CN108318524A - Ground heat exchanger scene thermophysical property measurement instrument calibration equipment Special temperature measurement stick - Google Patents
Ground heat exchanger scene thermophysical property measurement instrument calibration equipment Special temperature measurement stick Download PDFInfo
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- CN108318524A CN108318524A CN201810201293.8A CN201810201293A CN108318524A CN 108318524 A CN108318524 A CN 108318524A CN 201810201293 A CN201810201293 A CN 201810201293A CN 108318524 A CN108318524 A CN 108318524A
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- thermophysical property
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- 238000005259 measurement Methods 0.000 title claims abstract description 64
- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 44
- 238000004164 analytical calibration Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 81
- 244000035744 Hura crepitans Species 0.000 claims description 69
- 239000004576 sand Substances 0.000 claims description 17
- 239000007921 spray Substances 0.000 claims description 13
- 230000008676 import Effects 0.000 claims description 9
- 238000005266 casting Methods 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 description 15
- 230000000704 physical effect Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 238000011835 investigation Methods 0.000 description 6
- 238000013499 data model Methods 0.000 description 4
- 238000013178 mathematical model Methods 0.000 description 4
- 238000012795 verification Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000008236 heating water Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002937 thermal insulation foam Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Nonlinear Science (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The present invention discloses a kind of ground heat exchanger scene thermophysical property measurement instrument calibration equipment Special temperature measurement stick, it is related to technical field of ground source heat pump, including ontology, the ontology is tubular, described body side surface is equipped with multiple mounting holes, the mounting hole is equipped with temperature element, and the temperature element is leant out from mounting hole, and the distance between described mounting hole is sequentially increased from one end of ontology.The present invention is specific to ground heat exchanger scene thermophysical property measurement instrument calibration equipment and the tempilstick that makes, which, convenient for assembly, is easily installed in calibration equipment；With temperature measurement accuracy height, temperature measurement accuracy is less than 0.1 DEG C；Thermometric high resolution, thermometric resolution ratio are 0.01 DEG C；Accurate positioning, calibration equipment temperature-measuring range in 0~100 DEG C, measurement data can teletransmission to host computer etc. advantage.
Description
Technical field
The present invention relates to technical field of ground source heat pump, and in particular to ground heat exchanger scene thermophysical property measurement instrument verification dress
Set Special temperature measurement stick.
Background technology
Earth source heat pump is increasingly subject to the attention of people and pushes away in recent years as a green, the systems technology of energy-saving and environmental protection
Extensively.Underground ground thermal property parameter be earth source heat pump geothermal heat exchanger design in required critically important parameter, ground heat
The size of physical parameter has significant impact to the quantity of drilling and the depth of drilling, and then influences the first of ground-source heat pump system
Investment.
Due to the uncertainty and incomprehensiveness of ground thermal property, designer can only be in certain soil or rock heat conduction system
Lower value is used in number range, causes design system scale excessive.Therefore the scene of ground buried pipe of ground source heat pump heat exchanger is carried out
Geo-thermal response test, national standard " GB50366-2005 ground-source heat pump systems engineering legislation (version in 2009) " survey live thermal response
Specified in more detail is had a fling at.The live most important link of geo-thermal response test is exactly that the temperature of fluid is imported and exported according to the underground pipe of measurement
The parameters such as degree, flow, heat exchange amount, derivation calculates the thermal physical property parameters such as thermal coefficient, the thermal capacitance of underground Rock And Soil, to understand
The difference of underground Rock And Soil and the influence to ground-source heat pump system are grasped, could really accomplish that ground-source heat pump system design is closed
Reason, it is reliable for operation, economy is high.The instrument for executing live geo-thermal response test is known as live thermophysical property measurement instrument.
For example, application No. is 201710598336.6,201610932521.X, 201420868088.4,
201220678739.4、201210441003.X、201210207869.4、201220140459.8、201110223663.6、
201010556776.3、201010542651.5、201110028685.7、201310010514.0、201410635924.9、
201120152222.7 Chinese patent disclose the device and method tested for ground thermal property.
But there is no the calibration equipments about the hot physical property testing device in scene at present.
