CN105890673B - A kind of online wide range dynamic water table-temperature measurement system of underground heat well - Google Patents

A kind of online wide range dynamic water table-temperature measurement system of underground heat well Download PDF

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Publication number
CN105890673B
CN105890673B CN201610487988.8A CN201610487988A CN105890673B CN 105890673 B CN105890673 B CN 105890673B CN 201610487988 A CN201610487988 A CN 201610487988A CN 105890673 B CN105890673 B CN 105890673B
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bit triplet
solenoid valve
triplet solenoid
valve
underground heat
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CN105890673A (en
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郭澎
张福海
刘永
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Nankai University
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Nankai University
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING 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
    • G01D21/00Measuring or testing not otherwise provided for
    • G01D21/02Measuring two or more variables by means not covered by a single other subclass
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00Survey of boreholes or wells
    • E21B47/04Measuring depth or liquid level
    • E21B47/047Liquid level
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00Survey of boreholes or wells
    • E21B47/06Measuring temperature or pressure
    • E21B47/07Temperature

Abstract

The invention discloses a kind of online wide range dynamic water table temperature measurement system of underground heat well, including crank connecting link piston air pump, the 1st the 4th two-bit triplet solenoid valve, the 1st the 2nd one two three-way electromagnetic valves, air accumulator, the 1st the 2nd pressure difference sensing transmitter, the controller with display screen, high temperature resistant air guide signal control line cable, temperature sensor, temperature transmitter and check valve, high temperature resistant air guide signal control line cable and temperature sensor are placed in the test tube of geothermal well;Temperature sensor, signal wire, temperature transmitter and the controller of high temperature resistant air guide signal control line cable are sequentially connected;The automatically controlled end and the signal end of the 1st the 2nd pressure difference sensing transmitter of 1st the 4th two-bit triplet solenoid valve and the 1st the 2nd one two three-way electromagnetic valve and the startup control terminal of crank connecting link piston air pump are connected with the interface end of controller respectively.Using pressurize and pumping amalgamation mode measure, the system accuracy is very high, corrosion-and high-temp-resistant, durable, anti-vibration, it is anti-interference, can long time stability operation.

