CN105627605A - Vertical buried tube heat exchanger with multiple water supply branch tubes and one water return tube - Google Patents

Vertical buried tube heat exchanger with multiple water supply branch tubes and one water return tube Download PDF

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Publication number
CN105627605A
CN105627605A CN201610017153.6A CN201610017153A CN105627605A CN 105627605 A CN105627605 A CN 105627605A CN 201610017153 A CN201610017153 A CN 201610017153A CN 105627605 A CN105627605 A CN 105627605A
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CN
China
Prior art keywords
tube
water supply
pipe
heat exchanger
return pipe
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Granted
Application number
CN201610017153.6A
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Chinese (zh)
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CN105627605B (en
Inventor
杜震宇
岳秀萍
张静
程远达
刘少杰
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TAIYUAN ZHIBO THERMAL POWER ENGINEERING DESIGN Co.,Ltd.
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Taiyuan University of Technology
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Priority to CN201610017153.6A priority Critical patent/CN105627605B/en
Publication of CN105627605A publication Critical patent/CN105627605A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T10/00—Geothermal collectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00—Heat pumps
    • F25B30/06—Heat pumps characterised by the source of low potential heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T10/00—Geothermal collectors
    • F24T2010/50—Component parts, details or accessories
    • 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

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  • Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)

Abstract

The invention discloses a vertical buried tube heat exchanger with multiple water supply branch tubes and one water return tube, and the vertical buried tube heat exchanger is used for a ground source heat pump system. The heat exchanger comprises the multiple vertical water supply branches tubes and the vertical water return tube, wherein a coaxial tube in tube is used for preserving the heat of the water return tube, and the water return tube and an outer-layer coupler are isolated by a matched tube strap every 3-5m; the plurality of the water supply branch tubes are uniformly distributed at the periphery of the tube in tube; the centers of the water supply branch tubes are arranged on the concentric circles of the water return tube; and the water supply branch tubes, the water return tube and the coupler are separately connected to water supply straight tubes, a water return straight tube and a coupler straight tube on a bottom cylindrical joint through matched electro-fusion couplers. According to the vertical buried tube heat exchanger, quantity of heat exchange for unit well depth is improved; the vertical buried tube heat exchanger is stable in structure, is convenient for construction, and can be placed into a well hole once; the bottom cylindrical joint is relatively high in pressure loading capacity, and is not liable to damage; the tube in tube is used for preserving the heat of the water return tube, so that the phenomenon that a common heat-preserving layer is invalid after being wetted during common construction is effectively avoided; and meanwhile, a thermal short-circuit phenomenon among the water supply tubes and the water return tube as well as heat exchange between the water return tube and a saturated heat exchange layer are also avoided, so that the heat exchange efficiency is improved, and the initial cost is reduced.

