CN104280151A - Temperature testing system for high-pressure high-humidity underground rock-soil in long distance mode and connecting method thereof - Google Patents
Temperature testing system for high-pressure high-humidity underground rock-soil in long distance mode and connecting method thereof Download PDFInfo
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- CN104280151A CN104280151A CN201410554564.XA CN201410554564A CN104280151A CN 104280151 A CN104280151 A CN 104280151A CN 201410554564 A CN201410554564 A CN 201410554564A CN 104280151 A CN104280151 A CN 104280151A
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Abstract
The invention discloses a temperature testing system for high-pressure high-humidity underground rock-soil in a long distance mode and a connecting method of the system. The system is characterized in that a platinum resistor is connected with a signal transmission cable; an alternating-direct current converter provides 24V direct-current working voltage for a temperature collection module; prolonged wires of the platinum resistor are collected to the temperature collection module, and resistor signals are converted into temperature signals through an AD converter and transmitted to a computer to be displayed and stored. The method comprises the steps of sealing the platinum resistor, sealing the connecting position of the platinum resistor and the signal transmission cable, and protecting the signal transmission cable. According to the system and method, long-distance testing can be carried out on the rock-soil temperature under the high-pressure high-humidity environment; the testing result is accurate; due to parallel connection, when a certain testing point fails, testing results of other testing points are not affected; the experiment proves that the testing time can reach five years or more.
Description
Technical field
The present invention relates to field of temperature measurement, particularly relate to a kind of long distance high-voltage high humidity underground ground Research on Automatic Measuring System of Temperature and attaching method thereof.
Background technology
At present, the sensor that probe temperature can adopt has alcohol thermometer, mercury thermometer, gas thermometer, resistance thermometer, thermocouple thermometer, radiation thermometer, flash ranging thermometer, bimetallic system cell etc.Radiation thermometer and flash ranging thermometer are non-contact type thermodetector, are obviously not suitable for long range measurements.Although alcohol thermometer, mercury thermometer, gas thermometer, bimetallic system cell are direct contact types, be also not suitable for long range measurements.
Resistance thermometer and thermocouple thermometer can test remote object temperature.In actual application, thermopair line is comparatively thin, is easy to fracture in the procedures of establishment of subsurface temperature measuring point.Now commercially there is a kind of method being sealed in cable and testing ground temperature that is together in series by thermistor, good waterproof, resistance to compression effect can be played, be also not easy fracture.But this method is once certain point goes wrong, and institute's temperature a little does not all measure, and has irrecoverability.
Adopt proof armored platinum resistor probe temperature mode, waterproof, measuring body problem can be solved well, and anticorrosive.Key is that measuring point is in parallel, and some measuring points go wrong, and do not affect the measurement of other measuring points.But the connecting line of platinum resistance is shorter, need to adopt signal wire to be connected in buildings, method adopts three-core shielding line to be connected with the platinum resistance of two connecting lines the most accurately.And under tie point is in high pressure super-humid conditions throughout the year, is easy to leak, causes temperature test inaccurate.
Summary of the invention
The invention provides a kind of long distance high-voltage high humidity underground ground Research on Automatic Measuring System of Temperature and attaching method thereof, present invention achieves underground ground temperature and monitor throughout the year, do not rupture, water-tight, ensure accurate testing, reliable and stable, described below:
A kind of long distance high-voltage high humidity underground ground Research on Automatic Measuring System of Temperature, comprising: platinum resistance, described platinum resistance electrical connection signal transmission cable, and described system also comprises: temperature transition system,
Described temperature transition system comprises temperature collect module, AC/DC changeover switch, AD converter and computing machine,
Described AC/DC changeover switch provides the direct-current working volts of 24V for described temperature collect module, the extension lead of described platinum resistance is pooled on described temperature collect module, resistance signal converts temperature signal to by described AD converter, is sent to and described computing machine shows and stores.
