CN201885985U - Tester for in-situ formation thermal property and ground pipe transferred heat of ground source heat pump - Google Patents
Tester for in-situ formation thermal property and ground pipe transferred heat of ground source heat pump Download PDFInfo
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- CN201885985U CN201885985U CN2010206051235U CN201020605123U CN201885985U CN 201885985 U CN201885985 U CN 201885985U CN 2010206051235 U CN2010206051235 U CN 2010206051235U CN 201020605123 U CN201020605123 U CN 201020605123U CN 201885985 U CN201885985 U CN 201885985U
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Abstract
The utility model discloses a tester for in-situ formation thermal property and ground pipe transferred heat of a ground source heat pump, which comprises a pipeline circulation system, a test system and a monitoring system. The pipeline circulation system is a loop formed by connecting a flow sensor, a circulation water pump, an electric heater, an expansion tank, an exhaust valve, a three-way valve and a compensation valve to a U-shaped ground pipe through connectors, and the test system consists of a flow sensor, a temperature sensor, a pressure sensor and a power sensor, while the flow sensor, the temperature sensor, the pressure sensor and the power sensor are respectively connected with the monitoring system. The tester is compact in structure and convenient to carry, and two test modes of formation thermal property test and exchanged heat test can be realized by one tester, so that the tester achieves two purposes and is economical and convenient. Two circulation pumps are used alternately, so that service lives of the circulation pumps are prolonged, testing and adjustment are more convenient, and test data is accurate.
Description
Technical field
The utility model belongs to the technical field of measurement and test of Heating,Ventilating and Air Conditioning (HVAC) new technology ground buried pipe of ground source heat pump system, particularly the tester of the hot rerum natura of original position on stratum and ground pipe laying heat around the ground heat exchanger.
Background technology
Along with ground source heat pump technology the applying of China, a large amount of earth source heat pump engineerings have success that failure is arranged, tracing it to its cause mainly is that bigger deviation has appearred in the design link of earth source heat pump.The design of earth source heat pump at present mainly is to rely on foreign experience, and does not have reasonably to design according to geologic condition, hydrologic condition and the ground temperature distribution occasion of domestic reality.The hot physical property measurement in breadboard stratum inevasible original position characteristic of having destroyed the stratum in a series of processes such as sampling, transportation, test, can not reflect the boring comprehensive thermal physical property parameter on stratum on every side truly, thereby " earth-source hot-pump system engineering legislation " (version in 2009) of in November, 2005 issue stipulated that the application floor area of building of local pipe laying earth-source hot-pump system is at 5000m
2More than, or implemented the project that the stratum thermal response is tested, should utilize thermal response test findings in stratum to carry out the design of ground heat exchanger.
At present domestic have many R﹠D institutions or school to develop stratum thermal response tester, but existing equipment exists following deficiency: can not simulate two kinds of patterns of heat and thermal conductivity test simultaneously; Because disposed water tank, greatly increased the volume of system, transportation inconvenience; System's operation does not also realize robotization fully.
Summary of the invention
The purpose of this utility model is the weak point at the on-the-spot thermal response proving installation of existing earth source heat pump, a kind of hot rerum natura of stratum original position and ground pipe laying heat tester of earth source heat pump are provided, and this tester has compact conformation, easy to operate, characteristics such as cost is low, measurement is accurate.
For achieving the above object, the utility model has adopted following technical scheme: a kind of hot rerum natura of stratum original position of earth source heat pump and ground pipe laying heat tester is characterized in that this device comprises the pipeline circulation system, test macro and supervisory system.
