power supply), or air conditioning system and thermoelectric power generation system at the same time; finally realize the cogeneration high-pressure rotary jet ferrule composite pile Construction and application of the system.
  • the semiconductor thermoelectric power generation chip is buried outside the heat transfer tube of 10 to 15 m or less; the buried tube is in the form of any one or a combination of a single U shape, a double U shape or a W form.
  • the combined heat and cold power production high-pressure rotary jet ferrule composite pile of the present invention has the following technical advantages:
  • the existing geothermal temperature difference power generation system needs to be restricted by special construction sites (such as high temperature tunnels and oil fields), and can hardly be promoted in urban centers and residential areas.
  • the present invention adopts the form of built pile foundation pipes without the need for Drilling and drilling alone increases the geographical approximation of geothermal power generation, and can use geothermal energy to generate electricity even in areas with high building volume ratios;
  • the semiconductor thermoelectric power generation device I in the combined high-pressure rotary jet ferrule combined pile of cold, heat and power can use the temperature difference between the heat pipe and the soil to perform semiconductor temperature difference power generation, except that it is converted into a usable by a DC/DC converter.
  • the electric energy is supplied to the upper part of the building, and the heat in the heat transfer tube is consumed by the thermoelectric conversion in the process of the thermoelectric power generation, and the heat of the liquid in the heat transfer tube is consumed by the heat exchange between the soil and the heat exchange tube in the conventional energy pile.
  • the semiconductor thermoelectric power generation device II in the combined high-pressure rotary-jet ferrule composite pile of cold, heat and power can use the temperature difference between the heat-dissipating tube and the liquid in the heat-exchange tube to perform semiconductor temperature difference power generation, after being converted by the DC/DC converter
  • the liquid circulating water pump II in the heat pipe supplies power, and the heat of the heat transfer liquid in the heat exchange tube is consumed by the thermoelectric conversion.
  • the laying of the heat pipe indirectly increases the heat exchange area of the heat transfer pipe in the ground, which not only improves the geothermal utilization rate in the unit space, but also Increased the efficiency of geothermal air conditioning systems;
  • Shallow geothermal energy can be selected according to the needs of the upper building environment, only the air conditioning system (cooling or heating), only the thermoelectric system (power supply), or both the air conditioning system and the thermoelectric system, thus breaking the shallow geothermal energy.
  • the pile foundation field can only be applied to the limitation of indoor air conditioning heating, realizing the on-demand switching of shallow geothermal energy application mode, realizing the on-demand and timely use of energy, and improving energy utilization efficiency.
  • FIG. 1 is a schematic view showing the arrangement structure of a combined high-pressure rotary-jet ferrule composite pile system for cold, heat and power generation according to the present invention
  • FIG. 2 is a perspective view and a cross-sectional view showing a buried U-shaped heat transfer tube of an I-shaped steel core pile according to the present invention
  • FIG. 3 is a perspective view and a cross-sectional view showing a buried U-shaped heat transfer tube of a prestressed tubular pile in the present invention
  • FIG. 4 is a perspective view and a cross-sectional view showing the embedding form of a double U-shaped heat transfer tube of a prestressed tubular pile in the present invention
  • Figure 5 is a perspective view and a cross-sectional view showing the embedding form of a W-shaped heat transfer tube of a prestressed tubular pile in the present invention
  • Figure 6 is a perspective view and a cross-sectional view showing the embedded form of a single U-shaped heat transfer tube of a steel pipe core pile according to the present invention
  • Figure 7 is a perspective view and a cross-sectional view showing the embedding form of a double U-shaped heat transfer tube of a steel pipe core pile according to the present invention.
  • Figure 8 is a perspective view and a cross-sectional view showing the embedding form of a W-shaped heat transfer tube of a steel pipe core pile according to the present invention
  • Figure 9 is a cross-sectional view showing the arrangement of the semiconductor thermoelectric power generation apparatus 1 of the present invention.