Description

A kind of online wide range dynamic water table-temperature measurement system of underground heat well
Technical field
The present invention relates to GEOTHERMAL WATER well measurements field, more particularly to a kind of online wide range dynamic water table of underground heat well- Temperature measurement system.
Background technology
The meaning of underground heat well deep dynamic liquid level-temperature survey online is the normal work for protecting submersible pump, avoids Submersible pump is damaged because of empty take out, it is often more important that the liquid level and temperature data of long term monitoring underground heat well, are underground heat hydro-thermal Recharge balance after utilizing provides reliable dynamic monitoring data, to prevent surface subsidence, protects water conservancy project geological environment.
The tank gage of well is surveyed now generally using artificial or servomotor span, it is impossible to reaches the mesh of on-line measurement 's;Using the level gauging of the principle according to silicon pressure sensor because of the bending of its long range atmosphere conduit so that measurement 100- 200 meters of long ranges, the change of 100 meters wide of dynamic liquid level can not achieve, even if realizing, transducer wire will because of the diameter of gas-guide tube Ask, transducer wire diameter is very big, and because the temperature of GEOTHERMAL WATER is high, online long-term measurement is using the principle according to silicon pressure sensor Level gauging, to sensing transducer use environment (high temperature) technical requirements, encapsulating material (titanium alloy) and encapsulation technology (high temperature Waterproof) requirement is all very harsh, while whole pressure transmitter must be in the test tube (a diameter of 1 inch) of the underground heat well of standard Middle input is placed, therefore the diameter of whole pressure sensing transmitter is less than 15mm.Furtherly, due to pressure sensing pick-up Device is placed in the high high-temperature geothermal water of salinity for a long time, and the shell of pressure sensing transmitter fouling and blocks measurement mouth quickly, So that pressure sensing transmitter operational failure.
Using fiber grating pressure and temperature measuring method, because of the limitation of water-disintegrable and heatproof of its fibre cladding, (85 take the photograph Family name's degree), simultaneously as the cost problem of wavelengt demodulator, therefore water level-temperature of online underground heat well can not be suitable for Measurement.
Using capacity water level measuring system (cable that two parallel radiant crosslinked polyethylenes encapsulate) although resistance to underground heat Aqueous corrosion and high temperature resistant, but interference and the depth sounding of 200 meters of long ranges due to the pump condition that draws water, measurement data is extremely unstable, deep Dynamic GEOTHERMAL WATER Well Water Level measurement can not carry out at all.
The accurate range of bubbler gage is most 40 meters long, its measured value is because Media density and temperature influence are very big, therefore discomfort The deep dynamic water table of underground heat well is answered to measure.
The content of the invention
A kind of the shortcomings that the technical problem to be solved in the present invention is above-mentioned various technology path measurements are overcome, there is provided resistance to height The online wide range dynamic of the underground heat well of warm, corrosion-resistant, anti-vibration and interference, high certainty of measurement and energy long time stability operation Water level-temperature measurement system.
For this reason, technical scheme is as follows:
A kind of online wide range dynamic water table-temperature measurement system of underground heat well, including crank connecting link piston air pump, 1- 4th two-bit triplet solenoid valve, the 2nd one two three-way electromagnetic valves of 1-, air accumulator, the 2nd pressure difference sensing transmitters of 1-, with display Controller, high temperature resistant air guide signal control line cable, the 4th check valve of temperature sensor, temperature transmitter and 1- of screen,
The high temperature resistant air guide signal control line cable and temperature sensor are placed on the survey of underground heat wellAmountGuan Zhong;
The temperature sensor, high temperature resistant air guide signal control line cable signal wire, temperature transmitter and controller successively It is connected;
Automatically controlled end and the 1- of the 4th two-bit triplet solenoid valves of 1- and the 2nd one two three-way electromagnetic valves of 1- The signal end of 2nd pressure difference sensing transmitter and the startup control terminal of crank connecting link the piston air pump interface with the controller respectively End is connected;Controller is controlled by the tank connected with gas storage the 1st, the 2nd one two-way valve.
It is tightly connected below with gas-guide tube:The air outlet B1 and the 1st two-bit triplet of the crank connecting link piston air pump C2 ports in solenoid valve are connected, the A3 ports in the A2 ports in the 1st two-bit triplet solenoid valve and the 2nd two-bit triplet solenoid valve It is connected, the air inlet port A1 of crank connecting link piston air pump is connected with the C4 ports in the 3rd two-bit triplet solenoid valve, the 3rd two three The B4 ports of three-way electromagnetic valve are connected with the B3 ports of the 2nd two-bit triplet solenoid valve;The B2 ends of the 1st two-bit triplet solenoid valve Mouth, the A4 ports of the 3rd two-bit triplet solenoid valve are connected with the 1st, the 4th check valve respectively, its direction is to receive air direction, and the 2nd The C3 ports of two-bit triplet solenoid valve (3) are connected with a port A5 of the 1st one two three-way electromagnetic valves, the 1st one two energization magnetic Another port B5 of valve is connected with a port A6 of air accumulator, another port B6 of air accumulator and the 2nd one two energization The a port A7 of magnet valve is connected, another port B7 of the 2nd one two three-way electromagnetic valve and one of the 4th two-bit triplet solenoid valve Port A8 is connected, the middle air guide of another port C8 and high temperature resistant air guide signal control line cable of the 4th two-bit triplet solenoid valve Pipe is connected;The a port A9 of the 1st pressure difference sensing transmitter is connected with another port C6 of air accumulator, and the 1st pressure difference passes Another port B9 of sense transmitter leads directly to airspace by the 3rd check valve;One end of the 2nd pressure difference sensing transmitter Mouth A10 is connected with another port B8 of the 4th two-bit triplet solenoid valve, another port B10 of the 2nd pressure difference sensing transmitter leads to Cross the 4th check valve and lead directly to airspace.