Wherein the pipeline circulation system is by flow sensor 1, water circulating pump 2, electric heater 3, expansion drum 4, vent valve 7, special fit 14, U type ground pipe laying 15, T-valve 8 and water compensating valve 9 constitute, flow sensor 1 one sides are connected with tester inlet A end by pipeline, be connected to T-valve 8 on this segment pipe, tester water supplement port C terminates on T-valve 8 lower channel, on tester water supplement port C end pipeline, be connected to water compensating valve 9, the opposite side of flow sensor 1 joins by pipeline and water circulating pump 2, water circulating pump 2 tops are connected with electric heater 3 bottoms by pipeline, electric heater 3 tops link to each other with expansion drum 4 by pipeline, one side of electric heater 3 is connected with tester outlet B end by pipeline, be connected to vent valve 7 on this place's pipeline, tester inlet A end is connected with the outlet of U type ground pipe laying 15 by special fit 14, and tester outlet B end is connected with the inlet of U type ground pipe laying 15 by special fit 14;
Test macro is made of flow sensor 1, temperature sensor 5, pressure transducer 6, power sensor 13, flow sensor 1 one terminates on the tester inlet A end pipeline, the other end links to each other with supervisory system 12, on the pipeline that flow sensor 1 and tester inlet A end is connected and on electric heater 3 and the pipeline that tester outlet B end is connected T is being installed respectively
1And T
2Temperature sensor 5 and P
1And P
2Pressure transducer 6 is arranged T respectively at tester box house and outside
3And T
4Temperature sensor 5, described T
1, T
2, T
3, T
4Temperature sensor 5, P
1And P
2The other end of pressure transducer 6 links to each other with supervisory system 12, and power sensor 13 1 ends link to each other with electric heater 3, and the other end links to each other with supervisory system 12;
Supervisory system 12 is made up of instrument system and operation control system, wherein analog measurement module one end of instrument system is connected with flow sensor 1, temperature sensor 5, pressure transducer 6, power sensor 13, the other end is connected with A/D converting analogue load module, PLC one end is connected with A/D converting analogue load module, the other end is connected with man-machine interface, switching value output by the I/O of system mouth, man-machine interface is connected with USB flash disk memory storage, PC, provides supporting power supply and fan for system in addition; Consisting of of operation control system: the 220V AC power, this power supply is connected with meter switch, instrument power by the phase sequence relay; Motor servo driver 11 is in parallel with instrument power simultaneously; Change the rotating speed of water pump by the knob aperture on the adjusting motor servo driver 11,380V AC power 10 is connected with electric heater 3 by phase sequence relay, contactless contactor simultaneously, electric heater 3 links to each other with power sensor 13 input ends, more than all power supplys all come from power supply 10;
Above-mentioned flow sensor 1 is the LWGY-25 turbine flow transducer, in order to produce and the corresponding pulse signal of flow value; Temperature sensor 5 is PT100, in order to produce and the corresponding normalized current signal of temperature value; Pressure transducer 6 is a HM20-1 type pressure unit, in order to produce and the force value corresponding voltage signal; The model of power sensor is PK-6013, in order to produce and the performance number corresponding voltage signal; The specified heating power of electric heater 3 is 12KW, guarantees enough heating powers, realizes control to electric heater 3 heating powers by the control heating power; Water circulating pump 2 has been carried out the servomotor transformation, and intelligent speed-regulating instrument model is XMT-30001D, is used for realizing the step-less adjustment to pump rotary speed, thereby realizes the step-less adjustment to circulating fluid flow rate; Two water circulating pump models are PWN-162, can use in turn according to the time of setting, and overheated influence to test when having alleviated continuous operation has also prolonged serviceable life of water circulating pump.
What the connecting tube in the tester, joint, elbow and threeway were adopted is the stainless-steel tube of DN32, expansion drum 4 arc weldings are in the upper end of electric heater, pressure transducer 6 arc weldings are in a side of electric heater 3, the pipe section arc welding that connects water circulating pump 2 and electric heater 3 is in electric heater 3 lower ends, the connection of tester pipeline circulation system miscellaneous part in circulation line all is to be threaded by connecting tube, joint, elbow or threeway, and two water circulating pumps 2 are connected in parallel in the pipeline circulation system.
