CN202486080U - Unattended rock-soil thermo-physical property tester for ground source heat pump - Google Patents

Abstract

The utility model discloses an unattended rock-soil thermo-physical property tester for a ground source heat pump. A power source is connected with a pipeline electric heater, a frequency converter, an intelligent electricity transducer and a data acquisition module for power supply. A contactor, a thyristor regulator and the intelligent electricity transducer are installed on a power supply circuit of the pipeline electric heater sequentially along a current direction. A water inlet of a water supply pipeline and a water outlet of a return water pipeline are respectively connected with the pipeline electric heater. A water flow switch, a third temperature sensor, a second flow sensor and a fourth temperature sensor are installed on the water supply pipeline sequentially along a water flow direction. A first temperature sensor, a variable frequency water circulating pump, a first flow sensor, and a second temperature sensor are installed on the return water pipeline sequentially along the water flow direction. The variable frequency water circulating pump is connected with and driven by the frequency converter. The unattended rock-soil thermo-physical property tester for the ground source heat pump allows for automatic measurement of rock-soil thermo-physical parameters, failure diagnosis, automatic alarming and automatic interference elimination, manpower and labor resources are reduced, and experimental testing cost is reduced greatly.

Description

A kind of unattended type soil source heat pump ground thermal property tester

Technical field

The utility model belongs to source (soil source), ground art of heat pumps, is specifically related to a kind of unattended type earth source heat pump ground thermal property tester.

Background technology

The shallow layer surface ground thermal property is maximum to the earth-source hot-pump system performance impact, is the most basic, most important parameter in soil source heat pump system design and the research process.Can obtain ground thermal property parameter (like soil heat exchange coefficient, boring thermal resistance etc.) through ground thermal response test, these parameters directly influence the investment and the operational effect of this earth-source hot-pump system.Ground thermal response test has become the early-stage preparations basis of current soil source heat pump buried tube heat exchanger quantity and Design of length, and the ground thermal property parameter that obtains can be the underground heat analysis and design provides valuable data refer through testing.

Stipulate (GB50366-2009) that according to national standard " earth-source hot-pump system engineering legislation " ground thermal response test should be uninterrupted continuously, the duration should not be less than 48 hours.This has proposed strict demand to ground thermal property tester.For satisfying this requirement, need the soil source heat pump ground thermal property tester to have very strong robustness, and the requirement scene there is the people to see tube apparatus.In the ground thermal property test process, the soil source heat pump ground thermal property tester should not break down, otherwise needs experiment again.In addition, in the on-the-spot influence that receives other construction points of experiment, often jiggly situation can appear in supply voltage.This voltage fluctuation will certainly influence the variation of rate of flow of fluid and heater power, and electromagnetic interference (EMI) can exert an influence to the precision of measurement value sensor.At present, general earth source heat pump ground thermal property tester does not have remote measurement and control and Self-Test Diagnostics function.For guaranteeing that experiment safety carries out smoothly, need the field staff to keep an eye on the earth source heat pump ground thermal property tester, but this certainly will increase manpower and materials, has improved experimental cost; And the present soil source heat pump ground thermal property tester safeguard of all not supplying power is eliminated the influence of voltage fluctuation.

Summary of the invention

In order to overcome the defective that existing earth source heat pump ground thermal property tester can not remote measurement and control and can not Self-Test Diagnostics; The utility model discloses a kind of unattended type soil source heat pump ground thermal property tester; This device is through to the wireless remote monitoring and the control of earth source heat pump ground thermal property tester, and is on-the-spot unattended and do not receive distance limit.Realized the ground thermal property parameter automatic measurement, automatic fault diagnosis, report to the police automatically and disturb automatic elimination, reduced manpower and materials, greatly reduce the experiment test cost.

