CN112485291A - Heating type temperature static sounding device and calibration and test method thereof - Google Patents
Heating type temperature static sounding device and calibration and test method thereof Download PDFInfo
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- CN112485291A CN112485291A CN202011165625.5A CN202011165625A CN112485291A CN 112485291 A CN112485291 A CN 112485291A CN 202011165625 A CN202011165625 A CN 202011165625A CN 112485291 A CN112485291 A CN 112485291A
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- probe
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- 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
- G01N25/18—Investigating or analyzing materials by the use of thermal means by investigating thermal conductivity
Abstract
The invention discloses a heating type temperature static sounding device, which comprises a testing device, a static sounding instrument and a data acquisition and control device, wherein the testing device and the data acquisition and control device are connected through a lead; the testing device comprises a probe rod and a probe, the probe rod is connected with the probe rod through threads, the probe rod is arranged on the static sounding instrument, a lead is arranged in the probe rod, the probe is arranged in a hollow cylindrical structure, the probe comprises a shell, a hollow shaft and a lead cable, and the calibrating and testing method of the heating type temperature static sounding device is further disclosed. The invention belongs to the technical field of geotechnical engineering foundation investigation, and particularly relates to a method for measuring a soil body thermal conductivity coefficient based on a cylindrical axisymmetric probe, namely a semi-analytic model of soil model heat conduction, and provides a heating type temperature static sounding device with convenient operation, low cost and high accuracy, and a calibration and test method thereof.
Description
Technical Field
The invention belongs to the technical field of geotechnical engineering foundation investigation, and relates to an in-situ testing device capable of accurately and effectively obtaining basic engineering properties and thermodynamic properties of a soil body, in particular to a heating type temperature static sounding device and a calibration and test method thereof.
Background
Static sounding is that a feeler with sensor inside is pressed into the earth with uniform speed by quasi-static force, because of different soft and hard degree of various earth in stratum, the resistance of the feeler is naturally different, the sensor on the feeler inputs the penetration resistance with different size into a recording instrument through electric signal to record, then through qualitative relation and statistical correlation between the penetration resistance and the engineering geological characteristics of the earth, the engineering geological exploration purposes such as obtaining soil layer profile, providing shallow foundation bearing capacity, selecting pile end bearing layer and estimating single pile bearing capacity are realized. On the basis, the temperature static sounding is that a heating resistor and a temperature sensor are arranged in a probe, and by utilizing the advantages of rapidness, convenience and accuracy, the thermophysical property parameters are deduced by measuring the temperature change while the mechanical property of the stratum is detected. Accurate acquisition of the thermal physical property parameters of the rock-soil mass is a prerequisite condition for the reasonability of calculation of the underground engineering temperature field, but the existing thermal physical property testing methods have the defects that: the indoor experimental method is convenient and quick, has low test cost, but has limited test precision; the rock-soil thermal response test can accurately reflect the geological conditions of a construction site, and can obtain more accurate soil average thermal conductivity coefficient, drilling thermal resistance and the like, but the rock-soil thermal response test cannot obtain the thermophysical parameters of the rock-soil body at the specified depth.
Disclosure of Invention
Aiming at the situation, in order to overcome the current technical defects, the invention provides a heating type temperature static sounding device which is convenient to operate, low in cost and high in accuracy and a calibration and test method thereof based on a method for measuring the thermal conductivity coefficient of a soil body by a cylindrical axisymmetric probe, namely a semi-analytic model of soil model heat conduction.
The technical scheme adopted by the invention is as follows: the invention relates to a heating type temperature static sounding device, which comprises a testing device, a static sounding instrument and a data acquisition and control device, wherein the testing device and the data acquisition and control device are connected through a lead; the testing device comprises a probe rod and a probe, the probe and the probe rod are connected through threads, the length of the probe rod can be adjusted according to testing requirements, the probe rod is arranged on the static penetrometer, a lead is arranged in the probe rod, the probe is arranged in a hollow cylindrical structure, the probe comprises a shell, a hollow shaft and a lead cable, the shell is arranged outside the hollow shaft, the lead cable is arranged on the shell, a heating module and a temperature sensor are arranged in the hollow shaft of the probe, the temperature sensor is used for observing a temperature response curve in the heating and cooling processes, backfill materials are filled between the heating module and the hollow shaft, used for heat insulation, the line of the heating module is drawn out through the hollow shaft to be made into an integrated line, the probe rod is provided with an integrated circuit connecting interface, and the integrated circuit is connected with the integrated circuit connecting interface of the probe rod through a lead; the data acquisition and control device comprises a direct current stabilized voltage power supply, the direct current stabilized voltage power supply is connected with the heating module through a lead inside the probe rod, and the direct current stabilized voltage power supply is connected with the temperature sensor through a lead inside the probe rod.