Described platinum resistance is: Pt1000 proof armored platinum resistor.Described signal transmission cable adopts three-core shielding line.
A method of attachment for long distance high-voltage high humidity underground ground Research on Automatic Measuring System of Temperature, said method comprising the steps of:
(1) described platinum resistance is sealed;
Employing PVC insulating tape, heat-shrink tube seal, then seal with high pressure waterproof insulation tape successively;
(2) junction of described platinum resistance and signal transmission cable is sealed;
Two lines of described platinum resistance adopt solder stick to weld with the joint of described signal transmission cable; Then insulating tape is adopted to wrap junction respectively; The reusable heat draw is by junction and insulating tape sealing; High pressure waterproof insulation tape is wrapped with again outside heat-shrink tube; Finally seal with insulating tape;
(3) to the protection of described signal transmission cable;
Described signal transmission cable is pierced in PE pipe, the bottom PE tube head sealing of described PE pipe; In each position of test that needs, a threeway is installed, adopts rubber plug to clog described threeway, described platinum resistance is exposed at through described rubber plug and contacts with ground beyond the Great Wall; The contact position of described rubber plug and described threeway, and described platinum resistance seals through described rubber plug place fluid sealant, then use adhesive tape tighten, finally with the sealing of PVC insulating tape, prevent into water.
The beneficial effect of technical scheme provided by the invention is: the present invention can carry out long distance test to the ground temperature under high pressure high humidity environment; Test result is accurate; And after expendable problem appears in certain measuring point, owing to being be connected in parallel, do not affect the test result of other measuring points, thus realize accurately understanding underground ground temperature variation, improve the object of earth source heat pump operational efficiency; Through experimental verification, the test duration can reach more than 5 years.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of long distance high-voltage high humidity underground ground Research on Automatic Measuring System of Temperature;
Fig. 2 is the structural representation of temperature transition system.
In accompanying drawing, the list of parts representated by each label is as follows:
1: platinum resistance; 2: signal transmission cable;
3: temperature transition system; 4: temperature collect module;
5: AC/DC changeover switch; 6:AD converter;
7: computing machine; 8: tie point;
9:PE manages; 10:PE tube head;
11: threeway; 12: rubber plug.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below embodiment of the present invention is described further in detail.
See Fig. 1, a kind of long distance high-voltage high humidity underground ground Research on Automatic Measuring System of Temperature mainly comprises: Pt1000 proof armored platinum resistor 1, signal transmission cable (three-core shielding line) 2, temperature transition system 3.
Wherein, the main composition of temperature transition system 3 as shown in Figure 2, specifically comprises temperature collect module 4, AC/DC changeover switch 5, AD converter 6, computing machine 7.
AC/DC changeover switch 5 provides the direct-current working volts of 24V for temperature collect module 4, the extension lead of Pt1000 proof armored platinum resistor 1 is pooled on temperature collect module 4 by temperature transition system 3, resistance signal converts temperature signal to by AD converter 6, is sent to and computing machine 7 shows and stores.
In order to realize the long-term test purpose of high pressure high humidity underground ground temperature, signal transmission cable 2 adopts three-core shielding line, and because the extension lead of Pt1000 proof armored platinum resistor 1 is long, the resistance value that wire itself has can affect the measuring accuracy of test target.This method adopts balanced bridge formula three-wire system connected mode to eliminate the impact of extension lead on test target.
During specific implementation, Pt1000 proof armored platinum resistor 1 can also be the platinum resistance of other models, and the embodiment of the present invention is not restricted this.
The method of attachment (the present invention creates part) of the tie point 8 of Pt1000 proof armored platinum resistor 1 and signal transmission cable 2 comprises following three parts:
The sealing of 101:Pt1000 proof armored platinum resistor 1;
Adopt the sealing of PVC insulating tape, then with heat-shrink tube sealing, then with the sealing of high pressure waterproof insulation tape, guarantee Pt1000 proof armored platinum resistor for a long time not exposed in underground, do not corrode.
