CN206235584U - A kind of experimental system for verifying energy stake Calculation of Heat Transfer model under the conditions of seepage action of ground water - Google Patents
A kind of experimental system for verifying energy stake Calculation of Heat Transfer model under the conditions of seepage action of ground water Download PDFInfo
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- CN206235584U CN206235584U CN201621144394.9U CN201621144394U CN206235584U CN 206235584 U CN206235584 U CN 206235584U CN 201621144394 U CN201621144394 U CN 201621144394U CN 206235584 U CN206235584 U CN 206235584U
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- seepage action
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Abstract
The utility model discloses a kind of experimental system for verifying energy stake Calculation of Heat Transfer model under the conditions of seepage action of ground water, pile foundation pipe laying including being embedded in underground, spiral heat exchanger is provided with the pile foundation pipe laying, the two ends of the helix tube of the spiral heat exchanger connect the water inlet and delivery port of constant-temperature water heating tank respectively, the pile foundation pipe laying surrounding soil is laid with some thermocouples, and thermometer and flowmeter are provided with the helix tube and the connecting line of constant-temperature water heating tank.The data collecting instrument can be by data record.The drilling pipe laying can provide basis to obtain groundwater velocity.The utility model replaces source pump using constant-temperature water heating tank, simulate the temperature-responsive of earth-source hot-pump system energy stake geothermal heat exchanger surrounding medium in heat exchange under the conditions of seepage action of ground water, no matter which kind of model proposed, the reasonability of any put forward energy stake heat transfer model under the conditions of seepage action of ground water can be identified by the manner.
Description
Technical field
The utility model is related to a kind of experimental system for verifying energy stake Calculation of Heat Transfer model under the conditions of seepage action of ground water.
Background technology
Earth-source hot-pump system makes full use of the energy of underground medium to freeze and heat building, with energy-conservation and ring
The advantage of guarantor, is a kind of renewable energy source air conditioning system.Geothermal heat exchanger is the master that earth source heat pump is different from other types heat pump
Indicate, at present frequently with drilling and bury the mode of U heat exchange.What is drilled is costly, and needs a certain amount of ground
Area is arranged to drilling, and these turn into the major defect of restriction ground-source heat pump development.In recent years, researcher started to consider
Spiral heat exchange tube is embedded in into the pile foundation of building to make a kind of geothermal heat exchanger of novelty, referred to as " energy stake underground heat is changed
Hot device ".The diameter of pile foundation is significantly larger than the diameter of drilling, and internal generally arrangement helix tube rather than U-tube, therefore every meter of energy piles
Exchange capability of heat to be significantly stronger than drilling pipe laying.The pile foundation limited amount of building, the geothermal heat exchanger of whole system can be by energy
Amount stake and drilling pipe laying are collectively constituted.
Because the depth of energy stake is even up to tens meters more than ten meters, the seepage flow generally existing of underground water is especially right
In the area that groundwater resources enrich, seepage effect is even more strong.The flowing of underground water, the heat exchange to energy stake generates convection current
Influence, therefore the heat exchange pattern between the stake of original energy and underground medium is changed into by pure heat conduction and is changed containing heat conduction and the compound of convection current
Heat.It is heat transfer of the research energy stake under the conditions of seepage action of ground water, related heat transfer model is constantly proposed and updated.But for
Whether model is accurate, not yet has experimental system to verify it at present.
Therefore, for the actual energy stake effect that heat transfer model is calculated under the conditions of seepage action of ground water how and model
It is whether reasonable, it is necessary to a kind of experimental system, being capable of conveniently checking energy stake Calculation of Heat Transfer model under the conditions of seepage action of ground water
Effect.
Utility model content
The utility model is in order to solve the above problems, it is proposed that one kind checking energy stake is conducted heat under the conditions of seepage action of ground water
The experimental system of computation model, the temperature that the utility model checking energy stake geothermal heat exchanger causes under the conditions of seepage action of ground water
The computation model of response.No matter which kind of model proposed, the reasonability of computational methods can be identified by the manner.
To achieve these goals, the utility model is adopted the following technical scheme that：
It is a kind of to verify the experimental system of energy stake Calculation of Heat Transfer model under the conditions of seepage action of ground water, including it is embedded in underground
Pile foundation pipe laying, spiral heat exchanger is provided with the pile foundation pipe laying, the two ends of the helix tube of the spiral heat exchanger connect respectively
The water inlet and delivery port of constant-temperature water heating tank are connect, the pile foundation pipe laying surrounding soil is laid with some thermocouples, the helix tube
With thermometer and flowmeter are provided with the connecting line of constant-temperature water heating tank.
Electric heater is provided with the constant-temperature water heating tank, for spiral heat exchanger provides circulating hot water.
Water pump is provided with the connecting line, current size is controlled.
The thermocouple is evenly arranged for multiple, and x, y and z axes direction along pile foundation pipe laying.
The thermocouple is connected with data collecting instrument.