Furthermore, the temperature sensors are provided with three groups, namely three temperature measuring channels and one heating channel are arranged in the probe, so that the analysis of heat transmission in the heating module during heating and heat dissipation is facilitated.
Furthermore, the probe is connected with six wiring ports, and the six wiring ports are respectively connected with the channels where the three temperature sensors are located.
Further, the backfill material is powdered polytetrafluoroethylene.
Further, the shell is composed of an insulating pipe and a metal pipe interval.
Further, the heat insulation pipe is made of plastic, and the metal pipe is made of nickel-chromium alloy material with good heat conductivity.
Furthermore, the heating module adopts a constant power heating method, the upper heating limit of the heating module is 80 ℃, and the upper heating limit is set by considering the actual engineering condition and the actual condition of the probe;
furthermore, the data acquisition and control device further comprises a static probing microcomputer and a heating type temperature static probing tester, and the data acquisition and control device, the heating module and the temperature sensor are connected through leads.
A calibration and test method of a heating type temperature static sounding device specifically comprises the following steps:
step 3, starting the static penetrometer, and driving the probe into the soil body under the action of the static penetrometer;
and 4, after the probe is driven into a specified depth, turning on a heating switch, controlling a heating module to work, heating the probe by the heating module and keeping the probe at a set temperature so as to obtain a soil body temperature response curve when the probe is heated to a certain temperature, turning off the heating switch, and analyzing the heat dissipation response curve through a static exploration microcomputer and a heating type temperature static cone penetration tester.
The invention with the structure has the following beneficial effects: the invention relates to a heating type temperature static sounding device and a calibration and test method thereof.A heating type temperature static sounding probe provided based on a cylindrical axisymmetric probe, namely a semi-analytic model of soil model heat conduction and a PSO data interpretation theory can quickly and accurately obtain a temperature response curve of a tested soil body in the heating process of the probe indoors, and a new indoor test method for obtaining the thermal conductivity coefficient of the soil body to be tested is obtained based on the probe; compared with in-situ test, the test range is wide, and one soil body parameter can be changed at will, so that the parameter influence can be analyzed accurately; the pressurization environment is simulated, the thermal physical parameters at any soil depth can be tested, the problem of low testing precision of an indoor test is solved, and the testing method is simple to operate and saves cost.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a probe of a heating type temperature static cone penetration test device and a calibration and test method thereof according to the present invention;
FIG. 2 is a schematic structural diagram of a probe housing of a heating type static cone penetration testing device and a calibration and test method thereof according to the present invention;
FIG. 3 is a schematic cross-sectional view of a probe of the heating type static cone penetration testing device and the calibration and testing method thereof according to the present invention;
FIG. 4 is a probe calibration curve diagram of the heating type temperature static sounding device and the calibration and test method thereof.
The device comprises a probe 1, a probe 2, a shell 3, a hollow shaft 4, a lead cable 5, a heating module 6, a temperature sensor 7, a heat insulation pipe 8 and a metal pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in fig. 1 to 4, the technical scheme adopted by the invention is as follows: the invention relates to a heating type temperature static sounding device, which comprises a testing device, a static sounding instrument and a data acquisition and control device, wherein the testing device and the data acquisition and control device are connected through a lead; the testing device comprises a probe rod and a probe 1, wherein the probe 1 is connected with the probe rod through threads, the length of the probe rod can be adjusted according to testing requirements, the probe rod is arranged on a static penetrometer, a lead is arranged in the probe rod, the probe 1 is of a hollow cylindrical structure, the probe 1 comprises a shell 2, a hollow shaft 3 and a lead cable 4, the shell 2 is arranged outside the hollow shaft 3, the lead cable 4 is arranged on the shell 2, a heating module 5 and a temperature sensor 6 are arranged in the hollow shaft 3 of the probe 1, the temperature sensor 6 is used for observing a temperature response curve in heating and cooling processes, a backfill material is filled between the heating module 5 and the hollow shaft 3 and is used for playing a role in heat insulation, a circuit of the heating module 5 is pulled out through the hollow shaft 3 to form an integrated circuit, and an integrated circuit connecting interface is arranged on the probe rod, the integrated circuit is connected with the integrated circuit connecting interface of the probe rod through a lead; the data acquisition and control device comprises a direct current stabilized voltage power supply, the direct current stabilized voltage power supply is connected with the heating module 5 through a lead inside the probe rod, and the direct current stabilized voltage power supply is connected with the temperature sensor 6 through a lead inside the probe rod.