In this regard, inventor has developed live thermal property tester caliberating device and method, for existing to ground heat exchanger
Field thermophysical property measurement instrument is verified, and has declared patent, but also in inspection phase, which can be to existing
Calibration of the live thermophysical property measurement instrument into trip temperature, flow, heat, electric work amount etc..The calibration equipment include sandbox, U-shaped PE pipe,
Heating water tank, water circulating pump；The device need to measure drilling, sand in sandbox, U-shaped PE pipe outer walls thermo parameters method, so as to
It is calibrated in existing live thermophysical property measurement instrument.Wherein, sand needs to measure the temperature of multiple spot in boring surface and sandbox
Field distribution is spent, and needs higher positional accuracy, higher temperature accuracy and temperature resolution, positioning is inaccurate to join hot physical property
Several calculating has larger impact, calibration of the temperature measurement accuracy deficiency by influence to live thermophysical property measurement instrument measurement parameter, because of temperature
Variation is smaller, and thermometric resolution ratio not enough then leads to not differentiate small temperature change.
So being badly in need of developing at present, installation site accurate positioning, temperature measurement accuracy be high, underground pipe of thermometric high resolution changes
The Special temperature measurement device of hot device scene thermophysical property measurement instrument calibration equipment.
Invention content
In view of the above shortcomings of the prior art, the present invention provides a kind of installation site accurate positioning, temperature measurement accuracy height, surveys
The ground heat exchanger scene thermophysical property measurement instrument calibration equipment Special temperature measurement stick of warm high resolution.
Technical solution is as follows：
Ground heat exchanger scene thermophysical property measurement instrument calibration equipment Special temperature measurement stick, including ontology, the ontology are cylinder
Shape, described body side surface are equipped with multiple mounting holes, are equipped with temperature element on the mounting hole, and the temperature element is from mounting hole
It leans out, the distance between described mounting hole is sequentially increased from one end of ontology.
Wherein, the intensive one end of distance is equipped with clip between the ontology upper installing hole, and the ontology is equipped with clip
One end exceeds clip, and the end that the ontology is equipped with clip is equipped with temperature element.
Wherein, the temperature element lead on the temperature element is drawn from the fairlead on ontology.
Wherein, casting glue is filled in the ontology.The casting glue is preferably epoxy resin, and the casting glue can be prevented
Damp joint filling improves the intensity and toughness of ontology, and fixed temperature element lead.
The calibration equipment of ground heat exchanger scene thermophysical property measurement instrument calibration equipment Special temperature measurement stick, including sand are installed
The buried tubing loop of case, the buried tubing loop of sandbox includes sandbox, and uniform sand, the hot object of the sand are filled up in the sandbox
Property parameter it is known that horizontal in the sandbox be equipped with concrete column, the concrete column is used for simulating drilling, the thermal physical property parameter of concrete column
It is known that being equipped with underground pipe in the concrete column, in the vertical direction of the cement mast axis, the sandbox is equipped with multiple disconnected
Face is uniformly provided with multiple Special temperature measurement sticks, the Special temperature measurement on the sandbox section around the concrete column periphery
Stick is connect by temperature element lead with data acquisition device, and the ontology of the Special temperature measurement stick is fixed to concrete column by clip
On, heat insulating mattress is equipped between the clip and concrete column.The heat insulating mattress is used for preventing the heat exchange between clip and concrete column,
Prevent heat loss from causing temperature measurement error, thermometric more accurate.
Wherein, the concrete column is cylinder, and the clip is semi-circular, and the diameter of the clip is less than the straight of concrete column
Diameter.
Wherein, further include exterior line, the exterior line include the first temperature sensor, flowmeter, the first triple valve,
Water circulating pump, water tank, the second triple valve, second temperature sensor, wherein the outlet of the water circulating pump and the import of water tank connect
It connects, the import of the second triple valve of outlet and underground pipe of the water tank connects, the first triple valve of outlet of the underground pipe
It is connect with the entrance of the water circulating pump, first temperature sensor and flowmeter are set on the outlet and first of the underground pipe
Between triple valve, the second temperature sensor is set between second triple valve and the import of underground pipe, first temperature
Degree sensor, flowmeter and second temperature sensor are connect with data acquisition device, and the third of first triple valve connects
The third interface of mouth and the second triple valve is connected to thermophysical property measurement instrument inlet and outlet to be verified respectively, in the water tank
Equipped with heater, water supply tank is equipped between the water circulating pump and water tank.