102:Pt1000 proof armored platinum resistor 1 seals with the junction of signal transmission cable (three-core shielding line) 2;
Because Pt1000 proof armored platinum resistor 1 self is with two connecting lines, one connects of three-core shielding line 2, and other two lines of another root connecting line and three-core shielding line 2 connect together.Depart from work progress for avoiding Pt1000 proof armored platinum resistor 1 and signal transmission cable (three-core shielding line) 2, also in order to ensure the accuracy of testing, solder stick is adopted to weld at two lines of Pt1000 proof armored platinum resistor 1 with the joint of signal transmission cable 2 respectively; Then insulating tape is adopted to wrap junction respectively; The reusable heat draw is by junction and insulating tape sealing; High pressure waterproof insulation tape is wrapped with again outside heat-shrink tube; Finally seal with insulating tape.
103: the protection of signal transmission cable (three-core shielding line) 2.
Being pulled off in work progress for preventing signal transmission cable, destroying or being immersed in water for a long time and affect thermometric effect, pierced into by cable in PE pipe 9, the bottom PE tube head 10 of PE pipe 9 seals.In each position of test that needs, a threeway 11 is installed, adopts rubber plug 12 to clog threeway 11, PT1000 proof armored platinum resistor 1 is exposed at through rubber plug 12 and contacts with ground beyond the Great Wall.The contact position of rubber plug 12 and threeway 11, and PT1000 proof armored platinum resistor 1 seals through rubber plug 12 place fluid sealant, then use adhesive tape tighten, finally with the sealing of PVC insulating tape, prevent into water.
The ground temperature that this method is applied to earth source heat pump is tested for a long time.In earth source heat pump work progress, prepare the PE pipe 9 of reasonable length, rubber plug 12, signal transmission cable 2, PT1000 proof armored platinum resistor 1, common insulating tape, High-Voltage Insulation adhesive tape, heat-shrink tube etc. as required in advance.As required PT1000 proof armored platinum resistor 1 is connected in indoor with signal transmission cable 2, welding, waterproof be complete.Also can implement at the scene, but need to prepare power lead in advance, operate at the scene.After preliminary work is finished, PT1000 proof armored platinum resistor 1 pierces in PE pipe 9 together with signal transmission cable 2.With in heat exchanger tube lower going-into-well, can test; Also can dig a well separately, PE pipe 9 is placed into the position needing test, then backfill.Through the ground temperature return of 2-3 days, namely can accurately the temperature signal of each measuring point be sent in machine room or buildings, be connected with temperature collect module 4, convert resistance signal to temperature signal, through AD converter 5 signal transmission shown to computing machine 7 and store.
The embodiment of the present invention is specifically described test philosophy and the construction process of ground temperature by application example.In actual applications, can determine measuring point quantity and position as required, this description should not be construed as limitation of the present invention.
The embodiment of the present invention is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a long distance high-voltage high humidity underground ground Research on Automatic Measuring System of Temperature, comprising: platinum resistance, described platinum resistance connection signal transmission cable, and it is characterized in that, described system also comprises: temperature transition system,
Described temperature transition system comprises temperature collect module, AC/DC changeover switch, AD converter and computing machine,
Described AC/DC changeover switch provides the direct-current working volts of 24V for described temperature collect module, the extension lead of described platinum resistance is pooled on described temperature collect module, resistance signal converts temperature signal to by described AD converter, is sent to and described computing machine shows and stores.
2. one according to claim 1 long distance high-voltage high humidity underground ground Research on Automatic Measuring System of Temperature, it is characterized in that, described platinum resistance is: Pt1000 proof armored platinum resistor.
3. one according to claim 1 long distance high-voltage high humidity underground ground Research on Automatic Measuring System of Temperature, is characterized in that, described signal transmission cable adopts three-core shielding line.
