CN110895116B - Heat exchange pipeline for ground source heat pump - Google Patents
Heat exchange pipeline for ground source heat pump Download PDFInfo
- Publication number
- CN110895116B CN110895116B CN201911052746.6A CN201911052746A CN110895116B CN 110895116 B CN110895116 B CN 110895116B CN 201911052746 A CN201911052746 A CN 201911052746A CN 110895116 B CN110895116 B CN 110895116B
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- China
- Prior art keywords
- heat exchange
- turbulence generator
- spoilers
- ground source
- heat pump
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 239000002689 soil Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
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- 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
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- 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
Abstract
The invention relates to a heat exchange pipeline for a ground source heat pump, which comprises a main water inlet pipe, a buried vertical pipe and a turbulence generator, and is mainly technically characterized in that: the turbulence generator is a plate type spiral turbulence generator which comprises a turbulence generator shell and two spoilers, wherein each spoiler is arranged on the inner surface of the turbulence generator shell through a ratchet mechanism and enables the spoilers to rotate relative to the turbulence generator shell. The invention has reasonable design, the plate type spiral turbulence generator is arranged at the front end of the water inlet main pipe, and the medium flowing in the pipe can quickly reach a turbulent flow state through two groups of cross spoilers and the wanes which are parallel to each other on the spoilers and form an angle relative to the axis of the flow channel, thereby effectively improving the heat transfer quantity; meanwhile, the wane with a square or rectangular section structure can spontaneously generate effective transverse mixing, and can effectively enhance turbulence.
Description
Technical Field
The invention belongs to the technical field of heat exchange pipelines, and particularly relates to a heat exchange pipeline for a ground source heat pump.
Background
The ground source heat pump technology is a renewable energy geothermal energy utilization technology, and utilizes the characteristic that the temperature of a soil shallow layer is stable all the year round, so that the heat energy in the soil can be used as a heat source for heating by a heat pump in winter, and the cold energy in the soil can be used as a cold source for an air conditioner in summer. The heat is collected from the soil in winter, the temperature is increased, the indoor heating is supplied, the cold is collected from the soil in summer, and the indoor redundant heat is taken out and released to the geothermal energy.
The core component of the heat exchange pipeline ground source heat pump has great influence on the heat exchange efficiency of the ground source heat pump. The heat exchange pipeline used at present is mainly a U-shaped pipe or a spiral pipe, the contact surface of the U-shaped pipe and soil is less, the spiral pipe is difficult to apply enough force to the middle area of the spiral pipe in the tamping operation due to the structural reason in the backfilling process, the backfilling material contacted with partial area of the spiral pipe is in a loose state, and the spiral pipe cannot effectively absorb stratum energy due to loose contact. Therefore, it is necessary to improve the heat exchange pipeline structure so as to improve the heat exchange effect of the ground source heat pump heat exchange device.
The heat exchange efficiency can be effectively increased by enhancing the turbulence intensity of a heat exchange medium in the heat exchanger, the conventional spiral turbulence generator usually utilizes metal wires or thin rods with circular sections to produce turbulence, and also utilizes special-shaped guide vanes or guide holes to produce turbulence. It is known from hydrodynamics that a circular cross-section does not allow the intense mixing action required for the heat transfer performance to be improved, that an insert of circular cross-section only allows a very low cross-flow and that this mixed cross-flow is almost completely eliminated even if the viscosity of the fluid is very low, resulting in a poor heat transfer in the main flow region.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a heat exchange pipeline for a ground source heat pump, which is reasonable in design and can effectively improve the conduction effect.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a heat exchange pipeline for a ground source heat pump comprises a main water inlet pipe, buried vertical pipes and a turbulence generator, wherein the front end of the main water inlet pipe is installed with the turbulence generator, the rear end of the main water inlet pipe is connected with a group of buried vertical pipes which are connected in series, the turbulence generator is a plate type spiral turbulence generator, the plate type spiral turbulence generator comprises a turbulence generator shell and two spoilers, and each spoiler is installed on the inner surface of the turbulence generator shell through a ratchet mechanism and enables the spoilers to rotate relative to the turbulence generator shell;
the two spoilers are arranged in a relative crossing way and can adjust the crossing angle according to the required turbulent flow intensity;
a plurality of fin plates are arranged in the spoiler, and the fin plates are parallel to each other and form a certain angle relative to the axis of the flow channel.
The two spoilers are arranged on the inner surface of the shell of the turbulence generator in an opposite and crossed mode.
The fin plate is of a square or rectangular section structure.
The distance between the centers of the fin plates is more than twice the width of the fin plates.
The ratio of the thickness of the spoiler to the width of the fin plate is 1 to 3.
The buried vertical pipes are connected end to end through U-shaped pipes.