  • Figure 10 is a cross-sectional view of a semiconductor thermoelectric power generation device I of the present invention.
  • Figure 11 is a cross-sectional view showing the arrangement of the semiconductor thermoelectric power generation device II of the present invention.
  • Figure 12 is a cross-sectional view of the semiconductor thermoelectric power generation device II of the present invention.
  • Figure 13 is a perspective view of a semiconductor thermoelectric power generation chip of the present invention.
  • Figure 14 is a cross-sectional view of a semiconductor thermoelectric power generation chip of the present invention.
  • 1 is the core pile
  • 2 is the heat transfer tube
  • 3 is the high pressure jet grouting pile
  • 4 is the DC/DC converter
  • 5 is the battery
  • 6 is the wire
  • 7 is the water pump I
  • 8 is the water pump II
  • 11 is I-shaped steel core pile
  • 12 is prestressed core pile
  • 13 is steel core pile
  • 14 is electrical equipment
  • 15 is semiconductor thermoelectric power generation device I
  • 16 is P-type semiconductor
  • 17 It is an N-type semiconductor
  • 18 is a metal piece
  • 19 is a heat conducting plate
  • 20 is a hot end
  • 21 is a cold end
  • 22 is a thermal conductive protective layer
  • 23 is a thermal conductive silica gel
  • 24 is a semiconductor thermoelectric power generation sheet
  • 25 is a semiconductor thermoelectric power generation device II 26 is a heat pipe
  • 27 is a heat conductive bottom plate
  • 28 is a protective cover.
  • the invention provides a combination of cold and heat electricity production high pressure rotary jet ferrule.
  • the air conditioning system includes a heat exchange device, and the heat exchange device is disposed above the heat transfer tube.
  • the liquid flow rate in the heat transfer tube is controlled by the water pump I and the valve, and the heat transfer tube is first heat exchanged with the soil body, and then the upper heat exchange device is connected thereto. Adjust the indoor temperature inside the building.
  • the thermoelectric power generation system includes a semiconductor thermoelectric power generation device I and a semiconductor thermoelectric power generation device II.
  • the semiconductor thermoelectric power generation device 1 includes a semiconductor thermoelectric power generation chip, a thermal conductive silica gel, and a thermal conductive protective layer.
  • the semiconductor thermoelectric power generation sheet is bonded to the outside of the heat transfer tube by using a thermal conductive silicone.
  • a heat conduction protection layer is disposed outside the semiconductor temperature difference power generation piece, and the semiconductor temperature difference power generation piece realizes thermoelectric conversion by using a temperature difference between the heat transfer tube and the pile side soil body, and the power obtained by the semiconductor temperature difference power generation is sequentially connected to the DC/DC converter by using a wire.
  • the battery is used for the power supply of the upper electrical equipment.
  • the semiconductor thermoelectric power generation device II comprises a heat dissipation tube, a semiconductor thermoelectric power generation sheet, a thermal conductive silica gel and a heat conductive bottom plate.
  • the heat dissipation tube is evenly arranged on the heat conduction substrate, and the heat dissipation tube is wound around the heat transfer tube to which the semiconductor thermoelectric power generation sheet is attached, and the semiconductor temperature difference power generation is connected.
  • the wire of the piece is embedded in the thermal silica gel, and the heat transfer tube along the side wall of the core pile is led out of the ground, and is sequentially connected with the DC/DC converter, the battery and the electric equipment; the heat pipe is separately connected to the water pump II for circulating the liquid in the heat pipe;
  • the semiconductor thermoelectric power generation piece realizes energy conversion through the temperature difference between the heat transfer tube and the heat dissipation tube, and the obtained electric power is sequentially connected to the power supply of the DC/DC converter and the battery for the upper electric equipment by using the electric wire.