Above-mentioned U type ground pipe laying 15 is that test site is buried in advance, is full of water in the pipe laying and port sealed, and the backfill of holing, this part does not belong to the device scope of this tester.
The special fit 14 that above-mentioned connection tester is imported and exported two ends and pipe laying 15 two ends, U type ground is to be formed by the 90 degree elbows of two DN32 and the direct current threeway arc welding of a DN32, what connect is double-U-shaped U type ground pipe laying 15, being connected of special fit 14 and tester part is to be threaded, an end that connects U type ground pipe laying need and an end to have the joint that the internal thread other end can be connected with U type ground pipe laying hot melt continuous; If the ground pipe laying of single U type does not just need special fit 14, only need the above-mentioned joint that has internal thread tester can be connected with U type ground pipe laying 15, because of ground pipe laying commonly used is the HDPE pipe of DN25 or DN32, so joint commonly used is the tapped PE joint of DN25 or DN32, when the caliber of the caliber of tester and U type ground pipe laying 15 was inconsistent, middle PE reducer union hot melt with DN32-DN25 connected.
The model of above-mentioned A/D converting analogue load module is 04AD-E2; The model of PLC is DVP16ES2; The model of man-machine interface is DOP-B07S211, man-machine interface has USB flash disk multiprogram memory function, and the size of memory capacity depends on the memory size of external USB flash disk, in entire work process, all test datas will be saved in the removable USB flash disk, make things convenient for copies data; The test data of any time will show on man-machine interface, man-machine interface also has the RS485 interface of standard, test data can be uploaded to PC, utilize the software configuration king data presentation on the display screen can be come out, and with the real-time change of the form video data of graph curve, the result who observes also can store on PC; Transmitter is installed at the tester place, and PC place a long way off (in 200 meters scopes) install receiver, can realize wireless remote monitering, can realize the observation and the storage of data equally.
The method of using above-mentioned tester to test, its testing procedure is as follows:
The first step: the preparation before the test.The ground pipe laying of can circulation fluid is embedded in by in the hole-drilled stratum of designing requirement, after the boring backfill, placed 2 ~ 3 days, make ground temperature return to original state, reduce the disturbance of boring, guarantee the accurate of measurement result the stratum.A, the B two ends of tester circulating line are connected with special fit 14 with the two ends of U type ground pipe laying 15 respectively, so far promptly form a complete loop.After the energized, open vent valve 7, water compensating valve 9, T-valve 8 is opened to exhaust condition, ON cycle water pump 2, regulate pump rotary speed and promptly regulate flow, will be full of water in the closed circuit, discharge the gas in the closed circuit by moisturizing end C to setting value, close vent valve 7, water compensating valve 9, T-valve 8 is opened to recurrent state, tested readyly, can begin test job.
Second step: model selection.Select hot physical property measurement pattern in stratum or ground pipe laying heat test pattern.The test philosophy of two kinds of test patterns is as follows respectively:
(1) heat dissipation capacity of ground heat exchanger test
Ground pipe laying heat dissipation capacity mainly is the simulation air-conditioning system actual operating mode in summer, under the situation of given ground pipe laying out temperature, determines the heat of every meter hole depth.Computing formula is:
In the formula,
---every meter hole depth heat of ground heat exchanger,
---the total heat of ground pipe laying,
---the flow of circulation fluid,
---pipe laying is imported and exported the temperature difference,
(2) test of the hot rerum natura of boring original position
The test data disposal route of the hot rerum natura of boring original position is to adopt the line source theory, utilizes anti-inference method to derive the ground thermal property parameter.Its method is: from computing machine, take out the experimental test result, its result with software simulation compared, make variance with
When obtaining minimum value, the thermal physical property parameter that calculates by heat transfer model promptly is the result that asks, variance and calculating formula as follows:
In the formula,
---the
The medial temperature of the pipe laying inner fluid that goes out by Model Calculation constantly;
Also test figure directly can be imported the earth source heat pump ground thermal property testing software of specialty, by calculating the thermal physical property parameter of on-the-spot ground, can determine under the situation of different out temperatures according to the buried guard system design software of specialty simultaneously, definitely the heat of pipe laying unit length.