The temperature sensors 6 are provided with three groups, namely three temperature measuring channels and one heating channel are arranged in the probe 1, so that the analysis of heat transmission in the heating module 5 during heating and heat dissipation is facilitated.
The probe 1 is connected with six wiring ports, and the six wiring ports are respectively connected with channels where the three temperature sensors 6 are located.
The backfill material is powdered polytetrafluoroethylene.
The shell 2 is composed of an insulating pipe 7 and a metal pipe 8 at intervals.
The heat insulation pipe 7 is made of plastic.
The metal pipe 8 is made of a nickel-chromium alloy material with good thermal conductivity.
The heating module 5 adopts a constant power heating method, the upper heating limit of the heating module 5 is 80 ℃, and the upper heating limit is set by considering the actual engineering condition and the actual condition of the probe 1;
the data acquisition and control device further comprises a static probing microcomputer and a heating type temperature static probing tester, and the data acquisition and control device, the heating module 5 and the temperature sensor 6 are connected through leads.
A calibration and test method of a heating type temperature static sounding device specifically comprises the following steps:
step 3, starting the static penetrometer, and driving the probe 1 into the soil body under the action of the static penetrometer;
and 4, after the probe 1 is driven into a specified depth, a heating switch is turned on, the heating module 5 is controlled to work, the heating module 5 heats and keeps the probe 1 at a set temperature, so that a soil body temperature response curve when the probe is heated to a certain temperature is obtained, then the heating switch is turned off, and the heat dissipation response curve is analyzed through a static probing microcomputer and a heating type temperature static cone penetration tester.
Table 1 shows a probe calibration record table and a calibration curve chart.
TABLE 1
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A heating type temperature static sounding device is characterized by comprising a testing device, a static sounding instrument and a data acquisition and control device, wherein the testing device and the data acquisition and control device are connected through a lead, and the testing device is arranged on the static sounding instrument; the testing device comprises a probe rod and a probe, wherein the probe rod is connected with the probe rod through threads, the probe rod is arranged on a static penetrometer, a lead is arranged inside the probe rod, the probe is arranged in a hollow cylindrical structure, the probe comprises a shell, a hollow shaft and a lead cable, the shell is arranged outside the hollow shaft, the lead cable is arranged on the shell, a heating module and a temperature sensor are arranged in the hollow shaft of the probe, backfill materials are filled between the heating module and the hollow shaft, a circuit of the heating module is pulled out through the hollow shaft to form an integrated circuit, an integrated circuit connecting interface is arranged on the probe rod, and the integrated circuit is connected with the integrated circuit connecting interface of the probe rod through the lead; the data acquisition and control device comprises a direct current stabilized voltage power supply, the direct current stabilized voltage power supply is connected with the heating module through a lead inside the probe rod, and the direct current stabilized voltage power supply is connected with the temperature sensor through a lead inside the probe rod.
2. A heated thermostatic cone penetration device according to claim 1 wherein there are three sets of temperature sensors.
3. A heated static cone penetration device according to claim 2 wherein said probe has six connection ports, said six connection ports being connected to respective channels in which said three temperature sensors are located.
4. A heated static cone penetration device according to claim 1 wherein the backfill material is powdered ptfe.
5. A heated static cone penetration device according to claim 1 wherein said housing is formed by a thermally insulated tube and a metal tube spacer.
6. The device of claim 5, wherein the heat insulating tube is made of plastic, and the metal tube is made of nickel-chromium alloy with good thermal conductivity.
