CN101440706B - Terrestrial heat downhole water level measuring system - Google Patents
Terrestrial heat downhole water level measuring system Download PDFInfo
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- CN101440706B CN101440706B CN2008101518296A CN200810151829A CN101440706B CN 101440706 B CN101440706 B CN 101440706B CN 2008101518296 A CN2008101518296 A CN 2008101518296A CN 200810151829 A CN200810151829 A CN 200810151829A CN 101440706 B CN101440706 B CN 101440706B
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- pulley
- metal hammer
- water level
- distance measuring
- range finding
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Abstract
The invention discloses a geothermal underground water level measuring system. A metal hammer is fixed through molybdenum wire; after the molybdenum wire passes through a reversing pulley and is wound on a winding pulley for several circles, the end of the molybdenum wire is fixed with a distance measuring pulley. A distance measuring pulley shaft is connected with a speed reducer; and a step motor is connected with a shaft of the speed shaft. The startup, the stoppage and the rotating direction of the step motor are controlled through a control system. The speed reducer and the distance measuring pulley are connected in order that the distance measuring pulley produces moment; thus, when power is cut off, the position of the metal hammer is kept unchanged. The metal hammer and a well measuring tube form two electrodes; when the metal hammer is contacted with the water surface, a circuit is switched on, and the control system can calculate the length of the molybdenum wire wound on the distance measuring pulley according to a pulse signal emitted by a sensing switch of the distance measuring pulley, thereby determining the position of the water surface of the underground well. All the measuring and controlling devices are positioned on the ground; and the system does not need to mount any electronic testing probe underground and can effectively solve the problem that the testing probe is easy to damage caused by high temperature of geothermal water, strong corrosion and untight sealing of the probe.
Description
Technical field
The invention belongs to the electromechanical integration detection technique, be specifically related to the dynamic and static level measurement device in geothermal well down-hole.
Background technology
At present, the utilization of geothermal energy resources is important power-saving technologies.But in the geothermal energy resources development and utilization, the measuring method of geothermal well water level is comparatively backward.Manual testing's measuring method such as present employing: with about 8 millimeters iron Chui (probe); One side is connected by lead; Touch water level along well logging pipe or well-sinking; The other end and the ammeter of lead join, and ammeter is connected when metal probe touches the water level liquid level, then through measuring the degree of depth that conductor length draws the underground heat water level.Though this method operation is simple, need the labor intensive bad weather to measure, and measuring technology is comparatively backward.Other measuring methods commonly used have: the fixation pressure sensor in the down-hole, and pressure signal is delivered to ground through lead receives instrument, calculate the dynamic and static water level of geothermal well by pressure signal.Though this method has solved the problem of artificial in-site measurement; But because probe need place GEOTHERMAL WATER in for a long time; So the heatproof of probe, corrosion-resistant, sealing, diamagnetic disturbed etc. require very highly, therefore cost an arm and a leg, home products can't meet the demands at present.The employing inflation method of testing that also has promptly charges into nitrogen in geothermal well.Though this method need not placed probe in the down-hole, most well head sealings are undesirable, and gas leaks very fast, needs often to change gas cylinder, safeguards difficulty.And carry out need dismantling gas tube when wellhead equipment is safeguarded when needs, the working time of lifting, decline pump will be prolonged, the user is difficult to accept.
Summary of the invention
In order to address the above problem, the purpose of this invention is to provide a kind of terrestrial heat downhole water level measuring system that adopts the machine driving tracking mode, go for the geothermal well level measuring of different temperatures and water quality.
Below in conjunction with accompanying drawing know-why of the present invention is described.The missile silo level measurement device has: metal hammer, angle pulley, winding pulley, range finding pulley, reducer, stepper motor, well logging pipe and control corresponding system etc.Metal hammer is fixed with molybdenum filament, for making molybdenum filament change horizontal direction into by vertical direction angle pulley is housed, and molybdenum filament is wound in a few molybdenum filament terminations, back of winding pulley through angle pulley and fixes with the range finding pulley.Between range finding pulley and stepper motor, installed a reducer additional; Its objective is: when meeting the situation of outage; Metal hammer can rely on its deadweight and slippage is downwards immersed in the water; Reducer is connected with the range finding pulley will make the range finding pulley produce a moment, and the position of metal hammer will remain unchanged when cutting off the power supply like this.Reducer is connected with step motor shaft.The signal identifying is: metal hammer is an electrode, with the contacted well logging pipe of underground water be another electrode, guarantee that two electrodes insulate on mounting structure.Apply voltage and sampling resistor between two electrodes; Because molybdenum filament is connected with metal hammer; So circuit is connected when metal hammer contacts with the water surface, the control system can receive sampling resistor two end signals, with the startup of this control step motor, stop and rotation direction.On the range finding pulley inductive switch is housed; The number of pulses of inductive switch output is directly proportional with the rotating cycle of range finding pulley; The relative displacement of molybdenum filament can be calculated by the diameter of range finding pulley and the number of pulses of inductive switch output, water level elevation can be accurately measured thus.Also can detect the step number of stepper motor rotation and come accurately to measure water level elevation.Measure and control instrument is installed in ground and controls automatically, to equipment heatproof, corrosion-resistant and seal request is lower.