Wherein, the sandbox open top, is equipped with spray equipment above the sandbox, and the sandbox bottom is towards water tank one
It rolls tiltedly, the sandbox is equipped with discharge outlet towards the lower section of one side of water tank, and the water tank is externally provided with gutter, the spray equipment
For drainpipe, spray apertures are beaten on the drainpipe, the drainpipe is connected with the water pipe in earth's surface.
Preferably, the temperature element is thermistor, and the quantity of thermistor is set as nine, on the body close to card
One end of hoop, the distance between first four thermistor is identical, the distance between the 5th and the 6th thermistor, Yi Ji
Five are identical as the distance between the 4th thermistor, and are 1.5 times of distance between first four thermistor, the seven, the eight,
The distance between nine and the 7th thermistors are identical as the distance between the 6th thermistor, and are first four temperature-sensitives
2 times of distance between resistance.In this way, can adapt to the distribution in temperature field in calibration equipment.Temperature in the calibration equipment
The distribution of degree field is gradually reduced from inside to outside, and temperature gradient is smaller and smaller from inside to outside.
Further preferably, the thermistor is armouring thermistor.Armouring thermistor has accurate, sensitive, thermal response
Time is fast, stable quality, advantage with long service life.
Preferably, the clip is semi-circular, and the diameter of clip is less than the diameter of concrete column, and the both ends of clip are along radius
Direction is outward extended with along plate, described to be equipped with threaded hole along plate.It designs in this way, when tempilstick is fixed on concrete column by clip
When upper, since clip diameter is less than cement column diameter, when screw tightening on clip threaded hole, clip will be made to deform upon,
Make tightly withstand on concrete column on tempilstick.
The user of the calibration equipment of ground heat exchanger scene thermophysical property measurement instrument calibration equipment Special temperature measurement stick is installed
Method includes the following steps：
(1) switch for controlling first triple valve and the second triple valve, makes to be connected between the water tank and sandbox, be used for
It is respectively communicated with third interface and the second threeway of the first triple valve of the thermophysical property measurement instrument inlet and outlet to be verified
The third interface of valve is closed；
(2) water circulating pump is opened, the water flowing in the sandbox and water tank and connecting line is driven, opens the water
Heater in case utilizes data acquisition device acquisition Special temperature measurement stick, first for being heated to the water in water tank
The temperature and data on flows that temperature sensor, flowmeter, second temperature sensor measure are used as with reference to test data；
(3) the reference test data and mathematical model that will be acquired in step (2), estimates sand and/or water in the sandbox
The thermal physical property parameter of mud column；
(4) switch of first triple valve and the second triple valve is controlled, and closes the water circulating pump, makes described to wait for school
It is connected between the thermophysical property measurement instrument tested and sandbox, makes to close between the water tank and sandbox；
(5) start the thermophysical property measurement instrument to be verified, keep the water inside the thermophysical property measurement instrument to be verified logical
The U-shaped underground pipe of list crossed in sandbox circulates, and utilizes the temperature inside the thermophysical property measurement instrument to be verified, flow instrument
Temperature, data on flows are measured and recorded as actual test data；
(6) actual test data and mathematical model measured according to step (5) estimates sand and/or water in the sandbox
The thermal physical property parameter of mud column；
(7) step (6) is compared with the thermal physical property parameter that step (3) is calculated, to verify hot object to be verified
The temperature of the inside of property measuring instrument, flow instrument.