Preferably, the range of the 1st pressure difference sensing transmitter exports for 0-1.4MPa, 0-5V;2nd pressure difference passes The range for feeling transmitter 10 exports for 0-500KPa, 0-5V.
The center of the high temperature resistant air guide signal control line cable is gas-guide tube, and the periphery of gas-guide tube is equipped with four signal lines.
Underwater penetration of the high temperature resistant air guide signal control line cable in underground heat well test tube is at least 80 meters.
Beneficial effects of the present invention are as follows:
Present system from overcome pressure, capacitance, conductance, thermal resistance, bubble, etc. various modes measure underground heat well wide range The purpose of technological deficiency existing for water level is set out, and has invented the online wide range Dynamic Water of underground heat well with real Practical significance Position-temperature measurement system, the zero point automatically calibrating of the system, is completely eliminated zero drift error, by temperature sensor, Can effective compensation liquid specific gravity be acted upon by temperature changes, it is therefore the system accuracy height, corrosion-and high-temp-resistant, anti-vibration, anti-dry Disturb, can long time stability operation, non-maintaining, its in-site installation is convenient, and operation is flexible, has filled up GEOTHERMAL WATER well performance monitoring system The blank of water level monitoring instrument in system.Because its manufacturing process is simple, therefore manufacture cost is low, cost-effective, can carry out extensively Using, meet territory terrestrial heat resources general census and GEOTHERMAL WATER well performance monitoring demand.
Brief description of the drawings
Fig. 1 is the pneumoelectric module and pneumatic diagram of measuring system of the present invention;
Fig. 2 is the electronic module and circuit diagram of measuring system of the present invention;
Fig. 3 is the pressure value curve of measurement of pressurizeing in the present invention;
Fig. 4 is the injection pressure pneumatic diagram of measurement of pressurizeing in the present invention;
Fig. 5 show the pressure measurement process for measurement of pressurizeing in the present invention;
Fig. 6 show the pumping process that measurement is evacuated in the present invention;
Fig. 7 show the pressure measurement process of pumping process in the present invention;
Fig. 8 is the pressure value curve that measurement is evacuated in the present invention.
Embodiment
Below in conjunction with the accompanying drawings to the present invention the online wide range dynamic water table-temperature measurement system of underground heat well composition and The course of work is described in detail.
As depicted in figs. 1 and 2, the online wide range dynamic water table-temperature measurement system of underground heat well of the invention includes:It is bent Handle connecting rod piston air pump 1, the 4th two-bit triplet solenoid valves 2,3,4,8 of 1-, the 2nd one two three-way electromagnetic valves 5,7 of 1-, air accumulator 6th, the 2nd pressure difference sensing transmitters 9,10 of 1-, the controller 11 with display screen, high temperature resistant air guide signal control line cable 12, temperature Spend the 4th check valve 15a-15d of sensor 13, temperature transmitter 14 and 1-.High temperature resistant air guide signal control line cable 12 and temperature Sensor 13 is placed in the test tube of underground heat well.
The range of 1st pressure difference sensing transmitter 9 exports for 0-1.4MPa, 0-5V;The range of 2nd pressure difference sensing transmitter 10 Exported for 0-500KPa, 0-5V.
The center of the high temperature resistant air guide signal control line cable 12 is gas-guide tube, and the periphery of gas-guide tube is equipped with four bars Line.High temperature resistant air guide signal control line 12 underwater penetration in underground heat well test tube of cable is at least 80 meters.
Referring to Fig. 1, in test system of the invention, the connection relation of air path part is as follows:
It is tightly connected below with gas-guide tube:In the air outlet B1 and two-bit triplet solenoid valve 2 of crank connecting link piston air pump 1 C2 ports be connected, the A2 ports in the 1st two-bit triplet solenoid valve 2 are connected with the A3 ports in two-bit triplet solenoid valve 3, crank The air inlet port A1 of connecting rod piston air pump 1 is connected with the C4 ports in two-bit triplet solenoid valve 4, the 3rd two-bit triplet solenoid valve 4 B4 ports are connected with the B3 ports of the 2nd two-bit triplet solenoid valve 3;
It is tightly connected below with gas-guide tube:The B2 ports of two-bit triplet solenoid valve 2, the A4 ports of two-bit triplet solenoid valve 4 Be connected respectively with the 1st, the 2nd check valve 15a, 15b, its direction to receive air direction, the C3 ports of two-bit triplet solenoid valve 3 with The a port A5 of one two three-way electromagnetic valve 5 is connected, another port B5 of two three-way electromagnetic valves 5 with one of air accumulator 6 Port A6 is connected, another port B6 of air accumulator 6 is connected with a port A7 of two three-way electromagnetic valves 7, one two energization Another port B7 of magnet valve 7 is connected with a port A8 of two-bit triplet solenoid valve 8, two-bit triplet solenoid valve 8 another The middle air guide seal of tube of port C8 and high temperature resistant air guide signal control line cable 12 is connected.
It is tightly connected below with gas-guide tube:The a port A9 of pressure difference sensing transmitter 9 and another port of air accumulator 6 C6 is connected, another port B9 of pressure difference sensing transmitter 9 leads directly to airspace by the 3rd check valve 15c.