Description

Many for a center return pipe vertical buried pipe heat exchanger
Technical field
The present invention relates to the ground heat exchanger in a kind of earth-source hot-pump system, be specifically related to more than one for a center return pipe vertical buried pipe heat exchanger.
Background technology
The advantages such as vertical buried pipe earth-source hot-pump system is few owing to having occupation of land, stable work in work, receive extensive concern. Single U of normal use, double-H groove weld underground heat exchanger in current engineering, unit well depth heat exchange amount is little, and there is hot short circuit phenomenon between return pipe, makes thermal loss, is unfavorable for heat exchange. In order to meet heat exchange demand, hole of generally only digging a well more, not only increase floor space, also make the initial cost of earth-source hot-pump system be greatly increased, hinder the popularization and application of earth-source hot-pump system. Therefore, in order to increase unit well depth heat exchange amount, improve heat exchanger performance, and reduce initial cost, save floor space it is necessary to form and structure to existing buried tube heat exchanger reasonably optimize, make earth source heat pump obtain better promoting and development.
Summary of the invention
It is desirable to provide time center return pipe vertical buried pipe heat exchanger of many confessions that a kind of simple in construction, heat exchange efficiency height, easy construction, initial cost are relatively low.
The invention provides more than one for a center return pipe vertical buried pipe heat exchanger, including joint, water supply arm, return pipe and sleeve pipe, joint is positioned at exchanger base, including charge for remittance device, water supply straight tube, backwater straight tube, sleeve pipe straight tube and reinforcement gusset, charge for remittance device top is column structure, and bottom is conical structure; Portion is provided with many vertical water supply arms and a vertical return on heat exchangers; Return pipe with its outside sleeve pipe form coaxial tube-in-tube, between return pipe and outer layer sleeve, in the vertical direction is isolated every 3��5m pipe clamp; The center of circle of return pipe and the center superposition of heat exchanger, many water supply arms are evenly distributed on around coaxial tube-in-tube, and water supply arm is centrally located on the concentric circular of return pipe; Described water supply arm, return pipe and sleeve pipe are connected by supporting electro-fusion sleeve with the water supply straight tube on the cylindricality joint of exchanger base, backwater straight tube and sleeve pipe straight tube respectively; Many water supply arm in the vertical directions use injection molding tube card location every 3��5m scope place so that it is keep constant spacing in wellhole.
In such scheme, described vertical water supply arm is provided with 2 ~ 6, is provided with the water supply straight tube of equal number on the cylindricality joint of bottom.
In such scheme, described return pipe adopts tube-in-tube insulation, and heat preserving mode is any one of tube-in-tube vacuum heat-insulating layer, tube-in-tube rubber and plastic thermal insulation layer, tube-in-tube air heat-insulation layer or the insulation of tube-in-tube vacuum layer low-radiation film.
The present invention'sBeneficial effect:
(1) spacing of adjacent feed pipe is suitable, is fully contacted with banketing, decreases hot dry between feed pipe disturbing, increase unit well depth heat exchange amount, improve the heat exchange property of buried tube heat exchanger, decrease drilling hole number, save floor space premise of popularization and application in city;
(2) return pipe adopts tube-in-tube to be incubated, the phenomenon that when effectively prevent construction, common heat-insulation layer is drenched and lost efficacy, also avoid the heat exchange for the hot short circuit phenomenon between return pipe and return pipe and saturated heat exchange interlayer simultaneously, substantially increase heat exchange efficiency, and adopt a return pipe to replace many return pipes, save heat exchanger cost;
(3) feed pipe and return pipe are connected as a single entity by cylindricality joint, feed pipe after 3��5m length is with injection molding tube card location, stabilized structure, it is possible to disposable put in wellhole, simple to operate, easy construction, decrease construction workload;
(4) bottom cylindricality joint bearing capacity is strong, less damaged, adds the service life of earth source heat pump, improves the economic benefit of earth source heat pump so that it is be more easy to popularization.
Accompanying drawing explanation
Fig. 1 is two perspective view supplying a center return pipe vertical buried pipe heat exchanger.
Fig. 2 is twice the center main TV structure schematic diagrams of return pipe vertical buried pipe heat exchanger of confession.
Fig. 3 is the left view of Fig. 2.
Fig. 4 is the sectional view of Fig. 2.
Fig. 5 is three perspective view supplying a center return pipe vertical buried pipe heat exchanger.
Fig. 6 is the three time center main TV structure schematic diagrams of return pipe vertical buried pipe heat exchanger of confession.
Fig. 7 is the left view of Fig. 6.
Fig. 8 is the sectional view of Fig. 6.
Fig. 9 is four perspective view supplying a center return pipe vertical buried pipe heat exchanger.
Figure 10 is the four time center main TV structure schematic diagrams of return pipe vertical buried pipe heat exchanger of confession.
Figure 11 is the sectional view of Figure 10.
In figure, 1-charge for remittance device; 2-water supply straight tube; 3-feed pipe electro-fusion sleeve; 4-water supply arm; 5-backwater straight tube; 6-return pipe electro-fusion sleeve; 7-return pipe; 8-sleeve pipe straight tube; 9-sleeve pipe electro-fusion sleeve; 10-sleeve pipe; 11-strengthens gusset; 12-pipe clamp.
Detailed description of the invention
Further illustrate the present invention by the examples below, but be not limited to following example.
Embodiment 1:
The present embodiment provides a kind of two for a center return pipe vertical buried pipe heat exchanger.
As shown in Fig. 1 ~ 4, vertical water supply arm is provided with 2, is provided with the water supply straight tube of equal number on the cylindricality joint of bottom.