7. The heating type static cone penetration device as claimed in claim 1, wherein said heating module adopts a constant power heating method, and the heating upper limit of said heating module is 80 ℃.
8. The heating type static cone penetration device according to claim 1, wherein the data acquisition and control device further comprises a static cone microcomputer and a heating type static cone penetration tester, and the data acquisition and control device, the heating module and the temperature sensor are connected through wires.
9. A calibration and test method of a heating type temperature static sounding device is characterized by comprising the following steps:
step 1, preparing a soil body of a required test type and instrument equipment required for calibration and test;
step 2, mounting the probe on the probe rod, mounting a testing device consisting of the probe and the probe rod on a static penetrometer, connecting the testing device with a static penetrometer microcomputer and a heating type temperature static penetrometer tester through a lead, and debugging the tester;
step 3, starting the static penetrometer, and driving the probe into the soil body under the action of the static penetrometer;
and 4, after the probe is driven into a specified depth, turning on a heating switch, controlling a heating module to work, heating the probe by the heating module and keeping the probe at a set temperature so as to obtain a soil body temperature response curve when the probe is heated to a certain temperature, turning off the heating switch, and analyzing the heat dissipation response curve through a static exploration microcomputer and a heating type temperature static cone penetration tester.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011165625.5A CN112485291A (en) | 2020-10-27 | 2020-10-27 | Heating type temperature static sounding device and calibration and test method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011165625.5A CN112485291A (en) | 2020-10-27 | 2020-10-27 | Heating type temperature static sounding device and calibration and test method thereof |
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| CN112485291A true CN112485291A (en) | 2021-03-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113529680A (en) * | 2021-05-10 | 2021-10-22 | 中国矿业大学 | Energy pile heat exchange tube optimization design method based on temperature static sounding |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201876432U (en) * | 2010-11-26 | 2011-06-22 | 东南大学 | Energy environmental static sounding probe capable of detecting soil heat conduction coefficient |
| CN102175713A (en) * | 2010-12-25 | 2011-09-07 | 浙江理工大学 | Method and device for detecting thermal physical parameters of rock through press-in in-site delamination |
| CN202119750U (en) * | 2011-05-20 | 2012-01-18 | 江苏大学 | Soil profile moisture measuring device |
| CN203024884U (en) * | 2012-12-23 | 2013-06-26 | 哈尔滨师范大学 | Soil temperature detection device |
| CN106017567A (en) * | 2016-07-06 | 2016-10-12 | 江苏中农物联网科技有限公司 | Soil humiture sensor for large-farmland plantation |
| CN106093109A (en) * | 2016-06-02 | 2016-11-09 | 东南大学 | Conduction of heat CPTU pops one's head in |
| CN109884115A (en) * | 2019-03-15 | 2019-06-14 | 东南大学 | The measuring method of soil body horizontal thermal conductivity factor in situ |
-
2020
- 2020-10-27 CN CN202011165625.5A patent/CN112485291A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201876432U (en) * | 2010-11-26 | 2011-06-22 | 东南大学 | Energy environmental static sounding probe capable of detecting soil heat conduction coefficient |
| CN102175713A (en) * | 2010-12-25 | 2011-09-07 | 浙江理工大学 | Method and device for detecting thermal physical parameters of rock through press-in in-site delamination |
| CN202119750U (en) * | 2011-05-20 | 2012-01-18 | 江苏大学 | Soil profile moisture measuring device |
| CN203024884U (en) * | 2012-12-23 | 2013-06-26 | 哈尔滨师范大学 | Soil temperature detection device |
| CN106093109A (en) * | 2016-06-02 | 2016-11-09 | 东南大学 | Conduction of heat CPTU pops one's head in |
| CN106017567A (en) * | 2016-07-06 | 2016-10-12 | 江苏中农物联网科技有限公司 | Soil humiture sensor for large-farmland plantation |
| CN109884115A (en) * | 2019-03-15 | 2019-06-14 | 东南大学 | The measuring method of soil body horizontal thermal conductivity factor in situ |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113529680A (en) * | 2021-05-10 | 2021-10-22 | 中国矿业大学 | Energy pile heat exchange tube optimization design method based on temperature static sounding |
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Application publication date: 20210312 |