Description of drawings
Shown in accompanying drawing be structure principle chart of the present invention.
The specific embodiment
Below through specific embodiment the present invention is done further explanation.The missile silo level measurement device has metal hammer 1, angle pulley 2, winding pulley 3, range finding pulley 4, reducer 5, stepper motor 6, well logging pipe 7 and control corresponding system 8 etc.Metal hammer 1 usefulness molybdenum filament is fixed.Molybdenum filament is wound in winding pulley 3 a few molybdenum filament terminations, back through angle pulley 2 and fixes with range finding pulley 4.Range finding pulley 4 wheel shafts are connected with reducer 5, and stepper motor 6 is connected with 5 of reducers.Metal hammer 1 is as an electrode, with the contacted well logging pipe 7 of underground water as another electrode, apply voltage and sampling resistor between two electrodes, by the startup of control system 8 control step motors 6, stop and rotation direction.When certain reason causes system cut-off, if there is not safeguard measure, because stepper motor does not have lock function, the torque meeting that the metal hammer deadweight produces drives the stepper motor rotation, and then metal hammer can move downward.Can't confirm the position of metal hammer after causing system to restore electricity, test function that like this can't recovery system.So between range finding pulley 4 and stepper motor 6, insert the reducer 5 of a big retarding ratio.Even certain reason causes system cut-off, the torque that the metal hammer deadweight produces can not drive the stepper motor rotation, can guarantee the settling position of metal hammer.
The fixed sliding opinion 2 of switching-over is vertically mounted on the top of well logging pipe 7.The well logging pipe is to be specifically designed to the test water level, and independently is installed to the metal tube of an about 20-25mm of diameter of down-hole.The mechanical driving device that metal hammer 1 is moved up and down is fixed on the insulation flat board and also is installed on the underground heat well head.To accurately measure the initial range of metal hammer 1 and GEOTHERMAL WATER well water position during installation, and deposit these data in control system 8.Apply 5V dc source and 500 ohm of left and right sides sampling resistors formation current loops between metal hammer and well logging pipe two electrodes, the magnitude of voltage at sampling resistor two ends will as judging whether metal hammer contacts the signal of the water surface, and this signal is received by control system 8.The control system regularly detects the current loop signal, is judged as like detection signal and opens circuit, and the expression metal hammer does not contact with the water surface, and control system 8 is rotated in the forward starter motor and puts down metal hammer 1, and until current loop conducting just, the expression metal hammer contacts with the water surface.The diameter of range finding pulley is known; Metal hammer 1 is known with the initial range of geothermal well water level; As long as measure the length that molybdenum filament is wound into the range finding pulley; Promptly multiply by the diameter of range finding pulley, can calculate the relative shift of molybdenum filament (metal hammer) from the initial point position to the water surface, accurately measure water level elevation thus by the number of pulses of inductive switch output.Subject to the foregoing; Also can be when current loop conducting just, measure the step number of stepper motor 6 rotations and come accurately to measure water level elevation: promptly the stepper motor step-by-step impulse quantity diameter that multiply by the range finding pulley equals the relative shift of molybdenum filament from the initial point position to the water surface.Because the geothermal well SEA LEVEL VARIATION receives multiple factor affecting; When the timing detection signal is judged current loop for connection; In order accurately to locate metal hammer and liquid level position contacting, stepper motor repeats to transfer the metal hammer step with carrying metal hammer in the reverse rotation; Repeatedly during the measurement result basically identical, confirm the absolute altitude of well location liquid level.
Characteristics of the present invention are: because the present invention adopts the machine driving following principle, under the prerequisite that low cost drops into, solved variety of issue artificial and that other measuring method is brought.Any Electronic Testing probe at first need be installed in the down-hole, can solve effectively because the GEOTHERMAL WATER temperature is high, corrosivity is strong, the flimsy problem of the probe poorly sealed institute test probe that causes.Secondly, test process need not consume any material, like special gas etc., reduces maintenance cost.This test macro can reach automatic control, and all are measured and control device all is positioned on the ground, have reduced requirements such as each parts heatproofs, and are easy to maintenance, low-cost, easy installation requirement, accurately water level under the measuring well.Adopt the method can not have any impact, in the geothermal utilization management, have very big application and popularization value environment.