The 3rd step: different mode test:
1. under the hot physical property measurement pattern in stratum, concrete steps are as follows:
(1) pattern of selection control heating power;
(2) 2 switching times of water circulating pump are set;
(3) ON cycle water pump 2 and electric heater 3;
(4) set heating power and circular flow;
(5) test, storage data;
(6) detect the ground pipe laying and import and export the temperature difference and whether reach requirement,, then readjust heater power and get back to top (5) step,, then enter next step if reach if do not reach;
(7) the judgement test is carried out the time, continues to finish test after 48 hours;
2. under ground pipe laying heat test pattern, concrete steps are as follows:
(1) pattern of the buried tube inlet water temperature of selection control;
(2) 2 switching times of water circulating pump and buried tube inlet water temperature are set;
(3) ON cycle water pump 2 and electric heater 3;
(4) set circular flow;
(5) test, storage data;
(6) detect buried tube inlet water temperature and whether reach requirement,, then readjust heater power and get back to top (5) step,, then enter next step if reach if do not reach;
(7) the judgement test is carried out the time, continues to finish test after 48 hours.
The data of test storage are converted to curve intuitively by software EXCEL, calculate according to formula (1), (2), can obtain the important parameter of formation thermal conductivity, thermal resistance or these the buried tube portion designs of well depth heat of ground pipe laying unit.
The beneficial effects of the utility model are: the tester compact conformation, be easy to carry; The several data observed pattern guarantees carrying out smoothly of test; An instrument can be realized two kinds of test patterns of hot physical property measurement in stratum and heat test simultaneously, and dual-use is economical convenient; Two ebullators use in turn, have prolonged the serviceable life of ebullator, rotating speed that simultaneously can the step-less adjustment water pump, and test is regulated more convenient; On-the-spot stable, test data is accurate, be beneficial to the research and development of geothermal heat pump air-conditioning system and apply.
Description of drawings
Fig. 1 is the theory structure synoptic diagram of tester;
Fig. 2 is the instrument system block diagram of tester supervisory system;
Fig. 3 is a tester supervisory system electrical schematic diagram;
Fig. 4 is the special fit synoptic diagram;
Fig. 5 is the tester test flow chart.
Among the figure: the 1-flow sensor; The 2-water circulating pump; The 3-electric heater; The 4-expansion drum; The 5-temperature sensor; The 6-pressure transducer; The 7-vent valve; The 8-T-valve; The 9-water compensating valve; The 10-power supply; The 11-motor servo driver; The 12-supervisory system; The 13-power sensor; The 14-special fit; 15-U type ground pipe laying.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and case study on implementation.
Embodiment 1
Fig. 1 is the theory structure synoptic diagram of tester, and this tester comprises the pipeline circulation system, test macro and supervisory system.