The outer wall of the underground vertical pipes is uniformly provided with four heat exchange ribs, and the heat exchange ribs between every two adjacent underground vertical pipes are connected into a whole.
The invention has the advantages and positive effects that:
1. the invention has reasonable design, the plate-type spiral turbulence generator is arranged at the front end of the water inlet main pipe, and the medium flowing in the pipe can quickly reach a turbulent flow state through two groups of cross spoilers and the fins which are arranged on the spoilers in parallel and form an angle relative to the axis of the flow channel, thereby effectively improving the heat transfer quantity.
2. According to the invention, the heat transfer ribs are added on the buried vertical pipes, so that the contact area between the heat exchange pipeline and soil is increased, the heat exchange efficiency is improved, and the phenomenon that backfill materials cannot be tamped is avoided.
3. The invention adopts the fin plate with the square or rectangular section structure, and can spontaneously generate effective transverse mixing, so that the substances needing temperature adjustment continuously move from the heating inner wall to the center of the flow channel, and the turbulence can be effectively enhanced.
4. The invention adopts larger center distance of the fin plates and the distance between the centers of the fin plates is larger than the width of the fin plates, thereby effectively reducing the pressure loss in the pipeline.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a three-dimensional block diagram of a heat exchange tube;
FIG. 3 is a spoiler structure view of the helical turbulator;
FIG. 4 is a cross-sectional view of a spoiler of the helical turbulator;
FIG. 5 is a view of a helical turbulator configuration;
FIG. 6 is a schematic view of a spoiler, turbulator housing and ratchet mounting arrangement;
in the figure, 1-main water inlet pipe; 2-burying a vertical pipe; 3-U-shaped pipe; 4-heat exchange ribs; 5-helical turbulence generators; 6-a spoiler; 7-a fin plate; 8-a turbulator housing; 9-ratchet mechanism.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings.
A heat exchange pipeline for a ground source heat pump is shown in figures 1 and 2 and comprises a water inlet main pipe 1, the water inlet main pipe 1 is connected with a group of ground-buried vertical pipes 2 which are connected in series, the ground-buried vertical pipes 2 are connected end to end through U-shaped pipes 3, a spiral turbulence generator 5 is installed at the front end of the water inlet main pipe 1, four heat exchange ribs 4 are installed on the outer wall surface of the ground-buried vertical pipes 2 and are uniformly distributed along the circumference, the heat exchange ribs between the adjacent two ground-buried vertical pipes are connected into a whole, the contact area of the heat exchange pipeline and soil is increased, and the heat exchange efficiency is improved.
As shown in fig. 3 to 6, the spiral turbulator 5 is a plate-type spiral turbulator, and the spiral turbulator 5 includes a turbulator housing 8 and two spoilers 6. Each spoiler 6 is mounted on the inner surface of the turbulator housing 8 by means of a set of ratchet mechanisms 9 such that the spoilers can rotate relative to the turbulator housing 8. The two spoilers 6 should be arranged in a crossed manner, the crossing angle has certain influence on the intensity of turbulent flow, and when the heat exchange medium, the flow velocity of fluid, the temperature and the required heat exchange efficiency in the pipeline are different, the optimal crossing angle is also different. The spoiler 6 is mounted inside the turbulence generator housing 8 by means of a ratchet mechanism 9, which can enlarge the adaptation range of the helical turbulence generator. In order to form a three-dimensional grid over the entire length of the flow channel, it is preferred that the two baffles cross at an angle of 90 degrees with respect to each other.
As shown in fig. 3, the spoiler 6 has a plurality of fins 7, the fins 7 are parallel to each other and form a certain angle with respect to the axis of the flow channel, and the spoiler 6 has an adjusting mechanism for adjusting the deflection angle of the fins 7. In a specific temperature adjusting process, a specific deflection angle can provide the optimal flow condition, and an adjusting mechanism is added on the spoiler, so that the maximum degree of freedom is provided for the spiral turbulence generator, and the heat exchanger can adapt to different working conditions.
As shown in fig. 4, the fins 7 have a square or rectangular cross-section, and from the fluid mechanics point of view, the angular fins can spontaneously generate effective lateral mixing, so that the material to be temperature-regulated continuously moves from the heated inner wall to the center of the flow channel, and the turbulence can be particularly effectively enhanced.
The distance between the centers of the fins 7 affects the pressure loss in the pipe, which is related to the heat exchange medium used, and in order to minimize the pressure loss, a larger center distance between the fins should be used. Preferably, the distance between the centers of the fins needs to be more than twice, preferably five times, the width of the fins.
The ratio of the thickness of the spoiler 6 to the width of the fin 7 parallel to the flow direction is preferably 1 to 3. The principle is that the ratio of the thickness to the width of the fin plate has certain influence on the turbulence intensity, and the appropriate ratio can enhance the turbulence intensity.
In practical application, the spiral turbulence generators can be arranged in the heat exchange pipeline according to requirements.