Claims (3)
1. terrestrial heat downhole water level measuring system; Have metal hammer, angle pulley, winding pulley, range finding pulley, stepper motor and control corresponding system, it is characterized in that metal hammer (1) fixes with molybdenum filament, it is fixing with range finding pulley (4) that molybdenum filament is wound in a few molybdenum filament terminations, back of winding pulley (3) through angle pulley (2); Range finding pulley (4) wheel shaft is connected with reducer (5); Stepper motor (6) and reducer (5) axle is connected, and metal hammer (1) is an electrode, with the contacted well logging pipe of underground water (7) be another electrode; Apply voltage and sampling resistor between two electrodes, by the startup of control system (8) control step motor (6), stop and rotation direction.
2. according to the described terrestrial heat downhole water level measuring system of claim 1, it is characterized in that on the said range finding pulley (4) inductive switch being housed, the number of pulses of inductive switch output is directly proportional with the rotating cycle of said range finding pulley (4).
3. according to claim 1 or 2 described terrestrial heat downhole water level measuring systems, it is characterized in that the step number of measuring said stepper motor (5) rotation measures water level elevation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101518296A CN101440706B (en) | 2008-09-26 | 2008-09-26 | Terrestrial heat downhole water level measuring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101518296A CN101440706B (en) | 2008-09-26 | 2008-09-26 | Terrestrial heat downhole water level measuring system |
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| Publication Number | Publication Date |
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| CN101440706A CN101440706A (en) | 2009-05-27 |
| CN101440706B true CN101440706B (en) | 2012-07-04 |
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| CN2008101518296A Expired - Fee Related CN101440706B (en) | 2008-09-26 | 2008-09-26 | Terrestrial heat downhole water level measuring system |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634222B (en) * | 2009-08-31 | 2012-11-21 | 湖南省水利水电勘测设计研究总院 | Device for measuring drilling water level |
| CN101929326B (en) * | 2010-08-16 | 2011-08-10 | 邯郸市伟业地热开发有限公司 | Geothermal well layer-by-layer filter material feeding process |
| CN101929328B (en) * | 2010-08-16 | 2011-08-10 | 邯郸市伟业地热开发有限公司 | Dynamic water filter material throwing technological method of geothermal well |
| CN102608750B (en) * | 2011-01-25 | 2016-01-06 | 全崴科技有限公司 | Retractable cable length introscope can be calculated |
| CN102661915A (en) * | 2012-04-28 | 2012-09-12 | 同济大学 | Impact rolling model tester and application thereof |
| CN104329077A (en) * | 2014-11-12 | 2015-02-04 | 中国石油天然气股份有限公司 | Anti-disturbance liquid level monitor for water source well |
| CN107990941A (en) * | 2017-12-26 | 2018-05-04 | 山东科技大学 | A kind of multifunctional water well measurements device |
| CN108222821B (en) * | 2018-01-04 | 2019-06-28 | 河北绿源地热能开发有限公司 | A kind of well drilling technology suitable for middle low temperature geothermal well |
| CN114115368A (en) * | 2021-11-12 | 2022-03-01 | 中铁建工集团有限公司 | Intelligent drainage system for building construction and water level monitoring method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4142411A (en) * | 1977-07-19 | 1979-03-06 | Electromeasures, Inc. | Water well draw down monitoring system |
| SU1460219A1 (en) * | 1986-03-06 | 1989-02-23 | Специализированное производственное геологическое объединение по тампонажным и геологоразведочным работам | Method and apparatus for determining water inflow in supporting mine workings |
| CN2856414Y (en) * | 2005-09-09 | 2007-01-10 | 天津大学 | Downhole level measurer for dynamic monitoring geothermal well |
| CN200964845Y (en) * | 2006-10-11 | 2007-10-24 | 李炜 | Dynamic water level measuring device for water well |
-
2008
- 2008-09-26 CN CN2008101518296A patent/CN101440706B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4142411A (en) * | 1977-07-19 | 1979-03-06 | Electromeasures, Inc. | Water well draw down monitoring system |
| SU1460219A1 (en) * | 1986-03-06 | 1989-02-23 | Специализированное производственное геологическое объединение по тампонажным и геологоразведочным работам | Method and apparatus for determining water inflow in supporting mine workings |
| CN2856414Y (en) * | 2005-09-09 | 2007-01-10 | 天津大学 | Downhole level measurer for dynamic monitoring geothermal well |
| CN200964845Y (en) * | 2006-10-11 | 2007-10-24 | 李炜 | Dynamic water level measuring device for water well |
Non-Patent Citations (1)
| Title |
|---|
| 李新建，高晓红.浮筒式水位连续测量器在连铸旋流井中的应用.《连铸》.2004,(第5期),39-40. * |
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| CN101440706A (en) | 2009-05-27 |
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