In order to achieve the above object, the utility model adopts following technical solution:

A kind of unattended type soil source heat pump ground thermal property tester; It is characterized in that, comprise first temperature sensor, second temperature sensor, three-temperature sensor, the 4th temperature sensor, first flow sensor, second flow sensor, sound transducer, duct type electric heater, supply channel, water return pipeline, frequency conversion water circulating pump, silicon-controlled voltage regulation device, frequency converter, intelligent power transmitter, power supply, data acquisition module, GPRS data transmission module, contactor, water flow switch and computing machine;

Said power supply connecting tube formula electric heater, frequency converter, intelligent power transmitter and data acquisition module are with power supply; Wherein, according to direction of current contactor, silicon-controlled voltage regulation device and intelligent power transmitter are installed successively in the supply line of tube electric heater; The water inlet of supply channel and the water delivering orifice of water return pipeline be connecting tube formula electric heater respectively; On supply channel, water flow switch, three-temperature sensor, second flow sensor and the 4th temperature sensor are installed successively according to water (flow) direction; On water return pipeline, according to water (flow) direction first temperature sensor, frequency conversion water circulating pump, first flow sensor and second temperature sensor are installed successively, the frequency conversion water circulating pump is connected with frequency converter and is driven by frequency converter; Wherein, second temperature sensor is positioned at the water inlet place of duct type electric heater, and water flow switch and three-temperature sensor are positioned at the water delivering orifice place of duct type electric heater;

First temperature sensor, second temperature sensor, three-temperature sensor, the 4th temperature sensor, first flow sensor, second flow sensor, sound transducer, silicon-controlled voltage regulation device, frequency converter, intelligent power transmitter, power supply, GPRS data transmission module, contactor are connected with data acquisition module respectively with water flow switch; Data acquisition module carries out radio communication through GPRS data transmission module and computing machine.

The utility model also comprises following other technologies characteristic:

Said temperature sensor, three-temperature sensor, first flow sensor, second flow sensor, sound transducer, duct type electric heater, frequency conversion water circulating pump, frequency converter and intelligent power transmitter are installed in the casing, and the part of supply channel, water return pipeline also is positioned at this casing.

Said data acquisition module adopts ADAM6024.

Said first temperature sensor, second temperature sensor, three-temperature sensor, the 4th temperature sensor, first flow sensor, second flow sensor, sound transducer, silicon-controlled voltage regulation device, frequency converter, intelligent power transmitter, GPRS data transmission module, contactor all are connected with data acquisition module through shielded signal wire with water flow switch.

The beneficial effect of the utility model is can realize the wireless remote measurement, realization multi-state measurement under unattended situation; Can realize the closed-loop control of automatic trouble diagnosis, permanent heating power, constant current amount, guarantee measuring accuracy, effectively improve earth source heat pump ground thermal property work efficiency, reduce manpower and materials, reduce testing cost.

Description of drawings

Fig. 1 is the system architecture synoptic diagram of the utility model.

Fig. 2 is the utility model data acquisition and system's control synoptic diagram.

Fig. 3 is based on the automatic trouble diagnosis schematic diagram of data fusion technology.

Fig. 4 is the schematic diagram that is electrically connected of the utility model.

Below in conjunction with accompanying drawing and embodiment the utility model is further explained.

Embodiment

Like Fig. 1, shown in Figure 2; The unattended type soil source heat pump ground thermal property tester of the utility model comprises first temperature sensor 1, second temperature sensor 2, three-temperature sensor 3, the 4th temperature sensor 4, first flow sensor 5, second flow sensor 6, sound transducer 7, duct type electric heater 8, supply channel 9, water return pipeline 10, frequency conversion water circulating pump 11, silicon-controlled voltage regulation device 12, frequency converter 13, intelligent power transmitter 14, power supply 16, data acquisition module 17, GPRS data transmission module 18, contactor 19, water flow switch 20 and computing machine 21.

