CN220104923U - Rock-soil thermal physical property testing device - Google Patents
Rock-soil thermal physical property testing device Download PDFInfo
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- CN220104923U CN220104923U CN202223433079.6U CN202223433079U CN220104923U CN 220104923 U CN220104923 U CN 220104923U CN 202223433079 U CN202223433079 U CN 202223433079U CN 220104923 U CN220104923 U CN 220104923U
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- 239000002689 soil Substances 0.000 title claims abstract description 31
- 238000012360 testing method Methods 0.000 title claims abstract description 26
- 230000000704 physical effect Effects 0.000 title description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 95
- 238000012806 monitoring device Methods 0.000 claims abstract description 20
- 230000001502 supplementing effect Effects 0.000 claims abstract description 15
- 239000011435 rock Substances 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000007654 immersion Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 6
- 239000000523 sample Substances 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
A rock-soil thermal property testing device is characterized in that a water tank (1) is arranged in a device body (12), and an electric heater (8) is used for providing continuous heat flow for the water tank (1); the electric heater (8) is provided with a power regulator (8 a), the water tank (1) is provided with a third temperature controller (3 c), and the circulating water inlet pipeline is also provided with a first temperature sensor (3 a), a backwater pressure monitoring device (4 a) and a water inlet valve (5 a); the circulating water outlet pipeline is provided with a second temperature sensor (3 b), a water supply pressure monitoring device (4 b), a water outlet valve (5 b), a flow sensing device (6) and a manual flow valve (7), and the water supplementing pipeline is provided with a water supplementing valve (5 c). The utility model is integrated with a box body, is convenient for engineering project application, is convenient to carry and operate, comprehensively considers the influence of various factors in the depth direction and the horizontal direction of the rock and soil, and improves the accuracy of the rock and soil thermophysical property test.
Description
Technical Field
The utility model relates to the technical field of rock-soil thermophysical property testing, in particular to a rock-soil thermophysical property testing device.
Background
Geothermal energy is a renewable energy source with rich reserves, wide distribution, stability and reliability. The ground heat pump air conditioning system with buried pipes is used as the main mode of shallow geothermal energy utilization, and the thermal physical property of the rock and soil is an important parameter affecting the total length of the buried pipes or the drilled holes of the system, so that the cooling and heating capacity of the system is determined. The air conditioning effect cannot be ensured due to insufficient pipe burying; excessive pipe laying will increase initial investment.
At present, a common method for testing the thermal properties of rock and soil is to calculate the thermal conductivity coefficient of soil according to a Fourier heat conduction law by extracting a rock and soil sample, but the thermal conductivity coefficient is too large according to 25% of samples researched, the thermal conductivity coefficient is smaller according to 65% of samples, and the design of a buried pipe heat exchanger is directly influenced by the deviation of the test on the thermal properties of rock and soil, so that the running reliability of a system is influenced; some scholars propose a transient method capable of measuring the thermophysical parameters of rock and soil quickly, namely, inserting a probe into the soil to be measured at a test site and then heating the soil with constant power, and the method is limited in that only the soil at the probe can be tested and cannot represent the thermophysical properties of most of the soil.
Disclosure of Invention
The utility model solves the following technical problems:
1) Solves the problem of larger rock-soil thermophysical property deviation caused by large difference between the extracted soil sample and the underground original structure.
2) The method solves the problem of low accuracy of the rock-soil thermophysical parameter caused by the defect of the analysis method.
3) The method solves the problem that the influence on the thermal physical properties of the buried pipe caused by the fact that the temperature of the soil around the buried pipe can not be fully reflected due to the limited operation time of the test system.
The technical scheme adopted for solving the technical problems is as follows:
the rock-soil thermophysical property testing device comprises a device body 12, wherein a water tank 1 is arranged in the device body 12, an electric heater 8 is arranged in the water tank 1, and the electric heater 8 is used for providing continuous heat flow for a water tank 1; the electric heater 8 is provided with a power regulator 8a, and the power regulator 8a is used for controlling the heating quantity of the electric heater 8;
the water tank 1 is provided with a third temperature controller 3c, and the third temperature controller 3c is used for controlling the temperature of the water tank 1.
The water tank 1 is communicated with a circulating water inlet pipeline through a water pump 2, and a frequency converter 2a is arranged on the water pump 2 and used for controlling the frequency of the water pump; the circulating water inlet pipeline is also provided with a first temperature sensor 3a, a backwater pressure monitoring device 4a and a water inlet valve 5a;
the water tank 1 is communicated with a circulating water outlet pipeline, a second temperature sensor 3b, a water supply pressure monitoring device 4b, a water outlet valve 5b, a flow sensing device 6 and a manual flow valve 7 are also arranged on the circulating water outlet pipeline,
one end of the water tank 1 is reserved with a water supplementing interface which is communicated with a water supplementing pipeline, and a water supplementing valve 5c is arranged on the water supplementing pipeline.