  • high-pressure rotary jet ferrule composite pile which is composed of high-pressure jet grouting pile 3 and core pile 1;
  • the high-pressure jet-jet pile 3 has a pile diameter of 600-1000mm (800mm in this embodiment), the pile length is 20-40m (30m in this embodiment), the grouting slurry is cement slurry, the cement label is not less than 42.5 grade, and the fine sand and fly ash can be added to the cement slurry.
  • One or more of early strength agent, quick-setting agent or water glass this embodiment is a 42.5 grade cement slurry).
  • the pile length of the core pile 1 is 20 to 40 m (30 m in this embodiment), and It is an I-shaped steel core pile 11 (shown in Figure 2), or a prestressed core pile 12 (shown in Figures 3 to 5), or a steel core pile 13 (shown in Figures 6-8).
  • the cross-section height of the shape steel core pile 11 is 200-400 mm, the width is 200-400 mm, the web thickness is 8-12 mm, and the outer diameter of the prestressed core pile 12 is 600-800 mm, the wall thickness is 150-300 mm, and the steel core pile 13 is outside.
  • the diameter is 500-800mm
  • the wall thickness is 8-12mm (the prestressed core pile 12 in this embodiment, the outer diameter is 600mm, the wall thickness is 150mm);
  • the length of the core pile 1 can be greater than, less than or equal to the high pressure jet grouting pile 3
  • the section of the high-pressure jet grouting pile 3 reinforcement may be the length, the upper part, the middle part or the lower part of the core pile 1 (the length of the embodiment is long).
  • the heat transfer tube 2 buried tube form; preferably the heat transfer tube 2 is a polyethylene tube (also known as PE pipe), its outer diameter is 25 ⁇ 50mm, the wall thickness is 5 ⁇ 8mm, the length is 40 ⁇ 150m (in this embodiment, the outer diameter is 30mm, the wall thickness is 5mm, the length is 100m), according to the core pile 1
  • PE pipe polyethylene tube
  • the outer diameter is 25 ⁇ 50mm
  • the wall thickness is 5 ⁇ 8mm
  • the length is 40 ⁇ 150m (in this embodiment, the outer diameter is 30mm, the wall thickness is 5mm, the length is 100m)
  • the heat transfer tube 2 is fixedly embedded in the side wall of the core pile 1
  • the heat transfer tube 2 can be in the form of a single U-shaped, double U-shaped or W-shaped one. Or several combinations (this embodiment is a double U shape).
  • thermoelectric power generation device I 15 is produced: as shown in FIG. 9, at the design position outside the heat transfer tube 2, the semiconductor thermoelectric power generation sheet 24 is bonded by the thermal conductive silica gel 23, and the wire 6 connected to the semiconductor thermoelectric power generation sheet 24 is buried in the heat conduction.
  • the inside of the silica gel 23 is taken out and connected to the DC/DC converter 4, the battery 5 and the electric device 14; the heat transfer tube 2 containing the semiconductor thermoelectric power generation piece 24 is fixed to the side wall of the core pile 1; preferably, the semiconductor thermoelectric power generation
  • the sheet 24 is mainly embedded outside the heat transfer tube 2 of 10 to 15 m; preferably, the thermal conductivity of the thermal conductive silica gel 23 is 0.6 to 1.5 W/(m ⁇ K), which has high bonding performance and superior thermal conductivity, and is not solid.
  • the conductive conductive layer 22 is preferably a stainless steel iron or silica gel based composite material to prevent the semiconductor thermoelectric power generation sheet 24 from being damaged during construction; preferably the DC/DC converter 4 is located at the surface of the ground.
  • a compact DC/DC converter 4 preferably a battery 5, located at the surface, is a lead storage battery or a lithium ion battery or a lithium ion polymer battery or a nickel cadmium battery (in this embodiment, a lithium ion battery); preferably a wire 6, buried It is disposed in the thermal conductive silica gel 23.