As shown in Figure 4; Power supply 16 connecting tube formula electric heaters 8, frequency converter 13, intelligent power transmitter 14 and data acquisition module 17 are with power supply; Wherein, according to direction of current contactor 19, silicon-controlled voltage regulation device 12 and intelligent power transmitter 14 are installed successively in the supply line of tube electric heater 8; The water delivering orifice of the water inlet of supply channel 9 and water return pipeline 10 is connecting tube formula electric heater 8 respectively; On supply channel 9, water flow switch 20, three-temperature sensor 3, second flow sensor 6 and the 4th temperature sensor 4 are installed successively according to water (flow) direction; On water return pipeline 10, according to water (flow) direction first temperature sensor 1, frequency conversion water circulating pump 11, first flow sensor 5 and second temperature sensor 2 are installed successively, frequency conversion water circulating pump 11 is connected with frequency converter 13 and is driven by frequency converter 13; Wherein, second temperature sensor 2 is positioned at the water inlet place of duct type electric heater 8, and water flow switch 20 and three-temperature sensor 3 are positioned at the water delivering orifice place of duct type electric heater 8;

The inlet end of the endpiece of supply channel 9 and water return pipeline 10 is connected ground source heat interchanger 15 (pipe laying) respectively.

In the above-mentioned parts; Temperature sensor 2, three-temperature sensor 3, first flow sensor 5, second flow sensor 6, sound transducer 7, duct type electric heater 8, frequency conversion water circulating pump 11, frequency converter 13 and intelligent power transmitter 14 are installed in the casing, and the part of supply channel 9, water return pipeline 10 also is positioned at this casing.

Data acquisition module 17 adopts ADAM6024.

Frequency conversion water circulating pump 11 comprises the first frequency conversion water circulating pump and the second frequency conversion water circulating pump, the first frequency conversion water circulating pump and the second variable frequency pump the using and the reserved.

Frequency conversion water circulating pump 11 forms interlocking with duct type electric heater 8; That is: utilize water flow switch 20 to detect in the water supply line 9 whether current are arranged; When detecting when not having current, computing machine 21 sends control signal through Wi-Fi to data acquisition module 17, and data acquisition module 17 is issued control signal in the contactor 19 and silicon-controlled voltage regulation device 12 that is connected in duct type electric heater 8 supply lines; Cut off the electricity supply, prevent duct type electric heater 8 empty burnings.

First temperature sensor 1, second temperature sensor 2, three-temperature sensor 3, the 4th temperature sensor 4, first flow sensor 5, second flow sensor 6, sound transducer 7, silicon-controlled voltage regulation device 12, frequency converter 13, intelligent power transmitter 14, power supply 16, GPRS data transmission module 18, contactor 19 are connected with data acquisition module 17 respectively with water flow switch 20; All measuring-signals all are connected to data acquisition module 17 through shielded signal wire like temperature, flow, heater power and volume, and data acquisition module 17 is a digital signal with the analog signal conversion that receives.Data acquisition module 17 carries out radio communication through GPRS data transmission module 18 and computing machine 21.Among Fig. 2, AI is the analog quantity input; DI is the switching value input; A0 is analog quantity output; D0 is switching value output.

In the utility model, the effect or the design idea of each parts are following:

On the import and export of duct type electric heater 8 and confession, water return pipeline, two temperature points (4 temperature sensors are demarcated by measurement unit) are installed all, are guaranteed thermometric redundance and accuracy; (import and export of duct type electric heater 8) respectively installed a flow sensor and measured circulating water flow on confession, return pipe.

All the sensors outputting standard current signal directly sends to data acquisition module 17.Silicon-controlled voltage regulation device 12 can be accepted 0～5V control signal of data acquisition module 17 outputs; Realization is to the continuous adjusting of duct type electric heater 8 power 0～9kW; And utilize intelligent power transmitter 14 real power of monitoring duct type electric heater 8 in real time, calculating for heat flux provides reference frame.Data acquisition module 17 has the output signal of multi-path digital input and contactor 19, can realize the status monitoring control to flow switch 20, frequency conversion water circulating pump 11.Frequency conversion water circulating pump 11 is installed on water return pipeline 10, and for frequency conversion water circulating pump 11 has been equipped with frequency converter 13, frequency converter can be accepted the continuous adjusting of the control signal of data acquisition module 170～5V with realization water flow velocity and flow, and energy-conservation.Computing machine 21 (host computer) has good man computer interface, and is easy to operate, is prone to expansion, operation closed loop control algorithm, data anastomosing algorithm, to image data show in real time, historical data shows that the online treatment data obtain the ground thermal property parameter.