The utility model also has the following additional technical characteristics:
the technical scheme of the utility model is further specifically optimized: the rock-soil thermophysical property testing device also comprises an acquisition module 9, a control module 10 and a display module 11; the acquisition module 9 is connected to the control module 10, and the control module 10 is connected to the display module 11.
Compared with the prior art, the utility model has the advantages that:
the utility model has the advantages of 1, integration and convenient engineering project application in a box body, portability and convenient operation.
The method has the advantage of 2, comprehensively considers the influence of various factors in the depth direction and the horizontal direction of the rock and soil, and improves the accuracy of the rock and soil thermophysical property test.
The utility model optimizes the error control link by combining the data acquisition and the analog control module, can reduce the measurement error and improves the reliability of the result.
Drawings
FIG. 1 is a schematic diagram of a rock-soil thermal property testing device;
fig. 2 is a schematic diagram of the control principle of the present utility model.
Reference numerals illustrate: the water tank 1, the water pump 2, the frequency converter 2a, the first temperature sensor 3a, the second temperature sensor 3B, the third temperature controller 3c, the backwater pressure monitoring device 4a, the water supply pressure monitoring device 4B, the water inlet valve 5a, the water outlet valve 5B, the water supplementing valve 5c, the flow sensing device 6, the manual flow valve 7, the electric heater 8, the power regulator 8a, the water supply pressure monitoring device 4B of the acquisition unit A9a, the water supply pressure monitoring device 4B of the acquisition module B9B, the control module 10, the display module 11 and the device body 12.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.
Example 1
The rock-soil thermophysical property testing device comprises a device body 12, wherein a water tank 1 is arranged in the device body 12, an electric heater 8 is arranged in the water tank 1, and the electric heater 8 is used for providing continuous heat flow for a water tank 1; the electric heater 8 is provided with a power regulator 8a, and the power regulator 8a is used for controlling the heating quantity of the electric heater 8.
The water tank 1 is provided with a third temperature controller 3c, and the third temperature controller 3c is used for controlling the temperature of the water tank 1.
The water tank 1 is communicated with a circulating water inlet pipeline through a water pump 2, and a frequency converter 2a is arranged on the water pump 2 and used for controlling the frequency of the water pump; the circulating water inlet pipeline is also provided with a first temperature sensor 3a, a backwater pressure monitoring device 4a and a water inlet valve 5a.
The water tank 1 is communicated with a circulating water outlet pipeline, and a second temperature sensor 3b, a water supply pressure monitoring device 4b, a water outlet valve 5b, a flow sensing device 6 and a manual flow valve 7 are further arranged on the circulating water outlet pipeline.
One end of the water tank 1 is reserved with a water supplementing interface which is communicated with a water supplementing pipeline, and a water supplementing valve 5c is arranged on the water supplementing pipeline.
In practical use of embodiment 1, the model of the frequency converter 2a is a VLT Basic Drive denfos frequency converter. The model of the first temperature sensor 3a is a FXTT001 temperature sensor; the model of the second temperature sensor 3b is a FXTT001 temperature sensor. The model of the backwater pressure monitoring device 4a is an A05-CAN German STW sensor; the model of the water supply pressure monitoring device 4b is an A05-CAN German STW sensor. The type of flow sensing device 6 is a FXFF018 willer sensor. The model of the electric heater 8 is an EIMH2/17-3.5W immersion heater; the power regulator 8a is a TPH10 three-phase power controller.
Example 2
On the basis of the embodiment 1, the rock-soil thermophysical property testing device also comprises an acquisition module 9, a control module 10 and a display module 11; the acquisition module 9 is connected to the control module 10, and the control module 10 is connected to the display module 11.
The control principle of embodiment 2 is:
the acquisition module 9 is connected with the frequency converter 2a, the third temperature controller 3c, the power regulator 8a, the flow sensing device 6, the backwater pressure monitoring device 4a, the water supply pressure monitoring device 4b, the first temperature sensor 3a and the second temperature sensor 3b.