Described step (1)-(3) are for debugging the calibration equipment, when the calibration equipment normal operation
When, it can just carry out subsequent step；The step (4) is used for the thermophysical property measurement instrument to be verified in the calibration equipment
Field investigation is carried out, in the field investigation, water in sandbox after flowing out, by the first temperature sensor, flowmeter, first
Triple valve enters in thermophysical property measurement instrument to be verified, and then water flows through the second triple valve, second temperature sensor returns to sand
In case, whether the thermophysical property measurement instrument to be verified works normally during checking the field investigation, when described to be verified
Thermophysical property measurement instrument normal work when, can just carry out subsequent step.
Wherein, in the step (2), before opening the water circulating pump, spray equipment is opened, for simulating seepage flow
Straightened up in place under scene.
Beneficial effects of the present invention：
1, the special temperature measurement tube of thermophysical property measurement instrument calibration equipment in ground heat exchanger scene proposed by the present invention is
The tempilstick made specifically for ground heat exchanger scene thermophysical property measurement instrument calibration equipment, the tempilstick is in calibration equipment
In convenient for assembly, be easily installed；Multiple mounting holes and temperature element are set, have temperature measurement accuracy high, temperature measurement accuracy is less than 0.1
℃；Thermometric high resolution, thermometric resolution ratio are 0.01 DEG C；For calibration equipment temperature-measuring range in 0~100 DEG C, measurement data can be remote
The advantages of reaching host computer, setting clip can facilitate tempilstick to be in contact with concrete column, accurate positioning, the setting energy of mounting hole
Enough more applicable thermo parameters methods with sandbox, high certainty of measurement.
2, the calibration equipment of ground heat exchanger scene thermophysical property measurement instrument calibration equipment Special temperature measurement stick is installed, water is made
Case and thermophysical property measurement instrument to be verified are connected in parallel sandbox, can obtain reference test data and actual test for verification
Data, according to the thermal physical property parameter calculated separately with reference to test data and actual test data, to hot object to be verified
Property measuring instrument is verified, and ensure that the measurement accuracy of thermophysical property measurement instrument to be verified.
Description of the drawings
Fig. 1 is the structural schematic diagram of ground heat exchanger scene thermophysical property measurement instrument calibration equipment Special temperature measurement stick；
Fig. 2 is the sectional view of A-A in Fig. 1；
Fig. 3 is equipped with the verification of buried tube heat exchanger scene thermophysical property measurement instrument calibration equipment Special temperature measurement stick as shown in Figure 1
The system diagram of device；
Fig. 4 is the sandbox sectional schematic diagram of Fig. 3.
Reference numeral：1- sandboxs, 2- sands, 3- underground pipes, 4- heat insulating mattress, 5- concrete columns, the first temperature sensors of 6-, 7-
Thermophysical property measurement instrument to be verified, 8- water circulating pumps, 9- water tanks, 10- water supply tanks, the second triple valves of 11-, 12- flowmeters, 13-
Second temperature sensor, 14- data acquisition devices, 15- spray equipments, the first triple valves of 16-, 301- ontologies, 302- mounting holes,
303- fairleads, 304- temperature elements, 305- temperature element leads, 306- clips, 307- are filled along plate, 308- threaded holes, 309-
Sealing.
Specific implementation mode
The present invention will be further elaborated with reference to the accompanying drawings and examples.
Embodiment：
As shown in Figure 1 and Figure 2, ground heat exchanger scene thermophysical property measurement instrument calibration equipment Special temperature measurement stick, including ontology
301, the ontology 301 is tubular, and 301 side of the ontology is equipped with multiple mounting holes 302, is equipped on the mounting hole 302
Temperature element 304, the temperature element 304 are leant out from mounting hole 302, and the distance between described mounting hole 302 is from ontology 301
One end is sequentially increased.
The intensive one end of distance is equipped with clip 306 between 301 upper installing hole 302 of the ontology, and the clip 306 is used for will
Ontology 301 is fixed on concrete column 5.One end that the ontology 301 is equipped with clip 306 exceeds clip 306, the ontology 301
The end for being equipped with clip 306 is equipped with temperature element 304.