The course of work of the utility model is following:

Data acquisition module 17 sends to the computing machine 21 in the far-end network through GPRS data transmission module 18 with field data; Computing machine 21 real time record on-site signals; And send control signal according to the situation of on-site signal, and control signal sends to GPRS data transmission mould 18 through the GPRS wireless network, and GPRS data transmission module 18 is communicated by letter with data acquisition module 17; Be issued to frequency converter 13 and silicon-controlled voltage regulation device 12 by data acquisition module 17, realize the control of fluid flow and heating power.The upper special software of computing machine 21 operations can carry out real-time curve demonstration, historical trend curve display and data recording, processing to all temperature, flow and performance number, utilizes the measurement data real-time online to calculate the ground thermal property parameter.The signal that computing machine 21 is gathered through water flow switch 20 judges whether fluid flows; If do not flow; Then transmit control signal to data acquisition module 17 through GPRS data transmission module 18; This control signal control silicon-controlled voltage regulation device 12 is controlled the power of duct type electric heater 8 with contactor 19 teamworks, prevents duct type electric heater 8 empty burnings, plays protection equipment.

In computing machine 21, set fluid flow, flow is realized close-loop feedback control, can guarantee down that in external interference (like voltage fluctuation time) actual flow is consistent with the setting expectation value.Tube fluid is carried by frequency conversion water circulating pump 11 and is sent into buried pipe in pipe 15 after 8 heating of duct type well heater.Set the power of duct type well heater 8, heating power is realized close-loop feedback control, can overcome on-the-spot voltage fluctuation and realize permanent power control.Utilize the temperature sensor monitors fluid temperature (F.T.), flow sensor monitoring fluid flow, intelligent power transmitter monitoring heater power.After fluid is heated by duct type well heater 8; Pass through successively water flow switch 20, three-temperature sensor 3, second flow sensor 6, the 4th temperature sensor 4, supply channel 9, pipe laying 15 (earth source heat pump heat exchanger), water return pipeline 10, first temperature sensor 1, first flow sensor 5, second temperature sensor 2; Frequency conversion water circulating pump 11 is circulated back to duct type well heater 8 at last.Heated fluid is through ground source heat interchanger 15 and soil generation heat interchange, soil is carried out heat release after, return water temperature is lower than supply water temperature.So continuous circulation through behind the certain hour, reaches the heat transfer balance.Utilize all the sensors measured value can calculate the ground thermal property parameter.

Supply backwater temperature difference Δ T can use following formula to calculate:

$\mathrm{\&Delta;T}=\frac{\mathrm{<figure-callout\; id="3"\; label="T"\; filenames="HDA0000148955670000012.png"\; state="\{\{state\}\}">T</figure-callout>}3+T4-T1-\mathrm{<figure-callout\; id="2"\; label="T"\; filenames="HDA0000148955670000011.png,HDA0000148955670000012.png"\; state="\{\{state\}\}">T</figure-callout>}2}{2}---\left(1\right)$

In the formula, T1, T2, T3, T4 represent the measured value of first temperature sensor 1, second temperature sensor 2, three-temperature sensor 3 and the 4th temperature sensor 4 respectively.

Fig. 3 has provided the device of using the utility model, based on the automatic trouble diagnosis schematic diagram of data fusion technology.Data anastomosing algorithm is realized on far-end computer.Collect analog input signal and switching value signals such as all water flow switches, power supply main line contacts of contactor such as all temperature, flow, heating power, volume; Information according to all analog input amounts and switch input quantity; Utilize the data fusion technology to judge whether to break down, if fault is then sent sound and light alarm.As the volume when utilizing sound transducer measure field and equipment normally to move, be the reference volume of the normal operation of equipment with this volume.Set the bound scope that volume is reported to the police.Surpass this scope if detect on-the-spot sound, and keep certain hour not disappear yet, simultaneously, consider on-the-spot other analog quantitys and switching value data, judge whether to break down.Promptly utilize the data fusion technology to carry out fault diagnosis, as the then warning in time of breaking down, and cut off the electricity supply automatically, generation avoids a nasty accident.