Wherein the pipeline circulation system is by flow sensor 1, water circulating pump 2, electric heater 3, expansion drum 4, vent valve 7, special fit 14, U type ground pipe laying 15, T-valve 8 and water compensating valve 9 constitute, flow sensor 1 one sides are held with being threaded with tester inlet A by the stainless-steel tube pipeline of DN32, be connected to T-valve 8 on this segment pipe, tester moisturizing C terminates on T-valve 8 lower channel, on tester moisturizing C end pipeline, be connected to water compensating valve 9, the opposite side of LWGY-25 turbine flow transducer 1 joins by stainless-steel tube pipeline and the PWN-162 type water circulating pump 2 usefulness screw threads of DN32, water circulating pump 2 tops are that electric heater 3 bottoms of 12KW are with being welded to connect by pipeline and specified heating power, electric heater 3 tops link to each other with expansion drum 4 usefulness arc welding by pipeline, one side of electric heater 3 is held with being threaded with tester outlet B by pipeline, on this place's pipeline with the vent valve 7 that has been threaded, the outlet of tester inlet A end by special fit 14 and U type ground pipe laying 15 is with being threaded, the inlet of tester outlet B end by special fit 14 and U type ground pipe laying 15 be with being threaded, thereby constitute a pipeline circulation system;
What the connecting tube in the tester, joint, elbow and threeway were adopted is the stainless-steel tube of DN32, and expansion drum 4 arc weldings are at the upper end of electric heater 3, P
2Pressure transducer 6 and T
2Temperature sensor 5 usefulness arc weldings are on the pipeline of a side of electric heater 3, the pipe section arc welding that connects water circulating pump 2 and electric heater 3 is in electric heater 3 lower ends, the connection of tester pipeline circulation system miscellaneous part in circulation line all is to be threaded by connecting tube, joint, elbow or threeway, and two water circulating pumps 2 are connected in parallel in the pipeline circulation system.
Above-mentioned U type ground pipe laying 15 is that test site is buried in advance, is full of water in the pipe laying and port sealed, and the backfill of holing, the U type ground pipe laying 15 of black line right side part does not belong to the device scope of this tester among Fig. 1, so the with dashed lines signal.
Test macro is made of flow sensor 1, temperature sensor 5, pressure transducer 6, power sensor 13, LWGY-25 turbine flow transducer 1 threaded one end is connected on the tester inlet A end pipeline, the other end links to each other with supervisory system 12, is arranging T respectively on the pipeline that flow sensor 1 and tester inlet A end is connected and on electric heater 3 and the pipeline that tester outlet B end is connected
1And T
2Temperature sensor 5 and P
1And P
2Pressure transducer 6 is arranged a T respectively at tester box house and outside
3And T
4Temperature sensor 5, T
1, T
2, T
3, T
4Temperature sensor 5, P
1And P
2The other end of pressure transducer 6 links to each other with supervisory system 12, and power sensor 13 1 ends link to each other with electric heater 3, and the other end links to each other with supervisory system 12.
Fig. 2 is the instrument system block diagram of tester supervisory system, the consisting of of instrument system: analog measurement module one end and flow sensor 1, T
1, T
2, T
3, T
4Temperature sensor 5, P
1And P
2Pressure transducer 6, power sensor 13 are connected, the other end is connected with A/D converting analogue load module, PLC one end is connected with A/D converting analogue load module, the other end is connected with man-machine interface, switching value output by the I/O of system mouth, man-machine interface is connected with USB flash disk memory storage, PC, provides supporting power supply and fan for system in addition.
Fig. 3 is a tester supervisory system electrical schematic diagram, the consisting of of operation control system: 220V AC power 10, and this power supply is connected with meter switch, instrument power by the phase sequence relay; Pump power is in parallel with instrument power through pump switch simultaneously; 380V AC power 10 is connected with electric heater 3 by phase sequence relay, contactless contactor simultaneously, and electric heater 3 links to each other with power sensor 13 input ends.
Above-mentioned flow sensor 1 is the LWGY-25 turbine flow transducer, in order to produce and the corresponding pulse signal of flow value; Temperature sensor 5 is PT100, in order to produce and the corresponding normalized current signal of temperature value; Pressure transducer 6 is a HM20-1 type pressure unit, in order to produce and the force value corresponding voltage signal; The model of power sensor is PK-6013, in order to produce and the performance number corresponding voltage signal; The specified heating power of electric heater 3 is 12KW, guarantees enough heating powers, realizes control to electric heater 3 heating powers by the control heating power; Water circulating pump 2 has been carried out the servomotor transformation, and intelligent speed-regulating instrument model is XMT-30001D, is used for realizing the step-less adjustment to pump rotary speed, thereby realizes the step-less adjustment to circulating fluid flow rate; Two water circulating pump models are PWN-162, can use in turn according to the time of setting, and overheated influence to test when having alleviated continuous operation has also prolonged serviceable life of water circulating pump.