It is tightly connected below with gas-guide tube:The a port A10 and the 4th two-bit triplet solenoid valve of pressure difference sensing transmitter 10 8 another port B8 is connected, another port B10 of pressure difference sensing transmitter 10 leads directly to air sky by the 4th check valve 15d Between.
Referring to Fig. 2, in test system of the invention, the connection relation of circuit part is as follows:
Wherein, temperature sensor 13, the signal wire of high temperature resistant air guide signal control line cable 12, temperature transmitter 14, carry The controller 11 of display screen is sequentially connected;
Wherein, the automatically controlled end W2 of startup control terminal W1, two-bit triplet solenoid valve 2 of crank connecting link piston air pump 1, two-bit triplet The automatically controlled end W3 of solenoid valve 3, the automatically controlled end W4 of two-bit triplet solenoid valve 4, two three-way electromagnetic valves, a 5 automatically controlled end W5, a two energization magnetic The automatically controlled end W7 of valve 7, the automatically controlled end W8 of two-bit triplet solenoid valve 8, the signal end X9 of differential pressure pickup transmitter 9, differential pressure pickup become Interface ends of the signal end X10 of device 10 respectively with the controller 11 with display screen is sent to be connected.
The course of work of above-mentioned measuring system is as follows:
High temperature resistant air guide signal control line cable 12 is put into underground heat well test tube, high temperature resistant air guide signal control line cable 12 Underwater penetration is at least 80 meters.
Referring to Fig. 4, under the control of controller 11, the A2 of the C2 and two-bit triplet solenoid valve 2 of two-bit triplet solenoid valve 2 are led Logical, the A3 of two-bit triplet solenoid valve 3 is turned on the C3 of two-bit triplet solenoid valve 3, the A4 and two-bit triplet of two-bit triplet solenoid valve 4 The C4 conductings of solenoid valve 4, the A5 of two three-way electromagnetic valves 5 are turned on the B5 of two three-way electromagnetic valves 5, two three-way electromagnetic valves 7 A7, B7 disconnect, cranking lever connecting rod piston air pump 1, compressed air stream passes sequentially through B1, C2, A2, A3, C3, A5, B5, A6, Air accumulator 6 forms plenum chamber.Referring to Fig. 5, controller 11 measures the pressure of air accumulator 6 by differential pressure pickup transmitter 9 in real time Power numerical value (subtracts an atmospheric pressure difference), when its value is 1.3MPa, under the control of controller 9, and locking crank connecting rod 1, two three-way electromagnetic valve 5 of piston air pump are closed, two three-way electromagnetic valves 7 turn on, and the A8 and C8 of two-bit triplet solenoid valve 8 are led Logical, compressed air is injected into GEOTHERMAL WATER well water in the gas-guide tube by high temperature resistant air guide signal control line cable 12.According to fluid Mechanics principle, when gas-guide tube emerges bubble to hot water, the pressure of air storage chamber 6 is more than hot water pressure, and only works as air water When exchange face is located at the air guide mouth of pipe, the pressure in air storage chamber 6 is just exactly equal to the hydrostatic pressure of the air guide mouth of pipe at this time, by continuous The change (pressure is slowly reduced with the time) of pressure in gas storage plenum chamber 6 is measured, controller 11 constantly samples high-pressure gas Indoor pressure value, can measure and join to aqueous vapor after air pump work is stopped and enter the pressure inside tracheae in this period Power.
Referring to Fig. 3, it is P to take its average value according to its change curve9, according toγ be GEOTHERMAL WATER density, P9For The pressure difference of atmospheric pressure is subtracted, therefore above-mentioned formula is to probe into air guide cable reality in underground heat well for what is measured with pressuring method Border underwater penetration value H1, unit mH2O (meter water column).
Referring to Fig. 6, when rapid decrease occurs for the pressure value that controller 11 is measured in real time by differential pressure pickup transmitter 9 When, controller 11 instruction under, the port C2 of two-bit triplet solenoid valve 2 is turned on B2, the port C3 of two-bit triplet solenoid valve 3 and B3 is turned on, and the port C4 of two-bit triplet solenoid valve 4 is turned on B4, and the A5 of two three-way electromagnetic valves 5 is turned on B5, one two energization The A7 of magnet valve 7 is turned on B7, and the port C8 of two-bit triplet solenoid valve 8 is turned on A8, opens cranking lever connecting rod piston air pump 1, Carry out pumping operation working status.
Referring to Fig. 7, the pressure value that controller 11 measures air accumulator 6 by differential pressure pickup transmitter 9 in real time (subtracts one A atmospheric pressure difference), when its value is 100KPa, under the control of differential pressure pickup transmitter 9, locking crank connecting rod piston One air pump 1, shut-off two three-way electromagnetic valve 7, also, the port C8 of two-bit triplet solenoid valve 8 is turned on port B8, differential pressure pickup Transmitter 10 proceeds by measurement.
Referring to Fig. 8, its average value P is taken according to its value change curve10, according to fluid mechanics principle, can calculate:
Wherein:γ is the density of GEOTHERMAL WATER;
P10To subtract the difference of atmospheric pressure;
L is air guide length of tube.
Above-mentioned formula is:The actual underwater penetration of air guide cable in underground heat well is probeed into by what pumping (pilot) mode measured Value H2, unit mH2O (meter water column).
Pressuring method and the result that measures of pumping pilot mode are calculated as follows and draws and probes into air guide electricity in underground heat well The average value H of the actual underwater penetration value of cable0, unit mH2O (meter water column).
Further, following formula is passed through:
Hshuiwei=L0-H0
Wherein:
L0Length for the cable transferred from underground heat well mouth;
HshuiweiFor from underground heat well mouth to the water level value of the underground heat water surface.
Draw the accurate water level value H of this measurementshuiwei.At the same time can be with by temperature sensor 13 and temperature transmitter 14 Measure the temperature value of GEOTHERMAL WATER well water.