Preferably, the temperature element 304 is thermistor, and the quantity of thermistor is set as nine, is leaned on ontology 301
One end of nearly clip 306, the distance between first four thermistor is identical, between the 5th and the 6th thermistor away from
From and the 5th it is identical as the distance between the 4th thermistor, and be 1.5 of distance between first four thermistor
Times, the seven, the eight, the distance between nine and the 7th thermistors are identical as the distance between the 6th thermistor, and are
2 times of distance between first four thermistor.In this way, can adapt to the distribution in temperature field in calibration equipment.Calibration equipment
The distribution in interior temperature field is gradually reduced from inside to outside, and temperature gradient is smaller and smaller from inside to outside.Alternatively, according to temperature
The distance between distribution arrangement mounting hole 302 of field.
Further preferably, the thermistor is armouring thermistor.Armouring thermistor has accurate, sensitive, thermal response
Time is fast, stable quality, advantage with long service life.
Specifically, the ontology 301 is cylinder, the length of ontology 301 is 1200mm, and the diameter of section of ontology 301 is
15mm, the wall thickness 0.5mm of ontology, the mounting hole 302 are equipped with nine, and are located along the same line, mounting hole 302 it is a diameter of
5mm, is respectively mounted temperature element 304, nine armouring thermistors from top to bottom mutual distance be respectively 100mm, 100mm,
100mm、150mm、150mm、200mm、200mm、200mm。
There are non-linear relations between the resistance value and temperature of thermistor, in order to obtain accurate measurement data, need
Thermistor is corrected using Fluke2638A.
Wherein, the temperature element lead 305 on the temperature element 304 is drawn from the fairlead 303 on ontology 301.
Specifically, the temperature element lead 305 is seven strands of two core, 0.16mm string diameters, 3.4mm outer diameters copper core, temperature element draws
Line 305 does water-proofing treatment with teflon material, and the fairlead 303 is set to the ontology back side centre position for having mounting hole 302, and
If there are one, all temperature element leads 305 are drawn from fairlead 302, and hot melt rubber stick is used in combination to fix.
Wherein, casting glue 309 is filled in the ontology 301.Entire ontology 301 is made of PVC plastic, because of PVC
Plastics thermal coefficient is low, small to temperature profile effect in sandbox 1；The casting glue 309 selects epoxy resin, moisture-proof can fill out
Seam improves the intensity and toughness of ontology 309, and fixed temperature element lead 304.
Wherein, the ontology 301 is equipped with one end of clip 306 beyond clip 306.Specifically, ontology 301 exceeds clip
306 length is 5mm, in this way, can be after ontology 301 is installed on concrete column 5, near the thermometric member of clip 306
Part 304 can come into full contact with concrete column 5, reach pinpoint effect.
As shown in Figure 3, Figure 4, the special survey of buried tube heat exchanger scene thermophysical property measurement instrument calibration equipment as shown in Figure 1 is installed
The calibration equipment of warm stick, including the buried tubing loop of sandbox, the buried tubing loop of sandbox includes sandbox 1, is filled up in the sandbox 1
Uniform sand 2 known to thermal physical property parameter, the uniform sand filled up in sandbox 1 is for alternatively descending ground, water in the sandbox 1
Flat to be equipped with concrete column, the concrete column 5 is used for simulating drilling, and the thermal physical property parameter of concrete column 5 in the concrete column 5 it is known that set
It is single U-shaped underground pipe to have underground pipe 3, the underground pipe 3, and in the vertical direction of 5 axis of concrete column, the sandbox 1 is equipped with
Multiple sections are uniformly provided with multiple Special temperature measurement sticks on 1 section of the sandbox around 5 periphery of the concrete column, described
Special temperature measurement stick is connect by temperature element lead 305 with data acquisition device 14, and the ontology 301 of the Special temperature measurement stick passes through
Clip 306 is fixed on concrete column 5, and heat insulating mattress 4 is equipped between the clip 306 and concrete column 5.The heat insulating mattress 4 is used for preventing
The only heat exchange between clip 306 and concrete column 5 prevents heat loss from causing temperature measurement error, thermometric more accurate.The special survey
The thermo parameters method of sand 2 in 5 surface of warm stick detection concrete column, sandbox 1.