The model of above-mentioned A/D converting analogue load module is 04AD-E2; The model of PLC is DVP16ES2; The model of man-machine interface is DOP-B07S211, man-machine interface has USB flash disk multiprogram memory function, and the size of memory capacity depends on the memory size of external USB flash disk, in entire work process, all test datas will be saved in the removable USB flash disk, make things convenient for copies data; The test data of any time will show on man-machine interface, man-machine interface also has the RS485 interface of standard, test data can be uploaded to PC, utilize KingView software the data presentation on the display screen can be come out, and with the real-time change of the form video data of graph curve, the result who observes also can store on PC; Transmitter is installed at the tester place, and PC place a long way off (in 200 meters scopes) install receiver, can realize wireless remote monitering, can realize the observation and the storage of data equally.
Fig. 4 is special fit 14 synoptic diagram, special fit 14 is to be formed by the 90 degree elbows of two DN32 and the direct current threeway arc welding of a DN32, what connect is double-U-shaped U type ground pipe laying 15, being connected of special fit 14 and tester part is to be threaded, an end that connects U type ground pipe laying 15 need and an end to have the joint that the internal thread other end can be connected with U type ground pipe laying 15 hot melts continuous; If the ground pipe laying of single U type 15 does not just need special fit, only need the above-mentioned joint that has internal thread tester can be connected with U type ground pipe laying 15, because of ground pipe laying commonly used is the HDPE pipe of DN25 or DN32, so joint commonly used is the tapped PE joint of DN25 or DN32, when the caliber of tester and U type ground pipe laying caliber were inconsistent, middle PE reducer union hot melt with DN32-DN25 connected.
Fig. 5 is the tester test flow chart, and test process of the present utility model specifically comprises following step:
The first step: the preparation before the test.The ground pipe laying of filling circulation fluid is embedded in by in the hole-drilled stratum of designing requirement, after the boring backfill, placed 2 ~ 3 days, make ground temperature return to original state, reduce the disturbance of boring, guarantee the accurate of measurement result the stratum.A, the B two ends of tester circulating line are connected with special fit 14 with the two ends of U type ground pipe laying 15 respectively, so far promptly form a complete loop.After the energized, open vent valve 7, water compensating valve 9, T-valve 8 is opened to exhaust condition, ON cycle water pump 2, regulate pump rotary speed and promptly regulate flow, will be full of water in the closed circuit, discharge the gas in the closed circuit by moisturizing end C to setting value, close vent valve 7, water compensating valve 9, T-valve 8 is opened to recurrent state, tested readyly, can begin test job.
Second step: model selection.Select hot physical property measurement pattern in stratum or ground pipe laying heat test pattern.
The 3rd step: different mode test:
1. under the hot physical property measurement pattern in stratum, concrete steps are as follows:
(1) pattern of selection control heating power;
(2) 2 switching times of water circulating pump are set;
(3) ON cycle water pump 2 and electric heater 3;
(4) set heating power and circular flow;
(5) test, storage data;
(6) detect the ground pipe laying and import and export the temperature difference and whether reach requirement,, then readjust heater power and get back to top (5) step,, then enter next step if reach if do not reach;
(7) the judgement test is carried out the time, continues to finish test after 48 hours;
2. under ground pipe laying heat test pattern, concrete steps are as follows:
(1) pattern of the buried tube inlet water temperature of selection control;
(2) 2 switching times of water circulating pump and buried tube inlet water temperature are set;
(3) ON cycle water pump 2 and electric heater 3;
(4) set circular flow;
(5) test, storage data;
(6) detect buried tube inlet water temperature and whether reach requirement,, then readjust heater power and get back to top (5) step,, then enter next step if reach if do not reach;
(7) the judgement test is carried out the time, continues to finish test after 48 hours.