Claims (5)

  1. A kind of 1. online wide range dynamic water table-temperature measurement system of underground heat well, it is characterised in that:Including crank connecting link piston Air pump (1), the 4th two-bit triplet solenoid valves of 1- (2,3,4,8), the 2nd one two three-way electromagnetic valve (5,7) of 1-, air accumulator (6), The 2nd pressure difference sensing transmitters of 1- (9,10), the controller (11) with display screen, high temperature resistant air guide signal control line cable (12), the 4th check valve (15a-15d) of temperature sensor (13), temperature transmitter (14) and 1-,
    The high temperature resistant air guide signal control line cable (12) and temperature sensor (13) are placed in the measurement pipe of underground heat well;
    The temperature sensor (13), the signal wire of high temperature resistant air guide signal control line cable (12), temperature transmitter (14) and control Device (11) processed is sequentially connected;
    The automatically controlled end of the 4th two-bit triplet solenoid valves of 1- (2,3,4,8) and the 2nd one two three-way electromagnetic valve (5,7) of 1- (W2, W3, W4, W8, W5, W7) and the signal end (X9, X10) and crank of the 2nd pressure difference sensing transmitters of 1- (9,10) Interface end of the startup control terminal (W1) of connecting rod piston air pump (1) respectively with the controller (11) is connected;Controller (11) is logical The the 1st, the 2nd one two-way valve (5,7) being connected with air accumulator (6) is crossed to be controlled;
    It is tightly connected below with gas-guide tube:The air outlet B1 of the crank connecting link piston air pump (1) and the 1st two-bit triplet electricity C2 ports in magnet valve (2) are connected, in the A2 ports in the 1st two-bit triplet solenoid valve (2) and the 2nd two-bit triplet solenoid valve (3) A3 ports be connected, the C4 ports in the air inlet port A1 of crank connecting link piston air pump (1) and the 3rd two-bit triplet solenoid valve (4) It is connected, the B4 ports of the 3rd two-bit triplet solenoid valve (4) are connected with the B3 ports of the 2nd two-bit triplet solenoid valve (3);Described 1st liang The B2 ports of position-3-way solenoid valve (2), the 3rd two-bit triplet solenoid valve (4) A4 ports respectively with the 1st, the 2nd check valve (15a, 15b) it is connected, its direction is reception air direction, the C3 ports of the 2nd two-bit triplet solenoid valve (3) and the 1st one two three-way electromagnetic valves (5) a port A5 is connected, another port B5 of the 1st one two three-way electromagnetic valve (5) and a port A6 of air accumulator (6) It is connected, another port B6 of air accumulator (6) is connected with a port A7 of the 2nd one two three-way electromagnetic valve (7), the 2nd one two Another port B7 of three-way electromagnetic valve (7) is connected with a port A8 of the 4th two-bit triplet solenoid valve (8), the 4th two-bit triplet electricity Another port C8 of magnet valve (8) and the middle gas-guide tube of high temperature resistant air guide signal control line cable (12) are connected;1st pressure difference The a port A9 of sensing transducer (9) is connected with another port C6 of air accumulator (6), the 1st pressure difference sensing transmitter (9) Another port B9 leads directly to airspace by the 3rd check valve (15c);One end of the 2nd pressure difference sensing transmitter (10) Mouth A10 is connected with another port B8 of the 4th two-bit triplet solenoid valve (8), another end of the 2nd pressure difference sensing transmitter (10) Mouth B10 passes through the 4th check valve (15d) and leads directly to airspace.
  2. 2. the online wide range dynamic water table-temperature measurement system of underground heat well according to claim 1, it is characterised in that: The range of the 1st pressure difference sensing transmitter (9) exports for 0-1.4MPa, 0-5V.
  3. 3. the online wide range dynamic water table-temperature measurement system of underground heat well according to claim 1, it is characterised in that: The range of the 2nd pressure difference sensing transmitter 10 exports for 0-500KPa, 0-5V.
  4. 4. the online wide range dynamic water table-temperature measurement system of underground heat well according to claim 1, it is characterised in that: The center of the high temperature resistant air guide signal control line cable (12) is gas-guide tube, and the periphery of gas-guide tube is equipped with four signal lines.
  5. 5. the online wide range dynamic water table-temperature measurement system of underground heat well according to claim 1, it is characterised in that: Underwater penetration of the high temperature resistant air guide signal control line cable (12) in underground heat well test tube is at least 80 meters.
CN201610487988.8A 2016-06-23 2016-06-23 A kind of online wide range dynamic water table-temperature measurement system of underground heat well Active CN105890673B (en)