One of characteristics of the utility model are that the real-time curve that can carry out measurement data shows and record; And can carry out the inquiry of historical data and call; Develop the thermal response analysis software voluntarily, can carry out automatic analyzing and processing in real time, obtain heat exchange data and soil physical parameter etc. data; Two of characteristics are that buried in-pipe flow amount of heat pump and heating power can be regulated as required continuously, realizing the measurement of the hot rerum natura of soil under the different load operating mode, and the result are compared, and improve measuring accuracy; Three of characteristics are that system has the automated data analysis function, can obtain the soil thermal physical property parameter according to the online data analytical calculation that collects; But four of characteristics are automatic trouble diagnosis.

Claims (4)

1. unattended type soil source heat pump ground thermal property tester; It is characterized in that, comprise first temperature sensor (1), second temperature sensor (2), three-temperature sensor (3), the 4th temperature sensor (4), first flow sensor (5), second flow sensor (6), sound transducer (7), duct type electric heater (8), supply channel (9), water return pipeline (10), frequency conversion water circulating pump (11), silicon-controlled voltage regulation device (12), frequency converter (13), intelligent power transmitter (14), power supply (16), data acquisition module (17), GPRS data transmission module (18), contactor (19), water flow switch (20) and computing machine (21);

Said power supply (16) connecting tube formula electric heater (8), frequency converter (13), intelligent power transmitter (14) and data acquisition module (17) are with power supply; Wherein, according to direction of current contactor (19), silicon-controlled voltage regulation device (12) and intelligent power transmitter (14) are installed successively in the supply line of tube electric heater (8); The water delivering orifice of the water inlet of supply channel (9) and water return pipeline (10) is connecting tube formula electric heater (8) respectively; Upward water flow switch (20), three-temperature sensor (3), second flow sensor (6) and the 4th temperature sensor (4) are installed successively at supply channel (9) according to water (flow) direction; Upward according to water (flow) direction first temperature sensor (1), frequency conversion water circulating pump (11), first flow sensor (5) and second temperature sensor (2) are installed successively at water return pipeline (10), frequency conversion water circulating pump (11) is connected with frequency converter (13) and is driven by frequency converter (13); Wherein, second temperature sensor (2) is positioned at the water inlet place of duct type electric heater (8), and water flow switch (20) and three-temperature sensor (3) are positioned at the water delivering orifice place of duct type electric heater (8);

First temperature sensor (1), second temperature sensor (2), three-temperature sensor (3), the 4th temperature sensor (4), first flow sensor (5), second flow sensor (6), sound transducer (7), silicon-controlled voltage regulation device (12), frequency converter (13), intelligent power transmitter (14), power supply (16), GPRS data transmission module (18), contactor (19) and water flow switch (20) are connected with data acquisition module (17) respectively; Data acquisition module (17) carries out radio communication through GPRS data transmission module (18) and computing machine (21).

2. unattended type soil source heat pump ground thermal property tester as claimed in claim 1; It is characterized in that; Said temperature sensor (2), three-temperature sensor (3), first flow sensor (5), second flow sensor (6), sound transducer (7), duct type electric heater (8), frequency conversion water circulating pump (11), frequency converter (13) and intelligent power transmitter (14) are installed in the casing, and the part of supply channel (9), water return pipeline (10) also is positioned at this casing.

3. unattended type soil source heat pump ground thermal property tester as claimed in claim 1 is characterized in that, said data acquisition module (17) adopts ADAM6024.

4. unattended type soil source heat pump ground thermal property tester as claimed in claim 1; It is characterized in that said first temperature sensor (1), second temperature sensor (2), three-temperature sensor (3), the 4th temperature sensor (4), first flow sensor (5), second flow sensor (6), sound transducer (7), silicon-controlled voltage regulation device (12), frequency converter (13), intelligent power transmitter (14), GPRS data transmission module (18), contactor (19) and water flow switch (20) all are connected with data acquisition module (17) through shielded signal wire.

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