The data of test storage are converted to curve intuitively by software EXCEL, calculate according to formula (1), (2), can obtain the important parameter of formation thermal conductivity, thermal resistance or these the buried tube portion designs of well depth heat of ground pipe laying unit.
Use this tester and can realize the test of the hot physical property measurement in stratum and two kinds of test patterns of heat dissipation capacity test, adaptability is strong, can satisfy dissimilar testing requirements.
Embodiment 3
Ground pipe laying significant depth is 80m, the ground pipe laying of instrument connection is single U type, employing be PE100-φ 25mm hdpe pipe, ground pipe laying backfill is the mixing slurry (1:4) of bentonitic clay, fine sand, boring aperture is φ 150mm, and circulatory mediator is a clear water in the pipe.
A, the B two ends of the tester circulating line of embodiment 1 are connected with the PE joint that has internal thread of DN32 and the PE reducer union of DN32-DN25 with the two ends of U type ground pipe laying 15 respectively, wherein between reducer union and the U type ground pipe laying, and to have between the PE joint of internal thread be sweat soldering, between the PE joint that has an internal thread and the tester is to be threaded, and so far promptly forms a complete loop.After the energized, open vent valve 7, water compensating valve 9, T-valve 8 is opened to exhaust condition, selected the pattern of control heating power, the ON cycle water pump, regulate pump rotary speed and promptly regulate flow to setting value, to also be full of water in the circulation pipe in the test box, discharge the gas in the closed circuit, close vent valve 7, water compensating valve 9, T-valve 8 is opened to recurrent state, formally begun test.The heating power, tester temperature in and the outlet temperature that arrive of continuous acquisition, flow value are as measurement data within a certain period of time, utilize the parameter estimation method to obtain the average coefficient of heat conductivity and the boring thermal resistance of ground again, reach testing goal, test and result of calculation following table.
Embodiment 4
Ground pipe laying significant depth is 100m, the ground pipe laying of instrument connection is single U type, employing be PE100-φ 32mm hdpe pipe, ground pipe laying backfill is the mixing slurry (1:5) of bentonitic clay, yellow ground, boring aperture is φ 130mm, and circulatory mediator is a clear water in the pipe.
The A of the tester circulating line of embodiment 1, B two ends are connected with the two ends of the U type ground pipe laying 15 PE joint that has internal thread with DN32 respectively, be sweat soldering between PE joint and the U type ground pipe laying wherein, with be to be threaded between the tester, so far promptly form a complete loop.After the energized, open vent valve 7, water compensating valve 9, T-valve 8 is opened to exhaust condition, selected the pattern of control pipe laying inlet water temperature, the ON cycle water pump, regulate pump rotary speed and promptly regulate flow to setting value, to also be full of water in the circulation pipe in the test box, discharge the gas in the closed circuit, close vent valve 7, water compensating valve 9, T-valve 8 is opened to recurrent state, formally begun test.The tester inlet water temperature that arrives of continuous acquisition and outlet water temperature, flow value are as measurement data within a certain period of time, pressure transducer is measured the resistance of ground pipe laying simultaneously, utilize the formula (1) that provides to calculate the heat dissipation capacity in summer of ground pipe laying again, test and the result of calculation following table.