Wherein, the concrete column 5 is cylinder, and the clip 306 is semi-circular, and the diameter of the clip 306 is less than water
The diameter of mud column 5.
Specifically, the sandbox 1 is the cuboid of 2.55 × 2.55 × 21m, structure is armored concrete, and thickness is
250mm, concrete column 5 are set to 1 center of sandbox, and a diameter of 15cm.1 section of the sandbox is equipped with seven, ring on each section
It is uniformly arranged there are four Special temperature measurement stick around 5 periphery of concrete column, i.e., the axis angle between each Special temperature measurement stick is 90 °.It is husky
There are drawing and pulling type maintenance doors for 1 side of case, facilitate the back-up sand in later stage and the maintenance toward effluent sand and temperature element, around avoiding
Influence of the environment to sandbox 1,1 external wall of sandbox need to do isothermal holding, and 1 exterior wall of sandbox utilizes insulation foam plate and cement mortar system
At.
Specifically, the both ends of the clip 306 are outward extended with along radial direction along plate 307, it is described to be set along plate 307
There is threaded hole 308.It designs in this way, when ontology 301 is fixed on by clip 306 on concrete column 5, since 306 diameter of clip is small
When screw tightening on 5 diameter of concrete column, 306 threaded hole 308 of clip, clip 306 will be made to deform upon, make ontology 306
It can tightly withstand on concrete column 5.
Specifically, 306 peripheral radius of semi-circular clip is 75mm, thickness 0.5mm is described along plate 307 and clip
306 are welded to connect or unitary design, a diameter of 15mm of the threaded hole 08, and the threaded hole 308 is for pacifying ontology
On concrete column 5, the clip 306 and the making material along plate 307 select metal material.
Wherein, further include exterior line, the exterior line includes the first temperature sensor 6, flowmeter 12, the first threeway
Valve 16, water circulating pump 8, water tank 9, the second triple valve 11, second temperature sensor 13, wherein the outlet of the water circulating pump 8 with
The import of water tank 9 connects, and the second triple valve of outlet 11 of the water tank 9 is connect with the import of underground pipe 3, the underground pipe 3
The first triple valve of outlet 16 connect with the entrance of the water circulating pump 8, first temperature sensor 6 and flowmeter 12 are set
Between the outlet of the underground pipe 3 and the first triple valve 16, the second temperature sensor 13 is set to second triple valve
Between 11 and the import of underground pipe 3, first temperature sensor 6, flowmeter 12 and second temperature sensor 13 are and data
Harvester 14 connects, the third interface of the third interface of first triple valve 16 and the second triple valve 11 respectively with wait for
7 inlet and outlet of thermophysical property measurement instrument of verification is connected to, and heater is equipped in the water tank 9, for the water in heating water tank.
Water supply tank 10 is equipped between the water circulating pump 8 and water tank 9, when for making up calibration equipment operation, water is in pipeline junction etc.
The loss in place.
Optionally, it is corrected to be realized to the thermophysical property measurement instrument 7 to be verified under seepage flow scene, 1 top of the sandbox
Opening is equipped with dismountable thermal baffle, and 1 top of the sandbox is equipped with spray equipment 15, and the spray equipment 15 is drainpipe,
Spray apertures are beaten on the drainpipe, the drainpipe is connected with the water pipe in earth's surface, and 1 bottom of the sandbox is towards water tank 9 one
It rolls tiltedly, the lower section of the sandbox 1 towards 9 side of water tank is equipped with discharge outlet, described for have draining when Seepage Experiment
Water tank 9 is externally provided with gutter.