Surveyed data are uploaded to processor by the data collecting instrument, the temperature-responsive value of the thermocouple by contrasting collection
With the energy stake temperature-responsive value that heat transfer model is obtained under the conditions of seepage action of ground water, the conjunction for carrying heat transfer model is verified and differentiated
Rationality.
The size adjusting of the caliber of the spiral heat exchange tube, spacing and helix length according to pile foundation pipe laying.
U-tube is buried in the drilling, the inside, as drilling buried tube heat exchanger, is compared under the conditions of seepage action of ground water using it
More ripe and generally acknowledged line source model, can obtain the flow velocity of underground water using reverse push logos.
The U-tube, is embedded in drilling.Drilling pipe laying geothermal heat exchanger is constituted together with drilling.
The beneficial effects of the utility model are：
(1) source pump is replaced using constant-temperature water heating tank, simulates earth-source hot-pump system energy under the conditions of seepage action of ground water
The temperature-responsive of stake geothermal heat exchanger surrounding medium in heat exchange, no matter which kind of model proposed, can identification calculating by the manner
The reasonability of method.
(2) simple structure, it is easy to assembly.
Brief description of the drawings
Fig. 1 is the experimental system schematic diagram of checking heat transfer model of the present utility model；
Fig. 2 is the schematic diagram that thermocouple is arranged around energy stake of the present utility model；
Fig. 3 is by of the present utility model to obtain the system schematic tested of seepage action of ground water speed；
Fig. 4 is the schematic diagram that thermocouple is arranged around drilling pipe laying of the present utility model；
Wherein：1 helix tube starting point h1, 2 seepage action of ground waters, 3 pile foundation pipe layings, 4 spiral heat exchange tubes, 5 underground mediums, 6 spirals
Pipe terminal h2, 7 thermocouples, 8 constant-temperature water heating tanks, 9 electric heaters, 10 flowmeters, 11 thermometers, 12 water pumps, 13U type pipes, 14 bore
Hole, backfilling material in 15 holes.
Specific embodiment：
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, replace source pump using constant-temperature water heating tank 8 in experiment, with simulating under the conditions of seepage action of ground water 2
The temperature-responsive of source heat pump system energy stake geothermal heat exchanger surrounding medium in heat exchange.Recirculated water enters in pile foundation after being heated
Spiral heat exchange tube 4 radiated, thermocouple is arranged in around pile foundation spiral pipe laying 3, the temperature-responsive that thermocouple 7 draws
Data will be recorded by data collecting instrument, by the temperature-responsive value tested with carry the temperature sound that heat transfer model is obtained
Should be worth and be compared, it may be verified that and differentiate the reasonability of any put forward heat transfer model.Thermocouple 7 is along x, the uniform cloth of y and z-axis direction
Put.
Thermometer 11 and flowmeter 10 are provided with helix tube and the connecting line of constant-temperature water heating tank.
The pile foundation 3 of any physical dimension can be chosen, while the geometry such as the caliber of spiral heat exchange tube 4, spacing, helix length
Parameter can also be continually changing and adjust, and can more embody the verification the verifying results of this experimental system.Medium around pile foundation 3 can be
Any kind of underground medium.
As Fig. 3 shows, to ensure the realization of this Experimental Verification System, it is necessary to backward reasoning calculating groundwater velocity method is drawn
Enter, using the pipe laying geothermal heat exchanger that drills, infer the size and Orientation of groundwater velocity.Here, first being obtained by experimental system
Temperature-responsive in the surrounding that must drill underground medium, using the line heat that drilling is ripe and generally acknowledged under the conditions of seepage action of ground water
Source flow model in porous media, backward reasoning calculates groundwater velocity this vector.Still with constant-temperature water heating tank heat cycles water, recirculated water
The U-shaped pipe laying 13 flowed through in drilling distributes heat.
As shown in figure 4, thermocouple 7 is evenly arranged 5 around drilling pipe laying on XOY faces, along the depth of drilling pipe laying
Direction is just evenly arranged 5 thermocouples 7 every several meters on corresponding cross section.Drilling pipe laying using comparative maturity exists
The line heat source flow model in porous media of caused temperature-responsive under the conditions of seepage action of ground water 2, with reference to the data that thermocouple 7 is measured, reversely
Reasoning and calculation obtains the size and Orientation of groundwater velocity, by size and Orientation substitution pile foundation pipe laying under the conditions of seepage action of ground water
In the heat transfer model of the temperature-responsive for causing, the value of temperature-responsive is calculated, the value measured with thermocouple 7 is compared, with this
Verify the reasonability of heat transfer model.
Backward reasoning calculating method, though the seepage flow size of i.e. underground water is unknown, according to local waterpower data, it is known that its
In certain limit, the scope of groundwater velocity size and Orientation is set first, it is continuous in the range of using line heat source flow model in porous media
Extracted data is iterated calculating, in certain period of time, the temperature-responsive value and line heat source seepage flow measured around drilling pipe laying
When the variance and minimum of the temperature-responsive value that model is calculated, the size and Orientation of groundwater velocity is now can obtain.