Heat exchanger includes charge for remittance device 1 and water supply straight tube 2, backwater straight tube 5, sleeve pipe straight tube 8, water supply arm 4, return pipe 7, sleeve pipe 10, strengthens gusset 11, and charge for remittance device 1 is positioned at exchanger base, and charge for remittance device 1 top is column structure, and bottom is conical structure; Portion is provided with two vertical water supply arms 4 and a vertical return 7 on heat exchangers; Return pipe 7 with its outside sleeve pipe 10 form coaxial tube-in-tube, between return pipe 7 and outer layer sleeve 10, in the vertical direction is isolated every 3m pipe clamp 12; The center of circle of return pipe 7 and the center superposition of heat exchanger, two water supply arms 4 are evenly distributed on around coaxial tube-in-tube, and two tube hubs that supply water are 180 �� with the return pipe line of centres, and water supply arm 4 is centrally located on the concentric circular of return pipe 7; Described water supply arm 4, return pipe 7 and sleeve pipe 10 are connected by supporting electro-fusion sleeve with the water supply straight tube 2 on the cylindricality joint of exchanger base, backwater straight tube 5 and sleeve pipe straight tube 8 respectively: water supply arm 4 lower end connects feed pipe electro-fusion sleeve 3, return pipe 7 lower end connects back to water pipe electro-fusion sleeve 6, and sleeve pipe 10 lower end connects sleeve pipe electro-fusion sleeve 9; Two water supply arm in the vertical directions use injection molding tube card location every 3m scope place so that it is keep constant spacing in wellhole, so that two become as a whole for a center return pipe vertical buried pipe heat exchanger. Because vertical buried pipe heat exchanger physical length is 10��200m, for preventing heat exchanger from deforming, adopt injection molding tube card location.
Strengthen gusset 11 to be used for connecting water supply straight tube and sleeve pipe straight tube, make on joint stabilized structure between water supply straight tube and sleeve pipe.
Described return pipe adopts tube-in-tube insulation, and heat preserving mode is tube-in-tube vacuum heat-insulating layer.
The radius ratio of return pipe 7 and sleeve pipe 10 is 2:1��3:1. In engineering, water supply arm, return pipe can select different calibers as required, and return pipe caliber is identical with feed pipe caliber or bigger.
Concrete installation and operational approach be:
Before two put into wellhole construction for a center return pipe vertical buried pipe heat exchanger, first return pipe is arranged thermal insulation casing in pipe clamp rear enclosure every 3��5m, form tube-in-tube air heat-insulation layer; Secondly the arm that vertically supplies water, center return pipe, a thermal insulation casing are connected with supporting electro-fusion sleeve respectively with the water supply straight tube of bottom cylindricality joint, backwater straight tube, sleeve pipe straight tube respectively; Again water supply arm is positioned every 3m length injection molding tube card, how to become as a whole for a center return pipe vertical buried pipe heat exchanger so that whole; Then heat exchanger overall time is placed in wellhole, and fills up drilling well with backfilling material; Then after the outer tube-in-tube air heat-insulation layer top of well being sealed, by air heat-insulation layer evacuation, the insulation of tube-in-tube vacuum layer is formed; Finally, water supply arm, return pipe are connected with water knockout drum, water collector respectively, access earth-source hot-pump system main frame.
Embodiment 2:
The present embodiment provides a kind of three for a center return pipe vertical buried pipe heat exchanger.
As shown in Fig. 5 ~ 8, vertical water supply arm is provided with 3, is provided with the water supply straight tube of equal number on the cylindricality joint of bottom.
Heat exchanger includes charge for remittance device 1 and water supply straight tube 2, backwater straight tube 5, sleeve pipe straight tube 8, water supply arm 4, return pipe 7, sleeve pipe 10, strengthens gusset 11, and charge for remittance device 1 is positioned at exchanger base, and charge for remittance device 1 top is column structure, and bottom is conical structure; Portion is provided with three vertical water supply arms 4 and a vertical return 7 on heat exchangers; The center of circle of return pipe 7 and the center superposition of heat exchanger, three water supply arms 4 are evenly distributed on around coaxial tube-in-tube, and three tube hubs that supply water are 120 �� with the return pipe line of centres, and water supply arm 4 is centrally located on the concentric circular of return pipe 7; Described water supply arm 4, return pipe 7 and sleeve pipe 10 are connected by supporting electro-fusion sleeve with the water supply straight tube 2 on the cylindricality joint of exchanger base, backwater straight tube 5 and sleeve pipe straight tube 8 respectively: water supply arm 4 lower end connects feed pipe electro-fusion sleeve 3, return pipe 7 lower end connects back to water pipe electro-fusion sleeve 6, and sleeve pipe 10 lower end connects sleeve pipe electro-fusion sleeve 9; Three water supply arm in the vertical directions use injection molding tube card location every 4m scope place so that it is keep constant spacing in wellhole, so that three become as a whole for a center return pipe vertical buried pipe heat exchanger.
The installation of the present embodiment and operational approach are with embodiment 1.
Embodiment 3:
The present embodiment provides a kind of four for a center return pipe vertical buried pipe heat exchanger.
As shown in Fig. 9 ~ 11, vertical water supply arm is provided with 4, is provided with the water supply straight tube of equal number on the cylindricality joint of bottom.
Heat exchanger includes charge for remittance device 1 and water supply straight tube 2, backwater straight tube 5, sleeve pipe straight tube 8, water supply arm 4, return pipe 7, sleeve pipe 10, strengthens gusset 11, and charge for remittance device 1 is positioned at exchanger base, and charge for remittance device 1 top is column structure, and bottom is conical structure; Portion is provided with four vertical water supply arms 4 and a vertical return 7 on heat exchangers; The center of circle of return pipe 7 and the center superposition of heat exchanger, four water supply arms 4 are evenly distributed on around coaxial tube-in-tube, and four tube hubs that supply water are 90 �� with the return pipe line of centres, and water supply arm 4 is centrally located on the concentric circular of return pipe 7; Described water supply arm 4, return pipe 7 and sleeve pipe 10 are connected by supporting electro-fusion sleeve with the water supply straight tube 2 on the cylindricality joint of exchanger base, backwater straight tube 5 and sleeve pipe straight tube 8 respectively: water supply arm 4 lower end connects feed pipe electro-fusion sleeve 3, return pipe 7 lower end connects back to water pipe electro-fusion sleeve 6, and sleeve pipe 10 lower end connects sleeve pipe electro-fusion sleeve 9; Four water supply arm in the vertical directions use injection molding tube card location every 5m scope place so that it is keep constant spacing in wellhole, so that four become as a whole for a center return pipe vertical buried pipe heat exchanger.
The installation of the present embodiment and operational approach are with embodiment 1.