Specifically, drainpipe setting places 1m~1.5m above sandbox, the spray equipment 12 are used to simulate underground
Seepage flow.After 1 bottom of the sandbox is tilted towards 9 side of water tank, the angle of plane and horizontal plane where 1 bottom of sandbox is
0.005°。
In use, being equipped with buried tube heat exchanger scene thermophysical property measurement instrument calibration equipment Special temperature measurement stick as shown in Figure 1
The application method of calibration equipment, includes the following steps：
(1) switch for controlling 16 and second triple valve 11 of the first triple valve, makes to connect between the water tank 9 and sandbox 1
It is logical, the third interface of the first triple valve 16 for being respectively communicated with 7 inlet and outlet of thermophysical property measurement instrument to be calibrated
It is closed with the third interface of the second triple valve 11；
(2) water circulating pump 8 is opened, the water flowing in the sandbox 1 and water tank 9 and connecting line is driven, opens institute
The heater in water tank 9 is stated, for being heated to the water in water tank 9, special survey is acquired using the data acquisition device 14
The temperature and data on flows that warm stick, the first temperature sensor 6, flowmeter 12, second temperature sensor 13 measure are used as with reference to survey
Try data；
(3) the reference test data and mathematical model that will be acquired in step (2), estimate in the sandbox 1 sand 2 and/or
The thermal physical property parameter of concrete column 5；
(4) switch of 16 and second triple valve 11 of the first triple valve is controlled, and closes the water circulating pump 8, makes institute
It states and is connected between thermophysical property measurement instrument 7 to be verified and sandbox 1, make to close between the water tank 9 and sandbox 1；
(5) start the thermophysical property measurement instrument 7 to be verified, make the water inside the thermophysical property measurement instrument 7 to be verified
It is circulated by the U-shaped underground pipe of list in sandbox 1, utilizes the temperature inside the thermophysical property measurement instrument 7 to be verified, flow
Instrument measurement simultaneously records temperature, data on flows as actual test data；
(6) actual test data and mathematical model measured according to step (5), estimate in the sandbox 1 sand 2 and/or
The thermal physical property parameter of concrete column 5；
(7) step (6) is compared with the thermal physical property parameter that step (3) is calculated, to correct hot object to be calibrated
The temperature of the inside of property measuring instrument 7, flow instrument.
Described step (1)-(3) are for debugging the calibration equipment, when the calibration equipment normal operation
When, it can just carry out subsequent step；The step (4) is used for the thermophysical property measurement instrument 7 to be verified in the calibration equipment
Upper carry out field investigation, in the field investigation, water in sandbox 1 after flowing out, by the first temperature sensor 6, flowmeter
12, the first triple valve 16 enters in thermophysical property measurement instrument 7 to be verified, and then water flows through the second triple valve 11, second temperature
Sensor 13 returns in sandbox, checks the whether normal work of thermophysical property measurement instrument 7 to be verified during the field investigation
Make, when the thermophysical property measurement instrument 7 to be verified works normally, can just carry out subsequent step.
When simulating the straightened up in place under seepage flow scene, in the step (2), before opening the water circulating pump 8, open
Open spray equipment 15.
Claims (8)
1. ground heat exchanger scene thermophysical property measurement instrument calibration equipment Special temperature measurement stick, which is characterized in that described including ontology
Ontology is tubular, and described body side surface is equipped with multiple mounting holes, and temperature element, the temperature element are equipped on the mounting hole
It is leant out from mounting hole, the distance between described mounting hole is sequentially increased from one end of ontology.
2. ground heat exchanger scene thermophysical property measurement instrument calibration equipment Special temperature measurement stick according to claim 1, special
Sign is that the intensive one end of distance is equipped with clip between the ontology upper installing hole, and one end that the ontology is equipped with clip is super
Go out clip, the end that the ontology is equipped with clip is equipped with temperature element.
3. ground heat exchanger scene thermophysical property measurement instrument calibration equipment Special temperature measurement stick according to claim 1, special
Sign is that the temperature element lead on the temperature element is drawn from the fairlead on ontology.
4. ground heat exchanger scene thermophysical property measurement instrument calibration equipment Special temperature measurement stick according to claim 1, special
Sign is, casting glue is filled in the ontology.