The working principle of the invention is as follows: when the heat exchange medium enters the spiral turbulence generator through the water inlet main pipe, strong turbulence is generated and flows into the heat exchange pipeline. The spiral turbulence generator is a novel plate-type spiral turbulence generator, two spoilers which are not known to intersect are installed in the spiral turbulence generator, fins are arranged on the spoilers, and the cross section of each fin is preferably square in order to enhance turbulence. The crossing angle of the two spoilers and the deflection angle of the fin plate can be adjusted according to the working condition so as to provide the optimal flow condition. The spiral turbulence generator has the highest turbulence generating capacity through optimization of various aspects. After strong turbulent flow is generated, the heat exchange medium flows into the heat exchange pipeline, four heat exchange ribs are arranged on the outer wall of the heat exchange pipeline, the contact area between the heat exchange pipeline and soil is increased, the heat exchange efficiency is improved, and the phenomenon that backfill materials cannot be tamped cannot occur.
Nothing in this specification is said to apply to the prior art.
It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but also includes other embodiments that can be derived from the technical solutions of the present invention by those skilled in the art.
Claims (7)
1. A heat exchange pipeline for a ground source heat pump comprises a main water inlet pipe, a buried vertical pipe and a turbulence generator, wherein the front end of the main water inlet pipe is installed together with the turbulence generator, and the rear end of the main water inlet pipe is connected with a group of buried vertical pipes which are connected in series, and the heat exchange pipeline is characterized in that: the turbulence generator is a plate type spiral turbulence generator which comprises a turbulence generator shell and two spoilers, and each spoiler is arranged on the inner surface of the turbulence generator shell through a ratchet mechanism and enables the spoilers to rotate relative to the turbulence generator shell;
the two spoilers are arranged in a relative crossing way and can adjust the crossing angle according to the required turbulent flow intensity;
a plurality of fin plates are arranged in the spoiler, and the fin plates are parallel to each other and form a certain angle relative to the axis of the flow channel.
2. The heat exchange pipeline for the ground source heat pump as claimed in claim 1, wherein: the two spoilers are arranged on the inner surface of the shell of the turbulence generator in an opposite and crossed mode.
3. The heat exchange pipeline for the ground source heat pump as claimed in claim 1, wherein: the fin plate is of a square or rectangular section structure.
4. The heat exchange pipeline for the ground source heat pump as claimed in claim 1, wherein: the distance between the centers of the fin plates is more than twice the width of the fin plates.
5. The heat exchange pipeline for the ground source heat pump as claimed in claim 1, wherein: the ratio of the thickness of the spoiler to the width of the fin plate is 1 to 3.
6. A heat exchange pipe for a ground source heat pump according to claim 1 or 2, characterized in that: the buried vertical pipes are connected end to end through U-shaped pipes.
7. A heat exchange pipe for a ground source heat pump according to claim 1 or 2, characterized in that: the outer wall of the underground vertical pipes is uniformly provided with four heat exchange ribs, and the heat exchange ribs between every two adjacent underground vertical pipes are connected into a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911052746.6A CN110895116B (en) | 2019-10-31 | 2019-10-31 | Heat exchange pipeline for ground source heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911052746.6A CN110895116B (en) | 2019-10-31 | 2019-10-31 | Heat exchange pipeline for ground source heat pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110895116A CN110895116A (en) | 2020-03-20 |
| CN110895116B true CN110895116B (en) | 2021-01-15 |
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ID=69787820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911052746.6A Active CN110895116B (en) | 2019-10-31 | 2019-10-31 | Heat exchange pipeline for ground source heat pump |
Country Status (1)
| Country | Link |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4865460A (en) * | 1988-05-02 | 1989-09-12 | Kama Corporation | Static mixing device |
| DE10326381B4 (en) * | 2003-06-12 | 2005-09-22 | Jähn, Peter | turbulence generator |
| CN206391897U (en) * | 2017-01-12 | 2017-08-11 | 山东瑞达有害生物防控有限公司 | A kind of homogeneous flow mixing device of pipeline |
| CN206549480U (en) * | 2017-01-25 | 2017-10-13 | 广州市八通混合器有限公司 | A kind of modified blender |
| CN207313385U (en) * | 2017-10-18 | 2018-05-04 | 成都玛雅环保工程有限公司 | A kind of solar energy Oligodynamic sewage treatment system |
| CN208212929U (en) * | 2018-03-13 | 2018-12-11 | 广州市八通混合器有限公司 | A kind of static mixer of anti-blockage structure |
| CN110280158A (en) * | 2019-08-08 | 2019-09-27 | 中国联合网络通信集团有限公司 | A kind of fluid dividing cover and static mixer |
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2019
- 2019-10-31 CN CN201911052746.6A patent/CN110895116B/en active Active
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