CN106091451A - Coaxial cellular shallow layer ground-temperature energy underground pipe - Google Patents
Coaxial cellular shallow layer ground-temperature energy underground pipe Download PDFInfo
- Publication number
- CN106091451A CN106091451A CN201610628189.8A CN201610628189A CN106091451A CN 106091451 A CN106091451 A CN 106091451A CN 201610628189 A CN201610628189 A CN 201610628189A CN 106091451 A CN106091451 A CN 106091451A
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- China
- Prior art keywords
- pipe
- cellular
- tube wall
- coaxial
- water inlet
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- 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
-
- 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
- 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)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a kind of coaxial cellular shallow layer ground-temperature energy underground pipe, including tube wall, on the axial line of tube wall, water inlet pipe is set, it is with sealing coat on the outer surface of water inlet pipe, it is provided with return pipe between outer surface and the tube wall inwall of sealing coat, return pipe is the arced tube structure being separated by the polylith dividing plate being center of circle arranged radially with axial line between inner surface of tube wall and sealing coat outer surface, and it is the arc cellular structures being separated on surface and by the polylith dividing plate that is center of circle arranged radially with axial line that described sealing coat is wrapped around water inlet pipe.The invention has the beneficial effects as follows, heat exchange efficiency is high, reduces difficulty of construction.
Description
Technical field
The present invention relates to underground pipe tube type design field, a kind of coaxial cellular shallow layer ground-temperature energy underground pipe.
Background technology
Underground pipe many employings " U " the type structure of at present both at home and abroad shallow layer ground-temperature energy exploitation, have list " U " and double " U " point, pipe
Footpath typically uses φ 25 and 32 two kinds of models of φ, and tubing uses polyethylene (PE) pipe, polrvinyl chloride (PVC) pipe or high-density polyethylene
Alkene (HDPE) is managed.During pipe laying, water inlet pipe and return pipe use pipe clamp to separate, and prevent from directly contacting cause heat short into/return pipe
Road.
The shortcoming of employing " U " type pipe is:
A. individually separating with return pipe due to water inlet pipe, the globality of pipe is poor, and intensity is low, easily causes squeezing of pipe during pipe laying
Compressive strain or bending.
B. separate the pipe clamp into/return pipe often to fall off during down tube, cause and be close together into/return pipe,
Cause the heat short circuit into/backwater.
C. " U " type water inlet tube pipe all contacts with stratum with return pipe, and enters/contact area the phase on return pipe and stratum
When, reduce heat transfer effect between return pipe and stratum significantly.
Summary of the invention
The invention aims to solve the problems referred to above, devise a kind of coaxial cellular shallow layer ground-temperature energy underground pipe.
Realizing above-mentioned purpose the technical scheme is that, a kind of coaxial cellular shallow layer ground-temperature energy underground pipe, including pipe
Wall, the axial line of tube wall arranges water inlet pipe, and the outer surface of water inlet pipe is with sealing coat, in the outer surface of sealing coat and tube wall
Being provided with return pipe between wall, return pipe is by with axial line for footpath, the center of circle between inner surface of tube wall and sealing coat outer surface
The arced tube structure being separated to the polylith dividing plate of arrangement, it is on surface and to pass through that described sealing coat is wrapped around water inlet pipe
The arc cellular structures that is separated of polylith dividing plate being center of circle arranged radially with axial line.
The tube wall of described water inlet pipe uses the material that heat conductivity is less to make.
The tube wall of described water inlet pipe is made up of PVC material or high-density polyethylene material.
Described be center of circle arranged radially with axial line the quantity of polylith dividing plate be four pieces.
It is filled with air in the cellular structures of described sealing coat.
Described tube wall is that the material that heat conductivity is higher is made.
Described tube wall is made up of the high-density polyethylene material that heat conductivity is higher.
The thickness of described sealing coat is 3-5mm.
The thickness of described water inlet pipe tube wall is 3-4mm.
Utilizing the coaxial cellular shallow layer ground-temperature energy underground pipe that technical scheme makes, shallow layer ground-temperature energy is novel
Regenerative resource, can be widely used for heating and the refrigeration of building.Grind according to Chinese Academy of Geological Sciences's hydrogeological environment geology
Studying carefully the investigation such as institute's Wang Gui tinkling of pieces of jade, the total shallow layer ground-temperature energy thermal capacity of all provincial capitals of China is 5.41 × 1016kJ/ DEG C, underground pipe
Heat pump heat exchange in summer power is 5.61 × 108kW, and heat exchange in winter power is 3.71 × 108kW, the exploitation of shallow layer ground-temperature energy
Utilization prospects is wide.The problem that the underground pipe cast of this invention can solve " U " pipe pipe laying difficulty, heat is short-circuit, heat exchange efficiency is low,
It applies the heat exchange efficiency of raising underground pipe that can be bigger, reduces the difficulty of construction of underground pipe, promotes shallow earth further
Exploitation, economic results in society are the most notable.