Claims (3)

1. for a center return pipe vertical buried pipe heat exchanger more than one kind, it is characterized in that: heat exchanger includes joint, water supply arm, return pipe and sleeve pipe, joint is positioned at exchanger base, including charge for remittance device, water supply straight tube, backwater straight tube, sleeve pipe straight tube and reinforcement gusset, charge for remittance device top is column structure, and bottom is conical structure; Portion is provided with many vertical water supply arms and a vertical return on heat exchangers; Return pipe with its outside sleeve pipe form coaxial tube-in-tube, between return pipe and outer layer sleeve, in the vertical direction is isolated every 3��5m pipe clamp; The center of circle of return pipe and the center superposition of heat exchanger, many water supply arms are evenly distributed on around coaxial tube-in-tube, and water supply arm is centrally located on the concentric circular of return pipe; Described water supply arm, return pipe and sleeve pipe are connected by supporting electro-fusion sleeve with the water supply straight tube on the cylindricality joint of exchanger base, backwater straight tube and sleeve pipe straight tube respectively; Many water supply arm in the vertical directions use injection molding tube card location every 3��5m scope place so that it is keep constant spacing in wellhole.
2. according to claim 1 many for a center return pipe vertical buried pipe heat exchanger, it is characterised in that: described vertical water supply arm is provided with 2 ~ 6, is provided with the water supply straight tube of equal number on the cylindricality joint of bottom.
3. according to claim 1 many for a center return pipe vertical buried pipe heat exchanger, it is characterized in that: described return pipe adopts tube-in-tube insulation, heat preserving mode is any one of tube-in-tube vacuum heat-insulating layer, tube-in-tube rubber and plastic thermal insulation layer, tube-in-tube air heat-insulation layer or the insulation of tube-in-tube vacuum layer low-radiation film.
CN201610017153.6A 2016-01-12 2016-01-12 Supply a center return pipe vertical buried pipe heat exchanger more Active CN105627605B (en)

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Application Number Priority Date Filing Date Title
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CN105627605B CN105627605B (en) 2018-04-03