It is not new to this practicality although above-mentioned be described with reference to accompanying drawing to specific embodiment of the present utility model
The limitation of type protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, ability
Various modifications or deform still in protection model of the present utility model that field technique personnel make by need not paying creative work
Within enclosing.
Claims (7)
1. it is a kind of verify energy stake under the conditions of seepage action of ground water Calculation of Heat Transfer model experimental system, it is characterized in that：Including burying
The pile foundation pipe laying of underground is placed in, spiral heat exchanger, the two of the helix tube of the spiral heat exchanger are provided with the pile foundation pipe laying
End connects the water inlet and delivery port of constant-temperature water heating tank respectively, and the pile foundation pipe laying surrounding soil is laid with some thermocouples, institute
Thermometer and flowmeter are provided with the connecting line for stating helix tube and constant-temperature water heating tank.
2. a kind of experiment system for verifying energy stake Calculation of Heat Transfer model under the conditions of seepage action of ground water as claimed in claim 1
System, it is characterized in that：Electric heater is provided with the constant-temperature water heating tank, for spiral heat exchanger provides circulating hot water.
3. a kind of experiment system for verifying energy stake Calculation of Heat Transfer model under the conditions of seepage action of ground water as claimed in claim 1
System, it is characterized in that：Water pump is provided with the connecting line, current size is controlled.
4. a kind of experiment system for verifying energy stake Calculation of Heat Transfer model under the conditions of seepage action of ground water as claimed in claim 1
System, it is characterized in that：The thermocouple is evenly arranged for multiple, and x, y and z axes direction along pile foundation pipe laying.
5. a kind of experiment system for verifying energy stake Calculation of Heat Transfer model under the conditions of seepage action of ground water as claimed in claim 1
System, it is characterized in that：The thermocouple is connected with data collecting instrument, and measured data are uploaded to treatment by the data collecting instrument
Device, contrasts the temperature-responsive value that the temperature-responsive value of the thermocouple of collection is obtained with computational methods.
6. a kind of experiment system for verifying energy stake Calculation of Heat Transfer model under the conditions of seepage action of ground water as claimed in claim 1
System, it is characterized in that：The size adjusting of the caliber of the spiral heat exchange tube, spacing and helix length according to pile foundation pipe laying.
7. a kind of experiment system for verifying energy stake Calculation of Heat Transfer model under the conditions of seepage action of ground water as claimed in claim 1
System, it is characterized in that：The spiral heat exchange tube replaces with U-tube heat exchanger.
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| CN201621144394.9U CN206235584U (en) | 2016-10-21 | 2016-10-21 | A kind of experimental system for verifying energy stake Calculation of Heat Transfer model under the conditions of seepage action of ground water |
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| CN201621144394.9U CN206235584U (en) | 2016-10-21 | 2016-10-21 | A kind of experimental system for verifying energy stake Calculation of Heat Transfer model under the conditions of seepage action of ground water |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107247073A (en) * | 2017-08-18 | 2017-10-13 | 张家港市兴鸿达基础有限公司 | A kind of pile foundation imbedded pipe heat-exchanging system safety testing device |
| CN112179814A (en) * | 2020-09-18 | 2021-01-05 | 中国能源建设集团浙江省电力设计院有限公司 | Analytic model for measuring groundwater flow velocity by using pulse heating distributed optical fiber |
| CN112683562A (en) * | 2020-12-07 | 2021-04-20 | 扬州大学 | Energy pile heat-flow-force coupling characteristic experiment test system and test method |
| CN113029894A (en) * | 2021-01-20 | 2021-06-25 | 桂林理工大学 | Test bed for simulating three-dimensional heat seepage coupling transfer of soil body in karst area |
-
2016
- 2016-10-21 CN CN201621144394.9U patent/CN206235584U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107247073A (en) * | 2017-08-18 | 2017-10-13 | 张家港市兴鸿达基础有限公司 | A kind of pile foundation imbedded pipe heat-exchanging system safety testing device |
| CN112179814A (en) * | 2020-09-18 | 2021-01-05 | 中国能源建设集团浙江省电力设计院有限公司 | Analytic model for measuring groundwater flow velocity by using pulse heating distributed optical fiber |
| CN112179814B (en) * | 2020-09-18 | 2024-05-24 | 中国能源建设集团浙江省电力设计院有限公司 | Analytical model for measuring underground water flow velocity by utilizing pulse heating distributed optical fibers |
| CN112683562A (en) * | 2020-12-07 | 2021-04-20 | 扬州大学 | Energy pile heat-flow-force coupling characteristic experiment test system and test method |
| CN112683562B (en) * | 2020-12-07 | 2023-01-03 | 扬州大学 | Energy pile heat-flow-force coupling characteristic experiment test system and test method |
| CN113029894A (en) * | 2021-01-20 | 2021-06-25 | 桂林理工大学 | Test bed for simulating three-dimensional heat seepage coupling transfer of soil body in karst area |
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