Accompanying drawing explanation
Fig. 1 is the structural representation of coaxial cellular shallow layer ground-temperature energy underground pipe of the present invention；In figure, 1, water inlet pipe；
2, sealing coat；3, return pipe；4, tube wall.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is specifically described, if Fig. 1 is coaxial cellular shallow earth of the present invention
The structural representation of energy underground pipe, as it can be seen, a kind of coaxial cellular shallow layer ground-temperature energy underground pipe, including tube wall 4, tube wall
Water inlet pipe 1 is set on axial line, the outer surface of water inlet pipe is with sealing coat 2, between outer surface and the tube wall inwall of sealing coat
Being provided with return pipe 3, return pipe is by radially arranging with axial line for the center of circle between inner surface of tube wall and sealing coat outer surface
The arced tube structure that the polylith dividing plate of row is separated, it is on surface and by with axle that described sealing coat is wrapped around water inlet pipe
Heart line is the arc cellular structures that the polylith dividing plate of center of circle arranged radially is separated.Wherein, the pipe of described water inlet pipe 1
Wall uses the material that heat conductivity is less to make；The tube wall of described water inlet pipe 1 is by PVC material or high-density polyethylene material
Make；Described be center of circle arranged radially with axial line the quantity of polylith dividing plate be four pieces；Described sealing coat 2 cellular many
Air it is filled with in pore structure；Described tube wall 4 is that the material that heat conductivity is higher is made；Described tube wall 4 is by heat conductivity
Higher high-density polyethylene material is made；The thickness of described sealing coat 2 is 3-5mm；The thickness of described water inlet pipe 1 tube wall is
3-4mm。
The feature of the technical program is to use concentric shafts and the cellular structure combined, as it is shown in figure 1, water inlet pipe is positioned at
The center of central siphon with one heart, uses the single hole pipe of minor diameter, and pipe thickness suitably increases, and uses the thermal insulating material that heat conductivity is little
Material.It is a cellular porous interlayer of circle outside water inlet pipe, utilizes the low heat conductivity of air can be effectively isolated into water and return piping.Return
Water pipe is positioned at the periphery of concentric central siphon, and forms a unified entirety by the dividing plate of arranged radially with water inlet pipe, to increase
The intensity of underground pipe；Return pipe pipe wall material uses the material that heat conductivity is big, improves the heat exchange efficiency between stratum.
In the technical program, inner tube is water inlet pipe, for ensureing to enter the flow of heat exchanging fluid in underground pipe system, water inlet
Bore can use De10～De15, and tubing can use the relatively low pvc pipe (heat conductivity about 0.17W/m.K) of heat conductivity or height
Density polyethylene (HDPE) pipe (heat conductivity about 0.5W/m.K), wall thickness 3～4mm.This pipe effect be by earth source heat pump condenser/
The water outlet of vaporizer imports at the certain depth of underground, does not directly carry out heat exchange with stratum, is also not subject to stratum to underground pipe
Extruding, but require to be thermally isolated between the backwater outside pipe, it is to avoid heat short circuit.Select the material that heat conductivity is little the most as far as possible
Material, wall thickness suitably increases.The annular space of sealing coat is 3～5mm away from (thickness), radial direction dividing plate be divided into cellular porous knot
Structure, internal filling air (heat conductivity 0.025W/m.K when 10 DEG C), it is effectively isolated water inlet pipe and return pipe.Return pipe diameter
Depend on the underground pipe bore diameter of construction, general desirable internal diameter De32～De50, use the high density that heat conductivity is higher to gather
Ethylene (HDPE) pipe (heat conductivity about 0.5W/m.K), wall thickness 3～4mm.By arranging 3～6 pieces of dividing plates between outer tube and inner tube
Being attached, preferably 4 pieces, inner and outer pipes forms a unified entirety, improves the intensity of underground pipe.This pipe effect is by water inlet pipe
Import and carry out heat exchange between hot/cold water and stratum at the certain depth of underground, and be transmitted back to earth source heat pump condenser/evaporator
Water inlet end, and bear the stratum extruding to underground pipe.Because wanting to carry out heat exchange between stratum, select heat conductivity as far as possible
Big material.The intensity increasing underground pipe can realize with the quantity increasing internal partition by selecting the material of high intensity.