4., for a method of attachment for a kind of long distance high-voltage high humidity underground ground Research on Automatic Measuring System of Temperature described in claim arbitrary in claim 1-3, it is characterized in that, said method comprising the steps of:
(1) described platinum resistance is sealed;
Employing PVC insulating tape, heat-shrink tube seal, then seal with high pressure waterproof insulation tape successively;
(2) junction of described platinum resistance and signal transmission cable is sealed;
Two lines of described platinum resistance adopt solder stick to weld with the joint of described signal transmission cable; Then insulating tape is adopted to wrap junction respectively; The reusable heat draw is by junction and insulating tape sealing; High pressure waterproof insulation tape is wrapped with again outside heat-shrink tube; Finally seal with insulating tape;
(3) to the protection of described signal transmission cable;
Described signal transmission cable is pierced in PE pipe, the bottom PE tube head sealing of described PE pipe; In each position of test that needs, a threeway is installed, adopts rubber plug to clog described threeway, described platinum resistance is exposed at through described rubber plug and contacts with ground beyond the Great Wall; The contact position of described rubber plug and described threeway, and described platinum resistance seals through described rubber plug place fluid sealant, then use adhesive tape tighten, finally with the sealing of PVC insulating tape, prevent into water.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410554564.XA CN104280151B (en) | 2014-10-17 | 2014-10-17 | Temperature testing system for high-pressure high-humidity underground rock-soil in long distance mode and connecting method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410554564.XA CN104280151B (en) | 2014-10-17 | 2014-10-17 | Temperature testing system for high-pressure high-humidity underground rock-soil in long distance mode and connecting method thereof |
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| CN104280151A true CN104280151A (en) | 2015-01-14 |
| CN104280151B CN104280151B (en) | 2017-03-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748872A (en) * | 2015-04-15 | 2015-07-01 | 久茂自动化(大连)有限公司 | Locomotive head sealing temperature-measurement device |
| CN110068402A (en) * | 2019-04-28 | 2019-07-30 | 天能电池集团（安徽）有限公司 | A kind of servo-actuated temperature recording unit of high-precision lead plaster |
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| US5346307A (en) * | 1993-06-03 | 1994-09-13 | Regents Of The University Of California | Using electrical resistance tomography to map subsurface temperatures |
| CN201983878U (en) * | 2011-01-07 | 2011-09-21 | 李晋玲 | Monitoring device of soil temperature |
| CN202101774U (en) * | 2011-05-13 | 2012-01-04 | 上海市地矿工程勘察院 | Underground temperature field monitoring system for ground source heat pump system |
| CN102564618B (en) * | 2012-01-16 | 2014-01-15 | 中国工程物理研究院化工材料研究所 | Temperature sensor and sealing and installation method thereof |
| CN202582753U (en) * | 2012-02-07 | 2012-12-05 | 上海理工大学 | Rock-soil temperature detection system for ground source heat pump |
| CN103698039A (en) * | 2013-12-24 | 2014-04-02 | 甘肃土木工程科学研究院 | Test method of underground temperature field of ground source heat pump |
| CN204188295U (en) * | 2014-10-17 | 2015-03-04 | 天津大学 | A kind of long distance high-voltage high humidity underground ground Research on Automatic Measuring System of Temperature |
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2014
- 2014-10-17 CN CN201410554564.XA patent/CN104280151B/en not_active Expired - Fee Related
Non-Patent Citations (1)
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| 周志华 等: "垂直埋管式地源热泵土壤温度分布研究", 《太阳能学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748872A (en) * | 2015-04-15 | 2015-07-01 | 久茂自动化(大连)有限公司 | Locomotive head sealing temperature-measurement device |
| CN110068402A (en) * | 2019-04-28 | 2019-07-30 | 天能电池集团（安徽）有限公司 | A kind of servo-actuated temperature recording unit of high-precision lead plaster |
| CN110068402B (en) * | 2019-04-28 | 2020-10-30 | 天能电池集团（安徽）有限公司 | Lead plaster follow-up temperature recording device |
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| CN104280151B (en) | 2017-03-22 |
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