  • Manufacturing a semiconductor thermoelectric power generation device II 25 selecting the material and width of the heat-conducting bottom plate 27 according to design requirements, arranging a uniform heat-dissipating tube 26 on the heat-conducting bottom plate 27, and winding the heat-dissipating tube 26 around the heat-transfer tube to which the semiconductor temperature difference power generating sheet 24 is attached 2 outside, the wire 6 connecting the semiconductor thermoelectric power generation piece 24 is embedded in the thermal conductive silica gel 23, and is taken out along the heat transfer tube 2 on the side wall of the core pile 1 to be connected to the DC/DC converter 4, the battery 5, and the electric device 14.
  • the heat pipe 26 is separately connected to the water pump II 8 for circulating the liquid in the heat pipe 26.
  • the DC/DC converter 4 and the battery 5 in the semiconductor thermoelectric power generation device II 25 are disposed on the inner side wall or the outer side wall of the core pile 1, and are protected from water and collision by the underground heat dissipation device cover 28.
  • the heat pipe 26 is a polyethylene pipe having an outer diameter of 10 to 20 mm, a wall thickness of 3 to 4 mm, and a length of 5 to 15 m (in this embodiment, the outer diameter is 10 mm, the wall thickness is 3 mm, and the length is 5 m).
  • the water pump II8 Wrapped around the outside of the heat transfer tube 2, and the circulating flow of the liquid in the heat pipe 26 is provided by the water pump II8; preferably, the water pump II8 has a power of 5 to 15w (5w in this embodiment); preferably the DC/DC converter 4 , is a step-up DC/DC converter 4; preferably
  • the battery 5 is one of a lead battery or a lithium ion battery or a lithium ion polymer battery or a nickel cadmium battery. This embodiment is a lithium ion battery.
  • the above-mentioned semiconductor thermoelectric power generation chip has a semiconductor thermoelectric power generation chip which is commonly used in the prior art, and its structure is as shown in FIGS. 13 to 14, including a hot end 20, a cold end 21, a P-type semiconductor 16, an N-type semiconductor 17, and a metal piece. 18 and a heat conducting plate 19.
  • the mud retaining wall is provided with a pilot hole, the high-pressure jet grouting pile 3 is constructed to the design depth, and the heat transfer tube 2, the semiconductor thermoelectric power generation device I 15 and the core pile 1 of the semiconductor thermoelectric power generation device II 25 are inserted to complete the high-pressure rotary jetting.
  • the construction of the ferrule composite pile system is provided with a pilot hole, the high-pressure jet grouting pile 3 is constructed to the design depth, and the heat transfer tube 2, the semiconductor thermoelectric power generation device I 15 and the core pile 1 of the semiconductor thermoelectric power generation device II 25 are inserted to complete the high-pressure rotary jetting.
  • the air conditioning system is connected: the heat transfer tube 2 is connected with the water pump I 7 and the heat exchange device 10 to form a shallow geothermal air conditioning system to provide cooling or heating to the upper building; preferably, the water pump I 7 is located at the surface, and the power is 0.55 to 1.2 kW; preferably the valve 9 is an electric two-way valve; preferably the heat exchange device 10 is a fan coil in an air conditioning apparatus.
  • thermoelectric power generation system connecting the wire 6 with the DC/DC converter 4, the battery 5 and the electric equipment 14 to form a shallow geothermal energy temperature difference power generation system, providing power for the upper building (such as lighting LED lamp power, water pump II power) Electricity); depending on the total amount of shallow geothermal energy reserves and the demand for power, cooling or heating of the upper building, it is possible to select only the air conditioning system (cooling or heating), the thermoelectric system only (power supply), or the air conditioning system and the thermoelectric system. The system is used at the same time; finally realize the construction and application of the combined high-pressure rotary jet ferrule composite pile system of cogeneration.