In the technical program, water inlet pipe is positioned at the center of concentric shafts, internal diameter 10mm, wall thickness 3mm, material be PVC or
HDPE material.Annular space area is 78.54mm2.Sealing coat is positioned at the outside of water inlet pipe, the inner side of outlet pipe, annular space away from 3mm,
Being connected with water inlet pipe, outlet pipe by the dividing plate of four pieces of wide 3mm, material is PVC or HDPE material.Annular space area is 142.98mm2.
Outlet pipe is positioned at the outside of concentric shafts, and annular space, away from 5mm, is connected by dividing plate and the sealing coat of four pieces of wide 3mm, water inlet pipe, material
For PVC or HDPE material.Annular space area is: 482.1mm2.
About 6 times of the annular space area that annular space area is water inlet pipe of this cast outlet pipe, i.e. the stream of fluid in return pipe
Speed is in water inlet pipe about the 1/6 of rate of flow of fluid, it is ensured that sufficient heat-exchange time.The external diameter of underground pipe is 44mm, heat-transfer surface
Long-pending big.
Technique scheme only embodies the optimal technical scheme of technical solution of the present invention, those skilled in the art
Some variations may made some of which part all embody the principle of the present invention, belong to protection scope of the present invention it
In.
Claims (9)
1. a coaxial cellular shallow layer ground-temperature energy underground pipe, including tube wall (4), it is characterised in that set on the axial line of tube wall
Put water inlet pipe (1), the outer surface of water inlet pipe is with sealing coat (2), be provided with back between outer surface and the tube wall inwall of sealing coat
Water pipe (3), return pipe passes through with axial line for center of circle arranged radially between inner surface of tube wall and sealing coat outer surface
The arced tube structure that polylith dividing plate is separated, it is on surface and by with axial line that described sealing coat is wrapped around water inlet pipe
The arc cellular structures being separated for the polylith dividing plate of center of circle arranged radially.
Coaxial cellular shallow layer ground-temperature energy underground pipe the most according to claim 1, it is characterised in that described water inlet pipe (1)
Tube wall use the less material of heat conductivity to make.
Coaxial cellular shallow layer ground-temperature energy underground pipe the most according to claim 2, it is characterised in that described water inlet pipe (1)
Tube wall be made up of PVC material or high-density polyethylene material.
4. according to described coaxial cellular shallow layer ground-temperature energy underground pipe arbitrary in claim 1-3, it is characterised in that described with
Axial line be the quantity of the polylith dividing plate of center of circle arranged radially be four pieces.
5. according to described coaxial cellular shallow layer ground-temperature energy underground pipe arbitrary in claim 1-3, it is characterised in that described every
It is filled with air in the cellular structures of absciss layer (2).
6. according to described coaxial cellular shallow layer ground-temperature energy underground pipe arbitrary in claim 1-3, it is characterised in that described pipe
Wall (4) is that the material that heat conductivity is higher is made.
Coaxial cellular shallow layer ground-temperature energy underground pipe the most according to claim 6, it is characterised in that described tube wall (4) is
It is made up of the high-density polyethylene material that heat conductivity is higher.
8. according to described coaxial cellular shallow layer ground-temperature energy underground pipe arbitrary in claim 1-3, it is characterised in that described every
The thickness of absciss layer (2) is 3-5mm.
9. according to described coaxial cellular shallow layer ground-temperature energy underground pipe arbitrary in claim 1-3, it is characterised in that described in enter
The thickness of water pipe (1) tube wall is 3-4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610628189.8A CN106091451A (en) | 2016-08-01 | 2016-08-01 | Coaxial cellular shallow layer ground-temperature energy underground pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610628189.8A CN106091451A (en) | 2016-08-01 | 2016-08-01 | Coaxial cellular shallow layer ground-temperature energy underground pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106091451A true CN106091451A (en) | 2016-11-09 |
Family
ID=57453562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610628189.8A Pending CN106091451A (en) | 2016-08-01 | 2016-08-01 | Coaxial cellular shallow layer ground-temperature energy underground pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106091451A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885386A (en) * | 2017-04-26 | 2017-06-23 | 江苏省地矿地热能有限公司 | A kind of concentric tubes heat exchanger tube |
| CN112524828A (en) * | 2020-12-07 | 2021-03-19 | 河北建筑工程学院 | Buried pipe heat exchanger with topology optimization structure |
-
2016
- 2016-08-01 CN CN201610628189.8A patent/CN106091451A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885386A (en) * | 2017-04-26 | 2017-06-23 | 江苏省地矿地热能有限公司 | A kind of concentric tubes heat exchanger tube |
| CN112524828A (en) * | 2020-12-07 | 2021-03-19 | 河北建筑工程学院 | Buried pipe heat exchanger with topology optimization structure |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161109 |