Claims (1)
1. the hot rerum natura of stratum original position of an earth source heat pump and ground pipe laying heat tester is characterized in that it comprises the pipeline circulation system, test macro and supervisory system; Wherein the pipeline circulation system is by flow sensor (1), water circulating pump (2), electric heater (3), expansion drum (4), vent valve (7), special fit (14), U type ground pipe laying (15), T-valve (8) and water compensating valve (9) constitute, flow sensor (1) one side is connected with tester inlet (A) end by pipeline, be connected to T-valve (8) on this segment pipe, tester water supplement port (C) terminates on T-valve (8) lower channel, on tester water supplement port (C) end pipeline, be connected to water compensating valve (9), the opposite side of flow sensor (1) joins by pipeline and water circulating pump (2) bottom, water circulating pump (2) top is connected with electric heater (3) bottom by pipeline, electric heater (3) top links to each other with expansion drum (4) by pipeline, one side of electric heater (3) is connected with tester outlet (B) end by pipeline, be connected to vent valve (7) on this place's pipeline, tester inlet (A) end is connected with the outlet of U type ground pipe laying (15) by special fit (14), and tester outlet (B) end is connected with the inlet of U type ground pipe laying (15) by special fit (14);
Described test macro is made of flow sensor (1), temperature sensor (5), pressure transducer (6), power sensor (13), flow sensor (1) one terminates on tester inlet (A) the end pipeline, the other end links to each other with supervisory system (12), on the pipeline that flow sensor (1) and tester inlet (A) end is connected and electric heater (3) and tester outlet (B) hold on the pipeline that is connected T be installed respectively
1And T
2Temperature sensor (5) and P
1And P
2Pressure transducer (6) is arranged T respectively at tester box house and outside
3And T
4Temperature sensor (5), described T
1, T
2,T
3, T
4Temperature sensor (5), P
1And P
2The other end of pressure transducer (6) links to each other with supervisory system (12) respectively, and power sensor (13) one ends link to each other with electric heater (3), and the other end links to each other with supervisory system (12);
Described supervisory system (12) is made up of instrument system and operation control system, consisting of of instrument system wherein: analog measurement module one end links to each other with flow sensor (1), temperature sensor (5), pressure transducer (6), power sensor (13) respectively, the other end links to each other with A/D converting analogue load module, PLC one end links to each other with A/D converting analogue load module, the other end is connected with man-machine interface, switching value output by the I/O of system mouth, man-machine interface is connected with USB flash disk memory storage, PC, provides supporting power supply and fan for system in addition; Consisting of of operation control system: the 220V AC power, this power supply is connected with meter switch, instrument power by the phase sequence relay; Motor servo driver (11) is in parallel with instrument power simultaneously; Change the rotating speed of water pump by the knob aperture on the adjusting motor servo driver (11); the 380V AC power is connected with electric heater (3) by phase sequence relay, contactless contactor simultaneously; electric heater (3) links to each other with power sensor (13) input end, more than all power supplys all come from power supply (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010206051235U CN201885985U (en) | 2010-11-15 | 2010-11-15 | Tester for in-situ formation thermal property and ground pipe transferred heat of ground source heat pump |
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| CN2010206051235U CN201885985U (en) | 2010-11-15 | 2010-11-15 | Tester for in-situ formation thermal property and ground pipe transferred heat of ground source heat pump |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288311A (en) * | 2011-09-01 | 2011-12-21 | 北京联飞翔科技股份有限公司 | Underground temperature measurement device and method |
| CN104280257A (en) * | 2014-09-30 | 2015-01-14 | 合肥天地源节能技术开发有限公司 | Heat exchange capability testing equipment of underground heat exchanger of ground source heat pump |
| CN109141952A (en) * | 2018-09-06 | 2019-01-04 | 陕西延长石油国际勘探开发工程有限公司 | A kind of U-shaped well formula performance testing device of heat exchanger of mid-deep strata and method |
-
2010
- 2010-11-15 CN CN2010206051235U patent/CN201885985U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288311A (en) * | 2011-09-01 | 2011-12-21 | 北京联飞翔科技股份有限公司 | Underground temperature measurement device and method |
| CN104280257A (en) * | 2014-09-30 | 2015-01-14 | 合肥天地源节能技术开发有限公司 | Heat exchange capability testing equipment of underground heat exchanger of ground source heat pump |
| CN109141952A (en) * | 2018-09-06 | 2019-01-04 | 陕西延长石油国际勘探开发工程有限公司 | A kind of U-shaped well formula performance testing device of heat exchanger of mid-deep strata and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110629 Effective date of abandoning: 20120725 |