  • the cogeneration high-pressure rotary jet ferrule composite pile of the invention is a novel multi-functional composite energy application system, which provides the function of supporting the load of the upper building load, and uses the shallow geothermal energy to cool or heat the upper building.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Civil Engineering (AREA)
  • Paleontology (AREA)
  • Mining & Mineral Resources (AREA)
  • Sustainable Development (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
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  • Engine Equipment That Uses Special Cycles (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

L'invention concerne un système de pieu renforcé par un pieu sol-ciment à injection par jet pour la génération combinée de refroidissement, de chaleur et d'énergie, comprenant des pieux renforcés par un pieu sol-ciment à injection par jet, des tuyaux de transfert de chaleur (2), un système de climatisation et un système de génération d'énergie à différence de température. Le système de climatisation comprend un dispositif d'échange de chaleur (10), les tuyaux de transfert de chaleur (2) échangeant en premier la chaleur avec la masse du sol et étant ensuite reliés au dispositif d'échange de chaleur (10) au-dessus de manière à ajuster la température intérieure d'un bâtiment. Le système de génération d'énergie à différence de température comprend un système de génération d'énergie à différence de température à semi-conducteur I (15) et un système de génération d'énergie à différence de température à semi-conducteur II (25), l'énergie électrique obtenue étant utilisée pour l'alimentation électrique d'un équipement électrique (14) au-dessus. Le système fournit de l'énergie électrique à un bâtiment au-dessus en utilisant une différence de température entre le liquide dans les tuyaux d'échange de chaleur (2) et le sol et fournit une fonction de support pour supporter les charges du bâtiment au-dessus et la fonction de refroidissement ou de chauffage du bâtiment au-dessus au moyen d'une énergie géothermique peu profonde et améliore l'efficacité d'échange de chaleur entre les tuyaux d'échange de chaleur (2) et la masse du sol. Le système réalise efficacement l'utilisation combinée des pieux renforcés par un pieu sol-ciment à injection par jet en termes de mécanique, de thermostatique et d'électricité et réalise également l'utilisation polyvalente à la demande et à entrelacement temporel de l'énergie géothermique peu profonde d'une manière efficace.
PCT/CN2017/080632 2016-07-18 2017-04-14 Système de pieu renforcé par un pieu sol-ciment à injection par jet pour la génération combinée de refroidissement, de chaleur et d'énergie et son procédé de construction Ceased WO2018014609A1 (fr)

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US10527319B2 (en) 2017-06-15 2020-01-07 Bic Inc. Geothermal heat exchange system and construction method thereof
CN114809128A (zh) * 2022-05-12 2022-07-29 南京工业大学 加热-预压-电渗自供应的能量循环软土固结模拟箱
NL1044009B1 (en) * 2021-04-22 2022-11-01 Lodewijk Peter Ruijters Drs Shallow depth geothermal electricity generator
CN116556402A (zh) * 2023-04-21 2023-08-08 江苏科技大学 一种适用于深远海风电的储能单桩及其施工方法

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CN107332331A (zh) * 2017-08-28 2017-11-07 浙江科技学院（浙江中德科技促进中心） 具有节能作用的水底土石层中的沉管隧道管段及节能方法
CN108457609A (zh) * 2018-03-23 2018-08-28 吉林大学 一种温差发电式高温钻井液冷却循环系统
CN110289788A (zh) * 2019-07-09 2019-09-27 中铁第一勘察设计院集团有限公司 利用轨道结构温度差的热电发电装置
CN112279618A (zh) * 2020-11-12 2021-01-29 中冶成都勘察研究总院有限公司 一种用于高压旋喷施工的添加剂
CN113834842B (zh) * 2021-05-18 2024-12-13 重庆大学 一种能量桩群桩温度-变形测量透明土试验装置及其试验方法
CN120444764B (zh) * 2025-07-09 2025-09-30 上海隧道工程有限公司 基于有机朗肯循环原理的一体式能源桩及其施工方法

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CN116556402A (zh) * 2023-04-21 2023-08-08 江苏科技大学 一种适用于深远海风电的储能单桩及其施工方法

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