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016156468A (en) * 2015-02-25 2016-09-01 株式会社オンダ製作所 Thermal fusion joint
JP2016156501A (en) * 2016-02-04 2016-09-01 株式会社オンダ製作所 Thermal fusion joint
CN111578543A (en) * 2020-05-28 2020-08-25 山东建筑大学 Middle-deep sleeve type geothermal heat exchanger device containing radiation heat insulation film
CN113587464A (en) * 2021-06-30 2021-11-02 北京市地质工程勘察院 Open type coaxial sleeve heat exchange system for geothermal well
EP4317833A1 (en) * 2022-08-01 2024-02-07 Universitat Politècnica de València Piping for adapted thermal conductivity

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CN102692148A (en) * 2011-03-22 2012-09-26 杨泰和 Pipe member equipped with heat insulation core pipeline and u-shaped annularly-distributed pipeline
CN103868372A (en) * 2012-12-13 2014-06-18 财团法人工业技术研究院 Geothermal heat exchange system and geothermal heat energy power generation and geothermal heat pump system thereof
CN204388423U (en) * 2014-12-25 2015-06-10 重庆大学 A kind of self-heat conserving underground pipe for underground heat

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* Cited by examiner, † Cited by third party
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CN2200799Y (en) * 1994-06-17 1995-06-14 张庆玉 Machine for pumping underground hot water
DE19727493A1 (en) * 1997-06-27 1999-01-07 Ulrich Pflueger Geothermal probe in borehole, for heat pump system
DE20106707U1 (en) * 2001-04-18 2001-10-11 Hansen Toralf Earth probe for extracting heat from the ground
JP2003302109A (en) * 2002-04-08 2003-10-24 Ariga Sakusen Kogyo:Kk Geothermal heat exchanger
CN2650029Y (en) * 2003-06-11 2004-10-20 河南西亚特空调设备有限公司 Radiation well water heat exchange water-returning device
CN2632588Y (en) * 2003-06-26 2004-08-11 扶承发 Vertical soil heat exchanger with double circuit
CN2784829Y (en) * 2005-04-11 2006-05-31 刘兴中 Pipe for underground heat exchanger
CN1786598A (en) * 2005-11-02 2006-06-14 浙江大学 Heat exchanging system for based pile of earth source air conditioner
CN101375113A (en) * 2006-01-27 2009-02-25 马泰夫公司 Pipe and system for utilizing low-energy
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EP2113728A1 (en) * 2008-04-29 2009-11-04 Akatherm FIP GmbH Coaxial probe for generating geothermal energy
CN101886851A (en) * 2009-05-11 2010-11-17 王庆鹏 Ground-source heat pump vertical-pipe heat exchanger technology
CN201514079U (en) * 2009-10-28 2010-06-23 北京依科瑞德地源科技有限责任公司 Heat exchanger of ground-source heat pump
CN201628420U (en) * 2010-01-05 2010-11-10 上海地缘环境科技有限公司 Extension-type underground heat exchanger for ground source heat pump
CN201844603U (en) * 2010-11-08 2011-05-25 山东金潮新型建材有限公司 Terrestrial heat exchanger
CN202002530U (en) * 2011-03-18 2011-10-05 浙江伟星新型建材股份有限公司 Integrated geothermal head
CN102692148A (en) * 2011-03-22 2012-09-26 杨泰和 Pipe member equipped with heat insulation core pipeline and u-shaped annularly-distributed pipeline
CN202013130U (en) * 2011-03-28 2011-10-19 广东联塑科技实业有限公司 Underground weighting connector of a ground source heat pump air-conditioner
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CN204388423U (en) * 2014-12-25 2015-06-10 重庆大学 A kind of self-heat conserving underground pipe for underground heat

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016156468A (en) * 2015-02-25 2016-09-01 株式会社オンダ製作所 Thermal fusion joint
JP2016156501A (en) * 2016-02-04 2016-09-01 株式会社オンダ製作所 Thermal fusion joint
CN111578543A (en) * 2020-05-28 2020-08-25 山东建筑大学 Middle-deep sleeve type geothermal heat exchanger device containing radiation heat insulation film
CN113587464A (en) * 2021-06-30 2021-11-02 北京市地质工程勘察院 Open type coaxial sleeve heat exchange system for geothermal well
EP4317833A1 (en) * 2022-08-01 2024-02-07 Universitat Politècnica de València Piping for adapted thermal conductivity

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