5. being equipped with the ground heat exchanger scene thermophysical property measurement instrument calibration equipment Special temperature measurement according to claim 1-4
The calibration equipment of stick, including the buried tubing loop of sandbox, the buried tubing loop of sandbox includes sandbox, is filled up in the sandbox uniformly
Sand, fills up uniform sand in the sandbox, horizontal in the sandbox to be equipped with concrete column, for simulating drilling, the concrete column
In be equipped with underground pipe, which is characterized in that in the vertical direction of the cement mast axis, the sandbox be equipped with multiple sections,
Multiple Special temperature measurement sticks are uniformly provided with around the concrete column periphery on the sandbox section, the Special temperature measurement stick is logical
Temperature element lead to be crossed to connect with data acquisition device, the ontology of the Special temperature measurement stick is fixed to by clip on concrete column,
Heat insulating mattress is equipped between the clip and concrete column.
6. installation ground heat exchanger scene according to claim 5 thermophysical property measurement instrument calibration equipment Special temperature measurement stick
Calibration equipment, which is characterized in that the concrete column is cylinder, and the clip is semi-circular, and the diameter of the clip is less than water
The diameter of mud column.
7. installation ground heat exchanger scene according to claim 5 thermophysical property measurement instrument calibration equipment Special temperature measurement stick
Calibration equipment, which is characterized in that further include exterior line, the exterior line includes the first temperature sensor, flowmeter, first
Triple valve, water circulating pump, water tank, the second triple valve, second temperature sensor, wherein the outlet of the water circulating pump and water tank
Import connection, the import of the second triple valve of outlet of the water tank and underground pipe connects, the outlet of the underground pipe the
One triple valve is connect with the entrance of the water circulating pump, and first temperature sensor and flowmeter are set to going out for the underground pipe
Between mouth and the first triple valve, the second temperature sensor is set between second triple valve and the import of underground pipe, institute
The first temperature sensor, flowmeter and second temperature sensor is stated to connect with data acquisition device, first triple valve
The third interface of third interface and the second triple valve is connected to thermophysical property measurement instrument inlet and outlet to be verified respectively, institute
It states and is equipped with heater in water tank, water supply tank is equipped between the water circulating pump and water tank.
8. installation ground heat exchanger scene according to claim 7 thermophysical property measurement instrument calibration equipment Special temperature measurement stick
Calibration equipment, which is characterized in that the sandbox open top, the sandbox top are equipped with spray equipment, the sandbox bottom court
It is tilted to one side of water tank, the sandbox is equipped with discharge outlet towards the lower section of one side of water tank, and the water tank is externally provided with gutter, described
Spray equipment is drainpipe, and spray apertures are beaten on the drainpipe, and the drainpipe is connected with the water pipe in earth's surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810201293.8A CN108318524B (en) | 2018-03-12 | 2018-03-12 | Special temperature measuring rod for field thermophysical property measuring instrument calibration device of buried pipe heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810201293.8A CN108318524B (en) | 2018-03-12 | 2018-03-12 | Special temperature measuring rod for field thermophysical property measuring instrument calibration device of buried pipe heat exchanger |
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| Publication Number | Publication Date |
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| CN108318524A true CN108318524A (en) | 2018-07-24 |
| CN108318524B CN108318524B (en) | 2024-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810201293.8A Active CN108318524B (en) | 2018-03-12 | 2018-03-12 | Special temperature measuring rod for field thermophysical property measuring instrument calibration device of buried pipe heat exchanger |
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| CN109974872A (en) * | 2019-04-04 | 2019-07-05 | 珠海格力电器股份有限公司 | Detection tool for improving temperature detection precision |
| CN110243858A (en) * | 2019-06-10 | 2019-09-17 | 佛山科学技术学院 | A kind of plant fluid flow test device and its detection method |
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| CN108318524B (en) | 2024-06-14 |
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Address after: No. 1 Weizishan Road, Tangyexin District, Licheng District, Jinan City, Shandong Province, 250104 Patentee after: Shandong Geological Exploration Geothermal New Energy Group Co.,Ltd. Country or region after: China Patentee after: The Second Exploration Team of Shandong Coalfield Geology Bureau Address before: No. 1 Weizishan Road, Tangyexin District, Licheng District, Jinan City, Shandong Province, 250104 Patentee before: SHANDONG YATEER GROUP Co.,Ltd. Country or region before: China Patentee before: The Second Exploration Team of Shandong Coalfield Geology Bureau |