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CN109035335B (en) * 2018-07-03 2021-11-19 厦门大学 Submarine tunnel water seepage level identification method based on monocular vision
CN114278280B (en) * 2022-03-08 2022-05-17 山东省鲁南地质工程勘察院(山东省地质矿产勘查开发局第二地质大队) Hydrogeology drilling water level automatic acquisition device and method

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CN102003990A (en) * 2010-12-01 2011-04-06 天津地热勘查开发设计院 Online deep dynamic level-temperature measuring system for geothermal well
CN202562529U (en) * 2012-05-24 2012-11-28 天津地热勘查开发设计院 Digital measuring system for water level and temperature of geothermal well
CN202969460U (en) * 2012-12-29 2013-06-05 重庆华捷地热能开发有限公司 Geothermal water semi-open type pipe net delivery system
CN204085623U (en) * 2014-07-29 2015-01-07 天津东丽湖能源科技有限公司 The groundwater level monitoring device of underground heat
CN205826019U (en) * 2016-06-23 2016-12-21 南开大学 A kind of underground heat well online wide range dynamic water table temperature measuring equipment

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JPS61261679A (en) * 1985-05-14 1986-11-19 Shimizu Constr Co Ltd Utilizing system of terrestrial heat

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Publication number Priority date Publication date Assignee Title
CN102003990A (en) * 2010-12-01 2011-04-06 天津地热勘查开发设计院 Online deep dynamic level-temperature measuring system for geothermal well
CN202562529U (en) * 2012-05-24 2012-11-28 天津地热勘查开发设计院 Digital measuring system for water level and temperature of geothermal well
CN202969460U (en) * 2012-12-29 2013-06-05 重庆华捷地热能开发有限公司 Geothermal water semi-open type pipe net delivery system
CN204085623U (en) * 2014-07-29 2015-01-07 天津东丽湖能源科技有限公司 The groundwater level monitoring device of underground heat
CN205826019U (en) * 2016-06-23 2016-12-21 南开大学 A kind of underground heat well online wide range dynamic water table temperature measuring equipment

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