The acquisition module 9 acquires the frequency of the water pump 2 through the frequency converter 2 a; the acquisition module 9 acquires the temperature of the water tank 1 through the third temperature controller 3 c; the acquisition module 9 acquires the input power of the electric heater 8 through the power regulator 8 a; the acquisition module 9 acquires circulating water flow through the flow sensing device 6; the acquisition module 9 acquires the circulating water inlet pressure through the backwater pressure monitoring device 4 a; the acquisition module 9 acquires the circulating water outlet pressure through the water supply pressure monitoring device 4 b; the acquisition module 9 acquires the circulating water inlet temperature through the first temperature sensor 3 a.
The acquisition module 9 acquires the circulating water outlet temperature through the second temperature sensor 3b, the acquisition module 9 transmits data to the control module 10, and the control module 10 obtains the thermal physical property of the rock and soil and the heat of each linear meter of drilling through the linear heat source model simulation analysis.
The control module 10 transmits the simulation result to the display module 11.
Example 2 in actual use, the model of the acquisition module 9 is a GM10 data acquisition system. The model of the control module 10 is PLC-AH 500-station AH series PLC. The model of the display module 11 is a TPC7022Nt intelligent Internet of things touch screen.
The above detailed description of embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model as claimed, but is merely representative of selected embodiments of the utility model.
Claims (9)
1. A rock and soil thermophysical property testing device is characterized in that: the device comprises a device body (12), wherein a water tank (1) is arranged in the device body (12), an electric heater (8) is arranged in the water tank (1), and the electric heater (8) is used for providing continuous heat flow for the water tank (1); the electric heater (8) is provided with a power regulator (8 a), and the power regulator (8 a) is used for controlling the heating capacity of the electric heater (8);
a third temperature controller (3 c) is arranged on the water tank (1), and the third temperature controller (3 c) is used for controlling the temperature of the water tank (1);
the water tank (1) is communicated with the circulating water inlet pipeline through the water pump (2), and a frequency converter (2 a) is arranged on the water pump (2) and used for controlling the frequency of the water pump; the circulating water inlet pipeline is also provided with a first temperature sensor (3 a), a backwater pressure monitoring device (4 a) and a water inlet valve (5 a);
the water tank (1) is communicated with a circulating water outlet pipeline, and a second temperature sensor (3 b), a water supply pressure monitoring device (4 b), a water outlet valve (5 b), a flow sensing device (6) and a manual flow valve (7) are further arranged on the circulating water outlet pipeline;
one end of the water tank (1) is reserved with a water supplementing interface which is communicated with a water supplementing pipeline, and the water supplementing pipeline is provided with a water supplementing valve (5 c);
the rock-soil thermophysical property testing device also comprises an acquisition module (9), a control module (10) and a display module (11); the acquisition module (9) is connected to the control module (10), and the control module (10) is connected to the display module (11).
2. The geotechnical thermophysical property testing device of claim 1, wherein: the model of the frequency converter (2 a) is a VLT Basic Drive Danfoss frequency converter.
3. The geotechnical thermophysical property testing device of claim 1, wherein: the model of the first temperature sensor (3 a) is an FXTT001 temperature sensor; the model of the second temperature sensor (3 b) is a FXTT001 temperature sensor.
4. The geotechnical thermophysical property testing device of claim 1, wherein: the model of the backwater pressure monitoring device (4 a) is A05-cAN German STW sensor; the model of the water supply pressure monitoring device (4 b) is A05-cAN German STW sensor.
5. The geotechnical thermophysical property testing device of claim 1, wherein: the type of the flow sensor device (6) is a FXFF018 Weigler sensor.
6. The geotechnical thermophysical property testing device of claim 1, wherein: the model of the electric heater (8) is an EIMH2/17-3.5W immersion heater; the model of the power regulator (8 a) is a TPH10 three-phase power controller.
7. The geotechnical thermophysical property testing device of claim 1, wherein: the model of the acquisition module (9) is a GM10 data acquisition system.
8. The geotechnical thermophysical property testing device of claim 1, wherein: the model of the control module (10) is PLC-AH500 platform AH series PLC.
9. The geotechnical thermophysical property testing device of claim 1, wherein: the model of the display module (11) is a TPC7022Nt intelligent Internet of things touch screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223433079.6U CN220104923U (en) | 2022-12-21 | 2022-12-21 | Rock-soil thermal physical property testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223433079.6U CN220104923U (en) | 2022-12-21 | 2022-12-21 | Rock-soil thermal physical property testing device |
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| Publication Number | Publication Date |
|---|---|
| CN220104923U true CN220104923U (en) | 2023-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223433079.6U Active CN220104923U (en) | 2022-12-21 | 2022-12-21 | Rock-soil thermal physical property testing device |
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| Country | Link |
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| CN (1) | CN220104923U (en) |
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- 2022-12-21 CN CN202223433079.6U patent/CN220104923U/en active Active
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